| The Trane 3-D™ Scroll Compressor — A
Superior Compressor by Design 
Unmatched Reliability
- 64% fewer parts than a comparable capacity reciprocating compressor. Single
orbiting assembly eliminates valves, rods and pistons.
- Patented 3-dimensional compliance. Orbiting assembly shifts to allow liquid
refrigerant and dirt to pass without damaging the
compressor.
- Smooth operation like a centrifugal compressor, Low torque variation extends
motor life. Minimal vibration reduces wear.
- Solid mount with no internal suspension to wear out.
- Exclusive electronic compressor motor protection. Microprocessor precisely
monitors suction, discharge and motor temperatures and
motor current for more reliable operation.
- Cool suction gas motor cooling for long motor life.
- Integral inlet dirt separator removes contaminants.
System Extreme Environmental Test (SEET)
The Trane SEET program has proven the 3-D scroll compressor to be reliable in
even the most severe operating conditions. The SEET
test simulates five years of actual operation in the most severe application
— the split system heat pump. Cooling tests with
simulated outdoor temperatures of 135 F and heating tests with outdoor temperatures
as low as -20 F are completed. The compressors are run
at minimum and maximum voltages during all tests and cycled on and off rapidly.
During the entire test cycle there is a momentary 1/10
second power interruption every 20 minutes. Despite this and other extreme simulations,
no Trane 3-D scroll compressor has ever failed during
the SEET test.
Maximum Efficiency
- Patented 3-dimensional compliance. Tip seal allows axial contact for maximum
efficiency.
- Single rotating assembly minimizes friction and mechanical losses.
- Rolling element bearings for higher efficiency from reduced friction.
- Suction gas cooled motor for higher motor efficiency.
- No suction or discharge valves for improved efficiency compared to a reciprocating
compressor.
How the Trane 3-D™ Scroll Compressor Works General
A 3-D compressor has two scrolls. The top scroll is fixed and the bottom scroll
orbits. Each scroll has walls in a spiral shape that
intermesh.
Inlet — First Orbit
As the bottom scroll orbits, two refrigerant gas pockets are formed and
enclosed.
Compression — Second Orbit
The refrigerant gas is compressed as the volume is reduced closer to the center of the scroll.
Discharge — Third Orbit
The gas is compressed further and discharged through a small port in the center
of the fixed scroll. |
