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Magnetron and Microwave Utilization Equipment

A magnetron and equipment technology, applied in the field of microwave utilization equipment, can solve the problems of prominent length deviation, adverse effects on the characteristics of the choke coil 112, and the inability to determine the positional relationship of the choke coil with high precision, so as to achieve the effect of improving quality

Active Publication Date: 2016-07-27
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, as shown in Patent Document 1, when the end portion of the choke coil 112 connected to the tip 113a of the cathode-side terminal 113 is linear, the choke coil 112 tends to move in the direction in which the choke coil 112 extends (direction A). ), the positioning of the choke coil 112 cannot be performed with high precision
That is, the positional relationship between the choke coil 112 and the cathode-side terminal 113 cannot be determined with high precision, and the protruding length d of the connecting end portion 112a varies.
If the positioning of the choke coil 112 is not carried out with high precision during welding, etc., the characteristics of the choke coil 112 may be adversely affected, and there is a problem that the quality of the magnetron 100 is degraded.

Method used

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  • Magnetron and Microwave Utilization Equipment
  • Magnetron and Microwave Utilization Equipment
  • Magnetron and Microwave Utilization Equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] figure 1 It is a partially cutout schematic cross-sectional view obtained by cutting a part of the magnetron 1 according to Embodiment 1 of the present invention. figure 1 The left side of the figure is a side view of the magnetron 1, and the right side is a cross-sectional view of the magnetron 1. like figure 1 As shown, the magnetron 1 has a choke coil 2 , a cathode-side terminal 3 , an anode 4 , a cathode 5 , a capacitor 6 for supplying power from the outside, and a rod 7 . The magnetron 1 has these structures, and generates microwaves. The part on the upper side of the rod 7 including the anode 4 and the cathode 5 is the main body 8 of the magnetron 1 . The choke coil 2 and the capacitor 6 included in the magnetron 1 constitute an LC filter circuit of the magnetron 1 that prevents leakage of microwaves to the outside. Furthermore, in the following description, the figure 1 The left-right direction is the X direction, the up-down direction is the Y direction...

Embodiment approach 2

[0048] Figure 4 It is a perspective view of the periphery of the LC filter circuit included in the magnetron 10 according to Embodiment 2 of the present invention, and shows the connection relationship between the choke coil 12 and the cathode-side terminal 13 .

[0049] The second embodiment differs from the first embodiment only in the shape of the cathode-side terminal 13, and the shape of the choke coil 12 and the like are the same.

[0050] The cathode-side terminal 13 in Embodiment 2 has a substantially cylindrical shape. like Figure 4 As shown in FIG. 13a. The bent portion 12c is in contact with the front end portion 13a of the cathode-side terminal 13 .

[0051] According to such a structure, movement of the choke coil 12 is restricted in the direction (Z direction) in which the terminal part 12a of the choke coil 12 passes the front-end|tip part (curved part) 13a of the cathode side terminal 13. As shown in FIG. Therefore, the positioning of the choke coil 12 w...

Embodiment approach 3

[0053] Figure 5 It is a perspective view of the periphery of the LC filter circuit included in the magnetron 20 according to Embodiment 3 of the present invention, and shows the connection relationship between the terminal portion 22 a of the choke coil 22 and the cathode-side terminal 23 .

[0054] Embodiment 3 differs from Embodiment 2 only in the shape of the cathode-side terminal 23 , and the shape of the choke coil 22 and the like are the same.

[0055] In Embodiment 3, the cathode-side terminal 23 is formed in a substantially cylindrical shape, and the front end portion 23a is formed in a substantially O-shape. like Figure 5 As shown in FIG. . The bent portion 22c is in contact with the front end portion 23a of the cathode-side terminal 23 .

[0056] According to such a structure, the movement of the choke coil 22 to the direction (Z direction) in which the terminal part 22a of the choke coil 22 passes the front-end|tip part (curved part) 23a of the cathode side te...

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Abstract

The invention discloses a magnet-controlled tube and a microwave-using apparatus. The magnet-controlled tube has a choking ring and a cathode side terminal, wherein the choking ring has a coil part constituted by thread and a terminal part by extending thread from an end of the coil part; the cathode side terminal is connected with the terminal of the choking ring to supply power to the choking ring from outside; the cathode side terminal has a bending part; the bending part is bent to contact at the periphery of the thread on the terminal of the choking ring; the terminal of the choking ring has a thread curving part; the thread curving part is in contact against the bending part of the cathode side terminal. Therefore, of the choking ring can be positioned with high precision, and quality of the magnet-controlled tube can be improved.

Description

technical field [0001] The present invention relates to a magnetron for generating microwaves and a microwave utilization device provided with the magnetron. Background technique [0002] A magnetron is a type of bipolar vacuum tube, and as an electron tube for generating microwaves, it is widely used in microwave communication devices and home appliances. Magnetrons are widely used, for example, as main components of microwave ovens. A magnetron incorporated in a microwave oven irradiates food with microwaves. Thus, the food is heated and cooked by means of medium heating. [0003] Existing magnetrons of this type have, for example Figure 7 The structure shown (for example, refer patent document 1). [0004] Figure 7 It is a plan view schematically showing the periphery of the filter circuit included in the conventional magnetron 100 . like Figure 7 As shown, the magnetron 100 has a feedthrough capacitor 111 having a pair of terminals for power supply from the outsid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J25/50H01J23/15
Inventor 斋藤悦扶村尾则行半田贵典石井健金田克彦
Owner PANASONIC CORP