Heat control system of high-power satellite-borne Stirling refrigerator
A refrigerator and high-power technology, applied in the field of spacecraft thermal control, can solve the problems of lack of active temperature adjustment capability, insufficient heat dissipation surface, long-term work, etc., to improve the ability of active temperature control and long-distance heat transmission, Effect of improving heat transfer efficiency and increasing contact area
Active Publication Date: 2014-01-01
SHANGHAI SATELLITE ENG INST
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Problems solved by technology
The on-board Stirling refrigerator has the characteristics of large heat generation, high temperature control requirements, and long-term work, especially under the harsh conditions of insufficient heat dissipation surface caused by poor camera installation position, traditional passive thermal control methods can no longer meet the requirements. mission requirements
At present, the existing thermal control methods are generally to install copper strips or heat pipes on the Stirling refrigerator to conduct heat to the radiation cooling plate for dissipation. This scheme is simple in principle, but it is not suitable for temperature control and long-distance heat dissipation in harsh environments. The installation of copper strips or heat pipes also has Dingcheng realizability problems, and it does not have the ability to actively adjust the temperature
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[0031] The following is a detailed description of the embodiments of the present invention: this embodiment is implemented on the premise of the technical solution of the present invention, and provides detailed implementation methods and specific operation processes. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.
[0032] Please also see figure 1 with figure 2 .
[0033] This embodiment provides a thermal control system for a high-power space-borne Stirling refrigerator, including a compressor and its support, an expander and its Machine support heat pipe, sun-facing heat sink, loop heat pipe, electric heater and thermistor, the compressor and the electric heater and thermistor, and between the expander and the electric heater and thermistor are clamped And heat conduction installation, the up...
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The invention provides a heat control system of a high-power satellite-borne Stirling refrigerator. A compressor, an expander, an electric heater and a thermistor are tightly clamped and installed in a heat conducting way. The upper end surface of a compressor support and a refrigerator installation base are installed in the heat conducting way. The lower end surface of the compressor support and one end of a compressor support heat pipe are connected in an external contact way. The other end of the compressor support heat pipe and a ground-oriented radiating plate are installed in an external contact and heat conducting way. The upper end surface of an expander support and the refrigerator installation base are installed in the heat conducting way. The lower end surface of the expander support and one end of an expander support heat pipe are connected in an external contact way. The other end of the expander support heat pipe and a sun-oriented radiating plate are installed in the external contact and heat conducting way. A loop heat pipe and the sun-oriented radiating plate are installed in the heat conducting way. By combining the technical means of active temperature control and passive temperature control, under the situation that a radiating surface is not enough, a sun-oriented surface can be utilized for radiation, the loop heat pipe is used for actively regulating temperature and the problem of high-power radiation of the Stirling refrigerator under the severe environment on a satellite is solved.
Description
technical field [0001] The invention relates to the technical field of spacecraft thermal control, in particular to a thermal control system for a high-power space-borne Stirling refrigerator. Background technique [0002] The operating temperature of the detector of the remote sensing satellite infrared camera is required to reach 100K. The solution of installing a high-power Stirling refrigerator inside the camera to provide cooling capacity poses a new challenge to the cooling of the refrigerator itself. The on-board Stirling refrigerator has the characteristics of large heat generation, high temperature control requirements, and long-term work, especially under the harsh conditions of insufficient heat dissipation surface caused by poor camera installation position, traditional passive thermal control methods can no longer meet the requirements. mission requirements. At present, the existing thermal control methods are generally to install copper strips or heat pipes on...
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IPC IPC(8): F25B49/02
Inventor 张晶晶江世臣赵小翔
Owner SHANGHAI SATELLITE ENG INST