Operating Characteristics And Construction; Principle Of The Heat Pump - Electrolux 6 Series Service Manual

3 Operating characteristics and construction

3.1 Principle of the heat pump

Operating principle
1 Capacitor.
2 Steamer.
3 Drum.
4 Condensation collection tray.
5 Condensation collection tank.
6 Compressor.
The cycle of the tumble dryer heat pump consists in evaporating, compressing, condensing and expanding
the refrigerant R 407c.
By pressing the START / PAUSE button the drying cycle begins, the gas in the circuit is conveyed by the
compressor (6) to the capacitor (2), where at the outlet the circulation pipe known as capillary (8) narrows.
This capillary slows down the release of gas and ensures that the pressure inside the capacitor (2) increases
bringing the gas to a liquid status and a pressure level of around 27 bar.
This rise in pressure subsequently increases the temperature of the gas that is now liquid inside the
capacitor (2) reaching around 53 °C.
The air circulated by the fan (7) passes through this capacitor (2) overheating before entering the drum (3)
where the washing is located.
The steamer (1) is located at the capillary outlet (8) with the gas circulation pipe being larger than the
capillary which thus expands the hot, liquid gas coming from the capacitor (2).
This gas expansion means that the gas in its liquid state once again becomes a gaseous state causing the
gas itself to cool and subsequently cooling the entire steamer, bringing it to a temperature of around 20 °C.
Technical Support - A.D.L.
Operating principle with auxiliary capacitor
7 Air circulation fan.
8 Capillary.
9 NTC.
10 Compressor cooling fan.
11 Condensation water suction pump.
12 Auxiliary capacitor.
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