DE1501260A1 - Fridge - Google Patents

Fridge

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Publication number
DE1501260A1
DE1501260A1 DE19661501260 DE1501260A DE1501260A1 DE 1501260 A1 DE1501260 A1 DE 1501260A1 DE 19661501260 DE19661501260 DE 19661501260 DE 1501260 A DE1501260 A DE 1501260A DE 1501260 A1 DE1501260 A1 DE 1501260A1
Authority
DE
Germany
Prior art keywords
air
control channel
compartment
outlet
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19661501260
Other languages
German (de)
Inventor
Akis Haldopoulos
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of DE1501260A1 publication Critical patent/DE1501260A1/en
Pending legal-status Critical Current

Links

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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D2317/0653—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 mullion
    • 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
    • F25D2317/068—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 fans
    • F25D2317/0683—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 fans the fans not of the axial type
    • 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
    • F25D2400/04—Refrigerators with a horizontal mullion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/218—Means to regulate or vary operation of device
    • Y10T137/2202—By movable element
    • Y10T137/2218—Means [e.g., valve] in control input

Landscapes

  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Description

Firma GENERAL ELECTRIC COMPANY, 1 River Road. Schenectady, New York 12 305, N. Y. / USA GENERAL ELECTRIC COMPANY, 1 River Road. Schenectady, New York 12305, N.Y. / UNITED STATES

Kühlschrankrefrigerator

Die Erfindung betrifft einen Kühlschrank mit zumindest einem ersten und,einem zweiten Vorratsabteil, denen über eine Luftzufuhreinrichtung gekühlte Luft zugeführt wird.The invention relates to a refrigerator with at least a first and a second storage compartment, which above an air supply device is supplied with cooled air.

Sog. Kombinationskühlschränke, die zwei Yorratsabteile auf v/ei sen, welche bei verschiedenen Temperaturen betrieben werden und denen aus einer einzigen Quelle über Luftzuführeinrichtungen gekühlte Luft zugeführt wird, sind bekannt. Un die gewünschten Temperaturen in den beiden Abteilen aufrecht zu erhalten, ist es notwendig, die jedem der beiden Abteile jeweils zugeführte Luftmenge zu regeln und zuzumessen.So-called combination refrigerators, the two storage compartments on v / iron, which operated at different temperatures and to which cooled air is supplied from a single source via air supply devices are known. In order to maintain the desired temperatures in the two compartments, it is necessary that each of the to regulate and measure the amount of air supplied to both compartments.

Ziel der Erfindung ist es, einen Kühlschrank zu schaffen, bei dem diese Verteilung der gekühlten Luft auf die beiden Abteile in Abhängigkeit von den dort jeweils herrschenden Temperaturverhältnissen in besonders einfacher und wirkungsvoller V/eise zustande gebracht ist.The aim of the invention is to create a refrigerator in which this distribution of the cooled air between the two Compartments in a particularly simple and effective manner, depending on the temperature conditions prevailing there V / e has been brought about.

909844/0588909844/0588

Der Kühlschrank gemäß der Erfindung zeichnet sich dadurch aus, daß die Luftzufuhreinrichtung für die gekühlte Luft einen Strömungsverstärker enthält, der einen Haupteinlaß für die gekühlte Luft aufweist, und über einen ersten mit dem ersten Abteil sov/ie einen zweiten mit einem zweiten Abteil in Verbindung stehenden Auslaß verfügt und dem ein Steuerkanal zugeordnet ist, dessen Durchflußquerschnitt durch Steuermittel in Abhängigkeit von der Temperatur in einem der beiden Abteile zur Veränderung der Anteile der den einzelnen Abteilen zugeführten Ilenge gekühlter Luft drosselbar ist. Hierbei ist es ζ v/eckmäßig ,wenn der Strömungsverstärker derart ausgelegt ist, daß zumindest der größte Teil der Kühlluft, die über den Einlaß eintritt, bei einem Steuerkanal über den ersten Auslaß und bei geschlossenem Steuerkanal über den zweiten Auslaß abströmt. The refrigerator according to the invention is characterized in that the air supply device for the cooled air includes a flow amplifier having a main inlet for the cooled air, and via a first with the first compartment has a second outlet communicating with a second compartment and the one Control channel is assigned, the flow cross-section of which through control means as a function of the temperature cooled in one of the two compartments to change the proportions of the ilege supplied to the individual compartments Air can be throttled. Here it is ζ v / square if the flow amplifier is designed in such a way that at least most of the cooling air which enters via the inlet, in the case of a control channel via the first outlet and flows off via the second outlet when the control channel is closed.

909844/0588909844/0588

Zur Erleichterung des Verständnisses dient die Zeichnung, in deren Figur ein Haushaltkühlschrank im Ausschnitt sowie im axialen Schnitt dargestellt ist, in den die Erfindung angewandt ist.To facilitate understanding, the drawing serves, in the figure of which a household refrigerator in the cutout as well is shown in axial section in which the invention is applied.

In der Zeichnung ist ein Haushaltkühlschrank dargestellt, der isolierte Wandungen aufweist, die ein Gefrierabteil 1 umschließen, das unterhalb Gefriertemperatur betrieben wird, sowie ein Frischnahrungsmittelabteil 2 benrenzen, das bei einer oberhalb der Gefriertemperatur liependen Temperatur von beispielsweise 2 bis 5 ° C gehalten wird. Die beiden Abteile sind durch eine horizontale isolierende Trennwand 3 getrennt, die Ilittel zur Zufuhr fekühlter Luft zu den beiden Abteilen enthält, die eine Verdampferl-'amrner Ji umfassen, in der ein Verdampfer 5 angeordnet ist. ".'cn den beiden Abteilen 1 und 2 wird Luft durch die Kammer Ί mittels eines Gebläses 6 zur Zirkulation nebracht, das ebenfalls in der Trennwand 3 unterrebracht int. In einzelnen wird die Luft von dem Gefrierabteil 1 über einen Kanal p. abf-esaupt, der das Gefrierabteil mit dem einlaßseitiren Ende der i'.ammer '; verbindet und scdann in das Gefrierabteil durch einen Luftkanal 9 zurückreführt, während von dem Frischnahrun^smittelabteil 2 Luft über einer. Kanal IC abfesauft und gekühlte Luft diesem Abteil über einen weiteren Kanal 11 zugeführt viird. Ter Kühlschrank verfüft daneben über eine Kühlmittelkcndensationsrichtunr;, die einen Kompressor enthält, der flücDires Kühlmittel der.The drawing shows a household refrigerator that has insulated walls that enclose a freezer compartment 1, which is operated below freezing temperature, and a fresh food compartment 2, which is kept at a temperature of, for example, 2 to 5 ° C above the freezing temperature. The two compartments are separated by a horizontal insulating partition 3 which contains means for supplying cooled air to the two compartments, which comprise an evaporator chamber J i in which an evaporator 5 is arranged. ".'cn air is nebracht through the chamber Ί means of a blower 6 for circulating, the int unterrebracht also in the partition wall 3 the two compartments 1 and 2. In detail, the air from the freezer compartment 1 is p over a channel. abf-esaupt which connects the freezer compartment to the inlet end of the chamber and then returns it to the freezer compartment through an air duct 9, while the fresh food compartment 2 captures air via a duct IC and cooled air from this compartment via a further duct 11. The refrigerator also has a coolant condensation device, which contains a compressor, which flücDires the coolant of the.

Vercamrfer E r,uführt.Vercamrfer E r, leads.

90984W058890984W0588

Erfindungsgemäß wird die Zufuhr gekühlter Luft zu den beiden Abteilen 1 und 2 - und damit die darin herrschenden Temperaturen - durch einen Strömungsverstärker (fluid amplifier) gesteuert, der allgemein bei 14 angedeutet ist und der zwischen dem Gebläse 6 und den Kanälen 9, 11 in der Luftzufuhr-bzw. -zirkulationseinrichtung angeordnet ist. Der Strömungsverstärker weisfe einen Haupteinlaß 15 zur Aufnahme der von dem Auslaß des Gebläses 6 kommenden gekühlten Luft auf und verfügt über einen ersten oder Gefrierabteil-Auslaß 16, der mit dem Kanal 9 verbunden ist, sowie über einen zweiten oder Frischnahrungsmittel-Abteilauslaß 17» der an den Kanal 11 angeschlossen ist. Entsprechend den üblichen Strömungsverstärkern weist der Strömungsverstärker lh einen oder mehrere Steuerkanäle auf, um den Kühlluftstrom durch den einen oder den anderen Auslaßkanal l6 oder 17 zu leiten.According to the invention, the supply of cooled air to the two compartments 1 and 2 - and thus the temperatures prevailing therein - is controlled by a fluid amplifier, which is indicated generally at 14 and which is located between the fan 6 and the channels 9, 11 in FIG Air supply or. -circulation device is arranged. The flow intensifier has a main inlet 15 for receiving the cooled air coming from the outlet of the fan 6 and has a first or freezer compartment outlet 16 connected to duct 9 and a second or fresh food compartment outlet 17 ' the channel 11 is connected. Corresponding to the usual flow amplifiers, the flow amplifier lh has one or more control channels in order to guide the cooling air flow through one or the other outlet channel l6 or 17.

In dem dargestellten Ausführungsbeispiel der Erfindung ist ein erster Steuerkanal 19 vorgesehen, der mit dem Gefrierabteil in Verbindung steht, während ein zweiter Steuerkanal 20 in das Frischnahrungsmittelabteil 2 führt. Der Steuerkanal 19 bleibt ständig reöffnet, während der Steuerkanal 20 über eine zugeordnete Ventileinrichtung 21 verfügt, die zum öffnen oder Schließen des Steuerkanals 20 in Abhängigkeit einer Temperaturänderung in dem Frischnahrungsmittelabteil 2 bestimmt ist. Der Strömungsverstärker lh ist so ausgelegt, daß bei freier Luftströmung durch den Steuerkanal 20 die gesamte oder zumindest im wesentlichen die gesamte in denIn the illustrated embodiment of the invention, a first control channel 19 is provided which is connected to the freezer compartment, while a second control channel 20 leads into the fresh food compartment 2. The control channel 19 remains constantly reopened, while the control channel 20 has an associated valve device 21 which is intended to open or close the control channel 20 as a function of a temperature change in the fresh food compartment 2. The flow amplifier lh is designed so that with free air flow through the control channel 20, all or at least substantially all of the in the

Strcmunrsverstärker eintretende gekühlte Luft durch den 9 0 9 8 k k I 0 5 8 8 Cooled air entering the flow amplifier through the 9 0 9 8 kk I 0 5 8 8

Gefrierabteil-Auslaß l6 in das Gefrierabteil 1 gelangt. Ist der Steuerkanal 20 durch das Ventil 21 verschlossen, so strömt die gekühlte Luft ganz oder zumindest im wesentlichen ganz zu dem Frischnahrungsmittelabteilauslaß 17.Freezer compartment outlet l6 enters the freezer compartment 1. If the control channel 20 is closed by the valve 21, the cooled air flows completely or at least substantially all the way to fresh food compartment outlet 17.

Die Luftströmung durch den Steuerkanal 20 kann durch geeignete Mittel gesteuert werden, die in der Lage sind, die gewünschte Kühlung der beiden Abteile einzustellen. In dem dargestellten Ausführungsbeispiel ist ein Bimetallstreifen 22 in dem Abteil 2 vorgesehen, der das Ventil 21 in Abhängigkeit einer Temperaturänderung der in dem Frischnahrungsmittelabteil 2 enthaltenen Luft betätigt. Bewegt sich der Bimetallstreifen 22 im Sinne eines Verschlusses des •Steuerkanals 20, so wird der Luftstrom durch den Strömungsverstärker I1) ganz oder teilweise in den Frischnahrungsmittelabteilauslaß 17 umgeleitet. Der Steuerkanal 20 bleibt ganz oder zumindest im wesentlichen geschlossen, bis die Temperatur in dem Frischnahrungsmittelabteil 2 einen vorbestimmten niedrigeren Wert erreicht hat. Sowie das erwünschte Temperaturminimum in den Frischnahrungsmittelabteil erreicht ist, wirkt der Binetallstreifen 22 im Sinne der Entfernung des Verschlusses des Steuerkanales 20, so daß der größte Teil der oder die gesamte Luftströmung in das Gefrierabteil geleitet wird.The air flow through the control channel 20 can be controlled by suitable means which are able to set the desired cooling of the two compartments. In the illustrated embodiment, a bimetal strip 22 is provided in the compartment 2, which actuates the valve 21 as a function of a change in temperature of the air contained in the fresh food compartment 2. If the bimetallic strip 22 moves in the sense of a closure of the control channel 20, then the air flow is diverted through the flow amplifier I 1 ) completely or partially into the fresh food compartment outlet 17. The control channel 20 remains completely or at least substantially closed until the temperature in the fresh food compartment 2 has reached a predetermined lower value. As soon as the desired minimum temperature is reached in the fresh food compartment, the binetallic strip 22 acts to remove the closure of the control channel 20, so that most or all of the air flow is directed into the freezer compartment.

sich
Es versteht^ daß die Erfindung nicht auf den speziellen, in den Zeichnung dargestellten Strömungsverstärker beschränkt ist. Diese Art von Strömungsverstärker sowie andere Arten, die einen oder mehrere Steuerkanäle oderthemselves
It will be understood that the invention is not limited to the particular flow intensifier shown in the drawings. This type of flow amplifier as well as other types that have one or more control channels or

-düsen zur Steuerung einer Hauptmediumsströmung zwischen 909844/0588- nozzles to control a main medium flow between 909844/0588

einem von mehreren Auslaßkanälen verwenden,sind an sich bekannt. Derartige Strömungsverstärker können so aufgebaut werden, daß.unter unterschiedlichen Steuerbedingungen der riediumsstrom zu jeweils dem einen oder dem anderen zweier Auslässe geleitet oder zwischen den beiden Auslassen aufgeteilt werden kann« Ebenso kann der Mediumsstrom zu einem gewünschten Auslaß dadurch gesteuert werden, daß entweder ein Steuerkanal oder mehr als ein Steuerkanal verschlossen oder gedrosselt werden.using one of several outlet channels are per se known. Such flow amplifiers can be constructed so that under different control conditions the riediumsstrom passed to one or the other of two outlets or divided between the two outlets «Likewise, the medium flow to a desired outlet can be controlled by either one control channel or more than one control channel can be closed or throttled.

909844/0588909844/0588

Claims (1)

PatentansprücheClaims 1. Kühlschrank mit zumindest einem ersten und einem zweiten Vorratsabteil, denen über eine Luftzufuhreinrichtung gekühlte Luft zugeführt wird, dadurch gekennzeichnet, daß die Luftzufuhreinrichtung (9, 8; 11, 10; 6, h) für die gekühlte Luft einen Strömungsverstärker (1Ό enthält, der einen Haupteinlaß (15) für die gekühlte Luft aufweist, und über einen ersten (16) mit dem ersten Abteil (1) sowie einen zweiten (17) mit einem zweiten Abteil (2) in Verbindunr stehenden Auslaß verfügt und dem ein Steuerkanal (20) zugeordnet ist, dessen Durchflußquerschnitt durch Steuermittel (21, 22) in Abhängigkeit von der Temperatur in einem der beiden Abteile (l, 2) zur Veränderung der Anteile der den einzelnen Abteilen (1, 2) zugeführten Ilenge gekühlter Luft droscelbar ist.1. A refrigerator with at least a first and a second storage compartment to which cooled air is supplied via an air supply device, characterized in that the air supply device (9, 8; 11, 10; 6, h) contains a flow amplifier (1Ό) for the cooled air, which has a main inlet (15) for the cooled air, and a first (16) with the first compartment (1) and a second (17) with a second compartment (2) in communication and with a control channel (20 ) is assigned, the flow cross-section of which can be droscelbar by control means (21, 22) as a function of the temperature in one of the two compartments (1, 2) to change the proportions of the Ilenge of cooled air supplied to the individual compartments (1, 2). 2» Kühlschrank nach Anspruch 1, dadurch gekennzeichnet, daß der Strömungsverstärker (1*0 derart ausgelegt ist, daß zumindest der größte Teil eier Kühlluft, die über den Einlaß (15) eintritt, bei einer. .:teuerkanal (20) über der. ersten Auslaß (IC) und bei geschlossenem Steuerkana] (20) über den zweiten Auslaß (17) abströmt.2 »Refrigerator according to claim 1, characterized in that that the flow amplifier (1 * 0 is designed in such a way that at least most of the cooling air passes through the inlet (15) occurs at a. .: control channel (20) above the. first outlet (IC) and with closed control channel] (20) flows out via the second outlet (17). 90984A/058890984A / 0588 LeerseiteBlank page
DE19661501260 1965-09-29 1966-09-23 Fridge Pending DE1501260A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US491130A US3290893A (en) 1965-09-29 1965-09-29 Household refrigerator

Publications (1)

Publication Number Publication Date
DE1501260A1 true DE1501260A1 (en) 1969-10-30

Family

ID=23950913

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661501260 Pending DE1501260A1 (en) 1965-09-29 1966-09-23 Fridge

Country Status (5)

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US (1) US3290893A (en)
JP (1) JPS4420839B1 (en)
DE (1) DE1501260A1 (en)
GB (1) GB1150916A (en)
SE (1) SE331697B (en)

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WO2012136532A1 (en) 2011-04-05 2012-10-11 BSH Bosch und Siemens Hausgeräte GmbH Combination refrigerator

Also Published As

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GB1150916A (en) 1969-05-07
JPS4420839B1 (en) 1969-09-06
SE331697B (en) 1971-01-11
US3290893A (en) 1966-12-13

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