EP1473521B1 - Cooking oven with spraying nozzles for cleaning of the oven cavity - Google Patents

Cooking oven with spraying nozzles for cleaning of the oven cavity Download PDF

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Publication number
EP1473521B1
EP1473521B1 EP04008540A EP04008540A EP1473521B1 EP 1473521 B1 EP1473521 B1 EP 1473521B1 EP 04008540 A EP04008540 A EP 04008540A EP 04008540 A EP04008540 A EP 04008540A EP 1473521 B1 EP1473521 B1 EP 1473521B1
Authority
EP
European Patent Office
Prior art keywords
inlet duct
spraying
water
oven
water supply
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
EP04008540A
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German (de)
French (fr)
Other versions
EP1473521A1 (en
Inventor
Lutz Riefenstein
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.)
Welbilt Deutschland GmbH
Original Assignee
Convotherm Elektrogeraete GmbH
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 Convotherm Elektrogeraete GmbH filed Critical Convotherm Elektrogeraete GmbH
Publication of EP1473521A1 publication Critical patent/EP1473521A1/en
Application granted granted Critical
Publication of EP1473521B1 publication Critical patent/EP1473521B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/005—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning using a cleaning liquid

Definitions

  • the invention relates to a device for heat treatment of food with a cooking chamber, which is formed in a closable by a door housing, and a spraying or spraying device for spraying and cleaning the cooking chamber, wherein the spraying or spraying a spray head and a flexible Supply line includes, which is connected to a water connection of the housing.
  • a device of this kind is from the DE-37 22 282 C2 known.
  • this known device there is the disadvantage that the water connection of the housing is located just below the housing bottom, so that the spray head due to the relatively long supply line on the floor or the footprint of the device or in adjacent, dirty water containing or leading areas are stored can.
  • the negative pressure created in the drinking water pipeline could thus suck dirty water into the drinking water network.
  • it is prescribed by the technical standards to protect such hand shower connections either with elaborate safety devices against backflow or to avoid this situation by other constructive measures in principle. Both measures require a relatively high cost.
  • the object of the invention is to provide a particularly simple embodiment for securing against backflow of dirty water into the drinking water network.
  • the water connection for the flexible supply line is disposed in the vicinity of the upper edge of the housing and the supply line has a length which is shorter than the distance of the water connection to ground near wastewater areas.
  • This can be in the area of the footprint of the device or the floor, in the environment of which drainage-water-containing or containing areas or containers may be located.
  • a simple measure namely the raising of the water connection, that even a hanging spray head can not immerse in a located in the vicinity of the device dirty water area, so that the risk of sucking back of dirty water is eliminated in the drinking water network.
  • a safety device against backflow is used between water connection and supply line.
  • the backup device against backflow can be a pipe aerator, which represents a simple and therefore inexpensive ventilation fitting.
  • a return system in the manner of a gallows shower can be provided in a further embodiment of the invention for the supply line.
  • a further advantageous embodiment of the invention provides that a suspension device for the spray head is arranged below the securing device against backflow. Due to the lower suspension device for the spray head is achieved that in the leaky security device against backflow, the water in the supply line escapes to the outside.
  • a cooking appliance designated 1 on a water connection 2 which is located in the lower part of the cooking appliance. From this water connection goes from a flexible supply line 3, which leads to a spray head 4, which is suspended in a suspension device 5 at the upper part of the cooking appliance. If here the spray head 4 is not hooked into the holder 5, but is loosely stored, he can get into nearby dirty water areas, which in case of breakage of a drinking water line dirty water can get into this line or a complex safety device must be used to prevent it.
  • the same reference numerals have been used for identical parts.
  • the embodiment according to the invention consists in the fact that the water connection 2 is arranged in the uppermost region of the cooking appliance and the feed line 3 has such a length that even with a dependent spray head it can not reach waste water areas near the ground.
  • the suspension device 5 is provided in the vicinity of the water connection 2, while in the embodiment according to FIG. 3 the suspension device for the spray head is provided at the lower end of the cooking appliance, so that the supply line is oriented in an extended downward direction.
  • a schematically indicated securing device against backflow 6 between the water connection 2 and feed line 3 above the suspension device 5 of the spray head 4 is provided.
  • This is the relatively cheap embodiment of a pipe aerator in order to additionally increase the safety against backflow required by the technical standards.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The heat treatment device (1) has a water connection (2) for a flexible supply line (3) with a spray head (4) on the end. The water connection is fitted in the top region of the oven housing, and the length of the supply line is short enough to ensure that the spray head is kept clear of the region adjacent to the floor, where dirty water may have collected.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Wärmebehandlung von Nahrungsmitteln mit einem Garraum, der in einem mittels einer Tür verschließbaren Gehäuse ausgebildet ist, sowie einer Spritz- oder Sprühvorrichtung zum Aussprühen und Reinigen des Garraumes, wobei die Spritz- oder Sprühvorrichtung einen Sprühkopf und eine flexible Zuführungsleitung umfasst, die an einen Wasseranschluss des Gehäuses angeschlossen ist.The invention relates to a device for heat treatment of food with a cooking chamber, which is formed in a closable by a door housing, and a spraying or spraying device for spraying and cleaning the cooking chamber, wherein the spraying or spraying a spray head and a flexible Supply line includes, which is connected to a water connection of the housing.

Eine Vorrichtung dieser Art ist aus der DE-37 22 282 C2 bekannt. Bei dieser bekannten Vorrichtung besteht der Nachteil, dass der Wasseranschluss des Gehäuses sich knapp unterhalb des Gehäusebodens befindet, so dass der Sprühkopf aufgrund der verhältnismäßig langen Zuführungsleitung auch auf dem Boden bzw. der Aufstellfläche des Gerätes oder in angrenzenden, Schmutzwasser enthaltenden oder führendenden Bereichen abgelegt werden kann. Im Falle eines Rohrbruches der Trinkwasserleitung könnte der in der Trinkwasserrohrleitung entstehende Unterdruck somit Schmutzwasser in das Trinkwassernetz saugen. Um solche Situationen sicher zu verhindern, wird seitens der technischen Normen vorgeschrieben, derartige Handbrauseanschlüsse entweder mit aufwendigen Sicherheitseinrichtungen gegen ein Rückfließen abzusichern oder diese Situation durch andere konstruktive Maßnahmen grundsätzlich zu vermeiden. Beide Maßnahmen erfordern einen verhältnismäßig hohen Aufwand.A device of this kind is from the DE-37 22 282 C2 known. In this known device, there is the disadvantage that the water connection of the housing is located just below the housing bottom, so that the spray head due to the relatively long supply line on the floor or the footprint of the device or in adjacent, dirty water containing or leading areas are stored can. In the event of a pipe breakage of the drinking water pipe, the negative pressure created in the drinking water pipeline could thus suck dirty water into the drinking water network. In order to reliably prevent such situations, it is prescribed by the technical standards to protect such hand shower connections either with elaborate safety devices against backflow or to avoid this situation by other constructive measures in principle. Both measures require a relatively high cost.

In der DE 9 203 722.4 ist eine Vorrichtung beschrieben, in der die Zuführungsleitung in der Nähe der Oberkante des Gehäuses angeordnet ist.In the DE 9 203 722.4 a device is described in which the supply line is arranged in the vicinity of the upper edge of the housing.

Aufgabe der Erfindung ist es, eine besonders einfache Ausgestaltung für die Sicherung gegen ein Rückfließen von Schmutzwasser in das Trinkwassernetz zu schaffen.The object of the invention is to provide a particularly simple embodiment for securing against backflow of dirty water into the drinking water network.

Diese Aufgabe wird ausgehend von einer Vorrichtung der eingangs erläuterten Art erfindungsgemäß dadurch gelöst, dass der Wasseranschluss für die flexible Zuführungsleitung in der Nähe der Oberkante des Gehäuses angeordnet ist und die Zuführungsleitung eine Länge aufweist, die kürzer als der Abstand des Wasseranschlusses zu bodennahen Schmutzwasserbereichen ist. Dies kann im Bereich der Aufstellfläche des Gerätes bzw. des Bodens sein, in dessen Umfeld sich schmutzwasserführende oder enthaltenden Bereiche oder Behälter befinden können. Hier wird durch eine einfache Maßnahme, nämlich das Höherlegen des Wasseranschlusses erreicht, dass auch ein herabhängender Sprühkopf nicht in einen im Umfeld des Gerätes befindlichen Schmutzwasserbereich eintauchen kann, so dass die Gefahr eines Rücksaugens von Schmutzwasser in das Trinkwassernetz beseitigt ist.This object is achieved on the basis of a device of the type described above according to the invention that the water connection for the flexible supply line is disposed in the vicinity of the upper edge of the housing and the supply line has a length which is shorter than the distance of the water connection to ground near wastewater areas. This can be in the area of the footprint of the device or the floor, in the environment of which drainage-water-containing or containing areas or containers may be located. Here is achieved by a simple measure, namely the raising of the water connection, that even a hanging spray head can not immerse in a located in the vicinity of the device dirty water area, so that the risk of sucking back of dirty water is eliminated in the drinking water network.

Gemäß einer Weiterbildung der Erfindung ist vorgesehen, dass zwischen Wasseranschluss und Zuführungsleitung eine Sicherungseinrichtung gegen Rückfließen eingesetzt ist. In weiterer vorteilhafter Ausgestaltung kann die Sicherungseinrichtung gegen Rückfließen ein Rohrbelüfter sein, der eine einfache und daher preiswerte Belüftungsarmatur darstellt.According to one embodiment of the invention, it is provided that a safety device against backflow is used between water connection and supply line. In a further advantageous embodiment, the backup device against backflow can be a pipe aerator, which represents a simple and therefore inexpensive ventilation fitting.

Um das Eintauchen des Sprühkopfes in einen Schmutzwasserbereich wirkungsvoll zu verhindern, kann in weiterer Ausgestaltung der Erfindung für die Zuführungsleitung ein Rückholsystem nach Art einer Galgenbrause vorgesehen sein.In order to effectively prevent the immersion of the spray head in a dirty water area, a return system in the manner of a gallows shower can be provided in a further embodiment of the invention for the supply line.

Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, dass eine Aufhängevorrichtung für den Sprühkopf unterhalb der Sicherungseinrichtung gegen Rückfließen angeordnet ist. Durch die tiefergelegene Aufhängevorrichtung für den Sprühkopf wird erreicht, dass bei der undichten Sicherungseinrichtung gegen Rückfließen das in der Zuführungsleitung befindliche Wasser nach außen austritt.A further advantageous embodiment of the invention provides that a suspension device for the spray head is arranged below the securing device against backflow. Due to the lower suspension device for the spray head is achieved that in the leaky security device against backflow, the water in the supply line escapes to the outside.

Die Erfindung ist nachfolgend anhand von Ausführungsbeispielen näher erläutert. In der Zeichnung zeigen:

Fig. 1
eine Vorrichtung nach dem Stande der Technik;
Fig. 2
eine erste Ausführungsform der erfindungsgemäßen Vorrichtung; und
Fig. 3
eine zweite Ausführungsform einer solchen Vorrichtung.
The invention is explained in more detail below with reference to embodiments. In the drawing show:
Fig. 1
a device according to the prior art;
Fig. 2
a first embodiment of the device according to the invention; and
Fig. 3
a second embodiment of such a device.

Bei der bekannten Vorrichtung gemäß Figur 1, weist ein mit 1 bezeichnetes Gargerät einen Wasseranschluss 2 auf, der sich im unteren Bereich des Gargerätes befindet. Von diesem Wasseranschluss geht eine flexible Zuführungsleitung 3 aus, die zu einem Sprühkopf 4 führt, der in einer Aufhängevorrichtung 5 am oberen Teil des Gargerätes aufgehängt ist. Wenn hier der Sprühkopf 4 nicht in die Halterung 5 eingehängt wird, sondern lose abgelegt ist, so kann er in nahegelegene Schmutzwasserbereiche gelangen, wodurch bei Bruch einer Trinkwasserleitung Schmutzwasser in diese Leitung gelangen kann bzw. eine aufwendige Sicherheitseinrichtung zu dessen Verhinderung eingesetzt werden muss.In the known device according to FIG. 1 , A cooking appliance designated 1 on a water connection 2, which is located in the lower part of the cooking appliance. From this water connection goes from a flexible supply line 3, which leads to a spray head 4, which is suspended in a suspension device 5 at the upper part of the cooking appliance. If here the spray head 4 is not hooked into the holder 5, but is loosely stored, he can get into nearby dirty water areas, which in case of breakage of a drinking water line dirty water can get into this line or a complex safety device must be used to prevent it.

Bei den Ausführungsbeispielen nach den Figuren 2 und 3 sind für gleiche Teile gleiche Bezugszeichen verwendet worden. Die erfindungsgemäße Ausgestaltung besteht nun darin, dass der Wasseranschluss 2 im obersten Bereich des Gargerätes angeordnet ist und die Zuführungsleitung 3 eine solche Länge aufweist, dass selbst bei abhängendem Sprühkopf dieser nicht in bodennahe Schmutzwasserbereiche gelangen kann.In the embodiments of the Figures 2 and 3 the same reference numerals have been used for identical parts. The embodiment according to the invention consists in the fact that the water connection 2 is arranged in the uppermost region of the cooking appliance and the feed line 3 has such a length that even with a dependent spray head it can not reach waste water areas near the ground.

Bei der Ausführungsform nach Figur 2 ist die Aufhängevorrichtung 5 in der Nähe des Wasseranschlusses 2 vorgesehen, während bei der Ausgestaltung nach Figur 3 die Aufhängevorrichtung für den Sprühkopf am unteren Ende des Gargerätes vorgesehen ist, so dass die Zuführungsleitung gestreckt nach unten ausgerichtet ist.In the embodiment according to FIG. 2 the suspension device 5 is provided in the vicinity of the water connection 2, while in the embodiment according to FIG. 3 the suspension device for the spray head is provided at the lower end of the cooking appliance, so that the supply line is oriented in an extended downward direction.

Bei beiden Ausführungsformen ist eine schematisch angedeutete Sicherungseinrichtung gegen Rückfließen 6 zwischen Wasseranschluss 2 und Zuführungsleitung 3 oberhalb der Aufhängevorrichtung 5 des Sprühkopfes 4 vorgesehen. Es handelt sich hier um die verhältnismäßig billige Ausführungsform eines Rohrbelüfters, um die seitens der technischen Normen geforderte Sicherheit gegen Rückfließen zusätzlich zu erhöhen.In both embodiments, a schematically indicated securing device against backflow 6 between the water connection 2 and feed line 3 above the suspension device 5 of the spray head 4 is provided. This is the relatively cheap embodiment of a pipe aerator in order to additionally increase the safety against backflow required by the technical standards.

Claims (5)

  1. Device for heat treatment of food with an oven cavity which is formed in a casing which can be closed by means of a door, and with a spraying or sprinkling device for spraying into and cleaning the oven cavity, the spraying or sprinkling device including a spray nozzle (4) and a flexible inlet duct (3) which is connected to a water supply (2) of the casing, characterized in that the water supply (2) for the flexible inlet duct (3) is disposed near the top edge of the casing (1), and the inlet duct (3) has a length which is shorter than the distance between the water supply (2) and ground level waste water areas.
  2. Device according to claim 1, characterized in that a safety device (6) for preventing backflow is inserted between the water supply (2) and the inlet duct (3).
  3. Device according to claim 2, characterized in that the safety device (6) for preventing backflow is a pipe aerator.
  4. Device according to one of the claims 1 to 3, characterized in that a pre-wash unit type return system is provided for the inlet duct (3).
  5. Device according to one of the claims 2 or 3, characterized in that a suspension arrangement (5) is disposed under the safety device (6) for preventing backflow.
EP04008540A 2003-04-30 2004-04-08 Cooking oven with spraying nozzles for cleaning of the oven cavity Expired - Lifetime EP1473521B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10319587A DE10319587B3 (en) 2003-04-30 2003-04-30 Heat treatment device for foodstuffs has water connection for flexible supply line in top region of housing, this line being shorter than distance from connection to floor
DE10319587 2003-04-30

Publications (2)

Publication Number Publication Date
EP1473521A1 EP1473521A1 (en) 2004-11-03
EP1473521B1 true EP1473521B1 (en) 2011-06-15

Family

ID=32186011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04008540A Expired - Lifetime EP1473521B1 (en) 2003-04-30 2004-04-08 Cooking oven with spraying nozzles for cleaning of the oven cavity

Country Status (4)

Country Link
EP (1) EP1473521B1 (en)
JP (1) JP3927195B2 (en)
AT (1) ATE513167T1 (en)
DE (1) DE10319587B3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008003562A1 (en) 2008-01-09 2009-07-16 Convotherm Elektrogeräte GmbH Cooking item carrier for multiple skewers tipped with finger food, has carrier plate and supports, made of carrier plates, provided for skewers and finger food, where two support strips are arranged in pair wise
US9677769B2 (en) 2012-02-02 2017-06-13 Convotherm Elektrogeraete Gmbh Flexible sequence control and method for automated cleaning system of a cooking device
DE102016206483A1 (en) 2016-04-18 2017-10-19 Convotherm Elektrogeräte GmbH A method of determining a cleaning need and quality management monitoring system of a commercial cooking appliance, and a commercial cooking appliance
DE102016108724A1 (en) * 2016-05-11 2017-11-16 Rational Aktiengesellschaft Cooking appliance and method for controlling a cooking appliance
DE102022114269A1 (en) 2022-06-07 2023-12-07 Rational Aktiengesellschaft Cooking device with a self-cleaning system and a method for changing cleaning parameters for the cooking device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3722282A1 (en) * 1986-11-24 1988-06-01 Convotherm Elektrogeraete DEVICE FOR HEAT TREATMENT OF FOOD
DE8902508U1 (en) * 1989-03-02 1989-05-18 Lechmetall Landsberg GmbH, 8910 Landsberg Device for cleaning the cooking chamber of a cooking appliance
DE9203722U1 (en) * 1992-03-19 1992-06-04 Fuhst, Wolfgang, 7730 Villingen-Schwenningen Deck oven with oil, gas or electric heating

Also Published As

Publication number Publication date
JP2004333118A (en) 2004-11-25
EP1473521A1 (en) 2004-11-03
ATE513167T1 (en) 2011-07-15
DE10319587B3 (en) 2004-05-27
JP3927195B2 (en) 2007-06-06

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