Three-pipe heating and reclaiming air-conditioning system

Abstract

The invention discloses a three-pipe heating and reclaiming air-conditioning system, which comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a manifold and an electronic expansion valve. The three-pipe heating and reclaiming air-conditioning system is also provided with a first three-way valve, a second three-way valve and a plate heat exchanger; the compressor is a jetenthalpy increasing compressor, and is provided with a high-pressure exhaust port, a low-pressure return port and a medium-pressure return port; the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger; the manifold comprises a first manifold, a second manifold and a third manifold; the indoor heat exchanger comprises a first indoor heat exchanger and asecond indoor heat exchanger; a first port of the first three-way valve and a first port of the second three-way valve are connected in parallel and are communicated with the high-pressure exhaust port of the compressor, and a second port of the first three-way valve is communicated with one end of the outdoor heat exchanger. The three-pipe heating and reclaiming air-conditioning system has the characteristics of increment of refrigerating / heating quantity of the system, improvement of operation reliability, environmental protection and energy conservation, high energy efficiency ratio and wide application range.

Description

technical field [0001] The invention relates to a three-pipe heat recovery air conditioning system. Background technique [0002] The traditional three-pipe heat recovery air conditioning system is a heat recovery air conditioner that can achieve simultaneous cooling and heating functions, but like ordinary air source heat pump units, in low temperature environments, taking Beijing as an example, the lowest temperature in winter can reach - 15°C, the heating capacity and reliability are greatly reduced, and it is difficult to meet the heating demand in cold regions in winter. In order to make the three-pipe heat recovery air-conditioning system more widely used in the market, like ordinary air source heat pump units, a new generation of products needs to be developed to meet the heating needs in cold regions in winter. Contents of the invention [0003] The object of the present invention is to provide a three-pipe heat recovery air-conditioning system that increases the ...

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Problems solved by technology

[0002] The traditional three-pipe heat recovery air conditioning system is a heat recovery air conditioner that can achieve simultaneous cooling and heating functions, but like ordinary air source heat pump units, in low temperature environments, taking Beijing as an example, the lowest temperature in winter can reach - 15°C, the heating capacity and reliability are greatly reduced, and it is difficult to meet the heating demand in cold regions in winter

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