FR2223931A1 - Tunnel oven for continuous HF treatment - is used for powdery or doughy materials transported through oven on conveyor - Google Patents

Tunnel oven for continuous HF treatment - is used for powdery or doughy materials transported through oven on conveyor

Info

Publication number
FR2223931A1
FR2223931A1 FR7311702A FR7311702A FR2223931A1 FR 2223931 A1 FR2223931 A1 FR 2223931A1 FR 7311702 A FR7311702 A FR 7311702A FR 7311702 A FR7311702 A FR 7311702A FR 2223931 A1 FR2223931 A1 FR 2223931A1
Authority
FR
France
Prior art keywords
oven
conveyor
powdery
continuous
treatment
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
FR7311702A
Other languages
French (fr)
Other versions
FR2223931B3 (en
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.)
MHM ELECTRONIC
Original Assignee
MHM ELECTRONIC
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 MHM ELECTRONIC filed Critical MHM ELECTRONIC
Priority to FR7311702A priority Critical patent/FR2223931A1/en
Publication of FR2223931A1 publication Critical patent/FR2223931A1/en
Application granted granted Critical
Publication of FR2223931B3 publication Critical patent/FR2223931B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
    • 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
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)

Abstract

The oven heats the material by dielectric losses and employs high frequency current. The oven has waveguide attenuating channels at its inlet and outlet, through which the material on the conveyor passes, and which are connected to the protective shielding enclosing the high frequency generators. The length of each channel is between three and five times its diameter. The channels are preferably at an angle to the electric field set up by the high frequency generators.
FR7311702A 1973-03-30 1973-03-30 Tunnel oven for continuous HF treatment - is used for powdery or doughy materials transported through oven on conveyor Granted FR2223931A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7311702A FR2223931A1 (en) 1973-03-30 1973-03-30 Tunnel oven for continuous HF treatment - is used for powdery or doughy materials transported through oven on conveyor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7311702A FR2223931A1 (en) 1973-03-30 1973-03-30 Tunnel oven for continuous HF treatment - is used for powdery or doughy materials transported through oven on conveyor

Publications (2)

Publication Number Publication Date
FR2223931A1 true FR2223931A1 (en) 1974-10-25
FR2223931B3 FR2223931B3 (en) 1975-10-24

Family

ID=9117217

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7311702A Granted FR2223931A1 (en) 1973-03-30 1973-03-30 Tunnel oven for continuous HF treatment - is used for powdery or doughy materials transported through oven on conveyor

Country Status (1)

Country Link
FR (1) FR2223931A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013690A1 (en) * 1997-09-08 1999-03-18 Amana Company, L.P. A microwave oven having an orthogonal electromagnetic seal
WO2001004558A1 (en) * 1999-07-07 2001-01-18 Corning Incorporated Apparatus and method for continuous microwave drying of ceramics

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013690A1 (en) * 1997-09-08 1999-03-18 Amana Company, L.P. A microwave oven having an orthogonal electromagnetic seal
GB2332846A (en) * 1997-09-08 1999-06-30 Amana Company L P A microwave oven having an orthogonal electromagnetic seal
US5958278A (en) * 1997-09-08 1999-09-28 Amana Company, L.P. Microwave oven having an orthogonal electromagnetic seal
GB2332846B (en) * 1997-09-08 2001-12-12 Amana Company L P A microwave oven having an orthogonal electromagnetic seal
WO2001004558A1 (en) * 1999-07-07 2001-01-18 Corning Incorporated Apparatus and method for continuous microwave drying of ceramics
US6455826B1 (en) 1999-07-07 2002-09-24 Corning Incorporated Apparatus and method for continuous microwave drying of ceramics

Also Published As

Publication number Publication date
FR2223931B3 (en) 1975-10-24

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