Trane RT-DS-10 - Manual (Page 4)

4
One of two matched scroll plates – the
distinguishing feature of the scroll
compressor.
Chart illustrates low torque variation of
3-D Scroll compressors reciprocating
compressor.
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Trane 3-D ® Scroll Compressor
Simple Design with 70% Fewer Parts
Fewer parts than an equal capacity
reciprocating compressor means
significant reliability and efficiency
benefits. The single orbiting scroll
eliminates the need for pistons,
connecting rods, wrist pins and valves.
Fewer parts lead to increased reliability.
Fewer moving parts, less rotating mass
and less internal friction means greater
efficiency than reciprocating
compressors.
Patented 3-D Scroll Compliance
Trane 3-D Scroll compliance provides
important reliability and efficiency
benefits. 3-D compliance allows the
orbiting scrolls to touch in all three
dimensions, forming a completely
enclosed compression chamber which
leads to increased efficiency. In
addition, 3-D compliance means the
orbiting scrolls only touch with enough
force to create a seal so there is no
wear between the scroll plates. The
fixed and orbiting scrolls are made of
high strength cast iron which results in
less thermal distortion, less leakage,
and higher efficiencies. The most
outstanding feature of the scroll
compressor 3-D compliance is that the
slugging will not cause failure. In a
reciprocating compressor, however, the
liquid or dirt can cause serious
damage.
Low Torque Variation
The 3-D Scroll compressor has a very
smooth compression cycle with torque
variations that are only 30 percent of
that produced by a reciprocating
compressor. This means the scroll
compressor imposes very little stress
on the motor for greater reliability. Low
torque variation means reduced noise
and vibration.
Suction Gas Cooled Motor
Compressor motor efficiency and
reliability is further optimized with this
design. Cool suction gas keeps the
motor cooler for longer life and better
efficiency.
Proven Design Through Testing and
Research
With over twenty years of development
and testing, Trane 3-D Scroll
compressors have undergone more
than 400,000 hours of laboratory
testing and field operation. This work
combined with over 25 patents makes
Trane the worldwide leader in air
conditioning scroll compressor
technology.
Features
and
Benefits