FIGURE 3
HS24-141
ROTARY COMPRESĆ
SOR
COMPRESSOR IS MANUFACTURED BY
TECUMSEH PRODUCTS
Page 4
1 - Rotary Compressor (-141 Units Only)
HS24Ć141 units utilize a
hermetically
sealed
rotaryĆtype compressor.
The compressor is
manufactured by TeĆ
cumseh Products. It is ilĆ
lustrated in figure 3.
A rotary compressor utiĆ
lizes four moving parts: a
rotor shaft, eccentric,
roller and a blade. See
figure 4.
The compressor rotor
shaft is attached directly
to the compressor motor.
The rotor shaft is permaĆ
nently attached to an ecĆ
centric. The eccentric roĆ
tates inside the roller. As
the eccentric rotates, the
roller rotates. A springĆ
loaded blade is forced
against the roller providing a separation between intake
and exhaust ports at all times. The blade edge is slightly
rounded and uses a thin layer of refrigerant oil to form a
leak free seal.
ROLLER
FIGURE 4
BLADE
ECCENTRIC
ROTARY COMPRESSOR INTERĆ
NALS
ROTOR
SHAFT
Figure 5 illustrates the four steps in a rotary compressor cycle.
The springĆloaded blade is compressed fully at the beginning
of an exhaust cycle. At this instant the compression is beginĆ
ning (1). The roller rotates and compression continues (2).
When the blade is fully extended the suction port is separated
from the discharge port (3). Intake continues and the comĆ
pressed vapor is discharged (4). A rotary compressor has a
continuous intake cycle.
ROTARY COMPRESSOR OPERATION
COMPLETION
OF INTAKE
1
2
3
4
COMPRESSION
CONTINUES
COMPRESSION
CONTINUES
COMPRESSED
VAPOR
DISCHARGED
BEGINNING OF
COMPRESSION
INTAKE
CONTINUES
FIGURE 5
INTAKE
CONTINUES
INTAKE
CONTINUES
a - Suction Muffler (Ć141 Units Only)
All HS24Ć141 units are equipped with a suction
muffler that is externally mounted on the comĆ
pressor shell and attaches to the suction line.
The muffler contains two wire mesh screen filters
for added compressor protection. See figure 6.
2 - Accumulator (Ć141 Units Only)
All HS24-141 units are equipped with an accumulator that
is mounted in the suction line. The accumulator protects
the compressor from liquid slugging. See figure 6.
FIGURE
6
SUCTION MUFFLER
ACCUMULATOR
HS24Ć141 REFRIGERANT PLUMBING
COMPRESSOR
CONDENSING
COIL
SUCTION
LINE
3 - ReciprocatingĂCompressorĂ(all other units)
All units except for the -141 units utilize a conventional reĆ
ciprocating style compressor.
