JP4977997B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker having a plurality of heating means.

  The structural example of the conventional common cooking-by-heating machine is shown in FIG. 4 and FIG.

  FIG. 4 shows the appearance of the heating cooker. The left IH heater 3, which is a heating means by induction heating, the right IH heater 6, a roaster heater 4 which is an electric heater, and a radial heater 5 are configured.

As shown in FIG. 5, the load current of the device is distributed to the switch 1 and the switch 2 in order to ensure the durability of the switch and to use a cheaper and smaller switch. . The switch 1 supplies current to the left IH heater 3 and the roaster heater 4 , and the switch 2 supplies current to the right IH heater 6 and the radiant heater 5. The maximum heating power of each heating means is 3 kW for the left IH heater 3, 2 kW for the right IH heater 6, 1.2 kW for the radiant heater 5, and 1.5 kW for the roaster heater 4. Moreover, the ratings of the switch 1 and the switch 2 are each 16A, and when a 200V commercial AC power source is used, the left IH heater 3 and the roaster heater 4 can be up to 3.2 kW (= 16A × 200V), and the right IH heater 6 And up to 3.2 kW (= 16 A × 200 V) can be used with the radiant heater 5. However, the IH heater can control the current value to lower the thermal power from the system, but the roaster heater 4 and the radiant heater 5 also adjust the thermal power by turning on / off the maximum thermal power when lowering the thermal power. It is what. Moreover, since the total power is limited to 4.8 kW in consideration of the wiring load, the entire device has a limitation that the radiant heater 5 and the roaster heater 4 cannot be used at the same time. The control at this time is shown in FIG. In Case 1, the left and right IH heaters are used at maximum heat. However, because the total power regulation is working, the left IH heater 3 is 2.8 kW. Next, in case 2, when the radiant heater 5 is used, the current flowing through the switch 1 and the switch 2 is set to be less than the rated value of each switch, and the total power is set to 4.8 kW. Restricted to

  The following Patent Documents 1 and 2 refer to various ways of regulating the total power of the equipment.

In particular, Patent Document 2 describes a method for prohibiting heating of one of a plurality of heating means.
JP-A-9-260056 JP 2005-158329 A Japanese Patent Laid-Open No. 7-272847

However, in the above-described conventional configuration, even when the use of the right IH is stopped as shown in Case 3, the entire device can be used up to 24A, but the roaster and the radiant cannot be used simultaneously. When the left IH and the left IH are used at the same time, the thermal power of the left IH is limited although the power consumption of the entire device is sufficient.

  This invention solves the said subject, and aims at providing the heating cooker which can obtain the thermal power as a user desires as much as possible.

In order to solve the above-mentioned conventional problems, the cooking device of the present invention controls the first and second IH heaters, the roaster heater, the radiant heater, the heating stop and the heating start of each heater, and is used. A control means for operating each heater with a thermal power setting determined by a person, and one end connected to a commercial AC power supply and the other end connected to the first IH heater to close the current of the commercial AC power supply. A first switch for supplying power to one IH heater, and one end connected to one end of the first switch and the other end connected to the second IH heater to close the current of the commercial AC power supply. a second switch for supplying a second IH heater, wherein the radiant heater is supplied with the commercial AC power source from said second switch, said first A H maximum input current and the roaster rated current greater than the cooker sum of the first switch of the input current of the heaters of the heater, the roaster the commercial AC power source to the first or the supply of the heaters the current path switching means for switching whether to perform from any switch of the second switch is provided, wherein the current path switching means, wherein the time of heating the second IH heater, the commercial from the first switch to said roaster heater performs the supply of the AC power source, the second at the time of heating stop the IH heater, the second of said first and said second switch performs the supply of the commercial AC power to the roaster heater and the radiant heater from the switch It is made to operate so as to be below the rated current.

  As a result, it is possible to obtain the maximum thermal power as a device in all possible combinations.

  According to the heating cooker of the present invention, it is possible to obtain an easy-to-use heating cooker that can determine the current distribution inside the device so as to always approach the thermal power required by the user.

  Moreover, according to the structure of 2nd invention, a heater is insulated from an apparatus at the time of use stop of an apparatus, and the safe cooking device which can be operated safely at the time of a failure can be obtained. is there.

  In addition, according to the configuration of the third aspect of the invention, the connection of the current path switching means is switched according to the change in the heating power setting of the heating means determined by the user, so that the heating power required by the user is always obtained. It can be brought closer.

Further, according to the configuration of the fourth invention, the operation of the current path switching means, by the thermal switching means, by which is to be executed when that stops energization of the heating means, switching hands The durability of the contact of the relay of the stage can be improved.

  Further, according to the configuration of the fifth aspect of the invention, an inspection circuit for confirming whether or not the current path switching by the current path switching means is executed is provided, and switching is performed as instructed by the current path switching means. If not, the control means stops the energization of the heating means, so that when the equipment breaks down, the operation of the equipment can be stopped and used safely.

The first invention includes first and second IH heater, a roaster heater, radiant heater and, the heaters in the controls the pressurized heat stop and start of heating the heater, the heating power setting established by the use for business And a control means for operating the first AC power source, and one end connected to the commercial AC power source and the other end connected to the first IH heater and closed to supply a first current of the commercial AC power source to the first IH heater. And the other end is connected to one end of the first switch, and the other end is connected to the second switch. The radial heater is supplied with the commercial AC power from the second switch, and the first switch a sum of the maximum input current and the input current of the roaster heater IH heater of the first switch rated current greater than the cooker, the roaster heating Provided a current path switching means for switching whether to perform the commercial AC power supply to over from any switch in the first or second switch, said current path switching means, during the heating of the second IH heater The commercial AC power is supplied from the first switch to the roaster heater, and when the heating of the second IH heater is stopped, the commercial AC is supplied from the second switch to the roaster heater and the radiant heater. By supplying power and operating it so that it is less than the rated current of the first and second switches, it is possible to determine the current distribution inside the device so that it always approaches the thermal power required by the user. It is possible to obtain a cooking device that is easy to use.

The second invention is the first invention, comprising a thermal power switching means that opens and closes respectively the current supply to the roaster heater and the radiant heater by the control unit, said thermal switching means, said first and said in use stop of the appliance by a second switch is connected to the other input of the commercial AC power supply input for opening and closing one, the heater is insulated from the device, to be operated safely in the event of failure It is possible to obtain a safe cooking device that can be used.

  According to a third aspect of the present invention, in the second aspect, the connection of the current path switching means is switched in accordance with a change in the heating power setting of the heating means determined by the user, so that the thermal power required by the user is always obtained. It can be brought close to.

A fourth aspect based on the third aspect, the switching of the current path of said current path switching means, by the thermal switching means is executed when that stops energizing the heating means is connected to the current path By doing so, the durability of the contact of the relay of the switching means can be improved.

Fifth invention, in the third aspect, the provided test circuitry to determine whether switching of the current path is performed by the current path switching means, has switched is performed as instructed the current path switching means If not, by that so as to stop the power supply to the heating means by the control means, when the device has failed to stop the operation of the device, in which can be used safely .

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a first embodiment of the present invention.

In FIG. 1, a switch 1 that opens and closes a 200 V commercial AC power supply 8 supplies current to the left IH heater 3 and the roaster heater 4 . The switch 2 supplies current to the right IH heater 6 and the radiant heater 5 . The operation will be described with reference to FIG. In Case 1, when heating is started with the left IH heater 3 (maximum 3 kW) and the right IH heater 6 (maximum 2 kW), the switch 1 can be energized up to 16A, but the total power regulation of the equipment is implemented. Therefore, the left IH heater 3 is limited to 14 A (2.8 kW) so that the total becomes 4.8 kW. Next, when the radiant heater 5 (6A, 1.2 kW) is used in the case 2, the left IH heater 3 is regulated to 10A and the right IH heater 6 is regulated to 8A. As the total power regulations. Further, when the use of the right IH heater 6 in the case 3 is stopped, the left IH heater 3 can be used up to a maximum heating power of 15 A (3 kW). In this state, the use of roaster heater 4 as case 4, the a current path to the original switch 1 side and e replacement Ri switching at the relay is a current path switching unit 9, the same as Rajientohita 5, Current is supplied from the switch 2 side different from the left IH heater 3. As a result, if the current path is not switched, the left IH heater 3 can obtain a thermal power of 10.5 A (2.1 kW) instead of a thermal power of 16 A-7.5 A = 8.5 A (1.7 kW). Can get up to.

(Embodiment 2)
In FIG. 1, thermal power opening / closing means 10 and 11 are provided, and a predetermined thermal power is obtained by ON / OFF control of the roaster heater 4 and the radiant heater 5 in accordance with instructions from the control means 7, respectively. At this time, the thermal power opening and closing means 10 and 11 are connected to the other ends of the heaters connected to the switches 1 and 2, so that when the power supply is stopped, the heaters are completely electrically connected. It is in an insulated state.

(Embodiment 3)
In the third embodiment of the present invention, as shown in FIG. 2, the control means 7 determines the optimal current distribution each time the user changes the thermal power setting according to the user's operation. The current path switching means 9 is instructed to set an optimal current path.

(Embodiment 4)
In the fourth embodiment of the present invention, the path switching operation by the current path switching means 9 is performed by the heating power switching means 10 or 11 when the heaters of the roaster heater 4 and the radiant heater 5 are stopped. wear rough arcing and contact with the contact normal Ru example replacement disconnect the contacts of the relay in the current application, but the contact of the relay constituting the current path switching unit 9 by switching when no current flows It is prevented from being worn out by arc discharge.

(Embodiment 5)
In the fifth embodiment of the present invention, by providing an inspection circuit 12 as shown in FIG. 3, it is confirmed whether the current path switching means 9 is always operating correctly, and heating is stopped if the operation is incorrect. I am doing so.

  Specifically, it is realized by measuring the voltage between the relay contacts constituting the current path switching means 9 and judging the output by the control means 7.

  Operation | movement of the correction | amendment means of this invention is applicable to the heating cooking appliances which have a some heating means in general.

The block diagram of the heating cooker in Embodiment 1, 2, 3, 4 of this invention The figure which shows operation | movement of the heating cooker in Embodiment 1, 3 of this invention. Circuit diagram of Embodiment 5 of the present invention External view of a conventional cooking device Block diagram of a conventional cooking device The figure which shows operation | movement of the heating cooker of a prior art example

1 switch 2 switch 3 left IH heater 4 roaster heater 5 radiant heater 6 right IH heater 7 control means 8 commercial AC power source 9 current path switching means 10 thermal power switching means (roaster heater side)
11 Thermal power switching means (roaster heater side)
12 Inspection circuit

Claims (5)

First and second IH heaters, roaster heaters, radiant heaters, and control means for controlling the heating stop and heating start of each of the heaters, and operating each of the heaters with a thermal power setting determined by a user; A first switch for supplying the current of the commercial AC power source to the first IH heater by closing one end connected to the commercial AC power source and the other end connected to the first IH heater; A second switch that is connected to one end of the first switch and supplies the current of the commercial AC power to the second IH heater by closing the other end connected to the second IH heater. The radial heater is supplied with the commercial AC power from the second switch, and the maximum input current of the first IH heater and the roaster heater And the sum of the input current is a rated current greater than the cooker of the first switch, for supplying the commercial AC power to the roaster heaters from any switch in the first or the second switch the current path switching means for switching is provided or the current path switching means, wherein the time of heating the second IH heater, performs the commercial AC power supply from the first switch to the roaster heater, the second of the time the heating is stopped the IH heater, so as to operate as a less than the rated current of the second of said first and said second switch from the switch performs the supply of the commercial AC power to the roaster heater and the radiant heater Cooking cooker. Comprising a thermal switching means for opening and closing respectively the current supply to the roaster heater and the radiant heater by the control unit, said thermal switching means, the commercial AC power source input to said first and said second switches to open and close one The heating cooker according to claim 1 connected to the other of the above. The cooking device according to claim 2, wherein the connection of the current path switching means is switched in accordance with a change in the heating power setting of the heating means determined by the user . Switching the current path of said current path switching means, by the thermal switching means, cooking device according to claim 3 which is adapted to execute when that stops energizing the heating means is connected to the current path . The test circuit to determine whether switching of the current path by the current path switching means is being executed is provided, when the switch as directed by the said current path switching means is not carried out, the heating means by the control means The heating cooker according to claim 3, wherein the energization of is stopped.