EP0037643A1 - Mikrowellenkochherde - Google Patents

Mikrowellenkochherde Download PDF

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Publication number
EP0037643A1
EP0037643A1 EP81301037A EP81301037A EP0037643A1 EP 0037643 A1 EP0037643 A1 EP 0037643A1 EP 81301037 A EP81301037 A EP 81301037A EP 81301037 A EP81301037 A EP 81301037A EP 0037643 A1 EP0037643 A1 EP 0037643A1
Authority
EP
European Patent Office
Prior art keywords
microwave
branches
common portion
oven
energy
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.)
Withdrawn
Application number
EP81301037A
Other languages
English (en)
French (fr)
Inventor
Alan Edward Russ
Robert David Smith
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.)
Thorn EMI Domestic Appliances Ltd
Original Assignee
Thorn EMI Domestic Appliances 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 Thorn EMI Domestic Appliances Ltd filed Critical Thorn EMI Domestic Appliances Ltd
Publication of EP0037643A1 publication Critical patent/EP0037643A1/de
Withdrawn legal-status Critical Current

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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
    • H05B6/74—Mode transformers or mode stirrers
    • H05B6/745—Rotatable stirrers
    • 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
    • H05B6/707—Feed lines using waveguides
    • 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

Definitions

  • This invention relates to microwave cookers. It is known to provide a double oven cooker in the same built in framework in which one of the ovens is a microwave oven and the other a conventional oven. It is further known to provide heating elements in a microwave oven in order to provide a so-called browning facility when using microwave energy. The browning facility produces more thorough cook of the outer regions of the food.
  • heating elements which are utilised with the microwave energy to provide the browning facility, can be used alone for conventional cooking, i.e. primarily by convection, within the oven.
  • the known arrangements referred to lack a certain operational flexibility and it is an object of the present invention to provide an improved microwave cooker which offers _wider utilisation possibilities than has been the case hitherto.
  • a microwave cooker comprising two adjacent ovens, a mode stirrer disposed in each oven, a source of microwave energy and a wave guide accomodating said source and having respective branches which connect with the ovens so as to guide microwave energy towards the corresponding mode stirrer, characterised in that the wave guide includes deflector means for directing microwave energy exclusively along one or other of the branches and that one of the ovens includes a heating element enabling said one oven to be heated by said element and/or microwave energy directed thereto.
  • the ovens are disposed one above the other and the wave guide is located with the branches thereof respectively opening through the rear walls of the ovens.
  • a microwave cooker generally indicated by the reference 1 includes two adjacent ovens 3 and 5 disposed one above the other and each formed with closure doors (not shown) in respective front walls 7 and 9 thereof.
  • Motor driven mode stirrer devices 11 and 13 of known form are mounted in the top walls of the ovens 3 and 5 and each serves, during microwave operation of the associated oven, to rotate the standing wave pattern of microwaves around the oven cavity to prevent cold spots being established in food being cooked.
  • Wave guide conduit means are provided at the rear of the ovens and include a horizontally disposed supply conduit 17 leading to vertically extending branches 19 and 21 which at their ends remote from the supply conduit 17 open respectively into the ovens 3 and 5. Adjacent the corresponding ovens, the branches 19 and 21 include side wall deflector elements 23 and 25 which when microwave energy passes through the corresponding branch each serve to reflect that energy on to the associated mode stirrer device 11 or 13.
  • a source 27 (such as a magnetron) of microwave energy which directs a stream of microwaves towards a deflector means, in this example a flap 29 .
  • the flap is pivotally mounted at pivot 31 for rotation about a horizontal pivotal axis.
  • the flap is rotated by an appropriate drive means so that it can occupy either of the positions shown in Figures 1b and 1c and illustrated by the broken lines in Figure 1a.
  • the deflector totally seals the branch 21 from the flow of microwave energy therethrough.
  • the alternative positions of the flap 29 are disposed at 45° to the axis of the supply conduit 17 whilst the deflector elements 23 and 25 are respectively disposed at 45 to the axes of the branches 19 and 21.
  • microwave energy emitted in a horizontal beam from the source 27 is deflected by the flap 29 and deflector element 25 to provide a horizontal beam of microwave energy directed towards the mode stirrer 13.
  • the flap 29 and deflector element 23 deliver the beam from the source 27 as a horizontal beam directed towards stirrer 11.
  • the oven 5 is provided with heating elements (not shown) to allow that the oven to be used either without microwave energy as a conventional oven or with microwave energy to provide microwave cooking with a browning facility.
  • Suitable interlock circuitry is provided to ensure, on the one hand, that microwave energy from the source is not transmitted unless the flap 29 is in one or other of the positions illustrated in the drawings of Figure 1 and on the other hand to ensure that microwave energy is not transmitted when the flap 29 is in one of its alternative positions unless the door of the oven to which the microwave energy would be deflected is closed.
  • the two branches 19 and 21, and the supply conduit 17 are linked by a common housing having a generally rectangular construction shown at 3 0 in the perspective and plan sectional views of Figure 2a and 2b respectively.
  • the housing has a cylindrical bore 31 which accomodates a cylindrical deflector block 34, mounted for rotation about a vertical axis X of the housing.
  • Drive means (not shown in the drawings) are also provided for effecting rotation of the block 34.
  • the branches are connected to the housing at opposite side faces 35, 36 thereof and communicate with the bore 31 via coaxially extending ducts 35' and 36'.
  • the supply conduit 17, is connected to a remaining side face 37 of the block and communicates with the bore via a further duct 37', orthogonally inclined to ducts 35' and 36'.
  • the ducts 35', 36' and 37' lie in a common plane and the block 34 has a generally arcuate passageway 38 for selectively connecting the supply conduit exclusively to one or other of the branches.
  • microwave energy is directed from the supply conduit along the branch 19.
  • the supply conduit may be coupled exclusively to the other branch 21.
  • the arrangement of the housing and the deflector block is also illustrated in the perspective sectional view of Figure 2c.
  • each branch 19, 21 is -provided with a slidable shutter 19a and 21a which is guided within respective slots 19b and 21b.
  • Each shutter may be selectively located so as to close of the associated branch so that energy is directed exclusively to the other branch.
  • oven microwave cooker construction described provides great flexibility as regards cooking possibilities.
  • oven 5 can be employed purely for conventional cooking by utilising the heating elements which are provided therein.
  • the heating element provided in oven 5 can be used to brown food items cooked therein by microwave, or alternatively oven 5 can be used solely for conventional cooking whilst oven 3 is being used for microwave cooking.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)
EP81301037A 1980-03-26 1981-03-12 Mikrowellenkochherde Withdrawn EP0037643A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8010160 1980-03-26
GB8010160 1980-03-26

Publications (1)

Publication Number Publication Date
EP0037643A1 true EP0037643A1 (de) 1981-10-14

Family

ID=10512396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301037A Withdrawn EP0037643A1 (de) 1980-03-26 1981-03-12 Mikrowellenkochherde

Country Status (2)

Country Link
EP (1) EP0037643A1 (de)
JP (1) JPS56146931A (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162727A (en) * 1984-06-19 1986-02-05 Shell Electric Mfg Microwave oven
FR2646746A1 (fr) * 1989-05-03 1990-11-09 Lataillade Maurice Dispositif d'utilisation combinee d'un generateur micro-ondes, dans les usages simultanes ou alternatifs, alimentaire et/ou sanitaire, par guide d'ondes a deux voies alternatives
US5010220A (en) * 1988-02-16 1991-04-23 Alcan International Limited Process and apparatus for heating bodies at high temperature and pressure utilizing microwave energy
FR2689220A1 (fr) * 1992-03-24 1993-10-01 Desmet Frederic Refrigérateur à absorption utilisant les micro-ondes comme mode de chauffage et associé à d'autres systèmes de chauffage micro-ondes.
GB2284133A (en) * 1993-11-15 1995-05-24 Toshiba Kk High-frequency heater and method of controlling same
US5468940A (en) * 1993-11-13 1995-11-21 Goldstar Co., Ltd. Microwave oven for simultaneously cooking two dishes of food
WO1998041802A1 (en) * 1997-03-20 1998-09-24 Sun Microsystems, Inc. Sorption refrigeration appliance
US5992168A (en) * 1995-09-20 1999-11-30 Sun Microsystems, Inc. Circuit board having an integral sorber
US6006543A (en) * 1995-09-20 1999-12-28 Sun Microsystems, Inc. Absorbent pair refrigerant system
US6038883A (en) * 1995-09-20 2000-03-21 Sun Microsystems, Inc. Electromagnetic wave-activated sorption refrigeration system
US6044661A (en) * 1995-09-20 2000-04-04 Sun Microsystems, Inc. Coaxial waveguide applicator for an electromagnetic wave-activated sorption system
US6244056B1 (en) 1995-09-20 2001-06-12 Sun Microsystems, Inc. Controlled production of ammonia and other gases
US7003979B1 (en) 2000-03-13 2006-02-28 Sun Microsystems, Inc. Method and apparatus for making a sorber
CN1330917C (zh) * 2005-08-12 2007-08-08 成都市武侯区金字塔设计室 带微波炉的电冰箱
WO2011108016A1 (en) 2010-03-03 2011-09-09 Sauro Bianchelli Innovative domestic appliance with dual function
ITAN20100111A1 (it) * 2010-07-02 2012-01-03 Sauro Bianchelli Innovativo elettrodomestico con duplice funzione

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2538457Y2 (ja) * 1990-08-20 1997-06-18 三洋電機株式会社 高周波加熱装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1254316A (fr) * 1960-04-15 1961-02-17 Miwag Mikrowellen A G Dispositif pour la préparation de mets à l'aide d'un chauffage par ondes très courtes
DE1145730B (de) * 1961-09-26 1963-03-21 Siemens Elektrogeraete Gmbh HF-Strahlungsherd mit pulsmaessiger Erwaermung
US3430023A (en) * 1967-09-11 1969-02-25 Roper Corp Geo D Door construction and ventilating system for microwave oven
US3810248A (en) * 1970-10-19 1974-05-07 Husqvarna Vapenfabriks Ab Microwave heating apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1254316A (fr) * 1960-04-15 1961-02-17 Miwag Mikrowellen A G Dispositif pour la préparation de mets à l'aide d'un chauffage par ondes très courtes
DE1145730B (de) * 1961-09-26 1963-03-21 Siemens Elektrogeraete Gmbh HF-Strahlungsherd mit pulsmaessiger Erwaermung
US3430023A (en) * 1967-09-11 1969-02-25 Roper Corp Geo D Door construction and ventilating system for microwave oven
US3810248A (en) * 1970-10-19 1974-05-07 Husqvarna Vapenfabriks Ab Microwave heating apparatus

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162727A (en) * 1984-06-19 1986-02-05 Shell Electric Mfg Microwave oven
US5010220A (en) * 1988-02-16 1991-04-23 Alcan International Limited Process and apparatus for heating bodies at high temperature and pressure utilizing microwave energy
FR2646746A1 (fr) * 1989-05-03 1990-11-09 Lataillade Maurice Dispositif d'utilisation combinee d'un generateur micro-ondes, dans les usages simultanes ou alternatifs, alimentaire et/ou sanitaire, par guide d'ondes a deux voies alternatives
FR2689220A1 (fr) * 1992-03-24 1993-10-01 Desmet Frederic Refrigérateur à absorption utilisant les micro-ondes comme mode de chauffage et associé à d'autres systèmes de chauffage micro-ondes.
US5468940A (en) * 1993-11-13 1995-11-21 Goldstar Co., Ltd. Microwave oven for simultaneously cooking two dishes of food
GB2284133A (en) * 1993-11-15 1995-05-24 Toshiba Kk High-frequency heater and method of controlling same
GB2284133B (en) * 1993-11-15 1998-03-04 Toshiba Kk High-frequency heater and method of controlling same
US6276159B1 (en) * 1995-09-20 2001-08-21 Sun Microsystems, Inc. Sorption refrigeration appliance
US6125650A (en) * 1995-09-20 2000-10-03 Sun Microsystems, Inc. Sorber having a cooling mechanism
US6006543A (en) * 1995-09-20 1999-12-28 Sun Microsystems, Inc. Absorbent pair refrigerant system
US6032477A (en) * 1995-09-20 2000-03-07 Sun Microsystems, Inc. Method and apparatus for cooling electrical components
US6032476A (en) * 1995-09-20 2000-03-07 Sun Microsystems, Inc. Electronic device cooling apparatus
US6035656A (en) * 1995-09-20 2000-03-14 Sun Microsystems, Inc. Method and apparatus for cooling electrical components
US6038883A (en) * 1995-09-20 2000-03-21 Sun Microsystems, Inc. Electromagnetic wave-activated sorption refrigeration system
US6038878A (en) * 1995-09-20 2000-03-21 Sun Microsystems, Inc. Method and apparatus for cooling electrical components
US6044661A (en) * 1995-09-20 2000-04-04 Sun Microsystems, Inc. Coaxial waveguide applicator for an electromagnetic wave-activated sorption system
US6082129A (en) * 1995-09-20 2000-07-04 Sun Microsystems, Inc. Sorption refrigeration appliance
US6116039A (en) * 1995-09-20 2000-09-12 Sun Microsystems, Inc. Cooling apparatus having integrated sorber-evaporator structure
US5992168A (en) * 1995-09-20 1999-11-30 Sun Microsystems, Inc. Circuit board having an integral sorber
US6244056B1 (en) 1995-09-20 2001-06-12 Sun Microsystems, Inc. Controlled production of ammonia and other gases
US6263697B1 (en) 1995-09-20 2001-07-24 Sun Microsystems, Inc. Sorber having flexible housing
US6415626B1 (en) 1995-09-20 2002-07-09 Sun Microsystems, Inc. Sorber having flexible housing
US6349553B1 (en) 1995-09-20 2002-02-26 Sun Microsystems, Inc. Method and system for cooling electrical components
US6415627B1 (en) 1995-09-20 2002-07-09 Sun Microsystems, Inc. Sorber having a cooling mechanism
WO1998041802A1 (en) * 1997-03-20 1998-09-24 Sun Microsystems, Inc. Sorption refrigeration appliance
US7003979B1 (en) 2000-03-13 2006-02-28 Sun Microsystems, Inc. Method and apparatus for making a sorber
CN1330917C (zh) * 2005-08-12 2007-08-08 成都市武侯区金字塔设计室 带微波炉的电冰箱
WO2011108016A1 (en) 2010-03-03 2011-09-09 Sauro Bianchelli Innovative domestic appliance with dual function
ITAN20100111A1 (it) * 2010-07-02 2012-01-03 Sauro Bianchelli Innovativo elettrodomestico con duplice funzione

Also Published As

Publication number Publication date
JPS56146931A (en) 1981-11-14

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THORN EMI DOMESTIC APPLIANCES LIMITED

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19820410

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RUSS, ALAN EDWARD

Inventor name: SMITH, ROBERT DAVID