Heat pump system using evaporative cooling

Abstract

The invention discloses a heat pump system using evaporative cooling. The system involves a compressor, an indoor heat exchanger, an outdoor heat exchanger, a first throttle, a second throttle, a solenoid valve, a three-way regulating valve, a water pump, a sprayer, an evaporator for concentration, a crystallization separator and a four-way reversing valve, wherein the heat pump system outdoor heat exchanger uses the evaporative cooling technique, an ethylene glycol solution is sprayed on the outer surface of the heat exchanger, the evaporator for concentration is not operated when the systemis operated in the summer, and during winter operation, a refrigerant is in heat exchange with the sprayed ethylene glycol solution and outdoor air in the outdoor heat exchanger, the evaporator for concentration is used for cooling the ethylene glycol solution below a freezing temperature and realizing the improvement of concentration of the ethylene glycol solution together with the crystallization separator, so that the ethylene glycol solution participating in the heat exchange of the outdoor heat exchanger is not frozen. According to the system, the heat exchange efficiency of an outdoor evaporator in winter is improved, and the frosting phenomenon does not occur when the outdoor evaporator is operated in winter.

Description

technical field [0001] The invention belongs to the technical field of heat pump air conditioners, and in particular relates to a heat pump system using evaporative cooling. Background technique [0002] With the development of science and technology, the problems of environmental protection and lack of resources have become increasingly prominent worldwide. Improving energy efficiency and reducing the consumption of fossil energy are currently hot issues. A heat pump is an energy device that obtains low-grade heat from environmental media and waste heat resources, and improves the heat grade through a suitable thermodynamic cycle for use by end users. It has high energy utilization efficiency and is an energy-saving device worthy of promotion. [0003] Chinese Patent Publication No. CN107110516A discloses a heat pump system using an evaporative cooler, which combines a condenser and a water-cooled cooling tower. When running in summer, the evaporative cooler can provide mor...

AI Technical Summary

Problems solved by technology

The heat pump system will face problems when it operates in heating mode in winter. If the ambient temperature is close to zero, not only will it be difficult to spray water on the outdoor side heat exchanger, but also the outer surface will freeze and the thermal resistance will increase. If there is no deicing measure, the transmission Thermal conditions will continue to deteriorate until the system becomes inoperable

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