A dual temperature heat source heat pump system

Abstract

The invention discloses a heat pump system with dual-temperature heat sources. The heat pump system with the dual-temperature heat sources comprises a compressor, a gas-liquid separator, a four-way valve, a water source heat exchanger, an exhausting heat exchanger and a dual-temperature heat exchanger; and the dual-temperature heat exchanger comprises a first air treatment heat exchanger and a second air treatment heat exchanger. A heat pump evaporator or a condenser is provided with two heat exchangers; the two heat exchangers can serve as the evaporator or the condenser during running in a refrigerating or heating mode, and run at different temperatures, so that heat transfer temperature difference between heat pump working media and environment media is reduced during running, pressure difference between a high-temperature heat source and a low-temperature heat source of a heat pump is reduced, temperature and humidity can be independently controlled, heat and humidity load is independently treated, total exhausting heat is recycled, and the efficiency on refrigeration, heating, ventilating, object heating, object cooling and object drying of a heat pump air conditioner is improved.

Description

technical field [0001] The invention relates to a heat pump system, in particular to a dual-temperature heat source heat pump system that can be used for building heating, air conditioning, ventilation, heating, cooling, drying and dehumidification of objects, and the like. Background technique [0002] A heat pump is a heat engine that works in a reverse cycle. It only needs to input a small amount of high-grade energy to absorb heat from a low-temperature environment and release several times the heat to a high-temperature environment. It has cooling and heating functions and has been widely used in house heating and air conditioning. etc., is an efficient heating device. Most of the current heat pumps work on a single-temperature cold and heat source, which makes the heat pump used for heating, air conditioning, object heating, cooling, drying and dehumidification, etc., the heat transfer temperature difference between the heat pump working fluid and the environmental med...

AI Technical Summary

Problems solved by technology

However, the second-stage heat pump unit in this invention uses a series evaporator / condenser, which is not conducive to the uniform distribution of refrigerant, and the air treatment process is still a conventional cooling and dehumidification coupling process, and the efficiency is still not high.

[0004] Another example: Invention patent ZL200510029140.2 proposes a heat pump air-conditioning system with solution absorption and drying function, which can achieve high-efficiency dehumidification, but the solution dehumidification equipment is large in size, the system process is long and complicated, and the solution is corrosive, which requires high equipment requirements, etc. The disadvantages affect the actual effect of its engineering application

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