GB2465442B - Radio frequency heating - Google Patents

Radio frequency heating

Info

Publication number
GB2465442B
GB2465442B GB0910363.1A GB0910363A GB2465442B GB 2465442 B GB2465442 B GB 2465442B GB 0910363 A GB0910363 A GB 0910363A GB 2465442 B GB2465442 B GB 2465442B
Authority
GB
United Kingdom
Prior art keywords
product
electrode
auxiliary
polymer
metal electrode
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 - Fee Related
Application number
GB0910363.1A
Other versions
GB0910363D0 (en
GB2465442A (en
Inventor
Robert Melson Perkin
David Ellis
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.)
ADVANCED HEAT ENGINEERING Ltd
Original Assignee
ADVANCED HEAT ENGINEERING 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 ADVANCED HEAT ENGINEERING Ltd filed Critical ADVANCED HEAT ENGINEERING Ltd
Publication of GB0910363D0 publication Critical patent/GB0910363D0/en
Publication of GB2465442A publication Critical patent/GB2465442A/en
Application granted granted Critical
Publication of GB2465442B publication Critical patent/GB2465442B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H05B6/46—Dielectric heating
    • H05B6/62—Apparatus for specific applications
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/005—Preserving by heating
    • A23B4/01—Preserving by heating by irradiation or electric treatment with or without shaping, e.g. in form of powder, granules or flakes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/06—Freezing; Subsequent thawing; Cooling
    • A23B4/066—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes
    • A23B4/068—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes with packages or with shaping in the form of blocks or portions
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/06—Freezing; Subsequent thawing; Cooling
    • A23B4/07—Thawing subsequent to freezing
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/36—Freezing; Subsequent thawing; Cooling
    • A23L3/365—Thawing subsequent to freezing
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
    • A23L5/10—General methods of cooking foods, e.g. by roasting or frying
    • A23L5/15—General methods of cooking foods, e.g. by roasting or frying using wave energy, irradiation, electrical means or magnetic fields, e.g. oven cooking or roasting using radiant dry heat
    • 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
    • H05B6/46—Dielectric heating
    • H05B6/48—Circuits
    • H05B6/50—Circuits for monitoring or control
    • 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
    • H05B6/46—Dielectric heating
    • H05B6/54—Electrodes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

To enable a practical RF oven to heat a wide range of product volumes for different operations such as baking or defrosting, an auxiliary removable box shaped metal electrode 8 is inserted underneath the product 3 to be processed. This electrode has a cross-sectional area comparable to that of the product to be heated and a height which minimizes any air gap above the product, subject to processing requirements. A polymer holder 13 (fig 6) may hold an appropriate number of auxiliary electrodes 8,8' so as to match the area of the product(s)3,3'. A polymer enclosure 5 separates the main electrodes 1,2 from the product chamber. Alternatively the auxiliary metal electrode may be replaced by a dielectric with a large dielectric constant of 100 or greater, for example the auxiliary electrode may comprise a polymer container 19 having modules filed with water 21. Fig 7 not shown discloses the use of ice added to the top of a product to reduce the gap under the electrode 1 and to promote uniform heating.
GB0910363.1A 2008-11-25 2009-06-16 Radio frequency heating Expired - Fee Related GB2465442B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0820960A GB2465542A (en) 2008-11-25 2008-11-25 Use of auxiliary electrodes in RF heating

Publications (3)

Publication Number Publication Date
GB0910363D0 GB0910363D0 (en) 2009-07-29
GB2465442A GB2465442A (en) 2010-05-26
GB2465442B true GB2465442B (en) 2013-12-04

Family

ID=40194720

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0820960A Withdrawn GB2465542A (en) 2008-11-25 2008-11-25 Use of auxiliary electrodes in RF heating
GB0910363.1A Expired - Fee Related GB2465442B (en) 2008-11-25 2009-06-16 Radio frequency heating

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0820960A Withdrawn GB2465542A (en) 2008-11-25 2008-11-25 Use of auxiliary electrodes in RF heating

Country Status (1)

Country Link
GB (2) GB2465542A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3280225B1 (en) 2016-08-05 2020-10-07 NXP USA, Inc. Defrosting apparatus with lumped inductive matching network and methods of operation thereof
EP3280224A1 (en) * 2016-08-05 2018-02-07 NXP USA, Inc. Apparatus and methods for detecting defrosting operation completion
CN106615030A (en) * 2016-10-10 2017-05-10 成都沃特塞恩电子技术有限公司 Thawing cavity with parallel-plate capacitor and radiofrequency thawing device
WO2019047800A1 (en) 2017-09-11 2019-03-14 上海海洋大学 Radio-frequency heating method and radio-frequency heating device
CN107373296A (en) * 2017-09-11 2017-11-24 上海海洋大学 A kind of radio frequency heating apparatus uniformly to thaw
US11160145B2 (en) * 2017-09-29 2021-10-26 Nxp Usa, Inc. Drawer apparatus for radio frequency heating and defrosting
US10917948B2 (en) 2017-11-07 2021-02-09 Nxp Usa, Inc. Apparatus and methods for defrosting operations in an RF heating system
US10771036B2 (en) 2017-11-17 2020-09-08 Nxp Usa, Inc. RF heating system with phase detection for impedance network tuning
US10785834B2 (en) 2017-12-15 2020-09-22 Nxp Usa, Inc. Radio frequency heating and defrosting apparatus with in-cavity shunt capacitor
EP3503679B1 (en) 2017-12-20 2022-07-20 NXP USA, Inc. Defrosting apparatus and methods of operation thereof
CN108371206A (en) * 2018-03-23 2018-08-07 杭州谱乐天成科技有限公司 A kind of thawing apparatus based on high voltage electric field
EP3547801B1 (en) 2018-03-29 2022-06-08 NXP USA, Inc. Defrosting apparatus and methods of operation thereof
US10952289B2 (en) 2018-09-10 2021-03-16 Nxp Usa, Inc. Defrosting apparatus with mass estimation and methods of operation thereof
US11800608B2 (en) 2018-09-14 2023-10-24 Nxp Usa, Inc. Defrosting apparatus with arc detection and methods of operation thereof
CN110906635A (en) * 2018-09-17 2020-03-24 青岛海尔智能技术研发有限公司 Heat exchanger defroster, refrigeration equipment and refrigerator
US11166352B2 (en) 2018-12-19 2021-11-02 Nxp Usa, Inc. Method for performing a defrosting operation using a defrosting apparatus
US11039511B2 (en) 2018-12-21 2021-06-15 Nxp Usa, Inc. Defrosting apparatus with two-factor mass estimation and methods of operation thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891284A (en) * 1954-06-18 1959-06-23 Union Carbide Corp Method for molding objects of non-uniform thickness
GB1167019A (en) * 1965-04-01 1969-10-15 Siemens Ag The Drying of Bodies by Capacitive Heating
JPS4830843U (en) * 1971-08-19 1973-04-14
US4441876A (en) * 1979-05-24 1984-04-10 Michel Marc Flow molding
US4851167A (en) * 1987-09-14 1989-07-25 Clint, Inc. Molding process and apparatus
JP2003332037A (en) * 2002-05-16 2003-11-21 Mitsubishi Electric Corp High frequency dielectric heating device and refrigerating apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891284A (en) * 1954-06-18 1959-06-23 Union Carbide Corp Method for molding objects of non-uniform thickness
GB1167019A (en) * 1965-04-01 1969-10-15 Siemens Ag The Drying of Bodies by Capacitive Heating
JPS4830843U (en) * 1971-08-19 1973-04-14
US4441876A (en) * 1979-05-24 1984-04-10 Michel Marc Flow molding
US4851167A (en) * 1987-09-14 1989-07-25 Clint, Inc. Molding process and apparatus
JP2003332037A (en) * 2002-05-16 2003-11-21 Mitsubishi Electric Corp High frequency dielectric heating device and refrigerating apparatus

Also Published As

Publication number Publication date
GB0820960D0 (en) 2008-12-24
GB0910363D0 (en) 2009-07-29
GB2465542A (en) 2010-05-26
GB2465442A (en) 2010-05-26

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140522 AND 20140528

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160616