JPS60245926A - Safety device of cooking apparatus - Google Patents

Abstract

PURPOSE:To improve the safety of the cooking apparatus by noticing a user of the opening and closing state of a valve through a buzzer or the like. CONSTITUTION:A control circuit 2 opens a principal valve 3 by means of an ignition switch 1. Simultaneously, a manually-operated safety valve 4 is opened. A gas passes through a gas pipe reaching a burner 5 and being ignited. After ignition, a control valve 8 is opened and closed by a signal from a cooking menu switch 6 and a signal from a sensor 7 thereby to carry out automatic cooking. After the control circuit 2 detects completion of cooking or when an accidental fire is detected by a thermocouple 9, a closing signal is fed to the principal valve 3 to close the same. When an extraordinary matter such as an accidental fire or the like occurs, the principal valve 3 is closed by the control circuit 2. However, the manually-operated safety valve is kept open unless a fire-extinguishing switch 10 is pushed. Therefore, when the condition of the fire-extinguishing operation is input to the control circuit 2 and the safety valve 4 is kept open inspite of the principal valve 3 being closed, a signal is introduced to a buzzer circuit 11 to inform it to the user.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is an automatic cooking device in which a buzzer notifies the safety valve to close when there is a mismatch between the gas main valve and the manual safety valve, thereby increasing the safety of the cooking utensil. This article relates to a safety device for cookers that improves safety.

Conventional Structure and Problems In this type of cooking device, as shown in FIG. 1, an ignition switch 1 sends a signal to a control circuit 2 to open a source valve 3, and an associated safety valve 4 opens.

The gas passes through the gas pipe and reaches the bar 5, where it is ignited.

After igniting, the signal from the cooking menu switch 6 and the sensor 7
The control valve 8 is opened and closed in response to the signal, and automatic cooking is performed.

After the control circuit 2 detects the completion of cooking or when a misfire is detected by the thermocouple 9, it sends a closing signal to the main valve 3.

However, the safety valve 4 does not close unless the user realizes that the fire is extinguished and presses the fire extinguishing switch 10. In this configuration,
Even though a manual safety valve 3 is installed in series with the main valve 3 to improve safety, there are problems in which the safety valve 4 is left open when there is a misfire or when cooking is complete. Ta.

OBJECTS OF THE INVENTION An object of the present invention is to improve the safety of a cooking appliance by notifying the user of the open/closed state of a valve using a buzzer in order to solve the conventional problems.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. Note that the same members as in FIG. 1 are given the same numbers.

The control circuit 3 opens the main valve 3 by means of the ignition switch 1 . At the same time, the manual safety valve 4 opens.

The gas reaches the burner 5 passed through the gas pipe and is ignited. After igniting, the control valve 8 is opened and closed in accordance with the signal from the cooking menu switch 6 and the signal from the sensor 7 to perform automatic cooking. After the control circuit 2 detects the completion of cooking or when a misfire is detected by the thermocouple 9, it sends a close signal to the main valve 3 and closes it. In the event of an abnormality such as a misfire, the main valve 3 is closed by the control circuit 2, but the manual safety valve 4 remains open unless the fire extinguishing switch 10 is pressed. Therefore, the state of the fire extinguishing switch is input to the control circuit 2, and even though the main valve 3 is closed, the safety valve 4
When it is left open, a signal is sent to a buzzer circuit 11 to notify the user.

Figure 3 shows the process when the safety valve is left open. During the cooking sequence, misfire and cooking completion are checked, and when either is Yes, a signal is issued to close the main valve. After the main valve is closed, the on/off status of the fire extinguishing switch is checked, and if it is still off (when the safety valve is open), a buzzer notifies the user.

(The notification buzzer may be a continuous sound or a single sound.) When the fire extinguishing switch is turned on (when the safety valve is closed), the buzzer stops and ends. Furthermore, when assembling a control circuit using a microcomputer or the like, this fire extinguishing switch can also be used to turn off the power to the microcomputer and the control circuit. This configuration has the effect of automatically cooking and notifying the user if he or she forgets to close the safety valve for gas, etc., and has the effect of improving safety.

Effects of the Invention As described above, according to the cooker safety device of the present invention, the gas valve of a conventional automatic cooker cannot be opened or closed by a signal from the control circuit, even though there is a manual safety valve for safety. All you had to do was open and close the valve. This is because even in an abnormal situation where the main valve is closed and the safety valve is closed, the user is not notified of the same, so the valve remains open. Therefore,
This has the effect of improving the safety of cooking utensils by using a buzzer to notify the user to close the manual safety valve.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional automatic cooking device, FIG. 2 is a block diagram of a safety device of a cooking device according to an embodiment of the present invention, and FIG. 3 is a schematic flowchart of the process. 2... Control circuit, 3... Main valve, 4... Safety valve, 5... Burner, 10. Fire extinguishing switch, 11.
...Buzzer circuit. Name of agent: Patent attorney Toshio Nakao and one other person.

Claims (1)

[Claims] A burner for heating the food to be cooked, a main valve, a manual safety valve and a control valve provided in a gas passage leading to the burner, a sensor for detecting the temperature of the food to be cooked, and a control valve for controlling the control valve in accordance with a signal from the sensor. It has a control circuit that outputs a signal that opens and closes the main valve and closes the main valve when cooking is completed or when there is an abnormality in the event of a misfire. A safety device for cookers that has a buzzer circuit that detects and issues a buzzer alarm.