JPS60245993A - Structure of heat dissipation through heat pipe of exothermic sealed vessel - Google Patents

Abstract

PURPOSE:To dissipate heat in the sealed vessel efficiently by a method wherein a part of outer shell, forming the sealed vessel accommodating exothermic equipment, is formed detachably by a flat plate, the heating equipment is provided near the flat plate and the heat pipe is attached to the flat plate closely. CONSTITUTION:In the heat dissipating structure, dissipating the heat of the exothermic equipments 1a-1c accommodated in the sealed vessel 2 through the heat pipe 5, a part of the outer shell forming the sealed vessel 2 is formed detachably by the flat plate 4 and the heating equipments are arranged near the flat plate 4 while the heat pipe 5 is attached to the outside surface of the flat plate 4 closely. According to this structure, the heat in the sealed vessel is dissipated efficiently and the heat is discharged out of a proper external position. The heat pipe is arranged on the outer surface side of the sealed vessel, therefore, attaching and detaching of the heat pipe may be facilitated, a time required for assembling may be reduced and working time may also be reduced upon maintenance.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a heat dissipation structure using a heat pipe for a heat-generating closed container that radiates heat inside the closed container housing heat-generating devices such as motors and servo amplifiers to the outside. be.

[Conventional technology]

Multi-axis drive devices used in robots and the like are composed of heat-generating devices such as motors and servo amplifiers, and these devices may be used in harsh environments, such as temperatures of 70° C. and humidity of 100° C. In this case, the heat generating device is housed in a closed container to prevent the influence of humidity of 100 degrees Celsius. Further, the airtight container is required to be lightweight and compact. Therefore,
Although it is necessary to radiate heat to prevent performance deterioration due to heating of the heat-generating device, heat radiation may be insufficient depending on the heat dissipation of the closed container itself. For this reason, heat pipes are used to radiate heat to the outside.

As is well known, a heat pipe transmits absorbed heat to a distant location, and by providing a cooling means at this location, the heat inside the closed container is actively radiated. However, in the prior art, there was no simple heat dissipation structure that allows the heat pipe to effectively absorb the heat inside the closed container. Therefore, there is a need for a heat dissipation structure that allows the heat pipe to be easily attached and detached, is easy to maintain, and has high heat transfer efficiency.

[Problem that the invention seeks to solve]

The present invention has been made in view of the above-mentioned circumstances.1.The purpose of the present invention is to improve the heat transfer efficiency from the sealed container to the heat vibrator, and to provide a heat dissipation structure using a heat pipe for a heat-generating sealed container that is easy to attach and detach and is easy to maintain. It's about doing.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention forms a part of the outer panel forming an airtight container for housing a heat-generating device from a removable flat plate, arranges the heat-generating device near the flat plate, and arranges the heat-generating device in the vicinity of the flat plate. This method uses a heat dissipation structure formed by closely attaching a heat pipe to a flat plate.

[Effect]

Since heat pipes are cylindrical and most heat generating devices are not formed in a flat shape, effective heat transfer cannot be obtained even if the heat pipe is brought into direct contact with the heat generating device. However, the flat plate and the heat pipe can be brought into close contact with each other, and the heat from the flat plate can be effectively absorbed by the heat pipe. Furthermore, since a heat generating device is disposed near the flat plate, the heat inside the hermetic container is concentrated on the flat plate, and the heat from the hermetic container is rapidly radiated.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, airtight containers 2 housing heat-generating devices such as a motor 1a and a servo amplifier 16 drive mechanism 1c are arranged side by side with a narrow gap between them, and each KFi multi-axis manipulator 3
protrudes and is connected to the inside. Since the gap between the closed containers 2 is narrow, no cooling means can be disposed between them.

The airtight container 2 is formed into a box shape, and a portion of its outer panel is formed from a detachable flat plate 4. The flat plate 4 is preferably a thin plate with excellent heat conductivity. The above-mentioned heat generating device is arranged near this flat plate 4. Therefore, other equipment that generates relatively little heat is placed in other spaces of the closed container.

The heat pipe 5 is mounted in close contact with the flat plate 4 by being held in a half-split bracket 6 and a half-split metal fitting 7, which will be explained later. Further, fins 8 of cooling means are connected to an appropriate position outside the above-mentioned gap on one end side of the heat pipe 5, and a fan 9 is disposed near the fins 8. ' As shown in FIG. 2, the flat plate 4 is removably attached to the closed container 2 side by bolts 10, and is insulated from the closed container 2 side by a sealing material 16 and 14. A half-split bracket 6 is integrally formed on the outer surface of the flat plate 4. A semi-circular groove 6a for supporting the heat pipe 5 is formed in the half-split bracket 6 on its open side. The half-split metal fitting 7 is disposed facing the half-split bracket 6, and a semi-circular arc groove 7a having the same shape as the semi-circular groove 6a is provided on the opposite side.
is formed. The half bracket 6 and the half bracket 7 are bolts 11
connected to each other. As described above, the heat pipe 5 is interposed between the half-split bracket length and the half-split metal fitting 7, and can be easily attached and detached by removing the bolts 11. Moreover, between the heat pipe 5, the half-split bracket 6, and the half-split metal fitting 7, there are half-split pushers z12a and 1.
2b is interposed. .

The half-split bushes 12a and 12b are formed in a half-split structure for convenient insertion into the heat pipe.

The half bushes 12a and 12b have semicircular arc grooves 6a.

It is attached to both of 7h so that it may be constructed on a t clove or the like. Further, the half bushes 12a and 12b are made of a flexible material with excellent heat conductivity, such as pure aluminum.

According to the above structure, when the half-split fitting 7 is tightened to the half-split bracket 6 using the bolt 11, the half-split bushes 12a, 12b are deformed, and the heat pipe 5, the half-split bushes 12a, 12b, and the half-split fitting are deformed. 7. The half-split brackets 6 are brought into close contact with each other.

Next, the operation of this embodiment will be explained.

As mentioned above, the heat of the heat generating equipment is transmitted to the flat plate 4 and concentrated. Since the half-split bracket 6 is formed integrally with the flat plate 4, heat is transferred thereto, and the heat is transmitted to the heat pipe 5 via the half-split bush 12a112b. Further, the heat transmitted to the half metal fitting 7 by the bolt 11 etc. is transmitted to the heat pipe 5 via the half bushes 12a and 12b. Therefore, the heat in the closed container 2 is effectively absorbed by the heat pipe 5, radiated from the fins 8 of the cooling means, and actively radiated by the fan 9.

Since the heat pipe 5 is used, the cooling means can be provided at an appropriate position, and the space yj between the closed containers 2 needs only to have an area where the heat vibrator 5 and the like can be attached and detached.

In this embodiment, the above structure is used as a means for bringing the heat pipe 5 and the flat plate 4 into close contact with each other, but the present invention is not necessarily limited to this.

As is clear from the above explanation, the following effects can be achieved according to the present invention.

(1) Heat inside the closed container is efficiently radiated and released from an appropriate external location.

(2) Since the heat pipe is disposed on the outer surface of the sealed container, it is easy to attach and detach, reducing assembly time and also reducing work time during maintenance.

(3) When the heat pipe is not needed, the flat plate can be removed and easily replaced with a cover plate that does not have a heat pipe attached.

(4) Simple structure, easy to implement, and inexpensive.

[Brief explanation of drawings]

Fig. 1 is a plan view of one embodiment of the present invention, and Fig. 2 is a plan view of an embodiment of the present invention.
-N-line cross-sectional view. 1a, Ib, 1c... Heat generating device, 2... Airtight container,
4...Flat plate, 5...Heat pipe, 6...Half bracket, 7...Half bracket, 8...Fin, 9...Fan, 10.11...Pol) , 12a, 12b...half bushing, 13°14...sealing material. Figure 1 2nd

Claims (1)

[Claims] In a heat dissipation structure that radiates heat from a heat generating device housed in a sealed container using a heat pipe, a part of the outer panel forming the sealed container is formed from a removable flat plate, and the heat generating device is placed near the flat plate. A heat dissipation structure using a heat pipe for a heat generating closed container, characterized in that the heat pipe is closely attached to the outer surface of the flat plate.