JP2757517B2 - Gas cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a gas cooker used at home and the like.

2. Description of the Related Art A conventional gas cooker of this type is disclosed in Japanese Utility Model Laid-Open No. 59-132003. This device is provided with a thermocouple element on the side of the burner and is electrically connected to a thermo-valve disposed in a cock for controlling fuel supply. ) Is connected in series to detect the temperature of the pan by contacting the pot, and when the temperature of the pan rises above a predetermined temperature, the detection section operates to open the circuit and opens with the electromotive force of the thermocouple element. The thermo valve in the state is closed so that the electric circuit is shut off, the fuel supplied to the burner is shut off, and the combustion in the burner is stopped to prevent the pot from being abnormally heated. Have been.

PROBLEM TO BE SOLVED BY THE INVENTION In such a conventional gas cooker, in the case of a cooked or fried food cooked with a pot placed on a mounting table, the combustion flame is directed outward by a draft of combustion heat. As it flows, the temperature detector can accurately detect the temperature of the pan, and when the temperature of the pan rises above the set temperature of the temperature detector, it detects this and opens the circuit to cut off the fuel supply. Abnormal heating can be prevented, and danger can be prevented.

However, the types of cooking are not only boiled and fried,
There are also stir-fried dishes and grilled dishes.In the case of such cooking, move the pan on the mounting table for the stir-fried dishes, or float it from the mounting table and move it up and down, up and down, and heat and cook the food evenly. Work is performed. During such an operation, the above-mentioned draft is disturbed, and sometimes the combustion flame reaches the temperature detecting section.

Further, in the case of a grilled product, the combustion flame may reach the temperature detection unit due to an upward draft or draft resistance of the grilled product itself.

In the case of cooking such a stir-fry or grilled food, the arrival of the combustion flame at the temperature detection unit is a heating to the temperature detection unit irrelevant to cooking, and the temperature detection unit is operated, and sometimes the temperature detection unit is operated. There was a problem that the fuel supply was stopped during cooking.

In order to solve such a problem, there is a configuration in which a temperature detector is formed by a thermistor to detect a temperature, and the resistance value is compared with a resistance value set by a volume to control fuel supply. . According to such a configuration, the resistance value of the volume can be freely set as a temperature value.
The problem can be solved by setting the maximum set temperature to a temperature at which the problem described above is solved. However, this method has a problem that a complicated electric circuit configuration is required and the price is high.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide an inexpensive gas cooker which can cope with various types of cooking, has high safety, and is inexpensive.

Means for Solving the Problems In order to achieve the above object, the present invention provides a burner, a temperature detector for detecting a temperature of a heated portion disposed at the center of the burner so as to be movable up and down, A thermocouple element disposed on a side for detecting a flame, a thermo-valve for controlling fuel supplied to the burner, which is opened and closed by operation of a first operation unit, and operation of a second operation unit A switch that opens and closes the switch, connects the temperature detection unit and the switch in parallel, and connects the parallel circuit in series to one end of the thermocouple element and one end of the thermo valve, and the other end of the thermocouple element. And the other end of the thermovalve are connected to form a closed circuit, and the switch is opened in conjunction with the operation of the first operation unit, and the switch is opened by the operation of the first operation unit. Sui by opening and closing operation of the operation unit 2 Priority is given to opening and closing the switch.

Operation The present invention has the above-described configuration. (1) When cooking or fried food, when the first operating unit is operated to open the cock, fuel is supplied to the burner and combustion starts, and the thermocouple element is heated. A voltage is applied to the thermovalve, and the thermovalve is kept open. And
When the heated part (hereinafter referred to as a pot) rises to a predetermined temperature and the temperature detecting part detects the temperature, the temperature detecting part opens and cuts off the voltage application to the thermovalve, thereby closing the thermovalve and burning. Is stopped. In this case,
Since the second operation unit is not operated, the switch is open.

(2) In the case of next stir-fry or grilling, the user operates the second operation unit to close the switch, and then operates the first operation unit to cook by burning the burner in the same manner as in (1) above. . During the cooking, as described in the description of the conventional example, the temperature detecting section receives the flame and rises in temperature, and sometimes reaches a temperature exceeding the predetermined temperature and opens the temperature detecting section. Since the switch is closed by operating the operation unit, the voltage from the thermocouple element is applied to the thermovalve, and the thermovalve is kept open to continue burning, so that cooking can be continued. .

(3) When the cooking in (2) is completed in this way, the first operating section is operated to close the cock and stop supplying fuel to the burner. The first operation unit is configured to open a switch in conjunction with the operation of closing the cock, and is configured to be opened prior to opening and closing of the switch by operation of the second operation unit. After the combustion is stopped by the operation of the first operation unit, the first
When the combustion is started by the burner by the operation of the operation section, the combustion state is automatically set to the same as the cooking in the above (1).

As described above, by operating the first operation unit and the second operation unit in accordance with the cooking of boiled food, fried food, or stir-fry or grilled food, it is possible to control the temperature of the pot and to prevent unexpected cooking. The stop of combustion can be prevented, and further, if the fuel supply is stopped at the first operation unit after the cooking by the operation of the second operation unit, the fuel is automatically generated by the operation of the next first operation unit. Supply is possible.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In FIG. 1, a gas cooker 1 includes a burner 2, a temperature detector 3 which can be moved up and down at the center of the burner 2, a thermocouple element 5 arranged on a side of a burner 4 of the burner 2, Part 4
The cock 6 which supplies fuel to each is arrange | positioned.

The cock 6 is provided with a thermo valve 7 for controlling the supply of fuel. One end of a coil 8 for driving the thermo valve 7 is provided at one end of the thermocouple element 5 and the other end is provided at the temperature detecting section 3. Each is electrically connected to one end of a sensor (not shown). The other end of the temperature sensor is connected to the other end of the thermocouple element 5 to form a closed circuit.

A first operating part 9 forcibly opening the thermo valve 7 and also opening the fuel flow passage is lightly attached to the cock 6, and a cock opening / closing rod 10 is connected to the first operating part 9, The opening / closing rod 10 can perform push-push type fuel supply and stop operations using a heart cam mechanism (not shown).

The inner operating surface of the first operating unit 9 is elastically contacted with an elastic contact portion 12 of an operation threat 11.
By operating the switch, the switch 14 (see FIG. 2), which will be described later, opens and closes, and the switch 15 comes into contact with one piece of the tongue board, and the switch 15 rotates in the direction of arrow A in FIG. It is made to let.

The switch opening / closing arm 15 has a tongue piece 18 which is in contact with the actuator of the switch 14. The switch opening / closing arm 15 rotates in the direction of arrow A to open the switch 14. The switch opening / closing arm 15 has a second operating portion 19 formed at one end thereof. The tip of the second operating portion 19 is protruded above the first operating portion 10 of the cock 6 so as to be rotatable left and right. 20 is installed.

The switch 14 is a normally open type. One terminal is connected to a connection point between the thermocouple element 5 and the temperature sensor, and the other terminal is connected to a connection point between the thermo valve 7 and the temperature sensor.
That is, the temperature sensor and the switch 14 are connected in parallel, and this parallel circuit is connected in series with the thermocouple element 5 and the thermovalve 7 to form a switching path as a whole.

The operation will be described in the above configuration. (1) In the case of cooking or fried food, when the first operation unit 9 is operated, the cock opening / closing rod 10 is pushed and the thermo valve 7 is forcibly opened, and at the same time, the fuel flow path 11 is also opened. When opened, the fuel is sent to the combustion section 4 of the burner 2 and combustion starts. This combustion heats the thermocouple element 5, and the electromotive force is generated by the thermo valve 7.
And the thermo valve 7 is kept open.

At the same time, the operating member 11 is also pushed by the operation of the first operating portion 9, and the tip portion 13 contacts the tongue piece 16 of the switch opening / closing member 15, and the switch opening / closing member 15 is moved in the direction of arrow A in FIG. By rotating the tongue piece 18 away from the actuator, the switch 14 is opened.

The electric circuit in this state will be described with reference to FIG. 3. The parallel circuit of the temperature detecting section 3 and the switch 14 is a series closed circuit of the thermocouple element 5, the temperature detecting section 3 and the thermo valve 7 because the switch 14 is opened. It has become. Accordingly, when the temperature detecting section 3 reaches a predetermined temperature, the temperature detecting section 3 is opened or the resistance is increased, and the thermo valve 7 is turned off or the voltage is lowered, and the thermo valve 7 is closed or the flow path is closed. And the supply of fuel is stopped or restricted.

Then, when the temperature of the pot for cooking boiled or fried food reaches a predetermined temperature, the temperature detection unit 3 opens or increases resistance as described above, and stops or restricts the supply of fuel to cook. Can be done.

(2) Next, in the case of stir-fry or grilling, after operating the first operation unit 9 to start burning in the same manner as in the cooking of (1), the second operation unit 19 is moved to the state shown in FIG. When rotated in the direction indicated by the arrow B, the tongue piece 18 of the operation unit 19 contacts and presses the actuator of the switch 14 to close the switch 14.

The electric circuit in this state will be described with reference to FIG. 3. A closed circuit in which the temperature detector 3 and the closed switch 14 are connected in parallel, and this parallel circuit is connected in series to the thermocouple element 5 and the thermovalve 7 It has become. Therefore, even if the temperature detection unit 3 reaches the predetermined temperature and opens or resistance increases,
Since the temperature detector 3 is short-circuited by the switch 14, the electromotive force of the thermocouple element 5 is directly applied to the thermo valve 7,
Combustion continues without the thermovalve being closed or throttled.

Then, even if the pan of the stir-fry is moved up and down, and is further shaken, the drift of the combustion flame is disturbed, and even if the flame reaches the temperature detection unit 3 and the temperature detection unit 3 exceeds a predetermined temperature, the supply of fuel is stopped or stopped. Is not limited, and cooking can be continued subsequently.

(3) When the cooking of (2) is completed in this way,
The cock 6 is closed by operating the first operation unit 9 and the supply of fuel to the burner 2 is stopped. This first operation unit 9
With the operation described above, the operating member 11 is pushed and its tip portion 13 contacts the tongue of the switch opening / closing member 15, and the switch operating member 15 is rotated in the direction of arrow A in FIG. Switch 14 is opened. As described above, even if the switch 14 is closed by the operation of the second operation unit 19, the opening of the switch 14 by the operation of the first operation unit 9 is performed with priority.

As described above, according to the gas cooker of the embodiment of the present invention, the cooking operation is completed and the first operation unit is operated regardless of whether it is boiled, fried, or stir-fried or grilled. When the combustion is stopped, the switch is always opened, and the temperature detection unit always functions during the next cooking, so that a highly safe gas cooker can be obtained. Grilled food can be cooked, and it becomes a gas cooker with a wide cooking range. Further, the above operation and effect can be obtained only by adding the switch 14 in parallel to the temperature detecting section, so that a highly practical gas cooker can be provided at very low cost.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view of a gas cooker according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is a circuit diagram of the control system. 1 ... gas cooker, 2 ... burner, 3 ... temperature detector,
5 thermocouple element, 6 cock, 7 thermo valve, 9 first operation unit, 14 switch, 19 second
Operation unit.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Masobuchi 1006 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-62-169932 (JP, A) JP-A-60-160 60420 (JP, A) Actually open 60-86755 (JP, U)

Claims (1)

(57) [Claims] 1. A burner, a temperature detector disposed at the center of the burner so as to be able to move up and down to detect the temperature of a heated portion, and a thermocouple element disposed at a side of the burner and detecting a flame. ,
A cock having a built-in thermo valve for controlling fuel supplied to the burner, the cock being opened and closed by operation of a first operation unit;
A switch that opens and closes by operation of the operation unit, the temperature detection unit and the switch are connected in parallel, and this parallel circuit is connected in series to one end of the thermocouple element and one end of the thermo valve, and The other end of the thermocouple element is connected to the other end of the thermovalve to form a closed circuit, the switch is opened in conjunction with the operation of the first operation unit, and the switch of the first operation unit is opened. Opening by the opening operation is the second
A gas cooker that gives priority to opening and closing the switch by opening and closing the operation unit.