JP2024102617A - Cooling Storage - Google Patents

Abstract

To suppress a situation where defrosting water and ice that have dropped from a cooler cannot be received by a drain pan.SOLUTION: A cooling storage 10 includes: a storage chamber 12; a cooler 35 to which air sucked from the storage chamber 12 is caused to flow in and that cools air passing through inside; a defrosting heater 70 that melts frost formed in the cooler 35; and a drain pan 60 provided below the cooler 35 and receiving defrosting water from the cooler 35. The drain pan 60 includes a plurality of projecting wall parts 63 projecting from a bottom part 61B of the drain pan toward the cooler 35 and juxtaposed in a first arrangement direction.SELECTED DRAWING: Figure 4

Description

This technology relates to refrigerated storage.

A conventional cooling storage facility is known, for example, from the one described in Patent Document 1. The cooling storage facility (agricultural product cooling facility) described in Patent Document 1 includes a storage facility main body (cooling facility main body) and a cooling device (refrigeration unit) installed on the ceiling surface of the storage facility main body. An insulating wall (lower insulating part) is provided below the cooler that constitutes the cooling device, and the insulating wall is provided with an intake and exhaust port for drawing in and exhausting the cold air from the cooler into the storage facility main body. In addition, a drain pan (dew receiving tray) is provided directly below the cooler on the insulating wall to receive defrosted water and ice chips that are generated when frost on the cooler melts.

JP 2014-95493 A

In the cooling storage unit described in Patent Document 1, if the drain pan is unable to receive the defrosted water or ice that falls from the cooler, there is a concern that it may pass through the intake and exhaust ports and fall into the storage unit itself.

This technology was developed based on the above-mentioned situation, and aims to prevent situations where defrosted water or ice that falls from the cooler is not caught by the drain pan.

To solve the above problem, the cooling storage facility according to the present technology includes a storage chamber, a cooler into which air is drawn from the storage chamber and which cools the air passing through the interior, a defrosting heater that melts frost on the cooler, and a drain pan that is provided below the cooler and receives defrosted water from the cooler. The drain pan has a plurality of protruding walls that protrude from its bottom toward the cooler and are aligned in a first arrangement direction.

When the frost is melted by the defrost heater, the defrost water and ice pieces are received by a drain pan provided below the cooler. The drain pan is provided with a plurality of protruding wall portions arranged in the first arrangement direction, and grooves are formed between the protruding wall portions. The defrost water and ice that fall into the drain pan hit the plurality of protruding wall portions protruding toward the cooler, and the defrost water and ice that is smaller than the groove (between the protruding wall portions) enter the groove. On the other hand, ice that is larger than the groove remains on the protruding wall portions. In other words, the defrost water and ice that fall into the drain pan are separated by the protruding wall portions and the grooves between the protruding wall portions. As a result, even if the defrost water and ice in the drain pan refreeze, they are less likely to grow into large ice (ice chunks), and the amount of ice remaining in the drain pan can be suppressed. As a result, the ice remaining in the drain pan can suppress the situation in which the defrost water and ice pieces generated during the next defrost operation overflow from the drain pan and cannot be received by the drain pan.

The cooler may have a plurality of fins arranged in a first arrangement direction at a first arrangement interval, and the plurality of protruding wall portions may be arranged in a first arrangement direction at a second arrangement interval, and the second arrangement interval may be smaller than the first arrangement interval. When the arrangement direction of the protruding wall portions of the drain pan is the same first arrangement direction as the arrangement direction of the fins of the cooler, the second arrangement interval, which is the width of the groove (between the protruding wall portions), may be made smaller than the first arrangement interval of the fins, so that ice that falls between the fins does not enter the groove and is more likely to remain on the protruding wall portions. The ice that remains on the protruding wall portions is close to the cooler and is easily melted by receiving heat from the cooler heated by the defrost heater. As a result, it is easier to suppress ice remaining in the drain pan.

The cooler may have a plurality of fins arranged in a first arrangement direction at a first arrangement interval, and the plurality of protruding wall portions may be arranged in a second arrangement direction intersecting with the first arrangement direction. By setting the arrangement direction of the protruding wall portions of the drain pan to the second arrangement direction intersecting with the arrangement direction of the fins of the cooler, ice that falls between the fins does not enter the grooves and tends to remain on the protruding wall portions. Ice remaining on the protruding wall portions is close to the cooler and is easily melted by heat from the cooler heated by the defrost heater. As a result, it is easier to suppress ice remaining in the drain pan.

The drain pan may have a drain outlet for the defrost water, and the bottom of the drain pan may include a non-installed portion where the multiple protruding wall portions are not provided, and the non-installed portion of the bottom may be connected to the drain outlet. In this way, even if protruding wall portions are provided, the defrost water can efficiently flow through the non-installed portion to the drain outlet.

The plurality of protruding walls may be removably attached to the bottom. In this way, even if protruding walls are provided, cleaning of the drain pan can be made easy.

In order to solve the above problems, the cooling storage facility according to the present technology includes a storage chamber, a cooler that receives air drawn from the storage chamber and cools the air passing through the interior, a defrosting heater that melts frost on the cooler, and a drain pan that is provided below the cooler and receives defrosted water from the cooler, and the drain pan may have a protruding portion that is provided along the side of the air inlet side of the cooler and slopes upward away from the cooler. In this way, ice that falls from the air inlet side of the cooler, where frost is likely to form, can be received by the protruding portion and guided along the slope into the drain pan, thereby preventing the drain pan from being unable to receive it.

The cooler may have a plurality of fins arranged in a first arrangement direction, and the length of the protruding portion in the first arrangement direction may be equal to or greater than the length of all of the fins in the first arrangement direction. In this way, the protruding portion can reliably catch ice that falls from the air inlet side of the cooler and guide it into the drain pan.

The upper end of the protruding portion may be displaced toward the cooler by receiving the wind pressure of the air flowing into the cooler. In this way, when the amount of air flowing into the cooler increases during cooling operation, the protruding portion moves toward the cooler by the wind pressure. As a result, it is possible to prevent the protruding portion from disrupting the flow of air flowing into the cooler during cooling operation.

The protruding portion may be flexible and have a tapered upper end. In this way, the protruding portion can be easily displaced toward the cooler by the wind pressure of the air flowing into the cooler.

This technology can prevent the defrosted water or ice that falls from the cooler from being unable to be collected by the drain pan.

FIG. 1 is a perspective view of a cooling storage unit according to a first embodiment; 2 is a perspective cross-sectional view taken along line II in FIG. FIG. 3 is an enlarged perspective sectional view of the cooler and its surroundings in FIG. 2 . A perspective view of a cooler, a drain pan, and peripheral members thereof. Perspective view of the drain pan FIG. 13 is a perspective view of a drain pan according to a second embodiment; Exploded perspective view of the drain pan FIG. 13 is a perspective view showing a drain pan according to a third embodiment; Cross-sectional view of the cooler area FIG. 10 is a cross-sectional view showing a state in which the overhanging portion of the drain pan shown in FIG. 9 is displaced. FIG. 11 is a plan view of a drain pan according to another embodiment; FIG. 11 is a plan view of a drain pan according to another embodiment;

<Embodiment 1>
A cooling storage facility 10 according to a first embodiment will be described with reference to Fig. 1 to Fig. 5. As shown in Fig. 1 to Fig. 3, the cooling storage facility 10 mainly includes a storage facility main body 11, a door 14 for opening and closing a front opening of the storage facility main body 11, a machine room 15 disposed above the storage facility main body 11, and a cooling device 30. The doors 14 are provided in two pairs, one above the other, in a double door style, but the number of doors and the opening and closing method are not limited.

2, the storage body 11 has a structure in which an outer box 11A and an inner box 11B, which are assembled into a box shape using metal plates such as stainless steel, are filled with a foamed resin material-made insulating material 11C. The inside of the storage body 11 (hereinafter sometimes simply referred to as the inside of the storage body) is a storage chamber 12, and the storage chamber 12 is provided with a shelf support member 12A that supports a mesh shelf on which stored items (food, etc.) are placed. The storage body 11 is composed of insulating walls including a ceiling wall portion 41, a bottom wall portion 42, a left side wall portion 43, a right side wall portion 44, and a rear wall portion 45. The ceiling wall portion 41 is formed with a first suction port 41A and a first blowing port 41B penetrating the ceiling wall portion 41 at a position close to the rear wall portion 45. The first suction port 41A and the first blowing port 41B are arranged side by side at a predetermined interval in the front-rear direction, and the first blowing port 41B is located rearward of the suction port 41A. The first intake port 41A and the first exhaust port 41B are rectangular and extend in the left-right direction when viewed in a plan view, and are approximately the same size.

In the machine room 15, a cooler box 80 is disposed above the first suction port 41A and the first blowing port 41B of the ceiling wall 41. The cooler box 80 is a rectangular parallelepiped insulated box elongated in the left-right direction, and is placed on the ceiling wall 41 so as to cover the first suction port 41A and the first blowing port 41B from above. The internal space of the cooler box 80 is the cooler chamber 20, which contains the cooler 35, the circulation fan 24, and the drain pan 60. The bottom 82 of the cooler box 80 is provided with a second suction port 82A at a position overlapping the first suction port 41A in a plan view, and a second blowing port 82B at a position overlapping the first blowing port 41B in a plan view. The first suction port 41A and the second suction port 82A constitute the suction port 20A for drawing air from the storage chamber 12 into the cooler chamber 20. The first air outlet 41B and the second air outlet 82B constitute an air outlet 20B for blowing air from the cooler chamber 20 into the storage chamber 12.

As shown in FIG. 1, the machine room 15 is located directly above the ceiling wall portion 41 of the storage body 11. The machine room 15 is covered by panels on the front, left, and right sides, while the top and rear are almost entirely open, although the top and rear may also be covered by panels. In the machine room 15, a cooler box 80 is disposed at the rear, and the compressor 31, condenser 33, and condenser fan 37 of the cooling device 30 are housed at the front.

The cooling device 30 is a device for cooling the inside (storage chamber 12) of the storage body 11. The cooling device 30 includes a compressor 31, a condenser 33, an expansion valve (capillary tube), a cooler (evaporator) 35, a condenser fan 37, and an accumulator 39. The compressor 31, the condenser 33, and the cooler 35 are connected by a refrigerant pipe 38 to form a known refrigeration cycle (refrigeration circuit).

The cooler 35 and the drain pan 60 are arranged between the intake port 20A and the exhaust port 20B in the cooler chamber 20, as shown in Fig. 2 and Fig. 3. Behind the cooler 35, two circulation fans 24 are arranged side by side in the left-right direction, as shown in Fig. 4. The circulation fans 24 are attached to a bracket 26 (one example of a mounting member) arranged behind the cooler 35 (on the air outlet side). The bracket 26 is an inclined flat member and has an opening to which the circulation fan 24 is attached. When the circulation fan 24 is operated, the air in the storage chamber 12 is sucked into the cooler chamber 20 from the intake port 20A and cooled by passing through the cooler 35. The cooled air is blown out from the exhaust port 20B into the storage chamber 12 and circulated.

The cooler 35 cools the air that is sucked in from the storage chamber 12 and passes through the inside by heat exchange. The cooler 35 is a rectangular parallelepiped shape that is long in the left-right direction, and includes a number of fins 35A, end plates 35B, and an evaporation tube 35C. Each fin 35A is a metal plate that is a rectangular plate that is long in the up-down direction, and is arranged at a predetermined first arrangement interval L1 in the first arrangement direction (left-right direction in this embodiment). The first arrangement interval L1 is the interval (gap width) between adjacent fins 35. In this embodiment, the cooler 35 has a front surface (surface on the air inflow side) formed by the front end portions 35A2 of the many fins 35A aligned vertically, and the air that flows into the cooler 35 passes through the gaps formed between the fins 35A horizontally from front to back.

The end plates 35B are metal plates provided on both sides of the multiple fins 35A in the first arrangement direction (left and right direction). The end plates 35B are thicker than the fins 35A and are formed to be strong. The evaporation tubes 35C are folded back while penetrating each fin 35A. The evaporation tubes 35C are connected to the refrigerant tubes 38 of the refrigeration circuit, and the refrigerant passes through them. When the liquid refrigerant flowing into the evaporation tubes 35C evaporates and vaporizes into refrigerant gas, the air passing through the cooler 35 is cooled by taking heat from the air near the evaporation tubes 35C. An accumulator 39 is provided at the outlet side of the evaporation tubes 35C in the refrigerant flow direction to prevent liquid refrigerant that has not been vaporized in the cooler 35 from flowing into the compressor 31.

The defrost heater 70 is provided at the bottom of the air inlet side (lower front side) of the cooler 35. The defrost heater 70 is attached to the end plate 35B of the cooler 35. The defrost heater 70 is elongated and U-shaped so as to heat the entire lower front side of the cooler 35, but the shape is not limited. The defrost heater 70 contacts the front end 35A2 of the fin 35A of the cooler 35, but it does not have to be in contact as long as it is close enough to produce a heating effect.

As shown in FIG. 3, the drain pan 60 is disposed directly above the portion of the bottom 82 of the cooler box 80 between the second suction port 82A and the second outlet port 82B. As shown in FIG. 4 and FIG. 5, the drain pan 60 has a main body 61 and a drainage portion 66, and is integrally formed, for example, from a resin material. The main body 61 is disposed directly below the cooler 35 and receives defrost water generated when frost on the cooler 35 melts. The main body 61 is a shallow tray-like shape extending in the left-right direction, and its planar size is larger than the bottom surface of the cooler 35. A drainage port 61A is formed in the front side portion 61C of the main body 61, and the bottom 61B of the main body 61 is inclined so that water flows down toward the drainage port 61A. The drainage portion 66 is a flow path through which the defrost water received by the main body 61 is drained. The drainage section 66 is a hollow cylinder extending forward from the drain outlet 61A, and a drain hose 68 is connected to the drainage section 66 from the front. The defrost water received by the main body 61 of the drain pan 60 passes through the drainage section 66 and the drain hose 68 and is stored in the evaporation dish 69, where it is evaporated. The evaporation dish 69 is provided outside the cooler box 80 in the machine room 15.

As shown in Figs. 3 to 5, the main body 61 of the drain pan 60 has a number of protruding wall portions 63 that protrude from the bottom 61B toward the upper side where the cooler 35 is arranged. The many protruding wall portions 63 are arranged at a predetermined second arrangement interval L2 along the same first arrangement direction as the fins 35A of the cooler 35. The protruding wall portions 63 are elongated flat plates, and a groove 64 is formed between adjacent protruding wall portions 63. The second arrangement interval L2 is the same as the width of the groove 64 (the interval between the protruding wall portions 63). The protruding wall portions 63 are formed so that their protruding end portions 63A are close to the lower end portions 35A1 of the fins 35A, and the protruding length is formed to be approximately the same as the depth of the main body 61. The protruding wall portions 63 according to this embodiment extend elongatedly along the front-rear direction between the front side portion 61C and the rear side portion 61D of the drain pan 60.

Next, the effects of the cooling storage 10 configured as described above will be described. In the cooling storage 10, the defrost heater 70 is operated at predetermined cooling operation times, etc., and a defrosting operation is performed to melt the frost on the cooler 35. When the frost melts by the defrosting operation, the defrosted water and ice are received by the drain pan 60 provided directly below the cooler 35. At this time, the frost adhering between the fins 35A of the cooler 35 becomes defrosted water and ice pieces (thin ice) and falls, hitting the multiple protruding wall portions 63 of the drain pan 60. The defrosted water and ice pieces that are smaller than the width of the groove 64 (second arrangement interval L2) fall into the groove 64. On the other hand, ice larger than the groove 64 remains on the protruding wall portion 63. That is, the defrosted water and ice pieces received by the drain pan 60 are separated by the protruding wall portion 63. As a result, even if the defrosted water or ice chips in the drain pan 60 refreeze, they are less likely to grow into large pieces of ice (including ice blocks).

Also, ice larger than the groove 64 remains on the protruding wall portion 63, so the distance from the lower end portion 35A1 of the cooler 35 becomes smaller than when the protruding wall portion 63 is not provided (when the ice remains on the bottom portion 61B of the main body portion 61). The cooler 35 is heated by the defrost heater 70, and ice remaining on the protruding wall portion 63 is easily melted by the heat from the cooler 35. As a result, it becomes easier to suppress ice remaining in the drain pan 60.

Furthermore, it is preferable that the second arrangement interval L2 (width of the groove 64) of the protruding wall portion 63 of the drain pan 60 is smaller than the first arrangement interval L1 of the fins 35A of the cooler 35. This makes it easier for ice pieces that fall between the fins 35A to remain on the protruding wall portion 63 without entering the groove 64. As a result, the proportion of ice pieces that melt when exposed to heat from the cooler 35 can be increased, and ice remaining in the drain pan 60 can be further suppressed.

<Embodiment 2>
A drain pan 160 according to the second embodiment will be described with reference to Fig. 6 and Fig. 7. In the second embodiment, a main body 161 of the drain pan 160 is different from that in the first embodiment. In the second embodiment, the same configuration and operation and effects as those in the first embodiment will not be described again.

As shown in FIG. 6, the protruding wall portions 163 of the main body portion 161 of the drain pan 160 are aligned in a second arrangement direction (front-rear direction) that intersects with the first arrangement direction (left-right direction) of the fins 35A. This makes it easier for ice pieces that fall between the fins 35A to remain on the protruding wall portions 163 without falling into the grooves 164 (between the protruding wall portions 163). For example, even if the second arrangement interval L2 of the protruding wall portions 163 is greater than the first arrangement interval L1 of the fins 35A, ice pieces are less likely to get into the grooves 164 (between the protruding wall portions 163).

Unlike the first embodiment, the protruding wall portion 163 is not provided over the entire bottom 161B of the main body 161. The bottom 161B has a non-arranged portion 161B1 where the protruding wall portion 163 is not provided. The non-arranged portion 161B1 according to this embodiment is formed on an extension of the drainage portion 66, and the protruding wall portion 163 is formed symmetrically on both sides of the non-arranged portion 161B1. The non-arranged portion 161B1 extends in an elongated manner in the front-rear direction at approximately the center position in the left-right direction of the bottom 161B. The non-arranged portion 161B1 is connected to the drainage port 61A, and the defrost water that flows down the groove 164 (between the protruding wall portions 163) flows out to the drainage port 61A through the non-arranged portion 161B1. As a result, even when the protruding wall portion 163 is provided, the defrost water can be easily drained.

The protruding wall portion 163 may be detachably attached to the bottom portion 161B as shown in FIG. 7. This makes it easy to clean the drain pan 160 even when the protruding wall portion 163 is provided.

<Embodiment 3>
A drain pan 260 according to the third embodiment will be described with reference to Fig. 8 to Fig. 10. The third embodiment differs from the first embodiment in that the drain pan 260 has a protruding portion 67. In the third embodiment, the same configuration and effects as those of the first and second embodiments will not be described again.

As shown in Figures 8 and 9, the drain pan 260 has a thin plate-like protruding portion 67 provided along the front side portion 61C of the main body portion 61. The protruding portion 67 extends in an elongated manner in the left-right direction (first arrangement direction) so as to cover the lower portions of the front ends 35A2 of the multiple fins 35A from the front. When the circulation fan 24 is stopped and no wind pressure is applied, the protruding portion 67 protrudes in an upward direction at an angle away from the cooler 35.

Generally, frost on the cooler 35 is likely to occur on the air inlet side (front side) where it comes into contact with warm, moist air. The overhanging portion 67 can catch ice that breaks off and falls from the front side of the cooler 35 during defrosting operation. The overhanging portion 67 is also inclined, and can guide the caught ice to slide down into the main body portion 61 along the inclination. This can prevent the ice from being unable to be caught by the drain pan 60 and falling from the suction port 20A into the storage chamber 12. It is preferable that the left-right length L3 of the overhanging portion 67 is equal to or greater than the left-right length L4 of all the fins 35A. This makes it easier to catch ice that falls from all the fins 35A.

The upper end 67A of the overhanging portion 67 is formed so as to be displaced toward the cooler 35 under the wind pressure of the air flowing into the cooler. More specifically, the overhanging portion 67 is flexible and has a tapered shape (so-called fin shape) at the upper end. The overhanging portion 67 may be made of, for example, a soft resin material (such as silicone) and may be integrally formed with the drain pan 260. In this way, as shown in FIG. 10, when the circulation fan 24 operates during cooling operation and the amount of air flowing into the cooler 35 increases, the upper end 67A of the overhanging portion 67 moves toward the cooler 35 under the wind pressure. As a result, even if the overhanging portion 67 is provided, it is possible to suppress a situation in which the flow of air flowing into the cooler 35 during cooling operation is disturbed.

In this embodiment, the protruding wall portion 63 of the drain pan 260 is not essential. The overhanging portion 67 may also be provided on the rear side portion 61D of the main body portion 61. In this embodiment, a bracket 26 is provided on the rear of the cooler 35, and the lower end of the bracket 26 is inserted into the main body portion 61 of the drain pan 60. As a result, ice that falls off the rear side of the cooler 35 is received by the bracket 26 and slides down into the main body portion 61 along the inclination of the bracket 26. As a result, in this embodiment, there is no great need to provide the overhanging portion 67 on the rear side of the cooler 35, but it may be provided depending on the configuration.

<Other embodiments>
The present technology is not limited to the embodiments described above and illustrated in the drawings, and for example, the following embodiments are also included in the technical scope of the present technology.

(1) The shapes, arrangement intervals, arrangement directions, etc. of the protruding wall portions 63, 163 shown in the figures are merely examples, and may be other than these. In addition, the protruding wall portions 63, 163 may be composed of multiple protruding wall portions arranged in different arrangement directions. For example, as in the drain pan 360 shown in FIG. 11, the protruding wall portion 263 may be composed of a first protruding wall portion 264 arranged in the left-right direction and a second protruding wall portion 265 arranged in the front-rear direction. In addition, as in the drain pan 460 shown in FIG. 12, the protruding wall portion 363 may be composed of a first protruding wall portion 364 and a second protruding wall portion 365 arranged in different arrangement directions, inclined so as to guide the defrost water toward the drain outlet 61A.

(2) The shape, size, etc. of the non-installed portion 161B1 of the protruding wall portion 163 shown in the figure are merely examples, and for example, as shown in FIG. 11, the non-installed portion 261B1 may be approximately V-shaped.

(3) The configurations according to each embodiment can be appropriately combined and used together.

(4) This technology can also be applied to cooling storage units other than the cooling storage unit 10 (e.g., locker-type refrigerators), and even to equipment equipped with a cooler other than a cooling storage unit (e.g., ice makers).

10: Cooling storage, 12: Storage room, 35: Cooler, 35A1: Lower end (lower surface), 35A2: Front end (front surface, surface on the air inlet side), 60, 160, 260, 360, 460: Drain pan, 61A: Discharge port, 61B, 161B: Bottom, 61C: Side on the air inlet side, 63, 163, 263, 363: Protruding wall, 67: Overhang, 67A: Upper end, 70: Defrost heater, 161B1, 261B1: Non-installed portion, L1: First arrangement interval, L2: Second arrangement interval

Claims (9)

A storage room;
a cooler into which air drawn from the storage chamber flows and cools the air passing therethrough;
a defrosting heater for melting frost formed on the cooling device;
A drain pan is provided below the cooler and receives defrosted water from the cooler.
The drain pan is a cooling storage container having a plurality of protruding wall portions protruding from a bottom thereof toward the cooler and arranged side by side in a first arrangement direction. The cooler has a plurality of fins arranged side by side at a first arrangement interval in a first arrangement direction,
The plurality of protruding wall portions are arranged side by side at second arrangement intervals in the first arrangement direction,
The cooling storage facility according to claim 1 , wherein the second arrangement interval is smaller than the first arrangement interval. The cooler has a plurality of fins arranged side by side at a first arrangement interval in a first arrangement direction,
The cooling storage facility according to claim 1 , wherein the plurality of protruding wall portions are arranged side by side in a second arrangement direction that intersects with the first arrangement direction. The drain pan has a drain port for the defrost water,
the bottom portion of the drain pan includes a non-installed portion where the plurality of protruding wall portions are not provided,
The cooling storage facility according to claim 1 , wherein the non-installed portion of the bottom is in communication with the drain outlet. The cooling storage unit according to any one of claims 1 to 3, wherein the plurality of protruding walls are removably attached to the bottom. A storage room;
a cooler into which air drawn from the storage chamber flows and cools the air passing therethrough;
a defrosting heater for melting frost formed on the cooling device;
A drain pan is provided below the cooler and receives defrosted water from the cooler.
The drain pan is a cooling storage cabinet having a protruding portion that is provided along the side of the air inlet side of the cooler and slopes upward in a direction away from the cooler. The cooler has a plurality of fins arranged side by side in a first arrangement direction,
The cooling storage facility according to claim 6 , wherein a length of the protruding portion in the first arrangement direction is equal to or greater than a length of all of the fins in the first arrangement direction. The cooling storage facility according to claim 6 or 7, wherein the upper end of the protruding portion is displaceable toward the cooler by receiving wind pressure from air flowing into the cooler. The cooling storage facility according to claim 8, wherein the protruding portion is flexible and has a tapered upper end.

Images