EP1917489B1 - Kühlvorrichtung - Google Patents

Kühlvorrichtung Download PDF

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Publication number
EP1917489B1
EP1917489B1 EP06795775.3A EP06795775A EP1917489B1 EP 1917489 B1 EP1917489 B1 EP 1917489B1 EP 06795775 A EP06795775 A EP 06795775A EP 1917489 B1 EP1917489 B1 EP 1917489B1
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EP
European Patent Office
Prior art keywords
cabin
flap
valve
inlet nozzle
opening
Prior art date
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Active
Application number
EP06795775.3A
Other languages
English (en)
French (fr)
Other versions
EP1917489A2 (de
Inventor
Gorkem Suner
Birol Konak
Engin Yilmaz
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP1917489A2 publication Critical patent/EP1917489A2/de
Application granted granted Critical
Publication of EP1917489B1 publication Critical patent/EP1917489B1/de
Active legal-status Critical Current
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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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25D17/047—Pressure equalising devices
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/146—Collecting condense or defrost water; Removing condense or defrost water characterised by the pipes or pipe connections

Definitions

  • the present invention relates to a cooling device that comprises a valve which provides to balance the cabin inner pressure that is disrupted during the opening closing of the door and particularly discharging the water formed during the defrosting process out of the cabin.
  • the state- of-the-art cooling devices comprise a cooling cabin and a door attached by means of a hinge to this cooling cabin such that it can be opened or closed, providing access to the cooling cabin.
  • the cooling cabin is insulated from the exterior environment in a partially leak proof way.
  • the evaporator providing the cooling of the inner volume of the cooling device is frosted from time to time. This frosting is defrosted by application of various defrosting methods and the defrost water is discharged out of the cabin by a discharge duct, one end of which extends into the cooling cabin and the other end to the exterior of the cabin, that is the atmosphere.
  • the water delivered out of the cabin is preferably delivered to a storage unit situated in the area of the compressor cabin.
  • the fan starts to operate when the door is opened and closed, drawing the air within the cooling cabin towards the evaporator and causes the inner pressure of the cabin to be somewhat reduced which results in the creation of a vacuum inside the cabin.
  • an additional amount of force has to be exerted by the user to counteract this pressure difference because of the imbalance of pressure inside and outside of the cooling cabin.
  • the discharge duct that discharges the water formed in the cooling cabin forms the only route connecting the cabin to the atmosphere.
  • air is sucked in from the end of the discharge duct extending to the atmosphere. If there is an excess amount of water present in the discharge duct or in the storage unit whereto the end of the discharge duct extends, water is sucked in together with the air until the cabin inner pressure is balanced.
  • the sound that is emanated as the air and water mixture that passes through the discharge duct can reach an extent that will be annoying to the user.
  • the discharge duct being the only route of the cooling cabin opening to the atmosphere when the door is closed, also causes the formation of imbalances in the cabin inner pressure and temperature, in addition to all the above mentioned adversities.
  • the discharge duct is configured like a "U" shape keeping some amount of the water inside - especially the water from the defrosting process - to prevent the air with relatively higher temperature from entering through the end of the discharge duct open to the atmospheric pressure into the cooling cabin and disrupting the cabin temperature and the balance of pressure.
  • the trapping of the water inside the "U" shaped discharge duct obstructs the flow of air between the exterior and the interior of the cabin.
  • the cooling device comprises a "U" shaped drain tube and a one way vent disposed upstream of the drain trap portion that opens from the atmosphere towards the inside of the cabin above the maximum level of collectible water in the "U" shaped portion. Accordingly as the air flow between the end of the drain tube extending to the ambient atmosphere and the end of the drain tube extending into the food storage compartment is prevented due to the water collected in the "U" shaped trap portion, the imbalance of air pressure created by the opening closing of the refrigerator is also prevented by means of the vent situated on the side surface of the drain tube opening towards the food storage compartment and being kept open until the air pressure in the food storage compartment is equalized with the ambient air pressure. Furthermore the noise that is emanated as the mixture of air and water passes through the drain tube is prevented by keeping this vent open as explained above.
  • one leg of the flap In a resting condition, one leg of the flap is immersed into drained water at the bottom of the drain trap, while the other leg closes the air inlet. In case of a negative pressure inside the refrigerator, the flap rotates for allowing the flow of ambient air through the air inlet into the refrigerator.
  • the aim of the present invention is the realization of a cooling device comprising a valve that prevents the imbalances of pressure and temperature in the cooling cabin and also provides the discharge of the defrost water.
  • the cooling device realized in order to fulfill the objectives of the present invention, explicated in the first claim and other dependent claims, comprises a discharge duct comprising a valve which provides to maintain the inner temperature of the cabin under normal operating conditions, allowing the passage of the ambient air into the cabin to prevent pressure imbalances and also allowing the passage water from the cabin to the outside environment for discharging the defrost water.
  • a valve is situated between the inlet nozzle of the discharge duct extending into the cooling cabin and the outlet nozzle extending to the outside environment that has the ability of moving by means of the weight of the defrost water or the force created due to the vacuum inside the cabin. Since this valve moves by means of the weight of water and/or the force exerted by the air, it can respond to the momentarily created forces.
  • the valve formed by two flaps having fixed positions relative to one another By means of the valve formed by two flaps having fixed positions relative to one another, when a force is exerted on only one flap, the other flap moving in accordance with this flap, can control the passage of air and water through the discharge duct.
  • One of the flaps moves by means of the weight of the water collected and delivered to the discharge duct or by the exertion of force by the air inflowing into the discharge duct due to the pressure difference between the cabin and the ambient surroundings and this flap regulates the flow of water between the inlet nozzle and the outlet nozzle.
  • the other flap moving in accordance with this flap, regulates the air flow between the inlet nozzle and the outlet nozzle.
  • the discharge duct can limit the area swept by the valve situated inside during its turning motion and can also restrain its motion. By constricting the discharge duct in the positions that the valve should not pass, via entering into the area swept by the valve provides the prevention of the positions that the valve should not pass without the need for additional retainers.
  • the discharge duct has only one valve and does not have a "U" shaped configuration for trapping in defrost water. Therefore the odor stemming from long kept stale water does not form. Furthermore the formation of adverse effects like wearing of the discharge duct by the continuous contact of water is avoided.
  • the cooling device (1) of the present invention comprises one or more cabins (2) wherein items to be cooled are stored, a door (3) for closing the cabin (2) and providing access of the user to the items emplaced in the cabin (2), a discharge duct (4) that allows the passage of air and water there through, a valve (5) situated in the discharge duct (4), providing to balance the inner pressure of the cabin (2) by allowing the inflow of ambient air into the cabin (2) and providing the water to be discharged out of the cabin (2) by allowing the passage of the water accumulated in the cabin (2) ( Figure 1 ).
  • the discharge duct (4) comprises an inlet nozzle (8) extending into the cabin (2), providing the water formed during the defrosting process to be delivered from the cabin (2) into the discharge duct (4), through which air is taken in from the discharge duct (4) into the cabin (2) upon imbalance of pressure with the ambient surroundings and the cabin (2), an outlet nozzle (9) extending into the ambient surroundings by means of which the water formed during the defrosting process is discharged out of the cabin (2) and an opening (10) situated in between the inlet nozzle (8) and the outlet nozzle (9), extending to the ambient surroundings through which air is taken into the cabin (2).
  • the valve (5) divides the discharge duct (4) into two portions such that the inlet nozzle (8) is on one side and the outlet nozzle (9) and opening (10) are on the other side when there is no passage of air or water.
  • pressure imbalance it moves such that the inlet nozzle (8) and the opening (10) are on one side, allowing the inflow of air from the opening (10) towards the inlet nozzle (8).
  • the valve (5) moves such that the inlet nozzle (8) and the outlet nozzle (9) are on one side allowing the passage of water from the inlet nozzle (8) towards the outlet nozzle (9). Consequently the passage of air and water are regulated according to the positioning of the valve (5).
  • the valve (5) disposed within the discharge duct (4) closes the discharge duct (4) such that air and/or water cannot pass through in the position of balance.
  • the valve (5) comprises a flap (6) positioned between the inlet nozzle (8) and the outlet nozzle (9) when in the position of balance, while the inner cabin (2) pressure is in balance and the defrost water is not discharged, and another flap (60) positioned between the inlet nozzle (8) and the outlet nozzle (9) fixed to this flap (6) with a certain angle, moving together with this flap (6) and a pin (11) providing both of the flaps (6 and 60) to be fixed on the discharge duct (4), forming the rotational axis.
  • the flaps (6 and 60) rotate around this pin (11).
  • This pin (11) is situated on the line on which the flaps (6 and 60) contact each other.
  • the flap (6) between the inlet nozzle (8) and the outlet nozzle (9) moves by means of the weight of the water collected in the cabin (2) and taken into the discharge duct (4) or by the exertion of force by the air inflowing into the discharge duct (4) from the ambient surroundings due to the pressure difference between the cabin (2) and the ambient surroundings.
  • This flap (6) regulates the flow of water that moves from the inlet nozzle (8) to the outlet nozzle (9).
  • the other flap (60) also moves simultaneously depending on the movement of this flap (6) towards the inlet nozzle (8) and prevents the inflow of air from the opening (10) towards the inlet nozzle (8).
  • the flap (6) moves form the outlet nozzle (9) towards the inlet nozzle (8) by means of the force exerted by the air passing from the ambient surroundings into the discharge duct (4) due to the pressure difference of the cabin (2) and the ambient air.
  • the other flap (60) moves from the opening (10) towards the outlet nozzle (9) and regulates the inflow of air from the opening (10) to the inlet nozzle (8).
  • the valve (5) cuts off the communication of the inlet nozzle (8) with the outlet nozzle (9) and the opening (10) both of which extend to the ambient surroundings (atmosphere). In this position, the inlet nozzle (8) stays on one side of the valve (5) due to its position on the discharge duct (4), the outlet nozzle (9) and the opening (10) stay on the other side of the valve (5).
  • the valve (5) inhibits the inflow of air into the cabin (2) from the open outlet nozzle (9) of the discharge duct (4) and the opening (10) by separating the inlet nozzle (8) from the outlet nozzle (9) and the opening (10). Consequently the ambient air being higher in temperature than the inside of the cabin (2) is prevented from being delivered into the cabin (2) thus disrupting the balance of the cabin (2) temperature and also the balance of the cabin (2) inner pressure ( Figure 2 ).
  • the flap (6) that separates the inlet nozzle (8) from the outlet nozzle (9) and the opening (10) when in position of balance moves away from the opening (10) during the inflow of air into the cabin (2) from the atmosphere that has a higher pressure than the inner pressure of the cabin (2) without showing any resistance, and as a result of this movement the flap (60) that closes the gap between the inlet nozzle (8) and the opening (10) when in balance position, moves towards the opening (10) in between the inlet nozzle (8) and the opening (10) and allows the inflow of air from the opening (10) into the inlet nozzle (8) and hence into the cabin (2) by opening the gap between the inlet nozzle (8) and the opening (10).
  • the weights of the flaps (6 and 60) are different from each other. In all the positions, the flap (6) that rests in position of balance at the bottom, on which the forces are exerted is heavier than the flap (60) above, in order that the valve (5) can stay in the position of balance as required and to respond quickly in the other positions. Furthermore, the angle between the flaps (6 and 60) is less than 180° and greater than 90°, with the opening (10) being in between them.
  • the opening (10) is situated above the level of the pin (11) that provides the assembling of the valve (5) to the discharge duct (4). Accordingly, since there is a flap (60) above the level of the pin (11) in every position, the flow of air from the opening (10) towards the inlet nozzle (8) can be controlled.
  • the cooling device (1) comprises one or more retainers (7) providing to bound the movement of the valve (5) by being positioned at certain places on the discharge duct (4).
  • the opening (10) is situated in between the retainers (7), the flap (60) moves between these retainers (7).
  • One of the retainers (7) is mounted on the side of the inlet nozzle (8) such that the closing of the inlet nozzle (8) by the flap (60) is prevented, and the other is mounted on the side of the opening (10) such that the flap (60) allows the flow of air from the opening (10) towards the inlet nozzle (8).
  • the discharge duct (4) comprises an elbow element, preferably configured circularly to enhance the movement of the valve (5), situated between the inlet nozzle (8) and the outlet nozzle (9), having a larger cross section than the inlet nozzle (8) and the outlet nozzle (9), with the valve (5) positioned at its center.
  • Each of the flaps (6 and 60) sweeps an area bound by a 90° arc. The areas swept by the flaps (6 and 60) are preferably unsymmetrical.
  • the retainers (7) are situated at the points that allow each one of the flaps (6 and 60) to sweep an area bound by a 90° arc, preventing the valve (5) to move with an angle greater than 180 degrees around its own axis.
  • the air of the ambient atmosphere having a higher temperature is prevented from being transferred into the cabin (2) disrupting the balance of the inner temperature of the cabin (2) and the inner pressure balance of the cabin (2). Furthermore when the door (3) is opened and closed or when the inner pressure of the cabin (2) decreases comparatively to the atmospheric pressure due to any other reason, the ambient air flow into the cabin (2) is supplied until the cabin (2) inner pressure is equalized with the atmospheric pressure, providing to restore the imbalance of pressure. In addition to this, when there is any fluid in the cabin (2) that has to be discharged, this fluid can be discharged out of the cooling device (1).

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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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (10)

  1. Ein Kühlgerät (1) bestehend aus
    - einem oder mehreren Kabinen (2), wo Gegenstände für Kühlung gelagert werden,
    - einer Tür (3) für den Verschluss der Kabine (2) und stellt sicher das Erreichen für den Benutzer zu den Gegenständen, die in der Kabine (2) aufgestellt sind,
    - einer Entladungsleitung (4) mit einer Einströmdüse (8), die sich in die Kabine (2) erstreckt, wohin das Wasser, das während einem Entfrosten gebildet ist, von der Kabine (2) angeliefert und wodurch die Luft in die Kabine (2) auf Ungleichgewicht im Druck eingenommen wird,
    - einer Austrittsdüse (9), die sich zum umgebenden Umfeld erstreckt, wodurch das Wasser, das während dem Entfrosten gebildet ist, aus der Kabine (2) abgeführt wird und
    - einer Öffnung (10) hingesetzt zwischen Einströmdüse (8) und Austrittsdüse (9), um Ungleichgewicht im Druck zu verhindern, die sich zum umgebenden Umfeld erstreckt, wodurch die Luft in die Kabine (2) eingenommen wird, gekennzeichnet durch ein Ventil (5),
    - das die Entladungsleitung (4) in zwei Teile trennt, sodaß die Einströmdüse (8) auf einer Seite des Ventils (5), mit Austrittsdüse (9) und Öffnung (10) auf der anderen Seite des Ventils (5) sind, wenn es sich kein Durchgang für Luft oder Wasser befindet,
    - das die Entladungsleitung (4) einschliesst, sodaß die Luft und/oder das Wasser im Gleichgewicht nicht durchgehen können,
    - das sich bewegt, wenn ein Ungleichgewicht im Druck zwischen der Kabine (2) und dem umgebenden Umfeld entsteht, sodaß die Einströmdüse (8) und die Öffnung (10) auf einer Seite des Ventils (5) stehen und den inneren Druck der Kabine (2) regulieren, das mit dem Einlauf der Luft zwischen der Öffnung (10) und Einströmdüse (8) erlaubt wird,
    - das sich bewegt, wenn das Wasser in der Kabine (2) entladen wird, sodaß Einströmdüse (8) und Austrittsdüse (9) auf einer Seite des Ventils (5) stehen und die Entladung des Wassers aus der Kabine (2) ermöglichen, das mit dem Durchgang des Wassers zwischen Einströmdüse (8) und Austrittsdüse (9) erlaubt wird.
  2. Ein Kühlgerät (1) nach Anspruch 1, gekennzeichnet durch ein Ventil (5), besteht aus einer Klappe (6) eingesetzt zwischen Einströmdüse (8) und Austrittsdüse (9), und einer anderen Klappe (60) eingesetzt zwischen Einströmdüse (8) und Austrittsdüse (9) fixiert zu dieser Klappe (6) mit einem bestimmten Winkel, bewegt sich mit dieser Klappe (6) und einer Nadel (11), die versorgt, daß beide Klappen (6 and 60) auf der Entladungsleitung (4) fixiert werden und die Rotationsachse bilden.
  3. Ein Kühlgerät (1) nach Anspruch 2, gekennzeichnet durch ein Ventil (5), besteht aus einer Klappe (6), die sich bewegt mit dem Gewicht des Wassers, das sich in der Kabine (2) angesammelt hat und eingenommen in die Entladungsleitung (4) oder mit Ausübung der Kraft bei Luft, die in die Entladungsleitung (4) einfließt vom umgebenden Umfeld infolge der Druckdifferenz zwischen der Kabine (2) und dem umgebenden Umfeld, reguliert den Fluss von Wasser von Einströmdüse (8) zur Austrittsdüse (9) und einer anderen Klappe (60), die sich entsprechend der Bewegung dieser Klappe (6) bewegt, reguliert den Einfluss der Luft von der Öffnung (10) zur Einströmdüse (8).
  4. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen 2 oder 3, dadurch gekennzeichnet, daß ein Ventil (5) aus einer Klappe (6) besteht, die schwerer ist als der andere Klappe (60).
  5. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen 2 oder 4, dadurch gekennzeichnet, daß ein Ventil (5) aus Klappen (6 und 60) besteht, die zueinander mit einem Winkel fixiert sind kleiner als 180° und größer als 90°, wobei die Öffnung (10) dazwischen ist.
  6. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet, daß eine Öffnung (10) hingesetzt ist über dem Niveau der Nadel (11), die die Verbindung des Ventils (5) zur Entladungsleitung (4) sicherstellt.
  7. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet, daß mehr als einem Halter (7) die Bewegung des Ventils (5) begrenzen durch Einsetzung in bestimmte Positionen auf Entladungsleitung (4).
  8. Ein Kühlgerät (1) nach Anspruch 7, dadurch gekennzeichnet, daß eine Entladungsleitung (4) mehr als eine Öffnung (10) besitzt, die zwischen den Haltern (7) hingesetzt ist.
  9. Ein Kühlgerät (1) nach Anspruch 8, dadurch gekennzeichnet, daß ein Ventil (5) aus einer Klappe (60) besteht, die sich zwischen den Haltern (7) bewegt.
  10. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen 7 bis 9, dadurch gekennzeichnet, daß einer der Haltern (7) auf der Seite der Einströmdüse (8) montiert ist, sodaß die Klappe (6) verhindert wird, die Einströmdüse (8) einzuschliessen, und die andere ist auf der Seite der Öffnung (10) montiert, sodaß die andere Klappe (60) den Fluss der Luft von der Öffnung (10) zur Einströmdüse (8) erlaubt.
EP06795775.3A 2005-08-26 2006-08-25 Kühlvorrichtung Active EP1917489B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200503425 2005-08-26
PCT/IB2006/052952 WO2007023471A2 (en) 2005-08-26 2006-08-25 A cooling device

Publications (2)

Publication Number Publication Date
EP1917489A2 EP1917489A2 (de) 2008-05-07
EP1917489B1 true EP1917489B1 (de) 2017-09-27

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EP06795775.3A Active EP1917489B1 (de) 2005-08-26 2006-08-25 Kühlvorrichtung

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EP (1) EP1917489B1 (de)
WO (1) WO2007023471A2 (de)

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DE102010017919A1 (de) * 2010-04-22 2011-10-27 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
ITMI20110189U1 (it) * 2011-06-01 2012-12-02 Ik Interklimat S P A Valvola di compensazione per ambienti, quali una cella frigorifera, in cui si ha una pressione differente da quella atmosferica
KR101558220B1 (ko) 2013-11-19 2015-10-13 이상돌 착탈식 및 조립분해가 용이한 냉동/냉장용 드레인 에어커튼 소켓엘보
CN109708360A (zh) * 2018-08-13 2019-05-03 沈阳海尔电冰箱有限公司 冰箱内外气压平衡组件及具有该组件的冰箱
US11300349B2 (en) 2019-09-27 2022-04-12 Electrolux Home Products, Inc. Upright appliance drain jumper
CN112856058B (zh) * 2021-01-19 2022-06-17 中车唐山机车车辆有限公司 一种基于动车组整车气密性能保持的气密结构
US11732950B2 (en) 2021-04-26 2023-08-22 Electrolux Home Products, Inc. Pressure relief jumper drain for an appliance
CN115468349A (zh) * 2021-06-10 2022-12-13 博西华电器（江苏）有限公司 冰箱

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US2485115A (en) * 1946-07-19 1949-10-18 Gen Motors Corp Refrigerating apparatus having condensate collecting means
US3696632A (en) * 1971-03-08 1972-10-10 Gen Motors Corp Defrost water drain trap
US5557942A (en) * 1993-11-30 1996-09-24 Samsung Electronics Co., Ltd. Methods and apparatus for equalizing pressure between a refrigerating compartment and ambient air
US5499514A (en) * 1994-09-15 1996-03-19 Whirlpool Corporation Defrost water drain system for a refrigerator
JP2002243352A (ja) * 2001-02-16 2002-08-28 Matsushita Refrig Co Ltd 冷蔵庫および冷蔵庫用ドレントラップ
JP2005226964A (ja) * 2004-02-16 2005-08-25 Matsushita Electric Ind Co Ltd 冷蔵庫

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Also Published As

Publication number Publication date
WO2007023471A3 (en) 2007-06-07
WO2007023471A2 (en) 2007-03-01
EP1917489A2 (de) 2008-05-07

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