EP0997092A1 - 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
EP0997092A1
EP0997092A1 EP99121229A EP99121229A EP0997092A1 EP 0997092 A1 EP0997092 A1 EP 0997092A1 EP 99121229 A EP99121229 A EP 99121229A EP 99121229 A EP99121229 A EP 99121229A EP 0997092 A1 EP0997092 A1 EP 0997092A1
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EP
European Patent Office
Prior art keywords
steam
injection
nozzle
steam chamber
hose
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.)
Granted
Application number
EP99121229A
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German (de)
French (fr)
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EP0997092B1 (en
Inventor
Richard Dr.-Ing. Buchmann
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Buchmann Richard Dr-Ing
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Individual
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    • 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. Each the cross section of this outlet opening is smaller, so higher grows 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 condenser 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 injector 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 out 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 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.
  • 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.

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 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-up 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 is requested, 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. Each the cross section of this outlet opening is smaller, so higher grows 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. Located the injection steam generator in a closed housing, This residual steam 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 Kondenswassererzeuger 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 condenser 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 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 injector 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 out 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 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 vapor-tight.

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)

Einspritzdampferzeuger, bestehend aus einer dickwandigen, beheizten und vorzugsweise zylinderförmig aufrechtstehenden Dampfkammer (2) mit einer außerhalb der Dampfkammer (2) angeordneten und senkrecht zur Zylindermantelwand hin- und herfahrbaren Wasser-Einspritzdüse (3), die sich bei einer Dampfanforderung auf die Dampfkammer (2) zu bewegt und in ihrer Endposition eine Einspritzöffnung in der Dampfkammerwand (1) druckdicht verschließt, durch die in dieser Position zur Dampferzeugung Wasser in die erhitzte Dampfkammer (2) gesprüht wird und die nach der Dampfanforderung wieder in ihre Ausgangsposition zurückfährt,
dadurch gekennzeichnet,
daß zwischen der Einspritzdüse (3) und der äußeren Dampfkammerwand (1) ein Silikonschlauch (4) mit seiner Längsrichtung senkrecht zur Bewegungslinie der Einspritzdüse (3) angeordnet wird, der auf der Düsenseite von der Einspritzdüse (3) andauernd und zur äußeren Schlauchumgebung dampfdicht durchstoßen wird und der auf der gegenüberliegenden Seite aufgestanzt und mit dieser Öffnung konzentrisch zur Einspritzöffnung an der äußeren Dampfkammerwand (1) dampfdicht befestigt wird.Injection steam generator, 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 cylinder jacket wall ) moves and in its end position closes an injection opening in the steam chamber wall (1) in a pressure-tight manner, through which water is sprayed into the heated steam chamber (2) in this position to generate steam and which returns to its starting position after the steam request,
characterized,
that between the injection nozzle (3) and the outer steam chamber wall (1) a silicone hose (4) is arranged with its longitudinal direction perpendicular to the line of movement of the injection nozzle (3), which is continuously penetrated on the nozzle side by the injection nozzle (3) and steam-tight to the outer hose environment is punched on the opposite side and is attached with this opening concentrically to the injection opening on the outer steam chamber wall (1) in a vapor-tight manner. Einspritzdampferzeuger nach Anspruch 1,
dadurch gekennzeichnet,
daß der Silikonschlauch (4), der zwischen Einspritzdüse (3) und der äußeren Dampfkammerwand angeordnet ist, mit seinen Enden in Bereiche geführt wird, in die Restdampfschwaden problemlos abgeführt werden können. Injection steam generator according to claim 1,
characterized,
that the ends of the silicone hose (4), which is arranged between the injection nozzle (3) and the outer steam chamber wall, are guided into areas into which residual steam can be easily removed. Einspritzdampferzeuger nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet,
daß der Silikonschlauch (4), der zwischen Einspritzdüse (3) und der äußeren Dampfkammerwand angeordnet ist, mit seinem unteren Ende in einen Vorratswassertank, aus dem das zur Dampferzeugung benötigte Einspritzwasser entnommen wird, mündet.Injection steam generator according to claims 1 and 2,
characterized,
that the silicone hose (4), which is arranged between the injection nozzle (3) and the outer steam chamber wall, opens with its lower end into a storage water tank from which the injection water required for steam generation is removed. Einspritzdampferzeuger nach Anspruch 1,
dadurch gekennzeichnet,
daß der Schlauch, der zwischen Einspritzdüse (3) und der äußeren Dampfkammerwand angeordnet ist, aus einem anderen hitzbeständigen und flexiblen Materials als Silikongummi besteht.Injection steam generator according to claim 1,
characterized,
that the hose, which is arranged between the injection nozzle (3) and the outer steam chamber wall, consists of a heat-resistant and flexible material other than silicone rubber. Einspritzdampferzeuger nach Anspruch 1,
dadurch gekennzeichnet,
daß statt des Schlauchs, der zwischen Einspritzdüse (3) und der äußeren Dampfkammerwand angeordnet ist, ein unflexibles Rohr verwendet wird, durch dessen äußere Wandöffnung der zylindrische Teil der Einspritzdüse dampfdicht hin- und hergleiten kann.Injection steam generator according to claim 1,
characterized,
that instead of the hose, which is arranged between the injection nozzle (3) and the outer steam chamber wall, an inflexible tube is used, through the outer wall opening of which the cylindrical part of the injection nozzle can slide back and forth in a vapor-tight manner. Einspritzdampferzeuger nach Anspruch 1,
dadurch gekennzeichnet,
daß die Abdichtung zur äußeren Schlauch- oder Rohrumgebung am starren Teil des Düsenmechanismus angeordnet ist.Injection steam generator according to claim 1,
characterized,
that the seal to the outer hose or pipe environment is arranged 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 true EP0997092A1 (en) 2000-05-03
EP0997092B1 EP0997092B1 (en) 2003-07-30

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Family Applications (1)

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EP99121229A Expired - Lifetime EP0997092B1 (en) 1998-10-26 1999-10-23 Steam generator of the injection type for small appliances

Country Status (3)

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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
ES2215514T3 (en) 2000-04-22 2004-10-16 Eugster/Frismag Ag INJECTION STEAM GENERATOR FOR SMALL APPLIANCES.

Citations (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
DE3914683A1 (en) * 1989-05-03 1990-11-08 Wmf Wuerttemberg Metallwaren MACHINE FOR PREPARING HOT DRINKS
DE4312793A1 (en) * 1993-04-20 1994-10-27 Devilbiss Medizinische Produkt Device for supplying warm, moist respiratory gas

Patent Citations (4)

* 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
DE3914683A1 (en) * 1989-05-03 1990-11-08 Wmf Wuerttemberg Metallwaren MACHINE FOR PREPARING HOT DRINKS
DE3914683C2 (en) 1989-05-03 1998-07-02 Richard Dipl Phys Dr Buchmann Small steam generator for operation with tap water
DE4312793A1 (en) * 1993-04-20 1994-10-27 Devilbiss Medizinische Produkt Device for supplying warm, moist respiratory gas

Also Published As

Publication number Publication date
DE29819024U1 (en) 1999-01-28
EP0997092B1 (en) 2003-07-30
DE59906426D1 (en) 2003-09-04
ATE245929T1 (en) 2003-08-15

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