Heat-pump water heater based on solar energy auxiliary air source

Abstract

The invention provides a heat-pump water heater based on a solar energy auxiliary air source, relating to a high-efficiency water heater which organically combines solar energy and an air source heat pump, uses solar energy as an auxiliary heat source and also can use air as a heat source of a heat pump system simultaneously. A refrigeration circulation loop comprises a compressor (1), a first heat exchanger (2), a liquid accumulator (3), a filter (4), a first electronic expansion valve (5), a fin tubular heat exchanger (6), a second electronic expansion valve (7), a second heat exchanger (8), a check valve (9), a hot air electromagnetic valve (10) and a defrost electronic expansion valve (11); a solar energy auxiliary heat source loop comprises a solar energy hear collector (19), a second heat exchanger (2), a second water pump (21), a fifth electromagnetic valve (18), a sixth electromagnetic valve (20); and a solar energy direct-heating water loop comprises a hot water accumulator (12), a first water pump (13), a first heat exchanger (2), a solar energy heat collector (19), a first electromagnetic valve (14), a second electromagnetic valve (15), a third electromagnetic valve (16) and a fourth electromagnetic valve (17).

Description

technical field [0001] The invention relates to a high-efficiency hot water production device which organically combines solar energy with an air source heat pump, uses solar energy as an auxiliary heat source, and simultaneously uses air as a heat source for a heat pump system. It belongs to the technical field of solar energy utilization, refrigeration and air conditioning system design and manufacture. Background technique [0002] With the development of the economy and the continuous improvement of people's living standards and hygiene standards, the proportion of domestic hot water in the rapidly growing energy consumption of buildings is increasing. At present, domestic hot water is mainly produced by various water heaters, and the types of water heaters mainly include electric water heaters, gas water heaters, and solar water heaters. From the perspective of the scientificity and rationality of energy utilization, electric water heaters directly convert high-grade e...

AI Technical Summary

Problems solved by technology

At present, in the solar-assisted air-source heat pump hot water system, solar energy is only used as the heat source of the air-source heat pump, and the grade of solar energy is further improved through heat pump power consumption to produce hot water, or the utilization of solar energy and the air-source heat pump are combined with each other Independently, the heat pump is only used as a supplement when the solar energy is insufficient, and cannot fully utilize the advantages of the combination of solar energy and the heat pump system to improve the utilization efficiency of solar energy and the performance of the heat pump system

Air source heat pumps have defrosting problems when heating hot water in winter, but the current defrosting process of air source heat pump systems is complicated, which affects the water heating performance, safety, reliability and life of air source heat pumps

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