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WO2019009173A1 - Magnétron et dispositif de chauffage par micro-ondes équipé de celui-ci - Google Patents

Magnétron et dispositif de chauffage par micro-ondes équipé de celui-ci Download PDF

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Publication number
WO2019009173A1
WO2019009173A1 PCT/JP2018/024536 JP2018024536W WO2019009173A1 WO 2019009173 A1 WO2019009173 A1 WO 2019009173A1 JP 2018024536 W JP2018024536 W JP 2018024536W WO 2019009173 A1 WO2019009173 A1 WO 2019009173A1
Authority
WO
WIPO (PCT)
Prior art keywords
yoke
magnetron
frame
shaped
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/024536
Other languages
English (en)
Japanese (ja)
Inventor
石井　健
克彦 金田
雄一 水野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to CN201880041041.1A priority Critical patent/CN110770873B/zh
Priority to JP2019527658A priority patent/JP7008185B2/ja
Priority to EP18828642.1A priority patent/EP3651179A4/fr
Publication of WO2019009173A1 publication Critical patent/WO2019009173A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/10—Magnet systems for directing or deflecting the discharge along a desired path, e.g. a spiral path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/12—Vessels; Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F2003/103—Magnetic circuits with permanent magnets

Definitions

  • the present disclosure relates to a magnetron that is difficult to disassemble and a microwave heating apparatus provided with the magnetron.
  • the structure of the magnetron which is a microwave generator, is classified from the functional aspect, it is composed of a magnetic circuit unit, a cooling circuit unit, an LC filter circuit unit, and a core tube.
  • the core tube is composed of a top shell portion having an antenna portion, an anode portion, and a cathode portion.
  • the magnetron converts direct current energy applied between the anode part and the cathode part into high frequency energy through electronic motion in the working space between the anode and the cathode where the orthogonal electrostatic magnetic field is formed, and microwaves It is an electron tube that occurs.
  • a magnetron is widely used as a microwave generator for a microwave heating apparatus such as an microwave oven, since the oscillation efficiency is relatively high and the output can be easily increased (for example, see Patent Document 1).
  • FIG. 6 is a perspective view of a conventional magnetron.
  • FIG. 7 is a cross-sectional view of a core tube of a conventional magnetron.
  • FIG. 8 is a cross-sectional view of the exterior component excluding the core tube of the conventional magnetron.
  • the core tube 19 of a general magnetron is formed by vacuum sealing.
  • a coiled filament 1 is disposed at the center of the cathode of the magnetron.
  • the filament 1 is supported by the center lead 4 and the side leads 5.
  • the center lead 4 is connected to the side lead 5 via an end hat 2 and an end hat 3 provided at both ends of the filament 1.
  • the anode part of the magnetron comprises an anode cylinder 6 and an even number of vanes 7 provided so as to project from the inner peripheral surface of the anode cylinder 6 toward the filament 1.
  • the vanes 7 are provided to keep a predetermined distance from the filament 1.
  • a cavity resonator 8 is formed between the vane 7 and the inner peripheral wall surface of the anode cylinder 6.
  • a pair of bowl-shaped magnetic pole portions 9 and 10 having substantially the same shape are disposed to face each other.
  • the input unit 12 is provided outside the end in the tube axis direction of the magnetic pole unit 9 and supplies the heating power and the high voltage for driving the magnetron to the filament 1.
  • the output portion 11 is provided outside the end portion of the magnetic pole portion 10 in the tube axis direction, and radiates the microwave generated in the anode portion.
  • the output unit 11 and the input unit 12 constitute a core tube 19 covered with a vacuum wall.
  • the frame-shaped yokes 15, 16 are made of a ferromagnetic material and are combined in a rectangular shape in cross section.
  • the filament 1 is heated and electrons are emitted from the filament 1 toward the vane 7 by applying a predetermined high DC voltage between the filament 1 and the vane 7.
  • the electrons are subjected to the action of orthogonal electromagnetic fields in the electron motion space 17 between the filament 1 and the vane 7.
  • the electrons orbit around the filament 1 and travel to the vane 7.
  • the electrons interact with the weak microwaves of the 2,450 MHz band generated in the cavity resonator 8 in the divided vane 7 to generate large microwaves in the cavity resonator 8. .
  • the microwaves generated in the cavity resonator 8 are transmitted by the antenna lead 18 electrically coupled to one of the vanes 7 and radiated into the heating chamber of the microwave oven through the output section 11.
  • parts other than the core tube 19 can be used semipermanently. Therefore, disassembly of the magnetron and replacement of the core tube 19 can be performed by a simple operation such as removal of the screw 21. Therefore, the magnetron may be used in a manner beyond the manufacturer's warranty, such as replacing the part with a non-genuine part. This causes unstable operation and shortens the life.
  • the present disclosure aims to provide a reliable magnetron which can not be disassembled unless parts are destroyed.
  • the magnetron of the present embodiment has a magnetic circuit composed of a permanent magnet and a yoke formed by joining a first yoke and a second yoke.
  • the first yoke and the second yoke are joined by plastic deformation of the joint portion integrally provided on at least one of the first yoke and the second yoke.
  • FIG. 1 is a perspective view of a magnetron according to the first embodiment of the present disclosure.
  • FIG. 2 is a cross-sectional view of the exterior component excluding the core tube of the magnetron in accordance with the first embodiment.
  • FIG. 3 is a partially enlarged view of the magnetron according to the first embodiment before bending the claws of the input side frame-shaped yoke.
  • FIG. 4A is a partially enlarged view of the magnetron according to Embodiment 1, viewed from the outside, in which the claws of the input side frame-like yoke are bent.
  • FIG. 4B is a partially enlarged view of the magnetron according to Embodiment 1, viewed from the inside when the claws of the input side frame-shaped yoke are bent.
  • FIG. 1 is a perspective view of a magnetron according to the first embodiment of the present disclosure.
  • FIG. 2 is a cross-sectional view of the exterior component excluding the core tube of the magnetron in accordance with
  • FIG. 5 is a partially enlarged view of a yoke of a magnetron according to a second embodiment of the present disclosure.
  • FIG. 6 is a perspective view of a conventional magnetron.
  • FIG. 7 is a cross-sectional view of a core tube of a conventional magnetron.
  • FIG. 8 is a cross-sectional view of the exterior component excluding the core tube of the conventional magnetron.
  • the magnetron of the first aspect of the present disclosure has a magnetic circuit composed of a permanent magnet and a yoke formed by joining a first yoke and a second yoke.
  • the first yoke and the second yoke are joined by plastic deformation of the joint portion integrally provided on at least one of the first yoke and the second yoke.
  • the first yoke and the second yoke are joined by caulking.
  • the first yoke has a claw that is a joint.
  • the second yoke has a hole.
  • the claws are bent by caulking, and the claws engage with the holes.
  • the first yoke has a claw that is a joint.
  • the pawl has an engagement protrusion.
  • the second yoke has a hole and an engaging portion provided in the hole. The claw portion is bent by caulking, and the engagement protrusion engages with the engagement portion.
  • a fifth aspect of the present disclosure is a microwave heating apparatus provided with the magnetron of the first aspect.
  • FIG. 1 is a perspective view of a magnetron according to the first embodiment of the present disclosure.
  • FIG. 2 is a cross-sectional view of the exterior component excluding the core tube of the magnetron according to the present embodiment.
  • FIG. 3 is a partially enlarged view of the magnetron according to the present embodiment before the claws of the input side frame-like yoke are bent.
  • FIG. 4A is a partially enlarged view of the magnetron according to the present embodiment, as viewed from the outside, in which the claws of the input side frame-shaped yoke are bent.
  • FIG. 4B is a partially enlarged view of the magnetron according to the present embodiment, as viewed from the inside, in which the claws of the input side frame-shaped yoke are bent.
  • the frame-shaped yoke 15 is arrange
  • the frame-shaped yokes 16 are arranged such that the cross section has an inverted U-shape.
  • the frame-shaped yoke 15 and the frame-shaped yoke 16 are arranged such that their ends overlap. In this state, by combining the frame-shaped yoke 15 and the frame-shaped yoke 16, a cylindrical frame-shaped yoke having a rectangular cross section is formed. In the present embodiment, the frame-shaped yokes 15 and 16 correspond to the first yoke and the second yoke, respectively.
  • a notch 151 is formed substantially at the center between the two ends of the frame-shaped yoke 15.
  • a projecting claw portion 201 is integrally formed with the frame-shaped yoke 15.
  • a hook-like engagement protrusion 202 is formed at the tip of the claw portion 201.
  • the claw portion 201 corresponds to a joint portion.
  • a hole 161 is formed substantially at the center of the two end portions of the frame-shaped yoke 16. As shown in FIGS. 4A and 4B, the hole portion 161 is provided to face the claw portion 201 of the frame-shaped yoke 15. Since the engaging portion 162 is formed in the hole 161, the hole 161 has a substantially L shape.
  • an annular permanent magnet 13 is placed at the inner central portion of the frame-shaped yoke 15 so as to surround the hole formed in the frame-shaped yoke 15.
  • the input side of the assembled core tube 19 is inserted into the annular permanent magnet 13 and the frame-shaped yoke 15.
  • the output side of the core tube 19 is inserted into the annular permanent magnet 14 and the frame-like yoke 16.
  • the claw portion 201 is bent by caulking at about 90 ° in the direction of the hole portion 161 and engaged with the peripheral portion of the hole portion 161.
  • the bending angle of the claw portion 201 is approximately 90 degrees. If the bending angle is 90 ° or more, the frame-shaped yokes 15, 16 are engaged reliably.
  • the frame-like joint is formed by plastic deformation (caulking) of the claw portion 201 (joint portion) integrally provided on at least one of the frame-like yoke 15 and the frame-like yoke 16.
  • the iron 15 and the frame-shaped yoke 16 are joined.
  • a hook-like engagement protrusion 202 is formed at the tip of the claw portion 201.
  • the engagement protrusion 202 has a so-called L shape.
  • the claw portion 201 may have a T shape.
  • two engaging portions 162 may be formed in the hole portion 161.
  • a rivet is hit on the overlapping portion of the frame-shaped yokes 15 and 16 to fix the frame-shaped yoke 15 and the frame-shaped yoke 16.
  • the present invention is not limited to this.
  • the frame-shaped yoke 15 and the frame-shaped yoke 16 may be fixed by a tapping screw.
  • the magnetron As described above, according to the present embodiment, it is possible to prevent the magnetron from being used by a method out of the manufacturer's guarantee, such as replacing the part with a non-genuine part. Thereby, unstable operation can be suppressed and shortening of the life can be prevented. As a result, it is possible to provide a reliable magnetron which can not be disassembled unless parts are destroyed.
  • Embodiment 2 of the present disclosure will be described.
  • the same or corresponding portions as in the first embodiment will be denoted by the same reference numerals, and overlapping descriptions will be omitted.
  • FIG. 5 is a partially enlarged view of the yoke of the magnetron according to the present embodiment.
  • the present embodiment is the same as the first embodiment in that the claws 203 are bent and engaged with the holes 163. However, the present embodiment is different from the first embodiment in the following points.
  • the engaging projection 202 is not provided in the claw portion 203, and the engaging portion 162 is not provided in the hole portion 163.
  • the claws 203 be bent by 90 ° or more and fixed.
  • the magnetron As described above, according to the present embodiment, it is possible to prevent the magnetron from being used by a method out of the manufacturer's guarantee, such as replacing the part with a non-genuine part. Thereby, unstable operation can be suppressed and shortening of the life can be prevented. As a result, it is possible to provide a reliable magnetron which can not be disassembled unless parts are destroyed.
  • the present disclosure is applicable to a magnetron.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microwave Tubes (AREA)

Abstract

Un magnétron selon un mode de réalisation de la présente invention comprend un circuit magnétique configuré à partir d'un aimant permanent (13, 14) et une culasse configurée en joignant ensemble une première culasse (15) et une seconde culasse (16). La première culasse (15) et la seconde culasse (16) sont reliées l'une à l'autre au moyen d'une déformation plastique d'une partie de jonction (201) avec laquelle la première culasse (15) et/ou la seconde culasse (16) est réalisée d'un seul tenant. Selon le présent mode de réalisation, le magnétron peut être empêché d'être utilisé par un procédé à l'extérieur de la portée de garantie par le fabricant, comme le remplacement d'un composant par un composant non authentique. De cette manière, des opérations instables peuvent être supprimées et une diminution de la durée de vie peut être empêchée. Par conséquent, il est possible de fournir un magnétron hautement fiable qui ne peut pas être démonté sans destruction de composants.
PCT/JP2018/024536 2017-07-06 2018-06-28 Magnétron et dispositif de chauffage par micro-ondes équipé de celui-ci Ceased WO2019009173A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201880041041.1A CN110770873B (zh) 2017-07-06 2018-06-28 磁控管和具备该磁控管的微波加热装置
JP2019527658A JP7008185B2 (ja) 2017-07-06 2018-06-28 マグネトロンとこれを備えたマイクロ波加熱装置
EP18828642.1A EP3651179A4 (fr) 2017-07-06 2018-06-28 Magnétron et dispositif de chauffage par micro-ondes équipé de celui-ci

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-132824 2017-07-06
JP2017132824 2017-07-06

Publications (1)

Publication Number Publication Date
WO2019009173A1 true WO2019009173A1 (fr) 2019-01-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/024536 Ceased WO2019009173A1 (fr) 2017-07-06 2018-06-28 Magnétron et dispositif de chauffage par micro-ondes équipé de celui-ci

Country Status (4)

Country Link
EP (1) EP3651179A4 (fr)
JP (1) JP7008185B2 (fr)
CN (1) CN110770873B (fr)
WO (1) WO2019009173A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020131862A1 (fr) 2018-12-17 2020-06-25 The Broad Institute, Inc. Systèmes de transposases associés à crispr et procédés d'utilisation correspondants

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62176947U (fr) * 1986-01-16 1987-11-10
JPH03238735A (ja) * 1990-02-15 1991-10-24 Matsushita Electron Corp マグネトロン用継鉄の組立方法および同継鉄の組立用具

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60156655U (ja) * 1984-03-29 1985-10-18 株式会社東芝 マグネトロン
JPS61110937A (ja) * 1984-11-06 1986-05-29 Matsushita Electronics Corp マグネトロン装置
JPH03119634A (ja) * 1989-10-02 1991-05-22 Hitachi Ltd マグネトロン
KR940006922Y1 (ko) * 1991-12-14 1994-10-06 주식회사 금성사 마그네트론의 요크 결합장치
KR200165763Y1 (ko) * 1997-02-17 2000-01-15 윤종용 마그네트론의 하부 요오크구조
KR20010011415A (ko) * 1999-07-28 2001-02-15 윤종용 전자렌지용 마그네트론

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62176947U (fr) * 1986-01-16 1987-11-10
JPH03238735A (ja) * 1990-02-15 1991-10-24 Matsushita Electron Corp マグネトロン用継鉄の組立方法および同継鉄の組立用具

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3651179A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020131862A1 (fr) 2018-12-17 2020-06-25 The Broad Institute, Inc. Systèmes de transposases associés à crispr et procédés d'utilisation correspondants

Also Published As

Publication number Publication date
CN110770873A (zh) 2020-02-07
CN110770873B (zh) 2022-09-20
EP3651179A1 (fr) 2020-05-13
JPWO2019009173A1 (ja) 2020-05-21
JP7008185B2 (ja) 2022-01-25
EP3651179A4 (fr) 2020-07-15

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