CN202475323U - Cascade type thermoelectric generator - Google Patents
Cascade type thermoelectric generator Download PDFInfo
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- CN202475323U CN202475323U CN2012200044468U CN201220004446U CN202475323U CN 202475323 U CN202475323 U CN 202475323U CN 2012200044468 U CN2012200044468 U CN 2012200044468U CN 201220004446 U CN201220004446 U CN 201220004446U CN 202475323 U CN202475323 U CN 202475323U
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Abstract
The present utility model relates to a cascade type thermoelectric generator. The generator comprises a heat source for generating heat, a thermoelectric generating part for converting heat into electric energy, and a shell; the thermoelectric generating part comprises at least two cascaded thermoelectric generating systems which are successively and radially arranged outward from the heat source along the heat transfer direction, the at least two cascaded thermoelectric generating systems are used for transferring heat grade by grade, each grade of thermoelectric generating system is respectively used for realizing thermoelectric conversion through received heat, and a plurality of radially distributed heat dissipating fins are formed on the outer surface of the shell.
Description
Technical field
The utility model relates to technical field of thermoelectric conversion, is specifically related to a kind of tandem type thermoelectric generator.
Background technology
Thermoelectric (thermoelectric) generation technology is to utilize Sai Beike (Seebeck) effect of thermoelectric material (thermoelectric materials) heat energy to be directly changed into the technology of electric energy; Have characteristics such as the thermoelectric device volume is little, reliability is high, the life-span is long; By thermoelectric transfer principle; Can utilize all thermals source that comprise solar energy; Can obtain powerful electric power with small size, therefore bring into play important effect, and more and more receiving people's attention in technical fields such as space science, military equipment, waste-heat power generations.
Thermoelectric generator is generally cylindrical structure, and adopts single step arrangement, promptly only uses a kind of thermoelectric material or thermoelectric device.Its structure is, thermal source is positioned at the center of cylindrical structure, and thermoelectric device is distributed in the thermal source outside and radially, and the thermoelectric generator outermost layer is a radiator structure, and wherein, thermoelectric device will become electric energy from the thermal power transfer of thermal source.Thermoelectric device is a kind of element that is directly changed into heat energy electric energy, is made up of the homogeneous thermoelectric material usually; Thermoelectric material is that a kind of solid interior carrier moving that utilizes is realized the functional material that heat energy and electric energy are directly changed each other, and the temperature difference at its two ends can produce voltage.
Because performance figure of merit Z (the Z=α of thermoelectric material
2σ/κ, wherein α is the Seebeck coefficient; σ is a conductivity; κ is a thermal conductivity) closely related with the material serviceability temperature, the optimum working temperature of every kind of thermoelectric material interval only a certain specific among a small circle in, exceed that the performance of thermoelectric material will sharply descend behind the optimum working temperature interval.If the actual work temperature scope of thermoelectric material (thermoelectric device) bigger (surpassing single operating temperature range of planting thermoelectric material); The thermoelectric generator that then is made up of single kind homogeneous thermoelectric material is difficult to obtain maximum energy conversion efficiency; Therefore select thermoelectric material (thermoelectric device) for use along the temperature gradient direction with different optimum working temperatures; And it is interval to make it to work in separately its optimum working temperature, can improve thermopower generation efficiency effectively like this.
Can improve thermopower generation efficiency through multistage (segment) combination of thermoelectric material or the cascade (cascade) of thermoelectric device.(The 20 for Kajikawa
ThInternational Conference on Thermoelectrics; Beijing; 2001:49-56), (Energ. Convers. Manage, 2005 (46): 1083-1105) grade has been reported the experimental result that improves the material thermopower generation efficiency through cascade, the compound mode of multistage to El-Genk.In addition, at TOHKEMY 2005-19910, TOHKEMY 2006-245224, WO96/15412, US6722140B2, US6662570B2 also discloses the technical scheme of various multistage composite thermoelectric materials and cascade thermoelectric device in the patents such as US6505468B2.For example, Japanese Patent Laid is opened 2005-19910 and is disclosed having that to have inserted coefficient of thermal expansion between the different thermoelectric materials of coefficient of thermal expansion inequality be other 1 to the 2 kind of thermoelectric material layer that is worth between two materials, thereby has relaxed the technology of thermal stress.Japanese Patent Laid is opened 2006-245224 and is disclosed and be positioned on the insulating properties substrate of the thermoelectric conversion of low-temperature zone with the upper end of device; Loaded the thermoelectric conversion of high temperature section successively with device and clamping parts, thereby reduced the technology that reduces thermal loss when acting on thermoelectric conversion with the thermal stress on the device.
Yet; Though for the compound whole generating efficiency that can improve composite material of the multistage of thermoelectric material; But because each segmentation material is different, there is the unmatched coefficient of expansion in different materials at the linkage interface place, at high temperature easy deformation and cracking; And, can increase extra contact resistance and contact heat resistance at the linkage interface place because the conductivity and the thermal conductivity of different thermoelectric materials are not quite identical.In addition; Download at the interface or can produce in the adjacent interface zone phase counterdiffusion and the chemical reaction between element between element in the long term high temperature effect; Make the thermal stability of material be affected; When secondly optimum geometry requires to differ greatly in each segmentation material, be difficult to the thermopower generation efficiency that obtains to expect.
For the cascade thermoelectric device, there is insulating barrier to separate between general level and the level, promptly the inter-stage cascaded structure requires the insulating barrier of inter-stage to have high heat conduction and high electric insulation property, and will have sufficiently high bonding strength.Because the actual serviceability temperature of cascade thermoelectric device interval is very big; The inter-stage insulating barrier easy of crack of under high temperature and big temperature difference condition, working for a long time; Cause excessive contact resistance and the contact heat resistance of the inner appearance of cascade thermoelectric device, thereby cause thermoelectric device performance degradation even inefficacy.
The utility model content
The utility model technical problem to be solved comprises provides a kind of tandem type thermoelectric generator, and it can improve the electric organ whole efficiency under the prerequisite that does not influence the electric organ reliability.
In order to solve the problems of the technologies described above; The utility model provides a kind of tandem type thermoelectric generator; Comprise the thermal source that produces heat, heat converted to thermoelectric power generation portion, and the shell of electric energy; Wherein, said thermoelectric power generation portion comprises from said thermal source along the heat transferred direction at least two thermoelectric heat generation systems of the cascade that radially outward is provided with successively, and at least two thermoelectric heat generation systems of said cascade transmit heat step by step; And thermoelectric heat generation systems at different levels carry out the thermoelectricity conversion with its heat that receives respectively, and on the outer surface of said shell, are formed with a plurality of radially-arranged radiating fins.
Adopt the utility model, through the cascade of a plurality of thermoelectric heat generation systems, heat is passed to shell from the thermoelectric heat generation system of each temperature section of thermal source process; Heat produces the temperature difference during through thermoelectric heat generation system at different levels; Produce electric energy immediately, and at least two thermoelectric heat generation systems are relatively independent, so that thermoelectric heat generation system can carry out the thermoelectricity conversion relatively independently; Even under the situation of a thrashing, other system still can operate as normal.Thereby under the prerequisite of the reliability that has guaranteed thermoelectric generator, the working temperature that has enlarged thermoelectric generator is interval, has improved the whole efficiency of thermoelectric generator.Can also make the inner heat of electric organ effectively be passed to the outside, widen the temperature difference on the heat transferred direction, improve generating efficiency.
In the utility model; Also can; Thermoelectric heat generation systems at different levels comprise heat collection component, thermoelectric member and the radiating component that radially outward is provided with successively along the heat transferred direction respectively; The high temperature side of said thermoelectric member links to each other with said heat collection component and the low temperature side of said thermoelectric member links to each other with said radiating component, and said thermoelectric member receives heat to carry out the thermoelectricity conversion and further to transmit heat to said radiating component from said heat collection component.
Adopt the utility model, help realizing the thermoelectricity conversion of thermoelectric heat generation systems at different levels.
In the utility model, also can, in the two-stage thermoelectric heat generation system of adjacent setting, the radiating component that is positioned at the upper upper level thermoelectric heat generation system of heat transferred direction is the heat collection component that is positioned at the next next stage thermoelectric heat generation system of heat transferred direction.
Adopt the utility model and since the two-stage thermoelectric heat generation system shared radiating component and heat collection component, therefore guaranteed the continuity of heat transferred, when a system was in failure state, other system still can operate as normal.
In the utility model, also can, thermoelectric heat generation systems at different levels are selected thermoelectric member with different operating temperature according to the temperature at its heat collection component place respectively.
Adopt the utility model, the thermoelectric member of thermoelectric heat generation systems at different levels is in its optimum working temperature separately respectively, therefore can obtain maximum energy conversion efficiency.
In the utility model, also can, the heat collection component of thermoelectric heat generation systems at different levels and radiating component are the tubular structure of coaxial setting, said thermoelectric member is the thermoelectric devices of a plurality of radial distribution between said heat collection component and radiating component.
Adopt the utility model, can improve the conversion efficiency of thermoelectric of whole thermoelectric generator.
In the utility model, also can, the radiating component that is positioned at the most the next thermoelectric heat generation system of heat transferred direction is the shell of said tandem type thermoelectric generator.
Adopt the utility model, shell to can be used as the radiator structure of whole thermoelectric generator system, heat distributes from shell after being passed to shell from thermal source through the thermoelectric heat generation system of each temperature section.
In the utility model, also can, also comprise the clamping fixture so that each member in each thermoelectric heat generation system is compressed between the low temperature side that is connected in said thermoelectric member at the most the next thermoelectric heat generation system of heat transferred direction and the said shell.
Adopt the utility model, can each member in each thermoelectric heat generation system be compressed, thereby keep the good good communication that contacts with the assurance heat between each thermoelectric member and heat collection component, the radiating component through this clamping fixture.
In the utility model, also can, also comprise the supporting member that links to each other with said clamping fixture and be closely set in the inboard of said shell.
Adopt the utility model, the setting through support component both can provide fixing to clamping fixture and support, helped the transmission of heat again.
In the utility model, also can, said clamping fixture compresses mode through screw thread or the spring compression mode compresses each member in each thermoelectric heat generation system.
Adopt the utility model, clamping fixture can reliably and stably compress each member in each thermoelectric heat generation system, guarantees the good communication of heat.
In the utility model, also can, said thermal source is the thermal source with enclosed construction.
Adopt the utility model, this heat source configurations is simple, and need not and external communications, thereby simple in structure with this thermoelectric generator of constructing, and is convenient to make.
In the utility model, also can, said thermal source is the thermal source with pipeline configuration.
Adopt the utility model, thermal source inside can be through connecting with the outside, can be with being incorporated into thermal source inside from an end of shell like the used heat in the exhaust etc., and heat takes place to be transmitted the back and discharge from the other end, make electric organ can utilize this heat energy to produce.
In the utility model, also can, said enclosure axis to two ends be separately installed with pipeline switching interface or the flange that is communicated with the pipeline configuration of said thermal source.
Adopt the utility model, thermal source inside can connect with outside through pipeline switching interface or flange, easily exhaust waste heat etc. is incorporated into thermal source inside from an end of shell, heat takes place transmit the back and discharge from the other end, makes electric organ can utilize this heat energy generation.
In the utility model, also can, said pipeline switching interface or flange are processed by metal material or high temperature resistant organic material.
Adopt the utility model, help the heat of outside is imported thermoelectric generator inside, can improve the generating efficiency of whole generating device system.
In the utility model, also can, said pipeline switching interface or flange through screw threads for fastening or the welding mode link to each other with said shell.
Adopt the utility model, can combine pipeline switching interface or flange and shell more firmly.
In the utility model, also can, said thermoelectric member is by SiGe alloy material, skutterudite or filling skutterudite thermoelectric material, ZnSb
3Base thermoelectricity material, Bi
2Te
3The thermoelectric member of a kind of formation in base thermoelectricity material, half Halas (half-Hesuler) compound thermoelectric material.
Adopting the utility model, can be electric energy with thermal power transfer effectively.
In the utility model, also can, the heat collection component that is positioned at the thermoelectric heat generation system of heat transferred direction upper is processed by the graphite or the metal material of high heat conduction.
Adopt the utility model, can improve the solar collecting performance of this heat collection component.
In the utility model, also can, the heat collection component except the heat collection component of the thermoelectric heat generation system that is positioned at heat transferred direction upper is processed by the high-thermal conductive metal material.
Adopt the utility model, can improve the solar collecting performance of this heat collection component, and can further improve the heat transferred performance, help the thermoelectricity conversion of whole thermoelectric generator.
Preferably, above-mentioned high heat conductive metal material can be a copper, aluminium, or alloy material.
Description of drawings
Fig. 1 is the sketch map of the fin heat dissipation type cascade thermoelectric generator of the utility model first embodiment;
Fig. 2 is the A-A line cutaway view of fin heat dissipation type cascade thermoelectric generator shown in Figure 1;
Fig. 3 is the sketch map of the spiral water-cooled cascade thermoelectric generator of the utility model second embodiment;
Fig. 4 is the B-B line cutaway view of spiral water-cooled cascade thermoelectric generator shown in Figure 3;
Fig. 5 is the sketch map of the U type water-cooled cascade thermoelectric generator of the utility model the 3rd embodiment;
Fig. 6 is the C-C line cutaway view of U type water-cooled cascade thermoelectric generator shown in Figure 5;
Fig. 7 is the sketch map with fin heat dissipation type cascade thermoelectric generator shown in Figure 1 of duct type thermal source;
Fig. 8 is the sketch map with spiral water-cooled cascade thermoelectric generator shown in Figure 3 of duct type thermal source;
Fig. 9 is the sketch map with U type water-cooled cascade thermoelectric generator shown in Figure 5 of duct type thermal source.
Embodiment
Below, with reference to accompanying drawing, and combine following embodiment to further specify the utility model.Should understand accompanying drawing and following embodiment the utility model exemplarily is described, be not to limit the utility model, and in the aim and scope of the utility model, following embodiment can have numerous variations.Wherein, parts identical among each embodiment mark with identical Reference numeral, and are not described in detail.
Fig. 1 to Fig. 9 shows each embodiment of the utility model tandem type thermoelectric generator respectively.The tandem type thermoelectric generator of the utility model; Comprise the thermal source that produces heat, heat converted to thermoelectric power generation portion, and the shell of electric energy; Wherein, Thermoelectric power generation portion comprises from thermal source along the heat transferred direction at least two thermoelectric heat generation systems of the cascade that radially outward is provided with successively, and at least two thermoelectric heat generation systems of this cascade transmit heat step by step, and thermoelectric heat generation system at different levels carries out the thermoelectricity conversion with its heat that receives respectively.The tandem type thermoelectric generator that the utility model provides does not adopt multistage composite thermoelectric material or cascade thermoelectric power generation device, but adopts the cascade of a plurality of thermoelectric heat generation systems.Above-mentioned at least two thermoelectric heat generation systems in the utility model tandem type thermoelectric generator are relatively independent, and under the situation of a thrashing, other system still can operate as normal.
Shown in Fig. 1～9; Thermoelectric generator 10,20,30 shapes of the utility model can be substantial cylindrical; Its central part is provided with thermal source 1; Thermoelectric heat generation system is provided with around thermal source according to the heat transferred direction layer by layer, after the thermoelectric heat generation system that heat passes through each temperature section from thermal source 1 is passed to shell 8, distributes from shell 8.Heat produces the temperature difference during through thermoelectric heat generation system at different levels, produces electric energy immediately, and is positioned at the heat abstractor that outermost shell 8 can be used as whole thermoelectric generator.
The utility model is through two or more independently thermoelectric heat generation systems are combined, and under the prerequisite of the reliability that has guaranteed thermoelectric generator, the working temperature that has enlarged thermoelectric generator is interval, has improved the whole efficiency of thermoelectric generator.
More specifically; In the tandem type thermoelectric generator of the utility model; Above-mentioned thermoelectric heat generation system at different levels comprises heat collector, thermoelectric device and the radiator that radially outward is provided with successively along the heat transferred direction respectively; The high temperature side of thermoelectric device links to each other with heat collector and the low temperature side of this thermoelectric device links to each other with radiator, and this thermoelectric device receives heat to carry out the thermoelectricity conversion also further to the heat sink heat from heat collector.The heat collector of thermoelectric heat generation systems at different levels and radiator are the tubular structure of coaxial setting, and have a plurality of thermoelectric devices of radial distribution between heat collector and radiator.
For above-mentioned thermoelectric generator, in the two-stage thermoelectric heat generation system of adjacent setting, the radiator that is positioned at the upper upper level thermoelectric heat generation system of heat transferred direction is the heat collector that is positioned at the next next stage thermoelectric heat generation system of heat transferred direction.Because the two-stage thermoelectric heat generation system is shared radiator and heat collector, therefore guaranteed the continuity of heat transferred, when a system was in failure state, other system still can operate as normal.
And the thermoelectric device of thermoelectric heat generation systems at different levels can be made up of different thermoelectric materials, and thermoelectric devices at different levels (thermoelectric material) have different optimum working temperatures along the temperature gradient direction.Because the thermoelectric device of thermoelectric heat generation systems at different levels is in its optimum working temperature separately respectively, therefore can obtain maximum energy conversion efficiency.
The thermoelectric material that in the utility model, uses can be as SiGe alloy material, skutterudite or filled skutterudite (like CoSb
3Base) thermoelectric material, ZnSb
3Base thermoelectricity material, Bi
2Te
3A kind of in base thermoelectricity material, half-Hesuler compound (like ZrNiSn base, the TiCoSb base etc.) thermoelectric material.Wherein, the working temperature of SiGe alloy material is 700～1000 ℃; The working temperature of skutterudite or filling skutterudite thermoelectric material is 350～600; ZnSb
3The working temperature of base thermoelectricity material is 200～400 ℃; Bi
2Te
3The working temperature of base thermoelectricity material is 25～300 ℃; The working temperature of half-Hesuler compound is 300～500 ℃.
The thermoelectric material that thermoelectric heat generation systems at different levels can be respectively selected to have the different operating temperature according to the temperature at its heat collector place is to constitute thermoelectric device.In concrete embodiment, for example when the thermoelectric material of the thermoelectric heat generation system of selecting to be positioned at heat transferred direction upper (high temperature section), can select according to heat source temperature.When selecting the thermoelectric material of the next thermoelectric heat generation system (low-temperature zone), the low temperature side temperature of the thermoelectric material of can basis adjacent with this thermoelectric heat generation system upper thermoelectric heat generation system is selected.
In the utility model; The heat collector that is positioned at the one-level thermoelectric heat generation system of heat transferred direction upper is processed with highly heat-conductive material; This highly heat-conductive material can be graphite, copper, aluminium or alloy material; Other grades heat collector except this grade heat collector can adopt the high-thermal conductive metal material to process, and this high-thermal conductive metal material can be copper, aluminium or alloy material.Like this, can further improve the heat transferred performance.
Like Fig. 2, shown in 4 and 6, in the tandem type thermoelectric generator of the utility model, also comprise the low temperature side and the clamping fixture between the shell 6 that are connected at the thermoelectric device of the most the next thermoelectric heat generation system of heat transferred direction.Can each member in each thermoelectric heat generation system be compressed through this clamping fixture 6, thereby keep good contact the between each thermoelectric device and the heat collector to guarantee the good communication of heat.
In addition, in the tandem type thermoelectric generator of the utility model, also comprise the support component 7 that links to each other with clamping fixture 6 and be closely set in the inboard of shell 8.Clamping fixture 6 is connected with support component 7, and support component 7 closely contacts with the shell 8 of cascade thermoelectric generator again, and heat continues to transmit through clamping fixture 6 and support component 7, finally arrives shell 8.Shell 8 also is the integral heat sink structure of whole system.The setting of this support component 7 both can provide support to clamping fixture 6, helped the transmission of heat again.
The shell 8 of the thermoelectric generator of the utility model is the radiator structure of whole thermoelectric generator system, and it can be the shell with various radiator structures, and detailed structure will hereinafter be described.Through these radiator structures, heat can dissipate from shell very soon, thereby widens the temperature difference of whole system on the heat transferred direction, improves the generating efficiency of whole generating system.
Three embodiment to the cascade thermoelectric generator of the utility model describe below in conjunction with accompanying drawing, and parts identical among each embodiment are represented with identical Reference numeral.Following examples have adopted two thermoelectric heat generation systems, are respectively high temperature section electricity generation system and low-temperature zone electricity generation system, but are not limited to this, also can be the combinations more than three or three.
Fig. 1 is the sketch map of the fin heat dissipation type cascade thermoelectric generator 10 of the utility model first embodiment; Fig. 2 is the A-A line cutaway view of fin heat dissipation type cascade thermoelectric generator 10 shown in Figure 1.Can find out that from Fig. 1 and Fig. 2 this thermoelectric generator 10 has the shell 8 of substantial cylindrical; Be provided with coaxial and produce the cylindric thermal source 1 of heat with shell 8 at the center of shell 8; Between shell 8 and thermal source 1, be formed with the Power Generation Section that constitutes by high temperature section electricity generation system and low-temperature zone electricity generation system that heat is converted to electric energy; The high temperature section electricity generation system comprises the high temperature section heat collector 2 of tubular coaxial with shell 8 and that closely contact with thermal source 1 outer wall, radial at certain intervals high temperature section thermoelectric device (thermoelectric material) 3 and the high temperature section radiator 4 coaxial with shell 8 and that closely contact with the low-temperature end of high temperature section thermoelectric device 3 that is arranged on high temperature section heat collector 2 outer surfaces, the low-temperature zone thermoelectric device 5 that the low-temperature zone electricity generation system comprises the low-temperature zone heat collector 4 shared with high temperature section radiator 4, is provided with at certain intervals at low-temperature zone heat collector 4 outer surfaces.Wherein, high temperature section heat collector 2 is with heat transferred to high temperature section thermoelectric device 3, and high temperature section thermoelectric device 3 produces the temperature difference along the heat transferred direction; Produce electric energy thus; The low-temperature end of high temperature section thermoelectric device 3 links to each other with low-temperature zone heat collector 4, and heat continues to be passed to low-temperature zone thermoelectric device 5 through low-temperature zone heat collector 4, and this low-temperature zone thermoelectric device 5 produces the temperature difference equally along the heat transferred direction; Produce electric energy immediately, and further outwards transmit heat.
In the present embodiment, this thermoelectric generator 10 also comprises the clamping fixture 6 that links to each other with the low-temperature end of low-temperature zone thermoelectric device 5, is used to keep each thermoelectric device 3,5 and two heat collectors 2, the good contact to guarantee the good communication of heat between 4.The mode of being fixed of this clamping fixture 6 can adopt screw thread to compress mode in the utility model, perhaps the spring compression mode.
This clamping fixture 6 also is connected with support component 7, and support component 7 closely contacts with shell 8 again.Heat continues to transmit through clamping fixture 6 and support component 7, finally arrives shell 8.This support component 7 both can play effect fixing and support clamping fixture 6, closely contacted with shell 8 owing to it again, thereby helped the transmission of heat.
In addition, in the present embodiment, on the outer surface of shell 8, also be formed with a plurality of radially-arranged radiating fins 9.Help the heat radiation of whole generating device at the radial at certain intervals formation radiating fin of case surface.Through these radiating fins 9, heat can dissipate from shell 8 very soon.
More preferably; Above-mentioned high temperature section thermoelectric device 3, low-temperature zone thermoelectric device 5, clamping fixture 6 and radiating fin 9 form point-blank; Therefore can make inner heat effectively be passed to the outside, widen the temperature difference on the heat transferred direction, improve generating efficiency.
Fig. 3 is the sketch map of the spiral water-cooled cascade thermoelectric generator of the utility model second embodiment; Fig. 4 is the B-B line cutaway view of spiral water-cooled cascade thermoelectric generator shown in Figure 3; And Fig. 8 is the sketch map with spiral water-cooled cascade thermoelectric generator shown in Figure 3 of duct type thermal source.Can find out that from Fig. 3,4 and 8 distinctive points of present embodiment 2 and embodiment 1 is on the outer surface of the shell 8 of electric organ, to be wound with spiral water pipe 11, other are not described in detail in this with embodiment 1 identical structure.Can import cryogenic fluid in this spiral water pipe 11, thereby play the effect of cooled enclosure.Through having the spiral water pipe 11 of cooling effect, can further widen the temperature difference of whole system, improve the generating efficiency of whole generating system.
Fig. 5 is the sketch map of the U type water-cooled cascade thermoelectric generator of the utility model the 3rd embodiment; Fig. 6 is the C-C line cutaway view of U type water-cooled cascade thermoelectric generator shown in Figure 5; Fig. 9 is the sketch map with U type water-cooled cascade thermoelectric generator shown in Figure 5 of duct type thermal source.Can find out that from Fig. 5,6 and 9 present embodiment 3 is that with the distinctive points of embodiment 1 outer surface of the shell 8 of electric organ is provided with U type water pipe 13, can import cryogenic fluid in this U type water pipe 13, thereby play the effect of cooled enclosure.Through having the U type water pipe 13 of cooling effect, can further widen the temperature difference of whole system, improve the generating efficiency of whole generating system.
Through above-mentioned these radiator structures, heat can dissipate from shell very soon, thereby widens the temperature difference of whole system on the heat transferred direction, improves the generating efficiency of whole generating system.
Adopt the tandem type thermoelectric generator of the utility model especially effectively thermal power transfer to be become electric energy, the stability of a system is strong, and generating efficiency is high.
Claims (17)
1. tandem type thermoelectric generator; Comprise the thermal source that produces heat, heat converted to thermoelectric power generation portion, and the shell of electric energy; It is characterized in that: said thermoelectric power generation portion comprises from said thermal source along the heat transferred direction at least two thermoelectric heat generation systems of the cascade that radially outward is provided with successively; At least two thermoelectric heat generation systems of said cascade transmit heat step by step; And thermoelectric heat generation systems at different levels carry out the thermoelectricity conversion with its heat that receives respectively, and on the outer surface of said shell, are formed with a plurality of radially-arranged radiating fins.
2. tandem type thermoelectric generator according to claim 1; It is characterized in that; Thermoelectric heat generation systems at different levels comprise heat collection component, thermoelectric member and the radiating component that radially outward is provided with successively along the heat transferred direction respectively; The high temperature side of said thermoelectric member links to each other with said heat collection component and the low temperature side of said thermoelectric member links to each other with said radiating component, and said thermoelectric member receives heat to carry out the thermoelectricity conversion and further to transmit heat to said radiating component from said heat collection component.
3. tandem type thermoelectric generator according to claim 2; It is characterized in that; In the two-stage thermoelectric heat generation system of adjacent setting, the radiating component that is positioned at the upper upper level thermoelectric heat generation system of heat transferred direction is the heat collection component that is positioned at the next next stage thermoelectric heat generation system of heat transferred direction.
4. tandem type thermoelectric generator according to claim 2 is characterized in that, thermoelectric heat generation systems at different levels are selected thermoelectric member with different operating temperature according to the temperature at its heat collection component place respectively.
5. tandem type thermoelectric generator according to claim 2; It is characterized in that; The heat collection component of thermoelectric heat generation systems at different levels and radiating component are the tubular structure of coaxial setting, and said thermoelectric member is the thermoelectric devices of a plurality of radial distribution between said heat collection component and radiating component.
6. tandem type thermoelectric generator according to claim 2 is characterized in that, the radiating component that is positioned at the most the next thermoelectric heat generation system of heat transferred direction is the shell of said tandem type thermoelectric generator.
7. tandem type thermoelectric generator according to claim 6; It is characterized in that, also comprise the clamping fixture so that each member in each thermoelectric heat generation system is compressed between the low temperature side that is connected in said thermoelectric member at the most the next thermoelectric heat generation system of heat transferred direction and the said shell.
8. tandem type thermoelectric generator according to claim 7 is characterized in that, also comprises the supporting member that links to each other with said clamping fixture and be closely set in the inboard of said shell.
9. tandem type thermoelectric generator according to claim 7 is characterized in that, said clamping fixture compresses mode through screw thread or the spring compression mode compresses each member in each thermoelectric heat generation system.
10. tandem type thermoelectric generator according to claim 1 is characterized in that, said thermal source is the thermal source with enclosed construction.
11. tandem type thermoelectric generator according to claim 1 is characterized in that, said thermal source is the thermal source with pipeline configuration.
12. tandem type thermoelectric generator according to claim 11 is characterized in that, said enclosure axis to two ends be separately installed with pipeline switching interface or the flange that is communicated with the pipeline configuration of said thermal source.
13. tandem type thermoelectric generator according to claim 12 is characterized in that, said pipeline switching interface or flange are processed by metal material or high temperature resistant organic material.
14. tandem type thermoelectric generator according to claim 12 is characterized in that, said pipeline switching interface or flange link to each other with said shell through the mode of screw threads for fastening or welding.
15., it is characterized in that said thermoelectric member is by SiGe alloy material, skutterudite or filling skutterudite thermoelectric material, ZnSb according to each described tandem type thermoelectric generator in the claim 2 to 9
3Base thermoelectricity material, Bi
2Te
3The thermoelectric member of a kind of formation in base thermoelectricity material, the half Halas compound thermoelectric material.
16., it is characterized in that the heat collection component that is positioned at the thermoelectric heat generation system of heat transferred direction upper is processed by the graphite or the metal material of high heat conduction according to each described tandem type thermoelectric generator in the claim 2 to 9.
17. tandem type thermoelectric generator according to claim 16 is characterized in that, the heat collection component except the heat collection component of the thermoelectric heat generation system that is positioned at heat transferred direction upper is processed by the high-thermal conductive metal material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412762A (en) * | 2012-01-06 | 2012-04-11 | 中国科学院上海硅酸盐研究所 | Cascade-type thermoelectric generator |
| CN108417705A (en) * | 2018-04-28 | 2018-08-17 | 同济大学 | A kind of organic/inorganic composite material thermoelectric generating device |
| CN108644745A (en) * | 2018-06-20 | 2018-10-12 | 深圳市漫反射照明科技有限公司 | A kind of energy saving heat recovery system and its energy saving heat recovery method |
-
2012
- 2012-01-06 CN CN2012200044468U patent/CN202475323U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412762A (en) * | 2012-01-06 | 2012-04-11 | 中国科学院上海硅酸盐研究所 | Cascade-type thermoelectric generator |
| CN108417705A (en) * | 2018-04-28 | 2018-08-17 | 同济大学 | A kind of organic/inorganic composite material thermoelectric generating device |
| CN108644745A (en) * | 2018-06-20 | 2018-10-12 | 深圳市漫反射照明科技有限公司 | A kind of energy saving heat recovery system and its energy saving heat recovery method |
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