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JP3726743B2 - Thermal resistance control device - Google Patents
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JP3726743B2 - Thermal resistance control device - Google Patents

Thermal resistance control device Download PDF

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Publication number
JP3726743B2
JP3726743B2 JP2001359674A JP2001359674A JP3726743B2 JP 3726743 B2 JP3726743 B2 JP 3726743B2 JP 2001359674 A JP2001359674 A JP 2001359674A JP 2001359674 A JP2001359674 A JP 2001359674A JP 3726743 B2 JP3726743 B2 JP 3726743B2
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Japan
Prior art keywords
thermal resistance
mounting portion
heating element
columnar
control device
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JP2001359674A
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Japanese (ja)
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JP2003163482A (en
Inventor
勉 村山
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NEC Corp
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NEC Corp
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Description

【0001】
【発明の属する技術分野】
本発明は発熱部と放熱部とが接触する部分の熱抵抗を制御する熱抵抗制御装置に関する。
【0002】
【従来の技術】
近年、電子機器の高集積化に伴い発生する熱の処理が大きな問題となっている。精密な機器では動作時および非動作時の許容温度範囲が制限される場合が多い。特に人工衛星等に搭載される機器において、太陽光を受ける部分と受けない部分とで、大きな温度差が生じ熱的に厳しい条件となる。こうした熱的に厳しい条件で使用される機器は通常、機器側の熱放射面または衛星構体側の放熱体取付部までの放熱経路における熱抵抗をできるだけ小さくするように機器を取り付け、機器の高温側で許容温度範囲内になるようにしている。
【0003】
しかし、衛星の軌道や姿勢変更によっては放熱量が大きく増大し、高温側の対策のために機器が冷却過剰になり、逆に機器の一部を低温側許容温度範囲内に収まるようにヒータを取り付けて暖めるケースがある。これは放熱経路の熱抵抗が一定となっていることが1つの原因である。放熱経路の熱抵抗を制御し、高温時には熱抵抗の値を小さくして機器からの放熱量を大きくし、低温時には熱抵抗の値を大きくして機器からの放熱量を小さくすることができれば、保温用のヒータが必要なくなるとともに、電力量を減らすことができる。
【0004】
熱抵抗を変化させる装置の一例が、特開平05−251595号公報に記載されている。この公報に記載された可変熱抵抗装置は、圧電素子の発生する力を利用して電気的に熱抵抗を変化させる装置である。放熱経路にある2つの熱伝導体間の接触面に圧電素子を配置し、圧電素子に印加する電圧により接触面を加圧制御し、熱抵抗を変化させる装置である。
【0005】
【発明が解決しようとする課題】
しかし、上記公報記載の技術には、次のような問題点がある。第1は、熱抵抗値を最も小さいままの状態で維持するためには、常に圧電素子に最大電圧を加えつづけなければならないことである。これは最も熱を放熱したいときに、圧電素子からの発熱量が最も大きくなり、放熱のために逆に熱を発生させていることになる。第2は、熱抵抗を小さくしにくく放熱能力の増大が困難な構造になっていることである。圧電素子の発生する応力は、そのまま接触圧にはならず、熱伝導体を変形させるために使われてしまう。一般に熱伝導率のよい物質としては銅やアルミニウムなどの金属であるが、熱抵抗を小さくするためにはできるだけ厚い金属(銅やアルミニウムなど)を使用することが望ましい。しかしそのような金属を変形させるに大きな力が必要となる。変形をよくするためには厚さの薄い部分を設ける必要があるが、その部分では熱抵抗が大きくなってしまい、金属の熱伝導率の良さを活かせない。より多くの力を発生させるために、圧電素子を多量に用いれば、この部分からの発熱量が増大する。したがって、放熱能力を増大させるために、単に圧電素子を増設することは解決策とはならない。一方、放熱シートのような変形しやすい物質の熱伝導率は、金属とは数桁以上悪いため、全体としては熱抵抗を小さくすることは困難である。
【0006】
本発明は、以上の課題に鑑み、むだな電力を発生させず効率よく熱抵抗を制御できる熱抵抗制御装置を提供することを目的とする。
【0007】
【課題を解決するための手段】
上記課題を解決する本発明の熱抵抗制御装置は、互いに直接接触または所定間隔で近接して配置された発熱体取付部および放熱体取付部と、これら取付部が接触または近接している領域の周縁部の複数個所においてこれら取付部間に配置された柱状部と、該柱状部を加熱するヒータと、該ヒータを制御する制御部を備える。この装置は、柱状部を介して発熱体取付部と放熱体取付部とが固定接続することができる。発熱体取付部と柱状部の間、および放熱体取付部と柱状部の間にはそれぞれ断熱材を配置することができる。あるいは、発熱体取付部と柱状部は直接接触し、放熱体取付部と柱状部の間に断熱材を配置することができる。
【0009】
上記熱抵抗制御装置では、発熱体取付部と柱状部がボルトで固定し、柱状部と放熱体取付部は該柱状部に形成されたネジ部により該放熱体取付部に固定することができる。発熱体取付部と柱状部、および放熱体取付部と柱状部とは両部分ともボルトで固定することができる。また発熱体取付部は発熱体の一部であり、放熱体取付部は放熱体の一部であることが可能である。
【0010】
上記装置では、熱抵抗を外部から効率的に制御でき、また電力を効率的に使用できる。
【0011】
【発明の実施の形態】
図6は、本発明の熱抵抗制御装置の配置例を示す。本発明の熱抵抗制御装置1は、図6に示すように発熱体14と放熱体24の間に取り付けられ、発熱体14から放熱体24への放熱量を制御するものである。図6では、発熱体14と熱抵抗制御装置1、及び放熱体24と熱抵抗制御装置1とはそれぞれ別個の構成部分である。図6の構成では、熱抵抗制御装置は、発熱体14及び放熱体24とは別個の発熱体取付部及び放熱体取付部を備える。しかし、発熱体取付部は発熱体14の一部であってもよく、放熱体取付部は放熱体24の一部であってもよい。この場合、発熱体14及び放熱体24のそれぞれの一部が直接接触あるいは非常に近接して配置し、これら接触部又は近接部の周縁部において発熱体14と放熱体24の間に後述する柱状部を配置する構成となる。
【0012】
図1は、本発明の熱抵抗制御装置の構成例を示す。発熱体取付部11の接触面13と放熱体取付部21の接触面23とが接触して、または非常に近接して対向配置されている。この接触領域の周縁部には柱状部31が2個所に配置されている。柱状部31は板状の断熱材32、33を介して発熱体取付部11と放熱体取付部21の間に取り付けられる。さらに発熱体取付部11と柱状部31は、ボルト(またはネジ)41で固定されている。柱状部31の側面にはヒータ34が接合されており、ヒータ34には温度制御部35が接続する。
【0013】
図3は、柱状部が配置された領域の拡大断面図である。柱状部31は断熱材33、32を介してそれぞれ発熱体取付部11と放熱体取付部21の間に配置されている。発熱体取付部11と柱状部31はボルト41で結合固定されている。また放熱体取付部21と柱状部31は、該柱状部31に形成された雄ネジが放熱体取付部21に形成された雌ネジに嵌めこまれ、結合固定されている。ヒータ34は柱状部31の側面に接合している。
【0014】
上記構成において、既に述べたように発熱体取付部11は発熱体の本体の一部であってもよい。また放熱体取付部21は放熱体の本体の一部であってもよい。断熱材32、33は、セラミクスのような熱伝導率の小さいものが望ましい。柱状部31をできるだけ効率よく加熱し、また発熱体取付部11および放熱体取付部21への影響を最小にするためである。柱状部31はできるだけ線膨張率の大きな材料を用いる。図1では柱状部31は2個所であるが、必要に応じて3個所以上でもよい。また発熱体取付部11と放熱体取付部21の接触しまたは近接する領域の面積は放熱量に応じて設計時に適宜変更する。図3の例では、柱状部31と発熱体取付部11とが独立のボルト41で固定されているが、柱状部31に下側にも雌ネジを形成して柱状部31と放熱体取付部21も同じようにボルトで固定することもできる。
【0015】
本熱抵抗制御装置1の動作について、図1、2を参照して説明する。本装置の初期状態では、発熱体取付部11の接触面13と放熱体取付部21の接触面23は、ボルト41の締め付けにより加圧されて接触している。すなわち初期状態において、接触面13と接触面23の熱抵抗は最も小さい状態になっている。ただし加圧程度によって熱抵抗はある程度変動する。また接触面の表面粗さをできるだけ小さくすることにより初期状態での熱抵抗をより小さくできる。
【0016】
熱抵抗制御装置1の熱抵抗を大きくする場合、ヒータ34を加熱することにより、柱状部31を熱膨張させる。温度制御部35からの制御信号によりヒータ34が発熱し、柱状部31の温度が上昇する。温度上昇に伴い柱状部31は熱膨張し、接触面13と接触面23の間の接触圧が減少し、さらに図2に示されるように隙間ができる。接触面13と接触面23が接触している場合でも、接触圧が減少すれば熱抵抗は大きくなる。柱状部31の熱膨張により発生する隙間は、空気等の媒体を介しての熱伝導になり、真空中では放射となる。いずれも初期状態に比べ熱抵抗が大きくなる。
【0017】
上記構成では熱抵抗を大きくして機器(発熱体)から熱を逃さない、すなわち対象機器を暖める場合にヒータ加熱により熱抵抗を大きくするため、電力の効率利用が図られる。
【0018】
図4に示された構成例では、柱状部31と発熱体取付部11の間に断熱材が挿入されていない。これは、通常熱抵抗を大きくするときは機器等を暖めたい場合が多いためである。熱抵抗制御装置1の熱抵抗を大きくするため、ヒータ34により柱状部31を加熱し熱膨張させるが、そのヒータの熱の一部を積極的に発熱体取付部11側に逃がすことにより、発熱体取付部11に取り付けられている機器をも暖めることができる。
【0019】
図5の構成例では、柱状部31にはヒータが接合しておらず、また温度制御部も取り付けられていない。また、初期状態で接触面13と接触面23の間に隙間ができるような形状となっている。この構成では、発熱体取付部11に取り付けられた機器(発熱体)からの熱のみにより、発熱体取付部11が熱膨張により変形する。接触面13と接触面23とが、発熱体が所定の温度以上になったときに接触し、発熱体から放熱できるように、その間隔を調整しておく。接触面同士が接触すると、接触面23を介して発熱体の熱が放熱され、発熱体取付部11および発熱体の温度を低下させることができる。一定以上の放熱がされれば、発熱体取付部11の温度が下がるため熱収縮がおき、再び接触面13と接触面23の間に隙間ができる。したがって、柱状部31に取り付けていたヒータ等を備えず、初期状態で接触面13と接触面23の間の隙間を調整することにより、放熱量を制御できる。このように図5の構成では一層簡易な構成で熱抵抗を制御できる。
【0020】
【発明の効果】
以上のように、本熱抵抗制御装置では、発熱体取付部と放熱体取付部との間隔をその間に配置された柱状部の熱膨張により制御するので放熱部への熱抵抗を外部から電気的に効率的に制御できる。熱抵抗を大きくする(機器を暖める)場合にヒータを発熱させるので無駄な電力の消費が少ない。
【0021】
またヒータ等を用いない非常に簡易な構成によっても必要な熱抵抗の制御ができる。
【図面の簡単な説明】
【図1】本発明の熱抵抗制御装置の構成例であって初期状態を示す側面図。
【図2】本発明の熱抵抗制御装置の構成例であって熱抵抗の高い状態を示す側面図。
【図3】本発明の熱抵抗制御装置の周縁部の構成例を示す拡大断面図。
【図4】本発明の熱抵抗制御装置の他の構成例を示す側面図。
【図5】 熱抵抗制御装置の他の構成例を示す側面図。
【図6】本発明の熱抵抗制御装置の配置を示す図。
【符号の説明】
11 発熱体取付部
12 放熱体取付部
13、23 接触面
31 柱状部
32、33 断熱材
34 ヒータ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thermal resistance control device that controls the thermal resistance of a portion where a heat generating portion and a heat radiating portion are in contact with each other.
[0002]
[Prior art]
In recent years, the treatment of heat generated with high integration of electronic devices has become a major problem. In precision equipment, the allowable temperature range during operation and non-operation is often limited. In particular, in a device mounted on an artificial satellite or the like, a large temperature difference occurs between a portion that receives sunlight and a portion that does not receive sunlight, which is a severe thermal condition. Equipment that is used under such severe thermal conditions is usually installed so that the thermal resistance in the heat radiation path to the heat radiation surface on the equipment side or the radiator mounting part on the satellite structure side is as small as possible. The temperature is within the allowable temperature range.
[0003]
However, the amount of heat dissipation increases greatly depending on the satellite's orbit and attitude change, and the equipment is overcooled as a countermeasure for the high temperature side, and conversely, the heater is installed so that a part of the equipment falls within the allowable temperature range on the low temperature side. There is a case to attach and warm. One reason for this is that the thermal resistance of the heat dissipation path is constant. If you can control the thermal resistance of the heat dissipation path, decrease the heat resistance value at high temperatures to increase the heat dissipation from the equipment, and increase the thermal resistance value at low temperatures to reduce the heat dissipation from the equipment, A heater for heat insulation is not necessary, and the amount of electric power can be reduced.
[0004]
An example of a device for changing the thermal resistance is described in Japanese Patent Application Laid-Open No. 05-251595. The variable thermal resistance device described in this publication is a device that electrically changes thermal resistance using the force generated by a piezoelectric element. This is a device in which a piezoelectric element is arranged on a contact surface between two heat conductors in a heat radiation path, and the contact surface is subjected to pressure control by a voltage applied to the piezoelectric element to change a thermal resistance.
[0005]
[Problems to be solved by the invention]
However, the technique described in the above publication has the following problems. First, in order to keep the thermal resistance value at the lowest state, the maximum voltage must always be applied to the piezoelectric element. This means that when the heat is most desired to be dissipated, the amount of heat generated from the piezoelectric element is the largest, and heat is conversely generated for heat dissipation. The second is that it has a structure in which it is difficult to reduce the thermal resistance and to increase the heat dissipation capability. The stress generated by the piezoelectric element does not directly become contact pressure, but is used to deform the heat conductor. In general, a material having good thermal conductivity is a metal such as copper or aluminum, but it is desirable to use a metal (such as copper or aluminum) that is as thick as possible in order to reduce the thermal resistance. However, great force is required to deform such a metal. In order to improve the deformation, it is necessary to provide a thin portion, but the thermal resistance increases at that portion, and the good thermal conductivity of the metal cannot be utilized. If a large amount of piezoelectric elements are used to generate more force, the amount of heat generated from this portion increases. Therefore, simply increasing the number of piezoelectric elements in order to increase the heat dissipation capability is not a solution. On the other hand, since the thermal conductivity of a material that is easily deformed, such as a heat radiating sheet, is several orders of magnitude worse than that of a metal, it is difficult to reduce the thermal resistance as a whole.
[0006]
In view of the above problems, an object of the present invention is to provide a thermal resistance control device that can efficiently control thermal resistance without generating wasteful power.
[0007]
[Means for Solving the Problems]
The thermal resistance control device of the present invention that solves the above problems includes a heating element mounting portion and a radiator mounting portion that are arranged in direct contact with each other or close to each other at a predetermined interval, and an area in which these mounting portions are in contact with or close to each other. A columnar portion disposed between the mounting portions at a plurality of positions on the peripheral portion, a heater for heating the columnar portion, and a control unit for controlling the heater are provided. In this device, the heating element mounting portion and the radiator mounting portion can be fixedly connected via the columnar portion. A heat insulating material can be disposed between the heating element mounting portion and the columnar portion, and between the radiator mounting portion and the columnar portion, respectively. Or a heat generating body attachment part and a columnar part can contact directly, and a heat insulating material can be arrange | positioned between a heat radiator attachment part and a columnar part.
[0009]
In the thermal resistance control device, the heating element mounting part and the columnar part can be fixed with bolts, and the columnar part and the radiator mounting part can be fixed to the heatsink mounting part with a screw part formed in the columnar part. Both the heating element mounting part and the columnar part, and the radiator mounting part and the columnar part can be fixed with bolts. The heating element mounting portion may be a part of the heating element, and the radiator mounting portion may be a part of the radiator.
[0010]
In the above apparatus, the thermal resistance can be controlled efficiently from the outside, and the power can be used efficiently.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 6 shows an arrangement example of the thermal resistance control device of the present invention. As shown in FIG. 6, the thermal resistance control device 1 of the present invention is attached between the heating element 14 and the radiator 24 and controls the amount of heat released from the heating element 14 to the radiator 24. In FIG. 6, the heating element 14 and the thermal resistance control device 1, and the radiator 24 and the thermal resistance control device 1 are separate components. In the configuration of FIG. 6, the thermal resistance control device includes a heating element mounting part and a radiator mounting part that are separate from the heating element 14 and the radiator 24. However, the heating element mounting part may be a part of the heating element 14, and the radiator mounting part may be a part of the radiator 24. In this case, a part of each of the heat generating body 14 and the heat radiating body 24 is disposed in direct contact or very close to each other, and a columnar shape described later between the heat generating body 14 and the heat radiating body 24 at the peripheral portion of the contact portion or the adjacent portion. It becomes the structure which arrange | positions a part.
[0012]
FIG. 1 shows a configuration example of a thermal resistance control device of the present invention. The contact surface 13 of the heating element mounting portion 11 and the contact surface 23 of the heat radiator mounting portion 21 are in contact with each other or very close to each other. Two columnar portions 31 are arranged at the peripheral portion of the contact area. The columnar part 31 is attached between the heating element attaching part 11 and the radiator attaching part 21 via plate-like heat insulating materials 32 and 33. Further, the heating element mounting portion 11 and the columnar portion 31 are fixed with bolts (or screws) 41. A heater 34 is joined to the side surface of the columnar portion 31, and a temperature control unit 35 is connected to the heater 34.
[0013]
FIG. 3 is an enlarged cross-sectional view of a region where the columnar portion is disposed. The columnar portion 31 is disposed between the heating element mounting portion 11 and the radiator mounting portion 21 via the heat insulating materials 33 and 32, respectively. The heating element mounting portion 11 and the columnar portion 31 are coupled and fixed by bolts 41. Further, the radiator mounting portion 21 and the columnar portion 31 are coupled and fixed by fitting a male screw formed in the columnar portion 31 into a female screw formed in the radiator mounting portion 21. The heater 34 is joined to the side surface of the columnar portion 31.
[0014]
In the above configuration, as already described, the heating element mounting portion 11 may be a part of the main body of the heating element. Further, the radiator mounting portion 21 may be a part of the main body of the radiator. It is desirable that the heat insulating materials 32 and 33 have a low thermal conductivity such as ceramics. This is because the columnar portion 31 is heated as efficiently as possible, and the influence on the heating element mounting portion 11 and the radiator mounting portion 21 is minimized. The columnar portion 31 is made of a material having as large a linear expansion coefficient as possible. In FIG. 1, there are two columnar portions 31, but three or more may be used as necessary. Further, the area of the region where the heating element mounting portion 11 and the radiator mounting portion 21 are in contact with each other or close to each other is appropriately changed during design according to the heat radiation amount. In the example of FIG. 3, the columnar portion 31 and the heating element mounting portion 11 are fixed by independent bolts 41, but a female screw is also formed on the lower side of the columnar portion 31 to form the columnar portion 31 and the radiator mounting portion. 21 can be similarly fixed with bolts.
[0015]
The operation of the thermal resistance control device 1 will be described with reference to FIGS. In the initial state of the apparatus, the contact surface 13 of the heating element mounting portion 11 and the contact surface 23 of the heat radiator mounting portion 21 are pressed and contacted by tightening the bolt 41. That is, in the initial state, the thermal resistance of the contact surface 13 and the contact surface 23 is the smallest. However, the thermal resistance varies to some extent depending on the degree of pressurization. Further, the thermal resistance in the initial state can be further reduced by reducing the surface roughness of the contact surface as much as possible.
[0016]
When increasing the thermal resistance of the thermal resistance control device 1, the columnar portion 31 is thermally expanded by heating the heater 34. The heater 34 generates heat by the control signal from the temperature control unit 35, and the temperature of the columnar part 31 rises. As the temperature rises, the columnar portion 31 thermally expands, the contact pressure between the contact surface 13 and the contact surface 23 decreases, and a gap is formed as shown in FIG. Even when the contact surface 13 and the contact surface 23 are in contact, the thermal resistance increases as the contact pressure decreases. The gap generated by the thermal expansion of the columnar portion 31 becomes heat conduction through a medium such as air, and is radiated in a vacuum. In either case, the thermal resistance is higher than in the initial state.
[0017]
In the above configuration, the heat resistance is increased so as not to release heat from the device (heating element), that is, when the target device is warmed, the heat resistance is increased by heater heating, so that the power can be used efficiently.
[0018]
In the configuration example shown in FIG. 4, no heat insulating material is inserted between the columnar portion 31 and the heating element mounting portion 11. This is because there are many cases where it is often desirable to warm the device or the like when increasing the thermal resistance. In order to increase the thermal resistance of the thermal resistance control device 1, the columnar portion 31 is heated and thermally expanded by the heater 34. However, heat is generated by positively releasing a part of the heat of the heater to the heating element mounting portion 11 side. The device attached to the body attaching part 11 can also be warmed.
[0019]
In the configuration example of FIG. 5, no heater is joined to the columnar portion 31, and no temperature control unit is attached. In addition, the gap is formed between the contact surface 13 and the contact surface 23 in the initial state. In this configuration, the heating element mounting portion 11 is deformed by thermal expansion only by heat from the device (heating element) attached to the heating element mounting portion 11. The distance between the contact surface 13 and the contact surface 23 is adjusted so that the heat generating element comes into contact with the heat generating element when the temperature rises to a predetermined temperature or higher and heat can be radiated from the heat generating element. When the contact surfaces come into contact with each other, the heat of the heating element is radiated through the contact surface 23, and the temperatures of the heating element mounting portion 11 and the heating element can be lowered. If the heat radiation exceeds a certain level, the temperature of the heating element mounting portion 11 is lowered, so that heat shrinkage occurs, and a gap is formed between the contact surface 13 and the contact surface 23 again. Therefore, the amount of heat radiation can be controlled by adjusting the gap between the contact surface 13 and the contact surface 23 in the initial state without providing a heater or the like attached to the columnar portion 31. Thus, in the configuration of FIG. 5, the thermal resistance can be controlled with a simpler configuration.
[0020]
【The invention's effect】
As described above, in the present thermal resistance control device, the distance between the heating element mounting portion and the radiator mounting portion is controlled by the thermal expansion of the columnar portion disposed therebetween, so that the thermal resistance to the heat dissipation portion is electrically Can be controlled efficiently. When the thermal resistance is increased (the device is warmed), the heater is heated so that useless power consumption is reduced.
[0021]
In addition, the necessary thermal resistance can be controlled with a very simple configuration that does not use a heater or the like.
[Brief description of the drawings]
FIG. 1 is a side view showing an initial state of a configuration example of a thermal resistance control apparatus according to the present invention.
FIG. 2 is a side view showing a configuration example of the thermal resistance control device according to the present invention and showing a state of high thermal resistance.
FIG. 3 is an enlarged cross-sectional view showing a configuration example of a peripheral portion of the thermal resistance control device of the present invention.
FIG. 4 is a side view showing another configuration example of the thermal resistance control device of the present invention.
FIG. 5 is a side view showing another configuration example of the thermal resistance control device.
FIG. 6 is a diagram showing an arrangement of a thermal resistance control device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Heating body attaching part 12 Heating body attaching part 13, 23 Contact surface 31 Columnar part 32, 33 Heat insulating material 34 Heater

Claims (9)

互いに直接接触または所定間隔で近接して配置された発熱体取付部および放熱体取付部と、これら取付部が接触または近接している領域の周縁部の複数個所において前記取付部間に配置された柱状部と、該柱状部を加熱するヒータと、該ヒータを制御する制御部を備えることを特徴とする熱抵抗制御装置。  A heating element mounting portion and a radiator mounting portion that are arranged in direct contact with each other or close to each other at a predetermined interval, and arranged between the mounting portions at a plurality of locations in a peripheral portion of a region where these mounting portions are in contact with or in proximity to each other. A thermal resistance control device comprising: a columnar part; a heater for heating the columnar part; and a control unit for controlling the heater. 前記柱状部を介して前記発熱体取付部と放熱体取付部とが固定接続されている請求項1記載の熱抵抗制御装置。  The thermal resistance control device according to claim 1, wherein the heating element mounting portion and the radiator mounting portion are fixedly connected via the columnar portion. 前記発熱体取付部と柱状部の間、および前記放熱体取付部と柱状部の間にはそれぞれ断熱材が配置されている請求項1または2記載の熱抵抗制御装置。  The thermal resistance control device according to claim 1, wherein a heat insulating material is disposed between the heating element mounting portion and the columnar portion, and between the radiator mounting portion and the columnar portion. 前記発熱体取付部と柱状部は直接接触し、前記放熱体取付部と柱状部の間には断熱材が配置されている請求項1または2記載の熱抵抗制御装置。  The thermal resistance control device according to claim 1, wherein the heating element mounting portion and the columnar portion are in direct contact, and a heat insulating material is disposed between the heat dissipation body mounting portion and the columnar portion. 前記柱状部が熱膨張するとき、前記発熱体取付部と放熱体取付部との接触圧力または間隔が変化する請求項1記載の熱抵抗制御装置。  The thermal resistance control device according to claim 1, wherein when the columnar portion thermally expands, a contact pressure or an interval between the heating element mounting portion and the radiator mounting portion changes. 前記発熱体取付部は発熱体の一部である請求項1ないし請求項5のうちのいずれか1に記載の熱抵抗制御装置。The thermal resistance control device according to any one of claims 1 to 5, wherein the heating element mounting portion is a part of the heating element. 前記放熱体取付部は放熱体の一部である請求項1ないし請求項5のうちのいずれか1に記載の熱抵抗制御装置。Thermal resistance controlling device according to any one of the radiator mounting portion claims 1 which is a part of the heat sink according to claim 5. 前記発熱体取付部と前記柱状部がボルトで固定され、柱状部と放熱体取付部は該柱状部に形成されたネジ部により該放熱体取付部に固定される請求項2記載の熱抵抗制御装置。  The thermal resistance control according to claim 2, wherein the heating element mounting portion and the columnar portion are fixed with bolts, and the columnar portion and the radiator mounting portion are fixed to the radiator mounting portion by a screw portion formed on the columnar portion. apparatus. 前記発熱体取付部と柱状部、および前記放熱体取付部と柱状部とは共にボルトで固定される請求項2記載の熱抵抗制御装置。  The thermal resistance control device according to claim 2, wherein both the heating element mounting portion and the columnar portion, and the heat dissipation body mounting portion and the columnar portion are fixed with bolts.
JP2001359674A 2001-11-26 2001-11-26 Thermal resistance control device Expired - Fee Related JP3726743B2 (en)

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