KR20020057549A - refrigerator using thermoelectric element and installing method of thermoelectric element - Google Patents

Abstract

PURPOSE: A refrigerator using thermoelement and installation method of thermoelement are provided to improve thermal electric performance of the thermoelement. CONSTITUTION: A refrigerator includes a cold transmission part(21) and a heat transfer part(11) contacting with a thermoelement(10) to transfer heat and placed in an inside and an outside of a refrigerator, respectively; a heat intercepting member(31) made of heat insulating material and interposed between the cold transmission part and the heat transfer part on a side of the thermoelement; and a coupling member comprising screws(24) and coupling the heat intercepting part with at least one of the chilled air transfer part and the heat transfer part.

Description

Refrigerator and thermoelectric element installation method using a thermoelectric element {refrigerator using thermoelectric element and installing method of thermoelectric element}

The present invention relates to a refrigerator and a thermoelectric device installation method using a thermoelectric device, and more particularly, to improve the cooling efficiency of a thermoelectric device by blocking heat transfer between a cold air transfer unit and a heat transfer unit provided at both sides of the thermoelectric element. It relates to a refrigerator and a method of installing a thermoelectric element.

Recently, in addition to a cooling device using a refrigerant, a cooling method using the Peltier effect of a thermoelectric element has been developed.

In such a cooling method, when a conductor wire is connected to a thermoelectric element in which metals or semiconductors are formed to conduct current in one direction, heat absorption occurs in the half-reflective junction and heat dissipation occurs in the forward junction.

In the thermosiphon cooling apparatus using a thermoelectric element, as shown in FIG. 3, a thermoelectric element 31 is embedded in one side wall of a cabinet body forming a cooling chamber, and cold air is generated at a semi-junction of the thermoelectric element 31. In order to increase the cooling efficiency of the heat absorbing portion, since heat is generated in the forward junction, a cold air transfer block 36 and a cooler 38 accommodating a heat transfer medium are attached to the heat absorbing portion of the thermoelectric element 31, and the heat transfer portion is provided to the heat radiating portion. The heat transfer block 37 and the radiator 35 for accommodating the medium are installed, and the cooler 38 and the radiator 35 are fastened and fixed by the screw 33.

However, since the cooling device has a structure in which the radiator and the cooler are connected to each other by the screw 33, mutual heat transfer occurs between the cold air transfer block 36 and the heat transfer block 37 through the screw 33, thereby reducing the temperature of the cooler. Not effective In addition, since the thickness of the thermoelectric element is 3mm ~ 5mm, the separation distance between the cold air transfer block 36 and the heat transfer block 37 is formed to be very narrow, so there is a disadvantage in that the thermal permeation increases to decrease the cooling performance.

Accordingly, an object of the present invention is to provide a refrigerator and a thermoelectric element installation method using a thermoelectric element capable of improving the thermoelectric function of a thermoelectric element by blocking heat transfer between a cold air transfer portion and a cold air transfer portion by a heat shield member. .

1 is a side cross-sectional view of a refrigerator according to the present invention;

2 is a front perspective view of FIG. 1, FIG.

3 is a flowchart of a method of installing a thermoelectric element of a refrigerator according to the present invention;

4 is a side sectional view of a conventional cooling apparatus.

* Explanation of symbols for the main parts of the drawings

10: thermoelectric element 11: heat transfer unit

13: heat radiating fan 15: radiator

16a, 26a: heat transfer medium inlet 16b, 26b: heat transfer medium outlet

14, 24: screw 21: cold delivery unit

23: cooling fan 25: cooler

31: heat shield member

The object of the present invention is a refrigerator having a cabinet main body having a refrigerating chamber formed by a heat insulating wall and a thermoelectric element installed in a mounting hole formed through the heat insulating wall, wherein the refrigerator is in contact with the thermoelectric element to enable heat transfer. A cold air transfer unit and a heat transfer unit disposed in the inside and the outside of the refrigerating chamber, respectively; A heat shield member formed of a heat insulating material interposed between the cold air transfer unit and the heat transfer unit at a side of the thermoelectric element; It is achieved by including a fastening member for fastening at least one of the cold air transfer portion or the heat transfer portion and the heat shield.

The cold air transfer unit and the heat transfer unit receive a heat transfer medium, and has a flange portion extending along the plate surface of the heat insulating wall, and the fastening member penetrates the flange portion through the flange portion and is fastened to the heat shield by a heat shield. It is possible to prevent heat transfer between the heat transfer unit and the cold air transfer unit.

The volume of the cold air transfer unit may be greater than that of the heat transfer unit to increase the cooling efficiency of the thermoelectric element.

Preferably, the cold air transfer unit and the heat transfer unit are each provided with a heat exchange unit for extracting the heat transfer medium in the heat transfer unit and then performing heat exchange to return the heat transfer medium.

The heat exchange part on the cold air transfer part side includes a heat transfer medium inflow pipe connected to the upper part of the cold air transfer part and a heat transfer medium discharge pipe communicated to the lower part, and the heat transfer part on the heat transfer part side is connected to an upper part of the heat transfer medium connected to the upper part of the heat transfer part. It is effective to include a tube and a heat transfer medium outlet tube.

The diameter of the heat transfer medium inlet pipe formed on the heat transfer unit side is smaller than the heat transfer medium outlet pipe, and the heat transfer inlet pipe is installed to be introduced into the heat transfer unit to a predetermined depth so that the heat transfer medium can be efficiently flowed in and out.

Blowing fans are attached to each of the heat exchange parts to increase heat transfer efficiency.

On the other hand, according to another field of the present invention, the object is a step of installing a heat shield member having a receiving space of the thermoelectric element in the mounting hole; Fastening a cold air transfer part to the thermal barrier member at the cooling chamber side; Inserting the thermoelectric element into a receiving space in the thermal barrier member; It is also achieved by a method of installing a thermoelectric element of a refrigerator including a step of fixing a heat transfer part to the thermal barrier member outside the cooling chamber.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a side cross-sectional view of a refrigerator according to the present invention, Figure 2 is a front perspective view of the refrigerator. As shown in the figure, the refrigerator according to the present invention has a cabinet body having a cooling chamber 1 surrounded by a heat insulating material 40, and the thermoelectric element 10 is installed on one side wall of the cabinet body.

Here, the heat absorbing portion of the thermoelectric element 10 is provided toward the inside of the cooling chamber 1, and the heat radiating portion is provided toward the outside of the cooling chamber 1.

In the cooling chamber 1, a cooler 25 and a cooling fan 23 functioning as heat exchangers for efficiently supplying cold air generated in the heat absorbing portion of the thermoelectric element 10 to the cooling chamber 1 are provided. The radiator 15 and the radiator fan 13 for cooling the heat of the radiator are installed outside the cooling chamber 1.

The heat absorbing part of the thermoelectric element 10 is made of a material having high thermal conductivity and is provided with a cold air transmitting part 21 for receiving a heat transfer medium, and a heat transfer part 11 is attached to the heat radiating part.

The cold air transfer part 21 has a rectangular front end face and accommodates a heat transfer medium therein in a cylindrical shape having a receiving space. The flange 29 for fastening the screw 24 is extended to the upper surface and the lower surface of the cold air | gas transmission part 21 by the predetermined distance, and the screw insertion hole which is not shown in the flange 29 is provided. In addition, a heat transfer medium inlet pipe 26a through which the heat transfer medium flows is formed in the upper surface of the cold air transfer unit 21 adjacent to the flange 29, and a heat transfer medium outlet pipe 26b is formed in the bottom surface of the cold air transfer unit 21. have.

The heat transfer part 11 has a rectangular cylinder shape in which a receiving space of the heat transfer medium is provided, and the side width of the square tube is narrower than that of the cold air transfer part 21, so that the heat dissipation part and the heat transfer part 11 of the thermoelectric element 10 are formed. As heat exchange is rapidly performed, the heat absorbing portion of the thermoelectric element 10 is easily absorbed.

Flange 19 for fastening the screw 14 along the circumferential direction is formed on the side surface of the heat transfer part 11, and screw insertion holes (not shown) are provided at both flanges 19 of the heat transfer part 11. Formed. The heat transfer medium inlet pipe 16a and the heat transfer medium outlet pipe 16b are formed through the upper surface of the heat transfer unit 11. The heat transfer medium inlet pipe 16a has a diameter smaller than that of the heat transfer medium outlet pipe 16b and extends into the heat transfer unit 11.

Meanwhile, around the thermoelectric element 10, the cold air transfer part 21, and the heat transfer part 11, a heat shield 31 is provided to block heat transfer between the cold air transfer part 21 and the heat transfer part 11. It is.

The heat shield 31 is formed of a plastic material having a low heat transfer rate, and is formed by cutting the letter 'B' from the end to fit with the engaging jaw formed in the flange 29 of the cold air transfer unit 21 and the heat transfer unit 11. It is plate shape of predetermined thickness provided with a latching part.

As a result, the screw 24 is inserted into the upper and lower flanges 29 of the cold air transfer unit 21 to be fixed through the heat-transfer unit 31, and the trains are provided through both side flanges 19 of the heat transfer unit 11. The screw 14 of the heat transfer part 11 penetrated to the end 31 is alternately fastened with the screw 24 of the cold air transfer part 21.

In the method of installing a thermoelectric element of a refrigerator according to the present invention, as shown in FIG. 4, a heat shielding member 31 is installed with a thermoelectric element insertion space in a heat insulating wall (S1), and then cold air is formed in the cooling chamber 1. Inserting the transmission portion 21 is fixed with a screw 24 (S3), and after inserting the thermoelectric element 10 from the outside of the cabinet (S5), the heat transfer portion 11 is attached to the outside screw 14 Fasten to (S7).

By such a configuration, by installing a heat shield 31 between the cold air transfer unit 21 and the heat transfer unit 11 and staggered by separate screws 14 and 24, heat transfer can be blocked, and the heat shield 31 ) And the cold air transfer unit 21 to insert the thermoelectric element 10 to reduce the impact on the thermoelectric element to improve the reliability of the thermoelectric element.

As described above, according to the present invention, there is provided a refrigerator and a thermoelectric element installation method using a thermoelectric element capable of improving the thermoelectric function of the thermoelectric element by blocking the heat transfer between the cold air transfer portion and the cold air transfer portion by the thermal barrier member. do.

Claims (10)

In the refrigerator having a cabinet body having a refrigerating chamber formed by a heat insulating wall, and a thermoelectric element provided in the mounting hole formed through the heat insulating wall, A cold air transfer unit and a heat transfer unit that are in contact with the thermoelectric element so as to be heat-transferable and are respectively disposed inside and outside the refrigerating chamber; A heat shield member formed of a heat insulating material interposed between the cold air transfer unit and the heat transfer unit at a side of the thermoelectric element; And a fastening member configured to fasten at least one of the cold air transfer unit and the heat transfer unit to the heat shield. The method of claim 1, The cold air transfer unit and the heat transfer unit accommodates a heat transfer medium, And a flange portion extending along the plate surface of the heat insulation wall, wherein the fastening member passes through the flange portion and fastens to the heat shield portion. The method of claim 1, The refrigerator, characterized in that the volume of the cold air transfer portion is formed larger than the volume of the heat transfer portion. The method of claim 3, And a heat exchange part for extracting the heat transfer medium in the heat transfer part and returning it by heat exchange to the cold air transfer part and the heat transfer part. The method of claim 4, wherein And the heat exchange part comprises a heat transfer medium inlet pipe communicating with an upper portion of the cold air transfer part, and a heat transfer medium outlet pipe communicating with a lower portion thereof. The method of claim 4, wherein And the heat exchange part comprises a heat transfer medium inlet pipe and a heat transfer medium outlet pipe connected to an upper portion of the heat transfer part. The method of claim 6, And a diameter of the heat transfer medium inlet pipe is smaller than that of the heat transfer medium outlet pipe. The method of claim 6, And the heat transfer inlet pipe is installed to be inserted into the heat transfer unit at a predetermined depth. The method according to any one of claims 4 to 8, And a blower fan is attached to each of the heat exchange parts. In the method of installing a thermoelectric element of a refrigerator having a cabinet body having a refrigerating chamber formed by a heat insulating wall, and a thermoelectric element installed in a mounting hole formed through the heat insulating wall, Installing a thermal barrier member with a receiving space of the thermoelectric element in the mounting hole; Fastening a cold air transfer part to the thermal barrier member at the cooling chamber side; Inserting the thermoelectric element into a receiving space by the thermal barrier member; And installing a heat transfer part to the heat shield member outside the cooling chamber.