JPH0733101Y2 - Cool storage device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerator used for a cooling container or the like.

[0002]

2. Description of the Related Art Conventionally, a cold storage device of this type shown in FIG. 4 has been known.

In this regenerator, a total of four regenerator containers 1 containing a regenerator are arranged at intervals, and a mixture of ammonium chloride and cellulose is used as the regenerator. ing. This cold storage agent stores cold by freezing and maintains a low temperature state until it is melted. Further, in each cold storage container 1, a refrigerant flow passage 2 meandering in the lateral direction (only the foremost cold storage container is shown) is provided in the vertical direction, and both ends of each refrigerant flow passage 2 are connected to the cold storage container 1 respectively. The cool storage container 1 disposed on the outer side and the cool storage container 1 disposed on the upper and lower sides of one side end
Are connected to the upper ends of the refrigerant flow passages 2 via pipes 3, respectively, and the two cold storage containers 1 arranged inside
The lower ends of the refrigerant flow passages 2 are connected to each other via a pipe 3. Further, the two cool storage containers 1 arranged inside are connected to the refrigerant pipes 4 of a refrigerating circuit (not shown) at one end on the lower side of the refrigerant flow passage 2. As a result, the refrigerant flow passage 2 of the one cold storage container 1 arranged outside
When the refrigerant flows in, the refrigerant moves from the lower side to the upper side of the cool storage container 1 while meandering in the lateral direction as shown by the solid line arrow in the figure, and cools the cool storage agent in the cool storage container 1. Then, the refrigerant flowing out from one of the cool storage containers 1 arranged on the outside is sequentially circulated to the other cool storage container 1 and returns to the refrigeration circuit.

[0004]

By the way, some air is enclosed together with the regenerator in each regenerator 1, and this air forms an air layer in the upper part of the regenerator, and the regenerator is frozen. It absorbs the volume expansion that occurs at that time. However, in the above-described cool storage device, since the upper ends and the lower ends of the respective refrigerant flow passages 2 are connected, the refrigerant flowing through the respective refrigerant flow passages 2 is the first and the third refrigerant. In the cold storage container 1, it moves from the bottom to the top,
The second and fourth cold storage containers 1 move from the upper side to the lower side. Therefore, when the cold storage agent freezes from the lower side first like the first and third cold storage containers 1, the volume expansion is absorbed in the upper air layer, but like the second and fourth cold storage containers 1, When the cool storage agent freezes from the upper side, the volume expansion cannot be absorbed because there is no air layer in the lower portion of the cool storage container 1, and the pressure due to the volume expansion of the cool storage agent acts on the lower end portion of the cool storage container 1. However, there is a problem that the cold storage container 1 is likely to be cracked.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a cool storage device capable of reliably absorbing the volume expansion of the cool storage agent in all the cool storage containers. is there.

[0006]

In order to achieve the above-mentioned object, the regenerator of the present invention has a plurality of regenerator vessels each having a refrigerant flow passage meandering in the lateral direction provided in the up-and-down direction and arranged at intervals. In each regenerator, a regenerator that accommodates a regenerator that causes a volume change by freezing and thawing, and an air layer that absorbs the volume expansion of the regenerator is provided in the upper part of each regenerator in the regenerator. The refrigerant inlet of the passage is provided at the lower end side of each refrigerant passage, the refrigerant outlet of each refrigerant passage is provided at the upper end side of each refrigerant passage, and the refrigerant flow of the cold storage container located at one end of the cold storage container row is provided. A refrigerant storage means located at one end side of the cold storage container row among the adjacent cold storage containers by connecting a refrigerant inflow means from the outside to the inlet and a refrigerant outflow means to the outside to the refrigerant outlet of the cold storage container located at the other end, respectively. Refrigerant outlet and other A coolant inlet of the cold storage container positioned on the side are connected, respectively.

[0007]

According to the regenerator of the present invention, the refrigerant flowing into the refrigerant inflow port of the regenerator container located at one end of the regenerator container, that is, the lower end side of the refrigerant flow passage of the regenerator container is moved upward from below the regenerator container. Move to. Further, the refrigerant outlet of the cold storage container, that is, the refrigerant flowing into the upper end side of the refrigerant flow passage of the cold storage container is the refrigerant inlet port of the cold storage container located at the other end side of the cold storage container row, that is, the refrigerant flow of the cold storage container. It flows into the lower end side of the passage and moves from the lower side to the upper side like the cold storage container. Therefore, in all the cold storage containers, the refrigerant moves from the lower side to the upper side, and all the cold storage agents freeze from the lower side to the upper side.

[0008]

1 to 3 show an embodiment of the present invention.

In the figure, reference numeral 10 designates a total of four cold storage containers arranged at intervals from each other and made of plastic such as vinyl chloride and formed in a hollow rectangular parallelepiped shape.
Inside the cold storage container 10, a small amount of air is enclosed together with a cold storage agent 11 made of the same material as the conventional example, and an air layer 12 is formed above the cold storage container 10 by this air.

Reference numeral 13 denotes a heat exchanger attached to each cold storage container 10, which is formed by adhering rectangular heat transfer plates 14 and 15 made of a heat transfer metal such as aluminum to each other. Is in contact with one side surface of the cold storage container 10. A groove 15a bent in a meandering shape is formed in the other heat transfer plate 15, and the side surface of this groove 15a is closed by one heat transfer plate 14 as shown in FIG. The refrigerant flow passage 16 is formed. Further, below the one end of the heat exchanger 13, the refrigerant inlet 16a of the refrigerant passage 16 is provided.
The refrigerant outlets 16b of the refrigerant flow passage 16 are provided on the upper side thereof.

Bolt insertion holes 10a, 13a corresponding to each other are formed in each cold storage container 10 and the heat exchanger 13, and each bolt insertion hole 10a, 13a is provided in each of the cold storage container 10 and the heat exchanger 13 at a total of four positions. Has been. That is, the back surface of the cold storage container 10 and one heat transfer plate 14 side of the heat exchanger 13 are in surface contact with each other, and each bolt insertion hole 10
A total of four bolts 17 are inserted into the a and 13a from the heat exchanger 13 side. Also, on the front side of the cold storage container 10,
A hexagonal nut 19 is screwed onto each bolt 17 via a total of two fixing plates 18 arranged above and below, so that the regenerator 10 and the heat exchanger 13 are securely fastened as shown in FIG. Each fixing plate 18 is a member having a U-shaped cross section that extends in the lateral direction,
Bolt insertion holes 18a are provided near both ends thereof.

One of the cold storage containers 10 arranged on the outer side (the front side in the drawing) has a refrigerant outlet port 16b of the refrigerant flow passage 16 connected to an outlet side refrigerant pipe 20 of the refrigeration circuit, and the refrigerant flow passage 16
Refrigerant outflow port 16a of the adjacent cold storage container 10
6b is connected via a pipe 21. The other cold storage container 10 arranged on the outside has a refrigerant inlet 16a of the refrigerant passage 16 connected to an inflow side refrigerant pipe 22 of the refrigeration circuit,
The refrigerant outlet 16b of the refrigerant flow passage 16 is connected to the adjacent cold storage container 10
Is connected to the refrigerant inflow port 16a through the pipe 23. Further, one of the cold storage containers 10 (on the front side in the drawing) arranged inside is connected to the refrigerant outlet 16a of the refrigerant flow passage 16 via the pipe 24 to the refrigerant outlet 16b of the other cold storage container 10 arranged inside. It is connected.

In the regenerator thus constructed, the refrigerant flowing from the inflow side refrigerant pipe 10 flows as shown by the solid line arrow in the figure. That is, the refrigerant flowing into the refrigerant flow passage 16 of the first cold storage container 10 moves from the lower side to the upper side of the cold storage container 10, whereby the cold storage agent 11 freezes from the lower side first. In addition, the refrigerant flow passage 16 of the first cold storage container 10
The refrigerant flowing out of the second cold storage container 10 flows into the refrigerant inlet 16a of the second cold storage container 10, that is, the lower end side of the refrigerant flow passage 16 of the second cold storage container 10, and goes from the lower side to the upper side like the first cold storage container 10. Moving. Therefore, also in the third and fourth cold storage containers 10, the refrigerant moves from the lower side to the upper side, and the cold storage agents 11 in all the cold storage containers 10 are frozen from the lower side first.

As described above, according to the cold storage apparatus of the present embodiment, the refrigerant inlet 16a of the refrigerant flow passage 16 is connected to each cold storage container 1.
The refrigerant outlet 16b of the refrigerant flow passage 16 is provided in the lower part of 0 in the upper part of each cold storage container 10 so that all the refrigerant flowing through each refrigerant flow passage 16 moves from the lower side to the upper side of the cold storage container 10. Therefore, all the cold storage agents 11 are frozen from the lower side first, and the volume expansion thereof is absorbed by the upper air layer 12 in the cold storage container 10. Therefore, unlike the conventional case, no pressure is generated at the lower end of the cold storage container 10 due to the volume expansion of the cold storage agent 11, and cracks and the like of the cold storage container 10 can be reliably prevented.

[0015]

As described above, according to the cold storage apparatus of the present invention, since the volume expansion of the cold storage agent can be absorbed in all the cold storage containers, cracks and the like of the cold storage containers can be reliably prevented. it can.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a cool storage device showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a cold storage device according to an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of a cold storage device according to an embodiment of the present invention.

FIG. 4 is an overall perspective view of a conventional cool storage device.

[Explanation of symbols]

10 ... Regenerator, 11 ... Regenerator, 12 ... Air layer, 13 ...
Heat exchanger, 16 ... Refrigerant flow passage, 16a ... Refrigerant inflow port, 1
6b ... Refrigerant outlet.

Claims (1)

[Scope of utility model registration request] 1. A plurality of cool storage containers each having a vertically meandering coolant flow passage arranged in a horizontal direction are arranged at intervals, and each cool storage container contains a cool storage agent that causes a volume change due to freezing and thawing. With the above, in the cool storage device provided with an air layer that absorbs the volume expansion of the cool storage agent in the upper part of each cool storage container, the coolant inlet of each coolant flow passage is located at the lower end side of each coolant flow passage, and each coolant flow. The refrigerant outlet of the passage is provided on the upper end side of each refrigerant passage, and the refrigerant inlet means from the outside to the refrigerant inlet of the cold storage container located at one end of the cold storage container row, of the cold storage container located at the other end. The refrigerant outflow means is connected to the refrigerant outlet, and the refrigerant outlet of the cold storage container located on one end side of the cold storage container row and the refrigerant inlet of the cold storage container located on the other end side of the adjacent cold storage containers are connected. Connected to each Regenerator characterized by.