Four capillary connected to the main valve and control valve of the four-way reversing valve principle is introduced

 The main valve and control valve four capillary connection four-way reversing valve, and the three root capillary connection compared the four-way reversing valve, electric motor 12v 500w control valve below three capillary connection in the same way, but on the control valve to increase the capillary connection to the main valve of high-pressure air inlet pipe 4, a high voltage channel. The four-way reversing valve control valve and main valve on the structure and movement theory, namely: the control valve is itself a four-way change valve. 

When the system generator set spare parts is in a state of refrigeration, the electromagnetic coil is not electricity, release valve, valve core due to spring force moved to the left, capillary E and C, B and D, the main valve nozzle within 4 high pressure through capillary B and D into the right space inside the main valve, main valve in the space of the left by capillary C and E to the low pressure ac motor air gate 2, the main valve internal pressure is right wholesalemotor.blogspot.com high left low, piston driven slider move to the left side, nozzle with the 1 in 2 and 4 with 3 connected; When the system is in a state of heating, electromagnetic coil current and the effect of electromagnetic force control valve valve core to move to the right end, capillary E connected with D, B and C, the main valve in the left side become high pressure and right side into a low pressure, the valve core is to the right side, the connecting tube 2 and 3, 4 and 1.