WO2015025675A1 - 保冷庫 - Google Patents
保冷庫 Download PDFInfo
- Publication number
- WO2015025675A1 WO2015025675A1 PCT/JP2014/069576 JP2014069576W WO2015025675A1 WO 2015025675 A1 WO2015025675 A1 WO 2015025675A1 JP 2014069576 W JP2014069576 W JP 2014069576W WO 2015025675 A1 WO2015025675 A1 WO 2015025675A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cooler
- cold
- cool
- storage material
- cold storage
- Prior art date
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Classifications
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- 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
- F25D15/00—Devices not covered by group F25D11/00 or F25D13/00, e.g. non-self-contained movable devices
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- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/006—Self-contained movable devices, e.g. domestic refrigerators with cold storage accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0004—Particular heat storage apparatus
- F28D2020/0013—Particular heat storage apparatus the heat storage material being enclosed in elements attached to or integral with heat exchange conduits
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Definitions
- the present invention relates to a cold storage used for transportation of fresh food and the like.
- a freezer for freezing the cold storage material for example, a quick freezer that freezes the cold storage material by blowing air cooled by a heat exchanger into the storage is used (see Patent Document 2).
- the present invention has been made in consideration of the above-described problems of the prior art, and an object of the present invention is to provide a cool box capable of efficiently and uniformly cooling a regenerator material and improving work efficiency.
- the cold storage according to the present invention is disposed between a regenerator that cools the inside of the refrigerator, a cooler that cools the regenerator, the regenerator and the cooler, and the regenerator and the cooler. And a heat conducting member to be brought into thermal contact.
- the regenerator can be efficiently and uniformly cooled by the cooler. For this reason, it is possible to prevent variation in the cooling time of each cold storage material, and to maximize the maintenance duration of the cold storage temperature zone by the cold storage material by using the cold storage material that is uniformly cooled and frozen in this way. And the internal temperature can be stably maintained for a long time.
- the cold storage material was uniformly cooled and frozen by the cold storage material cooler and the metal plate when arranged on one or more of the top surface, the back surface, or the side surface of the inner surface of the warehouse.
- the inside of the cabinet can be cooled evenly by natural convection, and the maintenance duration time of the cold insulation temperature zone can be further increased.
- the heat conduction member is a flat heat conduction plate arranged in close contact with the outer surface of the cold storage material, and the cooler is arranged in close contact with the outer surface side of the heat conduction plate. Can be cooled more uniformly and rapidly.
- a heat insulating material, a vacuum heat insulating material, the cooler, the heat conduction plate, and the cold storage material are sequentially provided from the outside of the storage toward the inside of the storage. And high heat insulation performance and the efficient cooling in the warehouse by a cool storage material are attained.
- connection port for attaching / detaching a cooling medium circulation means for circulating a cooling medium supplied from an external cooling device to the cooler. Only by connecting the cooling medium circulation means of the apparatus to the connection port, the regenerator material can be cooled by the cooler via the cooling medium. That is, since the regenerator material can be cooled simply by moving the external cooling device as appropriate and connecting it to a desired cool box, work efficiency is improved.
- the inner surface of the storage room is defined by a metal inner box disposed on the inner surface side of the cold storage material so as to be in contact with the cold storage material, the internal cleaning operation is facilitated.
- the metal inner box in contact with the cold storage material, the interior can be efficiently cooled via the inner box.
- the heat conductive member and the inner box may be connected by a connecting member having thermal conductivity. If it does so, an inner box can be rapidly cooled with a cooler via a heat conductive member and a connection member, and the inside of a store
- a thermal resistance adjusting member that adjusts the thermal resistance between the contact surfaces may be provided between the contact surfaces of the cold storage material and the inner box.
- a thermal resistance adjusting member that adjusts the thermal resistance between the contact surfaces may be provided between the contact surfaces of the cold storage material and the inner box. For example, by providing a thin heat insulating sheet as a heat resistance adjusting member, it is possible to suppress heat radiation from the surface of the regenerator material to the inner box and the cabinet when the regenerator material is cooled by the cooler. An increase in the cooling time of the material can be avoided.
- the cool box itself is equipped with a cooler, it is not necessary to freeze the regenerator material in an external freezer and install it in the cool box again, and the trouble of preparation work at the start of use of the cool box And can increase efficiency. Furthermore, since the heat conducting member that brings them into thermal contact with each other is disposed between the regenerator and the cooler, the regenerator can be efficiently and uniformly cooled by the cooler.
- FIG. 1 is a perspective view of a cold container as a cold box according to an embodiment of the present invention.
- FIG. 2 is an enlarged longitudinal sectional view of a part of the cold insulation container shown in FIG.
- FIG. 3 is a block diagram showing a configuration in a state where the refrigerator unit is connected to the cold container shown in FIG.
- FIG. 4 is a longitudinal sectional view showing a configuration of a cold storage material unit according to a modification.
- FIG. 1 is a perspective view of a cold storage container 10 as a cold storage according to an embodiment of the present invention, and shows a state in which a refrigerator unit 14 for cooling a cold storage material 12 installed in the cold storage container 10 is connected.
- FIG. 2 is an enlarged longitudinal sectional view of a part (upper left corner) of the cold container 10 shown in FIG.
- FIG. 3 is a block diagram showing a configuration in a state where the refrigerator unit 14 is connected to the cold container 10 shown in FIG.
- the cold storage container 10 according to the present embodiment is a cold storage container used for transporting fresh food and other items that need to be refrigerated or frozen, and can be transported by truck or the like while keeping the internal temperature constant. Yes.
- the cold storage container 10 cools a container main body 16 having a front opening 16a opened and closed by an opening / closing door 18 and a cold storage chamber 16b that is inside the container main body 16. And a cold storage material unit 20 having the material 12.
- the container main body 16 is a heat insulating box body in which a cold insulation chamber 16b for storing articles and the like is formed.
- the cold insulation chamber 16b is defined by a top wall portion 16c, a back wall portion 16d, left and right side wall portions 16e and 16e, and a bottom wall portion 16f.
- a front opening 16a that is not provided with a wall portion is opened and closed by an opening / closing door 18, and articles are taken in and out from the front opening 16a.
- Swivel casters 22 are attached to the bottom four corners of the container body 16 so that the cold container 10 can be easily moved.
- a heat insulating material 24 and a vacuum heat insulating material 26 are arranged in order from the outside (outside) to the inside (inside) of the top wall 16c.
- the cool storage material unit 20 is fixed inside.
- Two layers of heat insulating materials 24 and 25 and a vacuum heat insulating material 26 are disposed on the side wall portion 16e in order from the outer side to the inner side, and the regenerator unit 20 is fixed to the inner side of the vacuum heat insulating material 26. ing.
- the gap around the vacuum heat insulating material 26 is filled with the heat insulating material 24.
- the back wall portion 16d and the bottom wall portion 16f may have the same structure as the top wall portion 16c or the side wall portion 16e.
- the cool storage material unit 20 is provided on the inner surface of the bottom wall portion 16f. Is not provided. Further, the top wall portion 16c may have the same structure as the side wall portion 16e, and conversely, the side wall portion 16e may have the same structure as the top wall portion 16c.
- the heat insulating material 24 is formed of, for example, styrene foam, and the heat insulating material 25 is formed of, for example, foamed urethane.
- the vacuum heat insulating material 26 for example, a known material in which a core material is covered with a laminate film and the inside is decompressed and sealed in a vacuum state may be used.
- the vacuum heat insulating material 26 has extremely high heat insulating performance as compared with the general heat insulating materials such as the above-mentioned expanded polystyrene.
- the cold storage container 10 further includes a temperature sensor 21 for monitoring the internal temperature of the cold storage room 16 b, and a GPS (global positioning system) device 23 for detecting the position of the cold storage container 10.
- a temperature sensor 21 for monitoring the internal temperature of the cold storage room 16 b
- a GPS (global positioning system) device 23 for detecting the position of the cold storage container 10.
- the cold insulation container 10 may be provided with an open / close detection switch for the open / close door 18 and a connection detection switch for a connection device 44 to be described later.
- a sensor or the like may be provided.
- the regenerator unit 20 includes an inner surface (top surface) of the top wall portion 16 c and an inner surface (back surface) of the back wall portion 16 d among the inner surfaces of the container main body 16 that defines the cold insulation chamber 16 b. ), And substantially the entire inner surface (side surface) of the side wall portion 16e.
- the inner surface (bottom surface) of the bottom wall portion 16f that serves as a placement surface for the article or the like is not provided with the cold storage material unit 20 as described above. It can also be provided.
- the regenerator unit 20 includes a regenerator material 12 for cooling the interior of the refrigerator, a cooler 28 for cooling and freezing the regenerator material 12, and a regenerator material 12 and a cooler 28. And a metal plate (heat conducting member, heat conducting plate) 30 that makes them both in thermal contact with each other.
- the cool storage material 12 may be a known material in which water, a gelling agent, and the like are enclosed in a resin case such as polyethylene, and is formed in a flat plate shape, for example (see FIGS. 1 and 2). .
- the cooler 28 is configured such that a metal pipe such as a copper pipe (not shown) through which a cooling medium (heat medium) circulates has a meandering shape or a spiral shape, and is closely attached to a flat inner surface such as the top wall portion 16c.
- the metal pipe extending from the cooler 28 is connected to a connection port 32 (see FIGS. 1 and 3) fixed to the outer surface of the container body 16 (for example, the outer surface of the side wall portion 16e). The medium is circulated to the cooler 28.
- the metal plate 30 is formed of a metal having good thermal conductivity, such as aluminum or copper, and one surface is closely attached to the outer surface side of the regenerator material 12 and the other surface is closely attached to the inner surface side of the cooler 28. ing.
- the metal plate 30 has, for example, the same or substantially the same outer dimensions as the regenerator material 12 in a state of being superimposed on the regenerator material 12, and can efficiently transmit the cold heat from the cooler 28 to the regenerator material 12. It is possible.
- the refrigerator unit 14 includes a unit main body 36 configured to be movable by a universal caster 34, a refrigeration circuit 38 installed inside the unit main body 36, and a refrigeration circuit. And a cooling medium distribution path (cooling medium distribution means) 40 for supplying the cooling medium cooled by 38 to the cold container 10 side.
- the refrigerator unit 14 is generally called a condensing unit.
- the refrigeration circuit 38 is a known refrigeration cycle apparatus including a compressor, a condenser, an expansion valve, an evaporator, and the like (not shown), and a desired cooling medium flowing through the cooling medium flow path 40 is obtained by cold heat generated by the evaporator. Rapid cooling to the temperature range is possible.
- a circulation pump (not shown) for circulating the cooling medium is connected to the cooling medium circulation path 40.
- the cooling medium is a heat medium called so-called brine, such as water or antifreeze.
- connection port 42 that can be attached to and detached from the connection port 32 of the cold container 10 is provided.
- connection ports 32 and 42 are detachable from each other, and constitute a known connection device (coupling device) 44 provided with an automatic opening / closing valve inside.
- the connection ports 32 and 42 are connected to each other, the cooling medium can be circulated from the refrigerator unit 14 side to the cooler 28 side of the cold storage container 10, and when the connection ports 32 and 42 are disconnected.
- Each of the automatic open / close valves is closed to prevent the cooling medium from leaking.
- the refrigerator unit 14 When transporting items that require cooling or freezing, such as fresh food, in the cold container 10, first, the refrigerator unit 14 is moved near the cold container 10, and the connection port 42 at the tip of the cooling medium flow path 40. Is connected to the connection port 32 on the outer surface of the cold storage container 10, and the connection tool 44 is brought into a connected state.
- the refrigerating operation of the refrigerator unit 14 is started, the cooling medium is cooled by the refrigeration circuit 38, and the cooled cooling medium is transferred from the cooling medium flow path 40 to the cooler 28 of the cold storage container 10 through the connection device 44. Circulate and circulate. If it does so, the cold heat from a cooling medium will be transmitted to the cool storage material 12 uniformly and rapidly from the cooler 28 via the metal plate 30, and cool storage will be performed rapidly. That is, since the heat exchange is promoted by the metal plate 30 that is in contact with the cooler 28 and the regenerator material 12 with a large surface area, the regenerator material 12 is extremely rapidly and uniformly frozen. Cools rapidly and uniformly.
- the open / close door 18 is opened and the cold insulation chamber 16b is opened from the front opening 16a.
- the goods are thrown in.
- the operation of housing the article in the cold insulation container 10 is completed by closing the open / close door 18.
- the connection device 44 may be disconnected at a predetermined timing, for example, after the cold storage to the cold storage material 12 is completed or after the article is charged into the cold insulation chamber 16b.
- the articles stored in the cold chamber 16 b can be smoothly transported to a desired place by a truck or the like while being held at a desired low temperature by the cold storage material 12.
- the cool storage material 12 that cools the inside of the cool storage chamber 16b, the cooler 28 that cools the cool storage material 12, the cool storage material 12 and the cooler 28 are heated.
- a metal plate 30 which is a heat conducting member to be brought into contact.
- the cooler container 10 itself is provided with the cooler 28, the cold storage material 12 is frozen in an external freezer and does not need to be installed in the cooler container 10 again. It is possible to increase the labor and efficiency of work. At this time, the cooler 28 can be cooled by the small refrigerator unit 14, and a large-sized freezer for storing and freezing the plurality of regenerator materials 12 is not required, and the installation space is also unnecessary.
- the metal plate 30 is disposed between the regenerator material 12 and the cooler 28 so that they are in thermal contact with each other, the regenerator material 12 is efficiently and uniformly made by the cooler 28 due to good heat conduction of the metal plate 30. And can be cooled rapidly. For this reason, it is also prevented that variation occurs in the cooling time of the individual cold storage materials 12.
- the cold storage material 12 that has been uniformly cooled and frozen in this manner can maximize the maintenance duration of the cold insulation temperature zone by the cold storage material 12, and can keep the temperature in the cold storage chamber 16b for a long time (for example, 8 hours). ) Can be maintained stably over a long period of time. Moreover, since the cool storage material 12 can be uniformly and rapidly cooled by the cooler 28, the inside of the cold insulation chamber 16b can be set to the required temperature zone in a short time (for example, within 3 hours) at the start of use. .
- the cold storage material 12 is formed in a flat plate shape, and the cold storage material 12 is disposed so as to cover the top surface, the back surface, and the side surface of the inner surface of the cold storage chamber 16b.
- the cool storage material 12 uniformly cooled and frozen by the cooler 28 and the metal plate 30 can uniformly cool the interior by natural convection, and the maintenance duration of the cold insulation temperature zone can be further increased.
- the cool storage material 12 may be provided on any one or a plurality of surfaces in addition to the top surface, the back surface, and the side surfaces of the inside surface of the cold storage chamber 16b. 18 may be provided on the inner surface.
- the top wall portion 16c, the back wall portion 16d, and the side wall portion 16e include the heat insulating material 24 (25), the vacuum heat insulating material 26, the cooler 28, the metal plate 30, and the cold storage material 12. Since it is provided in order from the outer side to the inner side, high heat insulation performance and efficient cooling of the inside by the cold storage material 12 are possible.
- the structure of the top wall portion 16c and the like may be other structures.
- FIG. 4 is a longitudinal sectional view showing a configuration of a cold storage material unit 20a according to a modification.
- FIG. 4 shows a configuration example in which the cold storage material unit 20a is applied to the side wall portion 16e, the cold storage material unit 20a may be applied to the top wall portion 16c, the back wall portion 16d, and the like.
- the inner surface of the cold storage chamber 16 b which is the inside of the cold storage container 10 may be defined by a metal inner box 50 disposed on the inner surface side of the cold storage material 12 so as to be in contact with the cold storage material 12.
- the inner box 50 is formed of, for example, a stainless plate. By disposing the inner box 50 on the inner surface of the interior, the interior cleaning operation can be easily performed.
- the cold storage material unit 20a is different from the cold storage material unit 20 shown in FIG. 2 in that the cold storage material unit 20a includes an internal heat transfer plate 52 that connects the inner box 50 and the metal plate 30.
- the internal heat transfer plate (connecting member) 52 is a sheet metal bracket that fixes the metal plate 30 directly cooled by the cooler 28 to the inner box 50, and is made of a material having good thermal conductivity such as copper or aluminum. It should be configured.
- the cold storage material unit 20a is provided with the internal heat transfer plate 52, so that the cold heat from the metal plate 30 cooled by the cooler 28 is transmitted to the cold storage material 12 and is frozen at the same time. It is quickly transmitted from the plate 52 to the inner box 50.
- the inner box 50 that is, the inside of the cold insulation chamber 16b can also be rapidly and uniformly cooled. Moreover, since the metal inner box 50 is in contact with the cold storage material 12, the inside of the cold storage chamber 16b can be evenly and efficiently cooled through the inner box 50 even when the cold storage container 10 is transported. .
- a gap G is provided between the vacuum heat insulating material 26 and the cooler 28. Due to the heat insulation characteristics of the air interposed in the gap G, it is possible to reduce the cold heat generated in the cooler 28 and the cold heat accumulated in the cold storage material 12 from leaking to the vacuum heat insulation material 26 and moving to the outside. In general, it is said that air does not generate natural convection at a distance of 2 to 3 mm or less. Therefore, it is desirable to form the gap G at a minute distance of 3 mm or less. As a result, natural convection can be prevented from occurring in the gap G, and the amount of cold heat leaked from the cooler 28 to the vacuum heat insulating material 26 can be further reduced.
- Such a gap G between the vacuum heat insulating material 26 and the cooler 28 may of course be applied to the regenerator unit 20 shown in FIG.
- thermal resistance adjusting member (not shown) for adjusting the thermal resistance between the contact surfaces between the cold storage material 12 and the inner box 50.
- a thermal resistance adjusting member for adjusting the thermal resistance between the contact surfaces between the cold storage material 12 and the inner box 50.
- the cool storage material 12 can be cooled by the cooler 28 via the cooling medium only by connecting the connection port 42 provided at the tip of the cooling medium flow path 40 to the connection port 32. That is, the refrigerating material 12 can be cooled by simply moving the refrigerator unit 14 and connecting it to the desired cold storage container 10, thereby improving work efficiency.
- the refrigerator unit 14 is a separate body, it is not necessary to mount a mechanical element such as a compressor (the refrigeration circuit 38) in the cold container 10, and the cold container 10 transported by a truck or the like is reduced in weight and impact resistance. Can be improved, versatility is enhanced, and a large volume of the cold insulation chamber 16b can be secured.
- a mechanical element such as a compressor (the refrigeration circuit 38)
Abstract
Description
12 蓄冷材
14 冷凍機ユニット
16 コンテナ本体
16a 前面開口
16b 保冷室
20,20a 蓄冷材ユニット
24,25 断熱材
26 真空断熱材
28 冷却器
30 金属板
32,42 接続口
36 ユニット本体
38 冷凍回路
40 冷却媒体流通経路
44 接続器具
50 内箱
52 庫内伝熱板
Claims (9)
- 庫内を冷却する蓄冷材と、
前記蓄冷材を冷却する冷却器と、
前記蓄冷材と前記冷却器との間に配置され、前記蓄冷材と前記冷却器とを熱的に接触させる熱伝導部材と、
を備えることを特徴とする保冷庫。 - 請求項1記載の保冷庫において、
前記蓄冷材は平板状に形成され、
前記蓄冷材は、前記庫内の内面のうち、天面、背面、又は側面のいずれか1面又は複数面に配置されていることを特徴とする保冷庫。 - 請求項2記載の保冷庫において、
前記熱伝導部材は、前記蓄冷材の外面に密着配置される平板状の熱伝導板であり、
前記熱伝導板の外面側に前記冷却器が密着配置されることを特徴とする保冷庫。 - 請求項3記載の保冷庫において、
当該保冷庫の本体の壁部には、断熱材と、真空断熱材と、前記冷却器と、前記熱伝導板と、前記蓄冷材とが、庫外側から庫内側に向かって順に設けられていることを特徴とする保冷庫。 - 請求項4記載の保冷庫において、
前記真空断熱材と前記冷却器との間に隙間を設けたことを特徴とする保冷庫。 - 請求項1~5のいずれか1項に記載の保冷庫において、
当該保冷庫の本体の外面側には、外部の冷却装置から供給される冷却媒体を前記冷却器へと循環するための冷却媒体流通手段を着脱する接続口が設けられていることを特徴する保冷庫。 - 請求項2~5のいずれか1項に記載の保冷庫において、
前記庫内の内面は、前記蓄冷材の内面側に該蓄冷材と接触するように配置された金属製の内箱によって画成されていることを特徴とする保冷庫。 - 請求項7記載の保冷庫において、
前記熱伝導部材と前記内箱との間を熱伝導性を有する連結部材で繋いだことを特徴とする保冷庫。 - 請求項7記載の保冷庫において、
前記蓄冷材と前記内箱との接触面間に、該接触面間での熱抵抗を調整する熱抵抗調整部材を設けたことを特徴とする保冷庫。
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JP2015532780A JP6107954B2 (ja) | 2013-08-22 | 2014-07-24 | 保冷庫 |
CN201480012756.6A CN105051470B (zh) | 2013-08-22 | 2014-07-24 | 保冷库 |
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CN201187927Y (zh) * | 2008-03-21 | 2009-01-28 | 河南新飞电器有限公司 | 一种蓄冷冰箱 |
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WO2023095527A1 (ja) * | 2021-11-26 | 2023-06-01 | パナソニックIpマネジメント株式会社 | 冷蔵庫 |
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JP6107954B2 (ja) | 2017-04-05 |
CN105051470B (zh) | 2017-07-21 |
CN105051470A (zh) | 2015-11-11 |
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