Hitachi RAS-(2-6)HVNP1(E), Service Manual

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11 Electrical checks of
main parts
469
SMGB0087 rev.0 - 12/2013
11
11.8 Scroll compressor
11.8.1 Reliable mechanism for low vibrating and low sound
1 The rotating direction is definite.
2 The pressure inside of the chamber is high pressure and the surface temperature of the chamber is 60 ºC to 110 ºC.
11.8.2 Principle of compression
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 compression discharge) is re-
peated continuously.
1. Gas.
2. Rotating scroll.
3. Compression space.
4. Fixed scroll
A. Suction procedure.
B. Discharge process.
C. Compression process.
1
A
B
C
2
3
4