refrigeration air conditioning system

The invention provides a refrigeration air conditioning system, relates to the field of air conditioners, and is used for reducing the occupied volume of the air conditioning system, relieving the weight of the air conditioning system, reducing the cost of a shelter vehicle and accelerating the development of the shelter vehicle. The refrigeration air conditioning system comprises an alternating-current compressor, a direct-current compressor, an exhaust three-way device, a condenser, a throttling element, an evaporator and an air return three-way device; an outlet end of the alternating-current compressor is connected with a first inlet end of the exhaust three-way device; an outlet end of the direct-current compressor is connected with a second inlet end of the exhaust three-way device; an outlet of the exhaust three-way device is connected with an inlet end of the condenser; an outlet end of the condenser is connected with an inlet end of the throttling element; an outlet end of the throttling element is connected with an inlet end of the evaporator; an outlet end of the evaporator is connected with an inlet end of the air return three-way device; a first outlet end of the air return three-way device is connected with an inlet end of the alternating-current compressor; and a second outlet end of the air return three-way device is connected with an inlet end of the direct-current compressor.