DE2403297A1 - Filter coffee maker with riser pipe - has electric diaphragm pressure switch and non-return valve for hot water - Google Patents

Filter coffee maker with riser pipe - has electric diaphragm pressure switch and non-return valve for hot water

Info

Publication number
DE2403297A1
DE2403297A1 DE2403297A DE2403297A DE2403297A1 DE 2403297 A1 DE2403297 A1 DE 2403297A1 DE 2403297 A DE2403297 A DE 2403297A DE 2403297 A DE2403297 A DE 2403297A DE 2403297 A1 DE2403297 A1 DE 2403297A1
Authority
DE
Germany
Prior art keywords
pressure
pressure switch
water
return valve
coffee maker
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.)
Pending
Application number
DE2403297A
Other languages
German (de)
Inventor
Erhard Arbter
Helmut Firnkorn
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.)
WIGO WIDMANN SOEHNE GOTTLOB
Original Assignee
WIGO WIDMANN SOEHNE GOTTLOB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WIGO WIDMANN SOEHNE GOTTLOB filed Critical WIGO WIDMANN SOEHNE GOTTLOB
Priority to DE2403297A priority Critical patent/DE2403297A1/en
Publication of DE2403297A1 publication Critical patent/DE2403297A1/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/54—Water boiling vessels in beverage making machines
    • A47J31/542—Continuous-flow heaters
    • A47J31/545—Control or safety devices

Abstract

The coffee maker comprises a flesh water container and water overflow with a through-flow heater and riser wherein a water-pressure controlled pressure box in the diaphragm pressure switch is connected in to the connecting pipe between the cold water container and the heater. A non-return valve is provided in the drainage pipe of the pressure box wherein a ball mounted in a chamber in the drainage pipe closes the recoil path to the diaphragm box as soon as there is any pressure exerted in this direction which is caused by the water boiling in the heater.

Description

Elektrischer Membrandruckschalter Die Ausbildung bezieht sich auf einen Membrandruckschalter mit einer vom Wasserdruck gesteuerten Druckdose für eine Kaffeemaschine mit einem Kaltwasserbehälter, von dem das Wasser durch eine Verbindungsleitung in einen Durchlauferhitzer gelangt, wobei die vom Wasserdruck gesteuerte Druckdose des Membrandruckschalters in die Verbindungsleitung eingeschaltet ist.Electrical membrane pressure switch The training relates to a membrane pressure switch with a pressure cell controlled by the water pressure for a Coffee machine with a cold water tank, from which the water is fed through a connecting pipe gets into a water heater, whereby the pressure cell controlled by the water pressure of the diaphragm pressure switch is switched on in the connection line.

Durch das Sieden des Wassers im Durchlauferhitzer, entsteht in diesem ein Druck nach allen Seiten und damit auch zurück in die Druckdose des Membrandruckschalters.When the water boils in the water heater, it is created in it a pressure on all sides and thus also back into the pressure cell of the membrane pressure switch.

Dadurch wird ein unregelmässiges Arbeiten des empfindlichen Membrandruckschalters verursacht.This causes the sensitive membrane pressure switch to work irregularly caused.

Bei einer bekannten Kaffeemaschine ist aus diesem Grunde für die Ablauföffnung der Membrandose ein wesentlich kleinerer Querschnitt gewählt als für die Zulauföffnung, so daß eine ausreichende Drosselwirkung auftritt.In a known coffee machine is for this reason for the drain opening a much smaller cross-section for the diaphragm box than for the inlet opening, so that a sufficient throttling effect occurs.

Die Erfindung sieht demgegenüber ein Rückstoßventil im Ablauf stutzen der Druckdose vor, wobei eine in einer Kammer angeordnete Kugel den Rückstoßweg zur Membrandose verschließt, sobald ein Druck in dieser Richtung wirkt.The invention, on the other hand, sees a non-return valve cut in the drain the pressurized can, with a ball arranged in a chamber leading to the recoil path to the diaphragm box closes as soon as pressure is applied in this direction.

In der Zeichnung ist ein Ausführungsbeispiel dargestellt: Fig.l zeigt eine Seitenansicht der Kaffeemaschine, teilweise im Schnitt.In the drawing, an embodiment is shown: Fig.l shows a side view of the coffee maker, partly in section.

Fig.2 zeigt eine Seitenansicht des Membrandruckschalters.Fig. 2 shows a side view of the membrane pressure switch.

Fig.3 zeigt eine Draufsicht des Membrandruckschalters.Fig. 3 shows a top view of the membrane pressure switch.

Fig.4 zeigt eine Seitenansicht des Membrandruckschalters um 900 gegenüber Fig.2 gedreht.4 shows a side view of the membrane pressure switch at 900 opposite Fig. 2 rotated.

Fig.5 zeigt einen Ausschnitt aus Fig.4.FIG. 5 shows a section from FIG.

In einem Kaffeemaschinengehäuse m mit Frischwasserbehälter n und Wasserüberlauf p ist der Durchlauferhitzer e mit der Steigleitung r angeordnet. Das Wasser fließt vom Frischwasserbehälter n über den Ablauf o zur Membrandose d und von dort über den Ablaufstutzen j und der Schlauchleitung f in den Durchlauferhitzer e. Das darin erhitzte Wasser gelangt über das Steigrohr r zum Wasserüberlauf p und von dort in den nicht dargestellten Kaffeefilter und den Kaffeekrug. Die Druckdose d ist mit einem Schalter g vereinigt.In a coffee machine housing m with fresh water tank n and water overflow p, the water heater e is arranged with the riser r. The water flows from the fresh water tank n via the drain o to the diaphragm box d and from there via the drain connection j and the hose line f into the water heater e. That in it Heated water reaches the water overflow p via the riser pipe r and from there into the coffee filter, not shown, and the coffee mug. The pressure cell d is with united in a switch g.

über den Hebel i und den Stößel gl wird von der Membran h durch ihre Bewegung der Schalter g ein- und ausgeschaltet.Via the lever i and the plunger gl, the membrane h through its Moving the switch g on and off.

Im Ablaufstutzen j des Membrandruckschalters befindet sich die Kammer a mit Kugel b. Bei einem Rückstoß des im Durchlauferhitzer e siedenden Wassers wird die Öffnung c zur Membrandose d verschlossen, wie in Abbildung 5 gezeigt.The chamber is located in the outlet connection j of the diaphragm pressure switch a with ball b. When the water boiling in the water heater e is recoil the opening c to the membrane can d is closed, as shown in Figure 5.

Das Herausfallen der Kugel b wird durch das Blättchen kl verhindert, das in dem Schlitz k klemmt.The falling out of the ball b is prevented by the leaflet kl, that is stuck in the slot k.

Claims (1)

Patent- und SchutzanspruchPatent and protection claim Elektrischer Membrandruckschalter für eine Kaffeemaschine mit einem Kaltwasserbehälter, von dem das Wasser durch eine Verbindungsleitung in einen Durchlauferhitzer gelangt, wobei die vom Wasserdruck gesteuerte Druckdose des Membrandruckschalters in die Verbindungsleitung eingeschaltet ist, dadurch gekennzeichnet, daß ein Rückstoßventil im Ablauf stutzen der Druckdose angeordnet ist, wobei eine in einer Kammer angeordnete Kugel den Rückstoßweg zur Membrandose verschließt, sobald ein Druck in dieser Richtung wirkt.Electric membrane pressure switch for a coffee machine with a Cold water tank from which the water flows through a connecting pipe into a flow heater reaches, whereby the pressure cell of the diaphragm pressure switch controlled by the water pressure is switched into the connecting line, characterized in that a non-return valve In the drain clip the pressure cell is arranged, with one arranged in a chamber Ball closes the recoil path to the diaphragm can as soon as pressure is applied in this direction works.
DE2403297A 1974-01-24 1974-01-24 Filter coffee maker with riser pipe - has electric diaphragm pressure switch and non-return valve for hot water Pending DE2403297A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2403297A DE2403297A1 (en) 1974-01-24 1974-01-24 Filter coffee maker with riser pipe - has electric diaphragm pressure switch and non-return valve for hot water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2403297A DE2403297A1 (en) 1974-01-24 1974-01-24 Filter coffee maker with riser pipe - has electric diaphragm pressure switch and non-return valve for hot water

Publications (1)

Publication Number Publication Date
DE2403297A1 true DE2403297A1 (en) 1975-08-21

Family

ID=5905558

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2403297A Pending DE2403297A1 (en) 1974-01-24 1974-01-24 Filter coffee maker with riser pipe - has electric diaphragm pressure switch and non-return valve for hot water

Country Status (1)

Country Link
DE (1) DE2403297A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739834C2 (en) * 1977-09-03 1981-12-03 Wigo Gottlob Widmann & Söhne GmbH und Co KG, 7730 Villingen-Schwenningen Device for preparing coffee or tea

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739834C2 (en) * 1977-09-03 1981-12-03 Wigo Gottlob Widmann & Söhne GmbH und Co KG, 7730 Villingen-Schwenningen Device for preparing coffee or tea

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