A special-shaped heat sink for thermoelectric power generation

Abstract

The utility model provides a special-shaped heat dissipation ware for thermoelectricity generation, including shell and hot column, the shell includes main body, backboard and base, is equipped with cylinder groove to main body, is equipped with ring groove to base, is equipped with wafer groove to backboard, and thermoelectric module is installed in wafer groove, and hot column includes tube body and bottom plate, and tube body is inserted in cylinder groove, and bottom plate is installed in ring groove, and tube body top surface is flush with main body top surface, and tube body bottom is connected with bottom plate top surface, and bottom plate bottom surface is flush with base bottom surface, and bottom plate absorbs heat from heat source and conduction heat through tube body to thermoelectric module, thereby utilizes temperature difference and carries out power generation. The utility model discloses through fixed plate connection shell and heat source, can allow quick dismounting and maintenance, improves the stability of heat source and hot column and carries out heat transfer, the surface high accuracy of shell and hot column bottom can guarantee the close contact of base and heat source, reduces the interface heat loss, and the surface high accuracy of wafer groove can guarantee that thermoelectric module and groove bottom are fully contacted, avoids the uneven heat transfer caused by local suspension.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, and in particular to a radiator for irregularly shaped thermoelectric power generation. Background Technology

[0002] In recent years, with the widespread application of thermoelectric power generation technology in the field of waste heat recovery, the design of related heat dissipation structures has gradually become a research hotspot.

[0003] Our company previously disclosed a thermoelectric generator for use in a heating device, as disclosed in publication number CN222262514U. The thermoelectric generator includes a heat dissipation device and a thermoelectric power generation device. The heat dissipation device includes a heat dissipation fin unit, a cooling fan, and a heat-conducting part inserted into the heat dissipation fin unit. The thermoelectric power generation device includes a heat-conducting head, a fixing plate disposed on the heat-conducting head, and a thermoelectric power generation plate embedded in the fixing plate. The thermoelectric power generation plate is sandwiched between the heat-conducting part and the heat-conducting head. One end face of the thermoelectric power generation plate abuts against the heat-conducting base, and the other end face abuts against the heat-conducting head. Heat is transferred to one side of the thermoelectric power generation plate through the heat-conducting head, and the other side of the thermoelectric power generation plate is cooled by the heat-conducting base in the heat dissipation fin unit. The cooling fan actively cools the heat dissipation fin unit, creating a temperature difference between the two sides of the thermoelectric power generation plate, thereby continuously utilizing the thermoelectric power generation plate to generate electricity and improving energy efficiency.

[0004] In the above solution, the device presses the heat-conducting head onto the heat source and conducts heat through the heat-conducting head. However, the flatness and roughness of the bottom of the heat-conducting head are not limited, which will affect the heat conduction efficiency. The device does not have limiting devices or connecting devices on the sides and bottom, resulting in insufficient stability during long-term use. In addition, there is insufficient protection for the heat-conducting pipe, the main component for heat transmission. Therefore, it is necessary to provide a radiator for irregularly shaped thermoelectric power generation to solve the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a heat sink for irregularly shaped thermoelectric power generation.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A heat sink for thermoelectric power generation with irregular shape includes a shell and a heat column. The heat column is connected to the shell. The shell includes a main body, a back plate, and a base. The main body has a cylindrical groove, the base has an annular groove, and the back plate has a wafer groove. A thermoelectric module is installed in the wafer groove. The heat column includes a tube body and a base plate. The tube body is inserted into the cylindrical groove, and the base plate is installed in the annular groove. The top surface of the tube body is flush with the top surface of the main body, and the bottom surface of the tube body is connected to the top surface of the base plate. The bottom surface of the base plate is flush with the bottom surface of the base. The base plate absorbs heat from the heat source and conducts the heat to the thermoelectric module through the tube body, thereby generating electricity using the temperature difference.

[0008] The present invention is further configured such that the main body has a mounting hole on the front side, the fixing plate has symmetrical connecting holes and fixing holes, the bolts pass through the connecting holes and mounting holes in sequence to connect the fixing plate to the front side of the main body, and the bolts pass through the fixing holes to install the fixing plate on the heat source.

[0009] The present invention is further configured such that the bottom of the outer shell is sintered with the base, and the flatness requirement of the bottom surface of the outer shell and the bottom surface of the base is 0.04mm, and the roughness requirement is 0.4μm.

[0010] The present invention is further configured such that a rectangular groove is located in the middle of the wafer slot, and semi-circular grooves are symmetrically connected to both sides of the rectangular groove.

[0011] The present invention is further configured such that the wafer slot has a chamfer one, and the outer shell surface has a chamfer two.

[0012] The present invention is further configured such that the wafer groove flatness requirement is 0.04 mm and the roughness requirement is 0.4 μm.

[0013] The present invention is further configured such that the main body, the back plate and the base are integrally formed, the main body and the back plate are connected by rounded corners, and the main body and the base are connected by rounded corners.

[0014] The present invention is further configured such that the bottom of the base is provided with a rounded corner one, and the top of the back plate is provided with a rounded corner two.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. This utility model connects the outer shell and the heat source through a fixing plate, which allows for quick disassembly and maintenance. It is suitable for scenarios where equipment needs to be frequently replaced or upgraded, and improves the stability of heat transfer between the heat source and the heat column.

[0017] 2. The high precision of the outer shell and the bottom surface of the hot column of this utility model can ensure close contact between the base and the heat source, reduce interfacial heat loss, and maintain the high temperature gradient required for thermoelectric power generation. At the same time, the high precision of the wafer groove surface can ensure full contact between the thermoelectric module and the bottom of the groove, avoid uneven heat transfer caused by local suspension, and reduce micro air gaps to improve interfacial heat conduction efficiency.

[0018] 3. This utility model uses an integrally molded shell to wrap the hot column and connects them through a sintering process, which can prevent the hot column from shifting and causing physical damage. The chamfering and high-precision processing reduce the risk of damage during installation. The heat conduction synergy between the hot column and the shell optimizes the heat conduction path and can avoid overheating of the hot column or thermal stress concentration. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0021] Figure 3 This is the front view of this utility model.

[0022] Figure 4 This is a rear view of the present invention.

[0023] Figure 5 This is a side view of the present invention.

[0024] Figure 6 This is a top view of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the outer shell of this utility model. Figure 1 .

[0026] Figure 8 This is a schematic diagram of the structure of the outer shell of this utility model. Figure 2 .

[0027] Figure 9 This is a schematic diagram of the structure of the heat column of this utility model.

[0028] In the diagram, 1. Outer shell, 11. Main body, 111. Cylindrical groove, 112. Mounting hole, 12. Back plate, 121. Wafer slot, 13. Base, 131. Ring groove, 2. Heat column, 21. Tube body, 22. Base plate, 3. Fixing plate, 31. Connecting hole, 32. Fixing hole, 4. Chamfer 1, 5. Chamfer 2, 6. Round corner 1, 7. Round corner 2. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] Example 1:

[0031] In this embodiment, as Figure 1-2 As shown, the present invention proposes a heat sink for thermoelectric power generation with irregular shape, including a shell 1 and a heat column 2. The heat column is connected to the shell. The shell includes a main body 11, a back plate 12 and a base 13. The main body is provided with a cylindrical groove 111, the base is provided with an annular groove 131, and the back plate is provided with a wafer groove 121. The thermoelectric module is installed in the wafer groove. The heat column includes a tube body 21 and a base plate 22. The tube body is inserted into the cylindrical groove, and the base plate is installed in the annular groove. The top surface of the tube body is flush with the top surface of the main body, and the bottom surface of the tube body is connected to the top surface of the base plate. The bottom surface of the base plate is flush with the bottom surface of the base. The base plate absorbs heat from the heat source and conducts the heat to the thermoelectric module through the tube body, thereby generating electricity using the temperature difference.

[0032] In this embodiment, the main body is further configured to have a mounting hole 112 on the front side, and the fixing plate 3 is symmetrically provided with a connecting hole 31 and a fixing hole 32. Bolts pass through the connecting hole and the mounting hole in sequence to connect the fixing plate to the front side of the main body, and bolts pass through the fixing hole to install the fixing plate on the heat source.

[0033] In this example, the housing and heat source are connected by a mounting plate, which allows for quick disassembly and maintenance. This is suitable for scenarios where equipment needs to be frequently replaced or upgraded, and improves the stability of heat transfer between the heat source and the heat column.

[0034] In this embodiment, the bottom of the outer shell is sintered with the base. The sintering process can eliminate the interface gap and reduce the contact thermal resistance. The flatness requirement of the bottom surface of the outer shell and the bottom surface of the base is 0.04mm, and the roughness requirement is 0.4μm. The high surface precision can ensure the close contact between the base and the heat source, reduce the interface heat loss, and maintain the high temperature gradient required for thermoelectric power generation.

[0035] In this embodiment, the wafer slot is further configured such that a rectangular slot is located in the middle, and semi-circular slots are symmetrically connected to both sides of the rectangular slot, with the semi-circular slots having a parameter of R2.5mm.

[0036] In this example, the rectangular and semi-circular slots can match the shape of the thermoelectric module, providing precise positioning and avoiding installation misalignment. At the same time, the semi-circular slots can provide routing space for wires or solder joints, avoiding module warping or poor contact caused by wiring interference. They can also allow the thermoelectric module to deform slightly during thermal expansion, reducing the risk of shear damage to the module-wafer slot interface caused by thermal stress.

[0037] In this embodiment, the wafer slot is further provided with chamfer 4 and the outer shell surface is provided with chamfer 5.

[0038] In this example, the parameters for both chamfer one and chamfer two are C0.3mm. Chamfer one facilitates the insertion of the thermoelectric module and prevents sharp edges from scratching the module surface or wires. Chamfer two can prevent scratches to operators or equipment during installation, while improving the product's appearance quality.

[0039] In this embodiment, the wafer trench flatness requirement is 0.04 mm and the roughness requirement is 0.4 μm. The high surface precision can ensure that the thermoelectric module is in full contact with the bottom of the trench, avoid uneven heat transfer caused by local suspension, and at the same time reduce micro air gaps and improve the interface heat conduction efficiency.

[0040] In this embodiment, the main body, back plate, and base are further configured to be integrally formed. Integral forming can improve the structural strength of the shell, optimize the heat flow path, and reduce costs. The main body and back plate are connected with rounded corners, and the main body and base are connected with rounded corners.

[0041] In this embodiment, the base is further configured to have a rounded corner 6 at the bottom and a rounded corner 7 at the top of the back plate.

[0042] In this example, both fillet one and fillet two have a parameter of R5mm. Fillet one can disperse the stress concentration in the heat source contact area and prevent fatigue cracks caused by uneven thermal expansion of the base. Fillet two can guide the heat dissipation airflow to transition smoothly, reduce turbulence, and improve the efficiency of forced convection heat dissipation. At the same time, the fillet can avoid scratching operators or equipment and improve the appearance quality of the product.

[0043] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A radiator for irregularly shaped thermoelectric power generation, characterized in that, The device includes an outer shell and a heating column, which are connected to the outer shell. The outer shell includes a main body, a back plate, and a base. The main body has a cylindrical groove, the base has an annular groove, and the back plate has a wafer groove. The thermoelectric module is installed in the wafer groove. The heating column includes a tube body and a base plate. The tube body is inserted into the cylindrical groove, and the base plate is installed in the annular groove. The top surface of the tube body is flush with the top surface of the main body, and the bottom surface of the tube body is connected to the top surface of the base plate. The bottom surface of the base plate is flush with the bottom surface of the base. The base plate absorbs heat from the heat source and conducts the heat to the thermoelectric module through the tube body, thereby generating electricity using the temperature difference.

2. The irregularly shaped thermoelectric radiator for power generation according to claim 1, characterized in that, The main body has mounting holes on the front, and the fixing plate has symmetrical connecting holes and fixing holes. Bolts pass through the connecting holes and mounting holes in sequence to connect the fixing plate to the front of the main body, and bolts pass through the fixing holes to install the fixing plate on the heat source.

3. The irregularly shaped thermoelectric radiator for power generation according to claim 1, characterized in that, The bottom of the outer shell is sintered with the base. The flatness requirement of the bottom surface of the outer shell and the bottom surface of the base is 0.04mm, and the roughness requirement is 0.4μm.

4. The irregularly shaped thermoelectric radiator for power generation according to claim 1, characterized in that, The wafer has a rectangular groove in the middle, with semi-circular grooves symmetrically connected to both sides of the rectangular groove.

5. A radiator for irregularly shaped thermoelectric power generation according to claim 1, characterized in that, The wafer slot has a chamfer one, and the outer casing surface has a chamfer two.

6. A radiator for irregularly shaped thermoelectric power generation according to claim 1, characterized in that, The wafer groove flatness requirement is 0.04 mm, and the roughness requirement is 0.4 μm.

7. A radiator for irregularly shaped thermoelectric power generation according to claim 1, characterized in that, The main body, back panel, and base are molded as one piece, with rounded corners connecting the main body and back panel, and rounded corners connecting the main body and base.

8. A radiator for irregularly shaped thermoelectric power generation according to claim 1, characterized in that, The base has a rounded corner at the bottom and a rounded corner at the top of the back panel.

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