Multi-connected outdoor unit and multi-connected with it

Abstract

The invention discloses a multi-connection outdoor unit and a multi-connection unit with the multi-connection unit. The multi-connection outdoor unit has a first stop valve and a second stop valve, including: a compressor; a reversing assembly, which has a first valve port to The fourth valve port; the outdoor heat exchanger, the outdoor heat exchanger includes a collecting pipe, the heat exchange part, a plurality of shunting capillaries and a shunt; the electronic expansion valve, the first end of the electronic expansion valve is connected to the shunt; the refrigerant flow path And the regulating valve assembly, the first end of the refrigerant flow path is connected to the second valve port, the second end of the refrigerant flow path is connected to the second end of the electronic expansion valve, and the regulating valve assembly is connected in series on the refrigerant flow path to adjust the refrigerant flow path. Flow rate: reversing valve assembly, the reversing valve assembly allows the refrigerant to flow out of the multi-connected outdoor unit from the second cut-off valve and allows the refrigerant to flow into the multi-connected outdoor unit from the first cut-off valve. According to the multi-connected outdoor unit of the embodiment of the present invention, the pressure drop generated by the refrigerant passing through the distribution capillary can be reduced, and the performance of the multi-connected outdoor unit can be improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, and more specifically, to a multi-connected outdoor unit and a multi-connected outdoor unit having the same. Background technique [0002] With the development of air-conditioning technology and the strengthening of people's concept of environmental protection, the heat recovery multi-line system is more and more popular in the market. The two-pipe heat recovery system in the related art is one of the mainstream heat recovery multi-line systems currently on the market. It consists of three parts: outdoor unit, refrigerant flow switching device MS and indoor unit. According to the different capacities of indoor units cooling and heating, the system has the following four operating modes: pure cooling: all indoor units are cooled; pure heating: all indoor units are heated; main cooling: indoor units are simultaneously cooled, heated and cooled The start-up capacity is greater tha...

AI Technical Summary

Problems solved by technology

When the system is running in the main cooling mode, the refrigerant coming out of the outdoor heat exchanger is a gas-liquid two-phase, the gas refrigerant is used for the heating of the indoor unit for heating, and the liquid refrigerant is used for the cooling of the cooling indoor unit. The diversion capillary will produce an unacceptable pressure drop, so the actual system uses the diversion method of the pipette instead of the capillary, but the diversion effect of the pipette is far less than that of the capillary, which will lead to poor performance of the heat exchanger

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