KR200191308Y1 - Cooling unit using peltier element and cooling apparatus using the same - Google Patents

Abstract

The present invention relates to a cooling unit using a Peltier element and a cooling device using the same, wherein the cooling unit and the cooling unit using the Peltier element comprise both ends of a heat exchanger at the center of the Peltier element having a heat dissipation surface and an endothermic surface. Arrange different distances to. That is, the distance from the center of the Peltier element to the end of the heat exchanger facing the flow direction of the fluid is shorter than the distance to the other end of the heat exchanger facing the flow direction of the fluid, so that the fluid flowing into the heat exchanger can be quickly Heat exchange, so that the heat exchange efficiency is improved. In addition, since the spacing of the heat exchange fins provided on the side where the fluid is introduced is denser than the spacing of the heat exchange fins provided on the side where the fluid is discharged, the heat exchange efficiency is further increased because the fluid flows in and out smoothly without being resisted by the flow of the fluid. Is improved.

Description

Cooling unit using Peltier element and cooling device using same {COOLING UNIT USING PELTIER ELEMENT AND COOLING APPARATUS USING THE SAME}

The present invention relates to a semiconductor device for temperature control, in particular, a cooling unit using a Peltier element and a cooling unit using a Peltier Element And Cooling Apparatus Using The Same.

The operation principle of a general temperature control Peltier element will be described with reference to FIG. 1.

When power is supplied to the Peltier element 10, it is transferred to the N-type semiconductor element 13a through the first contact metal plate 11a. Then, a current flows through the connection metal plate 15 and the P-type semiconductor element 13b to the second contact metal plate 11b. At this time, the heat dissipation phenomenon occurs in the first and second contact metal plates 11a and 11b, and the endothermic phenomenon occurs in the connection metal plate 15, thereby cooling.

A conventional cooling apparatus using the Peltier element 10 operated on the same principle will be described with reference to FIG. Figure 2 is a side cross-sectional view showing a conventional cooling device.

As shown, the Peltier element 10 is installed in the cabinet 20 forming the chamber 20a. The Peltier element 10 is in contact with the heat sink 21 and the heat absorbing plate 23 to exchange heat, and the heat sink 21 is cooled in contact with the oil of the oil storage unit 25 installed outside the cabinet 20, The plate 23 exchanges heat with air in the chamber 20a to generate cold air. Reference numerals 27 and 29 are tubes that are oil paths and pans forcing the oil to circulate.

Such a conventional cooling device is provided with an oil storage unit 25 for cooling the Peltier element 10, there is a disadvantage that the oil is leaked when used for a long time, and the oil must be replaced.

In order to solve this disadvantage, many air-cooled cooling apparatuses using Peltier elements have been developed, but the heat dissipation efficiency of the heat dissipation plate 21 is not good, and thus the heat absorption efficiency of the heat absorbing plate 23 is lowered.

The present invention was created to solve the above problems, and an object of the present invention is to provide a cooling unit using a Peltier element and a cooling device using the same that can improve the cooling efficiency.

1 is a conceptual diagram showing the operation of a typical Peltier element.

Figure 2 is a side cross-sectional view showing a conventional cooling device.

3 is a perspective view of a cooling unit according to an embodiment of the present invention.

4 is a partially exploded perspective view of FIG. 3.

5 is a cross-sectional view taken along the line A-A of FIG.

6 is a perspective view of a heat exchanger according to another embodiment of the present invention.

Figure 7 is a side cross-sectional view showing an embodiment of a cooling apparatus employing a cooling unit according to an embodiment of the present invention.

Figure 8 is a side cross-sectional view showing another embodiment of a cooling apparatus employing a cooling unit according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110: Peltier element. 121,125: first and second heat exchangers.

131,135: First and second outer plates. 141,145: first and second heat exchange fins.

150: connection member. 160: fastening member.

170: elastic member. 181,185: 1st and 2nd fan.

200: main body.

Cooling unit using a Peltier device according to the present invention for achieving the above object, Peltier device for dissipating heat on one side and absorbing heat on the other side; In close contact with the heat dissipating surface and the heat absorbing surface of the Peltier element, the distance from the center of the Peltier element to one end facing the flow direction of the fluid and the distance from the other end facing the flow direction of the fluid are different from each other. A pair of heat exchangers installed to exchange heat with the fluid; A pair of connections positioned between the pair of heat exchangers and mutually coupling the pair of heat exchangers to each other and in contact with both surfaces perpendicular to the heat dissipation surface and the heat absorption surface of the Peltier element to support the Peltier element A member is provided.

In addition, the cooling device using the Peltier device according to the present invention, the body for storing the object for cooling; A heat dissipating surface for dissipating heat toward the outside of the main body and a heat absorbing surface for absorbing heat toward the inner side of the main body; The heat dissipating surface and the heat absorbing surface of the Peltier element are in close contact with each other to exchange heat with the fluid flowing on the heat dissipating surface side and the heat absorbing surface side, and the distance from the center of the Peltier element to one end portion facing the flow direction of the fluid is fluid. A pair of heat exchangers installed shorter than the distance to the other end in the direction of flow of the; A pair of connections positioned between the pair of heat exchangers and mutually coupling the pair of heat exchangers to each other and in contact with both surfaces perpendicular to the heat dissipation surface and the heat absorption surface of the Peltier element to support the Peltier element A member is provided.

In addition, the main body for storing the object for cooling; A heat dissipating surface for dissipating heat toward the outside of the main body and a heat absorbing surface for absorbing heat toward the inner side of the main body; In close contact with the heat dissipation surface of the Peltier element, and heat-exchange with the fluid flowing on the heat dissipation surface side, the distance from the center of the Peltier element to one end facing the flow direction of the fluid, to the other end in the flow direction of the fluid A first heat exchanger installed shorter than a distance of the first heat exchanger; A cooling plate attached to the inner surface of the main body to be in close contact with the heat absorbing surface of the Peltier element so as to exchange heat with the fluid flowing on the heat absorbing surface side; Located between the first heat exchanger and the cooling plate, the first heat exchanger and the cooling plate are mutually coupled to each other, and are in contact with both surfaces perpendicular to the heat dissipation surface and the heat absorption surface of the Peltier element to support the Peltier element. It has a pair of connecting members.

Hereinafter, a cooling unit using a Peltier device and a cooling device using the same will be described in detail with reference to the accompanying drawings.

First, FIGS. 3, 4 and 5 will be described. 3 is a perspective view of a cooling unit according to one embodiment of the present invention, FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3.

As shown, the cooling unit 100 according to the present embodiment has a Peltier element 110 that one side 111 emits heat and the other side 113 absorbs heat when current is supplied.

The heat dissipating surface 111 and the heat absorbing surface 113 of the Peltier element 110 are in contact with the first and second heat exchangers 121 and 125 to increase the heat exchange efficiency by increasing the contact area with air. In this case, the first and second heat exchangers 121 and 125 are in contact with each other so as to be in close contact with the heat dissipating surface 111 and the heat absorbing surface 113.

In addition, the lengths La, Laa; Lb, and Lbb from the center O of the Peltier element 110 to both ends of the first and second heat exchangers 121 and 125 are different from each other. That is, the distances La and Lb from the center O of the Peltier element 110 to one ends of the first and second heat exchangers 121 and 125 are shorter than the distances Laa and Lbb to the other ends, respectively. do. This is to exchange heat to the first and second heat exchangers 121 and 125 in contact with the first and second heat exchangers 121 and 125 as soon as possible.

In detail, it is assumed that the fluid is introduced into one end of the first and second heat exchangers 121 and 125, and the Peltier element 110 is formed at one end of the first and second heat exchangers 121 and 125. When the distance to the center O is greater than or equal to a predetermined distance, the fluid adjacent to the first and second heat exchangers 121 and 125 may first heat exchange with the first and second heat exchangers 121 and 125. Then, the fluid flowing from the outside of one end of the first and second heat exchangers 121 and 125 to the first and second heat exchangers 121 and 125 to the first and second heat exchangers 121 and 125 and the fluid first exchanged with the fluid. After the heat exchange, heat exchange with the first and second heat exchangers (121, 125) is reduced heat exchange efficiency. To prevent this, the distances La and Lb from the center O of the Peltier element to one end of the first and second heat exchangers 121 and 125 are shorter than the distances Laa and Lbb to the other ends, respectively. It is.

In addition, the first and second heat exchangers 121 and 125 are provided with a plurality of first and second heat exchange fins 141 and 145 at predetermined intervals to widen the contact area with the fluid. When the first and second heat exchangers 121 and 125 are in contact with the Peltier element 110, the first and second heat exchange fins 141 and 145 are installed in parallel with the flow direction of the fluid. And, in the center O of the Peltier element 110, an end side of the first and second heat exchangers 121 and 125 that is shorter in length is disposed to face the flow direction of the fluid.

The first and second heat exchangers 121 and 125 further have first and second outer plates 131 and 135 extending from the first and second heat exchangers 121 and 125 and bent in a c and inverse c shapes, respectively. The first and second outer plates 131 and 135 form first and second flow paths 122 and 126 for guiding the fluid through the first and second heat exchangers 121 and 125. In this case, the lengths of the first and second outer plates 131 and 135 are provided to correspond to the lengths of the first and second heat exchangers 121 and 125.

A pair of connecting members 150 are provided to correspond to upper and lower edge portions of the first and second heat exchangers 121 and 125 that do not contact the Peltier element 110, and the first heat exchanger 121 and the connection member are provided. The 150 and the second heat exchanger 125 and the connection member 150 are coupled to each other by the fastening member 160. As a result, the first heat exchanger 121 and the second heat exchanger 125 are integrally coupled to each other.

The connection member 150 may be in contact with both side surfaces perpendicular to the heat dissipation surface 111 and the heat absorbing surface 113 of the Peltier element 110 to support the Peltier element 110. The connection member 150 has a plurality of support protrusions 151 formed to elastically support the Peltier element 110 while contacting a corner perpendicular to the heat dissipation surface 111 and the heat absorbing surface 113 of the Peltier element 110. do. In order for the support protrusion 151 to have elasticity, a part of a portion where the connection member 150 and the support protrusion 151 meet is dug into a groove 153 shape. This is to prevent the Peltier element 110 from being damaged by the pushing force of the connecting member 150 when the pair of connecting members 150 support the Peltier element 110 while pushing the Peltier element 110 in opposite directions.

The fastening member 160 has a body 161 and a head 163 having a diameter larger than the diameter of the body 161. The body 161 penetrates through the first and second heat exchangers 121 and 125 and is coupled to the connection member 150, and the head 163 supports the outer surfaces of the first and second heat exchangers 121 and 125 to peltier. The first and second heat exchangers 121 and 125 in contact with the element 110 are prevented from falling from the Peltier element 110. In this case, the first and second heat exchangers 121 and 125 are installed to be movable along the length direction of the body 161, and elasticity such as a spring is provided between the first and second heat exchangers 121 and 125 and the head 163. The member 170 is provided. The elastic member 170 allows the first and second heat exchangers 121 and 125 to be elastically contacted and supported by the Peltier element 110, and the Peltier element 110 is supported by the first heat exchanger 121 and the second heat exchanger. Tightly sandwiched between 125 to prevent damage.

Protruding surfaces 121a and 125a having substantially the same size as the heat dissipating surface 111 and the heat absorbing surface 113 of the Peltier element 110 are formed in the first and second heat exchangers 121 and 125. The protruding surfaces 121a and 125a are in contact with the Peltier element 110 and support the connection member 150 to be firmly seated between the first and second heat exchangers 121 and 125.

6 is a perspective view of a heat exchanger according to another embodiment of the present invention, and describes only differences from the heat exchanger according to an embodiment of the present invention.

The distance between the first heat exchange fins 141 provided in the first heat exchanger 121 is closer than that of the other end side where the one end side facing the flow direction of the fluid of the first heat exchanger 121 faces the flow direction of the fluid. Is formed. If the flow of the fluid discharged to the other end side of the first heat exchanger 121 is slower than the flow of the fluid introduced from one end of the first heat exchanger 121 and heat exchanged, the first heat exchanger 121 The fluid discharged to the other end side of the c) acts as a resistance to the flow of the fluid flowing into the one end side of the first heat exchanger 121 so that the flow of the fluid is not smooth, thereby preventing the heat exchange efficiency from being lowered. For sake. To this end, the first heat exchange fin 141a having a long length and the first heat exchange fin 141b having a short length are alternately arranged, but the heat exchange fin 141 at one end side of the first heat exchanger 121 into which fluid is introduced. ) Is denser than the other end side from which the fluid is discharged.

The second heat exchanger 125 may also be provided in the same manner as the first heat exchanger 121 and may be in contact with the Peltier element 110 as appropriate.

Next, it will be described that the cooling unit according to the present embodiment is employed in a refrigerator or the like. 7 is a side cross-sectional view showing an embodiment of a cooling apparatus employing a cooling unit according to an embodiment of the present invention.

A refrigerator main body 200 in which an object for cooling, for example, vegetables, fruits, foodstuffs, etc. is stored is provided, and a cooling unit 100 is installed in the main body 200. In this case, the heat dissipation surface 111 of the Peltier element 110 faces the outer side of the main body 200 and the heat absorbing surface 113 faces the inner side of the main body 200.

One end side of the first heat exchanger 121 corresponding to the short distance La among the distances from the center O of the Peltier element 110 to both ends of the first heat exchanger 121 is the flow direction of the fluid. It is installed to face the. Moreover, one end side of the second heat exchanger 125 corresponding to the short distance Lb among the distances from the center of the Peltier element 110 to both ends of the second heat exchanger 125 faces the flow direction of the fluid. To be installed.

In this state, the object heat-exchanged with the second heat exchanger 125 is cooled to a predetermined temperature, and the heat absorbed by the second heat exchanger 125 is repeatedly radiated through the first heat exchanger 121. While the cooling system is operating.

In the cooling apparatus according to the present embodiment, a first or second fan 181, 185 is further provided at one end side of the first and second heat exchangers 121 and 125 to forcibly increase the flow of fluid to improve cooling and heat dissipation efficiency. Can also be installed.

8 is a side cross-sectional view showing another embodiment of a cooling apparatus employing a cooling unit according to an embodiment of the present invention. This shows that the cooling unit according to the present embodiment is used for the water purifier, and only the difference from FIG. 7 will be described.

Instead of the second heat exchanger 125 shown in FIG. 7, a cooling plate 190 is installed along the inner surface of the main body 200 of the water purifier, and the heat absorbing surface 113 of the cooling plate 190 and the Peltier element 110 is provided. ) Is in direct contact. In addition, a plurality of heat exchange fins 191 are further provided on the cooling plate 190 to widen the contact area with the fluid circulating in the main body 200. In this state, when the water in the bucket 201 is supplied to the chamber 203 formed by the cooling plate 190, the water is heat-exchanged with the heat absorbing surface 113 of the Peltier element 100 is cooled to a predetermined temperature Heat exchange with the cold plate 190. Then, the water is cooled to a predetermined temperature and discharged to the drinker through the cock 205.

As described above, the cooling unit and the cooling device using the Peltier element according to the present invention, the distance from the center of the Peltier element having a heat dissipation surface and the heat absorption surface to both ends of the heat exchanger are arranged differently. That is, the distance from the center of the Peltier element to the end of the heat exchanger facing the flow direction of the fluid is shorter than the distance to the other end of the heat exchanger facing the flow direction of the fluid, so that the fluid flowing into the heat exchanger can be quickly Heat exchange, so that the heat exchange efficiency is improved.

In addition, since the spacing of the heat exchange fins provided on the side where the fluid is introduced is denser than the spacing of the heat exchange fins provided on the side where the fluid is discharged, the heat exchange efficiency is further increased because the fluid flows in and out smoothly without being resisted by the flow of the fluid. Is improved.

Although described above with reference to a preferred embodiment of the present invention, a person of ordinary skill in the art from the present invention described in the following utility model registration claims, various within the scope without departing from the spirit and scope of the present invention Of course, it is obvious that the modifications and changes belong to the present invention.

Claims (15)

A Peltier element that emits heat on one side and absorbs heat on the other side when current is supplied; In close contact with the heat dissipating surface and the heat absorbing surface of the Peltier element, the distance from the center of the Peltier element to one end facing the flow direction of the fluid and the distance from the other end facing the flow direction of the fluid are different from each other. A pair of heat exchangers installed to exchange heat with the fluid; A pair of connections positioned between the pair of heat exchangers and mutually coupling the pair of heat exchangers to each other and in contact with both surfaces perpendicular to the heat dissipation surface and the heat absorption surface of the Peltier element to support the Peltier element A cooling unit using a Peltier element, characterized by comprising a member. The method of claim 1, And the heat exchanger has a distance from the center of the Peltier element to one end facing the flow direction of the fluid shorter than the distance to the other end facing the flow direction of the fluid. The method of claim 1, And a support protrusion for elastically supporting and supporting the Peltier element in the connection member. The method of claim 1, A fastening member having a body fixed to the connection member through the heat exchanger and having a head having a diameter larger than the diameter of the body and in contact with an outer surface of the heat exchanger; And a resilient member positioned between the heat exchanger and the head to elastically support the heat exchanger and the Peltier element. The method of claim 1, The heat exchanger has a cooling unit using a Peltier element, wherein the heat exchanger has a protrusion surface that is substantially the same size as the heat dissipation surface and the heat absorption surface of the Peltier element, and contacts the Peltier element and simultaneously supports the connection member. . A body in which an object for cooling is stored; A heat dissipating surface for dissipating heat toward the outside of the main body and a heat absorbing surface for absorbing heat toward the inner side of the main body; In close contact with the heat dissipating surface and the heat absorbing surface of the Peltier element and heat-exchanging with the fluid flowing through the heat dissipating surface side and the heat absorbing surface side, the distance from the center of the Peltier element to one end opposite to the flow direction of the fluid, A pair of heat exchangers installed shorter than the distance to the other end in the flow direction; A pair of connections positioned between the pair of heat exchangers and mutually coupling the pair of heat exchangers to each other and in contact with both surfaces perpendicular to the heat dissipation surface and the heat absorption surface of the Peltier element to support the Peltier element Cooling apparatus using a Peltier element characterized in that it comprises a member. The method of claim 6, The heat exchanger is a cooling device using a Peltier element, characterized in that a plurality of heat exchange fins parallel to the flow direction of the fluid is provided at predetermined intervals. The method of claim 7, wherein Cooling apparatus using a Peltier element characterized in that the spacing of the heat exchange fins is more densely installed at one end side facing the flow direction of the fluid than the other end side facing the flow direction of the fluid. The method of claim 7, wherein The heat exchanger, the cooling device using a Peltier element, characterized in that the outer plate of the form covering the heat exchange fin is further provided so that a predetermined flow path through which the fluid passes. The method of claim 9, Cooling apparatus using the Peltier element, characterized in that the main body is further provided with a fan for forcibly introducing and discharging the fluid into the flow path. The method of claim 6, Cooling device using the Peltier element, characterized in that the connecting member is provided with a support projection for elastically supporting the Peltier element. The method of claim 6, A fastening member having a body fixed to the connection member through the heat exchanger and having a head having a diameter larger than the diameter of the body and in contact with an outer surface of the heat exchanger; And a resilient member positioned between the heat exchanger and the head to elastically support the heat exchanger and the Peltier element. The method of claim 6, The heat exchanger has a cooling unit using a Peltier element, wherein the heat exchanger has a protrusion surface that is substantially the same size as the heat dissipation surface and the heat absorption surface of the Peltier element, and contacts the Peltier element and simultaneously supports the connection member. . A body in which an object for cooling is stored; A heat dissipating surface for dissipating heat toward the outside of the main body and a heat absorbing surface for absorbing heat toward the inner side of the main body; In close contact with the heat dissipation surface of the Peltier element, and heat-exchange with the fluid flowing on the heat dissipation surface side, the distance from the center of the Peltier element to one end facing the flow direction of the fluid, to the other end in the flow direction of the fluid A first heat exchanger installed shorter than a distance of the first heat exchanger; A cooling plate attached to the inner surface of the main body to be in close contact with the heat absorbing surface of the Peltier element so as to exchange heat with the fluid flowing on the heat absorbing surface side; Located between the first heat exchanger and the cooling plate, the first heat exchanger and the cooling plate are mutually coupled to each other, and are in contact with each of two surfaces perpendicular to the heat dissipation surface and the heat absorbing surface of the Peltier element to support the Peltier element. Cooling apparatus using a Peltier element characterized in that it comprises a pair of connecting members. The method of claim 14, The cooling plate is a cooling device using a Peltier element, characterized in that the plurality of heat exchange fins parallel to the flow direction of the fluid is further provided at predetermined intervals.