In the air-conditioning heat pump system, the four-way valve changes the refrigerant flow direction in winter and summer to switch the refrigeration and heating modes of the system.
Before adjusting thermostatic expansion valve, must confirm that the equipment refrigeration abnormal is caused by the thermostatic expansion valve deviation from the optimal operating point, but not because of less freon, dry filter plug, filter, fan and other reasons caused by.
The throttling mechanism is one of the important parts in the refrigeration device, its function is to reduce the pressure of the saturated liquid (or supercooled liquid) under the condensing pressure in the condenser or the liquid receptacle to the evaporating pressure and the evaporating temperature after throttling, to achieve cooling purposes, adjust the flow of refrigerant into the evaporator to adapt to the evaporator load changes, the common throttling mechanism has the following several.
In the air conditioning refrigeration system, the throttle device is one of the four basic components of the compression refrigeration system, which can reduce the high-pressure liquid from the condenser to the low-pressure liquid, and adjust the refrigerant flow into the evaporator.
