GB1159279A - Improvements relating to R.F. Heating Apparatus - Google Patents

Improvements relating to R.F. Heating Apparatus

Info

Publication number
GB1159279A
GB1159279A GB369267A GB369267A GB1159279A GB 1159279 A GB1159279 A GB 1159279A GB 369267 A GB369267 A GB 369267A GB 369267 A GB369267 A GB 369267A GB 1159279 A GB1159279 A GB 1159279A
Authority
GB
United Kingdom
Prior art keywords
heating apparatus
resonators
jan
incident
resonator
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.)
Expired
Application number
GB369267A
Inventor
Roger John Meredith
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB369267A priority Critical patent/GB1159279A/en
Publication of GB1159279A publication Critical patent/GB1159279A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

1,159,279. Automatic tuning. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 16 Jan., 1968 [25 Jan., 1967], No. 3692/67. Heading H3A. In a microwave heating apparatus, the resonator or resonators 16, 17 forming the application is maintained in tune with the generator 15 by comparing the phase of the incident and reflected energy to derive an error signal which retunes the resonators. The incident and reflected signals are coupled to a detector 31 by four-part couplers 19, 30 or in the case of a single resonator by one three-part coupler (41), Fig. 5 (not shown). By adjusting phase shifter 33 the detector output may be arranged to vary about a datum level V R , and this may be backed off in amplifier 34 to give an error control signal for motor 24 which varies about zero. The motor adjusts tuning screws 22, 23 in the cavities.
GB369267A 1967-01-25 1967-01-25 Improvements relating to R.F. Heating Apparatus Expired GB1159279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB369267A GB1159279A (en) 1967-01-25 1967-01-25 Improvements relating to R.F. Heating Apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB369267A GB1159279A (en) 1967-01-25 1967-01-25 Improvements relating to R.F. Heating Apparatus

Publications (1)

Publication Number Publication Date
GB1159279A true GB1159279A (en) 1969-07-23

Family

ID=9763156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB369267A Expired GB1159279A (en) 1967-01-25 1967-01-25 Improvements relating to R.F. Heating Apparatus

Country Status (1)

Country Link
GB (1) GB1159279A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010663A1 (en) * 1978-10-26 1980-05-14 Paul Troester Maschinenfabrik Apparatus for heating rubber products utilizing U.H.F. energy
FR2487623A1 (en) * 1980-07-23 1982-01-29 Electricite De France Coupling and frequency variator for microwave fusion furnace - uses sensors to provide data to correct power and frequency of cavity oscillator by changes of mechanical position
FR2500708A1 (en) * 1981-02-20 1982-08-27 Hyperelec Microwave heater with automatic matching of frequencies - uses microwave reflection detector to adjust generator frequency or cavity dimensions to maintain optimum matching
GB2126098A (en) * 1982-08-13 1984-03-21 Metronex Engineering Pty Ltd Diathermy apparatus
FR2552613A1 (en) * 1983-09-28 1985-03-29 Thourel Leo Microwave heating device
GB2197145A (en) * 1986-10-02 1988-05-11 Gh Ind Sa Resonant converter control arrangement
GB2276051A (en) * 1993-03-09 1994-09-14 Filtronics Components Automatic tuned filters
WO2002009134A3 (en) * 2000-07-21 2002-04-25 Knn Systemtechnik Gmbh Method and device for generating electromagnetic fields having high field intensity and field homogeneity
US20180160487A1 (en) * 2016-12-01 2018-06-07 Spot Labs, Llc System and method for electromagnetic oven heating energy control using active and passive elements

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010663A1 (en) * 1978-10-26 1980-05-14 Paul Troester Maschinenfabrik Apparatus for heating rubber products utilizing U.H.F. energy
FR2487623A1 (en) * 1980-07-23 1982-01-29 Electricite De France Coupling and frequency variator for microwave fusion furnace - uses sensors to provide data to correct power and frequency of cavity oscillator by changes of mechanical position
FR2500708A1 (en) * 1981-02-20 1982-08-27 Hyperelec Microwave heater with automatic matching of frequencies - uses microwave reflection detector to adjust generator frequency or cavity dimensions to maintain optimum matching
GB2126098A (en) * 1982-08-13 1984-03-21 Metronex Engineering Pty Ltd Diathermy apparatus
FR2552613A1 (en) * 1983-09-28 1985-03-29 Thourel Leo Microwave heating device
GB2197145A (en) * 1986-10-02 1988-05-11 Gh Ind Sa Resonant converter control arrangement
GB2197145B (en) * 1986-10-02 1991-05-29 Gh Ind Sa A generator for the production of high frequency current
GB2276051A (en) * 1993-03-09 1994-09-14 Filtronics Components Automatic tuned filters
WO2002009134A3 (en) * 2000-07-21 2002-04-25 Knn Systemtechnik Gmbh Method and device for generating electromagnetic fields having high field intensity and field homogeneity
US20180160487A1 (en) * 2016-12-01 2018-06-07 Spot Labs, Llc System and method for electromagnetic oven heating energy control using active and passive elements
US11197354B2 (en) * 2016-12-01 2021-12-07 Spot Labs, Llc System and method for electromagnetic oven heating energy control using active and passive elements

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees