A spray evaporation system for low-temperature heating of air source heat pumps and air conditioners

Abstract

The invention relates to an atomizing evaporating system for low-temperature heating of an air source heat pump and an air conditioner, comprising a compressor, a heat exchanger, a liquid storage tank, an expansion valve, an atomizing evaporator and an evaporator. The heat energy dissipated normally by the exhaust pip of the compressor is utilized, the liquid drops are atomized and evaporated by the sandwich layer of the evaporator, no electric heating and other auxiliary energy is used, and the evaporation cost is reduced. In addition, the one-time atomizing evaporating is adopted on the basis of the one-time evaporating by the evaporator of the existing system, so that two-time evaporating is realized. Due to the adoption of the two-time evaporating, the low-temperature gas-liquid refrigerant medium is fully evaporated, the evaporating efficiency is improved, and sufficient refrigerant gas is supplied to the compressor of an air conditioner for low-temperature heating, so that the compressor can heat normally and stably at the low temperature of lower than 5 DEG C below zero, and the efficiency of heating by the heat pump of the air conditioner at the low temperature of lower than 5 DEG C below zero is guaranteed.

Description

technical field [0001] The invention relates to the field of low-temperature heating of air-source heat pumps and air conditioners, in particular to a spray evaporation system used for low-temperature heating of air-source heat pumps and air conditioners. Background technique [0002] The working principle of the air source heat pump and air conditioner is to use the low-temperature evaporation characteristics of the cold medium (such as R22 starts to evaporate at a low temperature of -46°C), and the heat in the air is sucked into the evaporator by the induced draft fan on the evaporator so that the embedded In the fins of the evaporator, the refrigerant medium in the copper tube absorbs the heat in the air and evaporates, so that the liquid in the refrigerant gas-liquid mixture evaporates into gas and enters the compressor, which is compressed by the compressor to generate high-temperature and high-pressure gas for heating. At this time, the equipment that produces hot or c...

AI Technical Summary

Problems solved by technology

[0003] At present, air source heat pumps and air conditioners cannot heat normally when the ambient temperature is lower than -5°C. The required sufficient amount of refrigerant gas cannot meet the conditions and requirements of the normal heating of the compressor, so it does not heat at low temperatures below -5°C. In addition, the current low-temperature air source heat pump must increase the evaporation of the system in order to increase the evaporation. area, thereby increasing product cost

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