KR20170103831A - Cooler box - Google Patents

Abstract

An object of the present invention is to provide a cold storage which can be easily stored without freezing the object to be cooled below 0 캜. The cold storage hearth (1) of the present invention is a cold storage containing at least a housing having a storage space (S) for insulated articles therein. A part of the wall (back wall (2b) An inner wall 4 having a thermal conductivity facing the storage space S and a partition wall 5 having thermal conductivity provided between the outer wall 3 and the inner wall 4. [ A first tank T1 for receiving the brine solution L1 which is not frozen at 0 占 폚 is formed between the inner wall 4 and the partition wall 5 and a liquid L2 is formed between the outer wall 3 and the partition wall 5, (T2) for accepting the second set of instructions. In the second tier (T2), a cooling means (6) for cooling the received liquid (L2) to below 0 ° C is provided.

Description

COOLER BOX}

The present invention relates to a cold storage which can be stored at a temperature of less than 0 캜 and without freezing.

For example, foods such as fresh vegetables, aged fish and shellfish, livestock, and the like, organs such as transplants, organs, and blood, are cooled to a temperature of less than 0 ° C, It is known that the time is extended logarithmically as the temperature is lower. However, if it is attempted to maintain the cold storage temperature near the freezing temperature by the electric control, the temperature becomes unstable, the structure of the cold storage is frozen and damaged, and the quality is remarkably lowered, and there is a fear that the cold storage can not be used. Further, in order to keep the temperature constant at the freezing limit temperature by the electric control, there is a disadvantage that the electric control device becomes expensive because of the high precision control. Therefore, in order to prevent freezing, a method of setting the cooling temperature higher than the freezing limit temperature was generally used.

On the other hand, Patent Document 1 discloses a method of immersing and preserving fresh food in preserved water at -2 ° C to 0 ° C. Patent Document 2 discloses a method of preserving fresh food by cooling treatment in ultra-low temperature water maintained at 0 deg. C or less in a non-frozen state.

However, in the invention described in Patent Document 1, there is a problem that since the object to be contained is wet, it takes time to remove moisture after storage. Further, in the invention described in Patent Document 2, there is a problem that the temperature is excessively lowered and the leading of fresh food is lowered.

Patent Document 1: JPS60-49740A Patent Document 2: JPH8-116869A

The inventor of the present invention invented a cold storage apparatus according to the present invention as means for solving this problem easily.

An object of the present invention is to provide a cold storage which can be easily stored without freezing the object to be cooled below 0 캜.

A cold storage refrigerator according to the present invention is a cold storage refrigerator having at least a housing having a storage space for insulated articles therein, wherein a part of the wall constituting the outer shape of the housing includes an outer wall, an inner wall having thermal conductivity facing the storage space, And a thermal conductive barrier provided between the outer wall and the inner wall, wherein the inner wall and the barrier wall form a first vessel for receiving a brine solution which is not frozen at 0 ° C, And a second tank for containing the liquid is provided between the outer wall and the partition, and the second tank is provided with cooling means for cooling the stored liquid to below 0 ° C.

In the cold storage trolley according to the present invention, it is preferable that the cooling means froze the liquid.

In the cold storage trough according to the present invention, the liquid may be a liquid that is not frozen at 0 ° C, and the cooling means may not freeze the liquid.

The cold storage hearth according to the present invention is formed of a material selected from the materials which are coated with cold-resistant rubber, plastics, foamed resin, ceramics and glass, and copper, titanium, stainless steel, aluminum and aluminum alloy, Layer structure having an air layer.

According to the present invention, the outer wall of the housing comprises a front wall, a rear wall, an upper wall, a bottom wall, a right wall, and a left wall, and the front wall, the rear wall, At least one of the bottom wall, the right side wall, and the left side wall may comprise the outer wall, the inner wall, and the partition wall.

In the cold storage trough according to the present invention, the freezing temperature of the liquid is preferably higher than the freezing temperature of the brine solution.

In the cold storage hearth according to the present invention, it is preferable that at least the portion including the upper end of the second set has a shape gradually increasing in width toward the upper side.

The cold storage trolley according to the present invention preferably further comprises a thermometer for measuring the temperature of the brine solution and a control means for controlling the cooling of the liquid by the cooling means based on the temperature.

In the cold storage trough according to the present invention, it is preferable that the material, thickness and heat transfer area of the partition wall are set so that the brine solution is not completely frozen.

A cold storage refrigerator according to the present invention includes a pin coil device installed in the housing and having a plurality of plate-like fins and a heat exchange tube passing through the plate-like fins, a pipe connecting the heat exchange tube to the first set, And a pump for circulating the brine solution in the heat exchange tube.

Preferably, the refrigerator according to the present invention further comprises a blowing means for blowing air in the storage space between the plate-shaped pins.

It is preferable that the cold storage holder according to the present invention further comprises a plate facing the inner surface of the housing, and the fin coil device is preferably provided between the inner surface and the plate.

In the cold storage hearth according to the present invention, the slit is preferably formed on the plate.

According to the present invention, it is possible to provide a cold storage which can be easily stored without freezing the object to be cooled below 0 캜.

1 is a perspective view of a cold storage refrigerator according to an embodiment of the present invention;
Fig. 2 is a cross-sectional view taken along the line AA of Fig. 1 (the illustration of the caster 9 is omitted in Fig. 2);
3 is a BB sectional view (cross-sectional view) of Fig. 1;
4 is a cross-sectional view showing a modified example of a cooling maintaining structure of a wall of a cold storage hearth;
5 is a vertical sectional view showing a modification of the cooling maintaining structure of the wall of the cold storage trough (the illustration of the caster 9 is omitted in Fig. 5);
6 is a perspective view of a cold storage refrigerator according to another embodiment of the present invention;
7 is a longitudinal sectional view of a cold storage refrigerator according to another embodiment of the present invention;
Figure 8 is a cross-sectional view of CC of Figure 7 (cross-sectional view);
Fig. 9 is a longitudinal sectional view showing a modified example of the cold storage trough of Fig. 7; Fig.
10 is a CC sectional view (cross-sectional view) of FIG. 9;
11 is a schematic sectional view of a cold storage car including a cold storage compartment according to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the following embodiments.

Fig. 1 shows an appearance of a cold storage chamber 1 according to an embodiment of the present invention, and Figs. 2 and 3 show the internal structure of the cold storage chamber 1. Fig.

The cold storage container (1) includes at least a housing (2) having a storage space (S) for insulated water inside. The shape of the housing 2 is not particularly limited, but is a rectangular parallelepiped in this embodiment, and the inside of the wall forming the outer shape of the housing 2 is the storage space S. A multi-stage shelf may be provided in the storage space S to increase the storage amount, and the size of the storage space S with respect to the housing 2 is not particularly limited. The cooled water stored in the storage space S can be maintained for a long period of time by being stored at less than 0 ° C and without being frozen. For example, fresh foods such as fresh vegetables, seafood, livestock products, Organs, and blood. The refrigerator compartment 1 is provided with a refrigerator 7 for supplying a refrigerant to a cooling means 6 to be described later on the housing 2 and a brine solution L1 A thermometer 8 for measuring the temperature is provided. A brine solution is a float solution with a freezing point of less than 0 ° C.

The wall constituting the external shape of the housing 2 is composed of the front wall 2a and the rear wall 2b opposed to each other and the upper wall 2c and the lower wall 2d facing each other and the right side wall 2e and the right side wall 2e facing each other, And a face wall 2f. Four casters 9 are mounted on the bottom wall 2d so that the cold storage container 1 can freely travel. The front wall 2a is a door for opening the storage space S and is mounted on the left side wall 2f so as to be openable and closable by means not shown. An opening / closing handle 10 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 at a temperature of less than 0 캜. In the present embodiment, the back wall 2b, the right side wall 2e, and the left side wall 2f of the wall forming the outer shape of the housing 2 have a cooling and holding structure. In the present embodiment, the front wall 2a, the top wall 2c and the bottom wall 2d are made of, for example, a foamed resin such as a heat-shielded aluminum-coated foamed resin or foamed polystyrene, a fiber-reinforced plastic (FRP) But it may be a wall structure having a cooling maintaining structure like the back wall 2b, the right side wall 2e and the left side wall 2f.

2 and 3, the rear wall 2b, the right side wall 2e and the left side wall 2f including the cooling and holding structure each have a thermal conductivity (thermal conductivity) facing the outer wall 3 and the storage space S, And a partition wall 5 having a thermal conductivity provided between the outer wall 3 and the inner wall 4. The heat- The space between the inner wall 4 and the partition wall 5 constitutes the first set T1 for accommodating the brine solution L1 which is not frozen at 0 DEG C and the space between the outer wall 3 and the partition wall 5 forms the liquid L2 (T2) for accepting the second set of instructions. In the second (T2), a cooling means 6 for cooling the received liquid L2 to below 0 ° C is provided.

The walls 2b, 2e and 2f including the cooling and holding structure are constructed such that the waterproof wall 3a is adhered to the inner surface of the outer wall 3 inward and the inner wall of the first set T1 of the upper surface of the bottom wall 2d And the waterproof wall 3b is inwardly attached to a position corresponding to the bottom of the second chamber T2.

3, the outer wall 3 is common to the rear wall 2b, the right side wall 2e and the left side wall 2f, and the flat wall is folded in a U-shape to be bent . In addition, the outer wall 3 may be formed by combining three flat plates in a C shape. Similarly, the waterproofing wall 3a, the partition wall 5, and the inner wall 4 are formed by folding and flattening the flat plate into a U shape, but it is also possible to use a combination of three flat plates in a C shape. The outer peripheral surface of the waterproofing wall 3a is attached to the inner peripheral surface of the outer wall 3. The partition wall 5 is smaller than the outer wall 3 and disposed inside the outer wall 3. The inner wall 4 is smaller than the partition wall 5 and is arranged inside the partition wall 5. The cooling means 6 is smaller than the outer wall 3 and is disposed between the waterproof wall 3a and the partition 5. [ A waterproof wall 3C is provided at the end portions of the waterproofing wall 3a, the partition wall 5 and the inner wall 4 so as to prevent the liquid in the first and second sets T1 and T2 from leaking out .

As a method of forming the first (T1) and second (T2) layers, a C-shaped trough consisting of the inner wall 4 and the waterproof walls 3a, 3b and 3c is formed, The partition wall 5 may be disposed between the waterproof walls 3a. Shaped first trough T1 made of the inner wall 4 and the partition wall 5 and a first trough T1 made of the partition wall 5 and the waterproof wall 3a or the like, The second group T2 may be prepared separately in advance, the first group T1 may be sandwiched in the second group T2, and both may be put together. In this case, the partition 5 has a two-layer structure.

4, the walls 2b, 2e, and 2f having the cooling and holding structure are formed by laminating waterproof walls 3a in the form of an L-shaped or C-shaped plate on the respective outer walls 3, A panel in which the waterproof wall 3C is integrated with the wall 3b, the partition wall 5 in the form of a flat plate and the inner wall 4, the right side wall 2e and the left side wall 2f, You may.

In the present embodiment, the outer wall 3, the inner wall 4, and the partition wall 5 are provided perpendicular to the bottom wall 2d. However, the outer wall 3, the inner wall 4, The angle with respect to the bottom wall 2d is not limited to 90 degrees.

It is preferable that the outer wall 3 is formed of a material having heat insulation so that the heat of the outside air is not transmitted to the inside of the housing 2. [ As such a material, for example, heat-shielding aluminum-coated foamed resin, foamed resin such as expanded polystyrene, fiber-reinforced plastic (FRP), and an insulating wall in which the inside is vacuumed.

The inner wall 4 is preferably formed of a material having a high heat transfer coefficient. As such a material, copper, titanium, stainless steel, aluminum, aluminum alloy and the like can be mentioned.

The heat transfer coefficient of the partition 5 is not particularly limited, but 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 5 may have a single-layer structure or a multi-layer structure.

The brine solution (L1) contained in the first tank (T) is an aqueous solution which is not frozen at 0 ° C but is frozen at a predetermined temperature of less than 0 ° C. The freezing temperature of the brine solution L1 may be equal to or lower than the set cooling temperature of the object to be drawn, i.e., the set temperature of the containing space S. In this embodiment, the brine solution (L1) is an aqueous solution which is frozen at a temperature of less than 0 DEG C to -5 DEG C, and for example, an aqueous solution in which an organic solvent such as a salt, an organic acid salt, a saccharide, . The solute of the brine solution (L1) is not particularly limited as long as it lowers the solidifying point of water, but it is preferable that it does not adversely affect the human body. For example, salt, alcohol, sucrose and the like can be used. The freezing temperature of the brine solution (L1) can be set to a desired temperature by adjusting the solute concentration.

When the brine solution (L1) is a salt aqueous solution, the salts usable as the solute are not particularly limited as long as they are salts free from human health, such as sodium chloride, calcium chloride, phosphate, and sulfite. 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 containing space S. In the present embodiment, In the case of ethanol, the salt concentration is 2.3 wt% (freezing point-0.1 캜) to 12.9 wt% (freezing point -5.0 캜).

As shown in Fig. 2, an injection port 11 is formed at an upper portion of the first tank T1, and a discharge port 12 is formed at a lower portion. In this embodiment, since the brine solution L1 is not frozen, the first tank T may be filled with the brine solution L1.

The liquid L2 contained in the second tank T2 is not particularly limited and may be the same as or different from the brine solution L1. In this embodiment, the liquid L2 has a freezing temperature higher than the freezing temperature of the brine solution L1. 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 占 폚.

In the present embodiment, when the set temperature of the storage space S is -1.0 DEG C, a solution obtained by dissolving an antimicrobial agent or a bactericide in a frozen liquid close to pure water frozen at 0 DEG C as possible is used as the liquid L2 , The freezing temperature of the liquid L2 is higher than the set temperature of the storage space S, for example, -0.5 ° C. In addition, the microbial growth in the liquid L2 can be suppressed by the antimicrobial agent or the microbicide.

At the top and bottom of the second tank T2, there are provided an inlet 13 for the maintenance and an outlet 14 respectively. Since the volume of the liquid L2 increases during freezing, it is preferable that the amount of the liquid L2 is smaller than that of the second set T2. In addition, normally, the liquid L2 contained 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. For example, the cooling means 6 may have a refrigerant coil in which the refrigerant flows, and a heat transfer panel formed as covering 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 coolant coil and the heat transfer panel is not particularly limited, but a material having high thermoelectric effect is preferable. As such a material, titanium, copper, stainless steel, aluminum, and alloys thereof can be used. Further, a corrosion-resistant coating 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) via a refrigerant pipe (7a). The refrigerant pipe 7a is covered with a heat insulating material. By supplying the refrigerant from the freezer 7 to the refrigerant coil, the refrigerant flows into the refrigerant coil, and the surface temperature of the heat transfer panel drops. Thereby, the liquid L2 can be frozen. The installation position of the refrigerator 7 is not particularly limited and may be attached to the outer surface of the rear wall 2b, the right side wall 2e or the left side wall 2f of the housing 2, for example.

The thermometer 8 is provided in the housing space S and the tip of the sensor for detecting the temperature penetrates the inner wall 4 and reaches the first set T1. Thereby, the thermometer 8 can measure the temperature of the brine solution L1. The mounting position of the main body of the thermometer 8 is not particularly limited.

In the freezer 7, a controller (control means) for controlling the operation of the freezer 7 is incorporated. In the present embodiment, the thermometer 8 can transmit the temperature of the brine solution L1 measured by the wired or wireless communication (wireless communication in FIG. 2) from the main body to the controller, Thereby controlling the operating state of the refrigerator 7, that is, the cooling of the liquid L2 by the cooling means 6. [

A method of cooling and storing the object to be stored in the cold storage trolley 1 will now be described. Hereinafter, the set cold storage temperature of the object to be contained is set to -1.0 캜. The freezing temperature of the brine solution (L1) is less than -1.0 DEG C, and the freezing temperature of the liquid (L2) is -0.5 DEG C. The freezing temperature of the liquid L2 is not particularly limited as long as it is below 0 占 폚.

First, the brine solution L1 is housed in the first chamber T1 and the liquid L2 is housed in the second chamber T2. The housed object is stored in the storage space S, 2a.

Subsequently, the refrigerator 7 is operated to supply the refrigerant to the refrigerant coil of the cooling means 6. Thereby, the liquid L2 is cooled to less than 0 DEG C, and the liquid L2 is frozen in turn. The liquid L2 is subjected to heat exchange between the liquid L2 and the brine solution L1 through the partition wall 5 and the brine solution L1 is cooled to less than 0 占 폚.

Thereafter, when the temperature of the brine solution L1 measured by the thermometer 8 becomes -1.0 DEG C, which is the set refrigerating temperature of the object to be stored, the controller of the refrigerator 7 controls the supply of the refrigerant from the refrigerator 7 Stop. Whereby the cooling of the liquid L2 by the cooling means 6 is stopped.

Heat exchange is performed rapidly between the brine solution L1 and the air in the storage space S and the temperature in the storage space S is lower than the temperature of the brine solution L1 Lt; RTI ID = 0.0 > L1. ≪ / RTI > Thereby, the temperature in the storage space S becomes -1.0 占 폚.

Thereafter, when the temperature of the brine solution L1 rises to, for example, -0.5 DEG C, the controller of the refrigerator 7 operates the refrigerator 7 to cool the liquid L2 by the cooling means 6 Resume. Thereafter, when the temperature of the brine solution L1 becomes -1.0 DEG C, the controller of the refrigerator 7 stops the refrigerator 7. Thereafter, the refrigerator 7 repeats the start and stop cycles of the refrigerator 7 based on the temperature of the brine solution L1.

As described above, in the present embodiment, the inside of the storage space S is cooled by the brine solution L1 cooled to a desired temperature of less than 0 占 폚. Since the temperature difference of the brine solution L1 is small compared with the air in the storage space S having a temperature variation depending on the position, the temperature of the brine solution L1 is set to a certain temperature Can be adjusted accurately. Therefore, the object to be cooled can be easily stored without being frozen to less than 0 ° C.

Here, 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 deg. 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 deg. It is a frozen body. Here, in order for the frozen body to thaw to become the liquid L2, a large amount of heat energy called latent heat is required. Therefore, even if the cooling of the liquid L2 is stopped, it takes time to completely dissolve the frozen material, and the temperature rise of the brine solution L1 can be suppressed until the frozen material is dissolved. Further, the frozen body has an effect of cutting off the heat that enters from the outside air. Therefore, compared to the case where the brine solution L1 is cooled without freezing the liquid L2, the temperature in the brine solution L1 and the storage space S for a long time is maintained at a low temperature And the long-time transportation of the cold storage hearth 1 becomes possible.

In the present embodiment, the liquid L2 in the second tank T2 is cooled to about -1.0 DEG C, which is the set cooling temperature of the object to be stored. However, the cooling temperature of the liquid L2 may be further lowered (for example, -10 C). This makes it possible to extend the time required for the frozen material in the second tank T2 to be defrosted to become the liquid L2 after the power supply to the cold storage tank 1 is stopped, . On the other hand, in this case, the partition 5 is preferably made of a material capable of adjusting the thermoelectric effect so that the brine solution L1 is not frozen. As such a material, for example, a material which is coated with a cold-resistant rubber, a plastic, a foamed resin, a ceramic, a glass, etc., and copper, titanium, stainless steel, aluminum or an aluminum alloy can be employed. Alternatively, the barrier ribs 5 may be coated with a material having a high thermal conductivity, and the heat transfer area of the barrier ribs 5 may be adjusted to be small. Further, in order to reduce the thermal conductivity of the partition 5, the partition 5 may have a multi-layer structure having an air layer inside, such as a pair glass. By setting (controlling) the material, the thickness and the heat transfer area of the partition wall 5 as described above, the heat transfer rate of the partition wall 5 can be adjusted, the cooling capacity of the freeze body can be increased, and the brine solution L1 can be prevented from completely freezing can do.

Also, since the volume of the liquid L2 is increased by freezing, high pressure is likely to be applied to the outer wall 3 and the partition 5 forming the second tank T2. Therefore, in the cold storage tank 1, it is preferable to form the portion of the outer wall 3 which is in contact with the second tank T2 with a flexible material. Thereby, even if the liquid L2 is frozen, the second tank T2 can be deformed so as to extend to the outer wall 3, so that breakage of the second tank T2 can be prevented. Alternatively, even if the partition wall 5 is made of a flexible material, since the partition wall 5 is deformed toward the first tank T1 during freezing of the liquid L2, damage to the second tank T2 can be prevented have.

In order to prevent breakage of the second set T2 by freezing the liquid L2, as shown in Fig. 5, the second set T2 may be gradually widened in the upward direction. 5, the width of the second tank T2 (the distance between the partition wall 5 and the outer wall 3) is set to be higher than the upper end of the partition wall 5 As shown in Fig. Thereby, when the liquid L2 is frozen and becomes the frozen body, the volume increase of the frozen body is pushed to the wide portion of the upper portion of the second tank T2. Therefore, the pressure applied to the outer wall 3 and the partition 5 forming the second set T2 can be suppressed, and the damage of the second set T2 can be prevented. In FIG. 5, the width is gradually widened upward in the entire height direction of the second set T2. However, only the uppermost portion of the second set T2 is upwardly extended And the width may gradually increase.

The refrigerator compartment 1 according to the above-described embodiment has a structure in which the front wall of the housing can be opened and closed, but the present invention is not limited to this structure as long as the housing has a housing having a storage space for the object to be cooled therein. And may be configured as the cold storage hearth 1 'shown in Fig. The housing constituting the outer shape of the cold storage container 1 'has a front wall 2a and a rear wall 2b and opposite upper wall 2c and bottom wall 2d as in the cold storage bin 1 shown in Fig. And the upper face wall 2c is detachable, unlike the cold storage container 1, although it is composed of the opposed right side wall 2e and the left side wall 2f.

In Fig. 6, the tops of the rear wall 2b and the right side wall 2e are broken, and the inside of the right side wall 2e is seen. In the cold storage hearth 1 ', the front wall 2a, the rear wall 2b, the right side wall 2e and the left side wall 2f have the above-described cooling and holding structure. That is, the front wall 2a, the rear wall 2b, the right side wall 2e and the left side wall 2f are connected to the outer wall 3, the inner wall 4, and the outer wall 3 and the inner wall 4 And the partition wall 5 constitutes a first tank T1 for accommodating the brine solution L1 and the space between the outer wall 3 and the partition wall 5 constitutes a liquid (T2) for accommodating the second lens L2. A cooling means 6 is provided between the partition wall 5 and the outer wall 3.

Next, another embodiment of the present invention will be described. 7 and 8 show the internal structure of the cold storage container 1a according to another embodiment of the present invention. The basic configuration of the cold storage container 1a shown in Figs. 7 and 8 is the same as the configuration of the cold storage container 1 shown in Figs. 2 and 3, .

Compared with the cold storage tanks 1 shown in Figs. 2 and 3, the cold storage tanks 1a of the present embodiment are provided with cooling holding structures only in the rear wall 2b, A piping 23, a pump 24, and a blower (blowing means) The cooling holding structure of the rear wall 2b is the same as that shown in Figs. 2 and 3.

The pin coil device 20 is provided in the housing 2 of the cold storage container 1a and has a plurality of plate shaped fins 21 and a heat exchange tube 22 penetrating the plate shaped fins 21. [ In this embodiment, the pin coil device 20 is mounted on the right side wall 2e and the left side wall 2f of the housing 2. [ Further, the position where the fin coil device 20 is mounted is not limited to this. For example, the pin coil device 20 may be mounted on 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 show a thin plate shape extending in the height direction of the cold storage container 1a and a plurality of plate-like fins 21 are arranged at a predetermined interval on the right side wall 2e and the left side wall 2f So that the main surfaces thereof are parallel to each other. The plate-like fins 21 are preferably made of a material having high thermal conductivity. Examples of such materials include copper, a copper alloy, aluminum, an aluminum alloy, titanium, a titanium alloy, and stainless steel.

The heat exchange tubes 22 extend in the height direction of the cold insulation sheet 1a while meandering and vertically penetrate the main surfaces of the plurality of plate-like fins 21. The heat exchange tube 22 is also preferably formed of a material having a high thermal conductivity, and may be formed of the same material as the plate-like fin 21.

The pipe 23 is connected to both ends of the heat exchange pipe 22 to connect the heat exchange pipe 22 to the first tank T1. In addition, the pump 24 circulates the brine solution in the first tank T1 within the heat exchange tube 22. The piping 23 and the pump 24 may be provided in the storage space S or part or all of them may be buried in the wall of the housing 2.

The blower (25) blows air in the storage space (S) between the plurality of plate-like fins (21). As the blower 25, for example, a small fan, a wing fan such as a hydraulic vent fan, a sirocco fan, a turbo fan, a limit rod fan, or the like can be used.

According to the cold storage tank 1a of the present embodiment, the pin coil apparatus 20 is provided in the housing 2, and the brine solution in the first tank T1 is circulated to the heat exchange pipe 22, It is possible to perform heat exchange with the air in the storage space S through the surfaces of the plate-shaped fins 21 and the heat exchange tubes 22. [ In the fin coil device 20, the distance between the plate-like fins 21 is reduced to increase the number of the plate-like fins 21, thereby easily increasing the area for performing heat exchange with air in the storage space S can do. Therefore, the air in the storage space S can be efficiently cooled by the fin coil device 20, so that even when the cooling holding structure is provided only in the rear wall 2b, The temperature can be sufficiently low.

The air in the storage space S is blown between the plate shaped fins 21 by the blower 25 so that the cooled air near the surfaces of the plate shaped fins 21 and the heat exchange tubes 22 Can be efficiently circulated in the storage space (S). Thereby, the cooling effect in the storage space S can be further enhanced.

In the cold storage tank 1a of the present embodiment, the pin coil device 20 and the like are provided on the right side wall 2e and the left side wall 2f without providing a cooling holding structure. Here, the wall having the cooling / holding structure has a large weight because the brine solution L1 and the liquid L2 are accommodated in the first and second tanks T1 and T2, respectively. On the other hand, the total weight of the pin 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, in comparison with the cold storage container 1 shown in Figs. 2 and 3, the cold storage container 1a of the present embodiment can realize a cooling effect equal to or higher than that of the storage space S, .

Further, the configuration of the pin coil device 20 is not limited to the above-described one, and various known pin coil devices can be used. In the cold storage tank 1a, the rear wall 2b may have the cooling and holding structure shown in Fig.

Next, a more preferable modification of the present embodiment will be described. 9 and 10 show the internal structure of a cold storage container 1a 'according to a modified example of the cold storage container 1a.

The cold storage container 1a 'further includes a plate 26 opposed to the inner surface of the housing 2 as compared with the cold storage container 1a shown in FIGS. 7 and 8. The fin coil device 20 has the above- And is provided between the inner surface of the housing 2 and the plate 26. Specifically, the two plates 26 are provided so as to face the right side wall 2e and the left side wall 2f, respectively, and between the right side wall 2e and one plate 26 and between the left side wall 2f and the right side wall 2e. And a pin coil device 20 is provided between the other plate 26, respectively.

The plate (26) is a flat plate having a rectangular shape in plan view. The material of the plate 26 is not particularly limited and can be selected according to the size of the cold storage container 1a 'and the storage space S. For example, 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 heat transfer effect.

As described above, by covering the pin coil device 20 with the plate 26, the plate 26 becomes a partition, the pin coil device 20 is separated from the storage space S, Is lower than the temperature on the center side of the storage space (S). The temperature difference between the air in the vicinity of the surfaces of the plate-shaped fins 21 and the heat exchange tubes 22 and the brine liquid L1 flowing in the heat exchange tubes 22 Can be reduced. Therefore, the frost hardly adheres to the surface of the plate-shaped fin 21 and the heat exchange tube 22, and the deterioration of the heat exchange efficiency due to the frost can be prevented.

The fact that the air sent between the plurality of plate-like fins 21 from the blower 25 flows toward the center of the storage space S while being cooled by the pin coil device 20 is transmitted to the plate 26 . Therefore, the cooling effect by the fin coil device 20 can be further enhanced. Therefore, it is preferable that the plate 26 is large enough to cover the entire fin coil device 20 and at the same time as close to the pin coil device 20 as possible.

Further, it is preferable that a plurality of slits 27 are formed in the plate 26. Thereby, a part of the air cooled by the fin coil device 20 flows out through the slit 27 to the center side of the storage space S. 9, an air current flows from the slit 27 to the storage space S in addition to the airflow that flows out of the lower end of the plate 26 and flows into the storage space S. Therefore, (S) can be efficiently and more uniformly cooled.

The cold storage containing the above-described fin coil device is suitable for a refrigerated showcase in which outside air enters into the storage space and a cold storage car with a large storage space. Next, an example of applying the cold storage according to the present invention to a cold storage car will be described. Members having substantially the same functions as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will be appropriately omitted.

11 shows a cold storage car 30 including the cold storage tank 1b. Of the walls constituting the external shape of the housing 2 of the cold storage container 1b, only the front wall 2a has a cooling maintaining structure. The cold storage container 1b further includes a fin coil device 20, a pipe 23, a pump 24, a blower 25 and a plate 26. The plate 26 is provided with a slit 27 Respectively.

The pin coil device 20 is mounted on the top wall 2c, and its configuration is almost the same as that shown in Figs. A heat exchange tube (not shown in Fig. 11) of the fin coil device 20 is connected to the first set T1 of the front wall 2a by a pipe 23, The brine solution in the first tank T1 is circulated by the pump 24. The air blower 25 blows air in the storage space S between a plurality of plate-like pins (not shown in Fig. 11) of the pin coil device 20.

The pin coil device 20 is provided between the inner surface of the top wall 2c and the plate 26. [ The 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 rear wall 2b and a part of the air flows from the slit 27 downward And flows into the storage space (S).

As described above, the cold storage container 1b further includes the fin coil device 20, and a cooling holding structure is provided only on the top wall 2c. As a result, the air in the storage space S can be efficiently cooled and the cold storage container 1b can be lightened. Therefore, the cold storage car 30 can carry a heavier object, and the transportation efficiency can be increased.

Further, by covering the fin coil device 20 with the plate 26, it is possible to prevent deterioration of heat exchange efficiency due to frost. The air in the storage space S can be cooled uniformly and efficiently at the same time by letting a part of the air cooled by the fin coil device 20 flow out from the slit 27 downward.

In addition, the rear wall 2b constitutes a door which can be opened and closed. Here, in the cold storage tank 1b, the plate 26 is installed such that one end of the plate 26 extends to the vicinity of the back wall 2b, and the air passing through the fin coil device 20 flows downward near the back wall 2b . Thereby, when the rear wall 2b is opened, the air flowing downwardly makes it difficult for the outside air to intrude into the containing space S, thereby preventing a sudden increase in temperature of the air in the containing space S.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, the external shape of the housing of the cold storage container is a rectangular parallelepiped, but the present invention is not limited to this, and a cube, a tetrahedron, a columnar shape, or the like may be used.

In the above-described embodiment, the liquid L2 in the second tank T2 is frozen to cool the brine solution L1. However, if the freezing temperature of the liquid L2 is lower than the cooling temperature of the object to be stored It is not necessary to freeze the liquid L2. That is, the liquid L2 may be a liquid that is not frozen at 0 占 폚, and the cooling means 6 may be configured to not freeze the liquid L2.

When the liquid L2 is completely frozen, the heat exchange efficiency with the brine solution L1 is lowered. Therefore, for example, when the refrigerated showcase is a refrigerated showcase, the outside air frequently flows into the accommodation space S, so that temperature control in the accommodation space S becomes difficult. Thus, by making the liquid L2 into a liquid that is not frozen even at the temperature of the refrigerant flowing in the cooling means 6 (for example, -20 DEG C), the heat exchange efficiency of the liquid L2 and the brine solution L1 The air in the accommodation space S can be quickly cooled even if the outside air flows into the accommodation space S without deteriorating.

Further, when the liquid L2 is not frozen, the cooling effect after the power supply is stopped to the cold storage is reduced, but the cold showcase is always used in the power supply environment, so no problem occurs.

The cold storage hearth according to the present invention can be applied to a cold storage container, a cold storage container (air cargo, a marine container, a railway container), a large cold storage container, a cold showcase,

1: Insulated high 1 ': Insulated high
1a: Cooling column 1a ': Cooling column
1c: Insulation Height 2: Housing
2a: front wall 2b: back wall
2c: Upper wall 2d: Lower wall
2e: Right side wall 2f: Left side wall
3: outer wall 3a: waterproof wall
3b: Waterproof wall 3c: Waterproof wall
4: inner wall 5:
6: cooling means 7: freezer
7a: refrigerant tube 8: thermometer
9: Caster 10: Handle
11: inlet 12: outlet
13: Inlet port 14: Outlet port
20: pin coil device 21: plate-shaped pin
22: heat exchange tube 23: piping
24: Pump 25: Blower
27: slit 30: cold storage
L1: brine solution L2: liquid
S: Storage space T1: Article 1
T2: Article 2

Claims (13)

A refrigerator comprising at least a housing having a storage space for insulated water inside,
Wherein a part of the wall forming the external shape of the housing,
An outer wall, an inner wall having a thermal conductivity facing the storage space, and a partition wall having thermal conductivity provided between the outer wall and the inner wall,
A first tank for receiving a brine solution which is not frozen at 0 ° C,
A second chamber (tank) for receiving liquid between the outer wall and the partition,
Wherein the second group is provided with a cooling means for cooling the received liquid to below 0 ° C. The cold storage container according to claim 1, wherein the cooling means freezes the liquid. The method of claim 1, wherein the liquid is a liquid that is not frozen at < RTI ID = 0.0 > 0 C,
Wherein the cooling means does not freeze the liquid. The method according to any one of claims 1 to 3, wherein the partition wall is made of a material which is coated with a heat-resisting rubber, a plastic, a foamed resin, a ceramic and a glass, and copper, titanium, stainless steel, Or a multi-layer structure having an air layer formed therein. [5] The apparatus according to any one of claims 1 to 4, wherein the wall forming the outer shape of the housing comprises a front wall, a rear wall, an upper wall, a bottom wall, a right wall and a left wall,
Wherein at least one of the front wall, the rear wall, the top wall, the bottom wall, the right side wall and the left side wall comprises the outer wall, the inner wall, and the partition wall. The cold storage container according to any one of claims 1 to 5, wherein the freezing temperature of the liquid is higher than the freezing temperature of the brine solution. The cold storage container according to any one of claims 1 to 6, wherein the second group has a shape in which at least the portion including the upper end gradually widens in the upward direction. The method according to any one of claims 1 to 7, further comprising a thermometer for measuring the temperature of the brine solution,
Further comprising control means for controlling the cooling of the liquid by the cooling means based on the temperature. The cold storage container according to any one of claims 1 to 8, wherein the material, thickness and heat transfer area of the partition wall are set so that the brine solution is not completely frozen. 10. The apparatus according to any one of claims 1 to 9, further comprising: a pin coil device installed in the housing, the pin coil device having a plurality of plate-like fins and a heat exchange tube passing through the plate-
A pipe connecting the heat exchange pipe to the first tank,
Further comprising a pump for circulating the brine solution in the heat exchange tube. 11. The cold storage refrigerator according to claim 10, further comprising a blowing means for blowing air in the storage space between the plate-shaped pins. 12. The apparatus according to claim 10 or 11, further comprising a plate facing the inner surface of the housing,
Wherein the fin coil device is provided between the inner surface and the plate. The cold storage container according to claim 12, wherein a slit is formed in the plate.

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