JPS62293016A - Gas appliance with time limit device - Google Patents

Abstract

PURPOSE:To make it possible to shut off a gas supply route without requiring a control device by applying an electromotive force in the direction opposite to the electromotive force of an thermocouple to a circuit of a thermo-valve and the thermocouple after a certain time which is arbitrarily set has passed. CONSTITUTION:When a gas burner 1 is ignited, a thermocouple 2 produces an electromotive force, and a coil 3b is magnetized to maintain a thermo-valve 3a open. When a time that is set by a time switch 6 has passed, a change-over contact point 6a is cut from the connections between a large capacity capacitor 5 and a direct current power source 4 and a capacitor 5 is connected to a circuit with the coil 3b of the thermocouple 2. Since at this time the electromotive force generated from the thermocouple 2 and the electromotive force stored in the capacitor 5 are connected in such a way that they are mutually opposite in their directions, the coil 3b loses its magnetism and the gas supply to the gas burner 1 is closed.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Industrial Application Field The present invention relates to gas appliances such as gas grills and gas stoves, which are equipped with a timer that stops gas P and brine after an arbitrary period of time has elapsed. It is.

BACKGROUND OF THE INVENTION Generally speaking, gas grills and gas stoves do not have a timer, and a gas oven is an example of a gas appliance equipped with a timer. The second configuration of a general gas open with a timer
To explain based on the figure, a gas burner 1, a solenoid valve 2 for opening and closing a gas supply path to the gas burner 1, a timer 3, a thermistor 4 serving as a chamber temperature detection means, a control device 5, It is equipped with an ignition device 6 for the gas burner, and a thermocouple 7 for detecting the flame of the gas burner, and a thermistor 4 detects the internal temperature at an arbitrary set temperature, and the solenoid valve 2 is controlled via the control device 5. It is configured to control the internal temperature by turning ON-OFF. Further, the solenoid valve 2 is turned off by the timer 3 after an arbitrary set time has elapsed, and the operation is stopped. The ignition device 6 is activated at the same time as the solenoid valve 2 is turned on. Further, the thermocouple 7 is used to detect when the flame of the gas burner 1 is extinguished due to some abnormality, and to ensure the safety of the electromagnetic valve 2 at 0FFL.

As mentioned above, in the case of gas open, the above-mentioned configuration is required from cooking E, but gas
In the case of a gas stove, a temperature control function is not particularly necessary, and the gas burner 1 is attracted and held by the thermoelectromotive force generated by the gas burner 1, a thermocouple for detecting the flame of the gas burner, and the thermocouple 2. It has a simple configuration that includes a solenoid valve 2 that opens and closes a gas supply path to.

Problems to be Solved by the Invention However, in recent years, there has been a demand for gas cookers and gas stoves with a timer, but they require a solenoid valve 2 and a control device 5 like the gas opener mentioned above. The problem with drawing is that it is expensive and cannot be put to practical use. The present invention solves this problem and provides a simple and inexpensive gas appliance with a timer.

Means for Solving the Problems The gas appliance with a timer according to the present invention includes a thermovalve, a thermocouple that attracts and holds the thermovalve and opens the thermocouple, and a gas burner.
A timer and a DC power generation means are added to this, and an electromotive force in the opposite direction to the electromotive force of the thermocouple is applied to the circuit between the thermovalve and the thermocouple after an arbitrary set time elapses to force the thermovalve. It was opened so that the gas supply path could be cut off.

Function: The gas appliance with a timer of the present invention does not require temperature control like Ganugu U/Shiya gas stoves, etc., and can be used to open the gas when the gas supply path is simply shut off after an arbitrarily set time has elapsed. As described above, it is possible to provide an inexpensive gas appliance with a timer with a simple structure without requiring expensive solenoid valves and control devices.

EXAMPLE Hereinafter, a gas appliance with a timer according to an example of the present invention will be described with reference to the drawings.

Figure 1 shows the state during gas burning and smoking, where a thermocouple 2 is placed at a position that receives the flame of the gas burner 1.
and coil v3b of the thermovalve 3a are electrically connected. On the other hand, the DC power source 4 and the large-capacity capacitor 5 are electrically connected via a time switch 6, which is a time limit device, and after the arbitrarily set time of the time switch 6 has elapsed, the switching contact 6a of the time switch 6 is switched. Accordingly, the capacitor 5 is electrically connected to the circuit between the thermocouple 2 and the coil/L/3b of the thermovalve 3a via the time switch 6. The ignition device 7 is electrically connected to the DC power source 4 via an ignition switch 9 that is interlocked with an ignition knob 8. 10 is a gas intake port.

To explain the operation in the above configuration, when the gas flows in from the gas intake port 10, the thermo valve 3a is forcibly opened by pressing the ignition knob 8, and the gas burner 1
supplied to At the same time, the ignition knob 8 moves to turn the ignition switch 9 ON and the ignition device 7 discharged. When the gas burner 1 is ignited, the thermocouple 2 is heated by the flame and a thermoelectromotive force is generated, which causes the coil zLz3b of the thermovalve 3a to
is magnetized and attracts and holds the thermovalve 3a to keep it in the open state. On the other hand, when an arbitrary time is set using the time switch 6, the DC power supply 4 and the large capacity capacitor 5 are electrically connected and charging of the capacitor 5 begins.

Next, when the time set by the time switch 6 has elapsed, the switching contact 6a electrically disconnects the large capacity capacitor 5 and the DC power supply 4, and the large capacity capacitor 5 connects the thermocouple 2 and the coil of the thermovalve 3a. Electrically connected to the circuit with L/3b. At this time, since the thermoelectromotive force generated by the thermocouple 2 and the electromotive force stored in the large-capacity capacitor 5 are connected in opposite directions, the coil/v3b of the thermovalve 3a instantaneously generates magnetic electricity. Lost thermo valve 3a
is separated and the gas supply path to the gas burner 1 is closed.

As described in detail about the invention, the timer of the present invention [gas appliances are thermostatted by forcibly applying an electromotive force in the opposite direction to the electromotive force generated by the thermocouple after an arbitrary set time elapses to the thermovalve. It has a configuration that forcibly removes the valve and cuts off the gas supply path to the gas burner.It is a simple configuration and inexpensive timer that does not require expensive solenoid valves and complicated control circuits like those used in gas ovens. A gas appliance with a device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of a gas appliance with a timer according to the present invention, and FIG. 2 is a circuit diagram of a conventional gas appliance with a timer. 1... Gas burner, 2... Thermocouple,
3...Thermo valve, 4...DC power supply, 5...Capacitor (DC power generation means), 6
・・・・・・Time Nuitch (time limit device). Name of agent: Patent attorney Toshio Nakao and 1 other person/-
---Katana Sunoguna 2---? ! ! ,,Scary size 3 peaks - Thermo valve 3 - Boomo valve coil 4 - Souku' Gen 5 - Large breath capacitor O - Time switch input 7 - Natural fire 1 1 O゛Meanwhile, 1st input ↑ p゛vinegar

Claims (2)

[Claims] (1) A gas burner, a thermocouple that generates a thermoelectromotive force in response to the flame of the gas burner, a thermovalve that is connected to the thermocouple and opens and closes a gas supply path to the gas burner, a timer, and a direct current power generation means, and the timer applies an electromotive force by the DC power generation means to the circuit between the thermocouple and the thermovalve in a direction opposite to the electromotive force of the thermocouple after the arbitrary set time has elapsed. A gas appliance with a timer configured to forcibly disengage the thermovalve and cut off gas supply to the gas burner. (2) A gas appliance with a timer according to claim 1, in which a large-capacity capacitor is used as the DC power generation means.