FR2550320A1 - COOKTOP, PARTICULARLY IN CERAMIC GLASS, WITH SERVICE FEATURES, OR MANEUVER - Google Patents

Abstract

COOKTOP, ESPECIALLY IN GLASS CERAMIC, WITH SERVING OR OPERATING UNITS. TABLE ALSO INCLUDING SERVICE COMPONENTS ASSIGNED TO AT LEAST ONE OF THE HEATING ZONES FOR TURNING ON AND OFF THE CIRCUIT AND CONTROL OF THE HEATING CAPACITY OF THE SAME, PLACED IN THE MARGINAL ZONE OF THE TABLE AND FUNCTIONALLY FORMING PART OF THE TABLE 'A CONTROL DEVICE. ONE OR MORE SERVICE UNITS 8 ESTABLISHED IN THE FORM OF PUSH BUTTONS ARE PLACED IN ONE OR MORE NARROW ZONES OF THE SAID TABLE 1, AND THE HEATING POWER CONTROL DEVICE IS ESTABLISHED REMOTE FROM THE SAID SERVICE UNITS 8 AND IS CONNECTED TO THE PUSH-BUTTONS BY ELECTRIC LINES. THE TABLE IS READY FOR INSERTION IN A KITCHEN SHAPED BY ELEMENTS.

Description

Cooktop, especially glass ceramics,

  with service organs, or maneuvering.

  The present invention relates to a hob, in particular glass ceramic, comprising a plurality of heating zones and service members, or maneuvering, assigned to at least one of these zones for switching on and off and controlling the heating power thereof being disposed in the marginal area of said table and functionally part of a device

control.

  The heating power of the known hobs is usually controlled by means of rotary switches. These operate mechanically, either on contacts which control the heating elements of the various cooking zones, or on bridges of resistors which act on an electronic circuit from which the heating power of the various zones is also controlled. These rotary switches can also be replaced by sliding switches performing similar functions. The provision of such switches, rotating or sliding, requires a sufficient space to

the service.

  It has also been envisaged to use touch-sensitive service components in the hobs to introduce control values of the heating power, but this use is still very problematic for the moment. An essential deficiency of this form of control lies in the uncertain nature of the introduction of functions.

  introduction very carefully and well monitored.

  There is also the risk of involuntary introductions.

  Known measures to avoid these disadvantages are generally of a very expensive realization and do not

  lead to success only to an extent sometimes limited.

  The relatively large size of the touch-sensitive introduction members poses other problems, especially since part of the connected electronic assembly must be placed close to said members in order to reduce the disturbances as low as possible. broadcast on the lines included between the introductory surface and the electronic operating unit. More and more efforts are being made to insert, for use, hobs, particularly glass ceramics, with complete or partial antarcism in kitchen work plates. announcement of the heating power control of the various zones must also be an integral part of the hob The place that must be reserved for these organs is then inevitably missing.

  for the work surface, ie for heating or serving surfaces.

  On the basis of these teachings, the object of the invention is a cooking hob which encloses service members saving space in favor of the work surface of said table while forming a fixed part thereof, but in which the service procedures are also applicable in a safe, clear, simple and simple manner. This hob, in particular glass ceramic, is characterized by the fact that one or more service members established in the form of pushbuttons are placed on one or more narrow zone (s) of said table and that the control devices of the heating power are placed at a distance from these organs

  of service established in the kind of push buttons and connected to said pushbuttons by power lines.

  The hob according to the invention offers on the known devices the particular advantage that the area to be reserved on it for the service organs can be held very small Push buttons require in themselves only a very small place for their service; they offer at the same time the advantage of being able to switch to

  through them currents that can be conveyed relatively

  The possibility of placing the electronic device for controlling the heating power away from the push-button-shaped introduction members, and this, is far from being possible on the power lines. practically where, as a result of other construction data, the place

  necessary is available or can be created.

  Therefore, according to a preferred embodiment of the invention, the service member (s) arranged in the kind of push buttons can be placed in one or more marginal areas of the hob It It is possible in particular to arrange them in the covering frame of said table. In the region of these service organs in the form of push buttons, the frame, in itself, very narrow since its width is usually 1 to 2 cm, requires only to be weakly expanded to accommodate

said organs.

  The introduction members established in the kind of push buttons are preferably arranged in pairs and each pair is associated with an announcement field. It is thus possible, as in the pressure sensitive introduction tables, to individually adjust the power. of heating and directly change its value upwards

and / or down.

  It is advantageous to have the corresponding announcement field each time between the push-button introduction members of a pair. On the other extension of the invention, there is provided on the table for the cooking utensils a surface of unheated service

  below which is placed the control device.

  Under these conditions, it is advantageous to interpose a refractory layer between the control device and the serving surface and to dispose in containers of the kind of cuvettesisolanb heat the heating devices 35 assigned to the cooking zones and placed below the According to another advantageous advantageous feature, a cavity opposing the action of heat between these containers on the one hand, and the control device and / or the service members, is provided.

on the other hand.

  The measures adopted in extension of the invention that the control device is directly associated with the hob, in the area below the serving surface, within a volume otherwise unused. In a hob where the standard service members of the heating power control are placed in a separate service panel, it is desirable to have in one or more narrow areas of said table one or more service members established in kind of pushbuttons for the introduction of special functions It is indeed customary to associate with the cooker 15 or to place in a table service organs

  standard for controlling the heating power.

  The control circuit is then normally also placed in the zone of these standard service members, and it is connected to the heating elements of the various zones of the table by electric lines traversed by power current. addition of additional functions by means of additional introduction devices Or, these additional introduction bodies are now integrated, saving space and safety

  of operation, in the same hob.

  According to another advantageous extension of the invention, the switching contacts of the push-button introduction members short circuit at crossing points of the lines of a functional matrix of conductors By means of decoupling diodes connected in series to the In the interior of the bridges, a decoupling of the bridges is obtained. The use of a functional conductor matrix at the crossing points from which the switching contacts actuable by the introduction members established in the form of pushbuttons reduces In addition, this arrangement creates favorable conditions for the use of microprocessors for control purposes, the "abscissa lines" of the matrix of conductors being preferably connected to the outputs, and the "lines" orderly "

  inputs, a modular microprocessor.

  In order to protect the inputs of such a modular microprocessor from overloading, resistance elements are advantageously inserted close to these inputs in the lines supplied to these inputs. reference determined the lines brought, so that said entries

  each time there is a clear and clear signal.

  According to other advantageous advantageous features of the invention: the device for controlling the heating power is placed in a flat bowl type container which is attached, preferably removably, to the limit plate which closes down the cooktop and its heaters; Said container has an upper protective cover and there is, between the latter and the delimiting plate, a cavity opposing the action of heat and / or a refractory layer; the service members comprise push-button switches which are fixed, preferably by soldering to printed circuits, on a connection board placed at a distance from a service board and which penetrate through their shank into openings. said table being operable by elastic buttons driven into said openings. The invention will be better understood by means of the

  detailed description of several embodiments

  BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a glass ceramic cooking table which includes heating zones as well as insertion and control elements. 'ad; Figure 2 is a side view of this hob with cross-sectional view of the region of the introduction members; Figure 3 is also a side view of the hob, but with cross-sectional view of the region of the electronic control device; Figure 4 is a partial view of the region of the announcement program of a hob modified with respect to the first; Figure 5 is a partial view of the region of an actuator of the modified hob; Figures 6 to 9 are top views of different arrangements of cooking tables; Fig. 10 is a simplified structure diagram of the heating power control; FIG. 11 represents a detail of the assembly according to

  Figure 10 at the crossing points of the introductory matrix.

  The hobs have, as working surfaces, ceramic glass plates 1 Heating zones 2,3,4,5,6 are arranged below

said ceramic plates.

  In the embodiment according to FIG. 1, insertion and advertisement elements 9 are placed in the somewhat enlarged zone for this purpose of the covering frame 7 turned towards the serving. The electronic control device 10 is housed in a rear area of the hob, below the ceramic plate 1, which

  serves as a serving surface at this location.

  Figures 2 and 3 show side views, with cross-section, of this hob There is a push-button type introduction member 8 placed in the cover frame 7 of the table below a Elastic cap 11 This introducer is very compact due to its pushbutton arrangement. The heating elements of the heating zones 5 and 6 are located below the glass ceramic plate 1 close to this body. introduction 8; they are housed inside a protective bowl 12 Behind this protective bowl 12 of the heating elements, and also below the glass ceramic plate, there is another 13 in which are housed the connecting part 14 to the mains and the elements of the electronic control device as well as the power amplifiers for the heating power control Both the bowl 12 and the air mattress of the open area 16 protect the components of the electronic device against the increased temperature range of the inside of the heating elements These same components are insulated with respect to the glass ceramic by an insulating plate 22 It is therefore possible to directly use the glass ceramic plate 1, above the electronic control device , as a serving surface even

for hot cooking vessels.

  It will be seen from FIGS. 4 and 5 that, in this second example, the frame 17 of the hob is inclined forwardly in the area of the announcement and service organs 19. A transparent plate 20 is inserted into a cutting of the cover plate 17 in the region of the announcing members 18 The frame 17 rests on the working plate 25 of the kitchen and carries the ceramic plate

of glass 1.

  As seen from FIG. 5, the service member designated 19 is in the form of an upwardly protruding pushbutton rod 30 which is directly part of a pushbutton switch or This push-button switch 191 is attached directly to a connection board 192, for example by mutual welding of the connecting elements.

  This switch and the connecting elements 35 or conductive paths of the connection board 192 are electrically operated.

  The push button rod 19 enters at its free end into an opening 193 of the service panel, or the frame 17 of the hob, opening in which an elastic push-button 194 in the type of cap is press-fitted. said button and elastic deformation thereof, it can move in axial translation push button rod 19 thereby triggering a switching process is thereby removed special transmission rods provided in known embodiments between the switches to In addition, such a transmission element 10 in the kind of rod does not require any guidance. The advantage of an essential simplification of assembly and repairs by reducing the number of elementary parts. In FIG. 2, a flat container of the kind of bowl 60 which is closed, at least for the most part, upwards by a protective cover 61 and which is fixed, preferably in a removable manner, has been drawn in phantom. to the boundary plate 62 which closes the cooktop and its heaters downwardly. This container 60 encloses the entire electronic control device of the various cooking zones for the case where, within the cooking table cooking, that is to say above the boundary plate 62, there would be no room to house this same device, that is to say that the entire volume of the table would be taken by heaters and the like As has also been indicated in dashed lines, electrical and / or electronic construction units, including a mains connection assembly, which are connected to the interior of the cooking table. by flexible power lines

  the service elements are placed, for example on a connection plate 63, inside the container 60.

  As can be seen from FIG. 2, a cavity 64 opposing the action of heat is located between the upper protective cover 61 and the disintegrating plate 62.

  In the example of the hob according to FIG. 6, the actuating members 28 and the announcing members 29 are placed on the side of the frame 27 facing the serving. As in the case of the example according to FIG. The pushbutton injection organs are assigned here as well as a pair to each heating zone, but they are arranged not on either side, but on the same side, of the announcement unit 29. two introduction members assigned to a pair has the role of raising the heating power of the corresponding zone, while the other introduction member 28 has the role of reducing this power The electronic control device is housed at below the hatched part which serves as a serving surface. FIG. 7 shows a different arrangement of the heating zones 32, 33, 34, 35, 36 in which the service area 37, under which the electronic control device is housed, is arranged laterally to the zones

of heating.

  FIG. 8 represents a ceramic plate hob 1 in which the introduction 48 and announcement 49 members are placed in a lateral bar of the frame 47 of the table. The service area 46,

  under which is the electronic control device, is placed directly next to said bar.

  Finally, FIG. 9 shows a hob without a standard introduction member for the heating zones 52, 53, 55, 56. In this case, the introduction members in question are placed in another induction panel. which can for example also be joined in space to a cooker control without this being shown here However, in a special model, it is also possible to use the two heating zones 52 and 53 together with the zone 54 as the heating surface. In the case of a common control heater, a push-button type individual push-button member 58 is used which is placed in a space-saving manner in a rear corner area of the door.

  glass ceramic plate 1 of the hob.

  In the other rear corner area of the glass ceramic plate 1 is placed a light indicator 59 which signals for example the presence of a residual heat in the glass ceramic plate 1 The zone 60 serves in this case to maintain FIG. 10 schematically illustrates the structure of a heating power control device using a modular microprocessor / P. Part of the pushbutton-type introduction members of the preceding examples of the switching contacts S which, connected in 1 diode series D as seen from Figure 11, each time short a crossing point 15 SD line attack AL and introduction EL The output lines AL are attacked one after the other at Through the modular microprocessor p P Si, in the crossing points SD ', one of the contacts S is closed, this signal is brought back to the input of the modular microprocessor UP. Because of the use of pushbutton-like introductory devices, these signals are barely subject to significant damping, the table being present in a clear and full intensity manner. Throughout the course of the lines and therefore also at the input of the modular microprocessor p P it follows that the modular microprocessor p P also and the following connection components can be placed at a distance from the switching contacts S in the points. crossover SD of the matrix without disturbing influences to be dreaded to a significant extent on lines of corresponding length Resistors R 1

  reduce the output pulse current of the modular microprocessor p P to the allowable input level.

  Other resistors R 2 serve to maintain, when the camutation contacts are open, the inputs of the modular microprocessor PP at a defined reference level.

  In the example under consideration, the announcement devices consist of four seven-segment SD arrays. They can be directly attacked by the modular microprocessor P. The modular microprocessor {P processes the input criteria for heating power commands recognized by means of pressure. different durations of the service members in the form of pushbuttons and therefore by more or less long closing of the switching contacts 10 S and form of the rates for said commands These control rates are delivered to relays R which control, in power amplifiers , the current for

  the heating elements of the various zones.

Claims (10)

  1 Cooking hob, in particular of glass ceramic, comprising a plurality of heating zones and service members, or maneuvering, assigned to at least one of these zones for switching on and off and controlling the heating power of that by being arranged in the marginal zone of the table and forming part of a control device, a hob characterized by the fact that one or more service members (8) in the form of pushbuttons are placed on one or more narrow areas of said table (1) and that the control device of the heating power is placed at a distance from these service members   established in kind of push buttons and is connected to said pushbuttons by power lines.   2 hob according to claim 1, characterized in that the or the service members (8) established in the kind of pushbuttons are placed in one or more marginal areas of the hob. 20 3 Cooktop according to any one of   according to claim 1 or 2, characterized in that the   the operating members 8 established in the type of push buttons are placed in the covering frame (7) of the hob 4 Cooktop according to any one of   claims 1 to 3, characterized in that the   introduction members (8) established in kind of pushbuttons are arranged in pairs.   Cooktop according to any one of   claims 11 to 4, characterized in that   announcement fields (9) are arranged in the immediate vicinity of the service members (8) established in the kind of pushbuttons.   6. The hob according to claim 5, characterized in that the respective annunciator field (9) is placed between the insertion members (8) each arranged in the kind of push buttons of a pair.   7 hob according to any one of claims 1 to 6, characterized in that it is   provided on its surface, for cooking utensils, an unheated serving surface below which is placed the control device (10). 8 hob according to claim 7, characterized in that a refractory layer (22) is interposed between the control device and the surface serving.   9 Cooktop according to any one of   claims 7 or 8, characterized in that the heating devices assigned to the cooking zones   (2,3,4,5,6) and placed below the surfaces of the table,   are housed in containers of the kind of cuvettesisolants 15 heat.   Cooktop according to claim 9, characterized in that a cavity (16) opposing the action of heat is provided between the containers   on the one hand and the control device and / or the service organs on the other hand.   11 Cooktop according to claim 1, wherein the standard service members for the heating power control are arranged in a separate service panel, characterized in that one or more service members established in the form of push-buttons pushers are placed, for the introduction of special functions   in one or more narrow areas of the table.   12 Cooktop according to any one of   Claims 1 to 11, characterized in that the switching contacts S of the insertion members (8)   established as a kind of pushbuttons short-circuit, connected in series with decoupling diodes D lines of a matrix of conductors functional at points crossing.   13 hob according to claim 12, characterized in that the "abscissa lines" of the matrix of conductors are connected to the outputs, and the "ordinate lines" to the inputs of a modular microprocessor P. p. 14 hob according to claim 13, characterized in that, on the inputs of the modular microprocessor p P, resistance elements are   intercalated on the supply lines.   Cooktop according to any one of   13 or 14, characterized in that on the inputs of the modular microprocessor / u P, the lines   brought are set to a reference potential across elements of resistance.   Cooktop according to claim 1, characterized in that the control device for the heating cooking is placed in a dish-like container which is fixed, preferably removably, to the boundary plate which closes down the table and its heaters. 17 hob according to claim 16, characterized in that the container has an upper protective cover and there is between it and the boundary plate a cavity opposing   to the action of heat and / or a refractory layer.   Cooktop, particularly according to claim 1, characterized in that push-button switches (191) which are attached, preferably by welding to printed circuits, are provided for the operating members (19). on a branch plane (192) spaced from a service board (17) and penetrating through their shank (19) into openings (193) of said service board (17) being actuable by buttons in elastic caps (194) embedded in said openings.