EP2439454A1 - Gas burner for a cooking device - Google Patents

Abstract

The gas burner has burner main portion (10) comprising a burner head (2), a spark plug (6) and a mounting device (5) with a fixing device (53) for the spark plug. The mounting device is designed as one piece. The portion of the mounting device is fixed on the burner main portion, and the spark plug is biased opposite to the burner head. The fastening device for the spark plug is equipped with a mounting tab of the mounting device.

Description

The invention relates to a gas burner for a cooking appliance and a mounting device for mounting a gas burner in a cooking appliance, which comprises at least one fastening device for a spark plug of the gas burner.

In gas burners, in particular gas burners for cooking appliances, an ignition element, which is also referred to below as a spark plug, is used, through which the gas mixture that emerges from the burner is ignited. For this purpose, the spark plug is arranged adjacent to a burner head, from which the gas mixture emerges. Such a gas burner is for example in the EP1024328A2 described. The gas burner has a burner angle, which is designed as a nozzle carrier, with associated gas supply and an insertable from above into the burner angle burner head with burner cover, wherein the burner head is associated with a carrier for a thermocouple and a spark plug. The burner angle is in this case arranged on a mounting plate, which in turn can be fixed to the cover surface. The support for the thermocouple and the spark plug is attached to the burner bracket or to the mounting plate.

A critical point of a gas burner is the exact positioning of the spark plug to the burner head and the burner cap, as in a deviation from a defined position, the ignition may not work reliably, which is a security risk, since it may come to the exit of unburned gas mixture. In the known gas burner, the position of the tip of the spark plug to the burner head and burner cap is influenced by a number of tolerances. Due to the structure of the known gas burner, a tolerance chain is provided which includes the spark plug, the burner angle, the burner head, the mounting plate and the carrier for the spark plug. Since there may be tolerances in all these components, which are due to production or set by the temperature conditions, a reliable alignment of the spark plug is difficult to ensure with this configuration of the burner. Thus, the reliable operation of the burner is not guaranteed.

Object of the present invention is therefore to provide a gas burner and a mounting device in which a reliable operation, in particular a reliable positioning of at least the spark plug, can be ensured in a simple manner.

The invention is based on the finding that this object can be achieved by minimizing the factors influencing the adjustment and maintenance of a relative position of the spark plug to the burner head and the burner cap while continuing to design the gas burner.

According to a first aspect, the object is therefore achieved by a gas burner for a cooking appliance, which has a burner base body, which consists of at least one burner angle and burner head connected to the burner head, a spark plug and a mounting device with a fastening device for the spark plug. The gas burner is characterized in that the mounting device is configured in one piece, at least partially elastically deformable and the fastening device for the spark plug is at least a part of the mounting device, which is attached to the burner body and spans the spark plug against the burner head.

For the purposes of the present invention, a gas burner is a burner in which gas or a gas mixture is ignited by a spark. Preferably, the gas burner according to the invention is a gas burner, is received in the primary air below the cover surface of the cooking appliance. More preferably, the burner is an atmospherically sealed burner in which the burner head can not be removed by the user.

In the burner according to the invention, a gas mixture flows out of the gas outlet openings of the gas burner. The burner base body of the gas burner according to the present invention comprises a burner angle and a burner head connected to the burner angle. These components are detachably connected to each other. The burner angle is also called nozzle holder and represents the part of the burner body, which is connected to a gas supply line. The burner head represents the part of the burner base body which is at least partially over the covering surface of the cooking appliance, in particular a cooking hob extends upward and from which the gas mixture, flows from the gas outlet openings and is ignited.

As a spark plug, an ignition element is referred to, via which a spark can be delivered, which can ignite the gas mixture exiting gas outlet openings. The spark plug is a rod-shaped component, in the upper region of the spark is generated.

The distance between the point of the spark plug at which the ignition spark is generated, and an area which delimits the gas outlet openings upward is also referred to below as the ignition interval.

The mounting device according to the present invention serves to align and fix at least a part of the gas burner in a cooking appliance. The mounting device according to the invention comprises a fastening device for the spark plug. In this case, a fastening device is understood to be a device by means of which the spark plug is held on further components of the gas burner such that its position in the horizontal and preferably also in the vertical direction is determined by the fastening device.

As a mounting device, which is preferably a spring plate and hereinafter also referred to as spring plate, a component is understood that has at least partially resilient properties, in particular is elastically deformable. The mounting device is preferably made of metal, but may also be made of other materials that are elastically deformable and can withstand the temperature that occurs at the gas burner. For example, the mounting device may be made of a temperature-resistant plastic. At least part of the mounting device according to the invention forms the fastening device for the spark plug. In this case, preferably only a part of the fastening device is designed elastically deformable.

In the context of the present invention, an assembly device, which is made from a single semi-finished product, is designed as one-piece construction. In particular, the mounting device can be made of sheet metal and the individual areas are produced by bending. In addition, holes or slots can be punched in the sheet metal.

The mounting device according to the invention is attached to the burner base of the gas burner. Particularly preferably, the mounting device is direct attached to the burner body, that is, there are no separate connection elements are provided. According to the invention, the spark plug is tensioned against the burner head via at least part of the mounting device which is fastened to the burner base body. This means in the context of the invention that at least a portion of the spark plug is pressed against a portion of the burner head. The clamping force for tensioning the spark plug against the burner head represents a spring force and is supplied by the mounting device. The spark plug is preferably tensioned or pressed from below against a lower part of the burner head. The attack surface of the spark plug, over which it is clamped against the burner head, preferably represents a paragraph, which is provided in the length of the spark plug and extends radially outward. As a result, the contact area between the spark plug and the burner head to the end of the spark plug is spaced at which the spark is generated. The contact surface between the spark plug and the burner head can therefore lie in the region of the covering surface of the cooking appliance, in particular the cooktop, or below the covering surface. Thus, the contact surface is in an area that is not accessible from above with a sealed gas burner. Thus, inadvertent contact with the contact surface and, if appropriate, release of the contact between the burner head and the spark plug can be avoided.

The spark plug is preferably tensioned against a face or wall of the burner head which faces down and is in the lower region of the burner head. In particular, the spark plug is pressed against a surface which is located on the burner head, the absolute height relative to the covering surface is not the criterion here.

Directional indications, such as above and below and corresponding designations, such as top and bottom, unless otherwise stated, refer to the gas burner in the state in which it is installed in the cooking appliance.

By in the gas burner according to the invention, the mounting device is designed in one piece and the fastening device for the spark plug is at least a part of the mounting device, which is attached to the burner body and over which the spark plug is tightened against the burner head, the deviation of the ignition distance despite tolerances of individual components Gas burner can be minimized in a simple manner. As the mounting device to the burner body is fixed and at least a portion of the mounting device biases the spark plug against the burner head, the attachment of the spark plug to the burner body and their forcing against the burner head by a single component, namely the mounting device realized. Furthermore, it is advantageous that the fastening device for the spark plug with the mounting device is designed in one piece. As a result, the assembly of the gas burner is simplified. In addition, no further tolerance factors are introduced due to the resilient property of the fastening device, which could affect the firing distance.

With the present invention, therefore, only three components are included in the tolerance chain, which has an influence on the ignition interval. In particular, the accuracy of the ignition distance is determined only by the spark plug, the burner head and the burner cap, which closes the burner head up. This provides a very good positioning and thus improved ignition with a simple structure, especially for burners that receive the primary air under the cover of the cooking appliance.

The ignition of the gas burner according to the invention works reliably with all types of gas, such as natural gas, LPG and the like, and under all possible operating conditions, such as cold, hot, maximum flow, minimum flow, pot or no pot.

Another advantage of using a part of a one-piece, at least partially resiliently mounted mounting device as a fastening device of a spark plug to the burner body is that in contrast to a compression spring or other spring element by the fastening device to a plurality of components, such as the spark plug and a thermocouple, at the same time a spring force can be exercised.

According to a preferred embodiment, the mounting device is attached to the burner bracket. As attachment, a detachable connection between the burner angle and the mounting device is called. Particularly preferably, the attachment is realized by placing the mounting device on a surface of the burner angle and by acting on the mounting device spring force. In this type of attachment can additionally provide an anti-rotation be. This is realized for example by a locking lug on the mounting device and a recess on the burner angle or vice versa. By the mounting device to which the spark plug is attached, is attached to the burner bracket and not to the burner head, the burner head can be separated from the burner angle, that is, removed without the spark plug must also be removed. In addition, the burner angle is lower in relation to the burner head in the cooking appliance. Thus, there is a distance between the Bennerkopf, against which the spark plug is braced, and the burner angle, in which the fastening device of the mounting device can extend. The spring force applied by the fastening device can thus act perpendicular to the spark plug. Finally, the burner angle is the lowest part of the gas burner. Thus, when attaching the mounting device to the burner angle also geometries can be realized, which extend downwards without further components of the gas burner hinder this.

According to one embodiment, the fastening device for the spark plug is a fastening strap of the mounting device. In the sense of the present invention, a fastening strap is understood to be a planar partial region of the mounting device, in which a fixing strap is connected to a base of the mounting device via at least one inclined connecting region. At least one fixing opening for receiving and holding the spark plug is inserted in the fixing lug. Preferably, the fastening tab is designed such that the fixing tab represents a flat partial area, which is offset vertically to the base of the mounting device. As the base area, the partial surface of the mounting device is referred to, via which the mounting device rests against the burner angle. The connection region is preferably designed to be resilient. As a result, the fixing tab can lie horizontally and be pressed in the vertical direction by the spring force which is applied through the connection area. The use of a fastening tab thus has the advantage that a vertical pressing of the spark plug to the burner head can be realized.

In addition, by using a fastening tab, the structure of the fastening device is simplified. In particular, it does not require a separate To provide housing for the spark plug. Furthermore, the attachment of other components, such as a thermocouple, can be realized on the mounting strap by the flat structure of the fastening device. This further simplifies the construction of the gas burner and its assembly.

Finally, in the embodiment in which the fastening device for the spark plug constitutes a fastening tab, it is advantageous that further regions which serve other purposes can be provided on the base surface of the mounting device. In particular, further tabs may be provided which serve, for example, a fixation of the mounting device against other parts of the gas burner or the cooking appliance. Thus, the mounting device can serve different purposes.

The mounting device has, according to a preferred embodiment, at least one spring strip for support against the underside of a covering surface of the cooking appliance. A spring strip is understood to be a partial region of the mounting device which is at least partially resilient, ie elastically deformable. Particularly preferably, the spring strip has a connection region and a support region. The connection area here connects the support area with the base of the mounting device. By providing at least one spring strip, it is possible to clamp the gas burner against the covering surface of the cooking appliance, in particular the cooktop. As a covering surface is referred to in the context of the invention, a surface or a sheet through which the gas burner is passed and which covers the lower parts of the gas burner, in particular the burner angle. By the spring strip is formed on the mounting device, on which the fastening device for the spark plug is formed, the mounting device is a multi-functional element and the construction and installation of the gas burner are further simplified. But by the spring strips are provided for support separately to the fastening device for the spark plug at the base of the mounting device, a force acting on the fastening device does not act on the spring strips so that the forces of attachment of the spark plug and the forces of the support of the gas burner against the cover surface in Essentially decoupled from each other. In particular, counter-forces that play by the fastening device for the Spark plug are exerted no role in the sealing behavior, which will be described in more detail later.

The burner angle is inventively connected to the burner head. By providing support of the burner angle against the underside of the cover surface by the spring strips, the burner head connected to the burner angle is reliably drawn to the top of the cover surface. This brings advantages in particular with regard to the tightness. In order to prevent the ingress of contaminants into the interior of the cooking appliance, a seal, for example in the form of a sealing ring, is generally inserted between the underside of the burner head and the top of the covering surface. By supporting the burner angle against the underside of the cover surface and thereby effected pulling down the burner head against the seal on the cover surface, the tightness can be ensured.

According to a preferred embodiment, the fastening device for the spark plug comprises at least one fixing tab and at least one spring bar. The spring bar in this case forms the above-mentioned connection region between the fixing lug and the base of the mounting device. By this connecting portion is formed only by webs, the flexibility of the connecting portion and thus the spring force that can be applied by the fastening device can be increased. In addition, the width of the webs is less than the width of the fixing tab. Thus, a spatial geometry can be created in which the webs are at least partially in a vertical projection in the surface of the fixing tab and yet attachment of the spark plug to the fixing tab is possible. Particularly preferably, the spring webs connect to the side edges of the fixing lug. Between the spring bars and the base, a connecting wall or wall may be provided, which is perpendicular to the base of the mounting device, for example. As a result, the relative position of the fixing tab to the base in the vertical direction can be set or specified in accordance with the given conditions.

In the fixing lug of the mounting device, a fixing opening for fixing the spark plug is preferably provided. By providing a fixing opening, the spark plug can be fixed in the vertical direction. For this purpose, a shoulder or a groove is provided on the spark plug, with the edge of the fixing hole in the fixing tab can interact. The shoulder on the spark plug is preferably formed by a sleeve-shaped widening of the spark plug over part of its length. In this broadening a circumferential groove can be provided. According to the invention, a further fixing opening adjacent to the fixing opening for the spark plug can also be introduced on the fixing lug. This further fixing opening serves to fix a thermocouple of the gas burner.

The burner angle is preferably screwed to the burner head. Particularly preferably, the screw connection is achieved by means of screws which extend from the top side of the burner head through the latter into the burner angle. By this connection, a relative movement of the burner head to the burner angle is reliably prevented. Nevertheless, in this type of attachment, the burner head can be removed from above if necessary, without having to dismantle further components of the burner.

According to the present invention, the spark plug is tightened against the burner head. The position of the passage opening in the burner head for the spark plug or other mounting of the spark plug on or in the burner head is not limited to a specific position in the present invention. The spark plug can be guided, for example, through a passage opening integrated in the burner head. According to a preferred embodiment, however, the burner head has a supporting projection. The support projection extends radially from the burner head over part of the circumference of the burner head. The support projection is provided at the lower portion of the part of the burner head, which is in the installed state over the cover surface. At least one passage opening for the spark plug is provided in the support projection. The diameter of the passage opening corresponds to the diameter of the spark plug in its upper region. However, the diameter of the passage opening is smaller than the diameter of the spark plug in the lower region, in which, for example, a sleeve-shaped widening is provided. Thus, the spark plug can be guided from below through the passage opening or the burner head can be guided over a mounted spark plug. However, once the underside of the support projection comes into contact with the top of the extended area of the spark plug, further vertical upward movement of the spark plug is no longer possible. In this position, in the gas burner according to the invention, the spark plug by the fastening device held. The spark plug is therefore clamped in this embodiment against the support projection of the burner head.

Through the passage openings in the support projection of the burner head, the horizontal movement of the spark plug is already limited. According to a preferred embodiment, however, at least one downwardly projecting support wall is provided on the underside of the support projection. The support wall is provided in the region of the passage opening. The support wall may have a sleeve shape or a partial sleeve shape. By this support wall, the fixation of the spark plug is further improved and in particular a pivoting of the spark plug can be avoided. In addition, the provision of a downwardly extending support wall has the advantage that the point of contact between the spark plug and the burner head is displaced downwards. Namely, in this embodiment, the upper side of an extended area of the spark plug is preferably abutted against the underside of the support wall. Thus, the contact point or the contact surface between the spark plug and the burner head in the mounted state below the cover surface.

Preferably, a vertically extending groove is provided on the burner head adjacent to the passage opening for the spark plug in the jacket wall of the burner head. Through this groove, the spark plug can be guided in a position by the support projection, which is closer to the center axis of the burner head than the further circumference of the burner head. This has the advantage that the burner cap, which closes the burner head upwards, can have a diameter which corresponds to the diameter of the burner head, that is to say the burner cap does not have to protrude beyond the circumference of the burner head in order to form the firing interval.

According to a further aspect, the present invention relates to a mounting device for mounting a gas burner in a cooking appliance, which comprises at least one fastening device for a spark plug of the gas burner. The mounting device is characterized in that the mounting device is designed in one piece, at least partially elastically deformable and the fastening device for the spark plug is at least a part of the mounting device, wherein the mounting device comprises a passage opening for receiving a portion of a burner base body of the gas burner.

The mounting device is preferably a spring plate. The advantage of a spring plate is that the fastening device can be created on the mounting device in a simple manner by bending. In addition, a sheet can be easily processed in other ways, so that, for example, openings and recesses can be introduced by punching. The production of the mounting device is thus easy.

Preferably, the mounting device has the fastening device for the spark plug in the form of a fastening tab, three spring tabs for support against a covering surface of the cooking appliance and a fixing lug for the rotationally secure fixing of the mounting device to the burner base body. The fastening tab, the spring tabs and the fixing lug are in this case provided on a base surface of the mounting device, that is, separated from each other by the base. The passage opening for receiving a part of the burner base body, in particular a part of the burner angle, is also provided in the base area. By thus the mounting device can be placed on a shoulder of the burner angle and can be supported by the spring tabs against the cover surface, further fastening means, such as clamping rings, are not required. Thus, the assembly and disassembly of the burner and its maintenance is simplified.

Advantages and features that are described with respect to the gas burner according to the invention apply - as far as applicable - accordingly for the mounting device according to the invention and vice versa.

Figur 1:

eine schematische Seitenansicht einer Ausführungsform des erfindungsgemäßen Gasbrenners im eingebauten Zustand;

Figur 2:

eine weitere schematische Seitenansicht des Gasbrenners nach Figur 1 im ausgebauten Zustand;

Figur 3:

eine schematische Explosionsansicht der Ausführungsform des Gasbrenners nach Figur 1;

Figur 4:

eine schematische Schnittansicht der Ausführungsform des Gasbrenners nach Figur 1;

Figur 5:

eine schematische Seitenansicht des unteren Teils der Ausführungsform des Gasbrenners nach Figur 1;

Figur 6:

eine schematische Perspektivansicht des unteren Teil der Ausführungsform des Gasbrenners nach Figur 1;

Figur 7:

eine schematische Perspektivansicht der Montagevorrichtung der ersten Ausführungsform des Gasbrenners nach Figur 1;

Figur 8:

eine schematische Perspektivansicht einer zweiten Ausführungsform des erfindungsgemäßen Gasbrenners; und

Figur 9:

eine schematische Perspektivansicht der Montagevorrichtung der zweiten Ausführungsform des Gasbrenners nach Figur 8.

The invention will be explained again below with reference to the accompanying drawings. Hereby show:

FIG. 1:

a schematic side view of an embodiment of the gas burner according to the invention in the installed state;

FIG. 2:

another schematic side view of the gas burner after FIG. 1 in disassembled condition;

FIG. 3:

a schematic exploded view of the embodiment of the gas burner according to FIG. 1 ;

FIG. 4:

a schematic sectional view of the embodiment of the gas burner according to FIG. 1 ;

FIG. 5:

a schematic side view of the lower part of the embodiment of the gas burner according to FIG. 1 ;

FIG. 6:

a schematic perspective view of the lower part of the embodiment of the gas burner according to FIG. 1 ;

FIG. 7:

a schematic perspective view of the mounting device of the first embodiment of the gas burner according to FIG. 1 ;

FIG. 8:

a schematic perspective view of a second embodiment of the gas burner according to the invention; and

FIG. 9:

a schematic perspective view of the mounting device of the second embodiment of the gas burner according to FIG. 8 ,

In FIG. 1 an embodiment of the gas burner 1 according to the invention is shown. The gas burner 1 consists of a burner angle 4, which is designed as a nozzle holder. In the burner angle 4, a burner head 2 is used, which together with the burner angle 4 forms the base body 10 of the gas burner 1. At the upper end of the burner head 2 gas outlet openings 21 are provided over the circumference of the burner head 2. At the top, the burner head 2 is closed by a burner cover 3 placed thereon. The gas burner 1 is in the FIG. 1 shown in a state in which it is installed in a cooking appliance (not shown), in particular a cooktop. For the passage of the burner head 2 is in the cover 9 of the cooking appliance, an opening 91 (see FIG. 4 ) brought in. The burner head 2 rests on a shoulder 26 on its underside on the upper side of the covering surface 9 at the edge of the opening 91 provided therein. The burner head 2 has a rotationally symmetrical body. On a part of the circumference, a support projection 23 is provided in the region of the shoulder 26, which extends from the periphery of the burner head 2 to the outside and is integrally formed with the burner head 2. Through the support projection 23, the spark plug 6 and a thermocouple 7 are guided and held on the support projection 23.

For holding the spark plug 6 and the thermocouple 7 to the burner head 2, in particular for bracing these elements against the burner head 2 is below the cover 9 a mounting device 5 provided in the form of a spring plate.

The spring plate 5 has in the illustrated embodiment, three spring strips 52 (in FIG. 1 only two of the three spring strips 52 are visible) which extend radially outwards from a base 51 and are inclined upwards. Between the two in the FIG. 1 visible spring strip 52 extends a flange 55 which is directed upward. Furthermore, the spring plate 5 has a fastening tab 53, on which the spark plug 6 and the thermocouple 7 are attached. For axial retention of the spark plug 6 and the thermocouple 7, a fixing element 8 in the form of a form spring, which is also referred to as a clip, is respectively provided on the spark plug 6 and the thermocouple 7. Over a portion of the length of the spark plug 6 and the thermocouple 7, a respective fastening sleeve 61, 71 is provided, which are each formed integrally with the spark plug 6 and the thermocouple 7 and represents a radial broadening of the elements. At the bottom of the mounting sleeves 61, 71 connect the lines 63 and 73 for the electrical connection of the spark plug 6 and the thermocouple 7 at. In the fastening sleeves 61, 71 circumferential locking grooves 62, 72 are introduced over the circumference thereof. In this locking grooves 62, 72 engage the fixing elements 8 a. Due to the spring force of the spring plate 5 and in particular the fastening tab 53, the spark plug 6 and the thermocouple 7 are pressed up against the underside of the support projection 23 on the burner head 2.

The spring plate 5 is fixed to the burner bracket 4. In particular, the spring plate 5 is placed on a peripheral support flange 42 at the upper portion of the burner angle 4. By a fixing lug 54, which extends from the spring plate 5 down from the spring plate 5 is held against rotation at the burner angle 4. For this purpose, a corresponding recess is provided in the support flange 42 into which the fixing lug 54 engages.

In the FIG. 2 the gas burner 1 is shown without the cover 9. In the side view shown, the parallel arrangement of the spark plug 6 and the thermocouple 7 can be seen. In addition, it can be seen from this figure that 2 support walls 231 is provided on the underside of the support projection 23 of the burner head. The support walls 231 have substantially sleeve shapes that are parallel to each other vertically and interconnected. In each of the two pods is provided over a part of the circumference a recess in the jacket wall. Through the sleeve-shaped spaces formed by these support walls 231, the spark plug 6 and the thermocouple 7 are guided. The underside of the support walls 231 in this case bears against the upper side of the fastening sleeve 61 of the spark plug 6 and at the top of a shoulder in the fastening sleeve 71 of the thermocouple 7.

In FIG. 3 the gas burner is shown in exploded view, with reference to which the assembly of the gas burner 1 is explained, wherein the order of the steps of assembly may differ from the now described. The burner angle 4, which consists of a gas connection and arranged angled annular upper part is connected in the cooking appliance (not shown) to a gas supply line.

A spark plug 6 and a thermocouple 7 are attached to the fastening tab 53 of the spring plate 5. The fastening tab 53 has a fixing tab 532, in which a fixing opening 530 for the thermocouple 7 and a fixing opening 531 for the spark plug 6 are introduced. The fixing tab 532 is substantially horizontal and is connected via two lateral spring webs 533 with a wall 56 which, like the flanges 55 extends from the base 51 of the spring plate 5 upwards. The spring webs 533 are connected to the upper edge of the wall 56 and extend downwardly therefrom. The ends of the spring bars 533 facing away from the wall 56 lie at the outer end of the fixing tab 532, which is also referred to as the front of the fixing tab 532. The back of the Fixierlasche 532, that is, the base 51 facing side of the Fixierlasche 532 is thus free.

The fixing holes 530 and 531 are inserted into the fixing tab 532 such that they extend to a part of their circumference up to the front of the fixing tab 532. Thus, a gap extends from each of the fixing openings 530, 531 to the front edge of the fixing lug 532. This front edge faces away from the base 51 of the spring plate 5 and is thus accessible from the outside. Through the slots, the spark plug 6 and the thermocouple 7 are inserted into the fixing holes 530 and 531. After insertion, the fastening sleeves 61, 71 lie with their latching groove 62, 72 in the fixing openings 530, 531. This is for example in FIG. 4 shown. In this case, the upper edges of the locking grooves 62, 72 lie on the top of the Fastening tab 532 on. The height of the locking groove 62, 72 is greater than the material thickness of the fastening tab 532. Below the fastening tab 532 is therefore on the mounting sleeves 61, 71 each have a fixing 8 in the form of a clip, that is, a small v-shaped bent spring plate in the locking grooves 62, 72 introduced. These surround a part of the circumference of the latching groove 62, 72 and clamp the spark plug 6 and the thermocouple 7 against the fastening tab 532. In addition, the spark plug 6 and the thermocouple 7 are thereby secured against pivoting.

The spring plate 5 with the attached spark plug 6 and the attached thermocouple 7 is placed on the burner angle 4. Alternatively, however, the spark plug 6 and the thermocouple 7 can also be fixed to the burner bracket 4 after the spring plate 5 has been attached. The spring plate 5 is placed on the support flange 42 at the annular upper part of the burner angle 4. In this case, the fixing lug 54 with a corresponding recess (see FIG. 5 ) joined to the support flange 42. Further attachment of the spring plate 5 to the burner angle 4 is not required. This pre-assembled condition is in FIG. 6 shown.

On the spring plate 5, the cover 9, as in FIG. 5 shown, hung up. The vertical distance between the support flange 42 and the underside of the cover 9 is less than the vertical extent of the spring strips 52 of the spring plate 5 before the application of the cover 9, that is in the relaxed state. Due to the smaller distance of the cover surface 9 to the support flange 42 and thus to the resting on this base 51 of the spring plate 5, the spring plate 5 is stretched over the spring strip 52. On the free ends of the spring strips 52 in this case acts a vertical force from above and on the underside of the base 51 of the spring plate 5, a corresponding opposite vertical force from below. That is, the burner angle 4 is pressed by the spring plate 5 down.

On the edge of the opening or recess 91 (see FIG. 4 ) in the cover 9, a sealing ring 25 is placed, which corresponds to the shape of the recess 91. The recess 91 therefore has a shape which is substantially circular and has a bulge only in the area in which the spark plug 6 and the thermocouple 6 are passed through the Abdeckfläche9. The bulge corresponds to the Shape of the support projection 23. On the sealing ring 5, the burner head 2 is applied. This is aligned so that the support projection 23 is aligned with the bulge in the opening of the Abdeckfläche9. The burner head 2 has, in the region in which it projects beyond the cover surface 9 upwards, a larger diameter than the opening or recess 91 in the cover surface 9. Between the burner head 2 of the shoulder 26 and the edge of the recess 91 is a Gap. In the bottom of the shoulder 26, a groove 27 is introduced, in which the sealing ring 25 is located after the application of the burner head 2. Alternatively, the sealing ring 25 can also be placed in the groove 27 before the burner head 2 is guided through the recess 91. The height of the sealing ring is greater than the depth of the groove in both alternatives. In this way, a direct contact between the burner head 2 and the cover 9 can be prevented. Such a contact is to be avoided since, for example, in the case of a covering surface made of glass-ceramic, the covering surface may be damaged. In the case of a covering surface, which consists for example of stainless steel, such contact would lead to a discoloration of the surface.

The burner head 2 has an injector 22 on its underside. This injector 22 is as in FIG. 4 shown in the upper part of the burner angle 4 recorded. The underside of the burner head 2 is located on the top burner angle 4. Upon insertion of the burner head 2, the spark plug 6 fixed to the mounting bracket 532 and the thermocouple 7 also fixed there are guided through the spaces provided by the support walls 231 on the underside of the support projection 23. In the state in which the guide tube 22 is completely received in the burner angle 4, the underside of the support walls 231 on the top of the mounting sleeve 61 of the spark plug 6 and at the top of a shoulder of the mounting sleeve 71 of the thermocouple 7 (see FIG. 2 ).

The vertical distance between the fixing tab 532 of the fastening tab 53 and the underside of the support walls 231 is in the in FIG. 4 Since the spark plug 6 are fixed to the Fixerlasche 532 of the fastening tab 53 of the spring plate 5, which is resiliently connected to the base 51 via the spring webs 533 the spring plate 5 is held, the spark plug 6 is thus against the support wall 231 and thus against pressed the bottom of the burner head 2. As a result, the firing interval between the tip of the spark plug 6 and the burner cap 3 is fixed, without this being affected by manufacturing tolerances, such as the burner angle 4.

As it turned out FIG. 3 results are in the upper annular part of the burner angle 4 in the upper side two internal thread 43 is inserted diametrically offset from one another. About this internal thread 43 and corresponding holes (not shown) in the burner head 2, the burner head 2 is screwed by screws 24 with the burner angle 4 firmly. Subsequently, the burner cover 3 is placed.

In the FIGS. 8 and 9 a further embodiment of the gas burner 1 according to the invention is shown. This has substantially the same structure as that with reference to the FIGS. 1 to 7 described first embodiment. Only the shape of the fastening tab 53 and the spring strip 52 and the orientation of the flanges 55 of the spring plate 5 differ from the first embodiment. The other components of the gas burner 1 and their function corresponding to those of the first embodiment and are therefore not explained again and are provided with the same reference numerals.

In the second embodiment, three spring strips 52 are also provided on the spring plate 5, which extend radially and are inclined upwards. However, in the illustrated embodiment, the inclination angle is smaller than in the first embodiment. Since the base 51 of the spring plate 5 thus has a smaller vertical distance to the free ends of the spring strips 2, in this embodiment, the flanges 55 are directed to reinforce the spring plate 5 from the base 51 from downwards. Also, the wall 56, which is provided in place of the third flange 55 between the spring strips 52, extends from the base 51 from downwards. At the lower end of the wall 56, an outwardly connecting wall 57 connects. In the plane of the connecting wall 57 close to the end of the connecting wall 57, which faces away from the wall 56, spring webs 533 at. These run in a Z-shape and thus end in a plane which is offset upwards to the plane of the connecting wall 57 and is preferably parallel to this plane. In this upper level, the fixing tab 532 is connected to the spring webs 533. In the fixing tab 532 are fixing holes 530 and 531 for the spark plug 6 and the thermocouple 7 introduced. The shape and arrangement of these fixing holes 530, 531 are the same as those of the fixing holes 530, 531 of the first embodiment. Also in the second embodiment, a fixing lug 54 is provided on the spring plate 5, which protrudes from the base 51 from down and engages in a recess of the support flange 42 at the burner angle 4.

The present invention is not limited to the illustrated embodiments. Rather, other geometries of a spring plate can be used. For example, more than three spring strips may be provided. The design of the fastening strap may differ from the illustrated embodiments. However, this always a one-piece component is used, by which the spring force is transmitted from the burner body to the spark plug and this is resiliently pressed against the burner head.

The present invention has a number of advantages. In particular, with the present invention, the flame detection and flame ignition of a gas burner can be improved. In addition, the burner head can be easily removed by loosening the screws without further components are specially to be solved. The spark plug and the thermocouple remain horizontally fixed to the spring plate with the help of the small clip. In addition, the positioning accuracy of the spark plug is improved, resulting in a robust, reliable ignition. The positioning accuracy of the thermocouple is also improved, thereby reliably ensuring flame detection. In addition, the assembly of the burner due to the fact that except the mounting device in the form of a spring plate, if necessary, a fixing element in the form of a clip is required. Finally, the design costs for different designs are low.

LIST OF REFERENCE NUMBERS

1 gas burner 52 spring strips 10 Brenner base 53 mounting tab 2 burner head 530 Fixing opening (thermocouple) 21 Gas outlet openings 531 Fixing hole (spark plug) 22 injector 532 fixing flap 23 supporting projection 533 spring bar 230 Port 54 fixing lug 231 retaining wall 55 flange 24 screw 56 wall 25 seal 57 connecting wall 26 shoulder 6 spark plug 27 groove 61 mounting sleeve 3 burner caps 62 locking groove 4 torch angle 63 management 41 receiving opening 7 thermocouple 42 support flange 71 mounting sleeve 43 inner thread 72 locking groove 5 Mounting device (spring plate) 73 management 8th Fixing element (form spring) 51 Floor space 9 coverage area 510 Port 91 recess

Claims (10)

Gas burner for a cooking appliance, which comprises a burner base body (10) which comprises at least one burner angle (4) and a burner head (2) connected to the burner angle (4), a spark plug (6) and a mounting device (5) with a fastening device ( 53) for the spark plug (6), characterized in that the mounting device (5) is designed in one piece, at least partially elastically deformable and the fastening device (53) for the spark plug (6) is at least a part of the mounting device (5), which is attached to the burner base body (10) and the spark plug (6) clamped against the burner head (2). Gas burner according to claim 1, characterized in that the mounting device (5) is attached to the burner bracket (4). Gas burner according to one of claims 1 or 2, characterized in that the fastening device (53) for the spark plug (6) is a fastening tab (53) of the mounting device (5). Gas burner according to one of claims 1 to 3, characterized in that the mounting device (5) has at least one spring strip (52) for support against the underside of a cover surface (9) of the cooking appliance. Gas burner according to one of claims 1 to 4, characterized in that the fastening device (53) comprises at least one fixing tab (532) and at least one spring bar (533). Gas burner according to Claim 5, characterized in that a fixing opening (531) for fixing the spark plug (6) is provided in the fixing lug (532). Gas burner according to one of claims 1 to 7, characterized in that the burner head (2) has a radial support projection (23) with at least one passage opening (230) for the spark plug (6). Gas burner according to claim 7, characterized in that on the underside of the support projection (23) in the region of the passage opening (230) at least one downwardly projecting support wall (231) is provided. Mounting device for mounting a gas burner (1) in a cooking appliance, comprising at least one fastening device (53) for a spark plug (6) of the gas burner (1), characterized in that the mounting device (5) is designed in one piece, at least partially elastically deformable and the fastening device (53) for the spark plug (6) represents at least part of the mounting device (5), wherein the mounting device (5) comprises a passage opening (510) for receiving a part of a burner base body (10) of the gas burner (1). Mounting device according to claim 9, characterized in that the mounting device (5) the fastening device (53) for the spark plug (6) in the form of a fastening tab (53), three spring tabs (52) for support against a covering surface (9) of the cooking appliance and a fixing lug (54) for the rotationally secure fixing of the mounting device (5) on the burner base body (10).

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