Scroll Compressor; Reliable Mechanism For Low Vibration And Low Sound; Compression Principles; Structure - Hitachi FSXN Series Service Manual

11 Electrical checks of the
main parts

11.2 Scroll compressor

11.2.1 Reliable mechanism for low vibration and low sound

1 The direction of rotation is definite.
2 The pressure inside the chamber is high pressure and its surface temperature is between 60 °C and 110 °C.

11.2.2 Compression principles

(1) The gas is inhaled from the inlet port at the outer frame of the fixed scroll.
(2) The gas inside of the compression space is compressed toward
the center of the scroll.
(3) The compression space is minimum at the center of the scroll, and
the gas compressed at the maximum is discharged from the outlet port
of at the center of the scroll.
(4) The above procedures (Suction
repeated continuously.
A Fixed scroll
B Compression space
C Rotating scroll
D Gas
1 Suction process
2 Discharge process
3 Compression process

11.2.3 Structure

The compressor has a structure for supplying oil from the outdoor oil separator.
Inside the oil separator, the pressure is high and the surface temperature of the oil separator is between 60 °C and 110 °C
just like the compressor.
334
SMGB0065 rev. 1 - 12/2010
Compression Discharge) is
D
C
B
A
1
2
3