Heat pipe and vapor compression composite system with self-operated capacity regulating reservoir

Abstract

The invention discloses a heat pipe and vapor compression composite system with a self-operated capacity regulating reservoir. The heat pipe and vapor compression composite system comprises an evaporator, a compressor, a condenser, a throttling device, a first bypass valve connected with the compressor in parallel and a second bypass valve connected with the throttling device in parallel, and theself-operated capacity regulating reservoir is arranged on an outlet pipeline of the condenser; the self-operated capacity regulating reservoir comprises a liquid storage cavity, a piston, a regulating cavity, a spring, an inlet connecting pipe end, an outlet connecting pipe end, a front limiting pin and a rear limiting pin, the inlet connecting pipe end and the outlet connecting pipe end are arranged above and below the liquid storage cavity respectively, the liquid storage cavity is isolated from the regulating cavity through the piston, and the piston is connected with the spring, and the front limiting pin and the rear limiting pin limit moving position of the piston. By means of the self-operated capacity regulating reservoir, it can be guaranteed that a heat pipe mode and a steam compression mode work under the optimal refrigerant filling amount, and it is guaranteed that the heat pipe mode and the steam compression mode operate efficiently.

Description

Technical field: [0001] The invention relates to a heat pipe and vapor compression composite system with a self-operated capacity-adjusting liquid storage device, which is suitable for heat dissipation of data centers, communication base stations, and electronic equipment, and belongs to the field of equipment thermal management and environmental control. Background technique: [0002] Heat pipe and vapor compression composite refrigeration technology is a refrigeration technology that integrates heat pipe cycle and vapor compression cycle. : 200810118209.2), solar air source heat pump system (a solar air source heat pump, application number: 201511029273.X), high-energy weapon cooling and other fields (a modular composite high-energy weapon cooling system and its control method, application number: 201710252599.1 ). The technology generally includes an evaporator, a condenser, a compressor, a throttling device, a first bypass branch arranged in parallel with the compressor...

AI Technical Summary

Problems solved by technology

However, usually the heat pipe mode requires a large amount of refrigerant charge, while the vapor compression mode requires a small charge amount, so it is difficult to ensure that the two working modes are at the optimal charge amount

When the charging amount is large, the vapor compression mode will have liquid accumulation, resulting in poor performance; when the charging amount is small, the heat pipe circulation mode cannot form a driving liquid column, and the evaporator will overheat, resulting in poor performance

Adding a traditional fixed-volume accumulator cannot solve this problem, because a large amount of refrigerant will still stay in the accumulator in the heat pipe mode and cannot participate in the cycle, and the fixed-volume accumulator usually reduces the circulation of the heat pipe. column

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