Load control method and device of multi-compressor unit and air conditioner

A load control and multi-compressor technology, which is applied in the direction of control input related to air characteristics, heating and ventilation control system, space heating and ventilation control input, etc., can solve the problems of environmental impact and poor user experience, and reduce High temperature alarm, avoid shutdown without refrigeration, and improve user experience
CN109812949AActive Publication Date: 2019-05-28GUANGDONG EUROKLIMAT AIR CONDITIONING & REFRIGERATION
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGDONG EUROKLIMAT AIR CONDITIONING & REFRIGERATION
Publication Date
2019-05-28

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Abstract

The invention discloses a load control method and device of a multi-compressor unit and an air conditioner. The load control method comprises the steps that the water outlet temperature of cooling water of a condenser and air returning temperature of an indoor unit are obtained in real time; if the water outlet temperature is within the starting-up range, and the air returning temperature is larger than the set target temperature, a first compressor is started; according to the difference value of the real-time water outlet temperature, the air returning temperature and the target temperature,the number of loading or deloading compressors can be determined; the water outlet temperature of the cooling water and the air returning temperature of the indoor unit are obtained, in combination with the set refrigeration target temperature, through analysis of the refrigeration need and the allowable load of the cooling water, the number of loading compressors is decided, or the number of thecorrespondingly deloading compressors is decided; under the condition that the cooling water temperature is high, within the cooling water capacity range, a certain number of compressors are allowedto work, the cooling water high temperature alarm can be reduced, the condition that all compressors are shut down and do not carry out refrigeration is avoided, and the user experience is improved.
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Description

technical field

[0001] The invention relates to the field of air conditioning, in particular to a load control method and device for a multi-compressor unit and an air conditioner. Background technique

[0002] The condenser of multi-compressor systems such as central air conditioners usually has an auxiliary water cooling system. The traditional cooling water temperature control is equipped with an inlet water temperature sensor and an outlet water temperature sensor to specify the operating range of the inlet and outlet water temperature of the unit. If the operating range is exceeded, the unit will stop. . For multi-compressor system units, although the original cooling water system cannot meet the full load operation of the unit, it can meet the partial load operation. According to the traditional water temperature control, if the water temperature exceeds the operating range during the operation of the unit, all compressors of the unit will stop, and the unit will comp...

Claims

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