Heat exchanger

Abstract

To provide a heat exchanger in which heat exchange efficiency to a thermoelectric element is improved, power generation capacity can be adjusted by adjusting the number of heat exchangers, and power generation efficiency is maximized.SOLUTION: A heat exchange system 10 includes a first inclined member 2000 arranged to incline from one wall surface of a frame 3000 to one side of gas guide members 1400 of first and second heat exchangers 1000-1 and 1000-2, and a second inclined member 2100 arranged to incline from the other wall surface of the frame to the other side of the gas guide members of the first and second heat exchangers. Openings 3200 and 3202 are formed in the wall surface of the frame, and the one wall surface of the frame, the first inclined member, the gas guide members, the second inclined member, and the other wall surface of the frame are sequentially arranged along a first direction. The first and second inclined members guide high-temperature gas flowing into the heat exchange system toward a region where the thermoelectric module 1200 is arranged, whereby it is possible to improve power generation efficiency.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to a heat conversion device, and more particularly to a heat conversion device that uses heat from hot gas to generate electricity. This relates to a conversion device. [Background technology]

[0002] Thermoelectric phenomena occur due to the movement of electrons and holes inside a material. This phenomenon refers to the direct conversion of energy between heat and electricity.

[0003] Thermoelectric elements are a general term for elements that utilize the thermoelectric phenomenon. P-type thermoelectric materials and N-type thermoelectric materials are placed between metal electrodes. The structure has a PN junction pair formed by bonding between them.

[0004] Thermoelectric elements are elements that utilize the temperature change of electrical resistance, a phenomenon in which an electromotive force is generated by a temperature difference. A device that utilizes the Seebeck effect, a phenomenon in which heat absorption or heat generation occurs due to electric current. They can be classified into elements that utilize the Loutier effect, etc.

[0005] Thermoelectric elements are widely used in home appliances, electronic components, communication components, etc. The element can be applied to cooling devices, heating devices, power generation devices, etc. The demands on thermoelectric performance are increasing.

[0006] Recently, it has become possible to generate electricity by using high-temperature waste heat generated by engines of automobiles and ships and thermoelectric elements. There is a need to generate electricity. At this time, a structure that can improve the power generation performance is required. do. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Korean Patent Publication No. 10-2015-0132209 (2015.11.25) [Patent Document 2] Korean Patent Publication No. 10-2017-0063817 (2017.06.08) [Patent Document 3] Korean Patent Publication No. 10-2018-0134070 (2018.12.18) Summary of the Invention [Problem to be solved by the invention]

[0008] The technical problem to be solved by the present invention is to provide a heat conversion device that uses waste heat to generate electricity. That is the thing. [Means for solving the problem]

[0009] The power generating device according to an embodiment of the present invention has a through hole that penetrates along a first direction and forms an inner surface. a case including a through hole; a second direction perpendicular to the first direction; a duct having a flow passage formed so that a first fluid flows along the direction of the duct; A first thermoelectric element including a first fin disposed on the first thermoelectric element. a module; a second thermoelectric element disposed on a second surface of the duct opposite the first surface; and a second thermoelectric module including a second fin disposed on the second thermoelectric element; and coupled to the case. a first guide portion of the duct, the first guide portion being disposed opposite to each other on the duct; a second guide portion disposed on a third surface formed between the first surface and the second surface; The second guide portion extends along the second direction between the first guide portions, and the first guide portions The first guide portion and the second guide portion each include an inclined surface, and the inclination of the inclined surface of the second guide portion The inclination angle is different from the inclination angles of the respective inclined surfaces of the plurality of first guide portions.

[0010] The inclined surface of the second guide portion may be disposed along the second direction.

[0011] The inclined surface of the first guide portion is configured to incline the second fluid in the first direction so that the second fluid flows along the first direction. The inclined surface of the second guide portion is inclined with respect to the first direction or the second direction, and the inclined surface of the second guide portion is inclined with respect to the second direction. The fluid may be inclined relative to a first direction so as to diverge and flow along the first direction.

[0012] The temperature of the second fluid may be greater than the temperature of the first fluid.

[0013] The duct is connected to the inner surface of the through hole of the case and has a plurality of opposed members. a body portion disposed between the plurality of support portions, The first guide portion is disposed on a plurality of support portions of the duct, and the second guide portion is disposed on the plurality of support portions of the duct. The device may be disposed on the body of the device.

[0014] The first guide portion and the second guide portion may not overlap with each other in the first direction.

[0015] The length of each of the plurality of support portions of the duct in the first direction is equal to or smaller than the length of the body portion of the duct in the first direction. The length of each of the plurality of support portions of the duct in the second direction is greater than the length of the body of the duct. It may be smaller than the length in the first direction of the body portion.

[0016] Each of the first guide parts includes a coupling part coupled to an inner surface of the through hole, The farther away from the coupling portion in the second direction, the more adjacent the duct may be.

[0017] The inclined surfaces of the first guide portions and the second guide portion do not overlap with each other in the second direction. This is also fine.

[0018] Each of the first guide portions includes a first end portion closest to the duct, and the second guide portions include a The guide portion may include an end portion in the second direction.

[0019] The support portion of the duct includes a side surface facing the second guide portion, and the first guide A plurality of first ends of the portion are disposed on the support portion of the duct, and the plurality of first ends are disposed on the side It can be adjacent to the face.

[0020] The first fin and the second fin may each extend in the first direction.

[0021] The first fin and the second fin are each spaced apart from the second guide portion by a predetermined distance in the first direction. Distance may be separated.

[0022] The duct includes a plurality of ducts spaced apart from one another, and each of the plurality of ducts is opposite to one another. a first surface facing the substrate and a second surface, the first thermoelectric module being disposed on the first surface; a plurality of one-sided thermoelectric modules disposed on the second surface; The thermoelectric module may include a plurality of other-side thermoelectric modules arranged.

[0023] The plurality of one-side thermoelectric modules include a plurality of first portions facing an inner surface of the through hole, and and a plurality of second parts facing the second thermoelectric module, The module includes a plurality of third portions facing the inner side surface of the through hole, and the first thermoelectric module. The fourth portion may include a plurality of fourth portions facing the ball.

[0024] The second part of the one side thermoelectric module may be spaced apart from the fourth part of the other side thermoelectric module by a predetermined distance. do.

[0025] The first thermoelectric module and the second thermoelectric module are each coupled to the duct. A plurality of first fastening portions may be included.

[0026] The first fastening portions may be spaced apart from one another along the second direction.

[0027] The second guide portion includes a plurality of grooves, the plurality of grooves being spaced apart from each other along the second direction. The above configuration may be adopted.

[0028] a plurality of second fastening portions disposed in the plurality of grooves of the second guide portion, The first fastening portion faces the first surface and the second surface of the duct, and the plurality of second fastening portions The joint faces a third surface of the duct, and the first surface and the second surface are connected to the third surface of the duct. It can be perpendicular to the surface.

[0029] A power generating device according to an embodiment of the present invention includes a duct through which a cooling fluid passes in a first direction; a first thermoelectric element disposed on a first surface of the substrate and a first heat dissipation fan disposed on the first thermoelectric element; a first thermoelectric module including a first inlet and a second inlet disposed parallel to the first surface of the duct; A second thermoelectric element is disposed on the surface, and a second heat dissipation fin is disposed on the second thermoelectric element. a second thermoelectric module including a first surface and a second surface of the duct; and a second thermoelectric module disposed between the first surface and the second surface of the duct. a gas guide member disposed on the first surface; a region in which the distance from the second surface to the center of the third surface becomes greater as the second surface moves toward the center of the third surface; The width between the outer side of the first heat dissipation fin and the outer side of the second heat dissipation fin is equal to the width of the gas guide portion. the gas guide member being larger than the width of the material and positioned to correspond to the center of the third surface; One of the regions directs incoming gas to the first thermoelectric module and the second thermoelectric module. and disposed on the third surface between the third surface and the gas guide member. a heat insulating member and a cylinder disposed on the heat insulating member between the third surface and the gas guide member; The thermal head further includes a thermal shield member.

[0030] The distance between the first surface and the first heat dissipation fin is the distance between the first surface and the first thermoelectric element. The distance between the second surface and the second heat dissipation fin is larger than the distance between the second surface and the second thermoelectric It may be greater than the distance between the elements.

[0031] The width between the outside of the first thermoelectric element and the outside of the second thermoelectric element is equal to or larger than the width of the gas guide member. It could be above.

[0032] The gas guide member is disposed between the first surface and the second surface and parallel to the third surface. A fourth surface may be disposed thereon.

[0033] The heat insulating member includes a first heat insulating surface disposed on the third surface, and a first heat insulating surface extending from the first heat insulating surface to the first surface. and a second thermoelectric element disposed on a portion of the first surface or a portion of the first thermoelectric element. a first insulating surface and a second insulating surface extending in a direction parallel to the second surface from the first insulating surface; a third heat insulating surface disposed on a portion of the second thermoelectric element, and the shielding member a first shield surface disposed on the first heat insulating surface; a second shield surface extending in a certain direction and disposed on at least a portion of the second insulating surface; At least a portion of the third insulating surface extends from the first shield surface in a direction parallel to the second surface. The shield may include a third shield surface disposed at

[0034] The gas guide member, the first shield surface, the first insulating surface and the third surface are fastened together. It can be connected.

[0035] An air layer may be formed between the gas guide member and the first shield surface.

[0036] A power generation system according to an embodiment of the present invention includes a first power generation device, a first power generation device, and a second power generation device. a second power generating device disposed at a predetermined distance from the first power generating device; a frame supporting the first power generating device and the second power generating device; Each of the second power generating units has a duct through which a cooling fluid passes in a first direction; a first thermoelectric element disposed on a surface and a first heat dissipation fin disposed on the first thermoelectric element a first thermoelectric module disposed on a second surface of the duct that is disposed parallel to the first surface of the duct; a second thermoelectric element including a second heat dissipation fin disposed on the second thermoelectric element; a module; and a third surface of the duct disposed between the first surface and the second surface of the duct. a first gas guide member disposed apart from the third surface; and A fourth surface is disposed parallel to the third surface and spaced apart from the fourth surface. a second gas guide member having a first surface and a second surface, a region in which the distance from the third surface increases as the distance from the surface increases toward the center of the third surface, The width between the outer side of the first heat dissipating fin and the outer side of the second heat dissipating fin is the first gas guide member being greater than the width and positioned to correspond to the center of the third surface; One of the regions directs incoming gas to the first thermoelectric module and the second thermoelectric module. The frame is oriented perpendicular to the first direction so that the gas passes through the frame. An opening is formed on both sides of the first surface and a second direction parallel to the second surface, and the cooling fluid The gas is passed through the first power generating device by openings on both sides of the first direction. It passes between a second thermoelectric module and the first thermoelectric module of the second power generator.

[0037] A first gas guide portion of the first power generating device and the second power generating device from one wall surface of the frame A first inclined member is disposed so as to incline to one side of the frame, and a second inclined member is disposed so as to incline to one side of the frame. The first power generating device and the second power generating device are inclined to the other side of the first gas guide member. a second inclined member disposed on the first wall of the frame, the first inclined member, and the front The first gas guide member, the second inclined member, and the other wall surface of the frame are arranged in the first direction. They can be arranged in sequence along the line.

[0038] The first power generating device and the second power generating device are each disposed at one end of the duct. A fluid inlet portion into which the cooling fluid flows and a cooling fluid outlet portion are disposed at the other end of the duct. The first inclined member extends from one wall surface of the frame to a front side. The second inclined member extends toward the boundary between the duct and the fluid inlet. It extends from the other wall surface toward the boundary between the duct and the fluid outlet. Effect of the Invention

[0039] According to the embodiment of the present invention, a heat exchanger having excellent power generation performance can be obtained. According to the embodiment of the present invention, the number of parts used and the volume occupied are reduced, making the assembly easy and Furthermore, according to the embodiment of the present invention, a thermal conversion device having excellent power generation performance can be obtained. It is possible to obtain a heat exchange device with improved heat transfer efficiency to the thermoelectric element. According to the embodiment, the power generation capacity can be adjusted by adjusting the number of heat conversion devices. According to an embodiment of the invention, the contact area between the high temperature gas and the heat dissipation fins of the thermoelectric module is maximized. This can maximize the power generation efficiency. [Brief description of the drawings]

[0040] [Figure 1] 1 is a cross-sectional view of a heat exchange device according to an embodiment of the present invention. [Diagram 2] 1 is a perspective view of a heat exchange device according to an embodiment of the present invention; [Diagram 3] 1 is an exploded perspective view of a heat exchanger according to an embodiment of the present invention; [Figure 4] 1 is a partial cross-sectional view of a heat conversion system including a heat conversion device according to an embodiment of the present invention. [Diagram 5] 1 is a partial perspective view of a thermal conversion system including a thermal conversion device according to an embodiment of the present invention. [Figure 6] 2 is a cross-sectional view of a thermoelectric element included in a thermoelectric module according to an embodiment of the present invention. [Figure 7] 1 is a perspective view of a thermoelectric element included in a thermoelectric module according to an embodiment of the present invention; [Figure 8] 1 is a partial perspective view of a heat exchanger according to an embodiment of the present invention; [Figure 9] 13 shows various modifications regarding the height and shape of a gas guide member according to an embodiment of the present invention. [Figure 10] FIG. 11 is a perspective view of a heat exchange device according to another embodiment of the present invention. [Figure 11]11 is a perspective view of a heat conversion system including the heat conversion device of FIG. 10. [Figure 12] 11 is a perspective view of a heat conversion system including the heat conversion device of FIG. 10. [Figure 13] 11 is a perspective view of a heat conversion system including the heat conversion device of FIG. 10. [Figure 14] 11 is a perspective view of a heat conversion system including the heat conversion device of FIG. 10. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0041] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0042] However, the technical idea of ​​the present invention is not limited to some of the embodiments described. The present invention may be embodied in various different forms, and any variations therein may be included within the scope of the present invention. One or more of the elements may be selectively combined or substituted.

[0043] Furthermore, terms (including technical and scientific terms) used in the embodiments of the present invention are expressly and specifically defined. Unless otherwise specified and described, the present invention will be understood by those skilled in the art to which the present invention pertains. Terms that can be interpreted in a way that is understandable and commonly used, such as terms defined in a dictionary, The meaning may be interpreted taking into account the contextual meaning of the relevant art.

[0044] In addition, the terms used in the embodiments of the present invention are intended to describe the embodiments and do not limit the present invention. It is not an attempt to limit

[0045] In this specification, the singular can include the plural unless the context clearly dictates otherwise, and includes "A and ( If it says "and) at least one of B and C (or more than one)", then it is A, B and C. It may include one or more of all possible combinations.

[0046] In addition, in the description of the components of the embodiment of the present invention, first, second, A, B, (a), (b) Terms such as:

[0047] Such terms are merely used to distinguish one component from another, and The present invention is not limited to the nature, order, or sequence of the relevant components.

[0048] And, when a component is described as being "coupled," "connected," or "connected" to another component, When a component is connected to, or is directly coupled to, any other component, Not only that, but also other components between that component and the other components make it " This also includes cases where the terms are "coupled," "connected," or "connected."

[0049] In addition, it is described as being formed or placed "above or below" each component. When two components are in direct contact with each other, "up" or "down" refers to cases where the two components are in direct contact with each other. In addition, one or more further components may be formed or disposed between the two components. Also, when it is expressed as "upper" or "lower", it is a single component. Based on this, the meaning of not only the upward direction but also the downward direction can be included.

[0050] FIG. 1 is a cross-sectional view of a heat exchanger according to an embodiment of the present invention, and FIG. FIG. 3 is an exploded perspective view of a thermal exchange device according to an embodiment of the present invention. FIG. 4 is a partial cross-sectional view of a heat conversion system including a heat conversion device according to an embodiment of the present invention. FIG. 5 is a partial perspective view of a heat conversion system including a heat conversion device according to an embodiment of the present invention. .

[0051] FIG. 6 is a cross-sectional view of a thermoelectric element included in a thermoelectric module according to an embodiment of the present invention, and FIG. 1 is a perspective view of a thermoelectric element included in a thermoelectric module according to an embodiment of the present invention.

[0052] 1 to 5, the thermal conversion device 1000 includes a duct 1100, a first thermoelectric module 12, and a second thermoelectric module 13. 100, a second thermoelectric module 1300 and a gas guide member 1400. The heat exchange system may include a plurality of the heat exchange devices 1000 shown in FIGS. The thermal conversion devices 1000-1, 1000-2, and 1000-3 are arranged at a predetermined interval. It can be done.

[0053] The heat exchanger 1000 according to the embodiment of the present invention is a cooling device that flows through the inside of the duct 1100. The temperature difference between the operating fluid and the hot gas passing outside the duct 1100 is used to generate electricity. Accordingly, in this specification, the heat conversion device may be referred to as a power generation device. In this specification, the fluid flowing through the inside of the duct 1100 is referred to as the first fluid. The gas passing through the outside of 1100 can be referred to as the second fluid. The body temperature may be greater than the temperature of the first fluid.

[0054] For this purpose, a first thermoelectric module 1200 is arranged on one surface of the duct 1100 and a second thermoelectric module 1200 is arranged on one surface of the duct 1100. The thermoelectric module 1300 may be disposed on another surface of the duct 1100. In this case, the first thermoelectric module The duct 1100 on both sides of the module 1200 and the second thermoelectric module 1300 The surface facing the hot side is the low-temperature side, and the temperature difference between the low-temperature side and the high-temperature side is used to generate electricity. can be produced.

[0055] The cooling fluid flowing into duct 1100 can be, but is not limited to, water. The cooling fluid flowing into the duct 1100 may be any type of fluid having cooling properties. The temperature may be less than 100° C., preferably less than 50° C., and more preferably less than 40° C. However, the present invention is not limited to this. The cooling fluid discharged after passing through the duct 1100 The temperature of each duct 110 may be higher than the temperature of the cooling fluid entering the duct 1100. 0 is disposed so as to face the first surface 1110 and be parallel to the first surface 1110. a second surface 1120 disposed between the first surface 1110 and the second surface 1120; and a third surface 1130 disposed between the first surface 1110 and the second surface 1120. and disposed between the first surface 1110 and the second surface 1120 so as to face the third surface 1130. The first surface 1110, the second surface 1120, the third surface 1130 and the fourth surface 1140 are included. The surface 1140 defines a duct through which a cooling fluid passes. The cooling fluid flows into the cooling unit 1100 through the inlet and is discharged through the outlet. To facilitate the inflow and outflow of the operating fluid and to support the duct 1100, The cooling fluid inlet side and the cooling fluid outlet side of the cooling fluid are provided with an inlet flange 310 and a cooling fluid outlet flange 311, respectively. The inlet flange 1500 and the outlet flange 1600 may further be disposed. The flanges 1600 are arranged to correspond to the cooling fluid inlet and the cooling fluid outlet, respectively. The inlet flange 1500 has an opening formed in a plate shape. The size, shape and position of the cooling fluid inlet of the duct 1100 are formed to match each other. An opening (not shown) formed in the outlet flange 1600 is provided for cooling the duct 1100. The fluid outlet may be formed to match in size, shape and location.

[0056] Although not shown, heat dissipation fins may be arranged on the inner wall of the duct 1100. The shape, number, and area of ​​the inner wall of the duct 1100 are determined based on the temperature of the cooling fluid, the waste heat, and the like. The heat dissipation fins may be changed in various ways depending on the temperature of the duct 110, the required power generation capacity, etc. The area of ​​the inner wall of the duct 1100 may be, for example, 1 to 40% of the cross-sectional area of ​​the duct 1100. According to the study, it is possible to obtain high thermoelectric conversion efficiency without interfering with the flow of the cooling fluid. In this case, the heat dissipation fins must have a shape that does not impede the flow of the cooling fluid. For example, the heat dissipation fins can be formed along the direction in which the cooling fluid flows. The heat dissipation fin is a plate extending in a direction from the cooling fluid inlet to the cooling fluid outlet. The heat dissipation fins may be arranged at predetermined intervals. The duct 1100 may be integrally formed with the inner wall of the duct 1100 .

[0057] The inside of the duct 1100 may be divided into a plurality of regions. When the duct 1100 is divided into multiple regions, the flow rate of the cooling fluid is such that the inside of the duct 1100 is filled with the cooling fluid. Since the cooling fluid can be evenly distributed within the duct 1100 even if it is not enough to fill it, It is possible to obtain uniform thermoelectric conversion efficiency over the entire surface of the duct 1100.

[0058] Meanwhile, the first thermoelectric module 1200 is included in the first surface 1110 of the duct 1100. A second thermoelectric module 1300 is disposed on the first surface 1112 facing outward. A second surface 1120 of the duct 1100 is included in the second face 1120 and is disposed toward the outside of the duct. 122 is disposed symmetrically to the first thermoelectric module 1200 .

[0059] Here, the first thermoelectric module 1200 and the second thermoelectric module 1200 are symmetrical. The second thermoelectric module 1300 arranged as above is called a pair of thermoelectric modules or a unit thermoelectric module. It may also be referred to as a rule.

[0060] In this specification, a pair of thermoelectric modules is arranged for each duct 1100 as an example. However, the present invention is not limited to this. For each duct 1100, multiple pairs of thermoelectric modules may be provided. In other words, a plurality of unit thermoelectric modules may be arranged. This allows the size and number of unit thermoelectric modules to be adjusted.

[0061] At this time, at least one of the plurality of first thermoelectric modules 1200 connected to the duct 1100 The sections are electrically connected to each other using bus bars (not shown) and are connected to the duct 1100. At least some of the second thermoelectric modules 1300 are connected to another bus bar (not shown). The busbars may be electrically connected to each other using, for example, a heat exchanger through which hot gas is exhausted. The first thermoelectric module may be disposed on the exhaust port side and connected to an external terminal. A PCB for the thermoelectric module 1200 and a plurality of second thermoelectric modules 1300 are provided inside the thermal conversion device. The plurality of first thermoelectric modules 1200 and the plurality of second thermoelectric modules 1 300 can be powered, thus simplifying the design and assembly of the heat conversion device.

[0062] The first thermoelectric module 1200 and the second thermoelectric module 1300 are connected by using a screw. The first thermoelectric module 1200 and the second thermoelectric module 1200 may be connected to the duct 1100. The electrical module 1300 can be stably coupled to a surface of the duct 1100; or At least one of the first thermoelectric module 1200 and the second thermoelectric module 1300 Using thermal interface material (TIM) It may be glued to the surface of the duct 1100 .

[0063] On the other hand, the first thermoelectric module 1200 and the second thermoelectric module 1300 each have a first Thermoelectric elements 1210, 1310 disposed on the surface 1112 and the second surface 1122, respectively and heat dissipation fins 1220, 1320 arranged on the thermoelectric elements 1210, 1310. At this time, the distance between the first surface 1112 and the first heat dissipation fin 1220 is The distance between the second surface 1122 and the second heat dissipation fin 1320 is greater than the distance between the elements 1210. may be greater than the distance between the second surface 1122 and the thermoelectric element 1310. A duct 1100 through which a cooling fluid flows is disposed on one of both sides of the elements 1210 and 1310. The heat dissipation fins 1220 and 1320 are arranged on the other surface. When high-temperature gas passes through the thermoelectric element 1210, the temperature between the heat absorbing surface and the heat radiating surface of the thermoelectric element 1210, 1310 increases. The difference can be increased, and accordingly, the thermoelectric conversion efficiency can be increased. The heat sink fins 1220 and 1320 serve to dissipate heat. It may refer to not only fins but also fins that absorb heat. For example, a heat dissipation fin 1 220, 1320 are between the multiple heat conversion devices 1000-1, 1000-2, 1000-3 The high-temperature parts of the thermoelectric elements 1210 and 1310, i.e., the heat-absorbing surfaces, absorb heat from the passing high-temperature gas. Accordingly, the heat dissipation fins 1220 and 1320 are heat receiving fins. Alternatively, they may be referred to as heat absorbing fins.

[0064] At this time, the structure of the thermoelectric elements 1210 and 1310 is the same as that of the thermoelectric element 100 illustrated in FIGS. 6 to 7, the thermoelectric device 100 includes a lower substrate 110, a lower A bottom electrode 120, a P-type thermoelectric leg 130, an N-type thermoelectric leg 140, a top electrode 150 and a top The circuit board 160 includes a main board 160.

[0065] The lower electrode 120 is connected to the lower substrate 110 and the P-type thermoelectric leg 130 and the N-type thermoelectric leg 140. The upper electrode 150 is disposed between the upper substrate 160 and the P-type thermoelectric leg 130 and and the upper bottom surface of the N-type thermoelectric leg 140. Accordingly, a plurality of P-type thermoelectric legs The N-type thermoelectric legs 130 and the multiple N-type thermoelectric legs 140 are connected by the lower electrode 120 and the upper electrode 150. The lower electrode 120 and the upper electrode 150 are disposed between each other and electrically connected to each other. A pair of P-type thermoelectric legs 130 and N-type thermoelectric legs 140 connected together form a unit cell. It is possible.

[0066] For example, a voltage is applied to the lower electrode 120 and the upper electrode 150 through the lead wires 181 and 182. When a voltage is applied, the substrate absorbs heat as current flows from the P-type thermoelectric leg 130 to the N-type thermoelectric leg 140. The substrate acts as a surface through which current flows from the N-type thermoelectric leg 140 to the P-type thermoelectric leg 130. It can act as a heat dissipation surface.

[0067] Here, the P-type thermoelectric leg 130 and the N-type thermoelectric leg 140 are made of bismuth (Bi) and It can be a bismuth telluride (Bi-Te)-based thermoelectric leg containing tellurium (Ti) as the main raw material. The P-type thermoelectric leg 130 is made of antimony (Sb), nickel, etc., with the total weight being 100 wt%. Ni, Aluminum (Al), Copper (Cu), Silver (Ag), Lead (Pb), Boron (B ), Gallium (Ga), Tellurium (Te), Bismuth (Bi) and Indium (In) Bismuth telluride (Bi-Te)-based main raw material containing at least one of the following: 99~99. The thermoelectric leg contains 999 wt% and a mixture containing 0.001 to 1 wt% of Bi or Te. For example, if the main raw material is Bi-Se-Te, and Bi or Te accounts for 0.01% of the total weight, The N-type thermoelectric leg 140 may further include 0.001 to 1 wt % of the total weight of 100 Selenium (Se), nickel (Ni), aluminum (Al), copper (C) u), silver (Ag), lead (Pb), boron (B), gallium (Ga), tellurium (Te), bi Bismuth tellurite containing at least one of smectic (Bi) and indium (In) Bi-Te-based main raw material 99~99.999wt% and mixture containing Bi or Te For example, the main raw material may be Bi-Sb- Te, and may further contain Bi or Te in an amount of 0.001 to 1 wt% of the total weight. do.

[0068] The P-type thermoelectric leg 130 and the N-type thermoelectric leg 140 may be formed in a bulk type or a stacked type. Generally, the bulk type P-type thermoelectric leg 130 or the bulk type N-type thermoelectric leg 140 is a thermoelectric The material is heat-treated to produce ingots, which are then crushed and sieved. After obtaining the powder for the thermoelectric leg, it is sintered and the sintered body is cut into pieces. The stacked P-type thermoelectric leg 130 or the stacked N-type thermoelectric leg 140 can be obtained in a sheet form. A paste containing a thermoelectric material is applied onto the substrate to form unit members, and then the unit members are stacked. It can be obtained through a cutting process.

[0069] At this time, the pair of P-type thermoelectric legs 130 and N-type thermoelectric legs 140 have the same shape and volume. or may have different shapes and volumes. For example, P-type thermoelectric Since the electrical conductivity characteristics of the N-type thermoelectric leg 130 and the N-type thermoelectric leg 140 are different, The height or cross-sectional area may be formed differently from the height or cross-sectional area of ​​the P-type thermoelectric leg 130. good.

[0070] The performance of the thermoelectric device according to an embodiment of the present invention can be expressed by a thermoelectric figure of merit. The number (ZT) can be expressed as in Equation 1. Equation 1

[0071] TIFF2025026922000002.tif11158

[0072] where α is the Seebeck coefficient [V / K], σ is the electrical conductivity [S / m], and α 2 σ is the power factor (PowerFactor, [W / mK 2 ]), and T is the temperature , k is thermal conductivity [W / mK]. k is a·c p ρ, where a is the thermal diffusivity [cm 2 / S], and c p is the specific heat [J / gK] and ρ is the density [g / cm 3 ] .

[0073] To obtain the thermoelectric performance index of the thermoelectric element, a Z meter is used to measure the Z value (V / K). The measured Z value can be used to calculate the thermoelectric figure of merit (ZT).

[0074] According to an embodiment of the present invention, the P-type thermoelectric leg 130 and the N-type thermoelectric leg 140 are shown in FIG. 6(b), the thermoelectric legs 130, 140 may have a structure as shown in FIG. The thermoelectric material layers 132 and 142 are laminated on one surface of the thermoelectric material layers 132 and 142. The layers 134 and 144 are laminated on the other surfaces of the thermoelectric material layers 132 and 142, which are arranged opposite to one surface of the thermoelectric material layers 132 and 142. The second plating layers 134, 144 are formed on the thermoelectric material layers 132, 142 and the first plating layer 134. between the thermoelectric material layers 132, 142 and the second plating layers 134, 144, and between the thermoelectric material layers 132, 142 and the second plating layers 134, 144, respectively. The first bonding layer 136, 146 and the second bonding layer 136, 146 are disposed on the first metal layer 136, 146. The first gold layer is laminated on the plating layers 134, 144 and the second plating layers 134, 144, respectively. The first metal layer 138, 148 and the second metal layer 138, 148.

[0075] Here, the thermoelectric material layers 132 and 142 are made of semiconductor materials, bismuth (Bi) and tellurium (Te). The thermoelectric material layers 132 and 142 may include the P-type thermoelectric It may have the same material or shape as leg 130 or N-type thermoelectric leg 140 .

[0076] The first metal layer 138, 148 and the second metal layer 138, 148 are made of copper (Cu), copper alloy, It may be selected from gold, aluminum (Al) and aluminum alloys, and may be 0.1 to 0.5 mm The first metal layer 138, 14 may have a thickness of preferably 0.2 to 0.3 mm. The thermal expansion coefficients of the thermoelectric material layers 132 and 142 are The number of metal layers 138, 148 and the number of metal layers 140, 142 are similar to or greater than the number of metal layers 140, 142, and ... 138, 148 and the interfaces between the thermoelectric material layers 132, 142 are subjected to compressive stresses, so that In addition, the first metal layers 138, 148 and the second metal layers 140, 142 can be prevented from cracking or peeling. The strong bonding strength between the metal layers 138, 148 and the electrodes 120, 150 allows the thermoelectric legs 130, 1 40 can be stably coupled to the electrodes 120,150.

[0077] Next, the first plating layer 134, 144 and the second plating layer 134, 144 are respectively made of Ni, At least one of Sn, Ti, Fe, Sb, Cr and Mo may be included, and 1 to The first plating layer 134 may have a thickness of 20 μm, preferably 1 to 10 μm. 144 and the second plating layer 134, 144 are semiconductor materials in the thermoelectric material layers 132, 142. Reaction between Bi or Te and the first metal layer 138, 148 and the second metal layer 138, 148 Therefore, not only can the deterioration of the performance of the thermoelectric element be prevented, but also the first metal layers 138 and 148 Furthermore, oxidation of the second metal layers 138 and 148 can be prevented.

[0078] At this time, the thermoelectric material layers 132, 142 and the first plating layers 134, 144 and the thermoelectric material layers Between the first and second plating layers 132 and 142 and the second plating layers 134 and 144, the first bonding layers 136 and 146 and Then, the first adhesive layer 136, 146 and the second adhesive layer 146 may be disposed. The second bonding layers 136 and 146 may include Te. 6 and the second bonding layers 136, 146 are Ni-Te, Sn-Te, Ti-Te, Fe-Te , Sb--Te, Cr--Te, and Mo--Te. According to an embodiment of the present invention, the first bonding layer 136, 146 and the second bonding layer 136, 146 and The thickness of each of the layers may be 0.5 to 100 μm, preferably 1 to 50 μm. In the example, the thermoelectric material layers 132, 142, the first plating layers 134, 144 and the second plating layers a first bonding layer 136, 146 and a second bonding layer 136 containing Te between the layers 134, 144; 146 is arranged in advance, and Te in the thermoelectric material layers 132 and 142 is It is also possible to prevent the diffusion of the metal to the second plating layers 134 and 144. The occurrence of i-rich regions can be prevented.

[0079] On the other hand, the lower substrate 110 and the P-type thermoelectric leg 130 and the N-type thermoelectric leg 140 are disposed The lower electrode 120 is connected to the upper substrate 160, and the P-type thermoelectric leg 130 and the N-type thermoelectric leg 140 are connected to the upper substrate 160. The upper electrode 150 disposed between the electrodes 140 is made of copper (Cu), silver (Ag) and nickel (Nb). i) and having a thickness of 0.01 mm to 0.3 mm. When the thickness of the lower electrode 120 or the upper electrode 150 is less than 0.01 mm, If the thickness exceeds 0.3 mm, the resistance increases and the electrical conductivity decreases. This can reduce the conduction efficiency.

[0080] The lower substrate 110 and the upper substrate 160 facing each other are insulating substrates or metal substrates. The insulating substrate may be an alumina substrate or a flexible polymer resin substrate. Polymer resin substrates with this property include polyimide (PI), polystyrene (PS), and polymethylmethacrylate (PMMA). Poly(ethylene terephthalate) (PMMA), Cyclic olefin copolymer (COC), Poly(ethylene terephthalate) Various types of highly transparent plastics such as PET and resin The metal substrate may contain Cu, Al or a Cu-Al alloy. The thickness of the metal substrate can be 0.1 mm to 0.5 mm. If it is less than 0.5mm or exceeds 0.5mm, the heat dissipation characteristics or thermal conductivity may become excessively high. In addition, since the lower substrate 110 and the upper substrate 160 are made of metal, the reliability of the thermoelectric element may be reduced. In the case of a substrate, the lower substrate 110 and the lower electrode 120 are connected to the upper substrate 160 and the upper electrode 170. A dielectric layer 170 may be further formed between the first and second electrodes 150. The dielectric layer 170 may be 5 to 1 It contains a material with a thermal conductivity of 0.0 W / mK and is formed with a thickness of 0.01 mm to 0.15 mm. If the thickness of the dielectric layer 170 is less than 0.01 mm, the insulation efficiency or voltage resistance characteristic may be reduced. If the thickness exceeds 0.15 mm, the thermal conductivity may decrease, resulting in a decrease in heat dissipation efficiency. .

[0081] In this case, the lower substrate 110 and the upper substrate 160 may be formed to have different sizes. For example, the volume, thickness or area of ​​one of the lower substrate 110 and the upper substrate 160 is smaller than that of the other. The volume, thickness or area of ​​the thermoelectric element can be increased. Heat dissipation performance can be improved.

[0082] In addition, a heat dissipation pattern is formed on at least one surface of the lower substrate 110 and the upper substrate 160. For example, a concave-convex pattern may be formed. This improves the heat dissipation performance of the thermoelectric element. When the concave-convex pattern comes into contact with the P-type thermoelectric leg 130 or the N-type thermoelectric leg 140, When formed on a surface that is in contact with the thermoelectric legs, the bonding properties between the thermoelectric legs and the substrate may also be improved.

[0083] On the other hand, the P-type thermoelectric leg 130 or the N-type thermoelectric leg 140 may have a cylindrical shape, a polygonal prism shape, an elliptical shape, or the like. It may have a cylindrical shape, etc.

[0084] According to one embodiment of the present invention, the P-type thermoelectric leg 130 or the N-type thermoelectric leg 140 is an electrode. The width of the joining portion may be made wider.

[0085] At this time, the lower substrate 110 disposed on the duct 1100 is an aluminum substrate 1212, 312, and the aluminum substrate 1212, 1312 has a first surface 1112 and a second surface 1112. Each of the surfaces 1122 and the thermal interface material The aluminum substrates 1212 and 1312 have excellent heat transfer properties. Since the thermal conductivity is excellent, one of the two surfaces of the thermoelectric elements 1210 and 1310 is connected to a duct through which a cooling fluid flows. Heat transfer between the aluminum substrates 1212 and 1312 and the cooling element 1100 is easy. The duct 1100 through which the cooling fluid flows is made of a thermal interface material. When the material is bonded to the aluminum substrate 1212, 1312 by TIM (Terial, TIM), Heat transfer between the ducts 1100 through which the cooling fluid flows can be unimpeded.

[0086] Referring again to FIGS. 1-5, cooling fluid passes through duct 1100 in a first direction and gas passes through duct 1100 in a second direction. A plurality of electrodes are arranged in a direction perpendicular to the first direction and parallel to the first surface 1112 and the second surface 1122. It can pass between the thermal converters 1000-1, 1000-2, and 1000-3. For this reason, the gas guide members 1400 are arranged one for each duct 1100 or one for each duct 110. A plurality of such nozzles may be arranged at every 100 mm, and may be arranged in the direction in which the hot gas flows in. For example, The third surface 1130 of the pipe 1100 faces the direction in which the hot gas flows in, and the fourth surface 1140 faces When the gas guide member 1400 is arranged so as to face the direction in which the high-temperature gas is discharged, The gas guide member 1400 may be disposed on the third surface 1130 side of the duct 1100. It may also be arranged on the fourth surface 1140 of the duct 1100 according to pneumatic principles.

[0087] At this time, the space between the plurality of heat exchangers 1000-1, 1000-2, and 1000-3 is The temperature of the gas flowing between the plurality of heat exchangers 1000-1, 1000-2, 1000- 3. For example, the temperature of the gas discharged from the space between the heat exchangers 1 The gas flowing into the space between 000-1, 1000-2, and 1000-3 is from a car, It can be, but is not limited to, waste heat generated from engines of ships, etc. For example, the space between the thermal conversion devices 1000-1, 1000-2, and 1000-3 may be The temperature of the gas flowing into the reactor is 100°C or higher, preferably 200°C or higher, and more preferably 22 The temperature may be 0°C to 250°C, but is not limited thereto. The width of the space between the positions 1000-1, 1000-2, and 1000-3 is within a few millimeters. The size of the heat conversion device, the temperature of the inflowing gas, the inflow rate of the gas, the required amount of electricity, etc. Here, the number of thermal conversion devices 1000-1, 1000-2, 1000 The space between the first and second thermoelectric modules 1300 and 1301 is for radiating the second thermoelectric module 1300 of one of the thermal conversion devices 1000. The heat fin 1320 is adjacent to the heat dissipation fin of the first thermoelectric module 1200 of the thermal exchange device 1000. For example, referring to FIG. 4, a plurality of heat exchange devices 10 The space (a) between 00-1, 1000-2, and 1000-3 is preferably 10 mm or less. The thickness of the heat exchanger 1000 may be 5 mm or less, and more preferably 3 mm or less. The heat dissipation fins 1320 of the second thermoelectric module 1300 and the first heat exchanger 1000 adjacent thereto The heat dissipation fins 1220 of one thermoelectric module 1200 may be in contact with each other, but However, there may be a tolerance in the space where the heat sink fins 1220 and 1320 are arranged. The distance between the plurality of heat exchangers 1000-1, 1000-2, and 1000-3 is smaller than the pressure. The hydraulic pressure in the space (a) may be low, and as a result, the heat exchange devices 1000-1, 1 The gas flowing between 000-2 and 1000-3 is smaller than that between fins 1220 and 1320. (a) Separate spaces between multiple heat exchange devices 1000-1, 1000-2, 1000-3 The heat exchanger 1000-1, 1000-2, 100 A vortex may occur in the space (a) between the heat exchangers 10-3. The space (a) between 000-1, 1000-2, and 1000-3 exceeds 10 mm In this case, the efficiency of heat exchange between the incoming gas and the heat dissipation fins 1220 and 1320 may be reduced. In addition, the space between the plurality of heat exchangers 1000-1, 1000-2, and 1000-3 is The larger (a) is, the smaller the number of heat exchange devices that can be installed in a given space can be. Accordingly, the distance between the plurality of heat exchangers 1000-1, 1000-2, and 1000-3 is The space (a) is 10 mm or less, preferably 5 mm or less, and more preferably 3 mm or less. could be.

[0088] The gas guide member 1400 is included in the third surface 1130 of the duct 1100 and is directed toward the outside of the duct. On the third surface 1132, the center between both ends of the third surface 1132 and both ends of the third surface 1132 The distance between the third surface 1132 and the surface 1133 increases as the surface 1133 approaches the surface 1133. The body guide member 1400 may have an umbrella or roof shape. The heat, for example, waste heat, is diverted through the gas guide member 1400 to a plurality of heat conversion devices 1000. It can be guided to pass through the space between -1, 1000-2, and 1000-3. At this time, the inclination angle θ of the gas guide member 1400 is 10 to 80°, preferably 20 to 70°, More preferably, the angle is 30 to 65°, and even more preferably, the angle is 45 to 60°. If the inclination angle θ of the gas guide member 1400 is outside this range, for example, If the inclination angle θ of 0 exceeds the upper limit of this numerical range, the inflowing gas will After flowing along the material 1400, it leaves the area where the heat dissipation fins 1220 and 1320 are arranged. (a) Separate spaces between multiple heat exchange devices 1000-1, 1000-2, 1000-3 In addition, the gas may flow in a direction opposite to the inclination angle θ of the gas guide member 1400. If the numerical value falls outside this range, for example, the inclination angle θ of the gas guide member 1400 is If the numerical value is below the lower limit of the range, it may be difficult to manufacture the gas guide member 1400. The height of the heat exchanger is too high, and the heat of the gas is lost through the gas guide member 1400. Therefore, the heat exchange efficiency may be reduced.

[0089] At this time, the gas guide member 1400 is formed as a pair of thermoelectric modules 1200 and 1300. A plurality of pairs of thermoelectric modules 1100 may be arranged in series on one duct 1100. It may be formed in units of 200 or 1300.

[0090] Meanwhile, in one thermal conversion device 1000, the first heat dissipation fin 12 of the first thermoelectric module 1200 20 and the outside of the second heat dissipation fin 1320 of the second thermoelectric module 1300 may be greater than the width W2 of the gas guide member 1400. The width W3 between the outside of the second thermoelectric element 1310 and the outside of the second thermoelectric element 1310 is equal to or greater than the width of the gas guide member 1400. Here, the outer side of the first heat dissipation fin 1220 and the outer side of the second heat dissipation fin 1320 may be Each of them may mean the opposite side facing the duct 1100. Similarly, the first thermoelectric element 1 The outside of the second thermoelectric element 1310 and the outside of the second thermoelectric element 1310 are opposite to the side facing the duct 1100. Here, the first heat dissipation fin 1220 and the second heat dissipation fin 1320 are gas For example, the first heat dissipation fin 1220 and the second heat dissipation fin 1221 may be formed in a direction that does not obstruct the flow. The fins 1320 may have a plate shape extending along the second direction in which the gas flows. Alternatively, the first heat dissipation fin 1220 and the second heat dissipation fin 1320 are arranged in a second direction in which the gas flows. The shape may be folded so that a flow path is formed along the At this time, the first heat dissipation fin 1220 of the first thermoelectric module 1200 and the second thermoelectric module 130 The maximum width W1 between the second heat dissipation fins 1320 is the width W1 of the first heat dissipation fin 1320 with respect to the duct 1100. The distance from the farthest point of the fin 1220 to the farthest point of the second heat dissipation fin 1320 is The maximum width W2 of the gas guide member 1400 may be defined as the third surface 1132 of the duct 1100. This may refer to the width of the gas guide member 1400 at its closest region. The flow of the inflowing gas is not obstructed by the gas guide member 1400, and the first heat dissipation fin 1 220 and the second heat dissipation fin 1320. Accordingly, the gas and the first heat dissipation The contact area between the fin 1220 and the second heat dissipation fin 1320 is increased, The amount of heat that the first heat dissipation fin 1220 and the second heat dissipation fin 1320 receive from the gas increases, and the power generation efficiency increases. It could be.

[0091] At this time, the vertical distance d between the gas guide member 1400 and the heat dissipation fins 1220 and 1320 is 10 mm or more, preferably 15 mm or more, and more preferably 17 mm or more. According to the present invention, the gas guide member 1400, the duct 1100, the first thermoelectric module 1200, and A space for fastening the second thermoelectric module 1300 may be secured, and the gas guide member 1400 may be secured. The gas branched by the fins 1220 and 1320 passes through the first and second heat dissipation fins 1220 and 1320. In particular, the gas guide member 1400 and the heat dissipation fins 1220, 1 As the vertical distance d between the gas guide members 1400 and 320 increases, the gas The heat can efficiently pass through the first heat dissipation fin 1220 and the second heat dissipation fin 1320 without flow resistance. However, between the gas guide member 1400 and the heat dissipation fins 1220 and 1320 If the vertical distance d becomes too long, the height of the heat exchanger becomes too high, resulting in a limited The number of heat exchange devices that can be arranged in the space can be reduced, and the heat exchange devices can be distributed through the gas guide member 1400. The heat of the branched gas can be cooled before passing through the heat dissipation fins 1220 and 1320, so that the heat exchange As a result, the efficiency of the gas guide member 1400 and the heat dissipation fins 1220 and 13 The vertical distance d between the 20 is 200 mm or less, preferably 150 mm or less, and more preferably 1 00mm or less.

[0092] On the other hand, the first thermoelectric module 1200, the duct 1100 and the second thermoelectric module 1300 In order to improve the sealing and insulation effect between the third surface 1132 of the duct 1100 and the air Between the body guide members 1400, a heat insulating member 1700 and a shield member 1800 are further arranged. It can be placed.

[0093] The insulating member 1700 includes a first insulating surface 1710 disposed on the third surface 1132, a first insulating surface 1712 disposed on the third surface 1132, and a second insulating surface 1713 disposed on the third surface 1132. 10 in a direction parallel to the first surface 1112 and A second insulating surface 1720 and a second insulating surface 1710 are disposed on a portion of the element 1200. A portion of the second surface 1122 or the second thermoelectric element 1300 extends in a direction parallel to the surface 1122. The third insulating surface 1730 may be disposed on a portion of the first thermoelectric element 12. A part of the first thermoelectric element 1200 and a part of the second thermoelectric element 1300 are the first thermoelectric element 1200 and the second thermoelectric element 1300, respectively. 2 may refer to the lower substrate of the thermoelectric element 1300, which may be an aluminum plate. .

[0094] The shield member 1800 has a first shield surface 181 disposed on the first heat insulating surface 1710. 0, a second heat insulating surface 17 extending from the first shield surface 1810 in a direction parallel to the first surface 1112 20 and the second shield surface 1820 and the first shield surface 181 0 in a direction parallel to the second surface 1122 and disposed on at least a portion of the third insulating surface 1730. The shield may include a third shield surface 1830 disposed on the first shield surface.

[0095] In particular, the second shield surface 1820 and the third shield surface 1830 are connected to the first thermoelectric element 1. 210 and the first heat dissipation fin 1220 and the boundary between the second thermoelectric element 1310 and the second heat dissipation fin 1320。 1320 may be placed on the boundary.

[0096] According to this, high-temperature gas passing between the plurality of thermal conversion devices 1000 is converted into a first thermoelectric module. The heat dissipation fins 1220 and 1320 of the first thermoelectric module 1200 and the second thermoelectric module 1300 are passed through the The first thermoelectric module 1200 and the second thermoelectric module 1300 only This can prevent the problem of direct contact with the thermoelectric elements 1210 and 1310 that are to be inserted, and the gas guide The side surface of the first thermoelectric module 1200, the third surface 1130 and the second thermoelectric module 1200 are Since the sides of the module 1300 can be insulated from each other, the problem of a decrease in thermoelectric conversion performance can be prevented. It is possible.

[0097] On the other hand, the gas guide member 1400, the first shield surface 1810, the first heat insulating surface 1710 and the da The third surfaces 1132 of the connectors 1100 may be fastened together, thereby forming a gas guide member 140. An air layer may be formed between the first shield surface 1810 and the second shield surface 1810. The insulation performance can be further improved by an air layer between the first shield surface 1810 and the second shield surface 1810. do.

[0098] Alternatively, in order to further improve the heat insulating performance, the first heat insulating surface 1710 and the first shield surface 1810 may be An additional insulating member 1740 may further be placed therebetween.

[0099] Alternatively, although not shown, one surface of the gas guide member 1400 may extend to have a hollow triangular shape. 18. The first shield surface 1810 may be formed to be bonded to the first shield surface 1810. .

[0100] Meanwhile, according to the embodiment of the present invention, the height and shape of the gas guide member 1400 may be variously changed. It can be done.

[0101] FIG. 8 is a partial perspective view of a heat exchanger according to an embodiment of the present invention, and FIG. 9 is a partial perspective view of a heat exchanger according to an embodiment of the present invention. 4 shows various modified examples regarding the height and shape of the gas guide member according to the present invention.

[0102] 9(a) and 9(b), the height of the gas guide member 1400 is related to the gas flow rate. For example, the flow rate of the gas passing between the multiple heat exchange devices 1000 is high. As shown in FIG. 9(a), it is advantageous for the gas guide member 1400 to be taller. As shown in FIG. 9(b), the lower the flow rate, the lower the height of the gas guide member 1400. may be advantageous.

[0103] Alternatively, as shown in FIG. 9(c) and FIG. 9(d), the gas guide member 1400 may have a curved surface. For example, as shown in FIG. 9(c), the gas guide member 1400 has a gradually increasing inclination from the center to the edge. The gas guide member 1400 may have a dome shape with a high inclination, or as shown in FIG. 9(d), The shape may have a gentler slope from the center to the edge.

[0104] In this way, the height and shape of the gas guide member 1400 can be adjusted to better suit the flow rate and flow velocity of the gas. As described above, the gas guide member 1400 may be modified as desired. The shielding member 1800, the heat insulating member 1700 and the duct 110 are connected through the formed holes. When fastened with a screw, the gas guide part is suitable for the gas flow rate and flow speed. It is possible to replace the material 1400 .

[0105] On the other hand, in the above, the fluid inlet and the fluid outlet of the duct 1100 of the heat exchanger 1000 are Although the flanges 1500 and 1600 are formed on the respective parts, there is no restriction thereto. It is not limited to:

[0106] FIG. 10 is a perspective view of a heat exchanger according to another embodiment of the present invention, and FIGS. 11 to 14 are views of FIG. FIG. 1 is a perspective view of a heat exchange system including the heat exchange device of FIG. Duplicate explanations will be omitted.

[0107] Referring to FIG. 10, a heat exchanger 1000 is disposed at one end of a duct 1100 to provide a cooling flow. A fluid inlet 1900 into which the body flows and a cooling fluid are arranged at the other end of the duct 1100. The fluid may further include a fluid outlet 1950. At least one fluid inlet pipe 1902 is connected to 1900, and at least one fluid outlet pipe 1950 is connected to At least one fluid exhaust conduit 1952 may be connected.

[0108] Meanwhile, referring to FIG. 11 to FIG. 13, a first heat exchanger 1000-1 and a second heat exchanger 1000-2 may be supported by the frame 3000. At this time, the frame 3000 is Openings 3100, 3102 are formed on either side in the second direction for the body to pass through, and a cooling fluid is Openings 3200 and 3202 may be formed on both sides in the first direction so that the heat exchanger 3200 can pass through. The fluid inlet pipe 1902 of the exchange device 1000 passes through the opening 3200, and the fluid outlet pipe 1952 passes through the opening 3200. The mouth 3202 can be penetrated.

[0109] Meanwhile, referring to FIG. 11, the thermal conversion system 10 according to the embodiment of the present invention includes a frame 30. 1000-1 and the gas of the first heat exchanger 1000-1 and the second heat exchanger 1000-2 are a first inclined member 2000 arranged to incline to one side of the guide member 1400; The first heat exchange device 1000-1 and the second heat exchange device 1000-2 are connected to the other wall surface of the frame 3000. The second inclination member 21 is disposed so as to incline to the other side of the gas guide member 1400 of 0-2. It may further include 00.

[0110] At this time, one wall surface of the frame 3000 is a wall surface in which the opening 3200 is formed. The other wall surface of the frame 3000 may be a wall surface in which an opening 3202 is formed, and one wall surface of the frame 3000, First inclination member 2000, gas guide member 1400, second inclination member 2100 and frame The other wall surfaces of 3000 may be arranged sequentially along the first direction.

[0111] The first inclination member 2000 and the second inclination member 2100 cause the inside of the thermal conversion system 10 to The high-temperature gas flowing into the thermoelectric module 1200 and the thermoelectric module 1300 is directed toward the area where the thermoelectric module 1200 and the thermoelectric module 1300 are arranged. As a result, the power generation efficiency can be improved. The first inclined member 2000 and the second inclined member 2100 may each be referred to as a guide portion.

[0112] In particular, in an embodiment where the heat exchanger 1000 includes a fluid inlet 1900 and a fluid outlet 1950. The first inclined member 2000 is connected to one wall surface of the frame 3000 and the duct 1100 and the fluid inlet portion. 1900, and the second inclined member 2100 extends from the other wall surface of the frame 3000. If the flow of hot gas flows from the duct 1100 toward the boundary between the duct 1100 and the fluid outlet 1950, Since it is possible to block the flow to the body inlet 1900 and the fluid outlet 1950, The power generation efficiency can be maximized. That is, the first inclination member 2000, the gas guide member The first inclination member 1400 and the second inclination member 2100 are arranged so as not to overlap each other in the first direction, The inclined surface of the first inclined member 2000, the inclination of the gas guide member 1400 and the inclination of the second inclined member 2100 The ramps may be arranged so as not to overlap one another in the second direction.

[0113] At this time, the inclined surface of the gas guide member 1400 is in contact with the first inclined member 2000 and the second inclined member 2000. Each of the 100 inclined surfaces may be inclined in a different direction. For example, the first direction in which the first fluid flows may be inclined in a different direction. and a third direction perpendicular to the second direction in which the second fluid flows, i.e., a plurality of heat exchange devices are arranged. The first inclination member 2000 and the second inclination member 2001 are inclined with respect to a virtual plane formed by the direction in which the inclination is made and the first direction. 100 Each inclined surface is arranged to be inclined with respect to a virtual line extending in a first direction, and The inclined surface of the guide member 1400 may be disposed so as to be inclined with respect to an imaginary line extending in the third direction. Accordingly, the inclined surfaces of the first inclination member 2000 and the second inclination member 2100 are The inclined surface of the gas guide member 1400 is inclined so that the second fluid flows along the second direction. It may be tilted to diverge and flow along a second direction.

[0114] 12, the thermal conversion system 10 according to the embodiment of the present invention includes a frame 30. 100-1 toward one side of the gas guide member 1400 of the first heat exchanger 1000-1. The third inclination member 2200 is disposed so as to be inclined toward the other wall surface of the frame 3000. 1000-2 toward the other side of the gas guide member 1400 of the second heat exchanger 1000-2. The tilt angle may further include a fourth tilt member 2300 disposed on the first tilt angle portion 2302 .

[0115] At this time, one wall surface of the frame 3000 is spaced apart from the first heat exchanger 1000-1 by a predetermined gap. The surface may be arranged parallel to the thermoelectric module of the first thermal conversion device 1000-1. The other wall surface of the frame 3000 faces one wall surface of the frame 3000, and the second heat exchanger 1000 -2 and in parallel with the thermoelectric module of the second thermal conversion device 1000-2 at a predetermined distance. That is, one wall surface and the other wall surface of the frame 3000 may be arranged as shown in FIG. A wall disposed between the wall surfaces on which the first inclination member 2000 and the second inclination member 2100 are disposed. Accordingly, one wall surface of the frame 3000, the third inclined member 2200, the first heat The gas guide member 1400 of the first heat exchanger 1000-1 and the gas guide member 1400 of the second heat exchanger 1000-2 The side member 1400, the fourth inclined member 2300 and the other wall surface of the frame 3000 are in the first direction. The first and second directions may be arranged sequentially along a direction perpendicular to the first direction.

[0116] The third inclination member 2200 and the fourth inclination member 2300 allow the inside of the thermal conversion system 10 to be The high-temperature gas flowing into the thermoelectric module 1200 and the thermoelectric module 1300 is directed toward the area where the thermoelectric module 1200 and the thermoelectric module 1300 are arranged. As a result, the power generation efficiency can be improved. The first inclined member 2200 and the fourth inclined member 2300 may each be referred to as a guide portion.

[0117] 13, the thermal conversion system 10 according to the embodiment of the present invention includes a frame 30. The first inclination member 2000, the second inclination member 2100, and the third inclination member 2200 are disposed on the four walls of the It may include a first angled member 2200 and a fourth angled member 2300 .

[0118] In FIG. 11 to FIG. 13, a first inclination member 2000, a second inclination member 2100, and a third inclination member 2200 And the fourth inclined member 2300 is shown as being coupled to the inner wall surface of the frame 3000. However, the present invention is not limited to this. The first inclination member 2000 and the second inclination member 21 At least one of the first inclination member 2200, the second inclination member 2200 and the fourth inclination member 2300 is a frame. The coupling may be via the outer wall surface of the frame 3000.

[0119] 11 to 13 show a heat conversion system including two heat conversion devices. It is to be understood that the present invention is not limited to the above embodiment and may include more than two heat exchangers, as shown in FIG. According to this, the first inclination member 2000 and the second inclination member 2100 have n heat exchangers. Long along the direction in which the device is arranged, i.e., the third direction perpendicular to the first and second directions It may be extended.

[0120] Although the present invention has been described above with reference to preferred embodiments, it will be apparent to those skilled in the art that without departing from the spirit and scope of the present invention as set forth in the following claims. It will be understood that the invention is susceptible to numerous modifications and variations.

Claims

1. a case including a through hole extending along a first direction and forming an inner surface; a first fluid is disposed in the through hole of the case and flows along a second direction perpendicular to the first direction; a duct having a flow path formed therein for the flow of A first thermoelectric element disposed on a first surface of the duct and a second thermoelectric element disposed on the first thermoelectric element. a first thermoelectric module including a fin; a second thermoelectric element disposed on a second surface of the duct opposite to the first surface; a second thermoelectric module including a second fin disposed on the element; a plurality of first guide parts coupled to the case and disposed opposite each other on the duct; A second guide disposed on a third surface formed between the first surface and the second surface of the duct. Including the do section, the second guide portion extends along the second direction between the first guide portions, Each of the first guide portions and the second guide portion includes an inclined surface, The inclination angle of the inclined surface of the second guide portion is equal to the inclination angle of each of the inclined surfaces of the plurality of first guide portions. A power generating device that is different from the above.

2. The power generating device according to claim 1 , wherein the inclined surface of the second guide portion is disposed along the second direction. Place.

3. The inclined surface of the first guide portion is configured to incline the second fluid in the first direction so that the second fluid flows along the first direction. inclined with respect to the first direction or the second direction, The inclined surface of the second guide portion is configured to allow the second fluid to flow in a branched manner along the first direction. The power generating device according to claim 2 , wherein the first direction is inclined toward the first direction.

4. The power generating device of claim 3 , wherein the second fluid has a higher temperature than the first fluid.

5. The duct is connected to the inner surface of the through hole of the case and has a plurality of opposed members. a plurality of support parts; and a body part disposed between the plurality of support parts, The first guide portions are disposed on the support portions of the duct, The power generating device according to claim 1 , wherein the second guide portion is disposed on a body portion of the duct.

6. The first guide portion and the second guide portion do not overlap each other in the first direction. On-board power generation equipment.

7. The length of each of the plurality of support portions of the duct in the first direction is equal to or smaller than the length of the body portion of the duct in the first direction. Greater than the length The length of each of the plurality of support portions of the duct in the second direction is equal to or longer than the length of the body portion of the duct in the first direction. The generator of claim 5 , wherein the length is less than the length of the first electrode.

8. Each of the first guide parts includes a coupling part coupled to an inner surface of the through hole, 8. The method according to claim 7, wherein the further away from the coupling portion along the second direction, the closer to the duct the coupling portion is. On-board power generation equipment.

9. The inclined surfaces of the first guide portions and the second guide portion do not overlap with each other in the second direction. The power generating device according to claim 8 .

10. Each of the first guide portions includes a first end portion closest to the duct, The power generating device according to claim 9 , wherein the second guide portion includes an end portion in the second direction.

11. the support portion of the duct includes a side surface facing the second guide portion, a plurality of first ends of the plurality of first guide portions are disposed on a support portion of the duct; The power generating device of claim 10 , wherein the first ends are adjacent the side surfaces.

12. 2. The method of claim 1, wherein the first fin and the second fin each extend in the first direction. Power generation equipment.

13. The first fin and the second fin are each spaced apart from the second guide portion by a predetermined distance in the first direction. The power generating device of claim 12 , wherein the power generating device is spaced apart.

14. The duct includes a plurality of ducts spaced apart from one another; Each of the plurality of ducts includes a first surface and a second surface opposed to each other; The first thermoelectric module includes a plurality of one-sided thermoelectric modules disposed on the first surface. The second thermoelectric module includes a plurality of other-side thermoelectric modules disposed on the second surface. The power generating device according to claim 13 .

15. The plurality of one-side thermoelectric modules include a plurality of first portions facing an inner surface of the through hole, and and a plurality of second portions facing the second thermoelectric module; The plurality of other-side thermoelectric modules include a plurality of third portions facing the inner surface of the through hole, and and a plurality of fourth portions facing the first thermoelectric module. Device.

16. The second portion of the one side thermoelectric module is spaced a predetermined distance from the fourth portion of the other side thermoelectric module. The power generating device according to claim 15.

17. The first thermoelectric module and the second thermoelectric module are each coupled to the duct. The power generating device of claim 12 including a plurality of first fastening portions.

18. The first fastening portions are spaced apart from one another along the second direction. The power generating device described

19. the second guide portion includes a plurality of grooves, The power generating device according to claim 1 , wherein the grooves are spaced apart from one another along the second direction. Device.

20. a plurality of second fastening portions disposed in the plurality of grooves of the second guide portion, the first fastening portions face a first surface and a second surface of the duct; the second plurality of fastening portions face a third surface of the duct; 20. The power generation device of claim 19, wherein the first surface and the second surface are perpendicular to the third surface. Device.

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