KR100690699B1 - Magnetron - Google Patents

Abstract

A magnetron is provided to quickly connect a lead of a choke coil with a lead of a condenser, without carrying out a welding process. A magnetron includes a high-frequency generating unit(100) generating high-frequency energy, an input unit(200) applying a power to the high-frequency generating unit, and a high-frequency output unit formed on one side of the high-frequency generating unit for outputting the high-frequency energy. The high-frequency generating unit has a cylindrical anode(121), a cathode(151) disposed at a center of the anode, a lower magnet(143) disposed under the anode, and an insulation member(181) disposed in the lower magnet. The input unit has a choke coil(231) vertically disposed in the insulation member, a coupling disc disposed for closing a lower opening of the insulation member, a condenser(241) connected to the coupling disc.

Description

Magnetron {MAGNETRON}

1 is a cross-sectional view of a conventional magnetron,

2 is a cross-sectional view of a magnetron according to an embodiment of the present invention;

3 is an enlarged view illustrating main parts of FIG. 2;

4 is a view illustrating a state before coupling of the capacitor of FIG. 3;

5 is a cross-sectional view taken along the line VV of FIG. 3;

6 is an enlarged view of the connecting disk of FIG. 3;

7 and 8 are views for explaining a connection state of the ground plate of the magnetron according to another embodiment of the present invention, respectively.

Explanation of symbols on the main parts of the drawings

100: high frequency generator 111: yoke plate

121: Anode 125: Vane

143: lower magnet 145: lower magnetic pole

151 cathode 165 center lead

166: side lead 171: shielding member

181: insulating member 185: sealing member

200: input unit 221: connecting disk

223 disc body 224 choke lead connection

225: capacitor lead connection 227: conductor

231 choke coil 241 condenser

242: housing 243: terminal

249: insulation case 250: ground plate

The present invention relates to a magnetron, and more particularly, to a magnetron that can be reduced in size and eliminates welding work during lead connection.

1 is a cross-sectional view of a conventional magnetron. As shown in this figure, the magnetron is a high frequency generator 100 for generating high frequency energy, and an input unit 200 formed below the high frequency generator 100 to apply power to the high frequency generator 100. ) And a high frequency output unit 300 formed above the high frequency generator 100 to emit high frequency energy generated by the high frequency generator 100.

The high frequency generator 100 includes a yoke plate 111 having a rectangular cylindrical shape, a cylindrical anode 121 disposed in the center region of the yoke plate 111, and an upper end and a lower end of the anode 121. The acyl 131 and the f sill 141, the upper magnet 133 and the upper stimulus 135, which are disposed on the upper side of the anode 121, and the lower side of the anode 121, respectively, are disposed. The lower magnet 143 and the lower magnetic pole 145, the cathode 151 disposed at the center of the anode 121, and the upper end shield 155 and the lower end disposed at the upper and lower ends of the cathode 151, respectively. A shield 159, a center lead 161 and a side lead 163 connected to the upper end shield 155 and the lower end shield 159, respectively.

The input unit 200 is accommodated in the filter box 211 formed at the lower side of the yoke plate 111, the condenser 213 coupled to one side of the filter box 211, and the filter box 211. It is formed to have a choke coil 215 connected to the condenser 213 and an external connection lead 217 extending from the choke coil 215 and electrically connected to the center lead 161 and the side lead 163. .

The output unit 300 includes an antenna feeder 311 having one end connected to the high frequency generator 100 and an aceramic 313 disposed above the ACIL 131 and having the antenna feeder 311 accommodated therein. And an antenna cap 315 disposed above the ceramic 313.

On the other hand, a plurality of cooling fins 113 are laminated and coupled to the inside of the yoke plate 111 for heat dissipation of the anode 121, and the working space between the cathode 121 and the cathode 151 ( A plurality of vanes 125 are provided radially so that 122 is formed. The ceramic stem 147 is provided at the lower end of the F chamber 141. Here, the internal space formed by the ceramic stem 147, the anode 121, the acyl 131, and the f-sil 141 is maintained in a vacuum.

The cathode 151 is formed in a spiral shape, and the upper end shield 155 and the lower end shield 159 are coupled to the upper and lower ends of the cathode 151, respectively. The center lead 161 is coupled to the lower end shield 159, and the side lead 163 is connected to one side thereof. The center lead 161 passing through the lower end shield 159 is coupled to the upper end shield 155 through the cathode 151, and the upper end shield 155 is integrally connected to the upper end of the cathode 151. It is.

However, in the conventional magnetron, the center lead 161 and the side lead 163 are disposed to extend downward in the F chamber 141, and the ceramic stem 147 is coupled to the lower end of the F chamber 141. The choke coil 215 is welded to the external connection lead 217 extending downward from the inside of the ceramic stem 147 in the state, so that the welding equipment is required to connect each lead and the joining time is increased due to the welding operation. In addition to extending the size of the filter box 211 to maintain the insulation distance between the components there is a problem that the overall size of the magnetron is increased.

It is therefore an object of the present invention to provide a magnetron that can be reduced in size and can eliminate welding operations when connecting leads.

The object is, according to the present invention, a cylindrical anode, a cathode disposed at the center of the anode, a cylindrical lower magnet disposed below the anode, and a downward opening disposed inside the lower magnet. A high frequency generator having an insulating member for generating high frequency energy; A connecting disc having a choke coil disposed along the up and down direction of the insulating member and blocking the lower opening of the insulating member, and having a lower end of the choke coil connected to an upper surface thereof and a condenser lead connecting portion formed at a bottom thereof; An input part having a condenser connected to the connection disc and having a lead protruding to be inserted into the condenser lead connection part at an upper end thereof to supply power to the high frequency generating part; It is achieved by a magnetron including a high frequency output unit formed on one side of the high frequency generator to output the high frequency energy generated by the high frequency generator.

Here, the capacitor preferably further includes an insulating case formed to surround the outer surface of the connection disk.

The high frequency generating unit may further include a shielding member disposed inside the lower magnet to suppress leakage of high frequency energy, and the condenser may further include a ground plate in contact with the shielding member.

The lower portion of the insulating member is preferably configured to form an insertion portion reduced in the thickness direction to be inserted between the ground plate and the insulating case.

The high frequency generating unit may be configured to further include a sealing member one side is coupled to the upper surface of the shielding member and the other side is coupled to the upper surface of the insulating member.

The connecting disk is an insulator formed into a disc shape so as to be inserted into the insulating member and a condenser lead connecting portion is formed on a bottom surface thereof, and the lead of the choke coil is recessed to be inserted into an upper surface of the disk body. It is preferable to include a choke lead connection portion formed and a conductor disposed inside the disc body so that the lead of the choke coil and the lead of the capacitor are electrically connected to each other.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

2 is a cross-sectional view of the magnetron according to an embodiment of the present invention, FIG. 3 is an enlarged view of the main part of FIG. 2, FIG. 4 is a view illustrating a state before coupling of the capacitor of FIG. 3, and FIG. 5 is of FIG. 3. 6 is an enlarged view of the connecting disk of FIG. 3, and FIGS. 7 and 8 are views for explaining a connection state of the ground plate of the magnetron according to another embodiment of the present invention. . The same and equivalent parts as those described above and shown in the drawings will be described with the same reference numerals for convenience of description. As shown in these figures, the magnetron has a cylindrical anode 121, a cathode 151 disposed at the center of the anode 121, and a cylindrical lower portion disposed below the anode 121. A high frequency generator 100 having a magnet 143 and a downwardly open insulating member 181 disposed inside the lower magnet 143 and generating high frequency energy; The choke coil 231 disposed in the up-and-down direction inside the insulating member 181, and is arranged to block the lower opening of the insulating member 181, the lower end of the choke coil 231 is connected to the upper surface and the condenser on the bottom surface A condenser 241 having a connecting disk 221 having a lead connecting portion 225 formed thereon and a lead 244 protruding to be inserted into the capacitor lead connecting portion 225 at an upper end thereof and connected to the connecting disk 221. An input unit 200 for applying power to the high frequency generator 100; It is configured to include a high frequency output unit 300 formed on one side of the high frequency generator 100 to output the high frequency energy generated by the high frequency generator 100.

The output unit 300 includes an antenna feeder 311 having one end connected to the high frequency generator 100 and an aceramic 313 disposed above the ACIL 131 and having the antenna feeder 311 accommodated therein. And an antenna cap 315 disposed above the ceramic 313.

The high frequency generator 100 includes a yoke plate 111 having a rectangular cylindrical shape, a cylindrical anode 121 disposed in the center region of the yoke plate 111, and an upper end and a lower end of the anode 121. The acyl 131 and the f sill 141, the upper magnet 133 and the upper stimulus 135, which are disposed on the upper side of the anode 121, and the lower side of the anode 121, respectively, are disposed. The lower magnet 143 and the lower magnetic pole 145, the cathode 151 disposed at the center of the anode 121, and the upper end shield 155 and the lower end disposed at the upper and lower ends of the cathode 151, respectively. A shield 159, a center lead 165 and a side lead 166 connected to the upper end shield 155 and the lower end shield 159, respectively, are provided.

A plurality of vanes 125 are radially disposed on an inner surface of the anode 121 so as to form a working space 122 between the cathode 151 and an outer surface of the anode 121. A plurality of cooling fins 113 are stacked and coupled for cooling. The lower magnetic pole 145 is disposed below the anode 121, and the lower magnet 143 having a cylindrical shape having a hole 144 formed therein is disposed below the lower magnetic pole 145.

On the other hand, the inner surface of the hole 144 of the lower magnet 143 is coupled to the shield member 171 made of a metal member to suppress the leakage of high frequency energy. The shielding member 171 extends in the radial direction on the upper end of the cylindrical portion 172 and the upper end of the cylindrical portion 172 in contact with the inner surface of the hole 144 of the lower magnet 143, the upper surface of the lower magnet 143 And a flange portion 173 in contact with it. An insulating member 181 is formed inside the cylindrical portion 172 to have a cylindrical shape which is downwardly opened by ceramics, etc., and an upper end surface of the insulating member 181 is almost the same as the upper surface of the flange portion 173. It is arranged to have a height.

The sealing member 185 is coupled to the upper surface of the flange portion 173 and the insulating member 181 to block a gap between the flange portion 173 and the insulating member 181 so that the inside thereof may be maintained in a vacuum state. Coupling holes 184 are formed on the upper surface of the insulating member 181 so that each of the lower ends of the center lead 165 and the side lead 166 may be inserted into and coupled with each other, and the thickness of the insulating member 181 may be reduced. The insertion unit 182 is formed. The input unit 200 is disposed below the insulating member 181 to apply power to the high frequency generator 100.

The input unit 200 is arranged to block the choke coil 231 disposed in the up and down direction in the insulating member 181 and the lower opening of the insulating member 181, and the lower end of the choke coil 231 is disposed on the upper surface thereof. A connecting disk 221 connected to the bottom surface and having a condenser lead connecting portion 225 formed thereon, and a lead 244 protruding to be inserted into the condenser lead connecting portion 225 at an upper end thereof. A condenser 241 to be connected is provided.

The choke coil 231 is disposed in the up and down direction of the insulating member 181, and the upper end of each choke coil 231 is blazed at each lower end of the center lead 165 and the side lead 166. ) It is connected in one piece using construction methods.

The connecting disk 221 is a disk body 223 which is formed to have a disk shape with an insulating member 181 such as ceramic, and one side of the disc body is in contact with each lower lead of the choke coil 231, respectively. The other side includes a conductor 227 disposed in contact with the lead 244 of the capacitor 241 to electrically connect the choke coil 231 and the capacitor 241 to each other.

On the upper surface of the disc body 223, the choke lead connecting portions 224 are formed to be recessed downward so that the lower leads of the choke coils 231 can be inserted, and the leads 244 of the condenser 241 are formed on the bottom surface thereof. The capacitor lead connecting portion 225 is formed to be recessed upward so as to be connected to each other. The inner surface of the capacitor lead connecting portion 225 is surface treated to enable energization by metalizing or the like.

The capacitor 241 includes a housing 242 forming an accommodation space therein, a terminal 243 disposed to be spaced apart from each other in the housing 242, a dielectric 245, and a resin member such as epoxy. An insulating layer formed of an insulating material on the inside of the ground plate 250 and the filling layer 247 filled around the dielectric layer 245, the ground plate 250 extending outside the housing 242, and the inside of the ground plate 250. A case 249 is provided.

The terminal 243 protrudes outward from the housing 242 and extends upward, and is insulated to surround the connecting disc 221 around the choke coil 231 side lead 244 of the terminal 243. The case 249 is formed. The outer side of the insulating case 249 is electrically connected to the shielding member 171 and fixedly coupled to the shielding member 171 to prevent the condenser 241 connected to the connecting disk 221 from being separated. The ground plate 250 is formed. In this embodiment, the ground plate 250 is configured to be press-fitted with a predetermined fastening around the shield member 171. Here, as illustrated in FIG. 7, the hook 175 may be formed on the shielding member 171 and the hook hole 251 may be formed to be engaged with the hook 175 on the ground plate 250. As shown in FIG. 8, the ground plate 50 may be integrally fixed to the shielding member 171 by fastening the screw 176. In addition, the shielding member 171 and the ground plate 250 may be welded to be integrally configured.

 By such a configuration, the choke coil 231 is disposed inside the insulating member 181 coupled to the shielding member 171 and the sealing member 185 by using a jig, and connected to the lower end of the choke coil 231. After disposing the disk 221, each end of the choke coil 231 is integrally coupled to the center lead 165, the side lead 166, and the connecting disk 221 by a method such as blazing. Next, when the lead 244 of the terminal 243 of the capacitor 241 is inserted into the capacitor lead connecting portion 225 of the connecting disk 221, the shielding member 171 is interposed between the insulating case 249 and the ground plate 250. And the insertion portion 182 of the insulating member 181 is inserted and combined integrally. As a result, the periphery of the choke coil 231 is insulated by the insulating member 181, the connecting disk 221, and the insulating case 249, and the leakage of the high frequency energy is suppressed by the shielding member 171.

As described above, according to the present invention, it is possible to reduce the internal space of the conventional F-seal and the filter box to reduce the size and to eliminate the welding work when connecting the lead of the choke coil and the lead of the condenser The effect of speeding up this is provided.

In addition, according to the present invention, the length of the center lead and the side lead can be shortened, and the use of the conventional external connection lead can be eliminated, so that the material cost can be reduced, and the welding equipment accompanying the external connection lead is combined. There is an advantage that the use can be eliminated and the joining time is shortened.

Claims (6)

A cylindrical anode, a cathode disposed at the center of the anode, a cylindrical lower magnet disposed below the anode, and a downwardly open insulating member disposed inside the lower magnet to generate high frequency energy. A high frequency generator for generating; A choke coil disposed along the up and down direction of the insulating member, and a connection disk disposed to block a lower opening of the insulating member, and a lower end of the choke coil is connected to an upper surface thereof, and a condenser lead connecting portion is formed on a bottom surface thereof; An input part having a condenser connected to the connection disc and having a lead protruding to be inserted into the condenser lead connection part at an upper end thereof to supply power to the high frequency generating part; And a high frequency output unit formed on one side of the high frequency generator to output high frequency energy generated by the high frequency generator. The method of claim 1, The capacitor further comprises an insulating case formed to surround the outer surface of the connecting disk. The method of claim 2, The high frequency generator further includes a shielding member disposed inside the lower magnet to suppress leakage of high frequency energy, and the capacitor further includes a ground plate in contact with the shielding member. The method of claim 3, And a lower portion of the insulating member having an insertion portion reduced in a thickness direction to be inserted between the ground plate and the insulating case. The method of claim 3, The magnetron further comprises a sealing member, one side of which is coupled to an upper surface of the shielding member and the other side of which is coupled to an upper surface of the insulating member. The method according to any one of claims 1 to 5, The connecting disk is an insulator formed into a disc shape so as to be inserted into the insulating member and a condenser lead connecting portion is formed on a bottom surface thereof, and the lead of the choke coil is recessed to be inserted into an upper surface of the disk body. And a conductor formed so that the lead of the choke coil and the lead of the capacitor are electrically connected to each other inside the disc body.

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