Croll Compression Principle; The Scroll Compression Process - Danfoss MLM Series Application Manuallines

A G
PPLICATION UIDELINES
The scroll compression
process
SUCTION
COMPRESSION
DISCHARGE
S

CROLL COMPRESSION PRINCIPLE

The entire scroll compression process is illustrat-
ed below. The centre of the orbiting scroll traces a
circular path around the centre of the fi xed scroll.
This movement creates compression pockets be-
tween the two scroll elements.
Low pressure suction gas is trapped within each
crescent-shaped pocket as it forms; continu-
ous motion of the orbiting scroll serves to seal
the pocket, which decreases in volume as the
Danfoss scroll compressors are manufactured us-
ing the most advanced machining, assembly, and
process control techniques. In design of both the
compressor and the factory, very high standards
FRCC.PC.015.A4.02
pocket moves towards the centre of the scroll
set, with corresponding increase in gas pressure.
Maximum compression is achieved, as the pocket
reaches the discharge port at the centre.
Scroll compression is a continuous process: when
one pocket of gas is being compressed during the
second orbit, another gas quantity enters a new
pocket formed at the periphery, and simultane-
ously, another is being discharged.
of reliability and process control were fi rst prior-
ity. The result is a highly effi cient product with the
highest reliability obtainable, and a low sound
level.
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