Antenna fixing structure of magnetron for microwave oven

Abstract

The invention relates to an antenna fixing structure of a magnetron for a microwave oven. The antenna fixing structure comprises an antenna and blades arranged inside the positive electrode portion of the magnetron. The upper end of the antenna and the central shaft of the positive electrode portion of the magnetron are arranged coaxially; the upper end of the antenna passes through an antenna sealing cover and a ceramic ring of the magnetron and is connected with an upper sealing portion of an exhaust pipe. And the lower end of the antenna bends towards the outer side of the central shaft of the positive electrode portion and is fixedly with the blades mutually; and the distances between the inner sides of the blades and the antenna lower end and the blade fixing positions are increased by 10 to 15%. Because the fixing position of the antenna lower end is farther off the central shaft of the positive electrode portion of the magnetron, the electromagnetic compatible characteristic of the magnetron for the microwave oven can be improved under the circumstances that the magnetron characteristic remains unchanged, thereby reducing the secondary harmonics well.

Description

technical field [0001] The invention belongs to the technical field of magnetrons, and in particular relates to an antenna fixing structure of a magnetron for a microwave oven that improves the electromagnetic compatibility characteristics of the magnetron while keeping the characteristics of the magnetron unchanged. Background technique [0002] figure 1 It is a longitudinal sectional view of a magnetron structure in the prior art; figure 2 is a structural schematic diagram of the position of the magnetron exhaust pipe in the prior art; image 3 It is a schematic diagram of the 6δ management of the antenna fixing structure of the magnetron used in the microwave oven in the prior art. [0003] like Figure 1 to Figure 2 As shown, the magnetron mainly includes: a positive electrode part; a negative electrode part; a magnetic pole part; a microwave transmitting part. The anode part consists of a barrel-shaped anode casing 11, on the inner wall of the anode casing 11, a pl...

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Problems solved by technology

[0015] However, the antenna fixing structure of the magnetron used in the microwave oven in the prior art cannot effectively reduce the second harmonic wave of the magnetron, thereby degrading the electromagnetic compatibility characteristics of the magnetron used in the microwave oven, thereby causing damage to the human body and electrical components around the microwave oven. Negative Effects

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