What does the multi cylinder multi-stage switching compressor dual source heat pump system include?

The company develops multi cylinder multi-stage switching compressor dual source heat pump system, including compressor, low-pressure air inlet pipeline, low-pressure air outlet pipeline, variable pressure air inlet pipeline, variable pressure air outlet pipeline, high-pressure air inlet pipeline and high-pressure air outlet pipeline; The compressor comprises a low-pressure stage cylinder, a variable pressure cylinder and a high-pressure stage cylinder; A first control valve is communicated between the variable pressure air inlet pipeline and the low pressure air inlet pipeline; The low-pressure air outlet pipeline is connected with the high-pressure air inlet pipeline; The variable pressure air outlet pipeline is connected with the high-pressure air inlet pipeline; A second control valve is connected on the pressure transformation gas outlet pipeline; The variable pressure air outlet pipeline and the high-pressure air outlet pipeline are connected through a third control valve. The multi cylinder multi-stage switching compressor dual source heat pump system provided by the application realizes that only one compressor can carry out different combination switching modes, achieve the best performance under different working conditions, and improve the energy efficiency of the compressor. It also provides an operation method and air conditioner of the multi cylinder multi-stage switching compressor dual source heat pump system.