EP0397020B1 - Dispositif de commande de la puissance d'un four à micro-ondes. - Google Patents

Dispositif de commande de la puissance d'un four à micro-ondes. Download PDF

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Publication number
EP0397020B1
EP0397020B1 EP90108314A EP90108314A EP0397020B1 EP 0397020 B1 EP0397020 B1 EP 0397020B1 EP 90108314 A EP90108314 A EP 90108314A EP 90108314 A EP90108314 A EP 90108314A EP 0397020 B1 EP0397020 B1 EP 0397020B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
shaft
actuator
control device
cam
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
EP90108314A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0397020A3 (fr
EP0397020A2 (fr
Inventor
Bernard Boin
Pierre Alexandre Gustave Brisard
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
Publication of EP0397020A2 publication Critical patent/EP0397020A2/fr
Publication of EP0397020A3 publication Critical patent/EP0397020A3/fr
Application granted granted Critical
Publication of EP0397020B1 publication Critical patent/EP0397020B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/10—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/004—Mechanisms for operating contacts for operating contacts periodically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing

Definitions

  • the invention relates to devices for controlling the power of microwave ovens comprising a timer, the movement of which causes a mechanism for periodically actuating the button of a switch mounted in the electrical supply circuit of the oven, as well that means for selecting operating modes which can be operated by the user and which are intended to influence the actuation mechanism so as to modify the closing and opening periods of said switch in order to obtain different cooking modes.
  • Gear devices intended to control the duration of closing and opening of a switch are known and have structures generally adapted to the application in which they are used.
  • the device described in patent FR-A-2 082 528 is intended to improve the programming of a washing machine and comprises an auxiliary timer associated with means making it possible to automatically change the gear ratio between a driving wheel and the wheel of the time of said auxiliary timer.
  • the device described in this patent comprises several toothed wheels thus contributing to increasing its size and the complexity of its assembly.
  • Patent FR-A-786,490 describes an apparatus intended to close an electrical circuit for a known time, thus allowing the study of certain circuits, the measurement of their time constant or the control of apparatuses such as relays, circuit breakers, recorders and in which a mechanical function must be subject to time during which they are excited.
  • Such a device requires an auxiliary electrical circuit and a means of time measurement which increases its size and the complexity of its assembly.
  • devices of this type manufactured according to the so-called watchmaking technique comprise relatively small parts and rigorous dimensions (for example a cam with a complicated profile), which makes their manufacturing cost relatively high.
  • the periodic actuation mechanism comprises an actuator which is mounted movable against an elastic means in a reciprocating movement and which carries a cam intended to come to act on the button of the switch, as well as a cylinder which is rotated by the timer and which is slidably mounted along its axis of rotation by means of a transmitter secured to the mode selector means, said actuator and said cylinder respectively having means of '' temporary mutual couplings such as a toothed zone carried by the actuator and at least one meshing zone provided on the lateral surface of the cylinder and comprising a series of teeth which are distributed circumferentially and which extend parallel to the axis of the cylinder according to different progressive lengths, thus defining a multiplicity of peripheral toothed tracks respectively having different arc lengths entes according to their location on the height of the cylinder, so that the engagement time of said cylinder with the actuator is dependent on the position of the cylinder on its axis relative to the actuator.
  • Figure 1 is a schematic view of a control device according to the invention.
  • the oven control device includes a timer, the movement of which, shown diagrammatically by the output pinion 1, leads to a periodic actuation mechanism for the button 2 of a switch 3, mounted in the electrical supply circuit of the oven, as well as selector means 4 of operating modes maneuverable by the user and intended to influence the actuation mechanism so as to modify the periods closing and opening of the switch 3 in order to obtain different cooking modes,
  • the actuation mechanism comprises an actuator 5 constituted by a rack which is mounted movable linearly against an elastic means such as a spring 6 in a reciprocating movement and which carries a cam 7 intended to come to act on the button 2 of the switch 3, as well as a cylinder 8 which is driven in rotation about its axis 9 by means of a toothed wheel 9 ′, and which is mounted to slide axially along said axis 9, by means of a transmitter 10 secured to the selector means 4, said rack 5 and said cylinder 8 respectively presenting temporary mutual coupling means such as the toothed zone 11 of the rack and two meshing zones 12 formed on the lateral surface of the cylinder 8 and diametrically opposite, thus leaving between them two smooth zones 13.
  • an actuator 5 constituted by a rack which is mounted movable linearly against an elastic means such as a spring 6 in a reciprocating movement and which carries a cam 7 intended to come to act on the button 2 of the switch 3, as well as a cylinder 8 which is driven in rotation about its axis
  • Each zone 12 comprises a series of teeth which are distributed circumferentially and which extend parallel to the axis 9 of the cylinder 8 according to different progressive lengths, thus defining a multiplicity of peripheral toothed tracks which respectively have different arc lengths in according to their location on the height of the cylinder 8, and of which, for example, two possible tracks P1 and P2 have been illustrated in broken lines.
  • each series each have an end 14 called base arranged on an arc of the edge of one 15 of the transverse faces 15, 16 of the cylinder 8 while the other end 17 called apex stops along d '' a helical line (shown in dashed lines in 18) joining the two faces 15 and 16 and winding from the end 14 of the smallest tooth towards the end 17 of the longest tooth 19 in the direction of rotation of the cylinder (arrow F), this tooth 19 extending over practically the entire height of the cylinder and being located at the head in the direction of rotation of said cylinder.
  • the mode selector means comprise a cam 20 driven in rotation by a control shaft 21 maneuverable by the user and mounted parallel to the axis 9 of the cylinder 8 and comprising an active part 22 extending in a helix taking place coaxially with said control tree.
  • the transmitter 10 having the shape of a fork, has a forked end 23 which surrounds the axis 9 and which engages with the flange 16 of the cylinder, while the other end 24 comes to bear on the active part 22 of said cam, the transmitter being slidably mounted along an axis 25 integral with the timer unit and also parallel to the axis 9 of said cylinder 8.
  • the control device thus produced operates in the following manner. Let us consider that the user maneuvers the control shaft 21 to bring the cam 20 to the position of FIG. 1. During this rotational movement, the transmitter 10 bearing by its end 24 on the active part 22 is brought to slide along the arrow G along the axis 25 and moves the cylinder 8 by its forked end 23 guided along the axis 9 until bringing it to the level shown.
  • the rotation of the cylinder according to arrow F therefore brings the track P1, which has the greatest number of teeth, in mesh with the rack thus causing its translation against the spring 6 (arrow H). Thanks to this translation, the cam 7 acts on the button 2 of the switch which, from its rest position corresponding to the closing of the magnetron supply circuit, passes to its open position thus cutting off said supply, and maintains this opening as long as the rack is engaged with track P1.

Landscapes

  • Electric Ovens (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Transmission Devices (AREA)
EP90108314A 1989-05-12 1990-05-02 Dispositif de commande de la puissance d'un four à micro-ondes. Expired - Lifetime EP0397020B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8906300 1989-05-12
FR8906300A FR2646962B1 (fr) 1989-05-12 1989-05-12 Dispositif de commande de la puissance d'un four a micro-ondes

Publications (3)

Publication Number Publication Date
EP0397020A2 EP0397020A2 (fr) 1990-11-14
EP0397020A3 EP0397020A3 (fr) 1991-10-30
EP0397020B1 true EP0397020B1 (fr) 1995-03-01

Family

ID=9381643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108314A Expired - Lifetime EP0397020B1 (fr) 1989-05-12 1990-05-02 Dispositif de commande de la puissance d'un four à micro-ondes.

Country Status (9)

Country Link
US (1) US5097105A (es)
EP (1) EP0397020B1 (es)
JP (1) JP2735360B2 (es)
KR (1) KR0146289B1 (es)
DE (1) DE69017257T2 (es)
ES (1) ES2068940T3 (es)
FR (1) FR2646962B1 (es)
IE (1) IE900289L (es)
PT (1) PT93976B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112178701A (zh) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 一种新型灶具及其控制方法
CN112178702A (zh) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 一种新型灶具及其控制方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420135A1 (de) * 1994-06-09 1995-12-14 Licentia Gmbh Steuer- und Anzeigeeinrichtung für einen elektronischen Herd o. dgl.
KR200142130Y1 (ko) * 1994-08-17 1999-06-01 전주범 전자렌지의 타이머장치와 출력조절장치의 설치구조
KR0146600B1 (ko) * 1995-07-19 1998-08-17 배순훈 전자렌지의 전자제어식 타이머
GB2337319B (en) * 1998-05-13 2000-07-19 Samsung Electronics Co Ltd Control panel for a microwave oven
US8931359B2 (en) 2011-09-19 2015-01-13 Vivero One Research, Llc Parallelogram based actuating device
US8464603B2 (en) * 2011-09-19 2013-06-18 Vivero One Research, Llc Parallelogram based actuating device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR786490A (fr) * 1934-05-23 1935-09-03 Arnoux Vve Chauvin & Cie Appareil pour la production d'émissions de courant de durée réglable et connue
GB898037A (en) * 1959-09-15 1962-06-06 Brentford Transformers Ltd Improvements in intermittent reversing drives
FR2082528A5 (es) * 1970-03-17 1971-12-10 Crouzet & Cie
US4177370A (en) * 1976-02-13 1979-12-04 Sharp Kabushiki Kaisha Variable cooking mode selector in a microwave oven
US4129769A (en) * 1976-03-11 1978-12-12 Sharp Kabushiki Kaisha Timer arrangement in a combination microwave oven and electric heating oven
US4133998A (en) * 1976-06-22 1979-01-09 Sharp Kabushiki Kaisha Cooking mode selector for continuously varying a mean output level of a magnetron in a microwave oven
US4629845A (en) * 1983-05-02 1986-12-16 Eaton Corporation Electrical appliance programming
US4551590A (en) * 1984-05-14 1985-11-05 Eaton Corporation Appliance control and programmer timer therefor
US4678930A (en) * 1986-02-05 1987-07-07 Eaton Corporation Microwave oven timer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112178701A (zh) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 一种新型灶具及其控制方法
CN112178702A (zh) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 一种新型灶具及其控制方法
CN112178701B (zh) * 2020-09-17 2022-03-18 宁波方太厨具有限公司 一种新型灶具及其控制方法
CN112178702B (zh) * 2020-09-17 2022-03-18 宁波方太厨具有限公司 一种新型灶具及其控制方法

Also Published As

Publication number Publication date
PT93976A (pt) 1991-01-08
DE69017257T2 (de) 1995-07-06
EP0397020A3 (fr) 1991-10-30
FR2646962B1 (fr) 1992-07-31
PT93976B (pt) 1997-08-29
DE69017257D1 (de) 1995-04-06
KR0146289B1 (ko) 1998-09-15
FR2646962A1 (fr) 1990-11-16
JPH03129210A (ja) 1991-06-03
JP2735360B2 (ja) 1998-04-02
IE900289L (en) 1990-11-12
ES2068940T3 (es) 1995-05-01
KR900019092A (ko) 1990-12-24
US5097105A (en) 1992-03-17
EP0397020A2 (fr) 1990-11-14

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