JP2937822B2 - Gas heating cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas heating cooker.

[0002]

2. Description of the Related Art Conventionally, as a gas heating cooker, a temperature sensor detects the temperature of the bottom of a pot during heating to prevent the ignition of oil in the pot and prevent the boiled food from burning. What is provided is provided (for example, a bite high-cut stove).

FIG. 2 shows a schematic configuration of a conventional gas heating cooker of this type. This gas heating cooker has a built-in controller 21 composed of a microcomputer in order to realize the above safety function. Hereinafter, the operation of the gas heating cooker will be described with reference to FIG. When the instrument plug 26 is opened, the safety valve 22 is opened, and in conjunction with this opening operation, the gas flow control valve 27 as gas flow adjusting means is opened, the instrument plug switch 24 is turned on, and the burner 16 is ignited by the igniter 18. Is done. In addition, the operation detection unit 21b of the controller 21 detects the ON operation of the appliance plug switch 24, sends a control start signal to the control unit 21a of the controller 21, and displays on the display unit 29 that the burner 16 is fired.

The dry cell 3 is used as a power source for the instrument plug switch 24. In the gas heating cooker, the temperature of the pan bottom is detected by a thermistor 28 as a pan bottom temperature sensor, and the output of the thermistor 28 is input to the controller 21a of the controller 21, and the gas flow rate is determined based on the input pan temperature. Controls the degree of opening and closing of the control valve. At this time, when the temperature at the bottom of the pot becomes equal to or higher than a predetermined upper limit temperature (for example, a temperature somewhat lower than the temperature at which oil ignites), the gas flow control valve 27 is fully closed by the output from the control unit 21a, thereby turning on the burner 16 Extinguish the flame.

[0005] The gas heating cooker without the pan bottom temperature sensor includes a burner forgetting prevention device (safety timer).
Additional functions such as are provided.

[0006]

By the way, since a dry battery is generally used as a power source for the appliance plug switch,
It is necessary to reduce the power consumption of the controller itself.
Further, it is desirable that the gas heating cooker has a plurality of burners. However, since the flame of the gas burner may extinguish (for example, due to boiling over), the outflow of unburned gas from the burner accompanying the extinguishing may occur. It is desired to have a gas outflow prevention function for preventing the gas leakage.

[0007] However, in the gas heating cooker,
There is a problem that the electromotive force of the dry battery is consumed to control the gas flow control valve. In addition, in order to increase the number of burners and add the gas outflow prevention function, the controller 21 needs to detect which burner instrument plug among a plurality of burners has been operated.
There is a problem that the circuit configuration becomes slightly complicated and the manufacturing cost increases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a low-cost gas heating cooker which consumes a small amount of power and has a function of preventing gas outflow due to burnout of a burner flame. It is in.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides one or more igniters for igniting each of the burners in conjunction with the operation of a plurality of burners and a plurality of instrument plugs. When a plurality of thermocouples for detecting the state of the burner flame, to open respectively in conjunction with and said plurality of plug fitting respective open operation provided each of the plurality of gas passages each to said plurality of burners each Depending on the safety valve and the opening and closing of each device stopper
Via a parallel circuit of multiple appliance plug switches, each turning on and off
Connected to a power source consisting of batteries
A control unit that shuts off power when the power is off.
Corresponds only while the thermoelectromotive force of the thermocouple is being generated.
Supply a current for maintaining the open state of the safety valve to the safety valve.
It is characterized by the fact that when all appliance plug switches are off
Power is not supplied from the power supply to the control unit, and
When there is a burner that has disappeared, the thermocouple corresponding to the burner
Loss of thermoelectromotive force and current to safety valve corresponding to the burner
And the safety valve is closed, reducing power consumption.
Gas heating with a function to prevent gas outflow due to disappearance
A cooker can be obtained at a lower cost than before.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. As shown in FIG. 1, the gas heating cooker of the present embodiment has a first burner 6a and a second burner 6b, and opens and closes a first appliance plug 7a and a second appliance plug 7b, respectively. Thus, the first burner 6a and the second burner 6b are ignited and extinguished, respectively. In addition, the first safety valve 2a and the second safety valve 2b are each usually provided with the first instrument plug 7a and the second safety valve 2b.
Is opened and closed in conjunction with the opening and closing operation of each of the appliance plugs 7b.

Hereinafter, the operation of the gas heating cooker will be described with reference to FIG. For example, when the first instrument plug 7a is opened,
Safety valve 2a opens and the first instrument plug switch 4a
Is turned on, and the first burner 6a is ignited by the first igniter 8a. When the first appliance plug switch 7a is turned on (either the first appliance plug switch 7a or the second appliance plug switch 7b is turned on), the controller 1
The operation detection unit 1b detects that either the first appliance plug switch 7a or the second appliance plug switch is turned on, and the operation detection unit 1b sends a control start signal to the control unit 1a of the controller 1. Here, the first appliance plug switch 7
The dry cell 3 is used as the power source of a.

When the first burner 6a ignites normally, the first thermocouple 5a is blown with a flame, and the first thermocouple 5a generates a thermoelectromotive force. When the control unit 1a of the controller 1 detects this thermoelectromotive force, the control unit 1a causes the battery 3 to supply a holding current for maintaining the first safety valve 2a in the open state to the first safety valve 2a. When the first instrument plug 7a is closed, the first safety valve 2a is closed.

When the second instrument plug 7b is opened in this state,
Safety valve 2b is opened and the second appliance plug switch 4b
Is turned on, and the second burner 6 is turned on by the second igniter 8b.
b is ignited. Similarly, when the second burner 6b ignites normally, the second thermocouple 5b generates a thermoelectromotive force. When the control unit 1a of the controller 1 detects this thermoelectromotive force, the control unit 1a causes the battery 3 to supply a holding current for maintaining the second safety valve 2b in an open state to the second safety valve 2b.

When the second instrument stopper 7b is closed, the second instrument stopper 7b is closed.
The safety valve 2b is closed. Each thermocouple 5
The thermoelectromotive forces a and 5b are input to the controller 1a of the controller 1. For example, if the flame of the first burner 6a goes out, the thermoelectromotive force of the first thermocouple 5a is lost. The control unit 1a transmits the first safety valve 2 from the battery 3.
The flow of the holding current for keeping the first safety valve 2a in the open state is stopped. Therefore, the first safety valve 2a is automatically closed, so that gas outflow due to disappearance is prevented.

In the present embodiment, the first burner 6
a and the second burner 6b are separately ignited by a first igniter 8a and a second igniter 8b, respectively.
A high voltage may be supplied to the ignition needles provided in each of a and 6b to ignite with a single igniter capable of igniting a plurality of burners.

[0016]

According to the present invention , a plurality of burners and a plurality of appliances are provided.
One burner that ignites each burner in conjunction with the operation of each plug
Or a plurality of igniters, a plurality of thermocouples for detecting a state of the flame of the burner, and a plurality of gas flow paths to each of the plurality of burners, each of which is provided for opening operation of each of the plurality of instrument plugs. Open the safety valve that opens in conjunction with each
A series of multiple instrument plug switches that turn on and off when closed
Connected to a power source consisting of batteries via a column circuit
When the switch is off, there is a control unit that shuts off the power.
In addition, the control unit controls whether or not the thermoelectromotive force of the thermocouple is generated.
Only the current that holds the open state of the corresponding safety valve
The power is supplied to the valve so that when all appliance switches are off,
Power is not supplied to the control unit from the source, and the flame goes out.
If there is a burner, the thermoelectromotive force of the thermocouple corresponding to the burner
There is no power and there is no current to the safety valve corresponding to the burner.
Since the safety valve is closed, there is an effect that it is possible to obtain a gas heating cooker having low power consumption and having a function of preventing gas outflow due to disappearance at a lower cost than before.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment.

FIG. 2 is a schematic configuration diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Controller 2a 1st safety valve 2b 2nd safety valve 3 Battery 4a 1st appliance plug switch 4b 2nd appliance plug switch 5a 1st thermocouple 5b 2nd thermocouple 6a 1st burner 6b 2nd burner 7a first appliance plug 7b second appliance plug 8a first igniter 8b second igniter

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24C 3/12 F23D 14/72 F23N 5/10 330

Claims (1)

(57) [Claims] 1. A plurality of burners, one or more igniters for igniting each of the burners in conjunction with the operation of each of the plurality of appliance plugs, and a plurality of thermocouples for detecting a state of flame of the burner. A safety valve provided in each of a plurality of gas flow paths to each of the plurality of burners and opened in conjunction with an opening operation of each of the plurality of appliance plugs, and according to opening and closing of each of the appliance plugs.
Via a parallel circuit of multiple appliance plug switches, each turning on and off
Connected to a power source consisting of batteries
A control unit that shuts off power when the power is off.
Corresponds only while the thermoelectromotive force of the thermocouple is being generated.
Supply a current for maintaining the open state of the safety valve to the safety valve.
Gas heating cooker according to claim Rukoto.