CN109682245B - Thermoelectric power generation device based on fluid heat exchange - Google Patents

Thermoelectric power generation device based on fluid heat exchange Download PDF

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CN109682245B
CN109682245B CN201811590292.3A CN201811590292A CN109682245B CN 109682245 B CN109682245 B CN 109682245B CN 201811590292 A CN201811590292 A CN 201811590292A CN 109682245 B CN109682245 B CN 109682245B
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side fluid
hot
cold
fluid cavity
generation chip
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CN109682245A (en
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谢果
昂然
孙立成
吴章林
郭旭明
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Sichuan University
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Sichuan University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/02—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by influencing fluid boundary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/04—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of rubber; of plastics material; of varnish
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—Generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

The invention discloses a temperature difference power generation device based on fluid heat exchange, which comprises a temperature difference power generation chip, wherein fluid cavities for performing heat convection and heat convection of hot fluid and cold fluid are arranged on two sides of the temperature difference power generation chip, a hot-side fluid lead-in connector and a hot-side fluid lead-out connector are arranged on two ends of the hot-side fluid cavity, a cold-side fluid lead-in connector and a cold-side fluid lead-out connector are arranged on two ends of the cold-side fluid cavity, an introduction end hole plate is arranged in the hot-side fluid cavity close to the hot-side fluid lead-in connector, and an introduction end hole. The invention ensures that the heat exchange medium can uniformly and dispersedly flow as much as possible when entering the corresponding chamber and effectively wash out each area of the chamber, avoids the formation of a flow dead zone near the introduction port of the corresponding chamber, effectively increases the heat exchange area at two sides of the thermoelectric power generation chip, further effectively increases the actual working temperature difference at two sides of the thermoelectric power generation chip, and improves the output power of the converted electric energy.

Description

Thermoelectric power generation device based on fluid heat exchange
Technical Field
The invention relates to a temperature difference power generation device, in particular to a temperature difference power generation device based on fluid heat exchange.
Background
In human activities or industrial production processes, after the utilization of heat energy is finished, a large amount of heat energy which is not reused, namely waste heat, is discharged, and the waste heat is generally released into the environment by taking waste water or waste gas as a medium, which not only causes a large amount of energy waste, but also greatly destroys the environmental balance, for example, in the field of automobiles, the thermal efficiency of the current vehicle engine is only 35%, and most of the heat after combustion is discharged into the air in a waste gas manner; in the field of new energy, liquid is generally used as a medium after solar heat collection, such as a solar water heater, solar distillation, a solar air conditioner and the like; in the process of geothermal utilization, heat is captured in a mode of injecting cold working media to absorb heat. Problems such as recycling of waste heat or utilization of low-temperature heat sources have been receiving attention from various social circles for a long time.
At present, researchers have proposed to recycle the waste heat discharged from the waste water or waste gas by using thermoelectric generation, so as to recover the energy. The thermoelectric power generation is realized by performing heat exchange between a hot medium and a cold medium on two sides of a thermoelectric power generation chip manufactured according to the Seebeck effect principle; specifically, a hot-side fluid cavity for flowing a heat medium and a cold-side fluid cavity for flowing a cold medium are correspondingly arranged on two sides of the thermoelectric generation chip, and the thermoelectric generation is realized by the heat medium in the hot-side fluid cavity and the cold medium in the cold-side fluid cavity through heat convection.
However, the inside of the hot-side fluid cavity and the inside of the cold-side fluid cavity of the existing thermoelectric power generation device lack a drainage structure for the heat exchange medium, so that the heat exchange medium cannot be effectively flushed to corner regions of the cavities due to sudden expansion of flow when entering the corresponding cavities, a flow dead zone is formed near the introduction port of the corresponding cavity, the heat exchange area of the thermoelectric power generation chip is reduced, and the actual working temperature difference of the two sides of the thermoelectric power generation chip is reduced; in addition, after the heat exchange medium enters the corresponding cavity, when the heat exchange medium exchanges heat with the corresponding surface of the thermoelectric generation chip, the flow boundary layer on the heat exchange surface can be gradually thickened, the heat exchange thermal resistance can be gradually increased, and the actual working temperature difference of the two sides of the thermoelectric generation chip can be reduced. Based on this, the output power of the electric energy converted by the existing temperature difference power generation device is extremely low, and the further development of the temperature difference power generation technology is restricted.
Disclosure of Invention
The technical purpose of the invention is as follows: aiming at the particularity of the temperature difference power generation technology and the defects of the prior art, the temperature difference power generation device capable of effectively increasing the actual working temperature difference and improving the electric energy output power obtained by conversion is provided based on fluid heat exchange.
The invention adopts the technical scheme that the thermoelectric generation device based on fluid heat exchange comprises a thermoelectric generation chip, fluid cavities for the heat convection and heat exchange of hot fluid and cold fluid are arranged on two sides of the thermoelectric generation chip, a hot-side fluid lead-in connector and a hot-side fluid lead-out connector are arranged at two ends of the hot-side fluid cavity, a cold-side fluid lead-in connector and a cold-side fluid lead-out connector are arranged at two ends of the cold-side fluid cavity, wherein:
an inlet orifice plate is arranged in the hot-side fluid cavity close to the hot-side fluid inlet joint, and the inlet orifice plate in the hot-side fluid cavity is composed of an orifice plate distributed with a plurality of drainage holes, and the orifice plate is obliquely arranged in a manner that the flow direction of the drainage holes faces to the thermoelectric generation chip; or the leading-in end orifice plate in the hot side fluid cavity consists of at least two orifice plates with a plurality of scattered drainage holes, and the orifice plates are arranged in the hot side fluid cavity in a multi-slope butt joint mode along the width direction of the thermoelectric power generation chip;
an inlet orifice plate is arranged in the cold-side fluid cavity close to the cold-side fluid inlet joint, and the inlet orifice plate in the cold-side fluid cavity is composed of an orifice plate with a plurality of scattered drainage holes, and the orifice plate is obliquely arranged in a manner that the drainage holes flow towards the thermoelectric generation chip; or the leading-in end orifice plate in the cold side fluid cavity is composed of at least two orifice plates with a plurality of drainage holes, and the orifice plates are arranged in the cold side fluid cavity in a multi-slope butt joint mode along the width direction of the thermoelectric power generation chip.
As one of the preferable schemes, a leading-out end pore plate is arranged in the hot-side fluid cavity close to the hot-side fluid leading-out joint, the leading-out end pore plate in the hot-side fluid cavity is composed of a pore plate with a plurality of scattered drainage holes, and the pore plate is obliquely arranged in a mode that the flow direction of the drainage holes is opposite to that of the thermoelectric generation chip; or the pore plates at the leading-out end in the hot side fluid cavity are composed of at least two pore plates with a plurality of drainage holes distributed, and the pore plates are arranged in the hot side fluid cavity in a multi-slope butt joint mode along the width direction of the thermoelectric power generation chip.
As one of preferable schemes, an inner side wall surface of the fluid cavity at the hot side is matched with a corresponding surface of the thermoelectric generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the fluid cavity at the hot side and the corresponding surface of the thermoelectric generation chip. Furthermore, a plurality of turbulence structures are arranged on the inner side wall surface of the hot side fluid cavity in a convex mode towards the hot side fluid cavity, and the turbulence structures are formed by circular convex columns, fish scale-shaped convex blocks, wave-shaped convex plates or baffling-shaped convex plates.
As one preferable scheme, the drainage holes on the inlet end orifice plate or the outlet end orifice plate in the hot side fluid cavity are circular holes; or the drainage holes on the inlet end pore plate or the outlet end pore plate in the hot side fluid cavity are spline holes with convex tooth type grooves on the periphery.
Preferably, the cross section of the hot-side fluid chamber is in a rectangular, triangular, arched, trapezoidal or semicircular structure. Further, the hot side fluid chamber is made of stainless steel, titanium steel, engineering plastics or ceramics.
As one of the preferable schemes, a leading-out end pore plate is arranged in the cold-side fluid cavity close to the cold-side fluid leading-out joint, the leading-out end pore plate in the cold-side fluid cavity is composed of a pore plate distributed with a plurality of drainage holes, and the pore plate is obliquely arranged in a mode that the flow direction of the drainage holes is opposite to that of the thermoelectric generation chip; or the leading-out end pore plates in the cold side fluid cavity are composed of at least two pore plates with a plurality of drainage holes, and the pore plates are arranged in the cold side fluid cavity in a multi-slope butt joint mode along the width direction of the thermoelectric power generation chip.
As one preferable scheme, an inner side wall surface of the cold side fluid cavity is matched with a corresponding surface of the thermoelectric generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity and the corresponding surface of the thermoelectric generation chip. Furthermore, a plurality of turbulence structures are arranged on the inner side wall surface of the cold side fluid cavity in a convex mode towards the hot side fluid cavity, and the turbulence structures are formed by circular convex columns, fish scale-shaped convex blocks, wave-shaped convex plates or baffling-shaped convex plates.
As one preferable scheme, the drainage holes on the inlet end orifice plate or the outlet end orifice plate in the cold side fluid cavity are circular holes; or the drainage holes on the inlet end pore plate or the outlet end pore plate in the cold-side fluid cavity are spline holes with convex tooth type grooves on the periphery.
Preferably, the cross section of the cold-side fluid chamber is in a rectangular, triangular, arched, trapezoidal or semicircular structure. Further, the cold side fluid chamber is made of stainless steel, titanium steel, engineering plastics or ceramics.
The beneficial technical effects of the invention are as follows:
1. according to the invention, the pore plate structures capable of dispersing and guiding the heat exchange medium are respectively arranged in the hot side fluid cavity and the cold side fluid cavity close to the inlet joints, so that the heat exchange medium can uniformly disperse and flow as much as possible when entering the corresponding cavity and can effectively wash to each region of the cavity, and the pore plate structures are particularly obvious under the matching of the spline type drainage holes, thereby avoiding the formation of a flow dead zone near the inlet of the corresponding cavity, effectively increasing the heat exchange area on two sides of the thermoelectric generation chip, further effectively increasing the actual working temperature difference on two sides of the thermoelectric generation chip and improving the output power of the converted electric energy;
2. according to the invention, the pore plate structure capable of dispersing and guiding the heat exchange medium is arranged in the hot side fluid cavity and/or the cold side fluid cavity close to the leading-out connector, so that the heat exchange medium can be uniformly dispersed and flowed as much as possible when being discharged out of the corresponding cavity, the flowing boundary layer on the heat exchange surface is effectively reduced, the heat exchange thermal resistance is reduced, the actual working temperature difference at two sides of the temperature difference power generation chip is further effectively increased, and the output power of the converted electric energy is improved;
3. the inner side wall surface of the hot side fluid cavity and/or the cold side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip through the heat conduction silicone grease layer, so that the heat conduction performance of heat exchange is excellent, the surface of the temperature difference power generation chip can be effectively protected, the heat exchange medium is prevented from being corroded and damaged, and the reliability is good;
4. the turbulent flow structure on the inner side wall surface of the hot side fluid cavity and/or the cold side fluid cavity can reliably increase the heat exchange coefficient of the heat exchange medium, thereby further effectively increasing the actual working temperature difference on two sides of the temperature difference power generation chip and improving the output power of the converted electric energy.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
FIG. 2 is a schematic view of a first arrangement of end orifice plates within a hot side fluid chamber of the present invention.
FIG. 3 is a schematic view of a second arrangement of end orifice plates within a hot side fluid chamber of the present invention.
FIG. 4 is a schematic view of a third arrangement of end orifice plates within a hot side fluid chamber of the present invention.
FIG. 5 is a schematic view of a first configuration of drainage holes in an end-hole plate in a hot-side fluid chamber according to the present invention.
FIG. 6 is a schematic view of a second configuration of drainage holes in an end-hole plate in a hot-side fluid chamber according to the present invention.
FIG. 7 is a schematic view of a third configuration of drainage holes in an end-hole plate in a hot side fluid chamber of the present invention.
FIG. 8 is a schematic view of a first configuration of the inner sidewall surface of the hot side fluid chamber of the present invention.
FIG. 9 is a schematic view of a second configuration of the inner sidewall surface of the hot side fluid chamber of the present invention.
FIG. 10 is a schematic view of a third configuration of the sidewall surface within the hot side fluid cavity of the present invention.
FIG. 11 is a schematic view of a fourth configuration of the inner sidewall surface of the hot side fluid chamber of the present invention.
The reference numbers in the figures mean: 1-thermoelectric generation chip; 11-a wire; 12-power utilization circuit; 2-hot side fluid chamber; 21-hot side fluid inlet joint; 22-introducing a port plate; 23-leading out an end orifice plate; 24-hot side fluid outlet connection; 25-a turbulent flow structure; 3-cold side fluid cavity; 31 — cold side fluid introduction joint; 32-introducing a port plate; 33-leading out end orifice plate; cold side fluid take off connection 34.
Detailed Description
The invention relates to a temperature difference power generation device, in particular to a temperature difference power generation device based on fluid heat exchange, and the main technical content of the invention is explained in detail by combining the drawings of the specification and a plurality of embodiments. It is expressly noted here that the drawings of the present invention are schematic and have been simplified in unnecessary detail for the purpose of clarity and to avoid obscuring the technical solutions that the present invention contributes to the prior art.
Example 1
Referring to fig. 1, 2, 5 and 8, the thermoelectric generation chip 1 is connected with a power utilization circuit 12 through a lead 11. The thermoelectric generation chip 1 is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity 2 is connected to one operation surface of the thermoelectric generation chip 1, a cold-side fluid cavity 3 is connected to the other operation surface of the thermoelectric generation chip 1, and the fluid cavities on the two sides enable hot fluid (such as gas or water with waste heat) and cold fluid (such as gas or water) to realize heat convection on the surfaces of the two sides of the thermoelectric generation chip 1 so as to generate thermoelectric generation.
Specifically, the hot-side fluid chamber 2 is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). Two ends of the hot-side fluid cavity 2 (i.e. the end corresponding to the operation surface of the thermoelectric generation chip 1) are provided with a hot-side fluid inlet and a hot-side fluid outlet, the hot-side fluid inlet is connected with a connector, i.e. a hot-side fluid inlet connector 21, and the hot-side fluid outlet is connected with a connector, i.e. a hot-side fluid outlet connector 24. An inlet pore plate 22 is arranged in the hot-side fluid cavity 2 close to the hot-side fluid inlet joint 21, the inlet pore plate 22 is composed of a pore plate distributed with a plurality of drainage holes, each drainage hole is in a circular hole structure, the drainage holes are regularly arranged in a rectangular array with a plurality of rows and a plurality of columns, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a manner that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip 1 (the inclination angle ranges from 30 degrees to 60 degrees, such as 45 degrees, from the corresponding operation surface of the thermoelectric generation chip 1). A leading-out end pore plate 23 is arranged in the hot side fluid cavity 2 close to the hot side fluid leading-out connector 24, the leading-out end pore plate 23 is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is in a circular hole structure, the drainage holes are regularly arranged in a rectangular array with a plurality of rows and columns, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a manner that the flow direction of the drainage holes is opposite to the operation surface corresponding to the thermoelectric generation chip 1 (the angle of the inclination angle range is about 30-60 degrees, such as 45 degrees and the like, from the operation surface corresponding to the thermoelectric generation chip 1). Generally, the arrangement density of the drainage holes on the inlet end pore plate 22 in the hot-side fluid cavity 2 is higher than that of the drainage holes on the outlet end pore plate 23, and the aperture of each drainage hole on the inlet end pore plate 22 in the hot-side fluid cavity 2 is smaller than that of each drainage hole on the outlet end pore plate 23, so that the heat exchange medium can be uniformly and dispersedly introduced to flow, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the hot side fluid cavity 2 is matched with the corresponding surface of the temperature difference power generation chip 1, and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity 2 and the corresponding surface of the temperature difference power generation chip 1; in addition, a plurality of turbulence structures 25 are arranged on the inner side wall surface of the hot-side fluid cavity 2 in a convex mode towards the hot-side fluid cavity 2, the turbulence structures 25 are formed by circular convex columns, the turbulence structures 25 are regularly arranged in a plurality of rows and columns of rectangular arrays, and the turbulence structures 25 in adjacent rows and/or adjacent rows are preferably staggered.
The cold-side fluid chamber 3 is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). Both ends of the cold-side fluid chamber 3 (i.e., the ends corresponding to the operation surface of the thermoelectric generation chip 1) are provided with a cold-side fluid introduction port to which a connector, i.e., a cold-side fluid introduction connector 31, is connected, and a cold-side fluid withdrawal port to which a connector, i.e., a cold-side fluid withdrawal connector 34, is connected. An inlet orifice plate 32 is arranged in the cold-side fluid cavity 3 close to the cold-side fluid inlet joint 31, the inlet orifice plate 32 is composed of an orifice plate distributed with a plurality of drainage holes, each drainage hole is in a circular hole structure, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a manner that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip 1 (the inclination angle ranges from 30 degrees to 60 degrees, such as 45 degrees, from the corresponding operation surface of the thermoelectric generation chip 1). An outlet end pore plate 33 is arranged in the cold-side fluid cavity 3 close to the cold-side fluid outlet joint 34, the outlet end pore plate 33 is composed of a pore plate which is scattered with a plurality of drainage holes, each drainage hole is in a circular hole structure, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a manner that the flow direction of the drainage holes is opposite to the operation surface corresponding to the thermoelectric generation chip 1 (the angle of the inclination angle range is about 30-60 degrees, such as 45 degrees and the like, from the operation surface corresponding to the thermoelectric generation chip 1). Generally, the arrangement density of the drainage holes on the inlet end hole plate 32 in the cold-side fluid chamber 3 is higher than that of the drainage holes on the outlet end hole plate 33, and the aperture of each drainage hole on the inlet end hole plate 32 in the cold-side fluid chamber 3 is smaller than that of each drainage hole on the outlet end hole plate 33, so that the heat exchange medium can be uniformly introduced and flows in a dispersing manner, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the cold side fluid cavity 3 is matched with the corresponding surface of the thermoelectric generation chip 1, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity 3 and the corresponding surface of the thermoelectric generation chip 1; in addition, be provided with a plurality of vortex structure to cold side fluid cavity 3 with the evagination mode on the inside wall face of cold side fluid cavity 3, this vortex structure is with the shaping of circular projection, and these vortex structures are arranged with the rectangle array rule of multirow multiseriate, and adjacent row and/or adjacent row's vortex structure preferably misplaces.
Example 2
The thermoelectric power generation device comprises a thermoelectric power generation chip, wherein the thermoelectric power generation chip is connected with a power utilization circuit through a lead. The thermoelectric generation chip is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity is connected to one operation surface of the thermoelectric generation chip, and a cold-side fluid cavity is connected to the other operation surface of the thermoelectric generation chip, and the two fluid cavities enable hot fluid (such as gas or water with waste heat) and cold fluid (gas or water) to realize heat convection on the surfaces of the two sides of the thermoelectric generation chip so as to generate thermoelectric generation.
Specifically, the fluid chamber at the hot side is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and the cross section of the fluid chamber is rectangular (or triangular, arched, trapezoidal, or semicircular). And a hot-side fluid inlet and a hot-side fluid outlet are arranged at two ends of the hot-side fluid cavity (namely the end corresponding to the operation surface of the thermoelectric generation chip), a connector, namely a hot-side fluid inlet connector, is connected to the hot-side fluid inlet, and a connector, namely a hot-side fluid outlet connector, is connected to the hot-side fluid outlet. Referring to fig. 3, an inlet orifice plate 22 is arranged in the hot-side fluid chamber 2 near the hot-side fluid inlet joint 21, the inlet orifice plate 22 is composed of two orifice plates with a plurality of scattered drainage holes, the drainage holes on each orifice plate are regularly arranged in a rectangular array with multiple rows and multiple columns, the drainage holes in adjacent rows and/or adjacent rows are preferably staggered, and each drainage hole is in a circular hole structure; the two pore plates are arranged in the fluid cavity 2 at the hot side in a manner of double slope surface butt joint along the width direction of the thermoelectric generation chip 1, and the included angle between the two pore plates is about 100 degrees to 150 degrees, such as 130 degrees and the like). The drainage holes on each pore plate are regularly arranged in a rectangular array with multiple rows and columns, the drainage holes in adjacent rows and/or adjacent lines are preferably staggered, and each drainage hole is in a circular hole structure; the two pore plates are arranged in the fluid cavity at the hot side in a double-slope butt joint mode along the width direction of the thermoelectric generation chip, and the included angle between the two pore plates is about 100 degrees to 150 degrees, such as 130 degrees and the like). Generally, the arrangement density of the drainage holes on the introduction end pore plate in the hot-side fluid cavity is higher than that of the drainage holes on the extraction end pore plate, and the aperture of each drainage hole on the introduction end pore plate in the hot-side fluid cavity is smaller than that of each drainage hole on the extraction end pore plate, so that a heat exchange medium can be uniformly dispersed and introduced to flow, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the hot side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged on the inner side wall surface of the hot side fluid cavity in a convex mode towards the hot side fluid cavity, the turbulence structures are formed by circular convex columns, the turbulence structures are regularly arranged in a multi-row and multi-column rectangular array, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
The cold-side fluid chamber is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). And a cold-side fluid inlet and a cold-side fluid outlet are arranged at two ends of the cold-side fluid cavity (namely, the ends corresponding to the operation surface of the thermoelectric generation chip), a joint, namely a cold-side fluid inlet joint, is connected to the cold-side fluid inlet, and a joint, namely a cold-side fluid outlet joint, is connected to the cold-side fluid outlet. An introduction end pore plate is arranged in the cold side fluid cavity close to the cold side fluid introduction joint, the introduction end pore plate is composed of two pore plates with a plurality of scattered drainage holes, the drainage holes on each pore plate are regularly arranged in a rectangular array with a plurality of rows and a plurality of columns, the drainage holes in adjacent rows and/or adjacent rows are preferably staggered, and each drainage hole is in a circular hole structure; the two pore plates are arranged in the cold-side fluid cavity in a double-slope butt joint mode along the width direction of the thermoelectric power generation chip, and the included angle between the two pore plates is about 100-150 degrees, such as 130 degrees and the like). The leading-out end pore plate is arranged in the cold side fluid cavity close to the cold side fluid leading-out joint and consists of two pore plates with a plurality of scattered drainage holes, the drainage holes on each pore plate are regularly arranged in a rectangular array with a plurality of rows and a plurality of columns, the drainage holes in adjacent rows and/or adjacent rows are preferably staggered, and each drainage hole is in a circular hole structure; the two pore plates are arranged in the cold-side fluid cavity in a double-slope butt joint mode along the width direction of the thermoelectric power generation chip, and the included angle between the two pore plates is about 100-150 degrees, such as 130 degrees and the like). Generally, the arrangement density of the drainage holes on the introduction end hole plate in the cold-side fluid cavity is higher than that of the drainage holes on the extraction end hole plate, and the aperture of each drainage hole on the introduction end hole plate in the cold-side fluid cavity is smaller than that of each drainage hole on the extraction end hole plate, so that a heat exchange medium can be uniformly introduced and flows in a dispersing manner, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the cold side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged in the cold side fluid cavity in a convex mode on the inner side wall surface of the cold side fluid cavity, the turbulence structures are formed by circular convex columns, the turbulence structures are regularly arranged in a plurality of rows and columns of rectangular arrays, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
Example 3
The thermoelectric power generation device comprises a thermoelectric power generation chip, wherein the thermoelectric power generation chip is connected with a power utilization circuit through a lead. The thermoelectric generation chip is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity is connected to one operation surface of the thermoelectric generation chip, and a cold-side fluid cavity is connected to the other operation surface of the thermoelectric generation chip, and the two fluid cavities enable hot fluid (such as gas or water with waste heat) and cold fluid (gas or water) to realize heat convection on the surfaces of the two sides of the thermoelectric generation chip so as to generate thermoelectric generation.
Specifically, the fluid chamber at the hot side is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and the cross section of the fluid chamber is rectangular (or triangular, arched, trapezoidal, or semicircular). And a hot-side fluid inlet and a hot-side fluid outlet are arranged at two ends of the hot-side fluid cavity (namely the end corresponding to the operation surface of the thermoelectric generation chip), a connector, namely a hot-side fluid inlet connector, is connected to the hot-side fluid inlet, and a connector, namely a hot-side fluid outlet connector, is connected to the hot-side fluid outlet. Referring to fig. 4, an inlet orifice plate 22 is arranged in the hot-side fluid chamber 2 near the hot-side fluid inlet joint 21, the inlet orifice plate 22 is composed of eight orifice plates with a plurality of drainage holes distributed therein, the drainage holes on each orifice plate are arranged in parallel and regularly, and each drainage hole is in a circular hole structure; the eight orifice plates are arranged in the fluid cavity 2 at the hot side in a multi-slope butt joint mode along the width direction of the thermoelectric generation chip 1, and the included angle between every two adjacent orifice plates is about 100-150 degrees, such as 130 degrees and the like). The drainage holes on each pore plate are regularly arranged in a rectangular array with multiple rows and columns, the drainage holes in adjacent rows and/or adjacent lines are preferably staggered, and each drainage hole is in a circular hole structure; the two pore plates are arranged in the fluid cavity at the hot side in a double-slope butt joint mode along the width direction of the thermoelectric generation chip, and the included angle between the two pore plates is about 100 degrees to 150 degrees, such as 130 degrees and the like). Generally, the arrangement density of the drainage holes on the introduction end pore plate in the hot-side fluid cavity is higher than that of the drainage holes on the extraction end pore plate, and the aperture of each drainage hole on the introduction end pore plate in the hot-side fluid cavity is smaller than that of each drainage hole on the extraction end pore plate, so that a heat exchange medium can be uniformly dispersed and introduced to flow, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the hot side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged on the inner side wall surface of the hot side fluid cavity in a convex mode towards the hot side fluid cavity, the turbulence structures are formed by circular convex columns, the turbulence structures are regularly arranged in a multi-row and multi-column rectangular array, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
The cold-side fluid chamber is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). And a cold-side fluid inlet and a cold-side fluid outlet are arranged at two ends of the cold-side fluid cavity (namely, the ends corresponding to the operation surface of the thermoelectric generation chip), a joint, namely a cold-side fluid inlet joint, is connected to the cold-side fluid inlet, and a joint, namely a cold-side fluid outlet joint, is connected to the cold-side fluid outlet. An introduction end pore plate is arranged in the cold side fluid cavity close to the cold side fluid introduction joint, the introduction end pore plate is composed of two pore plates with a plurality of scattered drainage holes, the drainage holes on each pore plate are regularly arranged in a rectangular array with a plurality of rows and a plurality of columns, the drainage holes in adjacent rows and/or adjacent rows are preferably staggered, and each drainage hole is in a circular hole structure; the two pore plates are arranged in the cold-side fluid cavity in a double-slope butt joint mode along the width direction of the thermoelectric power generation chip, and the included angle between the two pore plates is about 100-150 degrees, such as 130 degrees and the like). The cold side fluid cavity is internally provided with a leading-out end pore plate close to the cold side fluid leading-out joint, the leading-out end pore plate consists of six pore plates which are scattered with a plurality of drainage holes, the drainage holes on each pore plate are arranged in parallel and regularly, and each drainage hole is in a circular hole structure; the six pore plates are arranged in the cold-side fluid cavity in a multi-slope butt joint mode along the width direction of the thermoelectric power generation chip, and the included angle between the two pore plates is about 100-150 degrees, such as 130 degrees and the like). Generally, the arrangement density of the drainage holes on the introduction end hole plate in the cold-side fluid cavity is higher than that of the drainage holes on the extraction end hole plate, and the aperture of each drainage hole on the introduction end hole plate in the cold-side fluid cavity is smaller than that of each drainage hole on the extraction end hole plate, so that a heat exchange medium can be uniformly introduced and flows in a dispersing manner, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the cold side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged in the cold side fluid cavity in a convex mode on the inner side wall surface of the cold side fluid cavity, the turbulence structures are formed by circular convex columns, the turbulence structures are regularly arranged in a plurality of rows and columns of rectangular arrays, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
Example 4
The thermoelectric power generation device comprises a thermoelectric power generation chip, wherein the thermoelectric power generation chip is connected with a power utilization circuit through a lead. The thermoelectric generation chip is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity is connected to one operation surface of the thermoelectric generation chip, and a cold-side fluid cavity is connected to the other operation surface of the thermoelectric generation chip, and the two fluid cavities enable hot fluid (such as gas or water with waste heat) and cold fluid (gas or water) to realize heat convection on the surfaces of the two sides of the thermoelectric generation chip so as to generate thermoelectric generation.
Specifically, the fluid chamber at the hot side is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and the cross section of the fluid chamber is rectangular (or triangular, arched, trapezoidal, or semicircular). And a hot-side fluid inlet and a hot-side fluid outlet are arranged at two ends of the hot-side fluid cavity (namely the end corresponding to the operation surface of the thermoelectric generation chip), a connector, namely a hot-side fluid inlet connector, is connected to the hot-side fluid inlet, and a connector, namely a hot-side fluid outlet connector, is connected to the hot-side fluid outlet. An inlet orifice plate is arranged in the hot-side fluid cavity close to the hot-side fluid inlet joint, and consists of orifice plates scattered with a plurality of drainage holes, as shown in fig. 6 (or fig. 7), each drainage hole is in a spline hole structure with convex tooth type grooves on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). The drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end pore plate in the hot-side fluid cavity is higher than that of the drainage holes on the extraction end pore plate, and the aperture of each drainage hole on the introduction end pore plate in the hot-side fluid cavity is smaller than that of each drainage hole on the extraction end pore plate, so that a heat exchange medium can be uniformly dispersed and introduced to flow, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the hot side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged on the inner side wall surface of the hot side fluid cavity in a convex mode towards the hot side fluid cavity, the turbulence structures are formed by circular convex columns, the turbulence structures are regularly arranged in a multi-row and multi-column rectangular array, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
The cold-side fluid chamber is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). And a cold-side fluid inlet and a cold-side fluid outlet are arranged at two ends of the cold-side fluid cavity (namely, the ends corresponding to the operation surface of the thermoelectric generation chip), a joint, namely a cold-side fluid inlet joint, is connected to the cold-side fluid inlet, and a joint, namely a cold-side fluid outlet joint, is connected to the cold-side fluid outlet. An introduction end pore plate is arranged in the cold side fluid cavity close to the cold side fluid introduction joint, the introduction end pore plate is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). The cold side fluid cavity is internally provided with a leading-out end pore plate close to the cold side fluid leading-out joint, the leading-out end pore plate is composed of a pore plate which is scattered with a plurality of drainage holes, each drainage hole is in a circular hole structure, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end hole plate in the cold-side fluid cavity is higher than that of the drainage holes on the extraction end hole plate, and the aperture of each drainage hole on the introduction end hole plate in the cold-side fluid cavity is smaller than that of each drainage hole on the extraction end hole plate, so that a heat exchange medium can be uniformly introduced and flows in a dispersing manner, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the cold side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged in the cold side fluid cavity in a convex mode on the inner side wall surface of the cold side fluid cavity, the turbulence structures are formed by circular convex columns, the turbulence structures are regularly arranged in a plurality of rows and columns of rectangular arrays, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
Example 5
The thermoelectric power generation device comprises a thermoelectric power generation chip, wherein the thermoelectric power generation chip is connected with a power utilization circuit through a lead. The thermoelectric generation chip is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity is connected to one operation surface of the thermoelectric generation chip, and a cold-side fluid cavity is connected to the other operation surface of the thermoelectric generation chip, and the two fluid cavities enable hot fluid (such as gas or water with waste heat) and cold fluid (gas or water) to realize heat convection on the surfaces of the two sides of the thermoelectric generation chip so as to generate thermoelectric generation.
Specifically, the fluid chamber at the hot side is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and the cross section of the fluid chamber is rectangular (or triangular, arched, trapezoidal, or semicircular). And a hot-side fluid inlet and a hot-side fluid outlet are arranged at two ends of the hot-side fluid cavity (namely the end corresponding to the operation surface of the thermoelectric generation chip), a connector, namely a hot-side fluid inlet connector, is connected to the hot-side fluid inlet, and a connector, namely a hot-side fluid outlet connector, is connected to the hot-side fluid outlet. An introduction end orifice plate is arranged in the hot side fluid cavity close to the hot side fluid introduction joint, the introduction end orifice plate is composed of an orifice plate distributed with a plurality of drainage holes, each drainage hole is of a spline hole structure with convex tooth type grooves on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). A leading-out end pore plate is arranged in the hot side fluid cavity close to the hot side fluid leading-out joint, the leading-out end pore plate is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end pore plate in the hot-side fluid cavity is higher than that of the drainage holes on the extraction end pore plate, and the aperture of each drainage hole on the introduction end pore plate in the hot-side fluid cavity is smaller than that of each drainage hole on the extraction end pore plate, so that a heat exchange medium can be uniformly dispersed and introduced to flow, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the hot side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged on the inner side wall surface of the hot-side fluid cavity in a convex manner towards the hot-side fluid cavity, as shown in fig. 9, the turbulence structures 25 are formed by fish scale-shaped bumps (i.e. in a shield shape), the turbulence structures are regularly arranged in a plurality of rows and columns of rectangular arrays, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
The cold-side fluid chamber is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). And a cold-side fluid inlet and a cold-side fluid outlet are arranged at two ends of the cold-side fluid cavity (namely, the ends corresponding to the operation surface of the thermoelectric generation chip), a joint, namely a cold-side fluid inlet joint, is connected to the cold-side fluid inlet, and a joint, namely a cold-side fluid outlet joint, is connected to the cold-side fluid outlet. An introduction end pore plate is arranged in the cold side fluid cavity close to the cold side fluid introduction joint, the introduction end pore plate is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). The cold side fluid cavity is internally provided with a leading-out end pore plate close to the cold side fluid leading-out joint, the leading-out end pore plate is composed of a pore plate scattered with a plurality of drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end hole plate in the cold-side fluid cavity is higher than that of the drainage holes on the extraction end hole plate, and the aperture of each drainage hole on the introduction end hole plate in the cold-side fluid cavity is smaller than that of each drainage hole on the extraction end hole plate, so that a heat exchange medium can be uniformly introduced and flows in a dispersing manner, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the cold side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged on the inner side wall surface of the cold side fluid cavity in a convex mode towards the inside of the cold side fluid cavity, the turbulence structures are formed by fish scale-shaped convex blocks (namely, in a shield shape), the turbulence structures are regularly arranged in a plurality of rows and columns of rectangular arrays, and the turbulence structures in adjacent rows and/or adjacent rows are preferably staggered.
Example 6
The thermoelectric power generation device comprises a thermoelectric power generation chip, wherein the thermoelectric power generation chip is connected with a power utilization circuit through a lead. The thermoelectric generation chip is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity is connected to one operation surface of the thermoelectric generation chip, and a cold-side fluid cavity is connected to the other operation surface of the thermoelectric generation chip, and the two fluid cavities enable hot fluid (such as gas or water with waste heat) and cold fluid (gas or water) to realize heat convection on the surfaces of the two sides of the thermoelectric generation chip so as to generate thermoelectric generation.
Specifically, the fluid chamber at the hot side is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and the cross section of the fluid chamber is rectangular (or triangular, arched, trapezoidal, or semicircular). And a hot-side fluid inlet and a hot-side fluid outlet are arranged at two ends of the hot-side fluid cavity (namely the end corresponding to the operation surface of the thermoelectric generation chip), a connector, namely a hot-side fluid inlet connector, is connected to the hot-side fluid inlet, and a connector, namely a hot-side fluid outlet connector, is connected to the hot-side fluid outlet. An introduction end orifice plate is arranged in the hot side fluid cavity close to the hot side fluid introduction joint, the introduction end orifice plate is composed of an orifice plate distributed with a plurality of drainage holes, each drainage hole is of a spline hole structure with convex tooth type grooves on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). A leading-out end pore plate is arranged in the hot side fluid cavity close to the hot side fluid leading-out joint, the leading-out end pore plate is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end pore plate in the hot-side fluid cavity is higher than that of the drainage holes on the extraction end pore plate, and the aperture of each drainage hole on the introduction end pore plate in the hot-side fluid cavity is smaller than that of each drainage hole on the extraction end pore plate, so that a heat exchange medium can be uniformly dispersed and introduced to flow, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the hot side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged on the inner side wall surface of the hot-side fluid cavity in a convex manner towards the hot-side fluid cavity, as shown in fig. 10, the turbulence structures 25 are formed by wave-shaped convex plates, and the turbulence structures are regularly arranged in a multi-row rectangular array.
The cold-side fluid chamber is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). And a cold-side fluid inlet and a cold-side fluid outlet are arranged at two ends of the cold-side fluid cavity (namely, the ends corresponding to the operation surface of the thermoelectric generation chip), a joint, namely a cold-side fluid inlet joint, is connected to the cold-side fluid inlet, and a joint, namely a cold-side fluid outlet joint, is connected to the cold-side fluid outlet. An introduction end pore plate is arranged in the cold side fluid cavity close to the cold side fluid introduction joint, the introduction end pore plate is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). The cold side fluid cavity is internally provided with a leading-out end pore plate close to the cold side fluid leading-out joint, the leading-out end pore plate is composed of a pore plate scattered with a plurality of drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end hole plate in the cold-side fluid cavity is higher than that of the drainage holes on the extraction end hole plate, and the aperture of each drainage hole on the introduction end hole plate in the cold-side fluid cavity is smaller than that of each drainage hole on the extraction end hole plate, so that a heat exchange medium can be uniformly introduced and flows in a dispersing manner, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the cold side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, be provided with a plurality of vortex structure on the inside lateral wall face of cold side fluid cavity with evagination mode in to cold side fluid cavity, this vortex structure is with the shaping of wave flange, and these vortex structures are arranged with multiseriate rectangle array rule.
Example 7
The thermoelectric power generation device comprises a thermoelectric power generation chip, wherein the thermoelectric power generation chip is connected with a power utilization circuit through a lead. The thermoelectric generation chip is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity is connected to one operation surface of the thermoelectric generation chip, and a cold-side fluid cavity is connected to the other operation surface of the thermoelectric generation chip, and the two fluid cavities enable hot fluid (such as gas or water with waste heat) and cold fluid (gas or water) to realize heat convection on the surfaces of the two sides of the thermoelectric generation chip so as to generate thermoelectric generation.
Specifically, the fluid chamber at the hot side is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and the cross section of the fluid chamber is rectangular (or triangular, arched, trapezoidal, or semicircular). And a hot-side fluid inlet and a hot-side fluid outlet are arranged at two ends of the hot-side fluid cavity (namely the end corresponding to the operation surface of the thermoelectric generation chip), a connector, namely a hot-side fluid inlet connector, is connected to the hot-side fluid inlet, and a connector, namely a hot-side fluid outlet connector, is connected to the hot-side fluid outlet. An introduction end orifice plate is arranged in the hot side fluid cavity close to the hot side fluid introduction joint, the introduction end orifice plate is composed of an orifice plate distributed with a plurality of drainage holes, each drainage hole is of a spline hole structure with convex tooth type grooves on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). A leading-out end pore plate is arranged in the hot side fluid cavity close to the hot side fluid leading-out joint, the leading-out end pore plate is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end pore plate in the hot-side fluid cavity is higher than that of the drainage holes on the extraction end pore plate, and the aperture of each drainage hole on the introduction end pore plate in the hot-side fluid cavity is smaller than that of each drainage hole on the extraction end pore plate, so that a heat exchange medium can be uniformly dispersed and introduced to flow, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the hot side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, a plurality of turbulence structures are arranged on the inner side wall surface of the hot side fluid cavity in a convex manner towards the hot side fluid cavity, as shown in fig. 11, the turbulence structures 25 are formed by baffle-shaped convex plates, and the turbulence structures are regularly arranged in a multi-row rectangular array.
The cold-side fluid chamber is made of stainless steel (or titanium steel, or engineering plastic, or ceramic), and has a rectangular (or triangular, arched, trapezoidal, or semicircular cross section). And a cold-side fluid inlet and a cold-side fluid outlet are arranged at two ends of the cold-side fluid cavity (namely, the ends corresponding to the operation surface of the thermoelectric generation chip), a joint, namely a cold-side fluid inlet joint, is connected to the cold-side fluid inlet, and a joint, namely a cold-side fluid outlet joint, is connected to the cold-side fluid outlet. An introduction end pore plate is arranged in the cold side fluid cavity close to the cold side fluid introduction joint, the introduction end pore plate is composed of a pore plate with a plurality of scattered drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes faces to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like away from the corresponding operation surface of the thermoelectric generation chip). The cold side fluid cavity is internally provided with a leading-out end pore plate close to the cold side fluid leading-out joint, the leading-out end pore plate is composed of a pore plate scattered with a plurality of drainage holes, each drainage hole is of a spline hole structure with a convex tooth type groove on the periphery, the drainage holes are regularly arranged in a plurality of rows and columns of rectangular arrays, and the drainage holes in adjacent rows and/or adjacent rows are preferably staggered; the pore plates are obliquely arranged in a mode that the flow direction of the drainage holes is opposite to the corresponding operation surface of the thermoelectric generation chip (the range of the inclination angle is about 30-60 degrees, such as 45 degrees and the like, away from the corresponding operation surface of the thermoelectric generation chip). Generally, the arrangement density of the drainage holes on the introduction end hole plate in the cold-side fluid cavity is higher than that of the drainage holes on the extraction end hole plate, and the aperture of each drainage hole on the introduction end hole plate in the cold-side fluid cavity is smaller than that of each drainage hole on the extraction end hole plate, so that a heat exchange medium can be uniformly introduced and flows in a dispersing manner, and the heat exchange thermal resistance can be effectively reduced. The inner side wall surface of the cold side fluid cavity is matched with the corresponding surface of the temperature difference power generation chip, and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity and the corresponding surface of the temperature difference power generation chip; in addition, be provided with a plurality of vortex structure with evagination mode in to the cold side fluid cavity on the inside wall face of cold side fluid cavity, this vortex structure is with baffling shape flange shaping, and these vortex structures are arranged with multiseriate rectangle array rule.
The above examples are intended to illustrate the invention, but not to limit it; although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: the present invention may be modified from the embodiments described above or substituted for some of the technical features, and such modifications or substitutions do not depart from the spirit and scope of the present invention.

Claims (9)

1. A thermoelectric generation device based on fluid heat exchange comprises a thermoelectric generation chip (1), wherein the thermoelectric generation chip (1) is provided with a left operation surface and a right operation surface which are opposite to each other, a hot-side fluid cavity (2) is connected to one operation surface of the thermoelectric generation chip (1), and a cold-side fluid cavity (3) is connected to the other operation surface of the thermoelectric generation chip, and the fluid cavities on the two sides of the thermoelectric generation chip (1) enable hot fluid and cold fluid to realize convective heat exchange on the surfaces on the two sides of the thermoelectric generation chip (1); the method is characterized in that:
a hot-side fluid lead-in connector (21) and a hot-side fluid lead-out connector (24) corresponding to the end part of the operation surface of the thermoelectric generation chip (1) are arranged at two ends of the hot-side fluid cavity (2), and a lead-in end hole plate (22) is arranged in the hot-side fluid cavity (2) and close to the hot-side fluid lead-in connector (21); the leading-in end orifice plate (22) in the hot side fluid cavity (2) is composed of an orifice plate with a plurality of scattered drainage holes, the orifice plate is obliquely arranged in a mode that the flow direction of the drainage holes faces to the thermoelectric generation chip (1), or the leading-in end orifice plate (22) in the hot side fluid cavity (2) is composed of at least two orifice plates with a plurality of scattered drainage holes, and the orifice plates are arranged in the hot side fluid cavity (2) in a multi-slope butt joint mode along the width direction of the thermoelectric generation chip (1);
the two ends of the cold-side fluid cavity (3) are provided with a cold-side fluid inlet joint (31) and a cold-side fluid outlet joint (34) which correspond to the end parts of the operation surface of the thermoelectric generation chip (1), and an inlet end hole plate (32) is arranged in the cold-side fluid cavity (3) close to the cold-side fluid inlet joint (31); the lead-in end orifice plate (32) in the cold side fluid cavity (3) is composed of an orifice plate distributed with a plurality of drainage holes, the orifice plate is obliquely arranged in a mode that the flow direction of the drainage holes faces the thermoelectric generation chip (1), or the lead-in end orifice plate (32) in the cold side fluid cavity (3) is composed of at least two orifice plates distributed with a plurality of drainage holes, and the orifice plates are arranged in the cold side fluid cavity (3) in a multi-slope butt joint mode along the width direction of the thermoelectric generation chip (1).
2. The thermoelectric power generation device based on fluid heat exchange of claim 1, wherein: a leading-out end pore plate (23) is arranged in the hot-side fluid cavity (2) close to the hot-side fluid leading-out connector (24), the leading-out end pore plate (23) in the hot-side fluid cavity (2) is composed of a pore plate with a plurality of scattered drainage holes, and the pore plate is obliquely arranged in a mode that the flow direction of the drainage holes is opposite to that of the thermoelectric generation chip (1); or the leading-out end orifice plate (23) in the hot side fluid cavity (2) is composed of at least two orifice plates with a plurality of drainage holes distributed, and the orifice plates are arranged in the hot side fluid cavity (2) in a multi-slope butt joint mode along the width direction of the thermoelectric generation chip (1).
3. The thermoelectric power generation device based on fluid heat exchange of claim 1 or 2, wherein: the inner side wall surface of the hot side fluid cavity (2) is matched with the corresponding surface of the thermoelectric generation chip (1), and a heat conduction silicone grease layer is filled between the inner side wall surface of the hot side fluid cavity (2) and the corresponding surface of the thermoelectric generation chip (1).
4. The thermoelectric power generation device based on fluid heat exchange of claim 3, wherein: a plurality of turbulence structures (25) are arranged on the inner side wall surface of the hot side fluid cavity (2) in an outward convex mode towards the hot side fluid cavity (2), and the turbulence structures (25) are formed by circular convex columns, fish scale-shaped convex blocks, wave-shaped convex plates or baffling convex plates.
5. The thermoelectric power generation device based on fluid heat exchange of claim 2, wherein: the drainage holes on the inlet end pore plate (22) or the outlet end pore plate (23) in the hot side fluid cavity (2) are circular holes; or the drainage holes on the inlet end orifice plate (22) or the outlet end orifice plate (23) in the hot-side fluid cavity (2) are spline holes with convex tooth type grooves on the periphery.
6. The thermoelectric power generation device based on fluid heat exchange of claim 1, wherein: a leading-out end pore plate (33) is arranged in the cold side fluid cavity (3) close to the cold side fluid leading-out connector (34), the leading-out end pore plate (33) in the cold side fluid cavity (3) is composed of a pore plate with a plurality of scattered drainage holes, and the pore plate is obliquely arranged in a mode that the flow direction of the drainage holes is opposite to that of the thermoelectric generation chip (1); or the leading-out end pore plates (33) in the cold side fluid cavity (3) are composed of at least two pore plates with a plurality of drainage holes, and the pore plates are arranged in the cold side fluid cavity (3) in a multi-slope butt joint mode along the width direction of the thermoelectric generation chip (1).
7. The thermoelectric power generation device based on fluid heat exchange of claim 1 or 6, wherein: the inner side wall surface of the cold side fluid cavity (3) is matched with the corresponding surface of the thermoelectric generation chip (1), and a heat conduction silicone grease layer is filled between the inner side wall surface of the cold side fluid cavity (3) and the corresponding surface of the thermoelectric generation chip (1).
8. The thermoelectric power generation device based on fluid heat exchange of claim 7, wherein: the inner side wall surface of the cold side fluid cavity (3) is provided with a plurality of turbulence structures in a convex mode towards the cold side fluid cavity (3), and the turbulence structures are formed by round convex columns, fish scale-shaped convex blocks, wave-shaped convex plates or baffling-shaped convex plates.
9. The thermoelectric power generation device based on fluid heat exchange of claim 6, wherein: the lead-in end hole plate (32) or the lead-out end hole plate (33) in the cold side fluid cavity (3) is a circular hole; or the drainage holes on the inlet end hole plate (32) or the outlet end hole plate (33) in the cold-side fluid cavity (3) are spline holes with convex tooth type grooves on the periphery.
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