Temperature and humidity split control air conditioning system and control method based on different evaporation temperatures of a single machine

Abstract

The present invention provides a temperature-humidity split control air-conditioning system based on different evaporation temperatures of a single machine, including: a cold and heat source system, including compressors with different evaporation temperatures of a single machine, a first four-way valve, a second four-way valve, and an outdoor heat exchanger , sight glass, filter drier, first ball valve, second ball valve, third ball valve, fourth ball valve, first electronic expansion valve, second electronic expansion valve, first indoor heat exchanger and second indoor heat exchanger ; the terminal system, including the temperature control terminal and the humidity control terminal for energy graded utilization; the first water system, including the first water circulation loop formed by the first circulating water pump, the first indoor heat exchanger and the wet treatment section; and the second water The system includes the second water circulation loop formed by the second circulating water pump, the second indoor heat exchanger, the temperature control terminal, and the third water circulation formed by the second circulating water pump, the second indoor heat exchanger, the pretreatment section and the retreatment section loop. The invention also provides a control method of the air conditioning system.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to an air-conditioning system with separate temperature and humidity control based on different evaporation temperatures of a single machine and a control method. Background technique [0002] The Yangtze River Basin has high humidity all year round, especially in summer. Considering the comfort and energy efficiency of the air-conditioning system, it is advisable to adopt the temperature-humidity separate control air-conditioning system in this area. The dual evaporating temperature and humidity separate control air conditioning system is more energy-efficient than the traditional air conditioning system. [0003] In my country, the research on air-conditioning systems and machines with dual evaporating temperatures involves many aspects, but there are few studies on air-conditioning systems with separate control of temperature and humidity at different evaporating temperatures. For ...

AI Technical Summary

Problems solved by technology

For example, patent CN102141316A provides a double evaporating temperature air conditioner with independent control of temperature and humidity. This air conditioner can only cool in summer and is suitable for places with small cooling capacity.

[0004] In addition, the dual evaporating temperature air-conditioning system in the prior art also has problems such as complex system structure, high cost, difficult control, and insufficient energy efficiency.

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