JP2005121287A - Cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooking device with a tamper-resistant child lock by diversifying and complicating the releasing method of the lock. <P>SOLUTION: The cooking device comprises a microcomputer 2 that is a combustion control circuit for controlling combustion, an ignition/extinguishment switch 7, and a child lock switch 5 for inhibiting an instruction of combustion by the ignition/extinguishment switch 7. The lock is locked by continuously pressing the child lock switch 5 for a predetermined time, and released by continuously pressing the child lock switch 5 again for the same time as the predetermined time of continuous pressing. The predetermined time of continuous pressing can be set to an optional time, so that a child cannot remember the time to release the lock. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cooking appliance provided with means for preventing erroneous operation and mischief regarding ignition and extinguishing operations.

  Conventionally, this type of cooking appliance has a function called child lock. This is configured to prohibit the heating function by operating a specific switch (see, for example, Patent Document 1).

FIG. 8 shows a conventional cooking appliance described in Patent Document 1. As shown in FIG. As shown in FIG. 8, the controller 12, the lock switch 10, the magnetron driving circuit 13, and the magnetron 6 are included.
JP-A-7-63346

  However, in the conventional configuration, since the lock switch 10 is pressed five times continuously, the lock state, that is, the state where the heating start switch other than the lock switch is not accepted, or the release thereof is switched, the child can perform the operation. When I learned it, I had the problem of failing to do that function. In addition, even when a plurality of specific switches are pressed simultaneously or in a specific order as shown in the embodiment, even in a locked state due to operability, many switches are pressed simultaneously. However, if the order is always the same, even if the order is complicated, there is a problem that it is easy for a child to memorize the order.

  The present invention solves the above-mentioned conventional problems, and provides an easy-to-use cooking device that prevents mischief by preventing a child from setting a locked state and does not require setting and releasing. Objective.

  In order to solve the above-described conventional problems, a cooking appliance according to the present invention includes a combustion control circuit that controls combustion, an ignition extinguishing switch that inputs a combustion instruction to the combustion control circuit, and the ignition device by pressing and holding for a predetermined time. There is a child lock switch that releases the lock by prohibiting combustion by the fire extinguisher switch and pressing it again for a predetermined time in the same way, and the predetermined time for holding the child lock switch can be set to an arbitrary time. is there.

  As a result, it is possible to arbitrarily set the time for which the child lock switch is kept pressed, so that it is possible to prevent the child from memorizing and releasing the release method by changing it every time.

  The cooking appliance of the present invention cannot easily release the locked state, and can prevent an unsafe state due to mischief or the like.

  A first aspect of the present invention is a combustion control circuit for controlling combustion, an ignition extinguishing switch for inputting a combustion instruction to the combustion control circuit, and a child lock for prohibiting an instruction for combustion by the ignition extinguishing switch by pressing and holding for a predetermined time. A cooking device comprising a switch, wherein the predetermined time during which the child lock switch is kept pressed can be set to an arbitrary time.

  Therefore, the input reception time of the switch for setting and releasing to the locked state is restricted, and the time can be changed. Therefore, the locked state cannot be easily released, and erroneous operation can be prevented.

  According to a second aspect of the present invention, there is provided a combustion control circuit for controlling combustion, an ignition extinguishing switch for inputting a combustion instruction to the combustion control circuit, an operation unit provided with the ignition extinguishing switch and a plurality of switches for operating a combustion state, Any switch provided in the operation unit can be set as a child lock switch that prohibits an instruction of combustion by the ignition / extinguishing switch.

  Therefore, a specific switch is not always used as a child lock switch. Therefore, a child or the like cannot remember the child lock switch, and mischief can be prevented.

  A third invention includes a combustion control circuit for controlling combustion, an ignition extinguishing switch for inputting a combustion instruction to the combustion control circuit, and a child lock switch for prohibiting an instruction for combustion by the ignition extinguishing switch, The child lock state by the lock switch is released after a predetermined time.

  Therefore, since the locked state is automatically released over time, it is possible to avoid a situation in which the device cannot be used by forgetting the unlocking method because it has not been used for a long time.

  According to a fourth aspect of the present invention, a power shut-off means for shutting off the power source of the combustion control circuit and a child lock state are released when the power shut-off state by the power shut-off means exceeds a predetermined time.

  Therefore, since the locked state can be released by turning off the power, the device can be used by turning off the power when forgetting the release method.

  According to a fifth aspect of the present invention, when the child lock switch is turned on a predetermined number of times after the fire is extinguished by the ignition fire extinguishing switch, the child lock state is set after the fire extinguishing by the ignition fire extinguishing switch without turning on the child lock switch. did.

  Therefore, when it is always locked after use, it automatically becomes that state, saving the setting effort and improving usability.

  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 circuit configuration of a cooking appliance according to the first embodiment of the present invention, and FIG. 2 is an external view of the cooking appliance according to the first embodiment.

  1 and 2 show a combustion control circuit 1 that controls the combustion of a cooking appliance. A dry battery 1a is housed in a dry battery case 1b and supplies power to a microcomputer 2 that controls combustion. The switch 5 is a child lock switch, the switch 6 instructs the left stove to be ignited and extinguished, and the switches 7 and 8 adjust the heating power. Each switch 5-8 is provided in the operation part 9 of the cooking appliance, is connected to the microcomputer 2, and an on / off state is input to the microcomputer 2. The solenoid valve 3 and the igniter 4 are controlled by the output from the microcomputer 2 and perform gas valve opening and ignition during ignition and combustion. Hereinafter, the case where it cooks with a left stove is demonstrated. The child lock here indicates a locked state in which an instruction to start combustion by the ignition / extinguishing switch 6 is prohibited. Here, when the child lock is to be applied, if the child lock switch 5 is kept pressed for a predetermined time, for example, 3 seconds in a non-combusting state, the start of combustion by the ignition fire extinguishing switch 6 is prohibited, and the child can be prevented from mischief. It is.

  About the cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below using FIG. 3 which is a flowchart figure which shows an operation | movement flow.

  First, in step S1, it is determined whether the device is locked. This is determined based on the state stored in the memory of the microcomputer 2. If it is not in the locked state, the process proceeds to step S2, and it is determined whether the child lock switch 5 is pressed. If the child lock switch 5 is not pushed, the process proceeds to step S3, and the input of the ignition fire extinguishing switch 6 is judged. If the child lock switch 5 is pushed, the solenoid valve 3 is opened and the igniter 4 is discharged and ignited in step S4. Burn. If there is no input of the ignition / extinguishing switch 6 in step S3, all the processes are terminated and the next input is awaited.

  If there is an input from the child lock switch 5 in step S2, the time during which the switch is kept pressed (for example, 3 seconds) is measured in step S6, and the time is stored in the memory M1. Next, the locked state is set in step S7.

  If it is in the locked state in step S1, it is determined whether there is a child lock switch input in step S8, and if not, the next input is awaited. If there is a switch input, in step S9, the pressed time is measured and stored in the memory M2. Next, the difference between the times (for example, 3 seconds) stored in the memories M1 and M2 in step S10 is compared, and if within 0.5 seconds, the switch input in step S8 is validated and the process proceeds to step S11. Release the locked state. In this embodiment, the predetermined input time for which the child lock switch is kept pressed is set to be within 0.5 seconds at the time of setting and releasing. The range becomes narrower.

  As described above, in the present embodiment, the input time at the time of setting the child lock switch 5 is compared with the input time at the time of release, and the switch is released when it is within a predetermined time. If the time of pressing is not memorized, it cannot be released, and it is possible to prevent others from inadvertently releasing the locked state.

(Embodiment 2)
FIG. 4 is a flowchart showing an operation flow of the cooking appliance according to the second embodiment of the present invention.

  The operation and action will be described below with reference to FIG.

  In step S21, it is determined whether or not the lock state is set. If the lock state is not set, it is checked in step S22 whether or not any switch is kept pressed. For example, in the switch 7 for reducing the heating power and the switch 8 for increasing the heating power for adjusting the heating power, if there is a switch that is kept pressed, the switch that is kept pressed in step S23 is stored in the memory M3, and in step S24. Register the switch as a child lock switch.

  In step S25, the device is set to the locked state. Since the steps S3 and S4 are the same as those in the first embodiment, the description thereof is omitted.

  If it is in the locked state in step S21, it is checked in step S26 whether or not all the switches are pressed. If not, the processes in step S3 and subsequent steps are performed. If the switch is kept pressed, it is determined in step S27 whether the switch is the same as the switch stored in the memory M3 in step S23. If the switch is different, the process proceeds to step S3, and if it is the same, the locked state is released in step S28.

  As described above, in this embodiment, an arbitrary switch can be used as a child lock switch by setting a switch that is continuously pressed as a child lock switch. Therefore, only the person who knows which switch is the set switch and how long it has been pressed can be released, and once it is locked, the person who does not know cannot release it. In this way, the setting of the lock state becomes more complicated, and the child's mischief can be prevented more reliably.

  In this embodiment, the switch 7 or the switch 8 for adjusting the heating power for the left stove is set as the child lock switch, but other switches provided in the operation unit 9 are set as the child lock switch. You can also.

(Embodiment 3)
FIG. 5: is a flowchart figure which shows the operation | movement flow of the cooking appliance of the 3rd Embodiment of this invention.

  The operation and action will be described below with reference to FIG. In step S31, the lock state is determined. If the lock state is not set, the presence or absence of the child lock switch input is checked in step S32. If there is a child lock switch input in step S32, the lock state is set in step S33, and the current date and time is stored in the memory M4 of the microcomputer 2 in step S34. This date and time is counted by a clock that always operates inside the microcomputer 2.

  If it is determined in step S31 that the lock state has been established, it is determined in step S35 whether one week has passed by comparing the current date and time with the date and time stored in the memory M4, that is, the date and time previously set in the lock state. If it has not elapsed, the process ends in a locked state. If it has elapsed, the locked state is released in step S36 and the process proceeds to step S3.

  As described above, in this embodiment, it is possible to release the lock if it has been more than one week since the last time it was finally set to the locked state, and it is also possible to set the lock again after the release. Since it has a certain configuration, even if the device is left unused for a long time and forgets how to release the lock state, the device is automatically released and the device can be used.

(Embodiment 4)
FIG. 6 is a flowchart showing an operation flow of the cooking appliance according to the fourth embodiment of the present invention.

  The operation and action will be described below with reference to FIGS. In FIG. 6, it is determined in step S41 whether the power supply voltage is 2 V or higher. This is only the charge charged in the capacitor 10 when the dry battery 1a of FIG. 1 is removed from the dry battery case 1b, and the voltage drops due to consumption in the circuit such as the microcomputer 2, and this voltage is detected. If it is 2 V or less, it is judged that there is no dry battery 1a. If it is 2 V or more, it is determined that there is a dry battery 1a, and normal processing is performed after step S42.

  If it is 2V or less in step S41, the operation mode of the microcomputer 2 is switched to the low consumption mode in step S44. This lowers the power consumption by lowering the frequency of the internal clock of the microcomputer 2, so that the microcomputer 2 can be operated for a long time using only the capacitor 10. Next, if one minute has passed after checking in step S45, the locked state is released in step S46. This state is stored in a nonvolatile memory inside the microcomputer 2 and is maintained even when no power is supplied. As described above, in the present embodiment, when the battery 1a is replaced, the setting of the locked state is maintained within one minute, and the locked state is released when the state without the dry battery 1a continues for a longer time. To do.

  Accordingly, the locked state can be released by intentionally creating a state in which the dry battery 1a is removed for a long time, so that even if the user forgets the release method, the release can be performed and the device can be used. In step S41, the determination voltage for the presence / absence of the dry battery 1a is set to 2V, but this voltage is set to be equal to or higher than the operation lower limit voltage of the microcomputer 2.

  Although the configuration using a dry battery as a power source has been described here, in the case of a configuration using a commercial power source using an outlet, it is possible to cut off the power supply by disconnecting the outlet.

(Embodiment 5)
FIG. 7: is a flowchart figure which shows the operation | movement flow of the cooking appliance of the 5th Embodiment of this invention.

  The operation and action will be described below with reference to FIG.

  In step S53, the lock state is determined. If not, the process proceeds to step S3. If it is in the locked state, it is determined whether or not the child lock switch is input in step S54, and if not, all processing is passed. If there is a switch input, the locked state is released in step S55, and the memory M7 is cleared.

  Description of the steps S3 and S4 is omitted. In step S56, the input of the ignition / extinguishing switch 6 is checked. If there is an input, the electromagnetic valve 3 and the igniter 4 are turned off in step S57 to perform the extinguishing process. Thereafter, in step S58, it is determined whether the content of the memory M7 is 5 or more. If it is 5 or less, the child lock switch input is checked in step S59. If there is an input, the locked state is set in step S60 and the memory M7 is incremented. To do.

  If the content of the memory M7 is 5 or more in step S58, the locked state is set in step S61.

  As described above, in the present embodiment, if the operation of inputting the child lock switch after the fire extinguishing process is performed five times or more, then it is automatically locked after the fire is extinguished without inputting the child lock switch. Therefore, when the child lock is always set after the fire is extinguished, the trouble of pressing the child lock switch can be saved. In addition, since it is always locked, it is safe.

  In the above description of the embodiment, the child lock state is prohibited from starting combustion by the ignition / extinguishing switch, but can also be set as prohibition from extinguishing after starting combustion. Yes, and you can set it that way.

  As described above, the cooking appliance according to the present invention has a restriction on the input reception time of the switch for setting and releasing the lock state, and the time can also be changed, so the lock state cannot be easily released and erroneous operation is caused. Since it can be prevented, it can also be applied to uses such as heating equipment.

Circuit block diagram of the cooking appliance of the present invention External view of cooking appliance in Embodiment 1 of the present invention The flowchart of the cooking appliance in Embodiment 1 of this invention The flowchart of the cooking appliance in Embodiment 2 of this invention The flowchart of the cooking appliance in Embodiment 3 of this invention The flowchart of the cooking appliance in Embodiment 4 of this invention The flowchart of the cooking appliance in Embodiment 5 of this invention Circuit block diagram of conventional cooking equipment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combustion control circuit 1a Dry battery 5 Child lock switch 6 Ignition fire extinguishing switch 9 Operation part

Claims (5)

A combustion control circuit for controlling combustion; an ignition extinguishing switch for inputting an instruction for combustion to the combustion control circuit; and a child lock switch for prohibiting an instruction for combustion by the ignition extinguishing switch by pressing and holding for a predetermined time. A cooking device characterized in that the predetermined time for which the lock switch is kept pressed can be set to an arbitrary time. A combustion control circuit for controlling combustion; an ignition extinguishing switch for inputting a combustion instruction to the combustion control circuit; an operating unit provided with the ignition extinguishing switch and a plurality of switches for operating combustion states; and provided in the operating unit A cooking device in which any switch can be set as a child lock switch that prohibits an instruction of combustion by the ignition / extinguishing switch. A combustion control circuit for controlling combustion, an ignition extinguishing switch for inputting an instruction for combustion to the combustion control circuit, and a child lock switch for prohibiting an instruction for combustion by the ignition extinguishing switch, and a child lock state by the child lock switch The cooking appliance according to claim 1 or 2, wherein the cooking device is released after a predetermined time has elapsed. The cooking appliance according to any one of claims 1 to 3, wherein a power shut-off means for shutting off a power source of the combustion control circuit and a child lock state is released when a power shut-off state by the power shut-off means reaches a predetermined time or more. 5. The child lock switch according to claim 1, wherein the child lock switch is turned on after the fire extinguishing by the ignition fire extinguishing switch is performed a predetermined number of times, and thereafter the child lock switch is set to the state without turning on the child lock switch after the fire extinguishing by the ignition fire extinguishing switch. The cooking apparatus according to 1.

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