JPH07127858A - Cooking heater - Google Patents

Abstract

PURPOSE:To maintain to continue burning as long as a temperature sensor is not disconnected even when low temperature food is introduced to a pot. CONSTITUTION:A cooking heater has disconnection detecting means for detecting a disconnection of a temperature sensor 4, and comprises control means for forcibly igniting immediately by operating the detecting means based on an ignition command of a burner 1 and operating the detecting means of the sensor 4 after a predetermined time is elapsed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for cooking gas stoves or electric stoves.

[0002]

2. Description of the Related Art Conventionally, some cooking stove controllers are provided with disconnection detecting means for detecting disconnection of a temperature sensor, as disclosed in Japanese Patent Laid-Open No. 188935/1982. In these conventional disconnection detection methods, a temperature sensor that detects the temperature of the pan bottom is checked for disconnection based on the burner's ignition command.If the disconnection does not occur, the ignition operation starts, and if the disconnection does not occur, the ignition operation does not start. I was doing.
The presence or absence of disconnection was checked by, for example, capturing the actual temperature of the bottom of the pan with a temperature sensor, and if this temperature was less than around 0 ° C., it was determined that there was disconnection.

[0003]

However, in the heating device for cooking having the disconnection detecting means of the conventional temperature sensor of this kind, when the low temperature cooked food such as frozen food is put in the pan, the bottom of the pan is Since the temperature of the bottom of the pan is cooled to 0 ° C or less, the disconnection detection means erroneously determines that the temperature sensor is disconnected, and therefore does not shift to the ignition operation, even if there is food in the pan. It had a problem that it could not be cooked and heated.

Therefore, the present invention has a disconnection detecting means for detecting the presence or absence of disconnection of the temperature sensor. Even when low temperature food is put in the pan, normal combustion is continued unless the temperature sensor is disconnected. The fire extinguishing operation is performed when the temperature sensor is disconnected, and the convenience of cooking and heating is improved while maintaining safety.

[0005]

In order to solve the above-mentioned problems, the cooking device of the present invention provides a heating means for heating a pan, a temperature sensor for detecting the temperature of the bottom of the pan, and a heating amount for the heating means. In a device having a heating amount control device for controlling and a disconnection detecting means for detecting disconnection of the temperature sensor,
The present invention is characterized in that control means is provided for forcibly performing the ignition operation immediately without operating the burnout detection means based on the ignition command of the burner, and for operating the burnout detection means of the temperature sensor after a lapse of a certain time.

[0006]

The present invention relates to a cooking heating device provided with a disconnection detecting means for detecting disconnection of a temperature sensor for detecting the temperature of the bottom of a pot, and the heating device for cooking is provided without operating the disconnection detecting means based on an ignition command of the burner. -A control means is provided for forcibly igniting the burner immediately after the ignition command of the engine and operating the disconnection detection means of the temperature sensor after a certain period of time.If the temperature sensor is not disconnected, combustion is continued, When the temperature sensor is broken, the burner is extinguished.

As a result, it is possible to check whether or not the temperature sensor is broken, and while maintaining the safety, the cooking and heating are continuously maintained even when the low temperature food is put in the pan and cooked, as long as the temperature sensor is not broken. be able to.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic view of an embodiment of a gas stove with a temperature sensor, which is a heating device for cooking. The burner 1 is connected to a gas pipe 15 at a base end 18 so that gas and primary air are supplied from the base end 18, and a large number of flame holes 8 are formed on the outer peripheral surface of the annular portion 7 at the tip. It is provided. Further, the gas pipe 15 is provided with a heating amount control device such as an electromagnetic opening / closing valve 9 and a proportional valve 2 so that ignition, extinction or heat power of the burner 1 can be adjusted.

On the other hand, a temperature detector 10 is arranged at the center of the annular portion 7 of the burner 1. This temperature detector 10
As shown in FIG. 2, a thermal head 12 is vertically slidably attached to the upper end of a guide shaft 11, the thermal head 12 is biased upward by a spring 13, and the temperature sensor 4 is attached to the lower surface of the thermal head 12. The sensor lead wire 14 of the temperature sensor 4 is connected to the control section 6 through the inside of the guide shaft 11. Since the thermal head 12 of the temperature detector 10 is designed to descend against the spring 13 when pressed, when the pan 3 is placed on the Gotoku 16, the thermal head 12 is slightly descended to the bottom of the pan. The temperature can be detected.

Incidentally, the structure is such that the flame emitted from the flame port 8 of the burner 1 hits the thermal head 12 and does not heat the thermal head 12.

A micro computer is mounted on the control section 6, and a disconnection detecting means 19 for detecting a disconnection of a temperature sensor and a compulsory ignition operation based on an ignition command of a burner. A control means 20 for operating the disconnection detection means of the temperature sensor after a lapse of a certain time is provided. Two
1 is a low temperature food.

FIG. 3 is a flowchart for explaining the operation of the present invention, and the operation of the present invention will be described below with reference to FIG.

First, the cook puts low-temperature foods 21 such as frozen foods in the pan 3 and then gives an ignition command to the burner to start an ignition operation with an operation switch or the like (not shown).

When the ignition command signal is given to the microcomputer of the controller 6, the control means 20 in the microcomputer starts the ignition operation (S1). The ignition operation is an operation of operating a heating amount control device for controlling a heating amount to the heating means to supply fuel and the like to the burner 1 which is the heating means and ignite the burner to heat the pot. At the same time as the end signal of this ignition operation, the timer is operated to continue the combustion for a certain time (S2). This fixed time may be a time that is necessary and sufficient to thaw frozen food for general household use, and may be set to about 1 minute, and depending on the burning capacity of the burner 1, some time may be required. It is possible to have a margin. Also, the timer may start at the same time as the start of the ignition operation or the ignition command to the burner 1, not at the same time as the end signal of the ignition operation.

After the combustion is finished for such a fixed time, the control means 20 operates the disconnection detection means 19 of the temperature sensor 4 (S3). That is, the temperature sensor 4 starts detecting the temperature of the bottom of the pot only after the burner burns. After the burning for a certain period of time, the low-temperature food in the pan 3 is sufficiently thawed, so that it is possible to detect the temperature above the disconnection region of the temperature sensor 4. The disconnection detection itself may be performed by a conventional method.

If the temperature sensor 4 is not broken as a result of the wire breaking detection by the wire breaking detecting means 19, the combustion state is continued (S4), and when the temperature sensor 4 is broken, the electromagnetic on-off valve 9 is closed. Then, the burner 1 is extinguished, and a lamp or the like is blinked to display an abnormal alarm (S
5).

In the present embodiment, an example of a gas stove with a temperature sensor is shown as a heating device for cooking, but the present invention is not limited to this embodiment and can be used in an electric stove with a temperature sensor. Instead of a gas burner, an electromagnetic on-off valve, etc., an electric heater or an on-off switch can be used.

[0019]

As described above, according to the present invention, the heating means for heating the pot, the temperature sensor for detecting the temperature of the bottom of the pot, the heating amount control device for controlling the heating amount to the heating means, and the temperature sensor. In a device having a disconnection detecting means for detecting disconnection, the disconnection detecting means of the temperature sensor is forcibly ignited immediately without operating the disconnection detecting means based on the ignition command of the burner, and the disconnection detecting means of the temperature sensor is operated after a certain period of time. Since the control means to operate is provided, even if the low temperature food is put in the pan and cooking is started, as long as the temperature sensor is not broken,
Not only could the cooking heating be maintained, but when the temperature sensor was disconnected, heating of the pan was stopped to maintain safety.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of FIG.

FIG. 3 is a flowchart showing the operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 burner 9 heating amount control device 4 temperature sensor 3 pan 19 disconnection detection means 20 control means 21 low temperature food

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroshi Kimura 32 Akashi-cho, Chuo-ku, Kobe-shi, Hyogo No-Ritsu Co., Ltd. (72) Inventor Kazuyuki Mori 32 Akashi-cho, Chuo-ku, Kobe, Hyogo No. -In Ritsu (72) Inventor Haruaki Mitsuda 32 Akashi-cho, Chuo-ku, Kobe-shi, Hyogo No-Ritsu Co., Ltd. (72) Inventor Masahiko Horiuchi 32 Akashi-cho, Chuo-ku, Kobe-shi, Hyogo No-Ritsu, Ltd.

Claims (1)

[Claims] 1. A heating means for heating the pan, a temperature sensor for detecting the temperature of the bottom of the pan, a heating amount control device for controlling the heating amount to the heating means, and a disconnection detecting means for detecting disconnection of the temperature sensor. A control means for causing the burnout detection means of the temperature sensor to operate after a certain period of time, forcibly forcibly performing the ignition operation immediately without operating the burnout detection means based on the ignition command of the burner. A heating device for cooking.