JPH09203591A - Cooler in housing for moving body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooler in a housing for a moving body which makes it possible to perform the air cooling effect in balance during traveling and stopping of the body by enhancing the cooling effect during traveling of the body. SOLUTION: The cooler in a housing for a moving body comprises a housing 1 having a window opening 11 at a sidewall 10, a heat transfer block 2 mounted in the state for blocking the opening 11 at the sidewall 10 of the housing 1, suitable number of loop-like heat pipes 3 substantially horizontally mounted at the block 2 so that a heater 30 is substantially parallel to the sidewall 10 of the housing 1, and many radiating fins 20 provided along the lengthwise direction of the heater 30 on the surface or part in the housing 1 of the block 2. The heater 30 of the pipe 3 can be replaced with the hole formed at the block.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a vehicle, an aircraft,
The present invention relates to a cooling device in a housing of a ship or other moving body. More specifically, the present invention relates to a cooling device configured so that electric parts and the like in a housing are cooled better when a moving body moves and when it does not move.

[0002]

2. Description of the Related Art A conventional cooling device of this type will be described with reference to FIG. FIG. 3 is a partial plan cross-sectional view of the cooling device, in which a casing 1 for power control, which is isolated from the outside, is fixed to the bottom surface of the floor of the electric vehicle, and inside the casing 1, a snubber resistor (not shown), Snubber capacitors, gate amplifiers and other electrical parts are installed. A plurality of loop-shaped heat pipes 3 are penetratingly held in a partition plate 12 that also serves as one side wall of the housing 1 so as to overlap in the vertical direction. These heat pipes 3 are inclined by about 7 ° so that the heating unit 30 located in the housing 1 is in a downward-sloping shape.

A heat absorbing block 5 is attached to the heating portion 30 of each heat pipe 3 so as to penetrate the heating portion 30, and heat generating electric components 4 are attached to the heat absorbing block 5 by screwing or the like. ing. A large number of common plate-shaped heat radiation fins 32 are attached to the heat radiation portion 31 of each heat pipe 3.

According to the cooling device described above, the heat of the electric component 4 and the heat in the housing 5 caused by other electric components (not shown) are passed through the heat absorbing block 5 and the heating portion 3 of the heat pipe 3 is heated.
0, and the heat dissipation portion 31 is generated by the evaporation of the working fluid inside.
And is radiated to the atmosphere from the radiation fin 32.

[0005]

In the cooling device of FIG. 4, the inside of the housing 1 is cooled by using the wind generated when the vehicle moves, so that the heat radiation portion 31 of the heat pipe 3 has the arrow a in the figure. Is attached to the bottom surface of the floor so as to follow the traveling direction of the vehicle. Therefore, when a moving body such as a vehicle travels along the direction of the arrow a, the traveling wind generated by the traveling hits the radiating fins 32 at a right angle, and for most of the radiating fins 32, both ends (FIG. However, there is a problem that the cooling effect due to the traveling wind during traveling cannot be expected so much, apart from the cooling effect during the stop. That is,
For example, the heat generation of electric parts such as a semiconductor for control in an electric vehicle is particularly large at the time of starting or stopping, but the above-described conventional cooling device is more effective in radiating the large heat at the time of starting than during traveling. It wasn't suitable. An object of the present invention is to provide a cooling device capable of exhibiting a well-balanced air-cooling effect while the moving body is traveling and when the moving body is stopped by further enhancing the cooling effect by the wind while the moving body is traveling. Especially.

[0006]

The cooling device according to the present invention is configured as follows in order to solve the above-mentioned problems. That is, the cooling device according to claim 1 has the side wall 1
A housing 1 having a window hole 11 in the 0 and a side wall 10 of the housing 1.
The heat transfer block 2 installed so as to close the window hole 11 and an appropriate number of heat transfer blocks 2 installed substantially horizontally to the heat transfer block 2 so that the heating unit 30 is substantially parallel to the side wall 10 of the housing 1. The heating portion 30 is provided to the loop-shaped heat pipe 3 and the portion of the heat transfer block 2 that does not face the inside of the housing 1.
Radiating fins 2 provided along the length direction of the
0 is provided.

An electric component cooling device according to a second aspect of the invention is attached to a casing 1 having a window hole 11 in a side wall 10 and a side wall 10 of the casing 1 so as to close the window hole 11. A heat transfer block 2a in which a suitable number of holes 2b are formed substantially horizontally so as to be substantially parallel to the pipes, a pipe 3a whose ends are communicated with both ends of the hole 2b, and the pipe 3a is bent. The heat transfer block 2a is provided with a large number of heat radiation fins 2c provided along the length direction of the holes 2b in a portion of the heat block 2a not facing the housing 1.
It is characterized in that an appropriate amount of hydraulic fluid is enclosed in a closed system consisting of the hole 2b and the pipe 3a.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a cooling device in a casing according to the present invention will be described with reference to FIGS. First Embodiment FIG. 1 is a partial plan view of a cooling device according to a first embodiment, and FIG. 2 is a partially cutaway front view thereof.

A window hole 11 is formed on one side wall 10 of the hermetically sealed housing 1, and a heat transfer block 2 made of a metal material having high heat conductivity is attached to the window hole 11 so as to close the window hole 11. Has been. Specifically, a flange 21 is formed on the peripheral edge of one surface of the heat transfer block 2, the flange 21 is overlapped with the outside or inside of the peripheral edge of the window hole 11, and the overlapping portion of both is screwed. . The heat transfer block 2 in this embodiment is a block made of an aluminum alloy having a height of 250 mm, a width of 300 mm, and a thickness of 45 mm except for the flange 21.

In the heat transfer block 2, heating portions 30 of a plurality of loop-shaped heat pipes 3 are provided on the side wall 10 of the housing 1.
The heat pipe 3 is mounted so as to be substantially parallel and horizontal, and a large number of plate-shaped heat radiation fins 32 are attached to the horizontal heat radiation portion 31 of the heat pipe 3.
The heat pipes 3 are arranged so as to be inclined at about 7 ° C. so that the heating unit 30 side is lower than the heat radiating unit 31 and are vertically overlapped at a predetermined interval.
Penetrates the heat transfer block 2 in a state orthogonal to the thickness direction. In this embodiment, each heat pipe 3 is a copper pipe having an outer diameter of 15.88 mm connected in an annular shape and bent into the shape shown in the drawing, and the fins 32 are made of a copper plate.

In the heat transfer block 2, a plurality of heat-generating electric components 4 are attached to the inside of the housing 1 by screws (not shown), and the heating portion 30 of the heat pipe 3 is provided on the opposite side. A large number of radiating fins 20 are integrally formed along the length direction of. The radiation fin 20
Can be attached to the heat transfer block 2 by screws (not shown), welding, or brazing.

In the cooling device of the first embodiment, as described above, the heat-generating electric component 4 is attached to the portion of the heat transfer block 2 which faces the housing 1, and the heating portion 30 of the heat pipe 3 is a moving body. The casing 1 is used by attaching it to the floor lower surface 6 of a moving body such as an electric vehicle so as to be along the moving direction. In this installed state, when the moving body is in a horizontal posture, the heat pipe 3
The heating unit 30 of the above is also substantially horizontal. In the installation state as described above, heat generated from the electric component 4 and other components (not shown) installed in the housing 1 is transferred to the heating unit 30 of the heat pipe 3 via the heat transfer block 2. A part of the heat is carried to the heat radiation part 31 by the phase change of the working fluid inside, and is dissipated to the atmosphere through the heat radiation fins 32 of the heat radiation part 31. Further, another part of the heat is dissipated into the atmosphere through the heat dissipation fins 20 of the heat transfer block 2.

In the above-mentioned installed state, the traveling direction of the electric vehicle or the like is along the arrow a in FIG. 1, so that the traveling wind due to the traveling is directed to the radiation fins 32 attached to the radiation portion 31 of the heat pipe 3. Hit almost right angle,
Most radiating fins 32 only contact their ends. However, since the radiating fins 20 provided on the heat transfer block 2 are along the direction of the traveling wind, the traveling wind while the vehicle is traveling contacts the radiating fins 20 evenly.

That is, the radiation fins 3 of the heat pipe 3
Although it is not possible to expect a great improvement in the heat radiation effect due to the traveling wind received by 2, the great radiation effect due to the traveling wind received by the heat radiation fins 20 of the heat transfer block 2 can be expected. Further, the heat dissipation fins 20 of the heat transfer block 2 also improve the heat dissipation effect when the vehicle or the like is stopped. Therefore, according to the cooling device of the first embodiment, by providing the heat dissipation fins 20 on the heat transfer block 2, it is possible to further improve the air-cooling effect when the moving body such as a vehicle is running, and at the same time, move the moving body. A well-balanced air-cooling effect can be expected when the vehicle is stopped and running. Therefore, the device can be further downsized by improving the cooling effect as described above. further,
Insufficient cooling at the time of dry-out of the heating portion 30 of the heat pipe 3 can be compensated for by the radiation fins 20 of the heat transfer block 2, and the partition plate 12 is not used as in the prior art of FIG. Since 2 covers the window hole 11 and forms a part of the side wall of the housing, deterioration of the housing due to fatigue of the partition plate due to the weight of the heat transfer block or the heat pipe can be prevented.

Second Embodiment FIG. 3 is a partially cutaway plan view showing a second embodiment of the cooling device according to the present invention. On the side wall 10 of the closed casing 1,
The heat transfer block 2a is attached so as to close the window hole 11 formed in the side wall 10.
In a, a plurality of holes 2b are formed substantially horizontally so as to be substantially parallel to the side wall 10 of the housing 1. Heat transfer block 2a
Both ends of each hole 2b are fluid-tightly connected to both ends of a copper pipe 3a bent into a substantially C shape. Each closed system consisting of each hole 2b and each pipe 3a is vacuum degassed by an appropriate means, and an appropriate amount of working fluid (not shown, such as water, alternative CFCs or alcohol) is enclosed inside them. In the heat transfer block 2a,
A heat-generating electric component 4 is attached to a portion facing the inside of the housing 1, and a large number of heat radiation fins 2c are formed on a portion on the opposite side thereof along the length direction of the hole 2b.

Each hole 2b and each pipe 3a of the heat transfer block 2
Each form a continuous loop-shaped heat pipe 3, each hole 2b of the heat transfer block 2 constitutes a heating portion 30, and an intermediate portion 3b of the pipe 3a constitutes a heat radiation portion 31. The heat dissipation part 31 which is the intermediate part 3b of the pipe 3a.
A large number of plate-shaped fins 32 are attached to the. The cooling device of the second embodiment is similar to the cooling device of the first embodiment, such that the hole 2b of the heat transfer block 2a, which is the heating unit 30 of the heat pipe 3, is along the moving direction of the moving body. The housing 1 is attached to the lower surface of the floor of a moving body such as the one used.

According to the cooling device of this embodiment, since the hole 2b of the heat transfer block 2a forms the heating portion of the heat pipe 3, the contact thermal resistance of this portion is extremely small, and the cooling of the first embodiment is performed. The heat transfer efficiency is higher than that of the device. Other configurations, operations, and effects are almost the same as those of the cooling device of the first embodiment, and therefore their explanations are omitted.

Other Embodiments Although the heat radiation part 31 of the loop-shaped heat pipe 3 in the first embodiment is one, this heat radiation part 31 is the heating part 3.
If it is in communication with 0, it can be carried out even if a plurality of lines are connected. In each embodiment, the heat radiation fin 32 attached to the heat radiation portion 31 is not limited to the shape described above,
Honeycomb-shaped and other structures can be used. Further, the heat radiation fins 20 or 2c provided on the heat transfer block 2 or 2a are not limited to the above-described shapes, but may be honeycomb-shaped ones or other structures as long as they are parallel to the heating unit 30. Can be used.

[0019]

According to the cooling device of claim 1 of the present invention,
For example, by attaching a heat-generating electric component to the portion of the heat transfer block facing the inside of the housing, by using the housing attached to the outside of the moving body so that the heating portion of the heat pipe is along the moving direction of the moving body, The following effects are achieved. That is, first, by providing the radiation fins in the portion of the heat transfer block opposite to the portion facing the inside of the housing so as to be parallel to the heating portion of the heat pipe, air cooling during traveling of a moving body such as a vehicle is achieved. The effect can be further improved, and a well-balanced air cooling effect can be obtained while the moving body is stopped and running. Secondly, the device can be made more compact by improving the cooling effect as described above. Third
In addition, the insufficient cooling at the time of dry-out of the heating portion of the heat pipe can be compensated by the radiation fins of the heat transfer block.
Fourth, the partition plate is not used as in the prior art, and a part of the side wall of the heat transfer block is formed so as to close the window hole of the housing. Therefore, the weight of the heat transfer block and the heat pipe is reduced. It is possible to prevent the deterioration of the housing due to the fatigue of the partition plate due to.

According to the cooling device of the second aspect, in addition to the same effects as the cooling device of the first aspect, the following effects are exhibited. That is, in the cooling device according to the second aspect, since the heat transfer block directly forms the heating part of the heat pipe, there is no problem of contact heat resistance between the heating part and the heat transfer block. The heat exchange capacity is further improved.

[Brief description of drawings]

FIG. 1 is a partial plan view of a cooling device according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway front view of the cooling device of FIG.

FIG. 3 is a partially cutaway plan view of a cooling device according to a second embodiment of the present invention.

FIG. 4 is a partial plan view of a conventional cooling device of this type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 10 Side wall 11 Window hole 12 Partition plate 2, 2a Heat transfer block 2b Hole 20, 2c Radiating fin 3 Heat pipe 30 Heating part 31 Radiating part 32 Radiating fin 3a Pipe 3b Intermediate part 4 Exothermic electronic component 5 Endothermic block 6 Underside of electric vehicle floor

Claims (2)

[Claims] 1. A housing 1 having a window hole 11 in a side wall 10, a heat transfer block 2 attached to the side wall 10 of the housing 1 in a state of closing the window hole 11, and a heating unit 30 in the housing. An appropriate number of loop-shaped heat pipes 3 mounted substantially horizontally to the heat transfer block 2 so as to be substantially parallel to the side wall 10 of the heat transfer block 1, and to the portion of the heat transfer block 2 that does not face the housing 1. A cooling device in a housing of a moving body, comprising: a large number of heat radiation fins 20 provided along a length direction of the heating unit 30. 2. A housing 1 having a window hole 11 in a side wall 10, and a proper number of holes attached to the side wall 10 of the housing 1 so as to close the window hole 11 and substantially parallel to the side wall 10. In the housing 1 of the heat transfer block 2a, a heat transfer block 2a in which 2b is formed substantially horizontally, a pipe 3a whose ends are communicated with both ends of the hole 2b, and which is bent. A large number of radiating fins 2c provided along the lengthwise direction of the hole 2b are provided to the non-facing portion, and an appropriate amount of hydraulic fluid is provided in the closed system composed of the hole 2b of the heat transfer block 2a and the pipe 3a. A cooling device inside a housing of a moving body, characterized in that