Air conditioner defrosting system and air conditioning system

Abstract

The invention discloses an air conditioner defrosting system and an air conditioning system. The air conditioner defrosting system and the air conditioning system are characterized in that one end ofa first outdoor heat exchanger is connected with a valve port a of a first three-way valve, the other end of the first outdoor heat exchanger is connected with a valve port a of a third three-way valve, a valve port b of the first three-way valve is communicated with a compressor, a c valve port of the first three-way valve is communicated with a c valve port of a four-way reversing valve, a valveport b of the third three-way valve is communicated with a defrosting liquid outlet port of a liquid storage unit, a c valve port of the third three-way valve is communicated with an outdoor electronic expansion valve, one end of a second outdoor heat exchanger is connected with a valve a of a second three-way valve, the other end of the second outdoor heat exchanger is connected with a valve a of a fourth three-way valve, a valve port b of the second three-way valve is communicated with the compressor, a c valve port of the second three-way valve is communicated with a c valve port of the four-way reversing valve, and a valve port b of the fourth three-way valve is communicated with the defrosting liquid outlet port of the liquid storage unit, a c valve port of the fourth three-way valveis communicated with an outdoor electronic expansion valve, the liquid storage unit comprises a first port, a second port and the defrosting liquid outlet port, the first port is communicated with the c valve port of the second three-way valve and the c valve port of the fourth three-way valve through an outdoor electronic expansion valve.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting system and an air conditioner system. Background technique [0002] When the air conditioner is running for heating in winter, frost will form on the outdoor heat exchanger, which will affect the heat exchange effect. At present, the four-way valve reversing defrosting method is used. This defrosting method has the disadvantages of generating noise and reducing the indoor heating effect. [0003] Patent CN201520063734.4 invents an air conditioner capable of continuous heating and defrosting. The outdoor heat exchanger of the air conditioner includes two sets of outdoor heat exchanger units. The outdoor heat exchanger units are connected in series with electronic expansion valves. In heating mode, The high-pressure liquid refrigerant flowing out of the indoor heat exchanger and the high-pressure defrosting liquid refrigerant flow...

AI Technical Summary

Problems solved by technology

[0002] When the air conditioner is heating in winter, the outdoor heat exchanger is frosted, which affects the heat exchange effect

At present, the four-way valve reversing defrosting method is adopted. This defrosting method has the disadvantages of generating noise and reducing the indoor heating effect.

[0003] Patent CN201520063734.4 invents an air conditioner capable of continuous heating and defrosting. The outdoor heat exchanger of the air conditioner includes two sets of outdoor heat exchanger units. The outdoor heat exchanger units are connected in series with electronic expansion valves. In heating mode, The high-pressure liquid refrigerant flowing out of the indoor heat exchanger and the high-pressure defrosting liquid refrigerant flowing out of one group of outdoor heat exchangers enter another group of outdoor heat exchangers together. In the normal configuration of indoor and outdoor heat exchangers and electronic expansion valves In this situation, the liquid refrigerant in the indoor heat exchanger and one group of outdoor defrosting heat exchanger units cannot be removed in time, and the excess liquid refrigerant enters another group of outdoor heat exchanger units, which has the following disadvantages: 1. Indoor heat exchanger Liquid accumulation, poor heat transfer effect, high condensation pressure; 2. The defrosting liquid in the defrosting outdoor heat exchanger unit cannot be discharged in time, and the defrosting effect is poor; 3. The liquid supplied by the non-defrosting outdoor heat exchanger Refrigerant excess, resulting in lower return air temperature and compressor liquid return

[0004] Based on the above technical problems, there is no relevant solution; therefore, it is urgent to find an effective solution to solve the above problems

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