CN105658035B - A kind of special-shaped heat conduction rope with installation fin - Google Patents

Abstract

It is a kind of to be related to aeronautical and space technology space heat conduction field with the special-shaped heat conduction rope for installing fin, mainly it is big can not to provide thermal resistance between Plane Installation or component and heat conduction rope for solution component, the radiating requirements of component heating position irregular structure realize that the component for certain specific structure designs heat conduction installation interface.The heat conduction rope includes：Wrap up head, copper braid over braid and the installation band of radiating element；Head and the installation band of package radiating element are fixed in copper braid over braid both ends respectively；The installation band is mounted on low-temperature receiver.The invention can be directed to the respective design of the shape progress head construction of radiating element connecting portion；The present invention does not need mounting bracket and alleviates product own wt, and after the thermal resistance of simultaneity factor reduces, the smaller that the sectional area of heat conduction rope can design, the weight of heat conduction rope is also reduced.Space product launching costs are high, which can be greatly lowered launching costs while realizing effectively heat dissipation.

Description

A special-shaped heat conduction cable with mounting fins

technical field

The invention relates to the space heat conduction field of aerospace technology, in particular to a special-shaped heat conduction cable with fins installed.

Background technique

As the power of spacecraft continues to increase, the requirements for heat dissipation also increase accordingly. Among them, the power consumption of components is gradually increasing, and the demand for heat dissipation is increasing. Especially for components with small mass and high calorific value, the temperature rises rapidly. Designing high-emissivity coatings and installing radiators can no longer meet their heat dissipation needs.

Installing thermal cables is an effective way to achieve rapid heat dissipation of high-power devices. However, due to the limitation of the head structure of the thermal cables, currently the thermal cables can only be installed on the flat part of the heat sink. For devices without a mounting plane (such as a circular motor stator), it is necessary to install a mounting bracket for the heat conduction cable, and use the mounting bracket to provide a plane to realize the indirect connection between the heat conduction cable and the heat dissipation device to form a heat dissipation channel. Compared with directly installing the heat conduction cable on the heat sink, this design significantly increases two thermal resistances, that is, the contact thermal resistance between the mounting bracket and the heat dissipation device and the thermal resistance of the mounting bracket itself, and the utilization efficiency of the heat conduction cable is greatly reduced. Therefore, it is necessary to increase the cross-sectional area of the heat conduction cable, which increases the weight of the heat conduction cable; at the same time, setting the mounting bracket increases the weight of the equipment and increases the launch cost of the equipment.

Contents of the invention

In order to solve the problems existing in the prior art, the present invention provides a special-shaped heat conduction cable with mounting fins, which mainly solves the problem that the components cannot be mounted on a plane or the thermal resistance between the components and the heat conduction cable is large, and the heating parts of the components The heat dissipation requirements of irregular structures can realize the design of heat conduction installation interface for components with a specific structure.

The technical solution adopted by the present invention to solve technical problems is as follows:

A special-shaped heat conduction cable with mounting fins, the heat conduction cable includes: a head wrapping a heat dissipation device, a copper braid and a mounting belt; both ends of the copper braid are respectively fixed to wrap the head of the heat dissipation device and the installation belt; The installation belt is installed on the cold source.

The beneficial effects of the present invention are:

a) For rectangular heat dissipation devices, this invention improves the single-side contact of the previous heat conduction cable design to at least 4-side contact, which overcomes the problem of high temperature of the device on the opposite side where the heat conduction cable is installed and uneven temperature of the entire device using the traditional heat conduction cable for heat dissipation , at the same time, the thermal resistance of the device and the thermal conductor can be reduced to less than half of that of the traditional thermal conductor;

b) For the circular heat dissipation device, for the situation that the heat dissipation cable can be installed by installing the heat conduction cable mounting frame, and then the heat conduction cable is used for heat dissipation, the invention directly establishes the passage of the heat dissipation device and the heat dissipation surface, and reduces the thermal resistance from the device to the heat dissipation surface, which is beneficial Rapid heat dissipation;

c) There is no need for mounting brackets to reduce the weight of the product itself. At the same time, after the thermal resistance of the system is reduced, the cross-sectional area of the heat conduction cable can be designed to be smaller, and the weight of the heat conduction cable is also reduced. The launch cost of aerospace products is high, and this product can greatly reduce the launch cost while achieving effective heat dissipation;

d) According to the invention, the corresponding design of the head structure can be carried out according to the shape of the connection part of the heat dissipation device.

Description of drawings

Fig. 1 is a front view of a special-shaped heat conduction cable with mounting fins when the heating device of the present invention is rectangular.

Fig. 2 AA cross-sectional view of the special-shaped heat conduction cable with mounting fins when the heating device of the present invention is rectangular.

Fig. 3 is the front view of the special-shaped heat conduction cable with mounting fins when the heating device of the present invention is circular.

Fig. 4 is a sectional view AA of a special-shaped heat conduction cable with mounting fins when the heating device of the present invention is circular.

In the figure: 1, the head of the rectangular heat dissipation device, 2, the copper braid, 3, the mounting belt, 4, the heating device, 5, the fins, 6, the mounting hole and 7, the head of the cylindrical heat dissipation device.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

A special-shaped heat conduction cable with mounting fins, the heat conduction cable includes: a head wrapping a heat dissipation device, a copper braid 2 and a mounting tape 3; both ends of the copper braid 2 are respectively fixed to wrap the head of a heat dissipation device and the installation tape 3; The head and the copper braid 2 are welded into a whole under vacuum conditions, and the mounting belt 3 is installed on the cold source. Wrap the head of the heat dissipation device and/or mount the fins 5 on the mounting strip. Mounting holes 6 are arranged on the fins 5 . The head wrapping the heat dissipation device has a thermal conductive filler to enhance heat transfer. The structure of the head wrapping the heat dissipation device is rectangular, circular or other irregular shapes. Both the head wrapping the cooling device and the copper braid 2 are pure copper materials with good thermal conductivity, such as red copper and oxygen-free copper.

The head of the heat conducting cable can be designed according to the shape of the heat dissipation device, such as the head 1 of the rectangular heat dissipation device and the head 7 of the circular heat dissipation device in the examples shown in Fig. 1 to Fig. 4 . Among them, it can be known from Figures 1 and 2 that the head 1 of the rectangular heat dissipation device is an inverted convex structure, and two fins 5 with mounting holes 6 are installed on both sides of the upper surface. The interior of the inverted convex structure is close to the The copper braid 2 is wrapped on the upper surface, and the heating device 4 is wrapped away from the upper surface; that is to say, the heating device 4 and the copper braid 2 are wrapped in the head 1 of the rectangular heat dissipation device and separated by a partition. Figure 3 and Figure 4 are also the same, the cylindrical heating element 4 and the copper braid 2 are wrapped in the head 7 of the circular heat dissipation element, separated by a partition. In addition, the head of the heat conduction cable can also be designed in different shapes according to different needs.

Claims (5)

1. A special-shaped heat conduction cable with mounting fins, characterized in that the heat conduction cable comprises: a head wrapping a heat dissipation device, a copper braid and a mounting tape; two ends of the copper braid are respectively fixed to wrap the heat dissipation device The head and the mounting band; the head and the braided copper band are welded into a whole under vacuum conditions, and the mounting band is installed on the cold source. 2 . The special-shaped heat conduction cable with mounting fins according to claim 1 , wherein the head and/or mounting strip of the wrapping heat dissipation device are provided with mounting fins. 3 . 3 . The special-shaped heat conduction cable with mounting fins according to claim 2 , wherein the mounting fins have mounting holes. 4 . 4. A special-shaped heat conduction cable with mounting fins according to claim 1, characterized in that the head of the wrapping heat dissipation device is provided with heat conduction filler. 5. A special-shaped heat conducting cable with mounting fins according to claim 1, characterized in that, the structure of the head wrapping the heat dissipation device is rectangular, circular or other irregular shapes.