Heat pump type electromobile air conditioning system with bi-directional flow liquid accumulator

The invention discloses a heat pump type electromobile air conditioning system with a bi-directional flow liquid accumulator. The liquid accumulator comprises a totally-sealed liquid accumulator body; a first liquid connecting pipe and a second liquid connecting pipe extend into the liquid accumulator body from an upper port of the liquid accumulator body, a first port used for connecting is formed in the end, outside the liquid accumulator body, of the first liquid connecting pipe, and a second port used for connecting is formed in the end, outside the liquid accumulator body, of the second liquid connecting pipe; moreover, an air connecting channel for being communicated with an inner cavity of the liquid accumulator body is arranged at an upper port of the liquid accumulator body, and a third port used for connecting is formed in the end, outside the liquid accumulator body, of the air connecting channel. The heat pump type electromobile air conditioning system comprises a compressor, an electromagnetic four-way reversing valve, an indoor heat exchanger, the liquid accumulator and an outdoor heat exchanger; a first port of the electromagnetic four-way reversing valve is connected with an outlet of the compressor, the other three ports of the electromagnetic four-way reversing valve are connected with a first port of the outdoor heat exchanger, an inlet of a gas-liquid separator and a first port of the indoor heat exchanger respectively; thermo-expansion valves and one-way valve assemblies which are connected in parallel are arranged between a second port of the outdoor heat exchanger and a first port of the liquid accumulator and between a second port of the indoor heat exchanger and a second port of a dry filter.