JPH062840A - Safety device in gas range - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent accidents such as fire caused by forgetting to put on the gas stove. [Configuration] A human body detection sensor 7 is attached to the gas stove, and the presence of a cook is detected by the human body detection sensor 7,
Immediately extinguish the fire immediately if not separated for a certain time. [Effect] Even if you forget to leave the stove and forget that you are using the stove while using the gas stove, the fire is automatically extinguished, so there is no risk of fire and it is safe.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a gas stove (gas table).

[0002]

2. Description of the Related Art A conventional gas stove has a structure in which, after once igniting and starting cooking, the cook continues burning even if the cook leaves the place.

[0003]

For this reason, if the cook forgets to leave the gas stove on fire, he or she may overheat the oil or cause a fire due to empty cooking.

An object of the present invention is to provide a safety device which does not cause an accident such as a fire caused by a gas stove.

[0005]

The structure of the safety device in the gas stove according to the present invention is as follows.

A human body detection sensor for detecting a person existing in front of and in the vicinity of the gas stove body is attached, and when the human body detection sensor detects the presence of a person, the gas stove is continuously used, A safety device for a gas stove, which is provided with a control circuit for automatically extinguishing the gas stove when a certain monitoring time elapses after the person is no longer detected but the person is not detected.

The following functions can be added to the above device.

A. If the human body detection sensor does not detect a person and a certain monitoring time elapses but no person is detected, an alarm is first issued and the gas stove is turned on when the alarm is issued for a certain period of time. Extinguish automatically.

B. If the human body detection sensor does not detect a person but does not detect a person even after a certain monitoring time elapses, first reduce the gas amount, and then when a certain grace period elapses from when the gas amount starts to be reduced, the gas stove Extinguish automatically.

C. When a person is detected while the human body detection sensor stops detecting the person while counting a certain monitoring time, or when a person is detected within the grace period, the counting is canceled.

D. The monitoring time and grace time can be set and released arbitrarily.

E. The detection level of the human body detection sensor is set in front and in the vicinity of a certain height or higher so that the human body function sensor does not detect the child in the case of mischief of the child.

F. If the human body detection sensor fails, immediately extinguish the gas stove automatically.

[0014]

When the cooker is ignited and the cooker is in front of or in the vicinity of the gas cooker, the human body detection sensor confirms the cooker's presence and outputs a cooker presence signal to the control circuit side. Then, when the cook leaves the gas stove and comes out of the detection range of the human body detection sensor, a signal indicating the absence of the cook is input to the control circuit. The control circuit starts counting as soon as this absence signal is input,
The gas stove is automatically extinguished when a preset time, that is, the monitoring time has elapsed. However, when the cook is detected again within the monitoring time, the counting up to that point is canceled, and when the cook is no longer detected again, the counting of the monitoring time is started again.

In the case of a device with an alarm device, an alarm is issued when the monitoring time has elapsed, and in the case of a device with a device for restricting the gas amount, the gas amount is reduced, and this alarm and the gas amount are started for a certain period of time. After the time has passed, that is, after the grace period has passed, the automatic fire extinguishing is performed. If you want to release or change the monitoring time and grace period (safety device), you can use the release or change knob (switch) etc. If the human body detection sensor fails, automatic fire extinguishing will be performed immediately.
However, in this case, the safety device can be released and the gas stove can be used.

[0016]

EXAMPLE FIG. 1 shows an example of the present invention.

1 is a gas stove body, 2 is a gas burner, 3
Is a gas line, 4 is a gas line, 5 is a shutoff valve (solenoid valve), 6 is an ignition button, 7 is a human body detection sensor, and 8 is a control circuit to perform the following control.

When the ignition button 6 is pressed to ignite the gas burner 2 of the gas stove, and when the cook is in front of or in the vicinity of the gas stove, the human body detection sensor 7 confirms the existence of the cook and confirms the presence of the cook. The signal is output to the control circuit 8 side. When the cook leaves the gas stove and goes out of the detection range of the human body detection sensor 7, the control circuit 8 receives a signal indicating that the cook is absent. The control circuit 8 starts counting immediately when this absence signal is input, and sends a signal to the shutoff valve 5 to automatically extinguish the gas stove (gas burner 2) when a preset time, that is, the monitoring time has elapsed. . However, when the cook is detected again within the monitoring time, the counting up to that point is canceled, and when the cook is no longer detected again, the monitoring time is counted again from the beginning.

In the case of a device with an alarm device, an alarm is issued when the monitoring time has elapsed, and in the case of a device with a device for restricting the gas amount, the gas amount is restricted, and this alarm and a fixed time during which the gas amount is restricted. Automatic fire extinguishing is performed after lapse of time, that is, after the grace period. Next, if it is desired to cancel or change the monitoring time and the grace period (safety device), an arbitrary operation is performed with a cancellation or change knob (switch).
When the human body detection sensor 7 fails, automatic fire extinguishing is immediately performed. However, in this case, the safety device can be released and the gas stove can be used.

[0020]

The effects of the present invention are as follows.

A. The human body detection sensor constantly monitors the presence of the cook, and when the cook leaves the gas stove,
In order to automatically extinguish the gas stove when the time immediately starts counting and this time exceeds a predetermined time,
It's safe to leave the gas stove and forget "you're in a rush" to use it.

B. By setting the human body detection sensor at a certain height, when the child mischiefs and ignites, the human body detection sensor does not detect the child, so that counting starts immediately and the fire is extinguished automatically, which is safe.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a safety device in a gas stove according to the present invention.

[Explanation of symbols]

 1 Gas cooker body 2 Gas burner 3 Gotoku 4 Gas line 5 Cutoff valve 6 Ignition button 7 Human body detection sensor 8 Control circuit

Claims (7)

[Claims] 1. A human body detection sensor for detecting a person existing in front of and in the vicinity of the gas stove body is attached, and when the human body detection sensor detects the presence of a person, the gas stove is continuously used. A safety device for a gas stove, which is provided with a control circuit for automatically extinguishing the gas stove when a certain monitoring time elapses after the person is no longer detected but no person is detected. 2. If a human body detection sensor does not detect a person and a certain monitoring time elapses but no person is detected, an alarm is first issued, and the time during which this alarm is issued passes a certain grace time. The safety device for a gas stove according to claim 1, further comprising a control circuit for automatically extinguishing the gas stove when fired. 3. When the human body detection sensor does not detect a person, but does not detect a person even after a certain monitoring time elapses, first, the gas amount is narrowed down, and a fixed delay time is set from when the gas amount starts to be narrowed down. The safety device for a gas stove according to claim 1 or 2, wherein the safety device incorporates a control circuit for automatically extinguishing the gas stove when the time has passed. 4. When the human body detection sensor detects a person while the human body detection sensor stops detecting the person during a certain monitoring time, or when the human body detection sensor detects a person within the grace period, the time counted until then. The safety device for a gas stove according to claim 1, 2, or 3, wherein a control circuit for canceling the above is incorporated. 5. The safety device for a gas stove according to claim 1, 2, 3, or 4, wherein the monitoring time and the grace period can be set and canceled arbitrarily. 6. The human body detection sensor according to claim 1, wherein detection levels of the human body detection sensor are set in front of and near a certain height.
The safety device for the gas stove described in 3, 4, and 5. 7. A safety device for a gas stove according to claim 1, 2, 3, 4, 5, or 6, comprising a control circuit for automatically extinguishing the gas stove immediately when the human body detection sensor fails.