service training tt-011-0808 the compressor. service training 08.2008 vsq/tt 2/14 contents the...
TRANSCRIPT
Service Training
TT-011-0808
The compressor
Service Training08.2008 • VSQ/TT • 2/14
Contents
The refrigerant compressor
Internally controlled compressor
Magnetic coupling
Externally regulated compressor
Overload protection
Service Training08.2008 • VSQ/TT • 3/14
The refrigerant compressor
Swash plate compressor with electromagnetic coupling
Video "Initial operation"
F208_027
Service Training08.2008 • VSQ/TT • 4/14
Drive
With electromagnetic coupling
Internally controlled compressor
F208_047
Service Training08.2008 • VSQ/TT • 5/14
Low pressure
High pressure
Guide railSwash plateRegulating valve
Drive shaft
Chamber pressure
SpringsDrive hub
Upper sidePiston
Lower side
Calibratedrestrictor hole
Overview
Internally controlled compressor
F208_047
Service Training08.2008 • VSQ/TT • 6/14
Low pressure
Bellows 2
Chamber pressure
High pressure
Spring 2
Restrictor hole Chamber pressure
Spring 1
Regulating valve Bellows 1
Swash plate adjustment increases
Internally controlled compressor
F208_048
Service Training08.2008 • VSQ/TT • 7/14
Low pressure
Bellows 2
Chamber pressure
High pressure
Spring 2
Restrictor hole Chamber pressure
Spring 1
Bellows 1Regulating valve
Swash plate adjustment decreases
Internally controlled compressor
F208_049
Service Training08.2008 • VSQ/TT • 8/14
Solenoid coil
Diagram showing coupling switched on
Spring plate with hub
Flow of power
Belt pulley with bearing
Compressor drive shaft
Compressor housing
Diagram showing coupling switched off
Overview
Magnetic coupling
F208_003F208_002
Service Training08.2008 • VSQ/TT • 9/14
Overview
Externally regulated compressor
Belt pulley with rubber moulding – overload protection
Compressor regulator valve N280
Service Training08.2008 • VSQ/TT • 10/14
Suction pressure
High pressure
Swash plateHollow piston
Control valve N280
Drive shaft
Return springCrankcase
High pressure side
Suction side
Crankcase pressure
Compression chamberMaximum delivery of swash plate
Externally regulated compressor
F240_012
Service Training08.2008 • VSQ/TT • 11/14
Zero delivery of swash plate
F240_011
Externally regulated compressor
Service Training08.2008 • VSQ/TT • 12/14
A Crankcase pressureB High pressureC Low pressure
Direction of full load –A to B separated
Direction of no load –A to B opened
C restricts control valve depending on low pressure.
Externally regulated compressor
2 – Mechanical components
1 –Electromagnetic components
Compressor regulator valve N280
Service Training08.2008 • VSQ/TT • 13/14
Rubber moulding
Drive plateBelt pulley
Overview
Overload protection
F263_076
Drive shaft
Belt pulley
Rubber moulding
Service Training08.2008 • VSQ/TT • 14/14
Drive blocked
Overload protection
F263_077
Rubber moulding
Blocked drive plate
Severed material
Severed material
Rubber moulding
Deformation of blockage
Service Training08.2008 • VSQ/TT • 15/14
Thank you