JP5686749B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker, and more particularly to a heating cooker that can control burner heating power according to the distance between an object to be heated placed on a support member and the burner.

  A cooking device equipped with a burner is well known by the name of a gas stove or the like. In an ordinary gas stove, a burner having an annular flame opening is arranged in each of one to a plurality of openings formed on a top plate, and an object to be heated such as a pan or a frying pan is placed on the burner so as to surround the burner. A support member (for example) is provided for support.

  By the way, in recent years, in a gas stove that cooks a heated object with a burner, various sensors for automatically controlling the burner heating power are provided below the heated object. As an example, a temperature detection sensor that detects the temperature of the bottom of the object to be heated, a pan diameter detection sensor that detects the outer diameter of the object to be heated, and the like can be given.

  FIG. 8 shows a conventional gas stove with a temperature detection sensor. FIG. 8 (a) is a diagram showing a state where an object to be heated is not placed on the support member, and FIG. 8 (b) is a diagram on the support member. It is a figure which shows the state by which the to-be-heated material was placed in. The gas stove A includes an annular burner B and a thermal head C disposed in the center of the burner B so as to be movable in the vertical direction. The thermal head C has a temperature detection sensor such as a thermistor at its upper end. S is provided (see FIG. 8A). The thermal head C is urged vertically upward by an urging means F such as a spring. When the heated object H is placed on the support member D, the thermal head C is moved to the heated object H. It moves vertically downward against the urging force by the weight of the object H to be heated while abutting against the bottom portion E (see FIG. 8B).

  According to the temperature detection sensor described above, the temperature of the bottom of the object to be heated can always be detected by bringing the temperature detection sensor into contact with the bottom of the object to be heated by the biasing means. Thereby, for example, when the temperature of the bottom of the object to be heated exceeds a predetermined value, the burner heating power is weakened or the burner is automatically extinguished to prevent the object to be heated from being heated excessively. Can do.

  However, in a conventional gas stove with a temperature detection sensor, the thermal head is positioned above the support member by the urging force of the urging means when the object to be heated is not placed on the support member, and the urging means If the urging force is too strong, when the object to be heated is placed on the support member, the object to be heated is pressed vertically upward by the urging force of the urging means, and the object to be heated may fall from the support member. There is sex. For example, when cooking using a light and small pan that is convenient for the user, the urging force of the urging means makes it easier for the article to be heated to fall, so it is necessary to weaken the urging force of the urging means. is there. In addition, when a supporting member having a low vertical height is used, the urging force of the urging means against the bottom of the object to be heated is further increased, and the pressing force by the urging means vertically upward is increased. The possibility that the heated object falls from the support member is further increased.

  For such a problem, Patent Literature 1 discloses a gas stove with a temperature detection sensor for the purpose of reducing the pressing force of the thermal head against the bottom of the object to be heated.

  In the gas stove with a temperature detection sensor disclosed in Patent Document 1, when the user places the object to be heated on the support member, the thermal head and the lifting base are both moved vertically downward by the weight of the object to be heated, When the user operates the regulation switch, the vertical movement of the lifting base is regulated, and the movable range of the thermal head above the support member is suppressed.

  On the other hand, a conventional pan diameter detection sensor for detecting the outer diameter of an object to be heated is disclosed in Patent Document 2. The pan diameter detecting device disclosed in Patent Document 2 has a plurality of sensors arranged in the combustion exhaust passage along the bottom surface of the object to be heated, arranged in a radial direction at intervals to detect the presence of combustion exhaust. It is.

JP 2007-292409 A Japanese Patent Laid-Open No. 9-264538

  In the gas stove with a temperature detection sensor disclosed in Patent Document 1, the position of the lift base is temporarily defined during cooking, and the height at which the upper end of the movable range of the thermal head protrudes above the support member is suppressed. By doing so, the pressing force of the thermal head against the bottom of the object to be heated can be reduced, and for example, the friction between the bottom of the object to be heated and the temperature detection sensor of the thermal head when the object to be heated is lifted can be reduced.

  On the other hand, when the object to be heated is not placed on the support member, the thermal head is positioned above the support member by the urging force of the urging means. For example, when cooking using a light and small pan When the distance between the object to be heated and the temperature detection sensor approaches according to the shape of the support member, the pressing force against the bottom of the object to be heated by the urging means of the thermal head cannot be sufficiently reduced, It is difficult to completely eliminate the possibility that the object to be heated falls from the support member.

  Moreover, in the pan diameter detection apparatus currently disclosed by patent document 2, the outer diameter of the pan mounted on the supporting member is detected using a some sensor, and it responds to the detected outer diameter of the to-be-heated object. Although it is possible to control the maximum heating power of the burner, it is necessary to arrange a plurality of sensors in the radial direction, and there is a problem that the number of parts increases, the structure becomes complicated, and the manufacturing cost increases.

  The present invention has been made in view of such circumstances, and has an arbitrary outer diameter on a support member disposed on a top plate while detecting the distance between an object to be heated and a burner with a simple configuration. To provide a heating cooker that can efficiently heat the bottom of the object to be heated without causing the object to be heated to fall from the support member by the detecting means even when the object to be heated having a weight is placed. Objective.

  In order to achieve the above object, a cooking device of the present invention includes a burner for heating an object to be heated, and a support member disposed around the burner for supporting the object to be heated above the burner. A cooking device comprising a distance detecting means for detecting a vertical distance between the bottom of the object to be heated supported by the supporting member and the burner, wherein the distance detecting means is supported by the supporting member. A movable part movable in the vertical direction below the object to be heated, a moving means for moving the movable part in the vertical direction, and a movement amount detecting means for detecting a movement amount of the movable part in the vertical direction by the moving means And the movable part is disposed in a state of being biased upward at the upper end of the bar member and connected to the moving means, and relative to the bar member. It is freely movable in the vertical direction. A contact portion that is movable vertically downward relative to the rod member according to the load when an external load greater than the biasing force is applied in a direction opposite to the biasing force; Movement detecting means for detecting relative movement of the abutment portion relative to the bar member, and the heating cooker according to the amount of vertical movement of the movable portion detected by the movement amount detecting means. A gas flow rate changing mechanism for changing the gas flow rate of the combustion gas supplied to the burner is provided.

  According to the embodiment described above, the distance detection unit includes the movable unit that is movable in the vertical direction below the object to be heated supported by the support member, and the moving unit that moves the movable unit in the vertical direction. A movable part is connected to the moving means and is movable in the vertical direction, and is arranged in a state of being biased upward by the upper end of the bar member, and is relatively perpendicular to the bar member. When an external load that is in contact with the bottom of the object to be heated and is larger than the urging force acts in a direction opposite to the urging force, it is relative to the rod member according to the load. Are provided with a contact portion that is movable vertically downward, and a movement detection means that detects the relative movement of the contact portion with respect to the rod member. The pressure applied to the object to be heated by the urging means of the distance detecting means changes. Even if the pressing force of the object to be heated by the urging means of the distance detecting means is changed by changing the relative distance between the bottom of the object to be heated and the burner by changing the height and shape of the support member, By moving the movable portion in the vertical direction by the moving means, the contact portion of the distance detecting means that contacts the bottom of the object to be heated can be moved relatively by a substantially constant distance with respect to the rod member. The pressing force of the distance detecting means with respect to the bottom of the object can be maintained substantially constant, and the object to be heated from the support member can be reliably prevented from overturning. In addition, since the abutting portion of the distance detecting means is moved relative to the rod member by a substantially constant distance, the movement detecting means detects the relative movement of the abutting portion with respect to the rod member. The detection means can be remarkably reduced in size and simplified. Further, the movement detection means detects only the movement of the abutting portion of the distance detection means relative to the rod member, and also the object to be heated based on the vertical movement amount of the movable portion by the movement means detected by the movement amount detection means. The distance between the bottom of the burner and the burner can be calculated, and the gas flow rate of the combustion gas supplied to the burner can be changed based on the calculation result. However, the bottom of the object to be heated can be efficiently heated. Therefore, for example, even when using a light and small pan, or when using a low-height support member in which the distance between the object to be heated and the burner is close, the effect of overturning the object to be heated from the support member is effective. Thus, it is possible to efficiently heat the bottom of the object to be heated while suppressing it.

  In addition, the movement detecting means only needs to be able to detect the relative movement of the contact portion with respect to the rod member, that is, the movement of the contact portion with respect to the rod member by a predetermined distance. The relative movement amount of the contact portion with respect to the member may be detected, and the gas flow rate of the combustion gas supplied to the burner may be adjusted using the movement amount.

  Here, in one embodiment, the upper end portion of the contact portion is arranged vertically below the support surface of the support member in a state where an object to be heated is not supported by the support member. It is characterized by that.

  According to the embodiment described above, the pressing force of the movable part of the distance detecting means against the bottom of the object to be heated when the object to be heated is placed on the support member can be surely eliminated. The heating part can be reliably prevented from falling.

  In one embodiment, the object to be heated is supported by the support member, the movable part moves vertically upward by the moving means, and the abutting part of the movable part contacts the bottom of the object to be heated. When the abutting portion moves by a predetermined distance relative to the rod member against the urging force, the movement of the movable portion by the moving means stops vertically.

  According to the embodiment described above, the contact portion with respect to the rod member is surely eliminated while pressing the movable portion of the distance detecting means against the bottom portion of the heated object when the heated object is placed on the support member. The movable part of the distance detecting means can be moved vertically upward so as to move by a predetermined distance, regardless of the shape and weight of the object to be heated supported by the support member, or the height of the support member. The distance between the bottom of the object to be heated and the burner can be detected while pressing the bottom of the object to be heated with a substantially constant pressing force. Thereby, the pressing force of the contact part with respect to the bottom part of a to-be-heated material can be suppressed, and the fall of the to-be-heated part from a support member can be prevented reliably.

  In one embodiment, the bar member extends in the vertical direction, the vertical extension portion in which the contact portion is disposed at the upper end thereof, and the lower portion of the vertical extension portion. And a horizontal extending portion extending in the horizontal direction from the end portion, wherein the movement detecting means is provided in the horizontal extending portion.

  That is, the bar member of the movable part of the distance detection means, a vertical extension part extending in the vertical direction, a horizontal extension part extending in the horizontal direction from the lower end of the vertical extension part, The movement detecting means is provided in a horizontally extending portion that is separated from the contact portion that contacts the bottom portion of the object to be heated.

  According to the embodiment described above, the vertical length of the bar member that moves in the vertical direction by the moving means can be suppressed, and an increase in the vertical height of the cooking device can be suppressed, and during cooking It is possible to dispose the movement detecting means away from the contact portion that can become high temperature by heating the burner, and to suppress the heating of the movement detecting means and simplify the configuration.

  In addition, although the said distance detection means may be equipped with the temperature sensor which detects the temperature of a to-be-heated object, and may provide the temperature sensor which detects the temperature of a to-be-heated object separately, in one embodiment, It is preferable that the contact part of the movable part of the distance detection means includes a temperature detection means for detecting the temperature of the bottom of the object to be heated.

  According to the embodiment described above, the number of parts of the heating cooker can be reduced and the structure thereof can be simplified, so that an increase in manufacturing cost can be effectively suppressed.

  In one embodiment, the support member and the abutting portion of the movable portion of the distance detecting means are arranged concentrically with the burner, and the support member is located outside the object to be heated. A support surface that is inclined toward the center of the support member or lowered stepwise is provided so that the vertical distance between the bottom of the object to be heated and the burner becomes closer as the diameter decreases. It is characterized by that.

  According to the embodiment described above, the support surface of the support member for supporting the object to be heated is lowered toward the center of the support member, so that, for example, the outer diameter of the object to be heated supported by the support surface is small. Then, the vertical distance between the bottom of the object to be heated and the burner becomes shorter.

  Here, as described in the prior art, before the object to be heated is placed on the support member, the upper end of the distance detection means is located above the support member, and the distance detection means moves in the vertical direction. If the object to be heated is placed on the support member, the distance between the bottom of the heated part and the burner becomes shorter according to the shape of the support surface of the support member. The pressing force against increases. That is, as the object to be heated having a small diameter is placed on the support member, the pressing force of the distance detecting unit against the bottom of the object to be heated increases, and the possibility that the object to be heated falls from the support member increases. .

  On the other hand, according to the heating cooker of the present invention, the movable part of the distance detecting means can be moved in the vertical direction. For example, when the object to be heated is not supported by the support member, the contact part of the movable part When the object to be heated is placed on the support member, the movable portion of the distance detecting means is moved in the vertical direction to contact the movable portion. Because the distance between the bottom of the object to be heated and the burner can be detected by moving the contact part to the bottom of the object to be heated and moving the contact part by a predetermined distance with respect to the rod member of the movable part. Even if the outer shape of the part changes and the vertical position of the bottom of the object to be heated changes, the pressing force of the distance detecting means with respect to the bottom of the object to be heated can be maintained substantially constant.

  In other words, since the support surface of the support member for supporting the object to be heated is lowered toward the center of the support member, the object to be heated having a different outer diameter is supported when supported by the support surface of the support member. Even when the vertical distance between the bottom of the heated object and the burner changes, the distance detecting means maintains the pressing force applied to the bottom of the heated object at a substantially constant level and the burner bottom and the burner. , And the burner heating power can be controlled by changing the gas flow rate of the combustion gas supplied to the burner based on the detected distance.

  In one embodiment, the movable part includes a plurality of movement detection units, and each of the plurality of movement detection units detects a different movement of the contact part with respect to the rod member. The heating cooker selects movement detection means for detecting movement of the contact portion relative to the bar member from the plurality of movement detection means based on an outer diameter of an object to be heated supported by the support member. It is characterized by.

  According to the embodiment described above, the movable part includes a plurality of movement detection units that can detect different movements of the contact part with respect to the rod member, and is based on the outer diameter of the object to be heated supported by the support member. Since the movement detecting means for detecting the movement of the abutting portion relative to the rod member can be selected from the plurality of movement detecting means, the rod of the abutting portion can be selected according to the outer diameter of the object to be heated supported by the supporting member. The amount of movement relative to the member can be adjusted. As a result, the pressing force of the abutting portion against the heated object can be precisely adjusted according to the outer diameter of the heated object supported by the support member, and the fall of the heated object from the support member can be more effectively performed. Can be suppressed.

  In one embodiment, the contact portion includes an inner tube and an outer tube, and an upper end portion of the outer tube includes a contact surface that contacts the bottom of the object to be heated. The upper end portion is disposed inside the inner cylinder and is movable in the vertical direction relative to the inner cylinder.

  According to the embodiment described above, since the rod member can be slid in the vertical direction inside the inner cylinder of the contact portion, the contact portion of the movable portion is brought into contact with the bottom portion of the object to be heated. When the rod member is moved by a predetermined distance relative to the inner surface, the horizontal movement of the rod member can be restricted by the inner cylinder of the abutting portion, and the distance between the bottom of the object to be heated and the burner is precisely defined. Can be detected.

  In one embodiment, the bar member comprises a cylinder having a horizontal cross section complementary to the inner cylinder of the abutting portion, and detects relative movement of the abutting portion with respect to the rod member. In order to do so, the connection line connected to the abutting portion passes through the inner cylinder of the abutting portion and the inside of the cylinder of the bar member, and the connection line detects the movement within the cylinder of the bar member. By moving relative to the means, the movement detecting means detects a relative movement of the contact portion with respect to the bar member.

  According to the embodiment described above, in order to detect the relative movement of the contact portion with respect to the rod member, the connection line connected to the contact portion is passed through the inside of the inner cylinder of the contact portion and the cylinder of the rod member. By providing, it is possible to effectively utilize the internal space of the contact portion and the bar member, and it is possible to protect the connection line from a flame or the like by the burner.

  In one embodiment, the gas flow rate changing mechanism is provided in a gas supply pipe connected to the burner, and adjusts the gas flow rate of the combustion gas flowing through the gas supply pipe, and the movement It is characterized by comprising an amount detection means and a control unit for controlling the gas flow rate adjustment means in accordance with the amount of movement of the bar member detected by the movement amount detection means.

  According to the embodiment described above, a signal related to the movement amount of the bar member detected by the movement amount detection means is transmitted to the control unit, and the control unit, for example, stores the movement amount of the bar member stored in the control unit or the like in advance. Control the gas flow rate of the combustion gas supplied to the burner by controlling the gas flow rate control means provided in the gas supply pipe connected to the burner from the information about the distance between the heated object and the burner and the outside diameter of the object to be heated. can do.

  In one embodiment, the control unit prevents the gas flow rate of the combustion gas flowing through the gas supply pipe from becoming larger than a predetermined amount based on the movement amount of the bar member detected by the movement amount detection means. The gas flow rate adjusting means is controlled.

  According to the embodiment described above, the distance between the object to be heated and the burner and the outer diameter of the object to be heated are detected from the amount of movement of the bar member detected by the movement amount detecting means, and the gas of the combustion gas supplied to the burner Since the flow rate can be limited to the gas flow rate according to the detection result, it is possible to reliably prevent the burner flame from being ejected to the side of the heated object and to efficiently heat the bottom of the heated object. . In addition, since the combustion gas having a gas flow rate that maximizes the heating efficiency of the object to be heated can be supplied to the burner without being conscious of the user or the like, the heating efficiency of the burner can be increased efficiently. it can.

  Furthermore, in one embodiment, the heating cooker includes a cap that covers the burner, and the abutting portion of the movable portion of the distance detecting unit is supported by the support member on the object to be heated. When the burner is covered with the cap in a state where the burner is not burned and the burner is not burned, the burner can be brought into contact with the cap.

  According to the embodiment described above, the object to be heated is not supported by the support member, and the burner is covered with the cap in a state where the burner is not burnt, and the movable part of the distance detection means is moved in the vertical direction. When the contact portion comes into contact with the cap, for example, it is possible to clean the heating cooker while waterproofing the burner with the cap by determining that the cleaning mode is for the heating cooker including the top plate and the like. In addition, the cap may be attached to the heating cooker in advance and the burner may be covered with the cap based on a command signal from the user or the cap may be provided separately. It is also possible to cover the burner.

  As can be understood from the above description, according to the heating cooker of the present invention, even if an object to be heated having an arbitrary outer diameter or weight is placed on the support member, the heated portion does not fall from the support member. The distance between the bottom of the object to be heated and the burner can be precisely detected with a simple structure, and the burner flame is controlled to prevent the burner flame from being ejected to the side of the object to be heated. A cooking device capable of efficiently heating an object is obtained.

The whole perspective view which shows the basic composition of Embodiment 1 of the heating cooker by this invention. It is a figure which shows the movable part of the distance detection means used with the heating cooker of Embodiment 1 shown in FIG. 1, Comprising: (a) is the perspective view, (b) is the longitudinal cross-sectional view, (c) is a figure. The CC arrow line view of 2 (b). It is a longitudinal cross-sectional view of the heating cooker of Embodiment 1 shown in FIG. 1, (a) is a figure which shows the state in which the to-be-heated material is not put on a support member, (b) is a cover on a support member. The figure which shows the state which moved the movable part until the contact part contact | abutted the bottom part of to-be-heated material, after putting a heating thing, (c) moves a movable part following FIG. The figure which shows the state which moved the member only the predetermined distance with respect to the contact part. The ignition flow figure of the heating cooker of Embodiment 1 shown in FIG. The longitudinal cross-sectional view which shows the state which wash | cleans the heating cooker of Embodiment 1 shown in FIG. It is a longitudinal cross-sectional view of Embodiment 2 of the heating cooker by this invention, Comprising: (a) is a figure which shows the state which put the to-be-heated object with a relatively large outer diameter on a supporting member, (b) is support. The figure which shows the state which put the to-be-heated object with a relatively small outer diameter on the member. It is a longitudinal cross-sectional view of Embodiment 3 of the heating cooker by this invention, Comprising: (a) is a figure which shows the state which put the to-be-heated object with a relatively large outer diameter on a supporting member, (b) is support. The figure which shows the state which put the to-be-heated object with a relatively small outer diameter on the member. It is a longitudinal cross-sectional view which shows the conventional gas stove with a temperature detection sensor schematically, (a) is a figure which shows the state in which the to-be-heated object is not put on a support member, (b) is a to-be-heated object on a support member. The figure which shows the state by which was put.

  Hereinafter, a description will be given based on an embodiment of the present invention with reference to the drawings.

[Embodiment 1]
FIG. 1 shows the basic configuration of Embodiment 1 of a heating cooker according to the present invention. Although FIG. 1 shows a gas table type cooking device (a stove), the cooking device of the first embodiment can also be applied to a built-in type cooking device (a stove). Further, the cardinality and form of the illustrated burner and support member (for example) can be appropriately changed according to the use environment such as home use, business use, use place, etc., use use, and the like. For example, when applied to a rectangular egg-cooker, a support member having a shape suitable for the shape of the pan, such as an elliptical shape, can be used.

  The illustrated cooking device 100 includes a burner 10 having an annular flame opening 4 in each of two openings 12 formed in the top plate 11, and is adjacent to each burner 10. Ignition means 20 for igniting is provided. Further, the heating cooker 100 includes a support member 30 for supporting an object to be heated (for example, a pan or a frying pan) above the burner 10 concentrically with the burner 10 so as to surround each burner 10. The support member 30 includes six support claws 32 each having a support surface 31 for supporting an object to be heated above the burner 10, and support for holding the support claws 32 on the top plate 11. It consists of legs 33. In addition, the heating cooker 100 is urged upward on the inner side of the support member 30 in order to detect the vertical distance between the bottom of the heated object supported by the support member 30 and the burner 10. The distance detection means 40 which has the contact part 41 which is arrange | positioned and can move to a perpendicular direction is provided.

  The heating cooker 100 includes two dial switches 13 on the front surface 16 having both ignition means and fire power adjustment means for igniting and extinguishing the respective burners 10 and adjusting the heat power. Based on the above operation, the burner 10 can be ignited and extinguished, and the heating power can be adjusted. The cooking device 100 includes a cleaning switch 14 on the front surface 16, and a washing faucet connected to the cooking device 100 when a user or the like presses the cleaning switch 14 as necessary. (Not shown) is opened so that the cooking device 100 can be washed while waterproofing the burner 10.

  Moreover, the heating cooker 100 is provided with a control unit 50 for controlling the gas flow rate of the combustion gas G supplied to the burner 10 therein, and the control unit 50 includes each burner 10, the ignition means 20, and the dial switch 13. And a control line (not shown), so that the gas flow rate of the combustion gas G supplied to each burner 10 can be controlled based on a signal of a movement amount detection means and a dial switch 13 described later. .

  FIG. 2 is a view showing the movable portion 45 of the distance detecting means 40 used in the heating cooker 100 of the first embodiment shown in FIG. 1, wherein FIG. 2 (a) is a perspective view thereof, and FIG. 2 (b). Is a longitudinal sectional view thereof, and FIG. 2C is a view taken along the line CC of FIG. 2B.

  As shown in FIG. 2 (a), the movable part 45 of the distance detecting means 40 is a bar connected to a moving means 49 (see FIG. 3 (a)) for moving the movable part 45 of the distance detecting means 40 in the vertical direction. A member 42 and an abutting portion 41 that is arranged so as to be movable in the vertical direction relative to the rod member 42 in a state of being biased upward at the upper end portion of the rod member 42. Yes. The abutting portion 41 is in contact with the bottom of the object to be heated, and when an external load larger than the urging force acts in a direction opposite to the urging force, the abutting portion 41 is relative to the rod member 42 according to the load. Therefore, it can move vertically downward. Here, as the urging means 39 (see FIG. 2B), an appropriate urging means such as a coil spring, air, or magnet can be applied.

  Further, the bar member 42 extends in the horizontal direction from the vertical extending portion 43 extending in the vertical direction in which the contact portion 41 is disposed at the upper end portion thereof, and the lower end portion of the vertical extending portion 43. And a horizontal extending portion 44 that is separated from the abutting portion 41 by a movement detecting means 46 for detecting the movement of the abutting portion 41 with respect to the bar member 42 as described above. Is provided. The control line 47 of the movement detection unit 46 is connected to the control unit 50, and the movement unit 49 (FIG. 3 (FIG. 3 (FIG. 3A)) is connected to the control unit 50. The drive of a) is controlled. The movement detection means 46 is composed of a magnetic sensor, and a magnet 48a (see FIG. 2B) of a connection line 48 connected to a contact portion 41 described later passes through the side of the movement detection means 46. Thus, the movement of the contact portion 41 relative to the rod member 42 can be detected.

  Referring to FIG. 2B, the movable portion 45 will be described in more detail. The abutting portion 41 has an inner cylinder 41a and an outer cylinder 41b, and the upper end of the outer cylinder 41b is in contact with the bottom of the object to be heated. The contact surface 41c which contacts is provided. Further, the upper end portion 42a of the bar member 42 is disposed inside the inner cylinder 41a of the contact portion 41, and is movable in the vertical direction relative to the inner cylinder 41a. Further, the upper end portion 42 a of the bar member 42 is formed of a cylinder whose horizontal cross section has a shape complementary to the inner cylinder 41 a of the contact portion 41. Here, an urging means 39 is interposed between the upper end 42 a of the bar member 42 and the abutting surface 41 c of the abutting part 41, and the abutting part 41 is moved by the urging means 39 to the bar member. When the external load larger than the urging force acts in the direction opposite to the urging force, the rod member 42 is applied to the bar member 42 according to the load. It can move relatively vertically downward.

  Further, a connection line 48 connected to the back surface of the contact surface 41c of the contact portion 41 in order to detect relative movement of the contact portion 41 with respect to the rod member 42 is connected to the inner cylinder 41a and the rod of the contact portion 41. It passes through the inside of the cylinder of the member 42. A magnet 48 a is provided near the contact portion 41 by a predetermined distance with respect to the movement detection means 46 in the connection line 48. With this configuration, the contact portion 41 moves with respect to the rod member 42, and the connection line 48 moves relative to the movement detection means 46 by a predetermined distance within the cylinder of the rod member 42. At this time, the magnet 48a of the connecting wire 48 passes through the side of the movement detecting means 46, and the relative movement of the contact portion 41 with respect to the bar member 42 is detected.

  As shown in FIG. 2 (c), the inner cylinder 41a of the abutting portion 41 and the upper end portion 42a of the bar member 42 have a substantially cylindrical shape in a horizontal cross section, but the upper end portion of the bar member 42. 42a is provided with three convex portions 42d substantially uniformly in the circumferential direction, and the inner cylinder 41a of the contact portion 41 is provided with a concave portion 41d having a shape complementary to the convex portion 42d. By providing such a convex portion 42d and a concave portion 41d, the relative rotation of the contact portion 41 with respect to the rod member 42 can be effectively prevented. In addition, the urging means of the contact portion 41 described above can be disposed in the recess 41 d provided in the inner cylinder 41 a of the contact portion 41.

  Next, with reference to FIG. 3, the usage method of the heating cooker 100 of Embodiment 1 is demonstrated.

  3 is a longitudinal cross-sectional view of the heating cooker according to the first embodiment shown in FIG. 1, and FIG. 3 (a) is a diagram showing a state where an object to be heated is not placed on the support member, FIG. FIG. 3B is a diagram illustrating a state in which the movable part is moved after the object to be heated is placed on the support member until the contact part contacts the bottom of the object to be heated; FIG. It is a figure which shows the state which moved the movable part following and moved the contact part vertically below only a predetermined distance with respect to the rod member. FIG. 3 shows a burner, a support member, and the like on one side of the heating cooker 100 according to Embodiment 1 shown in FIG.

  First, with reference to Fig.3 (a), the specific structure of the burner 10 and the distance detection means 40 which are used with the heating cooker 100 of Embodiment 1 is demonstrated.

  The burner 10 includes an inner cylinder 1 and an outer cylinder 2, an internal space between the inner cylinder 1 and the outer cylinder 2 is a gas flow path 3, and an upper end side of the burner 10 is a flame port 4. Here, the upper end side of the gas flow path 3 of the burner 10 is closed by the closing plate 5, and a vertically long flame opening slit is appropriately arranged at equal intervals in the circumferential direction at the upper end portion of the outer cylinder 2 of the burner 10. The flame opening 4 is configured with a quantity of. As described above, since the flame opening 4 is provided in the circumferential direction of the outer cylinder 2, the burner flame in which the combustion gas G is burned is ejected in a direction perpendicular to the axis of the burner 10. Further, the lower end side of the outer cylinder 2 of the burner 10 is bent in a horizontal direction at a predetermined position, whereby the gas flow path 3 of the burner 10 is also bent in the horizontal direction, and the end of the gas flow path 3 of the burner 10 is The combustion gas G is connected to the gas supply pipe L1 by appropriate connection means. Air A is taken into the gas flow path 3 of the burner 10, and the combustion gas G and air A are mixed in the gas flow path 3.

  The distance detection means 40 includes a movable portion 45 that can move in the vertical direction below the object to be heated supported by the support member, a moving means 49 that moves the movable portion 45 in the vertical direction, and a movable portion that can be moved by the moving means 49. Movement amount detecting means 51 for detecting the amount of movement of the unit 45 in the vertical direction. The movement amount detection unit 51 is connected to the control unit 50 via a control line, and the movement amount in the vertical direction of the movable unit 45 detected by the movement amount detection unit 51 is transmitted to the control unit 50, and the control unit 50. Controls the gas flow rate of the combustion gas G flowing through the gas supply pipe L1 based on the amount of movement. Here, as the moving means 49, for example, a stepping motor can be applied. The moving means 49 may be manually operated when the user or the like heats the object to be heated.

  As described above, the movable portion 45 includes the rod member 42 connected to the moving means 49, the contact portion 41 that contacts the bottom of the object to be heated supported by the support member 30, and the contact portion 41. Movement detecting means 46 for detecting relative movement with respect to the rod member 42, and the contact portion 41 is attached to the upper end portion 42a of the rod member 42 through the biasing means 39 in a vertically upward direction. It is arranged in a state of being urged. Moreover, the contact part 41 may be provided with a temperature sensor (not shown) that detects the temperature of the object to be heated, and information about the temperature may be transmitted to the control unit 50.

  Further, a connection line 48 is connected to the back surface of the contact surface 41 c of the contact part 41, and a magnet 48 a is provided on the connection line 48. When the contact portion 41 moves relative to the rod member 42, the magnet 48a of the connecting wire 48 moves relative to the movement detecting means 46 attached to the rod member 42, so that the rod The relative movement of the contact portion 41 with respect to the member 42 is detected. Then, by transmitting the detection signal to the control unit 50, the control unit 50 can control the gas flow rate adjusting means (open / close valve) V11 provided in the gas supply pipe L1 based on the detection signal. It is like that. Thus, the gas flow rate of the combustion gas G supplied to the burner 10 from the gas flow rate adjusting means (open / close valve) V11, the moving amount detecting means 51, and the control unit 50 according to the moving amount of the movable portion 45 in the vertical direction. A gas flow rate changing mechanism for changing the above is configured. The controller 50 is also connected to a shutoff valve V12 that shuts off the inflow of the combustion gas G to the gas supply pipe L1.

  Here, as shown in FIG. 3A, in the state where the object to be heated is not placed on the support member 30, the upper end portion (contact surface 41 c) of the contact portion 41 supports the support member 30. It is positioned at an upper limit position that is vertically lower than the surface 31 and is separated by a predetermined distance vertically above the burner 10.

  Next, as shown in FIG. 3B, when the article H to be heated is placed on the support member 30, the control unit 50 transmits a drive signal to the moving means 49, and the moving means 49 is based on the drive signal. The movable portion 45 is moved until the contact surface 41 c of the contact portion 41 contacts the bottom of the object to be heated H. As a result, the movable portion 45 of the distance detection means 40 (the bar member 42 of the movable portion 45) moves vertically upward relative to the burner 10 and the top plate 11 by the distance X1.

  The contact surface 41c of the contact portion 41 is determined to be in contact with the bottom of the article H to be heated. A contact sensor is provided in the contact portion 41 and the contact signal is transmitted to the control portion 50. The control unit 50 may stop driving the moving means 49, or a load sensor that detects a load variation of the contact unit 41 is disposed in the vicinity of the contact unit 41, and the signal is transmitted to the control unit 50. The controller 50 may stop driving the moving unit 49.

  However, in the state where the contact surface 41c of the contact portion 41 as shown in FIG. 3B is in contact with the bottom of the heated object H, no pressing force acts on the bottom of the heated object H. For example, When the user or the like moves the object to be heated H slightly, the contact part 41 of the movable part 45 of the distance detection means 40 does not contact the bottom of the object to be heated H. In such a case, for example, if the moving means 49 is driven again and the contact surface 41 c of the contact portion 41 is not brought into contact with the bottom portion of the heated object H, the bottom of the heated object H and the burner 10 There is a possibility that the distance cannot be detected accurately. For example, when the contact part 41 is provided with a temperature sensor, the contact surface 41c of the contact part 41 is separated from the bottom part of the heated object H, and the temperature of the bottom part of the heated object H is detected. I can't do that.

  Therefore, in the heating cooker 100 of the first embodiment, as shown in FIG. 3C, after the contact surface 41 c of the contact portion 41 contacts the bottom of the heated object H, the moving means 49 is moved. The rod member 42 of the movable portion 45 is moved by continuing to drive, and the rod member 42 is moved vertically upward with respect to the contact portion 41 by a distance X2. That is, the urging means 39 disposed between the back surface of the contact surface 41 c of the contact portion 41 and the upper end portion 42 a of the rod member 42 is compressed by a distance X2, and the contact portion 41 is compressed with respect to the rod member 41. Move vertically downward by distance X2.

  Here, as described above, the contact portion 41 moves relative to the rod member 42, and the connection line 48 connected to the back surface of the contact surface 41 c of the contact portion 41 is relative to the rod member 42. When the magnet 48a provided on the connection line 48 moves relative to the rod member 42 by the distance X2, the magnet 48a passes the side of the movement detecting means 46. Then, when the signal is transmitted from the movement detection means 46 to the control unit 50, the control unit 50 stops driving the movement means 49 based on the signal, and the movement member 49 causes the rod member 42 of the movable portion 45 to move. The movement stops.

  Thus, after the contact surface 41c of the contact part 41 contacts the bottom of the object to be heated H, the moving means 49 is continuously driven to move the rod member 42 of the movable part 45, and the contact part 41 By compressing the urging means 39 disposed between the back surface of the contact surface 41c and the upper end portion 42a of the bar member 42 by a distance X2, a pressing force can be applied to the bottom of the heated object H, For example, even when the user or the like moves the object to be heated H slightly, the contact part 41 of the movable part 45 of the distance detection means 40 can always be brought into contact with the bottom of the object to be heated H. Even if the height and shape of the support member 30 change and the relative distance between the bottom of the article H to be heated and the burner 10 changes, the contact portion 41 of the distance detection means 40 is kept at a certain distance from the rod member 42. Since it can be relatively moved by X2 and stopped, the pressing force of the contact portion 41 against the bottom of the heated object H can be maintained substantially constant.

  Moreover, since the movement detection means 46 should just detect the movement of the distance X2 with respect to the rod member 42 of the contact part 41, for example, compared with the case where distance X1 + X2 is detected, the movement detection means 46 can be reduced in size. .

  Further, the control unit 50 calculates the distance between the bottom of the article to be heated H and the burner 10 based on the moving distance X1 of the movable unit 45 by the moving unit 49 detected by the moving amount detecting unit shift 51, and the gas flow rate. A signal for adjusting the opening degree of the on-off valve V11 constituting the adjusting means is transmitted, the gas flow rate of the combustion gas G flowing through the gas supply pipe L1 is adjusted, and the gas flow rate of the combustion gas G supplied to the burner 10 is adjusted. Therefore, the bottom portion of the object to be heated H can be efficiently heated while greatly simplifying the configuration of the heating cooker 100.

  FIG. 4 is an ignition flow diagram of heating cooker 100 of the first embodiment shown in FIG.

  First, the user or the like places the article to be heated H on the support surface 31 of the support member 30 (S11). Here, the contact part 41 of the movable part 45 of the distance detection means 40 is located below the bottom part of the article to be heated H in the vertical direction.

  Next, when the user or the like presses the dial switch 13 provided in the heating cooker 100 to heat the article H to be heated, the ON signal is transmitted to the control unit 50 (S12).

  When the control unit 50 receives the ON signal, the control unit 50 transmits a drive signal to the moving unit 49, and moves the movable unit 45 of the distance detection unit 40 until the contact surface 41 c of the contact unit 41 contacts the bottom of the heated object H. Move vertically upward (movement distance X1) (S13).

  Further, the controller 50 continues to drive the moving means 49 even after the contact surface 41c of the contact portion 41 contacts the bottom of the article H to be heated (S14), and the control unit 50 continues to drive the contact surface 41c of the contact portion 41. The bar member 42 of the movable part 45 is moved with respect to the contact part 41 until the urging means 39 disposed between the back surface and the upper end part 42a of the bar member 42 is compressed by the distance X2 (S15). At that time, the magnet 48 a provided on the connection line 48 moves relative to the rod member 42 by the distance X 2, and the magnet 48 a passes the side of the movement detection means 46.

  When the control unit 50 receives the signal from the movement detection unit 46, the control unit 50 stops driving the movement unit 49 and stops the movement of the bar member 42 of the movable unit 45 by the movement unit 49 (S16). Moreover, the control part 50 calculates the distance of the bottom part of the to-be-heated material H, and the burner 10 based on the movement distance X1, and the opening degree of the on-off valve V11 provided in gas supply piping L1 based on the calculated distance Is transmitted to the on-off valve V11 to adjust the opening degree of the on-off valve V11. At the same time, the control unit 50 transmits a signal for opening the shutoff valve V <b> 12, causes the combustion gas G to flow into the gas supply pipe L <b> 1 connected to the burner 10, and supplies the combustion gas G to the burner 10.

  And the control part 50 transmits an ignition signal to the ignition means 20 provided adjacent to the burner 10, ignites the combustion gas G ejected from the flame opening 4 of the burner 10, and burns the combustion gas G ( S17). At that time, since the combustion gas G is supplied to the burner 10 according to the distance between the bottom of the heated object H calculated based on the movement distance X1 and the burner 10, for example, from the side of the heated object H The to-be-heated material H can be heated efficiently, suppressing the ejection of a burner flame.

  When the user or the like rotates the dial switch 13 clockwise or counterclockwise while the object to be heated H is heated, the signal is transmitted to the control unit 50, and the control unit 50 supplies the gas based on the signal. The opening degree of the on-off valve V11 provided in the pipe L1 is adjusted. Thereby, a user etc. can adjust the gas flow supplied to burner 10, and can adjust the thermal power of burner 10 as desired. At that time, the controller 50 does not make the opening degree of the on-off valve V11 provided in the gas supply pipe L1 larger than a predetermined size based on the movement distance X1 of the movable part 45 detected by the movement amount detection means 51. As described above, the opening degree of the on-off valve V11 is limited, so that, for example, even if the user or the like greatly rotates the dial switch 13 in the direction of increasing the heating power, the combustion gas having a predetermined gas flow rate or more is supplied to the gas supply pipe L1. G does not flow. As a result, it is possible to reliably prevent the burner flame from being ejected to the side of the heated object H even while the heated object H is being heated, and the burner having high heating efficiency without being conscious of the user or the like. Firepower can be realized.

  When the heating or heat insulation of the heated object H is completed, the user or the like presses the dial switch 13 again to turn it off, so that the OFF signal is transmitted to the control unit 50, and control is performed based on the signal. The part 50 transmits a valve closing signal to the shutoff valve V12, the gas flow path to the gas supply pipe L1 is shut off, and the burner 10 is extinguished.

  Further, when the user or the like presses the dial switch 13 and removes the heated object H from the support member 30 without turning it off, the contact portion 41 is brought into contact with the rod member 42 by the biasing force of the biasing means 39. On the other hand, the magnet 48a provided on the connection line 48 connected to the contact surface 41c of the contact part 41 moves vertically from the side of the movement detection means 46, and therefore a signal related to the movement is transmitted to the control unit. 50, and based on the signal, the control unit 50 is provided in the gas supply pipe L1, closes the cutoff valve V12, shuts off the gas flow in the gas supply pipe L1, and automatically extinguishes the burner 10. Can do.

  FIG. 5 shows a state where the heating cooker 100 of the first embodiment shown in FIG. 1 is washed.

  As shown in the figure, the heating cooker 100 includes a cap 52 that covers the burner 10 in a state where the object to be heated is not supported by the support member 30 and the burner 10 is not burned.

  For example, when the user or the like covers the burner 10 with the cap 52 and then presses the cleaning switch 14 provided on the front surface 16 of the heating cooker 100, the signal is transmitted to the control unit 50, and the control unit 50 moves the moving means 49. To move the movable portion 45 of the distance detecting means 40 vertically upward. And when the contact surface 41c of the contact part 41 of the movable part 45 contact | abuts to the inner surface 52a of the cap 52, the signal will be transmitted to the control part 50, and the control part 50 will be for washing | cleaning connected to the heating cooker 100 The heating cooker 100 is washed while opening the water faucet (not shown) and waterproofing the burner 10. Here, the height of the inner surface 52a of the cap 52 is preferably set below the support surface 31 of the support member 30 so that it can be easily distinguished from the bottom of the object to be heated placed on the support member 30. .

  For example, when the user or the like covers the burner 10 with the cap 52 and then presses the cleaning switch 14 provided on the front surface 16 of the heating cooker 100, the heating cooker 100 can be cleaned as it is. As described above, after confirming the presence of the cap 52 by the distance detection means 40, the cooking device 100 is washed, so that an erroneous operation of the washing switch 14 by a user or the like can be prevented.

[Embodiment 2]
FIG. 6 is a longitudinal cross-sectional view of a second embodiment of the heating cooker according to the present invention, and FIG. FIG. 6B is a diagram showing a state in which an object to be heated having a relatively small outer diameter is placed on the support member. The heating cooker 200 according to the second embodiment is mainly different from the heating cooker 100 according to the first embodiment shown in FIG. 1 in the form of the support surface 31 of the support member 30. The configuration is substantially the same. Therefore, the same code | symbol is attached | subjected to the structure similar to the heating cooker 100 of Embodiment 1, and the detailed description is abbreviate | omitted.

  As shown in FIG. 6A, the support member 130 applied in the heating cooker 200 of the second embodiment has a lower support surface 131 that is inclined toward the center of the support member 130. The inclination angle of the support surface 131 of the support member 130 can be changed as appropriate. Further, the support surface 131 of the support member 130 may be lowered stepwise toward the center of the support member 130.

  Here, as shown in FIG. 6A, when the heated object HR having a relatively large outer diameter is placed on the support member 130, the control unit 50 drives the moving means 49. The movable portion 45 of the distance detecting means 40 is moved vertically upward by a distance X1R, and the contact surface 41c of the contact portion 41 is brought into contact with the bottom portion of the heated object HR. The distance X1R is detected by the movement amount detection means 51. Further, the controller 50 continues to drive the moving means 49 even after the contact surface 41c of the contact portion 41 contacts the bottom of the heated object HR, and the back surface of the contact surface 41c of the contact portion 41 and the stick The bar member 42 of the movable portion 45 is moved with respect to the abutting portion 41 until the biasing means 39 disposed between the upper end portions 42a of the member 42 is compressed by the distance X2.

  When the movement detecting means 46 detects that the abutting part 41 has moved by the distance X2 with respect to the bar member 42, the control unit 50 stops driving the moving means 49 and the bar member of the movable part 45 by the moving means 49. The movement of 42 is stopped. Moreover, the control part 50 calculates the distance of the bottom part of the to-be-heated material HR, and the burner 10 based on the moving distance X1R, and the opening degree of the on-off valve V11 provided in the gas supply piping L1 based on the calculated distance Is transmitted to the on-off valve V11 to adjust the opening degree of the on-off valve V11. At the same time, the control unit 50 transmits a signal for opening the shutoff valve V <b> 12, causes the combustion gas G to flow into the gas supply pipe L <b> 1 connected to the burner 10, and supplies the combustion gas G to the burner 10. Further, the control unit 50 transmits an ignition signal to the ignition means 20 provided adjacent to the burner 10, ignites the combustion gas G ejected from the flame port 4 of the burner 10, and burns the combustion gas G. The object to be heated HR is heated.

  Further, as shown in FIG. 6B, when the heated object HS having a relatively small outer diameter is placed on the support member 130, the control unit 50 drives the moving unit 49 to perform the distance. The movable portion 45 of the detection means 40 is moved vertically upward by a distance X1S, and the contact surface 41c of the contact portion 41 is brought into contact with the bottom portion of the object to be heated HS. Here, the vertical height of the bottom portion of the heated object HS shown in FIG. 6B is lower than the vertical height of the bottom portion of the heated object HR shown in FIG. Is relatively smaller than the distance X1R described above.

  Further, the controller 50 continues to drive the moving means 49 even after the contact surface 41c of the contact portion 41 contacts the bottom of the heated object HS, and the back surface of the contact surface 41c of the contact portion 41 and the stick The bar member 42 of the movable portion 45 is moved with respect to the abutting portion 41 until the biasing means 39 disposed between the upper end portions 42a of the member 42 is compressed by the distance X2.

  That is, even when the heated object HR having a relatively large outer diameter is placed on the support member 130 (see FIG. 6A), the heated object HS having a relatively small outer diameter. Even when the is placed on the support member 130 (see FIG. 6B), since the urging means 39 is compressed by the same distance X2, the contact portion with the bottom of the heated objects HR and HS The pressing force 41 can be kept constant, and the to-be-heated objects HR and HS from the support member 130 can be prevented from falling.

  When the control unit 50 detects that the contact part 41 has moved by the distance X2 with respect to the bar member 42 by the movement detection unit 46, the control unit 50 stops driving the movement unit 49, and the movement unit 49 moves the movable unit 45. The movement of the bar member 42 is stopped. Moreover, the control part 50 calculates the distance of the bottom part of the to-be-heated object HS and the burner 10 based on the moving distance X1S, and the opening degree of the on-off valve V11 provided in the gas supply piping L1 based on the calculated distance Is transmitted to the on-off valve V11 to adjust the opening degree of the on-off valve V11. Here, since the moving distance X1S is relatively smaller than the moving distance X1R, the heating cooker 200 adjusts the opening degree of the on-off valve V11 according to the outer diameter of the object to be heated, and the combustion supplied to the burner 10 The gas flow rate of the gas G can be adjusted.

  By adopting such a configuration, the outer diameter of the object to be heated can be precisely detected together with the distance between the object to be heated and the burner, and the object to be heated is prevented from falling down from the support member. A burner flame can be formed according to the distance between the burner and the outer diameter of the object to be heated, and the object to be heated is efficiently heated by reliably preventing the burner flame from being ejected to the side of the object to be heated. be able to.

[Embodiment 3]
FIG. 7 is a longitudinal sectional view of Embodiment 3 of the heating cooker according to the present invention, and FIG. FIG. 7B is a diagram showing a state in which an object to be heated having a relatively small outer diameter is placed on the support member. The heating cooker 300 of the third embodiment is mainly different from the heating cooker 200 of the second embodiment shown in FIG. 6 in the form of the movement detection means 46, and the other configurations are substantially the same. is there. Therefore, the same code | symbol is attached | subjected to the structure similar to the heating cooker 200 of Embodiment 2, and the detailed description is abbreviate | omitted.

  As described above, in the heating cooker 200 according to the second embodiment, the heated object HR having a relatively large outer diameter is placed on the support member 130 (see FIG. 6A). Even when the heated object HS having a relatively small outer diameter is placed on the support member 130 (see FIG. 6B), the biasing means 39 of the movable portion 45 is the same distance. Only X2 is compressed, and the distance X2 is detected by the movement detecting means 46, whereby the pressing force of the contact portion 41 against the bottom of the heated objects HR and HS having different outer diameters is maintained substantially constant. be able to.

  On the other hand, when the heated object HS having a relatively small outer diameter is placed on the support member 130, the heated object HR having a relatively large outer diameter is placed on the support member 130. It is preferable to reduce the pressing force of the contact portion 41 against the bottom of the object to be heated.

  Therefore, in the heating cooker 300 according to the third embodiment, a plurality of movement detection means are disposed on the bar member 42 of the movable portion 45, and the distance X1S and the distance X1R detected by the movement amount detection means 51, for example, are set. The outer diameter of the object to be heated placed on the support member 130 is detected, and when the object to be heated HS having a relatively small outer diameter is placed on the support member 130, the movable portion 45 is used. The amount of compression of the urging means 39 is reduced to reduce the pressing force of the abutting portion 41 against the bottom of the heated object HS.

  Specifically, as shown in FIG. 7A, two movement detection means 246 and 247 are disposed on the bar member 42 of the movable portion 45. When the heated object HR having a relatively large outer diameter is placed on the support member 130, the control unit 50 drives the moving unit 49 to move the movable unit 45 of the distance detecting unit 40 vertically upward. The contact surface 41c of the contact portion 41 is brought into contact with the bottom portion of the heated object HR. Further, the control unit 50 detects the outer diameter of the heated object HR placed on the support member 130 based on the distance X1R detected by the movement amount detection means 51, and biasing means based on the outer diameter. A compression amount of 39 is defined. Then, the controller 50 continues to drive the moving means 49 even after the contact surface 41c of the contact portion 41 contacts the bottom of the heated object HR, and the back surface of the contact surface 41c of the contact portion 41 and the stick The bar member 42 of the movable portion 45 is moved with respect to the contact portion 41 until the urging means 39 disposed between the upper end portions 42a of the member 42 is compressed by a prescribed distance X2. The control unit 50 detects that the contact portion 41 has moved by the distance X2 with respect to the rod member 42 by the movement detection unit 247 out of the two movement detection units 246 and 247, and stops driving the movement unit 49. Then, the movement of the rod member 42 of the movable portion 45 by the moving means 49 is stopped.

  On the other hand, as shown in FIG. 7B, when the heated object HS having a relatively small outer diameter is placed on the support member 130, the control unit 50 drives the moving unit 49. The movable part 45 of the distance detection means 40 is moved vertically upward by the distance X1S, and the contact surface 41c of the contact part 41 is brought into contact with the bottom part of the heated object HR. Here, the vertical height of the bottom of the heated object HS shown in FIG. 7B is lower than the vertical height of the bottom of the heated object HR shown in FIG. Is relatively smaller than the distance X1R described above. Therefore, the control unit 50 detects the outer diameter of the heated object HS placed on the support member 130 based on the distance X1S detected by the movement amount detection means 51, and based on the outer diameter, FIG. A compression amount of the urging means 39 different from the case shown in FIG. The controller 50 continues to drive the moving means 49 even after the contact surface 41c of the contact portion 41 contacts the bottom of the heated object HS, and the back surface of the contact surface 41c of the contact portion 41 and the stick The bar member 42 of the movable portion 45 is moved with respect to the abutting portion 41 until the biasing means 39 disposed between the upper end portions 42a of the member 42 is compressed by the distance X2S defined. The control unit 50 detects that the contact part 41 has moved by the distance X2S with respect to the rod member 42 by the movement detection unit 246 out of the two movement detection units 246 and 247, and stops driving the movement unit 49. Then, the movement of the rod member 42 of the movable portion 45 by the moving means 49 is stopped.

  Here, since the distance X2S shown in FIG. 7B is set to be relatively smaller than the distance X2 shown in FIG. 7A, the pressing force of the abutting portion 41 against the bottom of the object HS to be heated is set. The pressing force of the contact part 41 against the bottom of the heated object HR can be made relatively smaller.

  In this way, a plurality of movement detection means are disposed on the bar member 42 of the movable portion 45, and the support surface 131 of the support member 130 is lowered toward the center of the support member 130, for example, detected by the movement amount detection means 51. By detecting the outer diameter of the object to be heated placed on the support member 130 using the distance X1S or the distance X1R, the attachment is made according to the outer diameter of the object to be heated placed on the support member 130. The amount of compression of the biasing means 39 can be precisely adjusted, and the to-be-heated object from the support member 130 can be prevented more effectively.

  In addition, when a heated object having a relatively large outer diameter is placed on the support member, or when a heated object having a relatively small outer diameter is placed on the support member, etc. The information on the outer diameter of the object to be heated detected by can be displayed, for example, on the front surface of the cooking device.

  As mentioned above, although Embodiment 1-3 of this invention was explained in full detail using drawing, a concrete structure is not limited to this Embodiment 1-3, and the range which does not deviate from the summary of this invention Even if there is a design change, etc., these are included in the present invention.

DESCRIPTION OF SYMBOLS 1 ... Inner cylinder, 2 ... Outer cylinder, 3 ... Gas flow path, 4 ... Flame port, 5 ... Blocking plate, 10 ... Burner, 11 ... Top plate, 12 ... Opening part, 13 ... Dial switch, 14 ... Cleaning switch, DESCRIPTION OF SYMBOLS 16 ... Front surface, 20 ... Ignition means, 30 ... Support member, 31 ... Support surface, 32 ... Support claw, 33 ... Support leg, 39 ... Energizing means, 40 ... Distance detection means, 41 ... Contact part, 41a ... Inside Tube 41b ... Outer cylinder 41c ... Contact surface 42 ... Bar member 42a ... Upper end of bar member 43 ... Vertical extension part 44 ... Horizontal extension part 45 ... Movable part 46 ... Movement detection means, 47 ... control line, 48 ... connection line, 48a ... magnet, 49 ... movement means, 50 ... control unit, 51 ... movement amount detection means, 100 ... cooking device, A ... air, G ... combustion gas, L1 ... Gas supply pipe, V11 ... Open / close valve, V12 ... Shut-off valve

Claims (12)

A burner for heating the object to be heated; a support member disposed around the burner for supporting the object to be heated above the burner; a bottom of the object to be heated supported by the support member; A cooking device comprising a distance detecting means for detecting a vertical distance from the burner,
The distance detecting means includes a movable part that is movable in the vertical direction below the object to be heated supported by the support member, a moving means that moves the movable part in the vertical direction, and a movable part that moves by the moving means. A movement amount detecting means for detecting a movement amount in the vertical direction,
The movable part is disposed in a state of being urged upward by a bar member connected to the moving means and an upper end of the bar member, and moves in a vertical direction relative to the bar member. When an external load that is in contact with the bottom of the object to be heated and is larger than the urging force acts in a direction opposite to the urging force, it is relative to the rod member according to the load. A contact portion that is movable vertically downward, and a movement detection means for detecting relative movement of the contact portion relative to the bar member,
The cooking device includes a gas flow rate changing mechanism that changes a gas flow rate of the combustion gas supplied to the burner according to a vertical movement amount of the movable part detected by the movement amount detection unit. A cooking device characterized by.   The upper end portion of the contact portion is disposed vertically below the support surface of the support member in a state where an object to be heated is not supported by the support member. The cooking device described.   The object to be heated is supported by the support member, the movable part is moved vertically upward by the moving means, the contact part of the movable part is in contact with the bottom part of the object to be heated, and the contact part is attached. The cooking device according to claim 2, wherein when the movable member moves by a predetermined distance relative to the rod member, the movement of the movable portion by the moving means stops vertically. .   The rod member extends in a vertical direction, and extends in a horizontal direction from a vertical extension portion in which the contact portion is disposed at an upper end portion thereof and a lower end portion of the vertical extension portion. The cooking device according to any one of claims 1 to 3, wherein the movement detecting means is provided in the horizontal extending portion.   The cooking device according to any one of claims 1 to 4, wherein the contact portion includes temperature detection means for detecting the temperature of the bottom of the object to be heated. The contact portion of the movable member of the support member and the distance detecting means is disposed concentrically with the burner,
The support member is inclined toward the center of the support member so that the vertical distance between the bottom of the object to be heated and the burner becomes closer as the outer diameter of the object to be supported becomes smaller, or The cooking device according to any one of claims 1 to 5, further comprising a support surface that is stepwise lowered. The movable portion includes a plurality of movement detection means, and each of the plurality of movement detection means is configured to detect different movements of the contact portion with respect to the rod member,
The heating cooker selects movement detection means for detecting movement of the contact portion relative to the bar member from the plurality of movement detection means based on an outer diameter of an object to be heated supported by the support member. The heating cooker according to claim 6.   The contact portion includes an inner tube and an outer tube, and an upper end portion of the outer tube includes a contact surface that contacts the bottom portion of the object to be heated. The cooking device according to any one of claims 1 to 7, wherein the cooking device is disposed inside a tube and is movable in a vertical direction relative to the inner tube.   The bar member is formed of a cylinder having a horizontal cross-section that is complementary to the inner cylinder of the abutting portion, and the rod member is disposed on the abutting portion to detect relative movement of the abutting portion with respect to the rod member. The connected connection line passes through the inner cylinder of the abutting portion and the cylinder of the bar member, and the connection line moves relative to the movement detecting means inside the cylinder of the bar member. Then, the said movement detection means detects the relative movement with respect to the said bar member of the said contact part, The heating cooker of Claim 8 characterized by the above-mentioned.   The gas flow rate changing mechanism is provided in a gas supply pipe connected to the burner, and adjusts the gas flow rate of the combustion gas flowing through the gas supply pipe; the movement amount detection means; and the movement amount. The cooking device according to any one of claims 1 to 9, further comprising: a control unit that controls the gas flow rate adjusting unit according to a movement amount of the bar member detected by the detecting unit.   The control unit controls the gas flow rate adjusting means based on the amount of movement of the bar member detected by the movement amount detecting means so that the gas flow rate of the combustion gas flowing through the gas supply pipe does not become larger than a predetermined amount. The cooking device according to claim 10, wherein the cooking device is a cooking device.   The heating cooker includes a cap that covers the burner, and the abutting portion of the movable portion of the distance detecting unit is in a state where an object to be heated is not supported by the support member and the burner is burned. The cooking device according to any one of claims 1 to 11, wherein when the burner is covered with the cap in a non-existing state, the burner can come into contact with the cap.

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