JP2023024066A - Heat transport body - Google Patents

Abstract

To provide a heat transport body which can achieve excellent cooling characteristics to multiple heating elements having different heat values and heat resistance even if the heating elements are thermally connected to the heat transport body.SOLUTION: A heat transport body includes: a container in which a cavity is formed and which is thermally connected to heating elements; a working fluid enclosed in the cavity part; and a wick structure in which the working fluid in a liquid phase circulates and which is provided at the cavity part; and a steam flow passage in which the working fluid in a gas phase circulates and which is provided at the cavity part. The container has: a first portion in which a dimension of the steam flow passage as seen in a direction orthogonal to a heat transport direction of the heat transport body has a first thickness; and a second portion which has a recessed part recessed in a direction of the cavity part to cause the dimension of the steam flow passage as seen in the direction orthogonal to the heat transport direction of the heat transport body to have a second thickness, which is one-half of the first thickness or thinner, and is provided at an intermediate part in the heat transport direction of the heat transport body.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a heat transporter having excellent cooling characteristics for each heat generating element even when a plurality of heat generating elements having different heat generation amounts are thermally connected.

2. Description of the Related Art Electronic parts such as semiconductor elements mounted in electrical and electronic equipment generate more heat as their functions become more advanced, and in recent years, cooling thereof has become more important. In addition, due to the miniaturization of electronic devices, heat-generating bodies such as electronic components are often mounted on substrates at high density, and a plurality of electronic components are arranged in a narrow space. 2. Description of the Related Art Vapor chambers (planar heat pipes) provided with flat containers and heat pipes provided with tubular containers are sometimes used as methods for cooling heat-generating bodies such as electronic components arranged in narrow spaces.

As a heat transporter for cooling high-heat-generating electronic components such as a central processing unit placed in a narrow space, a housing and pillars arranged in the internal space of the housing so as to support the housing from the inside. , a working fluid enclosed in the internal space of the housing, and a wick structure disposed in the internal space of the housing, wherein a portion of the main inner surface of the housing is exposed to the internal space of the housing. , a vapor chamber having pores with an average depth of 10 nm or more has been proposed (Patent Document 1). In the heat transporter of Patent Document 1, pores are provided on the main inner surface of the housing to reduce the amount of impurity gas trapped by the wick structure, thereby improving the heat transport properties of the heat transporter. be. The pillars of Cited Document 1 are provided in order to obtain good heat transport characteristics by supporting the internal space of the housing from the inside and securing a vapor flow path through which vapor-phase working fluid flows.

On the other hand, when a plurality of electronic components or the like are arranged in a narrow space, a single heat transporter may cool the plurality of electronic components or the like. However, since the amount of heat generated by an electronic component or the like varies depending on its function or the like, a plurality of electronic components or the like that are thermally connected to one heat transporter may differ in the amount of heat generated. When a plurality of electronic components with different calorific values are thermally connected to one heat transporter, the vapor-phase working fluid circulates throughout the container of the heat transporter, causing the electronic components with high calorific value to In some cases, heat is transferred to an electronic component or the like with a low calorific value, and the cooling characteristics for the electronic component or the like with a low calorific value deteriorates. In addition, since the heat resistance of electronic components and the like varies depending on their functions, etc., the heat resistance of a plurality of electronic components and the like thermally connected to one heat transporter may differ. When a plurality of electronic components with different heat resistance are thermally connected to one heat transporter, the vapor-phase working fluid circulates throughout the container of the heat transporter, thereby connecting electronic components with high heat resistance. In some cases, heat is transferred to and from electronic components with low heat resistance, and the cooling characteristics for electronic components with low heat resistance deteriorate, resulting in a shortened operating life.

Therefore, in some cases, a separate heat transporter is thermally connected to each of a plurality of electronic components and the like having different heat generation amounts and heat resistances to cool the plurality of electronic components and the like. However, in the case of a plurality of electronic components arranged in a narrow space, it is difficult to thermally connect a different heat transporter to each electronic component, etc., and it is necessary to prepare a plurality of heat transporters. In some respects, there is the problem that the cost increases and the installation work of the heat transporter becomes complicated.

In addition, since the amount of heat generated by electronic components, etc., may fluctuate during operation, the optimum amount of working fluid should be determined for the heat transporter, taking into account the range of fluctuations in the amount of heat generated by the electronic components, etc., that are thermally connected. is enclosed. Therefore, when a plurality of electronic components or the like are thermally connected to one heat transporter, the heat transporter has a An optimum amount of working fluid may be enclosed. However, there is still room for improvement in terms of improving the cooling characteristics for a plurality of electronic components and the like when the amount of working fluid that is optimal for the amount of heat generated by any one of the heat transporters is enclosed in the heat transporter.

JP 2018-189349 A

In view of the above circumstances, it is an object of the present invention to provide a heat transporter capable of exhibiting excellent cooling characteristics for each heat generating element even when a plurality of heat generating elements having different calorific value and heat resistance are thermally connected. With the goal.

The gist of the configuration of the present invention is as follows.
[1] A container thermally connected to a heating element having a cavity formed therein; a working fluid enclosed in the cavity; and a vapor flow path provided in the cavity through which the vapor-phase working fluid flows, wherein
the container is
a first portion having a first thickness in a dimension of the steam channel in a direction perpendicular to the heat transport direction of the heat transporter;
By having the concave portion recessed in the direction of the hollow portion, the dimension of the steam channel in the direction orthogonal to the heat transport direction of the heat transporter is half or less than the first thickness. a second portion having a second thickness and provided at an intermediate portion in the heat transport direction of the heat transporter;
A heat transporter having
[2] The heat transporter according to [1], wherein the steam channel is closed at the second portion, and the steam channel is divided into a plurality of independent steam channel portions.
[3] The heat transporter according to [1], wherein the second thickness of the steam channel is more than 0 mm and 0.15 mm or less.
[4] The heat transporter according to any one of [1] to [3], wherein the dimension of the second portion in the direction parallel to the heat transport direction is 0.05 mm or more and 5 mm or less.
[5] The heat transporter according to any one of [1] to [4], wherein the wick structure continuously extends from the first portion to the second portion.
[6] The container has a first surface having a planar portion and a second surface having a planar portion opposed to the first surface, and the first surface is the planar portion The heat transporter according to any one of [1] to [5], wherein the container has the recessed portion by having the recessed portion recessed toward the cavity portion.
[7] The heat transporter according to [6], wherein the wick structure is provided on the inner surface of the second surface.
[8] The container is formed of one plate-shaped body and the other plate-shaped body facing the one plate-shaped body, and the one plate-shaped body defines the recess recessed toward the cavity. The heat transporter according to any one of [1] to [7].
[9] The heat transporter according to any one of [6] to [8], which is a vapor chamber.
[10] The container is a tubular body in which the end surface of one end and the end surface of the other end are sealed; The heat transporter according to any one of [1] to [5], in which the container has the concave portion.
[11] The heat transporter according to [10], wherein the wick structure is provided on the inner peripheral surface of the container.
[12] The heat transporter according to [10] or [11], wherein the heat transporter is a heat pipe.
[13] The heat transporter according to any one of [1] to [12], wherein the container has a stepped portion formed in the thickness direction at the second portion.
[14] The heat transporter according to any one of [1] to [13], wherein the first portion has a heat receiving portion that is thermally connected to the heating element.

In the above aspect [1], the container includes a first portion having a first thickness in the dimension of the steam flow path in the direction orthogonal to the heat transport direction of the heat transporter, and a recess recessed toward the cavity portion. , the dimension of the steam channel in the direction perpendicular to the heat transport direction of the heat transporter has a second thickness that is half or less than the first thickness, and the heat transport and a second portion provided at an intermediate portion in the heat transport direction of the body. Therefore, in the first portion, the gas-phase working fluid smoothly flows in the heat transport direction of the heat transport body, and the heat is transported. At the second portion provided in the middle portion of the body in the heat transport direction, the dimension in the thickness direction of the vapor channel is reduced, and the flow of the vapor phase working fluid in the heat transport direction of the heat transporter is restricted. there is

In addition, in the above aspect [1], since the heat transporter has the second portion in the middle portion in the heat transport direction, the plurality of first portions are connected via the second portion.

According to the aspect of the heat transporter of the present invention, while the gaseous working fluid smoothly flows in the heat transport direction of the heat transporter in the first portion of the container, the second portion provided in the intermediate portion of the container Since the flow of the gaseous working fluid in the heat transport direction of the heat transporter is restricted at the portion, even if the heating element is thermally connected to each of the plurality of first portions that are connected to each other, the first portion The second portion restricts the flow of the vapor-phase working fluid between the first portions. Therefore, in the heat transporter of the present invention, since heat transport between the first parts is restricted, heat generators having different heat generation amounts and heat resistances are thermally connected to each of the plurality of first parts. Even so, excellent cooling characteristics can be exhibited for each heating element. Further, according to the aspect of the heat transporter of the present invention, since the flow of the gas-phase working fluid between the first portions is restricted at the second portion, each of the plurality of first portions The amount of working fluid can be optimized for the thermally connected heat generating elements, and excellent cooling characteristics can be exhibited for each heat generating element.

According to the aspect of the heat transporter of the present invention, the steam channel is blocked at the second portion, and the steam channel is divided into a plurality of independent steam channel portions, thereby Since the vapor-phase working fluid is prevented from flowing between the portions, the heating elements thermally connected to each of the plurality of first portions can exhibit even better cooling characteristics.

According to the aspect of the heat transporter of the present invention, since the second thickness of the vapor channel is 0.15 mm or less, the flow of the vapor-phase working fluid between the first portions is more reliably restricted. Therefore, it is possible to exhibit even better cooling characteristics for the heating elements that are thermally connected to each of the plurality of first portions.

According to the aspect of the heat transporter of the present invention, the dimension in the direction parallel to the heat transport direction of the second portion is 0.05 mm or more and 5 mm or less, so that the gas phase operation between the first portions Fluid circulation is more reliably prevented.

According to the aspect of the heat transporter of the present invention, the wick structure continuously extends from the first portion to the second portion, whereby the vapor-phase working fluid between the first portions While the flow of the liquid phase working fluid is restricted at the second portion, the liquid-phase working fluid can flow more smoothly between the first portion and the second portion. The amount of working fluid can be more reliably optimized for the heating element connected to.

According to the aspect of the heat transporter of the present invention, the container is thermally connected to each of the plurality of first portions by having the stepped portion formed in the second portion in the thickness direction. Even if the heights of the heating elements are different, the thermal connectivity to the plurality of heating elements can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is side sectional drawing explaining the outline|summary of the internal structure of the heat transporter which concerns on the 1st Embodiment of this invention. 1 is a plan view of a heat transporter according to a first embodiment of the present invention; FIG. FIG. 5 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to a second embodiment of the present invention; FIG. 11 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to a third embodiment of the present invention; FIG. 11 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to a fourth embodiment of the present invention; FIG. 11 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to a fifth embodiment of the present invention; FIG. 11 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to a sixth embodiment of the present invention; FIG. 21 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to a seventh embodiment of the present invention; FIG. 21 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to an eighth embodiment of the present invention; FIG. 21 is a side cross-sectional view illustrating the outline of the internal structure of a heat transporter according to a ninth embodiment of the present invention; FIG. 20 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the tenth embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS It is side surface sectional drawing explaining the outline|summary of the manufacturing method of the heat transport body based on the 1st Embodiment of this invention.

A heat transporter according to a first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side cross-sectional view illustrating the outline of the internal structure of the heat transporter according to the first embodiment of the present invention. FIG. 2 is a plan view of the heat transporter according to the first embodiment of the invention.

As shown in FIG. 1, a heat transporter 1 according to the first embodiment of the present invention includes a container 10 having a hollow portion 13 formed therein and thermally connected to a heating element 100; a wick structure 14 provided in the cavity 13 through which the working fluid enclosed in the liquid-phase working fluid L flows; and a vapor flow provided in the cavity 13 through which the gaseous-phase working fluid G flows. a path 15;

The container 10 is formed of two opposing plate-like bodies, that is, one plate-like body 11 and the other plate-like body 12 facing the one plate-like body 11 . A hollow portion 13 is formed inside the container 10 by stacking one plate-like body 11 and the other plate-like body 12 . Further, the container 10 is a thin plate-shaped container, that is, a flat container, and one plate-shaped body 11 has a first surface 21 which is a first main surface, and the other plate-shaped body 12 has a It has a second face 22 which is a second major surface. Accordingly, the container 10 has a first surface 21 , which is a first major surface, and a second surface 22 , which is a second major surface, opposite the first surface 21 . From the above, the heat transporter 1 is a vapor chamber.

A side wall 25 is erected along the periphery of the first surface 21 of one plate-like body 11 . A hollow portion 13, which is the internal space of the container 10, is formed by arranging the tip of the side wall 25 of one of the plate-like bodies 11 so as to face the peripheral edge of the inner surface 23 of the second surface 22 and abut and join them. The side walls 25 thus form the sides of the container 10 . The cavity 13 is a closed space and is decompressed by degassing.

As shown in FIG. 1, in the container 10 of the heat transporter 1, the dimension of the steam channel 15 in the direction T perpendicular to the heat transport direction D in the side view of the heat transporter 1 is the first thickness. By having the portion 51 of 1 and the concave portion 16 recessed in the direction of the hollow portion 13 , the dimension of the steam flow path 15 in the direction T perpendicular to the heat transport direction D of the heat transporter 1 is 1 with the first thickness. and a second portion 52 having a second thickness that is less than or equal to /2. The second portion 52 is provided in the intermediate portion of the heat transporter 1 in the heat transport direction D of the container 10 . Also, the second portion 52 extends across the entire width of the hollow portion 13 .

The first surface 21 of one plate-like body 11 has a flat planar portion 32 and a concave portion 31 recessed from the planar portion 32 toward the hollow portion 13 , that is, inward. The number of concave portions 31 to be provided can be appropriately selected depending on the conditions of use of the heat transporter 1 and the like, and the heat transporter 1 is provided with one concave portion 31 . Further, the side surface of the concave portion 31 is formed vertically from the inner surface of the planar portion 32 . On the other hand, the second surface 22 of the other plate-like body 12 does not have a concave portion, and the entire second surface 22 is a flat planar portion. Since the first surface 21 has a plane portion 32 and a recess portion 31 recessed from the plane portion 32 toward the cavity portion 13 , the container 10 is recessed from the plane portion 17 and from the plane portion 17 toward the cavity portion 13 . It has a recess 16 . That is, one plate-like body 11 has a recessed portion 16 that is recessed toward the hollow portion 13 . From the above, the flat portion 17 corresponds to the first portion 51 and the recessed portion 16 corresponds to the second portion 52 . In the heat transporter 1 , one concave portion 31 is provided on the first surface 21 , so that the container 10 has one concave portion 16 and thus one second portion 52 . ing. The second portion 52 of the first surface 21 is a curved surface, the central portion of which is a substantially flat surface, and the edge portion of which is a curved surface or a substantially flat surface. In FIG. 1, the second portion 52 of the first surface 21 is a flat surface.

The container 10 has one recess 16 on the first side 21 and no recesses on the second side 22 . From the above, the flat portion 17 and the recessed portion 16 of the container 10 are integrally molded. Further, the side surface of the concave portion 16 protrudes vertically from the inner surface of the flat portion 17 .

As shown in FIG. 1 , in the heat transporter 1 , a wick structure 14 is provided in the cavity 13 . The wick structure 14 is a member having capillary force and extends from one end of the container 10 to the other end along the main surface of the container 10 . In the heat transporter 1 , the wick structure 14 is provided over substantially the entire inner surface of the second surface 22 . Note that the heat transporter 1 is not provided with a wick structure on the first surface 21 .

Regarding the dimension of the steam channel 15 in the direction T perpendicular to the heat transport direction D of the heat transporter 1, the second thickness of the steam channel 15 at the second portion 52 is the same as the steam channel at the first portion 51. Although it is not particularly limited as long as it is 1/2 or less of the first thickness of 15, the second thickness of the steam flow path 15 at the second portion 52 is preferably as small as possible. The second thickness is preferably 1/3 or less, particularly preferably 1/4 or less, of the first thickness of the steam passage 15 . In the heat transporter 1 , the tip of the recess 16 is in contact with the wick structure 14 at the second portion 52 of the container 10 . From the above, the second thickness of the steam channel 15 at the second portion 52 is 0 mm, and the steam channel 15 is not formed at the second portion 52 . Therefore, in the second portion 52 of the container 10, the steam flow path 15 is closed, and the steam flow path 15 is divided into a plurality of (two in the heat transporter 1) independent steam flow path sections 15-1 and 15-2. is divided into In the vapor channel 15 of the heat transporter 1, the vapor channel portion 15-1 does not communicate with the vapor channel portion 15-2, and the vapor-phase working fluid G flowing through the vapor channel portion 15-1 is , and the vapor-phase working fluid G flowing through the vapor flow path portion 15-2 cannot flow to the vapor flow path portion 15-1.

In the heat transporter 1, the steam channel 15 is divided into a plurality of (two in the heat transporter 1) independent steam channel portions 15-1 and 15-2. 51 has a plurality of (two in the heat transporter 1) independent internal spaces via second parts 52, and a plurality of (two in the heat transporter 1) first parts 51 are connected to the first part 51. 2 are connected via a portion 52 .

In the first portion 51 having the steam channel portion 15-1, the vapor-phase working fluid G smoothly flows through the steam channel portion 15-1 of the steam channel 15 in the heat transport direction D of the heat transporter 1. can. Further, in the first portion 51 having the vapor flow path portion 15-2, the vapor-phase working fluid G smoothly flows through the vapor flow path portion 15-2 of the vapor flow path 15 in the heat transport direction D of the heat transporter 1. can be distributed to On the other hand, in the second portion 52 , the dimension in the thickness direction of the vapor flow path 15 is reduced, and the flow of the vapor-phase working fluid G in the heat transport direction D of the heat transporter 1 is restricted.

On the other hand, the wick structure 14 extends continuously from the plurality of first parts 51 to the second parts 52 . As described above, the liquid-phase working fluid L can circulate throughout the cavity 13 by circulating inside the wick structure 14 . Therefore, the liquid-phase working fluid L flows from the first portion 51 having the vapor passage portion 15-1 to the vapor passage portion 15-2 via the second portion 52 by the capillary force of the wick structure 14. Also, from the first portion 51 having the steam passage portion 15-2 to the first portion 51 having the steam passage portion 15-1 via the second portion 52 can be distributed.

The dimension of the second portion 52 in the direction parallel to the heat transport direction D is not particularly limited, but the lower limit is From the viewpoint of prevention, 0.05 mm is preferable, and 0.1 mm is particularly preferable. On the other hand, the upper limit of the dimension of the second portion 52 in the direction parallel to the heat transport direction D is set so that the vapor flow path 15 of the heat transporter 1 as a whole is sufficiently secured and the vapor-phase working fluid G flows. 5 mm is preferable, and 3 mm is particularly preferable, from the viewpoint of improving the characteristics and obtaining excellent cooling characteristics more reliably.

As shown in FIG. 2, in the heat transporter 1, the shape of the container 10 in a plan view (when viewed from the vertical direction with respect to the plane portion 17 of the container 10) is a square. Corresponding to the square shape of the container 10 in plan view, the hollow portion 13 also has a square shape in plan view. Also, the second portion 52 extends across the entire width of the hollow portion 13 . Note that the shape of the container 10 in a plan view is not particularly limited, and may be a polygonal shape other than a square shape, a circular shape, an elliptical shape, a shape having a straight portion and a curved portion, etc., depending on the conditions of use of the heat transporter 1. It can be selected as appropriate.

The material of the container 10 is not particularly limited, and examples thereof include metals such as copper and copper alloys from the viewpoint of excellent thermal conductivity, aluminum and aluminum alloys from the viewpoint of lightness, and stainless steel from the viewpoint of improvement in mechanical strength. be able to. Further, tin, tin alloys, titanium, titanium alloys, nickel, nickel alloys, or the like may be used as the material of the container 10 depending on the usage conditions of the heat transporter 1 .

The thickness of the heat transporter 1 can be, for example, 0.1 mm or more and 1.0 mm or less. The thickness of one plate-like body 11 and the thickness of the other plate-like body 12 may be the same or different. have approximately the same thickness. In the heat transporter 1 , the thickness of one plate-like body 11 is substantially uniform over the entire one plate-like body 11 . Also, the thickness of the other plate-like body 12 is substantially uniform over the entirety of the other plate-like body 12 . The thickness of one plate-like body 11 and the thickness of the other plate-like body 12 can be, for example, 0.03 mm.

In addition, the container 10, which is an airtight container, is formed by joining the periphery of one plate-shaped body 11 and the periphery of the other plate-shaped body 12 in contact with each other, and the cavity 13 is sealed. be stopped. The method of joining the peripheral portion is not particularly limited, and examples thereof include diffusion joining, brazing, laser welding using a fiber laser or the like, ultrasonic welding, friction joining, pressure welding, and the like.

Further, the working fluid enclosed in the cavity 13 of the container 10 can be appropriately selected according to the material of the container 10, and examples thereof include water, CFC alternatives, perfluorocarbons, cyclopentane, ethylene glycol, and the like. can be done. These may be used alone or in combination of two or more.

Examples of the member of the wick structure 14 include a powder sintered body containing metal powder, a mesh made of metal fine wires, a metal braid, a nonwoven fabric, a metal wire, and grooves (thin grooves) formed on the inner surface of the container 10 . etc.

Next, an example of how to use the heat transporter 1 according to the first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1 , a heating element 100 to be cooled is thermally connected to the first portion 51 of the outer surface of the container 10 . Specifically, the heating element 100 is thermally connected to the outer surface of the second surface 22 of the first portion 51 on which the wick structure 14 is provided. As described above, the first portion 51 has a heat receiving portion that is thermally connected to the heating element 100 .

The heat transporter 1 cools, for example, a plurality of heating elements 100 mounted on a substrate (not shown). In the heat transporter 1 , one heating element 100 is thermally connected to one first portion 51 . Accordingly, in the heat transporter 1, the two heat generators 100-1 and 100-2 are thermally connected to the container 10 corresponding to the two first portions 51 provided. Examples of the heating element 100 include a semiconductor component such as a central processing unit.

Next, operation of the heat transporter 1 according to the first embodiment of the present invention will be described. A heating element 100-1 is thermally connected to the outer surface of the first portion 51 of the container 10 having the steam passage portion 15-1. Of the outer surface of the first portion 51 having the steam passage portion 15-1, the portion in contact with the heating element 100-1 functions as a heat receiving portion. Further, the heating element 100-2 is thermally connected to the outer surface of the first portion 51 of the container 10 having the steam passage portion 15-2. Of the outer surface of the first portion 51 having the steam passage portion 15-2, the portion in contact with the heating element 100-2 functions as a heat receiving portion.

When the heat transporter 1 receives heat from the heating element 100-1 at the heat receiving portion of the first portion 51 having the steam passage portion 15-1, the cavity of the first portion 51 having the steam passage portion 15-1 opens. The liquid-phase working fluid L enclosed in the portion 13 undergoes a phase change from the liquid phase to the gas phase at the heat receiving portion, and the phase-changed gas-phase working fluid G flows through the vapor passage portion 15-1. , diffuses from the heat receiving portion of the first portion 51 having the steam channel portion 15-1 to the entire steam channel portion 15-1. The vapor-phase working fluid G diffused over the entire vapor flow path portion 15-1 radiates latent heat and undergoes a phase change from the vapor phase to the liquid phase. At this time, the released latent heat is released to the external environment of the heat transporter 1 from the entire first portion 51 having the steam passage portion 15-1. Due to the capillary force of the wick structure 14, the working fluid L, which has undergone a phase change from the gas phase to the liquid phase, flows back from the entire vapor flow path portion 15-1 to the heat receiving portion to which the heating element 100-1 is thermally connected. be.

Further, when the heat transporter 1 receives heat from the heating element 100-2 at the heat receiving portion of the first portion 51 having the steam passage portion 15-2, the first portion 51 having the steam passage portion 15-2 The liquid-phase working fluid L sealed in the hollow portion 13 of the heat-receiving portion undergoes a phase change from the liquid phase to the gas phase, and the phase-changed gas-phase working fluid G flows through the vapor passage portion 15-2. Then, it diffuses from the heat receiving portion of the first portion 51 having the steam channel portion 15-2 to the entire steam channel portion 15-2. The vapor-phase working fluid G diffused over the entire vapor flow path portion 15-2 radiates latent heat and undergoes a phase change from the vapor phase to the liquid phase. At this time, the released latent heat is released to the external environment of the heat transporter 1 from the entire first portion 51 having the steam passage portion 15-2. Due to the capillary force of the wick structure 14, the working fluid L, which has undergone a phase change from the gas phase to the liquid phase, flows back from the entire vapor flow path portion 15-2 to the heat receiving portion to which the heating element 100-2 is thermally connected. be.

In the heat transporter 1, the first portion 51 having the steam flow channel portion 15-1 and the first portion 51 having the steam flow channel portion 15-2 each have air in the heat transport direction D of the heat transporter 1. In the second portion 52 that separates the vapor channel portion 15-1 and the vapor channel portion 15-2 while the phase working fluid G smoothly flows, the vapor phase in the heat transport direction D of the heat transporter 1 Circulation of the working fluid G is restricted. In the heat transporter 1, the gaseous-phase working fluid G flows independently in the first portion 51 having the vapor passage portion 15-1 and the first portion 51 having the vapor passage portion 15-2. do. Therefore, the heating element 100-1 is thermally connected to the first portion 51 having the steam flow path portion 15-1, and the heating element 100-2 is connected to the first portion 51 having the steam flow path portion 15-2. Even if they are thermally connected, the flow of the vapor-phase working fluid G between the vapor flow path section 15-1 and the vapor flow path section 15-2 is restricted at the second portion 52. FIG. Thus, in the heat transporter 1, heat transport between the first portion 51 having the steam flow path portion 15-1 and the first portion 51 having the steam flow path portion 15-2 is restricted. Therefore, the heating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-1 and the heat generating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-2. Even if the heating elements 100-2 differ in heat generation amount and heat resistance, both the heating elements 100-1 and 100-2 can exhibit excellent cooling characteristics.

In addition, in the heat transporter 1, the second portion 52 has a gas flow between the first portion 51 having the steam channel portion 15-1 and the first portion 51 having the steam channel portion 15-2. Since the circulation of the phase working fluid G is restricted, the amount of working fluid in the first portion 51 to which the heating element 100-1 is thermally connected can be optimized for the heating element 100-1. 2 can be optimized for the heating element 100-2. Therefore, in the heat transporter 1, since the amount of working fluid can be optimized for the heat generating elements 100 thermally connected to each of the plurality of first portions 51, each heat generating element 100 can be cooled excellently. characteristics can be demonstrated.

In addition, in the heat transporter 1, the steam channel 15 is blocked at the second portion 52, and the steam channel 15 is divided into a plurality of independent steam channel portions 15-1 and 15-2. , the vapor-phase working fluid G is prevented from flowing between the first portion 51 having the vapor flow path portion 15-1 and the first portion 51 having the vapor flow path portion 15-2. Further excellent cooling characteristics can be exhibited for the heating element 100 that is thermally connected to each of the one portions 51 .

In addition, in the heat transporter 1, the wick structure 14 continuously extends from the first portion 51 to the second portion 52, so that the first portion 51 having the steam passage portion 15-1 and the While the vapor-phase working fluid G is prevented from flowing between the first portion 51 having the vapor passage portion 15-2 at the second portion 52, the liquid-phase working fluid L is prevented from flowing between the first portion 51 and the first portion 51. Therefore, even if the amount of heat generated by the heating element 100 thermally connected to each of the plurality of first portions 51 fluctuates, the working fluid can flow through the heating element 100 . Quantity can be more reliably optimized.

Next, the details of the heat transporter according to the second embodiment of the present invention will be described. Since the heat transporter according to the second embodiment has the main components in common with the heat transporter according to the first embodiment, the same components as the heat transporter according to the first embodiment are Description will be made using the same reference numerals. FIG. 3 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the second embodiment of the invention.

In the heat transporter 1 according to the first embodiment, the container 10 is a flat container and is a vapor chamber, but as shown in FIG. 3, the heat transporter 2 according to the second embodiment , the container 10 is a tubular body 40 in which the end face of one end portion 41 and the end face of the other end portion 42 are sealed, and the heat transport body 2 is a heat pipe. A recessed portion 31 recessed toward the hollow portion 13 is formed in a partial region of the tubular body 40 (an intermediate portion in the longitudinal direction of the tubular body 40), so that the container 10 has the recessed portion 16. . The concave portion 16 is formed over the entire radial direction of the tubular body 40 .

In the heat transporter 2 , the area where the recess 16 is not formed is the first portion 51 , and the recess 16 is the second portion 52 . In the heat transporter 2 as well, the steam channel 15 is blocked at the second portion 52, and the steam channel 15 is divided into a plurality of independent steam channel portions 15-1 and 15-2. The surface of the second portion 52 of the concave portion 16 is a curved surface, the central portion of which is substantially flat, and the edge portions of which are curved or substantially flat. In FIG. 3, the surface of the second portion 52 of the recess 16 is a flat surface.

In the heat transporter 2 , the wick structure 14 is provided on the inner peripheral surface of the container 10 , specifically, on the entire inner peripheral surface of the container 10 . Moreover, the shape of the first portion 51 in the direction perpendicular to the longitudinal direction is not particularly limited, but examples thereof include a circular shape, an elliptical shape, and a flat shape.

In the heat transporter 2 as well, the vapor-phase working fluid is prevented from flowing between the first portion 51 having the vapor passage portion 15-1 and the first portion 51 having the vapor passage portion 15-2. , the heating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-1, and the heat generating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-2. Even if the heating element 100-2 has a different heating value and heat resistance, the heating element 100-1 or 100-2 can exhibit excellent cooling characteristics. Also in the heat transporter 2, the wick structure 14 extends continuously from the first portion 51 to the second portion 52, so that the liquid-phase working fluid flows through the first portion 51 and the second portion 52. Therefore, even if the amount of heat generated by the heating element 100 thermally connected to each of the plurality of first portions 51 fluctuates, the amount of working fluid can be supplied to the heating element 100. You can definitely optimize.

Next, the details of the heat transporter according to the third embodiment of the present invention will be described. Since the heat transporter according to the third embodiment has the main components in common with the heat transporters according to the first and second embodiments, the heat transporters according to the first and second embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 4 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the third embodiment of the invention.

In the heat transporter 1 according to the first embodiment, the steam channel 15 is closed at the second portion 52 of the flat container 10, and the steam channel 15 is divided into a plurality of independent steam channel portions 15. -1 and 15-2, but in the heat transporter 3 according to the third embodiment, as shown in FIG. It is not in contact with the wick structure 14 . Therefore, the second thickness at the second portion 52 of the steam flow path 15 is over 0 mm. Moreover, in the heat transporter 3, the second thickness of the steam flow path 15 in the second portion 52 is reduced to 1/2 or less of the first thickness of the steam flow path 15 in the first portion 51. , and the steam flow path 15 is not blocked at the second portion 52 . Therefore, in the heat transporter 3 , the steam flow path 15 is also formed in the second portion 52 .

In the heat transporter 3, the first portion 51 having the steam channel portion 15-1 and the first portion 51 having the steam channel portion 15-2 are connected via the second portion 52 where the steam channel 15 is not blocked. A portion 51 of is continuously provided. The second thickness of the second portion 52 of the steam flow path 15 is, for example, 0.15 mm or less.

In the heat transporter 3 as well, in the second portion 52, the gas-phase working fluid flow between the first portion 51 having the vapor passage portion 15-1 and the first portion 51 having the vapor passage portion 15-2. Since the flow is restricted, the heating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-1 and the first portion 51 having the steam flow path portion 15-2. Even if the heating element 100-2 to be thermally connected has a different heating value and heat resistance, both the heating elements 100-1 and 100-2 can exhibit excellent cooling characteristics. Also in the heat transporter 3, the wick structure 14 extends continuously from the first portion 51 to the second portion 52, so that the liquid-phase working fluid flows through the first portion 51 and the second portion 52. Therefore, even if the amount of heat generated by the heating element 100 thermally connected to each of the plurality of first portions 51 fluctuates, the amount of working fluid can be supplied to the heating element 100. You can definitely optimize. In addition, in the heat transporter 3, since the tip of the concave portion 16 is not in contact with the opposing wick structure 14, deformation of the wick structure 14 is reliably prevented, and the return characteristics of the liquid-phase working fluid are further improved. do.

Next, the details of the heat transporter according to the fourth embodiment of the present invention will be described. Since the heat transporter according to the fourth embodiment has the main components in common with the heat transporters according to the first to third embodiments, the heat transporters according to the first to third embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 5 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the fourth embodiment of the present invention.

In the heat transporter 2 according to the second embodiment, the container 10 is a tubular body 40, the steam flow path 15 is closed at the second portion 52 of the container 10, and the steam flow path 15 is composed of a plurality of independent steam 5, in the heat transporter 4 according to the fourth embodiment, the second portion 52 of the container 10 is divided into the flow passage portions 15-1 and 15-2. The tip does not abut the opposing wick structure 14 . In the heat transporter 4, the second thickness of the steam channel 15 at the second portion 52 is reduced to 1/2 or less with respect to the first thickness of the steam channel 15 at the first portion 51. , the steam flow path 15 is not blocked at the second portion 52 . Therefore, in the heat transporter 4 , the steam flow path 15 is also formed in the second portion 52 .

In the heat transporter 4, the first portion 51 having the steam channel portion 15-1 and the first portion having the steam channel portion 15-2 are connected via the second portion 52 where the steam channel 15 is not blocked. A portion 51 of is continuously provided. The second thickness of the second portion 52 of the steam flow path 15 is, for example, 0.15 mm or less.

In the heat transporter 4 as well, in the second portion 52, the gas-phase working fluid flow between the first portion 51 having the vapor passage portion 15-1 and the first portion 51 having the vapor passage portion 15-2. Since the flow is restricted, the heating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-1 and the first portion 51 having the steam flow path portion 15-2. Even if the heating element 100-2 to be thermally connected has a different heating value and heat resistance, both the heating elements 100-1 and 100-2 can exhibit excellent cooling characteristics. Also, in the heat transporter 4, the wick structure 14 extends continuously from the first portion 51 to the second portion 52, so that the liquid-phase working fluid flows through the first portion 51 and the second portion 52. Therefore, even if the amount of heat generated by the heating element 100 thermally connected to each of the plurality of first portions 51 fluctuates, the amount of working fluid can be supplied to the heating element 100. You can definitely optimize.

Next, the details of the heat transporter according to the fifth embodiment of the present invention will be described. Since the heat transporter according to the fifth embodiment has the main components in common with the heat transporters according to the first to fourth embodiments, the heat transporters according to the first to fourth embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 6 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the fifth embodiment of the present invention.

In the heat transporter 1 according to the first embodiment, the container 10 is provided with one recess 16, and the steam channel 15 is divided into two independent steam channel portions 15-1 and 15-2. However, as shown in FIG. 6, in the heat transporter 5 according to the fifth embodiment, the container 10 is provided with two recesses 16, and the steam flow paths 15 are formed into three independent steam flow path sections 15. -1, 15-2 and 15-3. Therefore, the heat transporter 5 is provided with three first portions 51 and two second portions 52 . Also, the three first parts 51 are connected via the second parts 52 .

Since the heat transporter 5 is provided with three first portions 51, it is possible to thermally connect the three heating elements 100-1, 100-2, and 100-3 as objects to be cooled.

In the heat transporter 5, the first portion 51 having the steam channel portion 15-1, the first portion 51 having the steam channel portion 15-2, and the first portion 51 having the steam channel portion 15-3. Therefore, the heating element 100-1 thermally connected to the first portion 51 having the vapor passage portion 15-1 and the vapor passage portion 15 -2 and the heating element 100-3 thermally connected to the first portion 51 having the steam flow path portion 15-3, Even with the heating elements 100 having different calorific value and heat resistance, excellent cooling characteristics can be exhibited for any of the heating elements 100-1, 100-2, and 100-3. Also in the heat transporter 5, the wick structure 14 extends continuously from the first portion 51 to the second portion 52, so that the liquid-phase working fluid flows through the first portion 51 and the second portion 52. Therefore, even if the amount of heat generated by the heating element 100 thermally connected to each of the plurality of first portions 51 fluctuates, the amount of working fluid can be supplied to the heating element 100. You can definitely optimize.

Next, the details of the heat transporter according to the sixth embodiment of the present invention will be described. Since the heat transporter according to the sixth embodiment has the main components in common with the heat transporters according to the first to fifth embodiments, the heat transporters according to the first to fifth embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 7 is a side cross-sectional view explaining the outline of the internal structure of the heat transporter according to the sixth embodiment of the present invention.

In the heat transporter 4 according to the fourth embodiment, the container 10, which is the tubular body 40, is provided with one concave portion 16 and two first portions 51, but as shown in FIG. Furthermore, in the heat transporter 6 according to the sixth embodiment, the container 10 is provided with two recesses 16, and the steam flow path 15 has three steam flow path sections 15-1, 15-2, and 15-3. have. Therefore, the heat transporter 6 is provided with three first portions 51 and two second portions 52 . Also, the three first parts 51 are connected via the second parts 52 . In the heat transporter 6 , the tip of each of the two recesses 16 is not in contact with the opposing wick structure 14 , and the thickness of the vapor channel 15 at the first portion 51 is the second thickness with respect to the first thickness. The second thickness of the steam flow path 15 at the portion 52 of is reduced to 1/2 or less. Accordingly, in the second portion 52, the steam flow path 15 is not blocked.

Since the heat transporter 6 is provided with three first portions 51, it is possible to thermally connect the three heating elements 100-1, 100-2, and 100-3 as objects to be cooled.

In the heat transporter 6, the first portion 51 having the steam channel portion 15-1, the first portion 51 having the steam channel portion 15-2, and the first portion 51 having the steam channel portion 15-3. Since the circulation of the vapor-phase working fluid between the heating element 100-1 and the vapor passage portion 15 is thermally connected to the first portion 51 having the vapor passage portion 15-1, -2 and the heating element 100-3 thermally connected to the first portion 51 having the steam flow path portion 15-3, Even with the heating elements 100 having different calorific value and heat resistance, excellent cooling characteristics can be exhibited for any of the heating elements 100-1, 100-2, and 100-3. Also in the heat transporter 6, the wick structure 14 extends continuously from the first portion 51 to the second portion 52, so that the liquid-phase working fluid flows through the first portion 51 and the second portion 52. Therefore, even if the amount of heat generated by the heating element 100 thermally connected to each of the plurality of first portions 51 fluctuates, the amount of working fluid can be supplied to the heating element 100. You can definitely optimize.

Next, the details of the heat transporter according to the seventh embodiment of the present invention will be described. Since the heat transporter according to the seventh embodiment has the main components in common with the heat transporters according to the first to sixth embodiments, the heat transporters according to the first to sixth embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 8 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the seventh embodiment of the invention.

In the heat transporter 1 according to the first embodiment, the heating element 100-1 is thermally connected to the first portion 51 having the vapor flow path portion 15-1, and the heat generating element 100-1 is thermally connected to the first portion 51 having the vapor flow path portion 15-2. The heating element 100-2 was thermally connected to the portion 51 of the first. That is, in the heat transporter 1, the heating element 100 is thermally connected to all of the plurality of first portions 51, but as shown in FIG. 8, the heat transporter 7 according to the seventh embodiment Now, the plurality of first portions 51 includes the first portions 51 thermally connected to the heating element 100 and the first portions 51 not thermally connected to the heating element 100 .

In the heat transporter 7, the heating element 100-1 is thermally connected to the first portion 51 having the steam passage portion 15-1, and the first portion 51 having the steam passage portion 15-2 includes: The heating element is not thermally connected. In the heat transporter 7 as well, the steam flow path 15 is blocked at the second portion 52 of the container 10, and the steam flow path 15 is divided into a plurality of (two in the heat transporter 7) independent steam flow path sections 15-1. , 15-2. As described above, the vapor-phase working fluid is prevented from flowing between the first portion 51 having the vapor flow path portion 15-1 and the first portion 51 having the vapor flow path portion 15-2. Therefore, in the heat transporter 7, while cooling the heating element 100-1 thermally connected to the first portion 51 having the vapor passage portion 15-1, It is possible to prevent the heat from the heating element 100-1 from being transported from the portion 51 of the heat generating element 100-1 to the first portion 51 having the steam passage portion 15-2. From the above, for example, of the planar container 10, the portion of the first portion 51 having the steam channel portion 15-2 can function as part of the housing.

Next, the details of the heat transporter according to the eighth embodiment of the present invention will be described. Since the heat transporter according to the eighth embodiment has the main components in common with the heat transporters according to the first to seventh embodiments, the heat transporters according to the first to seventh embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 9 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the eighth embodiment of the present invention.

In the heat transporter 2 according to the second embodiment, the heating element 100-1 is thermally connected to the first portion 51 having the vapor flow path portion 15-1, and the heat generating element 100-1 is thermally connected to the first portion 51 having the vapor flow path portion 15-2. The heating element 100-2 was thermally connected to the portion 51 of the first. That is, in the heat transporter 2, the heating element 100 is thermally connected to all of the plurality of first portions 51, but as shown in FIG. 9, the heat transporter 8 according to the eighth embodiment Now, the plurality of first portions 51 includes the first portions 51 thermally connected to the heating element 100 and the first portions 51 not thermally connected to the heating element 100 .

In the heat transporter 8, the heating element 100-1 is thermally connected to the first portion 51 having the steam passage portion 15-1, and the first portion 51 having the steam passage portion 15-2 generates heat. The bodies are not thermally connected. In the heat transporter 8 as well, the steam flow path 15 is blocked at the second portion 52 of the container 10, and the steam flow path 15 is divided into a plurality of (two in the heat transporter 8) independent steam flow path sections 15-1. , 15-2. As described above, the vapor-phase working fluid is prevented from flowing between the first portion 51 having the vapor flow path portion 15-1 and the first portion 51 having the vapor flow path portion 15-2. Therefore, in the heat transporter 8, while cooling the heating element 100-1 thermally connected to the first portion 51 having the vapor passage portion 15-1, It is possible to prevent the heat from the heating element 100-1 from being transported from the portion 51 of the heat generating element 100-1 to the first portion 51 having the steam passage portion 15-2. From the above, of the container 10, which is, for example, the tubular body 40, the portion of the first portion 51 having the steam flow path portion 15-2 can function as part of the housing.

Next, the details of the heat transporter according to the ninth embodiment of the present invention will be described. Since the heat transporter according to the ninth embodiment has the main components in common with the heat transporters according to the first to eighth embodiments, the heat transporters according to the first to eighth embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 10 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the ninth embodiment of the present invention.

As shown in FIG. 10, in the heat transporter 9 according to the ninth embodiment, a step portion 60 is further provided in the second portion 52 of the heat transporter 1 according to the first embodiment. It's becoming Specifically, the heat transporter 9 has a stepped portion 60 formed in the thickness direction of the container 10 at the second portion 52 of the flat container 10 . Due to the stepped portion 60, the first portion 51 having the steam flow path portion 15-2 is located closer to the substrate (not shown) on which the heating element 100 is mounted than the first portion 51 having the steam flow path portion 15-1. located in the direction Further, the height of the heating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-1 is thermally higher than the first portion 51 having the steam flow path portion 15-2. is higher than the height of the heating element 100-2 connected to .

In the heat transporter 9, the container 10 has the stepped portion 60 formed in the thickness direction of the container 10 in the second portion 52, so that the first portion 51 having the steam passage portion 15-1 is thermally transferred. Even if the height of the heating element 100-1 connected to the heating element 100-1 is different from the height of the heating element 100-2 thermally connected to the first portion 51 having the steam flow path portion 15-2, the heating element Thermal connectivity can be improved for both 100-1 and 100-2.

Next, details of the heat transporter according to the tenth embodiment of the present invention will be described. Since the heat transporter according to the tenth embodiment has the main components in common with the heat transporters according to the first to ninth embodiments, the heat transporters according to the first to ninth embodiments The same reference numerals are used for the same constituent elements as those in FIG. FIG. 11 is a side cross-sectional view for explaining the outline of the internal structure of the heat transporter according to the tenth embodiment of the present invention.

As shown in FIG. 11, in the heat transporter 110 according to the tenth embodiment, a step portion 60 is further provided in the second portion 52 of the heat transporter 2 according to the second embodiment. It's becoming Specifically, the heat transporter 110 has a stepped portion 60 formed in the thickness direction of the container 10 at the second portion 52 of the container 10 , which is the tubular body 40 . Due to the stepped portion 60, the first portion 51 having the steam flow path portion 15-2 is located closer to the substrate (not shown) on which the heating element 100 is mounted than the first portion 51 having the steam flow path portion 15-1. located in the direction Further, the height of the heating element 100-1 thermally connected to the first portion 51 having the steam flow path portion 15-1 is thermally higher than the first portion 51 having the steam flow path portion 15-2. is higher than the height of the heating element 100-2 connected to .

In the heat transporter 110, the container 10 has the stepped portion 60 formed in the thickness direction of the container 10 at the second portion 52, so that the first portion 51 having the steam passage portion 15-1 is thermally transferred. Even if the height of the heating element 100-1 connected to the heating element 100-1 is different from the height of the heating element 100-2 thermally connected to the first portion 51 having the steam flow path portion 15-2, the heating element Thermal connectivity can be improved for both 100-1 and 100-2.

Next, a method for manufacturing the heat transporter of the present invention will be described. Here, a method for manufacturing a heat transporter will be described using the heat transporter 1 according to the first embodiment of the present invention. 12A and 12B are side cross-sectional views illustrating the outline of the method for manufacturing the heat transporter according to the first embodiment of the present invention.

The heat transporter of the present invention can be manufactured by adding a process of deforming the container to the manufacturing process of a conventional heat transporter in which the container does not have the first part and the second part. Specifically, it is as follows.

As shown in FIG. 12, first, the wick structure 14 is mounted on the main surface of the other plate-like body 12 . Next, one plate-like body 11 is superimposed on the other plate-like body 12 from the side where the wick structure 14 is provided to form a cavity 13 which is a closed internal space. The structure 14 is accommodated. Then, the container 10 is manufactured by joining the abutment portions where the peripheral edge portion of one plate-like body 11 and the peripheral edge portion of the other plate-like body 12 are in contact. Next, a liquid injection tube 120 is attached to the side of the container 10 for communicating the cavity 13 with the environment outside the container 10 . Next, the hollow portion 13 is degassed through the liquid injection pipe 120 . Next, the liquid-phase working fluid L is injected into the hollow portion 13 from the injection pipe 120 . Next, the root portion of the liquid injection tube 120 is sealed to make the hollow portion 13 a sealed space. Next, by cutting the liquid injection pipe 120, the container 10 having the cavity 13 formed therein, the working fluid enclosed in the cavity 13, and the cavity 13 in which the liquid-phase working fluid L flows. It is possible to obtain a heat transporter that includes the wick structure 14 provided in the cavity and the vapor flow path 15 provided in the cavity 13 through which the vapor-phase working fluid flows.

Next, the main surface of one of the plate-like bodies 11 is subjected to deformation treatment such as plastic deformation using a pressing jig to form the recesses 16 in the container 10, thereby forming the first portion 51 and the second portion 51 in the container. It is possible to manufacture the heat transporter 1 according to the first embodiment in which the portion 52 of is formed.

As described above, the heat transporter of the present invention can be manufactured by adding a container deformation process to the conventional heat transporter manufacturing process, so the manufacturing process is simple and the yield can be improved.

Next, another embodiment of the present invention will be described. In the heat transporters of the first, third, fifth, seventh, and ninth embodiments using flat containers, one of the two main surfaces of the container is provided with a wick structure. Alternatively, both major surfaces of the container may be provided with wick structures.

In addition, in the heat transporters of the second, fourth, sixth, eighth, and tenth embodiments using the tubular container, the wick structure is provided on the entire inner peripheral surface of the container. Alternatively, a wick structure is provided on a portion of the inner peripheral surface of the container facing the tip of the recess and a portion extending in the longitudinal direction of the container from that portion, and a wick structure is provided on the other portions. It is good also as the aspect which is not provided.

The heat transporter of the present invention can exhibit excellent cooling characteristics for each heat generating element even when a plurality of heat generating elements with different heat generation amounts and heat resistances are thermally connected. It is highly useful in the field of cooling installed heating elements with different heat generation characteristics.

1, 2, 3, 4, 5, 6, 7, 8, 9, 110 Heat transporter 10 Container 13 Cavity 14 Wick structure 15 Steam channel 16 Recess 17 Plane 21 First surface 22 Second surface 51 first part 52 second part

Claims (14)

A container thermally connected to a heating element and having a cavity formed therein, a working fluid enclosed in the cavity, and a wick provided in the cavity through which the liquid-phase working fluid flows. A heat transporter comprising a structure and a vapor channel provided in the cavity through which the vapor-phase working fluid flows,
the container is
a first portion having a first thickness in a dimension of the steam channel in a direction perpendicular to the heat transport direction of the heat transporter;
By having the concave portion recessed in the direction of the hollow portion, the dimension of the steam channel in the direction orthogonal to the heat transport direction of the heat transporter is half or less than the first thickness. a second portion having a second thickness and provided at an intermediate portion in the heat transport direction of the heat transporter;
A heat transporter having 2. The heat transporter according to claim 1, wherein said steam channel is closed at said second portion, and said steam channel is divided into a plurality of independent steam channel portions. 2. The heat transporter according to claim 1, wherein the second thickness of the steam channel is more than 0 mm and 0.15 mm or less. 4. The heat transporter according to any one of claims 1 to 3, wherein the second portion has a dimension parallel to the heat transport direction of 0.05 mm or more and 5 mm or less. 5. The heat transporter according to any one of claims 1 to 4, wherein said wick structure extends continuously from said first portion to said second portion. The container has a first surface with a planar portion and a second surface opposite the first surface with a planar portion, the first surface facing the planar portion. 6. The heat transporter according to any one of claims 1 to 5, wherein the container has the recessed portion by having the recessed portion recessed toward the cavity portion. 7. The heat transporter according to claim 6, wherein said wick structure is provided on the inner surface of said second surface. The container is formed of one plate-like body and the other plate-like body facing the one plate-like body, and the one plate-like body has the recess recessed toward the cavity. 8. The heat transporter according to any one of 1 to 7. The heat transporter according to any one of claims 6 to 8, wherein the heat transporter is a vapor chamber. The container is a tubular body in which an end surface of one end and an end surface of the other end are sealed, and a concave portion recessed toward the cavity is formed in a partial region of the tubular body. 6. The heat transporter according to any one of claims 1 to 5, wherein the container has the concave portion. 11. The heat transporter according to claim 10, wherein said wick structure is provided on the inner peripheral surface of said container. The heat transporter according to claim 10 or 11, wherein the heat transporter is a heat pipe. 13. The heat transporter according to any one of claims 1 to 12, wherein the container has a stepped portion formed in the thickness direction at the second portion. 14. The heat transporter according to any one of Claims 1 to 13, wherein the first portion has a heat receiving portion that is thermally connected to the heating element.

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