heat pump

Abstract

Disclosed is a heat pump. An oil filter is further arranged on a connecting pipe between an oil separator and an air suction opening of a compressor, and an exhaust opening of the compressor is sequentially connected with a gas and liquid separator and the air suction side of the compressor through a cooling energy storage device, a first electromagnetic valve (11) and a second throttling mechanism; when the temperature rise of the exhaust side is abnormal, the electromagnetic valve is opened, and through heat exchange of the cooling energy storage device and expansion of the second throttling mechanism, part of exhaust temperature can be rapidly reduced; a pipeline is further arranged between an outlet of an oil separator and a steering device and is connected to an auxiliary heat exchanger through the cooling energy storage device and a second electromagnetic valve and connected to the air suction side of the compressor through the second throttling mechanism and the gas and liquid separator; and when it is detected that the pressure rise of the exhaust side of the compressor is too rapid, the second electromagnetic valve is opened, the cooling energy storage device is operated, the heat exchanger is assisted, and the exhaust pressure is reduced.

Description

Technical field: [0001] The invention relates to the technical field of heat pump / refrigeration energy saving. Background technique: [0002] Heat pump is an energy-saving, environment-friendly and comfortable refrigeration system, which is widely used in factories, laboratories and public facilities. The system usually includes a closed circuit composed of a compressor, a four-way valve, an outdoor heat exchange device, a throttling mechanism, and an indoor heat exchanger. [0003] In the existing technology, when the heat pump unit runs for a certain period of time, the impurities in the oil accumulate, resulting in the accumulation of impure substances in the oil return pipeline, resulting in insufficient oil returned to the compressor, thus affecting the performance of the compressor and the performance of the unit Even burn out the compressor. And when the pressure on the high-pressure side of the compressor and the exhaust temperature are too high due to this, the so...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, when the heat pump unit runs for a certain period of time, the impurities in the oil accumulate, resulting in the accumulation of impure substances in the oil return pipeline, resulting in insufficient oil returned to the compressor, thus affecting the performance of the compressor and the performance of the unit Even burn out the compressor

And when the pressure on the high-pressure side of the compressor and the exhaust temperature are too high due to this, the solution in the prior art is to stop the compressor, wait for a period of time, and then start running

As a result, the operating efficiency of the system is affected, and the life of the heat pump unit is also reduced.

[0004] Moreover, since the compressor and its connecting pipeline need to be dismantled when the engine oil is blocked, the heat pump cannot be operated, and the process of disassembly and assembly also consumes a lot of processes and is expensive

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