Intelligent control method of refrigerating and heating recovery mode of air conditioning unit

Abstract

The invention provides an intelligent control method of a refrigerating and heating recovery mode of an air conditioning unit. By using the method, the hot water can be made and taken flexibly, and the judgment and control are accurate and have no error; the operation state of the module can be automatically controlled by each module of the air conditioning unit according to the actual condition;the air conditioning unit comprises a control system, a heat exchanger, a throttling device, a compressor, a hot water heat exchanger and a coolant pipeline. The intelligent control method comprises a refrigerating and heating recovery mode, when the air conditioning unit is operated in the refrigerating and heating recovery mode, according to the actual operation condition, the control system automatically enters the operation states of standby, or refrigerating, or refrigerating heating recovery, or heating water through judging the comparison of air conditioning water intake temperature T_C, the refrigerating starting-up temperature T_CK preset by the air conditioning unit and the refrigerating machine halting temperature T_CK, and the temperature interval control unit after judging the comparison of the hot water tank temperature T_R, hot water starting-up temperature T_RK preset by the air conditioning unit and hot water machine halting temperature T_RT.

Description

technical field [0001] The invention belongs to the field of control of air-conditioning and chilling water units, and in particular relates to an intelligent control method for cooling heat recovery mode of an air-conditioning unit. Background technique [0002] Most of the common heat recovery air conditioners in the market are in cooling heat recovery mode, the unit can produce hot water only when there is a cooling load of the air conditioner, but the unit cannot produce hot water when there is no cooling load, so there is a problem for customers When hot water is needed, hot water cannot be obtained in time, and it cannot be automatically selected according to the customer's operating needs, resulting in the unit not being able to fully meet the customer's requirements, causing great trouble to the customer and wasting resources. [0003] For multi-module air-conditioning units, during operation, each unit in the module can only operate in a unified cooling or cooling h...

AI Technical Summary

Problems solved by technology

[0002] Most of the common heat recovery air conditioners in the market are in cooling heat recovery mode, the unit can produce hot water only when there is a cooling load of the air conditioner, but the unit cannot produce hot water when there is no cooling load, so there is a problem for customers When hot water is needed, hot water cannot be obtained in time, and it cannot be automatically selected according to the customer's operating needs, resulting in the unit not being able to fully meet the customer's requirements, causing great trouble to the customer and a waste of resources

[0003] For multi-module air-conditioning units, during operation, each unit in the module can only operate in a unified cooling or cooling heat recovery state, and each module cannot independently control the operating status of the module according to the actual situation, which also causes a waste of resources

[0004] In addition, the air conditioning units in the prior art only use simple temperature control to judge whether the unit is operating in cooling or cooling heat recovery state, there are judgment errors, and it is impossible to accurately control

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