Cathode assembly of magnetron for microwave oven and magnetron thereof

Abstract

The invention discloses a magnetron for a microwave oven and a cathode assembly of the magnetron. The cathode assembly comprises a ceramic. Two wiring terminals are inserted into the bottom of the ceramic, a center wire and a side wire are respectively inserted into the upper end surface of the ceramic, an upper block piece, a lamp filament and a lower block piece sequentially sleeve the upper portion of the center wire from top to bottom, the lower block piece is connected with the upper end of the side wire, a circle of downwardly oblique portion is formed at the outer peripheral edge of the upper block piece, and a circle of receiving structure capable of receiving titanium liquid which flows down from the oblique portion is formed at an end of the oblique portion. The magnetron for the microwave oven comprises an output assembly, an upper magnetic pole piece, an anode assembly, a lower magnetic pole piece and the cathode assembly which are sequentially arranged from top to bottom. The magnetron and the cathode assembly have the advantages that the titanium liquid is blocked by protrusions at the edge of the cathode assembly and is not easy to flow down from the edge of the cathode assembly after the titanium liquid drips from the upper block piece and then slips along the upper block piece, accordingly, the lamp filament can be prevented from being contaminated, and the quality of the magnetron can be guaranteed.

Description

technical field [0001] The invention relates to a magnetron. In particular, it relates to a cathode assembly of a magnetron for a microwave oven capable of overcoming filament pollution and the magnetron. Background technique [0002] Microwave oven (microwave oven / microwave), as the name suggests, uses microwaves to cook meals. Microwave oven is a kind of modern cooking stove that heats food with microwave, and described microwave is a kind of electromagnetic wave. A microwave oven is composed of a power supply, a magnetron, a control circuit, and a cooking cavity. The power supply provides a high voltage of about 4000 volts to the magnetron. Under the excitation of the power supply, the magnetron continuously generates microwaves, and then couples into the cooking cavity through the waveguide system. Near the entrance of the cooking cavity, there is a rotatable stirrer, because the stirrer is a fan-shaped metal, which can reflect microwaves in all directions after rotat...

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Problems solved by technology

[0006] However, the existing peripheral portion of the upper baffle 51 located at the upper end of the filament is as Figure 4 The flat design shown in the figure, when the dripping titanium liquid falls on the upper baffle 51, it is easy to flow down from the edge of the circumference, causing contamination of the filament and affecting the quality of the magnetron

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