EP1488723B2 - Equipment for heat treatment of substances, especially foods - Google Patents

Equipment for heat treatment of substances, especially foods Download PDF

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Publication number
EP1488723B2
EP1488723B2 EP04007993A EP04007993A EP1488723B2 EP 1488723 B2 EP1488723 B2 EP 1488723B2 EP 04007993 A EP04007993 A EP 04007993A EP 04007993 A EP04007993 A EP 04007993A EP 1488723 B2 EP1488723 B2 EP 1488723B2
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EP
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Prior art keywords
cooking chamber
depression
condensation
chamber
fan
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EP04007993A
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German (de)
French (fr)
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EP1488723A1 (en
EP1488723B1 (en
Inventor
Lutz Riefenstein
Günther Wurdinger
Rainer Lammerskitten
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Welbilt Deutschland GmbH
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Convotherm Elektrogeraete GmbH
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    • 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
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising

Definitions

  • the invention relates to a device for heat treatment of substances, in particular food, with a cooking chamber surrounded by a housing, separated by a separating plate from the cooking chamber, but fluidly connected via gap passages blower chamber with a circulating air blower, a device for generating a steam-containing treatment medium in the cooking chamber , A condensation device for condensing excess steam and with shut-off devices in all out of the oven leading to the outside lines.
  • a device of this kind is from the DE 196 49 452 A1 known.
  • the mixed condensation takes place outside the cooking appliance in a cooking system encompassing the pipe system, which not only represents an additional structural effort, but also brings an influence on the mixed condensation with it, as this pipe system emanating from the device outlet.
  • the inflow of the water vapor to be condensed in the device outlet is limited due to its relatively small cross-section, so that a longer period of time is necessary for a larger steam volume to be deposited.
  • ventilation takes place via the steam generator whose level determines the level of negative pressure.
  • a disadvantage of this solution is the fact that in the case of aeration water is entrained, which leads to an additional evaporation in the oven, which may not be desirable.
  • the object of the invention is to provide a device of the type described above in such a way that a condensation of large amounts of steam rapid recycling of the dried air here without interference of the mixed condensation is made possible by the device sequence.
  • the inlet to the mixed condensing device starts from the pressure range of the blower and is not in the cooking chamber outlet, a larger cross section for the entry of the vapors to be condensed can be provided.
  • the steam-air mixture is conveyed by the blower in an increased degree in the Mischkondensations announced. Through these measures, it is possible to condense large amounts of steam in a short time and remove it in the form of condensate from the oven.
  • the mixed condensation device extends into the cooking chamber and is in direct communication with it, the air dried in this condensation process passes directly into the cooking chamber. Additional lines, which increase the space requirement and also increase the construction costs, are not necessary here.
  • At least one injector nozzle is provided for the mixed condensation, which is located in the immediate pressure region of the circulating air blower and whose jet direction is oriented essentially in the direction of flow of the treatment medium. Since the injector nozzle or the injector nozzles provided for the water injection are in the immediate pressure range of the circulating air blower, the steam-air mixture from which the vapor component is to be condensed out is brought into intimate connection with the sprayed-out water due to the pressure effect of the circulating air blower. The proximity of this injector nozzle to the circulating air blower is extremely advantageous for the mixing process between steam and injected water.
  • the injector nozzle or injector nozzles is disposed on the gap of the separating plate opposite wall of the fan chamber with spray direction on the gap at the lower end of the separating plate, so a sufficient mixing space is created in which the condensation can take place, so that after passage of the gaseous Mixture below the separating plate already dried and released from the steam air is present, which can then enter directly into the cooking chamber, this process then continues even in the upwardly open to the cooking chamber condensation device.
  • the cooking chamber floor in the injector nozzle or injector nozzles has an outgoing from the pressure range of the fan chamber and extending into the cooking chamber channel-like recess whose bottom is inclined towards the cooking chamber and that the injector nozzle or Injector nozzles is arranged on the pressure region of the circulating air fan associated end face of the channel-like depression or are.
  • This channel-like recess can be designed according to the needs in width and depth, to provide a sufficient condensation space, whereby additional lines outside are avoided.
  • An advantageous development of the invention provides that the width of the recess about 20 to 25 % of the device floor width.
  • the depression can be covered starting from the separating plate over part of its length by a splash guard.
  • This splash guard can be broken through openings in the invention, so that the dried by the condensation of air, in the cooking chamber can occur even before the end of this splash guard.
  • a device drain is provided at the lowest point of the recess. This embodiment is suitable when it can be expected with a low amount of fat. If, on the other hand, larger amounts of fat are produced, then it is advantageous for the water from the mixed condensation to have a separate outlet.
  • the cooking chamber has an intake pipe monitored by a vacuum valve for ambient air, it is thereby achieved that ambient air flows into the cooking chamber when a negative pressure results from the condensation of the vapors. This ensures that only the amount of vapor discharged for dehumidification is replaced by fresh ambient air. Due to the inventive restriction of the supplied ambient air, according to the volume decrease of the vapors, it is achieved that only the absolutely necessary vapor replacement takes place, so that only the absolutely necessary fresh air supplied must be heated, which has a favorable influence on the energy balance.
  • a vacuum valve a simple cheap spring-loaded vacuum valve can be used.
  • a cooking chamber 2 is provided, in which these substances are accommodated for treatment.
  • a fan chamber 4 is separated, in which a circulating air fan 5 is provided, which is driven by a motor 6.
  • the circulation fan is surrounded by a heater 7, which serves to heat the treatment medium, which is sucked through a central opening 8 from the cooking chamber into the fan room.
  • the separating plate 3 has not shown side slits at its upper and its lower edge gap passages 9 and 10, via which the treatment medium is conveyed into the cooking chamber 2 after heating by the heater 7 again. How out FIG.
  • a channel-like recess 12 is provided in the housing bottom 11, which extends starting from the pressure region 13 of the fan chamber 4 in the cooking chamber and is thereby inclined to the cooking chamber.
  • a device drain 14 is provided at the lowest point of this channel-like depression.
  • An injector nozzle 16 which injects cold water in the direction of the arrows 17 into the channel-like recess 12, essentially with direct current with the flow of the treatment medium indicated by the arrows 18, is arranged on the end face 15 of the channel-like depression 12 opposite the gap passage 10.
  • the resulting in this mixed condensation water runs at the end of the channel-like recess 12 on the bottom 19 to the device drain 14, which opens into a sipe 20, the drain pipe is designated 21. 22 denotes an exhaust pipe.
  • the space within the recess 12 is referred to as a condensation tray with the reference numeral 23, which may be covered by a splash guard 24 in the form of a sheet.
  • This splash guard can also be provided with openings, so that the freed from condensation in the condensation of air already in this area in the cooking chamber 2 can escape.
  • an inlet line 26 monitored by a vacuum valve 25 is provided in the upper region of the cooking chamber.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Commercial Cooking Devices (AREA)
  • Baking, Grill, Roasting (AREA)
  • Drying Of Solid Materials (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Wärmebehandlung von Substanzen, insbesondere Nahrungsmitteln, mit einem von einem Gehäuse umgebenen Garraum, einem durch ein Trennblech vom Garraum getrennten, jedoch strömungsmäßig über Spaltdurchlässe verbundenen Gebläseraum mit einem Umluftgebläse, einer Einrichtung zur Erzeugung eines dampfhaltigen Behandlungsmediums im Garraum, einer Kondensationseinrichtung zum Kondensieren von überschüssigem Dampf sowie mit Absperreinrichtungen in allen aus dem Garraum nach außen führenden Leitungen.The invention relates to a device for heat treatment of substances, in particular food, with a cooking chamber surrounded by a housing, separated by a separating plate from the cooking chamber, but fluidly connected via gap passages blower chamber with a circulating air blower, a device for generating a steam-containing treatment medium in the cooking chamber , A condensation device for condensing excess steam and with shut-off devices in all out of the oven leading to the outside lines.

Eine Vorrichtung dieser Art ist aus der DE 196 49 452 A1 bekannt.A device of this kind is from the DE 196 49 452 A1 known.

Bei dieser bekannten Vorrichtung findet die Mischkondensation außerhalb des Gargerätes in einem das Gargerät umgreifenden Rohrsystem statt, was nicht nur einen zusätzlichen baulichen Aufwand darstellt, sondern auch eine Beeinflussung der Mischkondensation mit sich bringt, da dieses Rohrsystem vom Geräteauslauf ausgeht. Hierdurch ist das Einströmen des zu kondensierenden Wasserdampfes in den Geräteauslauf aufgrund dessen verhältnismäßig geringen Querschnittes beschränkt, so dass bei einem größeren, niederzuschlagenden Dampfvolumen ein längerer Zeitraum notwendig ist. Im Falle eines zu starken Unterdruckes im Garraum erfolgt die Belüftung über den Dampferzeuger, dessen Füllstand die Höhe des Unterdruckes bestimmt. Nachteilig bei dieser Lösung ist die Tatsache, dass im Falle einer Belüftung Wasser mitgerissen wird, welches zu einer zusätzlichen Verdampfung im Garraum führt, die unter Umständen nicht erwünscht ist.In this known device, the mixed condensation takes place outside the cooking appliance in a cooking system encompassing the pipe system, which not only represents an additional structural effort, but also brings an influence on the mixed condensation with it, as this pipe system emanating from the device outlet. As a result, the inflow of the water vapor to be condensed in the device outlet is limited due to its relatively small cross-section, so that a longer period of time is necessary for a larger steam volume to be deposited. In the case of excessive underpressure in the cooking chamber ventilation takes place via the steam generator whose level determines the level of negative pressure. A disadvantage of this solution is the fact that in the case of aeration water is entrained, which leads to an additional evaporation in the oven, which may not be desirable.

Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs erläuterten Art so auszugestalten, dass eine Kondensation großer Dampfmengen eine rasche Rückführung der hierbei getrockneten Luft ohne Störung der Mischkondensation durch den Geräteablauf ermöglicht wird.The object of the invention is to provide a device of the type described above in such a way that a condensation of large amounts of steam rapid recycling of the dried air here without interference of the mixed condensation is made possible by the device sequence.

Diese Aufgabe wird bei einer Vorrichtung gemäß Anspruch 1 erfindungsgemäß gelöst.This object is achieved according to the invention in a device according to claim 1.

Da der Eintritt in die Mischkondensationseinrichtung vom Druckbereich des Gebläses ausgeht und sich nicht im Garraumauslass befindet, kann ein größerer Querschnitt für den Eintritt der zu kondensierenden Dämpfe bereitgestellt werden. Außerdem wird das Dampf-Luftgemisch durch das Gebläse in verstärktem Maße in die Mischkondensationseinrichtung hineinbefördert. Durch diese Maßnahmen ist es möglich, große Mengen an Dampf in kurzer Zeit zu kondensieren und in Form von Kondensat aus dem Garraum herauszuschaffen. Da die Mischkondensationseinrichtung sich in den Garraum hinein erstreckt und mit diesem in unmittelbarer Verbindung steht, gelangt die bei diesem Kondensationsvorgang getrocknete Luft unmittelbar in den Garraum. Zusätzliche Leitungen, die den Platzbedarf erhöhen und auch den baulichen Aufwand erhöhen, sind hierbei nicht notwendig. Diese Leitungen bedingen nur einen Druckverlust und eine Verzögerung der Überführung der getrockneten Luft in den Garraum. Da die erfindungsgemäße Ausgestaltung einen Ablauf des Kondensats, getrennt vom Geräteablauf, ermöglicht und insbesondere einen getrennten Ablauf von einem möglichen zusätzlichen Fettablauf ermöglicht, können Störungen in der Beseitigung des Kondensats, bedingt durch Fettablagerungen, vermieden werden.Since the inlet to the mixed condensing device starts from the pressure range of the blower and is not in the cooking chamber outlet, a larger cross section for the entry of the vapors to be condensed can be provided. In addition, the steam-air mixture is conveyed by the blower in an increased degree in the Mischkondensationseinrichtung. Through these measures, it is possible to condense large amounts of steam in a short time and remove it in the form of condensate from the oven. Since the mixed condensation device extends into the cooking chamber and is in direct communication with it, the air dried in this condensation process passes directly into the cooking chamber. Additional lines, which increase the space requirement and also increase the construction costs, are not necessary here. These lines require only a pressure drop and a delay of the transfer of the dried air into the oven. Since the inventive design allows a drain of the condensate, separate from the device drain, and in particular allows a separate sequence of a possible additional fat drain, disturbances in the removal of the condensate due to fat deposits can be avoided.

Erfindungsgemäß ist für die Mischkondensation zumindest eine Injektordüse vorgesehen, die sich im unmittelbaren Druckbereich des Umluftgebläses befindet und deren Strahlrichtung im wesentlichen in Richtung der Strömungsrichtung des Behandlungsmediums ausgerichtet. Da sich die für die Wassereinspritzung vorgesehene Injektordüse oder die Injektordüsen im unmittelbaren Druckbereich des Umluftgebläses befinden, wird das Dampf-Luftgemisch, aus welchem der Dampfanteil herauskondensiert werden soll, in innige Verbindung mit dem ausgesprühten Wasser aufgrund der Druckwirkung des Umluftgebläses gebracht. Die unmittelbare Nähe dieser Injektordüse zum Umluftgebläse ist für den Mischvorgang zwischen Dampf und eingespritztem Wasser äußerst vorteilhaft.According to the invention, at least one injector nozzle is provided for the mixed condensation, which is located in the immediate pressure region of the circulating air blower and whose jet direction is oriented essentially in the direction of flow of the treatment medium. Since the injector nozzle or the injector nozzles provided for the water injection are in the immediate pressure range of the circulating air blower, the steam-air mixture from which the vapor component is to be condensed out is brought into intimate connection with the sprayed-out water due to the pressure effect of the circulating air blower. The proximity of this injector nozzle to the circulating air blower is extremely advantageous for the mixing process between steam and injected water.

Weiters ist erfindungsgemäß die Injektordüse bzw. Injektordüsen an der dem Spaltdurchlass des Trennbleches gegenüberliegenden Wand des Gebläseraumes mit Sprührichtung auf den Spalt am unteren Ende des Trennbleches angeordnet, so ist ein ausreichender Mischraum geschaffen, in welchem die Kondensation stattfinden kann, so dass nach Durchtritt des gasförmigen Gemisches unterhalb des Trennbleches bereits abgetrocknete und vom Dampf befreite Luft vorliegt, die dann unmittelbar in den Garraum eintreten kann, wobei sich dieser Vorgang dann noch in der nach oben zum Garraum offenen Kondensationseinrichtung fortsetzt.Furthermore, according to the invention, the injector nozzle or injector nozzles is disposed on the gap of the separating plate opposite wall of the fan chamber with spray direction on the gap at the lower end of the separating plate, so a sufficient mixing space is created in which the condensation can take place, so that after passage of the gaseous Mixture below the separating plate already dried and released from the steam air is present, which can then enter directly into the cooking chamber, this process then continues even in the upwardly open to the cooking chamber condensation device.

Eine vorteilhafte konstruktive Ausgestaltung ergibt sich gemäß der Erfindung dadurch, dass der Garraumboden im Bereich der Injektordüse bzw. Injektordüsen eine vom Druckbereich des Gebläseraumes ausgehende und in den Garraum reichende kanalartige Vertiefung aufweist, deren Boden in Richtung zum Garraum geneigt ist und dass die Injektordüse bzw. Injektordüsen an der dem Druckbereich des Umluftgebläses zugeordneten Stirnseite der kanalartigen Vertiefung angeordnet ist bzw. sind. Diese kanalartige Vertiefung kann entsprechend den Bedürfnissen in der Breite und der Tiefe gestaltet werden, um einen ausreichenden Kondensationsraum zu schaffen, wodurch zusätzliche Leitungen außerhalb vermieden werden.An advantageous structural embodiment results according to the invention in that the cooking chamber floor in the injector nozzle or injector nozzles has an outgoing from the pressure range of the fan chamber and extending into the cooking chamber channel-like recess whose bottom is inclined towards the cooking chamber and that the injector nozzle or Injector nozzles is arranged on the pressure region of the circulating air fan associated end face of the channel-like depression or are. This channel-like recess can be designed according to the needs in width and depth, to provide a sufficient condensation space, whereby additional lines outside are avoided.

Eine vorteilhafte Weiterbildung der Erfindung sieht vor, dass die Breite der Vertiefung etwa 20 bis 25 % der Gerätebodenbreite entspricht.An advantageous development of the invention provides that the width of the recess about 20 to 25 % of the device floor width.

Wenn ein verhältnismäßig langer Kondensationsraum und damit verhältnismäßig lange Spritzstrahlen benötigt werden, um die anfallende Dampfmenge zu kondensieren, kann zur Vergrößerung dieses Kondensationsraumes die Vertiefung ausgehend von dem Trennblech über einen Teil ihrer Länge durch einen Spritzschutz abgedeckt sein. Dieser Spritzschutz kann in Weiterbildung der Erfindung von Öffnungen durchbrochen sein, damit die, durch die Kondensation getrocknete Luft, in den Garraum auch schon vor Ende dieses Spritzschutzes eintreten kann.If a relatively long condensation space and thus relatively long spray jets are required to condense the amount of steam produced, to increase this condensation space, the depression can be covered starting from the separating plate over part of its length by a splash guard. This splash guard can be broken through openings in the invention, so that the dried by the condensation of air, in the cooking chamber can occur even before the end of this splash guard.

Je nachdem, welche Substanzen in dem Garraum behandelt werden, kann es vorteilhaft sein, wenn ein Geräteablauf an der tiefsten Stelle der Vertiefung vorgesehen ist. Diese Ausgestaltung eignet sich dann, wenn mit einem geringen Fettanfall gerechnet werden kann. Wenn dagegen größere Fettmengen anfallen, so ist es vorteilhaft, dass für das Wasser aus der Mischkondensation ein separater Ablauf vorgesehen ist.Depending on which substances are treated in the oven, it may be advantageous if a device drain is provided at the lowest point of the recess. This embodiment is suitable when it can be expected with a low amount of fat. If, on the other hand, larger amounts of fat are produced, then it is advantageous for the water from the mixed condensation to have a separate outlet.

Wenn in weiterer vorteilhafter Ausgestaltung der Erfindung der Garraum eine durch Unterdruckventil überwachte Einlassleitung für Umgebungsluft aufweist, so wird dabei erreicht, dass Umgebungsluft in den Garraum einströmt, wenn durch die Kondensation der Brüden ein Unterdruck entsteht. Hierdurch ist gewährleistet, dass nur die zur Entfeuchtung abgeführte Brüdenmenge durch frische Umgebungsluft ersetzt wird. Durch die erfindungsgemäße Beschränkung der zugeführten Umgebungsluft, entsprechend der volumenmäßigen Abnahme der Brüden, wird erreicht, dass nur der unbedingt notwendige Brüdenersatz stattfindet, so dass nur die unbedingt notwenige zugeführte Frischluft erwärmt werden muss, was den Energiehaushalt günstig beeinflusst. Als Unterdruckventil kann ein einfaches billiges federbelastetes Unterdruckventil verwendet werden.If, in a further advantageous embodiment of the invention, the cooking chamber has an intake pipe monitored by a vacuum valve for ambient air, it is thereby achieved that ambient air flows into the cooking chamber when a negative pressure results from the condensation of the vapors. This ensures that only the amount of vapor discharged for dehumidification is replaced by fresh ambient air. Due to the inventive restriction of the supplied ambient air, according to the volume decrease of the vapors, it is achieved that only the absolutely necessary vapor replacement takes place, so that only the absolutely necessary fresh air supplied must be heated, which has a favorable influence on the energy balance. As a vacuum valve, a simple cheap spring-loaded vacuum valve can be used.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles näher erläutert. In der Zeichnung zeigen:

Figur 1:
einen Schnitt durch eine Vorrichtung zur Behandlung von Nahrungsmitteln;
Figur 2:
eine schaubildliche Darstellung eines Gerätebodens der Vorrichtung nach Figur 1;
Figur 3:
einen vergrößerten Ausschnitt aus der Schnittdarstellung nach Figur 1 im unteren Bereich der Vorrichtung.
The invention will be explained in more detail with reference to an embodiment. In the drawing show:
FIG. 1:
a section through a device for the treatment of food;
FIG. 2:
a perspective view of a device bottom of the device according to FIG. 1 ;
FIG. 3:
an enlarged section of the sectional view FIG. 1 in the lower part of the device.

Innerhalb eines Gehäuses 1 einer Vorrichtung zur Wärmebehandlung von Substanzen, insbesondere Nahrungsmittel, das auch als Gargerät bezeichnet wird, ist ein Garraum 2 vorgesehen, in welchem diese Substanzen zur Behandlung untergebracht werden. Durch ein Trennblech 3 ist ein Gebläseraum 4 abgetrennt, in welchem ein Umluftgebläse 5 vorgesehen ist, das durch einen Motor 6 antreibbar ist. Das Umluftgebläse ist von einer Heizung 7 umgeben, die zur Erwärmung des Behandlungsmediums dient, welches über eine zentrale Öffnung 8 aus dem Garraum in den Gebläseraum eingesaugt wird. Das Trennblech 3 weist neben nicht dargestellten seitlichen Schlitzen an seinem oberen und seinem unteren Rand Spaltdurchlässe 9 und 10 auf, über die das Behandlungsmedium nach der Aufheizung durch die Heizung 7 wieder in den Garraum 2 hineinbefördert wird. Wie aus Figur 2 ersichtlich, ist im Gehäuseboden 11 eine kanalartige Vertiefung 12 vorgesehen, die sich ausgehend vom Druckbereich 13 des Gebläseraumes 4 in den Garraum erstreckt und dabei zum Garraum hingeneigt ist. An der tiefsten Stelle dieser kanalartigen Vertiefung ist ein Geräteablauf 14 vorgesehen. An der dem Spaltdurchlass 10 gegenüberliegenden Stirnseite 15 der kanalartigen Vertiefung 12 ist eine Injektordüse 16 angeordnet, die kaltes Wasser in Richtung der Pfeile 17 in die kanalartige Vertiefung 12 einsprüht und zwar im wesentlichen mit Gleichstrom mit der durch die Pfeile 18 angedeuteten Strömung des Behandlungsmediums. Das bei dieser Mischkondensation anfallende Wasser läuft am Ende der kanalartigen Vertiefung 12 auf deren Boden 19 zum Geräteablauf 14, der in einen Siffon 20 mündet, dessen Ablaufrohr mit 21 bezeichnet ist. Mit 22 ist ein Abluftrohr bezeichnet.Within a housing 1 of a device for heat treatment of substances, in particular food, which is also referred to as a cooking appliance, a cooking chamber 2 is provided, in which these substances are accommodated for treatment. By a separating plate 3, a fan chamber 4 is separated, in which a circulating air fan 5 is provided, which is driven by a motor 6. The circulation fan is surrounded by a heater 7, which serves to heat the treatment medium, which is sucked through a central opening 8 from the cooking chamber into the fan room. The separating plate 3 has not shown side slits at its upper and its lower edge gap passages 9 and 10, via which the treatment medium is conveyed into the cooking chamber 2 after heating by the heater 7 again. How out FIG. 2 can be seen, a channel-like recess 12 is provided in the housing bottom 11, which extends starting from the pressure region 13 of the fan chamber 4 in the cooking chamber and is thereby inclined to the cooking chamber. At the lowest point of this channel-like depression a device drain 14 is provided. An injector nozzle 16, which injects cold water in the direction of the arrows 17 into the channel-like recess 12, essentially with direct current with the flow of the treatment medium indicated by the arrows 18, is arranged on the end face 15 of the channel-like depression 12 opposite the gap passage 10. The resulting in this mixed condensation water runs at the end of the channel-like recess 12 on the bottom 19 to the device drain 14, which opens into a sipe 20, the drain pipe is designated 21. 22 denotes an exhaust pipe.

Wie aus Figur 3 ersichtlich, ist der Raum innerhalb der Vertiefung 12 als Kondensationswanne mit dem Bezugszeichen 23 bezeichnet, der durch einen Spritzschutz 24 in Form eines Bleches abgedeckt sein kann. Dieser Spritzschutz kann auch mit Öffnungen versehen sein, damit die bei der Kondensation vom Dampf befreite Luft bereits in diesem Bereich in den Garraum 2 entweichen kann. Um Umgebungsluft in den Garraum 2 einströmen zu lassen, wenn in diesem ein Unterdruck aufgrund einer Kondensationswirkung eintritt, ist im oberen Bereich des Garraumes eine durch ein Unterdruckventil 25 überwachte Einlassleitung 26 vorgesehen.How out FIG. 3 can be seen, the space within the recess 12 is referred to as a condensation tray with the reference numeral 23, which may be covered by a splash guard 24 in the form of a sheet. This splash guard can also be provided with openings, so that the freed from condensation in the condensation of air already in this area in the cooking chamber 2 can escape. In order to allow ambient air to flow into the cooking chamber 2, when a negative pressure due to a condensation effect occurs in this, an inlet line 26 monitored by a vacuum valve 25 is provided in the upper region of the cooking chamber.

Claims (8)

  1. A apparatus for heat-treatment of substances, more specifically of foods, with a cooking chamber (2) surrounded by a casing (1), a fan chamber (4) with an air circulation fan (5) separated from the cooking chamber (2) by a separating plate (3), but connected to it in terms of flow, an device for generating a treatment medium containing vapour inside the cooking chamber (2), a condensation device (16) for condensing the excess vapour as well as with isolation devices (20) in all conduits leading out of the cooking chamber (2), characterized in that the condensation device (16, 23) is configured as a co-condensation device extending from the pressure area (13) of the air circulation fan (5) into the cooking chamber (2), at least one injector nozzle (16) that is located in the immediate pressure area (13) of the air circulation fan (5), the jet direction (17) of which is oriented essentially in the direction of the flow (18) of the treatment medium, is provided for the co-condensation, wherein the injector nozzle (16) or nozzles are disposed on the wall of the fan chamber (13) opposite to the slot aperture (10) of the separating plate (3), with its jet direction (17) oriented onto the slot aperture (10) at the lower end of the separating plate (3).
  2. The apparatus according to claim 1, characterized in that the floor of the cooking chamber (11) has a duct-type depression extending from the pressure area (13) of the fan chamber (4) into the cooking chamber (2), the floor (19) of said depression being tilted in direction of the cooking chamber, and that the injector nozzle (16) or nozzles is or are disposed on the narrow side (15) of the duct-type depression (12) associated to the pressure area (13) of the air circulation fan (5).
  3. The apparatus according to claim 2, characterized in that the width of the depression (12) corresponds to approximately 20 to 25% of the width of the floor of the apparatus.
  4. The apparatus according to claim 2 or 3, characterized in that extending from the separating plate (3) the depression (12) is covered by a splash guard (24) over a part of its length.
  5. The apparatus according to claim 4, characterized in that the splash guard (24) is pierced by apertures.
  6. The apparatus according to one of the claims 2 to 5, characterized in that an outflow of the apparatus (14) is provided at the deepest place of the depression (12).
  7. The apparatus according to one of the claims 2 to 6, characterized in that a separate outflow is provided for the water of the co-condensation.
  8. The apparatus according to one of the claims 1 to 7, characterized in that the cooking chamber (2) has an inlet conduit (26) for ambient air controlled by a low pressure valve (25).
EP04007993A 2003-06-17 2004-04-01 Equipment for heat treatment of substances, especially foods Expired - Lifetime EP1488723B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10327282A DE10327282C5 (en) 2003-06-17 2003-06-17 Apparatus for the heat treatment of substances, in particular foodstuffs
DE10327282 2003-06-17

Publications (3)

Publication Number Publication Date
EP1488723A1 EP1488723A1 (en) 2004-12-22
EP1488723B1 EP1488723B1 (en) 2007-11-21
EP1488723B2 true EP1488723B2 (en) 2011-01-05

Family

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EP04007993A Expired - Lifetime EP1488723B2 (en) 2003-06-17 2004-04-01 Equipment for heat treatment of substances, especially foods

Country Status (5)

Country Link
US (1) US6995341B2 (en)
EP (1) EP1488723B2 (en)
JP (1) JP4789428B2 (en)
DE (2) DE10327282C5 (en)
ES (1) ES2232330T5 (en)

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US7307244B2 (en) * 2006-02-17 2007-12-11 Alto-Shaam, Inc. System and method for supplying water to an oven
ITRN20070028A1 (en) 2007-05-25 2008-11-26 Indesit Co Spa COOKING OVEN.
DE102007030573B4 (en) 2007-07-02 2017-05-18 Rational Ag Cooking appliance with at least one condensation device and method for dehumidifying a cooking chamber of such a cooking appliance
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
WO2009089381A2 (en) * 2008-01-09 2009-07-16 Unified Brands, Inc. Boilerless combination convection steamer oven
CN102334522A (en) * 2010-07-19 2012-02-01 新麦机械（无锡）有限公司 Steam system of hot air rotary furnace
GB2482331A (en) * 2010-07-30 2012-02-01 V Group Uk Ltd Oven for hot food delivery vehicles
US8997730B2 (en) * 2011-11-29 2015-04-07 Alto-Shaam, Inc. Grease handling apparatus for closed system oven
EP2791584B1 (en) 2011-12-13 2019-11-06 Convotherm Elektrogeräte GmbH System comprising a cleaning cartridge and an apparatus and method of cleaning a cavity
JP2015516561A (en) * 2012-03-28 2015-06-11 ビーイー・エアロスペース・インコーポレーテッド Vehicle oven with optimized water vapor injector
US9423139B2 (en) 2013-04-01 2016-08-23 Convotherm Elektrogeraete Gmbh Condensation management system and method
EP2961278B1 (en) * 2014-03-12 2019-03-06 Convotherm-Elektrogeräte GmbH Cooking device comprising a steam sensor and process for operating the same
DE102016215650A1 (en) * 2016-08-19 2018-02-22 BSH Hausgeräte GmbH Haushaltsgargerät
CN106724880A (en) * 2016-12-23 2017-05-31 宁波方太厨具有限公司 Recycling of condensed steam mechanism and steam cooking equipment using have a mechanism
US11333364B2 (en) * 2018-04-05 2022-05-17 Rockwell Collins, Inc. Adaptive cooking system
DE102020125514A1 (en) 2020-09-30 2022-03-31 Miele & Cie. Kg Cooking appliance, comprising a cooking chamber with a condensate collection channel
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Also Published As

Publication number Publication date
JP2005009850A (en) 2005-01-13
JP4789428B2 (en) 2011-10-12
EP1488723A1 (en) 2004-12-22
US6995341B2 (en) 2006-02-07
DE10327282B3 (en) 2004-10-21
DE502004005547D1 (en) 2008-01-03
ES2232330T5 (en) 2011-05-19
ES2232330T1 (en) 2005-06-01
ES2232330T3 (en) 2008-05-01
US20040256374A1 (en) 2004-12-23
EP1488723B1 (en) 2007-11-21
DE10327282C5 (en) 2008-03-06

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