JPH07332886A - Heat accumulation unit - Google Patents

Abstract

PURPOSE:To make it possible to reduce cost of a heat accumulation unit and change its capacity easily. CONSTITUTION:A recessed groove 16 is formed at least on one side of a block- shaped vessel 15 into which a feat accumulation material is encapsulated. A plurality of block-shaped vessels 15 are stacked one upon another, where a heat exchanger tube is fitted in each of the recessed grooves 16 and clamped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage unit suitable for cooling a nap room.

[0002]

2. Description of the Related Art An example of a conventional vehicle air conditioner is shown in FIG.
Is shown in. A main cooling unit A having a main air conditioner evaporator 25, a blower 26, etc. is installed below the instrument panel 53, and a cold storage evaporator 29 and a cool storage material are provided in a nap room 51 formed in the rear part of the passenger compartment 50. A cold storage unit B having 29 etc. is installed.

A clutch 20 from a running engine (not shown)
The compressor 21 is driven through the compressor 21, and the refrigerant discharged from the compressor 21 enters the condenser 22 where it radiates heat to the outside to be condensed and liquefied. The liquid refrigerant is branched through the receiver 23, most of which is adiabatically expanded by the expansion valve 24, evaporated by cooling the vehicle interior air by the main air conditioning evaporator 25, and then compressed through the pressure control valve 17. Return to machine 21.

The branched portion is adiabatically expanded by the expansion valve 27, evaporated by cooling the cold storage material 28 by the cold storage evaporator 29, and then joined with the refrigerant flowing out from the pressure regulating valve 17 to form a compressor.
Inhaled on 21.

By adjusting the set pressure of the pressure adjusting valve 17, the amount of refrigerant flowing into the cold storage evaporator 29 is adjusted. In FIG. 4, 52 is a curtain, 54 is a nap bed,
56 is a drain pan and 57 is a drain hose.

[0006]

As shown in FIG. 5, the conventional cold storage unit B described above has one closed container 30 of a rectangular parallelepiped shape.
Since the regenerator material 28 that is liquid or gel at room temperature and the heat transfer tube that constitutes the regenerator evaporator 29 are housed in a meandering manner, the heat transfer tube 29 floats in the closed container 30. To prevent this, the heat transfer tube 29 is
If it is fixed at 1, there is a problem that the number of parts and the number of steps are increased and the cost is increased.

Further, in order to change the capacity of the cold storage unit B, it is necessary to separately design and manufacture the closed container 30 and the heat transfer tube 29, which causes a problem of increased cost.

[0008]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above problems, and its gist is to provide a groove on at least one surface of a block-shaped container in which a heat storage material is enclosed. The heat storage unit is characterized in that a plurality of the above-mentioned block-shaped containers are stacked and the heat transfer tubes are fitted in the respective concave grooves so that the heat transfer tubes are sandwiched.

Plate fins can be interposed between a plurality of heat transfer tubes, and a plurality of block-shaped containers can be stacked with the plate fins sandwiched therebetween.

A cover that covers the outside of the plurality of block-shaped containers can be attached to the base plate.

A plurality of block-shaped containers can be fastened to the base plate by attaching a fastening band to the outside thereof.

[0012]

In the present invention, the heat storage material enclosed in the plurality of block-shaped containers exchanges heat with the heat transfer tube through the block-shaped containers to be cooled or heated to store cold heat or warm heat.

If plate fins are provided between the plurality of heat transfer tubes, the heat storage material exchanges heat with the heat transfer tubes via the plate fins and the block-shaped container.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A first embodiment of the invention is shown in FIG. Inside the block-shaped container 15, the regenerator material 2 which is liquid or gel at room temperature is enclosed. The block-shaped container 15 is made of a material such as synthetic resin having a high thermal conductivity, has a rectangular parallelepiped shape, and has a groove 16 formed on at least one surface 15a thereof, as shown in FIG. 1 (C).

These block-shaped containers 15 are shown in FIGS. 1 (B) and 1 (D).
As shown in FIG. 5, a plurality of heat transfer tubes 1 bent in a meandering manner are fitted into the recessed grooves 16 to sandwich the heat transfer tubes 1 from both sides (in the example shown, front and rear six steps,
6 rows).

The plurality of block-shaped containers 15 stacked in this way are covered with a cover 13 made of aluminum or the like on the outer side, and by fixing the cover 13 to a base plate 14, they are connected to each other to form each block-shaped container. 15 are in close contact with each other, and also in close contact with the heat transfer tube 1, the cover 13 and the base plate 14.

When the refrigerant is circulated in the heat transfer tube 1,
When the cold storage material 2 is cooled through the block-shaped container 15, it undergoes a phase change to become a solid and stores cold heat. Then, this cold heat is radiated outside through the block-shaped container 15, the cover 13 and the base plate 14, and by this chilling, the cold storage material 2 undergoes a phase change and returns to a liquid or gel state.

Therefore, if a large number of block-shaped containers 15 in which the cold storage material 2 is enclosed are manufactured and placed in advance, the capacity of the heat storage unit 3 can be easily changed by adjusting the number of the heat storage units. The cost of 3 can be reduced.

FIG. 2 shows a second embodiment of the present invention. In the second embodiment, plate fins 17 are interposed between a plurality of heat transfer tubes 1 and a plurality of block-shaped containers 15 are stacked with the plate fins 17 sandwiched therebetween. The ends of the plate fins 17 are fixed to the base plate 14, but need not be fixed. Other configurations are shown in FIG.
The second embodiment is similar to the first embodiment shown in FIG. 3, and the corresponding members are designated by the same reference numerals.

In the second embodiment, the heat from the heat transfer tube 1 is transferred to the block-shaped container 15 via the plate fins 17 and the heat transfer area is increased, so that the cold storage performance is improved. Fixing the ends of the plate fins 17 to the base plate 14 also helps to fix the block-shaped container 15.

FIG. 3 shows a third embodiment of the present invention. In the third embodiment, as shown in FIG. 3 (B), a concave groove 18 for fitting a fastening band 19 is formed on the outer surface of the block-shaped container 15.

Then, as shown in FIG. 3 (A), after stacking a plurality of block-shaped containers 15, a fastening band 19 is hung on the outside thereof and fitted into the recessed groove 18, and the fastening band is
A plurality of block-shaped containers 15 are joined by fixing both ends of 19 to the base plate 14.

Since the third embodiment does not require the cover 13, the capacity of the cold storage unit 3 can be changed more easily.

The case of storing cold heat in the cold storage material has been described above. However, warm heat can be stored, and the cold heat or warm heat stored in the heat storage material can be taken out through the heat transfer tube.

[0025]

According to the present invention, a block container in which a heat storage material is enclosed can be manufactured and placed at low cost in advance.
Moreover, since the capacity of the heat storage unit can be easily changed by adjusting the number of block-shaped containers to be stacked, the cost of the heat storage unit can be reduced.

If plate fins are provided between the plurality of heat transfer tubes, the heat storage performance of the heat storage unit can be improved.

[Brief description of drawings]

1 shows a first embodiment of the present invention, (A) is an external perspective view, (B) is a vertical cross-sectional view, (C) is a perspective view of a block-shaped container,
(D) is a perspective view showing how to stack the block-shaped containers.

FIG. 2 is a partial vertical cross-sectional view showing a second embodiment of the present invention.

FIG. 3 shows a third embodiment of the present invention, (A) is an external perspective view, and (B) is a perspective view of a block-shaped container.

FIG. 4 is a schematic side view of a conventional vehicle air conditioner.

FIG. 5 shows a conventional cold storage unit, (A) is an external perspective view, and (B) is a vertical sectional view.

[Explanation of symbols]

 15 Block-shaped container 2 Heat storage material 1 Heat transfer tube 16 Groove 13 Cover 14 Base plate

Claims (4)

[Claims] 1. A recessed groove is formed on at least one surface of a block-shaped container in which a heat storage material is enclosed, a plurality of the block-shaped containers are stacked, and heat transfer tubes are fitted into the recessed grooves to sandwich them. A heat storage unit characterized by the fact that 2. The heat storage unit according to claim 1, wherein plate fins are interposed between the plurality of heat transfer tubes, and a plurality of block-shaped containers are stacked with the plate fins sandwiched therebetween. 3. A base plate is provided with a cover for covering the outer sides of the plurality of block-shaped containers.
The heat storage unit described. 4. The heat storage unit according to claim 1, wherein a plurality of block-shaped containers are fastened to the base plate by fastening bands on the outside thereof.