EP0609161B1 - Control for combined microwave and grill oven - Google Patents
Control for combined microwave and grill oven Download PDFInfo
- Publication number
- EP0609161B1 EP0609161B1 EP19940420022 EP94420022A EP0609161B1 EP 0609161 B1 EP0609161 B1 EP 0609161B1 EP 19940420022 EP19940420022 EP 19940420022 EP 94420022 A EP94420022 A EP 94420022A EP 0609161 B1 EP0609161 B1 EP 0609161B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grill
- chopping
- switch
- control
- magnetron
- 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
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- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000010411 cooking Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 210000001835 viscera Anatomy 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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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
- H05B6/647—Aspects related to microwave heating combined with other heating techniques
- H05B6/6482—Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating
Definitions
- the present invention relates to a control of electric microwave oven with built-in grill, according to the preamble to independent claims 1 and 6.
- microwave ovens that include an additional "grill” function; it is therefore about combined ovens, comprising on the one hand a magnetron for the microwave cooking, and at least one electric heating resistance.
- the microwave oven is controlled from classic way using an electro-mechanical timer also called “two-axis timer", comprising two buttons rotary of parallel axes, one of which regulates the power, and the other regulates the time of use.
- the adjustment of the power is achieved by positioning the first button rotatable in one or other of several positions angular, corresponding to a hash different from the power supply of the magnetron (setting the rate of work of the switch feeding the magnetron).
- document DE-A-3717224 shows an oven control in which a selector single rotary control of multiple electrical contacts allowing to selectively feed the grill or the magnetron, mounted in parallel.
- This document does not provide no concrete description of the electrical means and control mechanics, and it should be assumed that the components necessary to power the grill are entirely independent of those involved in feeding the magnetron.
- the command of the "grill" function cannot be done here by through the chopper associated with the magnetron.
- the device of document DE-A-3717224 contains no timer.
- EP-A-0489383 describes a control device for a microwave oven with grill incorporated, provided with a general selector controlling two microswitches.
- This document provides a timer, but it does not indicate any "hash” part. Either way, put share the common selector, the internal controls of "microwave” and “grill” functions remain here too separated.
- the present invention aims to avoid disadvantages of known embodiments, by providing a simplification and significant savings by removing separate orders and through the use of organs internal components, already existing components for control of the basic function "microwave” being applied here to the control of the "grill” function.
- the invention relates to an order electric microwave oven with built-in grill such as defined in claim 1.
- the rotary power selection knob has preferably an angular position itself additional for selecting the "grill" function, corresponding to the position of the internal organ at position adjustable angle for which the latter acts, by its spout on the chopping lever.
- the "hashing” part is used to selectively control the power supply of the function "grill".
- the control design according to the invention makes it possible to benefit from the time delay, provided by the "timer” part, when in use of the oven in its "grill” function, so as to control precisely the cooking time.
- the microwave oven thus has a "grill” function timed ".
- This embodiment therefore makes it possible to select the "grill” function from a control unit existing manual, and thus the external controls remain extremely simple.
- this solution particular necessarily puts the magnetron out of service, by interrupting the hash, when the "grill" function is selected.
- the mobile internal organ is advantageously shaped like a lever mounted to pivot about an axis parallel to the pivot axis of the chopping lever, and able to occupy said three angular positions predetermined, this lever having, on both sides of its pivot axis, two active ends cooperating respectively with the chopping lever and with the second flexible blade.
- this one can appear as a three-position cursor.
- Figures 1 and 2 show the front of a microwave, with a door 1 and a side panel of control 2, provided with a rotary button 3 for selecting power, with several angular positions identified, a rotary knob 4 for timer control, and a start button 5.
- the power selection by button 3 is done by hash, and the timer control button 4 has usually a double scale (expanded scale for short cooking times).
- the block diagram electric can be that of figure 3, where the mark 6 designates a magnetron for microwave cooking, and the reference 7 designates one or more electrical resistances grill heaters.
- Magnetron 6 and the electrical resistors 7, as well as a micro-motor electric 8 for the timer drive, are connected in parallel in the same circuit, supplied in its whole via a switch 9 belonging to the "timer” part.
- the magnetron 6 and the or the heating resistors 7 of the grill are supplied, selectively, by at least one switch 10 belonging to the "hash" part.
- the chopping switch 10 has a flexible blade 11, movable between a first contact 12 connected to the magnetron 6, and a second contact 13 connected to the resistor (s) 7.
- the blade 11 has a fixed point of attachment 14, electrically connected to the switch 9.
- This blade 11 is controlled from rotary knob 3, which includes this effect in addition to the corresponding angular positions at various power levels, an angular position additional GR for controlling the "grill" function (see figure 1).
- the switch 9 is thus designed as a inverter.
- FIG. 5 shows a particular embodiment of the chopping switch 10, with its flexible blade 11 one end of which is anchored at a fixed point 14, and whose the free end is here applied against the first contact 12 connected to the magnetron.
- Switch 10 here comprises an auxiliary flexible blade 18, one of which end is fixed at a point corresponding to the second contact 13, and the other end of which is free but capable of come to bear on a fixed stop 35, form a contact auxiliary 19 which is located opposite the first contact 12, the free end of the blade 11 being placed between the contacts 12 and 19 and able to move between these two contacts.
- the device also includes, from the point of view mechanical, a member with adjustable angular position 20, mounted rotating around a fixed axis 21 and provided with a central pinion 22, which engages with a sector swivel gear (not shown), itself actuated by via a cam from the rotary knob selection 3.
- the member 20 cooperates by dogs with a coaxial toothed wheel 23, driven in rotation and suitable for also describe an axial movement against the action of a spring.
- the toothed wheel 23 forms a cooperating cam with a chopping lever 24, pivotally mounted around a axis 25 close to point 14, the free end of lever 24 being located opposite the blade 11.
- the member 20 also has a spout 26 itself giving a certain cam profile, the spout 26 being provided to cooperate with lever 24 in a way that will described below.
- the spout 26 does not intervene and it is the toothed wheel 23 which, according to the angular position of the rotary member 20, acts at each turn by its periphery on lever 24, to alternatively hold the blade 11 on the contact 12 or move it away slightly, and feed it so minced the magnetron, in a classic way, the grill being kept out of service.
- the oven works like this like a conventional microwave oven, at a power adjusted by rotary knob 3.
- figure 7 still shows an intermediate position of the blade 11 and lever 24, position in which the blade 11 is separated from contact 12 but remains at a distance from contact 19 (temporary position of non-supply of the magnetron, in "microwave" operating mode with mincing).
- a stop 35 can ensure the retaining the free end of the auxiliary blade 18, such that in such an intermediate position the auxiliary contact 19 is securely held at distance from the free end of the blade 12.
- FIG. 2 Figures 2,4,8 and 9, in which it will be now refers to, relate to an order with "built-in selector", in which, as illustrated in particular the block diagram of FIG. 4, the switch 10 of the “chopping" part is double, that is to say that it has two blades 11A and 11B allowing a supply independent of magnetron 6 and of the grill element (s) 7.
- This switch double 10 is manually controlled from a selector, which in the external presentation particular illustrated by figure 2 is a cursor 29 can be moved between three positions: a "microwave” position MO, a "grill” position GR and a combined position "microwave and grill” marked MO + GR, coupling the two basic "microwave” and "grill” functions for cooking combined.
- Figure 8 shows a practical realization corresponding, with a housing 17 containing the part "timer” 15 and the “hash” part 16, whose generally known building blocks will not described, the organs corresponding to those previously appointed being designated by the same references.
- the first flexible blade 11A has a fixed attachment point 14, electrically connected to switch 9 in the "timer” section (see also figure 4).
- the second flexible blade 11B has a point fixed attachment 13, and a free end situated opposite of that of the first blade 11A. Points 12 and 13 retain their previous meanings, i.e. that these are the fixed contacts of the hash 10, connected respectively to magnetron 6 and to or heating resistors 7.
- the chopping lever 24, controlled by the wheel toothed 23, acts here only on the first blade 11A, while the member 20 has no spout.
- Another lever 30 is provided, pivotally mounted. around an axis 31 parallel to the pivot axis 25 of the chopping lever 24.
- the lever 30 is controlled from of the cursor 29.
- This lever 30 has a first end 32 and a second end 33, located on either side of its pivot axis 31.
- the lever 30 In a first position (figure 8), the lever 30 is oriented so that it does not act on any of the two blades 11A and 11B. The free ends of both blades 11A and 11B thus remain applied one against the other the other, and these blades make an electrical connection between points 13 and 14.
- the "grill” function is thus powered.
- the first blade 11A comes to bear on contact 12, and it deviates from it periodically at rhythm imposed by the control of the chopping lever 24 by the wheel 20.
- the "microwave” function is thus supplied, simultaneously with the "grill” function but with the effect of hash.
- FIGs 11 and 12 partially show a variant, functionally equivalent to ordering with "timed grill” function according to Figures 5 to 7, but comprising in the "chopping" part 16 a switch 10 which has a single flexible blade 11, the auxiliary blade being deleted.
- the single blade 11 has one end anchored at a fixed point 14, electrically connected to the switch in the "timer” section.
- the free end of the blade 11 is movable between a first fixed contact 12, connected to the magnetron, and a second fixed contact 13, connected to or resistance to the grill.
- This variant materializes so exactly the block diagram of figure 3, with reversing switch.
- Figure 11 illustrates the position operating mode "microwave”, for which the lever hash 24 is not moved by the spout 26 of the member 20, so that the blade 11 remains raised and cooperates with contact 12.
- Figure 12 illustrates the position of "grill” operation, for which the chopping lever 24, moved by the spout 26, lowers the blade 11, spreading it so from contact 12 and pressing it against the other contact 13.
- FIGs 13 and 14 partially represent another variant, functionally equivalent to the control with "timed grill” function according to the figures 5 to 7, but comprising in the "chopping” part 16 a switch 10 somewhat modified.
- Switch 10 here again comprises a main blade 11 and a blade auxiliary 18, but the mechanical supports are different.
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Description
La présente invention concerne une commande de
four électrique à micro-ondes avec gril incorporé, selon
le préambule des revendications indépendantes 1 et 6.The present invention relates to a control of
electric microwave oven with built-in grill, according to
the preamble to
On connaít les fours à micro-ondes qui comportent une fonction supplémentaire "gril" ; il s'agit donc de fours combinés, comprenant d'une part un magnétron pour la cuisson par micro-ondes, et d'autre part au moins une résistance électrique chauffante.We know microwave ovens that include an additional "grill" function; it is therefore about combined ovens, comprising on the one hand a magnetron for the microwave cooking, and at least one electric heating resistance.
La commande d'un four à micro-ondes s'effectue de façon classique à l'aide d'une minuterie électro-mécanique dite aussi "minuterie deux axes", comprenant deux boutons rotatifs d'axes parallèles dont l'un règle la puissance, et l'autre règle le temps d'utilisation. Le réglage de la puissance est réalisé en positionnant le premier bouton rotatif sur l'une ou l'autre de plusieurs positions angulaires, correspondant à un hachage différent de l'alimentation électrique du magnétron (réglage du taux de travail de l'interrupteur alimentant le magnétron).The microwave oven is controlled from classic way using an electro-mechanical timer also called "two-axis timer", comprising two buttons rotary of parallel axes, one of which regulates the power, and the other regulates the time of use. The adjustment of the power is achieved by positioning the first button rotatable in one or other of several positions angular, corresponding to a hash different from the power supply of the magnetron (setting the rate of work of the switch feeding the magnetron).
Dans le cas de l'adjonction de la fonction "gril", on prévoit actuellement des composants externes et internes supplémentaires, tels qu'interrupteurs, spécialement affectés à la commande de cette fonction, ce qui augmente la complexité et le coût de l'ensemble.In the case of adding the "grill" function, we are currently planning external components and additional internals, such as switches, specially assigned to the control of this function, this which increases the complexity and the cost of the whole.
Des exemples de commandes de four électrique à micro-ondes avec fonction supplémentaire "gril" sont donnés par les documents DE-A-3717224, EP-A-0213442 et EP-A-0489383.Examples of electric oven controls at microwave with additional "grill" function are given by documents DE-A-3717224, EP-A-0213442 and EP-A-0489383.
Plus particulièrement, le document DE-A-3717224 montre une commande de four dans laquelle un sélecteur rotatif unique commande de multiples contacts électriques permettant d'alimenter sélectivement le gril ou le magnétron, montés en parallèle. Ce document ne fournit aucune description concrète des moyens électriques et mécaniques de la commande, et il y a lieu de supposer que les composants nécessaires à l'alimentation du gril sont entièrement indépendants de ceux intervenant pour l'alimentation du magnétron. En particulier, la commande de la fonction "gril" ne saurait être ici faite par l'intermédiaire du hacheur associé au magnétron. De plus, le dispositif du document DE-A-3717224 ne comporte aucune minuterie.More particularly, document DE-A-3717224 shows an oven control in which a selector single rotary control of multiple electrical contacts allowing to selectively feed the grill or the magnetron, mounted in parallel. This document does not provide no concrete description of the electrical means and control mechanics, and it should be assumed that the components necessary to power the grill are entirely independent of those involved in feeding the magnetron. In particular, the command of the "grill" function cannot be done here by through the chopper associated with the magnetron. Moreover, the device of document DE-A-3717224 contains no timer.
Le document EP-A-0489383 précité décrit un dispositif de commande d'un four à micro-ondes avec gril incorporé, pourvu d'un sélecteur général commandant deux microrupteurs. Ce document prévoit une minuterie, mais il n'indique aucune partie "hachage". De toute façon, mis à part le sélecteur commun, les commandes internes des fonctions "micro-ondes" et "gril" restent ici aussi séparées.The aforementioned document EP-A-0489383 describes a control device for a microwave oven with grill incorporated, provided with a general selector controlling two microswitches. This document provides a timer, but it does not indicate any "hash" part. Either way, put share the common selector, the internal controls of "microwave" and "grill" functions remain here too separated.
La présente invention vise à éviter les inconvénients des réalisations connues, en apportant une simplification et une économie notables par la suppression des commandes séparées et par l'utilisation d'organes internes communs, des composants déjà existants pour la commande de la fonction de base "micro-ondes" étant appliqués ici à la commande de la fonction "gril".The present invention aims to avoid disadvantages of known embodiments, by providing a simplification and significant savings by removing separate orders and through the use of organs internal components, already existing components for control of the basic function "microwave" being applied here to the control of the "grill" function.
A cet effet, selon un premier aspect, l'invention a pour objet une commande de four électrique à micro-ondes avec grill incorporé telle que définie dans la revendication 1. To this end, according to a first aspect, the invention relates to an order electric microwave oven with built-in grill such as defined in claim 1.
Dans ce cas, le bouton rotatif de sélection de puissance possède de préférence lui-même une position angulaire supplémentaire pour la sélection de la fonction "gril", correspondant à la position de l'organe interne à position angulaire réglable pour laquelle ce dernier agit, par son bec, sur le levier de hachage.In this case, the rotary power selection knob has preferably an angular position itself additional for selecting the "grill" function, corresponding to the position of the internal organ at position adjustable angle for which the latter acts, by its spout on the chopping lever.
Ainsi, la partie "hachage" est mise à profit pour commander sélectivement l'alimentation de la fontion "gril". De plus, la conception de la commande selon l'invention permet de bénéficier de la temporisation, procurée par la partie "minuterie", lors de l'utilisation du four dans sa fonction "gril", de manière à contrôler avec précision le temps de cuisson. En d'autres termes, le four à micro-ondes comporte ainsi une fonction "gril temporisé".Thus, the "hashing" part is used to selectively control the power supply of the function "grill". In addition, the control design according to the invention makes it possible to benefit from the time delay, provided by the "timer" part, when in use of the oven in its "grill" function, so as to control precisely the cooking time. In other words, the microwave oven thus has a "grill" function timed ".
Ce mode de réalisation permet donc de sélectionner la fonction "gril" à partir d'un organe de commande manuelle existant, et ainsi les commandes extérieures restent extrêmement simples. Toutefois, cette solution particulière met nécessairement le magnétron hors service, en interrompant le hachage, lorsque la fonction "gril" est sélectionnée.This embodiment therefore makes it possible to select the "grill" function from a control unit existing manual, and thus the external controls remain extremely simple. However, this solution particular necessarily puts the magnetron out of service, by interrupting the hash, when the "grill" function is selected.
Dans le cadre de la présente invention, on propose aussi un autre mode de réalisation dit à "sélecteur incorporé", relevant du même concept mais rendant possible un fonctionnement simultané "micro-ondes" et "gril", moyennant un organe de sélection supplémentaire qui permet de commander ces fonctions séparément ou de les coupler pour une cuisson combinée, en conservant alors pour la fonction "micro-ondes" (utilisée seule ou simultanément au gril) la faculté de réglage de puissance par hachage.In the context of the present invention, it is proposed also another embodiment said to "selector incorporated ", from the same concept but making it possible simultaneous "microwave" and "grill" operation, by means of an additional selection body which allows to control these functions separately or to couple them for combined cooking, keeping for "microwave" function (used alone or simultaneously with grill) the power setting power by chopping.
Ce mode de réalisation alternatif est défini dans la revendication 6. This alternative embodiment is defined in
L'organe interne mobile est avantageusement conformé en levier monté pivotant, autour d'un axe parallèle à l'axe de pivotement du levier de hachage, et apte à occuper lesdites trois positions angulaires prédéterminées, ce levier possédant, de part et d'autre de son axe de pivotement, deux extrémités actives coopérant respectivement avec le levier de hachage et avec la seconde lame flexible. Quant au sélecteur manuel, celui-ci peut se présenter comme un curseur à trois positions.The mobile internal organ is advantageously shaped like a lever mounted to pivot about an axis parallel to the pivot axis of the chopping lever, and able to occupy said three angular positions predetermined, this lever having, on both sides of its pivot axis, two active ends cooperating respectively with the chopping lever and with the second flexible blade. As for the manual selector, this one can appear as a three-position cursor.
De toute façon, l'invention sera mieux comprise à
l'aide de la description qui suit, en référence au dessin
schématique annexé représentant, à titre d'exemples,
quelques formes d'exécution de cette commande de four
électrique à micro-ondes avec gril incorporé :
Les figures 1 et 2 montrent la façade d'un four à
micro-ondes, avec une porte 1 et un bandeau latéral de
commande 2, muni d'un bouton rotatif 3 de sélection de
puissance, avec plusieurs positions angulaires repérées,
d'un bouton rotatif 4 de commande de minuterie, et d'une
touche de mise en marche 5. D'une manière connue, la
sélection de puissance par le bouton 3 se fait par
hachage, et le bouton 4 de commande de minuterie comporte
généralement une double échelle (échelle dilatée pour les
temps de cuisson courts).Figures 1 and 2 show the front of a
microwave, with a door 1 and a side panel of
Dans le cas présent, il s'agit d'un four à micro-ondes
avec gril incorporé, dont le schéma de principe
électrique peut être celui de la figure 3, où le repère 6
désigne un magnétron pour la cuisson par micro-ondes, et
le repère 7 désigne une ou des résistances électriques
chauffantes du gril. Le magnétron 6 et la ou les
résistances électriques 7, de même qu'un micro-moteur
électrique 8 pour l'entraínement de la minuterie, sont
montés en parallèle dans un même circuit, alimenté dans
son ensemble par l'intermédiaire d'un interrupteur 9
appartenant à la partie "minuterie". Le magnétron 6 et la
ou les résistances chauffantes 7 du gril sont alimentés,
de façon sélective, par au moins un interrupteur 10
appartenant à la partie "hachage". In this case, it is a microwave oven
with built-in grill, including the block diagram
electric can be that of figure 3, where the
Selon le schéma de principe de la figure 3,
l'interrupteur de hachage 10 possède une lame flexible 11,
mobile entre un premier contact 12 relié au magnétron 6,
et un second contact 13 relié à la ou aux résistances
chauffantes 7. La lame 11 possède un point fixe d'attache
14, relié électriquement à l'interrupteur 9. Cette lame 11
est commandée à partir du bouton rotatif 3, qui comporte à
cet effet, en plus des positions angulaires correspondant
aux divers niveaux de puissance, une position angulaire
supplémentaire GR de commande de la fonction "gril" (voir
figure 1). L'interrupteur 9 est ainsi conçu comme un
inverseur.According to the block diagram in Figure 3,
the
Une réalisation pratique correspondante de la
commande est illustrée par la figure 5, dont la moitié
supérieure montre la partie "minuterie" connue en soi, qui
est désignée par la référence générale 15 et ne sera pas
décrite ici plus en détail. Dans la moitié inférieure de
la figure 5 apparaít la partie "hachage" 16 adaptée pour
réaliser la fonction supplémentaire "gril temporisé".
L'ensemble est logé dans un boítier 17, lui-même placé à
l'intérieur du four en arrière du bandeau de commande 2.A corresponding practical realization of the
control is illustrated in Figure 5, half of which
upper part shows the "timer" part known per se, which
is designated by the
La figure 5 montre une réalisation particulière de
l'interrupteur de hachage 10, avec sa lame flexible 11
dont une extrémité est ancrée en un point fixe 14, et dont
l'extrémité libre se trouve ici appliquée contre le
premier contact 12 relié au magnétron. L'interrupteur 10
comprend ici une lame flexible auxiliaire 18, dont une
extrémité est fixée en un point correspondant au second
contact 13, et dont l'autre extrémité, libre mais pouvant
venir en appui sur une butée fixe 35, forme un contact
auxiliaire 19 qui se situe en regard du premier contact
12, l'extrémité libre de la lame 11 étant placée entre les
contacts 12 et 19 et pouvant se déplacer entre ces deux
contacts.Figure 5 shows a particular embodiment of
the
Le dispositif comprend encore, du point de vue
mécanique, un organe à position angulaire réglable 20,
monté tournant autour d'un axe fixe 21 et pourvu d'un
pignon central 22, lequel vient en prise avec un secteur
denté pivotant (non représenté), lui-même actionné par
l'intermédiaire d'une came à partir du bouton rotatif de
sélection 3. L'organe 20 coopère par des crabots avec une
roue dentée 23 coaxiale, entraínée en rotation et apte à
décrire aussi un mouvement axial à l'encontre de l'action
d'un ressort. La roue dentée 23 forme une came qui coopère
avec un levier de hachage 24, monté pivotant autour d'un
axe 25 proche du point 14, l'extrémité libre du levier 24
étant située en regard de la lame 11.The device also includes, from the point of view
mechanical, a member with adjustable
L'organe 20 comporte encore un bec 26 lui
conférant un certain profil de came, le bec 26 étant prévu
pour coopérer avec le levier 24 d'une manière qui sera
décrite plus bas.The
Dans la position illustrée par la figure 5, le bec
26 n'intervient pas et c'est la roue dentée 23 qui, selon
la position angulaire de l'organe rotatif 20, agit à
chaque tour par sa périphérie sur le levier 24, pour
alternativement maintenir la lame 11 sur le contact 12 ou
l'en écarter légèrement, et alimenter ainsi de façon
hachée le magnétron, d'une manière classique, le gril
étant maintenu hors service. Le four fonctionne ainsi
comme un four à micro-ondes classique, à une puissance
réglée par le bouton rotatif 3.In the position illustrated in Figure 5, the
En amenant le bouton rotatif de sélection 3 sur la
position GR, l'utilisateur fait tourner l'organe 20 de
telle sorte que le bec 26 de son profil de came vient
pousser plus fortement sur un bossage 27 du levier de
hachage 24, lequel s'applique alors en permanence sur la
lame 11. L'extrémité libre de cette lame 11 se sépare
ainsi du contact 12, et vient en appui contre le contact
auxiliaire 19 porté par la lame auxiliaire 18. Une liaison
électrique est établie entre le point 14 et le contact 13,
de sorte que la ou les résistances du gril sont
alimentées - voir figure 6. Simultanément, le magnétron
est mis hors service, la fonction "hachage" étant
neutralisée, compte tenu de la position imposée au levier
24. La durée d'alimentation de la ou des résistances est
contrôlée par la partie "minuterie" 15, et le four est
ainsi utilisé en "gril temporisé".By bringing the
Pour une explication plus complète, la figure 7
montre encore une position intermédiaire de la lame 11 et
du levier 24, position dans laquelle la lame 11 est
séparée du contact 12 mais reste à distance du contact 19
(position temporaire de non-alimentation du magnétron, en
mode de fonctionnement "micro-ondes" avec hachage). On
notera que, si nécessaire, une butée 35 peut assurer la
retenue de l'extrémité libre de la lame auxiliaire 18, de
telle sorte que dans une telle position intermédiaire, le
contact auxiliaire 19 soit maintenu de façon certaine à
distance de l'extrémité libre de la lame 12.For a more complete explanation, figure 7
still shows an intermediate position of the
Les figures 2,4,8 et 9, auxquelles il sera
maintenant fait référence, concernent une commande avec
"sélecteur incorporé", dans laquelle, comme l'illustre
notamment le schéma de principe de la figure 4,
l'interrupteur 10 de la partie "hachage" est double,
c'est-à-dire qu'il comporte deux lames 11A et 11B
permettant une alimentation indépendante du magnétron 6 et
de la ou des résistances 7 du gril. Cet interrupteur
double 10 est commandé manuellement à partir d'un
sélecteur, qui dans la présentation extérieure
particulière illustrée par la figure 2 est un curseur 29
déplaçable entre trois positions : une position "micro-ondes"
MO, une position "gril" GR et une position combinée
"micro-ondes et gril" repérée MO+GR, couplant les deux
fonctions de base "micro-ondes" et "gril" pour une cuisson
combinée.Figures 2,4,8 and 9, in which it will be
now refers to, relate to an order with
"built-in selector", in which, as illustrated
in particular the block diagram of FIG. 4,
the
La figure 8 montre une réalisation pratique
correspondante, avec un boítier 17 renfermant la partie
"minuterie" 15 et la partie "hachage" 16, dont les
éléments constitutifs généralement connus ne seront pas
décrits, les organes correspondant à ceux précédemment
nommés étant désignés par les mêmes repères.Figure 8 shows a practical realization
corresponding, with a
Considérant plus particulièrement l'interrupteur
10 de la partie "hachage", la première lame flexible 11A
possède un point d'attache fixe 14, relié électriquement à
l'interrupteur 9 de la partie "minuterie" (voir aussi
figure 4). La seconde lame flexible 11B possède un point
d'attache fixe 13, et une extrémité libre située en regard
de celle de la première lame 11A. Les points 12 et 13
conservent leurs significations précédentes, c'est-à-dire
qu'il s'agit des contacts fixes de l'interrupteur de
hachage 10, reliés respectivement au magnétron 6 et à la
ou aux résistances chauffantes 7.Considering more particularly the
Le levier de hachage 24, commandé par la roue
dentée 23, agit ici seulement sur la première lame 11A,
tandis que l'organe 20 est dépourvu de bec.The chopping
Il est prévu un autre levier 30, monté pivotant
autour d'un axe 31 parallèle à l'axe de pivotement 25 du
levier de hachage 24. Le levier 30 est commandé à partir
du curseur 29. Ce levier 30 possède une première extrémité
32 et une seconde extrémité 33, situées de part et d'autre
de son axe de pivotement 31.Another
Dans une première position (figure 8), le levier
30 est orienté de telle sorte qu'il n'agit sur aucune des
deux lames 11A et 11B. Les extrémités libres des deux
lames 11A et 11B restent ainsi appliquées l'une contre
l'autre, et ces lames établissent une liaison électrique
entre les points 13 et 14. La fonction "gril" est ainsi
alimentée. En outre, la première lame 11A vient en appui
sur le contact 12, et elle s'en écarte périodiquement au
rythme imposé par la commande du levier de hachage 24 par
la roue 20. La fonction "micro-ondes" est ainsi alimentée,
simultanément à la fonction "gril" mais avec effet de
hachage.In a first position (figure 8), the
Lorsque le levier 30 est relevé, comme montré sur
la figure 9, son extrémité inférieure 33 vient abaisser la
seconde lame 11B, qui s'écarte ainsi de la première lame
11A. La liaison électrique entre les points 13 et 14 se
trouve ainsi interrompue et la fonction "gril" n'est plus
alimentée. Par contre, la première lame 11A reste en appui
sur le contact 12, et s'en écarte seulement sous l'action
du levier de hachage 24 commandé par la roue 20. Seule la
fonction "micro-ondes" est ainsi alimentée.When the
Enfin, lorsque le levier 30 est basculé, comme
montré sur la figure 10, son extrémité 33 libère de
nouveau la seconde lame 11B, mais son autre extrémité 32
vient appuyer sur le levier de hachage 24, qui lui-même
provoque alors l'abaissement de la première lame 11A,
l'écartant ainsi du contact 12. La fonction "micro-ondes"
est alors mise hors service. Par contre, les extrémités
libres des deux lames 11A et 11b sont maintenues en appui
l'une contre l'autre, ce qui établit entre les points 13
et 14 une liaison électrique alimentant la fonction
"gril".Finally, when the
On comprend donc que les trois positions de
fonctionnement, qui viennent d'être successivement
décrites en référence aux figures 8, 9 et 10,
correspondent respectivement aux positions MO + GR, MO et
GR du curseur 29. La liaison entre le curseur 29 et le
levier interne 30 est réalisable par tout moyen mécanique,
capable de convertir le mouvement de translation du
curseur 29 en un mouvement de rotation du levier 30.We therefore understand that the three positions of
functioning, which have just been successively
described with reference to FIGS. 8, 9 and 10,
correspond respectively to the positions MO + GR, MO and
GR of
Les figures 11 et 12 montrent partiellement une
variante, équivalente fonctionnellement à la commande avec
fonction "gril temporisé" selon les figures 5 à 7, mais
comportant dans la partie "hachage" 16 un interrupteur 10
qui possède une seule lame flexible 11, la lame auxiliaire
étant supprimée. La lame unique 11 possède une extrémité
ancrée en un point fixe 14, relié électriquement à
l'interrupteur de la partie "minuterie". L'extrémité libre
de la lame 11 est mobile entre un premier contact fixe 12,
relié au magnétron, et un second contact fixe 13, relié à
la ou aux résistances du gril. Cette variante concrétise
donc exactement le schéma de principe de la figure 3, avec
interrupteur inverseur. La figure 11 illustre la position
de fonctionnement "micro-ondes", pour laquelle le levier
de hachage 24 n'est pas déplacé par le bec 26 de l'organe
20, si bien que la lame 11 reste relevée et coopère avec
le contact 12. La figure 12 illustre la position de
fonctionnement "gril", pour laquelle le levier de hachage
24, déplacé par le bec 26, abaisse la lame 11, l'écartant
ainsi du contact 12 et l'appliquant contre l'autre contact
13.Figures 11 and 12 partially show a
variant, functionally equivalent to ordering with
"timed grill" function according to Figures 5 to 7, but
comprising in the "chopping" part 16 a
Les figures 13 et 14 représentent partiellement
une autre variante, équivalente fonctionnellement à la
commande avec fonction "gril temporisé" selon les figures
5 à 7, mais comportant dans la partie "hachage" 16 un
interrupteur 10 quelque peu modifié. L'interrupteur 10
comprend ici encore une lame principale 11 et une lame
auxiliaire 18, mais les appuis mécaniques sont différents.
En particulier, il est prévu sous la lame auxiliaire 18 un
point d'appui intermédiaire 34, pouvant être constitué par
un bossage intérieur formé sur le boítier 17. La flexion
de la lame auxiliaire 18 s'effectue sur le point d'appui
intermédiaire 34, lors du passage de la position "micro-ondes"
(figure 13) à la position "gril" (figure 14).Figures 13 and 14 partially represent
another variant, functionally equivalent to the
control with "timed grill" function according to the figures
5 to 7, but comprising in the "chopping" part 16 a
L'on pourrait envisager encore d'autres variantes, en ce qui concerne la configuration de l'interrupteur de la partie "hachage", qu'il s'agisse d'une commande avec fonction "gril temporisé" ou d'une commande avec fonction "sélecteur incorporé". Par ailleurs, dans le cas de la commande avec fonction "sélecteur incorporé", le sélecteur manuel est réalisable non seulement comme un curseur à mouvement linéaire, mais encore sous la forme d'un sélecteur rotatif, ou bien sous la forme d'un sélecteur à touches, les dispositions extérieures illustrées par les figures 1 et 2 n'étant évidemment pas limitatives et ne constituant que des exemples de présentations.We could also consider other variants, regarding the configuration of the switch the "hash" part, whether it is an order with "timed grill" function or of a control with function "built-in selector". Furthermore, in the case of control with "built-in selector" function, the selector manual is achievable not only as a slider to linear motion but still in the form of a rotary selector, or in the form of a selector with keys, the external arrangements illustrated by the Figures 1 and 2 are obviously not limiting and do not constituting only examples of presentations.
Claims (9)
- Control for an electric microwave oven with incorporated grill, comprising a "timer" part (15) with a first switch (9) and a "chopping" part (16) having another switch (10) in series with the previous one, this other switch (10) having a contact (12) for supplying the magnetron (6) of the oven at a working rate which can be selected from a manual power selection device (3) forming part of the manual selection means (3), the switch (10) of the "chopping" part (16) having at least one other contact (13, 19) serving for the supply of the heating element or elements (7) of the grill, connected in parallel with the magnetron (6), the said manual selection means (3) being designed to selectively control the said at least one other contact (13, 19), a control in which the "chopping" part (16) comprises an internal member (20) with an angular position which can be adjusted by means of the manual power selection device (3), the said internal member (20) cooperating with a wheel (23) continuously driven in rotation and movable axially in order to determine, by means of a chopping lever (24), the alternating closure and opening times of a flexible-blade electrical contact (11) forming part of the switch (10) of this "chopping" part (6), for the purpose of supplying the magnetron (6) according to the required working rate, characterised in that the said internal member (20), with an adjustable angular position, is provided with a nose (26) designed to cooperate with the chopping lever (24), and in that this internal member (20) has an additional predetermined angular position in which its nose (26) acts on the chopping lever (24) in order to move at least one flexible blade (11, 18) of the switch (10) of the "chopping" part (15), with a view to supplying the element or elements (7) of the grill through the switch (10) of the "chopping" part (16).
- Control for an electric microwave oven with incorporated grill according to Claim 1, characterised in that the manual power selection device is a rotary knob (3) connected mechanically to the aforementioned internal member (20), in order to adjust the angular position of the latter, and in that the rotary power selection knob (3) itself has an additional angular position (GR) for selecting the "grill" function, corresponding to the position of the internal member (20) with adjustable angular position in which the latter acts, by means of its nose (26), on the chopping lever (24).
- Control for an electric microwave oven with incorporated grill according to Claim 1 or 2, characterised in that it is designed to selectively control the supply to the element or elements (7) of the grill, through the switch (10) of the "chopping" part (16), whilst benefitting from the timing afforded by the "timer" part (15).
- Control for an electric microwave oven with incorporated grill according to Claim 3, characterised in that the switch (10) of the "chopping" part is produced as a reversing switch, with a single flexible blade (11), anchored at a fixed point (14) electrically connected to the switch (9) of the "timer" part (15), the free end of the blade (11) being movable between a first fixed contact (12) for supplying the magnetron (6) and a second fixed contact (13) for supplying the element or elements (7) of the grill.
- Control for an electric microwave oven with incorporated grill according to Claim 3, characterised in that the switch (10) of the "chopping" part (16) comprises a flexible blade (11) anchored at a fixed point (14) electrically connected to the switch (9) of the "timer" part (15), and an ancillary flexible blade (18) anchored at a fixed point (13) connected to the element or elements (7) of the grill, the free end of the first blade (11) being movable between a fixed contact (12) for supplying the magnetron (6) and an ancillary contact (19) provided at the free end of the ancillary blade (18).
- Control for an electric microwave oven with incorporated grill, comprising a "timer" part (15) with a first switch (9) and a "chopping" part (16) having another switch (10) in series with the previous one, this other switch (10) having a contact (12) for supplying the magnetron (6) of the oven at a working rate which can be selected from a manual power selection device (3) forming part of the manual selection means (3), the switch (10) of the "chopping" part (16) having at least one other contact (13, 19) serving for the supply of the heating element or elements (7) of the grill, connected in parallel with the magnetron (6), the said manual selection means (3) being designed to selectively control the said at least one other contact (13, 19), a control in which the "chopping" part (16) comprises an internal member (20) with an angular position which can be adjusted by means of the manual power selection device (3), the said internal member (20) cooperating with a wheel (23) continuously driven in rotation and movable axially in order to determine, by means of a chopping lever (24), the alternating closure and opening times of a flexible-blade electrical contact (11A) forming part of the switch (10) of this "chopping" part (16), for the purpose of supplying the magnetron (6) according to the required working rate, characterised in that the switch (10) of the "chopping" part (16) has a second flexible blade (11B), connected to the contact (13) for supplying the heating element or elements (7) of the grill, and in that a movable internal member (30), connected to a three-position manual selector (29), cooperates with the chopping lever (24) and with the second flexible blade (11B), so that:in a first angular position of the movable internal member (30), corresponding to a first position (MO + GR) of the manual selector (29), the second flexible blade (11B) supplies the element or elements (7) of the grill, at the same time as the first flexible blade (11A) is able to supply the magnetron (6);in a second angular position of the movable internal member (30), corresponding to a second position (MO) of the manual selector (29), the second flexible blade (11B) does not supply the element or elements (7) of the grill, whilst the first flexible blade (11A) is able to supply the magnetron (6);in a third angular position of the movable internal member (30), corresponding to a third position (GR) of the manual selector (29), the second flexible blade (11B) supplies the element or elements (7) of the grill, whilst the first flexible blade (11A) is prevented from supplying the magnetron (6).
- Control for an electric microwave oven with incorporated grill according to Claim 6, characterised in that the said movable internal member (30) is shaped as a lever, mounted so as to pivot about a spindle (31) parallel to the pivot pin (25) of the chopping lever (24), and able to occupy the said three predetermined angular positions, this lever (30) having, on each side of its pivot spindle (31), two active ends (32, 33) cooperating respectively with the chopping lever (24) and with the second flexible blade (11B).
- Control for an electric microwave oven with incorporated grill according to Claim 6 or 7, characterised in that the three-position manual selector to which the said movable internal member (30) is connected, is a slider (29).
- Electric microwave oven with incorporated grill, provided with a control according to any one of Claims 1 to 8.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9301190A FR2701094B1 (en) | 1993-01-29 | 1993-01-29 | Electric microwave oven control with built-in grill. |
FR9301190 | 1993-01-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0609161A1 EP0609161A1 (en) | 1994-08-03 |
EP0609161B1 true EP0609161B1 (en) | 1998-10-28 |
Family
ID=9443692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940420022 Expired - Lifetime EP0609161B1 (en) | 1993-01-29 | 1994-01-25 | Control for combined microwave and grill oven |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0609161B1 (en) |
DE (1) | DE69414144D1 (en) |
ES (1) | ES2126089T3 (en) |
FR (1) | FR2701094B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5548104A (en) * | 1994-04-21 | 1996-08-20 | Samsung Electronics Co., Ltd. | Control apparatus of microwave oven having a magnetron and seperate heating element |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3528228A1 (en) * | 1985-08-06 | 1987-02-12 | Bosch Siemens Hausgeraete | ARRANGEMENT FOR CONTROLLING OVENS WITH MICROWAVE ENERGY AND / OR HEATING ENERGY |
DE3717224A1 (en) * | 1987-05-22 | 1988-12-08 | Licentia Gmbh | Baking and roasting oven |
FR2670273B1 (en) * | 1990-12-05 | 1998-03-06 | Moulinex Sa | DEVICE FOR CONTROLLING A MICROWAVE OVEN. |
-
1993
- 1993-01-29 FR FR9301190A patent/FR2701094B1/en not_active Expired - Fee Related
-
1994
- 1994-01-25 EP EP19940420022 patent/EP0609161B1/en not_active Expired - Lifetime
- 1994-01-25 ES ES94420022T patent/ES2126089T3/en not_active Expired - Lifetime
- 1994-01-25 DE DE69414144T patent/DE69414144D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2701094B1 (en) | 1995-03-17 |
DE69414144D1 (en) | 1998-12-03 |
FR2701094A1 (en) | 1994-08-05 |
EP0609161A1 (en) | 1994-08-03 |
ES2126089T3 (en) | 1999-03-16 |
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