Magnetron

A magnetron and magnet technology, applied in the field of magnetrons, can solve the problems of magnetron operation, frequent failures, etc.

Inactive Publication Date: 2006-08-02
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the magnetron is installed on a product placed outdoors such as a lighting device, the inlet / outlet on the casing will allow rain, dust, and insects to enter, causing operational problems and frequent failures of the magnetron

Method used

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Embodiment Construction

[0053] Preferred embodiments of the present invention will now be described in detail with reference to examples shown in the accompanying drawings. When describing the embodiments of the present invention, the same components are represented by the same names and symbols, which will not be repeated.

[0054] The magnetron of the present invention includes an oscillating part with a resonant space inside and a cylindrical anode 11 with a cathode inside; a magnetic circuit part with a pair of magnets 12a and 12b above and below the anode 11 and a The magnetic yoke 1 outside the anode 11 and the magnets 12a and 12b together constitute a closed magnetic circuit; an input part that provides power to the oscillating component; a conventional component that keeps the magnetron hermetically sealed; microwaves generated by the oscillating component and the magnetic circuit component an output to the outside of the magnetron; and cooling means for cooling the magnetron having a primary...

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Abstract

A magnetron includes a cylindrical anode having a resonant space formed therein and a cathode fitted therein, magnets fitted to upper and lower sides of the anode, a yoke fitted on outsides of the anode and the magnets to form a closed circuit, and cooling devices including a main cooling device to form a heat discharge path from the anode, and a supplementary cooling device to form a heat discharge path from the magnet direct or indirectly, wherein the main cooling device is an anode heat conductor having one end closely fitted to an outside surface of the anode, and the other end passed to the yoke and exposed to an external air, and the supplementary cooling device includes a magnet heat conductor closely fitted to an outside surface of the magnet, the magnet heat conductor having one side in contact with the outside case of the magnetron, or a yoke heat conductor closely fitted to an outside surface of a yoke plate, the yoke heat conductor having one side in contact with the outside case of the magnetron.

Description

[0001] This application refers to Korean applications filed on April 18, 2002 with application numbers P2002-21231 and P2002-21232. technical field [0002] The present invention relates to a magnetron with improved self-cooling properties. Background technique [0003] Magnetrons are commonly used in microwave ovens, plasma light emitting devices, dryers, and other microwave systems. [0004] A magnetron is a vacuum tube that emits thermoelectrons from a cathode serving as a power source, and the thermoelectrons emit microwaves under the action of a strong electromagnetic field. Microwaves are sent through an antenna or feeder and act as a heat source for heating substances. [0005] Generally, a magnetron has an oscillating part and a magnetic circuit for generating microwaves, an input part for receiving and supplying power to the oscillating part, an output part for sending microwaves generated by the oscillating part and the magnetic circuit part, and a cooling magnet....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/00H01J25/50H05K7/20F24C7/02H01J25/52H01J25/587
CPCH01J23/005H01J25/50
Inventor 李容守李钟寿
Owner LG ELECTRONICS INC
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