JP2007250240A - Composite heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite heating cooker which ensures an output level not causing inconvenience from a viewpoint of practical use, even if a radiant heater relay and a roaster heater relay are melted together, by assuring power consumption within a power switch contact capacity in energizing an induction heating means. <P>SOLUTION: The composite heating cooler connects a left induction heating means 3 to either contact of a 2-contact power switch 2, connects a right induction heating means 4 to the other contact, and then connects a radiant heater 5 and a roaster heater 6 (via a common relay contact 7). A control means 16 recognizes that a common relay contact 7, a radiant relay contact 8 and a roaster relay contact 9 have been all melted and then inhibits the energization of the right induction heating means 4. Even if selective control the energization of the radiant heater 5 and roaster heater 6 can not be made, the controller controls power consumption within a single contact capacity in the power switch 2 and assures an output level avoiding inconvenience through an available left induction heating means 3 from a viewpoint of practical use. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combined cooking device used in a home kitchen or a commercial kitchen.

  In recent years, combined heating cookers with multiple induction heating means, in addition to the radiant heater and the seasoning heater for grilled fish and grilled foods, have been recognized for their excellent features of safety, cleanliness, and high efficiency, and have become widespread. (For example, refer to Patent Document 1).

  Then, it is common to select and use one of a radial heater and a fish heater or a seed heater for grill cooking (see, for example, Patent Document 2).

  Further, there is a radiator heater and a sheathed heater, each of which is energized and controlled by a relay to detect contact welding of the relay (see, for example, Patent Document 2).

Further, in addition to the radiant heater and the sheathed heater, an induction heating means is connected to the same contact of the power switch (for example, see Patent Document 3).
JP 2001-196153 A JP 11-149974 A JP 2000-173756 A

  However, in the conventional configuration, the current applied to the power switch falls within the contact capacity range when the radial heater and the induction heating means are energized simultaneously, or the sheathed heater and the induction heating means are energized simultaneously. When the contact of the relay for energization control and the relay for the energization control of the sheathed heater are welded together, if the induction heating means is energized, the current applied to the power switch may exceed the contact capacity range Had.

  The present invention solves the above-described conventional problems, and two or more heating means for energization control by a relay and a heating means for energization control by a semiconductor element are connected to the same contact of a power switch, and the energization control is performed by a relay. In a configuration in which energization control is performed by selecting from two or more heating means, it is an object to inhibit or suppress energization to the heating means that detects relay contact welding and controls energization with a semiconductor element.

  In order to solve the above-described conventional problems, the heating cooker of the present invention is configured such that two or more heating means that are energized and controlled by a relay and all currents applied to the heating means that are energized and controlled by a semiconductor element are applied to the power switch. The means is selected from two or more heating means that are energized and controlled by the relay, and energized to the heating means that is energized and controlled by the semiconductor element based on an input signal from the relay contact welding detecting means. Is prohibited or suppressed.

  As a result, the control means, based on the input signal from the relay contact welding detection means, the relays are contact welded together in two or more heating means controlled by the relay, and the electrification control cannot be selectively performed. It is detected that the current is in an energized state, and energization of the heating means that controls energization by the semiconductor element is prohibited or suppressed.

  The heating cooker of the present invention, even when the relay is welded together and the heating means connected to the relay cannot be selectively energized, it is contained within the contact capacity range of the power switch, or practically, Other heating means can be energized and controlled so as to ensure an output level that is not inconvenient.

  According to a first aspect of the present invention, there is provided a power switch, a plurality of heating means including two or more heating means that are energized and controlled by a relay, and a heating means that is energized and controlled by a semiconductor element, and a relay contact that detects contact welding of each of the relays A welding detection means; and a control means for controlling energization of each of the plurality of heating means, wherein all of the applied currents of the plurality of heating means are applied to the power switch, and the control means determines the applied current of the power switch. The semiconductor element is controlled based on an input signal from the relay contact welding detection means and selected from two or more heating means that are energized and controlled by the relay so as to keep within a contact capacity range. By adopting a configuration that prohibits or suppresses energization to the heating means that controls energization, the control means selects and controls energization from two or more heating means that are energized and controlled by a relay. In addition, the applied current of the power switch including the applied current to the heating means energized and controlled by the semiconductor element is suppressed within the contact capacity range, and the total power of the entire device is set to the indoor wiring capacity (for example, 5.8 kW, 4.8 kW). , Or 4.0 kW), the energization to each heating means can be controlled. If both the relays are welded together and cannot be selectively controlled, and both are in the energized state, the controller means that both relays are welded based on the input signal from the relay contact welding detection means. The current applied to the power switch is kept within the contact capacity range and the total power of the entire device is wired indoors by prohibiting or suppressing the energization of the heating means that controls energization with the semiconductor element. It can be kept within the capacity range.

  According to a second aspect of the present invention, in particular, in the first aspect, the power switch is composed of two contacts, and one contact is composed of two or more heating means controlled by a relay and a plurality of heating means controlled by a semiconductor element. The other contact is connected to the other contact of the plurality of heating means that are energized and controlled by the semiconductor element, and connected to the other contact based on an input signal from the relay contact welding detection means. Control is performed by prohibiting or suppressing energization to a plurality of heating means that are energized and controlled by the semiconductor element connected to the one contact so that the energization amount to the heating means that is energized and controlled by the semiconductor element is prioritized. Based on the input signal from the relay contact welding detection means, the means suppresses the current applied to the power switch within the contact capacity range when detecting that both relays are welded together, and the entire device In the range where the total power can be accommodated in the indoor wiring capacity, the heating means that controls the energization with the semiconductor element connected to the other contact point is energized with the semiconductor element so that an output level that is not inconvenient in practical cooking can be secured. Energization of the plurality of heating means to be controlled can be prohibited or suppressed.

  According to a third aspect of the present invention, there are provided a power relay that opens and closes based on an input signal from a power switch, a plurality of heating means including two or more heating means that are energized and controlled by a relay, and a heating means that is energized and controlled by a semiconductor element, and the relay Relay contact welding detection means for detecting each contact welding and control means for controlling energization of each of the plurality of heating means, and all the applied currents of the plurality of heating means are applied to the power relay, and the control The means is selected from two or more heating means that are energized and controlled by the relay so as to suppress the applied current of the power relay within the range of contact capacity, and from the relay contact welding detection means Based on the input signal, the control means is configured to prohibit or suppress energization to the heating means that controls energization with the semiconductor element, so that the control means performs two or more energization control with a relay. Select from the heating means and control the energization to keep the applied current of the power relay including the applied current to the heating means controlled by the semiconductor element within the contact capacity range, and the total power of the entire device indoors Energization of each heating unit can be controlled so as to be within a range of wiring capacity (for example, 5.8 kW, 4.8 kW, or 4.0 kW). If both the relays are welded together and cannot be selectively controlled, and both are in the energized state, the controller means that both relays are welded based on the input signal from the relay contact welding detection means. The current applied to the power relay is kept within the contact capacity range and the total power of the entire device is wired indoors. It can be kept within the capacity range.

  According to a fourth aspect of the invention, in particular, in the third aspect of the invention, based on an input signal from the relay contact welding detection means, energization to the heating means controlled by the semiconductor element is prohibited and the contact of the power relay is opened. By doing so, the control means detects that both relays are welded based on the input signal from the relay contact welding means, and prohibits energization to the heating means that controls energization by the semiconductor element. In addition, while keeping the applied current of the power relay within the contact capacity range, the contact of the power relay can be opened to cut off the power to the heating means controlled by the relay to improve the safety of the device.

  In particular, in the third or fourth invention, the fifth invention is constituted by two power supply relays, and one power supply relay has two or more heating means controlled by a relay and a plurality of heating means controlled by energization by a semiconductor element. The other power relay is connected to the other power relay, and the other power relay is connected to the rest of the plurality of heating means that are energized and controlled by the semiconductor element, and based on the input signal from the relay contact welding detection means In order to give priority to the energization amount to the heating means that controls the energization by the semiconductor element connected to the semiconductor device, the energization to the heating means that controls the energization by the semiconductor element connected to the one power relay is prohibited or suppressed. Thus, when the control means detects that the relays are welded together based on the input signal from the relay contact welding detection means, the control means converts the applied current to the power relay to the contact capacity. As long as the total power of the entire device is within the indoor wiring capacity, the heating means that controls the energization with the semiconductor element connected to the other contact ensures an output level that is not inconvenient for practical cooking. As can be done, energization to a plurality of heating means controlled to energize by the semiconductor element can be prohibited or suppressed.

  In a sixth aspect of the invention, in particular, in the first to fifth aspects of the invention, the energization control is performed by two or more relays in each of the heating means for energization control by the relay, and the control means is an input signal from the relay contact welding detection means. Based on the above, when all the relays corresponding to each of the heating means are detected as contact welding, the energization control by the relay is performed by prohibiting or suppressing the energization to the heating means controlled by the semiconductor element. In each of the heating means, the energization control is performed by two or more relays to reduce the frequency with which the relay contact is welded and erroneously energized to the heating means, and the control means receives an input signal from the relay contact welding detection means. Based on the above, when it is detected that all the relays corresponding to each heating means are contact welding, the semiconductor device is prohibited or suppressed from energizing the heating means controlled by the semiconductor element, It is possible to reduce the frequency of prohibiting the energization of the heating means is energized by the element.

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

(Embodiment 1)
FIG. 1 is a block diagram of a combined cooking device according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the combined cooking device in the present embodiment includes a left induction heating unit 3 having a maximum of 3 kW, a right induction heating unit 4 having a maximum of 2.5 kW, a radial heater 5 having a 1.2 kW, and 1. Four heating means such as a 5 kW roaster heater 6 are provided.

  The AC 200 V commercial power supply 1 is connected to the left induction heating means 3, the right induction heating means 4, and further to the radial heater 5 and the roaster heater 6 (via the common relay contact 7) via the power switch 2. The power switch 2 has two contacts with a rating of 1.7 A. One contact is connected to the left induction heating means 3, and the other contact is connected to the right induction heating means 4, the radial heater 5, And the roaster heater 6 is connected.

  The left induction heating means 3 and the right induction heating means 4 are respectively composed of a left heating coil 3a, a right heating coil 4a, a left inverter 3b, and a right inverter 4b. The left inverter 3b and the right inverter 4b are commercial power supplies. After the input from 1 is full-wave rectified and smoothed, a high frequency current of several tens of kilohertz is generated using a semiconductor element and supplied to the left heating coil 3a and the right heating coil 4a, respectively, and left heating coil 3a and right The pot magnetically coupled to the heating coil 4a is induction-heated.

  One of the radial heater 5 and the roaster heater 6 is connected to the power switch 2 through the common relay contact 7, and the other is connected to the commercial power supply 1 through the radial relay contact 8 or the roaster relay contact 9. When the energization of the radial heater 5 and the roaster heater 6 is turned off, the common relay contact 7, the ragent relay contact 8, and the roaster relay contact 9 are all opened and either the energization of the ragent heater 5 or the roaster heater 6 is performed continuously. In the case of intermittent energization, the common relay contact 7 is closed and the radical relay contact 8 or the roaster relay contact 9 is controlled to open and close.

  The left input means 10 includes a left turn / on key 10a, a left up key 10b, and a left down key 10c. The left input means 10 instructs the left induction heating means 3 to start / stop energization or change the heating power.

  The right input unit 11 includes a right turn / on key 11a, a right up key 11b, and a right down key 11c, and instructs the start and end of energization to the right induction heating unit 4 and a change in heating power.

  The middle input means 12 includes a radial off / on key 12a, a la / ro up key 12b, a la / lo down key 12c, and a roaster off / on key 12d. Instruct.

  The common relay contact 7, the radial relay contact 8, and the roaster relay contact 9 have a common relay contact welding detection means 13, a radial relay contact welding detection means 14, and a roaster relay contact welding detection means 15, respectively. Detects contact welding and outputs a signal.

  The control means 16 controls these constituent means in an integrated manner.

  About the composite heating cooker comprised as mentioned above, the operation | movement and an effect | action are demonstrated. For the left induction heating unit 3, the control unit 16 performs a left initial mode in which the output of the heating unit is turned off, a thermal power “heat retention”, a thermal power “1” to a thermal power “7” (= 2.0 kW), a thermal power “strong” ( = 2.5 kW) · Heating power "3 kW" (= 3 kW) has two modes of the left heating mode that turns on the output of the heating means with 10 steps of thermal power setting, input signal from the left turn / on key 10a Based on this, the left initial mode and the left heating mode are switched. In the left heating mode, the heating power setting is increased by one step based on the input signal from the left up key 10b (however, the heating power “3 kW” is the upper limit). Based on the input signal from the left down key 10c, the thermal power setting is decreased by one step (however, the thermal power "warming" is the lower limit).

  In addition, the control means 16 has a right initial mode for turning off the output of the heating means for the right induction heating means 4, a thermal power “warming”, a thermal power “1” to a thermal power “7” (= 2.0 kW), and a thermal power “strong”. ”(= 2.5 kW) with two heating modes that turn on the output of the heating means by setting the heating power in nine stages, and based on the input signal from the right turn / on key 11a, The right heating mode is switched, and in the right heating mode, the heating power setting is increased by one step based on the input signal from the right up key 11b (however, the heating power “strong” is the upper limit), and the right heating key 11c The thermal power setting is decreased by one step based on the input signal (however, the thermal power “heat retention” is the lower limit).

  The control means 16 also opens the common relay contact 7, the radial relay contact 8, and the roaster relay contact 9 with respect to the radial heater 5 and the roaster heater 6, and turns off the energization of the radial heater 5 and the roaster heater 6. In the initial mode, the common relay contact 7 is closed and the relay contact 8 is closed continuously or intermittently opened / closed at a predetermined cycle by setting the heating power to “low”, “medium” and “strong”. In the radiant mode that controls the energization of the radiant heater 5, the common relay contact 7 is closed, and the roaster relay contact 9 is continuously closed or set at a predetermined cycle by setting the heating power in three stages: "weak", "medium", and "strong". There are three modes of roaster mode in which energization of the roaster heater 6 is controlled by opening and closing intermittently. In the initial mode of la / ro, an input signal from the radial off / on key 12a is provided. Hazuki said shifted to La stringent mode, the process proceeds to the low static mode based on an input signal from the roaster off / on key 12d.

  Further, the control means 16 increases the heating power setting by one step based on the input signal from the La / Lo-up key 12b (however, the heating power “strong” is the upper limit), and the control means 16 increases the heating power from the La / Lo-Down key 12c. The thermal power setting is decreased by one step based on the input signal (however, the thermal power “weak” is the lower limit), and the mode is shifted to the La / B initial mode based on the input signal from the radial off / on key 12a.

  Further, the control means 16 increases the thermal power setting by one step based on the input signal from the La / Lo-up key 12b in the roaster mode (however, the thermal power “strong” is the upper limit), and the input from the La / Lo-Down key 12c. The thermal power setting is decreased by one step based on the signal (however, the thermal power “weak” is the lower limit), and the process proceeds to the La / B initial mode based on the input signal from the roaster OFF / ON key 12d.

  Further, when the control means 16 detects welding of the common relay contact 7 based on the input signal from the common relay contact welding detection means 13, the common relay contact 7 is repeatedly opened and closed up to 8 times at 1 second closing / 1 second opening. When the relay is operated again, and the welding of the common relay contact 7 is not eliminated during this time, the common relay contact welding abnormality is determined.

  Further, when the control means 16 detects the welding of the radial relay contact 8 based on the input signal from the radial relay contact welding detection means 14, the control relay 16 closes the radial relay contact 8 for 1 second / opens for 1 second at maximum. If the relay relay operation for repeatedly opening and closing is performed and the welding of the radial relay contact 8 is not resolved during this time, the abnormal welding of the radial relay contact is determined.

  Further, when the control means 16 detects welding of the roaster relay contact 9 based on the input signal from the roaster relay contact welding detection means 15, the control means 16 repeatedly opens and closes the roaster relay contact 9 up to 8 times at 1 second closing / 1 second opening. When the relay is operated again, and the welding of the roaster relay contact 9 is not eliminated during this time, the roaster relay contact welding abnormality is determined.

  Further, the control means 16 controls the energization to the right induction heating means 4, the radiant heater 5 and the roaster heater 6 so that the current applied to one contact of the power switch 2 is 17A or less, and the left initial mode.・ In the right heating mode (in the case of the radial mode, or the common relay contact 7 and the radial relay contact 8 are welded together), the heating power “strong” output of the right induction heating means 4 is limited to 2.2 kW and left In the initial mode, right heating mode, and (the roaster mode, or the common relay contact 7 and the roaster relay contact 9 are both contact welded), the maximum heat setting that can be set by the right induction heating means 4 is limited to the heating power “7”. And, the thermal power “7” output is limited to 1.8 kW.

  Furthermore, the control means 16 restrict | limits the output of each heating means so that the total electric power of the whole apparatus may become a rating of 4.8 kW or less. More specifically, in the case of the left heating mode, the right heating mode, and the La / B initial mode, when the right induction heating unit 4 is the heating power “7”, the heating power “3 kW” output of the left induction heating unit 3 is set to 2.8 kW. When the right induction heating means 4 is the heating power “strong”, the maximum heating power setting that can be set by the left induction heating means 3 is restricted to the heating power “strong”, and the heating power “of the left induction heating means 3 and the right induction heating means 4“ Limit "strong" output to 2.4 kW. In the left heating mode, right heating mode, (in the case of the radial mode, or the common relay contact 7 and the radial relay contact 8 are welded together), the maximum heat power that can be set by the left induction heating means 3 and the right induction heating means 4 The setting is limited to the heating power “7”, and the output of the heating power “7” is limited to 1.8 kW. In the left heating mode, right heating mode, (the roaster mode, or the common relay contact 7 and the roaster relay contact 9 are both welded together), the maximum heat setting that can be set for the left induction heating means 3 and the right induction heating means 4 is set. Limit to thermal power “7” and limit the output of thermal power “7” to 1.6 kW.

  Based on the input signals from the common relay contact welding detection means 13, the radical relay contact welding detection means 14, and the roaster relay contact welding detection means 15, the control means 16 is connected to the common relay contact 7, the radial relay contact 8, and the roaster. When the relay contact welding abnormality is determined at any of the relay contacts 9, the fact that the radial heater 5 or the roaster heater 6 is in an energized state due to the relay contact welding abnormality is displayed on the display means or the acoustic means (not shown in FIG. 1). Is notified. In addition, the control means 16 forcibly turns off the power supply to the right induction heating means 4 only by contact welding of up to two of the common relay contact 7, the radial relay contact 8, and the roaster relay contact 9. Don't do it.

  Further, the control means 16 is based on the input signals from the common relay contact welding detection means 13, the radical relay contact welding detection means 14, and the roaster relay contact welding detection means 15, the common relay contact 7, the radical relay contact 8, and the roaster. When it is detected that all of the relay contacts 9 are in contact welding, relay reworking operation or relay contact welding abnormality, the energization to the right induction heating means 4 is forcibly turned off and the left induction heating means 3 can be set. When the maximum thermal power setting is limited to thermal power “7” and the relay contact welding operation is confirmed after relay re-operation, all of the common relay contact 7, the radial relay contact 8, and the roaster relay contact 9 are confirmed by the display means and the acoustic means. Is the relay contact welding abnormality, the radial heater 5 and the roaster heater 6 are energized, and the right induction heating means 4 cannot be energized. Carry out a notification to the effect that.

  As described above, in Embodiment 1 of the present invention, the control means 16 energizes the right induction heating means 4 when all of the common relay contact 7, the radial relay contact 8, and the roaster relay contact 9 are welded together. The power applied to one contact of the power switch 2 is 6A (radiant heater 5) + 7.5A (roaster heater 6) = 13.5A, and the rating of one contact of the power switch 2 is kept below 17A, and the device Total power is 2.0 kW (heating power of left induction heating means 3 “7”) + 1.2 kW (radiant heater 5) +1.5 kW (roaster heater 6) = 4.7 kW, and the rating is kept below 4.8 kW. The maximum heating power that can be set by the left induction heating means 3 is set to a heating power “7” (= 2.0 kW), and an output level that is not inconvenient in practical cooking can be secured.

  Further, the control means 16 forcibly turns off the power supply to the right induction heating means 4 only by contact welding of up to two of the common relay contact 7, the radial relay contact 8, and the roaster relay contact 9. Therefore, it is possible to reduce the frequency at which the radial heater 5 or the roaster heater 6 is erroneously energized by the relay contact welding and the frequency at which the energization to the right induction heating means 4 is forcibly turned off.

(Embodiment 2)
FIG. 2 is a block diagram of a heating cooker according to Embodiment 2 of the present invention. The difference from the first embodiment is that the power switch 17 is configured to be capable of applying only a weak current / voltage such as a tact switch, and instead of the power switch 2, the connection between the commercial power source 1 and each heating means is opened / closed. The left power relay contact 18 and the right power relay contact 19 with a rating of 1.7A are used. Further, the common relay contact 7 and the common relay contact welding detecting means 13 are deleted, and one terminal of the radial heater 5 and the roaster heater 6 is directly connected to one terminal of the right power supply relay contact 19. Furthermore, a right power relay contact welding detection means 20 is newly provided.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. When the power is turned off, the control means 16 shifts to the left initial mode, the right initial mode, and the La / B initial mode, and the power supply that prohibits the reception of input signals from the left input means 10, the right input means 11, and the middle input means 12. When the power is turned on and the power is turned on, input signals from the left input means 10, the right input means 11, and the middle input means 12 are received and the left induction heating means 3, the right induction heating means 4, the radiant heater 5, and the roaster heater 6 are input. The power-off state and the power-on state are alternately switched based on the input signal from the power switch 17. Further, when the power is turned off, both the left power relay contact 18 and the right power relay contact 19 are opened, and when the power is turned on, both the left power relay contact 18 and the right power relay contact 19 are closed.

  Further, when the control means 16 detects welding of the right power relay contact 19 in the power-off state based on the input signal from the right power relay contact welding detection means 20, the right power relay contact 19 is closed for 1 second / opened for 1 second. If the relay reworking operation is repeated to repeatedly open and close up to eight times, and the welding of the power relay contact 19 is not resolved during this time, the right power relay contact welding abnormality occurs.

  Then, the control means 16 is in the power-on state, and based on the input signals from the radial relay contact welding detection means 14 and the roaster relay contact welding detection means 15, either the radial relay contact 8 or the roaster relay contact 9 is used. When it is determined that the relay contact welding abnormality has occurred, the display means, the sound means (not shown in FIG. 2), etc. notify that the radial heater 5 or the roaster heater 6 is energized due to the relay contact welding abnormality. Note that the control means 16 does not forcibly turn off the energization to the right induction heating means 4 only by contact welding of either the relay relay contact 8 or the roaster relay contact 9.

  Further, the control means 16 is in a state where the power is turned on, and based on the input signals from the radial relay contact welding detection means 14 and the roaster relay contact welding detection means 15, both the radial relay contact 8 and the roaster relay contact 9 are welded together. When it is detected that the relay reworking operation or the relay contact welding abnormality is present, the power supply to the right induction heating means 4 is forcibly turned off, the right power supply relay contact 19 is forcibly opened, and the left induction heating means 3 is set. Limit the maximum possible firepower setting to firepower "7". When the control means 16 determines that the relay contact welding abnormality has occurred after the relay reworking operation, the display means, the acoustic means or the like causes both the radial relay contact 8 and the roaster relay contact 9 to malfunction with the relay heater 5 due to the relay contact welding abnormality. A notification that the roaster heater 6 is energized and the right induction heating means 4 cannot be energized is given.

  As described above, in Embodiment 2 of the present invention, the control means 16 turns off the energization to the right induction heating means 4 when both the radial relay contact 8 and the roaster relay contact 9 are welded together, and the right power supply The applied current to the relay contact 19 is 6A (radiant heater 5) + 7.5A (roaster heater 6) = 13.5A, the rated power of the right power relay contact 19 is kept below 17A, and the total power of the entire device is 2.0 kW (The heating power of the left induction heating means 3 is “7”) + 1.2 kW (radiant heater 5) +1.5 kW (roaster heater 6) = 4.7 kW, and the rating is set to 4.8 kW or less, and the left induction heating means 3 is set. By setting the maximum possible thermal power setting as thermal power “7” (= 2.0 kW), it is possible to ensure an output level that is not inconvenient in practical cooking.

  Further, the control means 16 forcibly opens the right power relay contact 19 to cut off the energization of the radial heater 5 and the roaster heater 6 when both the radial relay contact 8 and the roaster relay contact 9 are welded together. The safety of the equipment can be improved.

  In the first and second embodiments, the control means 16 inhibits the right induction heating means 4 from being energized when the relay contacts are welded and both the radial heater 5 and the roaster heater 6 are energized. In the induction heating means 3, the output of the right induction heating means 4 can be suppressed within a range in which an output level that is not inconvenient in practical cooking can be secured.

  Moreover, although the rating of the power switch 2 of the first embodiment and the left power relay contact 18 and the right power relay contact 19 of the second embodiment is 1.7 A, the rating can be applied to other rated values.

  In the first embodiment and the second embodiment, the total power of the entire device is rated 4.8 kW, but the present invention can be applied to other values such as 5.8 kW and 4.0 kW.

  In the first and second embodiments, the maximum output of the left induction heating unit 3 is 3.0 kW, the maximum output of the right induction heating unit 4 is 2.5 kW, the radial heater 5 is 1.2 kW, and the roaster heater. 6 is 1.5 kW, but other values are also applicable.

  As described above, the composite heating cooker according to the present invention has the contact capacity of the power switch or the power relay even when the relays are welded together and the heating means connected to the relay cannot be selectively energized. The other heating means is controlled to be energized so that it falls within the range of the above. Therefore, for heating cookers equipped with both a heating means for controlling energization with a relay and a heating means for controlling energization with a semiconductor element. Is also applicable.

The block diagram of the compound heating cooking appliance in Embodiment 1 of this invention The block diagram of the compound heating cooking appliance in Embodiment 2 of this invention

Explanation of symbols

2, 17 Power switch 3 Left induction heating means 4 Right induction heating means 5 Radiant heater 6 Roaster heater 7 Common relay contact 8 Radial relay contact 9 Roaster relay contact 13 Common relay contact welding detection means 14 Radial relay contact welding detection means 15 Roaster relay contact welding detection means 16 Control means 18 Left power relay contact 19 Right power relay contact

Claims (6)

A plurality of heating means including a power switch, two or more heating means that are energized and controlled by a relay, and a heating means that is energized and controlled by a semiconductor element; a relay contact welding detection means that detects contact welding of each of the relays; And a control means for controlling energization of each of the plurality of heating means, wherein all of the applied currents of the plurality of heating means are applied to the power switch, and the control means keeps the applied current of the power switch within a contact capacity range. To the heating means that selects and controls the energization from two or more heating means that are energized by the relay and controls the energization by the semiconductor element based on the input signal from the relay contact welding detection means A combined cooking device that is configured to inhibit or suppress the energization of. The power switch is composed of two contacts, and one contact is selected and connected from two or more heating means controlled by a relay and a plurality of heating means controlled by a semiconductor element, and the other contact is a semiconductor. Connect the rest of the plurality of heating means that are energized and controlled by the element, and based on the input signal from the relay contact welding detection means, the energization amount to the heating means that controls the energization by the semiconductor element connected to the other contact 2. The combined cooking device according to claim 1, wherein energization to a plurality of heating means controlled to energize with a semiconductor element connected to the one contact is prohibited or suppressed so as to give priority. A plurality of heating means including a power supply relay that opens and closes based on an input signal from a power switch, two or more heating means that are energized and controlled by a relay, and a heating means that is energized and controlled by a semiconductor element; and contact welding of each of the relays A relay contact welding detecting means for detecting; and a control means for controlling energization of each of the plurality of heating means, wherein all the applied currents of the plurality of heating means are applied to the power supply relay, and the control means includes the power supply relay Is selected from two or more heating means that are energized and controlled by the relay so as to keep the applied current within a contact capacity range, and based on an input signal from the relay contact welding detecting means, A combined cooking device configured to prohibit or suppress energization to a heating unit that controls energization by the semiconductor element. 4. The combined heating cooker according to claim 3, wherein energization of the heating means that is energized and controlled by the semiconductor element is prohibited based on an input signal from the relay contact welding detection means, and the contact of the power relay is opened. It comprises two power relays, one power relay is selected and connected from two or more heating means controlled by a relay and a plurality of heating means controlled by a semiconductor element, and the other power relay is connected to the power relay Connecting the rest of the plurality of heating means that are energized and controlled by the semiconductor element, and energizing the heating means that is energized and controlled by the semiconductor element connected to the other power relay based on the input signal from the relay contact welding detection means The combined heating cooker according to claim 3 or 4, wherein energization to a plurality of heating means that are energized and controlled by a semiconductor element connected to the one power supply relay is prohibited or suppressed so as to give priority to the amount. . In each of the heating means to be energized and controlled by the relay, the energization control is performed by two or more relays. Based on the input signal from the relay contact welding detection means, all the relays corresponding to the respective heating means are contact welded. The combined cooking device according to claim 1, wherein energization of the heating means that controls energization by the semiconductor element is prohibited or suppressed when it is detected as being.