Enhanced vapor injection system, control method and device thereof, heating equipment and electronic equipment

Abstract

The invention discloses an enhanced vapor injection system, a control method and device thereof, heating equipment and electronic equipment. The enhanced vapor injection system includes a compressor and an intermediate heat exchanger; and an outlet of an auxiliary path of the intermediate heat exchanger is connected with a vapor injection inlet of the compressor, and an inlet of the auxiliary pathof the intermediate heat exchanger is connected with an outlet of a main path of the intermediate heat exchanger through an electronic expansion valve and a mechanical throttling component which areconnected in series. According to the enhanced vapor injection system, through the mechanical throttling component on the auxiliary path and connected with the electronic expansion valve in series, the adjusting range of the electronic expansion valve is extended, the throttling pressure reducing effect is enhanced, therefore, the liquid return risk of the vapor injection inlet of the compressor can be reduced, and the operation reliability of the compressor is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air injection enthalpy increasing system and its control method, device, heating equipment, and electronic equipment. Background technique [0002] With the improvement of living standards, consumers' demand for indoor heating is increasing. At present, the mainstream heating equipment on the market is electric heating, gas heating, and heat pump. Among them, the heat pump heating equipment has attracted the attention of the market due to its excellent energy-saving performance. Generally speaking, the biggest disadvantage of the heat pump heating equipment is its The heating capacity will decrease as the outdoor ambient temperature decreases, so most heat pump heating equipment adopts electric auxiliary heating or air injection to increase the heating capacity in low temperature environments, and air injection to increase enthalpy is undoubtedly more energy-saving W...

AI Technical Summary

Problems solved by technology

At present, in many gas injection enthalpy systems, the auxiliary circuit only uses electronic expansion valves to adjust the amount of refrigerant entering the auxiliary circuit. There is a risk of liquid return at the air injection inlet of the compressor, which will affect its operational reliability; Insufficient flow causes liquid return to the air inlet of the compressor, which affects its reliable operation

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