Gas stove with start-up prompt and timed flameout device

Abstract

This invention relates to a timed flameout device for gas stoves with a start-up prompt. The solenoid valve of the gas stove burner is kept open by a battery. The timed flameout device can be selectively connected to one of the multiple burner burners of the gas stove. When the timer ends, the battery power can be cut off to force the solenoid valve to close and extinguish the flame. The key feature is that the microprocessor is electrically connected to a start-up circuit linked to the corresponding burner burner and an alarm circuit equipped with a buzzer. When the corresponding burner burner is put into use, the start-up circuit synchronously triggers the microprocessor to start the timed flameout device, and simultaneously drives the buzzer of the alarm circuit to emit a start-up prompt sound, thereby reminding the user and distinguishing whether the burner in use is equipped with a timed flameout device.

Claims

1. A timed flameout device for a gas stove with a start-up prompt, the gas stove having a plurality of burner openings, each burner opening having a solenoid valve powered by a battery to maintain gas supply, the timed flameout device being selectively connected to the solenoid valve on one of the burner openings, and comprising a microprocessor, a timed valve-closing module, and a valve-closing circuit electrically connected to each other, the microprocessor being able to execute the timed valve-closing module to perform timing, and, upon completion of timing, interrupting battery power through the valve-closing circuit to close the solenoid valve and extinguish the flame; characterized in that: the microprocessor is electrically connected to a start-up circuit linked to the corresponding burner opening, and electrically connected to an alarm circuit equipped with a buzzer, when the corresponding burner opening is put into use, the start-up circuit triggers the microprocessor to start working, the microprocessor being able to synchronously drive the buzzer of the alarm circuit to emit a start-up prompt sound, to distinguish whether the burner opening of the gas stove in use is equipped with a timed flameout device.

2. The gas stove timing and shut-off device with start-up prompt as described in claim 1, characterized in that: the start-up circuit can be selectively linked with the digital ignition switch of the corresponding stove opening, so that when the digital ignition switch of the corresponding stove opening is ignited, the timing and shut-off device can be activated synchronously through the start-up circuit, and a start-up prompt sound can be emitted through the microprocessor and the warning circuit.

3. The gas stove timing and shut-off device with start-up prompt as described in claim 1, characterized in that: the start-up circuit includes a linkage switch, which is selectively disposed around a rotary switch of the corresponding burner opening and linked with it, so that when the rotary switch of the corresponding burner opening is started to ignite, the timing and shut-off device can be activated synchronously through the linkage switch of the start-up circuit, and a start-up prompt sound is emitted through the microprocessor and the alarm circuit.

4. The gas stove timing and shut-off device with start-up prompt as described in claim 1, characterized in that: the start-up circuit is a flame sensing circuit disposed around the corresponding burner opening of the gas stove, and when the flame sensing circuit senses that the corresponding burner opening has started to burn, it can transmit a signal to the microprocessor, causing the warning circuit to emit a start-up prompt sound.

5. The gas stove timing shut-off device with start-up prompt as described in claim 4, characterized in that: the flame sensing circuit can transmit the sensed flame size signal to the microprocessor, so that the microprocessor can automatically adjust the valve closing time of the timing valve closing module according to the flame size signal.

6. The gas stove timing shut-off device with start-up prompt as described in claim 1, characterized in that: a thermocouple flame sensing circuit is provided at the corresponding burner opening of the gas stove, and the microprocessor is electrically connected to the thermocouple flame sensing circuit, so that the thermocouple flame sensing circuit can transmit the sensed flame size signal to the microprocessor, so that the microprocessor can automatically adjust the valve closing time of the timing valve closing module according to the flame size signal.

7. A gas stove timing and shut-off device with start-up prompt as described in any one of claims 1 to 6, characterized in that: when the microprocessor finishes timing the valve-closing module and de-energizes the solenoid valve to shut off the flame through the valve-closing circuit, the microprocessor drives the buzzer of the warning circuit to emit a shut-off prompt sound so that the user can confirm that the timing and shut-off device has been used.

8. A gas stove timing shut-off device with start-up prompt as described in any one of claims 1 to 6, characterized in that: the timing shut-off device comprises a housing with an internal accommodating space, and a circuit board disposed within the accommodating space of the housing, the circuit board being configured with a microprocessor, a timing valve-closing module, a valve-closing circuit, a start-up circuit, and an alarm circuit, and the housing is provided with a mounting hole communicating with the accommodating space on the outside, and the buzzer is fixed on the mounting hole and electrically connected to the circuit board.

9. A gas stove timing and shut-off device with start-up prompt as described in any one of claims 1 to 6, characterized in that: the microprocessor has a built-in rapid test module capable of performing a short-term timing and then power-off to shut off the solenoid valve; and the microprocessor can receive start-up signals from most of the gas stove's burners; when the microprocessor receives the start-up circuit signal and simultaneously receives a one-time or intermittent multiple start-up signal from another burner, the microprocessor can execute the rapid test module to ensure that the timing and shut-off device can normally perform the timing and shut-off function.

10. A gas stove timing and shut-off device with start-up prompt as described in any one of claims 1 to 6, characterized in that: the microprocessor has a built-in rapid test module that can perform a short-time timing and then cut off the power to shut off the solenoid valve; when the microprocessor continuously receives the start-up signal from the start-up circuit for more than a set time, the microprocessor can execute the rapid test module to ensure that the timing and shut-off device can perform the timing and shut-off function normally.

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