Multi-split system containing double enhanced vapor injection compressors

Abstract

The invention relates to a multi-split system containing double enhanced vapor injection compressors. The multi-split system containing double enhanced vapor injection compressors comprises two enhanced vapor injection compressors, wherein exhaust ports of the two compressors are connected in parallel after passing through an oil separator respectively and are then connected to a D port of a four-way valve; a C port of the four-way valve is connected to an E port of the four-way valve after sequentially passing through a outdoor heat exchanger, a control system and an indoor heat exchanger; aS port of the four-way valve is connected to suction ports of the two compressors after passing through a gas-liquid separator respectively; the control system comprises a plate heat exchanger I and aplate heat exchanger II; the main side inlets of the two plate heat exchangers are connected in parallel with each other and then connected to the outdoor heat exchanger after passing through an electronic expansion valve III; and the main side outlets of the two plate heat exchangers are connected to each other in parallel and then connected to the indoor heat exchanger. The multi-split system containing double enhanced vapor injection compressors has reasonable design and high reliability, by adopting a double-plate heat exchanger structure, the heat exchange quantity is improved, the control precision and the air injection effect of the compressors are improved, and the overall performance of the system is improved.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to a multi-connection system with dual compressors, specifically a multi-connection system with dual air-jet enthalpy-increasing compressors. Background technique [0002] At present, more and more air-conditioning manufacturers are familiar with, accept and apply air-injection enthalpy-enhancing compressors. However, for systems using double-jet enthalpy-enhancing compressors, most of them still use a single plate heat exchanger and a single electronic expansion valve for control, which has problems such as low control accuracy, poor operating efficiency, and easy interference, which greatly reduces the overall system efficiency. reliability. Therefore, it needs to be improved. Contents of the invention [0003] The purpose of the present invention is to address the deficiencies of the prior art, to provide a multi-line system with dual air-injection enthalpy-increasing compressors...

AI Technical Summary

Problems solved by technology

However, for systems using double-jet enthalpy-enhancing compressors, most of them still use a single plate heat exchanger and a single electronic expansion valve for control, which has problems such as low control accuracy, poor operating efficiency, and easy interference, which greatly reduces the overall system efficiency. reliability

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