EP0338315B1 - Four à micro-ondes - Google Patents

Four à micro-ondes Download PDF

Info

Publication number
EP0338315B1
EP0338315B1 EP89105860A EP89105860A EP0338315B1 EP 0338315 B1 EP0338315 B1 EP 0338315B1 EP 89105860 A EP89105860 A EP 89105860A EP 89105860 A EP89105860 A EP 89105860A EP 0338315 B1 EP0338315 B1 EP 0338315B1
Authority
EP
European Patent Office
Prior art keywords
switch
latch
pressure plate
microwave
control
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 - Lifetime
Application number
EP89105860A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0338315A2 (fr
EP0338315A3 (fr
Inventor
Pierre Chartrain
Bernard Marcel Bois
Michel Guy De Matteis
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.)
Moulinex SA
Original Assignee
Moulinex 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 Moulinex SA filed Critical Moulinex SA
Priority to AT89105860T priority Critical patent/ATE97779T1/de
Publication of EP0338315A2 publication Critical patent/EP0338315A2/fr
Publication of EP0338315A3 publication Critical patent/EP0338315A3/fr
Application granted granted Critical
Publication of EP0338315B1 publication Critical patent/EP0338315B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B6/66—Circuits
    • H05B6/68—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
    • H05B6/64—Heating using microwaves
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus
    • H05B6/6417—Door interlocks of the microwave heating apparatus and related circuits

Definitions

  • the invention relates to microwave ovens comprising a circuit for controlling the supply of a microwave energy generator connected to the terminals of a voltage source and comprising a main switch controlled by a movable handle. on a control panel, a mobile contact, normally closed, mounted in series with the switch and the opening of which is controlled by a timer which is connected to the terminals of the network by means of its own contact, and which the user can set to define the total duration of the microwave generator supply, as well as a connection switch mounted in series in the control circuit and occupying a normal closing position when the oven has its door closed and is ready to be put into operation.
  • a power supply control circuit of a microwave oven is known from American patent US-A-3766 437.
  • the object of the invention is in particular to eliminate this difficulty of adjustment.
  • control circuit further comprises a preprogrammed timing device mounted in series with a contactor in a branch circuit mounted in parallel between two points situated on either side of a section of the control comprising the movable contact and the connection switch, said contactor being actuated by a switching mechanism controlled by the user and capable of passing, on the one hand, said connection switch from its normal closed position to its position open for which the timer no longer controls the power supply to the microwave generator, and on the other hand, the contactor from its open position, for which the timing device is out of service, to a closed position for which said device is commissioned and provides power to the microwave generator.
  • the operation of operating the microwave oven for a short and precise duration is made automatic, and can be repeated, in a safe manner, in time since the timing device is preprogrammed.
  • the electrical diagram illustrated in FIG. 1 represents a circuit for controlling the supply of a microwave energy generator 10 intended to equip a microwave oven and to be connected to terminals 12 and 14 of a source. of alternating voltage.
  • This control circuit comprises, in a manner known per se, a main switch 16 controlled by a lever (18) mounted movably on a control panel shown diagrammatically at 20 in FIG.
  • control circuit further comprises a preprogrammed timing device 28 mounted in series with a contactor 34 in a branch circuit mounted in parallel between two points 30 and 32 located on either side of a section of the control circuit comprising the movable contact 22 and the connection switch 26, said contactor 34 being actuated by a switching mechanism 36 controlled by a pusher 38 which is operated by the user and which is mounted movable for this purpose on the control panel 20, between a rest position (FIG.
  • said switching mechanism 36 being able to pass, from a firstly, said switch 26 from its normal closed position to its open position for which the timer 24 no longer controls the supply 10 of the microwave generator, and secondly, the contactor 34 from its open position, for which the timing device 28 is out of service, in a closed position for which said device 28 is put into operation and supplies the power to the microwave generator.
  • the preprogrammed timing device 28 is preferably an electronic timer of a type known per se, the duration of which can be adjusted around a low value of the order of a minute, for example, between thirty seconds, and one minute and thirty seconds, by means of a potentiometer forming part of the timer 28 and the adjustment button 40 of which is arranged on the pusher 38.
  • the switching mechanism 36 comprises a rocker 42, in the general form of a fork with two teeth, pivotally mounted around a horizontal axis 44 disposed transversely to the control panel 20 between an arming position for which one 48 of the teeth of the rocker 42 acts on the key 50 of the connection switch 26 to bring it into the normal closed position and in which it is retained by a latch 52 movably mounted on said control panel 20 around a horizontal axis 52 ′ disposed transversely to the table 20, and an active position for which the other tooth 46 acts on the button 53 of the contactor 34 to bring it into its closed position and towards which it is biased by a return means 54 such as a spring, after unlocking the latch 52 of the tooth 48 by means of the pusher 38.
  • a return means 54 such as a spring
  • the pusher 38 has the general shape of a plate mounted articulated around a vertical axis 56 and comprises in its actuation zone a cam 60 directed horizontally towards the latch and the active part of which 61 is intended to engage with the free end 63 of said latch to obtain, on the one hand, the unlocking of this latch 52 when the pusher 38 is operated, and on the other hand, the pivoting of the rocker 42 from its position d arming in its active position.
  • This oven being further equipped with a control handle 64 for opening its door mounted vertically movable on the control panel 20, the rocker 42 comprises, in the vicinity of its pivot axis 44, an appendage 66 which is connected to said handle 64 by means of a loose assembly so as to allow pivoting of the rocker 42 from its cocking position to its active position, and resetting of said rocker when the control handle 64 is maneuvered in order to open said door .
  • This loose assembly being produced by means of a lug 68 integral with the handle 64 and engaged in a lumen 70 made in appendix 66.
  • the lever 18 of the main switch 16 is pivotally mounted about a horizontal axis 72 parallel to the control panel 20 and the pusher 38 has a tail 74 which is located opposite a tongue 76 integral with said lever, and which, when the pusher 38 is operated by the user, comes into engagement with said tongue 76 in order to ensure the pivoting of the lever 18 around the axis 72 and therefore the closing of the main switch 16.
  • the user After having adjusted the timing device 28 by means of the button 40, this in order to properly adapt the energy dosage to the preparation of the chosen dish, presses the pusher 38 according to the arrow F of FIG. 2.
  • This depression of the pusher 38 causes the latch 52 to be unlocked by action of the cam 60 on the free end 63 of this latch releasing the tooth 48 and allowing the rocker 42 to pivot under the effect of the spring 54 interposed between this end 63 and this rocker 42.
  • the electronic timer goes, in a manner known per se, to a non-conduction state for which the bypass circuit is cut and therefore the supply to the generator 10 is interrupted.
  • the user can open the oven door (opening mechanism not shown) by exerting on the handle 64, a downward pressure, according to the arrow H, which causes the lug 68 at the bottom of the light 70, and consequently the pivoting of the rocker 42 towards its rearming position until the tooth 48 is locked by the latch 52 pushed back by the spring 54 and simultaneously the return of the pusher 38 to its rest position illustrated in FIG. 2 .

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
EP89105860A 1988-04-21 1989-04-04 Four à micro-ondes Expired - Lifetime EP0338315B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89105860T ATE97779T1 (de) 1988-04-21 1989-04-04 Mikrowellenofen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805315A FR2630613B1 (fr) 1988-04-21 1988-04-21 Four a micro-ondes
FR8805315 1988-04-21

Publications (3)

Publication Number Publication Date
EP0338315A2 EP0338315A2 (fr) 1989-10-25
EP0338315A3 EP0338315A3 (fr) 1991-08-21
EP0338315B1 true EP0338315B1 (fr) 1993-11-24

Family

ID=9365541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105860A Expired - Lifetime EP0338315B1 (fr) 1988-04-21 1989-04-04 Four à micro-ondes

Country Status (15)

Country Link
US (1) US4910370A (xx)
EP (1) EP0338315B1 (xx)
JP (1) JPH01306729A (xx)
KR (1) KR950000398B1 (xx)
AR (1) AR244927A1 (xx)
AT (1) ATE97779T1 (xx)
CA (1) CA1308173C (xx)
DE (1) DE68910865T2 (xx)
DK (1) DK160889A (xx)
ES (1) ES2046358T3 (xx)
FR (1) FR2630613B1 (xx)
GB (1) GB2219700B (xx)
MX (1) MX171313B (xx)
PT (1) PT90330B (xx)
ZA (1) ZA892872B (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291538A (en) * 1994-07-15 1996-01-24 Delta Schoeller Ltd Interlocks for electrical switches
US5732776A (en) * 1995-02-09 1998-03-31 Baker Hughes Incorporated Downhole production well control system and method
ES2397014B1 (es) * 2010-10-19 2014-02-11 BSH Electrodomésticos España S.A. Base de bateria de coccion

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766437A (en) * 1972-04-03 1973-10-16 Amana Refrigeration Inc Safety interlock system for microwave ovens
US3824365A (en) * 1972-12-07 1974-07-16 Litton Systems Inc Microwave oven control system
JPS5743135A (en) * 1980-08-29 1982-03-11 Matsushita Electric Ind Co Ltd High frequency heating device
JPS57154789A (en) * 1981-03-20 1982-09-24 Matsushita Electric Ind Co Ltd High frequency heater
AU569262B2 (en) * 1982-11-05 1988-01-28 Matsushita Electric Industrial Co., Ltd. Oven cooker
US4629845A (en) * 1983-05-02 1986-12-16 Eaton Corporation Electrical appliance programming
JPS59228393A (ja) * 1983-06-10 1984-12-21 株式会社東芝 調理器

Also Published As

Publication number Publication date
DE68910865D1 (de) 1994-01-05
CA1308173C (fr) 1992-09-29
EP0338315A2 (fr) 1989-10-25
KR890016878A (ko) 1989-11-30
FR2630613A1 (fr) 1989-10-27
GB2219700A (en) 1989-12-13
DK160889D0 (da) 1989-04-03
ES2046358T3 (es) 1994-02-01
AR244927A1 (es) 1993-11-30
JPH01306729A (ja) 1989-12-11
MX171313B (es) 1993-10-18
FR2630613B1 (fr) 1992-06-19
US4910370A (en) 1990-03-20
ATE97779T1 (de) 1993-12-15
DK160889A (da) 1989-10-22
DE68910865T2 (de) 1994-04-28
GB2219700B (en) 1992-09-30
GB8907490D0 (en) 1989-05-17
KR950000398B1 (ko) 1995-01-16
PT90330B (pt) 1994-04-29
PT90330A (pt) 1989-11-10
ZA892872B (en) 1989-12-27
EP0338315A3 (fr) 1991-08-21

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