GB1386418A - Heating devices for carrying out high-frequency heating by dielectric losses - Google Patents

Heating devices for carrying out high-frequency heating by dielectric losses

Info

Publication number
GB1386418A
GB1386418A GB1087472A GB1087472A GB1386418A GB 1386418 A GB1386418 A GB 1386418A GB 1087472 A GB1087472 A GB 1087472A GB 1087472 A GB1087472 A GB 1087472A GB 1386418 A GB1386418 A GB 1386418A
Authority
GB
United Kingdom
Prior art keywords
coupler
guide
load circuit
cavity
heating
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
GB1087472A
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1386418A publication Critical patent/GB1386418A/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
    • H05B6/80—Apparatus for specific applications

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

1386418 Microwave heaters THOMSONCSF 8 March 1972 [9 March 1971] 10874/72 Heading H5H In order to minimize the chance of damage to the high frequency source of a heating device Fig. 1, comprising a generator 1 an absorbing load 7 and a 3 dB coupler 3 communicating to a load circuit 11, the radiation is injected into the load circuit from the two parts 4, 5 of the coupler 3 via wave guide sections 9 and 10 which redirect the radiation + and - 45 degrees to the original direction of propagation in the coupler 3. The load circuit 11 Fig. 2 comprises a wave guide with a turning stub 12, a resonant cavity 14 and a further turning stub 15 to tune the cavity. The object to be heated is introduced axially via hole 18. The guide 11 may be circular and the axes of guide sections 9 and 10 enter guide 11 along perpendicular radii. The symmetry of the arrangement reduces the occurrence of spurious reflection. A further embodiment Fig 4 (not shown) has a flared horn, instead of the cavity 14, for treatment of surfaces, e.g. breaking up concrete.
GB1087472A 1971-03-09 1972-03-08 Heating devices for carrying out high-frequency heating by dielectric losses Expired GB1386418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7108089A FR2128935A5 (en) 1971-03-09 1971-03-09

Publications (1)

Publication Number Publication Date
GB1386418A true GB1386418A (en) 1975-03-05

Family

ID=9073191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1087472A Expired GB1386418A (en) 1971-03-09 1972-03-08 Heating devices for carrying out high-frequency heating by dielectric losses

Country Status (4)

Country Link
US (1) US3745292A (en)
DE (1) DE2211147A1 (en)
FR (1) FR2128935A5 (en)
GB (1) GB1386418A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315986A1 (en) * 1975-07-04 1977-01-28 Olivier Jean RESONANT PROCESS AND REACTOR FOR TREATING MATERIAL WITH ELECTROMAGNETIC WAVES
US4336434A (en) * 1980-08-15 1982-06-22 General Electric Company Microwave oven cavity excitation system employing circularly polarized beam steering for uniformity of energy distribution and improved impedance matching
DE3120900A1 (en) * 1981-05-26 1983-06-16 Karl Dr. 7800 Freiburg Fritz Microwave operating space
EP0136453B2 (en) * 1983-08-10 1992-08-26 Snowdrift Corp. N.V. Method and device for the microwave heating of objects
FR2560529B1 (en) * 1984-03-02 1986-11-07 Rhone Poulenc Rech APPARATUS FOR WET CHEMICAL REACTION OF VARIOUS PRODUCTS
FR2560686B1 (en) * 1984-03-05 1986-11-07 Rhone Poulenc Rech MINERALIZATION APPARATUS FOR INDIVIDUAL AUTOMATIC PROCESSING OF SAMPLES OF PRODUCTS PLACED IN CONTAINERS
FR2643829B1 (en) * 1989-03-06 1994-04-01 Prolabo WET CHEMICAL REACTION APPARATUS HAVING A CHIMNEY PROVIDED WITH A MICROWAVE PROPAGATION BARRIER
US5710413A (en) * 1995-03-29 1998-01-20 Minnesota Mining And Manufacturing Company H-field electromagnetic heating system for fusion bonding
US5828040A (en) * 1995-05-31 1998-10-27 The Rubbright Group, Inc. Rectangular microwave heating applicator with hybrid modes
KR100367587B1 (en) 1999-12-29 2003-01-10 엘지전자 주식회사 Coupling structure of waveguide and applicator

Also Published As

Publication number Publication date
FR2128935A5 (en) 1972-10-27
US3745292A (en) 1973-07-10
DE2211147A1 (en) 1972-09-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee