JP5432638B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker.

  Conventionally, a heating part having a stove burner and a container detection means for detecting the presence or absence of a cooking container placed on the heating part are provided, and ignition in the stove burner is performed in a state where the cooking container is not detected by the container detection means. There is known a heating cooker that sets the heating power to low heat when trying to perform (see, for example, Patent Document 1).

  In this heating cooker, since ignition is performed even when the cooking container is not detected, if the heating unit where the cooking container is not placed is mistakenly started, the stove burner is ignited. The flame goes up and it is dangerous. For this reason, there is also known a heating cooker that performs container detection control for controlling not to start heating with a stove burner when a cooking container is not detected.

JP 2007-46799 A

  The cooking device that performs container detection control is equipped with a latch solenoid valve that closes the gas flow path for supplying gas to the stove burner, and heats the stove burner when the cooking container is not detected by the container detection means. The latch solenoid valve is closed so as not to start.

  When the container detection control is to be performed, it is conceivable that the control unit performs control so as to open and close the latch electromagnetic valve based on the detection information of the cooking container by the container detection means. In this case, when the cooking container is not detected, the latch electromagnetic valve is closed, and when the cooking container is detected, the latch electromagnetic valve is controlled to open, but the cooking container is placed on the heating unit. The latch solenoid valve opens and closes every time it is removed from the heating unit, and power consumption is intense and not economical.

  It is also possible to control the solenoid valve so that the latch solenoid valve is normally closed when the cooking container is detected when heating is started, and the latch solenoid valve is closed when heating is stopped. It is done. However, even in this case, the latch electromagnetic valve opens and closes every time it is heated by the heating unit, and power consumption is intense, which is not economical.

  The present invention was invented in view of the above-described conventional problems, and the object of the present invention is to reduce the operation frequency of a latch electromagnetic valve for performing container detection control, and to save power. It is an object to provide a cooking device.

In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a heating unit having a stove burner equipped with an ignition device, a gas flow path for supplying gas to the stove burner, and opening and closing the gas flow path To control the start of heating / adjustment of the heating amount / stop the heating, and to give the control unit the start / stop of heating of the stove burner. A heating / stopping manual operation section and a container detection means for detecting the presence / absence of a cooking container placed on the heating section are provided, and heating in the stove burner is not started when the cooking container is not detected by the container detection means In the heating cooker in which the controller performs container detection control for closing the latch electromagnetic valve, the latch electromagnetic valve is opened in a standby state in which heating is not performed in the heating unit, and the cooking container is moved by the container detection means in the standby state. When not detected If the operation of starting the heating by the heating / stop manual operation portion is, closing the latch solenoid valve, and characterized in that it does not operate the ignition device until closing the latch solenoid valve.

An invention according to claim 2 is the invention according to claim 1 , wherein the ignition device includes a plurality of heating units, gas flow paths for the heating units, latch electromagnetic valves, and container detection means, and each of the plurality of heating units includes In the cooking device that operates all at the same time, the ignition device is operated after closing the latching electromagnetic valve of the heating unit in which the cooking container is not detected by the container detection means.

The invention according to claim 3 is the invention according to claim 1 or 2 , wherein when the cooking container is not detected by the container detecting means in the standby state, the heating / stopping manual operation unit is operated to start heating and the latch solenoid valve is After the closing, when the heating / stopping manual operation unit is operated to stop the heating, the latch electromagnetic valve is opened.

The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein the container detection is canceled in the cooking device provided with the container detection release operation unit that gives a command to the control unit so as not to perform the container detection control. When the operation is operated and the container detection control is not performed, and heating is started by the heating / stopping manual operation unit, the heating is started even if the cooking container is not detected by the container detection means. Features.

  In the invention according to claim 1, even if an attempt is made to start heating when a cooking container is not detected, the latch solenoid valve is closed to shut off the gas supply, so that ignition is not performed, and no flame is generated, which is safe. In addition to this, when heating, of course, when not heating, the latch solenoid valve is normally opened, and when the cooking container is not detected, the heating / stopping manual operation unit starts heating. The latching solenoid valve only needs to be closed only when the operation is performed, and the operation frequency of the latching solenoid valve can be reduced, and power saving can be achieved.

Also, if the ignition device is activated before the latch solenoid valve is closed, the gas supplied until the latch solenoid valve is closed is ignited, and there is a possibility that a slight flame may occur, so the latch solenoid valve is closed. By preventing the ignition device from operating until it is possible to prevent the occurrence of flame.

Moreover, in the invention which concerns on Claim 2 , when operation of a heating start is performed by the heating part by which the cooking container is not detected, and the heating part by which it is detected, the latch of the heating part by which the cooking container is not detected After the solenoid valve is closed, the heating can be started by starting the heating unit in which the cooking container is detected.

Also, if the latching solenoid valve is closed when not heating and the latching solenoid valve is opened only when heating, the latching solenoid valve is closed in the unheated standby state and heating is started. Sometimes the latch solenoid valve is opened and when the heating is stopped, the latch solenoid valve is closed, and it is necessary to open and close the latch solenoid valve every time the heating is performed. In the invention according to claim 3 , the cooking container is detected. As long as it is not necessary to open and close the latch solenoid valve every time it is heated, the latch solenoid valve can be kept open, the latch solenoid valve can be operated less frequently, and power can be saved. .

Moreover, in the invention which concerns on Claim 4 , heating in the state without a cooking container, such as an omelet, is attained.

It is a whole perspective view of the cooking-by-heating machine of one embodiment of the present invention. It is a front view of the cooking setting part for stoves. It is explanatory drawing of the gas supply to a stove burner and a grill burner. It is sectional drawing of a gas valve block. It is sectional drawing of a gas valve block, (a) shows the case where a slider exists in a front position, (b) shows the case where a slider exists in a rear position, (c) shows the case where a slider exists in the last position. It is sectional drawing of a stove burner. It is a block diagram of a control circuit.

  Hereinafter, a built-in gas stove 1 including a stove part and a grill will be described as a heating cooker according to an embodiment of the present invention with reference to the accompanying drawings.

  As shown in FIG. 1, the top plate 11 that constitutes the top surface portion of the gas stove 1 is provided with a plurality of heating units 2. In this embodiment, as shown in FIG. 1, the stove part 2a provided with the hot-burning stove burner 31 as a heating part is provided in the left side and the right side. On the top surface of the top plate 11, there are provided five virtues 21 centering on each burner 31, and the stove burner 31, the five victories 21, the ignition device 23 and the ignition detection device 24 (see FIG. 3) are heated. The stove part 2a as the part 2 is comprised.

  The ignition device 23 includes one input circuit (including the primary winding of the high voltage transformer) and one output circuit (secondary winding of the high voltage transformer) for each burner. By energizing the input circuit, a high voltage is generated in each output circuit (secondary winding of the high-voltage transformer), and a high voltage for ignition discharge is supplied to all the burners.

  As shown in FIG. 6, each stove unit 2 a is provided with a container detection means 25 for detecting a cooking container placed on the virtues 21 and a temperature sensor 26 for detecting the temperature of the lower surface of the cooking container. is there. The container detection means 25 includes a support portion 25a fixed to the gas stove 1, a movable portion 25b supported by the support portion 25a so as to be movable in the vertical direction, and a detection switch 25c for detecting the vertical position of the movable portion 25b. , Composed of. The movable portion 25b is urged upward by an urging means (not shown) such as a spring, and the upper end of the movable portion 25b protrudes upward from the virtues 21. When the cooking container is placed on the virtues 21 in this state, the upper end of the movable part 25b is pushed down to the lower surface of the cooking container, and the downward movement is detected by the detection switch 25c as the movable part 25b is moved downward. Is recognized by the control unit 4. And the temperature sensor 26 is provided in the upper end part of the movable part 25b, and when the cooking container is mounted on the virtues 21, it contacts the lower surface of the cooking container to detect the temperature, and the temperature is recognized by the control part 4. .

  Further, the gas stove 1 is provided with a grill 2b as a heating unit 2 as shown in FIG. The grill 2b includes a grill box formed in the center of the main body of the gas stove 1, a grill burner (not shown) as heating means provided in the grill box, an ignition device 23, and an ignition detection device 24. The front end of the grill cabinet 2b is open to the front surface portion 12 of the gas stove 1 and is closed by a grill door 28 so as to be opened and closed.

  The ignition device 23 ignites the spark plugs provided at the fuel gas discharge ports of the stove burner 31 and the grill burner by a high-pressure pulse generated by an igniter (not shown). 4 is controlled.

  The ignition detection device 24 is composed of thermocouples provided in the stove burner 31 and the grill burner, and the thermoelectromotive force generated by the heat of the flame is recognized by the control unit 4 when ignited.

  As shown in FIG. 1, front panels P1 and P2 that constitute the front portion 12 of the gas stove 1 together with the grill door 28 are provided on both sides of the grill door 28. On the upper side of the left front panel P1, A fire extinguishing button 14a for igniting / extinguishing the left burner 31 is provided. From the upper left side of the right front panel P2, a fire extinguishing button 14b for igniting / extinguishing the grill burner is provided. A point-extinguishing button 14c for igniting / extinguishing the burner 31 is provided. These point fire extinguishing buttons 14 (14a to 14c) serve as a heating / stop manual operation unit for manually starting / stopping heating in the heating unit 2. Further, on the front surface portion 12, a heating power adjustment lever 15 (15a to 15c) serving as a heating amount manual operation unit for manually adjusting the heating amount of each heating unit 2 is provided on each point fire extinguishing button 14a to 14c, respectively. It is.

  As shown in FIGS. 3 and 4, the gas valve block 6 includes an internal gas flow path 61, an introduction port 61 a serving as an upstream end of the gas flow path 61, and a discharge port 61 b serving as a downstream end. Are provided. The internal gas flow path 61 is provided with a valve hole for the safety valve 62 and a valve hole for the main valve 63 from the upstream side. On the downstream side of the valve hole for the main valve 63, a large-fire channel 61c and a small-fire channel 61d are provided in parallel, and the large-fire channel 61c is a latch for switching between large and small thermal powers. A valve hole for the electromagnetic valve LB1 is provided, and a valve hole for the latch electromagnetic valve LB2 is provided in the small fire channel 61d.

  The large-fire channel 61c and the small-fire channel 61d merge on the downstream side of the valve hole of the latch solenoid valve LB1 and the small-fire orifice of2 located on the downstream side of the latch solenoid valve LB2, Further, on the downstream side, a valve hole for the flow rate control valve 65 interlocking with the heating power adjusting lever 15 is provided.

  When the fire extinguishing button 14 is operated when the cooking container is not detected by the container detection means 25 described above, the control unit 4 closes the latch electromagnetic valve LB1 and the latch electromagnetic valve LB2 so that heating is not started. Container detection control is performed.

  Further, the gas flow path 61 is provided with a bypass flow path BP that bypasses a portion where the latch electromagnetic valve LB1 and the latch electromagnetic valve LB2 are provided, and a bypass orifice of1 is provided in the bypass flow path BP. The bypass orifice of1 is provided to share a plurality of gas valve blocks 6, and may be opened when the gas valve block 6 is used for application to other models. In FIG. 2, the bypass orifice of1 is closed by a closing body (not shown).

  When the heating power adjustment lever 15 is set to a position between medium and large fires, the heating power of the burner 31 depends on the combination of opening and closing of the latch solenoid valve LB1 and the latch solenoid valve LB2. As described above, adjustment control is performed by the control unit.

なお、ラッチ電磁弁ＬＢ１、ＬＢ２は、開弁用の極性のパルス電流の通電により開放状態に移行し、その後は通電を停止した後にも開放状態を維持し、閉弁用の極性（開弁用とは逆極性）のパルス電流の通電により閉止状態に移行し、その後は通電を停止した後にも閉止状態を維持する。このとき電流のパルス幅は２００〜３００ｍ秒に設定されており、こんろの火力を種々の状態に維持する場合にも省電力であるから、機器の電源として乾電池が用いられる場合に特に好適に用いられる。

The latch solenoid valves LB1 and LB2 shift to an open state when a pulse current having a polarity for opening the valve is energized, and then maintain the open state even after the energization is stopped. When the pulse current of the opposite polarity is applied, the closed state is entered, and thereafter the closed state is maintained even after the energization is stopped. At this time, the pulse width of the current is set to 200 to 300 milliseconds, and power is saved even when the heating power of the stove is maintained in various states. Therefore, it is particularly suitable when a dry battery is used as a power source of the device. Used.

  The downstream side of the valve hole for the flow rate control valve 65 reaches an outlet 61 b for supplying gas to the stove burner 31.

  A slider 66 is attached to the instrument plug main body 60 so as to be movable in the front-rear direction. The slider 66 is pushed rearward by a child lock slide portion (not shown) incorporated in the point-extinguishing button 14. It has come to retreat.

  The point-extinguishing button 14 having a child lock slide portion incorporated therein is provided so as to be movable back and forth. The portion above the portion pressed by the finger of the point-extinguishing button 14 is pivotally supported on the side of the stove body. Then, the portion pressed by the finger moves back and forth, and presses the front end surface of the slider 66 backward. The slider 66 is provided with a switching mechanism (not shown) for switching between a front position and a rear position, for example, an existing heart-shaped cam, and the slider 66 is moved from the rear position each time the point extinguishing button 14 is pressed. It moves forward and is positioned at the front position (see FIG. 5 (a)), or retracts from the front position and is positioned at the rear position (see FIG. 5 (b)), and the front position and the rear position are switched and held. The

  Further, a valve rod 67 that moves forward and backward as the slider 66 advances and retracts is provided. The distal end side of the valve rod 67 is inserted into the gas flow path 61, and the distal end portion is inserted through the valve hole for the main valve 63 and the valve hole for the safety valve 62 from the rear side, that is, from the downstream side to the upstream side. Yes. When the slider 66 switches from the front position to the rear position, the valve rod 67 temporarily moves backward to the rearmost position behind the rear position (see FIG. 5C) and then moves forward to the rear position. Is moved to the upstream side, the valve hole for the safety valve 62 is opened by moving the valve body of the safety valve 62 closing the valve hole for the safety valve 62 from the upstream side. The safety valve 62 is composed of an electromagnetic valve, and the valve body for the safety valve 62 is closed from the rear when the valve body moves forward, that is, downstream, and the valve hole for the safety valve 62 that is moved backward, that is, upstream. Is released.

  The safety valve 62 is kept open by the control unit 4 only when a flame is detected by the ignition detection device 24, and when the flame is no longer detected, the maintenance of the open state by the control unit 4 is stopped and closed. As a result, the fuel gas can be prevented from flowing out when it disappears due to boiling or wind and the flame of the ignition detection device 24 is no longer detected. Further, when the temperature of the lower surface of the cooking container detected by the temperature sensor 26 reaches a predetermined temperature (for example, 250 ° C.), it is determined that an abnormality such as airing or scorching has occurred, and the safety valve 62 is closed. . In this manner, the safety valve 62, the ignition detection device 24, and the temperature sensor 26 constitute an abnormality detection means.

  In the middle of the valve rod 67, a main valve body for opening and closing a valve hole for the main valve 63 is provided. When the slider 66 is positioned at the front position, the main valve element closes the valve hole for the main valve 63 from the rear, and when the slider 66 is positioned at the rear position, the main valve element is for the main valve 63. The valve hole for the main valve 63 is opened behind the valve hole.

  The opening of the valve hole for the flow rate control valve 65 is freely adjusted by the movement of the heating power adjustment needle 65a in the front-rear direction. The opening of the needle 65a is adjusted by operating the thermal power adjustment lever 15, and the supply amount of the fuel gas is increased as the thermal power adjustment lever 15 goes to the right.

  An instrument plug switch that is switched ON / OFF depending on the position of the point fire extinguishing button 14 or the slider 66 is provided. The appliance plug switch is turned off when the fire extinguishing button 14 (or the slider 66) is located at the front position, and turned on when it is located at the rear position (including the last position).

  In order to ignite the stove burner 31 and the grill burner, the point fire extinguishing button 14 is pressed and the slider 66 is moved backward from the front position to the rear position. With the valve rod 67 retracted together with the slider 66, the safety valve 62 is opened and the main valve 63 is opened, and the fuel gas is supplied to the stove burner 31 and the grill burner. Further, when the slider 66 moves backward, the appliance plug switch is turned on, the power supply to the control unit 4 is turned on, and the control unit 4 starts operating.

  As shown in FIG. 7, in the control unit 4, the positive power supply terminal 41 is connected to the positive electrode of the power supply via the transistor TR1, and the negative power supply terminal 42 is connected to the negative electrode of the power supply. The transistor TR1 is a PNP transistor whose emitter is connected to the positive electrode of the power supply, the collector is connected to the power supply terminal 41 on the positive electrode side of the control unit 4, and the base is in series with the resistor R2 and the resistor R2, respectively. The resistor R1 is connected between the emitter and the base through the two transistors TR2 and TR3 connected to the negative electrode of the power source.

  The two transistors TR2 and TR3 are NPN type transistors, the collectors of which are connected to the base of the transistor TR1 through the resistor R2, and the emitters of which are connected to the negative electrode of the power supply. The bases of the transistors TR2 and TR3 are connected to the negative electrode of the power supply via resistors R3 and R4, respectively.

  Further, a plurality of lines in which the switches S (S1 to S5) and the diodes D (D1 to D5) are connected in series are connected in parallel between the positive electrode of the power source and the base of the transistor TR2. In this order, the positive electrode of the power supply, the switches S, the diodes D, the resistor R5, and the base of the transistor TR2 are arranged in this order. The base of the transistor TR3 is connected to the power holding signal output terminal T1 of the control unit 4 via the resistor R6.

  And the part between switch S of each line and the diode D and each signal input terminal of the control part 4 are connected via each resistance R7. Switches S1 to S3 are instrument plug switches, S1 is an instrument plug switch S1 of the stove part 2a provided with the left stove burner 31, and S2 is an instrument plug switch of the stove part 2a provided with the right stove burner 31. S2 and S3 is the appliance plug switch S3 of the grill 2b. The switches S4 and S5 are container detection release switches S4 and S5 made up of tact switches, and the container detection release operation unit 16 (16a, 16c) of the cooking setting unit 7 for the stove provided by the user on the front panel P1. It is turned on only during the push operation, and turned off when the push operation is stopped. This will be described later.

  When any one of the instrument plug switches S1 to S3 is turned on, a base current flows through the transistor TR2 and the emitter-collector is turned on. A base current flows through the transistor TR1 and the emitter-collector is turned on. 4 is fed. When power is supplied to the control unit 4, a power holding signal (High output) is output from the power holding signal output terminal T1 of the control unit 4, a base current flows through the transistor TR3, the emitter-collector is turned on, and the transistor TR1 is turned on. The base current flows and the emitter-collector is turned on. As long as the power holding signal is output, power supply to the control unit 4 is continued. As described above, the appliance plug switches S1 to S3 also serve as a power switch for turning on the power supply to the control unit 4.

  When any one of the instrument plug switches S1 to S3 is turned ON, the control unit 4 starts to operate, and a signal is input to the corresponding signal input terminal of the control unit 4 via the instrument plug switches S1 to S3 and the resistor R7. It is detected whether any of the instrument plug switches S1 to S3 are turned on. When the appliance plug switches S1 to S3 are turned on, the control unit 4 operates all the burner 31 and the ignition device 23 of the grill burner to cause continuous discharge, and energizes the coil of the safety valve 62 to open the safety valve 62. A predetermined time (for example, 5 seconds) is secured. When ignition is detected by the ignition detector 24, the safety valve 62 is kept open.

  When ignition is not detected by the ignition detection device 24, the safety valve 62 is closed by stopping energization of the coil of the safety valve 62, and the valve body of the safety valve 62 is not moved backward by the valve rod 67 by pushing the fire extinguishing button 14. The safety valve 62 is not opened. In the case of the stove 2a, when the cooking container is not detected by the container detection control described above, the ignition device 23 does not operate even if the appliance plug switches S1 to S3 are turned on, and the coil of the safety valve 62 Do not energize.

  Furthermore, even when the container detection release switches S4 and S5 are turned on, power supply from the power source to the control unit 4 is started and the power holding signal is received as in the case where the instrument plug switches S1 to S3 are turned on. The power supply to the control unit 4 is continued. When the container detection release operation unit 16a of the cooking setting unit 7 (see FIG. 2) for the stove provided on the left front panel P1 shown in FIG. 1 is continuously pressed for a predetermined time (for example, 3 seconds), the container detection is performed. When the release switch S4 is turned on, the display unit 17a is turned on, and the container detection release operation unit 16c of the cooking setting unit 7 for the stove provided on the left front panel P1 is operated for a predetermined time (for example, 3 seconds) or longer. When the pushing operation is continued, the container detection release switch S5 is turned on and the display portion 17c thereon is turned on.

  The container detection release switch S4 is a switch for releasing the container detection control in the stove part 2a provided with the left side burner 31, and the container detection release switch S5 is provided with the right high heating power burner 31. It is a switch which cancels the container detection control in the stove part 2a. When the container detection release switch is turned ON for a predetermined time (for example, 3 seconds) and recognized by the control unit 4, the container detection control is released and the mode is changed to the release mode. In the release mode, since the container detection control is not performed, even if the cooking container is not detected in the case of the stove 2a, the ignition device 23 is activated when the appliance plug switches S1 and S2 are turned on, and the coil of the safety valve 62 is activated. Is energized. Further, in the release mode of the present embodiment, as described above, the predetermined temperature when the safety valve 62 is closed when the temperature of the cooking container detected by the temperature sensor 26 reaches a predetermined temperature (for example, 250 ° C.). Is set to a temperature higher than that (for example, 290 ° C.), and cooking at a temperature exceeding a predetermined temperature (for example, 250 ° C.) becomes possible. The release mode is continued for one hour and ends.

  When heating is started, a desired heating power can be obtained by operating the heating power adjusting lever 15. It should be noted that the heating power adjusting lever 15 of the stove section 2a equipped with the left stove burner 31 is operated in conjunction with the operation of the operating section when the operating section of the stove section 2a is operated for ignition. It is designed to move to the thermal power side, and has a moderate thermal power at the time of ignition.

  When the sliders 66 of all the point fire extinguishing buttons 14 are set to the front position, the main valve 63 is closed and the fire is extinguished, the instrument plug switches S1 to S3 are turned off, the safety valve 62 is closed, and the output of the power holding signal is stopped. Thus, the power supply to the control unit 4 ends.

  Next, automatic cooking will be described. As shown in FIG. 2, a cooking setting unit 7 for the stove is provided below the front panel on the left side of the gas stove 1. A cooking setting unit for grill is provided on the lower right side of the front panel on the right side of the gas stove 1, but details will not be described in detail. A battery case 13 is provided on the lower right side of the front panel on the right side of the gas stove 1 in which a battery serving as a power source for the control unit 4 composed of a microcomputer is accommodated.

  The cooking setting unit 7 for a stove sets a cooking time with a set of an auto menu setting unit 71 and an auto menu display unit 72 for setting an automatic cooking menu (auto menu) for fried food, hot water and rice cooking A timer input unit 73 and a timer display 74 are provided. As the auto menu setting unit 71, a fried food switch 71a, a hot water switch 71b, and a rice cooking switch 71c are provided. The deep-fried food mode is an automatic cooking mode in which the heating power of the stove burner 31 is automatically adjusted so that the temperature set by the user is reached after the stove burner 31 is ignited. Thus, it is possible to set fried food cooking at a target temperature among a plurality of types of fried food cooking such as 200 ° C., 180 ° C., and 160 ° C., and the setting is displayed on the fried food display portion 72a.

  Also, in the hot water mode and rice cooking mode, after the stove burner 31 is ignited, it is burned under preset combustion conditions, and automatic cooking that automatically extinguishes the stove burner 31 when the completion of hot water kettle and rice cooking is predicted. Mode. The hot water switch 71b can be set by selecting a hot water heater that automatically extinguishes after hot water has been fired or whether to keep warm for a certain period of time, such as automatic fire extinguishing, 5-minute heat retention, and the setting is displayed on the hot water display 72b. It has come to be. In addition, the rice cooking switch 71c can set the cooking of the intended rice among a plurality of types of cooking such as rice and rice porridge, and the setting is displayed on the rice cooking display 72c. ing.

  In the present embodiment, the latching electromagnetic valves LB1 and LB2 are opened in the standby state, and only when the heating start operation is performed by the heating / stopping manual operation unit when the cooking container is not detected, the latching electromagnetic valves LB1, LB2 is closed. If heating is started by the heating / stopping manual operation unit when the cooking container is detected, the latch electromagnetic valves LB1 and LB2 are kept open.

  In addition, after the latch solenoid valves LB1 and LB2 are closed, when the heating / stopping manual operation unit is operated to stop heating (that is, when the fire extinguisher button 14 is pressed to bring the slider 66 to the front position). The latch solenoid valves LB1 and LB2 are opened, and the latch solenoid valves LB1 and LB2 in the standby state are ensured to be opened.

  By doing so, it is only necessary to close the latch solenoid valves LB1 and LB2 when the heating / stopping manual operation portion is operated to start heating when the cooking container is not detected, and the latch solenoid valves LB1 and LB2 are closed. The operation frequency can be suppressed and power saving can be achieved. That is, most cooking is performed by placing the cooking container on the heating unit 2, and heating cooking without using a cooking container such as garlic is rare, so the cooking container is placed on the heating unit 2 and heated. As long as it is performed, the latch solenoid valves LB1 and LB2 do not open and close, and power saving can be achieved. Also, deterioration of the latch solenoid valves LB1 and LB2 can be suppressed, and maintenance labor and cost can be reduced. In this embodiment, since the safety valve 62 is provided separately from the latch electromagnetic valves LB1 and LB2, there is no problem in safety even if the latch electromagnetic valves LB1 and LB2 are always opened.

  Further, in the present embodiment, when the heating start operation is performed by the heating / stopping manual operation unit when the cooking container is not detected, the latching electromagnetic valves LB1 and LB2 are not only closed, but the latching electromagnetic valves LB1 and LB2 are also closed. Control is performed so that the ignition device 23 is not operated until is closed. When the cooking container is not detected, it takes about 0.12 seconds from the start of the heating operation by the heating / stopping manual operation unit until the latch solenoid valves LB1 and LB2 are closed. 31 will be supplied. Even if the ignition device 23 is activated during this time and it is ignited, there is almost no possibility that a flame will occur due to the small amount of gas, and even if a flame occurs, the gas will be discharged in about 0.12 seconds. Since the supply is stopped and the flame does not exist continuously, it can be said that there is no danger. However, by not operating the ignition device 23 until the latch solenoid valves LB1 and LB2 are closed as described above, Generation can be reliably prevented.

  Furthermore, the ignition device 23 is operated after closing the latch electromagnetic valves LB1 and LB2 of the heating unit 2 in which the cooking container is not detected. When a heating start operation is performed by the heating unit 2 in which the cooking container is not detected and the heating unit 2 in which the cooking container is detected, the heating unit 2 in which the cooking container is detected performs ignition as usual and starts heating. can do. Further, if the ignition device 23 is not operated even after the latching solenoid valves LB1 and LB2 are closed, the user may misunderstand that the failure has occurred, but the ignition is performed after the latching solenoid valves LB1 and LB2 are closed. Since the device 23 operates, there is no possibility of misidentification.

  Further, when the container detection release operation unit is operated and the container detection control is not performed, the latch electromagnetic valves LB1 and LB2 are kept open and heating is started regardless of whether or not the cooking container is detected. . Thereby, the heating cooking which does not place cooking containers, such as an omelet, in the heating part 2 is attained.

DESCRIPTION OF SYMBOLS 1 Gas stove 11 Top plate 12 Front part 13 Battery case 14 Point fire extinguishing button 15 Fire power adjustment lever 16 Container detection cancellation | release operation part 2 Heating part 2a Stove part 2b Grill 21 Gotoku 23 Ignition device 24 Ignition detection apparatus 25 Container detection means 26 Temperature sensor 28 Grill door 31 Stove burner 4 Control unit 6 Instrument plug 60 Instrument plug body 61 Gas flow path 61c Flow path for large fire 61d Flow path for small fire 62 Safety valve 63 Main valve 65 Flow control valve 66 Slider 67 Valve rod 7 Cooking setting unit for stove LB1 Latch solenoid valve LB2 Latch solenoid valve

Claims (4)

Heating unit having a stove burner equipped with an ignition device, a gas flow path for supplying gas to the stove burner, a latch solenoid valve for opening and closing the gas flow path, and heating start / heating in the stove burner Control unit for controlling amount adjustment / stop of heating, heating / stop manual operation unit for giving control of start / stop of heating of stove burner, and cooking placed on heating unit A container detecting means for detecting the presence or absence of the container, and the controller performs container detection control for closing the latch solenoid valve so as not to start heating in the stove burner when the cooking container is not detected by the container detecting means. In the cooking device, the latch electromagnetic valve is opened in a standby state in which heating is not performed in the heating unit, and when the cooking container is not detected by the container detection means in the standby state, the heating / stopping manual operation unit is used to start heating. Was The case, closing the latch solenoid valve, and cooking device, characterized in that not activate the igniter until closing the latch solenoid valve. In a heating cooker that includes a plurality of heating sections and gas flow paths, latch solenoid valves, and container detection means for the heating sections, and each of the ignition devices provided in each of the plurality of heating sections operates simultaneously, the cooking container is moved by the container detection section. 2. The cooking device according to claim 1, wherein the ignition device is operated after closing the latch electromagnetic valve of the heating unit that is not detected . When the cooking container is not detected by the container detection means in the standby state, the heating / stopping manual operation unit is operated to start heating, the latching solenoid valve is closed, and then the heating / stopping manual operation unit is operated to stop heating. 3. The cooking device according to claim 1 or 2 , wherein the latch electromagnetic valve is opened in the event of a failure . In a heating cooker equipped with a container detection release operation unit that gives a command to the control unit so as not to perform container detection control, when the container detection release operation unit is operated and the container detection control is not performed, heating is performed by the heating / stopping manual operation unit The heating cooker according to any one of claims 1 to 3, wherein when the starting operation is performed, heating is started even if the cooking container is not detected by the container detection means .

Images