The parts of a hermetic (sealed) reciprocating compressor is as follows; motor, crankshaft, bearings, valves, and pressure relief valve and piston(s). there are other smaller parts that can be named but these are the main players.
The hermetic scroll compressor is a little different than the reciprocating compressor because it uses an orbiting scroll and a stationary scroll to compress the refrigerant instead of pistons. This is why a scroll compressor cannot run "backwards". The scroll compressor also has an oil pick up tube which differs from a reciprocating compressor.
Now a "semi-hermetic" compressor is build like a small engine. It has an oil pump, reed valve plate, unloaders, pistons, bearings, etc.
A screw compressor is in a class all to itself.
Oil in a AC compressor is there so that the mechanical parts don't over heat from friction
Compressor, condensor, metering device, evaporator.
1.It can enters to the compressor through suction line and can damages the parts of the compressor.2.it can carry out
There are four main parts of refrigerator. A compressor A condenser A Metering Device(capillary tube) An Evaporator
Oil
compressor,hosses/lines,expansion vavle,evaporator coil,condenser coil,fan
at compressor
right before the compressor
orifice
To prevent wear on the compressor.
to lubricate the compressor
Rejects the heat from the compressor and cold coil (evaporator).