EP0236557A2 - Ventilation device - Google Patents

Abstract

A ventilation device 1 for rooms has an elongate, parallelepipedal housing 2 with external air penetration openings 8 and inner air penetration openings 9, the inner air penetration openings 9 being situated in an inner extruded profile 4 and being capable of being opened or closed by a flap 14 which is removably suspended by a hook profile 14a and a hook profile 4h of the inner extruded profile 4 and is fixed against unintentional unhanging by a leg 5c of another housing profile 5, which serves as a securing web. <IMAGE>

Description

The invention relates to a ventilation device for rooms, with an elongated, rectangular housing, which is composed of several longitudinal extrusion profiles and two end plates and in which each extrusion profile can optionally consist of light metal or plastic, with an outer, essentially upright, extruded profile optionally has a ventilation passage opening at one or more points distributed over its length, while an opposite, likewise essentially upright, inner extrusion profile contains air passage openings arranged evenly distributed over its entire length, which either have an adjustable extrusion profile assigned to it within the housing are closable or releasable, and wherein the outer and inner extruded profiles are each held in a holding connection by upper and lower, essentially horizontally arranged, extruded profiles en.

Such ventilation devices are widely known from DE-OS 28 02 696. They can either be installed directly in wall openings in the area of windows, doors or the like, or else can be placed on the inside of a wall in the area of a channel-like wall opening.

It is possible to design these known ventilation devices as sound insulation ventilation devices, with which on the one hand a good air exchange between the interior of the room and the outside air can be achieved, but which at the same time can largely prevent the undesired penetration of outside noise into the interior of the room.

To achieve this goal, linings made of sound-absorbing material are inserted into the housing of the ventilation devices and enclose the air duct between the outer and the inner air passage openings. In addition, with such ventilation devices there is also the possibility of accommodating a blower within the elongated, cuboid-shaped housing, with the aid of which the air throughput can be supported by the air duct and sound insulation ducts. In this case, it is advisable to use an air guide chamber for receiving the fan in the cuboid housing of the ventilation device, as is provided for example by DE-PS 28 42 161.

The inner extruded profile of the cuboid housing is preferably designed as an air passage closure, as z. B. has become known from DE-PS 27 03 207. As a shut-off device, an end plate that can be moved parallel to its plane can be used. However, an end plate which can be pivoted about an edge-side joint profile can also be used.

In the case of the air passage closures which can be moved as a cross slide, the inner extruded profile of the housing and the shut-off plate must each be removed and installed in different, successive operations if, for example, the interior of the cuboid housing is to be exposed for repair and cleaning purposes. In the case of the air passage closures equipped with pivotable shut-off plates, on the other hand, the assembly and disassembly of the inner extruded profile and the shut-off plate is complex and complex, because namely the joint bead of the shut-off plate can be pushed out and pushed in along its entire length relative to the joint groove of the inner extruded profile. If the ventilation device is longer, a relatively long working area is necessary for this work.

The invention aims to create a ventilation device of the type mentioned at the outset, which, with any possible interior design, enables both the assembly and the disassembly of all functional parts interacting in practical use.

The invention also aims at a structurally particularly simple design of this ventilation device.

On the one hand, a ventilation device of the type mentioned should be able to be adapted in a simple manner to a wide variety of installation requirements, in particular installation lengths. In addition, however, it is also sought that the air duct - possibly also subsequently - can be designed with the simplest means as a sound insulation duct, the parts of which can be easily replaced and cleaned if necessary.

It is also an object of the invention to provide a rotary drive and locking gear for the closure flap which, in the closed position of the same, can also be made locking at both ends thereof, thereby optimizing the tight closure of the ventilation device in the area of the air passage openings on the room side.

Finally, there is also the task of creating a ventilation device of the type specified, which can be equipped with a blower and in which undesirable signs of wear on the switching and / or regulating element of the speed controller for the electric motor of the blower are then avoided.

Basically, this goal is achieved according to the invention by
that the adjustable extruded profile within the housing is designed as a flap suspended on the inner extruded profile so as to be pivotable about its upper longitudinal edge,
that the suspension of the flap consists of a hook profile formed along this longitudinal edge,
and that the hook profile of the flap engages over a hook profile on the inner extruded profile, which is directed opposite to it, and in turn is overlapped by a web profile on which the upper extruded profile carrying or holding the inner extruded profile is supported and fixed.

The particular advantage of this embodiment is that, on the one hand, the inner extruded profile, which is provided with air passage openings arranged in the manner of a lattice hole along its entire length, can be manually coupled and uncoupled with the extruded profile forming the flap by means of a simple hook-in connection and that this hook-in connection with the inner extruded profile attached to the housing automatically and inevitably secured.

The light but reliable holding connection of the inner extruded profile at its two longitudinal edges can be brought about in an advantageous manner by means of C- or U-shaped locking claws, which can also be releasably locked and / or closed in C- or U-shaped locking claws of the two extruded profiles carrying it jammed.
There is another development feature of the invention is that the extruded profile forming the flap is a hollow profile which has at least on its inner longitudinal side retaining webs for a strip or block made of sound-absorbing material. In this way, the sound absorbing material is kept detachably connected to the flap for cleaning purposes.

For an optimal effect of the air passage closure, it proves to be particularly important according to the invention that the extruded profile forming the flap on its longitudinal edge facing away from the hook profile contains a dovetail or C-shaped undercut guide profile into which a locking rail or the like can be inserted longitudinally, which are assigned abutments at both ends in the end plates of the housing, which form locking elements or interventions. In this way, the flap is pressed evenly over its entire length against the inside of the inner extruded profile in the closed position.

A design of the ventilation device which favors the air flow through the housing results according to the invention in that the outer extruded profile has a longitudinally extending, outwardly projecting and approximately trapezoidal profiled hollow rib, in the downward-pointing profile wall of which the air passage openings are incorporated, preferably this profile wall downwards is dominated by the drip nose.

With a favorable ventilation effect, it proves to be important for achieving a good sound insulation effect according to the invention that a C-shaped or G-shaped profile made of sound-absorbing material is used in the housing, which on the one hand has at least one in its wall adjacent to the hollow rib of the outer extruded profile the hollow rib has an opening, while its slot-like longitudinal opening on the opposite wall is at least approximately at the level of the suspension of the rattles on the inner extruded profile. When the air passage closure is open, the interaction of the flap with the profile made of sound-absorbing material forces the air flow to be deflected several times, thereby producing a high sound-insulating effect.

If, according to the invention, the outer extruded profile is positively connected at its longitudinal edges with the interposition of coupling profile bars with the upper and the lower, horizontally arranged extruded profile, then all the extruded profile can consist of a thin-walled light metal, while the coupling profile bars are made of heat-insulating plastic. These measures create a lightweight but stable and yet heat-insulating housing for a ventilation device.

A good cohesion of the housing is also ensured by the fact that the coupling members on the coupling profile bars and the extruded profiles assigned to them consist of mutually complementary, undercut profiled webs and grooves, for example those with an arcuate cross section.

Another further development of the invention consists in the fact that the upper and the lower extruded profile each have two longitudinal webs or ribs projecting towards their inner side, each spaced from the main plane of the outer and inner extruded profile, and between them in the housing an air guide chamber formed from two molded parts symmetrical to a horizontal longitudinal center plane can be used, which delimits a tubular air passage towards the outer extruded profile, while still containing air passage openings directed therefrom on opposite sides.

This configuration makes it possible to first insert the two molded parts for the air guide chamber into the housing independently of one another from the longitudinal side open when the internal extruded profile has been removed, and then to bring them in a mirror image position by longitudinal displacement within the housing into alignment or axial alignment . The air guiding chamber can also be displaced in the longitudinal direction as a whole within the housing and can be fixed in any desired relative position, for example simply by laterally inserting the sound-absorbing material profiles. Finally, it is also advantageous if the longitudinal wall of the air guide chamber opposite the air passage forms a releasable connecting part for the two molded parts and the support for a blower, in particular an axial fan, which can be inserted into the air guide chamber.

A particularly simple embodiment is also achieved in that the cross-sectionally C-shaped profile made of sound-absorbing material is formed by a flat strip of material which is inserted transversely into the housing with a double kink in the longitudinal direction and is held therein under internal stress, and in that case only that the air guide chamber adjoining ends of the C-profiles are covered on their opening side by relatively short laminated tongues.

Practical tests have shown that in such a structurally simple ventilation device, the desired high sound absorption effect can be achieved if the length of the laminate tongues corresponds approximately to the clear cross-sectional height of the C-profile, i.e. over most of its length towards the room side optional closing or opening of the air passage serving extrusion profile is provided completely open.

The removal and installation of the material strip forming the C-shaped profile made of sound-absorbing material, which is necessary for cleaning and / or maintenance work, is made particularly simple in this way and is not hindered by the laminate tongues.
In a further embodiment of the ventilation device, the invention proposes that a multilayer wall is provided in front of the cross-sectionally C-shaped profile made of sound-absorbing material, the cover layers of which consist of relatively thin, sound-hard material, e.g. hard plastic or sheet metal, while the intermediate layer consists of relatively thick sound-absorbing material is formed. This multi-layer wall can also be easily removed into the cuboid Install shaped housing, such that it is effective as a support system for the web of the cross-sectionally C-shaped profile made of sound-absorbing material. The sound insulation effect of the ventilation device is improved in a special way by this measure.

An essential feature of the invention is further seen in the fact that the outer wall of the housing consists of three extruded profiles which can be connected or connected to one another by latching and / or clamping couplings, the middle one of which is blocked one or more times to form the air passage openings.

When assembling the housing, simply by correspondingly different length dimensioning of the sections of the central extruded profile, the number and length of the air passage openings can be determined without problems. The length adjustment only requires simple separating cuts on the individual extruded profiles when building the housing.

According to the invention, it has proven to be advantageous if the upper and lower extruded profiles of the outer wall each consist of light metal, while the central extruded profile is made of plastic.

Another design feature essential to the invention also consists in the fact that a sound-absorbing duct which is trapezoidal in cross-section is formed in the housing, on the one hand by the central extruded profile and on the other hand by three mutually inclined insulation strips, e.g. is made of foam plastic or foam rubber.

The insulation strip of the sound insulation duct, which is aligned parallel to the central extruded profile, can be covered on the outside with a plate made of weight material, for example sheet metal. The is parallel Insulation strips aligned with the central extruded profile of the outer wall are preferably inserted into the housing in such a way that their plate made of weight material is still at a relatively large distance from the inner wall of the housing and the closing plate serving as a shut-off device can be arranged between its closed position and its release position in the space available here .

There is a further design feature of the invention in that the insulating material strip aligned parallel to the central extrusion profile is perforated or divided in the longitudinal direction, the opening or interruption areas being offset laterally - with a gap - with respect to the air passage openings kept free from the central extrusion profile of the outer wall.

Finally, according to the invention, the insulation strips of the sound insulation duct between the longitudinal webs and / or strips on the inside of the housing can be held releasably with clamping tension, the insulation strips covered with weight material preferably being additionally secured in position by sprung-in spring clips.

It is also advantageous to use a rotary drive and locking mechanism for the closure flap behind the end plate, which is arranged on the room side and is provided with air passage openings, in particular with grille perforations, of the cuboid housing, for example. The locking flap, which is pivotably mounted about one of its longitudinal edges, is in actuating engagement with an actuating lever which is pivotably mounted parallel to it, the adjusting lever being pivotably mounted about an axis which is offset relative to the pivoting bearing of the locking flap, both vertically and vertically, and one in the pivoting plane has curved curved stroke curve, which has a varying distance relative to the bearing axis over at least part of its length and engages a projection at the end of the closure flap. Such a rotary drive and locking gear is normally structurally designed so that it is supported at one end of the cuboid housing and only there between this housing and the closure flap for both opening and closing and locking the same.

So that a swivel drive and locking gear of this type has a locking effect at least at both ends of the flap in the closed position of the closure flap and thereby optimizes the tight closure of the ventilation device in the area of the air passage openings on the room side, it is therefore of particular advantage that the actuating lever has another, transverse to it Swing plane directed stroke curve with which a push rod is in engagement, which is displaceably guided on the closure flap at a distance parallel to its pivot bearing and has at least one locking piece that can be brought into and out of a holding connection with a locking engagement on the housing side.

The swivel drive and locking gear according to the invention is particularly advantageous in so far as it can be easily adapted to any possible length of the ventilation devices, simply by cutting the push rod to a length that corresponds to the distance between the adjusting lever and one end of the housing the latch engagement provided at the other end of the housing is adapted. At one end of the ventilation device, the locking of the closure flap in the closed position is effected via the projection thereof which is in engagement with the first lifting curve, while at the opposite end of the ventilation device the push rod end immediately comes into holding connection with the latch engagement on the housing side.

In a further embodiment of the swivel drive and locking gear according to the invention it is proposed that the one lifting curve a curved slot or a curved groove in the side surface of the actuator is lever, into which the projection of the closure flap protrudes sideways, while the second stroke curve is located in a recess formed in the same side surface. An inevitable pivoting movement of the closure flap between its closed position and the open position is brought about via the first stroke curve of the actuating lever, while the second stroke curve can move the push rod at least in a force-fitting manner.

It is also proposed according to the invention that the trough or the second stroke curve is offset in the radial and circumferential directions from the first stroke curve in the side surface of the actuating lever, so that the projection of the locking valve which interacts with the first stroke curve and the push rod which can be advanced thereon can have a different radial distance from the pivot bearing of the closure flap.

So that a swivel drive and locking gear according to the invention in one and the same version is suitable for optional installation on the right or left end of the ventilation device, the actuating lever is designed symmetrically to a plane intersecting its swivel axis at right angles, that is to say provided on both side surfaces with two lifting curves . If the actuating lever is mounted on the inside of an end plate of a housing, it can be in contact with one end of the push rod guided in the closure flap via the second lifting curve located in its side surface facing away from the end plate, while at least the other end of this push rod on the opposite end plate of the housing is assigned a bevel as bolt engagement and abutment. Between the second stroke curve of the actuating lever and the bevel of the locking engagement or abutment, the push rod is only moved in a movement-locking manner between its locking position and its locking position in this embodiment, whereby it reaches the unlocking position depending on the opening-pivoting movement of the closure flap by the locking engagement or abutment associated end slides on the tightening slope.

Furthermore, it has proven to be advantageous according to the invention if the tightening bevel with the bolt engagement or abutment is provided parallel to the plane of the end plate, preferably continuously, in an adjustable or adjustable manner, because in this way the closing pressure for the closure flap can be matched to the existing requirements at any time. For this purpose, the actuator for the bolt engagement or the abutment is formed by a screw spindle, which rotatably but axially immovably in the end plate, and is provided with a tool engagement at its exposed end. The screw spindle can be actuated, for example, by a screwdriver.

It has also proven to be expedient according to the invention if the push rod consists of a wear-resistant plastic profile which is received in an undercut longitudinal groove on the closure flap. In the simplest case, the plastic profile can have a flat, rectangular cross section and only act directly as a locking piece with its end facing away from the adjusting lever. However, it could also have an approximately T-shaped cross-section, the T-web protruding from the longitudinal groove and having toothing which is uniformly distributed over its entire length and which can come into and out of operative connection with associated counter-toothing within the housing.

The locking engagement or the abutment, which interacts with the free end of the push rod, can be located in an insert which is held in a cutout of the end plate, but is fixed in a form-fitting manner.

If the insert is then formed essentially symmetrically to a central plane parallel to the end plate and the cutout for receiving the actuating lever corresponds structurally to the cutout for receiving the insert in the end plates, the insert can also be used for optional right and left installation will. Finally, the invention is also characterized in that the actuating lever carries a toothed segment at a point diametrically opposite the actuating cam protruding from the end plate, with which a drive pinion of an actuating motor can be brought into engagement, while in the area between the toothed segment and the actuating cam on the actuating lever can still sit a driver with which an electrical switching and / or regulating element for the shift motor of a blower can be brought into engagement.

In this way, a swivel drive and locking gear according to the invention can be used in many ways, i.e. it can be used practically in one and the same version for ventilation devices which have a wide variety of equipment. The actuating lever can not only be operated directly via its actuating cam or manually by interposing a linkage, but it can also be moved by an electric actuator. The control lever itself can also be used to switch an electrical blower installed in the ventilation device on and off or to regulate its working speed.

According to the invention, a ventilation device can also be equipped with a fan that can be influenced by a speed controller and operated by an electric motor.

So that there is no need to use rotary or slide potentiometers with sliding contact to regulate the speed of the electric motor, which are naturally subject to considerable wear and tear and therefore impair their effectiveness after a relatively short period of use if the locking devices of the ventilation device are subject to a relatively high operating frequency, i.e. very much Often have to be opened and closed, the invention provides that the speed controller two inductively with each other exclusively by a common, axially displaceable core has coupled coils, of which the primary coil can be connected to the mains via a capacitor and, if appropriate, a resistor connected in parallel as a spark extinguisher by means of a switch contact, while the secondary coil with a diode, a capacitor, at least one resistor and a transistor and one Bridge rectifier forms the speed control circuit for the electric motor of the blower.

The invention provides that the axially displaceable core continuously penetrates the entire length of the secondary coil, while it can be shifted relative to the primary coil in its operative position between a maximum dimension and a minimum dimension.

Functionally, it has also proven to be useful if the diameter of the core is approximately 15% smaller than the inside diameter of the coils, which e.g. at a length of 18 mm, have a resistance of 1200 ohms.

It is also considered particularly expedient if the core of the two coils consists of a welding wire alloy, while a MOS-FET transistor is proposed for use as a transistor.

• Fig. 1 in räumlicher Ansichtsdarstellung von vorne den Ge­samtaufbau einer Lüftungsvorrichtung für Räume,
• Fig. 2 in größerem Maßstab einen Querschnitt entlang der Linie II - II durch die Lüftungsvorrichtung nach Fig. 1,
• Fig. 3 in größerem Maßstab einen Schnitt entlang der Linie III - III durch die Lüftungsvorrichtung nach Fig. 1, sowie die
• Fig. 4 und 4ʹ einen Horizontalschnitt entlang der Linie IV - IVʹdurch die Lüftungsvorrichtung nach Fig. 1,
• Fig. 5 eine Ausschnittvergrößerung des inneren Teilbereichs der Lüftungsvorrichtung nach den Fig. 2 und 3 bei in Schließlage befindlicher Abschlußklappe,
• Fig. 6 in räumlicher Ansichtsdarstellung von vorne den Ge­samtaufbau einer weiteren Lüftungsvorrichtung für Räume,
• Fig. 7 in größerem Maßstab einen Querschnitt entlang der Linie VII - VII in Fig. 6,
• Fig. 8 ebenfalls in größerem Maßstab einen teilweisen Längs­schnitt entlang der Linie VIII - VIII durch die Lüftungs­vorrichtung nach Fig. 6,
• Fig. 9 in räumlicher Ansichtsdarstellung von vorne den Ge­samtaufbau einer wieder anderen Lüftungsvorrichtung für Räume,
• Fig. 10 in größerem Maßstab einen Querschnitt entlang der Linie X - X durch die Lüftungsvorrichtung nach Fig. 9,
• Fig. 11 in schematisch vereinfachter Darstellung die Lüftungs­vorrichtung in Pfeilrichtung XI der Fig. 9 gesehen,
• Fig. 12 in räumlicher Ansichtsdarstellung von vorne den Ge­samtaufbau einer noch anderen Lüftungsvorrichtung für Räume,
• Fig. 13 in größerem Maßstab einen Querschnitt entlang der Linie XIII - XIII durch die Lüftungsvorrichtung nach Fig. 12,
• Fig. 14 enbenfalls in größerem Maßstab einen Schnitt entlang der Linie XIV - XIV durch die Lüftungsvorrichtung nach Fig. 12 bei in Öffnungsstellung befindlicher Ver­schlußklappe der Lüftungsvorrichtung,
• Fig. 15 einen der Fig. 14 entsprechenden Schnitt, jedoch bei Schließlage der Verschlußklappe,
• Fig. 16 einen Schnitt entlang der Linie XVI - XVI in Fig. 15,
• Fig. 17 einen Schnitt entlang der Linie XVII - XVII in Fig. 12,
• Fig. 18 einen Schnitt entlang der Linie XVIII - XVIII in den Fig. 12 und 13, und zwar jeweils nur im Bereich der beiden Endplatten des Gehäuses der Lüftungsvorrichtung bei Schließlage der Verschlußklappe,
• Fig. 19 in räumlicher Ansichtsdarstellung von vorne den Gesamt­aufbau einer letzten Ausführungsform der Lüftungs­vorrichtung für Räume,
• Fig. 20 in größerem Maßstab einen Querschnitt entlang der Linie XX - XX durch die Lüftungsvorrichtung nach Fig. 19,
• Fig. 21 ebenfalls in größerem Maßstab einen Schnitt entlang der Linie XXI - XXI durch die Lüftungsvorrichtung nach Fig. 19 bei in Öffnungsstellung befindlicher Ver­schlußklappe der Lüftungsvorrichtung,
• Fig. 22 einen der Fig. 21 entsprechenden Schnitt, jedoch bei Schließlage der Verschlußklappe,
• Fig. 23 einen Schnitt entlang der Linie XXII - XXII in Fig. 22,
• Fig. 24 einen Schnitt entlang der Linie XXIV - XXIV in Fig. 19,
• Fig. 25 einen Schnitt entlang der Linie XXV - XXV in den Fig. 19 und 20, und zwar jeweils nur im Bereich der beiden Endplatten des Gehäuses der Lüftungsvorrichtung bei Schließlage der Verschlußklappe und
• Fig. 26 einen Drehzahlregler für ein in das Gehäuse der Lüf­tungsvorrichtung eingebautes Gebläse.

Further features and advantages of the subject matter of the invention are explained below with reference to drawings. It shows

• 1 is a spatial front view of the overall structure of a ventilation device for rooms,
• 2 on a larger scale a cross section along the line II - II through the ventilation device according to FIG. 1,
• Fig. 3 in a larger scale a section along the line III - III through the ventilation device according to Fig. 1, and the
• 4 and 4ʹ a horizontal section along the line IV - IVʹ through the ventilation device according to FIG. 1,
• 5 is an enlarged detail of the inner portion of the ventilation device according to FIGS. 2 and 3 with the closure flap in the closed position,
• 6 is a spatial view from the front of the overall structure of another ventilation device for rooms,
• 7 on a larger scale a cross section along the line VII - VII in FIG. 6,
• 8 also on a larger scale, a partial longitudinal section along the line VIII - VIII through the ventilation device according to FIG. 6,
• 9 is a spatial front view of the overall structure of yet another ventilation device for rooms,
• 10 on a larger scale a cross section along the line X - X through the ventilation device according to FIG. 9,
• 11 seen in a schematically simplified representation the ventilation device in the direction of arrow XI of FIG. 9,
• 12 is a spatial view from the front of the overall structure of yet another ventilation device for rooms,
• 13 is a cross-section on a larger scale along the line XIII - XIII through the ventilation device according to FIG. 12,
• 14 also shows, on a larger scale, a section along the line XIV-XIV through the ventilation device according to FIG. 12 with the closure flap of the ventilation device in the open position,
• 15 shows a section corresponding to FIG. 14, but with the closure flap in the closed position,
• 16 shows a section along the line XVI - XVI in FIG. 15,
• 17 shows a section along the line XVII - XVII in FIG. 12,
• 18 shows a section along the line XVIII - XVIII in FIGS. 12 and 13, in each case only in the region of the two end plates of the housing of the ventilation device when the closure flap is in the closed position,
• 19 in a spatial view from the front, the overall structure of a last embodiment of the ventilation device for rooms,
• 20 on a larger scale a cross section along the line XX - XX through the ventilation device according to FIG. 19,
• 21 also shows a section on a larger scale along the line XXI - XXI through the ventilation device according to FIG. 19 with the closure flap of the ventilation device in the open position,
• 22 shows a section corresponding to FIG. 21, but with the closure flap in the closed position,
• 23 shows a section along the line XXII - XXII in FIG. 22,
• 24 shows a section along the line XXIV-XXIV in FIG. 19,
• 25 shows a section along the line XXV - XXV in FIGS. 19 and 20, in each case only in the region of the two end plates of the housing of the ventilation device when the closure flap and
• Fig. 26 shows a speed controller for a fan built into the housing of the ventilation device.

In Fig. 1 of the drawing, the overall view of a ventilation device 1 for rooms is shown, which is preferably suitable for installation in fixed frames or sashes of windows and doors, but which can also be used in slot-like wall openings if necessary.

This ventilation device 1 has an elongated, rectangular housing 2, which is composed of a plurality of longitudinally extruded profiles 3, 4, 5 and 6 and two end plates 7a and 7b.

The extruded profiles 3, 4, 5 and 6 are preferably made of thin-walled light metal, while the two end plates 7a and 7b are made as injection molded parts made of plastic.

The shape of the extruded profiles 3, 4, 5 and 6 can be seen in detail from FIGS. 2 and 3. The result is that the outer extruded profile 3 of the housing 2 is arranged essentially upright and has a longitudinally extending, outwardly projecting and approximately trapezoidal profiled hollow rib 3a, which has an upper, inclined profile wall 3b, a vertical profile wall 3c and a lower, inclined one Profile wall 3b, which is in the same plane with the profile wall 3c by a drip nose 3e below.

Air passage openings 8, which preferably have an elongated slot shape, can be punched out of the lower, inclined profile wall 3d distributed over the length of the hollow rib 3a, as can be clearly seen in FIGS. 4 and 4ʹ.

the inner extruded profile 4 of the housing 3, which is opposite the outer extruded profile 3, is also arranged essentially upright and has air passage openings 9 which are arranged uniformly distributed over its entire length and which are arranged, for example, in three rows one above the other and form a grille perforation, as clearly shown in FIG 1 can be seen. The connection between the outer extruded profile 3 and the inner extruded profile 4 is formed by the essentially horizontally arranged, two extruded profiles 5 and 6, which have the same profile cross section, but are arranged symmetrically to each other to a horizontal plane. On the outwardly directed longitudinal edge, the two extruded profiles 5 and 6 each have a longitudinal, bead-shaped thickening 5a or 6a, with which a plastic profile rod 10 or 11 manufactured by extrusion can be brought into a form-fitting holding engagement via a complementary longitudinal groove 10a or 11a. Each of the plastic profile bars 10 and 11 has on its longitudinal side opposite the undercut profile groove 10a or 11a an undercut profile bead 10b or 11b, which in turn can be brought into a positive locking connection with a complementary longitudinal groove 3f and 3g on both longitudinal edges of the outer extruded profile 3 . The plastic profile bars 10 and 11 produce a heat-insulating holding connection between the outer extruded profile 3 and the upper extruded profile 5 and the lower extruded profile 6 of the housing 2 in this way. The inner longitudinal edge of the extruded profiles 5 and 6 is provided with an approximately Z-shaped bend 5b or 6b, the free leg 5c or 6c of which cooperates with the inner extruded profile 4 as an alignment and holding element. The inner extruded profile 4 has for this purpose on its two longitudinal each edge a development 4a and 4b, which surrounds the free leg 5c and 6c on the outside.

The formation of the free legs 5c and 6c of the two extruded profiles 5 and 6 and the bends 4a and 4b of the inner extruded profile 5 can be seen particularly clearly from FIG. 5 of the drawing. It can be seen here that the bends 4a and 4b in cross section form approximately C- or U-shaped locking claws 4c, each having an outer leg 4d and an inner leg 4e. A round cord seal 10 is inserted between these legs 4d and 4e in an undercut groove 4f.

The inner leg 4e of each latching claw 4c is provided with a longitudinal bead 4g which is latched behind by a likewise longitudinal bead 5d or 6d of the free leg 5c or 6c of the extruded profiles 5 or 6.

At a distance parallel to the free leg 5c or 6c of the extruded profiles 5 and 6, a claw-like profile 5e or 6e runs against the leg 5c or 6c, which overlaps the leg 4e of the inner extruded profile 4 and is held in sealing contact with the round cord seal 10 . The profiles 5e and 6e are in turn encompassed by the longitudinal web 4d of the locking claws 4c of the inner extruded profile 4, so that they form the outer longitudinal termination of the inner extruded profile 4 with respect to both extruded profiles 5 and 6.

On the back of the inner extruded profile 4, a hook profile 4h is integrally formed above the air passage openings or lattice perforations 9, which has an upward, free hook leg 4i, which ends at a predetermined distance below the free leg 5c of the upper extruded profile 5.

Below this hook profile 4i and also below the air passage openings or grille perforation 9, an undercut longitudinal groove 4k is in turn formed in the back of the inner extruded profile 4, each of which forms a holder for a rubber or plastic lip seal 13.

The back of the inner extruded profile 4 is also pivotally associated with a flap 14 formed by an extruded profile, namely a hollow profile, its suspension consisting of a hook profile 14a integrally formed along its upper longitudinal edge, which has the upward leg 4i of the hook profile 4h on the inside Extruded profile 4 engages from above.

The hook profile 14a of the rattle 14 is simply hooked from above into the free leg 4i of the hook profile 4h on the inner extruded profile 4, its approximately triangular profiled inner surface 14b being pivotally supported on the circular end surface of the hook leg 4i.

Above the hook profile 14a of the flap 14 is overlapped by the free leg 5c of the extruded profile 5 with little play, the leg 5c forming a securing web which counteracts the hook profile 14a from being detached as long as the inner extruded profile 4 by the snap-in connections with the extruded profiles 5 and 6 is held together. When the inner extruded profile 4 is released, the flap 14 with its hook profile 14a can easily be brought into and out of holding engagement with the hook profile 4h of the inner extruded profile 4.

From Fig. 5 of the drawing it can be seen that the flap 14 formed from a hollow extruded profile, in its vertically depending position, blocks the air passage openings or grille perforations 9 of the inner extruded profile 4, the lip seals 13 each having a seal Fold 14c on the flap 14 come into sealing engagement. 5 the flap 14 can be pivoted about its hook profile 14a relative to the inner extruded profile 4a into the open position according to FIGS. 2 and 3, so that the air passage openings or grille perforations 9 are released towards the inside of the housing 2.

The extruded hollow profile forming the flap 14 has on its inner longitudinal side two hook-shaped holding webs 14d facing one another for a strip or block of sound-absorbing material 15 in such a way that it is easily detachably connected to the flap 14 for cleaning purposes. On the long side opposite the hook profile 14a, the flap 14 is also provided with a dovetail or C-shaped undercut profiled longitudinal groove 14e, in which a locking rail 16 can be moved, with the aid of which the flap 14 can be seen in FIG. 5 Locked position, preferably on the two end plates 7a and 7b of the housing 2 and can be fixed in abutments formed there.

The Fig. 2 can be seen that there is the possibility, in the housing 2 of the ventilation device 1, an approximately C- or G-shaped profile 17 made of sound absorbing material, for. B. use foam rubber or foam plastic. On the one hand, this can have at least one opening 17b in its wall 17a adjacent to the hollow rib 3a of the outer extruded profile 3, while its slot-like longitudinal opening 17c in the opposite longitudinal wall 17d extends uninterruptedly over the entire length and - in the exemplary embodiment shown - approximately at the level of the suspension 14a, 4h of the flap 14 on the inner extruded profile 4.

In this way, an air-guiding and sound-absorbing channel 18a, 18b, 18c, 18d, which is wound several times in its cross-sectional direction, is formed within the housing 2, which leads to the interior of the room both when the flap 14 is closed and when it is open, by means of the strip or block attached to it is limited from sound absorption material 15. Of course, it would also be possible to design the profile made of sound-absorbing material 17 only approximately C-shaped or U-shaped, the flap 14 with the strip or block of sound-absorbing material 15 then being assigned to the open cross-sectional side of this sound-absorbing profile.

3 and 4 of the drawing it can be seen that an air guide chamber 19 can also be inserted into the housing 2 of the ventilation device 1. For this purpose, the upper extruded profile 5 and the lower extruded profile 6 are each provided with two longitudinal webs 5f, 6f and 5g, 6g projecting towards their inside, each of which has a distance from the main plane of the inner extruded profile 4 and the outer extruded profile 3. The air guide chamber 19 can be inserted between these longitudinal webs 5f, 6f and 5g, 6g, as can be clearly seen in FIG. 3. This air guide chamber 19 is formed by two molded parts 19b and 19c which are symmetrical about a horizontal longitudinal center plane 19a-19a and by a connecting part 20 assigned to them.

The two molded parts 19b and 19c of the air guiding chamber 19 delimit a tubular air passage 19d towards the outer extruded profile 3, while they further determine passage openings 19e and 19f directed therefrom from opposite sides, as can be seen in FIGS. 3 and 4.

The two molded parts 19b and 19c can each be individually inserted into the housing 2 of the ventilation device with the inner extruded profile 4 removed and inserted between the longitudinal webs 5f, 5g and 6f, 6g in a mirror-inverted position. By mutually longitudinally displacing the two molded parts 19b and 19c, they then come into coincidence with one another, as can be seen in FIGS. 3 and 4. Then they can then be fixed relative to one another by inserting and fastening the releasable connecting part 20 forming the rear wall of the air guide chamber. The position fixing of the air guide chamber 19 in the longitudinal direction of the housing 2 can be effected by means of the molded parts made of sound-absorbing material 17, which can then be inserted into the housing 2 of the ventilation device 1 on both sides of the air guide chamber 19.

The tubular air passage 19d is in constant communication with the air passage openings 8 in the outwardly projecting, approximately trapezoidal profiled hollow rib 3a of the outer extruded profile 3, and possibly also over those length regions of the hollow rib 3a which are shielded inward by the sound absorbing material 17 2, 4 and 4ʹ to be removed. The through-openings 19e and 19f of the air guiding chamber 19 directed towards the side, however, are only connected to the air guiding and sound absorption channels 18a, 18b, 18c, 18d within the sound absorption material 17. For this purpose, the sideways sections of the air guide chamber 19 are provided with slot-shaped incisions 19g and 19h over their entire height, that is to say on both molded parts 19b and 19c, as can be seen in FIG. 4. The slot-shaped incisions 19g are located on the side of the air guide chamber 19 facing the inner extruded profile 4, while the slot-shaped incisions 19h are assigned to the area of the housing 2 adjacent to the outer extruded profile 3.

While in each case only one slot-shaped incision 19g is formed on each side of the air guide chamber 19, the slot-shaped incisions 19h are each provided several at a distance in the direction of the depth of the air guide chamber 19. In the slot-shaped incisions 19g can extend over the entire height of the housing 2 of the ventilation device 1 air baffle 21 with one end 21a, while the other end 21b is brought into engagement with the profiles made of sound-absorbing material 17. A similar air baffle 22 can be inserted into any slot-like incision 19h bring one end 22a into engagement, while the other end 22b also engages with the profile made of sound-absorbing material 17. The air is guided through the free space 23 between the two guide walls 21 and 22, the cross section of this free space 23 following the air guide chamber 19 being able to be varied to the extent that the various slot-like incisions 19h allow.

If necessary, a blower 24 can also be installed in the air guide chamber 19, which is preferably designed as an axial fan. The impeller or the propeller 24a of this axial fan 24 is received within the tubular air passage 19d, as can be seen from the dash-dotted lines in FIGS. 3 and 4. The stator or drive motor 24b of this axial fan 24, on the other hand, projects rearward into the air guide chamber 19 and is fastened there on the wall forming the connecting part 20 between the two molded parts 19b and 19c.

It is obvious that the guide walls 21 and 22 between the air guide chamber 19 and the molded parts made of sound-absorbing material 17 can also be made significantly shorter, as shown in FIG. 4. Namely, it is possible to design it so that the profiles made of sound-absorbing material 17 practically directly adjoin the air-guiding chamber 19 so that the guide walls 21 and 22 merely overlap their ends somewhat.

The construction of a ventilation device 1 described above makes it possible to build installation cross sections with a cross-sectional side length of the housing 2 of 80 to 100 millimeters, but nevertheless achieve good air throughput and good sound insulation.

6 of the drawing shows the overall view of a ventilation device 31 for rooms, which is preferably suitable for installation in fixed frames or sashes of windows, doors or the like, but which may also be used in slot-like wall openings or placed in front of wall openings can be. This ventilation device 31 has an elongated, rectangular housing 32, which consists of several longitudinal Extruded profiles 33, 34, 35, and 36 and two end plates 37a and 37b is assembled.

As can be seen particularly clearly in FIG. 7, the extruded profiles 33, 34, 35 and 36 can preferably be made of thin-walled light metal, while the two end plates 37a and 37b are made of plastic as injection molded parts. However, all of these components can also consist of the same material, for example light metal or plastic.

The shape of the extruded profiles 33, 34, 35 and 36 can be easily seen in FIG. 7 of the drawing. The outer extruded profile 33 of the housing 32 is provided with air passage openings 38 which are distributed over its length, as can easily be seen in FIG. 2. The inner extruded profile 34 of the housing 32 opposite the outer extruded profile 33 is arranged essentially upright and has air passage openings 39 which are distributed uniformly over its entire length and which are arranged, for example, in three rows one above the other and form a grille perforation, as clearly shown in FIG. 6 can be seen. The connection between the outer extruded profile 33 and the inner extruded profile 34 is formed by the essentially horizontally arranged, two extruded profiles 35 and 36, which have a matching profile cross-section, but are arranged symmetrically to one another with respect to a horizontal plane.

On the outwardly directed longitudinal edge, the two extruded profiles 35 and 36 each have a longitudinal, bead-shaped thickening 35a, 36a, with which a plastic profile rod 40 or 41 manufactured by extrusion can be brought into a form-fitting holding engagement via a complementary longitudinal groove 40a or 41a. Each of the plastic profile bars 40 and 41 has on its undercut profile groove 40a and 41a against Overlying longitudinal side an undercut profile bead 40b or 41b, which in turn can be brought into a positive locking connection with a complementary longitudinal groove 33a or 33b on both longitudinal edges of the outer extruded profile 33. The plastic profile bars 40 and 41 produce a heat-insulating holding connection between the outer extruded profile 33 and the upper extruded profile 35 and the lower extruded profile 36 of the housing 32 in this way.

The inner longitudinal edge of the extruded profile 35 and 36 is provided with an approximately Z-shaped bend 35b or 36b, the free leg 35c or 36c of which interacts with the inner extruded profile 34 as an alignment and holding element. For this purpose, the inner extruded profile 34 has an angled portion 34a and 34b on each of its two longitudinal edges, which surrounds the free leg 35c and 36c on the outside.

On the back of the inner extruded profile 34, a hook profile 34c is integrally formed above the air passage openings or lattice perforations 39, which has an upward, free hook leg 34d, which ends at a predetermined distance below the free leg 35c of the upper extruded profile 35.

The rear of the inner extruded profile 34 is also pivotally associated with a flap 44 formed by an extruded profile, namely a hollow profile, its suspension consisting of a hook profile 44a integrally molded along its upper longitudinal edge, which on the inner side has the upwardly directed leg 34d of the hook profile 34c Extruded profile 34 engages from above.

The hook profile 44a of the flap 44 is simply hooked from above into the free leg 34d of the hook profile 34c on the inner extruded profile 34, its inner surface being pivotally supported on the circular end surface of the hook leg 34d.

Above the hook profile 44a of the flap 44 is overlapped by the free leg 35c of the extruded profile 35 with little play, the leg 35c forming a securing web which counteracts the hook profile 44a from being detached as long as the inner extruded profile 34 by the snap-in connections with the extruded profiles 35 and 36 is held together. When the inner extruded profile 34 is released, however, the flap 44 with its hook profile 44a can easily be brought into and out of holding engagement with the hook profile 34c of the inner extruded profile 34.

The extruded hollow profile forming the flap 44 has on its inner longitudinal side two hook-shaped retaining webs 44b and 44c for a strip or block 45 made of sound-absorbing material, such that it is easily detachably connected to the flap 44 for cleaning purposes.

From Fig. 7 it can also be seen that in the housing 32 of the ventilation device 31 approximately C-shaped profiles 47 made of sound-absorbing material, e.g. Foam rubber or foam plastic, sit. These profiles 47 are formed in the simplest manner from a flat strip of material, which is inserted transversely into the housing 32 when the inner extruded profile 34 has been removed and thereby receives a double kink 47a, 47b in the longitudinal direction, so that a profile web 47c with two on it subsequent profile legs 47d and 47e is formed. The C-shaped profile 47 formed in this way is held exclusively under internal stress within the housing 32, the free end edges 47f and 47g of the legs 47d and 47e being securely supported against the inner surfaces of the vertical webs on the Z-shaped bends 35b and 36b.

The cross-sectionally C-shaped profiles 47 made of sound-absorbing material each enclose a sound-absorbing duct 48 on three sides within the housing 32, two such sound-absorbing ducts 48 originating from an air guiding chamber 49, which is accommodated within the housing 32, as can be seen in FIG. 8.

The air guide chamber 49 has a tubular air passage 49a towards the outer extruded profile 33, while it also has passage openings 49b and 49c directed from this to opposite sides, to which the sound absorption channels 48 then connect.

From the air guide chamber 49, following the passage openings 49b and 49c, relatively short laminate tongues 50a and 50b between the legs 47d and 47e of the C-shaped profiles 47 protrude into the sound absorption channels 48 and cover their opening side over corresponding length sections in the direction of the flap 44 from.

The laminate tongues 50a and 50b are advantageously part of a plate 50 made of soundproof material, which can be detachably connected to the housing of the air guide chamber 49. The length of the laminate tongues 50a and 50b is in each case dimensioned such that it corresponds approximately to the clear cross-sectional height of the C-profile 47 between its two legs 47d and 47e. It has been shown that such a relatively small length dimension of the laminated tongues 50a and 50b is sufficient to work together with the air guiding chamber 49, which acts as a flow switch for the air, and the sound absorption channels 48 connected to its through openings 49b and 49c to achieve. Over most of its length, the sound absorption channels 48 formed by the C-shaped profiles 47 can remain completely open towards the flap 44 or to the air passage openings or grille perforations 39 without a reduction in the sound absorption effect. Cleaning and / or replacement work of the C-shaped profiles 47 formed from the flat material strips are thereby considerably facilitated. After removal of the inner extruded profile 34 with the flap 44, they are easily accessible from the inside in the housing 32.

7 and 8 can also be seen that the cross-sectionally C-shaped profiles 47 made of sound absorbing material within the A multilayer wall 51 is in front of the housing 32 on the outside. The two cover layers 51a and 51b of this multilayer wall 51 each consist of relatively thin, sound-resistant material, for example of hard plastic and / or of metal sheet which acts as a weighting element. The intermediate layer 51c, on the other hand, is formed by relatively thick sound-absorbing material, for example cellular rubber, foam plastic or also a non-woven fabric.

The width of the multilayer wall 51 is dimensioned such that it can be inserted into the housing 32 of the ventilation device 31 without any problems and its longitudinal edges can be fixed in position between the two extruded profiles 35 and 36, as can be seen from FIG. 7.

If necessary, a fan can also be inserted into the air guide chamber 49 and possibly into its air passage 49a. This can be carried by the plate 50, which is releasably attached to the housing of the air guide chamber 49.

FIG. 9 shows the overall view of a ventilation device 61 for rooms, which is preferably suitable for installation in fixed frames or sashes of windows and doors, which, however, can also be used in slot-like wall openings, if necessary.

The ventilation device 61 has an elongated, cuboid housing 62 which is composed of a plurality of longitudinally extruded profiles 63, 64, 65 and 66 and two end plates 67a and 67b.

The extruded profile 63 is formed by three extruded profile parts 63a, 63b and 63c, which are connected to one another by longitudinal locking and / or clamping couplings 63e and 63f. The extruded profile parts 63a and 63b are preferably made of thin-walled light metal, while the extruded profile part 63c consists of hard plastic. The extruded profile parts 64, 65 and 66 can also advantageously be made from thin-walled light metal, while the end plates 67a and 67b are in turn made from plastic, for example as injection molded parts.

The shape of the extruded profiles 63, 64, 65 and 66 or the extruded profile parts 63a, 63b and 63c can be seen in detail from FIG. 10. The result is that the extruded profile 63 forming the outer wall of the housing 62 is arranged essentially upright and its extruded profile part 63a has a longitudinally extending, outwardly projecting and downwardly open hollow rib 63g which has an upper, inclined profile wall 63h and a perpendicular Has profile wall 63i.

The hollow rib 63g completely overlaps the extruded profile part 63c from above, the lower edge of its profile wall 63i extending as a drip nose over the upper edge of the lower extruded profile part 63b.

The extruded profile 64 forms the inner wall of the housing 62 and is also arranged essentially upright. It has air passage openings 69 which are distributed uniformly over its entire length and which are arranged, for example, in three rows one above the other and form a grille perforation, as can be clearly seen in FIG. 9. The connection between the outer extruded profile 63 and the inner extruded profile 64 is formed by the substantially horizontally arranged two extruded profiles 65 and 66, which have the same profile cross-section but are arranged symmetrically to a horizontal plane.

On the outwardly directed longitudinal edge, the two extruded profiles 65 and 66 each have a longitudinal, bead-shaped thickening 65a or 66a, with which a plastic profile rod 70 or 71 produced by extrusion via a complementary longitudinal groove 70a or 71a in a form-fitting manner Hold intervention can be brought. Each of the plastic profile bars 70 and 71 has on its longitudinal side opposite the cut profile groove 70a or 71a an undercut profile bead 70b or 71b, which in turn can be brought into a positive locking connection with a complementary longitudinal groove 63k or 631 on both longitudinal edges of the extruded profile 63 . The plastic profile bars 70 and 71 produce a heat-insulating holding connection between the outer extruded profile 63 and the upper extruded profile 65 and the lower extruded profile 66 of the housing 62 in this way. The inner longitudinal edge of the extruded profiles 65 and 66 is provided with an approximately Z-shaped bend 65b to 66b, the free leg 65c or 66c of the same interacting with the inner extruded profile 64 as an alignment and holding element. For this purpose, the inner extruded profile 64 has an angled portion 64a and 64b on each of its two longitudinal edges, which surrounds the free leg 65c and 66c on the outside.

On the back of the inner extruded profile 64, a hook profile 64c is integrally formed above the air passage openings or getter perforations 69, which has an upward, free hook leg 64d which ends at a predetermined distance below the free leg 65c of the upper extruded profile 65.

A flap 72, which is also formed by an extruded profile, namely a hollow profile, is pivotally assigned to the rear of the inner extruded profile 64, its suspension consisting of a hook profile 72a integrally molded along its upper longitudinal edge, which on the inner side has the upwardly directed leg 64d of the hook profile 64c Extruded profile 64 engages from above, so that the flap 72 is pivotally held. In its vertically depending position, the flap 72 closes off the air passage openings or lattice perforations of the inner extruded profile 64, while in its opening position it assumes the inclined position shown in FIG. 10 and thereby releases the air passage openings or lattice perforations 69.

The back of the flap 72 is covered with a strip 73 of soundproofing material, for example foam plastic or foam rubber.

In Fig. 11 it can be seen that air passage openings 68 can be formed in the extruded profiles 63 forming the outer wall of the housing 62 simply by dividing the central extruded profile part 63c into a larger number of longitudinal sections, the ends of which face each other after the connection with the two extruded profile parts 63a and 63b the desired distance from each other. The number and length of the outer air passage openings 68 can therefore be matched to the most varied of needs in the simplest way and, if necessary, even be varied subsequently.

From Fig. 10 it can still be seen that there is the possibility of forming a sound insulation duct 74 within the housing 62 of the ventilation device. This soundproofing duct 74 is delimited on the one hand by the central extruded profile part 63c of the extruded profile 63 and on the other hand by three insulating strips 75, 76 and 77, which can be made of foam plastic or foam rubber, for example. The insulation strips 75, 76 and 77 are arranged so that they are inclined relative to one another and also realistically relative to the extruded profile part 63c in such a way that the soundproofing duct 74 has a trapezoidal cross section, as can be clearly seen from FIG. 10.

Each of the two insulation strips 75 and 76 is releasably or removably clamped on the one hand on the longitudinal edge of the central extruded profile part 63c and on the other hand on longitudinal webs or strips 78 and 79 of the extruded profiles 65 and 66, as can be seen in FIG. 10.

The insulation strip 77 is also held between the longitudinal webs or strips 78 and 79 and on its side facing away from the sound insulation duct 74 with a plate 80 made of weight material, for example Sheet metal, occupied. To additionally secure the position of the insulation strip 77 and the plate 80 made of weight material with its longitudinal edges in the trough-shaped profiled longitudinal webs or strips 78 and 79, spring clips 81 are used, with their ends behind retaining webs 82 and 83 on the inside of the extruded profiles 65 and 66 are indented.

A free space 85 is maintained within the housing 62 of the ventilation device between the inner extruded profile 64 and the insulation strip 77 or the plate 80, within which the flap 72 is pivotally received.

The insulation strip 77 and also the plate 80 of weight material carried by it are either provided with openings distributed in their longitudinal direction or they are formed by a plurality of sections which are divided in the longitudinal direction and keep air passages free between their ends facing each other. In any case, the air passages which are kept free in the area of the insulating material strip 77 or the plate 80 are arranged offset to the side relative to the air passage openings 68 in the outer extruded profile 63, with a gap.

It should only be mentioned that the inner extruded profile 64 of the housing together with the flap 72 is provided such that it can be removed easily. As a result, the interior of the housing 62 can be made easily accessible so that the insulating material strips 75, 76 and 77 enclosing the sound insulation duct 74 can be removed and cleaned or exchanged if necessary.

Fig. 12 of the drawing shows a ventilation device 101 for rooms in an overall view, which is preferably suitable for installation in fixed frames or sashes of windows and doors, which, however, at Can also be used in slit-like wall openings or placed on a wall.

The ventilation device 101 has an elongated, rectangular housing 102 which is composed of an outer or rear wall 103, an inner or front wall 104, a top wall 105, a bottom wall 106 and two end plates 107a and 107b. 10 shows that the outer wall 103, the front wall 104, the top wall 105 and the bottom wall 106 can each consist of thin-walled extruded profiles, which are preferably made of light metal. The outer wall 103 is provided with air passage openings 108, which can be provided distributed over their entire length at greater intervals.

In the front wall 104, on the other hand, there are air passage openings 109 in the form of a grille perforation which extends uniformly over the entire length and consists of several, for example three, rows of curls one above the other.

The outer wall 103 is locked at its longitudinal edges via plastic profile bars 110 and 111 with the longitudinal edges of the top wall 105 and the bottom wall 106 facing it, the plastic profile bars 110 and 111 forming a cold bridge between the outer wall 103 on the one hand and the top wall 105 and the bottom wall 106 on the other hand. Inside the housing 102, on the back of the inside or. Front wall 104, a closure flap 112 is pivotally suspended at 113, with the aid of which the air passage openings or grille perforations 109 of the front wall 104 can optionally be opened or closed. In Fig. 13 the closure flap 112 is shown in its open pivot position. On its longitudinal edge opposite the pivot bearing 113, the closure flap 112 is provided with a dovetail or C-shaped undercut longitudinal groove 114, in which a thrust rod 115 can be accommodated in a longitudinally movable manner, which in the exemplary embodiment according to FIG. 13 has a flat, rectangular cross section. However, if necessary, it can also have a T-shaped cross section, in which case the T-web protrudes from the opening gap of the longitudinal groove 114, as is indicated in FIG. 13 by dash-dotted lines.

A ventilation drive and locking gear is assigned to the ventilation device 101 according to FIG. 12, of which only the adjusting lever 116 can be seen in the area of the end plate 107b.

As a comparison of FIGS. 14 and 15 with FIG. 13 makes clear, the end plate 107b has an outline shape which is exactly adapted to the cross section of the housing 102 of the ventilation device 101. The end plate 107b has a cup-like shape, i.e., web-like walls 118 protrude along its boundary edges, which have at least one course that overlaps the walls 103, 104, 105, 106 of the housing 102. The various wall bars are therefore identified by the reference numerals 118³, 118⁴, 118⁵ and 118⁶. In the area of the wall webs 118⁴, the end plate 107b is provided with a cutout 119, in the area of which the actuating lever 116 of the rotary drive and locking gear projects at least with its actuating cam 120 from the housing 102. The actuating lever 116 has a plate 121 with a bearing eye 122, which can be attached from the side to a bearing pin or a bearing sleeve 123, which protrudes from the inner surface of the end plate 107b in the same direction as the wall sections 118³ to, following its actuating cams 118⁶. By means of the bearing eye 122, the plate 121 of the adjusting lever 116 on the bearing pin or the bearing sleeve 123 can be pivoted in the cutout 119 between two end positions, one of which can be seen in FIG. 14 and the other in FIG. 15.

14, the actuating cam 120 of the actuating lever 116 lies at the upper end of the cutout 119 in the end plate 107b, while it is in the other pivot position at the lower end of this section 119.

The plate 121 of the actuating lever 116 is designed such that it protrudes approximately segment-like from the cutout 119 in the pivoted position according to FIG. 11 with an arcuate surface 124, while it closes the cutout 119 flush with a flat surface 125 in the pivoted position according to FIG. 15 .

At least in the respective side surface 126 facing away from the end plate 107b, the plate 121 of the actuating lever 116 has a lifting curve 127 which is designed as a set-open groove and is at least over a part of its length a varying distance relative to the bearing 122, 123 of the actuating lever 116 . The effective length of the lifting curve 127 is matched to the maximum pivoting angle of the actuating lever 116, the end region thereof having the greatest distance from the bearing 122, 123 extending concentrically to this bearing 122, 123 over a certain arc angle. The adjoining length range of this stroke curve 127, however, approaches the bearing 122, 123 of the actuating lever 116 to a minimal distance on a circular arc, the radius of which corresponds to approximately a quarter of the radius of the concentric section.

A pin 128 or a similar projection is in engagement with the stroke curve 127 designed as a cam groove in the plate 121 of the actuating lever 116, which is fastened to the end of the closure flap 112 adjacent to the actuating lever 116 in such a way that it engages with the bearing 113 can shift an arc. In the pivot position of the adjusting lever 116 shown in FIG. 14, the pin 128 or similar projection of the closure flap 112 lies in the region of the lower end of the lifting curve 127, that is to say it is at its smallest distance from the bearing 122, 122 of the adjusting lever.

15, however, the pin 128 or similar projection of the closure flap 112 has reached the region of the upper end of the lifting curve 127 which has the greatest distance from the bearing 122, 123 for the adjusting lever.

It is readily apparent that by pivoting the adjusting lever 116 between its two end positions shown in FIGS. 14 and 15, the closure flap 112 can be moved relative to the inner or front wall 104 of the housing 102 of the ventilation device 101 about the pivot bearing 113, whereby it moves from the open pivot position according to FIGS. 10 and 11 into the closed position according to FIG. 14 and vice versa. In the closed position according to FIG. 14, the closure flap 112 is locked at one end by the interaction of the pin 128 or the like with the lifting curve 127.

By designing the cam curve 127 as a cam groove or cam slot, the closure flap 112 is positively controlled in both possible directions of movement by the actuating lever 116 via the pin 128 or the like.

At least in the side surface 126 of the plate 121 facing away from the end plate 107b, both in the radial direction and in the circumferential direction with an offset in relation to the lifting curve 127, a depression 129 is formed, which has a second lifting curve 130 which runs inclined transversely to the pivoting plane of the actuating lever 116 in the side surface 126 of the plate 121 runs out. The end region of the lifting curve 130 which runs out into the side surface 126 lies in the vicinity of the actuating cam 120 for the actuating lever 116, as can be clearly seen in FIGS. 14 and 15.

16 and 18 of the drawing, the end 115 1 of the push rod 115 facing the swivel lever 115 of the swivel drive and locking mechanism cooperates with the trough 129, the stroke curve 130 emanating therefrom, and the side surface 126 of the drawing, which cooperates in the undercut profiled longitudinal groove 114 of the closure flap 112 is guided to be longitudinally movable.

14, the end 115 1 of the push rod 115 is received by the trough 129 in the side surface 126 of the plate 121, i.e. it protrudes relatively far from the end of the closure flap 112 facing the end plate 107b. If the adjusting lever 116 is moved from the swivel position according to FIG. 14 in the direction of the swivel position according to FIG. 15, then the end 115 1 of the push rod 115 runs inside the trough 129 onto the lifting curve 130 which is inclined transversely to the swivel plane and thereby gradually becomes on it 15 to the adjacent end of the closure flap 112 until it rests in the pivoted position according to FIG. 15 on the side surface 126 of the plate 121, as can be seen particularly clearly from FIG. 16.

The end 115 2 of the push rod 115 assigned to the other end of the closure flap 112 cooperates in the region of the end plate 107 a of the housing 102 as a locking piece with a locking engagement or abutment 131, the arrangement and design of which can be seen in FIGS. 17 and 18 of the drawing. 18 makes it clear that the bolt engagement or the abutment 131 has a bevel 132 which is arranged at an angle to the plane of the end plate 107a and also to the direction of movement of the push rod 115. The pull-in slope 132 is placed such that when the push rod end 115 2 strikes it, the closing flap 112 guiding the push rod 115 is pressed in the direction of its closed position against the back of the inner or front wall 104 of the housing 102 and the air passage openings or grille perforations are flown 109 seals in this.

So that the pressure effect of the closure flap 112 can be varied by the end 115 2 of the push rod 115, the locking engagement or the abutment 131 is provided parallel to the plane of the end plate 107 b, preferably continuously, in an adjustable or adjustable manner. For this purpose, he sits in an end piece 133, which closes the cutout 119 in the wall section 118⁴ of the end plate 107b with support with a support plate 134 and in this case, by means of a loop 135, encloses the bearing pin or bearing neck 123 on the inside of the end plate 107a in a fixing manner. The bolt engagement or the abutment 131 with the bevel 132 consists of a metal bracket, preferably made of spring steel, which is received with its one leg 131¹ and its web 131² in a guide 136 of the insert piece 133, while its leg 131³ with the one starting from the web 131² Tightening bevel 132 protrudes sideways out of the guide 136, as can be seen in FIG. 18.

The web 131² of the bolt engagement or abutment 131 contains a threaded hole 137 which is penetrated by the shaft of a screw 138 which is only rotatable with its head 139, but is axially immovable in a holder 140 on the wall 134 of the insert piece 133. In front of the holder 140 there is a hole 141 in the wall 134 through which a screwdriver can be brought into engagement with the slot in the screw head 139. By turning the screw, the bolt engagement or the abutment 131 can be shifted in the guide 138 of the insert piece 133, so that the bevel 132 is also subject to a corresponding change in position in order to adjust the pressing action of the push rod 115 over its end 115 2.

The push rod 115 can preferably be made of wear-resistant plastic, its end 115 2 being subject to a certain elasticity of the leg 131 3 with the bevel 132 on the locking engagement or abutment 131 and thereby also exerting a resilient pressing action on the closure flap 112.

It is advantageous if, on the one hand, the adjusting lever 116 is designed symmetrically transversely to its swivel plane, that is to say that it has stroke curves 127, troughs 129 and stroke curves 130 on both side surfaces 126 of its plate facing away from one another, as is clear from FIG. 16. On the other hand, the insert 133 also has a symmetrical design a plane that is parallel to the end plates 107a and 107b. As a result, there is the possibility of assigning both the adjusting lever 116 and the insert piece 133 either to the end plate 107a or to the end plate 107b without any problems. The swivel drive and locking gear for the closure flap 112 can therefore be changed at any time, that is to say subsequently, in its installed position for the housing 102 of the ventilation device 101.

14 and 15 of the drawing show that the plate 121 of the actuating lever 116 can be provided at a point approximately diametrically opposite the actuating cam 120 with a toothed segment 142 with which the pinion of an electric servomotor can be brought into engagement, if it is desired to actuate the swivel drive and locking gear by an electric servomotor, which is then housed within the housing 102 of the ventilation device 101. In addition, the plate 121 of the actuating lever 116 can also be equipped with a driver 143, for example in the form of a radial slot, with which an electrical switching and / or regulating element can be coupled if the ventilation device is equipped with an electrically driven fan.

By means of the swivel drive and locking gear, the drive motor of the blower can be switched on and off, and its speed can also be regulated thereby, whereby the swivel angle of the adjusting lever 116 can be a measure of the working speed of the blower.

If the push rod 115 has a T-shaped cross section, it can be provided with a T-web 115 3 protruding from the groove 114 with teeth running in its longitudinal direction. A longitudinal toothed rail 44 is then assigned to it on the inner or front wall 104, as shown in FIG. 13, for example in an undercut groove 104 1 thereof can be inserted in the longitudinal direction. Due to the contraction of the T-web 115³ and the toothed rail 144, the closure flap 112 can then be locked and pressed on over its entire length in the closed position.

Fig. 19 of the drawing shows a ventilation device 20 for rooms in an overall view, which is preferably suitable for installation in fixed frames or sashes of windows and doors, but which can also be used in slot-like wall openings or placed on the wall if required.

The ventilation device 201 has an elongated, rectangular housing 202 which is composed of an outer or rear wall 203, an inner or front wall 204, a top wall 205, a bottom wall 206 and two end plates 207a and 207b. 20 that the outer wall 203, the front wall 204, the top wall 205 and the bottom wall 206 can each consist of thin-walled extruded profiles, which are preferably made of light metal. The outer wall 203 is provided with air passage openings 208, which can be provided at greater intervals over its entire length.

In the front wall 204, on the other hand, there are air passage openings 209 in the form of a grille perforation which extends uniformly over the entire length and consists of several, for example three, rows of curls one above the other.

The outer wall 203 is locked at its longitudinal edges via plastic profile bars 210 and 211 with the longitudinal edges of the top wall 205 and the bottom wall 206 facing it, the plastic profile bars 210 and 211 forming a cold bridge between the outer wall 203 on the one hand and the top wall 205 and the bottom wall 206 on the other hand. Inside the housing 202, on the back of its interior or front wall 204, a closure flap 212 is pivotally suspended at 213, with the aid of which the air passage openings or grille perforations 209 of the front wall 204 can optionally be opened or closed. In Fig. 20 the closure flap 212 is shown in its open pivot position.

On its longitudinal edge opposite the pivot bearing 213, the closure flap 212 is provided with a dovetail or C-shaped undercut longitudinal groove 214, in which a push rod 215 can be accommodated in a longitudinally movable manner, which in the exemplary embodiment according to FIG. 20 has a flat, rectangular cross section. However, if necessary, it can also have a T-shaped cross section, in which case the T-web protrudes from the opening slot longitudinal groove 214, as is indicated in FIG. 20 by dash-dotted lines.

19 is assigned a swivel drive and locking gear, of which only the control lever 216 can be seen in the area of the end plate 207b.

As a comparison of FIGS. 21 and 22 with FIG. 20 makes clear, the end plate 207b has an outline shape which is exactly adapted to the cross section of the housing 202 of the ventilation device 201. In this case, the end plate 207b has a cup-like shape, ie, web-like walls 218 protrude along its boundary edges, which have at least one course that overlaps the walls 203, 204, 205, 206 of the housing 202. The various wall webs are therefore identified with the reference symbols 218³, 218⁴, 218⁵ and 218⁶. In the area of the wall webs 218⁴, the end plate 207b is provided with a cutout 219, in the area of which the actuating lever 216 of the swivel drive and locking gear projects at least with its actuating cam 220 from the housing 202. The actuating lever 216 has a plate 221 in connection with its actuating cam with a bearing eye 222, which from the side onto a bearing pin or Bearing sleeve 223 is plugged, which protrudes from the inner surface of the end plate 207b in the same direction as the wall sections 218³ to 218⁶. By means of the bearing eye 222, the plate 221 of the actuating lever 216 on the bearing pin or the bearing sleeve 223 can be pivoted in the cutout 219 between two end positions, one of which can be seen in FIG. 21 and the other in FIG. 22.

21, the actuating cam 220 of the actuating lever 216 is located at the upper end of the cutout 219 in the end plate 207b, while in the other pivoted position it is located at the lower end of this cutout 219.

The plate 221 of the actuating lever 216 is designed in such a way that in the pivoted position according to FIG. 21 it projects with an arcuate surface 224 from the cutout 219 approximately segment-like, while in the pivoted position according to FIG. 22 with a flat surface 225 the cutout 219 is flush closes.

At least in the respective side surface 226 facing away from the end plate 207b, the plate 221 of the actuating lever 216 has a lifting curve 227 which is designed as a laterally open groove and has a varying distance relative to the bearing 222, 223 of the actuating lever 216 over at least part of its length . The effective length of the lifting curve 227 is matched to the maximum pivoting angle of the actuating lever 216, wherein it runs in a straight line and at an angle between its two end regions, and approaches the bearing 222, 223 to a minimum distance.

The cam 227 in the plate 221 of the actuating lever 216 is engaged by a pin 228 or a similar projection which is fastened to the end of the closure flap 221 adjacent to the actuating lever 216 such that it moves with the bearing 213 on a circular arc can. In the pivot position of the adjusting lever 216 shown in FIG. 21, the pin 228 or similar projection of the closure flap 212 lies in the region of the lower end of the lifting curve 227, ie it is at its smallest distance from the bearing 222, 223 of the adjusting lever 216.

In contrast, in the pivoted position of the control lever 216 according to FIG. 22, the pin 228 or similar projection of the closure flap 212 has reached the region of the upper end of the lifting curve 227, which has the greatest distance from the bearing 222, 223 for the control lever 216.

It is readily apparent that by pivoting the adjusting lever 216 between its two end positions shown in FIGS. 21 and 22, the closure flap 212 can be moved relative to the inner or front wall 204 of the housing 202 of the ventilation device 201 about the pivot bearing 213, whereby it comes from the open pivot position according to FIGS. 20 and 21 into the closed position according to FIG. 22 and vice versa. In the closed position according to FIG. 22, the closure flap 212 is locked at one end by the cooperation of the pin 228 or the like with the lifting curve 227.

Due to the design of the lifting curve 227, the closure flap 212 is positively controlled in both possible directions of movement via the adjusting lever 216 via the pin 228 or the like.

At least in the side surface 226 of the plate 221 facing away from the end plate 207b, a recess 229 is formed, both in the radial direction and in the circumferential direction at an angle relative to the lifting curve 227, which has a second lifting curve 230 which is inclined transversely to the pivoting plane of the actuating lever 216 226 of the plate 221 leaks. The end region of the lifting curve 230 that runs out into the side surface 226 lies in the vicinity of the actuating cam 220 for the actuating lever 216, as can be clearly seen in FIGS. 21 and 22.

23 and 24 of the drawing, the end 215 1 of the push rod 215 facing the swivel lever 216 of the swivel drive and locking mechanism cooperates with the trough 229, the stroke curve 230 emanating therefrom and the side surface 226 of the drawing, the longitudinal groove 214 formed in the undercut profiled groove 214 the closure flap 212 is guided to be longitudinally movable.

With the actuating lever 216 in the pivoted position according to Fig. 21, the end 215 1 of the push rod 215 is received by the trough 229 in the side surface 226 of the plate 221, i.e. it protrudes relatively far from the end of the closure flap 212 facing the end plate 207b. If the adjusting lever 216 is moved from the pivot position according to FIG. 21 in the direction of the pivot position according to FIG. 22, then the end 215 1 of the push rod 215 runs inside the trough 229 onto the lifting curve 230 inclined transversely to the pivot plane and thereby gradually becomes on it 22 to the adjacent end of the closure flap until it rests in the pivoted position according to FIG. 22 on the side surface 226 of the plate 221, as can be seen particularly clearly from FIG.

The end 215² of the push rod 215 assigned to the other end of the closure flap cooperates in the region of the end plate 207a of the housing 202 as a locking piece with a locking engagement or abutment 231, the arrangement and design of which can be seen in FIGS. 24 and 25 of the drawing. 25 makes it clear that the bolt engagement or the abutment 231 has a bevel 232 which is arranged at an angle to the plane of the end plate 207a and also to the direction of movement of the pushing days 215. Here, the pull-in slope 232 is placed such that when the push rod end 215 2 strikes the closing flap 212 guiding the push rod 215 in the direction of its closed position towards the rear of the inner or. Front wall 204 of the housing 202 is pressed and consequently closes the air passage openings or grille perforations 209 in it in a sealing manner.

So that the pressure effect of the closure flap 212 can be varied by the end 215² of the push rod 215, the locking engagement or the abutment 231 is provided parallel to the plane of the end plate 207b, preferably continuously adjustable or adjustable. For this purpose he sits in an insert 233 which closes the cutout 219 in the wall section 218⁴ of the end plate 207a with support with a support plate 234 and thereby includes the bearing pin or bearing neck 223 fixing the inside of the end plate 207a by means of a loop 235. The bolt engagement or the abutment 231 with the bevel 232 consists of a metal bracket, preferably made of spring steel, which is received with its one leg 231¹ and its web 231² in a guide 236 of the insert 233, while its leg 231³ with that of the web 231² outgoing tightening slope 232 protrudes sideways out of the guide 236, as can be seen in FIG. 25.

The web 231² of the bolt engagement or abutment 231 contains a threaded hole 237, which is penetrated by the shaft of a screw 238, which is only rotatable with its head 239, but axially immovable in a holder 240 on the wall 234 of the insert 233. In front of the holder 240 there is a hole 241 in the wall 234 through which a screwdriver can be brought into engagement with the slot in the screw head 239. By turning the screw, the bolt engagement or the abutment 231 can be shifted in the guide 238 of the insert 233, so that the bevel 232 is also subject to a corresponding change in position in order to adjust the pressure effect of the push rod 215 over its end 215².

The push rod 215 can preferably be made of wear-resistant plastic, its end 215² being subject to a certain elasticity of the leg 231³ with the bevel 232 on the locking engagement or abutment 231 and thereby also exerting a resilient impression effect on the closure flap 212.

It is advantageous if, on the one hand, the actuating lever 216 is designed symmetrically transversely to its pivoting plane, that is to say that it has lifting curves 227, troughs 229 and lifting curves 230 on both side surfaces 226 of its plate 221, as shown in FIG. 23. On the other hand, the insert 233 also has a symmetrical design to a plane that runs parallel to the end plates 207a and 207b. As a result, it is easily possible to assign both the setting lever 216 and the insert 233 to either the end plate 207a or the end plate 207b. The swivel drive and locking gear for the closure flap can therefore be changed at any time, that is to say subsequently, in its installed position for the housing 202 of the ventilation device 201.

21 and 22 of the drawing show that the plate 221 of the actuating lever 216 can be provided at a point diametrically opposite the actuating cam 220 with a toothed segment 242 with which the pinion of an electric servomotor can be brought into engagement if it is is desired to actuate the swivel drive and locking gear by an electric servomotor, which is then housed within the housing 202 of the ventilation device 201. In addition, the plate 221 of the actuating lever 216 can also be equipped with a driver 243, for example in the form of a radial slot, with which an electrically safe switching and / or regulating element 244 can be coupled if the ventilation device 201 is equipped with an electrically driven fan 245 becomes. The switching and / or regulating element 33 is indicated in FIGS. 21, 22 and 23 of the drawing by dash-dotted lines.

Due to the swivel drive and locking gear, the drive motor of the blower 245 can not only be switched on and off; rather, its speed can also be regulated thereby, the pivoting angle of the adjusting lever 216 being a measure of the working speed of the fan 245.

If the push rod 215 has a T-shaped cross section, its T-web 215 3 protruding from the groove 214 can be provided with teeth running in its longitudinal direction. According to FIG. 20, it is then attached to the inside or. Front wall 204 assigned a longitudinal toothed rail 244 which, e.g. can be inserted in an undercut groove 204 1 thereof in the longitudinal direction. By interlocking the T-bar 215³ and the toothed rail 244, the closure flap 212 can then be locked and pressed on over its entire length in the closed position.

The switching and / or regulating element 244 forms an essential component of a speed controller for the electric drive motor of the blower 245, the entire circuitry of which is shown in FIG. 26.

The switching and / or regulating element 244 has, as can be seen from FIGS. 21 and 22 as well as 25 and 26, two coaxial coils 247 and 248, one behind the other and inductively coupled to one another exclusively by a common, axially displaceable core 246, of which the Coil 247 forms a primary coil and coil 248 forms a secondary coil.

Via a bent connecting arm 249, which can be seen in particular in FIG. 25, the core 246 is in constant coupling engagement with the driver 243 of the actuating lever 216. By pivoting the actuating lever 216, the core 246 can therefore be axially displaced relative to the two coaxial coils 247 and 248 between the two end positions shown in FIGS. 21 and 22, with each pivoting angle of the actuating lever 216 having a very specific axial sliding position of the core 246 relative to coils 247 and 248.

In any case, the arrangement is such that the axially displaceable core 246 continuously passes through the secondary coil 248 over its entire length, while it is infinitely variable in relation to the primary coil 247 in its operative position between a maximum dimension according to FIG. 21 and a minimum dimension according to FIG. 22 can be relocated.

22, the primary coil 247 cannot induce any voltage in the secondary coil 248, in the axial sliding position of the core 246 according to FIG. 21, the highest possible voltage is induced by the primary coil 247 in the secondary coil 248.

Both coils 247 and 248 have a matching design. It has proven useful to use both for the primary coil 247 and for the secondary coil 248, which have a maximum diameter of 8.5 mm and a resistance of 1200 ohms with a length of 18 mm.

The inner diameter of the coils 247 and 248 is preferably approximately 3.5 mm, while the outer diameter of the core 246 immersed in them is preferably approximately 15% smaller, that is to say approximately 3 mm. It has proven useful to use a material for the core 246 which is usually used as a welding wire alloy.

The primary coil 247 of the switching and / or regulating element 244 can be connected via a capacitor 250 and possibly a resistor 251 connected in parallel to it as a spark extinguisher by means of a switching contact 252 to the AC network of, for example, 220 volt voltage, as is readily shown in the figure. 26 can be removed. A design is selected for the switching elements located in the primary circuit, by means of which a maximum working voltage of 8.5 volts is established in the primary coil 247. For example, the capacitor 250 has a capacitance of 0.1 uF for this purpose.

The secondary coil 248 of the switching and / or control element 244 forms, with a diode 253, a capacitor 254, at least one, but preferably a plurality of resistors 255a, 255b and 255c, and a transistor 256 and a bridge rectifier 257, the actual speed control circuit for the electric motor of the fan 245.

The operating voltage of the speed control circuit used to control the permeability of the bridge rectifier 257 is in the present case between 0.0 and 4.0 volts.

It has proven particularly useful when a so-called MOS FET transistor is used as transistor 256, because the built-in free-wheeling diode enables the speed controller to function optimally while avoiding voltage peaks.

The working range of the transistor 256 is adjusted by the three resistors 255a, 255b and 255c, the resistor 255a being at the G terminal, the resistor 255b at the S terminal and the resistor 255c at the D terminal of the transistor 256.

The relay 258 shown in FIG. 26 with the two changeover contacts 258a and 258b can, if necessary, influence the direction of rotation of the fan 245 for the purpose of ventilating or venting the ventilating device 201.

The switching and / or regulating element 244 of the speed controller, which is equipped with the two coils 247 and 248 and the common core 246, works practically completely free of wear and, as a result, has a high long-term operational reliability with low production costs.

Claims (30)

1.Ventilation device for rooms with an elongated, rectangular housing (e.g. 2) which is composed of several longitudinal extruded profiles (e.g. 3, 4, 5, 6) and two end plates (e.g. 7a, 7b) and in which each extruded profile ( 3, 4, 5, 6) can optionally consist of light metal or plastic, an outer, essentially upright extruded profile (eg 3) optionally having an air passage opening (eg 8) at one or more points distributed over its length, while an opposing, also substantially upright, internal extrusion profile (e.g. 4) contains air passage openings (e.g. 9) which are evenly distributed over its entire length and which, through an additional adjustable extrusion profile (e.g. 14) assigned to it within the housing (e.g. 2) are either closable or releasable, and the outer (eg 3) and the inner extruded profile (eg 4) are essentially horizontal by upper and lower arranged, extruded profiles (eg 5 and 6) are held together,
characterized,
that the extruded profile which is adjustable within the housing (2) is designed as a flap (14) which is pivotally suspended (4h, 14a) about its upper, longitudinal edge,
that the suspension of the rattles (14) consists of a hook profile (14a) formed along this longitudinal edge,
and that the hook profile (14a) of the flap (14) has a hook profile (4h) directed opposite to it on the inner extrusion profile (4) overlaps (14b, 4i) and in turn by a web profile (5c) on which the upper extrusion profile (5) supporting or holding the inner extrusion profile (4) is supported and fixed (Fig. 2, 3 and 5). 2. Ventilation device according to claim 1,
characterized,
that the inner extruded profile (4) on its two longitudinal edges (4a, 4b) by means of C- or U-shaped ratchet claws (4c) in likewise C- or U-shaped counter-locking claws (5c, 5d, 5e or 6c, 6d, 6e) of the two extruded profiles carrying it (5 and 6) can be releasably locked and / or clamped (Fig. 5). 3. Ventilation device according to one of claims 1 and 2,
characterized,
that the flap (14) forming the extruded profile is a hollow profile, which has at least on its inner longitudinal side retaining webs (14d) for a strip or block of sound-absorbing material (15). 4. Ventilation device according to one of claims 1 to 3,
characterized,
that the flap (14) forming extrusion profile on its longitudinal edge facing away from the hook profile (14a) has a dovetail or. C-shaped undercut guide profile (14e), into which a locking rail (16) or the like can be inserted longitudinally and which is associated with abutments on both sides in the end plates (7a and 7b) of the housing (2), the locking elements or interventions when the flap (14) is closed. 5. Ventilation device according to one of claims 1 to 4,
characterized,
that the outer extruded profile (3) has a longitudinally extending, outwardly projecting and approximately trapezoidal profiled hollow rib (3a), in the downward-pointing profile wall (3d) of the air passage openings (8) are incorporated, preferably this profile wall (3d) downwards from one Drip nose (3e) is towered over (Fig. 2 and 3). 6. Ventilation device according to one of claims 1 to 5,
characterized,
that in the housing (2) an approximately G-shaped or C-shaped profile made of sound-absorbing material (17) is inserted, which on the one hand in its hollow rib (3a) of the outer extruded profile (3) wall (17a) at least one in the Has hollow rib (3a) opening (17b), while its slot-like longitudinal opening (17c) in the opposite wall (17d) is approximately at the level of the suspension (14a, 4h) of the flap (14) on the inner extruded profile (4) (Fig . 2). 7. Ventilation device according to one of claims 1 to 6,
characterized,
that the outer extruded profile (3) is positively connected at its longitudinal edges with the interposition of coupling profile bars (10, 11) with the upper and the lower, arranged extruded profile (5 and 6) (3f, 3g, 10b, 11b, 10a, 11a , 5g, 6g; Figs. 2 and 3). 8. Ventilation device according to one of claims 1 to 7,
characterized,
that all extruded profiles (3, 4, 5, 6) consist of thin-walled light metal, while the coupling profile bars (10, 11) are made of heat-insulating plastic. 9. Ventilation device according to one of claims 1 to 8,
characterized,
that the coupling members (10a, 10b or 11a, 11b and 3f, 3g and 5a and 6a) on the coupling profile bars (10 and 11) and the extruded profiles assigned to them (3, 5 and 6) from complementary, undercut profiled webs and grooves , for example those with an arcuate cross-section, exist (Fig. 2 and 3). 10. Ventilation device according to one of claims 1 to 9,
characterized,
that the upper and lower extruded profiles (5 and 6) each have two projecting lungs (5f, 5g or 6f, 6g) or ribs, each of which is at a distance from the main plane of the outer and inner extruded profiles (3 and 4) and between which an air guide chamber (19) formed from two molded parts (19b and 19c) symmetrical to a horizontal longitudinal center plane 19a-19a can be inserted, which has a tubular air passage (19d.) Towards the outer extruded profile (3) ) is limited, while it also contains through openings (19e and 19f) directed from the opposite side (FIGS. 3 and 4). 11. Ventilation device according to one of claims 1 to 10,
characterized,
that the longitudinal wall of the air guide chamber (19) opposite the air passage (19d) has a detachable connecting part (20) for the two molded parts (19b and 19c) and the support for a blower (24), in particular an axial fan, which can be inserted into the air guide chamber (19) Fan, forms (Fig. 3 and 4). 12. Ventilation device according to one of claims 1 to 5 and 7 to 11,
characterized,
that in the housing (2) an approximately C-shaped profile (47) of sound absorbing material is inserted, which connects laterally to an air guide chamber (49) provided in the housing (2), that the cross-sectionally C-shaped profile (47 ) is formed from sound absorbing material by a flat strip of material, which is inserted transversely into the housing (32) in the longitudinal direction with a double bend (47a, 47b) and is held therein under internal stress (FIG. 7),
and that only the ends of each C-profile (47) adjoining the air guide chamber (49) are covered on their opening side by relatively short laminate tongues (50a or 50b) (FIG. 8). 13. Ventilation device according to claim 12,
characterized,
that the length of the laminate tongues (50a, 50b) corresponds approximately to the clear cross-sectional height of the C-profile (47) between its parallel legs (47d, 47e). 14. Ventilation device according to one of claims 12 and 13,
characterized,
that the cross-sectionally C-shaped profile (47) made of sound-absorbing material is preceded on the outside by a multilayer wall (51), the cover layers (51a and 51b) of which are each made of relatively thin, sound-resistant material, e.g. hard plastic and / or sheet metal, while the intermediate layer ( 51c) is formed from relatively thick sound-absorbing material, for example cellular rubber, foam plastic or non-woven fabric. 15. Ventilation device according to one of claims 1 to 5 and 7 to 9,
characterized,
that the outer wall (63) of the housing (62) through three together Locking and / or clamping couplings (63e, 63f) connectable or connected extruded profile parts (63a, 63b and 63c), of which the central extruded profile part (63c) is interrupted one or more times to form the air passage openings (68) (Fig. 11). 16. Ventilation device according to claim 15,
characterized,
that the upper and the lower extruded profile part (63a and 63b) of the outer wall (63) each consist of light metal, while the central extruded profile part (63c) is made of plastic. 17. Ventilation device according to one of claims 15 and 16,
characterized,
that in the housing (62) a trapezoidal soundproofing duct (74) is formed, which on the one hand from the central extruded profile part (63c) and on the other hand through three mutually inclined insulating strips (75, 76, 77), e.g. made of foam plastic or foam rubber , is limited (Fig. 10). 18. Ventilation device according to one of claims 15 to 17,
characterized,
that the insulation strip (77) of the sound insulation duct (74) aligned parallel to the central extruded profile part (63c) is covered on the outside with a plate (80) made of weight material, for example sheet metal (FIG. 10). 19. Ventilation device according to one of claims 15 to 18,
characterized,
that the parallel to the central extruded profile part (63c) aligned insulation strip (77) is broken or divided in the longitudinal direction, the openings or interruptions rich compared to the air passage openings (68), which are kept free from the central extruded profile part (63c) of the outer wall (63), are arranged laterally offset to a gap. 20. Ventilation device according to one of claims 15 to 19,
characterized,
that the insulation strips (75 to 77) of the sound insulation duct (14) between the longitudinal webs and / or strips (78, 79) on the inside of the housing (62) are releasably held with clamping tension, the insulation strips covered with the plate (80) made of weight material (77), preferably additionally, is secured in position by detached spring clips (81) (82, 83; Fig. 10). 21. Ventilation device in particular according to one of claims 1 to 20,
marked by
a swivel drive and locking mechanism for the closure flap (112) which, behind the end plate (104) on the room side, which is provided with the air passage openings (109), in particular with getter perforations, for example the cuboid housing (102), can be pivoted about one of its longitudinal edges (113 ) is mounted and is in actuating engagement (128) with a control lever (116) pivotably mounted parallel to it, the control lever (116) being displaced relative to the pivot bearing (113) of the closure flap (112) both in the vertical and in the vertical direction arranged axis (123) is pivotally mounted (122) and has a curved cam curve (127) in the pivot plane, which has a varying distance relative to the bearing axis (123) over at least part of its length and on a projection (128) at the end of the Closing flap (112) attacks. 22. Ventilation device according to claim 21,
characterized,
that the adjusting lever (116) has another, transverse to its pivoting plane Directed stroke curve (129, 130, 126), with which a push rod (115) is in adjusting engagement (128), which is guided on the closure flap (112) at a distance parallel to its swivel bearing (113) and adjustable in length (114) and at least one Has locking piece (115²), which can be brought into and out of a holding connection with a housing-side locking engagement or abutment (131, 132). 23. Ventilation device according to one of claims 21 and 22,
characterized,
that the one lifting curve (127) is a curved slot or a curved groove in the side surface 126) of the actuating lever (116, 121), into which the projection (128) of the closure flap (112) protrudes sideways, while the second lifting curve (129 , 130, 126) is located in a recess (129) of the actuating lever (116, 121) formed in the same side surface (126), the recess (129) or the second lifting curve (129, 130, 126) preferably being both in the radial direction and in the circumferential direction at an angle to the first stroke curve (127) in the side surface (126) of the actuating lever (116), 121) (FIGS. 14 and 15). 24. Ventilation device according to one of claims 21 to 23,
characterized,
that the adjusting lever (116) is symmetrical to a plane intersecting its pivot axis (122, 123) at right angles, that is to say it is provided with two lifting curves (127 and 129, 130, 136) in both side surfaces (126) (FIG. 16) and advantageously is mounted (122, 123) on the inside of an end plate (107a or 107b) of a housing (102) and via the second stroke curve (129, 130,) located in its side surface (126) facing away from the end plate (107a or 107b). 126) is in contact with one end (115¹) of the (114) push rod (115) guided in the closure flap (112), while at least the other end (115²) of the push rod (115) on the opposite end plate (107b or 107a) of the housing (102) is assigned a tightening surface (132) as a latch engagement and abutment (131) (FIGS. 17 and 18), the tightening slope (132) expediently with the latch engagement or abutment (131) parallel to the plane of the end plate (107b or 107a), preferably continuously, adjustably or adjustably (137, 138, 139) is provided (FIGS. 17 and 18) and, if necessary, the adjusting or Adjusting member (137, 138, 139) for the bolt engagement or the abutment (131) consists of a screw spindle, which rotates but axially immovably in the end plate (107b or 107a) (140) and at its exposed end (139) is provided with a tool engagement, for example a transverse slot. 25. Ventilation device according to one of claims 21 to 24,
characterized,
that the push rod (115) consists of a wear-resistant plastic profile which is received in an undercut longitudinal groove (114) on the closure flap (112), and expediently the latch engagement or the abutment (131) is in an insert (133) which in a cutout (119) of the end plate (107b) or 107a), which is detachable but fixed in a form-fitting manner (134, 135, 123), the insert (133) advantageously being connected to a central plane parallel to the end plate (107b or 107a) is essentially symmetrically shaped and suitable for optional right and left installation, while the cutout (119) for receiving the adjusting lever (116, 121) in the end plates (107a and 107b) and the cutout (119) for receiving the insert piece (133) and if necessary the adjusting lever (116, 121) carries a toothed segment (142) at a point approximately diametrically opposite the actuating cam (120) protruding from the end plate (107a or 107b), mi t a drive pinion of a servomotor can be brought into engagement, while in the area between the toothed segment (142) and the actuating cam (120) is seated with a driver (143) with which an electrical switching and / or locking element for the drive motor of a blower can be brought into engagement. 26. Ventilation device for rooms, in particular according to one of claims 1 to 25,
with a fan that can be influenced by a speed controller and is operated by an electric motor,
characterized,
that the speed controller has two coils (247, 238) which are inductively coupled to one another exclusively by a common, axially displaceable core (246), of which the primary coil (247) via a capacitor (250) and possibly a resistor connected in parallel as a spark extinguisher ( 251) can be connected to the network by means of a switch contact (252),
while the secondary coil (248) with a diode (253), a capacitor (254), at least one resistor (255a, 255b, 255c) as well as a transistor (256) and a bridge rectifier (257) the speed control circuit for the electric motor of the blower (245) forms (Fig. 26). 27. Ventilation device according to claim 26,
characterized,
that the axially displaceable core (246) continuously penetrates the secondary coil (248) over its entire length, while it can be shifted relative to the primary coil (247) in its operative position between a maximum dimension (FIG. 21) and a minimum dimension (FIG. 22). 28. Ventilation device according to one of claims 26 and 27,
characterized,
that the diameter of the core (246) is about 15% smaller than the inside diameter of the coil (247 and 248). 29. Ventilation device according to one of claims 26 to 28,
characterized,
that the coils (247 and 248), for example with a length of 18 mm, an outer diameter of 8.5 mm and a clear diameter of 3.5 mm, have a resistance of 1200 ohms. 30. Device according to one of claims 1 to 5,
characterized,
that the core (46) of the two coils (47 and 48) consists of a welding wire alloy and, for example, the transistor (56) is a MOS FET transistor.

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