CN204350345U - Microwave oven - Google Patents
Microwave oven Download PDFInfo
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- CN204350345U CN204350345U CN201520081771.8U CN201520081771U CN204350345U CN 204350345 U CN204350345 U CN 204350345U CN 201520081771 U CN201520081771 U CN 201520081771U CN 204350345 U CN204350345 U CN 204350345U
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- magnetron
- heating circuit
- wave
- filament winding
- microwave oven
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Abstract
The utility model relates to a kind of microwave oven.It comprises magnetron and high-tension transformer, and high-tension transformer comprises again skeleton, Filament Winding and secondary winding, and Filament Winding and magnetron cathode connect to form heating circuit, series diode in described heating circuit.The utility model is reasonable in design, by strengthening the methods such as the output voltage of Filament Winding or overstriking Filament Winding wire diameter, strengthen the loop current of heating circuit, because magnetron is in a sinusoidal cycles, half-wave is had to be that secondary winding is to capacitor charging, half-wave is had to be that overlap capacitance electric discharge produces microwave, and the sine wave thermal voltage of heating circuit input, the words heated respectively in each half-wave, the efficiency of magnetron has close to 5% difference, by series diode in heating circuit, make the power work of heating circuit in useful half-wave, so namely, the efficiency of magnetron can be made to improve, there is the negative electrode temperature rise that can ensure magnetron can not be too high.
Description
Technical field
The utility model relates to a kind of microwave oven.
Background technology
Existing microwave equipment is as microwave oven etc., generally comprise high-tension transformer, high-voltage capacitance, high-voltage diode and magnetron, high-tension transformer comprises again armature winding, secondary winding, Filament Winding and transformer framework four part, the voltage of secondary output about the 2000VAC of high-tension transformer, the negative electrode composition heating circuit of Filament Winding and magnetron, secondary winding, high-voltage capacitance and high-voltage diode composition half-wave voltage-multiplying circuit drives magnetron work; Filament Winding input sine wave voltage heats to the magnetron cathode in heating circuit, when microwave oven starts, the negative electrode of magnetron needs to be heated to enough temperature, and the height of cathode temperature can affect magnetron and start required time, starts the rear efficiency of microwave oven and the life-span of magnetron.
Summary of the invention
Therefore, the purpose of this utility model is to provide a kind of new magnetron cathode heating circuit, and this microwave oven can ensure that magnetron normally starts and can improve the efficiency of whole microwave oven.
Above-mentioned purpose adopts following technical proposals to realize.
A kind of microwave oven, comprise magnetron and high-tension transformer, high-tension transformer comprises again skeleton, Filament Winding and secondary winding, and Filament Winding and magnetron cathode connect to form heating circuit, series diode in described heating circuit.
Also reverse diode can be parallel with further at the two ends of diode in above-mentioned heating circuit.
The utility model is reasonable in design, by strengthening the methods such as the output voltage of Filament Winding or overstriking Filament Winding wire diameter, strengthen the loop current of heating circuit, because magnetron is in a sinusoidal cycles, half-wave is had to be that secondary winding is to capacitor charging, half-wave is had to be that overlap capacitance electric discharge produces microwave, and the sine wave thermal voltage of heating circuit input, the words heated respectively in each half-wave, the efficiency of magnetron has close to 5% difference, by series diode in heating circuit, make the power work of heating circuit in useful half-wave, so namely, the efficiency of magnetron can be made to improve, there is the negative electrode temperature rise that can ensure magnetron can not be too high.
Accompanying drawing explanation
Fig. 1 is the micro-wave oven high-voltage partial schematic diagram of embodiment 1.
Fig. 2 is the micro-wave oven high-voltage partial schematic diagram of embodiment 2.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1, composition graphs 1, a kind of microwave oven, comprises high-tension transformer 1 and magnetron 8, and high-tension transformer 1 comprises again skeleton 2, armature winding 3, secondary winding 4 and Filament Winding 5, and Filament Winding 5 and magnetron 8 negative electrode form heating circuit, anode of magnetron ground connection.Secondary winding 4 and high-voltage capacitance 6, high-voltage diode 7 form half-wave voltage-multiplying circuit, and diode 9 is serially connected in heating circuit.
Embodiment 2, composition graphs 2, a kind of microwave oven, comprises high-tension transformer 1 and magnetron 8, and high-tension transformer 1 comprises again skeleton 2, armature winding 3, secondary winding 4 and Filament Winding 5, and Filament Winding 5 and magnetron 8 negative electrode form heating circuit, anode of magnetron ground connection.Secondary winding 4 and high-voltage capacitance 6, high-voltage diode 7 form half-wave voltage-multiplying circuit, and diode 9 is serially connected in heating circuit, and diode 9 is parallel with reverse diode combinations, and the effect of backward diode in parallel does not allow the excessive temperature of magnetron cathode decline.
Claims (2)
1. a microwave oven, comprises magnetron and high-tension transformer, and high-tension transformer comprises again skeleton, Filament Winding and secondary winding, and Filament Winding and magnetron cathode connect to form heating circuit, it is characterized in that: series diode in described heating circuit.
2. microwave oven according to claim 1, is characterized in that: be parallel with reverse diode at the two ends of diode in described heating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081771.8U CN204350345U (en) | 2015-02-05 | 2015-02-05 | Microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081771.8U CN204350345U (en) | 2015-02-05 | 2015-02-05 | Microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204350345U true CN204350345U (en) | 2015-05-20 |
Family
ID=53233582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520081771.8U Active CN204350345U (en) | 2015-02-05 | 2015-02-05 | Microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204350345U (en) |
-
2015
- 2015-02-05 CN CN201520081771.8U patent/CN204350345U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |