JP2002168579A - Thin looped heat pipe and temperature control apparatus comprising it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin looped heat pipe in which lowering of heat transport capacity incident to thinning of heat pipe is improved and heat transport can be controlled stably. SOLUTION: The thin looped heat pipe comprising a radiating section 4 for mounting a cooling mechanism and a heat receiving section 5 for mounting an object subjected to temperature control and arranged to circulate liquid through a channel 1 between the radiating section 4 and the heat receiving section 5 is further provided with at least one channel control valve 6 formed to exhibit a different channel resistance depending on the flowing direction of liquid, a member 3 for heating the liquid in the channel 1 disposed in correspondence with the channel control valve 6, and a thermal pump system which can regulate the heating amount and heating timing of the heating member 3 into a desired state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin loop heat pipe for transferring heat from a heat generating member to a heat radiating member to cool the heat generating member, and to a temperature control device using the same.

[0002]

2. Description of the Related Art An example of a conventional loop-shaped (also called annular) heat pipe in which a heating means is attached to a part of a flow path is disclosed in, for example, JP-A-7-286788. FIG. 21 is a schematic view showing the structure of a conventional loop heat pipe disclosed in Japanese Patent Application Laid-Open No. 7-286788. In the figure, 30a and 30b are thin pipes, 80 is a heater as a heating means, and 120 and 130 are thin and flat metal headers. As shown in the figure, in this example, a thin flow pipe is formed by welding thin pipes 30a and 30b to thin flat metal headers 120 and 130 for connection to a heat generating member and a heat radiating member, A heating means 80 such as a heater is attached to a part of the flow path. Further, the liquid is sealed in the flow path formed by the pipes 30a and 30b, and the non-condensable gas is removed.
A thin loop heat pipe is configured.

[0003] Here, for example, when the header 120 is connected to a heating member and the header 120 is heated, the header 120 is heated.
The liquid inside evaporates. At this time, if the liquid inside the flow path is intermittently heated by the heater 80, the pipe 30a,
Pressure imbalance will occur within 30b. Therefore, when the heater 80 is provided on the pipe 30b side, the pressure on the pipe 30b side increases, and the generated steam
0b flows in the direction of the pipe 30a. On the other hand, when the heating is stopped, the pressure of the pipe 30b decreases. At this time, since the inside of the pipe 30a is in a gas-liquid two-layer state, the pressure loss on the pipe 30a side becomes relatively large. For this reason,
It flows from the pipe 30a to the pipe 30b.
The liquid oscillation occurs by this repetition. Evaporation of liquid in the heating section,
In addition, heat transport performance can be obtained by liquid vibration between the heat generating portion and the heat radiating portion.

[0004]

However, such an operation is unstable with respect to external conditions such as the heating amount and the heating time of the heater 80, and the vibration and circulation of the liquid in the heat pipe are mixed. There is a problem that a state occurs and the heat transport performance is reduced. Further, if the heat transfer performance of the heat pipe is poor, the heat generating portion (that is, a portion that receives heat from a heat generating member that is a temperature control target, and is also referred to as a heat receiving portion)
A certain degree of temperature gradient occurs between the
In order to maintain the temperature of the heat generating part (that is, the heat receiving part) at a predetermined value, the heat radiation capacity of the heat radiation part must be increased. That is, there is also a problem that if the heat transport performance is poor, the heat radiating portion must be enlarged.

The present invention has been made to solve such problems of the prior art, and it is possible to improve a decrease in heat transfer capability due to a thinner heat pipe and perform stable heat transfer control. An object of the present invention is to provide a thin loop heat pipe and a temperature control device using the same. In addition, heat transport control can be performed more efficiently and at high speed,
It is an object of the present invention to provide a thin loop-shaped heat pipe capable of further reducing a temperature gradient between a heat generating part (that is, a heat receiving part) and a heat radiating part, and a temperature control device using the same.

[0006]

SUMMARY OF THE INVENTION A thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature controlled object is mounted. A thin loop heat pipe configured to circulate the liquid in the flow path between the flow path and at least one flow control valve formed so that flow resistance varies depending on a direction in which the liquid flows; One provided with at least one heating member for heating the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing to the heating member to a desired state, which are arranged corresponding to the path control valve. It is.

A thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature controlled object is mounted. A thin loop-shaped heat pipe configured to circulate the liquid in the flow path by blocking at least one passive one-way valve for flowing the liquid in a certain direction by preventing bubbles generated in the liquid; Is arranged corresponding to the target one-way valve,
The apparatus includes at least one heating member for heating the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing of the heating member to a desired state.

Further, the thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted. In a thin loop heat pipe configured to circulate liquid in a flow path, a plurality of flow path control valves formed so that flow path resistance varies depending on a direction in which the liquid flows, and a plurality of flow path control valves At least one heating member is provided corresponding to the valve and heats the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing to the heating member to a desired state. .

Further, a thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted. A plurality of passive one-way valves, wherein a plurality of passive one-way valves for flowing a liquid in a certain direction by blocking bubbles generated in the liquid in a thin loop heat pipe configured so that the liquid circulates in the flow path; A heating member for heating the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing to the heating member to a desired state. Things.

Further, the thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted, and a heat receiving portion between the heat radiating portion and the heat receiving portion. A plurality of passive one-way valves, wherein a plurality of passive one-way valves for flowing a liquid in a certain direction by blocking bubbles generated in the liquid in a thin loop heat pipe configured so that the liquid circulates in the flow path; A plurality of heating members that are arranged corresponding to the passive one-way valve and heat the liquid in the flow path, and the heating amount and heating timing can be adjusted to the desired state for each of the plurality of heating members And a simple thermal pump system.

Further, a thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which an object to be temperature-controlled is mounted, and is provided between the heat radiating portion and the heat receiving portion. In the thin loop heat pipe configured so that the liquid circulates in the flow path, a part of the flow path is formed by the first flow path and the second flow path.
And the first and second branched channels.
A plurality of passive one-way valves and a plurality of passive one-way valves are provided for each of the flow paths, which block the bubbles generated in the liquid to flow the liquid in a certain direction, and the plurality of passive one-way valves. A plurality of heating members for heating the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing to a desired state for each of the plurality of heating members. is there.

Further, the thin loop heat pipe according to the present invention is provided with fine grooves or holes for forming boiling nuclei on the flow path wall surface at a position corresponding to the heating member.

Further, the thin loop-shaped heat pipe according to the present invention is obtained by subjecting the wall surface of the flow path to a surface hydrophilic treatment.

In the thin loop heat pipe according to the present invention, the flow path is formed of a metal pipe.

Further, a temperature control device according to the present invention is a temperature control device using the thin loop heat pipe according to any one of claims 1 to 9, wherein the heat receiving portion of the thin loop heat pipe is provided. And a radiating mechanism mounted on a radiating portion of the thin loop-shaped heat pipe.

A temperature control device according to the present invention is a temperature control device using a plurality of thin loop-shaped heat pipes according to any one of claims 1 to 9 arranged in parallel. A heating mechanism for individually heating the temperature control target placed on each heat receiving portion of the thin loop heat pipe, and a heat dissipating mechanism commonly mounted on the heat dissipating portion of each thin loop heat pipe. It is a thing.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. In each of the drawings, the same reference numerals represent the same or corresponding components. Embodiment 1 FIG. FIG. 1 is a plan view schematically showing a structure of a thin loop heat pipe according to Embodiment 1 of the present invention. FIG. 2 is a sectional view taken along line YY of FIG. 1 and 2, 1 is a flow path, 2 is a bubble, 3
Is a heater which is a heating member of the thermal pump system,
Is a heat radiating section on which a cooling mechanism is closely mounted, 5 is a heat receiving section on which a heat generating member, which is a temperature control object (load side object), is closely mounted, 6 is a flow path control valve, 8 and 9 is a thin plate, 1
Reference numeral 0 denotes pattern plating, and reference numeral 11 denotes a narrow groove serving as the flow path 1.
The symbol d in FIG. 2 is the thickness of the narrow groove 11 (that is, the flow path 1). In addition, the thermal pump system can set the magnitude of the electric power supplied to each heater 3 and the supply time (supply timing) to desired states.

As shown in the drawing, the thin loop heat pipe according to the present embodiment has at least one or more heat pipes in a part of the loop (annular) flow path 1 except for the heat radiating part 4 or the heat receiving part 5. The flow path control valve 6 is provided, and the heater 3 of the thermal pump system is arranged near the flow path 1 at a position corresponding to the flow path control valve 6. That is, the heater 3 corresponds to the flow path control valve 6 provided in the flow path.
Is arranged. The flow path control valve 6 is formed on the inner surface of the flow path so that the flow path resistance varies depending on the direction in which the liquid in the flow path 1 flows. According to this structure, when the liquid in the flow path 1 is heated by the heater 3, a part of the liquid boils,
Bubbles 2 are generated. At this time, the liquid and the bubbles 2 are driven in one predetermined direction by the rapid pressure rise accompanying vaporization and the action of the flow path control valve 6. The liquid in the flow path 1 may be any liquid, such as water or alcohol, as long as it is a substance that is stable to the material forming the flow path.

According to the present embodiment, the liquid in the flow path 1 can be driven in one direction by a sudden increase in pressure accompanying vaporization, so that not only a mechanically movable part is not required, but also a thermal pump system is used. By adjusting the amount of heating to the liquid and the timing of heating, the driving conditions of the liquid can be controlled,
The ability to control the heat transport capacity of the liquid. In particular, when the thickness d of the flow path 1 is 1 mm or less, the flow resistance increases, and the heat transfer amount is more likely to decrease. However, by using this thermal pump system, the heat transfer amount can be increased. . In FIG. 1, two flow path control valves 6 and a heater 3 of a thermal pump system paired with the flow path control valve 6 are provided at upper and lower portions of the loop-shaped flow path 1. Although provided, the upper and lower heaters 3 are alternately heated by a thermal pump system, so that the liquid can be stably refluxed in a certain direction in the flow path 1.

In the present embodiment, the flow path 1 corresponds to FIG.
As shown in FIG. 1, a thin plate 8 is formed by pattern plating 10 of copper or the like to form a narrow groove 11 and a thin plate 9.
(For example, copper) is formed by bonding, but the method is not limited to this method. A pattern in which a pattern is formed on a thin plate by photoengraving and the like is bonded to the thin plate after etching, or a silicon rubber is used instead of the thin plate Alternatively, it may be formed by encapsulation using. Further, the thin plate may be formed by a method such as press molding or injection molding as well as a method of forming a narrow groove by performing cutting and electric discharge machining.

The heater 3 of the thermal pump system
As shown in FIG. 3, there is one in which an electrode film 12 is formed in a part of a narrow groove 11 serving as a flow path on the upper surface of a thin plate 8. This electrode film (that is, the heater of the thermal pump system) 1
2 is formed by being covered with an insulator. However, when the thin plate 8 is an insulator, the insulating layer may be provided only on the electrode film 12 facing the flow channel. In the thermal pump system, as shown in FIG. 3, it is better to arrange the heater 3 as a heating member so as to be in close contact with the flow path 1 as much as possible. Since the length becomes shorter, adjustment of the heating amount of the liquid becomes easier. Further, the heater of the thermal pump system may be one in which a heater wire is directly wound around a flow path.

The flow path control valve passes through the flow path control valve 6 even if it has a simple structure with a narrowed flow path without a mechanically movable part like the flow path control valve 6 shown in FIG. Since the flow path resistance varies depending on the direction of the liquid at that time, the direction of the flow of the liquid can be controlled to be constant. Needless to say, the flow path control valve may be a control valve having a mechanical movable part. However, when the thickness d of the flow path of the thin loop heat pipe is 1 mm or less, the flow path control valve having no mechanical movable part is more preferable. It is preferable in terms of reliability.
The flow path is not limited to one as shown in FIG.
As shown in (a) and (b), a plurality of flow paths, for example, three flow paths 1a, 1b, and 1c are formed in parallel to form a thin loop-shaped heat pipe 13 to increase transport capacity. It goes without saying that it can be done.

Embodiment 2 FIG. FIG. 5 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to the second embodiment. In FIG. 5, 1 is a flow path, 2 is a bubble, 3 is a heater which is a heating member of a thermal pump system, 4 is a heat radiating portion on which a cooling mechanism is mounted in close contact, and 5 is a heating member which is an object to be temperature controlled. The heat receiving section 7 on which is mounted in close contact is a passive one-way valve. Note that the same reference numerals as those in FIG. 1 of the first embodiment indicate that they are the same as or equivalent to those of the first embodiment. This embodiment is characterized in that a passive one-way valve 7 is provided in the flow path 1 instead of the flow path control valve 6 in the first embodiment.

That is, the thin loop-shaped heat pipe according to the present embodiment has a loop-shaped flow path 1 excluding the heat radiating portion 4 or the heat receiving portion 5 as shown in FIG. At least one or more passive one-way valves 7 are provided, and the heater 3 of the thermal pump system is disposed adjacent to the flow path at a position corresponding to the passive one-way valve 7. ing. The difference from the first embodiment resides in that a passive one-way valve 7 is used instead of the flow path control valve 6, and the other configuration is the same as that of the first embodiment.

FIG. 5 shows an example of the passive one-way valve 7, which has no mechanical movable part, is divided into a plurality of flow paths in a part of the flow path 1, and the divided flow paths are arranged in parallel. Is shown. The passive one-way valve 7 has a structure in which bubbles 2 generated by the thermal pump system cannot pass through the valve due to the effect of surface tension with the flow path, but liquid can pass.

FIG. 6 is a diagram for explaining the operation of the passive one-way valve 7. Referring to FIG.
Will be described. When the liquid in the flow path 1 is heated by the heater 3 of the thermal pump system arranged close to the passive one-way valve 7, the bubble 2 grows. Because of the surface tension with the passive one-way valve 7, the bubble 2 cannot grow beyond the passive one-way valve 7 and is blocked (blocked) by the passive one-way valve 7, It will grow in the direction. Then, the liquid displaced by the grown bubbles 2 proceeds in the direction of arrow A.

When the heating of the heater 3 of the thermal pump system is stopped when the bubble 2 has grown to an appropriate size, the bubble 2 flows in the flow path 1 in the direction of arrow A,
The liquid also flows back in the flow path 1 in the direction of arrow A. In FIG. 6, two passive one-way valves 7 and a heater 3 of a thermal pump system paired with the passive one-way valve 7 are provided on the upper part and the lower part of the flow path 1. However, by alternately heating the upper and lower heaters 3 by the thermal pump system, the liquid can be circulated in the flow path 1 stably in a certain direction.

As described above, the thin loop heat pipe according to the present embodiment uses a passive one-way valve having no mechanically movable part as a flow path control valve, so that it has high reliability and has a high reliability. Can be reliably controlled in a constant direction. Therefore, the heat transport amount can be further improved as compared with the case of the thin loop heat pipe according to the first embodiment using the flow path control valve.

Embodiment 3 FIG. 7 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to the third embodiment. In the figure, 1 is a flow path, 2 is a bubble, 3 is a heater as a heating member of a thermal pump system, 4 is a radiator on which a cooling mechanism is mounted in close contact, and 5 is a heating member as a temperature control target. A heat receiving unit 6 is closely mounted, 6 is a flow path control valve, and 17 is a boiling nucleus. Note that the same reference numerals as those in FIG. 1 of the first embodiment indicate that they are the same as or equivalent to those of the first embodiment. In the present embodiment, in the thin loop-shaped heat pipe according to the first embodiment shown in FIG.
Boiling nuclei 17 on the wall of flow path 1 of thin loop heat pipe
Characterized in that fine grooves or holes (both not shown) are formed.

Thus, even if the heating amount of the heater 3 of the thermal pump system attached to the thin loop heat pipe is small, the vaporization of the liquid in the flow path is promoted because the boiling nucleus 17 exists. The liquid can be driven in response to a sudden increase in pressure. Further, when boiling nuclei are present on the flow path serving as the heat receiving portion, the liquid in the flow path is vaporized even with a small amount of heat received, and the liquid can be driven. In addition, on the heat transfer surface such as the inner wall surface of the flow path, there are minute depressions due to cracks and scratches, and air is lurking in such depressions. Boiling nuclei are air bubbles generated from various sizes of depressions on the heat transfer surface, and air bubbles are easily generated from these nuclei.

In the thin loop heat pipe according to the present embodiment, fine grooves or holes for generating the boiling nuclei 17 are formed on the wall surface of the flow path 1 to generate the heater 3 of the thermal pump system and the boiling nuclei in the vicinity thereof. By appropriately adjusting the size and arrangement of the fine grooves or holes to be formed, it is possible to generate bubbles more efficiently in the flow path 1. Therefore, the amount of heat to be applied to the heater 3 in the thermal pump system can be reduced, so that the amount of heat transport can be more efficiently and quickly controlled.

Further, since the amount of heat from the thermal pump system is reduced, the heat radiation capacity on the heat radiation side can be reduced. The heater 3 is further arranged in the thin loop heat pipe according to the second embodiment shown in FIG. 5 (that is, the thin loop heat pipe using the passive one-way valve 7 instead of the flow path control valve 6). It is needless to say that a similar effect can be obtained even if a groove or a hole for forming a boiling nucleus is provided on the inner surface of the flow path 1 of the thin loop-shaped heat pipe in accordance with the position to be formed.

Embodiment 4 FIG. The thin loop heat pipe according to the present embodiment is characterized in that, in the thin loop heat pipe according to the first or second embodiment, the channel wall surface 18 of the channel 1 is further subjected to a surface hydrophilic treatment. FIG. 8 is a plan view schematically showing the structure of the thin loop heat pipe according to the fourth embodiment. For example, in the thin loop heat pipe according to the second embodiment shown in FIG. This shows a case where the channel wall surface 18 is subjected to a surface hydrophilic treatment. In the figure, 1 is a flow path, 2 is a bubble, 3 is a heater which is a heating unit of a thermal pump system, 4 is a heat radiating unit on which a cooling mechanism is mounted in close contact, and 5 is a heating member which is a temperature control target. A heat receiving unit 7 is mounted closely, 7 is a passive one-way valve, and 18 is a channel wall.

In this embodiment, the flow path wall 18 of the flow path 1
By subjecting the surface to a hydrophilic treatment, the flow path resistance becomes very small. Therefore, according to the thin loop heat pipe according to the present embodiment, the heater 3 of the thermal pump system
Even if the amount of heating is small, the liquid in the flow path can be easily driven (moved). Further, the amount of heat applied to the heater 3 of the thermal pump system is reduced, so that the capacity on the heat radiation side can be reduced. Needless to say, in the thin loop-shaped heat pipe of any of the first to third embodiments, the same effect can be obtained even if the surface of the flow channel 1 is subjected to the surface hydrophilic treatment.

Embodiment 5 FIG. FIG. 9 is a plan view schematically showing a structure of a thin loop heat pipe according to Embodiment 5 of the present invention. In FIG. 9, 1 is a flow path, 2 is a bubble, and 3 is a heating member of a thermal pump system (for example,
Heater), 4 is a radiator on which a cooling mechanism is placed in close contact,
Reference numeral 5 denotes a heat receiving unit on which a heating member to be temperature-controlled is placed in close contact, and 6 denotes a flow path control valve. In the thermal pump system, the magnitude of the power supplied to each heating member (for example, heater) 3 (that is, the amount of heat generated by the heating member) and the supply time (supply timing) can be set to desired states.

As shown in FIG. 9, the basic structure of the thin loop heat pipe according to the present embodiment is the same as that of the thin loop heat pipe according to the first embodiment, except that the heat radiating section 4 or the heat receiving section is provided. A heating member (for example, a heater) 3 of the thermal pump system is arranged near a portion of the loop-shaped flow path 1 which requires heating except for the portion 5, and each of the arranged heating members 3 is The difference is that a plurality of (two or more) flow control valves 6 are provided. That is, in the thin loop heat pipe according to the first embodiment shown in FIG.
An example in which three heating members 3 are arranged and one flow path control valve 6 is provided corresponding to each heating member 3 is shown, but the thin loop heat according to the present embodiment shown in FIG. In the pipe, for example, two heating members 3 are arranged near the flow path 1, and each heating member 3 is provided with two flow control valves 6 respectively.

In FIG. 9, two flow control valves 6 are provided for each of the arranged heating members 3 respectively, but three or more flow control valves 6 are provided for one heating member 3. The path control valve 6 may be provided, and the number of the arranged heating members 3 is not particularly limited. Further, the heating member 3 of the thermal pump system is not limited to a heater arranged in the vicinity of the flow path 1, but may be a material in which a heater wire is directly wound around the flow path 1, a material heated by a laser, or the like. Any material that can heat the liquid in the flow path 1 may be used.

As in the case of the first embodiment, the flow path control valve 6 in the present embodiment is also formed on the inner surface of the flow path so that the flow resistance varies depending on the direction in which the liquid in the flow path 1 flows. Have been. And according to this structure, the heating member 3
When the liquid in the flow path 1 is heated by this, a part of the liquid boils and bubbles 2 are generated. At this time, the liquid and the gas bubbles 2 in the flow path 1 are driven in a predetermined constant direction by the rapid pressure rise accompanying the vaporization and the action of the flow path control valve 6. Further, as described in the first embodiment, the flow path is not limited to one loop pipe as shown in FIG.
As shown in (b), a plurality of loop-shaped flow paths, for example, 3
It goes without saying that the transport capacity can be increased by forming the loop-shaped flow paths 1a, 1b, and 1c in parallel to form the aggregate 13 of the thin loop-shaped heat pipes.

As described above, according to the present embodiment, the resistance of the flow path differs depending on the direction in which the liquid flows, corresponding to each of the heating members arranged close to the flow path. Since a plurality of flow path control valves are provided, the liquid in the flow path can be driven in one direction more efficiently and stably than in the case of Embodiment 1, and the reliability is high. Highly efficient heat transport can be performed.

Embodiment 6 FIG. FIG. 10 is a plan view schematically showing the structure of the thin loop heat pipe according to the sixth embodiment. In the figure, 1 is a flow path, 2 is a bubble, 3 is a heating member (for example, a heater) of a thermal pump system, 4
Is a heat radiating section on which a cooling mechanism is closely mounted, 5 is a heat receiving section on which a heating member to be temperature controlled is mounted in close contact, 7
Is a passive one-way valve. In the thin loop heat pipe according to Embodiment 2 described above, one passive directional valve is provided for each heating member 3 arranged close to a part of the flow path 1 as shown in FIG. In the present embodiment, two heating members 3 are arranged close to a part of the flow path 1 as shown in FIG. 2 in that two (i.e., a plurality of) passive directional valves 7 are provided in the flow path 1.

As described in the second embodiment, the passive one-way valve 7 provided in the flow path 1 has no mechanical movable part, and has a plurality of flow paths in a part of the flow path 1. And the bubbles generated by the thermal pump system cannot pass through the valve due to the effect of surface tension with the flow path, but the liquid passes through the divided flow path It has a structure that can do it.

FIG. 11 is an enlarged view of a main part for explaining the operation of the passive one-way valve 7 in the thin loop heat pipe according to the present embodiment. That is, FIG.
FIG. 2 is an enlarged view of a portion where two heating members 3 and four passive one-way valves 7 corresponding to these heating members are arranged at 0. In the figure, the right side of the flow path is on the heat radiating section side,
The left side is the heat receiving unit side. In the figure, 3a and 3b are heating members, 7a and 7b are passive one-way valves provided corresponding to the heating member 3a, and 7c and 7d are passive one-way valves provided corresponding to the heating member 3b. Valve 2a is a bubble between passive one-way valves 7a and 7b and 2b is a bubble between passive one-way valves 7c and 7d.

First, as shown in FIG. 11A, when the liquid in the flow path 1 is heated by the heating member 3a of the thermal pump system arranged close to the passive one-way valve 7a, Boil, bubbles 2a are generated and grow. Because of the surface tension with the passive one-way valve 7a, the gas bubble 2a cannot grow beyond the passive one-way valve 7a, so that the bubble 2a is blocked (blocked) by the passive one-way valve 7a. It will grow in the direction of B. And
The liquid displaced by the grown bubbles 2a proceeds in the direction of arrow B. At the same time, the liquid in the flow path 1 proceeds in the direction of arrow C,
By this liquid, the bubbles 2b near the heating member 3b that are not heated are condensed and reduced.

Next, as shown in FIG.
The heating member 3a is heated until a grows to an appropriate size, and the liquid in the flow path 1 flows in the directions of the arrows B and C. Therefore, the bubbles 2b are further condensed and become smaller. When the bubble 2a has grown to an appropriate size,
The heating of the heating member 3a is stopped, and the heating of the heating member 3b is started. At this time, as shown in FIG. 11C, the unheated liquid flows in the direction of arrow A through the passive one-way valve 7a, and the bubbles 2a condense and become smaller.

On the other hand, since the bubbles 2b near the heating member 3b cannot grow beyond the passive one-way valve 7c, they are blocked by the passive one-way valve 7c and grow in the direction of arrow D. Will be. Then, the liquid displaced by the grown bubbles 2b proceeds in the direction of arrow D. Channel 1 at the same time
The liquid inside moves in the direction of arrow A, and this liquid condenses and reduces bubbles 2a near the heating member 3a that is not heated. Next, as shown in FIG. 11D, when the heating member 3b is heated until the bubble 2b grows to an appropriate size, the liquid in the flow path 1 flows in the directions of arrows A and D. Flowing. Therefore, the bubbles 2a are further condensed and become smaller. By repeating these four steps, the liquid in the flow path 1 is refluxed. However, the bubbles 2a generated by heating the heating member 3a are between the passive one-way valves 7a and 7b, and the bubbles 2b generated by heating the heating member 3b are between the passive one-way valves 7c and 7d. Air bubbles do not flow to the heat radiating part 4 or the heat receiving part 5.

FIG. 11 shows an example in which the thermal pump system is constituted by four passive one-way valves and two heating members. However, it is possible to stably return the liquid in one direction. If possible, any number of passive one-way valves and heating members may be used. In addition, as long as the shape of the valve can prevent the growth of bubbles, 1 in FIG.
The valve may be a porous body, for example, ceramic as shown at 9, or a projection on the flow path as shown at 20 in FIG.

The shape of the heating member is shown in FIG.
(A) The heater 21 has a shape crossing the flow path straight as shown in FIG.
It may be formed of an electrode film such as O. Further, the shape of the heating member may be a shape having a linear portion on the flow path as shown in the heater 22 of FIG. FIG.
As shown in the heater 23 of FIG. 4 (c), by changing the size of the heater to increase the amount of heat generated by the heater near the valve, a shape that promotes the growth of bubbles may be used. Note that, as described in the fifth embodiment, the heating member 3 of the thermal pump system is not limited to the heater arranged close to the flow path, and may be one in which a heater wire is directly wound around the flow path. Alternatively, it is needless to say that anything that can heat the liquid in the flow path, such as one heated by a laser or the like, may be used.

As described above, in the thin loop heat pipe according to the present embodiment, since the passive one-way valve having no mechanically movable portion is used as the flow path control valve, the reliability is high.
In addition, the direction in which the liquid flows can be reliably controlled in one direction, and the amount of heat transport can be improved. Furthermore, bubbles generated by heating the heating member are trapped between the passive one-way valves and do not flow to the heat receiving portion or the heat radiating portion, so that the heat transport effect is further increased. In addition, by appropriately adjusting the heating amount and the heating timing for each of the plurality of heating members by the thermal pump system, the circulation of the liquid is further efficiently promoted, and a greater heat transport effect is obtained.

Embodiment 7 FIG. FIG. 15 is a schematic diagram for explaining the structure and operation of the main part of the thin loop heat pipe according to the seventh embodiment. In the thin loop heat pipe according to the present embodiment, a part of the flow path is branched into two flow paths, and each of the two branched flow paths has the same configuration as that of the sixth embodiment. And two thermal pump systems capable of individually controlling heating are arranged. In the figure,
The right side of the flow path is the heat radiating section side, and the left side is the heat receiving section side. In the figure, 1 is a flow path, 1a and 1b are branched first and second flow paths, 3a and 3b are branched first flow paths 1a.
A heating member (for example, a heater) arranged in close proximity to
And 7b are passive one-way valves provided corresponding to the heating member 3a arranged close to the first flow path 1a, 7c
And 7d are passive one-way valves provided corresponding to the heating member 3b arranged close to the first flow path 1a.

Further, 3c and 3d are heating members (for example, heaters) arranged close to the branched second flow path 1b, and 7e and 7f are heating members arranged close to the second flow path 1b. Passive one-way valves provided corresponding to the member 3c, 7g and 7h are passive one-way valves provided corresponding to the heating member 3d disposed close to the second flow path 1b. is there. 2a is a passive one-way valve 7a and 7b
, 2b is the bubble between the passive one-way valves 7c and 7d, 2c is the bubble between the passive one-way valves 7e and 7f,
2d is a bubble between the passive one-way valves 7g and 7h.
Reference numeral 30 denotes a first thermal pump system disposed in the branched first flow path 1a, and includes heating members 3a and 3b and passive one-way valves 7a provided corresponding to the heating members 3a and 3b, respectively. 7b, 7c, 7d and the like. Reference numeral 31 denotes a second thermal pump system arranged in the branched second flow path 1b, which includes heating members 3c and 3d and passive one-way valves 7e provided corresponding to the heating members 3c and 3d, respectively. 7f, 7g, 7h and the like.

The operation of the thermal pump system for a thin loop heat pipe according to the seventh embodiment will be described with reference to FIG. First, as shown in FIG. 15 (a), the first thermal pump system arranged close to the passive one-way valve 7a splits the first thermal pump system by the heating member 3a.
When the liquid in the flow path 1a is heated, a part of the liquid boils,
A bubble 2a grows between the passive one-way valves 7a and 7b. Due to the surface tension with the passive one-way valve 7a, the bubble 2
Since a cannot grow beyond the passive one-way valve 7a, it is blocked (blocked) by the passive one-way valve 7a,
It grows in the direction of arrow B. Then, the liquid displaced by the grown bubbles 2a proceeds in the direction of arrow B. At the same time, the liquid in the first flow path 1a proceeds in the direction of arrow C, and this liquid causes the bubbles 2b between the passive one-way valves 7c and 7d near the unheated heating member 3b to condense and become small. Become.

At this time, bubbles between the passive one-way valves 7e and 7f near the unheated heating member 3c of the second thermal pump system 31 disposed in the branched second flow path 1b. 2c shows the passive one-way valve 7e
Is condensed and reduced by the liquid that has proceeded in the direction of. At the same time, when the liquid in the second flow path 1b is heated by the heating member 3d of the second thermal pump system 31 arranged close to the passive one-way valve 7g, the passive one-way valve 7g and Bubbles 2d for 7h grow. Because of the surface tension with the passive one-way valve 7g, the bubble 2d cannot grow beyond the passive one-way valve 7g.
g, and grows in the direction of arrow H.

Next, as shown in FIG. 15B, until the bubbles 2a in the first flow path 1a have grown to an appropriate size.
The heating member 3a is heated, and the liquid in the first flow path 1a flows in the directions of arrows B and C. for that reason,
The bubbles 2b are further condensed and become smaller. At this time, the second
Bubbles 2c between the passive one-way valves 7e and 7f near the unheated heater 3c in the flow path 1b are further condensed by the liquid that has moved the passive one-way valve 7e in the direction of arrow E. And become smaller. At the same time passive one-way valves 7g and 7h
The heating member 3d is heated until the bubble 2d between the two grows to an appropriate size, and the liquid in the branched second flow path 1b is
It flows in the direction of arrow H.

Next, when the bubble 2a between the passive one-way valves 7a and 7b has grown to an appropriate size, the heating member 3
The heating of a is stopped, and the heating of the heating member 3b is started. At this time, as shown in FIG. 15C, the liquid flows in the direction of arrow A through the passive one-way valve 7a of the first flow path 1a, and the bubbles 2a condense and become smaller. Since the bubble 2b cannot grow beyond the passive one-way valve 7c, it is blocked by the passive one-way valve 7c and grows in the direction of arrow D. Then, the liquid displaced by the grown bubbles 2b travels in the direction of arrow D in the first flow path 1a.
At the same time, the liquid in the first flow path 1a moves in the direction of arrow A, and the liquid causes the bubbles 2a in the vicinity of the unheated heating member 3a to condense and become smaller.

At the same time, when the bubble 2d between the passive one-way valves 7g and 7h of the second flow path 1b grows to an appropriate size, the heating of the heating member 3d is stopped and the heating member 3c is closed. Start heating. At this time, the bubble 2c cannot grow beyond the passive one-way valve 7e.
e, and grows in the direction of arrow F. For this reason, the liquid flows through the passive one-way valve 7f to the second
Flows in the direction F in the flow path 1b, and flows in the direction G through the passive one-way valve 7g, and the bubbles 2d between the passive one-way valves 7g and 7h condense and become smaller.

Next, as shown in FIG. 15D, the bubbles 2b between the passive one-way valves 7c and 7d of the second flow path 1b
The heating member 3b is heated until the liquid has grown to an appropriate size, and the liquid in the first flow path 1a flows in the direction of arrow D. Also, the bubbles 2a between the passive one-way valves 7a and 7b are further condensed and reduced by the liquid that has entered through the passive one-way valve 7a. At the same time, the second flow path 1b
The heating member 3c is heated until the bubble 2c between the passive one-way valves 7e and 7f grows to an appropriate size, and the liquid in the second flow path 1b is changed by arrows F and G. Flows in the direction. For this reason, the bubbles 2d between the passive one-way valves 7g and 7h are further condensed and reduced by the liquid entering through the passive one-way valve 7g. These four
By repeating the process, only the liquid refluxes in the flow path 1 with the bubbles trapped between the passive one-way valves.

As described above, in the thin loop heat pipe according to the present embodiment, a part of the flow path is branched into the first and second flow paths, and the operation is performed for each of the branched flow paths. The first and second thermal pump systems 30 and 31 having the same configuration as in the sixth embodiment are arranged, and the two first and second thermal pump systems 30 and 31 arranged are connected to the respective heating members. The heating amount and the timing of the heating can be appropriately adjusted. For this reason, the air bubbles generated by the heating of the heating member are confined between the passive one-way valves, and the liquid in the flow path 1 is branched into
And the second flow path alternately allows only the liquid to be constantly circulated in the flow path 1, thereby further reducing the heat transfer amount as compared with the thin loop heat pipe according to the sixth embodiment. Improvement can be achieved.

In FIG. 15, the passive one-way valve has 8
An example is shown in which a thermal pump system is configured with one and four heating members, but if the liquid can be stably refluxed in one direction, the number of passive one-way valves or heating members is Any number is acceptable. In FIG. 15, a part of the flow path 1 is branched into two flow paths, and the two flow paths have the same configuration as that of the above-described sixth embodiment, and can be individually controlled. Although an example in which a thermal pump system is arranged is shown, the flow path is branched at a plurality of locations of the flow path 1 and the thermal pump system having such a configuration is provided at each branch portion (that is, as shown in the seventh embodiment). A thermal pump system).

Embodiment 8 FIG. FIG. 16 is a plan view schematically showing a structure of a thin loop heat pipe according to the eighth embodiment. In the figure, 1 is a flow path, 2 is a bubble, 3 is a heating member (for example, a heater) of a thermal pump system,
Reference numeral 4 denotes a heat radiating section on which a cooling mechanism is mounted in close contact, 5 denotes a heat receiving section in which a heat generating member to be temperature controlled is mounted in close contact,
6 is a flow path control valve, and 17 is a boiling nucleus. In the thin loop heat pipe according to the third embodiment (see FIG. 7), one flow path control valve 6 is provided in the flow path 1 corresponding to the heating member 3 arranged close to the flow path 1. At the same time, a fine groove or hole for forming a boiling nucleus 17 is provided on the inner wall surface of the flow path 1 at a position where the heating member 3 is disposed.

On the other hand, the basic structure of the thin loop heat pipe according to the present embodiment is the same as that of the third embodiment, however, as shown in FIG.
Are provided with fine grooves or holes for forming boiling nuclei at positions where
2 in that two (plural) flow control valves 6 are provided in the flow path 1. The thin loop heat pipe according to the present embodiment adopts such a configuration, thereby promoting the vaporization of the liquid in the flow path 1 to efficiently generate bubbles, and the liquid is generated by a sudden pressure rise. Fast and
Driving can be stably performed in a desired direction, and high-speed, high-speed, and stable control of the amount of heat transport can be performed.

FIG. 16 shows a thermal pump system including two heating members 3 and four flow path control valves 6 respectively corresponding to the two heating members 3. The number of the heating members 3 and the number of the flow path control valves 6 may be any number as long as it can be circulated stably in a certain direction. In a thin loop heat pipe according to another embodiment in which a fine groove or hole for forming a boiling nucleus is not provided at a position where a heating member is disposed, a fine groove or hole for forming a boiling nucleus is provided. As a result, it goes without saying that the same effect (that is, the effect of providing a fine groove or hole for forming a boiling nucleus at the position where the heating member is disposed) is naturally produced.

Embodiment 9 FIG. 17 is a plan view schematically showing the structure of the thin loop heat pipe according to the ninth embodiment. The thin loop heat pipe according to the present embodiment is characterized in that, in the thin loop heat pipe according to the sixth embodiment shown in FIG. 10, the channel wall surface 18 of the channel 1 is subjected to a surface hydrophilic treatment. It is. Alternatively, in the thin loop heat pipe according to the fourth embodiment shown in FIG. 8, two passive one-way valves 7 are provided for each heating member 3. In the figure, 1 is a flow path, 2 is an air bubble, 3 is a heating part (for example, a heater) of a thermal pump system, 4 is a heat radiating part on which a cooling mechanism is mounted in close contact, and 5 is a temperature control object in close contact. The heat receiving portion to be mounted, 7 is a passive one-way valve, and 18 is a channel wall surface.

As described in the fourth embodiment, in the present embodiment, the flow channel resistance is extremely reduced by performing the surface hydrophilic treatment on the flow channel wall surface 18 of the flow channel 1. Further, the wetting angle and radius of curvature at the gas-liquid interface are reduced, the surface tension at the gas-liquid interface is increased, and the ability of the passive one-way valve to block air bubbles is increased. Therefore, even if the amount of heat applied to the heater 3 of the thermal pump system is small, the liquid in the flow path can be easily driven (moved). Further, as described in the eighth embodiment, the air bubbles generated by heating the heating member are confined between the passive one-way valves and do not flow to the heat receiving portion or the heat radiating portion. The transport effect is even greater. In a thin loop heat pipe according to another embodiment in which the surface of the flow channel is not subjected to the surface hydrophilic treatment, the same effect (that is, the effect of the surface hydrophilic treatment) can be obtained by applying the surface hydrophilic treatment to the flow channel wall. Needless to say).

Embodiment 10 FIG. The thin loop heat pipe according to the present embodiment is different from the thin loop heat pipe according to the first to ninth embodiments in that the flow path is not formed by a thin plate or the like but is formed by a metal tube. Features. FIG. 18 is a plan view schematically showing the structure of the thin loop heat pipe according to the tenth embodiment. For example, in the thin loop heat pipe according to the sixth embodiment shown in FIG. The case where it is constituted by a metal tube is shown. In the figure, reference numeral 1 denotes a flow path formed of a metal tube, 2 denotes a bubble, 3 denotes a heating member (for example, a heater) of a thermal pump system, 4 denotes a heat radiating unit on which a cooling mechanism is closely mounted, 5 Reference numeral denotes a heat receiving unit on which a heat generating member to be temperature-controlled is placed in close contact, and reference numeral 7 denotes a passive one-way valve.

In the present embodiment, since the flow path 1 is formed of a metal pipe having high flexibility (that is, easy to process), the length and shape of the heat pipe can be freely set. As shown in FIG. 18, a wide area of the heat radiating section 4 or the heat receiving section 5 can be cooled. In this figure, the thermal pump system is configured by using four passive one-way valves 7 and two heating members 3, but the thermal pump system is configured in parallel as in the seventh embodiment. Or the number may be further increased. In the thin loop-shaped heat pipe according to any one of the first to ninth embodiments, the flow path 1 may be entirely formed of a metal pipe, or a part thereof may be formed of a metal pipe. Needless to say, the same effect can be obtained.

Embodiment 11 FIG. FIG. 19 is a diagram illustrating a schematic configuration of a temperature control device using the thin loop-shaped heat pipe described in any of the first to tenth embodiments. In the figure, 13 is the thin loop-shaped heat pipe shown in any of the first to tenth embodiments, 4 is a heat radiating section, and 5 is a heat receiving section. Reference numeral 14 denotes a temperature control target (load-side target) placed in close contact with the heat receiving unit 5,
Reference numeral 15 denotes a heating mechanism of the temperature control object 14, and 16 denotes a heat radiating unit 4.
This is a cooling mechanism that is placed in close contact with the device.

The temperature control apparatus according to the present embodiment includes a heating amount of the thermal pump system attached to the thin loop-shaped heat pipe 13 (that is, a heating amount to the heating member 3) and its cycle (that is, heating timing). The amount of heat applied to the heating mechanism 15 and the cycle (that is, the timing of heating) are appropriately adjusted and controlled, so that the amount of heat of the heat receiving unit 5 heated by the temperature control target (load-side target) 14 is reduced. Since the heat is transported to the heat radiating section 4 at high speed by the thin loop heat pipe 13 and is cooled by the cooling mechanism 16 provided in the heat radiating section 4, the temperature control object 14 placed on the heat receiving section 5
Temperature can be controlled at high speed.

That is, in the temperature control device according to the present embodiment, the heat transfer efficiency is increased, the liquid in the heat pipe can be moved at high speed, and the cooling capacity is improved in the first to first embodiments.
0, a thin loop-shaped heat pipe 13
By using a heating mechanism (e.g., a heater) capable of heating the temperature control object 14 and increasing the temperature only by energizing, the heating and cooling of the temperature control object 15 can be performed at high speed. It is.

Embodiment 12 FIG. FIG. 20 is a diagram showing a schematic configuration of a temperature control device using a plurality (three, for example) of the thin loop-shaped heat pipes shown in any of the first to tenth embodiments arranged in parallel. . In the figure,
Reference numerals 13a, 13b and 13c denote three thin loop-shaped heat pipes arranged in parallel, respectively. Reference numeral 13 denotes a set of three thin loop-shaped heat pipes 13a, 13b and 13c. That is, three thin loop-shaped heat pipes 13a arranged in parallel with each other,
13b and 13c are configured to be separated from each other on the heat receiving unit side as shown in the figure.

Further, 14a, 14b and 14c are 3
Thin heat pipes 13a, 13b and 1
The temperature control target (load-side target) provided in each of the heat receiving units 5a, 5b, and 5c of 3c, and 15a, 15
b and 15c are load-side objects 14a and 14c, respectively.
The heating mechanisms b and 14c, and the cooling mechanism 16 provided in the heat radiating section 4 of the three thin loop heat pipes 13a, 13b and 13c. The loop of the flow path of the thin loop heat pipe 13 is a temperature control target (load-side target) 1.
Three loop-shaped flow paths are configured in parallel so as to correspond to each of 4a, 14b, and 14c, and a plurality of temperature control objects can be simultaneously cooled by one cooling mechanism.

At this time, the thin loop heat pipe 13
The heating member (eg, heater) 3 (not shown) of the thermal pump system attached to the
The cooling capacity is adjusted in accordance with each load-side object by individually arranging the thin-loop heat pipes corresponding to 13a, 13b and 13c and adjusting the drive timing of each heating member 3 individually. be able to. Further, each heating member (for example, heater) of the heating mechanisms 15a, 15b and 15c and the thermal pump system
By controlling the amount of heating and the cycle to 3 mutually,
The temperature of the temperature controlled objects 14a, 14b and 15c can be individually controlled at high speed for each object.

[0072]

The thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which an object to be temperature-controlled is mounted. In a thin loop-shaped heat pipe configured to circulate a liquid in a flow path, at least one flow path control valve formed so that flow path resistance varies depending on a direction in which the liquid flows, and corresponds to the flow path control valve. The heat pipe is provided with at least one heating member for heating the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing to the heating member to a desired state. In this way, it is possible to improve the reliability of the heat transfer and to stably control the heat transfer.

Further, the thin loop-shaped heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which an object to be temperature-controlled is mounted. A thin loop heat pipe configured to circulate the liquid in the flow path, wherein at least one passive one-way valve for flowing the liquid in a certain direction by blocking bubbles generated in the liquid; It is arranged corresponding to the one-way valve,
Since at least one heating member for heating the liquid in the flow path and a thermal pump system capable of adjusting a heating amount and a heating timing of the heating member to a desired state are provided, heat transport accompanying thinning of the heat pipe is provided. It is possible to further improve the reduction of the amount, and to achieve high reliability and stable heat transport control.

Further, the thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted. In a thin loop heat pipe configured to circulate a liquid in a flow path, a plurality of flow path control valves formed so that flow path resistance varies depending on a direction in which the liquid flows, and a plurality of flow path control valves And at least one heating member for heating the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing of the heating member to a desired state are provided. It is possible to drive the liquid in the flow channel in a fixed direction in a good and stable manner, and to perform highly efficient heat transport.

Further, the thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which an object to be temperature-controlled is mounted. In a thin loop heat pipe configured to circulate the liquid in the flow path, a plurality of passive one-way valves that allow the liquid to flow in a certain direction by blocking bubbles generated in the liquid, Since it has a heating member that is arranged corresponding to the passive one-way valve and heats the liquid in the flow path, and a thermal pump system that can adjust a heating amount and a heating timing to the heating member to a desired state, In addition, the direction in which the liquid flows can be reliably controlled in a certain direction, and bubbles generated by heating the heating member are confined between the passive one-way valves and flow to the heat receiving portion or the heat radiating portion. No heat transport Results can be further increased.

Further, the thin loop-shaped heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted. In a thin loop heat pipe configured to circulate the liquid in the flow path, a plurality of passive one-way valves that allow the liquid to flow in a certain direction by blocking bubbles generated in the liquid, A plurality of heating members that are arranged corresponding to the passive one-way valve and heat the liquid in the flow path, and the heating amount and heating timing can be adjusted to the desired state for each of the plurality of heating members And a thermal pump system, the flow direction of the liquid can be controlled in a certain direction without fail, and bubbles generated by heating the heating member are confined between the passive one-way valves, and the heat receiving portion or Flow to the radiator And not go, and, since a plurality of heating elements are arranged, can be performed more efficient heat transport.

Further, the thin loop heat pipe according to the present invention has a heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted. In the thin loop heat pipe configured to circulate the liquid in the flow path, a part of the flow path is formed by the first flow path and the second flow path.
And the first and second branched channels.
A plurality of passive one-way valves and a plurality of passive one-way valves are provided for each of the flow paths, which block the bubbles generated in the liquid to flow the liquid in a certain direction, and the plurality of passive one-way valves. Since a plurality of heating members for heating the liquid in the flow path, and a thermal pump system capable of adjusting the heating amount and heating timing to a desired state for each of the plurality of heating members, The direction in which the liquid flows can be reliably controlled in a fixed direction, and bubbles generated by heating the heating member are confined between the passive one-way valves, and the first and second flow paths are branched. By alternately passing through the passages, only the liquid can always be circulated in the flow passage, and very high-speed and highly efficient heat transport can be performed.

In the thin loop heat pipe according to the present invention, fine grooves or holes for forming boiling nuclei are provided on the flow path wall surface at positions corresponding to the heating member. Evaporation of the liquid is promoted, so that bubbles can be efficiently generated, and heat transfer can be performed more efficiently and at high speed.

Further, in the thin loop heat pipe according to the present invention, since the surface of the flow channel is subjected to the surface hydrophilic treatment, the liquid can be easily moved in the flow channel, and the heat can be transported more efficiently. .

Further, in the thin loop heat pipe according to the present invention, since the flow path is made of a metal pipe, the length and shape of the heat pipe can be freely set, and the heat radiating portion or the heat receiving portion can be used. A wider area of the part can be cooled.

Further, a temperature control device according to the present invention is a temperature control device using the thin loop-shaped heat pipe according to any one of claims 1 to 9, wherein the temperature control device is provided in a heat receiving portion of the thin loop heat pipe. A heating mechanism for heating the mounted temperature control target and a heat radiating mechanism mounted on the heat radiating section of the thin loop-shaped heat pipe are provided, so that the heat receiving section is controlled by controlling the thermal pump system and the heating mechanism. The temperature of the temperature control target placed on the device can be controlled at high speed.

A temperature control device according to the present invention is a temperature control device using a plurality of thin loop-shaped heat pipes according to any one of claims 1 to 9 arranged in parallel. A heating mechanism for individually heating the temperature control target placed on each heat receiving portion of the thin loop heat pipe, and a heat dissipating mechanism commonly mounted on the heat dissipating portion of each thin loop heat pipe were provided. Therefore, by controlling the thermal pump system and the heating mechanism, it is possible to control the temperature of a plurality of temperature control objects individually at high speed.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to a first embodiment.

FIG. 2 is a sectional view taken along line YY of FIG.

FIG. 3 is a diagram for explaining a modification of the heater of the thermal pump system.

FIG. 4 is a view for explaining a modification of the thin loop heat pipe according to the first embodiment.

FIG. 5 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to a second embodiment.

FIG. 6 is a diagram for explaining the operation of the passive one-way valve of the thin loop heat pipe according to the second embodiment.

FIG. 7 is a plan view schematically showing a structure of a thin loop heat pipe according to a third embodiment.

FIG. 8 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to a fourth embodiment.

FIG. 9 is a plan view schematically showing a structure of a thin loop heat pipe according to a fifth embodiment.

FIG. 10 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to a sixth embodiment.

FIG. 11 is an enlarged view of a main part for describing the operation of the thin loop heat pipe according to the sixth embodiment.

FIG. 12 is a view for explaining a modification of the passive one-way valve of the thin loop heat pipe according to the sixth embodiment.

FIG. 13 is a view for explaining a modification of the passive one-way valve of the thin loop heat pipe according to the sixth embodiment.

FIG. 14 is a schematic diagram for explaining a configuration example of a heating member of the thin loop heat pipe according to the sixth embodiment.

FIG. 15 is a schematic diagram for explaining the structure and operation of a main part of a thin loop heat pipe according to a seventh embodiment.

FIG. 16 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to an eighth embodiment.

FIG. 17 is a plan view schematically showing a structure of a thin loop-shaped heat pipe according to a ninth embodiment.

FIG. 18 is a plan view schematically showing a structure of a thin loop heat pipe according to a tenth embodiment.

FIG. 19 is a diagram illustrating a schematic configuration of a temperature control device according to an eleventh embodiment.

FIG. 20 is a diagram showing a schematic configuration of a temperature control device according to a twelfth embodiment.

FIG. 21 is a view schematically showing the structure of a conventional loop heat pipe.

[Explanation of symbols]

1 flow path 1a first flow path 1b
Second flow path 2, 2a, 2b, 2c, 2d Bubble 3, 3a, 3b, 3c, 3d Heating member 4 Heat radiating unit 5 Heat receiving unit 6
Flow control valve 7 Passive one-way valve 7a, 7b, 7c, 7d, 7e, 7f, 7g, 7h Passive one-way valve 8, 9 Thin plate 10 Pattern plating 11
Groove 12 Electrode film 13 Aggregate of thin loop-shaped heat pipes 13a, 13b, 13c Thin loop-shaped heat pipes 14, 14a, 14b, 14c Temperature control target (load-side target) 15, 15a, 15b, 15c Heating mechanism 16 Cooling mechanism 17 Boiling nucleus 18
Flow path wall surface 19, 20 Example of valve shape of passive one-way valve 21, 22, 23 Example of shape of heating member 30 First thermal pump system 31 Second thermal pump system

Continued on the front page (72) Inventor Tetsuro Ogushi 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Inventor Toshiyuki Umemoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Co., Ltd. In company

Claims (11)

[Claims] 1. A heat radiating part on which a cooling mechanism is mounted and a heat receiving part on which a temperature control object is mounted, and a liquid circulates in a flow path between the heat radiating part and the heat receiving part. In the thin loop heat pipe configured as described above, at least one flow path control valve formed so that the flow path resistance varies depending on the direction in which the liquid flows, At least one of which heats the liquid inside
A thin loop heat pipe comprising: one heating member; and a thermal pump system capable of adjusting a heating amount and a heating timing of the heating member to a desired state. 2. A heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted, and a liquid circulates in a flow path between the heat radiating portion and the heat receiving portion. In the thin loop heat pipe configured as described above, at least one passive one-way valve that flows the liquid in a certain direction by blocking bubbles generated in the liquid, and the passive one-way valve corresponds to the passive one-way valve. Characterized by comprising at least one heating member arranged to heat the liquid in the flow path, and a thermal pump system capable of adjusting a heating amount and a heating timing of the heating member to a desired state. Loop heat pipe. 3. A heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control target is mounted, and a liquid circulates in a flow path between the heat radiating portion and the heat receiving portion. In the thin loop heat pipe configured as described above, a plurality of flow path control valves formed so that the flow path resistance is different depending on the direction in which the liquid flows, and a plurality of the flow path control valves are disposed corresponding to the plurality of flow path control valves, A thin loop heat pipe comprising: at least one heating member for heating a liquid in a flow path; and a thermal pump system capable of adjusting a heating amount and a heating timing of the heating member to a desired state. . 4. A heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control target is mounted, and a liquid circulates in a flow path between the heat radiating portion and the heat receiving portion. In the thin loop-shaped heat pipe configured as above, a plurality of passive one-way valves and a plurality of the passive one-way valves that flow the liquid in a certain direction by blocking bubbles generated in the liquid are provided. A thin loop comprising: a heating member that is disposed correspondingly to heat the liquid in the flow path; and a thermal pump system that can adjust a heating amount and a heating timing of the heating member to a desired state. Heat pipe. 5. A heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control object is mounted, and a liquid circulates in a flow path between the heat radiating portion and the heat receiving portion. In the thin loop-shaped heat pipe configured as above, a plurality of passive one-way valves and a plurality of the passive one-way valves that flow the liquid in a certain direction by blocking bubbles generated in the liquid are provided. A plurality of heating members that are arranged correspondingly to heat the liquid in the flow path, and a thermal pump system that can adjust a heating amount and a heating timing to a desired state for each of the plurality of heating members. A thin loop heat pipe comprising: 6. A heat radiating portion on which a cooling mechanism is mounted and a heat receiving portion on which a temperature control target is mounted, and a liquid circulates in a flow path between the heat radiating portion and the heat receiving portion. In the thin loop heat pipe configured as described above, a part of the flow path is branched into a first flow path and a second flow path, and each of the branched first and second flow paths is On the other hand, a plurality of passive one-way valves that allow the liquid to flow in a certain direction by blocking bubbles generated in the liquid, A thin loop comprising: a plurality of heating members for heating the liquid; and a thermal pump system capable of adjusting a heating amount and a heating timing to a desired state for each of the plurality of heating members. Heat pipe. 7. A thin loop according to claim 1, wherein fine grooves or holes for forming boiling nuclei are provided on the flow path wall surface at positions corresponding to the heating member. heat pipe. 8. The thin loop-shaped heat pipe according to claim 1, wherein the channel wall surface is subjected to a surface hydrophilic treatment. 9. The thin loop heat pipe according to claim 1, wherein the flow path is formed of a metal pipe. 10. A temperature control device using the thin loop-shaped heat pipe according to claim 1, wherein the temperature control object is mounted on a heat receiving section of the thin loop-shaped heat pipe. A temperature control device, comprising: a heating mechanism for heating an object; and a heat radiating mechanism mounted on a heat radiating portion of the thin loop heat pipe. 11. A temperature control device using a plurality of the thin loop-shaped heat pipes according to claim 1 arranged in parallel, wherein each of the thin loop-shaped heat pipes receives heat. Temperature control characterized by comprising a heating mechanism for individually heating a temperature control object mounted on the section, and a heat radiation mechanism commonly mounted on a heat radiation section of each of the thin loop heat pipes. machine.