JP2003249614A - Evaporation cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an evaporation cooling device capable of surely maintaining a temporary assembling state of each of core units, in the device having a heat dissipating core section consisting of the core units. <P>SOLUTION: In the evaporation cooling device, both ends of the longitudinal direction of a plurality of heat dissipating tubes arranged at prescribed positions are joined so that one or more core units 120a supported by a pair of core plates 123 can be sandwiched by a refrigerant tank 110 in which a refrigerant is stored and a header 130 through which the refrigerant pass, and the insides of the tank 110 and the header 130 are communicated by the plurality of tubes 121. In this device, position regulating means 123a, 123b and 124 for regulating the positions of the pair of core plates 123 in the longitudinal direction of the tubes 121 are provided on the core unit 120a. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiling cooling device for cooling a heating element such as a semiconductor element by latent heat transfer due to boiling and condensation of a refrigerant.

[0002]

2. Description of the Related Art FIG. 14 shows the entire shape of a boiling cooling device (Japanese Patent Application No. 2002-5970) which the present applicant has already applied. The boiling cooling device 100 includes a coolant tank 110 in which a coolant is stored, a heat radiation core portion 120, and a header 130.
The heating element 10 is attached to the lower heat receiving surface 110c of the refrigerant tank 110.

Here, as the heat dissipation core portion 120, FIG.
As shown in FIG. 5, the radiation fins 122 are interposed between the radiation tubes 121 arranged in the short side direction of the tube cross section, and both longitudinal ends of the radiation tubes 121 are inserted into the core plate 123 to be temporarily assembled. Core unit 12
0a are arranged in a plurality, and the plurality of core units 120a are arranged between the coolant tank 110 and the header 130 and brazed integrally.

Thus, the cooling performance of the boiling cooling device 100 can be easily adjusted by appropriately combining the core units 120a. And the refrigerant tank 1
A plurality of heat dissipation tubes 121 for the header 10 and the header 130
It eliminates the need for complicated assembly work.

Then, as shown in FIG. 16, an insert 124 inserted into the core plate 123 is provided outside the heat dissipation tubes 121 of the core unit 120a so that the core unit 120a can be handled manually or transported. The heat radiation tube 121 is prevented from falling off.

[0006]

However, while the applicant of the present invention is proceeding with specific manufacturing studies, the core plate 12
3, hole size, heat dissipation tube 121 and insert 12
It was found that, due to manufacturing variations in the dimensions of the insertion portion of No. 4, the holding force between the two after insertion becomes weak, and the temporarily assembled state of the core unit 120a may not be sufficiently retained.

In view of the above problems, it is an object of the present invention to provide a boiling cooling device in which the heat dissipating core portion is composed of a core unit and which can reliably hold the temporary assembly state of the core unit. .

[0008]

The present invention employs the following technical means in order to achieve the above object.

According to the first aspect of the invention, one or more core units in which both ends in the longitudinal direction of the plurality of heat radiation tubes (121) arranged in a predetermined arrangement are supported by the pair of core plates (123). (120a) is joined so as to be sandwiched by a refrigerant tank (110) in which a refrigerant is stored and a header (130) through which the refrigerant flows, and a plurality of heat dissipation tubes (121) are used to connect the refrigerant tank. (110) and the header (130), the core unit (120
The feature a) is that position regulating means (123a, 123b, 124) for regulating the position of the pair of core plates (123) in the longitudinal direction of the heat dissipation tube (121) is provided.

As a result, it is possible to prevent the core plate (123) from being displaced in the longitudinal direction of the heat dissipation tube (121) when the core unit (120a) is manually handled or transported, so that the heat dissipation tube (121) is moved to the core plate (121). 123)
Core unit (120a) that does not fall from the space
The temporary assembled state of can be reliably maintained.

Specific position regulating means (123a, 123)
As b), as in the invention described in claim 2, an extension portion (123a) extending from the end of the core plate (123) in the arrangement direction of the heat dissipation tubes (121) toward the opposing core plate (123) side, The extension portions (123a) may be engaged with each other and the engagement portion (123b) that is locked in the longitudinal direction of the heat radiation tube (121).

Then, as in the invention described in claim 3,
The heat dissipation tube (12) of the pair of core plates (123)
1) A plate protrusion (123c) protruding toward the refrigerant tank (110) and the header (130) is provided at the end of the arrangement direction of 1), and the plate protrusion (123c) is provided on the refrigerant tank (110) and the header (130). ) Is inserted into the recess (110a,
130a) respectively, the plate convex portion (123c) and the concave portion (110a, 130a)
Can be used as a positioning means for the core unit (120a) with respect to the refrigerant tank (110) and the header (130),
Easy to assemble.

Further, as another position regulating means (124), the core plate (1
It is good also as an insert (124) with which the arrangement direction end of the heat dissipation tube (121) of 23) is inserted and engaged.

More specifically, as in the invention described in claim 5, the heat dissipation tube (12) of the core plate (123) is
1) A protrusion (123d) protruding in the arrangement direction of the heat dissipation tube (121) is provided at the end of the arrangement direction of 1), and the insert (124) has an insertion hole (124a) into which the protrusion (123d) is inserted. The projection (123d) is provided and the insertion hole (12
4a), the insert (124) is caulked and engaged so that the position of the core plate (123) can be restricted in the longitudinal direction of the heat dissipation tube (121), and the core unit (120a). The temporary assembled state of can be reliably maintained.

Further, as in the invention described in claim 6, a convex portion (123d) protruding in the arrangement direction of the heat dissipation tubes (121) is provided at an end portion of the core plate (123) in the arrangement direction of the heat dissipation tubes (121). And an insertion hole (124a) into which the convex portion (123d) is inserted in the insert (124).
And an elastically deformable elastic part (124b) are provided, and after the convex part (123d) is inserted into the insertion hole (124a),
The convex portion (123d) or the end of the core plate (123) in the arrangement direction of the heat dissipation tube (121) is the elastic portion (124).
The insertion hole (124a) may be biased and engaged by the side b) so that the insert hole (124a) can be assembled to the core plate (123) with ease.

Further, as in the invention described in claim 7, the coolant tank (110) and the header (130) are provided at both longitudinal ends of the heat dissipation tube (121) of the insert (124).
The insert protrusion (124c) protruding to the side is provided, and the recesses (110a, 130) into which the insert protrusion (124c) is inserted are provided in the refrigerant tank (110) and the header (130).
By providing a) respectively, the same effect as that of the invention described in claim 3 can be obtained.

Further, as in the eighth aspect of the present invention, the refrigerant tank (110) and the header (130) are a laminated structure in which a plurality of flat plate members (111 to 113, 131 to 133) are stacked. In some cases, the recess (110a,
130a) is a plurality of flat plate members (111 to 113, 13).
1 to 133) provided with holes (111a to 113a, 1
31a to 133a) are formed by being overlapped with each other, the plate protrusion (123c) or the insert protrusion (124c) has holes (111a to 113a, 131a).
133a) so that the core unit (120a) has a plurality of flat plate members (111 to 1).
When assembling the refrigerant tank (110) and the header (130) composed of 13, 131 to 133), the plate protrusion (1
23c) or the insert protrusion (124c) serves as a positioning jig for the flat plate members (111 to 113, 131 to 133), which facilitates assembly.

According to the ninth aspect of the present invention, both longitudinal ends of the heat radiating tube (121) are inserted into and supported by the tube holes (123e) provided in the core plate (123) for heat radiation. If both ends of the tube (121) in the longitudinal direction are regulated so as not to project from the core plate (123), the flow resistance of the refrigerant in the refrigerant tank (110) and the header (130) is reduced. ,
The heat dissipation tube (121) in the refrigerant tank (110) and the header (130) can be reduced in size in the longitudinal direction.
Further, it is possible to prevent excess refrigerant from staying in the header (130). This is because although the insertion allowance of the heat dissipation tube (121) with respect to the core plate (123) is set small, the position regulating means (123a, 123b, 1).
This is possible because the temporary assembly state of the core unit (120a) can be reliably maintained by means of 24).

The reference numerals in parentheses of the above-mentioned means indicate the corresponding relationship with the concrete means described in the embodiments described later.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of a boiling cooling apparatus of the present invention will be described with reference to FIGS. The boiling cooling device 100 cools a heating element 10 such as a semiconductor element, and is composed of a coolant tank 110, a radiating core portion 120, and a header 130. Each member described below is made of aluminum or aluminum alloy. And is brazed integrally with the brazing material applied to the portions to be joined between the respective members.

The coolant tank 110 is a container having a rectangular parallelepiped shape that is flat in the vertical direction, and a predetermined amount of coolant is sealed inside. Water, alcohol, fluorocarbon, chlorofluorocarbon, or the like is used as the refrigerant.

A heating element 10 is arranged in the approximate center of the heat receiving surface 110c below the refrigerant tank 110, and is fixed by tightening bolts or the like (not shown). In order to reduce the contact thermal resistance between the heating element 10 and the heat receiving surface 110c,
A heat conductive grease may be interposed between the both. Further, as shown in FIG. 2, the heat dissipation surface 11 on the upper side of the refrigerant bath 110
0d is provided with a plurality of communication holes 110b for communicating the inside of the heat dissipation tube 121 of the core unit 120a described later with the inside of the coolant tank 110. Further, this communication hole 11
A concave portion 110a into which the plate convex portion 123c is inserted is provided at a position outside 0b.

The header 130 is a container in which a refrigerant flows, and has a flat rectangular parallelepiped in the vertical direction like the refrigerant tank 110, and has a lower surface like the refrigerant tank 110. A communication hole 130b and a recess 130a are provided (broken line in FIG. 1).

The heat dissipation core portion 120 is composed of one or more (here, three) core units 120a, and this core unit 120a is composed of a heat dissipation tube 121, heat dissipation fins 122 and a pair of core plates 123. .

The heat dissipation tubes 121 are tubes having a flat cross section, and a plurality of heat dissipation tubes 121 are arranged in the short side direction of the cross section in one core unit 120a. Heat dissipation fin 122
Is a corrugated thin plate material, and is interposed between the heat dissipation tubes 121.

The core plate 123 is used as the heat dissipation tube 12.
1 is a plate-shaped member extending in the arrangement direction, and has tube holes 123e corresponding to the positions of the heat dissipation tubes 121. The end of the heat dissipation tube 121 in the longitudinal direction is inserted into the tube hole 123e, and the heat dissipation tube 121 is supported by the core plate 123. still,
As shown in FIG. 4, the tube hole 123e is provided with a step inside, and the position of the end of the heat dissipation tube 121 in the longitudinal direction is regulated so as not to project from the core plate 123.

Then, the core plate 12 facing the end of the core plate 123 in the arrangement direction of the heat dissipation tubes 121 is arranged.
The extension 123a extending toward the third side is integrally provided by bending, and the engaging portion 1 is provided at the tip of the extension 123a.
23b is provided. Here, the engaging portion 123b includes the trapezoidal convex engaging portion 123b1 and the concave engaging portion 123.
and b2.

Further, one extension 123a of one core plate 123 is 2 in FIG.
As shown by the dotted line, the bending angle θ is formed to be smaller than 90 degrees. A pair of core plates 12
After assembling the heat dissipation tube 121 to 3, the bending process is applied in the direction of the arrow in the drawing so that the engaging portions 123b1 and 12b
3b2 is engaged so that the heat radiation tube 121 is locked in the longitudinal direction. The extension 123a and the engaging portion 123b of the core plate 123
Corresponds to the position regulating means in the present invention.

Further, the end portions of the pair of core plates 123 in the arrangement direction of the heat dissipation tubes 121 are integrally formed with the core plates 123 by cutting and raising, and the refrigerant bath 110
And plate protrusion 123c protruding toward the header 130 side
Is provided.

The core unit 120 configured as described above
a is a state where the plate projection 123 c is temporarily assembled, and the plate projection 123 c is the recess 110 a of the coolant tank 110 and the recess 1 of the header 130.
It is inserted into 30a, positioned, and assembled between the refrigerant tank 110 and the header 130. At this time, the tube hole 12
3e and the communication hole 110 of the refrigerant tank 110 and the header 130
The positions of b and 130b match each other. Then, the respective members are integrally brazed to each other to form the boiling cooling device 100 in which the refrigerant tank 110 and the header 130 are communicated with each other by the heat radiation tube 121.

The boiling cooling device 10 constructed as described above
At 0, some of the heat radiating tubes (heat radiating tubes in the vicinity of the heat generating body 10) 1 are the heat of the heat generating body 10 attached to the heat receiving surface 110c of the refrigerant tank 110, and the refrigerant that has boiled to evaporate.
21 is condensed and liquefied when returning from the other heat dissipation tube (heat dissipation tube away from the heating element 10) 121 to the refrigerant tank 110 via the header 130 and releasing the condensation latent heat at this time to the outside air. The heating element 10 is cooled.

In the present invention, the heat dissipation core portion 120 is
The core unit 120a is temporarily assembled to the one in which the cooling performance of the boiling cooling device 100 can be easily adjusted by appropriately combining the core units 120a by forming the core unit 120a from one or more core units 120a. In this state, the heat radiation tube 121 is prevented from falling off during manual handling or transportation, and the temporary assembled state can be reliably maintained.

That is, by providing the core plate 123 with the extending portion 123a and the engaging portion 123b as the position regulating means, the core plate 123 can be prevented from being displaced in the longitudinal direction of the heat radiating tube 121, and the heat radiating tube 121 can be prevented. The core unit 120a can be reliably held in the temporarily assembled state without falling off from between 123.

Further, the plate convex portion 123c provided on the core plate 123, the coolant tank 110, and the header 1 are also included.
The recesses 110a and 130a provided in 30 can be used as positioning means for the core unit 120a with respect to the coolant tank 110 and the header 130, and the assembling becomes easy.

Further, since the longitudinal end portion of the heat radiation tube 121 is prevented from protruding from the core plate 123, the flow resistance of the refrigerant in the refrigerant tank 110 and the header 130 is reduced, and the refrigerant tank 110 and the header 130 are reduced in resistance. The heat dissipation tube 121 can be reduced in size in the longitudinal direction. Further, it is possible to prevent excess refrigerant from staying in the header 130. This is because, although the insertion allowance of the heat dissipation tube 121 with respect to the core plate 123 is set to be small, the temporary assembly state of the core unit 120a can be reliably held by the extension portion 123a and the engagement portion 123b as the position regulating means. Therefore, it is possible.

The engaging portion 123b of the plate core 123
The shape of is not limited to the above-mentioned embodiment, but as shown in FIG.
It may be based on a circular shape, a square shape, a stepped shape, or the like.

(Second Embodiment) A second embodiment of the present invention is shown in FIGS. The second embodiment is different from the first embodiment in that the position regulating means is formed as an insert 124.

The insert 124 is made of a flat plate-like member and is used as the heat dissipation tube 121 in the core unit 120a.
Outside of the arrangement direction (actually the outermost radiation fin 122
Outside) of the core plate 123, and the ends of the heat dissipation tubes 121 of the core plate 123 in the arrangement direction are engaged with each other.

That is, at the end of the core plate 123 in the arranging direction of the heat radiating tubes 121, a convex portion (here, a bifurcated projecting shape) 123 d protruding in the arranging direction of the heat radiating tubes 121 is provided, and the insert 124 is also provided. An insertion hole (here, a rectangular hole) 124a into which the convex portion 123d is inserted is provided in the. Then, after inserting the convex portion 123d into the insertion hole 124a, the bifurcated shape is opened and the insert 124 is caulked,
The insert 124 is adapted to be engaged with the core plate 123.

Further, the heat dissipation tube 1 of the insert 124
Insert projections 124 c projecting toward the coolant tank 110 and the header 130 are provided at both ends in the longitudinal direction of 21.

As a result, similar to the first embodiment,
The position of the core plate 123 can be regulated in the longitudinal direction of the heat dissipation tube 121, and the temporarily assembled state of the core unit 120a can be reliably retained.

Further, by the insert convex portion 124c,
The plate convex portion 123c of the first embodiment can have the same positioning function, and the core unit 120a can be easily assembled to the refrigerant tank 110 and the header 130.

(Third Embodiment) FIGS. 9 to 11 show the third embodiment of the present invention. The third embodiment is a modification of the second embodiment, and changes the structure for engaging the core plate 123 and the insert 124.

As shown in FIG. 10, the insertion hole 12 into which the convex portion (here, one convex portion of a rectangular parallelepiped shape) 123d of the core plate 123 is inserted into the insert 124.
4a and an elastic portion 124b formed by punching a punching plate portion to form the insertion hole 124a in a bow shape. The elastic portion 124b is elastically deformable in the vertical direction of the insertion hole 124a.

After the convex portion 123d is inserted into the insertion hole 124a, the convex portion 123d is urged by the elastic portion 124b toward the side that reduces the opening area of the insertion hole 124a, so that the insert 124 is engaged with the core plate 123. To be done.

As a result, the same effect as the second embodiment can be obtained, and the assembling property of the insert 124 with respect to the core plate 123 can be improved.

The core plate 123 and the insert 12
As for the engagement structure with 4, the projecting portion 123f is provided at the end of the core plate 123 in the arrangement direction of the heat radiating tubes 121, and the insert 124 corresponds to the projecting portion 123f. Elastic part 12
4b may be provided.

(Fourth Embodiment) A fourth embodiment of the present invention is shown in FIGS. The fourth embodiment is a laminated structure in which the refrigerant tank 110 and the header 130 are formed by stacking a plurality of flat plate members 111 to 113, 131 to 133, respectively, as compared with the first embodiment, and the core unit 120a of the core unit 120a. The plate convex portion 123c also has a positioning function when assembling the flat plate members 111 to 113 and 131 to 133.

The coolant tank 110 is, for example, the heat receiving plate 1.
11, the heat dissipation plate 112, and the intermediate plate 113. When the plates 111 to 113 are stacked, the internal space as a container is formed by the opening 113b provided in the intermediate plate. Then, holes 111a to 113a are provided at positions corresponding to the plate protrusions 123c of the plates 111 to 113, and when the plates 111 to 113 are stacked, they overlap each other to form one hole (the recess 110a of the first embodiment). It corresponds to)).

As shown in FIG. 13, the header 130 is composed of header plates 131 to 133 having holes 131a to 133a similarly to the above-mentioned refrigerant tank 110, and it is assumed that the refrigerant tank 110 in FIG. 12 is turned upside down. It is formed.

The projecting length L of the plate convex portion 123c is set to be substantially equal to the laminated thickness of the plates 111 to 113 and 131 to 133.

When the coolant tank 110 is assembled to the core unit 120a, the plate projections 123c are aligned with the heat dissipation plate 1.
12, the intermediate plate 113 and the heat receiving plate 111 are inserted into the holes 112a, 113a, 111a. Further, when the header 130 is assembled to the core unit 120a, the plate protrusions 123c are attached to the header plate 1
31, 131, 133 holes 131a, 132a, 13
3a.

Thus, the plate convex portion 123c serves as a positioning jig for the flat plate members 111 to 113 and 131 to 133, so that the refrigerant tank 110 and the header 130 can be easily assembled when they are formed as a laminated structure. Become.

The core unit 120a includes the second,
As the insert 124 described in the third embodiment is provided, the insert protrusion 124c formed on the insert 124 is used as a positioning jig for the flat plate members 111 to 113, 131 to 133 forming the coolant tank 110 and the header 130. You may do it.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire boiling cooling device in a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a part of a refrigerant tank and a core unit in FIG.

FIG. 3 is a front view showing a core unit in FIG.

FIG. 4 is a cross-sectional view taken along the line AA in FIG.

5A and 5B are side views showing a first modification, a second modification, and a third modification, respectively, of the engaging portion of the core unit.

FIG. 6 is a front view showing a core unit according to a second embodiment.

7 is a view from the direction B in FIG.

8 is a cross-sectional view taken along the line CC in FIG.

FIG. 9 is a partial front view showing a core unit according to a third embodiment.

FIG. 10 is an exploded perspective view showing an engagement structure between the core plate and the insert in FIG.

11 is an exploded perspective view showing a modified example of FIG.

FIG. 12 is an exploded perspective view partially showing a refrigerant bath and a core unit in a fourth embodiment.

FIG. 13 is a cross-sectional view showing an entire boiling cooling device in a fourth embodiment.

FIG. 14 is a side view of the boiling cooling device. (Prior application technology)

FIG. 15 is a perspective view showing a core unit in FIG.

16 is a perspective view showing a modified example of the core unit in FIG.

[Explanation of symbols]

100 boiling cooling system 110 Refrigerant tank 110a recess 111 Heat receiving plate (flat plate member) 112 Heat dissipation plate (flat plate member) 113 Intermediate plate (flat plate member) 111a, 112a, 113a holes 120a core unit 121 Heat dissipation tube 123 core plate 123a Extension (position regulation means) 123b Engagement part (position regulation means) 123c Plate protrusion 123d convex part 123e tube hole 124 Insert (position control means) 124a insertion hole 124b elastic part 124c Insert convex part 130 header 130a recess 131, 132, 133 Header plate (flat plate member) 131a, 132a, 133a holes

Claims (9)

[Claims] 1. One or more core units (120a) supported by a pair of core plates (123) at both ends in the longitudinal direction of a plurality of heat radiation tubes (121) arranged in a predetermined arrangement. The refrigerant tank (110) in which the refrigerant is stored and the header (130) through which the refrigerant flows are joined so as to be sandwiched between the refrigerant tank (110) and the header (130). In the boiling cooling device in which the insides of the headers (130) are communicated with each other, in the core unit (120a), position regulating means for regulating the position of the pair of core plates (123) in the longitudinal direction of the heat dissipation tube (121). (123a, 123
b, 124) is provided. 2. The position regulating means (123a, 123)
b) is an extension part (123a) extending from the end of the heat dissipation tube (121) in the arrangement direction of the core plate (123) facing the core plate (123) side, and the extension part (123a) is engaged with each other. Engagement part (123b) that is locked together in the longitudinal direction of the heat dissipation tube (121)
The boil cooling apparatus according to claim 1, which comprises: 3. The plate protrusions (123c) protruding toward the refrigerant tank (110) and the header (130) at the ends of the pair of core plates (123) in the arrangement direction of the heat dissipation tubes (121). 2. The coolant tank (110) and the header (130) are respectively provided with recesses (110a, 130a) into which the plate protrusions (123c) are inserted. The boiling cooling device according to claim 2. 4. The insert (12) with which the position regulating means (124) is engaged by inserting the end of the core plate (123) in the arrangement direction of the heat dissipation tubes (121).
4) The boiling cooling device according to claim 1, characterized in that. 5. A protrusion (123d) protruding in the arrangement direction of the heat dissipation tubes (121) at an end of the core plate (123) in the arrangement direction of the heat dissipation tubes (121).
The insert (124) is provided with the convex portion (123d).
An insertion hole (124a) for inserting is inserted, and the convex portion (123d) is caulked and engaged with the insert (124) after being inserted into the insertion hole (124a). The boiling cooling device according to claim 4. 6. A protrusion (123d) protruding in the arrangement direction of the heat dissipation tubes (121) at an end of the core plate (123) in the arrangement direction of the heat dissipation tubes (121).
The insert (124) is provided with the convex portion (123d).
Is provided with an insertion hole (124a) and an elastically deformable elastic portion (124b), and the protrusion (123d) is inserted into the insertion hole (124a) and then the protrusion (123d) or The end of the core plate (123) in the arrangement direction of the heat dissipation tubes (121) is urged and engaged by the elastic portion (124b) toward the side that reduces the opening area of the insertion hole (124a). The boiling cooling device according to claim 4, which is characterized in that. 7. Insert protrusions (124c) protruding toward the refrigerant tank (110) and the header (130) are provided at both ends in the longitudinal direction of the heat dissipation tube (121) of the insert (124). The refrigerant tank (110) and the header (130) are provided with recesses (110a, 130a) into which the insert protrusions (124c) are inserted, respectively. The boiling cooling device according to any one of 1. 8. The refrigerant tank (110) and the header (130) are each composed of a plurality of flat plate members (111 to 11).
3, 131-133), and the recesses (110a, 130a) are holes (111a-113a, 131a) provided in the plurality of flat plate members (111-113, 131-133). To 133a) are formed to overlap each other, and the plate protrusion (12
3c) or the insert projection (124c) is inserted into all of the holes (111a to 113a, 131a to 133a).
Alternatively, the boiling cooling device according to claim 7. 9. Both ends in the longitudinal direction of the heat dissipation tube (121) are inserted into and supported by tube holes (123e) provided in the core plate (123), and both ends in the longitudinal direction of the heat dissipation tube (121). The boil cooling apparatus according to any one of claims 1 to 8, wherein the position of the portion is regulated so as not to project from the core plate (123).