(2M303)
(Current)
| Product |
Magnetron |
| Type Name |
2M303 |
| Output power |
1090W |
| Efficiency |
75.00% |
| Anode voltage |
4.4kV |
| Anode current |
330mA |
| Filament Voltage |
3.15V |
| Dimension |
W95 × D80 × H101mm
(excluding antenna) |
New Super High Efficiency Magnetron 2M303
We have developed the new magnetron 2M303 for a microwave oven which realized
75 % of efficiency highest in the industry and start mass production in
May.
Efficiency of a magnetron is around 71 % and has not been improved so much for recent 20 years.
In order to increase efficiency, the magnetic flux density supplied inside
an anode of a magnetron should be increased.
However it requires larger or stronger magnets which increase the cost of magnets very much.
And heavy cost for a magnetron may not be acceptable as a magnetron is the parts for home appliances.
We realized increase in the magnetic flux density introducing new optimized design into the magnetic circuit.
We could achieve large increase in efficiency with the new magnetic circuit
and the optimized dimension for the anode and the cathode.
In Japan a microwave oven is specified as energy-saving product from 2008,
and improvement in efficiency
is urgently necessary. And 4 to 5 hundred million microwave ovens are in use all over the world.
As total energy consumption for all microwave ovens would be huge, improvement
of a magnetron in efficiency can contribute to large energy saving.
According to efficiency increase of a magnetron from 71% to 75%, 6% of
increase in output power of a microwave oven or 6% of decrease in input
power (power consumption) in case of keeping the same output power can
be expected.
For instance, in case of a microwave oven of 1.4kW input power, decrease of 84W can be expected.
And energy saving of 8.4kWh in case of 100 hours use a year can be expected.
We have developed high efficiency magnetron 2M303 corresponding to demand
of efficiency increase for microwave ovens in Japanese market.
We will promote 2M303 not only for Japanese market but also for overseas market.
Outline
New magnetic circuit
We design the magnetic circuit to maximize magnetic flux density considering
influence on haracteristics such as mode stability. (Patents are applied)
(Computer analysis of magnetic flux)
Note : Magnetic flux density becomes stronger from blue, green to red.
Magnetic flux density of 2M303 in the center area is stronger than that of current magnetron.
(Cross section of anode)
