A
PPLICATION
GUIDELINES
The scroll compression
process
S
CROLL
COMPRESSION
PRINCIPLE
The entire scroll compression process is illustrated
below. The centre of the orbiting scroll traces a
circular path around the centre of the fixed 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; continuous
motion of the orbiting scroll serves to seal the
pocket, which decreases in volume as the 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.
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
of reliability and process control were first prior-
ity. The result is a highly efficient product with the
highest reliability obtainable, and a low sound
level.
5
FRCC.PC.016.A1.22
SUCTION
COMPRESSION
DISCHARGE
