Energy-saving process and manufacturing system of heat pump

The invention discloses an energy-saving process and manufacturing system of a heat pump, which comprises a second evaporator, a first pipeline, a seventh pipeline, a third electronic expansion valve, a first shunt pipe and a second shunt pipe, and a shunt device is connected between the first pipeline and the second pipeline on the left and right sides of the second evaporator; according to the flow dividing device, the left end and the right end of a third electronic expansion valve are connected with a first flow dividing pipe and a second flow dividing pipe correspondingly. A first shunting pipe of the shunting device is communicated with a first pipeline on the left side of the second evaporator, and then a second shunting pipe of the shunting device is communicated with a second pipeline on the right side of the second evaporator. In this way, when high-pressure refrigerant liquid enters the second evaporator through the first pipeline, a small part of the high-pressure refrigerant liquid enters the thi