WO2016117141A1 - Glacière - Google Patents

Glacière Download PDF

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Publication number
WO2016117141A1
WO2016117141A1 PCT/JP2015/064313 JP2015064313W WO2016117141A1 WO 2016117141 A1 WO2016117141 A1 WO 2016117141A1 JP 2015064313 W JP2015064313 W JP 2015064313W WO 2016117141 A1 WO2016117141 A1 WO 2016117141A1
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WO
WIPO (PCT)
Prior art keywords
wall
liquid
tank
brine solution
temperature
Prior art date
Application number
PCT/JP2015/064313
Other languages
English (en)
Japanese (ja)
Inventor
邦夫 大澤
Original Assignee
株式会社中温
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 株式会社中温 filed Critical 株式会社中温
Priority to JP2016570473A priority Critical patent/JP6198975B2/ja
Priority to CN201580074201.9A priority patent/CN107250691B/zh
Priority to KR1020177019881A priority patent/KR102292586B1/ko
Publication of WO2016117141A1 publication Critical patent/WO2016117141A1/fr

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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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • 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
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/006—Thermal coupling structure or interface
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/065—Details
    • 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
    • F25D29/00—Arrangement or mounting of control or safety 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/12—Insulation with respect to heat using an insulating packing material
    • 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 refrigerator that can store an object to be cooled at a temperature lower than 0 ° C. without being frozen.
  • Patent Document 1 discloses a method of immersing and storing fresh food in storage water at -2 ° C to 0 ° C.
  • Patent Document 2 discloses a method for preserving fresh food by cooling with ultra-low temperature water maintained in an unfrozen state at 0 ° C. or lower.
  • JP 60-49740 A JP-A-8-116869
  • the inventor invented the cool box according to the present invention as a means for easily solving this problem.
  • the object of the present invention is to provide a cool box that can be easily stored without freezing the object to be cooled below 0 ° C.
  • the cold storage according to the present invention is a cold storage having at least a housing having a storage space for a cold object inside, and a part of a wall forming the outer shape of the housing includes an outer wall and the storage space.
  • An inner wall having thermal conductivity facing each other and a partition wall having thermal conductivity provided between the outer wall and the inner wall, and a brine solution that does not freeze at 0 ° C. is accommodated between the inner wall and the partition wall.
  • the cooling means freezes the liquid.
  • the liquid may be a liquid that does not freeze at 0 ° C., and the cooling means may be configured not to freeze the liquid.
  • the cool box according to the present invention is formed of a material selected from cold-resistant rubber, plastics, foamed resins, ceramics, and glass, and materials coated with copper, titanium, stainless steel, aluminum, and aluminum alloy. Or a multilayer structure having an air layer inside.
  • the outer wall of the housing includes a front wall, a back wall, a top wall, a bottom wall, a right side wall, and a left side wall, and the front wall, the back wall, the top wall, It is preferable that at least one of the bottom wall, the right side wall, and the left side wall includes the outer wall, the inner wall, and the partition wall.
  • the freezing temperature of the liquid is preferably higher than the freezing temperature of the brine solution.
  • the second tank has a shape in which at least a portion including the upper end gradually widens upward.
  • the cool box according to the present invention preferably further includes a thermometer that measures the temperature of the brine solution, and a control unit that controls cooling of the liquid by the cooling unit based on the temperature.
  • the material, thickness, and heat transfer area of the partition wall are set so that the brine solution is not completely frozen.
  • the cool box according to the present invention is provided in the casing, and includes a fin coil device having a plurality of plate-like fins and a heat exchange pipe penetrating the plate-like fins, and connecting the heat exchange pipe to the first tank. It is preferable to further include a pipe for circulating the brine solution in the heat exchange pipe.
  • the cool box according to the present invention further includes air blowing means for blowing air in the storage space between the plate fins.
  • the cool box according to the present invention further includes a plate facing the inner surface of the casing, and the fin coil device is provided between the inner surface and the plate.
  • a slit is formed in the plate.
  • the present invention it is possible to provide a refrigerator that can easily store an object to be cooled at less than 0 ° C. without being frozen.
  • FIG. 2 is a cross-sectional view (vertical cross-sectional view) taken along line AA of FIG. In FIG. 2, the caster 9 is not shown.
  • FIG. 2 is a cross-sectional view (cross-sectional view) taken along line BB in FIG. It is a cross-sectional view which shows the modification of the cooling holding structure of the wall of a cool box. It is a longitudinal cross-sectional view which shows the modification of the cooling holding structure of the wall of a cool box. In FIG. 5, the caster 9 is not shown. It is a perspective view of the cool box which concerns on other embodiment of this invention.
  • FIG. 8 is a CC cross-sectional view (transverse cross-sectional view) of FIG. 7. It is a longitudinal cross-sectional view which shows the modification of the cool box of FIG.
  • FIG. 10 is a cross-sectional view (cross-sectional view) taken along the line CC of FIG. 9. It is a schematic sectional drawing of a cold storage vehicle provided with the cold storage which concerns on this invention.
  • FIG. 1 shows the external appearance of the cool box 1 according to an embodiment of the present invention
  • FIGS. 2 and 3 show the internal structure of the cool box 1.
  • the cold storage 1 includes at least a housing 2 having a storage space S for the object to be cooled inside.
  • casing 2 is not specifically limited, In this embodiment, it is a rectangular parallelepiped, and the inner side of the wall which makes the external shape of the housing
  • the storage space S may be provided with multistage shelves in order to increase the storage capacity, and the size of the storage space S with respect to the housing 2 is not particularly limited.
  • the object to be stored in the storage space S is kept at a temperature lower than 0 ° C. and stored without freezing, and the quality can be maintained for a long time, for example, fresh vegetables, seafood, livestock, etc. Examples include food, organs and organs for transplantation, and blood.
  • the refrigerator 1 which supplies a refrigerant
  • the brine solution is an antifreeze solution having a freezing point of less than 0 ° C.
  • the outer wall of the housing 2 includes a front wall 2a and a back wall 2b facing each other, a top wall 2c and a bottom wall 2d facing each other, and a right side wall 2e and a left side wall 2f facing each other.
  • Four casters 9 are attached to the bottom wall 2d, and the cool box 1 can be self-propelled.
  • the front wall 2a is a door for opening the storage space S, and is attached to the left side wall 2f so as to be openable and closable by known means, although not shown.
  • a handle 10 for opening and closing is provided on the outer surface of the front wall 2a.
  • a part of the wall forming the outer shape of the housing 2 has a cooling and holding structure for cooling and holding the inside of the storage space S to a temperature of less than 0 ° C.
  • the back wall 2b, the right side wall 2e, and the left side wall 2f among the walls forming the outer shape of the housing 2 have a cooling holding structure.
  • a heat insulating aluminum coating foamed resin for example, a foamed resin such as foamed polystyrene, a fiber reinforced plastic (FRP), or a heat insulating wall with an internal vacuum
  • a wall structure having a cooling holding structure may be used similarly to the back wall 2b, the right side wall 2e, and the left side wall 2f.
  • the back wall 2b, the right side wall 2e and the left side wall 2f having the cooling holding structure are respectively an outer wall 3, an inner wall 4 having thermal conductivity facing the storage space S, and an outer wall. 3 and the partition wall 5 having thermal conductivity provided between the inner wall 4 and the inner wall 4.
  • a first tank T1 is provided between the inner wall 4 and the partition wall 5 to store a brine solution L1 that is not frozen at 0 ° C.
  • a second tank T2 is stored between the outer wall 3 and the partition wall 5 to store a liquid L2.
  • the 2nd tank T2 is provided with the cooling means 6 for cooling the accommodated liquid L2 to less than 0 degreeC.
  • the walls 2b, 2e and 2f having the cooling holding structure are provided with a waterproof wall 3a on the inner surface of the outer wall 3 and at the positions corresponding to the bottoms of the first tank T1 and the second tank T2 on the upper surface of the bottom wall 2d.
  • a waterproof wall 3b is lined.
  • the outer wall 3 is common to the back wall 2b, the right side wall 2e, and the left side wall 2f, and a flat plate bent in a U shape is used.
  • a combination of three flat plates in a U shape may be used as the outer wall 3.
  • the waterproof wall 3a, the partition wall 5, and the inner wall 4 are formed by bending flat plates into a U shape, but may be a combination of three flat plates in a U shape.
  • the outer peripheral surface of the waterproof wall 3 a is affixed to the inner peripheral surface of the outer wall 3.
  • the partition wall 5 is slightly smaller than the outer wall 3 and is disposed inside the outer wall 3.
  • the inner wall 4 is slightly smaller than the partition wall 5 and is disposed inside the partition wall 5.
  • the cooling means 6 is slightly smaller than the outer wall 3 and is disposed between the waterproof wall 3 a and the partition wall 5. Furthermore, the waterproof wall 3c for preventing the liquid etc. in the 1st tank T1 and the 2nd tank T2 from leaking in the edge part of the waterproof wall 3a, the partition 5, and the inner wall 4 is provided.
  • a U-shaped tank composed of the inner wall 4 and the waterproof walls 3a, 3b, 3c is formed, and then the partition wall 5 is formed between the inner wall 4 and the waterproof wall 3a. May be arranged.
  • a U-shaped first tank T1 including the inner wall 4 and the partition wall 5 and a U-shaped second tank T2 that is slightly larger than the first tank T1 including the partition wall 5 and the waterproof wall 3a are separately prepared in advance. Then, the first tank T1 may be fitted into the second tank T2, and the two may be bonded together.
  • the partition wall 5 has a two-layer structure.
  • the walls 2b, 2e and 2f having the cooling and holding structure are provided with an L-shaped or U-shaped waterproof wall 3a, a flat waterproof wall 3b, a flat plate on the individual outer walls 3.
  • the partition wall 5 and the inner wall 4, the right side wall 2e, and the left side wall 2f can be configured by pasting together a panel in which the waterproof wall 3c is integrated into a U shape.
  • the outer wall 3, the inner wall 4 and the partition wall 5 are all provided perpendicular to the bottom wall 2d, but the angle of the outer wall 3, the inner wall 4 and the partition wall 5 with respect to the bottom wall 2d is 90 °. It is not limited to.
  • the outer wall 3 is preferably formed of a heat-insulating material so that heat of the outside air is not transmitted to the inside of the housing 2.
  • a heat-shielding aluminum coating foamed resin a foamed resin such as foamed polystyrene, fiber reinforced plastic (FRP), and a heat insulating wall whose inside is evacuated.
  • the inner wall 4 is preferably formed of a material having a high heat transfer coefficient. Examples of such materials include copper, titanium, stainless steel, aluminum, and aluminum alloy.
  • the heat transfer coefficient of the partition wall 5 is not particularly limited, in the present embodiment, it is formed of a material having a high heat transfer coefficient, and can be formed of a material such as copper, titanium, stainless steel, aluminum, or an aluminum alloy.
  • the partition wall 5 may have a single layer structure or a multilayer structure.
  • the brine solution L1 accommodated in the first tank T is an aqueous solution that does not freeze at 0 ° C. but freezes at a predetermined temperature below 0 ° C.
  • the freezing temperature of the brine solution L1 may be equal to or lower than the set cool temperature of the storage object, that is, the set temperature of the storage space S.
  • the brine solution L1 is an aqueous solution that freezes at a temperature of less than 0 ° C. to ⁇ 5 ° C., and for example, an aqueous solution in which an organic solvent such as a salt, organic acid salt, saccharide, or alcohol is dissolved can be used. .
  • the solute of the brine solution L1 is not particularly limited as long as it lowers the freezing point of water, but is preferably one that does not adversely affect the human body.
  • salt, alcohol, sucrose, etc. can be used.
  • the freezing temperature of the brine solution L1 can be set to a desired temperature by adjusting the solute concentration.
  • the salts used for the solute are not particularly limited as long as they are salts that are harmless to the human body, such as sodium chloride, calcium chloride, phosphate, sulfite, and the like.
  • the salt concentration of the brine solution L1 is not particularly limited as long as the freezing temperature of the brine solution L1 is equal to or lower than the set temperature of the storage space S.
  • the salt concentration when the brine solution L1 is ethanol is used. Is 2.3 wt% (freezing point ⁇ 0.1 ° C.) to 12.9 wt% (freezing point ⁇ 5.0 ° C.).
  • the inlet 11 is provided in the upper part of the first tank T1, and the outlet 12 is provided in the lower part.
  • the first tank T may be filled with the brine solution L1.
  • the liquid L2 stored in the second tank T2 is not particularly limited, and may be the same as or different from the brine solution L1.
  • a liquid having a freezing temperature higher than that of the brine solution L1 is used as the liquid L2. More specifically, the freezing temperature of the liquid L2 is preferably higher than the set temperature of the storage space S and less than 0 ° C.
  • the set temperature of the storage space S is ⁇ 1.0 ° C.
  • a solution in which an antibacterial agent or a bactericidal agent is dissolved in a frozen liquid that is as close to pure water as possible to be frozen at 0 ° C. is used.
  • the freezing temperature of the liquid L2 is higher than the set temperature of the storage space S, for example, ⁇ 0.5 ° C. Further, the growth of microorganisms in the liquid L2 can be suppressed by the antibacterial agent or the bactericidal agent.
  • a maintenance inlet 13 and outlet 14 are provided at the upper and lower parts of the second tank T2, respectively. Since the volume of the liquid L2 increases when frozen, the amount of the liquid L2 is preferably smaller than the capacity of the second tank T2. Normally, the liquid L2 stored in the second tank T2 is not exchanged.
  • the cooling means 6 is not particularly limited as long as it has a function of cooling and freezing the liquid L2.
  • the cooling means 6 may have a configuration including a refrigerant coil through which a refrigerant flows and a heat transfer panel formed so as to cover the periphery of the refrigerant coil.
  • a plurality of protrusions may be formed on the surface of the heat transfer panel.
  • the material of the refrigerant coil and the heat transfer panel is not particularly limited, but a material having a high heat transfer property is preferable. As such a material, titanium, copper, stainless steel, aluminum, and alloys thereof can be used. Further, a corrosion-preventing paint or resin may be formed on the surface of the heat transfer panel.
  • the refrigerator 7 is connected to the refrigerant coil of the cooling means 6 through the refrigerant pipe 7a.
  • the refrigerant pipe 7a is covered with a heat insulating material, and by supplying the refrigerant from the refrigerator 7 to the refrigerant coil, the refrigerant flows into the refrigerant coil and the surface temperature of the heat transfer panel is lowered. Thereby, the liquid L2 can be frozen.
  • the installation position of the refrigerator 7 is not specifically limited, For example, you may attach to the outer surface of the back wall 2b of the housing
  • the thermometer 8 has a main body provided in the storage space S, and the tip of a sensor for detecting temperature passes through the inner wall 4 and reaches the first tank T1. Thereby, the thermometer 8 can measure the temperature of the brine solution L1.
  • the installation position of the main body of the thermometer 8 is not particularly limited.
  • thermometer 8 can transmit the measured temperature of the brine solution L1 to the controller by wired or wireless communication (wireless communication in FIG. 2) from the main body, and the controller is based on the temperature, The operating state of the refrigerator 7, that is, cooling of the liquid L2 by the cooling means 6 is controlled.
  • the set cold storage temperature of the storage object is ⁇ 1.0 ° C.
  • the freezing temperature of the brine solution L1 is less than ⁇ 1.0 ° C.
  • the freezing temperature of the liquid L2 is ⁇ 0.5 ° C.
  • the freezing temperature of the liquid L2 is not particularly limited as long as it is less than 0 ° C.
  • the objects to be stored are stored in the storage space S, and the front wall 2a that is a door is closed.
  • the refrigerator 7 is operated and the refrigerant is supplied to the refrigerant coil of the cooling means 6.
  • the liquid L2 is cooled to less than 0 ° C., and the liquid L2 is gradually frozen.
  • heat exchange is performed between the liquid L2 and the brine solution L1 via the partition wall 5, and the brine solution L1 is cooled to less than 0 ° C.
  • the controller of the refrigerator 7 stops supplying the refrigerant from the refrigerator 7 Let Thereby, cooling of the liquid L2 by the cooling means 6 stops.
  • the inner wall 4 is formed of a material having a high heat transfer coefficient, heat is quickly exchanged between the brine solution L1 and the air in the storage space S, and the temperature in the storage space S is the temperature of the brine solution L1. Is almost equal to As a result, the temperature in the storage space S becomes ⁇ 1.0 ° C.
  • the controller of the refrigerator 7 operates the refrigerator 7 and restarts the cooling of the liquid L2 by the cooling means 6. Thereafter, when the temperature of the brine solution L1 becomes ⁇ 1.0 ° C., the controller of the refrigerator 7 stops the refrigerator 7. Thereafter, the refrigerator 7 repeats the operation cycle of the refrigerator 7 based on the temperature of the brine solution L1.
  • the inside of the storage space S is cooled by the brine solution L1 cooled to a desired temperature of less than 0 ° C.
  • the brine solution L1 has less temperature unevenness than the air in the storage space S with temperature unevenness depending on the position, the temperature of the brine solution L1 is accurately adjusted to an arbitrary temperature not lower than the freezing temperature and lower than 0 ° C. Can do. Therefore, the object to be cooled can be easily stored without being frozen at less than 0 ° C.
  • the freezing temperature of the liquid L2 is ⁇ 0.5 ° C. higher than ⁇ 1.0 ° C. Therefore, when the temperature of the brine solution L1 becomes ⁇ 1.0 ° C. and the cooling of the liquid L2 is stopped, the liquid L2 in the second tank T2 is also cooled to about ⁇ 1.0 ° C. It has become.
  • a lot of heat energy called latent heat is required. Therefore, even if the cooling of the liquid L2 is stopped, it takes time until the frozen body is completely dissolved, and the temperature rise of the brine solution L1 can be suppressed until the frozen body is dissolved. Furthermore, the frozen body has an effect of blocking heat entering from outside air.
  • the temperature in the brine solution L1 and the storage space S can be kept low for a long time even after the power supply to the cool box 1 is stopped.
  • the cold storage 1 can be transported for a long time.
  • the liquid L2 in the second tank T2 is cooled to about ⁇ 1.0 ° C., which is the set cold temperature of the object to be stored, but the cooling temperature of the liquid L2 may be further reduced (for example, ⁇ 10 ° C.).
  • the time until the frozen body in the second tank T2 is thawed to become the liquid L2 is further increased, so that the cool keeping duration can be extended.
  • the partition wall 5 may be covered with a material having a high heat transfer property, and the heat transfer area of the partition wall 5 may be adjusted to be small.
  • the partition walls 5 may have a multilayer structure having an air layer inside, such as pair glass.
  • the cool box 1 since the volume of the liquid L2 increases due to freezing, high pressure is likely to be applied to the outer wall 3 and the partition wall 5 forming the second tank T2. Therefore, in the cool box 1, it is preferable to form the part which contacts the 2nd tank T2 of the outer wall 3 with a flexible material. Thereby, even if the liquid L2 freezes, it can deform
  • the second tank T2 may have a shape that gradually widens upward.
  • the width of the second tank T2 (distance between the partition wall 5 and the outer wall 3) increases as it goes upward by providing the partition wall 5 so that the upper end tilts inward (storage space S side) from the lower end. I am doing so.
  • the width of the second tank T2 is gradually widened upward in the entire height direction, but only the portion including at least the upper end of the second tank T2 has a width upward. It is good also as a shape which spreads gradually.
  • the cool box 1 has a structure in which the front wall of the casing can be opened and closed
  • the present invention can be used as long as the structure has at least a casing having a storage space for the object to be cooled inside. It is not limited to this, For example, you may comprise like cold storage 1 'shown in FIG.
  • the casing that forms the outer shape of the cool box 1 includes a front wall 2a and a back wall 2b, opposed top wall 2c and bottom wall 2d, opposed right side wall 2e and left side wall.
  • the top wall 2c is detachable.
  • the front wall 2a, the back wall 2b, the right side wall 2e, and the left side wall 2f have the same cooling holding structure as described above. That is, the front wall 2a, the back wall 2b, the right side wall 2e, and the left side wall 2f include an outer wall 3, an inner wall 4, and a partition wall 5 provided between the outer wall 3 and the inner wall 4, and between the inner wall 4 and the partition wall 5.
  • Constitutes a first tank T1 for containing the brine solution L1 and a space between the outer wall 3 and the partition wall 5 constitutes a second tank T2 for containing the liquid L2.
  • a cooling means 6 is provided between the partition wall 5 and the outer wall 3.
  • FIG. 7 and 8 show the internal structure of a cold box 1a according to another embodiment of the present invention.
  • the basic configuration of the cool box 1a shown in FIG. 7 and FIG. 8 is the same as the configuration of the cool box 1 shown in FIG. 2 and FIG. 3, and here, the same reference numerals are given to the corresponding components. Detailed description is omitted.
  • the cool box 1 a of the present embodiment is provided with a cooling holding structure only on the back wall 2 b, and instead, the fin coil device 20, the pipe 23, Further, a pump 24 and a blower (blower unit) 25 are further provided.
  • the cooling and holding structure of the back wall 2b is the same as that shown in FIGS.
  • the fin coil device 20 is provided in the housing 2 of the cool box 1 a and includes a plurality of plate-like fins 21 and a heat exchange tube 22 that penetrates the plate-like fins 21.
  • the fin coil device 20 is attached to the right side wall 2e and the left side wall 2f of the housing 2.
  • the position where the fin coil device 20 is attached is not limited to this.
  • the fin coil device 20 may be attached to at least one of the front wall 2a, the back wall 2b, the top wall 2c, and the bottom wall 2d.
  • the plate-like fins 21 have a thin plate shape extending in the height direction of the cool box 1a, and a plurality of plate-like fins 21 are parallel to each other with a predetermined interval between the right side wall 2e and the left side wall 2f. It is attached to become.
  • the plate-like fins 21 are preferably formed of a material having high thermal conductivity. Examples of such materials include copper, copper alloy, aluminum, aluminum alloy, titanium, titanium alloy, and stainless steel.
  • the heat exchange tube 22 extends in the height direction of the cool box 1 a while meandering, and vertically penetrates the main surface of the plurality of plate-like fins 21.
  • the heat exchange tube 22 is also preferably formed of a material having high thermal conductivity, and may be formed of the same material as the plate-like fins 21.
  • the pipe 23 is connected to both ends of the heat exchange pipe 22, and connects the heat exchange pipe 22 to the first tank T1.
  • the pump 24 circulates the brine solution in the first tank T1 in the heat exchange tube 22.
  • the pipe 23 and the pump 24 may be provided in the storage space S, or part or all of them may be embedded in the wall of the housing 2.
  • the blower 25 blows the air in the storage space S between the plurality of plate-like fins 21.
  • a small fan for example, a bladed fan such as a pressure ventilation fan, a sirocco fan, a turbo fan, a limit load fan, or the like can be used.
  • the fin coil device 20 is provided in the housing 2, and the brine solution in the first tank T1 is circulated through the heat exchange pipe 22, whereby the plate fins 21 and the heat exchange are performed.
  • Heat exchange with the air in the storage space S can be performed via the surface of the tube 22.
  • the fin coil device 20 by reducing the distance between the plate-like fins 21 and increasing the number of the plate-like fins 21, the area for heat exchange with the air in the storage space S can be easily increased. Therefore, since the air in the storage space S can be efficiently cooled by the fin coil device 20, even when the cooling holding structure is provided only on the back wall 2b, the temperature in the storage space S is sufficiently low. It can be.
  • the air in the storage space S is blown between the plate-like fins 21 by the blower 25, so that the cooled air near the surfaces of the plate-like fins 21 and the heat exchange tubes 22 is efficiently put into the storage space S. It can be circulated. Thereby, the cooling effect in the storage space S can be further enhanced.
  • the fin coil device 20 and the like are installed without providing a cooling holding structure on the right side wall 2e and the left side wall 2f.
  • the wall having the cooling and holding structure is heavier because the brine solution L1 and the liquid L2 are accommodated in the first tank T1 and the second tank T2, respectively.
  • the total weight of the fin coil device 20, the pipe 23, the pump 24, and the blower 25 is generally smaller than the total weight of the brine solution L1 and the liquid L2. Therefore, compared with the cool box 1 shown in FIGS. 2 and 3, the cool box 1 a of the present embodiment can realize a cooling effect equivalent to or higher than that of the storage space S and can reduce the weight.
  • the structure of the fin coil apparatus 20 is not limited to the above-mentioned thing, All the well-known fin coil apparatuses can be used.
  • the back wall 2b may have a cooling holding structure shown in FIG.
  • 9 and 10 show the internal structure of a cold box 1a 'according to a modification of the cold box 1a.
  • the cool box 1a ′ further includes a plate 26 facing the inner surface of the housing 2, and the fin coil device 20 includes the inner surface of the casing 2. And the plate 26. Specifically, two plates 26 are provided so as to face the right side wall 2e and the left side wall 2f, respectively, between the right side wall 2e and one plate 26, and between the left side wall 2f and the other plate. The fin coil device 20 is provided between each of them.
  • the plate 26 is a flat plate having a rectangular shape in plan view.
  • the material of the board 26 is not particularly limited, and can be selected according to the use of the cool box 1a ′ and the size of the storage space S.
  • the plate 26 may be formed of plastic having a heat insulating effect, or may be formed of stainless steel, copper, copper alloy, aluminum, aluminum alloy, titanium or the like having a heat transfer effect.
  • the plate 26 serves as a partition to separate the fin coil device 20 from the storage space S, and the temperature around the fin coil device 20 is the center side of the storage space S. It becomes lower than the temperature.
  • the temperature difference between the air near the surfaces of the plate-like fins 21 and the heat exchange pipe 22 and the brine liquid L1 flowing in the heat exchange pipe 22 can be reduced. Therefore, it becomes difficult for frost to adhere to the surfaces of the plate-like fins 21 and the heat exchange tubes 22, and a decrease in heat exchange efficiency due to frost can be prevented.
  • the plate 26 has a size that can cover the entire fin coil device 20 and is as close to the fin coil device 20 as possible.
  • the cold storage provided with the above-described fin coil device is suitable for a refrigerated showcase in which outside air easily enters the storage space and a cold storage vehicle having a large storage space. Then, the example which applied the cool box which concerns on this invention to the cool truck is demonstrated.
  • symbol is attached
  • FIG. 11 shows a cold car 30 equipped with a cold box 1b.
  • the cool box 1b further includes a fin coil device 20, a pipe 23, a pump 24, a blower 25, and a plate 26, and a slit 27 is formed in the plate 26.
  • the fin coil device 20 is attached to the top wall 2c, and the configuration thereof is substantially the same as that shown in FIGS.
  • a heat exchange pipe (not shown in FIG. 11) of the fin coil device 20 is connected to the first tank T1 of the front wall 2a by a pipe 23, and the heat exchange pipe has a pump 24 in the first tank T1. Brine solution is circulating.
  • the blower 25 blows air in the storage space S between a plurality of plate-like fins (not shown in FIG. 11) of the fin coil device 20.
  • the fin coil device 20 is provided between the inner surface of the top wall 2c and the plate 26. Air from the blower 25 flows between the inner surface of the top wall 2c and the plate 26 from the front wall 2a toward the back wall 2b, and part of the air flows out from the slit 27 to the lower storage space S.
  • the cool box 1b further includes the fin coil device 20, and a cooling holding structure is provided only on the upper surface wall 2c.
  • the cool box 1b can be lightened. Therefore, the cold storage vehicle 30 can carry a heavier thing and can improve transport efficiency.
  • the fin coil device 20 by covering the fin coil device 20 with the plate 26, it is possible to prevent the heat exchange efficiency from being lowered due to frost. Furthermore, by letting some of the air cooled by the fin coil device 20 flow downward from the slit 27, the air in the storage space S can be uniformly and efficiently cooled.
  • the back wall 2b constitutes a door that can be opened and closed.
  • the plate 26 is provided so that one end thereof extends to the vicinity of the back wall 2b, and the air that has passed through the fin coil device 20 flows downward near the back wall 2b. Thereby, when the back wall 2b is opened, the air flowing downward makes it difficult for outside air to enter the accommodation space S, and a rapid temperature rise of the air in the accommodation space S can be prevented.
  • the outer shape of the casing of the cool box is a rectangular parallelepiped, but is not limited thereto, and may be a cube, a tetrahedron, a cylinder, or the like.
  • the liquid L2 in the second tank T2 is frozen in order to cool the brine solution L1, but when the freezing temperature of the liquid L2 is lower than the cold storage temperature of the storage object, the liquid L2 may not be frozen. That is, the liquid L2 may be a liquid that does not freeze at 0 ° C., and the cooling unit 6 may be configured not to freeze the liquid L2.
  • the heat exchange efficiency with the brine solution L1 decreases. Therefore, for example, when the cool box is a refrigerated showcase, since outside air frequently flows into the storage space S, temperature control in the storage space S becomes difficult. Therefore, by making the liquid L2 a liquid that does not freeze even at the temperature of the refrigerant flowing inside the cooling means 6 (for example, ⁇ 20 ° C.), the heat exchange efficiency between the liquid L2 and the brine solution L1 does not decrease, and the inside of the storage space S Even if outside air flows in, the air in the accommodation space S can be quickly cooled.
  • liquid L2 is not frozen, the effect of cooling the animal after the supply of power to the cool box is reduced, but the refrigerated showcase is always used in an environment where power is supplied, so no problem occurs.
  • the cold storage according to the present invention can be applied to a cold storage vehicle, a cold storage container (air cargo, maritime container, railway container), a large cold storage, a refrigerated showcase, a small cold storage container, and the like.

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'objectif de la présente invention est de fournir une glacière capable de préserver facilement des articles à refroidir à des températures en dessous de 0 °C sans congeler lesdits articles. La glacière (1) de la présente invention comporte au moins un logement qui possède un espace de stockage (S) pour les articles à refroidir à l'intérieur, une partie (paroi de surface arrière (2b)) des parois qui forment le profil externe du logement comporte une paroi externe (3), une paroi interne thermiquement conductrice (4) faisant face à l'espace de stockage (S) et une paroi de séparation thermiquement conductrice (5) ménagée entre la paroi externe (3) et la paroi interne (4). Un premier réservoir (T1) est formé entre la paroi interne (4) et la paroi de séparation (5) pour contenir une solution de saumure (L1) qui ne gèle pas à 0 °C et un second réservoir (T2) est formé entre la paroi externe (3) et la paroi de séparation (5) pour contenir un liquide (L2). Un moyen de refroidissement (6) est prévu dans le second réservoir (T2) pour refroidir le liquide contenu (L2) à une température inférieure à 0 °C.
PCT/JP2015/064313 2015-01-23 2015-05-19 Glacière WO2016117141A1 (fr)

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JP2016570473A JP6198975B2 (ja) 2015-01-23 2015-05-19 保冷庫
CN201580074201.9A CN107250691B (zh) 2015-01-23 2015-05-19 保冷库
KR1020177019881A KR102292586B1 (ko) 2015-01-23 2015-05-19 보냉고

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JP2015-011812 2015-01-23
JP2015011812 2015-01-23

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JP (1) JP6198975B2 (fr)
KR (1) KR102292586B1 (fr)
CN (1) CN107250691B (fr)
TW (1) TWI654401B (fr)
WO (1) WO2016117141A1 (fr)

Citations (3)

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JPS641378U (fr) * 1987-06-24 1989-01-06
WO2014103344A1 (fr) * 2012-12-27 2014-07-03 トッパン・フォームズ株式会社 Accessoire pour stockage à température constante et récipient de stockage le recevant
WO2015025675A1 (fr) * 2013-08-22 2015-02-26 富士電機株式会社 Refroidisseur

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Publication number Priority date Publication date Assignee Title
JPS6049740A (ja) 1983-08-31 1985-03-19 Susumu Kurita 生鮮食品の保存方法
JP2889600B2 (ja) * 1989-08-11 1999-05-10 三洋電機株式会社 低温庫
JPH08116869A (ja) 1994-10-27 1996-05-14 Hiyouon:Kk 超低温水処理による生鮮食品の保存方法
KR100189100B1 (ko) * 1994-11-11 1999-06-01 윤종용 고효율 독립냉각 싸이클을 가지는 냉장고의 제어방법
KR20080017609A (ko) * 2006-08-21 2008-02-27 친 쿠앙 루오 공기 냉각/가열 장치
CN101581511A (zh) * 2008-05-12 2009-11-18 凌建军 以液体作为吸冷介质的高效节能多功能制冷装置
KR20150132797A (ko) * 2014-05-18 2015-11-26 주식회사 리우스 축냉용량 제어가 가능한 축냉식 냉장 냉동 시스템

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS641378U (fr) * 1987-06-24 1989-01-06
WO2014103344A1 (fr) * 2012-12-27 2014-07-03 トッパン・フォームズ株式会社 Accessoire pour stockage à température constante et récipient de stockage le recevant
WO2015025675A1 (fr) * 2013-08-22 2015-02-26 富士電機株式会社 Refroidisseur

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TWI654401B (zh) 2019-03-21
CN107250691A (zh) 2017-10-13
TW201627622A (zh) 2016-08-01
KR102292586B1 (ko) 2021-08-23
JPWO2016117141A1 (ja) 2017-09-14
JP6198975B2 (ja) 2017-09-20
KR20170103831A (ko) 2017-09-13
CN107250691B (zh) 2020-09-18

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