KR102247870B1 - Vane for magnetron oscillator - Google Patents

Abstract

The present invention relates to a vane for a magnetron oscillator, and more particularly, to a vane capable of varying the resonant frequency. A vane for a magnetron oscillator according to a preferred embodiment of the present invention includes a plurality of vane cells 100 arranged in an annular shape; A fixing plate 200 which surrounds the plurality of vane cells 100 in an annular shape and fixes the plurality of vane cells 100; And a fixture 210 for adjusting the inner diameter of the fixing plate 200.

Description

Vane for magnetron oscillator {VANE FOR MAGNETRON OSCILLATOR}

The present invention relates to a vane for a magnetron oscillator, and more particularly, to a vane capable of varying the resonant frequency.

The magnetron oscillator converts the electric energy of an electron beam generated in a high vacuum where an electric field and a magnetic field are applied perpendicularly to each other, and radiates it into high-power electromagnetic wave energy. It is a high-efficiency, high-power electromagnetic wave generator. The magnetron oscillator was first devised in the 1930s, and since World War II, it has been researched and developed in earnest mainly in the UK and the US for radar application, and then the industry using the characteristics of information transmission and energy transmission of electromagnetic waves. , Defense, medical, environment, science, energy fields, etc. are used in a variety of ways.

The magnetron oscillator is composed of a cathode generating an electron beam, a resonator having a constant operating frequency, and an output unit having an antenna structure for radiating electromagnetic waves generated from the resonant circuit to the outside. The electron beam generated from the cathode rotates in each direction by Lorentz force due to the electric field caused by the DC voltage applied between the cathode and the anode and the magnetic field applied in the axial direction. At this time, the rotating electron beams resonate at a specific frequency with the resonant circuit, and through this, they are spatially aggregated as shown in the electron beam distribution after the operation shown in FIG. 1 to have an AC component. An electromagnetic wave having an operating frequency is generated in the resonance circuit by the AC component of the electron beam, and the generated electromagnetic wave is radiated to the outside through an output unit composed of an antenna. The frequency of the electromagnetic wave generated by the magnetron oscillator can generate electromagnetic waves from a microwave band to a terahertz wave band depending on the conditions that cause resonance.

[Prior technical literature]

[Patent Literature]

1. Korean Patent Application Publication No. 2019980062076 (Publication date: 1998.11.16, name: magnetron vessel assembly structure)

-Korean Patent Laid-Open Patent No. 1019890010987 (Publication date: 1989.08.11, name: Equal pressure affected part pear doll type magnetron)

An object of the present invention is to provide a vane for a magnetron oscillator capable of varying the resonant frequency.

A vane for a magnetron oscillator according to a preferred embodiment of the present invention includes a plurality of vane cells 100 arranged in an annular shape; A fixing plate 200 which surrounds the plurality of vane cells 100 in an annular shape and fixes the plurality of vane cells 100; And a fixture 210 for adjusting the inner diameter of the fixing plate 200.

Here, the fixing tool 210 is fixedly installed on one side of the fixing plate 200, and the other side of the fixing plate 200 is inserted into the inside of the fixing tool 210 while the fixing plate 200 is bent in an annular shape, and the On the other side of the fixing plate 200, a plurality of fastening holes 201 are formed along the length direction of the fixing plate 200, and an adjustment screw 220 is rotatably fixed to the fixing member 210, and the adjustment screw ( The screw thread 221 of 220 is inserted into the fastening hole 201, and the screw thread 221 pushes or pulls the fastening hole 201 by rotation of the adjusting screw 220, and the fixing plate 200 The inner diameter of the can be adjusted.

In addition, the vane cell 100 includes a floating body 110, and one side of the body 110 has the same center as the outer circumferential surface 2a of the main body at a predetermined thickness on the outer circumferential surface of the main body 110. A first extension part 112 extending along a circle is provided, one side of the main body 110 is formed with a first hole 111 having a semi-cylindrical shape, and the other side of the main body 110 is the main body 110 ) Is provided with a second extension part 113 extending along a circle having the same center as the outer circumferential surface 2a of the main body 110 at a certain thickness inside the outer circumferential surface of the main body 110, and the other side of the main body 110 is a semi-cylindrical A second hole 114 having a shape is formed, a first extension part of a vein adjacent to the outer circumferential surface of the second extension part 113 is mounted, and an inner end 111b of the first hole 111 is 1 may be located inside the outer end 111a of the hole 111, and the inner end 114b of the second hole 114 may be located inside the outer end 114a of the second hole 114 .

The present invention can vary the resonant frequency of the vane by adjusting the force applied from the outside to the inside of the vane.

1 is a view for explaining the operating principle of the magnetron according to the prior art.
2 shows a perspective view of a vane according to the prior art.
3 is a plan view of the vane of FIG. 2 for explaining the principle of operation of the vane according to the prior art.
4 is a perspective view of a vane according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing each drawing, similar reference numerals have been used for similar elements. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Terms such as first and second may be used to describe various constituent elements, but the constituent elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be.

On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

Hereinafter, a vane for a magnetron oscillator according to a preferred embodiment of the present invention will be described with reference to FIGS. 2 to 4. 2 shows a perspective view of a vane according to the prior art. 3 is a plan view of the vane of FIG. 2 for explaining the principle of operation of the vane according to the prior art. 4 is a perspective view of a vane according to an embodiment of the present invention.

First, a general resonance principle of a vane to which the present invention is applied will be described. Referring to Figure 2, the vane may be a hollow cylinder. In addition, a plurality of through holes 20 may be formed between the inner circumferential surface 1 and the outer circumferential surface 2. A plurality of through-holes may be disposed to be spaced apart at the same angle. A through path 30 may be formed between the through hole 20 and the inner space of the inner circumferential surface 1. In FIG. 2, L may be an interval between the through paths.

Referring to FIG. 3, the hot electrons generated on the cathode side move outward from the center of the vane in a cyclone shape. At this time, the wing of the cyclone rotates as shown in FIG. 3. In FIG. 3, reference numeral 20 is hereinafter referred to as a "first through hole". In the first state by rotation, the first through hole is'pole' and the second side is'pole', and the first side is'pole' and the second side is'pole' in the second state (a state in which rotation is in progress). It can be'a pole'.

When the poles of the first side and the second side of the first through hole are interchanged by rotation in this way, an alternating current is generated in the through hole 20 and the through path 30. In addition, the alternating current in the through hole 20 may have a circular shape as shown in FIG. 3. Vane may have a reactance (L) component by a circular current path on the through hole 20. In addition, the through path 30 through which a specific voltage is applied to both ends may have a capacitance (C) component. In this way, the vane may have a capacitance (C) and a reactance (L), thereby having a unique resonance frequency of the vane. In addition, the capacitance of the vane varies depending on the radius of the through-hole, and the reactance of the vane may vary depending on the spacing of the through path. That is, it can be seen that the resonance frequency of the vane can be varied by adjusting the radius of the through hole and the spacing of the through path. In view of this point, the present invention is to provide a vane capable of varying the resonance frequency of the vane by varying the radius of the through hole and the spacing of the through paths as necessary.

Referring to FIG. 4, the vane of the present invention may have a shape in which a plurality of vane cells 100 are arranged in an annular shape. Each of the plurality of vane cells 100 may be fixed to the fixing plate 200 by a fixing screw 230. An annular vessel shape may be formed by arranging each of the plurality of vessels 100 on the fixing plate 200 at a preset position and fixing them with a fixing screw 230 and then fixing the fixing plate 200 in an annular shape. The fixture 210 may be fixedly installed on one side of the fixing plate 200 (hereinafter, referred to as “fixing plate first side”). The other side of the fixing plate 200 (hereinafter, referred to as “fixing plate second side”) may be inserted into the inside of the fastener 210 while the fixing plate 200 is bent in an annular shape. A plurality of fastening holes 201 may be formed on the second side of the fixing plate 200 along the longitudinal direction of the fixing plate 200. An adjustment screw 220 may be rotatably fixed to the fixture 210. The thread 221 of the adjustment screw 220 may be inserted into the fastening hole 201. The inner diameter of the fixing plate 200 may be adjusted while the screw thread 221 pushes or pulls the fastening hole 201 by the rotation of the adjustment screw 220.

The vane cell 100 may include a body 110 of a floating body shape. One side of the main body 110 may be provided with a first extension part 112 extending from the outer circumferential surface 2a of the main body 110 along a circle having the same center as the outer circumferential surface of the main body 110 at a predetermined thickness. One side of the body 110 may have a first hole 111 having a semi-cylindrical shape. The other side of the main body 110 may be provided with a second extension part 113 extending along a circle having the same center as the outer circumferential surface of the main body 110 at a predetermined thickness inside the outer circumferential surface of the main body 110. The other side of the main body 110 may have a semi-cylindrical second hole 114 formed therein. A first extension part of a bain adjacent to the outer circumferential surface of the second extension part 113 may be mounted. The inner end 111b of the first hole 111 may be located inside the outer end 111a of the first hole 111, and the inner end 114b of the second hole 114 is a second hole ( 114) may be located on the inside of the outer end (114a). Accordingly, when the neighboring vane cells are engaged and fastened by the first and second extension parts, the through path 30a can be secured. In addition, when adjacent vane cells are engaged and fastened by the first and second extension portions, a cylindrical through hole 20a may be formed by a semi-cylindrical hole facing each other.

In the above structure, when the adjustment screw 220 rotates in the first direction, the other side of the fixing plate 200 may advance toward the upper side based on FIG. 4. As a result, the inner diameter of the annular fixing plate 200 is reduced, so that the vessel can be tightened. In this case, the inner diameter of the through hole 20a is reduced, and the distance of the through path 30a may be narrowed. In addition, when the adjustment screw 220 rotates in the second direction, the other side of the fixing plate 200 may advance toward the lower side based on FIG. 4. Thereby, by increasing the inner diameter of the annular fixing plate 200, the tightening of the vessel may be weakened. In this case, the inner diameter of the through hole 20a may be increased, and the distance of the through passage 30a may be increased. In this way, the reactance by the through hole 20a and the capacitance by the through path 30a can be adjusted.

20a: through hole
30a: through passage
100: Vane cell
110: the body
111: first semi-cylinder
112: first protrusion
113: second protrusion
114: second semi-cylinder
200: fixed plate
201: fastening hole
210: fixture
220: adjusting screw
221: thread
230: fixing screw

Claims (3)

A plurality of vain cells 100 arranged in an annular shape;
A fixing plate 200 which surrounds the plurality of vane cells 100 in an annular shape and fixes the plurality of vane cells 100; And
Including a fixture 210 for adjusting the inner diameter of the fixing plate 200,
The vane cell 100 includes a floating body 110,
One side of the main body 110 is provided with a first extension part 112 extending along a circle having the same center as the outer circumferential surface 2a of the main body at a predetermined thickness from the outer circumferential surface of the main body 110,
One side of the body 110 is formed with a first hole 111 of a semi-cylindrical shape,
The other side of the main body 110 is provided with a second extension part 113 extending along a circle having the same center as the outer circumferential surface 2a of the main body 110 at a constant thickness inside the outer circumferential surface of the main body 110 Become,
The other side of the main body 110 is formed with a second hole 114 of a semi-cylindrical shape,
A first extension part of a bain adjacent to the outer circumferential surface of the second extension part 113 is mounted,
The inner end 111b of the first hole 111 is located inside the outer end 111a of the first hole 111,
Vein for a magnetron oscillator, characterized in that the inner end (114b) of the second hole (114) is located inside the outer end (114a) of the second hole (114).
The method of claim 1,
The fixture 210 is fixedly installed on one side of the fixing plate 200,
The other side of the fixing plate 200 is inserted into the inside of the fixing tool 210 while the fixing plate 200 is bent in an annular shape,
A plurality of fastening holes 201 are formed along the length direction of the fixing plate 200 on the other side of the fixing plate 200,
An adjustment screw 220 is rotatably fixed to the fixture 210,
The screw thread 221 of the adjustment screw 220 is inserted into the fastening hole 201,
Vein for a magnetron oscillator, characterized in that the inner diameter of the fixing plate 200 is adjusted while the screw thread 221 pushes or pulls the fastening hole 201 by the rotation of the adjustment screw 220.
delete

Images