High-power single-machine high-precision temperature control thermal control method and device with various working durations

Abstract

The invention provides a high-power single-machine high-precision temperature control thermal control method and device with various working durations. A high-power single machine has the characteristics of large power value and various working durations, the single machine needs stronger heat dissipation capability to dissipate heat when working to stabilize the working temperature of the singlemachine i at 20 minus or plus 2 DEG C, and the single machine needs to be kept at 10-30 DEG C when not working and needs a heater to compensate. According to the present invention, a motor is used fordriving to change the angles of a deployable electric control heat shield and a heat dissipation surface, the temperature of the high-power single machine is controlled by changing a visual angle ofa high-power single machine heat dissipation surface and the space background, and when the high-power single machine works, the visual angle between the heat dissipation surface and the space background is increased, so that the heat dissipation capability of the heat dissipation surface is improved. When the high-power single machine is stored, the visual angle between the heat dissipation surface and the space background is reduced or the heat dissipation surface is closed, the heat dissipation capacity of the heat dissipation surface is reduced, and the storage temperature requirement under the condition of lower heater power consumption compensation is met. According to the present invention, the characteristics of light weight, strong temperature control capacity, small quantity andhigh reliability, and being able to adapt to various working hours and mature movable parts, are realized.

Description

technical field [0001] The invention relates to the technical field of aerospace thermal control, in particular to a thermal control method and device for single-machine high-precision temperature control with high power and multiple working hours. Background technique [0002] When the high-power stand-alone unit is working, it needs a strong heat dissipation capacity to dissipate heat, so that its working temperature is stable at 20±2°C. When the stand-alone unit is not working, it must be kept at 10-30°C. It requires heater compensation and has a variety of working hours. The general thermal control design method is to design a larger heat dissipation surface to meet the stand-alone temperature under high power density and high power value during stand-alone operation, and then design a high-power heater to compensate for the low temperature in the stand-alone storage state; or use phase change materials to utilize Phase change latent heat is used to control the temperatu...

AI Technical Summary

Problems solved by technology

The general thermal control design method is to design a larger heat dissipation surface to meet the stand-alone temperature under high power density and high power value during stand-alone operation, and then design a high-power heater to compensate for the low temperature in the stand-alone storage state; or use phase change materials to utilize Phase change latent heat is used to control the temperature of a single machine, which has the disadvantages of heavy weight of the phase change device and poor adaptability to various working hours; or the use of pump-driven fluid circuits for temperature control, strong heat dissipation capability, high temperature control accuracy, and adaptability to various working hours, etc. Advantages, but there are also defects such as end-of-life of pump-driven high-speed moving parts, poor reliability, complex fluid circuit structure, and heavy weight

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