WO2013084497A1

WO2013084497A1 - Magnetron and microwave-using equipment

Info

Publication number: WO2013084497A1
Application number: PCT/JP2012/007827
Authority: WO
Inventors: 半田　貴典; 桑原　なぎさ
Original assignee: パナソニック株式会社
Priority date: 2011-12-06
Filing date: 2012-12-06
Publication date: 2013-06-13
Also published as: EP2790204B1; EP2790204A4; JP6171162B2; JP2013120628A; CN103975412A; EP2790204A1; CN103975412B

Abstract

This magnetron (1) is provided with: a positive electrode cylindrical body (112) having a high-frequency output unit (111); a permanent magnet (122) provided to both ends of the positive electrode cylindrical body; and a magnetic yoke (121) for housing the positive electrode cylindrical body and the permanent magnet in the interior. A plurality of cut-and-raised portions (1213) are provided on the high-frequency output side of the magnetic yoke, and a metal plate (125) that fits with the high-frequency output unit and the cut-and-raised portions is installed between the permanent magnet and the magnetic yoke, whereby the positive electrode cylindrical body and the magnetic yoke are immobilized relative to each other. It is thereby possible to securely immobilize the high-frequency output unit of a magnetron relative to a wave guide part of a magnetic yoke, microwave-using equipment, or the like without complicating the structure and the assembly method.

Description

Magnetron and microwave equipment

The present invention relates to a magnetron suitable for use in a microwave oscillation device such as a microwave utilizing device.

The magnetron has a vacuum tube portion having an anode cylinder in which a plurality of vanes are radially arranged on the inner wall surface, an input section having a cathode structure disposed on a central axis of the anode cylinder, and a high-frequency output section; It is roughly divided into an exterior part having a permanent magnet, a magnetic yoke constituting a magnetic circuit, and a cooling part.

There are various methods for positioning the vacuum tube portion and the exterior portion. For example, in the magnetron disclosed in Patent Document 1, as shown in FIG. 10, an annular shape protruding from the inner surface of the first magnetic yoke 3 on the high frequency output side As shown in FIG. 9, the positioning plate 4 is provided with a rib 31 and has an outer diameter that just fits into the inner diameter of the annular rib 31 and an inner diameter that just fits into the outer diameter of the high-frequency output portion. 1 is sandwiched between the magnetic yoke 3 and the permanent magnet 122, the positioning plate 4 is fitted to the annular rib 31 and the high-frequency output unit 111, and the vacuum tube portion and the exterior portion are fixed relative to each other via the positioning plate 4.

Further, in Patent Document 1, as shown in FIG. 9, the cooling unit has a spiral fin structure, and the positioning plate has a baffle plate 41 so as to obstruct the ineffective air path of the cooling air.

Japanese Unexamined Patent Publication No. 59-81834

However, in the conventional configuration described above, since the rib is provided on the yoke, there is a limit to the height of the rib to be protruded, and assembly is possible even when the positioning plate 4 is not aligned with the annular rib 31.

Further, in the structure having the baffle plate 41 on the positioning plate 4, directionality can be achieved at the time of assembly, so that the assembly becomes complicated and the possibility of riding on the annular rib 31 increases.

Furthermore, the rib provided in the yoke has only a function of fixing the relative position of the vacuum tube portion and the exterior portion via the positioning plate 4 and is not considered for positioning to the waveguide portion of a microwave utilizing device or the like. .

For this reason, the relative position between the waveguide and the magnetron varies only with a general mounting screw, which may cause a discharge between the high-frequency output and the waveguide. .

The present invention has been made in view of such circumstances, and does not complicate the structure and assembling method, and the high-frequency output portion of the magnetron is reliably fixed in relative position with the waveguide portion of a magnetic yoke, a microwave utilizing device, or the like. It aims at providing the magnetron which can be performed.

In order to solve the above conventional problems, a magnetron according to the present invention includes an anode cylinder having a high-frequency output portion, permanent magnets provided at both ends of the anode cylinder, the anode cylinder and the permanent magnet inside. A magnetic yoke housed in the magnetic yoke, and a plurality of cuts and raised portions are provided on the high frequency output side of the magnetic yoke, and a metal plate suitable for the cut and raised portion is provided between the permanent magnet and the magnetic yoke. The anode cylinder and the magnetic yoke are fixed at relative positions.

This makes it possible to reliably fix the relative position of the high-frequency output part of the magnetron with the waveguide part such as a magnetic yoke and a microwave application device without complicating the structure and assembly method.

In the magnetron, the waveguide portion of the microwave utilizing device to which the magnetron is attached is provided with a cut-and-raise suitable for the hole generated by the cut-and-raise of the magnetic yoke, and the cut-and-raise of the waveguide portion is the hole of the magnetic yoke. The magnetic yoke and the waveguide are fixed relative to each other.

Further, in the magnetron, a projection adapted to a hole generated by cutting and raising the magnetic yoke is provided in a waveguide portion of a microwave utilizing device to which the magnetron is attached, and the projection of the waveguide portion is a hole of the magnetic yoke. The magnetic yoke and the waveguide are fixed relative to each other.

Further, in the magnetron, a hole suitable for cutting and raising the magnetic yoke is provided in a waveguide portion of a microwave using device to which the magnetron is attached, and the cutting and raising of the magnetic yoke is inserted into the hole of the waveguide portion. The magnetic yoke and the waveguide are fixed relative to each other.

According to this configuration, the height of the cut-and-raised can be freely set, and the displacement of the positioning metal plate can be suppressed.

By providing a plurality of cut-and-raised parts, the positioning metal plate can have a simple structure that does not need to have directionality, and is easy to assemble.

The cut / raised portion provided on the magnetic yoke or the cut / raised portion or projection provided on the waveguide portion of the microwave device fits into the hole provided on the waveguide portion or the magnetic yoke cut / raised portion. Since the relative position of the magnetic yoke and the waveguide section is fixed, the relative position of the high frequency output section and the waveguide section is fixed, and the discharge between the high frequency output section and the waveguide section can be suppressed.

The magnetron of the present invention includes an anode cylinder having a high-frequency output portion, permanent magnets provided at both ends of the anode cylinder, and a magnetic yoke that accommodates the anode cylinder and the permanent magnet therein. A plurality of holes are provided on the high frequency output side of the magnetic yoke, a metal plate adapted to the high frequency output portion and the hole is disposed between the permanent magnet and the magnetic yoke, and is positioned in the hole. The anode cylinder and the magnetic yoke are fixed relative to each other.

In the magnetron, a hole adapted to the hole of the magnetic yoke is provided in a waveguide portion of a microwave utilizing device to which the magnetron is attached, and the magnetic yoke and the waveguide portion are relatively positioned by the positioning rod-shaped body. It is fixed.

¡According to this configuration, the positioning rod can be freely set, and the deviation between the metal plate and the magnetic yoke can be suppressed.

By arranging the rods for positioning in a plurality of holes, the metal plate can have a simple structure that does not need to have directionality and is easy to assemble.

The positioning rod-shaped body fixes the relative position of the metal plate, magnetic yoke, and waveguide part, so that the relative position between the high-frequency output part and the waveguide part is fixed, and the discharge between the high-frequency output part and the waveguide part is suppressed. can do.

¡By applying the above magnetron to microwave equipment, more stable and higher performance can be achieved.

According to the magnetron and the microwave utilization device according to the present invention, the relative position of the magnetron high-frequency output portion and the waveguide portion of the magnetic yoke and the microwave utilization device can be reliably fixed without complicating the structure and the assembling method. In addition, it is possible to suppress the discharge between the high-frequency output unit and the waveguide unit and reliably guide the radio wave.

The front view of the magnetron in the 1st Embodiment of this invention The perspective view of the magnetic yoke and metal plate of the magnetron in the 1st Embodiment of this invention The half sectional view of the magnetron with a waveguide part in a 1st embodiment of the present invention The perspective view of the magnetic yoke of the magnetron in the 2nd Embodiment of this invention Half sectional view of a magnetron with a waveguide in the second embodiment of the present invention The front view of the magnetron in the 3rd Embodiment of this invention The perspective view of the rod-shaped body of the magnetron in the 3rd Embodiment of this invention Half sectional view of a magnetron with a waveguide in the third embodiment of the present invention Front view of conventional magnetron Perspective view of conventional magnetron magnetic yoke and positioning plate

1st invention is equipped with the anode cylinder which has a high frequency output part, the permanent magnet provided in the both ends of the said anode cylinder, and the magnetic yoke which accommodates the said anode cylinder and the said permanent magnet inside, A plurality of cut-and-raised portions are provided on the high-frequency output side of the magnetic yoke, a metal plate suitable for the high-frequency output portion and the cut-and-raised portion is disposed between the permanent magnet and the magnetic yoke, By fixing the relative position of the magnetic yoke, the structure and assembling method are not complicated, and the high-frequency output part of the magnetron can be reliably fixed to the relative position of the magnetic yoke and the waveguide part of the microwave application device, and simple. Assembly can be facilitated with a simple structure.

According to a second aspect of the present invention, in the first aspect of the present invention, in the first aspect of the invention, the waveguide portion of the microwave device to which the magnetron is attached is provided with a cut-and-raise adapted to the hole generated by the cut-and-raise of the magnetic yoke, Is cut into the hole of the magnetic yoke, and the magnetic yoke and the waveguide portion are fixed in relative positions, thereby suppressing variations in the relative positions of the high-frequency output portion and the waveguide portion, It is possible to suppress discharge between the high frequency output section and the waveguide section.

In a third aspect of the invention, in particular, in the first aspect of the invention, a projection adapted to a hole generated by cutting and raising the magnetic yoke is provided in a waveguide portion of a microwave utilizing device to which a magnetron is attached. A protrusion fits into the hole of the magnetic yoke, and the magnetic yoke and the waveguide are fixed in relative positions, thereby suppressing variations in the relative positions of the high-frequency output unit and the waveguide unit, and the high-frequency output. The discharge between the part and the waveguide part can be suppressed.

According to a fourth aspect of the present invention, in the first aspect of the present invention, in the first aspect of the invention, a hole suitable for cutting and raising the magnetic yoke is provided in a waveguide portion of a microwave utilizing device to which the magnetron is attached. By fitting into the hole of the waveguide part and fixing the relative position of the magnetic yoke and the waveguide part, variation in the relative position of the high-frequency output part and the waveguide part is suppressed, and the high-frequency output part and the Discharge between the waveguide portions can be suppressed.

5th invention is equipped with the anode cylinder which has a high frequency output part, the permanent magnet provided in the both ends of the said anode cylinder, and the magnetic yoke which accommodates the said anode cylinder and the said permanent magnet inside, A plurality of holes are provided on the high-frequency output side of the magnetic yoke, a metal plate adapted to the high-frequency output portion and the hole is disposed between the permanent magnet and the magnetic yoke, and a positioning rod-like shape in the hole By arranging the body and securely fixing the relative position of the anode cylinder and the magnetic yoke, the structure and the assembling method are not complicated, and the high-frequency output part of the magnetron is connected to the magnetic yoke and the microwave using device. The relative position can be reliably fixed to the waveguide section, and the assembly can be facilitated with a simple structure.

In a sixth aspect of the invention, in particular, in the fifth aspect of the invention, a hole adapted to the hole of the magnetic yoke is provided in a waveguide portion of a microwave utilizing device to which a magnetron is attached. By fixing the relative position of the yoke and the waveguide section, it is possible to suppress variations in the relative positions of the high-frequency output section and the waveguide section, and to suppress discharge between the high-frequency output section and the waveguide section. .

According to the seventh aspect of the present invention, the magnetron according to any one of the first to sixth aspects of the present invention is provided in a microwave utilization device, so that more stable and higher performance can be achieved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(First embodiment)
FIG. 1 is a front view of a magnetron according to the first embodiment of the present invention, and FIG. 2 is a perspective view of a magnetic yoke and a metal plate of the magnetron according to the first embodiment of the present invention.

In FIG. 1, a magnetron 1 includes a vacuum tube portion 11 having an anode cylinder 112, an input part (not shown) and a high frequency output part 111, a permanent magnet 122, a magnetic yoke 121 constituting a magnetic circuit, and a plurality of sheets. The exterior part 12 includes a cooling part 123 composed of cooling fins and a filter part 124 for supplying power to the input part.

The magnetic yoke 121 is composed of a first magnetic yoke 1211 on the high frequency output side and a second magnetic yoke 1212 on the filter side, and is connected by caulking.

The metal plate 125 has a thickness of about 30% of the magnetic yoke 121, is disposed between the permanent magnet 122 and the first magnetic yoke 1211, holds the gasket 126, and from the high-frequency output unit 111. Prevent leakage of output radio waves.

Here, as shown in FIG. 2, the first magnetic yoke 1211 is radially and symmetrically 4 times the thickness of the magnetic yoke 121 so as not to have directionality toward the inner surface of the magnetic yoke. The cut-and-raised portion 1213 is provided in a portion that becomes an ineffective air passage for the cooling air so that the metal plate 125 having an outer diameter substantially equal to the inscribed circle formed by the end face of the cut-and-raised 1213 fits in just. It is configured.

The inner diameter of the metal plate 125 is substantially equal to the outer diameter of the high frequency output unit 111 of the vacuum tube portion 11 and is configured to fit into the high frequency output unit 111.

Thereby, in the vacuum tube portion 11, the inner diameter portion of the metal plate 125 fits into the high-frequency output portion 111, and the outer diameter portion fits into an inscribed circle formed by the end face of the first magnetic yoke 1211 cut and raised. Thus, the first magnetic yoke 1211 and the metal plate 125 are positioned relative to each other.

Further, the first magnetic yoke 1211 has a hole 1214 generated by cutting and raising 1213.

FIG. 3 shows a half cross-sectional view of the magnetron with a waveguide section in the first embodiment of the present invention.

In FIG. 3, the waveguide portion 2 is connected to the magnetron 1 at a position where the magnetic yoke 121 is placed outside the waveguide portion 2 at a position where the first magnetic yoke 1211 is cut and raised by the hole 1214. Four cut-and-raised portions 21 having about twice the thickness are provided. The cut-and-raised portion 21 of the waveguide portion 2 is fitted in a part of the hole 1214 created by the cut-and-raised portion 1213 of the first magnetic yoke 1211.

Thereby, the magnetron 1 and the waveguide 2 are relatively positioned, and the first magnetic yoke 1211 and the waveguide 2 are fixed by screws.

The operation of the magnetron configured as described above will be described below.

First, since the metal plate 125 is disk-shaped, there is no directionality and the assembly is simple. Since the metal plate 125 has a cut and raised sufficiently high with respect to the thickness of the metal plate 125, the metal plate 125 does not ride on the cut and raised 1213.

Since the vacuum tube portion 11 of the magnetron 1 is positioned relative to the first magnetic yoke 1211 via the metal plate 125, variations during assembly can be suppressed, and deviation from vibration and impact can also be suppressed.

In addition, since the magnetron 1 is positioned and fixed relative to the waveguide section 2, the displacement of the high-frequency output section 111 with respect to the waveguide section 2 can be significantly suppressed, and the discharge between the high-frequency output section 111 and the waveguide section 2 is suppressed. In addition, it is possible to reliably guide radio waves.

Furthermore, since the cut-and-raised 1213 is provided in a portion that becomes an invalid air passage for the cooling air, it also functions as a baffle plate and can efficiently apply the cooling air to the cooling fins.

Further, a part of the cooling air hitting the cut and raised 1213 flows into the hole 1214 generated by the cut and raised 1213, and flows into the waveguide part through the hole 22 generated by the cut and raised part 21 of the waveguide part 2. It can be expected that convection is generated in the part and that the discharge between the high-frequency output part 111 and the waveguide part 2 is further suppressed.

It should be noted that the number of cuts and raises is preferably an even number and symmetrical arrangement so as not to give directionality. However, the number, size, and position of the cuts and rises if the structure allows relative positioning between the metal plate and the waveguide. , Any shape, direction and angle.

It should be noted that the metal plate positioning cut and raised and the waveguide portion positioning cut and raised may be provided separately.

The shape of the metal plate is preferably a simple structure with no directivity, but may be any shape as long as it can be positioned relative to the yoke.

(Second Embodiment)
FIG. 4 is a perspective view of a magnetic yoke of a magnetron according to the second embodiment of the present invention, and FIG. 5 is a half sectional view of the magnetron with a waveguide according to the same embodiment.

In FIG. 4, the first magnetic yoke 1215 has four first cuts that are three times the thickness of the magnetic yoke, radially and symmetrically so as not to have directionality toward the inner surface of the magnetic yoke. The raised portion 1216 is provided in a portion that becomes an ineffective air passage for the cooling air so that the metal plate 125 having an outer diameter substantially equal to the inscribed circle formed by the end face of the first cut and raised portion 1216 is fitted into the raised portion. It is configured.

The first magnetic yoke 1215 is provided with two second raised portions 1217 in a radial and symmetrical manner in the direction of the outer surface of the magnetic yoke so as not to have directionality and about twice the thickness of the magnetic yoke. ing.

Also, the first magnetic yoke 1215 has a hole 1214 generated by the first cut and raised 1216.

The structure of the magnetron other than the first magnetic yoke 1215 is the same as that of the first embodiment.

As a result, the vacuum tube portion 11 has an inscribed circle in which the inner diameter portion of the metal plate 125 fits into the high-frequency output portion 111 and the outer diameter portion is constituted by the end face of the first cut and raised portion 1216 of the first magnetic yoke 1215. By being engaged, the first magnetic yoke 1215 and the metal plate 125 are positioned relative to each other.

In FIG. 5, the waveguide portion 2 is provided with a first hole 23 at a position where the second cut and raised portion 1217 of the first magnetic yoke 1215 fits in the attachment portion of the magnetron 1.

Further, in the waveguide unit 2, a second hole 24 is provided at the same position as the hole 1214 generated by the first cut and raised 1216 of the first magnetic yoke 1215 in the attachment part of the magnetron 1. The second cut and raised portion 1217 of the first magnetic yoke 1215 is fitted in the first hole 23 provided in the waveguide section 2.

Thereby, the magnetron 1 and the waveguide portion 2 are relatively positioned, and the first magnetic yoke 1215 and the waveguide portion 2 are fixed by screws.

First, since the metal plate 125 is disk-shaped, there is no directionality and the assembly is simple.

Since the metal plate 125 has a cut and raised sufficiently high with respect to the thickness of the metal plate 125, the metal plate 125 does not ride on the first cut and raised 1216.

Since the vacuum tube portion 11 of the magnetron 1 is positioned relative to the first magnetic yoke 1215 via the metal plate 125, variations during assembly can be suppressed, and deviation from vibration and impact can also be suppressed.

Furthermore, since the first cut and raised 1216 is provided in a portion that becomes an ineffective air passage for the cooling air, it also functions as a baffle plate and can efficiently apply the cooling air to the cooling fins.

In addition, a part of the cooling air hitting the first cut and raised 1216 flows into the hole 1214 generated by the first cut and raised 1216, and flows into the waveguide part through the second hole 24 of the waveguide part 2. It can be expected that convection is generated in the waveguide section, and that the discharge between the high-frequency output section 111 and the waveguide section 2 is further suppressed.

In addition, it is preferable to provide the holes of the waveguide part other than the positioning holes for convection, but any number, position, and shape of the holes may be used as long as they can be positioned relative to the magnetron.

(Third embodiment)
FIG. 6 is a front view of a magnetron according to the third embodiment of the present invention, and FIG. 7 is a perspective view of a rod-shaped body of the magnetron according to the third embodiment of the present invention.

In FIG. 6, the first magnetic yoke 1218 has four holes in almost the same position as the outer diameter of the metal plate 125 in a radial and symmetrical portion that becomes an ineffective air passage for cooling air so as not to have directionality. 1219 is provided.

The rod-shaped body 127 is arranged in the four holes 1219 of the first magnetic yoke 1218 so as to protrude to the same extent in the inner surface direction and the outer surface direction.

Here, as shown in FIG. 7, the rod-like body 127 has a semi-cylindrical shape having a length about five times the thickness of the magnetic yoke, and is press-fitted into the hole 1219 of the first magnetic yoke 1218. It has a structure.

Moreover, the rod-shaped body 127 is made of aluminum.

The metal plate 125 is positioned relative to the first magnetic yoke 1218 by fitting into an inscribed circle formed by the arcs of the four rod-shaped bodies 127.

The structure of the magnetron other than the first magnetic yoke 1218 and the rod-shaped body 127 is the same as that of the first embodiment.

As a result, the vacuum tube portion 11 has an inscribed circle formed of an arc of a rod-like body 127 in which the inner diameter portion of the metal plate 125 is fitted into the high frequency output portion 111 and the outer diameter portion is press-fitted into the first magnetic yoke 1218. By being engaged, the first magnetic yoke 1218 and the metal plate 125 are positioned relative to each other.

FIG. 8 shows a half cross-sectional view of a magnetron with a waveguide in the third embodiment of the present invention.

In FIG. 8, the waveguide 2 is provided with a hole 25 at a position where the rod-shaped body 127 press-fitted into the first magnetic yoke 1218 fits into the attachment portion of the magnetron 1. The rod-shaped body 127 is fitted in the hole 25 provided in the waveguide section 2.

Thereby, the magnetron 1 and the waveguide portion 2 are relatively positioned, and the first magnetic yoke 1218 and the waveguide portion 2 are fixed by screws.

First, since the metal plate 125 is disk-shaped, there is no directionality and the assembly is simple. Since the rod-shaped body 127 has a sufficient height with respect to the thickness of the metal plate 125, the metal plate 125 does not ride on the rod-shaped body 127.

Since the rod-shaped body 127 is non-magnetic, it can suppress magnetic loss. Since the vacuum tube portion 11 of the magnetron 1 is positioned relative to the first magnetic yoke 1218 via the metal plate 125 and the rod-shaped body 127, variations during assembly can be suppressed, and deviation from vibration and impact can be prevented. Can be suppressed.

Furthermore, since the rod-shaped body 127 protrudes from a portion that becomes an ineffective air path of the cooling air, it also functions as a shield and can efficiently apply the cooling air to the cooling fins.

Further, since the rod-shaped body 127 has a semi-cylindrical shape, a part of the cooling air hitting the rod-shaped body 127 flows into the gap between the hole 1219 and the rod-shaped body 127, and the hole 25 of the waveguide section 2 and the rod-shaped body 127. Since it flows into the waveguide part through this gap, convection can occur in the waveguide part, and it can be expected that the discharge between the high-frequency output part 111 and the waveguide part 2 is further suppressed.

The number of rod-shaped bodies is preferably an even number and symmetrically arranged so as not to have directionality. However, the number, size, and position of the rod-shaped bodies can be used as long as the structures can be positioned relative to the metal plate and the waveguide. , Shape and direction can be anything.

Further, the rod-shaped body may not be press-fitted as long as it can be positioned relative to the metal plate and the waveguide.

Also, the shape of the metal plate is preferably a simple structure that does not have directionality, but may be any structure as long as it can be positioned relative to the yoke.

In addition, the material of the rod-like body is preferably a non-magnetic material in order to suppress magnetic loss, but any material can be used as long as it can be positioned relative to the metal plate and the waveguide.

Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.

This application is based on a Japanese patent application filed on December 6, 2011 (Japanese Patent Application No. 2011-266565), the contents of which are incorporated herein by reference.

As described above, according to the magnetron and the microwave utilizing device according to the present invention, the structure and the assembling method are not complicated, and the high frequency output portion of the magnetron is securely connected to the waveguide portion of the magnetic yoke and the microwave utilizing device or the like. The relative position can be fixed, the discharge between the high-frequency output portion and the waveguide portion can be suppressed, and the radio wave can be guided reliably, so that the present invention can be applied to a microwave utilizing device such as a microwave oven.

DESCRIPTION OF SYMBOLS 1 Magnetron 11 Vacuum tube part 111 High frequency output part 112 Anode cylinder 12 Exterior part 121 Magnetic yoke 1211 1st magnetic yoke 1212 2nd magnetic yoke 1213 Cut and raise 1214 Hole 1215 1st magnetic yoke 1216 1st Cut and raised 1217 Second cut and raised 1218 First magnetic yoke 1219 Hole 122 Permanent magnet 123 Cooling portion 124 Filter portion 125 Metal plate 126 Gasket 127 Rod-shaped body 2 Waveguide portion 21 Cut and raised 22 Hole 23 First hole 24 First 2 holes 25 holes 3 1st magnetic yoke 31 annular rib 4 positioning plate 41 baffle plate

Claims

An anode cylinder having a high-frequency output unit, permanent magnets provided at both ends of the anode cylinder, and a magnetic yoke that accommodates the anode cylinder and the permanent magnet therein,
A plurality of cut-and-raised portions are provided on the high-frequency output side of the magnetic yoke, a metal plate suitable for the high-frequency output portion and the cut-and-raised portion is disposed between the permanent magnet and the magnetic yoke, A magnetron having a relative position fixed to the magnetic yoke.
In the waveguide portion of the microwave utilizing device to which the magnetron is attached, a cut and raised suitable for the hole generated by cutting and raising the magnetic yoke is provided, and the cut and raised of the waveguide portion is fitted into the hole of the magnetic yoke, The magnetron according to claim 1, wherein the relative position of the magnetic yoke and the waveguide is fixed.
Protrusion adapted to the hole generated by cutting and raising the magnetic yoke is provided in the waveguide portion of the microwave utilizing device to which the magnetron is attached, and the protrusion of the waveguide portion is fitted into the hole of the magnetic yoke. The magnetron according to claim 1, wherein a relative position is fixed between the yoke and the waveguide section.
Provided in the waveguide portion of the microwave application device to which the magnetron is attached, a hole suitable for the cut and raised of the magnetic yoke, the cut and raised of the magnetic yoke fit into the hole of the waveguide portion, and the magnetic yoke and The magnetron according to claim 1, wherein the waveguide portion is fixed at a relative position.
An anode cylinder having a high-frequency output unit, permanent magnets provided at both ends of the anode cylinder, and a magnetic yoke that accommodates the anode cylinder and the permanent magnet therein,
A plurality of holes are provided on the high-frequency output side of the magnetic yoke, a metal plate adapted to the high-frequency output portion and the hole is disposed between the permanent magnet and the magnetic yoke, and a positioning rod-like shape in the hole The magnetron which arrange | positioned the body and fixed the relative position of the said anode cylinder and the said magnetic yoke.
2. A waveguide suitable for a magnetic yoke is provided in a waveguide portion of a microwave utilizing device to which a magnetron is attached, and the magnetic yoke and the waveguide portion are fixed relative to each other by the positioning rod-shaped body. 5. The magnetron according to 5.
A microwave using device comprising the magnetron according to any one of claims 1 to 6.