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.
1. Operation Unit: to often observe the compressor oil surface and back oil and oil cleanliness, found dirty or oil surface drop to be resolved in time, so as not to cause poor lubrication.
Operators of the valve operation must be done to identify the object, do not accidentally open other valves and cause artificial accidents.
Since the 1970s, the working reliability of screw compressors has been continuously improved, therefore, it is widely used in refrigeration and air-conditioning engineering in the range of medium refrigerating capacity, and depends on high reliability and efficiency, successfully squeezed into the original piston compressor dominated by the smaller cooling range (750 kw below) . Screw compressor has been so successful, let's analyze its performance.
Solenoid valve is a valve using electromagnetic force. It is an on/off valve that controls the flow of refrigerant in response to power failure. Solenoid valves can be broadly divided into two categories:
Kølesystem almindeligt anvendte ventiler er: kugleventil, gasspjæld, sikkerhedsventil, trykmålerventil, kontraventil, væskeniveauindikator.
