JPH10300308A - Thermoelectric module type electric refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce heat loss of a second circulating pump and cooling heat exchanger by providing an end plate at the exchanger, and disposing the pump near the plate. SOLUTION: Two end plates 21 are provided in a cooling heat exchanger 20. A cooling heat exchange pipe 30 is sandwiched between the plates 21 and reciprocated plural times between the plates 21. And, heat exchange fins 29 are provided on the periphery of the pipe 30 at a part between the two plates 21. Further, a second circulating pump 22 is fixed to the vicinity of an inside of the one plate 21, and the body of the pump 22 is disposed between the two plates 21. Thus, heat loss of the pump 22 and exchanger 20 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a Peltier.
The present invention relates to a thermoelectric modular electric refrigerator that cools the inside of a refrigerator using elements.

[0002]

2. Description of the Related Art A technique using a Peltier element in a refrigeration system is disclosed in Japanese Patent Publication No. 6-504361. Here, the Peltier element is, for example, an element in which a P-type semiconductor and an N-type semiconductor are arranged side by side, and is a member having a function of heating one surface by flowing an electric current and cooling the other surface.

[0003] The technique disclosed in Japanese Patent Publication No. 6-504361 discloses a technique in which a cooling water path for forcibly circulating cooling water is thermally coupled to each of a heat radiation surface and a cooling surface of a Peltier element. A heat exchanger is interposed in each cooling water path, and the object is cooled by a heat exchanger interposed in the cooling water path thermally coupled to the cooling surface of the Peltier element, or heat is applied to the heat radiation surface of the Peltier element. The target object is warmed by heat radiation in a heat exchanger interposed in the combined cooling water path.

[0004]

However, in order to realize a household electric refrigerator using the above technology, it is necessary to further improve the thermal efficiency, and the cooling water path (heat absorption) on the cooling surface side is required. The problem is how to reduce the heat loss of the system circuit). Further, in order to realize a household electric refrigerator using the above-described technology, it is required to operate the refrigerator with less vibration in the refrigerator. The present invention provides a thermoelectric module type electric refrigerator having a structure capable of reducing heat loss of a circulation pump and a cooling heat exchanger in a cooling water path (heat absorption circuit) on a cooling surface side and a structure in which vibration of the circulation pump is attenuated. The purpose is to:

[0005]

According to the present invention, there is provided a thermoelectric module type electric refrigerator, comprising: a manifold having a heat exchanging portion on each of a heat radiating surface and a cooling surface of the thermoelectric module; and a circulating path connected to the heat radiating and exchanging portion of the manifold. A first circulating pump and a heat-dissipating heat exchanger for forming and filling a liquid therein to form a heat-dissipating circuit; and a cooling-heat-exchanging unit of the manifold to form a circulation path for forming a circulating path, and a liquid therein. A second circulating pump for filling to form a heat absorption circuit and a cooling heat exchanger, wherein the cooling heat exchanger has an end plate; and the second circulating pump is connected to an end of the cooling heat exchanger. It is characterized by being arranged near the plate.

According to the present invention, a thermoelectric modular electric refrigerator can be obtained in which the second circulation pump is also cooled and the heat loss of the cooling water path (heat absorbing system circuit) on the cooling surface side can be reduced. Further, according to the present invention, a thermoelectric modular electric refrigerator can be obtained in which the vibration of the circulation pump can be attenuated by the cooling heat exchanger.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The thermoelectric module type electric refrigerator according to the first aspect of the present invention has a manifold having heat exchange portions on the heat radiating surface and the cooling surface of the thermoelectric module, and a circulation path connected to the heat radiating exchange portion of the manifold. A first circulating pump and a heat-dissipating heat exchanger for forming and filling a liquid therein to form a heat-dissipating circuit; and a cooling-heat-exchanging unit of the manifold to form a circulation path for forming a circulating path, and a liquid therein. A second circulating pump for filling to form a heat absorption circuit and a cooling heat exchanger, wherein the cooling heat exchanger has an end plate; and the second circulating pump is connected to an end of the cooling heat exchanger. It is characterized by being arranged near the plate.

According to this configuration, the second circulation pump is also cooled, and the heat loss of the cooling water path (heat absorbing circuit) on the cooling surface side can be reduced.

According to a second aspect of the present invention, there is provided a thermoelectric module type electric refrigerator, wherein a manifold having a heat exchanging portion on each of a heat radiating surface and a cooling surface of the thermoelectric module is formed. A first circulating pump and a heat radiating heat exchanger for forming a heat radiating circuit by filling a liquid with the liquid, and forming a circulating path connected to a cooling heat exchanging part of the manifold, and filling the liquid therein to absorb heat. A second circulation pump forming a system circuit and a cooling heat exchanger, wherein the cooling heat exchanger has heat exchange fins, and fins of the cooling heat exchanger are provided around the second circulation pump. It is characterized by being arranged.

According to this configuration, the second circulating pump is entirely cooled, and the heat loss of the cooling water path (heat absorbing circuit) on the cooling surface side can be reduced.

According to a third aspect of the present invention, there is provided a thermoelectric module type electric refrigerator, wherein a manifold having a heat exchanging portion on each of a heat radiating surface and a cooling surface of the thermoelectric module is formed, and a circulating path is formed between the heat exchanging portion of the manifold and a liquid therein. A first circulating pump and a heat-dissipating heat exchanger for filling and forming a heat-dissipating circuit, and a second for forming a heat-dissipating circuit by forming a cooling-exchange section and a circulation path of the manifold and filling a liquid therein.
A circulating pump and a heat exchanger for cooling, wherein a liquid passage pipe of the heat exchanger for cooling is sandwiched by two end plates, and a fin for heat exchange is provided around the pipe, Two circulation pumps are disposed between the two end plates.

According to this configuration, the second circulating pump has:
Located between the end plates and placed in the atmosphere. Therefore, the heat loss of the circulation pump can be reduced.

According to a fourth aspect of the present invention, there is provided a thermoelectric module type electric refrigerator, wherein a liquid suction part and / or a liquid discharge part of the second circulation pump is directly connected to a liquid passage pipe of a cooling heat exchanger. I do.

According to this configuration, the heat loss due to the connection between the cooling heat exchanger and the second circulation pump can be reduced.

According to a fifth aspect of the present invention, there is provided a thermoelectric module type electric refrigerator, wherein a vibration isolator is provided in a liquid passage pipe of a cooling heat exchanger, and the second circulation pump is narrowly fixed by the vibration isolator. I do.

According to this configuration, the vibration of the second circulation pump can be attenuated. Hereinafter, a thermoelectric module type electric refrigerator of the present invention will be described based on each embodiment.

[0017]

FIG. 1 is a perspective view of a refrigerator according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of the refrigerator of FIG. FIG. 3 is a sectional view of the refrigerator of FIG. 2 taken along line BB. FIG.
FIG. 3 is a sectional view of a manifold. FIG. 5 is a front view of a modified embodiment of the heat exchanger for heat dissipation and the circulation pump. FIG.
FIG. 7 is a side view of another modified embodiment of the heat radiation heat exchanger and the circulation pump. FIG. 7 is a perspective view of another modified embodiment of the heat-exchanging heat exchanger and the circulation pump. FIG. 8 is a perspective view of still another modified embodiment of the heat exchanger for heat dissipation and the circulation pump.

As shown in FIGS. 1, 2 and 3, the casing of the thermoelectric module type electric refrigerator is pivotally supported by a shaft 3 so as to open and close the refrigerator main body 1 and the front opening 2 of the refrigerator main body 1. And a front door 4. The refrigerator body 1 has an in-compartment molded body 7 and a partition wall 6, and a heat insulating material 8 is filled between the both. In addition, there is a concave portion on the back surface of the refrigerator body 1, and a back plate 5 is provided with an interval between the partition wall 6 and
An outside room 9 surrounded by the partition 6 and the back plate 5 is formed. That is, the outside room 9 is located at a position on the back side of the refrigerator body 1, and the opening of the outside room 9 is closed by the back plate 5.

As shown in FIG. 2, a heat-radiating heat exchanger 10 is disposed at a lower portion of the outside chamber 9 formed between the back plate 5 and the partition 6. A first circulating pump 16 is provided in an intermediate portion of the outside chamber 9. The heat-exchanging heat exchanger 10 and the first circulating pump 16 are connected to the heat-exchanging section 12 of the manifold 11 by pipes to form a circulation path, and a liquid is filled therein to form a heat-dissipating circuit.

Here, the manifold 11 has a structure as shown in FIG. 4, has two shells 40 and 41, and incorporates a thermoelectric module 5 composed of a Peltier element between them. In the manifold 11, two cavities are formed with the thermoelectric module 5 interposed therebetween. One cavity of the manifold 11 functions as a heat exchange unit 12, and the other cavity functions as a cooling heat exchange unit 23.

A fan motor 13 is mounted on the upper part of the heat exchanger 10 for heat radiation, and forms a heat radiation path from an inlet 14 at the bottom of the outside chamber 9 to an outlet 15 at the upper part.

On the other hand, a partition 18 is also attached inside the in-compartment molded body 7, and a machine room 1
9 are formed. The above-described manifold 11 is fixed to a central portion of the in-compartment machine room 19, and a cooling heat exchanger 20 and a second circulation pump 22 are provided below the in-compartment machine room 19.

The cooling heat exchange section 2 of the manifold 11
3, the cooling heat exchanger 20 and the second circulation pump 22
A pipe is connected to form a circulation path, and the inside is filled with a liquid to form a heat absorption system circuit.

Here, a characteristic configuration of the thermoelectric module type electric refrigerator of the present embodiment is that the cooling heat exchanger 20 and the second circulation pump 22 are integrated. That is, the cooling heat exchanger 20 has two end plates 21 as shown in FIG. 3, and the cooling heat exchange pipe 30 is sandwiched between the two end plates 21 and has two end plates. 21 and a plurality of times. A heat exchange fin 29 is provided around the cooling heat exchange pipe 30 in a portion between the two end plates 21.

In this embodiment, the circulation pump 22 is directly fixed to the end plate 21 on the left side of the drawing.
More specifically, the circulation pump 22 includes the end plate 2
1 is fixed to the inner surface, and the main body of the circulation pump 22 is
It is arranged between two end plates 21. In the configuration shown in FIG. 3, the heat exchange fins 29 are arranged so as to collect all of the cooling heat exchange pipes 30 arranged in a reciprocating manner, and correspond to the mounting position of the circulation pump 22. There is no heat exchange fin in the cooling heat exchange pipe 30 at the site. In this embodiment, the liquid suction portion 27 of the second circulation pump 22 is directly connected to the cooling heat exchange pipe 30 at a position between the two end plates 21.

In this embodiment, the cooling heat exchanger 20 and the circulation pump 22 are integrated, and the liquid discharge section 28 of the cooling heat exchange section 23 of the manifold 11 is connected directly to the cooling heat exchanger 20 by piping. I have. That is, end plate 2
A second circulating pump 22 is fixed in the vicinity of the side surface of the first pipe,
A piping is connected to a cooling heat exchange part 23 of the manifold 11 above the cooling heat exchanger 20 to form a circulation path, and a liquid is filled therein to form a heat absorption system circuit.

A fan motor 24 is disposed above the partition 18 and cool air is circulated from an intake port 25 at a lower portion of the partition 18 to the discharge port 26 through the mechanical chamber 19 in the refrigerator.
Cool 7

In the above embodiment, the second circulating pump 22
Was fixed to the inner surface of the end plate 21, and the circulation pump 22 was disposed between the two end plates 21. This configuration has a high effect of placing the circulation pump 22 in a cooling atmosphere, and is a recommended configuration. However, the fixing position of the circulation pump 22 is not limited to the position in the embodiment, and may be fixed to the outer surface of the end plate 21.
In addition, the circulation pump 22 and the end plate 21 do not necessarily have to be integrated, and a certain effect can be expected if the second circulation pump is arranged near the end plate of the cooling heat exchanger.

In the above-described embodiment, all the heat exchange fins 29 have the same size, and the heat exchange fins 29 are arranged so as to put all the cooling heat exchange pipes 30 together. The cooling heat exchange pipe 30 at a position corresponding to the mounting position of the circulation pump 22 has no heat exchange fins. However, if the heat exchange fins 29 having different shapes depending on positions are used,
Heat exchange fins 29 can also be provided at a position corresponding to the mounting position of the circulation pump 22. FIG. 5 shows an example in which heat exchange fins 29 are provided also at a position corresponding to the mounting position of the circulation pump 22. In FIG. The fins 29 of the heat exchanger are arranged.

The structure of the circulating pump 22 is such that vibration is inevitably generated. Therefore, it is desirable to employ a vibration-proof structure. FIG. 6 shows an embodiment employing a vibration-proof structure. In the embodiment shown in FIG. 6, two pairs of opposed vibration dampers 31 for narrowly fixing the second circulating pump 22 are disposed above and below the cooling heat exchange pipe 30 of the cooling heat exchanger 20. . That is, the cooling heat exchanger 2 employed in this embodiment
Reference numeral 0 indicates that the cooling heat exchange pipe 30 is disposed between the two end plates 21 for five reciprocations as shown in FIG. The cooling heat exchange pipe 30 is supported through the end plate 21 at the time of the uppermost reciprocating pipe and the lowermost reciprocating pipe. It is folded back. Further, the circulation pump 22 is provided at a position sandwiched between the cooling heat exchange pipe 30 of the reciprocating pipe located at the uppermost stage and the cooling heat exchange pipe 30 of the reciprocating pipe located at the lowermost stage. A vibration isolator 31 is disposed on the cooling heat exchange pipe 30 of the uppermost reciprocating pipe and the cooling heat exchanger pipe 30 of the lowermost reciprocating pipe. Abuts,
The vibration of the circulation pump 22 is reduced by pressing the circulation pump 22 from above and below. Rubber or resin is used as the material of the vibration isolator 31.

In the embodiment shown in FIG. 6, the cooling heat exchange pipe 3 is provided at the fixed portion of the circulation pump 22 as described above.
0 was folded back immediately before the circulation pump 22, but as shown in FIG. 7, the arrangement interval of the cooling heat exchange pipes 30 was designed to be wide, and the circulation pump was reciprocated between the reciprocation intervals of the cooling heat exchange pipe 30. A configuration in which 22 is provided is also possible. In the case where the arrangement interval of the cooling heat exchange pipes 30 is designed to be wide as shown in FIG. 7, all the cooling heat exchange pipes 30 can be suspended on the two end plates 21, and the overall rigidity is improved. In addition, if the circulating pump 22 is brought into contact with the circulation pump 22 with a vibration isolating material interposed between the reciprocating intervals of the cooling heat exchange pipe 30, the circulating pump 22 is supported not only in the vertical direction but also in the horizontal direction, so that the circulating pump 22 is supported. The vibration effect is further improved.

FIG. 8 shows an example in which the arrangement intervals of the cooling heat exchange pipes 30 are designed to be wide, and the heat exchange fins 29 are also provided at a position corresponding to the mounting position of the circulation pump 22. The configuration of FIG. 8 not only has a high overall rigidity,
Heat loss is also very small.

In the above embodiment, the second circulating pump 22
Is directly connected to the heat exchange pipe 30 for cooling, but the liquid discharge part 28 of the second circulation pump 22 may be directly connected to the heat exchange pipe 30 for cooling.

[0034]

As described above, according to the present invention, a manifold having a heat exchanging portion on each of a heat radiating surface and a cooling surface of a thermoelectric module, and a circulating path connected to the heat radiating and exchanging portion of the manifold to form a circulation path therein. A first circulating pump and a heat-dissipating heat exchanger for filling a liquid to form a heat-dissipating circuit, and a circulation path connected to a cooling heat-exchanging unit of the manifold and filling the liquid therein to absorb heat; A second circulation pump forming a circuit and a cooling heat exchanger,
The cooling heat exchanger has an end plate,
Is disposed near the end plate of the cooling heat exchanger, and the second circulation pump is also cooled in the cooling system air passage, so that the cooling water path on the cooling surface side (heat absorbing system circuit) ), Heat loss can be reduced and thermal efficiency can be improved.

Further, by disposing cooling heat exchange fins around the second circulating pump, the entire circulating pump is cooled, and the cooling water path (heat absorbing circuit) on the cooling surface side is further cooled. Heat loss can be reduced and thermal efficiency can be improved. Further, since the second circulation pump is directly connected to the cooling heat exchange pipe, fluid loss in the cooling water path (heat absorbing system circuit) on the cooling surface side is reduced, and the cooling heat exchanger and the second heat pump are connected to the second heat pump. The connection between the two circulation pumps is shortened, the heat loss is reduced, and the thermal efficiency can be further improved. Further, a vibration isolator is provided to narrowly fix the main body of the second circulating pump with the heat exchange pipe for cooling, so that the vibration of the second circulating pump is attenuated without being directly transmitted to the refrigerator main body. In addition, the noise of the present circulation pump can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the refrigerator of FIG.

FIG. 3 is a cross-sectional view of the refrigerator of FIG.

FIG. 4 is a sectional view of a manifold.

FIG. 5 is a front view of a modified embodiment of the heat exchanger for heat dissipation and the circulation pump.

FIG. 6 is a side view of another modified embodiment of the heat exchanger for heat dissipation and the circulation pump.

FIG. 7 is a perspective view of another modified embodiment of the heat exchanger for heat dissipation and the circulation pump.

FIG. 8 is a perspective view of still another modified embodiment of the heat exchanger for radiating heat and the circulation pump.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator main body 10 Heat dissipation heat exchanger 11 Manifold 12 Heat dissipation exchange part 16 1st circulation pump 20 Cooling heat exchanger 21 End plate 22 2nd circulation pump 23 Cooling heat exchange section 27 Liquid suction of 2nd circulation pump Part 28 liquid discharge part of cooling heat exchange part 29 fin for heat exchange 30 heat exchange pipe for cooling 31 vibration damping material

Claims (5)

[Claims] 1. A manifold having a heat exchanging part on a heat radiating surface and a heat exchanging part on a cooling surface of a thermoelectric module, and forming a circulation path connected to the heat exchanging part of the manifold and filling a liquid therein to form a heat radiating circuit. A first circulating pump and a heat-dissipating heat exchanger to be formed, and a second circulating pump connected to the cooling heat-exchanging section of the manifold to form a circulating path and fill a liquid therein to form a heat-absorbing circuit And a cooling heat exchanger, wherein the cooling heat exchanger has an end plate, and the second circulating pump is disposed near an end plate of the cooling heat exchanger. 2. A manifold having a heat exchanging portion on each of a heat radiating surface and a cooling surface of a thermoelectric module, and a circulating path connected to the heat radiating and exchanging portion of the manifold to form a circulation path and fill a liquid therein to form a heat radiating circuit. A first circulating pump and a heat-dissipating heat exchanger to be formed, and a second circulating pump connected to the cooling heat-exchanging section of the manifold to form a circulating path and fill a liquid therein to form a heat-absorbing circuit And a heat exchanger for cooling, wherein the heat exchanger for cooling has fins for heat exchange, and the fins of the heat exchanger for cooling are arranged around the second circulation pump. 3. A manifold having a heat exchange portion on each of a heat radiating surface and a cooling surface of a thermoelectric module, a heat radiating exchange portion of the manifold, a circulation path formed therein, and a liquid filled therein to form a heat radiating circuit. (1) a circulation pump and a heat-radiating heat exchanger, and a second circulation pump and a cooling heat exchanger that form a circulation path with a cooling exchange section of the manifold and fill the inside thereof with a liquid to form a heat-absorbing circuit. The liquid passage pipe of the cooling heat exchanger is sandwiched by two end plates, and fins for heat exchange are provided around the pipe. Thermoelectric modular electric refrigerator placed between plates. 4. The thermoelectric device according to claim 1, wherein a liquid suction part and / or a liquid discharge part of the second circulation pump is directly connected to a liquid passage pipe of the cooling heat exchanger. Modular electric refrigerator. 5. The thermoelectric device according to claim 1, wherein a vibration isolator is provided in the liquid passage pipe of the cooling heat exchanger, and the second circulation pump is narrowly fixed by the vibration isolator. Modular electric refrigerator.