User`s manual

8
Optimum Refrigerant System Control
• Smooth operation from low speed to high speed
• Smooth Sine Voltage Wave form are attained
• Energy efficiency is further improved in low speed range
New Inverter Control (Vector control)
• Optimum heat exchanger refrigerant distribution
• Advanced refrigerant liquid return protection control system
• High speed system control by new Superlink system
• Use of larger diameter for suction piping and discharge piping
and redesigned of double tube
Employment of DC fan motor has enabled to realize an excellent
efficiency of approximate 60% higher than previous models.
DC Fan Motor
Rotor(Squirrel Cage made of conductor)
Rotor(made of permanent magnet)
Stator (coil)
Stator (coil)
New Inverter Control has applied new advanced technology of Vector
control and has realized high efficiency.
We have improved refrigeration circuit from our long experience
and have realized following Optimum Refrigerant System Control.
Compact Integrated PCB
• Control Box size reduction
• PCB size reduced by 50 %
Control PCB: Single-sided board Double-sided board
Inverter PCB: Power transistor size reduction
• New Superlink system control
• New Design method applied
Control PCB
KX4 KX6
Fan blade design adapted from MHI's aerospace division - with
serrated edges that deliver increased air volume with less
power input.
Long-chorded 3 propeller fan with serration
Serration
High EfficiencyHigh Efficiency High EnduranceHigh Endurance
DownsizingDownsizing
Orbital scroll
Fixed scroll
Lower at the
inside
Same height
Higher at the
outside
3D scroll compressor has the different height scroll at the
outside and the inside.
A high compression ratio is improved by compressing the
refrigerant both radially and axially.
3-Dimension Compression has been realized with a much
higher efficiency even if compression ratio is high.
The strength of the scroll is improved
by reducing the height of the inner
wrap, which receives a heavy load.
High strength due to
the lower teeth inside
3D Scroll Compressor
Unit start up speed in heating mode drastically improved for lower outdoor temperature operation.
3D compressors are applied for FDC335KXE6(12HP), FDC560KXE6-K(20HP), FDC615KXE6(22HP) & FDC680KXE6(24HP).