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TOSHIBA INVERTER AIR CONDITIONERS
toshiba dc inverter

Toshiba: the inverter company

The efficiency of inverter air conditioning is determined by the efficiency of each component: the control electronics, the motor, and the compressor. Toshiba has focused its attention on all of these components.

toshiba inverter diagram


The driver of technology

The motor that drives
the revolutions of the air
conditioner
is a concentration
of mechanical technology and
electromagnetic engineering.
The most advanced methods
of modelling were used
to determine the best
configuration of the permanent
magnets in the DC motor.
A perfect choice of the
shape and materials for the
permanent magnets allows
for the best synchronisation
with the frequency of the
voltage applied by the control
circuit. The rpm is therefore
precisely selected to match
the ambient conditions.

Control electronics

Power Factor

The power factor of an electrical load, such as a motor,

is its power output compared to the energy it consumes, both measured in watts. Ideally, the electrical current
and voltage are “in phase”, and the power factor is 100%.
Actual operating conditions cause an inverter system to deviate from this ideal. Toshiba has combined two
technologies, creating the “DC Hybrid Inverter”, that automatically chooses the better of the two control methods based on the actual conditions at the time.
This solution provides high capacity when it is necessary.
On very cold winter days, or hot summer days the Toshiba
DC Inverter uses the PAM (Pulse Amplitude Modulation)
method, and for very low energy consumption, when conditions are less severe uses the PWM (Pulse
Width Modulation) method. Given that maximum capacity is not often required, and that high efficiency is always desirable, the result is a greatly reduced annual energy consumption.

 

The twin rotary compressor

The compressor is the third
extra-thermodynamic element
which Toshiba has continuously
improved, finally arriving at the
solution called the “DC Twin
Rotary Compressor”. It is a
double cam rotary compressor
which has several features that
increase its performance and
reliability. The opposed, double
blade design yields mechanical
stability and less vibration that
could cause stress on other
components. In fact, being
able to reduce the rpm without
causing instability enables
improved temperature control
when less capacity is required.
An added benefit offered by the
DC Twin Rotary Compressor is
its low noise level compared to
normal rotary compressors, and
with refrigerant R410A, it is more efficient than scroll compressors.

The mission?

Improved Indoor Air Quality

Comfort in the home means much more than just controlling the temperature. Because of this, Toshiba is an excellent investment for the enhanced well-being of the family environment. One of Toshiba’s research objectives is the continuous introduction of new
ways to eliminate air pollutants in the residential air conditioning sector.

 

DC Hybrid Inverter Technology

It’s true: Toshiba was the first air conditioning manufacturer to utilise inverter technology within air conditioning systems in 1981. Being first to develop and utilise innovative technology is a passion for Toshiba.
Inverter technology immediately demonstrated its advantages: precisely matching the cooling or heating requirement, energy efficiency, and accurate temperature control.

The development of the DC Hybrid Inverter has again confirmed this innovative capability and leadership
position in technology in a fast and growing air conditioning market.

toshiba inverter unit

The twin rotary compressor

The compressor is the third
extra-thermodynamic element
which Toshiba has continuously
improved, finally arriving at the
solution called the “DC Twin
Rotary Compressor”. It is a
double cam rotary compressor
which has several features that
increase its performance and
reliability. The opposed, double
blade design yields mechanical
stability and less vibration that
could cause stress on other
components. In fact, being
able to reduce the rpm without
causing instability enables
improved temperature control
when less capacity is required.
An added benefit offered by the
DC Twin Rotary Compressor is
its low noise level compared to
normal rotary compressors, and
with refrigerant R410A, it is more efficient than scroll compressors.

 
 
 
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