JPH07335943A - Thermoelectric generating device - Google Patents
Thermoelectric generating deviceInfo
- Publication number
- JPH07335943A JPH07335943A JP6143855A JP14385594A JPH07335943A JP H07335943 A JPH07335943 A JP H07335943A JP 6143855 A JP6143855 A JP 6143855A JP 14385594 A JP14385594 A JP 14385594A JP H07335943 A JPH07335943 A JP H07335943A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- thermoelectric power
- power generation
- pipe
- heat source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は熱電発電ユニットに関
し、いわゆる熱電対の加熱および冷却を行う構造に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoelectric generator unit, and more particularly to a structure for heating and cooling a so-called thermocouple.
【０００２】[0002]
【従来の技術】熱電発電は、一般にＰ型半導体（例えば
Ｂi −Ｔe ）およびＮ型半導体（例えばＳi −Ｇe ）で
いわゆる熱電対を構成し、その両接合部を異なった温度
に保ちゼーベック効果による起電力を利用することによ
り行われている。このような熱電発電の変換効率は低い
が動作の信頼性が高いので、主に宇宙空間での補助電源
として実用化されている。エネルギ資源の乏しい日本で
は、多様な熱源（例えば地熱、工場の廃熱、太陽熱、化
石燃料等の燃焼熱など）に対応して電力を得ることがで
きるので、エネルギの有効利用に有望な可能性を持って
いると考えられている。2. Description of the Related Art In thermoelectric power generation, generally, a so-called thermocouple is composed of a P-type semiconductor (for example, Bi-Te) and an N-type semiconductor (for example, Si-Ge), and both junctions are kept at different temperatures by the Seebeck effect. This is done by using electromotive force. Since such thermoelectric power generation has low conversion efficiency but high operation reliability, it has been put to practical use mainly as an auxiliary power supply in outer space. In Japan, where energy resources are scarce, electric power can be obtained in response to a variety of heat sources (eg, geothermal heat, factory waste heat, solar heat, combustion heat of fossil fuels, etc.), so there is a potential for effective use of energy. Is believed to have.
【０００３】熱電発電の従来装置の概略を図２に示しこ
れを簡単に説明する。この熱電発電ユニット１は、Ｐ型
半導体ＰおよびＮ型半導体Ｎを平面状に配設して隣接す
るＰ型半導体ＰとＮ型半導体Ｎとに銅の接合部２を設け
ていわゆる熱電対を構成し、この熱電対は接合部２を介
して直列に接続することにより構成されている。このよ
うな熱電発電ユニット１の上面３側を加熱するとともに
下面４側を冷却すると、ゼーベック効果によりＰ側端子
には正の起電力が、Ｎ型端子には負の起電力が発生す
る。An outline of a conventional thermoelectric generator is shown in FIG. 2 and will be briefly described. This thermoelectric power generation unit 1 constitutes a so-called thermocouple by arranging a P-type semiconductor P and an N-type semiconductor N in a plane and providing a copper joint 2 between the adjacent P-type semiconductor P and N-type semiconductor N. However, this thermocouple is configured by connecting in series via the joint 2. When the upper surface 3 side of such a thermoelectric power generation unit 1 is heated and the lower surface 4 side is cooled, a positive electromotive force is generated at the P-side terminal and a negative electromotive force is generated at the N-type terminal due to the Seebeck effect.
【０００４】[0004]
【発明が解決しようとする課題】このような熱電発電ユ
ニットでは、多数の電気的接合部を有するので、これら
接合部にかかる機械的および熱的応力を極小に抑えて、
しかも熱交換部と良好な熱的接触を保持し、高温接合部
への熱エネルギの収集と、低温接合部からの低温熱源へ
の熱放散を効率良く行わせることが重要である。Since such a thermoelectric power generation unit has a large number of electrical joints, the mechanical and thermal stress applied to these joints can be suppressed to a minimum.
Moreover, it is important to maintain good thermal contact with the heat exchange part and to efficiently collect heat energy to the high temperature joint part and efficiently dissipate heat from the low temperature joint part to the low temperature heat source.
【０００５】そこでこの発明は、高温接合部への熱エネ
ルギの収集および低温接合部からの低温熱源への熱放散
を良好に行うことができる簡単な構造の熱電発電ユニッ
トを提供することを目的とするものである。Therefore, an object of the present invention is to provide a thermoelectric power generation unit having a simple structure capable of favorably collecting heat energy to a high temperature joint and dissipating heat from a low temperature joint to a low temperature heat source. To do.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
この発明の熱電発電ユニットは、熱電発電素子と絶縁体
とを交互に配設して円筒体を構成し、この円筒体の外周
面および内周面にそれぞれ集電接合部を設け、前記外周
面の集電接合部に外接するヒートパイプを設けるととも
に、前記内周面の集電接合部に内接するヒートパイプを
設けることを特徴とするものである。In order to achieve the above object, a thermoelectric power generation unit of the present invention comprises a cylindrical body in which thermoelectric power generating elements and insulators are alternately arranged, and an outer peripheral surface of the cylindrical body and The present invention is characterized in that current collecting joints are respectively provided on the inner peripheral surface, a heat pipe that circumscribes the current collecting junctions on the outer peripheral surface is provided, and a heat pipe that internally contacts the current collecting junctions on the inner peripheral surface is provided. It is a thing.
【０００７】[0007]
【作用】上記のように構成されたこの発明では、高温熱
源部と低温熱源部との熱エネルギが熱電発電素子に設け
られる集電接合部にヒートパイプの均温特性により良好
に伝達される。さらに、高温熱源部および低温熱源部の
熱授受面積が平面型に比べ増大する。In the present invention configured as described above, the heat energy of the high temperature heat source portion and the heat energy of the low temperature heat source portion are satisfactorily transferred to the current collecting joint portion provided in the thermoelectric power generating element due to the temperature equalizing characteristic of the heat pipe. Further, the heat transfer area of the high temperature heat source part and the low temperature heat source part is increased as compared with the flat type.
【０００８】[0008]
【実施例】以下、この発明の実施例を図面に基づいて説
明する。図１の（ｃ）にこの実施例における全体の概略
図を示し、図１の（ａ）および（ｂ）にその断面構造を
示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 (c) shows an overall schematic view of this embodiment, and FIGS. 1 (a) and 1 (b) show the sectional structure thereof.
【０００９】この実施例の熱電発電ユニット１は、熱電
発電部５と、この熱電発電部５に熱を供給する二重管式
ヒートパイプ６と、前記熱電発電部５から放出される熱
を奪う冷却用ヒートパイプ７とからなっている。この熱
電発電部５は、Ｐ型半導体Ｐと絶縁体８とＮ型半導体Ｎ
とを交互に配設して円筒体を形成している。この円筒体
の外周面および内周面には、その概略を図１の（ｂ）に
示すようにＰ型半導体ＰとＮ型半導体Ｎとを直列に接続
するよう、熱伝導性および電気伝導性が良好な材質（例
えば銅）接合部２ａ，２ｂが設けられている。したがっ
て、これら接合部２ａ，２ｂの間に温度差を与えること
により、Ｐ側電極９ｐには正の起電力、Ｎ型電極９ｎに
は負の起電力を得るようになっている。The thermoelectric power generation unit 1 of this embodiment deprives the thermoelectric power generation section 5, the double-pipe heat pipe 6 for supplying heat to the thermoelectric power generation section 5, and the heat released from the thermoelectric power generation section 5. It consists of a cooling heat pipe 7. The thermoelectric generator 5 includes a P-type semiconductor P, an insulator 8 and an N-type semiconductor N.
And are alternately arranged to form a cylindrical body. The outer peripheral surface and the inner peripheral surface of this cylindrical body have thermal conductivity and electrical conductivity so that a P-type semiconductor P and an N-type semiconductor N are connected in series as shown in FIG. Are provided with good material (for example, copper) joints 2a and 2b. Therefore, a positive electromotive force is obtained at the P-side electrode 9p and a negative electromotive force is obtained at the N-type electrode 9n by providing a temperature difference between the joint portions 2a and 2b.
【００１０】さらにこの実施例では、熱電発電部５の外
周側の接合部２ａに外接する二重管式ヒートパイプ６が
設けられるとともに、熱電発電部５の内周側の接合部２
ｂに内接するヒートパイプ７が設けられている。これら
のヒートパイプ６，７には動作流体として例えば水が封
入され、特に二重管式ヒートパイプ６の外管の内周面に
は周方向のウイック（図示せず）が設けられているた
め、二重管式ヒートパイプ６の内周面全域において水等
が良好に蒸発するようになっている。そして、二重管式
ヒートパイプ６の外部を囲む高温熱源が配設されるとと
もに、ヒートパイプ７の端部は熱電発電部５から突出さ
れるように構成され、この突出部を囲む低温熱源が配設
されている。さらに、二重管式ヒートパイプ６の外周面
およびヒートパイプ７の端部の外周面には、熱授受面積
をより増大させるためのフィン１０が設けられている。
また、高温熱源と低温熱源との間には断熱部材１１が設
けられている。Further, in this embodiment, a double-pipe heat pipe 6 which is circumscribed on the outer peripheral side joint portion 2a of the thermoelectric power generation section 5 is provided, and the inner peripheral side joint section 2 of the thermoelectric power generation section 5 is provided.
A heat pipe 7 inscribed in b is provided. For example, water is enclosed as a working fluid in these heat pipes 6 and 7, and in particular, a circumferential wick (not shown) is provided on the inner peripheral surface of the outer pipe of the double pipe heat pipe 6. Water and the like are satisfactorily evaporated on the entire inner peripheral surface of the double-pipe heat pipe 6. A high-temperature heat source that surrounds the outside of the double-pipe heat pipe 6 is provided, and the end of the heat pipe 7 is configured to project from the thermoelectric power generation unit 5, and the low-temperature heat source that surrounds this projecting portion is It is arranged. Further, fins 10 for increasing the heat transfer area are provided on the outer peripheral surface of the double-pipe heat pipe 6 and the outer peripheral surface of the end portion of the heat pipe 7.
A heat insulating member 11 is provided between the high temperature heat source and the low temperature heat source.
【００１１】上記のように構成した熱電発電ユニット１
の作用につき説明する。ヒートパイプ６，７の均温特性
により、高温熱源から与えられた熱エネルギは熱電発電
部５の高温接合部２ａに安定して供給されるとともに、
低温接合部２ｂに伝達される熱エネルギは安定して冷却
（放熱）される。具体的には、それぞれの接合部２ａ，
２ｂにおいて、消費される熱エネルギに対応して熱エネ
ルギが常に供給され、それぞれの接合部２ａ，２ｂ間の
温度差を一定にするようになる。つまり、熱エネルギを
無駄に消費することなく電気エネルギに変換することが
できる。The thermoelectric generator unit 1 configured as described above.
The action of will be described. Due to the temperature-equalizing characteristics of the heat pipes 6 and 7, the heat energy provided from the high-temperature heat source is stably supplied to the high-temperature joint 2a of the thermoelectric power generator 5, and
The thermal energy transferred to the low temperature joint portion 2b is stably cooled (heat radiation). Specifically, each joint 2a,
In 2b, thermal energy is constantly supplied corresponding to the consumed thermal energy, and the temperature difference between the respective joint portions 2a and 2b becomes constant. That is, it is possible to convert the heat energy into electric energy without wasting it.
【００１２】さらに、それぞれの熱源部と接合部２ａ，
２ｂとの熱授受をヒートパイプ６，７を介して行うた
め、この熱授受面積が円筒状になり、平面型熱電発電ユ
ニットの熱授受面積に比べ増大する。つまり、この熱電
発電ユニット１は平面型に比しスペース効率が良好にな
り、伝熱能力が向上するため熱エネルギが安定して供給
されるようになる。Further, each heat source portion and the joint portion 2a,
Since heat exchange with 2b is performed via the heat pipes 6 and 7, this heat exchange area becomes a cylindrical shape, which is larger than the heat exchange area of the planar thermoelectric generation unit. That is, the thermoelectric generation unit 1 has better space efficiency than the flat type, and the heat transfer capability is improved, so that the heat energy is stably supplied.
【００１３】ここで、この好ましい実施の態様を列記す
ると、Ｐ型半導体と絶縁体とＮ型半導体とを交互に配設
して円筒状の熱電発電部を構成し、この熱電発電部の内
周側および外周側にそれぞれ集電接合部を設け、内周側
の集電接合部に内接する冷却用ヒートパイプを設けると
ともに、外周側の集電接合部に外接する熱供給用の二重
管式ヒートパイプを設け、冷却用ヒートパイプの低温熱
源部を前記円筒体から突出させるとともに、熱供給用の
二重管式ヒートパイプの熱電発電部を囲む部分に高温熱
源を設けることを特徴とした構造である。The preferred embodiments will be listed below. A P-type semiconductor, an insulator, and an N-type semiconductor are alternately arranged to form a cylindrical thermoelectric generator, and the inner circumference of the thermoelectric generator is defined. Side and outer peripheral side each have a current collecting joint, a cooling heat pipe inscribed in the inner peripheral side current collecting joint, and a double pipe type for heat supply circumscribing the outer peripheral side current collecting joint A structure characterized in that a heat pipe is provided, a low temperature heat source part of a cooling heat pipe is projected from the cylindrical body, and a high temperature heat source is provided in a portion surrounding a thermoelectric power generation part of a double-pipe heat pipe for heat supply. Is.
【００１４】なお、上記実施例では円筒状の熱電発電部
の内周側に冷却用ヒートパイプを、熱電発電部の外周側
に熱供給用の二重管式ヒートパイプを設けたが、これら
を入れ替えても好適に実施することができる。また、二
重管式ヒートパイプの熱電発電部を囲む部分に熱源を設
けることにより熱エネルギを供給したが、二重管式ヒー
トパイプの端部を延長させて、その延長部分に熱エネル
ギを供給するようにすることにより、熱電発電部と高温
熱源と低温熱源とをさらに離隔して配設することがで
き、さらに配設の自由度を増大させることができる。In the above embodiment, the heat pipe for cooling is provided on the inner peripheral side of the cylindrical thermoelectric power generation unit, and the double pipe heat pipe for heat supply is provided on the outer peripheral side of the thermoelectric power generation unit. Even if it replaces, it can implement suitably. Also, heat energy was supplied by providing a heat source in the part surrounding the thermoelectric power generation part of the double-tube heat pipe, but the end part of the double-tube heat pipe was extended and heat energy was supplied to the extended part. By doing so, the thermoelectric generator, the high-temperature heat source, and the low-temperature heat source can be arranged further apart, and the degree of freedom of arrangement can be further increased.
【００１５】[0015]
【発明の効果】以上に説明したようにこの発明による
と、熱電発電素子に設けられる集電接合部において、ヒ
ートパイプの均温特性により熱源の熱エネルギを無駄に
伝達しないため、熱エネルギの収集および放散を効率良
く行うことができる。さらに、ヒートパイプを利用する
ことにより、それぞれの熱授受部の面積が増大し伝熱能
力が向上するため、熱エネルギを安定して電気エネルギ
に変換することができ、熱電発電素子が配設される熱電
発電部を小型化することもできる。また、高温熱源部と
低温熱源部とを別個に配設することができるようになる
ため、それぞれの熱源部における熱応力への対応が簡単
になり、設計の自由度が増大するとともに、高温熱源部
と低温熱源部との間に配設される断熱部材の構造を簡単
にすることもできる。As described above, according to the present invention, since the heat energy of the heat source is not wastefully transferred due to the temperature equalizing characteristic of the heat pipe in the current collecting joint portion provided in the thermoelectric power generating element, the heat energy is collected. And it is possible to efficiently dissipate. Furthermore, since the area of each heat transfer part is increased and the heat transfer capability is improved by using the heat pipe, the heat energy can be stably converted into the electric energy, and the thermoelectric power generation element is provided. The thermoelectric power generation unit can be downsized. Further, since the high-temperature heat source part and the low-temperature heat source part can be separately arranged, it becomes easy to cope with the thermal stress in each heat source part, the degree of freedom in design is increased, and the high-temperature heat source is increased. It is also possible to simplify the structure of the heat insulating member arranged between the section and the low temperature heat source section.
【図１】（ａ）はこの発明の一実施例に係る熱電発電ユ
ニットの概略の断面図であり、（ｂ）はいわゆる熱電対
の接続構造を示し、（ｃ）はこの実施例の熱電発電ユニ
ット全体の概略図である。1A is a schematic cross-sectional view of a thermoelectric power generation unit according to an embodiment of the present invention, FIG. 1B shows a so-called thermocouple connection structure, and FIG. 1C is a thermoelectric power generation of this embodiment. It is a schematic diagram of the whole unit.
【図２】従来の熱電発電ユニットの概略図である。FIG. 2 is a schematic diagram of a conventional thermoelectric generator unit.
１…熱電発電ユニット、 ２…接合部、 ５…熱電発電
部、 ６…二重管式ヒートパイプ、 ７…冷却用ヒート
パイプ、 ８…絶縁体、 ９…電極、 １０…フィン、
１１…断熱部材、 Ｐ…Ｐ型半導体、 Ｎ…Ｎ型半導
体。DESCRIPTION OF SYMBOLS 1 ... Thermoelectric power generation unit, 2 ... Junction part, 5 ... Thermoelectric power generation part, 6 ... Double pipe heat pipe, 7 ... Cooling heat pipe, 8 ... Insulator, 9 ... Electrode, 10 ... Fin,
11 ... Insulating member, P ... P-type semiconductor, N ... N-type semiconductor
Claims (1)
て円筒体を構成し、この円筒体の外周面および内周面に
それぞれ集電接合部を設け、前記外周面の集電接合部に
外接するヒートパイプを設けるとともに、前記内周面の
集電接合部に内接するヒートパイプを設けることを特徴
とする熱電発電ユニット。1. A thermoelectric power generating element and an insulator are alternately arranged to form a cylindrical body, and a current collector joint portion is provided on each of an outer peripheral surface and an inner peripheral surface of the cylindrical body, and the outer peripheral surface is provided with a current collector. A thermoelectric power generation unit, wherein a heat pipe circumscribing the joint portion is provided, and a heat pipe inscribed in the current collecting joint portion of the inner peripheral surface is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14385594A JP3442862B2 (en) | 1994-06-02 | 1994-06-02 | Thermoelectric generation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14385594A JP3442862B2 (en) | 1994-06-02 | 1994-06-02 | Thermoelectric generation unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07335943A true JPH07335943A (en) | 1995-12-22 |
| JP3442862B2 JP3442862B2 (en) | 2003-09-02 |
Family
ID=15348541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14385594A Expired - Lifetime JP3442862B2 (en) | 1994-06-02 | 1994-06-02 | Thermoelectric generation unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3442862B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6894215B2 (en) | 2002-01-25 | 2005-05-17 | Komatsu Ltd. | Thermoelectric module |
| EP1662588A1 (en) * | 2003-08-08 | 2006-05-31 | Nagamine Manufacturing Co.,Ltd. | Thermoelectric conversion element and production method therefor |
| JP2006296077A (en) * | 2005-04-08 | 2006-10-26 | Kyoto Univ | Thermoelectric generator and heat exchanger |
| JP2007518252A (en) * | 2003-12-02 | 2007-07-05 | バッテル メモリアル インスティチュート | Thermoelectric device and its use |
| US7834263B2 (en) | 2003-12-02 | 2010-11-16 | Battelle Memorial Institute | Thermoelectric power source utilizing ambient energy harvesting for remote sensing and transmitting |
| US8455751B2 (en) | 2003-12-02 | 2013-06-04 | Battelle Memorial Institute | Thermoelectric devices and applications for the same |
| JP2015032657A (en) * | 2013-08-01 | 2015-02-16 | トヨタ自動車株式会社 | Thermoelectric power generation device |
| JP2015164391A (en) * | 2014-01-30 | 2015-09-10 | スズキ株式会社 | Thermoelectric power generator |
| KR20160046645A (en) * | 2014-10-21 | 2016-04-29 | 국민대학교산학협력단 | Flexible heat sink module apparatus |
| US10062823B2 (en) * | 2014-06-10 | 2018-08-28 | Valeo Systemes Thermiques | Thermoelectric device, a thermoelectric module comprising such a thermoelectric device and a method for producing such a thermoelectric device |
-
1994
- 1994-06-02 JP JP14385594A patent/JP3442862B2/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6894215B2 (en) | 2002-01-25 | 2005-05-17 | Komatsu Ltd. | Thermoelectric module |
| EP1662588A1 (en) * | 2003-08-08 | 2006-05-31 | Nagamine Manufacturing Co.,Ltd. | Thermoelectric conversion element and production method therefor |
| EP1662588A4 (en) * | 2003-08-08 | 2008-02-20 | Nagamine Mfg Co Ltd | Thermoelectric conversion element and production method therefor |
| JP2007518252A (en) * | 2003-12-02 | 2007-07-05 | バッテル メモリアル インスティチュート | Thermoelectric device and its use |
| US7834263B2 (en) | 2003-12-02 | 2010-11-16 | Battelle Memorial Institute | Thermoelectric power source utilizing ambient energy harvesting for remote sensing and transmitting |
| US8455751B2 (en) | 2003-12-02 | 2013-06-04 | Battelle Memorial Institute | Thermoelectric devices and applications for the same |
| US9281461B2 (en) | 2003-12-02 | 2016-03-08 | Battelle Memorial Institute | Thermoelectric devices and applications for the same |
| JP2006296077A (en) * | 2005-04-08 | 2006-10-26 | Kyoto Univ | Thermoelectric generator and heat exchanger |
| JP2015032657A (en) * | 2013-08-01 | 2015-02-16 | トヨタ自動車株式会社 | Thermoelectric power generation device |
| JP2015164391A (en) * | 2014-01-30 | 2015-09-10 | スズキ株式会社 | Thermoelectric power generator |
| US10062823B2 (en) * | 2014-06-10 | 2018-08-28 | Valeo Systemes Thermiques | Thermoelectric device, a thermoelectric module comprising such a thermoelectric device and a method for producing such a thermoelectric device |
| KR20160046645A (en) * | 2014-10-21 | 2016-04-29 | 국민대학교산학협력단 | Flexible heat sink module apparatus |
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