Air Conditioning System

Abstract

The present invention provides an air-conditioning system, which includes a refrigerant circulation flow path composed of a double-cylinder variable capacity compressor, a four-way reversing valve, an outdoor heat exchanger, a throttling device and an indoor heat exchanger; wherein, the throttling The device includes two parallel refrigerant flow paths, each refrigerant flow path is provided with a throttling part, and at least one refrigerant flow path is provided with a control valve that can open or close the refrigerant flow path, so that when the air conditioning system is in cooling mode, In addition, when the two cylinders of the double-cylinder variable capacity compressor are turned on, both refrigerant flow paths are controlled to open, and when the air conditioning system is in cooling mode and the single cylinder of the double-cylinder variable capacity compressor is turned on, one refrigerant flow path is controlled to open. The air-conditioning system provided by the present invention can effectively increase the flow rate of the refrigerant that flows through the throttling device for decompression per unit time when the air-conditioning system is required to perform high-temperature refrigeration, thereby reducing the pressure of the air-conditioning system during high-temperature refrigeration operation and improving the capacity of the double-cylinder variable capacity compressor. To ensure the high temperature cooling effect of the air conditioning system.

Description

technical field [0001] The invention relates to the technical field of air conditioning, and more specifically relates to a double-cylinder variable capacity air conditioning system with both high-temperature cooling capacity and low-temperature heating capacity. Background technique [0002] At present, the existing air-conditioning systems with double-cylinder variable-capacity compressors on the market are affected by the extreme voltage of high-temperature refrigeration, so that the air-conditioning system cannot achieve dual-cylinder simultaneous operation during cooling. There is also a bottleneck in the displacement design of the two cylinders; and when the two cylinders are turned on at the same time, the system pressure is too high, exceeding the pressure allowed by the system design, and the energy consumption is too high, resulting in poor high-temperature cooling effect of the air conditioning system. Contents of the invention [0003] The present invention aim...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing air-conditioning systems with double-cylinder variable-capacity compressors on the market are affected by the extreme voltage of high-temperature refrigeration, so that the air-conditioning system cannot achieve dual-cylinder simultaneous operation during cooling. There is also a bottleneck in the displacement design of the two cylinders; and when the two cylinders are turned on at the same time, the system pressure is too high, exceeding the pressure allowed by the system design, and the energy consumption is too high, resulting in poor high-temperature cooling effect of the air-conditioning system

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