JP5568163B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker including a heating unit that heats a cooking container and a temperature sensor that abuts the lower surface of the cooking container and detects the temperature of the cooking container.

  2. Description of the Related Art Conventionally, there is known a heating cooker that includes a heating unit that heats a cooking container and a temperature sensor that abuts the lower surface of the cooking container and detects the temperature of the cooking container (see, for example, Patent Document 1).

  In the above conventional example, in order to prevent burning of cooking and ignition of cooking oil, a temperature sensor that detects the temperature of the cooking container in contact with the lower surface of the cooking container is provided in the center of the stove burner, When cooking boiled food or oil, heating control is performed to stop heating or weaken the heating power when the temperature detected by the temperature sensor reaches a predetermined condition. In this case, in order to accurately detect the temperature of the cooking container, a thermal insulation cylinder is arranged around the temperature sensor with a gap therebetween, and the temperature sensor is affected by the radiant heat by blocking the radiant heat from the flame. Is to prevent. In addition, a temperature sensor may not contact | abut directly on the lower surface of a cooking container, but may contact | abut via a heat collecting body.

JP 2000-283468 A

  However, in the above conventional example, it may not be possible to determine whether or not the temperature sensor is in contact with the lower surface of the cooking container, and appropriate control may not be performed.

  The present invention has been invented in view of the above-described conventional problems, and an object of the present invention is to determine whether or not a temperature sensor for detecting the temperature of the cooking container is in contact with the lower surface of the cooking container. It is an object to provide a cooking device.

In order to solve the above-mentioned problems, a cooking device according to claim 1 includes a heating means for heating the cooking container, a heat collector 50 that contacts the lower surface of the cooking container, and the temperature sensing unit 11 heats the heat collector 50. The first temperature sensor 1 that is connected to the cooking vessel and detects the temperature of the cooking container, and the temperature sensing unit 21 is located below the temperature sensing unit 11 of the first temperature sensor 1. A heating cooker comprising a second temperature sensor 2 connected via a thermal resistance member 3 to the temperature sensor 11, wherein the first temperature sensor 1 includes a temperature sensing part 11 and the temperature sensing part 11. A portion of the thermal resistance member 3a having a cylindrical shape into which the lead wire 12 is inserted and having a hole 31 or a slit 32 formed therein. While fixing to the temperature part 11, the temperature sensing part 11 of the 1st temperature sensor 1 of the said cylindrical heat resistance member 3a is fixed. And the second temperature sensor 2 of the temperature sensing portion 21 is fixed to a predetermined length spaced part from the portion to the first temperature sensor 1 and the second temperature sensor 2 and the heat resistance member 3a and a substantially cylindrical The heat collecting body 50 is housed in the holder 5 and the heat collecting body 50 is fixed to the upper end portion of the holder 5 .

  Since the temperature sensing part 21 of the second temperature sensor 2 is provided below the temperature sensing part 11 of the first temperature sensor 1 via the thermal resistance member 3, the detected temperature of the second temperature sensor 2 is The temperature rises later than the temperature detected by the first temperature sensor 1, and it is possible to determine whether or not the first temperature sensor 1 is in contact with the lower surface of the cooking container.

  Further, the first temperature sensor 1 includes a temperature sensing portion 11 and a lead wire 12 connected to the temperature sensing portion 11, and a cylindrical heat resistance member 3 a into which the lead wire 12 is inserted. A part was fixed to the temperature sensing part 11 of the first temperature sensor 1, and a predetermined length apart from the part where the temperature sensing part 11 of the first temperature sensor 1 of the cylindrical heat resistance member 3a was fixed. The distance between the temperature sensing part 11 of the first temperature sensor 1 and the temperature sensing part 21 of the second temperature sensor 2 is fixed by fixing the temperature sensing part 21 of the second temperature sensor 2 to the part. It is easy to keep. In addition, the position of the temperature sensing part 21 of the second temperature sensor 2 fixed to the heat resistance member 3 can be easily set and changed.

  Furthermore, the hole 31 or the slit 32 is formed in the cylindrical heat resistance member 3 a, so that the space between the temperature sensing part 11 of the first temperature sensor 1 and the temperature sensing part 21 of the second temperature sensor 2 is formed. It is possible to increase the thermal resistance (that is, reduce the thermal conductivity).

  In the present invention, it is possible to determine whether or not the first temperature sensor is in contact with the lower surface of the cooking container. For example, when the first temperature sensor is not in contact with the lower surface of the cooking container, the temperature It is possible to perform control such as stopping combustion because it cannot be detected.

It is the whole gas stove perspective view which shows an example of the heating cooker of this invention. It is sectional drawing of a heating part same as the above. It is explanatory drawing of a gas supply path same as the above. It is sectional drawing of one Embodiment of the temperature detection means in this invention. It is sectional drawing of other embodiment. (A) (b) is a perspective view of the example of the heat resistance member in the same as the above. It is sectional drawing of other embodiment. It is a graph of detected temperature-elapsed time of the first temperature sensor.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  In FIG. 1, the gas stove 8 as a heating cooker of this invention is shown. The glass top plate 81 constituting the top surface portion of the gas stove 8 is provided with a plurality of stove burners as heating means. In the illustrated example, a total of three stove burners, a standard burner 82a, a small burner 82b, and a high thermal power burner 82c, are provided as the stove burner.

  The standard burner 82a and the high thermal power burner 82c are provided in the front part of the gas stove 8, and the standard burner 82a is located on the left side toward one side in the left-right direction, and the high thermal power burner 82c is located on the right side, which is the other side. To position. The small burner 82b is located at the rear of the gas stove 8 and at the center in the left-right direction.

  On the top surface of the top plate 81, there are provided five virtues 83 each having a stove burner arranged in the center. Therefore, in this embodiment, each Gotoku 83 becomes a placing part for placing an object to be heated consisting of a cooking container such as a pan with a stove burner, and the heating part 82 in the Gotoku 83 and the stove burner Composed.

  The gas stove 8 is provided with a grill cabinet provided with a grill burner (not shown). The front opening of the grill cabinet is closed openably and closable by a grill door 84 provided on the front surface of the gas stove 8.

  Gas is supplied to the standard burner 82a, the small burner 82b, the high thermal power burner 82c, and the grill burner from a gas supply path 85 shown in FIG. An opening / closing valve 86 is provided in the gas supply path 85. The on-off valve 86 is an electromagnetic valve, and the opening / closing thereof is controlled by a control means (not shown) having a microcomputer provided in the gas stove 8.

  As shown in FIG. 3, the downstream side of the gas supply passage 85 with respect to the opening / closing valve 86 branches to the respective burner burners and grill burner sides, and a flow rate adjusting valve 88 is provided in each branch passage 87. The opening degree of each flow rate adjustment valve 88 is changed by driving a stepping motor 89 provided for each flow rate adjustment valve 88. The driving of each stepping motor 89 is controlled by the control means, whereby the amount of combustion of each stove burner and grill burner, that is, the heating power is adjusted.

  Each of the above-described stove burner and grill burner is provided with a spark plug 90 (see FIG. 2). The igniter that operates each spark plug 90 operates according to a command from the control means.

  As shown in FIG. 1, the front panel 91 constituting the front portion of the gas stove 8 has an operation portion 92a for operating the standard burner 82a, an operation portion 92b for operating the small burner 82b, and a high heating power. An operation unit 92c for operating the burner 82c is provided.

  The operating portions 92a to 92c are provided on the high heating power burner 82c side of the gas stove 8, that is, on the right side. The operation units 92a to 92c are arranged in the left-right direction in the same order as the above-described stove burner. That is, the operation units 92a to 92c are arranged in this order from the left side.

  Each of the operation units 92a to 92c is manually operated to instruct to switch the ignition and extinguishing of the corresponding burner burner and to adjust the thermal power, and in response to this, the control means switches to the point extinguishing of each burner burner. Adjust firepower.

  In addition, the gas stove 8 is provided with an abnormality detection means for detecting that the stove burner is extinguished (disappears) during the ignition of each stove burner or that the cooking container disposed in the stove burner has become hot. When the abnormality is detected by the abnormality detection means, the control means closes the on-off valve 86, stops the gas supply to the stove burner, and puts the stove burner into a fire extinguishing state.

  The above-mentioned fire extinguishing is detected by using an ignition state detecting means 93 provided for each stove burner or a temperature detecting means 94 for detecting the temperature of the cooking container placed on the virtues 83 provided for each stove burner. Is done. Further, the high temperature state of the cooking container is detected using the temperature detecting means 94. That is, in this case, the ignition state detection means 93 and the temperature detection means 94 constitute an abnormality detection means.

  As will be described in detail later, the temperature detecting means 94 is, as shown in FIG. 2, a support member 4 fixedly provided on the gas stove 8, a holder 5 supported by the support member 4 so as to be movable up and down, and a holder 5 and a temperature sensor that is thermally connected to the heat collector 50. The holder 5 is urged upward, and the heat collector 50 at the upper end of the holder 5 normally protrudes upward from the virtues 83. In addition, when the cooking container is placed on the virtues 83 in this state, the heat collector 50 and the holder 5 are pushed down by the bottom part of the cooking container so as to make sure contact.

  Each of the standard burner 82a, the small burner 82b, and the high thermal power burner 82c is provided with a thermocouple 93a (see FIG. 3) as the above-described ignition state detecting means 93, and it can be dealt with based on the detection result of the thermocouple 93a. It is possible to determine whether or not the hot burner is in an ignition state.

  As shown in FIG. 4, the temperature detection means 94 that detects the temperature of the lower surface of the cooking container includes a heat collector 50, a first temperature sensor 1 that detects the temperature of the cooking container via the heat collector 50, The main body is composed of a support member 4 that supports the first temperature sensor 1 so as to be movable up and down, a biasing member that biases the first temperature sensor 1 upward, and a second temperature sensor 2.

  The heat collector 50 is in contact with the lower surface of the cooking container and is brought to a temperature substantially equal to the temperature of the cooking container by heat conduction from the cooking container. In the present embodiment, for example, SUS or the like having a substantially circular plate shape. It is made of metal and the periphery is fixed to the holder 5. The holder 5 is made of a metal such as SUS having a substantially cylindrical shape, and the periphery of the heat collector 50 is fixed to the periphery of the upper end opening, and the upper end opening is closed by the heat collector 50. The upper end portion of the cylindrical member 41 as the support member 4 is inserted into the lower end opening of the holder 5.

  The cylindrical member 41 has a substantially cylindrical shape smaller in diameter than the diameter of the holder 5, the lower end portion is fixed to the stove burner, and the flange 42 is provided on the outer surface of the upper end portion, for example, made of metal such as SUS. Thus, in this embodiment, the folded portion obtained by folding the upper end portion of the cylindrical member 41 outward is used as the flange 42. An annular washer 54 is fitted on the outer surface below the flange 42 of the tubular member 41. The holder 5 is provided with an inner flange 52 on the inner surface of the lower end portion. In this embodiment, a folded portion obtained by folding the vicinity of the lower end portion of the holder 5 inward is used as the inner flange 52, and the lower end portion is folded back inward. Yes.

  The holder 5 has the upper end portion of the cylindrical member 41 inserted into the lower end opening so that the inner flange 52 is positioned below the flange 42 of the cylindrical member 41, and can move up and down within a predetermined movable range. Yes. The upper limit of the movable range of the holder 5 is a state in which the upper surface of the inner flange 52 is in contact with the lower surface of the flange 42 of the cylindrical member 41 via a washer 54, and the lower limit is that of the heat collector 50 at the upper end of the holder 5. In this state, the cylinder member 41 is in contact with the upper end (flange 42). In this embodiment, the upper surface of the inner flange 52 is in contact with the lower surface of the flange 42 of the cylindrical member 41 via the washer 54, but the upper surface of the inner flange 52 directly contacts the lower surface of the flange 42 of the cylindrical member 41. You may touch.

  The holder 5 is provided with a heat insulating cover 53 on the outer surface. The heat insulating cover 53 is made of a metal such as SUS having a substantially cylindrical shape larger than the outer diameter of the holder 5. The heat insulating cover 53 blocks the radiant heat from the flame of the stove burner and uses the radiant heat to collect the heat collector 50. The first temperature sensor 1 that is thermally connected to is prevented from being affected by heat.

  Further, a spring 6 made of a metal such as SUS, for example, is disposed as a biasing member between the heat collector 50 and the flange 42 of the cylindrical member 41, and biases the holder 5 upward.

  The first temperature sensor 1 is thermally connected to the lower surface of the heat collector 50. In this embodiment, the temperature sensor holding member 51 is fixed to the lower surface of the heat collector 50 and the temperature sensor is held. The first temperature sensor 1 is fixed to the member 51. The temperature sensor holding member 51 includes a sensor holding part 51b having a substantially cylindrical shape and a flange-like attachment part 51a continuously provided outside the upper end opening of the sensor holding part 51b. The attachment part 51a is the heat collector 50. The first temperature sensor 1 is accommodated in the sensor holding part 51b.

  As the first temperature sensor 1, a thermistor is preferably used, but another sensor may be used. In the first temperature sensor 1, a lead wire 12 is connected to a temperature sensing portion 11 (temperature sensing element), the temperature sensing portion 11 is accommodated and held in a sensor holding portion 51b, and the lead wire 12 is a sensor. Derived from the holding portion 51b, the gap in the sensor holding portion 51b is filled with the filler 71. For example, the lead wire 12 has a core wire coated with a synthetic resin such as FEP (tetrafluoroethylene-hexafluoropropylene copolymer). As the filler 71, an inorganic adhesive having heat resistance is preferably used, but is not particularly limited. Further, the lead wire 12 is inserted and protected in a φ5 insulation protection tube (not shown) made of polyimide, for example, and the insulation protection tube 72 is placed in another insulation protection tube 72 made of, for example, a silicon varnish glass weave. Inserted and protected. The insulation protection tube 72 is inserted into the holder 5 and the cylindrical member 41, and the internal lead wire 12 is extended to the outside and finally connected to the control means. In the present embodiment, the temperature sensing unit 11 of the first temperature sensor 1 is in contact with the lower surface of the cooking container via the heat collector 50, but the temperature sensing unit 11 is in direct contact with the lower surface of the cooking container. May be.

  And in this invention, as shown in FIG. 4, the 2nd temperature sensor 2 provided with the temperature sensing part 21 connected with the temperature sensing part 11 of the 1st temperature sensor 1 via the thermal resistance member 3 is provided. Thus, in the present embodiment, the temperature sensing part 21 of the second temperature sensor 2 is fixed to the lower part separated from the temperature sensing part 11 of the lead wire 12 of the first temperature sensor 1 by a predetermined length (10 mm). The lead wire 12 is also used as the heat resistance member 3. Below, it demonstrates based on FIG.

  Like the first temperature sensor 1, the second temperature sensor 2 is preferably a thermistor in which a lead wire 22 in which a core wire is coated with a synthetic resin is connected to the temperature sensing portion 21. It is not limited to. In this embodiment, the temperature sensing part 21 or the coating of the second temperature sensor 2 is caulked to the coating of the first temperature sensor 1 or is bonded with an inorganic adhesive having the same heat resistance as the filler 71. Thus, the temperature sensing part 21 of the second temperature sensor 2 is fixed to the lead wire 12 of the first temperature sensor 1. The lead wire 22 of the second temperature sensor 2 is also inserted and protected in the same insulation protection tube 72 as that of the first temperature sensor 1, but the temperature sensing part 21 of the second temperature sensor 2 is fixed. The insulating protective tube 72 is cut off from the portion where the contact is made.

  In the present embodiment, the pair of lead wires 12 of the first temperature sensor 1 and the pair of lead wires 22 of the second temperature sensor 2 are made common by connecting one lead wires 12 and 22 to each other. Yes. That is, one lead wire 12 of the first temperature sensor 1 and one lead of the second temperature sensor 2 are connected to three main body side lead wires whose one end is connected to the control means and the other end extends to the support member 4. The connection portion where the wire 22, the other lead wire 12 of the first temperature sensor 1 and the other lead wire 22 of the second temperature sensor 2 are connected, and the core wire of the lead wires 12, 22 is exposed, The vertical height position is different for each main body side lead wire.

  Although not shown, if the temperature sensing portion 21 of the second temperature sensor 2 is fixed below the lower end of the spring 6 of the lead wire 12 of the first temperature sensor 1, the sensitivity of the second temperature sensor 2 will be described. It is possible to prevent the warm portion 21 and the lead wire 22 from being rubbed, pinched, and caught by the spring 6, and a stable slidability of the holder 5 can be obtained.

  FIG. 8 is a graph showing the change over time of the detected temperature of the first temperature sensor 1. The vertical axis is the detected temperature (° C.), the horizontal axis is the elapsed time (seconds), and the four lines <1> to <4> are each in contact with the lower surface of the cooking container <1>. <2> When the heat collector 50 is 1 mm away from the lower surface of the cooking container, <3> When the heat collector 50 is 5 mm away from the lower surface of the cooking container, <4> The heat collector 50 is The time change is shown when 10 mm away from the lower surface of the cooking container. From FIG. 8, it can be seen that the detection temperature rises more slowly as the heat collector 50 moves away from the temperature sensing unit 11 of the first temperature sensor 1. Note that the waveform of the temperature detected by the first temperature sensor 1 in <1> is undulating because the heating is controlled by the control means.

  If the heat collector 50 is in contact with the lower surface of the cooking container, the temperature detected by the first temperature sensor 1 is the line <1> in FIG. 8, and the temperature detected by the second temperature sensor 2 is <4>. Is almost the same.

  When the heat collecting body 50 is 1 mm away from the lower surface of the cooking container, the temperature detected by the first temperature sensor 1 becomes a line <2> in FIG. 8, and the temperature detected by the second temperature sensor 2 is <4>. The temperature difference ΔT of the two temperature sensors (= the detected temperature of the first temperature sensor 1−the detected temperature of the second temperature sensor 2) is cooked by the heat collector 50. It becomes smaller than the case where it contacts the lower surface of the container. For this reason, if the detected temperature difference ΔT is less than the upper limit α (deg) for a predetermined time or more, it is determined that the first temperature sensor 1 is not in contact with the lower surface of the cooking container, and combustion is stopped, for example. Control becomes possible.

  In addition, when performing boiling water or the like, when a cooking container such as a kettle in which water is stored is placed on the heating unit 82 and heated, the first temperature sensor is in contact with the lower surface of the cooking container. The temperature detected by the first temperature sensor 1 is approximately 100 ° C. or less because it is saturated at a temperature around 100 ° C., which is the boiling point of water, whereas the temperature detected by the second temperature sensor 2 is determined from the flame of the stove burner. It rises even if it exceeds 100 ° C under the influence of radiant heat. On the other hand, when the first temperature sensor is not in contact with the lower surface of the cooking container, the detected temperature of the first temperature sensor 1 and the detected temperature of the second temperature sensor 2 rise above 100 ° C. Therefore, when boiling water in a kettle, a water heater mode switch operated by the user is provided in the gas stove, and when the water heater mode switch is operated and ΔT> β (β is positive when a predetermined time has elapsed after the start of heating. (Or a negative constant), it is possible to determine that the first temperature sensor is not in contact with the lower surface of the cooking vessel, and to perform control such as stopping combustion, for example.

  Moreover, since the lead wire 12 is also used as the heat resistance member 3, it is not necessary to provide a separate heat resistance member 3, the number of parts can be reduced, and the manufacturing can be performed at low cost. Further, since the coating made of the synthetic resin of the lead wire 12 has a lower thermal conductivity than that of the metal, the heat transmitted by the thermal conduction is small and the delay of the temperature rise of the second temperature sensor 2 with respect to the first temperature sensor 1 is increased. The detection temperature difference is also increased, and the detection accuracy of the detection temperature difference is improved. In addition, the position of the temperature sensing part 21 of the second temperature sensor 2 fixed to the lead wire 12 can be easily set and changed.

  Next, another embodiment will be described with reference to FIG. Since most of the present embodiment is the same as that of the above embodiment shown in FIG. 4, the same components are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described. In the above embodiment, the temperature sensing portion 21 of the second temperature sensor 2 is fixed to the lead wire 12 and the lead wire 12 is also used as the heat resistance member 3. However, in this embodiment, the lead wire 12 is separate from the lead wire 12. The thermal resistance member 3 is provided.

  The thermal resistance member 3 is made of a synthetic resin or metal having a cylindrical shape (substantially cylindrical shape), and the lead wire 12 is inserted into the thermal resistance member 3. And while fixing a part of this thermal resistance member 3 to the temperature sensing part 11 of the 1st temperature sensor 1, it is in the part separated predetermined length from the part which fixed the temperature sensing part 11 of the 1st temperature sensor 1. The temperature sensing unit 21 of the second temperature sensor 2 is fixed. Specifically, the upper end portion of the thermal resistance member 3 is fitted and fixed to the sensor holding unit 51b of the temperature sensor holding member 51, and the thermal resistance. Adhering the temperature sensitive part 21 of the second temperature sensor 2 to the inner surface below the lower end of the spring 6 at the lower end of the member 3 with an inorganic adhesive having the same heat resistance as the filler 71, A gap inside the lower end of the heat resistance member 3 is filled with a filler 71. In the present embodiment, since the lower end portion of the heat resistance member 3 is positioned below the lower end of the spring 6, the lead wire 22 of the second temperature sensor 2 is rubbed, pinched, or caught by the spring 6. It is possible to prevent this, and the stable slidability of the holder 5 is obtained.

  Also in this embodiment, since the temperature rise of the second temperature sensor 2 with respect to the first temperature sensor 1 is delayed, it is possible to determine whether or not the first temperature sensor 1 is in contact with the lower surface of the cooking container. When the first temperature sensor 1 is not in contact with the lower surface of the cooking container, it is possible that the temperature cannot be detected, so that the combustion is stopped.

  Further, the thermal resistance member 3 makes it easy to keep the distance between the temperature sensing part 11 of the first temperature sensor 1 and the temperature sensing part 21 of the second temperature sensor 2 constant. In addition, the position of the temperature sensing part 21 of the second temperature sensor 2 fixed to the heat resistance member 3 can be easily set and changed.

  6A, holes 31 are formed in the heat resistance member 3, and slits 32 are formed in the heat resistance member 3 as shown in FIG. The thermal resistance between the temperature sensing part 11 of the first temperature sensor 1 and the temperature sensing part 21 of the second temperature sensor 2 is increased (that is, the thermal conductivity is reduced) compared to the case where there is no 31 or slit 32. In particular, it is effective when the heat resistance member 3 is made of metal and tends to have a low thermal resistance and a high thermal conductivity.

  Next, still another embodiment will be described with reference to FIG. Since most of the present embodiment is the same as that of the above embodiment shown in FIG. 5, the same components are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  In the present embodiment, the temperature sensing part 21 of the second temperature sensor 2 is disposed between the inner surface of the holder 5 and the outer surface of the cylindrical heat resistance member 3a (hereinafter referred to as an inter-cylinder gap), Further, the lead wire 22 of the second temperature sensor 2 is inserted through the inter-cylinder gap, and into the spring 6 from above the spring 6 through the hole 31 or slit 32 formed above the spring receiving portion 33 of the heat resistance member 3. It is to be inserted.

  The heat resistance member 3 is made of a synthetic resin or metal having a tubular shape (substantially cylindrical shape), whereas the tubular heat resistance member 3a of the upper embodiment shown in FIG. 5 is inserted into the spring 6. In this embodiment, the spring 6 is inserted into the heat resistance member 3, and the diameter is slightly smaller than the diameter of the holder 5. The upper end portion of the heat resistance member 3 is fixed to the heat collector 50, the lower end portion is fixed to the upper surface of the inner flange 52 of the holder 5, and the side surface portion of the holder 5 is doubled by the side wall of the holder 5 and the heat resistance member 3. It has a structure. An annular spring receiving portion 33 is formed in an intermediate portion of the inner surface of the heat resistance member 3 so as to protrude inward. And the spring 6 is arrange | positioned between the spring receiving part 33 and the flange 42 of the cylinder member 41, and the holder 5 is urged | biased upwards.

  The temperature sensing part 21 of the second temperature sensor 2 disposed in the inter-cylinder gap is fixed to contact with at least the outer surface of the heat resistance member 3, and further contacts the inner surface of the holder 5 in this embodiment. The holder 5 also functions as the heat resistance member 3.

  Also in this embodiment, since the temperature rise of the second temperature sensor 2 with respect to the first temperature sensor 1 is delayed, it is possible to determine whether or not the first temperature sensor 1 is in contact with the lower surface of the cooking container. When the first temperature sensor 1 is not in contact with the lower surface of the cooking container, it is possible that the temperature cannot be detected, so that the combustion is stopped.

  In addition, it is possible to prevent the temperature sensing portion 21 and the lead wire 22 of the second temperature sensor 2 from being rubbed or caught on the spring 6, and a stable slidability of the holder 5 can be obtained.

DESCRIPTION OF SYMBOLS 1 1st temperature sensor 11 Temperature sensing part 12 Lead wire 2 2nd temperature sensor 21 Temperature sensing part 22 Lead wire 3 Thermal resistance member 3a Cylindrical thermal resistance member 31 Hole 32 Slit 33 Spring receiving part 4 Support member 41 Tube member 42 Flange 5 Holder 50 Heat collector 51 Temperature sensor holding member 51a Mounting portion 51b Sensor holding portion 52 Inner flange 53 Thermal insulation cover 54 Washer 6 Spring 71 Filler 72 Insulation protection tube 94 Temperature detection means

Claims (1)

A heating means for heating the cooking container; a heat collector that abuts the lower surface of the cooking container; a first temperature sensor in which a temperature sensing unit is thermally connected to the heat collecting body to detect the temperature of the cooking container; A heating cooker comprising: a second temperature sensor having a temperature part connected to a lower side of the temperature sensing part of the first temperature sensor via a heat resistance member and the temperature sensing part of the first temperature sensor The first temperature sensor includes a temperature sensing portion and a lead wire connected to the temperature sensing portion, and has a cylindrical shape into which the lead wire is inserted and has a hole or slit formed therein. A part of the resistance member is fixed to the temperature sensing part of the first temperature sensor, and a part of the cylindrical thermal resistance member separated from the part where the temperature sensing part of the first temperature sensor is fixed by a predetermined length. the temperature sensing portion of the second temperature sensor is fixed, substantially circular and the first temperature sensor and said second temperature sensor and the heat resistance member Cooker, characterized in that accommodated in the holder in which the Jo, fixing said heat collecting member to an upper end of the holder.

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