4-Way Reversing Valve is a very important part of the air conditioning, refers to a control valve, 4-Way Reversing Valve to change the direction of Freon flow in air-conditioning, the ultimate purpose is to let air conditioning can be refrigeration can also make heat, so that air conditioning refrigeration heating function of the four-way valve this part,

Today’s small series to introduce you to the 4-Way Reversing Valve refrigeration heating principle and 4-Way Reversing Valve fault how to repair.

Central air-conditioning quad-pass valve-principle

Refrigeration: When the heat pump type air conditioner is running in the refrigeration condition, the 4-Way Reversing Valve makes the solid line connected in the diagram. At this point, the indoor heat exchanger becomes the evaporator, and the outdoor heat exchanger becomes condenser. From the indoor heat exchanger to low-temperature low-pressure through the 4-Way Reversing Valve and muffler into the gas-liquid separator. After separating out the liquid, the dry hot air is compressed into a high temperature and high pressure gas irresolute out by the compressor, and the gas goes through the four-way valve into the outdoor heat exchanger and condenses to become supercooled liquid.

supercooled liquid after capillary resistance to become low-temperature low-pressure two-phase fluid, into the indoor heat exchanger evaporation endothermic (at this time the indoor air is cooled), once again through the four-way valve and gas-liquid separator into the next cycle: The filter is mainly used for the separation of refrigerant and compressor oil to ensure heat exchanger efficiency. Heating: When the heat pump type air conditioner is running in the heating working condition, the 4-Way Reversing Valve makes the dashed line in the diagram. At this time, the indoor heat exchanger becomes the condenser, the outdoor heat exchanger becomes evaporator. From the outdoor heat exchanger to low-temperature low-pressure through the 4-Way Reversing Valve and muffler into the gas-liquid separator, after separating the liquid, dry hot air is compressed into the compressor into a high temperature and high pressure gas irresolute out, gas through the four-way valve into the indoor heat exchanger exothermic condensation (at this time, indoor air is heated). Become the supercooled liquid, the supercooled liquid is reduced by capillary drag to become low-temperature low-pressure two-phase fluid. Into the outdoor heat exchanger evaporation endothermic, then through the hot gas through the 4-Way Reversing Valve and gas-liquid separator into the next cycle.

4-Way Reversing Valve4-Way Reversing Valve used in unitary split and window-type heat pump system
4-Way Reversing Valve is a very important part of the air conditioning, refers to a control valve, 4-Way Reversing Valve to change the direction of Freon flow in air-conditioning, the ultimate purpose is to let air conditioning can be refrigeration can also make heat, so that air conditioning refrigeration...