EP2199711A2 - Method and device for cooling meals in a multi-layer tray trolley - Google Patents

Method and device for cooling meals in a multi-layer tray trolley Download PDF

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Publication number
EP2199711A2
EP2199711A2 EP09015758A EP09015758A EP2199711A2 EP 2199711 A2 EP2199711 A2 EP 2199711A2 EP 09015758 A EP09015758 A EP 09015758A EP 09015758 A EP09015758 A EP 09015758A EP 2199711 A2 EP2199711 A2 EP 2199711A2
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EP
European Patent Office
Prior art keywords
suction channel
space
temperature
rear wall
cooling
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Granted
Application number
EP09015758A
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German (de)
French (fr)
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EP2199711A3 (en
EP2199711B1 (en
Inventor
Helmut Dipl.-Ing. Schumacher
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Individual
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Individual
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Priority to DE202009017842U priority Critical patent/DE202009017842U1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/005—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces in cold rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0651—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the bottom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
    • F25D2317/0671—Inlet ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/20—Carts specially adapted for transporting objects to be cooled

Definitions

  • a refrigerator for keeping a multi-ply dolly cool.
  • the refrigerator has a cooling space for receiving the trolley, which is bounded by a rear wall, side walls and a ceiling surface and has an open front. Adjacent to the rear wall is a flow space communicating with cavities in the side walls.
  • a fan and a cooling device are arranged in the rear flow space.
  • a cooling air circuit is created, with the cooling air exiting through openings in one of the side walls, flowing through the cooling chamber in a plurality of planes substantially horizontally, and thus re-suctioning openings in the opposite side wall.
  • the ventilation guide is not yet fully satisfactory.
  • a particular disadvantage is that the Lvidströme come into contact with the bottom surface of the temperature-controlled space, which may be contaminated by the retraction and extension of the trolley.
  • Out DE 19 00 048 is a refrigerated display case for sales rooms known in the trolley can be parked with goods to be cooled.
  • a device is provided with a suction channel arranged on the bottom side, which uses a space available below a trolley between its rollers and extends from a front side of the room to a rear wall of the room.
  • the suction channel has on the front side an intake opening for an air flow and adjoins at its rear end to a connection equipped with a blower port in the rear wall of the room.
  • the suction channel connects to a front wall of the refrigerated display case, which extends over the entire width of the refrigerated display case and contains an air collecting space with top-side air openings.
  • the invention has for its object to provide a device for air guidance, with which it is possible to effectively temper the entire room without the air flow comes into contact with surfaces that are polluted by the retraction and extension of the trolley can or can not be cleaned well.
  • the suction channel expediently has a rectangular flow cross-section and extends with constant width and constant height from the front side to the rear wall of the temperature-controlled space.
  • the suction channel can be removed from the tempered room for cleaning purposes and is preferably made as a sheet metal body of a stainless steel sheet.
  • the floor rails are preferably made of U-profiles and are fixed or releasably secured in the tempered room.
  • a refrigerator is shown with a drivable tempered room 1 for a multi-day trolley.
  • the temperature-controlled room 1 is also referred to below as a cooling room.
  • the trolley 2 is an open trolley, which has several floors for trays.
  • the refrigerator 1 of the refrigerator is limited by a rear wall 7, side walls 8 and a ceiling surface at the top and has an open or provided with a door front 10.
  • a functional space 3 through which the cooling air flows, which is equipped with a cooling device 5.
  • a blower 6 is provided, which is arranged in a connection opening in the rear wall.
  • a plurality of superposed openings 4 are provided, from which escape cooling air streams 11, which flow through a parked in the refrigerator trolley 2 in several levels substantially horizontally. The flowing through the opening 4 in the cooling chamber 1 cooling air streams 11 are directed from the back of the refrigerator forward to the open front 10 and are there sucked on the bottom side.
  • the fan 6 or an arrangement of a plurality of juxtaposed blowers is at the rear end of the suction channel 14 in a connection opening in the rear wall 7 of the cooling chamber 1 is arranged.
  • bottom rails 19 are arranged for the rollers 16 of the trolley 2. Through the suction channel 14 is ensured that the circulated cooling air does not come into contact with surfaces which are contaminated by the rollers 16 of the trolley 2.
  • Fig. 2 shows that the bottom of the suction channel 14 is formed as a collecting tray 17 for condensed water, which extends through an opening in the rear wall 7 of the cooling chamber 1 into the rear-side functional space 3.
  • the protruding into the cooling chamber 1 part of the drip pan 17 is covered with a plate 18 and thereby separated from the flow of cooling air through the part of the suction channel 14.
  • the plate 18 is fixedly connected to the suction channel 14 and welded, for example, with the suction channel.
  • the arranged on both sides of the suction channel floor rails 19 are made of U-profiles, which are fixed fixed or detachably in the cooling chamber 1 expediently.
  • each trolley in this case is associated with a device according to the invention for air guidance with a suction channel and bottom rails arranged on both sides.
  • the device according to the invention is also generally suitable for tempered rooms, which are flowed through for the purpose of heating hot air streams.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Handcart (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cleaning In General (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The device has a vacuum channel (14) extending a front side (10) of a cooling chamber (1) to a rear wall (7) of the cooling chamber. The vacuum channel includes an air suction opening (15) arranged at the front side of the cooling chamber. A rearward end of the vacuum channel is adjoined to a connection opening, which is provided with a compressor (6), in the rear wall of the cooling chamber. The suction opening is arranged at an upper side of the vacuum channel, and extends over entire width of the vacuum channel.

Description

Die Erfindung betrifft eine Vorrichtung zur Luftführung in einem temperierten Raum für einen mehretagigen Transportwagen. Bei dem temperierten Raum handelt es sich insbesondere um einen Kühlraum in einem Kühlschrank, in dem zumindest ein Transportwagen abgestellt werden kann. Unter den Begriff "Transportwagen" fallen insbesondere offene Hordenwagen, die mehrere Etagen für Tabletts aufweisen, sowie offene Etagenwagen mit Fachböden. Der in dem temperierten Raum abgestellte Transportwagen wird von temperierten horizontalen Luftströmen durchströmt, die durch wandseitige Öffnungen in den Raum einströmen, wieder abgesaugt und im Kreis geführt werden.The invention relates to a device for guiding air in a tempered room for a multi-ply transport cart. The tempered room is in particular a refrigerator in a refrigerator in which at least one trolley can be parked. The term "trolley" in particular fall open trolley, which have several floors for trays, and open shelves with shelves. The parked in the tempered room trolley is flowed through by tempered horizontal air streams, which flow through wall-side openings in the room, sucked out again and be circulated.

Bei der Speisenportionierung in Großküchen werden u. a. fahrbare, mehretagige Transportwagen eingesetzt. Sie werden mit Tabletts und darauf bereitgestellten Speisenverteilkomponenten, z. B. Geschirrteilen, sowie Speisen aus einem Kühlhaus zu Speiseausgabestellen bzw. Speiseverteilstationen gefahren. Dabei darf die Kühlkette nicht unterbrochen werden und muss sichergestellt werden, dass sich die auf den Tabletts bereitgestellten Speisenverteilkomponenten und Speisen nicht unzulässig erwärmen. Die Speisen müssen auch nach dem Verlassen des Kühlhauses kalt gehalten werden. In Fällen, in denen sie sich während des Transportes innerhalb zulässiger Grenzen erwärmt haben, müssen sie wieder auf einen angestrebten Temperaturbereich von beispielsweise weniger als 4° C zurückgekühlt werden. Zu diesem Zweck werden die Transportwagen in Kühlschränken abgestellt, die an den Speiseverteilstationen bereitgehalten werden und einen Kühlraum aufweisen, in den ein mehretagiger Transportwagen hinein geschoben werden kann.In the food portioning in commercial kitchens, among other things, mobile, multi-ply transport trolleys are used. They are provided with trays and food distribution components provided thereon, e.g. B. dishes, as well as food from a cold store to dining outlets or Speiseverteilstationen driven. The cooling chain must not be interrupted and it must be ensured that the food distribution components and food provided on the trays do not heat up unacceptably. The food must be kept cold even after leaving the cold store. In cases where they have warmed within permissible limits during transport, they must be cooled back to a desired temperature range, for example, less than 4 ° C. For this purpose, the trolleys are parked in refrigerators, which are kept ready at the Speiseverteilstationen and have a refrigerator in which a multi-day trolley can be pushed into it.

Aus DE 10 2006 044 844 A1 ist ein Kühlschrank zum Kühlhalten eines mehretagigen Transportwagens bekannt. Der Kühlschrank weist einen Kühlraum zur Aufnahme des Transportwagens auf, der von einer Rückwand, Seitenwänden sowie einer Deckenfläche begrenzt ist und eine offene Frontseite aufweist. An die Rückwand grenzt ein Strömungsraum an, der mit Hohlräumen in den Seitenwänden in Verbindung steht. In dem rückseitigen Strömungsraum sind ein Gebläse sowie eine Kühleinrichtung angeordnet. Es wird ein Kühlluftkreislauf erzeugt, wobei die Kühlluft durch Öffnungen in einer der Seitenwände austreten, den Kühlraum in mehreren Ebenen im Wesentlichen horizontal durchströmen und wodurch Öffnungen in der gegenüberliegenden Seitenwand wieder angesaugt werden. Die Lüftführung ist noch nicht in vollem Umfang zufrieden stellend. Nachteilig ist insbesondere, dass die Lüftströme mit der Bodenfläche des temperierten Raumes in Berührung kommen, die durch das Ein- und Ausfahren der Transportwagen verschmutzt sein kann.Out DE 10 2006 044 844 A1 For example, a refrigerator is known for keeping a multi-ply dolly cool. The refrigerator has a cooling space for receiving the trolley, which is bounded by a rear wall, side walls and a ceiling surface and has an open front. Adjacent to the rear wall is a flow space communicating with cavities in the side walls. In the rear flow space, a fan and a cooling device are arranged. A cooling air circuit is created, with the cooling air exiting through openings in one of the side walls, flowing through the cooling chamber in a plurality of planes substantially horizontally, and thus re-suctioning openings in the opposite side wall. The ventilation guide is not yet fully satisfactory. A particular disadvantage is that the Lüftströme come into contact with the bottom surface of the temperature-controlled space, which may be contaminated by the retraction and extension of the trolley.

Aus DE 19 00 048 ist eine Kühlvitrine für Verkaufsräume bekannt, in der Transportwagen mit zu kühlenden Waren abgestellt werden können. Zur Luftführung der Kühlluft ist eine Vorrichtung vorgesehen mit einem bodenseitig angeordneten Saugkanal, der einen unterhalb eines Transportwagen zwischen dessen Laufrollen zur Verfügung stehenden Platz nutzt und sich von einer Frontseite des Raums bis zu einer Rückwand des Raums erstreckt. Der Saugkanal weist an der Frontseite eine Ansaugöffnung für einen Luftstrom auf und grenzt an seinem rückwärtigen Ende an eine mit einem Gebläse ausgestattete Anschlussöffnung in der Rückwand des Raumes an. Der Saugkanal schließt an eine Frontwand der Kühlvitrine an, die sich über die gesamte Breite der Kühlvitrine erstreckt und einen Luftsammelraum mit oberseitigen Luftöffnungen enthält. Die Frontwand der Kühlvitrine ist demontierbar und muss ausgebaut werden, wenn ein Transportwagen in den temperierten Raum abgestellt oder aus diesem wieder herausgefahren werden soll. Zur Kühlung von Transportwagen, die in der Speisenverteilung zum Beispiel im Großküchenbereich eingesetzt werden und mit auf Geschirrteilen angerichteten Speisen bestückt sind, ist die Kühlvitrine ungeeignet. Das Ein-und Ausbauen der Frontwand ist zweitaufwändig und umständlich. Insbesondere fühlt die Kühlvitrine auch nicht die Hygieneanforderungen, die bei einer Kühlung von offenen Speisen zu beachten sind, da der Strömungsraum innerhalb der Frontwand nicht oder nur schlecht gereinigt werden kann.Out DE 19 00 048 is a refrigerated display case for sales rooms known in the trolley can be parked with goods to be cooled. For air guidance of the cooling air, a device is provided with a suction channel arranged on the bottom side, which uses a space available below a trolley between its rollers and extends from a front side of the room to a rear wall of the room. The suction channel has on the front side an intake opening for an air flow and adjoins at its rear end to a connection equipped with a blower port in the rear wall of the room. The suction channel connects to a front wall of the refrigerated display case, which extends over the entire width of the refrigerated display case and contains an air collecting space with top-side air openings. The front wall of the refrigerated display case can be dismantled and must be removed if a trolley is parked in the tempered room or moved out of it again should. To cool trolleys, which are used in the food distribution, for example in the commercial kitchen area and are equipped with food prepared on dishes, the refrigerated display case is unsuitable. The installation and removal of the front wall is secondarily complicated and cumbersome. In particular, the refrigerated display does not feel the hygiene requirements that must be considered in an open-food cooling, since the flow space within the front wall can not or only poorly cleaned.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zur Luftführung anzugeben, mit der es möglich ist, den gesamten Raum wirksam zu temperieren, ohne dass die Luftströmung mit Flächen in Kontakt kommt, die durch das Ein- und Ausfahren des Transportwagens verschmutzt sein können oder sich schlecht reinigen lassen.Against this background, the invention has for its object to provide a device for air guidance, with which it is possible to effectively temper the entire room without the air flow comes into contact with surfaces that are polluted by the retraction and extension of the trolley can or can not be cleaned well.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Vorrichtung zur Luftführung nach Anspruch 1. Die Vorrichtung umfasst einen bodenseitig angeordneten Saugkanal, der einen unterhalb des Transportwagens zwischen dessen Laufrollen zur Verfügung stehenden Platz nutzt und sich von einer Frontseite des Raumes bis zu einer Rückwand des Raumes erstreckt, an der Frontseite eine Ansaugöffnung für einen Luftstrom aufweist und an seinem rückwärtigen Ende an eine mit einem Gebläse ausgestattete Anschlussöffnung in der Rückwand des Raums angrenzt. Die Ansaugöffnung ist erfindungsgemäß an der Oberseite des Saugkanals angeordnet und erstreckt sich im Wesentlichen über die gesamte Breite des Saugkanals. Beim Einfahren des Transportwagens in den temperierten Raum und beim Ausfahren bewegt sich der Transportwagen auf Bodenflächen beidseits des Saugkanals, die auch als Bodenschienen ausgebildet sein können.The device comprises a suction channel arranged on the bottom side, which uses a space available below the trolley between the rollers and from a front side of the room to a rear wall of the room extends, on the front side has a suction port for an air flow and adjacent at its rear end to a connection equipped with a blower port in the rear wall of the room. The suction opening is arranged according to the invention at the top of the suction channel and extends substantially over the entire width of the suction channel. When retracting the trolley in the temperature-controlled room and when extending the trolley moves on bottom surfaces on both sides of the suction channel, which can also be designed as floor rails.

Durch die erfindungsgemäße Anordnung ist die Ansaugstelle zur Frontseite des temperierten Raumes verlagert, so dass horizontale Luftströme, die durch wandseitige Öffnungen, insbesondere durch Öffnungen in der Rückwand, in den Raum eintreten und die Etagen zwischen den Tabletts eines mehretagigen Transportwagens durchströmen, erst an der Frontseite nach unten umgelenkt werden. Dadurch ist eine wirksame Temperierung des gesamten Raumes von der Rückseite bis zur Frontseite gewährleistet. Obwohl der Luftstrom bodenseitig abgesaugt wird, ist durch die erfindungsgemäße Ausgestaltung ferner sichergestellt, dass die temperierte Luft nicht mit einer Fläche in Kontakt kommt, die durch das Ein- und Ausfahren des Transportwagens verschmutzt ist. Der Luftstrom kann daher umgewälzt werden, ohne dass auf Dauer die Gefahr einer Kontaminierung des Luftstromes besteht.The inventive arrangement, the suction is displaced to the front of the temperature-controlled space, so that horizontal air currents entering through the wall-side openings, in particular through openings in the rear wall, in the room and flow through the floors between the trays of a multi-ply trolley, only on the front page be deflected downwards. This ensures effective temperature control of the entire room from the back to the front. Although the air flow is sucked on the bottom side, it is further ensured by the inventive design that the tempered air does not come into contact with a surface that is contaminated by the retraction and extension of the trolley. The air flow can therefore be circulated without the risk of contamination of the air flow is permanent.

Der Saugkanal weist zweckmäßig einen rechteckförmigen Strömungsquerschnitt auf und erstreckt sich mit konstanter Breite und konstanter Höhe von der Frontseite bis zur Rückwand des temperierten Raumes. Der Saugkanal kann aus dem temperierten Raum zu Reinigungszwecken herausgenommen werden und wird vorzugsweise als Blechkörper aus einem rostfreien Stahlblech gefertigt.The suction channel expediently has a rectangular flow cross-section and extends with constant width and constant height from the front side to the rear wall of the temperature-controlled space. The suction channel can be removed from the tempered room for cleaning purposes and is preferably made as a sheet metal body of a stainless steel sheet.

Wenn die erfindungsgemäße Vorrichtung für einen befahrbaren Kühlraum eines Kühlschrankes bestimmt ist, ist der Boden des Saugkanals vorzugsweise als Auffangwanne für Kondenswasser ausgebildet, die sich durch eine Öffnung in der Rückwand des temperierten Raumes bis in einen mit Kühlflächen ausgestatteten Funktionsraum an der Rückseite des temperierten Raumes erstreckt. Aus hygienischen Gründen ist dabei der in den temperierten Raum ragende Teil der Auffangwanne mit einer Platte abgedeckt und auf diese Weise von dem von einem Luftstrom durchströmten Teil des Saugkanals getrennt. Die Kühlflächen im Funktionsraum sind Teil einer Kühleinrichtung. Diese kann aus einem Verdampfer bestehen, der an eine externe Kältemaschine anschließbar ist oder mit einer in den Kühlschrank integrierten Kältemaschine verbunden ist.If the device according to the invention is intended for a passable cold room of a refrigerator, the bottom of the suction channel is preferably designed as a collecting trough for condensed water, which extends through an opening in the rear wall of the tempered room to a functional space equipped with cooling surfaces at the back of the tempered room , For reasons of hygiene, the part of the collecting trough projecting into the temperature-controlled space is covered with a plate and thus separated from the part of the suction channel through which an air flow flows. The cooling surfaces in the functional space are part of a cooling device. This can be out consist of an evaporator, which is connected to an external refrigerator or connected to a refrigerator integrated in the refrigerator.

Beidseits des Saugkanals sind zweckmäßig Bodenschienen vorgesehen, welche die Räder oder Rollen eines Transportwagens beim Einfahren in den temperierten Raum bzw. Ausfahren aus dem temperierten Raum führen. Die Bodenschienen bestehen vorzugsweise aus U-Profilen und sind in dem temperierten Raum fest oder lösbar befestigt.On both sides of the suction channel bottom rails are expediently provided, which guide the wheels or rollers of a trolley when entering the tempered room or extending out of the temperature-controlled space. The floor rails are preferably made of U-profiles and are fixed or releasably secured in the tempered room.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels erläutert. Es zeigen schematisch:

Fig. 1
eine perspektivische Darstellung eines Kühlschrankes mit einem befahrbaren Kühlraum für einen mehretagigen Transportwagen,
Fig. 2
ausschnittsweise einen Längsschnitt durch den Gegenstand der Fig. 1 in der Schnittebene A-A aus Fig. 1 mit einer erfindungsgemäßen Vorrichtung zur Luftführung,
Fig. 3
einen Saugkanal als wesentlichen Bestandteil der erfindungsge- mäßen Vorrichtung zur Luftführung in einer perspektivischen Dar- stellung.
In the following the invention will be explained with reference to an embodiment. They show schematically:
Fig. 1
a perspective view of a refrigerator with a passable refrigerator for a multi-ply dolly,
Fig. 2
partially a longitudinal section through the subject of the Fig. 1 in the section plane AA Fig. 1 with a device according to the invention for air guidance,
Fig. 3
a suction channel as an essential part of the device according to the invention for air guidance in a perspective view.

In Fig. 1 ist ein Kühlschrank mit einem befahrbaren temperierten Raum 1 für einen mehretagigen Transportwagen dargestellt. Der temperierte Raum 1 wird im Folgenden auch als Kühlraum bezeichnet. Bei dem Transportwagen 2 handelt es sich um einen offenen Hordenwagen, der mehrere Etagen für Tabletts aufweist.In Fig. 1 a refrigerator is shown with a drivable tempered room 1 for a multi-day trolley. The temperature-controlled room 1 is also referred to below as a cooling room. The trolley 2 is an open trolley, which has several floors for trays.

Der Kühlraum 1 des Kühlschrankes ist von einer Rückwand 7, Seitenwänden 8 und einer Deckenfläche an der Oberseite begrenzt und weist eine offene oder mit einer Tür versehene Frontseite 10 auf. An der Rückseite des Kühlraumes 1 schließt ein von der Kühlluft durchströmter Funktionsraum 3 an, der mit einer Kühleinrichtung 5 ausgestattet ist. Zum Umwälzen der Kühlluft ist ein Gebläse 6 vorgesehen, das in einer Anschlussöffnung in der Rückwand angeordnet ist. In der Rückwand 7 des Kühlraumes 1 sind eine Mehrzahl von übereinander angeordneten Öffnungen 4 vorgesehen, aus denen Kühlluftströme 11 austreten, die einen in dem Kühlraum abgestellten Transportwagen 2 in mehreren Ebenen im Wesentlichen horizontal durchströmen. Die durch die Öffnung 4 in den Kühlraum 1 einströmenden Kühlluftströme 11 sind von der Rückseite des Kühlraumes nach vorne zur offenen Frontseite 10 gerichtet und werden dort bodenseitig abgesaugt.The refrigerator 1 of the refrigerator is limited by a rear wall 7, side walls 8 and a ceiling surface at the top and has an open or provided with a door front 10. At the rear of the cooling chamber 1 is followed by a functional space 3 through which the cooling air flows, which is equipped with a cooling device 5. For circulating the cooling air, a blower 6 is provided, which is arranged in a connection opening in the rear wall. In the rear wall 7 of the cooling chamber 1, a plurality of superposed openings 4 are provided, from which escape cooling air streams 11, which flow through a parked in the refrigerator trolley 2 in several levels substantially horizontally. The flowing through the opening 4 in the cooling chamber 1 cooling air streams 11 are directed from the back of the refrigerator forward to the open front 10 and are there sucked on the bottom side.

Den Darstellungen in den Fig. 1 und 2 ist zu entnehmen, dass zum Absaugen der Kühlluft ein Saugkanal 14 vorgesehen ist, der an der Frontseite 10 endet und dort eine Ansaugöffnung 15 für die den Kühlraum 1 durchströmenden Luftströme aufweist. Der Saugkanal 14 ist bodenseitig angeordnet und erstreckt sich von der Frontseite 10 zur Rückwand 7 des Kühlraumes 1, wobei der Saugkanal 14 einen unterhalb des Transportwagens 2 zwischen dessen beidseitigen Laufrollen 16 zur Verfügung stehenden Platz nutzt. Die Ansaugöffnung 15 des Saugkanals 14 ist vorzugsweise an der Oberseite des Saugkanals 14 angeordnet und erstreckt sich im Wesentlichen über die gesamte Breite des Saugkanals 14. Das Gebläse 6 oder eine Anordnung aus mehreren nebeneinander angeordneten Gebläsen ist am rückwärtigen Ende des Saugkanals 14 in einer Anschlussöffnung in der Rückwand 7 des Kühlraumes 1 angeordnet. Beidseits des Saugkanals 14 sind Bodenschienen 19 für die Laufrollen 16 des Transportwagens 2 angeordnet. Durch den Saugkanal 14 ist sichergestellt, dass die umgewälzte Kühlluft nicht mit Flächen, die von den Laufrollen 16 des Transportwagens 2 verschmutzt werden, in Berührung kommt.The representations in the Fig. 1 and 2 It can be seen that for sucking off the cooling air, a suction channel 14 is provided, which ends at the front side 10 and there has a suction port 15 for the cooling space 1 flowing through the air streams. The suction channel 14 is arranged on the bottom side and extends from the front side 10 to the rear wall 7 of the cooling space 1, wherein the suction channel 14 uses a below the trolley 2 between the two-sided rollers 16 space available. The suction opening 15 of the suction channel 14 is preferably arranged on the upper side of the suction channel 14 and extends substantially over the entire width of the suction channel 14. The fan 6 or an arrangement of a plurality of juxtaposed blowers is at the rear end of the suction channel 14 in a connection opening in the rear wall 7 of the cooling chamber 1 is arranged. On both sides of the suction channel 14 bottom rails 19 are arranged for the rollers 16 of the trolley 2. Through the suction channel 14 is ensured that the circulated cooling air does not come into contact with surfaces which are contaminated by the rollers 16 of the trolley 2.

Der Saugkanal 14 weist einen rechteckförmigen Strömungsquerschnitt auf und erstreckt sich mit konstanter Breite und konstanter Höhe von der Frontseite 10 bis zur Rückwand 7 des Kühlraumes. Er ist vorzugsweise als Blechkörper aus rostfreiem Stahlblech gefertigt und kann zu Reinigungszwecken aus dem Kühlraum 1 herausgenommen werden.The suction channel 14 has a rectangular flow cross-section and extends with constant width and constant height from the front side 10 to the rear wall 7 of the cooling space. It is preferably made as sheet metal body made of stainless steel sheet and can be removed for cleaning purposes from the refrigerator 1.

Insbesondere aus Fig. 2 geht hervor, dass der Boden des Saugkanals 14 als Auffangwanne 17 für Kondenswasser ausgebildet ist, die sich durch eine Öffnung in der Rückwand 7 des Kühlraumes 1 bis in den rückseitigen Funktionsraum 3 erstreckt. Der in den Kühlraum 1 ragende Teil der Auffangwanne 17 ist mit einer Platte 18 abgedeckt und dadurch von dem von Kühlluft durchströmten Teil des Saugkanals 14 getrennt. Die Platte 18 ist fest mit dem Saugkanal 14 verbunden und beispielsweise mit dem Saugkanal verschweißt.In particular from Fig. 2 shows that the bottom of the suction channel 14 is formed as a collecting tray 17 for condensed water, which extends through an opening in the rear wall 7 of the cooling chamber 1 into the rear-side functional space 3. The protruding into the cooling chamber 1 part of the drip pan 17 is covered with a plate 18 and thereby separated from the flow of cooling air through the part of the suction channel 14. The plate 18 is fixedly connected to the suction channel 14 and welded, for example, with the suction channel.

Die beidseits des Saugkanals angeordneten Bodenschienen 19 bestehen aus U-Profilen, die zweckmäßig fest oder lösbar im Kühlraum 1 befestigt sind.The arranged on both sides of the suction channel floor rails 19 are made of U-profiles, which are fixed fixed or detachably in the cooling chamber 1 expediently.

Im Rahmen der Erfindung liegt es, den Kühlraum so zu dimensionieren, dass zwei oder eine Mehrzahl von Transportwagen nebeneinander abgestellt werden können. Jedem Transportwagen ist in diesem Fall eine erfindungsgemäße Vorrichtung zur Luftführung mit einem Saugkanal und beidseitig angeordneten Bodenschienen zugeordnet.In the context of the invention is to dimension the refrigerator so that two or a plurality of trolleys can be parked side by side. Each trolley in this case is associated with a device according to the invention for air guidance with a suction channel and bottom rails arranged on both sides.

Die erfindungsgemäße Vorrichtung ist ferner grundsätzlich auch für temperierte Räume geeignet, die zum Zwecke der Beheizung von heißen Luftströmen durchströmt werden.The device according to the invention is also generally suitable for tempered rooms, which are flowed through for the purpose of heating hot air streams.

Claims (8)

Vorrichtung zur Luftführung in einem temperierten Raum (1) für einen mehretagigen Transportwagen (2) mit einem bodenseitig angeordneten Saugkanal (14), der einen unterhalb des Transportwagens (2) zwischen dessen Laufrollen (16) zur Verfügung stehenden Platz nutzt und sich von einer Frontseite (10) des Raumes bis zu einer Rückwand (7) des Raumes erstreckt, wobei der Saugkanal (14) an der Frontseite (10) eine Ansaugöffnung (15) für einen Luftstrom aufweist und an seinem rückwärtigen Ende an eine mit einem Gebläse (6) ausgestattete Anschlussöffnung in der Rückwand (7) des Raumes (1) angrenzt, dadurch gekennzeichnet, dass die Ansaugöffnung (15) an der Oberseite des Saugkanals (14) angeordnet ist und sich im Wesentlichen über die gesamte Breite des Saugkanals (14) erstreckt.Device for guiding air in a temperature-controlled space (1) for a multi-ply transport carriage (2) with a suction channel (14) arranged on the bottom, which uses a space available below the transport carriage (2) between its rollers (16) and from a front side (10) of the space to a rear wall (7) of the space, wherein the suction channel (14) on the front side (10) has an intake opening (15) for an air flow and at its rear end to one with a blower (6) equipped connection opening in the rear wall (7) of the space (1) adjacent, characterized in that the suction opening (15) is arranged on the upper side of the suction channel (14) and extends substantially over the entire width of the suction channel (14). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Saugkanal (14) einen rechteckförmigen Strömungsquerschnitt aufweist und sich mit konstanter Breite und konstanter Höhe von der Frontseite (10) bis zur Rückwand (1) des temperierten Raumes erstreckt.Apparatus according to claim 1, characterized in that the suction channel (14) has a rectangular flow cross-section and extends with a constant width and constant height from the front side (10) to the rear wall (1) of the temperature-controlled space. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Saugkanal (14) als Blechkörper aus einem rostfreien Stahlblech gefertigt ist.Apparatus according to claim 1 or 2, characterized in that the suction channel (14) is made as a sheet metal body of a stainless steel sheet. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Boden des Saugkanals (14) als Auffangwanne (17) für Kondenswasser ausgebildet ist, die sich durch eine Öffnung in der Rückwand (7) des temperierten Raumes (1) bis in einen mit Kühlflächen ausgestatteten Funktionsraum (3) an der Rückseite des temperierten Raumes (1) erstreckt, und dass der in den temperierten Raum (1) ragende Teil der Auffangwanne (17) mit einer Platte (18) abgedeckt und dadurch von dem durch einen Luftstrom durchströmten Teil des Saugkanals (14) getrennt ist.Device according to one of claims 1 to 3, characterized in that the bottom of the suction channel (14) is designed as a collecting trough (17) for condensed water extending through an opening in the rear wall (7) of the temperature-controlled space (1) into a Functional space (3) equipped with cooling surfaces extends at the rear of the temperature-controlled space (1), and that the part of the collecting trough (17) projecting into the tempered space (1) is covered with a plate (18) and thereby flowed through by an air flow Part of the suction channel (14) is disconnected. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Platte (18) fest mit dem Saugkanal (14) verbunden ist.Apparatus according to claim 4, characterized in that the plate (18) is fixedly connected to the suction channel (14). Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Saugkanal (14) zu Reinigungszwecken und gegebenenfalls zur Entleerung der Auffangwanne aus dem temperierten Raum (1) herausgenommen werden kann.Device according to one of claims 1 to 5, characterized in that the suction channel (14) for cleaning purposes and, where appropriate, for emptying the collecting trough from the temperature-controlled space (1) can be removed. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass beidseits des Saugkanals (14) Bodenschienen (19) für die Laufrollen (16) des Transportwagens (2) angeordnet sind.Device according to one of claims 1 to 6, characterized in that on both sides of the suction channel (14) bottom rails (19) for the rollers (16) of the transport carriage (2) are arranged. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Bodenschienen (19) aus U-Profilen bestehen, die im temperierten Raum (1) fest oder lösbar befestigt sind.Device according to one of claims 1 to 7, characterized in that the bottom rails (19) consist of U-profiles, which are fixed or releasably secured in the temperature-controlled space (1).
EP09015758.7A 2008-12-22 2009-12-19 Tempered space with device for air circulation for cooling meals in a multi-layer tray trolley Active EP2199711B1 (en)

Priority Applications (1)

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DE202009017842U DE202009017842U1 (en) 2008-12-22 2009-12-19 Device for guiding air in a tempered room for a multi-ply transport cart

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DE102008064215 2008-12-22
DE102009011733A DE102009011733B4 (en) 2008-12-22 2009-03-09 Device for guiding air in a tempered room for a multi-ply transport cart

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EP2199711A3 EP2199711A3 (en) 2014-07-30
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DE202009017842U1 (en) 2010-06-10
EP2199711A3 (en) 2014-07-30
DE102009011733B4 (en) 2011-12-22
DE102009011733A1 (en) 2010-07-01
EP2199711B1 (en) 2019-07-17

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