JP2002016204A - Heat-receiving and radiating structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure very high reliability of equipment by providing a heat receiving and radiating structure, which controls the temperature of a heating element to a very low temperature outside of the conventional temperature control area. SOLUTION: The heat-receiving and radiationg structure is constituted, by charging in a low-temperature medium heat pipe as its main constitution element noninflammable working liquid of <=+50 deg.C in critical temperature, <=80 kg/cm2 in critical pressure, 0 for ozone destruction coefficient (ODP), and <=300 in earth anathermal coefficient (GWP), and the temperature of the structure is controlled below the critical temperature of the working temperature. Consequently, the temperature for the operation of the heating element can be lowered to low temperature, which has been conventionally impossible and then the heat receiving and radiating structure is completed, which guarantees high long-term reliability and high safety of equipment. Especially, this effect is very large, when carbon dioxide is used as the working liquid and a Peltier- effect applied temperature controller is used as a heat-radiating means in combination.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a heat receiving / radiating structure for cooling a heating element. In particular, the present invention relates to the structure of a heat receiving and radiating structure for controlling the temperature of a heating element to a predetermined low temperature, thereby guaranteeing high reliability of the heating element for a long period of time, and is a main component of the structure. Provided is a heat receiving and radiating structure that also guarantees high safety of equipment by employing a non-combustible working fluid in a certain heat pipe. The basic idea is that the heat receiving and radiating structure of the present invention has a configuration that does not adversely affect the global environment.

[0002]

2. Description of the Related Art As a heat transport means applied to a small and efficient heat receiving / radiating structure, a heat pipe technology application structure is becoming an indispensable basic structure because of its high reliability and good sensitivity. However, heat pipe technology has faced a serious crisis since the Kyoto International Conference (Montreal Protocol Parties). It is a two-phase condensable refrigerant with good physical properties that is compatible with aluminum materials, because Freon refrigerant, which is indispensable as a lightweight working fluid for aluminum heat pipes, was subject to regulation at the meeting. And the fact that the two-phase condensable refrigerant as the low-temperature heat transfer fluid has become almost unusable. In other words, the total elimination of CFC (chlorofluorocarbon) based chlorofluorocarbon refrigerants having an extremely large ozone depletion potential (ODP) is out of the question, and HCFCs that have been used on a global scale as alternative chlorofluorocarbons due to their small ODP.
This is due to the decision to completely abolish (hydrochlorofluorocarbon) refrigerants by 2020.

At present, as an alternative chlorofluorocarbon, H with ODP of zero is used.
It is shifting to FC-based refrigerants. However, for example, HF
The global warming potential (GWP) of C134a is 1300 (C
O ₂ = 1), although it has been greatly reduced as compared with CFC-based chlorofluorocarbon refrigerants, at the same meeting, the reduction in GWP of HFC-based chlorofluorocarbon refrigerants is still insufficient. It was decided that system refrigerants would also be subject to emission control. Due to this, the use of HFC-based refrigerants is being avoided by major users on a worldwide scale. In some fields, natural gas-based refrigerants such as butane (C ₄ H ₁₀ ) are recommended as two-phase fluid refrigerants instead of HFC-based refrigerants. However, many of them have an explosive limit (flammability), and therefore cannot be applied to cooling of a heating element in a sealed enclosure from the viewpoint of safety assurance. At present, various HFE (hydrofluoroether) based refrigerants are being developed in various countries.
The point that the GWP of the E-based refrigerant is not as low as about 600, and that the heat pipe has not escaped from the test stage except for some cleaning HFE-based refrigerants. It is said that it will take 10 years or more to be put into practical use as a heat pipe refrigerant because of the need to change the basic structure.

[0004]

When selecting a working fluid for a heat pipe, the most important problem facing the refrigerant under regulation due to chlorofluorocarbon is an appropriate balance of various physical properties of the refrigerant. All of the restricted fluorocarbon-based refrigerants have good compatibility with heat pipes made of aluminum.Conventionally, the refrigerants that have the most appropriate balance of physical properties based on the application conditions of aluminum heat pipes from among them It was possible to choose. However, under the current CFC regulations, the selection range of the refrigerant applicable to the heat pipe has become extremely narrow.

At present, the physical conditions for selecting an applicable refrigerant are as follows. (1) ODP
= 0. (2) GWP ≦ 300 (currently 6
00 is allowed) and as close to 0 as possible. (3) The critical temperature is as high as possible than the temperature obtained by multiplying the maximum temperature reached by the highest temperature portion of the heat pipe during operation (the portion close to the heat receiving surface) by an appropriate temperature rise margin. (4) The critical pressure must be lower than the pressure at which the heat pipe of the applicable structure operates safely. (5) The boiling point is not higher than the temperature obtained by multiplying the minimum operating temperature targeted by the heat pipe by an appropriate temperature drop margin. (6) There is no explosion limit within the heat pipe application conditions. (7)
Not toxic to humans and animals. (8) The heat pipe made of aluminum material has good suitability as a working fluid. (9) Be readily available on the market.
At present, there are almost no two-phase condensable refrigerants having physical properties that satisfy all of such selection conditions required for heat pipes. Particularly difficult conditions are GWP, critical temperature,
It is the boiling point, a condition that must be compromised by limiting the application area of the heat pipe.

Conventionally, chlorofluorocarbon refrigerants are indispensable as working fluids for low-temperature heat pipes, and low-temperature heat pipes, which have relied on the excellent physical properties of chlorofluorocarbon refrigerants, are not only required to maintain performance, but also in terms of applied technology, production and sales. A fatal blow is also taking place. Ammonia is the only refrigerant currently used to make such a low-temperature heat pipe work well.However, this refrigerant has toxic and explosive limits, and strict regulations are imposed on manufacturing conditions assuming that the manufacturing process is dangerous. It is almost unusable except for space heat pipes.

On the other hand, in recent years, electronic devices have been steadily miniaturized, and the degree of integration of semiconductor devices applied thereto has been increasing at a rate of ten times in six years with the progress of manufacturing technology and packaging technology. I've been going all the way. In addition, the operating speed of the semiconductor device has been increased as the clock operating frequency is increased. The amount of heat generated by the element is increasing significantly with higher density and higher speed. Further, the demand for the function of the device is required to be high reliability which is contrary to high density, high speed, and miniaturization. On the other hand, the increase in density by the current mounting technology is almost approaching the limit, and the increase in the element density of the semiconductor element itself is approaching the limit. Furthermore, measures to reduce heat generation for improving reliability are approaching their limits. The present invention provides a heat receiving and radiating structure that solves these problems, proposes a novel refrigerant to solve the problems, and provides a heat receiving and radiating structure having an excellent heat medium function.

[0008]

As a means for solving the problem of heat generation of the equipment in such a situation, it is effective to greatly lower the temperature of the heat generating element and to lower the temperature as low as possible below 0 ° C. Heating element temperature of operating electronic equipment is 0 ° C
In the following, lowering the temperature as much as possible has the following effects.
(1) It is widely known empirically that most of the heat-generating elements greatly reduce the power loss at the time of heat input by lowering the temperature. The reduction in power loss reduces the amount of heat generated by the heating element,
The energy consumption required for the lowering of the temperature is also reduced, and the cooling of the heating element is further facilitated by the double effect.
(2). Lowering the temperature of the heating element greatly extends the life of the element. Each time the temperature drops by 10 ° C., the chemical reaction rate is reduced by half.
When the temperature is lowered by 50 ° C., the temperature-dependent life of the element is extended to ²⁵ = 32 times. However, the life of the element depends not only on the temperature but also on the thermal stress. Although it is impossible to accurately estimate the life extension ratio due to the temperature decrease for various types of heating elements having different designs, it is considered that a temperature decrease of 50 ° C. extends the element life at least ten times or more. Have been. This may be considered to improve the overall reliability of the device by a factor of 10 or more.

Exactly speaking, there is no refrigerant that can be selected as a low-temperature heat pipe working fluid without changing the physical properties of a practically used refrigerant within the refrigerant selection range under the current strict Freon regulations. Absent. The inventor of the present application has focused on a refrigerant that has been excluded from the selection range as a heat pipe refrigerant due to its low critical temperature, for example, carbon dioxide CO ₂ . For example, a heat pipe using carbon dioxide CO ₂ as a refrigerant cannot raise the temperature to a temperature higher than the critical temperature of the refrigerant + 31 ° C. The function as a pipe could not be fully exhibited. However, if a temperature control means such as a Peltier effect element is used in combination with the heat radiating portion, the temperature of the heat radiating portion can be increased to + 90 ° C. while the temperature of the heat pipe heat receiving portion is maintained at a low temperature of + 31 ° C. or less. Therefore, the forced air cooling capacity can be sufficiently improved.

Furthermore, the inventor of the present application has found that in a closed vessel such as a heat pipe container, the internal pressure rises due to the saturated vapor pressure of the refrigerant, and even if the refrigerant has a low boiling point such as -50 ° C., the temperature may be as high as + 30 ° C. Liquefaction easily, ie-
Attention was paid to the fact that it can be applied as a two-phase condensable working fluid for heat pipes in a wide low temperature range such as 50 to + 30 ° C. However, in this case, it is an essential condition that the container is configured to withstand the critical pressure. Furthermore, since the maximum temperature of the refrigerant working fluid is always controlled to be equal to or lower than the low critical temperature in the operating state, the temperature controller controls the temperature to -20 ° C.
It was also noted that it is easy to cool to a low temperature as described below. The basic configuration of the means for solving the problem based on these viewpoints is as follows.

The basic structure of the heat receiving and radiating structure is that a heat generating element mainly composed of a semiconductor heat generating element is used as a heat generating source (1), and the heat supplied from the heat generating source is transported to a predetermined position of the heat radiating means. A heat pipe having a function of dispersing the heat supplied from the heat radiating means to a predetermined position, diffusing the heat uniformly from the heat dissipating means to a predetermined position, and collecting and supplying heat to the heat generation source; The heat pipe has a critical temperature of + 50 ° C. or less, a critical pressure of 80 Kg / cm ² or less, a boiling point between −100 ° C. and + 50 ° C., an ozone depletion potential (ODP) of zero, and global warming. A heat pipe in which a two-phase condensable fluid having a coefficient (GWP) of 300 or less is sealed as a working fluid, and the heat pipe is connected to a heat radiating means in a good heat transfer state. The temperature is controlled without exceeding the critical temperature of the body, and the temperature of the predetermined portion is controlled to a predetermined temperature equal to or lower than the liquidus temperature of the working fluid, and a temperature control device having such a function is provided. The heat dissipating means (3), which is a heat dissipating structure, and these three elements are configured as essential components, and the heat pipe, which is a heat medium means, is a meandering thin tube that uses axial vibration of a working fluid as a main heat transfer principle. Either a heat pipe, or a normal heat pipe with the principle of heat transport based on receiving and radiating heat due to a phase change of a two-phase fluid, and a means for enhancing internal pressure resistance, or a built-in heat pipe A heat receiving and radiating structure, characterized in that it is a plate heat pipe.

[0012]

According to the present invention, the heat generating / generating source (1), the heat medium means (2), and the heat radiating means (3) provided with the temperature control device, which constitute the heat receiving / radiating structure of the present invention, interact with the conventional heat receiving / radiating structure. Exhibit unique functions that could not be demonstrated. Hereinafter, those special functions will be described. 1. Function of the calorific power source: The calorific power source is a heating element mainly composed of a semiconductor element. The calorific power source consumes electric power when operating to exhibit its respective functions as electric and electronic components. While generating heat. The amount of generated heat includes heat generated by power consumption for effective work and heat generated by unnecessary power loss. The heat generated by the power loss causes an unnecessary rise in temperature and causes various troubles. The lower the operating temperature of these electric and electronic components, the lower the heat loss. This decrease in the amount of heat loss (loss of power) greatly contributes to a reduction in power consumption of the device. 2. Function of heat medium means: function of cryogenic heat pipe applied as heat medium means: There are few heat pipes that can exhibit a good heat medium function at cryogenic temperatures, especially in recent years. Under the regulation of CFCs, it became extremely difficult to use a low-temperature refrigerant, and it was almost impossible to manufacture a low-temperature heat pipe. According to the present invention, the selection range of the conventional low-temperature refrigerant has been expanded, and it has become possible to manufacture a heat pipe having an extremely excellent heat medium function even in an extremely low temperature region. In particular, the novel refrigerant selection region of the present invention: the critical temperature is +
50 ° C. or less, critical pressure is 80 Kg / cm ² or less,
It has a boiling point between -100 ° C and + 50 ° C, its ozone depletion potential (ODP) is zero, and its global warming potential (GW)
P) is a two-phase condensable fluid of 300 or less. For example, carbon dioxide is used to expand the selection range to a region which has not been conventionally applicable as a working fluid for heat pipes. This is a revolutionary improvement in the heat transfer function of the heat pipe. 3. The effect that the critical temperature of the selected refrigerant is equal to or lower than + 50 ° C. There is a limit in the temperature difference between the upper limit and the lower limit in temperature control, and there is a great difficulty in expanding the range. Since the critical temperature is regarded as the upper limit temperature of the refrigerant temperature during operation, the lower the critical temperature, the easier it is to lower the refrigerant temperature.
For example, the control range of the Peltier effect applied temperature control is about 50 ° C. in the present technology, so that a heat pipe using a refrigerant having a critical temperature of + 30 ° C. can easily control the temperature to −20 ° C. 4. The effect that the critical pressure of the selected refrigerant is 80 kg / cm ² or less. When the heat pipe is a meandering thin tube heat pipe, the higher the saturated vapor pressure, the better the heat transport performance, and the higher the saturated vapor pressure, Production of long heat pipes becomes possible. The saturated vapor pressure of the refrigerant becomes higher as the critical pressure becomes higher. The heat pipe having the highest application effect in the heat receiving and radiating structure of the present invention is a meandering thin tube heat pipe. 5. Critical temperature is + 50 ° C and boiling point is -100 ° C to +5
The effect of being between 0 ° C.—the meandering thin tube heat pipe uses nucleate boiling as the energy source for its operation, and the critical temperature is the upper limit of the operation temperature. Critical temperature is + 50 ° C and boiling point is -1
Being between 00 ° C and + 50 ° C indicates the breadth of the operating area of the heat pipe at low temperatures. 6. Function of heat radiating means: The heat radiating means is a structure combined with a temperature control device. This temperature control device also has a function of controlling the temperature of the heat pipe, which is the heat medium means, to be lower than the critical temperature of the refrigerant. Therefore, the main purpose of the heat radiating means of the present invention is to cool the heat pipe by complementing the insufficient heat radiating ability due to the low critical temperature, which is an important function of the present invention.

[0013]

[First Embodiment] FIG. 1 is an explanatory view of a basic structure and a first embodiment of the present invention. In the figure, 1 is a heat generation source, 2 is a heat medium means, 3 is a heat radiating means, and these three means are essential components as a basic structure, and the heat medium means 2 is a heat pipe having heat transport and heat diffusion functions. Is a heat medium, and the working fluid enclosed therein has a critical temperature of +50.
° C or less, critical pressure is 80 Kg / cm ² or less, boiling point is between -100 ° C and + 50 ° C, its ozone depletion potential (ODP) is zero, and global warming potential (GWP)
Is a basic condition that the fluid is a two-phase condensable fluid of 300 or less. Further, the basic condition is that the heat pipe structure is any of a meandering thin-tube heat pipe, a normal heat pipe having a structure with reinforced internal pressure resistance, and a plate heat pipe incorporating them. A basic condition is that the heat radiating means is a heat radiating structure in which a temperature control device having a function of controlling the temperature of the heat medium means is combined. The heat receiving and radiating structure thus configured transports the heat generated by the heat generating source 1 to a predetermined place by a plate heat pipe 2 which is a heat medium means, and dissipates the heat radiating means 3.
Is uniformly diffused on the heat receiving surface, efficiently dissipates heat, and cools and holds the small heating element 1 as a heat generation source at a low temperature. The basic actions of various constituent conditions in the basic structure of the present invention are as described above. However, in the first embodiment, carbon dioxide is selected as a working fluid that completely conforms to the selected conditions, and the heat dissipation structure The water-cooled jacket plate 3-2 was selected, and a Peltier effect element integrated plate 3-1 was adopted as a temperature control device to be combined therewith. Carbon dioxide is not only completely compatible with the working fluid selection conditions, but also easily and inexpensively available on the market, suitable for practical use and mass production. A high-performance heat receiving and radiating structure, which is believed to be highly reliable due to being used in the industry as reliable data in publications, was constructed. In this embodiment, the temperature of the Peltier heat radiation surface is cooled to + 25 ° C. by water cooling, the temperature of the Peltier heat receiving surface drops to −25 ° C., and the carbon dioxide plate heat pipe 2 effectively collects this cold heat and serves as a heat generation source. A chilled amount of heat was centrally supplied, and the temperature was lowered to -23 ° C. This explanation was given in the form of cold heat supply,
This is the same as that the plate heat pipe 2 efficiently diffuses the heat generated by the heat generating source 1 and the Peltier effect element integrated plate extremely effectively radiates the heat to the cooling water in the water cooling jacket to cool the heat. Significance. The Peltier effect element integrated plate 3-1 has an advantage that temperature control by voltage and current is easy, and the size and weight can be reduced. Although the temperature difference range that can be controlled by this temperature control device is currently about 50 ° C, the performance is being improved in a competitive situation in the industry, and it is expected that the temperature control range will be significantly expanded due to remarkable progress in material development. Have been. From this fact, it is believed that the performance of the low-temperature heat pipe of this embodiment is expected to be improved more and more in the future, and that the ease of application, the expansion of the application temperature range, and the amount of applied heat are expected to increase, and that the utility value of this embodiment will increase. Can be When the heat pipe built into the heat medium means plate heat pipe 2 of the heat receiving and radiating structure is a meandering thin tube heat pipe, not only can it withstand the high pressure of the carbon dioxide working fluid due to its excellent pressure resistance performance, but also its high pressure. Supplements the pressure loss in the thin tube, works well even if the inside diameter of the thin tube is made much smaller than 1 mm, works well even if the inside diameter is made much longer than 250 mm, and the application area of the plate heat pipe It was also proved to greatly contribute to expansion, thinning and weight reduction. This is an effect comparable to the effect of lowering the temperature of the heat generation source 1 as the effect of the heat receiving and radiating structure of the present invention.

[Second Embodiment] The second embodiment is a simplified embodiment of the first embodiment. In FIG. 2, the temperature control device 3-1 in FIG. 1 is omitted, and miniaturization and simplification are achieved. A cooling water amount control device 3-3 controls the flow rate of the cooling water flowing through the water cooling jacket plate 3-2, and has the same function as the temperature control device in FIG. Forced convection water cooling has a very high cooling efficiency, so that a considerably wide temperature range can be cooled only by controlling the flow rate. In this embodiment, the cooling efficiency can be further improved by adding a water temperature control function means in addition to the flow rate control means. In this case, if the cooling water is likely to freeze, it is possible to lower the temperature to -20 ° C by using a mixed refrigerant such as methanol addition or ethanol addition. The main purpose of this embodiment is to omit an expensive Peltier effect element integrated plate as a heat radiating means and to largely reduce the price of a heat receiving / radiating structure by adopting only a simple water cooling structure. Therefore, the target temperature for lowering the temperature is + 5 ° C. to +1
It will be around 0 ° C. In such a conventional plate heat pipe, at such low temperatures, the activity of the operation was largely lost, and the heat transport ability was greatly reduced. Due to the high saturated vapor pressure of the refrigerant at low temperature, active operation performance is not lost, so that large-capacity heat transport and heat dissipation are possible. This has the effect of covering that the low temperature reaching function of this embodiment is largely lost. Also in this embodiment, the effect due to the temperature drop of the calorie generation source is not lost at all, and the temperature drop is 20 ° C. to 30 ° C. lower than the conventional calorie source temperature, so that the effect due to the temperature drop remains to a considerable extent. Will be retained.

[Third Embodiment] FIG. 3 is an explanatory view of a third embodiment of the present invention, showing an embodiment in which heat is radiated by forced convection air 3-4. The heat radiating portion 3-5 of the heat radiating means employs a combination structure of a forced convection fin group 3-5 and a Peltier effect element integrated plate 3-1. There is a drawback that the heat radiation by the forced convection air 3-4 cannot be cooled below the ambient air temperature, but the Peltier effect element requires that the temperature on the high temperature side be sufficiently high even if the temperature on the low temperature side is low. Therefore, by forcibly cooling this surface, the temperature of the low-temperature side surface can be cooled to a sufficiently low temperature. For example, when carbon dioxide is applied as the working fluid, its critical temperature is + 31 ° C., but by effectively using the Peltier effect element, the temperature of the radiator is raised to + 41 ° C. and the working fluid temperature is lowered to −9 ° C. It was easy to lower the heating element temperature to -7 ° C.

[0016]

The heat receiving and radiating structure according to the present invention has a heat generation source which is formed by a unique selection condition of the refrigerant sealed in the heat pipe as the heat medium means and the action of the heat radiating means provided with the temperature control device. It has become possible to lower the operating temperature of the heating element to an extremely low temperature, which was impossible in the past. The heating element controlled to an extremely low temperature guarantees high reliability for a long time, and the equipment provided with the heat receiving and radiating structure of the present application guarantees high safety. In particular, the embodiment in which carbon dioxide is applied as the working fluid and the temperature control device applying the Peltier effect is used in combination with the radiating means is advantageous in that the temperature control corresponding to the use of the device can be easily and reliably performed, and that the device can be configured to be lightweight and compact. Was overwhelming. In addition, it is extremely excellent in terms of little impact on the global environment and safety.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a basic structure and a first embodiment of a heat radiation structure according to the present invention.

FIG. 2 is an explanatory view of a second embodiment of the heat receiving and radiating structure of the present invention.

FIG. 3 is an explanatory view of a third embodiment of the heat radiation structure of the present invention.

[Explanation of symbols]

1 Heat generation source (small semiconductor element) 2 Heat medium means (plate heat pipe) 3-1 Temperature control device of heat radiating means (Peltier effect element integrated plate) 3-2 Heat radiating part of heat radiating means (water cooling jacket plate) 3-3 Cooling water flow control device 3-4 Forced convection air 3-5 Heat radiating section of heat radiating means (forced convection fin group) 4-1 Cooling water inlet 4-2 Cooling water outlet

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H05K 7/20 H01L 23/46 B

Claims (4)

[Claims] A heat receiving and radiating structure for controlling a heating element temperature to a predetermined temperature, comprising a heat generation source (1), a heat medium means (2), and a heat radiating means (3) as essential components. A heating element mainly composed of a semiconductor element as a heat generation source (1), and a function of transporting the heat supplied by the heat generation source to a predetermined position and uniformly diffusing and supplying the heat within a predetermined plane. A main heat medium means (2) having a function of transporting the amount of cold supplied from the heat radiating section to a predetermined portion and collecting and supplying heat to a heat generation source is defined as a main heat medium means (2). Temperature is +50
° C or less, critical pressure is 80 kg / cm ² or less, boiling point is between -100 ° C and + 50 ° C, its ozone depletion potential (ODP) is zero, and its global warming potential is 300 or less. A two-phase fluid is sealed as a working fluid, and the temperature of the heat pipe is controlled by a temperature control device so as not to exceed a critical temperature of the working fluid. A function of controlling the temperature of the calorie supply means to a predetermined temperature or lower by a heat function is also provided, and a heat radiating structure provided with such a temperature control device is configured as a heat radiating means (3). The heat pipe, which is a means, is a meandering thin tube heat pipe that mainly uses the axial vibration of the working fluid as the main heat transport principle, or uses the heat transfer principle that mainly receives and receives heat due to the phase change of the two-phase fluid and has an internal resistance. A heat receiving and radiating structure, wherein the heat receiving and radiating structure is a normal heat pipe provided with a means for enhancing pressure strength, or a heat pipe or a plate heat pipe incorporating them. 2. A heat receiving and radiating structure having three elements of a heat generating source (1), a heat medium means (2) and a heat radiating means (3) as essential components, wherein the heat generating source (1) is a small semiconductor element. A heat-generating source serving as a heating element, and a thin pressure-resistant plate heat pipe for heat diffusion incorporating a heat pipe using carbon dioxide as a working fluid is applied as a heating medium means (2);
As the heat radiating means (3), a heat radiating means constituted by combining a temperature control device composed of a Peltier effect element integrated plate and a cooling device composed of a water cooling jacket plate is applied. The heat receiving and radiating structure according to claim 1, wherein the heat radiating means is connected to and integrated with the heat radiating means in a state of good heat conductivity. 3. A peltier effect element integrated plate is omitted from the heat radiating means, and a temperature control device combined with a cooling device composed of a water cooling jacket plate includes:
The heat receiving and radiating structure according to claim 2, wherein a cooling water flow rate adjusting device attached to the water cooling jacket plate is applied. 4. A heat pipe as a heat medium means is a heat diffusion plate heat pipe having a large-area heat receiving surface and a heat radiating surface in which carbon dioxide is sealed as a working fluid,
On the heat receiving surface, a heating element having a small contact area is mounted as a heat generation source, and on the heat radiating surface, as a temperature control device of a heat radiating means, a heat receiving surface of a large area electronic cooling plate composed of a Peltier element ( A low-temperature surface) is disposed so as to be conductively connected to a surface thereof, and a heat-receiving surface of an air-cooled radiator is disposed on a heat-dissipating surface (a high-temperature surface) of the electronic cooling plate so as to be thermally connected. The temperature of the heat receiving surface of the electronic cooling plate should be such that the temperature of the heat receiving surface of the plate heat pipe does not exceed + 31 ° C.
2. The heat radiation means according to claim 1, wherein the other predetermined portion of the plate heat pipe is configured to be controlled so as to have a predetermined temperature equal to or lower than the liquidus temperature of carbon dioxide, and serves as a heat radiating means. The heat receiving and radiating structure as described in the above.