Fixing structure located in electronic action space center for magnetron helical heater

Abstract

The invention relates to the fixed structure of the permatron twist filament in the center of the electron effect space. It belongs to the permatron technique field. The twist filament made up of the thorium and the tungsten filament sets in the center of the permatron. The T-shape upper cover is embedded in the upper end of the twist filament and the ring lower base is embedded in the lower end. The side leader joints the underside of the ring lower base and it is the leading pole of the twist filament. The center leader crosses the twist filament and the core of the ring lower base, joints the upper cover and is another leading pole of the twist filament. Its character is as follow. There is a ring groove on the lower base. It makes the twist filament insert conveniently and fix in the center of the permatron electron effect space. The ring groove on the lower base is connected with the center of it. The ring groove on the lower base is connected with the lower end of the twist filament.

Description

Technical field [0001] The invention belongs to the technical field of magnetrons, and relates to a fixed structure in which a spiral filament of a magnetron is located at the center of an electron action space. Background technique [0002] The magnetron is the heart of the microwave oven, a magnetron two-pole vacuum device and an ultrashort wave power tube. The continuous wave magnetron used in household microwave ovens uses a direct current voltage between the anode and cathode during operation, which is converted into micro electromagnetic waves to heat the food. The water molecules in the food are vibrated by electromagnetic waves, and then the heat generated by vibration and friction is used to make Food heating. Therefore it is also an energy converter. The structure of the magnetron is as figure 1 , 2 Shown is composed of die, magnet, and cooling part. The following are respectively explained: [0003] 1. Tube core: consists of cathode 4, filament 11, anode 3, antenna 1 ...

AI Technical Summary

Problems solved by technology

The indirect heating cathode is to add a cylinder around the heating filament as the cathode, and indirectly heat the cathode through the heating filament to make it emit electrons. The disadvantage is that the preheating time is prolonged due to indirect heating

[0010] but if image 3 , 4 Existing magnetron helical filament as shown in 5, owing to be installed in the shallow garden groove 9 li of lower end seat, be subjected to the uneven influence of spiral two ends, make filament and the upper end can not be in the center of electronic action space, therefore have influenced the thermionic emission Uniformity thus affects the characteristics of the magnetron

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