JP2012052774A - Gas cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cooking stove capable of detecting an object arranged on a trivet with ease by utilizing an existing component, providing easiness in understanding a flame condition, and preventing a top plate from being overheated while a gas burner is used.SOLUTION: The gas cooking stove 1 includes a gas burner 2, a lifting table 81 in which a trivet 3 and a cooking vessel temperature detecting means 71 are arranged, a lifting mechanism 8 for raising/lowering the lifting table 81, and a control means 10 for controlling raising/lowering operation of the lifting mechanism 8. The cooking vessel temperature detecting means includes a shaft part which is supported by the lifting table for vertical action so that a heat sensitive part at the upper end comes down when it is so energized upward as to be pressed by an object such as a cooking vessel A on the trivet, and an object detecting means 72 which detects whether or not an object is arranged on the trivet by detecting a vertical movement of the shaft part.

Description

  The present invention relates to a gas stove that can store a gas burner and five victories in a stove body when the gas burner is not used.

  Conventionally, when the gas burner is not used, the top plate is raised above the gas burner and the five virtues, and when using the gas burner, there is a gas stove that lowers the top plate to expose the gas burner and the five virtues (Patent Document) 1).

JP 2003-247723 A

  However, since the gas stove lowers the top plate and uses the gas burner, a concave portion is formed in the top plate during use of the gas burner. The concave portion is likely to generate heat due to the heating of the gas burner. The plate may be overheated, the state of fire is difficult to understand, and the top plate is lowered, so that the appearance of the gas stove as a whole is not preferable.

  Moreover, in the said gas stove, many reflective photosensors for detecting an object to be heated are provided around the opening where the virtues of the top plate portion are arranged, and all the photosensors for detecting an object to be heated detect the cooking container. If it is not possible, the top plate portion is moved up and down on the assumption that there is no cooking container on Gotoku (paragraph 0033 and paragraph 0034 of Patent Document 1). However, since it is necessary to provide a large number of optical sensors for detecting an object to be heated for each gas burner, not only the number of parts increases, but also the sensor mounting work and wiring work become complicated, and the number of wirings also increases.

  The present invention has been made in view of the above circumstances, and the top plate is not overheated during use of the gas burner, and the state of fire can be easily understood. It is an object of the present invention to provide a gas stove that can detect an object placed on Gotoku.

The gas stove according to the present invention is
In the gas stove in which the cooking vessel temperature detecting means for detecting the temperature of the cooking container in contact with the bottom of the cooking container on the gas burner, Gotoku and Gotoku is arranged at the opening of the top plate arranged at the upper part of the stove body,
A lifting platform on which gas burners, virtues and cooking vessel temperature detection means are disposed;
An elevating mechanism for elevating the elevating platform between a use position where the upper part of the virtues is located above the top plate and a storage position where the gas burner and the virtues are stored in the stove main body,
Control means for controlling the lifting operation of the lifting mechanism,
The cooking vessel temperature detection means includes a shaft portion that is supported so as to move up and down on the lifting platform so that it is lowered when the heat sensitive portion at the upper end is urged upward and pressed by an object such as a cooking vessel on the virtues. And an object detection means for detecting whether or not an object is arranged on the five virtues by detecting the vertical movement of the shaft portion.

With the above configuration, the position of the top plate does not change, and the lifting platform on which the gas burner, the virtues and the cooking vessel temperature detection means are installed is moved up and down with respect to the top plate by the lifting mechanism, so when using the gas burner, The correlation between the distances between the five virtues is maintained, a good combustion state can be secured, and the top plate is not overheated during use of the gas burner, and the fire state of the gas burner is easy to understand. Further, the appearance of the entire gas stove is good regardless of the state of use of the gas burner, and when the gas burner is not used, the top plate can be used effectively as a cooking table.
Moreover, since the object detection means is provided using the existing cooking container temperature detection means, it is possible to easily detect the presence or absence of an object such as a cooking container on the basis of virtues.

  The gas stove according to the present invention further includes a lid for closing the opening of the top plate when the gas burner and the virtues are in the storage position, and the control means controls the lifting mechanism that raises the lifting platform from the storage position to the use position. When performing, when it detects that the cover body is arrange | positioned in the opening part of a top plate in the storage position by an object detection means, a predetermined clearance gap is formed between the bottom face of a cover body, and a top plate. It is preferable to perform a control for once raising the lifting platform to the lid removal position.

As a result, when the gas burner is not used, the gas burner and five virtues are stored in the stove body and the top plate opening is closed with a lid, so that it can be used widely and effectively as a cooking table. It can be prevented from entering the inside of the stove body.
Furthermore, when raising the lifting platform from the stowed position to the working position in order to use the gas burner, the lifting platform is temporarily raised to the lid removal position, and then the lifting operation of the lifting platform is stopped. Can be easily removed from the top board. Moreover, even if a cooking container or the like is placed on the lid, the lifting operation of the lifting platform is stopped before the cooking container or the like is turned over, and the cooking container can be removed.
In addition, since the object detection means can detect the presence or absence of the lid on the five virtues, the control means automatically raises the lifting platform when the lid is removed after the lifting platform is lifted and stopped at the lid removal position. It is possible to control to resume. In addition, when the gas burner and the virtues are stored in the stove main body, if the lid is not arranged, the control means can notify the user to arrange the lid.

Further, in the gas stove according to the present invention, the control means is configured such that an object is placed on the virtues based on the detection result of the object detection means when the lifting platform is moving up and down between the storage position and the use position. In this case, it is preferable to perform a control for stopping the lifting operation of the lifting mechanism.
As a result, the lifting / lowering operation of the lifting platform can be controlled based on the detection result of the object detection means, and the lifting / lowering operation is prevented from being continuously performed in a state where an object such as a cooking container is placed on the virtues. Is done. Therefore, it is possible to prevent the cooking container placed on the five virtues from becoming unstable or overturning, and it is possible to prevent an extra load from being applied to the lifting mechanism during the lifting operation.

  Furthermore, the gas stove according to the present invention includes position detection means for detecting the vertical position of the lifting platform, and the control means is configured to control the operation of the lifting mechanism based on the detection result of the position detection means. preferable.

  Thereby, an elevator stand can be reliably moved so that a gas burner and five virtues may be arrange | positioned at a storage position and a use position. Furthermore, when a lid is provided, the lifting platform can be reliably moved to the lid removal position. Further, even if the gas burner moves up and down so that the position of the gas inlet of the mixing tube in the gas burner moves up and down with respect to the gas jetting part for jetting the gas fuel, the control means is based on the detection result of the position detecting means. The elevating mechanism can be reliably controlled so that the center position of the gas receiving port of the mixing tube matches the position of the gas ejection portion.

  As described above, according to the gas stove according to the present invention, since the lifting platform on which the gas burner and the five virtues are arranged is moved up and down, the correlation of the distance between the gas burner and the five virtues is maintained when the gas burner is used. A good combustion state can be secured, and the top plate can be overheated, and the fire state of the gas burner can be easily understood. Furthermore, the appearance of the whole gas stove is good regardless of the state of use of the gas burner, and when the gas burner is not used, the top plate can be used effectively as a cooking table. Moreover, since the object detection means is provided by using the cooking container temperature detection means, the presence / absence of an object such as a cooking container on the virtues can be easily detected when controlling the lifting / lowering table in which the gas burner and the virtues are arranged together. be able to.

It is a perspective view which shows the external appearance structure of the gas stove which concerns on this embodiment. It is sectional drawing which shows the state which has a gas burner and virtues in a use position. It is explanatory drawing which shows the state which assembled | attached the connection state of a gas burner and an instrument stopper, a gas burner, five virtues, and a burner ring to a support member. It is explanatory drawing for showing the track | orbit of the crank pipe which connects the nozzle connected to the mixing pipe of a gas burner, and the connecting pipe of an instrument plug. It is explanatory drawing which shows operation | movement of a pan bottom temperature sensor and an object detection means. It is a block diagram which shows the signal structure of a control part, each switch, a position detection means, an object detection means, and a raising / lowering mechanism. It is sectional drawing which shows the state which has a gas burner and five virtues in a storage position. It is sectional drawing which shows the state which has a gas burner and five virtue in a cover body removal position. It is a flowchart explaining the control which raises / lowers a gas burner and five virtues.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the gas stove 1 according to the present embodiment is applied to a built-in type, and is a gas stove 1 in which a plurality of gas burners 2 are housed in a rectangular box-shaped cabinet C whose top is opened. The stove main body 11 is accommodated. The gas stove 1 may be provided with one gas burner.

  As shown in FIGS. 1 and 2, the gas stove 1 has an upper open portion of the stove main body 11 covered with a top plate 12 made of glass or enamel, and a gas burner 2 and five virtues at predetermined positions on the top plate 12. A plurality of openings 12a in which 3 is disposed are formed. In these openings 12a, the burner part 21 and the five virtues 3 of the gas burner 2 are arranged so as to be movable up and down integrally. The top surface of the top plate 12 is substantially the same height as the top surface of the cabinet C. Below each opening 12a, the range of vertical movement of the burner portion 21 as shown in FIGS. A cylindrical inner wall 12b having a height longer than the length is formed.

  As shown in FIG. 3, the gas burner 2 includes a burner portion 21 and a mixing tube 24 that supplies a mixed gas of gas fuel and air to the burner portion 21, and the mixing tube 24 is a crank-shaped first connection. It is connected to the instrument plug 5 via the pipe 41 and the second connection pipe 42. The burner portion 21 includes a burner body 22 formed by an inner cylinder 22 a and an outer cylinder 22 b extending in the vertical direction, and a circular burner head 23 placed on the burner body 22, and an outer peripheral portion of the burner head 23. A number of flame holes 23a are formed. A downstream end portion of the mixing tube 24 is connected to the lower end portion of the burner body 22, and an ignition electrode (igniter) and a flame detector (not shown) are externally attached around the burner body 22.

  A gas inlet serving as an upstream end of the mixing pipe 24 is formed with a supply port 26a to which primary air is supplied, and is covered with a closing body 26 to which a nozzle 25 serving as a gas outlet is attached. In addition, without providing the closing body 26, the clearance gap between the nozzle 25 and the gas receiving port of the mixing pipe 24 can also be used as the supply port to which primary air is supplied. A distal end portion of a downstream crank-shaped first connection pipe 41 is rotatably connected to the nozzle 25 via a first rotary joint 43. The upstream end of the first connecting pipe 41 is connected to an upstream crank-shaped second connecting pipe 42 via a second rotary joint 44 so as to be rotatable. The connecting pipe 54 connected to the outlet 53 of the instrument plug 5 is rotatably connected to the second connecting pipe 42 via the third rotary joint 45.

  The first and second connecting pipes 41 and 42 and the first to third rotary joints 43 to 45 are in a state where the positions of the third rotary joint 45 and the connecting pipe 54 are fixed as shown in the explanatory view of FIG. As the mixing tube 24 and the burner portion 21 move up and down, the first connection tube 41 and the second connection tube 42 rotate, and the position of the nozzle 25 moves up and down on the same line in the vertical direction. Yes. Thus, even if the mixing pipe 24 is moved up and down, the mixing pipe 24 is always connected to the instrument plug 5 via the first and second connecting pipes 41 and 42 and the first to third rotary joints 43 to 45. When the gas fuel supplied from the first connection pipe 41 is jetted and supplied from the nozzle 25 into the mixing pipe 24, the primary air is sucked from the supply port 26a as the gas fuel is jetted and supplied to the gas fuel and the primary fuel. Air is mixed and supplied to the burner unit 21.

  The instrument plug 5 is disposed between the gas pipe and the gas burner 2 and controls gas supply from the gas pipe to the gas burner 2. The instrument plug 5 is formed with an internal passage of gas communicating from the inlet 52 to the outlet 53 in the valve housing 51. Although not shown in the figure, an electromagnetic safety valve and an original gas are connected to the internal passage from the upstream side. A valve and a gas amount control valve are housed. A communication tube 54 is connected to the outlet 53 of the instrument plug 5.

  In each opening 12 a formed in the top plate 12, referring to FIG. 3, a burner ring 6 in which a hole 61 through which the burner body 22 is inserted is formed at the center is arranged. The burner ring 6 is installed so that a gap formed between the periphery of the opening 12a of the top plate 12 is as small as possible. An annular step 62 for placing the virtues 3 is formed on the outer periphery of the burner ring 6. The five virtues 3 are composed of an annular five virtue frame 31 that is detachably fitted to the annular stepped portion 62 of the burner ring 6 and a plurality of five virtue claws 32 that project from the five virtue frame 31 at equal intervals. The five virtue claws 32 are formed to be higher than the burner head 23 of the gas burner 2.

  As shown in FIG. 5, in the inner cylinder 22 a of the burner body 22, a heat sensitive part 71 b formed at the tip of the shaft part 71 a comes into contact with the bottom part of the cooking container A such as a pan to reduce the bottom temperature of the cooking container A. A pan bottom temperature sensor 71 (cooking container temperature detecting means) for detection is provided. The pan bottom temperature sensor 71 is provided on the lifting platform 81 of the lifting mechanism 8 to be described later together with the gas burner 2 and the virtues 3 by supporting the shaft portion 71 a on the support body 17 that supports the burner ring 6 and the burner portion 21. And the heat sensitive part 71b used as the upper end part of the axial part 71a protrudes upwards rather than the virtuosity claw 32. FIG. The pan bottom temperature sensor 71 is provided in a state in which the shaft portion 71a is biased upward by an urging means such as a spring. When the cooking container A is placed on the virtues 3, the pan bottom temperature sensor 71 is pressed against the pan bottom. It is configured to detect the temperature of the pan bottom. The temperature detection result of the pan bottom temperature sensor 71 is output to the control unit 10. Further, an object such as a cooking container A placed on the virtues 3 or a lid 18 to be described later is detected at the base end portion of the shaft portion 71a of the pan bottom temperature sensor 71 by detecting the elevation state of the pan bottom temperature sensor 71. An object detecting means 72 for detecting the above is provided.

  In the present embodiment, the object detection means 72 uses a micro switch, and is turned on when the protrusion 72a provided on the shaft part 71a that can move up and down of the pot bottom temperature sensor 71 and the protrusion 72a are lowered to a predetermined position. The switch part 72b which operate | moves is provided. When the cooking container A or the lid 18 is not placed on the Gotoku 3, the object detection means 72 is turned off without the pan bottom temperature sensor 71 being in the raised position and the protrusion 72a contacting the switch 72b (FIG. 5). (See (a)) When the cooking container A or the like is placed on Gotoku 3, the pan bottom temperature sensor 71 is in the lowered position and the projection 72a contacts the switch 72b and is turned on (FIG. 5B). )reference). Therefore, the presence / absence of the cooking container A or the lid 18 on the gas burner 2 is detected from the on / off signal of the object detection means 72. The detection result of the object detection means 72 is also output to the control unit 10.

  The burner portion 21, the mixing tube 24, and the pan bottom temperature sensor 71 of the gas burner 2 are disposed on a lifting table 81 of the lifting mechanism 8, and a burner ring 6 is attached to a cylindrical support 17 fixed to the lifting table 81. And the burner part 21 and the pan bottom temperature sensor 71 are being fixed through the fixing member which is not shown in figure. The support body 17 is comprised from the cylinder part 17a and the ceiling part 17b which block | closes the upper part of this cylinder part 17a, and this ceiling part 17b closely_contact | adheres to the inner wall 12b of the opening part 12a formed in the top plate 12 via an O-ring. It is formed in the size to be. A hole through which the burner body 22 is inserted is formed at the center of the ceiling portion 17b. The burner body 22 is fixed to the support body 17 with the burner body 22 inserted through the hole, and the burner body 22 is fixed to the upper surface of the ceiling portion 17b. The ring 6 is placed and the burner ring 6 is fixed to the ceiling portion 17b with bolts or the like.

  The elevating mechanism 8 is provided between the elevating table 81, a plate-like fixing member 82 that is disposed below the elevating table 81 and is fixed to the bottom surface of the stove main body 11, and the fixing member 82 and the elevating table 81. Pantograph jack. In the link arm 83 constituting the pantograph jack, one pantograph mechanism 84 is constituted by the four link arms 83, and the two pantograph mechanisms 84 are arranged on the fixing member 82 so as to face each other.

  In the pantograph mechanism 84, two link arms 83 are overlapped in an X-shape, and the center portion in the longitudinal direction is rotatably supported by the end portion of the shaft 85a. A two-stage pantograph mechanism 84 is configured by connecting the ends in the longitudinal direction of 83 with the end of the other X-shaped link arm 83 and the end of the shaft 85b. Two pantograph mechanisms 84 having such a configuration are arranged opposite to each other and connected to each other by the shafts 85a and 85b. And the edge part of the remaining four link arms 83 of an upper side edge part and a lower side edge part is connected by the axis | shaft 85c.

  One shaft 85c that connects the lower end portions of the link arm 83 is fixed to a pair of lower guide plates 86 provided on the fixing member 82 by bolts 87, and the other lower shaft 85c has both ends thereof. The inside of the lower guide hole 86a can be slid in the horizontal direction by fitting into a lower guide hole 86a made of a long hole formed in the lower guide plate 86. In addition, one shaft 85c that connects the upper end of the link arm 83 is fixed to a pair of upper guide plates 88 attached to the lower surface of the elevator 81 with bolts 87, and the other upper shaft 85c Both end portions are fitted into an upper guide hole 88a formed of a long hole formed in the upper guide plate 88, and the inside of the upper guide hole 88a can be slid in the horizontal direction. The shafts 85c fixed to the upper and lower guide plates 86 and 88 are fixed at the same position in the vertical direction.

  In addition, an insertion hole through which the ball screw 89 is inserted is formed in the central portion in the axial direction of each shaft 85b. The insertion hole of one of the shafts 85 b arranged on the tip side (the sliding shaft 85 c side) of the ball screw 89 is formed as a screw hole that meshes with the ball screw 89. A stopper 89 a that prevents the ball screw 89 from moving in the axial direction is provided on the other shaft 85 b that is not provided with a screw hole disposed on the base end side of the ball screw 89. A lift drive motor 80 capable of forward and reverse rotation is connected to the base end of the ball screw 89. When the elevating drive motor 80 is driven to rotate the ball screw 89, the shaft 85b having a screw hole approaches and separates from the other shaft 85b by the action of the ball screw 89, and the elevating platform 81 is moved up and down by the pantograph mechanism 84.

  The elevating mechanism 8 moves the elevating table 81 between the highest position and the lowest position, and the vertical direction of the elevating table 81 detected by the position detecting means 9 by the control unit 10 described later. Based on this position, the elevator is controlled to move up and down within the lifting operation range. The most elevated position is a position where the outer peripheral edge of the burner ring 6 coincides with the opening 12a formed in the top plate 12, and is a use position where the gas burner 2 can be used (see FIG. 2). The lowest position is a storage position where the five virtue claws 32 of the five victories 3 arranged on the burner ring 6 are located below the top plate 12 and the gas burner 2 and the five virtues 3 are accommodated in the stove main body 11 ( (See FIG. 7). In this storage position, the heat sensitive part 71b of the pan bottom temperature sensor 71 protrudes upward from the top plate 12 in an unloaded state.

  The highest position (use position) and the lowest position (storage position) are detected by, for example, two upper and lower upper microswitches 91 and 92 provided in the stove body 11 as shown in FIG. The A scale sensor 93 is also provided in the stove main body 11 for finely detecting the position while the elevating table 81 is moved up and down. The upper micro switch 91, the lower micro switch 92, and the scale sensor 93 constitute the position detecting means 9.

  Further, as shown in FIG. 7, when the gas burner 2, the virtues 3 and the burner ring 6 are in the storage position, the opening 12 a of the top plate 12 is closed with a lid 18 formed of designed transparent glass. It has become. Note that the heat sensitive portion 71 b of the pan bottom temperature sensor 71 protruding upward from the top plate 12 is pressed by the lid 18 and disposed on the lower surface side of the top plate 12. As described above, when the gas burner 2 is not used, the gas burner 2, the virtues 3 and the burner ring 6 are accommodated in the stove main body 11, and the opening 12 a of the top 12 is closed with the lid 18, thereby Can be used effectively as a cooking table, and when the gas burner 2 is not used, dust and dust can be prevented from entering the storage space in the opening 12a.

  On the front side of the top plate 12 (on the side where the user stands), an operation portion 12c for performing operations such as ignition and extinguishing of the gas burner 2 is provided corresponding to each gas burner 2 (see FIG. 1). The operation unit 12c is a touch operation type. As shown in the block diagram of FIG. 6, command information for igniting and extinguishing the power switch 13 and the gas burner 2 (for example, command information by an electric signal of a touch switch such as a capacitance type) is displayed on the operation unit 12 c. Point extinguishing switch 14 sent to the control unit 10, burner heating power adjustment switch for sending command information for adjusting the combustion amount of the gas burner 2 to the control unit 10, and command information for performing the raising / lowering operation of the gas burner 2 are sent to the control unit 10 A lift switch 15 and a lock switch 16 for sending command information for refusing operation of each switch to the control unit 10 are provided. When the lock switch 16 is operated, control is performed such that only the operation of the power switch 13 is accepted. The control unit 10 includes a microcomputer and controls the operation of the gas stove 1.

  The control unit 10 controls the elevating mechanism 8 so that the elevating table 81 on which the burner unit 21, the virtues 3 and the burner ring 6 are moved up and down is operated by operating the elevating switch 15. The control unit 10 sets the use position (see FIG. 2) in which a part of the burner unit 21 protrudes above the top plate 12, the burner unit 21, the five virtues 3 and the burner ring 6 to the top plate 12. The drive of the raising / lowering drive motor 80 is controlled so that it switches to the storage position (refer FIG. 7) made into a non-projecting state.

  Further, the gas stove 1 is provided with a buzzer 19 that is notified by a command from the control unit 10 (see FIG. 6). The control unit 10 uses the object detection means 72 to cover the lid after the burner unit 21 and the like are moved to the storage position. When it is detected that 18 is not placed, the buzzer 19 informs the user to place the lid 18.

  Further, as shown in FIG. 8, when the control unit 10 raises the lifting platform 81 from the storage position to the use position by the lifting mechanism 8, the scale sensor 93 is detected even if the object detection means 72 detects the lid 18. On the basis of the position detection result obtained by the above, control is performed to raise the lid to a lid removal position where a predetermined gap is formed between the bottom surface of the lid 18 and the top plate 12 so that a finger can be hung on the lid 18. And if the raising / lowering stand 81 raises to a cover removal position, the raising / lowering drive motor 80 will be stopped once. At this time, you may perform control which alert | reports so that the cover body 18 may be removed with the buzzer 19. FIG. Thereafter, based on the detection result of the object detection means 72, the control unit 10 performs control to drive the lift 81 up to the use position when the lid 18 is removed.

  In this way, when the lifting mechanism 8 is driven to rise from the storage position, the driving of the lifting drive motor 80 is stopped while the lid 18 is slightly lifted from the opening 12a. It becomes easy to remove. Moreover, once the lid 18 is removed, the elevating mechanism 8 is not lifted until the lid 18 is removed. Therefore, even if the cooking container A or the like is placed on the lid 18, the cooking container A or the like is turned over. The cooking container A can be removed before.

  Next, control of the operation of the elevating mechanism 8 performed by the control unit 10 by operating the elevating switch 15 in the gas stove 1 having the above configuration will be described based on the flowchart of FIG.

  First, after the power switch 13 is turned on with the burner unit 21 and Gotoku 3 in the storage position shown in FIG. 7, the up / down switch 15 is not turned on (“No” in S1), and remains unchanged for a predetermined time (eg, 3 When (minute) has elapsed (S3), the power is automatically turned off. On the other hand, if the elevation switch 15 is turned ON within a predetermined time (“Yes” in S1), the elevation drive motor 80 is driven (S2), and the elevation table 81 is changed to the one shown in FIG. 8 based on the detection result of the scale sensor 93. When it is raised to the lid removal position shown (“Yes” in S4), the elevation drive motor 80 is stopped, the elevation table 81 is once raised and stopped, and a buzzer that prompts removal of the lid 18 is sounded (S5).

  Next, based on the detection result of the object detection means 72 provided in the pan bottom temperature sensor 71, it is determined whether or not the lid 18 is placed on the virtues 3 (S6), and the lid 18 is removed. In this case, when the lift switch 15 is turned on (“Yes” in S7), the lift drive motor 80 is driven (S8), and the mounting table 81 is moved up to the use position of the gas burner 2 and Gotoku 3 shown in FIG. Let When the lid 18 is removed at the lid removal position (“Yes” in S6), the elevation drive motor 80 is automatically driven without turning on the elevation switch 15, and the elevation table 81 is moved. You may control to raise.

  Then, during the upward movement of the lifting platform 81 from the lid removal position to the use position, it is monitored whether or not an object such as the cooking container A or the lid 18 is placed on the virtues 3 based on the detection result of the object detection means 72. (S9). If the cooking container A or the like is placed on the Gotoku 3 while the elevator 81 is raised, the process returns to step S5, the buzzer is sounded, the elevator drive motor 80 is stopped, and the elevator 81 is stopped from rising. . When the lifting / lowering table 81 rises to the use position without placing the cooking container A or the like on the Gotoku 3 (“Yes” in S10), the lifting / lowering drive motor 80 is stopped (S11), and the lifting of the lifting / lowering table 81 is finished. .

  Thereafter, when it is determined that the cooking container A is placed on Gotoku 3 based on the detection result of the object detection means 72 provided in the pan bottom temperature sensor 71 (“Yes” in S12), the fire extinguishing switch 14 Is turned on (“Yes” in S13), the igniter is turned on for a predetermined time (for example, 3 seconds), and the gas burner 2 is ignited (S14 to S16). When the cooking by the gas burner 2 is finished and the point fire extinguishing switch 14 is turned off, the gas burner 2 is extinguished (S17 to S18). In Step S12, when the cooking container A is not placed on the Gotoku 3 (“No” at S12), the gas burner 2 and Gotoku 3 are lowered to the storage position in the stove main body 11 as will be described later. Therefore, the presence / absence of an ON operation of the lift switch 15 is monitored (S20). Further, after the gas burner 2 is extinguished, when the cooking container A is placed on the Gotoku 3 (“No” in S19), the process returns to step S13 so that the ignition operation of the gas burner 2 can be performed. Yes.

  Next, when the gas burner 2 and the virtues 3 are in the use position and the gas burner 2 is not being used, the control enters a standby state for lowering the gas burner 2 and the virtues 3 to the storage position in the stove main body 11. And in the state where cooking vessel A is not placed in Gotoku 3 from the detection result of object detection means 72 provided in pan bottom temperature sensor 71 with gas burner 2 and Gotoku 3 ("Yes" in S19), When the elevating switch 15 is turned on (“Yes” in S20), the elevating drive motor 80 is driven (S21), and the elevating table 81 on which the gas burner 2 and the virtues 3 are arranged is lowered.

  During the downward movement of the lifting / lowering table 81, it is monitored from the detection result of the object detection means 72 whether or not the cooking container A, the lid 18 and the like are placed on the virtues 3 (S22). When the cooking container A, the lid 18 or the like is placed on the Gotoku 3 while the elevator 81 is lowered, the buzzer is sounded, the elevator drive motor 80 is stopped, and the elevator 81 is stopped from descending (S26). ). Thereafter, when the cooking container A or the like is removed from the top of Gotoku 3, the process returns to step S20, and the lowering operation of the lifting platform 81 is resumed by the ON operation of the lifting switch 15 again. When the lifting platform 81 is lowered to the storage position without placing the cooking container A or the like on the Gotoku 3 (S23), the lifting drive motor 80 is stopped (S24), and the lowering of the lifting platform 81 is finished. Thereafter, the OFF operation of the power switch 13 is monitored (S25). When the power switch 13 is turned OFF, the power is turned OFF. When the power switch 13 is not turned OFF, the process returns to step S1 for a predetermined time ( S3), a standby state for the control for raising the elevator 81 is entered.

  As described above, according to the gas stove 1 of the present embodiment, the gas burner 2, the virtues 3, and the pan bottom temperature sensor 71 are disposed on the lifting platform 81 while maintaining their positional relationship, and the lifting platform 81 is mounted on the top plate 12. On the other hand, the distance between the gas burner 2 and the virtues 3 can always be maintained, and a good combustion state can be secured when the gas burner 2 is used. Moreover, there is no fear that the top plate 12 is overheated while the gas burner 2 is used, and the fire state of the gas burner 2 is easy to understand. Furthermore, the appearance of the whole gas stove is good regardless of the use state of the gas burner 2, and when the gas burner is not used, the top plate 12 can be used effectively as a cooking table. In particular, by covering the opening 12a with the lid 18 in a state where the gas burner 2 and the virtues 3 are accommodated in the stove main body 11, the use area of the top plate 12 as a cooking table can be increased, and dust, dirt, etc. Can be prevented from entering the inside of the stove body 11. Moreover, since the position detection means 9 is provided, the gas burner 2 and the virtues 3 can be accurately moved between the storage position and the use position.

  Furthermore, if the cooking container A is placed on the stakes 3 during the lifting / lowering operation of the gas burner 2 and the virtues 3 based on the detection result of the object detection means 72, the lifting / lowering operation is forcibly stopped. It is possible to prevent A from becoming unstable or tipping over, and to prevent a load from being applied to the lifting mechanism 8 during the lifting operation.

  Moreover, since the object detection means 72 is provided using the existing pot bottom temperature sensor 71 which presses the bottom face of the cooking container A and detects temperature, it is necessary to provide a large number of object detection means around the virtues as in the past. In addition, the wiring structure can be prevented from becoming complicated, and the presence / absence of an object such as the cooking container A on the virtues 3 can be easily detected when the lifting / lowering table 81 is controlled to be lifted / lowered.

In addition, this invention is not limited to the said embodiment, A various change can be given within the scope of the present invention.
For example, in this embodiment, the elevating mechanism 8 is configured to drive the pantograph mechanism 84 by the action of the ball screw 89 by the rotational drive of the elevating drive motor 80. However, the pantograph mechanism 84 is driven by a hydraulic actuator using a hydraulic pump. It can also be done. Further, the elevating mechanism 8 may be configured such that a hydraulic cylinder or an air cylinder is provided below the elevating table 81 and the elevating table 81 is moved up and down by the hydraulic cylinder or the air cylinder. Furthermore, the elevating mechanism 8 may be configured to include a rack that is formed integrally with the elevating platform 81, a pinion that meshes with the rack, and a motor that rotates the pinion.

  In the above embodiment, the mixing tube 24 of the gas burner 2 and the instrument plug 5 are always connected by the upper and lower crank-shaped connection pipes and a plurality of rotary joints. However, a nozzle is formed in the instrument plug 5. The nozzle and the gas inlet of the mixing tube 24 may be separated from each other, and a guide member may be provided on the nozzle so that the mixing tube 24 is disposed at a set position. On the basis of the detection result of No. 9, the nozzle of the instrument plug 5 may be controlled to be disposed at a predetermined position of the gas inlet of the mixing tube 24 when the mixing tube 24 rises to the use position. . Further, a metal flexible pipe may be used instead of the crank-shaped connecting pipe.

  Further, in order to easily recognize the lifting operation of the lifting platform, a lamp that is lit during the lifting may be provided on the inner wall 12b formed in the opening 12a of the top plate 12.

  Further, in the present embodiment, the burner body 22, the burner ring 6, and the support body 17 of the burner portion 21 are separated from each other. However, the burner body 22 and the burner ring 6 may be formed integrally or burner ring. 6 and the support 17 may be formed integrally, the burner body 22 and the support 17 may be formed integrally, or all may be formed integrally. Moreover, although the support body 17 integrally formed the cylinder part 17a and the ceiling part 17b, you may form each separately.

  In the present embodiment, since the gas burner 2 is an external flame type, the gas burner 2, the virtues 3, and the pan bottom temperature sensor 71 provided with the object detection means 72 are arranged on the lifting platform 81 and moved up and down. In the case of the internal flame type, the gas burner 2 is fixed to the stove main body 11, and the pan bottom temperature sensor 71 including the virtues 3 and the object detection means 72 is arranged on the lifting platform 81 to be moved up and down. it can.

DESCRIPTION OF SYMBOLS 1 Gas stove 2 Gas burner 3 Gotoku 8 Lifting mechanism 9 Position detection means 10 Control part (control means)
DESCRIPTION OF SYMBOLS 11 Stove body part 12 Top plate 12a Opening part 18 Cover body 21 Burner part 71 Pan bottom temperature sensor (cooking container temperature detection means)
71a Shaft portion 71b Heat sensitive portion 72 Object detection means 80 Lift drive motor 81 Lift platform 83 Link arm 84 Pantograph mechanism 89 Ball screw 91 Upper micro switch 92 Lower micro switch 93 Scale sensor A Cooking container

Claims (4)

In the gas stove in which the cooking vessel temperature detecting means for detecting the temperature of the cooking container in contact with the bottom of the cooking container on the gas burner, Gotoku and Gotoku is arranged at the opening of the top plate arranged at the upper part of the stove body,
A lifting platform on which gas burners, virtues and cooking vessel temperature detection means are disposed;
An elevating mechanism for elevating the elevating platform between a use position where the upper part of the virtues is located above the top plate and a storage position where the gas burner and the virtues are stored in the stove main body,
Control means for controlling the lifting operation of the lifting mechanism,
The cooking vessel temperature detection means includes a shaft portion that is supported so as to move up and down on the lifting platform so that it is lowered when the heat sensitive portion at the upper end is urged upward and pressed by an object such as a cooking vessel on the virtues. A gas stove comprising object detection means for detecting whether or not an object is arranged on the five virtues by detecting the vertical movement of the shaft portion. The gas stove according to claim 1, wherein
When the gas burner and the five virtues are in the storage position, the lid for closing the opening of the top plate is provided,
When the control means controls the lifting mechanism that raises the lifting platform from the storage position to the use position, the object detection means detects that the lid is disposed at the opening of the top plate at the storage position. Is a gas stove configured to perform control to temporarily raise the lifting platform to a lid removing position where a predetermined gap is formed between the bottom surface of the lid and the top plate. The gas stove according to claim 1 or 2,
The control means moves the lifting mechanism up and down when an object is placed on the virtues based on the detection result of the object detection means when the lifting platform is moving up and down between the storage position and the use position. A gas stove configured to perform stop control. The gas stove according to any one of claims 1 to 3,
Provided with a position detection means for detecting the vertical position of the lifting platform,
The control means is a gas stove configured to control the operation of the lifting mechanism based on the detection result of the position detection means.

Images