Magnetron cathode assembly

A magnetron cathode and component technology, which is applied to the cathode of magnetron, multi-cavity magnetron, and time-of-flight electron tube, and can solve the problems of poor precision and other problems

Inactive Publication Date: 2005-03-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Then the problem arises again, the accuracy of preventing the rotation of the outer terminals 31, 32 from getting worse

Method used

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  • Magnetron cathode assembly
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  • Magnetron cathode assembly

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Embodiment Construction

[0041] Preferred embodiments of the magnetron cathode assembly according to the present invention will be described in detail below with reference to the accompanying drawings.

[0042] figure 1 One embodiment of a magnetron cathode assembly according to the invention is shown.

[0043] The magnetron cathode assembly 51 in this embodiment is used for magnetrons employed in microwave heating equipment such as electric ovens. The magnetron cathode assembly 51 comprises: a metal tube 15 joined to the open end edge of the anode block, coaxial with the anode block and forming part of a vacuum vessel; a coil-shaped cathode 17 arranged on the axis of the cathode block Part; a pair of cathode terminal leads 23 and 24, which support the cathode 17 through end caps 19 and 20, which are bonded to the leading ends of the cathode 17; a rod insulator 29, which is hermetically bonded to the metal tube 15, and has a pair of through holes 29a and 29b passing through the rod insulator 29 alo...

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Abstract

A magnetron cathode assembly which realizes stopping of turn of an external terminal inserted into a stem insulator without increasing a manufacturing cost. A leading end of a base end axial portion of an external terminal has a non-circular section by providing a flat surface in at least one position on its peripheral surface, and a straight stop edge that fits to the flat surface thereby to carry out stopping of turn of the external terminal is provided for a terminal fitting hole of a sealing metal plate into which the leading end of this external terminal is fitted.

Description

technical field [0001] This invention relates to a cathode assembly of a magnetron used in microwave heating equipment such as an electric furnace. Background technique [0002] Magnetrons are used in microwave heating equipment, such as Figure 6 As shown, it generally includes: a vacuum tube 1 located in the central part, a plurality of heat radiation fins 2 arranged around the vacuum tube 1, a pair of ring magnets 3 coaxially installed with the vacuum tube 1, and used to magnetically connect the two rings. A pair of frame yokes 4 of the magnet 3 , and a filter circuit portion 5 . [0003] In addition, the vacuum tube 1 includes: a cylindrical anode 6; a cathode assembly 7 arranged on the axis of the cylindrical anode 6; a plurality of sheet blades 8 arranged on the inner surface of the cylindrical anode 6 and The central axis of the anode 6 extends radially; a plurality of strip-shaped rings 9 and 10 electrically connect these blades alternately; [0004] The cathode as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/14H01J23/05H01J25/587
CPCH01J23/14H01J23/05H01J25/587
Inventor 齐藤悦扶石井健吉原正训大栗秀树塚田敏行
Owner PANASONIC CORP
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