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A technology of support body and main through hole, applied in the field of microwave oven components, can solve the problems of breakdown tube wall, thermal electron influence, touch, etc., and achieve the effect of prolonging service life, preventing mutual contact and good fixing effect

Active Publication Date: 2013-12-11
无锡康伟工程陶瓷有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the two cathode leads of the magnetron are in an unfixed state, they will easily touch each other and cause sparking to generate high-voltage current. The high-voltage current will break down the tube wall and affect the service life of the magnetron.
Another situation is that if a central wire in the cathode lead is in an unfixed state, it is very easy to touch the bottom shield in the magnetron, causing a short circuit and shortening the service life of the magnetron; even if it does not cause a short circuit, the central The wire deviates from its normal position in the tungsten wire coil, which will also affect the emitted thermal electrons, resulting in uneven surrounding magnetic fields and affecting the use of the magnetron

Method used

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0014] Such as figure 1 , 2 , 3, the support body 1 proposed by the present invention has a vertical main through hole 11, and a vertical side through hole 12 is opened on one side of the main through hole 11. The middle and lower apertures of the main through hole 11 are larger than the top aperture, and there is a transition tapered cavity 14 between the top and the middle of the main through hole 11; An auxiliary chamber 13 is formed on the side, and the auxiliary chamber 13 communicates with the middle and lower parts of the main through hole 11 .

[0015] The main function played by the main through hole 11 is to fix a central wire 24 in the cathode lead wire of the magnetron (such as Figure 4 shown), and make the central wire 24 and the other side wire 25 in the cathode lead a safe distance away, so that there will be no contact between the two and sh...

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Abstract

The invention provides a supporter. A vertical main through hole is formed in the supporter, and a vertical lateral through hole is formed in one side of the main through hole. Furthermore, the diameter of the middle portion of the main through hole and the diameter of the lower portion of the main through hole are respectively larger than the diameter of the top portion of the main through hole, and a transition conical cavity is formed between the top portion of the main through hole and the middle portion of the main through hole. An auxiliary cavity is formed in the side, opposite to the lateral through hole, of the middle portion of the main through hole and the lower portion of the main through hole, and the auxiliary cavity is communicated with the middle portion of the main through hole and the lower portion of the main through hole. Furthermore, a horn-shaped opening is formed in the top portion of the lateral through hole, and the bottom of the horn-shaped opening is provided with a transition platform. The supporter is made of aluminum oxide ceramics. The supporter can well fix cathode leading wires of a magnetron, effectively prevent a central wire in the cathode leading wires from touching a bottom shielding member, also prevent the two cathode leading wires from touching each other, and effectively prolong the service life of the magnetron.

Description

technical field [0001] The invention relates to a microwave oven part, in particular to a support used in conjunction with a magnetron lead wire. Background technique [0002] A magnetron is an electric vacuum device used to generate microwave energy, essentially a diode placed in a constant magnetic field. The cathode of the magnetron is the emitter of electrons. The performance of the cathode has a great influence on the working characteristics and life of the magnetron, and it is the heart of the entire magnetron. When the cathode lead of the magnetron is working, it is connected to negative high voltage and the temperature is very high. If the two cathode leads of the magnetron are in an unfixed state, they will easily touch each other to cause sparking and generate high-voltage current. The high-voltage current will break down the tube wall and affect the service life of the magnetron. Another situation is that if a central wire in the cathode lead is in an unfixed st...

Claims

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Application Information

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IPC IPC(8): H01J23/14
Inventor 朱广汇
Owner 无锡康伟工程陶瓷有限公司
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