Air conditioner system

Abstract

The invention provides an air conditioner system which comprises a first four-way reversing valve and a second four-way reversing valve. The first four-way reversing valve comprises a D1 port, an E1 port, an S1 port and a C1 port, wherein the D1 port is communicated with an outlet of a compressor, the E1 port is communicated with a first port of a phase change heat accumulator, the S1 port is communicated with an inlet of a gas-liquid separator, and the C1 port is communicated with a first port of an outdoor heat exchanger. The second four-way reversing valve comprises a D2 port, an E2 port, an S2 port and a C2 port, wherein the D2 port is communicated with the outlet of the compressor, the E2 port is communicated with a first port of an indoor unit, and the S2 port is communicated with the inlet of the gas-liquid separator. An outlet of the gas-liquid separator is communicated with an inlet of the compressor. A second port of the phase change heat accumulator is in serial connection with a defrosting electronic expansion valve and is communicated with a second port of the indoor unit, and a second port of the outdoor heat exchanger is connected between the defrosting electronic expansion valve and the second port of the indoor unit. The air conditioner system can improve heating and defrosting effects.

Description

Technical field [0001] The present invention relates to air conditioning equipment technology, in particular to an air conditioning system. Background technique [0002] When the air conditioner is heating, the lowering of the evaporation temperature will cause the outdoor heat exchanger to form frost, and the serious frosting of the outdoor heat exchanger will affect the heating performance of the air conditioner. [0003] The current defrosting system of the air conditioner mainly includes a defrosting system using a hot gas bypass method and a defrosting system using a four-way valve reversing method. The defrosting system using the hot gas bypass method will divert part of the compressor exhaust heat to the outdoor heat exchanger for defrosting during defrosting. During the defrosting process, the working condition of the outdoor heat exchanger as an evaporator remains unchanged, so The defrosting time is long and the defrosting effect is poor; the defrosting system adopting t...

AI Technical Summary

Problems solved by technology

The defrosting system using the hot gas bypass method will divert part of the heat exhausted by the compressor to the outdoor heat exchanger for defrosting during defrosting. During the defrosting process, the working condition of the outdoor heat exchanger as an evaporator remains unchanged, so The defrosting time is long and the defrosting effect is poor; the defrosting system using the four-way valve reversing method needs to change the working mode of the air conditioner during defrosting, that is, from the heating state to the cooling state, and thus cannot continuously supply heat to the room. Therefore, indoor thermal comfort cannot be guaranteed

[0004] Therefore, existing air conditioners have the problems of poor heating effect and defrosting effect

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