CN109962153B - Stable thermoelectric device - Google Patents
Stable thermoelectric device Download PDFInfo
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- CN109962153B CN109962153B CN201910224943.5A CN201910224943A CN109962153B CN 109962153 B CN109962153 B CN 109962153B CN 201910224943 A CN201910224943 A CN 201910224943A CN 109962153 B CN109962153 B CN 109962153B
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- 238000012546 transfer Methods 0.000 claims abstract description 71
- 239000012782 phase change material Substances 0.000 claims abstract description 31
- 239000004020 conductor Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
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- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention relates to a stable thermoelectric device, which comprises a thermoelectric unit and a heat transfer unit arranged between a heat source and the thermoelectric unit, wherein the heat transfer unit comprises an upper part, a lower part and a cavity arranged between the upper part and the lower part and used for containing phase change materials, a plurality of retaining walls are arranged at the edge parts of the heat transfer unit, gaps are arranged between the retaining walls, the pressure in the gaps is higher than the pressure in the cavity, and the pressure in the gaps is lower than the pressure outside the thermoelectric device. The thermal shock of heat to the thermoelectric device, the setting of barricade and pressure difference can be buffered, the phase change material is prevented from leaking outwards, the stability of the heat transfer unit is improved, and the service life of the thermoelectric device is further prolonged.
Description
Technical Field
The present invention relates to a stable thermoelectric device.
Background
Along with the continuous development of world economy, energy and environment are two major problems facing at present, and in order to solve the energy problem, a plurality of new energy sources such as new energy batteries, new energy automobiles, solar devices and the like are generated, however, no matter automobiles or other equipment devices generate heat, most of the heat cannot be reasonably utilized, becomes waste heat, directly affects the environment and causes energy loss. A thermoelectric device is a device that converts thermal energy into electrical energy, which can effectively use waste heat to avoid energy loss, and thus attracts research heat of many researchers.
At present, a thermoelectric device generally directly adheres to a heat source through a material with good heat conductivity such as metal, the heat source is transferred to the hot end of the thermoelectric device, and heat energy is converted into electric energy through the thermoelectric device. Although heat transfer can be performed directly through metal and the like, heat transfer can be performed quickly, when different heat is faced, the influence on a thermoelectric device is different, such as small heat, the thermoelectric device can bear, when instant large heat is transferred to the thermoelectric device, the instant large heat can cause serious impact on the thermoelectric device due to a certain power limit of the thermoelectric device, the service life of the device is influenced, and when the metal is adopted, heat transfer is quick, heat dissipation is also quick, heat recovery loss can be caused, and the recovery efficiency is low. In addition, when the device faces different heat, the heat transfer component can cause the problems of unstable connection and the like of the device due to the physical phenomenon of thermal expansion and cold contraction, and further the service life of the thermoelectric device is further influenced.
Disclosure of Invention
The invention aims to provide a stable thermoelectric device, reduce the influence of thermal shock on the device, and improve the stability and service life of the device.
In order to achieve the above object, the present invention provides a stable thermoelectric device, including a thermoelectric unit and a heat transfer unit disposed between a heat source and the thermoelectric unit, the heat transfer unit includes an upper portion, a lower portion, and a cavity disposed between the upper portion and the lower portion for accommodating a phase change material, a plurality of retaining walls are disposed at edges of the heat transfer unit, gaps are disposed between the retaining walls, and a pressure in the gaps is higher than a pressure in the cavity, and the pressure in the gaps is lower than an external pressure of the thermoelectric device.
Preferably, the heat transfer unit is made of a heat conductive material.
Preferably, the number of the retaining walls is at least two, the number of the gaps is at least two, and the side parts, the first gaps, the first retaining walls, the second gaps, the second retaining walls and the cavity are sequentially arranged from the side of the heat transfer unit to the central position.
Preferably, the pressure of the first gap is greater than the pressure of the second gap.
Preferably, at least part of the retaining wall is provided in the lower part of the heat transfer unit.
Preferably, at least part of the retaining wall is at least partially provided in the upper part of the heat transfer unit.
Preferably, the retaining wall is of a triangular or trapezoidal structure.
Preferably, an elastic fixing device, such as an elastic clamp, is arranged at the side of the heat transfer unit, when the faced heat is large enough, the upper part and the lower part of the heat transfer unit are further lifted up due to the clearance and the pressure in the cavity, but the arrangement of the elastic component can improve the pressure for the heat transfer unit, so that the sealing between the upper part and the lower part is ensured, and the elastic clamp is selected.
Preferably, at least part of the retaining wall and the upper part of the heat transfer unit are sealed by a flexible film, the strength of the flexible film at the edge part is larger than that of the flexible film near the central part, and when the flexible film between the inner retaining wall and the upper part of the heat transfer unit is prevented from being sealed and broken, the flexible film between the outer retaining wall and the upper part of the heat transfer unit can be kept sealed, so that leakage of the phase change material is prevented. The flexible film is selected, so that the sealing can be effectively realized, the pressure intensity in the gap can be controlled,
preferably, the upper and lower sides of the heat transfer unit are fixed by a fixing means.
Preferably, the fixing means is a resilient clip.
The beneficial effects are that: the device has a simple and compact structure, and can effectively relieve the impact of thermal shock on thermoelectric devices by means of the phase change material in the cavity of the heat transfer unit, and prolong the service life of the devices. And set up a plurality of barricades and space at heat transfer unit limit portion, the pressure in the space reduces by outside inboard in proper order, and the pressure in the space is powerful than the pressure of cavity central authorities cavity, can effectively avoid phase change material's revealing, and the pressure is less than thermoelectric device outside pressure in the space, can further reduce the revealing of comparing the material, in addition, central authorities cavity pressure is less than outside pressure, can effectively inhale heat transfer unit's upper portion and lower part firmly, avoid the separation, and the setting in space also can further improve the suction between heat transfer unit's upper portion and the lower part, avoid the separation, improve stability. In addition, the retaining wall and the upper part of the heat transfer unit are sealed by the flexible film, the strength of the flexible film at the edge part is larger than that of the flexible film near the central part, when the flexible film between the inner retaining wall and the upper part of the heat transfer unit is prevented from being sealed and broken, the flexible film between the outer retaining wall and the upper part of the heat transfer unit can be kept sealed, multiple insurance is provided, and leakage of phase change materials is avoided. And the flexible film is selected, so that the sealing can be effectively realized, and the pressure intensity in the gap can be controlled. Therefore, the device of the invention can effectively relieve the thermal shock of heat to the thermoelectric device, prevent the phase change material from leaking outwards due to the arrangement of the retaining wall, the pressure difference of the gap and the flexible film, and improve the stability of the heat transfer unit, thereby prolonging the service life of the thermoelectric device.
Drawings
Fig. 1 is a schematic diagram of a stabilized thermoelectric device of example 1 of the present invention.
Fig. 2 is a schematic diagram of a stabilized thermoelectric device of example 2 of the present invention.
Fig. 3 is a schematic diagram of a stabilized thermoelectric device of example 3 of the present invention.
Wherein: 1, a cold source; 2, a thermoelectric unit; 3, upper part of the heat transfer unit; 4, the lower part of the heat transfer unit; 6, phase change materials; 7, a heat source; 8-connecting part; 9, a gap; 10, retaining wall; 9-1, gap one; 9-2, a second gap; 10-1, retaining wall one; 10-2, a retaining wall II; 11, a gap; a flexible film.
Detailed Description
Example 1
As shown in fig. 1, the present invention provides a stable thermoelectric device, comprising a thermoelectric unit 2 and a heat transfer unit arranged between a heat source 7 and the thermoelectric unit 2, wherein the heat transfer unit comprises an upper part 3, a lower part 4 and a cavity arranged between the upper part 3 and the lower part 4 and used for accommodating a phase change material 6, a plurality of retaining walls 10 are arranged at the edge part of the heat transfer unit, gaps 9 are arranged between the retaining walls 10, the pressure in the gaps 9 is higher than the pressure in the cavity, the pressure in the gaps 9 is lower than the pressure outside the thermoelectric device, for example, the pressure in the gaps 9 is lower than 5×10 3 The pressure in the cavity is less than 0.5X10 1 . The phase change material can be gas-liquid phase change or solid-liquid phase change material, such as water, oil, etc. When facing heat, the phase change material changes, the pressure in the cavity becomes larger, but because the pressure in the gap 9 is smaller than the atmospheric pressure, the upper part 3 and the lower part 4 of the heat transfer unit can be connected in a sealing way, and the phase change material is ensured not to leak. The heat transfer unit is made of a heat conducting material. The retaining wall 10 is of a triangular or trapezoidal structure; at least part of the retaining wall 10 is at least partially provided with the heat transfer unit lower portion 4; the retaining wall 10 and the upper part of the heat transfer unit are sealed by a flexible membrane 12, so that the pressure in a gap can be effectively sealed and controlled. In order to further improve the stability of the heat transfer unit, the heat transfer unit may be fixed at the sides of the upper part 3 and the lower part 4 of the heat transfer unit by fixing means. The fixing device is fixed as an elastic clamp, and when the heat quantity is enoughWhen the pressure in the gap 9 and the cavity is large enough, the upper part 3 and the lower part 4 of the heat transfer unit are further lifted, but the arrangement of the elastic clamp can improve the pressure for the heat transfer unit, so that the sealing between the upper part 3 and the lower part 4 is ensured, and the elastic clamp is selected. And the detachable heat transfer unit is adopted, so that the phase change material can be replaced or added regularly, and the influence on heat transfer efficiency due to the change of the phase change material is avoided.
The device has a simple and compact structure, and can effectively relieve the impact of thermal shock on thermoelectric devices by means of the phase change material in the cavity of the heat transfer unit, and prolong the service life of the devices. And set up barricade and space at heat transfer unit limit portion, the pressure in the space is greater than the pressure of cavity central authorities ' cavity, can effectively avoid phase change material's revealing, and the pressure is less than thermoelectric device outside pressure in the space, can further reduce and compare revealing of material, in addition, central authorities ' cavity pressure is less than outside pressure, can effectively inhale the upper portion and the lower part of heat transfer unit firmly, avoid the separation, and the setting in space also can further improve the suction between upper portion and the lower part of heat transfer unit, avoid the separation, improve stability. In addition, the retaining wall and the upper part of the heat transfer unit are sealed by a flexible film 12, so that leakage of the phase change material is avoided. And the flexible membrane 12 is selected to effectively seal and control the pressure within the void. Therefore, the device of the invention can effectively relieve the thermal shock of heat to the thermoelectric device, prevent the phase change material from leaking outwards due to the arrangement of the retaining wall, the pressure difference of the gap and the flexible film, and improve the stability of the heat transfer unit, thereby prolonging the service life of the thermoelectric device.
Example two
As shown in fig. 2, the thermoelectric device of the second embodiment is different from that of the first embodiment in that: in the second embodiment, two retaining walls are provided, namely, from outside to inside in sequence: the side part, the first gap 9-1, the first retaining wall 10-1, the second gap 9-2, the second retaining wall 10-2 and the cavity. The pressure of the first gap 9-1 is larger than that of the second gap9-2, the pressure in the first space 9-1 is less than the external pressure, e.g. the pressure in the first space 9-1 is less than 5X 10 3 The pressure of the second gap 9-2 is less than 5 multiplied by 10 2 The pressure in the cavity is less than 0.5X10 1 . The retaining wall is arranged at the lower part of the heat transfer unit. The retaining wall and the upper part of the heat transfer unit are sealed by the flexible film 12, the strength of the flexible film 12 at the edge part is larger than that of the flexible film near the central part, and when the flexible film seal between the inner retaining wall and the upper part of the heat transfer unit is broken, the flexible film between the outer retaining wall and the upper part of the heat transfer unit can be kept sealed, so that the leakage of the phase change material is avoided. The flexible membrane is selected, so that the sealing can be effectively realized, and the pressure in the gap can be controlled. And set up a plurality of barricades and space at heat transfer unit limit portion, the pressure in the space reduces by outside inboard in proper order, and the pressure in the space is stronger than the pressure of cavity central authorities cavity, can effectively avoid phase change material's revealing, and the pressure is less than thermoelectric device outside pressure in the space, can further reduce phase change material's revealing. In addition, the central cavity pressure is lower than the external pressure, the upper part and the lower part of the heat transfer unit can be effectively firmly sucked, separation is avoided, the suction force between the upper part and the lower part of the heat transfer unit can be further improved through the arrangement of the gap, separation is avoided, and stability is improved.
Example III
As shown in fig. 3, the thermoelectric device of the third embodiment is different from that of the second embodiment in that: the second retaining wall 10-2 is disposed at the upper portion of the heat transfer unit, the first retaining wall 10-1 is disposed at the lower portion of the heat transfer unit, and the retaining wall has a triangular structure. Due to the arrangement, the gap in the second gap 9-2 is larger than the first gap, even if the flexible membrane 12 between the second retaining wall and the lower part of the heat transfer unit breaks due to heat absorption change of the phase change material, the leakage can only penetrate from the bottom of the second gap 9-2, and the pressure in the second gap 9-2 is larger than the pressure in the central cavity, so that the penetration amount of the phase change material is small, and after heat absorption is completed, the phase change material is restored to an initial state, and then the phase change material penetrated into the second gap 9-2 can be penetrated into the central space again due to the pressure at the upper part of the gap, so that the leakage of the phase change material to the outside is avoided. In addition, due to the arrangement of the large gaps of the second gaps 9-2, exudation phase-change materials can be greatly contained, and the phase-change materials are prevented from further bursting through the flexible film of the first retaining wall and penetrating into the first gaps 9-1 to cause leakage of the phase-change materials.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A stable thermoelectric device, characterized by: the thermoelectric device comprises a thermoelectric unit and a heat transfer unit arranged between a heat source and the thermoelectric unit, wherein the heat transfer unit comprises an upper part, a lower part and a cavity arranged between the upper part and the lower part and used for accommodating phase change materials, a plurality of retaining walls are arranged at the edge of the heat transfer unit, gaps are arranged between the retaining walls, the pressure in the gaps is higher than the pressure in the cavity, and the pressure in the gaps is lower than the pressure outside the thermoelectric device; at least a portion of the retaining wall is disposed below the heat transfer unit.
2. A stabilized thermoelectric device as in claim 1 wherein: the heat transfer unit is made of a heat conductive material.
3. A stabilized thermoelectric device as in claim 1 wherein: the retaining walls are at least two, the number of the gaps is at least two, and the side parts, the first gaps, the first retaining walls, the second gaps, the second retaining walls and the cavity are arranged in sequence from the side of the heat transfer unit to the central position.
4. A stabilized thermoelectric device as in claim 3 wherein: the pressure of the first gap is larger than that of the second gap.
5. A stabilized thermoelectric device as in claim 1 wherein: at least a portion of the retaining wall is at least partially disposed above the heat transfer unit.
6. A stabilized thermoelectric device as in claim 1 wherein: the retaining wall is of a triangular or trapezoid structure.
7. A stabilized thermoelectric device as in claim 1 wherein: the space between at least part of the retaining wall and the upper part of the heat transfer unit is sealed by a flexible film.
8. A stabilized thermoelectric device as in claim 1 wherein: the upper and lower sides of the heat transfer unit are fixed by a fixing device.
9. A stabilized thermoelectric device as in claim 8 wherein: the fixing device is an elastic clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224943.5A CN109962153B (en) | 2019-03-24 | 2019-03-24 | Stable thermoelectric device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224943.5A CN109962153B (en) | 2019-03-24 | 2019-03-24 | Stable thermoelectric device |
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| Publication Number | Publication Date |
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| CN109962153A CN109962153A (en) | 2019-07-02 |
| CN109962153B true CN109962153B (en) | 2023-08-15 |
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| CN201910224943.5A Active CN109962153B (en) | 2019-03-24 | 2019-03-24 | Stable thermoelectric device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006086402A (en) * | 2004-09-17 | 2006-03-30 | Hitachi Metals Ltd | Tubular thermoelectric module and thermoelectric conversion device |
| JP2006179843A (en) * | 2004-05-31 | 2006-07-06 | Denso Corp | Thermoelectric conversion device and manufacturing method thereof |
| KR20080085622A (en) * | 2007-03-19 | 2008-09-24 | 최병규 | Heat exchange module using electronic heat exchange element and water purifier using the module |
| JP2009200249A (en) * | 2008-02-21 | 2009-09-03 | Tekkusu Iijii:Kk | Thermoelectric conversion device |
| CN103928605A (en) * | 2014-04-30 | 2014-07-16 | 中国科学院上海高等研究院 | A method of manufacturing a thermoelectric device unit |
| CN205646054U (en) * | 2016-02-03 | 2016-10-12 | 上海工程技术大学 | Power battery heat radiation structure |
| CN106594691A (en) * | 2017-02-04 | 2017-04-26 | 厦门大学 | Heat dissipation and waste heat recovery system for high-heat-flux device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8154728B2 (en) * | 2008-12-31 | 2012-04-10 | Spectrasensors, Inc. | Analytical equipment enclosure incorporating phase changing materials |
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2019
- 2019-03-24 CN CN201910224943.5A patent/CN109962153B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006179843A (en) * | 2004-05-31 | 2006-07-06 | Denso Corp | Thermoelectric conversion device and manufacturing method thereof |
| JP2006086402A (en) * | 2004-09-17 | 2006-03-30 | Hitachi Metals Ltd | Tubular thermoelectric module and thermoelectric conversion device |
| KR20080085622A (en) * | 2007-03-19 | 2008-09-24 | 최병규 | Heat exchange module using electronic heat exchange element and water purifier using the module |
| JP2008232502A (en) * | 2007-03-19 | 2008-10-02 | Yasumasa Nagao | Heat exchange module using electronic heat exchanging element and water purifier using the same |
| JP2009200249A (en) * | 2008-02-21 | 2009-09-03 | Tekkusu Iijii:Kk | Thermoelectric conversion device |
| CN103928605A (en) * | 2014-04-30 | 2014-07-16 | 中国科学院上海高等研究院 | A method of manufacturing a thermoelectric device unit |
| CN205646054U (en) * | 2016-02-03 | 2016-10-12 | 上海工程技术大学 | Power battery heat radiation structure |
| CN106594691A (en) * | 2017-02-04 | 2017-04-26 | 厦门大学 | Heat dissipation and waste heat recovery system for high-heat-flux device |
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| CN109962153A (en) | 2019-07-02 |
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