Low-temperature enthalpy increasing system and working method thereof

Abstract

The invention discloses a low-temperature enthalpy increasing system and a working method thereof. The enthalpy increasing system comprises a compressor, a four-way valve, a condenser, a throttling part, an enthalpy increasing heat exchanger assembly and a gas-liquid separator, wherein the enthalpy increasing heat exchanger assembly is divided into a first area and a second area, the first area is provided with a plurality of heat exchangers, the second area is provided with a plurality of heat exchangers, the heat exchangers of the first area are connected with the heat exchangers of the second area, and the four-way valve is provided with a port C, a port D, a port E and a port S. The low-temperature enthalpy increasing system has the advantages that system coolants is completely evaporated in the enthalpy increasing heat exchanger assembly as much as possible, the circulation quantity of the system coolants is increased, and the system can normally operate under a low-temperature environment; the enthalpy increasing heat exchanger assembly comprises multiple heat exchangers, each heat exchanger can be used to absorb one heat source or the heat exchangers can be used to absorb the same heat source, multi-heat-source heating is achieved, and system heating capacity is increased.

Description

technical field [0001] The invention relates to the technical field of air-conditioning heat pumps, in particular to a low-temperature enthalpy increasing system and a working method thereof. Background technique [0002] As people's requirements for living standards are getting higher and higher, air-energy water heaters have emerged. Especially in recent years, the market for air-energy water heaters has developed rapidly, especially in the south of the Yangtze River (such as Guangdong, Guangxi, Fujian, Hunan, etc.) , Zhejiang and other places), but due to the influence of ambient temperature, the use of air-energy water heaters is not good in places north of the Yangtze River (when the ambient temperature is lower than -20°C, the energy efficiency ratio of air-energy heat pumps is very low, Some products will have low pressure protection or exhaust protection when operating in low temperature environment, and the unit cannot operate normally), so the utilization rate of a...

AI Technical Summary

Problems solved by technology

However, this enthalpy-increasing technology will reduce the amount of refrigerant flowing to the outdoor evaporator, and as the ambient temperature decreases, the refrigerant flow in the system's enthalpy-increasing flow path will gradually increase, which will lead to a gradual decrease in the amount of refrigerant flowing to the outdoor evaporator. The enthalpy-increasing system absorbs less heat on the heat source side, which affects the energy efficiency of the unit

Images