Air conditioning system and its control method

Abstract

The invention provides an air conditioner system which comprises a compressor, a first heat exchanger, a second heat exchanger, a control device and an energy storage device. The air conditioner system has a first operation mode, a second operation mode and a third operation mode through switching of the control device. Under the first operation mode, the amount of refrigerants sucked in from an air suction opening of the compressor is equal to the amount of refrigerants output from a high-pressure storage tank; under the second operation mode, the amount of refrigerants output from the high-pressure storage tank is smaller than the amount of refrigerants sucked in from the air suction opening of the compressor, and part of refrigerants discharged by the compressor is stored in the high-pressure storage tank; and under the third operation mode, the compressor stops operating, and the refrigerants stored in the high-pressure storage tank is used for refrigerating or heating of the air conditioner system. The invention further provides a control method of the air conditioner system. According to the air conditioner system and the control method thereof, an energy storage function of the air conditioner system is achieved, and the electricity consumption is lowered; and moreover, the energy storage device of the air conditioner system has the advantages of being simple in structure and small in stored energy loss.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning system and a control method thereof. Background technique [0002] Generally, the air-conditioning system uses the ice storage tank as an energy storage device, and realizes the peak-shaving and valley-filling of electric energy during the operation of the air-conditioning system by means of ice storage, so as to realize the effective use of electric energy and reduce the cost of electricity consumption. However, the above-mentioned method of using ice storage tanks is mostly used in large-scale central air-conditioning units, and cannot be used in household air conditioners; and the above-mentioned method has high requirements on the thermal insulation performance of the ice storage tank, and the utilization rate of cooling capacity is low, which affects the performance of the air-conditioning system. Contents of the invention [0003] In view of t...

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Problems solved by technology

[0003] In view of the problem that the existing ice storage tanks cannot be applied to household air conditioners, the purpose of the present invention is to provide an air conditioning system and a control method, so that the household air conditioning system can store energy during off-peak power periods, and can store energy during peak power periods. Refrigeration realizes peak-shaving and valley-filling of electric energy

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