JP2001296081A - Cold storage apparatus for cold insulation chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold storage apparatus of a cold insulation chamber capable of the reduction of the cost required for a charger and of making the weight of the cold insulation chamber light weight. SOLUTION: A charger 25 provided on the side of the cold storage apparatus 20 is connected with a battery 13a of the cold insulation chamber 10 through a charging cable 26, whereby the battery 13a of the cold insulation chamber 10 is charged with electricity. Accordingly, even if a plurality of the cold insulation chambers 10 are provided, the battery 13a of each cold insulation chamber 10 can be charged with electricity by making use of the one charger 25. Thus, there is no need of mounting the charger on the side of the cold insulation chamber 10, and the cost of the cold insulation chamber 10 can be correspondingly reduced together with assurance of making the weight of the cold insulation chamber 10 light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool storage device of a refrigerator for storing and transporting articles requiring freezing or refrigeration.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. 10-132440.
As described in the publication, a cool box provided with a cool storage type cooler that cools the inside of the cool box, and a cooling device that cools the cooler of the cool box via a heat medium such as brine are separated from each other. There is known a cold storage device in which a cooler of a cold storage and a cooling device are connected by a detachable heat medium flow pipe. In this cool storage device, when the cooler of the cool storage is cooled, the heat medium cooled by the refrigeration circuit of the cooler is circulated to the cool storage side by connecting the cool storage and the cooling device, so that the cool storage agent of the cooler is cooled. When the refrigerator is used for transporting articles, the refrigerator and the cooling device are separated from each other. The cool box has a battery for driving a blower for circulating air in the box, and a charger for charging the battery. The battery is charged by the charger by an external power supply connected to the cool box.

[0003]

By the way, the charging of the battery is mainly performed at the collecting place of the cool box simultaneously with the cold storage of the plurality of coolers, but the charger is not used during the transportation of the goods. However, since each of the refrigerators is individually mounted, the cost of the refrigerator is increased by the amount of the charger, and the weight of the refrigerator increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a cool storage device for a cool box which can reduce the cost required for a charger and reduce the weight of the cool box. Is to do.

[0005]

According to the present invention, in order to achieve the above object, according to the present invention, there is provided a cold storage main body capable of storing an arbitrary article therein, and a cooler for cooling the inside of the refrigerator with a cold storage agent. A heat medium circulating means for exchanging heat of the liquid heat medium with the regenerator of the cooler, and a storage battery for driving a predetermined device, by circulating the heat medium cooled outside in advance to the heat medium circulating means. In a cool storage device of a cool box configured to perform cold storage of a cooler, a heat medium circulation that is detachably connected to a heat medium circulating means of at least one cool box and is capable of flowing a heat medium to a heat medium circulating means of the cool box. Circuit, a pump for circulating the heat medium in the heat medium circulation circuit, cooling means for cooling the heat medium in the heat medium circulation circuit, and detachably connected to the storage battery of at least one cold storage via a predetermined electricity supply means. , Cool storage battery And a charger for charging via the conducting means. By connecting the charger to the storage battery in the cool box via the power supply means, the storage battery in the cool box is charged. Therefore, there is no need to mount a charger on the cool box side, and a plurality of cool boxes are provided. Even in this case, the storage battery of each cool box is charged by one charger.

According to a second aspect of the present invention, in the cold storage device of the cold storage according to the first aspect, electric power on the power supply means side is supplied to the cold storage side by an induction coil provided at a connection portion between the power supply means side and the cold storage side. It is configured to supply to. Accordingly, in addition to the function of the first aspect, the electric power on the power supply means side is supplied to the cool box without contacting the electrical contacts.

According to a third aspect of the present invention, in the cool storage device of the cold storage according to the second aspect, the connection portion on the side of the power supply means is formed so as to be freely inserted into and removed from the connection portion on the cold storage side. Thus, in addition to the function of the second aspect, the connection and disconnection of the power supply means is performed by inserting and removing the connection part on the power supply means side with the connection part on the cold storage side.

[0008]

1 to 5 show one embodiment of the present invention. FIG. 1 is a schematic configuration diagram of a cool storage device, FIG. 2 is a perspective view of a cool box, and FIG. 3 is a side sectional view thereof. FIG. 4 is a cross-sectional view of a main part showing a connection structure between the cool box and the cool storage device, and FIG. 5 is a cross-sectional view of a main part showing a connection structure between the cool box and the cable.

A cool box 10 shown in FIG. 1 includes a heat insulating box body 11 having a heat insulating property, a cool storage type cooler 12 for cooling the inside of the box, and a blower 13 for circulating air in the box. And so on.

The refrigerator compartment body 11 has an opening / closing door 11a on the front surface, and a partition plate 11b for covering the bottom and back sides is provided inside the refrigerator compartment body 11, and the partition plate 11b and the refrigerator compartment body 1 are provided.
A ventilation path 11c is formed between the air passage 11c and the inner surface of the air passage. A heat medium inlet 11d and an outlet 11e connected to the cool storage device 20 are provided at a lower rear portion of the cool box main body 11, and the heat medium inlet 11d and the outlet 11e are, for example, well-known automatic shut-off valves built-in. It is formed by a connecting device.

The cooler 12 includes a well-known regenerator 12a that freezes at about -25 ° C., for example, and a heat medium flow tube 12b that is in thermal contact with the regenerator 12a.
Both ends of b are connected to the heat medium inlet 11d and the outlet 11e of the cool box main body 11, respectively. In addition, the cooler 12
Is provided with a regenerator temperature sensor 12c for detecting the temperature of the regenerator.

The blower 13 is disposed on the upper end side of the ventilation passage 11c and has a battery 13a mounted on the cool box main body 11.
It is adapted to be driven by. That is, the blower 1
3, the air in the refrigerator is changed to the ventilation path 11c.
Is cooled by the cooler 12, and then discharged from the upper end of the ventilation passage 11c into the refrigerator through the rear surface of the refrigerator.

A regenerator 20 shown in FIG. 1 includes a heat medium circulating circuit 21 for circulating a heat medium through a heat medium circulation pipe 12b of a cool box 10, a heat medium tank 22 provided in the heat medium circulating circuit 21, A heat exchanger 23 for exchanging heat with the heat medium of the medium circulation circuit 21; a refrigeration circuit 24 as cooling means for cooling the heat medium of the heat exchanger 23; and a battery 13a of the cool box 10
, And a plurality of charging cables 26 serving as an energizing unit connecting the charger 25 and the battery 13 of the cool box 10.

The heat medium circulating circuit 21 has an inflow-side circuit 21 whose one end is branched so as to be connectable to a plurality of cool boxes 10.
a and the outflow side circuit 21b.
Is provided with a pump 21c for circulating a heat medium.
As the heat medium of the present embodiment, for example, a known brine that maintains a liquid state up to about −40 ° C. is used. One end of each of the inflow side circuit 21a and the outflow side circuit 21b is provided with a refrigerator 10
A connecting device 21d which can be detachably connected is attached to each of the heat medium inlet 11d and the outlet 11e, and the connecting device 21d has a well-known configuration with a built-in automatic closing valve. That is, as shown in FIG. 4, when the connecting device 21d is connected to the heat medium inlet 11d or the outlet 11e, an internal valve (not shown) is opened to allow the heat medium to flow, and when separated from each other, the valve is closed. Each opening is hermetically closed. Also, the inflow side circuit 21a and the outflow side circuit 21b of the heat medium circulation circuit 21
Are open to the heat medium tank 22, respectively. Further, the heat medium circulating circuit 21 is provided with a bypass circuit 21a 'for circulating the heat medium flowing out of the heat exchanger 23 without circulating the heat medium to the cool box 10 side.
1a 'is provided with a solenoid valve 21b'.

The heat medium tank 22 is formed so as to be able to store a predetermined amount of heat medium, and has a partition plate 22a for vertically partitioning the inside thereof.
have. One end of the heat medium tank 22 in the width direction communicates with the top and bottom of the partition plate 22a, and the other end of the inflow side circuit 21a of the heat medium circulation circuit 21 is disposed above the partition plate 22a, and below it. The other end of the outflow side circuit 21b is arranged.

Although the detailed illustration of the heat exchanger 23 is omitted,
The evaporator tube 24d of the refrigeration circuit 24 is disposed inside, and the heat medium flows around the evaporator tube 24d, thereby forming the evaporator tube 2d.
The 4d low-temperature refrigerant and the heat medium exchange heat with each other.

The refrigeration circuit 24 includes a compressor 24a, a condenser 2
4b, a known refrigeration cycle comprising an expansion valve 24c and an evaporating pipe 24d, and a low-temperature refrigerant flows through the evaporating pipe 24d by circulating the refrigerant in a direction indicated by a dashed arrow in the drawing by the compressor 24a. .

The charger 25 has a well-known configuration in which, for example, an AC voltage of a commercial power supply is converted into a DC voltage and the power is supplied to the battery 13a.

One end of each charging cable 26 is connected to the charger 25, and the other end is provided with a connecting portion 26a that can be connected to each cold storage 10 side. That is, the connecting portion 2 on the charging cable 26 side is provided on the front surface of each cool box 10.
6a is provided with a concave connecting portion 26b which can be freely inserted and removed.
When the connecting portion 26a of the charging cable 26 is inserted into the connecting portion 26b of the cool box 10, power is induced between the connecting coils 26c and 26d in the connecting portions 26a and 26b.

In the above configuration, when performing cold storage in the cool box 10, the heat medium circulation circuit 21 of the cool storage device 20 is connected to the heat medium inlet 11d and the outlet 11e of the cool box 10. At that time, in the regenerator 20, the heat medium of the heat medium circulation circuit 21 is circulated in the direction of the solid line arrow by the pump 21c, and the heat medium flowing through the heat exchanger 23 is cooled by the refrigeration circuit 24. Thereby, the heat medium cooled by the heat exchanger 23 flows through the heat medium flow pipe 12b of the cool box 10,
The regenerator 12a of the cooler 12 is formed by the heat medium flow pipe 12b.
Is cooled. The heat medium flowing out of the cold storage 10 flows into the heat medium tank 22 via the inflow side circuit 21 a of the heat medium circulation circuit 21, and the heat medium in the heat medium tank 22 flows out of the heat medium circulation circuit 21. 21b. At this time, in the heat medium tank 22, since the heat medium flows in above the partition plate 22a and flows out from below the partition plate 22a, the heat medium having a relatively high temperature flowing into the heat medium tank 22 is directly discharged to the outflow side. It does not flow into the circuit 21b. Next, after the cool storage device 20 completes the cold storage in the cool storage 10, the heat medium inlet 11 d and the outlet 11
By disconnecting the heat medium circulation circuit 21 of the cool storage device 20 from e, the cool box 10 is used for transporting articles.

In addition, when the cool storage 10 is stored, the battery 13a of the cool storage 10 is charged. In this case, even if there are a plurality of cool boxes 10, the battery 25a of each cool box 10 is charged by the charger 25 by connecting the charging cable 26 to each cool box 10.

As described above, according to the present embodiment, the charger 25 provided on the cold storage device 20 side is connected to the battery 13a of the cool box 10 via the charging cable 26,
Since the battery 13a of the cool box 10 is charged, the battery 13a of each cool box 10 can be charged by one charger 25 even if there are a plurality of cool boxes 10. Therefore, it is not necessary to mount a charger on the side of the cool box 10, and the cost of the cool box 10 can be reduced accordingly, and the weight of the cool box 10 can be reduced.

Further, the electric power on the charging cable 26 side is supplied to the battery 13a side of the cool box 10 by the induction coils 26c and 26d of the connecting portions 26a and 26b. In comparison, the structure can be simplified. In this case, the charging cable 2
6 is formed so as to be freely inserted into and removed from the connection portion 26b of the cool box 10, so that the connection and disconnection of the charging cable 26 can be performed extremely easily.

In the above embodiment, the charging cable 26
Induction coils 26c, 26
Although an example using d is shown, direct connection may be made using a well-known connector or the like.

[0025]

As described above, according to the cool storage device of the cold storage of claim 1, it is not necessary to mount a charger on the cold storage side, so that the cost of the cold storage can be reduced accordingly. In addition, it is possible to reduce the weight of the cool box. In addition, even if there are a plurality of cool boxes, the storage battery of each cool box can be charged by one charger, so that the cost required for the charger can be reduced.

According to the cool storage device of the cold storage of the second aspect, in addition to the effect of the first aspect, the connection structure between the power supply means and the cold storage can be simplified, which is extremely advantageous for practical use. is there.

Further, according to the cool storage device of the cool storage according to the third aspect, in addition to the effect of the second aspect, connection and disconnection of the power supply means can be performed very easily.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a cool storage device showing one embodiment of the present invention.

FIG. 2 is a perspective view of a cool box;

FIG. 3 is a cross-sectional side view of the cool box;

FIG. 4 is a sectional view of a main part showing a connection structure between a cool box and a cool storage device;

FIG. 5 is an essential part cross-sectional view showing a connection structure between a refrigerator box and a charging cable;

[Explanation of symbols]

10 ... cool box, 11 ... cool box body, 12 ... cooler, 12
a: regenerator, 12b: heat medium flow pipe, 13a: battery, 20: regenerator, 21: heat medium circulation circuit, 21c ...
Pump, 25 charger, 26 charging cable, 26a,
26b ... connection part, 26c, 26d ... induction coil.

Claims (3)

[Claims] 1. A cold storage main body capable of storing an arbitrary article therein, a cooler for cooling the inside of the refrigerator with a cold storage agent, and a heat medium flowing means for exchanging a liquid heat medium with the cold storage agent of the cooler. A storage battery for driving a predetermined device, wherein the cooling medium is stored in the cooler by flowing a heat medium cooled outside in advance through the heat medium flowing means. A heat medium circulating circuit detachably connected to the heat medium circulating means of the refrigerator and capable of circulating the heat medium through the heat medium circulating means of the cool box; a pump for circulating the heat medium of the heat medium circulating circuit; Cooling means for cooling the heat medium, and a charger which is detachably connected to the storage battery of at least one cold storage via a predetermined power supply means and charges the storage battery of the cold storage via the power supply means. Cool insulation characterized by Cold storage device. 2. The power supply device according to claim 1, wherein electric power on the power supply means side is supplied to the cold storage side by induction coils provided at connection portions between the power supply means side and the cold storage side. Cool storage device for cold storage. 3. The cool storage device according to claim 2, wherein the connection portion on the side of the power supply means is formed so as to be freely inserted into and removed from the connection portion on the cold storage side.