Novel refrigerating unit pipeline structure

The utility model discloses a novel refrigerating unit pipeline structure. Wherein the circulating pipeline is formed by sequentially connecting a compressor, a condenser, a throttle valve, an evaporator and a crankcase pressure regulating valve; a bypass pipe is communicated between an inlet pipe and an outlet pipe of the crankcase pressure regulating valve, an electromagnetic valve is arranged on the bypass pipe, and a pressure sensor located on the front side of the intersection point of the bypass pipe and the outlet pipe is arranged on the outlet pipe. The signal output end of the pressure sensor is connected with the signal input end of the single-chip microcomputer, and the control output end of the single-chip microcomputer is connected with the control input end of the electromagnetic valve. The refrigerating unit is simple in structure and easy to manufacture, the air return pressure of the compressor can be automatically adjusted, damage to the compressor due to the fact that the pressure is too hi