Heat pump air conditioning system and control logic

Abstract

The invention provides a heat pump air conditioning system which can stably and efficiently operate under any working condition. When the environmental temperature is low, small part of hot water prepared by the system is sprayed to the surface of an air-cooled heat exchanger, a frost layer on the surface of the heat exchanger is dissolved and removed, and the heating capacity of the system is improved. When the environmental temperature is quite high, small part of cold water prepared by the system is utilized to conduct auxiliary cooling on the air-cooled heat exchanger, the condensing temperature of the system is reduced, then the operation reliability and the operation efficiency of the system are improved, and the defrosting effect and the heating effect of the air-cooled heat exchanger under various low-temperature working conditions are fully guaranteed. Meanwhile, the cooling effect under the high-temperature working condition can be improved, the annual operation efficiency of the system can be comprehensively improved, and the multiple purposes of improving the heating effect, the operation comfort and other performance of a cold system can be achieved.

Description

technical field [0001] The invention relates to the technical field of heat pump air conditioners, and specifically provides a heat pump air conditioner system and control logic. Background technique [0002] At present, there is basically no heating equipment in the southern part of my country, so the use of heat pump heating has become the first choice for high efficiency and energy saving. In winter rainy weather, the indoor environment needs heating supply. At this time, the outdoor unit is very prone to frost, which greatly reduces the heating capacity of the equipment and easily causes dissatisfaction and complaints from users. Therefore, how to maintain the existing equipment without increasing the complexity? Under the premise of any production cost, improving the heating capacity of low-temperature working conditions has become the research focus of various manufacturers. The existing solutions are mainly: one is to use two-stage compression; the other is frequent def...

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Problems solved by technology

[0002] At present, there is basically no heating equipment in the southern part of my country, so the use of heat pump heating has become the first choice for high efficiency and energy saving. In winter rainy weather, the indoor environment needs heating supply. At this time, the outdoor unit is very prone to frost, which greatly reduces the heating capacity of the equipment and easily causes dissatisfaction and complaints from users. Therefore, how to maintain the existing equipment without increasing the complexity? Under the premise of any production cost, improving the heating capacity of low-temperature working conditions has become the research focus of various manufacturers. The existing solutions are mainly: one is to use two-stage compression; the other is frequent defrosting, in which two-stage compression It will greatly increase the difficulty and cost of the column system, and frequent defrosting is difficult to ensure the comfort of the indoor environment, which reduces the user experience. Therefore, it is necessary to adopt new technical means to efficiently defrost the low-temperature winter rainy weather

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