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EP0997092B1 - Steam generator of the injection type for small appliances - Google Patents

Steam generator of the injection type for small appliances Download PDF

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Publication number
EP0997092B1
EP0997092B1 EP99121229A EP99121229A EP0997092B1 EP 0997092 B1 EP0997092 B1 EP 0997092B1 EP 99121229 A EP99121229 A EP 99121229A EP 99121229 A EP99121229 A EP 99121229A EP 0997092 B1 EP0997092 B1 EP 0997092B1
Authority
EP
European Patent Office
Prior art keywords
steam
injection
wall
steam chamber
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99121229A
Other languages
German (de)
French (fr)
Other versions
EP0997092A1 (en
Inventor
Richard Dr.-Ing. Buchmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buchmann Richard Dr-Ing
Original Assignee
Buchmann Richard Dr-Ing
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Filing date
Publication date
Application filed by Buchmann Richard Dr-Ing filed Critical Buchmann Richard Dr-Ing
Publication of EP0997092A1 publication Critical patent/EP0997092A1/en
Application granted granted Critical
Publication of EP0997092B1 publication Critical patent/EP0997092B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/287—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in sprays or in films

Definitions

  • the invention relates to an injection steam generator for Small appliances.
  • Such known injection steam generators exist in detail from a thick-walled, heated and preferably cylindrical upright Steam chamber with one outside the Steam chamber arranged and perpendicular to the cylinder wall reciprocable water injector.
  • the injector moves to the steam chamber and closes an injection opening in its end position pressure-tight in the steam chamber wall. If now sprayed water through the nozzle into the heated steam chamber steam suddenly forms.
  • the steam flows through an always open outlet to the consumer. ever the cross section of this outlet opening is smaller, and so grows higher with a constant water injection quantity Steam pressure in the steam chamber during steam delivery.
  • the Steam generation ends when water injection stops.
  • the present invention is based on the object Condensation in the immediate vicinity of the injection steam generator, especially in a housing in which the injection steam generator is installed, as far as possible to avoid.
  • Fig. 1 is between an injection nozzle 3 and an outer one Steam chamber wall or steam chamber outer wall 1 a wider Silicone hose 4 with its longitudinal direction parallel to the cylinder axis a steam chamber 2 and with a smaller axis its oval cross-section parallel to the path of the injection nozzle 3 arranged.
  • the hose is on the nozzle side 4 from the nozzle 3 continuously and to the outside hose environment pierce in a vapor-tight manner. On the opposite side is it is punched and concentric with this opening to the injection opening attached to the steam chamber outer wall 1.
  • the hose 4 can with its two ends between an opening in the housing base 5 and one in the housing cover 6 are located.
  • a U-shaped arrangement of the is also possible Hose with two openings in the housing cover 6. In both Felling is during the steam generator's breaks the thermally induced draft required for cooling guaranteed in the hose 4.
  • the nozzle 3 moves into its injection position, it takes the outer tube wall with, the silicone tube 4 is consequently flattened out a little more. If the nozzle 3 moves back, it widens the hose 4 again. Residual steam that comes from the Injection opening flows out, is caught by the hose 4 and directed outside.
  • the cylindrical wall must pass through its outer wall opening Part of the nozzle 3 can slide back and forth in a vapor-tight manner.
  • FIG. 2 shows that the seal to the outside Hose or pipe environment also on the rigid part of the Can transfer nozzle mechanism.
  • 2a becomes this instead of the silicone hose, a one-piece molded silicone part suggested which one approach to the hose 7, which encloses the moving parts of the nozzle mechanism, is expanded.
  • this approach is as a stand alone Part, a pipe socket 8 closed on one side 8 educated.
  • This pipe socket 8 is closed with its End attached to the nozzle holder.
  • the silicone hose 4 or an inflexible Pipe can be coupled steam-tight.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Nozzles (AREA)

Abstract

An injection steam generator comprises a thick walled, heated cylindrical steam chamber, and a water injection nozzle which can move to and fro perpendicularly to the outside of the cylinder. When steam is demanded, the nozzle moves towards the cylinder and, in its end position, forms a pressure tight closure with an injection opening in the cylinder wall, after which water is injected into the heated steam generator. A silicone tube is located between the nozzle and the outer steam generator wall. The tube axis is perpendicular to the nozzle direction of movement, and it is fixed to the cylinder wall so it is concentric w.r.t. the cylinder injection opening.

Description

Die Erfindung betrifft einen Einspritzdampferzeuger für Kleingeräte.The invention relates to an injection steam generator for Small appliances.

Bekannte Dampferzeuger zum Erzeugen von Wasserdampf, die eine mit einer Dampfabgabeleitung verbundene Dampfkammer, einen in der Dampfkammer angeordneten, beheizbaren Wärmespeicher und eine mit der Wasserzufuhrleitung verbundene Einspritzeinrichtung zum Einspritzen von Wasser in die Dampfkammer umfassen, wobei die Einspritzeinrichtung gemäß dem Prinzip der DE 39 14 683 C2 eine relativ zur Dampfkammer in eine und aus einer Einspritzstellung bewegbare Düse enthält, haben deutliche Vorteile gegenüber Dampferzeugern mit Dampfkessel wie: Betrieb mit Leitungswasser ohne Verkalkungsprobleme, schnelle Aufheizzeit, Nachfüllen des Wassers während des Betriebs, keine Explosionsgefahr, kein Magnetventil im Dampfaustritt.Known steam generator for generating water vapor, the one steam chamber connected to a steam discharge line, one in arranged in the steam chamber, heatable heat storage and an injector connected to the water supply pipe for injecting water into the steam chamber, the injector according to the principle of DE 39 14 683 C2 one in and out relative to the steam chamber an injection position contains movable nozzle, have clear Advantages over steam generators with steam boilers such as: Operation with tap water without calcification problems, fast Heating time, refilling the water during operation, no risk of explosion, no solenoid valve in the steam outlet.

Solche bekannte Einspritzdampferzeuger bestehen im einzelnen aus einer dickwandigen, beheizten und vorzugsweise zylinderförmig-aufrechtstehenden Dampfkammer mit einer außerhalb der Dampfkammer angeordneten und senkrecht zur Zylindermantelwandung hin- und herfahrbaren Wasser-Einspritzdüse. Bei einer Dampfanforderung bewegt sich die Einspritzdüse auf die Dampfkammer zu und verschließt in ihrer Endposition eine Einspritzöffnung in der Dampfkammerwand druckdicht. Wenn jetzt durch die Düse Wasser in die erhitzte Dampfkammer gesprüht wird, bildet sich schlagartig Dampf. Der Dampf strömt durch eine stets geöffnete Austrittsöffnung zum Verbraucher. Je kleiner der Querschnitt dieser Austrittsöffnung ist, um so höher wächst bei zeitlich konstanter Wassereinspritzmenge der Dampfdruck in der Dampfkammer während der Dampfabgabe an. Die Dampferzeugung endet mit der Beendigung des Wassereinspritzens. Nach jeder Dampfanforderung wird durch das Zurückfahren der Düse in ihre Ruhestellung die Einspritzöffnung in der Dampfkammerwand geöffnet, was mit einem Austreten von Restdampf an der Einspritzöffnung verbunden sein kann. Befindet sich der Einspritzdampferzeuger in einem geschlossenen Gehäuse, kann es aufgrund dieses Restdampfes zu Kondenswasserbildung in dem Gehäuse kommen.Such known injection steam generators exist in detail from a thick-walled, heated and preferably cylindrical upright Steam chamber with one outside the Steam chamber arranged and perpendicular to the cylinder wall reciprocable water injector. At a When the steam request is made, the injector moves to the steam chamber and closes an injection opening in its end position pressure-tight in the steam chamber wall. If now sprayed water through the nozzle into the heated steam chamber steam suddenly forms. The steam flows through an always open outlet to the consumer. ever the cross section of this outlet opening is smaller, and so grows higher with a constant water injection quantity Steam pressure in the steam chamber during steam delivery. The Steam generation ends when water injection stops. After each steam request is made by driving back the nozzle in its rest position the injection opening in the Steam chamber wall opened, resulting in leakage of residual steam can be connected to the injection opening. is the injection steam generator in a closed housing, This residual vapor can lead to condensation come in the case.

Demnach liegt der vorliegenden Erfindung die Aufgabe zugrunde, Kondenswasserbildung in unmittelbarer Umgebung des Einspritzdampferzeugers, insbesondere in einem Gehäuse, in das der Einspritzdampferzeuger eingebaut ist,möglichst weitgehend zu vermeiden.Accordingly, the present invention is based on the object Condensation in the immediate vicinity of the injection steam generator, especially in a housing in which the injection steam generator is installed, as far as possible to avoid.

Diese Aufgabe wird durch die in Anspruch 1 angegebene Erfindung gelöst.This object is achieved by the invention specified in claim 1 solved.

Eine alternative Lösung ist in Anspruch 5 angegeben.An alternative solution is given in claim 5.

Eine sichere Methode, den Restdampf gezielt nach außen zu führen, wird im folgenden anhand einer Zeichnung mit drei Figuren beschrieben. Es zeigt:

Fig. 1
eine erste Ausführungsform des Einspritzdampferzeugers in Ruhestellung sowie in Einspritzstellung, und zwar jeweils unten im Längsschnitt und oben als Schnitt in Höhe der Düse;
Fig. 2a
eine zweite Ausführungsform des Einspritzdampferzeugers in Ruhestellung im Längsschnitt und
Fig. 2b
eine dritte Ausführungsform des Einspritzdampferzeugers in Ruhestellung im Längsschnitt.
A safe method of directing the residual steam to the outside is described below with the aid of a drawing with three figures. It shows:
Fig. 1
a first embodiment of the injection steam generator in the rest position and in the injection position, in each case below in the longitudinal section and above as a section at the height of the nozzle;
Fig. 2a
a second embodiment of the injection steam generator in the rest position in longitudinal section and
Fig. 2b
a third embodiment of the injection steam generator in the rest position in longitudinal section.

In Fig. 1 ist zwischen einer Einspritzdüse 3 und einer äußeren Dampfkammerwand bzw. Dampfkammeraußenwand 1 ein breiter Silikonschlauch 4 mit seiner Längsrichtung parallel zur Zylinderachse einer Dampfkammer 2 und mit einer kleineren Achse seines ovalen Querschnitts parallel zum Fahrweg der Einspritzdüse 3 angeordnet. Auf der Düsenseite ist der Schlauch 4 von der Düse 3 andauernd und zur äußeren Schlauchumgebung dampfdicht durchstoßen. Auf der gegenüberliegenden Seite ist er aufgestanzt und mit dieser Öffnung konzentrisch zur Einspritzöffnung an der Dampfkammeraußenwand 1 befestigt.In Fig. 1 is between an injection nozzle 3 and an outer one Steam chamber wall or steam chamber outer wall 1 a wider Silicone hose 4 with its longitudinal direction parallel to the cylinder axis a steam chamber 2 and with a smaller axis its oval cross-section parallel to the path of the injection nozzle 3 arranged. The hose is on the nozzle side 4 from the nozzle 3 continuously and to the outside hose environment pierce in a vapor-tight manner. On the opposite side is it is punched and concentric with this opening to the injection opening attached to the steam chamber outer wall 1.

Der Schlauch 4 kann sich mit seinen beiden Enden zwischen einer Öffnung im Gehäuseboden 5 und einer in der Gehäusedecke 6 befinden. Möglich ist auch eine U-förmige Anordnung des Schlauches mit zwei Öffnungen in der Gehäusedecke 6. In beiden Fällen ist während der Arbeitspausen des Dampferzeugers der zur Kühlung gewünschte, thermisch hervorgerufene Luftzug im Schlauch 4 gewährleistet.The hose 4 can with its two ends between an opening in the housing base 5 and one in the housing cover 6 are located. A U-shaped arrangement of the is also possible Hose with two openings in the housing cover 6. In both Felling is during the steam generator's breaks the thermally induced draft required for cooling guaranteed in the hose 4.

Fährt die Düse 3 in ihre Einspritzstellung, nimmt sie die äußere Schlauchwand mit, der Silikonschlauch 4 wird folglich noch etwas mehr flachgedrückt. Fährt die Düse 3 zurück, weitet sich der Schlauch 4 wieder. Restdampf, der dabei aus der Einspritzöffnung herausströmt, wird von dem Schlauch 4 aufgefangen und nach außen geleitet.If the nozzle 3 moves into its injection position, it takes the outer tube wall with, the silicone tube 4 is consequently flattened out a little more. If the nozzle 3 moves back, it widens the hose 4 again. Residual steam that comes from the Injection opening flows out, is caught by the hose 4 and directed outside.

Verwendet man statt des Silikonschlauchs 4 ein unflexibles Rohr, so muß durch dessen äußere Wandöffnung der zylindrische Teil der Düse 3 dampfdicht hin- und hergleiten können.If you use an inflexible instead of the silicone hose 4 Pipe, the cylindrical wall must pass through its outer wall opening Part of the nozzle 3 can slide back and forth in a vapor-tight manner.

Hierzu zeigt Fig. 2, daß man die Abdichtung zur äußeren Schlauch- oder Rohrumgebung auch auf den starren Teil des Düsenmechanismus übertragen kann. Gemäß Fig. 2a wird dazu statt des Silikonschlauches ein einteiliges Silikonformteil vorgeschlagen, welches gegenüber dem Schlauch um einen Ansatz 7, der die beweglichen Teile des Düsenmechanismus umschließt, erweitert ist. In Fig. 2b ist dieser Ansatz als ein eigenständiges Teil, ein einseitig geschlossener Rohrstutzen 8 ausgebildet. Dieser Rohrstutzen 8 ist mit seinem geschlossenen Ende an der Düsenhalterung befestigt. Am offenen Ende des Rohrstutzens 8 kann der Silikonschlauch 4 oder ein unflexibles Rohr dampfdicht angekoppelt werden.2 shows that the seal to the outside Hose or pipe environment also on the rigid part of the Can transfer nozzle mechanism. 2a becomes this instead of the silicone hose, a one-piece molded silicone part suggested which one approach to the hose 7, which encloses the moving parts of the nozzle mechanism, is expanded. In Fig. 2b this approach is as a stand alone Part, a pipe socket 8 closed on one side 8 educated. This pipe socket 8 is closed with its End attached to the nozzle holder. At the open end of the pipe socket 8, the silicone hose 4 or an inflexible Pipe can be coupled steam-tight.

Claims (6)

  1. Steam generator of the injection type, consisting of a thick-walled, heated and preferably cylindrical, upright steam chamber (2) with a water injection nozzle (3) which is arranged outside the steam chamber (2) and can be moved back and forth perpendicularly to the outer wall of the cylinder, which, when steam is required, moves towards the steam chamber (2) and, in its end position, fits in a pressure-tight way into an injection opening in the steam chamber wall (1), through which, in this position, water for steam generation is sprayed into the heated steam chamber (2), and which, when steam is no longer required, returns again to its starting position,
    characterised in that
    between the injection nozzle (3) and the outer wall (1) of the steam chamber is arranged a silicone hose (4) with its longitudinal direction perpendicular to the movement line of the injection nozzle (3), the said hose being permanently penetrated on the nozzle side by the injection nozzle (3) such that the nozzle forms a steam-tight seal against the encircling hose, and on the opposite side, being punched out and attached in a steam-tight way with the said opening concentric to the injection opening in the outer wall (1) of the steam chamber.
  2. Steam generator of the injection type according to Claim 1,
    characterised in that
    the silicone hose (4) arranged between the injection nozzle (3) and the outer wall of the steam chamber is positioned with its ends in areas where puffs of residual steam can be discharged without problems.
  3. Steam generator of the injection type according to Claims 1 and 2,
    characterised in that
    the lower end of the silicone hose (4) arranged between the injection nozzle (3) and the outer wall of the steam chamber opens into a water storage tank from which the injection water needed for generating steam is drawn.
  4. Steam generator of the injection type according to Claim 1,
    characterised in that
    the hose arranged between the injection nozzle (3) and the outer wall of the steam chamber consists of a heat-resistant and flexible material other than silicone rubber.
  5. Steam generator of the injection type, consisting of a thick-walled, heated and preferably cylindrical, upright steam chamber (2) with a water injection nozzle (3) which is arranged outside the steam chamber (2) and can be moved back and forth perpendicularly to the outer wall of the cylinder, which, when steam is required, moves towards the steam chamber (2) and, in its end position, fits in a pressure-tight way into an injection opening in the steam chamber wall (1), through which, in this position, water for steam generation is sprayed into the heated steam chamber (2), and which, when steam is no longer required, returns again to its starting position,
    characterised in that
    between the injection nozzle (3) and the outer wall of the steam chamber is arranged a rigid tube, through whose outer wall opening the cylindrical portion of the injection nozzle can slide in and out without leakage of steam.
  6. Steam generator of the injection type according to Claim 1,
    characterised in that
    the seal to the outer encircling hose or tube is positioned on the rigid part of the nozzle mechanism.
EP99121229A 1998-10-26 1999-10-23 Steam generator of the injection type for small appliances Expired - Lifetime EP0997092B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29819024U DE29819024U1 (en) 1998-10-26 1998-10-26 Injection steam generator for small appliances
DE29819024U 1998-10-26

Publications (2)

Publication Number Publication Date
EP0997092A1 EP0997092A1 (en) 2000-05-03
EP0997092B1 true EP0997092B1 (en) 2003-07-30

Family

ID=8064373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99121229A Expired - Lifetime EP0997092B1 (en) 1998-10-26 1999-10-23 Steam generator of the injection type for small appliances

Country Status (3)

Country Link
EP (1) EP0997092B1 (en)
AT (1) ATE245929T1 (en)
DE (2) DE29819024U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50005411D1 (en) 2000-04-22 2004-04-01 Eugster Frismag Ag Romanshorn Injection steam generator for small appliances

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582028A1 (en) * 1985-05-20 1986-11-21 Brenot Claude Ironing appliance with direct evaporation
DE3914683C2 (en) * 1989-05-03 1998-07-02 Richard Dipl Phys Dr Buchmann Small steam generator for operation with tap water
DE4312793C2 (en) * 1993-04-20 1995-04-27 Devilbiss Medizinische Produkt Device for providing warm humidified breathing gas

Also Published As

Publication number Publication date
DE29819024U1 (en) 1999-01-28
ATE245929T1 (en) 2003-08-15
EP0997092A1 (en) 2000-05-03
DE59906426D1 (en) 2003-09-04

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