Daikin VRVIII Specifications download pdf (Page 7)

These two features work to reduce sound.

Guides are added to the bell mouth intake to

reduce turbulence in the airflow generated by

fan suction. The Aero Spiral Fan features fan

blades with the bent blade edges, further

reducing turbulence.

Smooth Air Inlet Bell Mouth and Aero Spiral Fan

A collection of cutting-edge technologies

results in efficient and quiet operation.

The high efficiency compressor to achieve a higher COP

Note: Data are based on

studies conducted under

controlled conditions at

a Daikin laboratory.

Note: Data are based on studies conducted under

controlled conditions at a Daikin laboratory

using Daikin products.

*1 A neodymium magnet is approximately 10 times

stronger than a standard ferrite magnet.

*2 The torque created by the change in power

between the iron and magnet parts.

DC fan motor

Efficiency improved in all areas compared

to conventional AC motors, especially at

low speeds.

Sine wave DC inverter

>> Smooth sine wave DC inverter

Use of an optimised sine wave smoothes motor rotation, further improving

operating efficiency.

Daikin DC inverter models are equipped with the Reluctance DC

motor for compressor. The Reluctance DC motor uses 2 different

types of torque, neodymium magnet*

and reluctance torque*

. This

motor can reduce energy used because it generates more power with

a smaller electric power than an AC or conventional DC motor.

Compressor equipped with Reluctance DC motor

DC motor efficiency

(comparison with AC motor)

200 300 400 500 600 700 800 900 1000

100

Efficiency (%)

Motor speed (

rpm

)

AC motor

AC motorAC motor

Approx.

40%

increase

Approx.

20%

increase

DC motorDC motorDC motor

Reluctance DC motor

Conventional DC motor

AC motor

Rotational speed (rps)

Motor efficiency (%)

DC fan motor structure

Reluctance

DC motor

Escaping eddies are sucked in by

the bent blade edges, reducing

overall turbulence.

With the bent

blade edge

Without the bent

blade edge

0 30 60 90 120

More than 20%More than 20%

Small load

Low capacity

Large load

High capacity

RXYMQ4PV4A

RXYMQ5PV4A

RXYMQ6PV4A

1 2 3 4 5 6 7 8 9 10 11 12 ... 39 40

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Daikin VRVIII Specifications Page 7

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