KR100617154B1 - Input unit in magnetron - Google Patents

Abstract

The present invention relates to a magnetron, the volume of which is reduced, and relates to the input of the magnetron is easy to assemble.

To this end, the present invention is formed by surrounding the circumference between the choke coil and the condenser and the filter box forming the outer appearance of the high voltage electricity with an insulating member, between the portion of the high voltage electricity is supplied and the filter box There is no need to form an insulation distance to the magnetron provides an input portion that can reduce the size of the input portion.

In addition, the insulating member and the filter box are formed to be slidable so that the part where the choke coil and the condenser are welded to the input part is in communication with the outside, thereby providing an input part of the magnetron having an effect of easily assembling the input part of the magnetron. .

Magnetron, Choke Coil, Condenser, Input

Description

Input unit in magnetron

1 is a cross-sectional view showing a schematic configuration of a conventional magnetron.

Figure 2 is a cross-sectional view showing an open state of the input portion of the magnetron of the present invention.

Figure 3 is a cross-sectional view showing a state in which the input portion of the magnetron of the present invention is closed.

Figure 4 is a cross-sectional view showing another embodiment of the input portion of the magnetron of the present invention.

* Description of Signs of Major Parts of Drawings *

101: condenser 102: choke coil

103: f seal 104: center lead

105: side lead 111: first insulating member

112: second insulating member 121: filter box

122: coupling hole 123: ground plate

124: projection

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetron, and more particularly, to an input of a magnetron having an improved structure to facilitate assembly of a capacitor to which electric power is applied.

In general, magnetrons are applied to microwave ovens, plasma lighting equipment, dryers and other high frequency systems. The magnetron is used as a heat source for heating the target by generating a microwave by the electromagnetic field of the hot electrons emitted to the cathode by applying power, and outputs the microwave through the antenna Peter.

The magnetron is roughly divided into a high frequency generator for generating high frequency energy by an electromagnetic field, an input unit for applying power to the high frequency generator, and an output unit for emitting high frequency energy from the high frequency generator.

1 is a block diagram illustrating a structure of a conventional magnetron. Referring to the magnetron, a yoke upper plate 1a and a yoke lower plate 1b are installed inside an outer case, and a high frequency output unit is provided on an upper portion of the yoke upper plate 1a. A high frequency generator is installed inside the upper and lower yoke plates (hereinafter, referred to as a "yoke plate"), and an input part is provided below the yoke lower plate 1b.

The input unit has a filter box 22 fixed to the lower portion of the yoke lower plate 1b, a capacitor 23 installed in the filter box to supply power, and a choke coil 23a connected to the capacitor to receive current. And an external connection lead 23b extending from the choke coil.

The generating unit is provided with a cylindrical anode 11 in the center of the yoke plate 1, an acyl 14a is installed at the upper end of the anode 11, and an F-silk at the lower end of the anode 11; 14b) is provided, and the upper magnet 12a and the lower magnet 12b are respectively installed outside the Asil 14a and the Fsil 14b. In addition, on the inner surfaces of the f-sil 14b and the ac-il 14a, a box electrode 13a and a retarder 13b are provided to be symmetrical with respect to the vane 15 up and down, and the f-sil 14b. At the lower end of the ceramic stem 21 is installed to seal the lower end of the F chamber 14b.

The inner surface of the anode 11 is provided with a vane 15 radially to form a working space 15a in the center, a cathode 16 is installed in the working space 15a, the cathode ( The center lead 17a and the side lead 17b are installed in the 16 to support the cathode 16, and the center lead 17a and the side lead 17b are electrically connected to the external connection lead 23b. .

One end of the plurality of cooling fins 33 is installed on the outer surface of the anode 11, and the other end of the cooling fins 33 is installed on the yoke plate 1. An air cooling fan (not shown) is installed outside the yoke plate 1, and an inlet (not shown) and an outlet (not shown) are formed in the outer case so that outside air is sucked and discharged by the air cooling fan.

Accordingly, heat generated by the loss of the high frequency radiation that is not emitted in the anode 11 is transferred to the anode 11, and the heat of the anode 11 is transferred to the yoke plate through the cooling fin 33. Is passed on to (1). The heat transferred to the yoke plate is exchanged with the outside air by operating the air cooling fan.

The high frequency output unit includes an antenna feeder 32 and an ceramic 31. The antenna feeder 32 has one end connected to the vane 15 and the other end connected to the antenna cap (not shown). It is installed to enclose, and the aceramic 31 is installed between the upper end of the acyl (14a) and the antenna cap. Accordingly, the microwaves transmitted through the antenna feeder 32 reach the target object through the ceramic 31.

 The function of the magnetron having such a configuration will be described as follows.

The magnetron emits hot electrons from the cathode 16 connected thereto as a current is applied to the center lead 17a through an external connection lead 23b, and the emitted hot electrons are emitted from the inner surface of each vane 15 and the cathode. It is located in the working space (15a) formed between (16). In addition, the magnetic energy generated from the upper and lower magnets 12a and 12b is concentrated into the working space 15a through the upper and lower magnetic poles 13a and 13b.

Accordingly, in the working space 15a, microwaves having high frequency energy are generated as the hot electrons and the magnetic energy interact with each other.

The microwaves are moved through the antenna feeder 32 extending outward from the vanes 15 and then reached through the aceramic 31 located at the upper end of the acyl 14a.

Therefore, when the magnetron is used in a microwave oven, the microwave serves to cook or warm food, and when the magnetron is applied to an luminaire, the microwave can excite plasma to generate light.

At this time, the high-frequency energy that is not radiated to the outside of the anode 11 is lost as heat, while the cooling fin 33 and the air cooling fan are installed to dissipate the heat, while the unnecessary high-frequency components leak to the input unit. In order to prevent the filter box 22 to seal the input.

In addition, the filter box 22 is composed of a filter box upper portion 22a and a filter box cover 22b. Therefore, after welding the external connection lead 23b and the choke coil 23a in the filter box 22a, the filter box cover 22b is covered and shielded.

In addition, since the high voltage of 4 KV or more flows through the choke coil 23a inside the filter box 22, the part and the filter through which the high voltage is energized to prevent the high voltage from being energized by the electric flame through the filter box 22. A certain insulating distance must be maintained between the boxes 22.

In more detail, the portion where the high voltage is energized includes a coupling portion of the capacitor 23 and the choke coil 23a, a coupling portion of the external connection lead 23b and the choke coil 23a, an external connection lead 23b, and the like. This part must maintain a predetermined insulation distance from the filter box 22.

In addition, the ceramic stem 21 is provided between the F chamber 14b and the external connection lead 23b to insulate the external connection lead 23b and the F chamber 14b.

Therefore, the external connection lead 23b and the F chamber 14b are insulated by the ceramic stem 21, and the unnecessary high frequency leaked to the input part is reflected by the filter box 22 so as not to leak to the outside. Will not. In addition, the high voltage electricity that is supplied to the input unit is not energized because it is spaced apart from the filter box 22 by an insulating distance.

However, since the filter box is very large in volume because it has to maintain an insulation distance with a portion where high voltage is energized in order to be insulated from the high voltage therein, it is difficult to miniaturize the magnetron.

In addition, since the choke coil and the external connection lead is welded and then the filter box cover is fastened, the manufacturing process is complicated and takes a long time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to improve the structure of the input portion of the magnetron, reduce its volume, and provide an input portion of the magnetron that is easy to manufacture the input portion.

In order to achieve the above object, the present invention provides a high frequency generator for generating high frequency energy by an electromagnetic field, an input unit for applying power to the high frequency generator, and a high frequency for emitting high frequency energy generated by the high frequency generator. A magnetron comprising an output unit, the input unit comprising: a capacitor for supplying power; A choke coil having one side connected to the condenser and the other side directly connected to the high frequency generator; One side is coupled to the outer circumference of the condenser, the other side is coupled to one side of the high frequency generating unit is wrapped around the choke coil and the connecting portion of the choke coil and the condenser microwave generated between the choke coil and the choke coil and the condenser A shielding member for preventing the leakage of water to the outside; Inside the shielding member is installed so as to completely wrap around the choke coil and choke coil and the connecting portion of the condenser and between the choke coil and the high frequency generator, the connecting portion and shielding member of the choke coil and choke coil and the condenser and It provides an input portion of the magnetron, characterized in that it comprises an insulating member for insulating between the high-frequency generating portion to prevent the electric current due to breakdown between.

In addition, the insulating member has a coupling hole formed so that the choke coil can be connected to the inside of the high frequency generator, and the first insulating member is covered with an upper portion of the choke coil, and is slidably connected to an outer circumference of the condenser. And a second insulating member connected to an end portion of the first insulating member.

The shielding member may be slidable with respect to an outer circumference of the second insulating member insulating member.

Hereinafter, an embodiment of an input unit of a magnetron according to the present invention will be described in detail with reference to the accompanying drawings.

In addition, in the following description, the same components as those of the prior art among the main components of the input portion of the magnetron according to the present invention will be referred to the above-described prior art according to FIG. 1, and the detailed description thereof will be omitted.

2 to 3 illustrate one embodiment of the present invention.

The input portion of the magnetron of the present invention is installed to be connected to the lower portion of the F seal 103 provided in the lower portion of the high frequency generator. First, a through type condenser 101 for supplying power is configured, and the choke coil 102 is coupled to an upper end of the through type condenser 101. The choke coil 102 is coupled to the center lead 104 and the side lead 105 of the high frequency generator.

At this time, the center lead 104 and the side lead 105, the choke coil 102 and the condenser 101 are all configured in the same direction so that the ends of the choke coil 102 are directly connected to the center lead 104. And side leads 105 are preferred.

In addition, the filter unit 121 is formed between the filter box 121 and the condenser 101 and the choke coil 102 to form an exterior of the input unit 100 and shield the microwaves from leaking to the outside. Thus, insulating members 111 and 112 are provided to insulate the high voltage generated from the capacitor 101 and the choke coil 102 from the outside.

In more detail, the first insulating member 111 is coupled to the upper portion of the choke coil 102. The first insulating member 111 has an open bottom surface, and has a hole formed therein for coupling the choke coil 102 to the center lead 104 and the side lead 105 at an upper surface thereof. The choke coil 102 is located inside.

In addition, a second insulating member 112 is formed around the outer periphery of the capacitor 101 so as to surround the outside of the capacitor 101 positioned below the choke coil 102.

An inner side of the second insulating member is slidably connected around an outer circumferential surface of the condenser, and an end thereof is connected to an end portion of the first insulating member 111.

At this time, the material of each of the insulating members 111 and 112 is preferably ceramic, but other materials may be used as long as the insulating material is not electrically conductive.

A filter box 121 is formed around the outside of each of the insulating members 111 and 112 to form an appearance of the input unit 100. The filter box 121 is preferably formed of a metal material capable of shielding microwaves, and the inner surface of the filter box 121 is slidably connected to the outer surface of the second insulating member 112. The upper end portion is formed to be coupled to the lower end of the f seal 103 of the high frequency generation portion. In addition, a ground plate 123 extending a predetermined length is formed at an outer circumference of the lower end of the condenser 101 so that the ground plate 123 is connected to the lower end of the filter box 121.

At this time, a protrusion 124 protruding downward is formed on the outer side of the ground plate 123, the lower end of the filter box 121 is bent in the condenser 101 direction, the bent portion is the ground plate Coupling hole 122 is coupled to the protrusion 124 of 123 is formed.

Here, when the filter box 121 and the second insulating member 112 are slid downward, the first insulating member 111 is opened so that the coupling portion of the choke coil 102 and the condenser 101 is opened to the outside. It is preferred that the lower end of the second insulating member 112 is spaced apart from each other. This is to secure a working space to facilitate the work when the choke coil 102 and the condenser 101 are joined by welding.

The coupling method of the input unit of the magnetron of the present invention configured as described above is as follows.

2 is a view showing an open state of the input portion of the magnetron of the present invention. As shown in the figure, the second insulating member 112 and the filter box 121 is located at the lower side of the input unit to open the coupling portion of the choke coil 102 and the condenser 101 to the outside.

Therefore, the operator can easily weld the end of the choke coil 102 and the condenser 101 through the open portion.

When the welding of the choke coil 102 and the condenser 101 is completed, the second insulating member 112 is slid upward to separate the spaced portion between the first insulating member 111 and the condenser 101. To block. In addition, the filter box 121 is slid to shield the input unit 100.

In more detail, as shown in FIG. 3, the second insulating member 112 is slid with respect to the outer periphery of the condenser 101 such that the upper end is connected to the lower end of the first insulating member 111. The other side is connected to the outer circumference of the condenser 101, thereby closing the spaced portion between the first insulating member 111 and the condenser 101.

In addition, the filter box 121 is also sliding with respect to the second insulating member 112, the upper end is coupled to the lower end of the F seal 103 of the high frequency generator, the coupling hole formed in the bent portion of the lower end ( 122 is coupled to the protrusion 124 formed on the ground plate 123 formed along the outer circumference of the condenser 101 to complete the coupling.

The action of the input of the magnetron of the present invention coupled as described above is as follows. Since each of the insulating members 111 and 112 surrounds the capacitor 101 and the choke coil 102, the high-voltage electricity generated by the capacitor 101 and the choke coil 102 is externally provided by the respective insulating members 111 and 112. It is insulated from.

In addition, since the filter box 121 surrounds the input unit, microwaves generated by the high frequency generator and leaked to the input unit are shielded by the filter box 121 so as not to leak to the outside.

In the above-described embodiment, the filter box is formed to be slidable, and an insulating member is provided between the filter box, the choke coil, and the condenser. According to another embodiment of the present invention, the filter box is formed in a conical shape. The volume of the input of the magnetron can be further minimized.

Hereinafter, an input unit of a magnetron according to another embodiment of the present invention will be described with reference to the accompanying drawings. In the configuration of the input portion of the magnetron according to another embodiment of the present invention, the description thereof will be omitted.

As shown in FIG. 4, the input of the magnetron according to another embodiment of the present invention includes a capacitor 201, a choke coil 202, and a first insulating member 211 surrounding the top of the choke coil 202. And a second insulating member 212 connected to an end of the first insulating member 211 and connected to an outer circumference of the capacitor 201 so as to be slidable with the capacitor 201 and the second insulating member 211. It is made of a filter box 221 slidable with respect to the outer periphery of the 212 and constituting the appearance of the input unit 200.

At this time, the upper portion of the portion that is in contact with the second insulating member 212 of the filter box 221 is made of a conical shape so as to converge toward the f seal 203 of the high frequency generator.

As described above, when the filter box 221 is formed in a conical shape, the space occupied by the filter box is reduced.

Hereinafter, other components and operations according to another embodiment of the present invention are the same as the above-described embodiment, and a description thereof will be omitted.

As described above, according to the input portion of the magnetron according to the present invention, since the choke coil through which the high voltage is energized and the filter box forming the exterior with the condenser are formed with an insulating member, the high voltage is energized. It is not necessary to form an insulation distance between the portion and the filter box, there is an effect that can reduce the size of the input unit.                     

In addition, the insulating member and the filter box are formed to be slidable so that the part where the choke coil and the condenser are welded to the input part is in communication with the outside, so that the weld part communicates with the outside when welding the choke coil and the condenser of the magnetron. There is an effect that the operation is made easier to open.

In addition, since the portion corresponding to the external connection lead and the filter box cover in the conventional configuration is not necessary, the configuration of the input unit is simplified, so that assembly is easy and productivity is increased.

In addition, the filter box is formed in a conical shape has an effect that can further reduce the size of the input unit.

Claims (5)

In a magnetron comprising a high frequency generator for generating high frequency energy by an electromagnetic field, an input unit for applying power to the high frequency generator, and a high frequency output unit for emitting high frequency energy generated by the high frequency generator, The input unit includes a capacitor for supplying power; A choke coil having one side connected to the condenser and the other side directly connected to the high frequency generator; One side is coupled to the outer circumference of the condenser, the other side is coupled to one side of the high frequency generating unit is wrapped around the choke coil and the connecting portion of the choke coil and the condenser microwave generated between the choke coil and the choke coil and the condenser A shielding member for preventing the leakage of water to the outside; Inside the shielding member is installed so as to completely wrap around the choke coil and choke coil and the connecting portion of the condenser and between the choke coil and the high frequency generator, the connecting portion and shielding member of the choke coil and choke coil and the condenser and And an insulating member which insulates between the high frequency generators and prevents electric current due to breakdown therebetween. The method of claim 1, wherein the insulating member comprises: a first insulating member formed between the choke coil and the high frequency generating unit by forming a coupling hole so that the choke coil can be connected to the inside of the high frequency generating unit; And a second insulating member having one end connected to the outer periphery of the condenser so as to be slidable and the other end connected to the end of the first insulating member. The input of the magnetron of claim 2, wherein the shielding member is slidable with respect to an outer circumference of the second insulating member. 4. The method of claim 3, wherein when the shielding member and the second insulating member are slid to one side, the end of the first insulating member and the condenser insulating member are separated from each other so that the connecting portion of the choke coil and the condenser is opened to the outside. The input portion of the magnetron, characterized in that the. 5. The input of the magnetron according to claim 4, wherein the shielding member has a conical shape so that the vicinity of the side coupled with the high frequency generator converges toward the high frequency generator.

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