EP0397020B1 - Power control device for a microwave oven - Google Patents

Power control device for a microwave oven 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
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EP
European Patent Office
Prior art keywords
cylinder
shaft
actuator
control device
cam
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Application number
EP90108314A
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German (de)
French (fr)
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EP0397020A2 (en
EP0397020A3 (en
Inventor
Bernard Boin
Pierre Alexandre Gustave Brisard
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Moulinex SA
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Moulinex SA
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Publication of EP0397020A3 publication Critical patent/EP0397020A3/en
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Publication of EP0397020B1 publication Critical patent/EP0397020B1/en
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    • 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.

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  • Electric Ovens (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Transmission Devices (AREA)

Description

L'invention se rapporte aux dispositifs de commande de la puissance des fours à micro-ondes comportant une minuterie dont le mouvement entraîne un mécanisme d'actionnement périodique de la touche d'un interrupteur monté dans le circuit d'alimentation électrique du four, ainsi que des moyens sélecteurs de modes de fonctionnement manoeuvrables par l'usager et destinés à influencer le mécanisme d'actionnement de manière à modifier les périodes de fermeture et d'ouverture dudit interrupteur afin d'obtenir des modes différents de cuisson.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.

Les dispositifs à engrenage destinés à commander la durée de fermeture et d'ouverture d'un interrupteur sont connus et possèdent des structures généralement adaptées à l'application dans laquelle ils sont utilisés. On connaît notamment les brevets français FR-A-2 082 528 et FR-A-786 490 décrivant de tels systèmes à engrenages.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. We know in particular the French patents FR-A-2 082 528 and FR-A-786 490 describing such gear systems.

Le dispositif décrit dans le brevet FR-A-2 082 528 est destiné à perfectionner la programmation d'une machine à laver et comporte une minuterie auxiliaire associée à des moyens permettant de changer automatiquement le rapport de démultiplication entre une roue motrice et la roue du temps de ladite minuterie auxiliaire. Le dispositif décrit dans ce brevet comporte plusieurs roues dentées contribuant ainsi à augmenter son encombrement et la complexité de son assemblage.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.

Le brevet FR-A-786 490 décrit un appareil destiné à fermer un circuit électrique pendant un temps connu, permettant ainsi l'étude de certains circuits, la mesure de leur constante de temps ou le contrôle des appareils tels que des relais, disjoncteurs, enregistreurs et dans lequel une fonction mécanique doit être asservie au temps pendant lequel ils sont excités. Un tel dispositif nécessite un circuit électrique auxiliaire et un moyen de mesure du temps ce qui augmente son encombrement et la complexité de son montage.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.

Par ailleurs les dispositifs de ce type fabriqués selon la technique dite horlogène comportent des pièces relativement petites et des cotes rigoureuses (par exemple came à profil compliqué) ce qui rend leur coût de fabrication relativement élevé.Furthermore, 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.

Selon l'invention le mécanisme d'actionnement périodique comprend un actionneur qui est monté mobile à l'encontre d'un moyen élastique selon un mouvement de va- et- vient et qui porte une came destinée à venir agir sur la touche de l'interrupteur, ainsi qu'un cylindre qui est entraîné en rotation par la minuterie et qui est monté coulissant le long de son axe de rotation au moyen d'un transmetteur solidaire des moyens sélecteurs de modes, ledit actionneur et ledit cylindre présentant respectivement des moyens d'accouplement mutuels temporaires tels qu'une zone dentée portée par l'actionneur et au moins une zone d'engrènement ménagée sur la surface latérale du cylindre et comportant une série de dents qui sont réparties circonférenciellement et qui s'étendent parallèlement à l'axe du cylindre selon des longueurs différentes progressives, définissant ainsi une multiplicité de pistes dentées périphériques présentant respectivement des longueurs d'arc différentes en fonction de leur emplacement sur la hauteur du cylindre, de sorte que la durée d'engrènement dudit cylindre avec l'actionneur soit dépendante de la position du cylindre sur son axe par rapport à l'actionneur.According to the invention 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.

Ainsi, un tel dispositif à engrenage s'avère d'une réalisation simple et robuste, n'exigeant pas une technique de moulage et d'assemblage de haute précision et permet donc de réduire les coûts de fabrication.Thus, such a gear device proves to be a simple and robust embodiment, not requiring a high precision molding and assembly technique and therefore makes it possible to reduce the manufacturing costs.

Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence au dessin annexé dans lequel :
   la figure 1 est une vue schématique d'un dispositif de commande selon l'invention.The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended drawing in which:
Figure 1 is a schematic view of a control device according to the invention.

Comme représenté, le dispositif de commande du four comporte une minuterie dont le mouvement schématisé par le pignon de sortie 1 entraîne un mécanisme d'actionnement périodique de la touche 2 d'un interrupteur 3, monté dans le circuit d'alimentation électrique du four, ainsi que des moyens sélecteurs 4 de modes de fonctionnement manoeuvrables par l'usager et destinés à influencer le mécanisme d'actionnement de manière à modifier les périodes de fermeture et d'ouverture de l'interrupteur 3 afin d'obtenir des modes différents de cuisson,As shown, 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,

Le mécanisme d'actionnement comprend un actionneur 5 constitué par une crémaillère qui est montée mobile linéairement à l'encontre d'un moyen élastique tel qu'un ressort 6 selon un mouvement de va-et-vient et qui porte une came 7 destinée à venir agir sur la touche 2 de l'interrupteur 3, ainsi qu'un cylindre 8 qui est entraîné en rotation autour de son axe 9 au moyen d' une roue dentée 9′, et qui est monté coulissant axialement le long dudit axe 9 , au moyen d'un transmetteur 10 solidaire des moyens sélecteurs 4, ladite crémaillère 5 et ledit cylindre 8 présentant respectivement des moyens d'accouplement mutuels temporaires tels que la zone dentée 11 de la crémaillère et deux zones d'engrènement 12 ménagées sur la surface latérale du cylindre 8 et diamétralement opposées, laissant ainsi entre elles deux zones lisses 13.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.

Chaque zone 12 comporte une série de dents qui sont réparties circonférenciellement et qui s'étendent parallèlement à l'axe 9 du cylindre 8 selon des longueurs différentes progressives, définissant ainsi une multiplicité de pistes dentées périphériques qui présentent respectivement des longueurs d'arc différentes en fonction de leur emplacement sur la hauteur du cylindre 8, et dont, par exemple, on a illustré en traits interrompus deux possibles pistes P1 et P2.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.

Les dents de chaque série présentent chacune une extrémité 14 dite de base agencée sur un arc de la bordure de l'une 15 des faces transversales 15 ,16 du cylindre 8 tandis que l'autre extrémité 17 dite de sommet s'arrête le long d'une ligne hélicoïdale (schématisée en traits interrompus en 18) joignant les deux faces 15 et 16 et s'enroulant de l'extrémité 14 de la plus petite dent vers l'extrémité 17 de la plus longue dent 19 dans le sens de rotation du cylindre (flèche F),cette dent 19 s'étendant sur pratiquement toute la hauteur du cylindre et étant située en tête dans le sens de rotation dudit cylindre.The teeth of 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.

Les moyens sélecteurs de modes comportent une came 20 entraînée en rotation par un arbre de commande 21 manoeuvrable par l'usager et monté parallèle à l'axe 9 du cylindre 8 et comportant une partie active 22 s'étendant selon une hélice se déroulant coaxialement audit arbre de commande. Le transmetteur 10, présentant la forme d'une fourchette, comporte une extrémité fourchue 23 qui vient entourer l'axe 9 et qui vient en prise avec le flasque 16 du cylindre, tandis que l'autre extrémité 24 vient prendre appui sur la partie active 22 de ladite came, le transmetteur étant monté coulissant selon un axe 25 solidaire du boîtier de minuterie et également parallèle à l'axe 9 dudit cylindre 8.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.

Le dispositif de commande ainsi réalisé fonctionne de la manière suivante. Considérons que l'usager manoeuvre l'arbre de commande 21 pour amener la came 20 en la position de la figure 1. Au cours de ce mouvement de rotation, le transmetteur 10 en appui par son extrémité 24 sur la partie active 22 est amené à coulisser selon la flèche G le long de l'axe 25 et déplace le cylindre 8 par son extrémité fourchue 23 guidée le long de l'axe 9 jusqu'à l'amener au niveau représenté . La rotation du cylindre selon la flèche F amène donc la piste P1, qui comporte le plus grand nombre de dents, en engrènement avec la crémaillère provoquant ainsi sa translation à l'encontre du ressort 6 (flèche H). Grâce à cette translation, la came 7 vient agir sur la touche 2 de l'interrupteur qui, de sa position de repos correspondant à la fermeture du circuit d'alimentation du magnétron, passe à sa position d'ouverture coupant ainsi ladite alimentation, et maintient cette ouverture tant que la crémaillère est en prise avec la piste P1.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.

Lorsque l'une des zones lisses 13 arrive en regard de la crémaillère et que la dernière dent de la piste P1 échappe à cette crémaillère, celle ci est repoussée par le ressort 6 de manière à reprendre sa position d'attente pour laquelle la touche 2 est libérée et l'interrupteur 3 est fermé.When one of the smooth zones 13 comes opposite the rack and the last tooth of the track P1 escapes from this rack, the latter is pushed back by the spring 6 so as to return to its waiting position for which the key 2 is released and switch 3 is closed.

Ainsi, grâce à la rotation continue du cylindre 8 on obtient une série de va-et- vient de la crémaillère 5 qui définit les périodes d'ouverture et de fermeture de l'interrupteur 3 et donc la puissance du four.Thus, by virtue of the continuous rotation of the cylinder 8, a series of back-and-forth movements of the rack 5 is obtained, which defines the opening and closing periods of the switch 3 and therefore the power of the oven.

Lorsque l'usager désire changer de mode de cuisson et donc modifier la puissance du four, il agit sur l'arbre de commande 21 de manière à faire coulisser le cylindre 8 le long de l'axe 9 jusqu'à atteindre un niveau différent par rapport à la crémaillère. Supposons que le cylindre 8 soit amené à un niveau correspondant à la piste illustrée en P2 (P2 comporte pratiquement 4 dents tandis que P1 en comporte 10), on comprendra que l'engrènement de la crémaillère et du cylindre est d'une durée plus courte que précédemment puisque le nombre de dents de cette piste est plus petit et que la crémaillère reste plus longtemps en regard de l'une des zones lisses 13 qui s'étend, à ce niveau, sur un arc de plus grande longueur que l'arc compris entre les deux pistes P1. Par conséquent, puisque la durée de fermeture de l'interrupteur 3 en sa position de repos est plus longue que précédemment, la période d'actionnement de la touche 2 de l'interrupteur 3 est modifiée et donc la puissance de fonctionnement du four est changée.When the user wishes to change the cooking mode and therefore modify the power of the oven, he acts on the control shaft 21 so as to slide the cylinder 8 along the axis 9 until reaching a different level by compared to the rack. Suppose that the cylinder 8 is brought to a level corresponding to the track illustrated in P2 (P2 has practically 4 teeth while P1 has 10), it will be understood that the engagement of the rack and the cylinder is of shorter duration than previously since the number of teeth on this track is smaller and the rack remains longer opposite one of the smooth zones 13 which extends, at this level, over an arc of greater length than the arc between the two tracks P1. Consequently, since the duration of closing of the switch 3 in its rest position is longer than previously, the period of actuation of the button 2 of the switch 3 is modified and therefore the operating power of the oven is changed .

Claims (5)

  1. Device for controlling the power of microwave ovens including a timer whose movement (1) drives a mechanism for the periodic actuation of the button (2) of a switch (3) mounted in the electric power supply circuit to the oven, and means (4) for selecting functioning modes which can be manoeuvred by the user and are designed to affect the actuation mechanism so as to modify the periods of closure and opening of the said switch (3) in order to obtain different cooking modes, characterised in that the periodic actuation mechanism comprises an actuator (5) which is mounted so as to be able to move against an elastic means (6) in a reciprocating movement and which carries a cam (7) designed to come to act on the button (2) of the switch (3), and a cylinder (8) which is rotated by the timer and which is mounted so as to slide along its rotation shaft (9) by means of a transmitter (10) fixed to the mode selection means (4), the said actuator (5) and the said cylinder (8) having respectively temporary mutual coupling means such as a toothed area (11) carried by the actuator (5) and at least one meshing area (12) provided on the lateral surface of the cylinder (8) and having a series of teeth which are distributed circumferentially and which lie parallel to the shaft (9) of the cylinder (8) in different progressive lengths, thus defining a multiplicity of peripheral toothed tracks (P1, P2...) having respectively different lengths of arc according to their position on the height of the cylinder (8), so that the duration of meshing of the said cylinder (8) with the actuator (5) is dependent on the position of the cylinder (8) on its shaft with respect to the actuator.
  2. Control device according to Claim 1, characterised in that the actuator (5) consists of a rack which is mounted so as to be able to move linearly in a direction transverse to the rotation shaft (9) of the cylinder (8) and on which a region adjacent to the toothed area (11) carries the cam (7).
  3. Control device according to Claim 1 or 2, characterised in that the teeth in the meshing area (12) each have a so-called base end (14) arranged on an arc on the edge of one (15) of the transverse faces (15, 16) of the cylinder (8) and a so-called top end (17) which stops along a helical line (18) joining the two transverse faces of the cylinder (8) and winding in a direction of rotation of the cylinder from the base end (14) to the top end (17), so that the longest tooth is situated at the head of the series of teeth.
  4. Control device according to any one of the preceding claims, characterised in that the cylinder (8) has two diametrically opposed meshing areas (12).
  5. Control device according to any one of the preceding claims, characterised in that the mode selection means (4) include a cam (20) rotated by a control shaft (21) mounted parallel to the shaft (9) of the cylinder (8) and having an active part (22) extending in a helix winding coaxially with the said control shaft (21), whilst the transmitter (10) has the shape of a fork which has a forked end (23) coming into engagement with one (16) of the faces of the cylinder (8) and the other end (24) of which comes to bear on the active part (22) of the cam (20), the said transmitter (10) being mounted so as to slide along a shaft (25) also parallel to the shaft (9) of the cylinder (8).
EP90108314A 1989-05-12 1990-05-02 Power control device for a microwave oven Expired - Lifetime EP0397020B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8906300 1989-05-12
FR8906300A FR2646962B1 (en) 1989-05-12 1989-05-12 DEVICE FOR CONTROLLING THE POWER OF A MICROWAVE OVEN

Publications (3)

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

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Family Applications (1)

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EP90108314A Expired - Lifetime EP0397020B1 (en) 1989-05-12 1990-05-02 Power control device for a microwave oven

Country Status (9)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112178701A (en) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 Novel stove and control method thereof
CN112178702A (en) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 Novel stove and control method thereof

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420135A1 (en) * 1994-06-09 1995-12-14 Licentia Gmbh Control and indicator unit for electronically regulated cooker
KR200142130Y1 (en) * 1994-08-17 1999-06-01 전주범 Establishment structure of timer and generating power regulating apparatus for microwave oven
KR0146600B1 (en) * 1995-07-19 1998-08-17 배순훈 Control timer of microwave oven
GB2337319B (en) * 1998-05-13 2000-07-19 Samsung Electronics Co Ltd Control panel for a microwave oven
US8464603B2 (en) * 2011-09-19 2013-06-18 Vivero One Research, Llc Parallelogram based actuating device
US8931359B2 (en) 2011-09-19 2015-01-13 Vivero One Research, Llc Parallelogram based actuating device

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FR786490A (en) * 1934-05-23 1935-09-03 Arnoux Vve Chauvin & Cie Apparatus for the production of current emissions of adjustable and known duration
GB898037A (en) * 1959-09-15 1962-06-06 Brentford Transformers Ltd Improvements in intermittent reversing drives
FR2082528A5 (en) * 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
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112178701A (en) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 Novel stove and control method thereof
CN112178702A (en) * 2020-09-17 2021-01-05 宁波方太厨具有限公司 Novel stove and control method thereof
CN112178701B (en) * 2020-09-17 2022-03-18 宁波方太厨具有限公司 Novel stove and control method thereof
CN112178702B (en) * 2020-09-17 2022-03-18 宁波方太厨具有限公司 Novel stove and control method thereof

Also Published As

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

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