High-stability heat pump system

Abstract

The invention discloses a high-stability heat pump system. The high-stability heat pump system comprises a compressor, a high-efficiency tank, an economizer, a main electronic expansion valve, an evaporator, a gas-liquid separator, an auxiliary electronic expansion valve, an electromagnetic valve, a sensor group and a controller. A compressor exhaust port, the high-efficiency tank, the economizer,the main electronic expansion valve, the evaporator, the gas-liquid separator and a compressor air suction port are sequentially connected to form a main circulation loop, the electromagnetic valve,an enthalpy-increasing electronic expansion valve, the economizer and a compressor liquid spraying port are sequentially connected to form an enthalpy-increasing bypass, a controller adjusts the opening degree of the main electronic expansion valve and / or the auxiliary electronic expansion valve according to control parameters collected by the sensor group. By adopting the high-stability heat pumpsystem, the controller can adjust the opening degree of the main electronic expansion valve and / or the auxiliary electronic expansion valve according to the control parameters collected by the sensorgroup, the flow of refrigerant fluids of the main circulation loop and the enthalpy-increasing bypass is reasonably controlled, and the heating stabilization and the protection of a compressor are achieved.

Description

technical field [0001] The invention relates to a heating system, in particular to a high-stability heat pump system. Background technique [0002] The heat pump system is a commonly used heating system. The basic principle is to compress the refrigerant into a high-temperature and high-pressure fluid through the compressor. The temperature of the water in the storage tank is raised for people to use. The refrigerant fluid flows out of the high-efficiency tank and enters the evaporator to be evaporated into gas. At this time, the air pressure is further reduced, and then it passes through the gas-liquid separator for gas-liquid separation, and finally flows back to the compressor from the suction port of the compressor to complete a cycle. Thermal cycling. [0003] The compressor is the core component of the heat pump system, which directly determines the heating capacity of the heat pump system. The compressor compresses the low-temperature and low-pressure refrigerant fl...

AI Technical Summary

Problems solved by technology

[0006] The existing heat pump system is too simple to adjust the main expansion valve of the thermal cycle circuit and the auxiliary expansion valve of the enthalpy-increasing bypass. Generally, it is only adjusted according to one or two parameters, without taking into account the heating effect and the protection of the compressor, resulting in heating The effect is unstable and the service life of the compressor is reduced

A single expansion valve control mode cannot meet the needs of different users, resulting in poor versatility of the heat pump system

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