FR2550680A1 - INSTALLATION FOR THE PRESELECTION OF TIME AND HEATING POWERS FOR COOKERS - Google Patents

Abstract

INSTALLATION FOR PRESELECTION OF HEATING TIMES AND POWER FOR RANGES WITH USE OF AN ELECTRONIC SWITCHING DEVICE INCLUDING A TIMER AND CONTROL UNITS FOR THE CHOICE AND CONTROL OF THE POWER. THE ELECTRONIC SWITCHING DEVICE ES INCLUDES CONNECTIONS FOR THE INTRODUCTION OF OPERATING VARIANTS THAT CAN BE PROGRAMMABLE IN TIME AND THIS ELECTRONIC SWITCHING DEVICE ES IS ASSOCIATED WITH AN AUTOMATIC SELECTION BODY WITH CONTACTS THAT CAN BE CONNECTED TO THESE SWITCHING DEVICES PROVIDED FOR. ELECTRONICS FOR THE INTRODUCTION OF THESE VARIANTS.

Description

Installation for pre-selection of heating times and powers

  The present invention relates to an installation 5 for preselecting cooking times and powers for stoves with the use of an electronic switching device comprising a timer and control units.

  for the choice and control of the power.

  In electrically operated ovens and cooking stations as well as in gas-fired ovens and cooking stations, preselection of the respective heating zones and heating powers is generally performed manually. Various approaches for automation of this preselection however are also already known for example, so it belongs

  for a long time in the state of the art to use clocks for presetting the end of a cooking process and its duration and to order the execution.

  At the same time, the choice of heating elements and the selection of a temperature or power must be made by hand. However, it is also known to automate partially or completely the heating and / or cooking processes using appropriate control systems Depending on the specific criteria of a product to be cooked, the choice of a cooking program is made which will be executed automatically by a program control device programmed accordingly in connection with the

  power units of the stove.

  Such automatic control devices for the heating and / or cooking processes are also used for conventional radiation heating with and

  air circulation only for microwave heaters.

  Like heating modes and areas of use

  Because different devices assume and require different programs, it is necessary to use electronic control units programmed differently depending on the case.

  From this state of the art, the object of

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  the invention is to realize for the preselection of the times and powers of heating stoves, an installation that allows many variations of use without requiring significant adaptation means A facility that meets these conditions is characterized according to the according to the invention, the electronic switching device comprises connections for the introduction of time-varying functional variants and the electronic switching device 10 is associated with an automatic selection member with contacts that can be connected to these connections. provided in the electronic switching device for the introduction of

these variants.

  An installation designed according to the invention is therefore characterized by the fact that it allows the use of a universal electronic switching device which, with external connections, can be adapted simply and inexpensively to any conditions. By virtue of this combination of the electronic switching device and the automatic selection member, the electronic switching device can be used with a simply modified automatic selection member, for example for a radiant-only heating furnace or for a microwave-only oven, but also for an oven with both modes of operation. Moreover, the possibility of

  hotplate connection also remains open.

  In a preferred embodiment, the installation according to the invention is characterized in that the automatic selection member, in addition to the contacts for the connections provided in the electronic switching device for the introduction of operating variants. , has contacts for connection to control units for

  the choice and control of the power of the stove.

  The automatic selection member, in addition to the introduction of appropriate information in the electronic switching device, thus allows the desired connection to be made.

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  heating elements and other functional elements By means of judicious connections, it is possible to obtain advantageous operating combinations and to exclude, in a known manner, the

  adverse and dangerous operating combinations.

  Depending on the use and the execution step, different embodiments are possible for the automatic selection member. For example, it is possible to use a rotary switch comprising a certain number of contacts.

  cam-controlled or key introduction mechanism.

  If, in a particular use case, for example in a microwave-only oven, some functions are omitted and others generally used, accordingly selected bridge networks and open paths

  can make the connection of the electronic switching device.

  A simple embodiment with respect to connections and cabling can be obtained by making the connections for the introduction of alternative operating modes in the form of parallel inputs for binary coded switching states of the contacts of the device. of

automatic selection.

  It is also possible to make the automatic selection member in the form of an element directly forming part of the control unit for the choice and control of the powerful so that the electronic switching device can also be advantageously

used in this combination.

  In addition to the control function of the electronic switching device for the various heating and / or cooking processes, it is also possible, by indicating the setting values, to execute a 12-hour display and / or a short display. duration in connection with an acoustic signal. A separate actuator may advantageously be provided in connection with a timed organ by means of which special time introductions may be provided.

  performed according to the automatic selection member.

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  The invention will be better understood using the

  description of embodiments taken as examples but

  non-limiting, and illustrated by the accompanying drawing, in which z Figure 1 shows a detail of a dashboard for a universal range; Figure 2 shows a detail of a dashboard for a microwave cooker; Figure 3 shows the connections of an automatic selector switch and a power selector switch; Figure 4 shows a mounting of a universal baking oven with radiant heating and microwave heating. FIG. 1 shows the panel 1 for operating and displaying an electronic switching device with a timer. Depending on the operating mode that can be preselected by the automatic selector switch 2, it is possible to introduce by the keyboard 3 and the button rotating 4 of a bit generator, time values, power values for the heating and / or cooking process or program selection criteria The introduction of time is for example necessary for the predetermination of the time. duration and completion of a cooking process It is possible to correct times of 12 hours and to introduce shorter time periods For microwave operation, the keys are associated with three different heating powers by micro With the actuation of each of these keys, it is possible, by means of the rotary knob 4, to introduce the period of time provided for the power Associated with the heating system By means of a start button 5 on the dashboard, it is possible to

route the microwave program.

  In the position shown, the automatic selector switch 2 is in the zero position. This means that conventional manual preselections of the baking process can only be performed to start the baking oven.

  with radiant heating, the switch is

  power selector 6 Starting from the zero position, it is possible to choose between normal cooking, roasting, roasting with air circulation and cooking with air circulation. The corresponding symbols are successively carried in the counter-clockwise direction. 6. By appropriately setting the automatic selector switch 2, the electronic switching device can be used to perform a simple time control for the baking oven BO, for the pyrolysis self-cleaning SR, for the micro-operation M for a BA automatic cooking program and for the limited-time control of the KO cooking stations (The switching switches the control of the power of the cooking plates are not shown in FIG. possibly 9

  connected as a result of the power selector switch 6).

  In addition to the operation of the cooking stations, it is also possible to start the cooking oven without involving the electrical switching device The self-cleaning, the microwave operation and the automatic cooking require on the other hand the connection to this equipment. electronic switching device The correct switching technique ensures that during the execution of automatic roasting or self-cleaning, manual input into the oven functions remains excluded or not taken into account. against, during microwave operation, it is possible via the power selector switch 6 to manually connect in addition to the

  radiant heating and operation with air circulation.

  As already mentioned, the start of the microwave program is performed by pressing the key 5; this bet

  en route is indicated by a signal lamp 7.

  The execution of the microwave program can be interrupted by turning the automatic selector switch 2, preferably

  by returning it from the microwave position to the zero position.

  Figure 2 shows a maneuvering board and

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  for displaying an electronic switching device for operation only by microwaves By means of the keyboard 3, power values are thus simply introduced and simultaneously by the rotary knob 4, additional time periods are introduced for these devices. power values The indication of the values entered and to be obtained is carried out at

  means of the display device The successive figures I b 4 are associated in order with the various pushbuttons 3.

  In order to start the microwave program, the start key 5 is used and the stop key 8, which is necessary in this case, is interrupted. In the lower part of the control and display panel, the unrepresented feed members for the power stages. In FIG. 3, a partial circuit diagram of the contact paths of the power selector switch 6 and of the automatic selector switch 2 can be seen. The contacts 14, 15, 16 of the automatic selector switch 2 are used to introducing time-controlled modes of operation in the switching device

  electronics The references L 1, L 2 and L 3 denote the connections of the phases of the power supply system.

  A detailed assembly for controlling the energy of a baking oven, with conventional radiant heating and

  with microwave heating is shown in Figure 4.

  The SH portion bordered by a phantom line contains the operating devices for radiant heating, the heating resistors R 1 and R 2 providing the hearth heat and the resistance R 3 the heat of vault or the radiation for the roasting The switching is carried out optionally by the contact paths a of the automatic selector switch 2 and by the contact paths f of the power selector switch 6 The temperature setting for the operation of the cooking oven is carried out 35 TH adjustable thermostat SR temperature controllers limit temperature during self-cleaning operation The BA controller is

  associated with the automatic cooking device.

  For operation with air circulation, a fan is driven by the motor M 3. The motor M 4 controlled by the temperature is connected to a cooling fan. At the position of the contacts at 2.3 and 4.5, shown in FIG. 4, the electronic switching device ES is connected to the radiant heating SH. If the automatic selector switch 2 is turned (FIG. To position it in the position corresponding to the microwave operation, these two contacts has 2,3 and 4,5 switch so as to turn on the microwave heating device MH bordered by the dash line. Maneuvering systems necessary for switching on the magnetron Mg, this microwave heating device MH comprises the necessary door contacts tl, t 2, t 3,4 as well as safety devices if and a temperature controller The magnetron Mg is excited in known manner by a relay E controlled via the electronic switching device ES and the corresponding contact e It is only when the oven door is closed and therefore to the position shown e door security systems, that the relay D can react and thus allow the power supply of the magnetron control unit The microwave antenna is controlled by the motor M 1 and the magnetron fan by With the contacts 14, 15, 16, the contacts 14, 15, 16 can in principle be introduced into the electronic switching device ES, from the angular position of the automatic selector switch 2, the automatic function to be executed. the association

next coded binary.

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  Position A Operation S 52 53 O manual OOO BA automatic roasting OO 1 BO automatic cooking oven O 1 O SR self cleaning OI KO cooking plate by the IOOM microwave clock 1 OI The introduction into the electronic switching device ES of the start-up order for execution of the microwave program is effected by the contact st The radiant heating unit SH is activated according to the indication of the time introduced into the electronic switching device L ' electronic switching unit ES orders the corresponding unit in a timely manner

  via the uk switch.

  By optionally using bridge B, one can

  will also activate the electronic switching device for a display of a period of 12 hours.

  When the microwave unit MH is connected to the electronic switching device ES via the contacts 2.3 and 4.5 of the automatic selector switch 2, it is possible, by means of the heating device by radiation (SH), to perform microwave heating with or without radiation

hot air circulation.

  By the structure of the circuit diagram according to FIG. 4, it can be seen that the electronic switching device ES, by means of simplified wiring for the execution of variants of the operating modes, can be associated with a heating oven only by micro In the case of a microwave oven, the automatic selector switch 2 can be omitted in place of the contacts 14, 15, 16 according to the table. the aforementioned association, the automatic selection device respectively requires a bridge network in the area of the connection point for the contact a 14 and the contact a 16 As, due to the absence of the automatic switch-selector, it does not can not be brought back to the zero position either, it is particularly necessary to use a stop button with the contact sp of the stop switch 6 t. In a radiant heating cooking oven, the automatic selector switch is required again, but for switching on the electronic switching device ES only with two contacts, namely the contacts 15 and 16. The first input of the device

  According to the abovementioned association table, the electronic switching system ES requires only a "LOG" zero (excl. 14).

  It should be emphasized that in the exemplary embodiment according to FIG. 4, the inputs of the electronic switching device are wired in order to be technically more comprehensible.

  generally known switching are advantageously used.

  At the outputs Oa and Od of the electronic switching device 20 ES there appears a zero analog voltage and a zero digital voltage. Furthermore, a separate operating member (key S) is provided in connection with a time delay means by means of which special time introductions. can be executed according to the automatic selection member (automatic switch-selector 2) It should be noted, moreover, that the control buttons 3 and 4 as integral parts of the electronic switching device

  are not shown in detail in Figure 4.

Claims (10)

  1 Installation for the preselection of cooking times and heating powers with the use of an electronic switching device comprising a timer and control units for the selection and control of the power, characterized in that the ES electronic switching device comprises connections for the introduction of time-programmable variants of operation and at this electronic switching device 10 (ES) is associated an automatic selection member with contacts that can be connected to these connections provided for in FIG.   the electronic switching device (ES) for the introduction of these variants.   2 Installation according to claim 1, characterized in that the automatic selection member, in addition to the contacts (a 14, 15, 16) for the connections provided in the   electronic switching device (ES) for the introduction of operating variants, comprises contacts (al to a 13) for connection to the control units for the selection and control of the power of the range.   3 Installation according to claim 1 or 2, characterized in that the automatic selection member   is in the form of a rotary switch (2) having a number of cam-controlled contacts (al C to 16).   4 Installation according to claim 1 or 2, characterized in that the automatic selection member is formed as a key introduction mechanism. 5 Installation according to any of the   Claims 1 to 4, characterized by the fact that the   Automatic selection includes bridge networks.   6 Installation according to any of the   claims 1 to 5, characterized in that the   connections for the introduction of variants of operation of the electronic switching device ES are parallel inputs for binary coded switching states of the 14 2550680   contacts (a 14, a 15, a 16) of the automatic selection member.   7 Installation according to any of the   claims 1 to 6, characterized by the fact that the   Automatic selection is an integral part of the control unit for power selection and control (6, fl to f 6). 8 Installation according to any of the   Claims 1 to 7, with an automatic selection member, characterized in that it is used as a multipurpose or universal control device.   9 Installation according to any of the   claims 1 to 8, characterized in that the   switch (uk) of the electronic switching device (ES) is optionally provided for connection of a heating unit, for example a microwave heating device or for the connection of another heating unit, by   example of the heating elements of the baking oven.   Installation according to Claim 9, characterized in that the switch (uk) is provided for automatic switching from a first heating mode to a second mode different from the first.   11 Installation according to any of the   preceding claims, characterized by the fact that   comprises at least one acoustic preference signaling device, which indicates completion of the processing according to   the selected operating mode.   12 Installation according to any of the   preceding claims, characterized by the fact that   separate actuator (key S) is provided in connection with a timed organ by means of which time inputs   Special operations can be performed according to the automatic selection device (automatic selector switch 2).