JPH07332674A - Cooking apparatus - Google Patents

Abstract

PURPOSE:To ensure a safe usage of a cooking apparatus which is equipped with a temperature-sensitive sensor. CONSTITUTION:A temperature-sensitive sensor 1 is held by suction by an electromagnet 4 being connected with a thermal generating element 3 which senses a burner flame (a), at a non-operating position wherein the temperature-sensitive sensor 1 is not in contact with a pot bottom 5. By doing so, after a high temperature heat-cooking, the temperature-sensitive sensor 1 is always returned to an operating position wherein the temperature-sensitive sensor 1 comes into contact with the pot bottom 5, at the time of next ignition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooker equipped with a temperature sensor to stop the fuel supply to the burner and extinguish the burner when the pot bottom temperature reaches a set temperature.

[0002]

2. Description of the Related Art In a cooker such as a gas table stove, which has a temperature sensor and stops the fuel supply to the burner and extinguishes the burner when the pan bottom temperature reaches a set temperature, the pan bottom temperature is detected by touching the pan bottom. When cooking foods such as stir-fried foods and grilled foods (hereinafter referred to as high-temperature cooking), move the temperature sensor away from the bottom of the pan to a non-operating position that does not touch the bottom of the pan to detect the temperature of the pan. However, after the high temperature cooking is completed, it is desirable for safe use that the temperature sensor is put in contact with the pan bottom to prepare for cooking such as tempura (hereinafter referred to as low temperature cooking) and returned to the operating position for sensing the pan bottom temperature.

Therefore, conventionally, the temperature-sensitive sensor in the inoperative position which does not come into contact with the bottom of the pan during high-temperature cooking is returned to the operating position in contact with the bottom of the pan which is required for low-temperature cooking, in conjunction with the ignition operation or the extinguishing operation of the burner. There is one that eliminates the inconvenience in use due to forgetting to return after cooking at high temperature (see, for example, Japanese Patent Publication No. 5-19050).

The above-mentioned conventional apparatus is composed of a drive device which is composed of a cam body or a rack and pinion coaxial with the operation knob, and a displacement device which is composed of a displacement guide, a displacement lever, a support and a magnet for holding. By using a mechanical actuating means, the temperature sensor located in an inoperative position not in contact with the bottom of the pan is returned to the operating position in contact with the bottom of the pan in conjunction with the ignition operation or the fire extinguishing operation by the operation knob.

More specifically, at the ignition position of the operating knob, the tip end side of the displacement burner can be raised, the temperature sensor can be displaced to the inoperative position, and at the fire extinguishing position, the drive device presses the tip end side of the displacement lever. However, the temperature sensor is in the operating position, and when the temperature sensor is in the inoperative position, it is returned to the operating position through the drive device by the ignition operation of the operating knob.

[0006]

However, since the mechanical actuating means consisting of the displacement device and the driving device is used, the temperature sensor is held in the inoperative position where it does not come into contact with the bottom of the pan and the inoperative position. Since there is no certainty in the return operation from the to the operating position where it touches the bottom of the pan, there was a problem that the safety when unconsciously used could not be ensured and the structure was complicated and cost increased. .

In view of the above problems of the prior art, the present invention is safe even if it is used unconsciously because the temperature sensor is always returned to the operating position at the next ignition after high temperature cooking. The purpose is to provide a cooker that does not damage the cooker.

[0008]

In order to achieve the above object, the cooking device of the present invention is provided with a temperature sensor for contacting the bottom of a pot to detect the temperature of the bottom of the pot and the temperature of the bottom of the pot for which the temperature sensor is preset. When sensed, in a cooker provided with fuel control means for stopping fuel supply to the burner, and position changing means for displacing the temperature sensor into an operating position in contact with the bottom of the pot and an inactive position not in contact with the bottom of the pot, The main feature of the present invention is to provide an electromagnetic holding unit for holding the temperature sensor by an electromagnet connected to a thermoelectric generator that detects burner flame in an inoperative position.

As an invention related to the above specified invention, a thermoelectric generator that senses a burner flame and holds an electromagnetic safety valve open is connected to the electromagnet, and the thermoelectric generator is also used.
It is characterized in that the temperature sensor is displaced to an inoperative position by an external operator against a return force of an internal elastic body and is attracted to and held by the electromagnet.

[0010]

In the cooker of the present invention having the above-mentioned structure, the temperature sensor moves upward to the operating position where it contacts the bottom of the pan during low-temperature cooking and senses the pan bottom temperature. Therefore, the temperature sensor has a preset pan bottom temperature. When the signal is sensed, the signal controls the fuel control means to stop the fuel supply to the burner and extinguish the burner.

Further, during high-temperature cooking, the temperature sensor is moved down to an inoperative position where it does not contact the bottom of the pan and is separated from the bottom of the pan to detect the temperature of the bottom of the pan, so that desired high-temperature cooking can be performed.

In the cooking device having the temperature sensor, the thermoelectric generator is heated by the burner when the temperature sensor is lowered by an external operator against the restoring force of the internal elastic body during high temperature cooking. It is adsorbed by the electromagnet that is excited by the electromotive force and is held in an inoperative position where it does not contact the bottom of the pan.

When the burner is extinguished after the high temperature cooking is completed, the electromotive force due to the heating of the thermoelectric generator disappears, the magnetic force of the electromagnet disappears, and the adsorption and holding of the temperature sensor is released.
The temperature sensor moves upward to the operating position where it comes into contact with the bottom of the pan by the restoring force of the elastic body inside, and prepares for the next low temperature cooking.

The electromagnet is connected to a thermoelectric generator for detecting the burner flame and holding the electromagnetic safety valve open, and the thermoelectric generator is used for both safety and keeping the temperature sensor in an inoperative position. Moreover, since the temperature sensor can be selectively displaced between the operating position and the non-operating position by an external operator, there is no erroneous operation.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cooking device of the present invention will be described below with reference to the drawings.

In the illustrated embodiment, the present invention is applied to a gas table stove, 1 is a temperature sensor,
The temperature sensor 1 is provided with a movable holder 8 which is vertically slidable by applying upward biasing force by a spring (not shown) internally mounted to a column 7 mounted and fixed to a support plate 6. The temperature sensor 1 is provided at the upper end of the pan and is biased by the movable holder 8 against the operating shaft 9 with some compression margin so that the position changing means A described later makes contact with the pan bottom 5 to detect the pan bottom temperature. It is arranged so that it can be displaced away from the position and the bottom 5 of the pan and does not sense the temperature of the bottom of the pan, and is installed at the center of the stove burner 3.

V is fuel control means for stopping the gas supply to the stove burner when the temperature sensor 1 contacts the pan bottom 5 and detects a preset pan bottom temperature. In the embodiment, V is a gas supply passage. A gas control valve provided on the downstream side is connected to the temperature sensor 1 via a controller C.

A is a position changing means for displacing the temperature sensor 1 between an operating position in contact with the pan bottom 5 and an inactive position in which the temperature sensor 1 does not contact the pan bottom 5. For example, the tip end of an operating lever for position change is connected to the operating shaft. By an external operator 11 associated with 9, the upward displacement to the operating position by the spring inside the temperature sensitive sensor 1 and the downward displacement to the inoperative position against the spring are selectably provided. .

Reference numeral 3 is a thermoelectric generator such as a thermocouple for detecting the burner flame a of the stove burner 2. The thermoelectric generator 3 is provided with an electromagnetic safety valve MV provided upstream of the gas supply passage 10 and a controller C. In addition to the above, the thermoelectric generator is connected to an electromagnetic holding means M for holding a temperature sensor to be described later in an inoperative position through a controller C, and the thermoelectric generator is kept off and safe by an electromagnetic safety valve MV. Means M
It is also used for holding the temperature sensor.

Reference numeral M is an electromagnetic holding means for holding the temperature sensor 1 in an inoperative position, which is an adsorption member provided at the lower end of the electromagnet 4 and the operating shaft 9 connected to the thermoelectric generator 3 via the controller C. The temperature-sensitive sensor 1 is constituted by the plate 12, and the adsorption plate 12 is attracted to the electromagnet 4 which is excited by the electromotive force of the thermoelectric generator 3 which is heated by the stove burner 2.
Is held in the inoperative position.

The operation of the above structure will be described below.

When low-temperature cooking is performed, even if high-temperature cooking is performed first, the temperature sensor 1 is returned to the operating position where it touches the pan bottom 5 due to the burner extinguishing, so that it touches the pan bottom 5. When the temperature sensor 1 senses a preset pot bottom temperature, the gas control valve V is closed and the gas supply to the burner 2 is stopped by a command from the controller C which receives the signal. Extinguish burner 2. As a result, overheating during low temperature cooking is prevented.

When high-temperature cooking is performed, the stove burner 2 is ignited and the temperature sensor 1 is actuated by the external operator 11 via the actuating shaft 9 and the movable holder 8 against the restoring force of the internal spring. When it is moved downward, the attraction plate 12 provided on the operating shaft 9 is pressed against the attraction surface of the electromagnet 4,
The adsorption plate 12 is attracted to the electromagnet 4 which is excited by the electromotive force of the thermoelectric generator 3 which is overheated by the burner 2 and the temperature sensor 1
Is held in an inoperative position where it does not touch the bottom of the pan. As a result,
The pan bottom temperature is not sensed and desired high temperature cooking can be performed (see the state of FIG. 1 to the state of FIG. 2).

When the burner 2 is extinguished after the high temperature cooking is completed, the heating of the thermoelectric generator 3 by the burner 2 is released, so that the electromotive force of the thermoelectric generator 3 disappears, the magnetic force of the electromagnet 4 disappears, and the temperature sensor 1 becomes inoperative. The suction hold in the operating position is released. Therefore, the temperature-sensitive sensor 1 is displaced upward together with the movable holder 8 and the operating shaft 9 by the restoring force of the internal spring, and is returned to the operating position where it comes into contact with the pan bottom. At this time, the external operating element 11 is also moved to the operating position. As a result, it prepares for the next low-temperature heating cooking (see the state of FIG. 2 to the state of FIG. 1).

Since the electromagnet 4 is connected to the thermoelectric generator 3 which detects the burner flame a of the stove burner 2 and holds the electromagnetic safety valve MV open, the thermoelectric generator 3 is connected to the electromagnetic safety side MV. And the safety of the temperature sensor 1 by the electromagnet 4 is held at the inoperative position.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it is needless to say that the present invention can be implemented in various modes without departing from the scope of the present invention. is there.

[0027]

The cooking device of the present invention described above has the following effects.

According to the first aspect of the present invention, since the temperature sensor is adsorbed and held by the electromagnet connected to the thermoelectric generator that senses the burner flame in the inoperative position, the temperature sensor is not heated at the next ignition after high temperature cooking. It is always in the actuated position and does not impair safety even if it is used unknowingly.

Further, according to the second aspect of the invention, since the electromagnet is connected to the existing thermoelectric generator which detects the burner flame and holds the electromagnetic safety valve open, there is no need to provide a dedicated thermoelectric generator, which is economical. Is.

Further, according to the third aspect of the invention, since the displacement to the operating position and the displacement to the non-operating position due to the restoring force of the internal elastic body of the temperature sensor can be selected by the external operation element, erroneous operation is prevented. It is easy to use.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram at the time of low temperature heating cooking showing an embodiment of a cooking device of the present invention.

FIG. 2 is a schematic configuration diagram during high temperature heating cooking.

[Explanation of symbols]

 1 Temperature-sensitive sensor 2 Burner V Gas control valve 3 Thermoelectric generator element 4 Electromagnet 5 Pan bottom 11 External operator

Claims (3)

[Claims] 1. A temperature sensor for contacting the bottom of the pot to sense the temperature of the bottom of the pot, a fuel control means for stopping the fuel supply to the burner when the temperature sensor detects a preset temperature of the bottom of the pot, and the above-mentioned sensor. In a cooker having a position changing means for displacing a temperature sensor between an operating position in contact with the bottom of the pan and an inactive position not in contact with the bottom of the pan, the temperature sensor is connected to a thermoelectric generator that detects burner flames in the inactive position. Cooker characterized in that it is provided with an electromagnetic holding means for attracting and holding with an electromagnet. 2. The cooker according to claim 1, wherein a thermoelectric generator that senses a burner flame and holds an electromagnetic safety valve open is also connected to the electromagnet. 3. The cooker according to claim 1, wherein the temperature sensor is displaced to an inoperative position by an external operator against a return force of an internal elastic body and is held by adsorption on the electromagnet.