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Compressor

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An air compressor compresses the gaseous refrigerant so that it (not too much water in proportion!) becomes liquid in the condenser later. In this form it then leaves the condenser where it transfers its heat. The refrigerant is sucked from the evaporator where it has received the heat of the air flowing into the interior space. The air conditioning compressor operates on the principle of axial piston pump. Evenly distributed over the circumference of the top five cylinders are arranged. Their pistons are moved from a rotating swash plate to the pulley. In the cylinder head for each cylinder flutter valves are arranged that open the way for suction or pressure side, depending on the piston movement. At some air compressors the inclination of the swash plate and the pressure or the flow rate is adjustable. Piston pumps are well suited to build up high pressures, but have the disadvantage of a non-uniform flow. This disadvantage can be compensated by the axial piston pump where several elements in a compact design are sent out. Compared with ordinary coolant pumps Piston pumps have the additional disadvantage that their cylinder walls must be lubricated. Therefore, a certain percentage of oil must be added to the refrigerant.