Daikin RXYQ14P7W1B [28/80] Outdoor units

Daikin RXYQ14P7W1B [28/80] Outdoor units
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Outdoor Units
1. VRVIII
VRVIII Technology
p. 28
Reluctance Brushless DC Compressor
9
The reluctance brushless DC motor provides significant increases in efficiency compared to conventional
AC inverter motors, simultaneously using 2 different forms of torque (normal and reluctance torque) to
produce extra power from small electric currents.
9
The motor comprises powerful neodymium magnets, that create the reluctance
torque. These magnets are approximately 12 times stronger than ferrite magnets
and make a major contribution to its energy saving characteristics.
9
High thrust mechanism (VRVIII cooling only/heat pump)
By introducing high pressure oil, the reactive force from the fixed scroll is added
to the internal force, thereby reducing thrust losses. This results in improved
efficiency and suppressed sound level
DC Fan Motor
The use of a DC fan motor offers
substantial improvements in operating
efficiency compared to conventional
AC motors, especially during low speed
rotation.
DC fan motor structure
DC motor efficiency
(comparison with a conventional AC motor)
Motor speed (rpm)
Efficiency (%)
AC motor
200 300 400 500 600 700 800 900 1000
100
80
60
40
20
0
Sine Wave DC Inverter
Optimizing the sine wave curve, results in smoother motor rotation and improved
motor efficiency.
Ferrite
magnet
1
Neodymium magnet
1602UKEPCEN07-200-artwork.indd 281602UKEPCEN07-200-artwork.indd 28 1/8/07 07:15:021/8/07 07:15:02

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