CA2355152A1 - Electromagnetic exposure chamber for improved heating - Google Patents

Electromagnetic exposure chamber for improved heating Download PDF

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Publication number
CA2355152A1
CA2355152A1 CA002355152A CA2355152A CA2355152A1 CA 2355152 A1 CA2355152 A1 CA 2355152A1 CA 002355152 A CA002355152 A CA 002355152A CA 2355152 A CA2355152 A CA 2355152A CA 2355152 A1 CA2355152 A1 CA 2355152A1
Authority
CA
Canada
Prior art keywords
dielectric
cavity
electromagnetic field
dielectric slabs
sample material
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.)
Granted
Application number
CA002355152A
Other languages
French (fr)
Other versions
CA2355152C (en
Inventor
William T. Joines
J. Michael Drozd
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.)
Industrial Microwave Systems LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2355152A1 publication Critical patent/CA2355152A1/en
Application granted granted Critical
Publication of CA2355152C publication Critical patent/CA2355152C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H05B6/70—Feed lines
    • H05B6/701—Feed lines using microwave applicators
    • 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
    • H05B6/70—Feed lines
    • H05B6/705—Feed lines using microwave tuning

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Resistance Heating (AREA)

Abstract

The present invention utilizes dielectric slabs to provide a relatively uniform electromagnetic field to a cavity between two or more dielectric slabs. Each dielectric slab is a thickness equal to or nearly equal to a quarter of a wavelength of the electromagnetic field in the dielectric slab. In a particular embodiment, sample material is introduced into the cavity between the two dielectric slabs. This sample material may be introduced through one or more openings in the dielectric slabs. In further embodiments, specialized choke flanges prevent the leakage of energy from this cavity. In a preferred embodiment, an elliptical conducting surface directs the electromagnetic field to a focal region between the two dielectric slabs. Openings to this focal region allow sample material to be passed through this region of focused heating.
CA002355152A 1998-12-16 1998-12-16 Electromagnetic exposure chamber for improved heating Expired - Fee Related CA2355152C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/026215 WO2000036879A1 (en) 1998-12-16 1998-12-16 Electromagnetic exposure chamber for improved heating

Publications (2)

Publication Number Publication Date
CA2355152A1 true CA2355152A1 (en) 2000-06-22
CA2355152C CA2355152C (en) 2008-07-22

Family

ID=22268457

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002355152A Expired - Fee Related CA2355152C (en) 1998-12-16 1998-12-16 Electromagnetic exposure chamber for improved heating

Country Status (7)

Country Link
EP (1) EP1145601B1 (en)
JP (1) JP2002532864A (en)
AT (1) ATE295060T1 (en)
AU (1) AU771172B2 (en)
CA (1) CA2355152C (en)
DE (1) DE69830083T2 (en)
WO (1) WO2000036879A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1809565B1 (en) 2004-11-12 2016-08-03 North Carolina State University Methods and apparatuses for thermal treatment of foods and other biomaterials, and products obtained thereby
GB2468901A (en) * 2009-03-26 2010-09-29 E2V Tech Microwave Oven

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543053A (en) * 1947-12-01 1951-02-27 Int Standard Electric Corp Radiant energy high-temperature heating apparatus
US3843861A (en) * 1971-05-04 1974-10-22 Menschner Textil Johannes Wave guide channel operating with micro-wave energy
DE3769480D1 (en) * 1986-01-16 1991-05-29 Micro Denshi Co Ltd MICROWAVE HEATING DEVICE.
US4999469A (en) * 1990-04-02 1991-03-12 Raytheon Company Apparatus for microwave heating test coupons
US5958275A (en) * 1997-04-29 1999-09-28 Industrial Microwave Systems, Inc. Method and apparatus for electromagnetic exposure of planar or other materials

Also Published As

Publication number Publication date
ATE295060T1 (en) 2005-05-15
DE69830083T2 (en) 2005-10-06
EP1145601A1 (en) 2001-10-17
AU1814199A (en) 2000-07-03
AU771172B2 (en) 2004-03-18
DE69830083D1 (en) 2005-06-09
JP2002532864A (en) 2002-10-02
EP1145601B1 (en) 2005-05-04
CA2355152C (en) 2008-07-22
WO2000036879A1 (en) 2000-06-22

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20151216