JP2003247724A - Gas range - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas range wherein appropriate heating of a heating object and cleaning of a top plate when being unused are facilitated. <P>SOLUTION: This gas range is provided with a burner B heating the heating object N mounted on and supported with a mount support part 4, and burner raising/lowering means E raising/lowering the burner B. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stove provided with a burner for heating an object to be heated which is placed and supported by a placing and supporting section.

[0002]

2. Description of the Related Art Such a gas stove is one in which an object to be heated such as a pot is placed and supported on a placing support portion, and an object to be heated thus placed and supported on the placing support portion is heated by a burner. Is. Further, the mounting support part is provided so that the vertical position is located at a fixed position, and receives and supports the object to be heated at a constant height, and as a specific example of the mounting support part, , For example, there are Gotoku and top plate. When Gokutoku is used as the mounting support portion, for example, the burner is provided so as to project above the top plate, and the Gokutoku is provided such that the top thereof projects above the burner. Further, when the top plate is used as the mounting support part, a burner is provided so as to retreat below the top plate so that the space below the top plate is used as a combustion chamber for combustion, and the combustion in the combustion chamber is performed. Provide an exhaust fan that discharges exhaust gas. In such a gas stove, conventionally, the burner is fixedly provided so as to be located at a fixed position in the vertical direction.

[0003]

By the way, the burner is usually constructed so that the combustion amount can be changed and adjusted. However, conventionally, since the burner is provided at a fixed position in the vertical direction and the height of the burner is constant, it is difficult to appropriately heat the object to be heated, as described below. There was a problem. That is, when the burner is adjusted so that the combustion amount becomes small and the flame becomes small,
Since the flame is too far away from the heated object, the positional relationship between the heated object and the flame is such that the heated object cannot be heated efficiently, and it is difficult to heat the heated object appropriately. It was Alternatively, even if the minimum combustion amount of the burner is set to be small so that the heating and cooking can be appropriately performed with low heat, there is a limit because the stable combustion property must be maintained. Therefore, when the burner is burned to the minimum combustion amount and cooked by heating over low heat, the heating power may be too strong and charring may occur even if the burner is burned at the minimum combustion amount. , It is difficult to cook stew on low heat,
It was difficult to properly heat the object to be heated.

Further, in the conventional gas stove in which the burner is provided so as to project above the top plate, the burner always projects above the top plate, so that the burner is not burned when not in use. When cleaning the board,
There was a problem that the burner got in the way and it was difficult to clean.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a gas stove in which it is easy to appropriately heat an object to be heated or to easily clean the top plate when not in use. Especially.

[0006]

Means for Solving the Problems [Invention of Claim 1]
The characteristic configuration according to claim 1 is that a burner elevating means for elevating and lowering the burner is provided. According to the characteristic configuration of claim 1, since the burner elevating means for elevating and lowering the burner is provided, the burner elevating means may change and adjust the height of the burner with respect to the mounting support part, for example. Is possible, or
When using the burner after burning it, the burner projects above the top plate.When not using the burner, the burner is at the same height as the top plate or retracts below the top plate. It is possible to switch so that Then, when the height of the burner with respect to the mounting support portion is changed and adjusted by the burner elevating means, it becomes easy to appropriately heat the object to be heated, as will be described below. For example, according to the combustion amount of the burner, if the burner height is adjusted so that it becomes higher as the combustion amount of the burner becomes smaller, the combustion amount is changed and the size of the flame is changed. , It is possible to bring the position of the heated object and the flame into a positional relationship capable of heating the heated object with high thermal efficiency, such as bringing the tip of the inner flame portion having the highest temperature closer to the heated object, It is easy to properly heat the object to be heated. In addition, if the burner's combustion amount is minimized and the burner's height is adjusted to be low, the heating power can be weakened, while suppressing burning, while cooking with low heat. Is easily performed, and it is easy to appropriately heat the object to be heated. Alternatively, when the burner is burned and used by the burner elevating means, the burner projects upward from the top plate, and when not in use, the burner is flush with the top plate or from the top plate. If the switch is set so that it will also retreat downwards, the burner does not protrude from the top when cleaning the top when not in use, so the burner does not get in the way and cleans. Easy to do. Therefore, it has become possible to provide a gas stove in which it is easy to appropriately heat an object to be heated or to clean the top plate when not in use.

[Invention of Claim 2] In the characterizing feature of Claim 2, the burner elevating means is configured to change and adjust the height of the burner with respect to the mounting support section. is there. According to the characteristic configuration of claim 2, the burner elevating means changes the amount of combustion of the burner according to the combustion amount of the burner.
It becomes possible to adjust the height of the burner so that it becomes higher as the combustion amount of the burner becomes smaller.In that case, even if the combustion amount is changed and the size of the flame is changed, It is possible to make the positional relationship between the heated object and the flame such that the tip of the internal flame part with a high temperature approaches the heated object, so that the heated object can be heated with good thermal efficiency. It becomes easier to properly heat the object. Also, it is possible to weaken the heating power by adjusting the height of the burner to a low value with the burner burned down to the minimum. Boiled cooking becomes easier, and it becomes easier to properly heat the object to be heated. Therefore, according to the characteristic configuration of the second aspect, it is possible to provide a preferable specific configuration particularly when obtaining the gas stove in which it is easy to appropriately heat the object to be heated.

[Invention of Claim 3] In the characterizing construction of Claim 3, the burner is arranged so as to project above the top plate and burns, and the burner elevating means is The burner is moved up and down so as to switch between a use state in which the burner projects above the top plate and a non-use state in which the burner is at the same height as the top plate or retracts below the top plate. It is composed of. According to the characteristic configuration of claim 3, the burner elevating means causes the burner to project above the top plate, and the burner is at the same height as the top plate or is not used below the top plate. You can switch to the state. In other words, when the burner is used for burning, the burner can be appropriately burned to heat the object to be heated by switching to a usage state in which the burner projects above the top plate, while the burner does not burn. Sometimes the burner does not protrude from the top plate by switching to a non-use state in which the burner is at the same height as the top plate or retracts below the top plate, so when cleaning the top plate, Does not get in the way and is easy to clean. Therefore, according to the characteristic structure of claim 3, it is possible to provide a preferable specific structure particularly when obtaining the gas stove in which the top plate can be easily cleaned when not in use.

[Invention of Claim 4] In the characterizing configuration of Claim 4, the burner elevating means is configured to make the burner level with the top plate in the non-use state. A burner insertion hole through which the burner is inserted is provided in the top plate, and a sealing material that seals between an outer peripheral portion of the burner located in the non-use state and an inner peripheral portion of the burner insertion hole is provided. There is something to do. According to the characteristic configuration of claim 4, when the burner is moved up and down by the burner elevating means while passing through the burner insertion hole of the top plate to switch between the used state and the non-used state, the non-used state is switched. , The burner is flush with the top plate. Then, in the non-use state, since a seal member seals between the outer peripheral portion of the burner and the inner peripheral portion of the burner insertion hole,
Liquid and dust are prevented from entering the lower side of the top plate through between the outer peripheral portion of the burner and the inner peripheral portion of the burner insertion hole.
For example, when cleaning the top plate, a liquid such as a cleaning liquid is prevented from entering between the outer peripheral portion of the burner and the inner peripheral portion of the burner insertion hole and entering the lower side of the top plate. Therefore, it is possible to provide a gas stove in which it is easy to clean the top plate when not in use, and moreover it is easy to prevent liquid, dust, etc. from entering the lower side of the top plate when not in use.

[Invention of Claim 5] In the characterizing structure of Claim 5, a use state detecting means for detecting whether or not the use state is present is provided, and a control means for controlling combustion of the burner is provided. When the use state detecting means detects a state other than the use state, the ignition operation for igniting the burner is prohibited. According to the fifth aspect of the present invention, the control means prohibits the ignition operation for igniting the burner when the usage state detecting means detects a state in which the usage state is not in use. That is, when the burner is not in use, for example, when the burner is at the same height as the top plate or is retired below the top plate and is inappropriate for igniting the burner, the user sets the burner Even if an ignition operation for igniting is performed, the burner does not burn because the ignition operation is prohibited by the control means. Incidentally, if the burner is ignited in a state where the burner is at the same height as the top plate or is retracted below the top plate, the top plate may be overheated. Therefore,
The inconvenience that the burner is ignited even though the position of the burner is not suitable for ignition, while making it easier to clean the top plate when not in use by adjusting the burner up and down. Can be prevented.

[Invention of Claim 6] In the characterizing configuration of Claim 6, the burner elevating means is provided with an actuator for raising and lowering, and the actuator is used to raise and lower the burner. A control means for controlling the operation of the actuator based on command information for switching between the use state and the non-use state is provided. According to the characteristic configuration of claim 6, when the control means is given command information for switching between the use state and the non-use state, the control means switches between the use state and the non-use state based on the command information. Control the operation of the actuator. By the way, as a structure for giving command information for switching to the use state and the non-use state to the control means, for example, a manually operated burner position changeover switch for switching between the use state and the non-use state is provided. The burner position changeover switch is used to give command information for switching between the use state and the non-use state. In addition, when a heated object presence / absence detecting means for detecting the presence / absence of the heated object above the burner is provided, and the heated object presence / absence detecting means detects a state existing from a state where the heated object does not exist, a non-use state Command information for switching from the use state to the use state, and when the heated object presence / absence detection unit detects a state in which the heated object exists and does not exist, the command information for switching from the used state to the non-used state is given. Thus, the control means is configured. Therefore, the operation for switching between the use state and the non-use state becomes unnecessary, and the usability can be further improved.

[Invention of Claim 7] In the characterizing configuration of Claim 7, combustion state detection means for detecting the combustion state in which the burner is burning is provided, and the control means is provided for the combustion state detection. When the means detects the combustion state, the control for switching from the use state to the non-use state is not executed.
According to the characteristic configuration of claim 7, when the combustion state detecting means detects the combustion state, the control means uses the command information for switching from the use state to the non-use state even if the instruction information is used. Do not execute the control to switch from the state to the unused state. That is, a manually operated burner position changeover switch for switching between the use state and the non-use state is provided, and the burner position changeover switch instructs the control means to switch between the use state and the non-use state. In the case where the burner is burned for heating and cooking is performed by mistake, even if the burner position changeover switch instructed to switch from the used state to the unused state by mistake, It cannot be switched to the use state. Therefore, it is possible to prevent the inconvenience of accidentally switching from the use state to the non-use state during cooking.

[Invention of Claim 8] In the characterizing structure of Claim 8, a plurality of the burners for switching between the use state and the non-use state are provided, and the burner elevating means is the plurality of burners. In order to switch each of the burners to the use state and the non-use state, the plurality of burners are individually moved up and down. According to the characteristic configuration of claim 8, in addition to being able to switch all of the plurality of burners to the use state and switching to the non-use state, any one of the plurality of burners is switched to the use state. Moreover, the rest can be switched to the unused state. Then, by switching any part of the plurality of burners to the use state and the remaining part to the non-use state, while performing heating and cooking using any of the plurality of burners, It is possible to prevent scattered matter such as broth from the heated object heated by the burner from being applied to the unused burner, and to prevent the unused burner from becoming dirty. Therefore, it is possible to prevent the unused burner from becoming dirty while performing heating and cooking using any burner of the plurality of burners, so that the usability can be further improved.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment Hereinafter, a first embodiment in which the present invention is applied to a built-in type gas stove will be described with reference to the drawings. As shown in FIGS. 1 and 2, the gas stove uses a rectangular tubular casing 1 to control three burners B for heating an object to be heated such as a pan N, one grill G, and various controls for the gas stove. The control unit 2 is installed, and the top plate 3 is provided so that the upper opening of the casing 1 is closed. Further, an object to be heated is placed on the top plate 3 in correspondence with each burner B. The Gotoku 4 to be placed is configured to be placed and supported in a removable state.
On the front surface of the casing 1, corresponding to each burner B,
A burner ignition switch 5 that sends command information for igniting and extinguishing the burner B to the control unit 2, a burner fire power adjustment switch 6 that sends command information for adjusting the combustion amount of the burner B to the control unit 2, and a burner for the grill G. A grill ignition switch 7 for sending command information for igniting and extinguishing (not shown) to the control unit 2, a grill fire power adjustment switch 8 for sending command information for adjusting the combustion amount of the burner of the grill G to the control unit 2, Also, an opening / closing door 9 for the grill G is provided.

In the present invention, the burner lifting means E for lifting and lowering the burner is provided. Also, burner B
Is configured to burn so as to project above the top plate 3, and the burner elevating means E is in a use state in which the burner B projects above the top plate 3 and the burner B is the top plate 3. The burner B is moved up and down so as to switch to the non-use state in which the height is the same.

The burner raising / lowering means E is provided with an actuator A for raising / lowering operation (see FIG. 6), and is configured to raise / lower the burner B by the actuator A. Corresponding to the burner B, there is provided a burner position changeover switch 10 for sending command information for switching between a use state and a non-use state to the control unit 2.
The control unit 2 is configured to control the operation of the actuator A so as to switch between the use state and the non-use state based on the command information from the burner position changeover switch 10.

The burner B will be described with reference to FIGS. 1 to 3. As the three burners B, a high thermal power burner B1 having the largest combustion amount, a standard burner B2 having a smaller combustion amount than the high thermal power burner B1, and a small thermal power burner B3 having the smallest combustion amount are provided. In the description, when it is necessary to distinguish the three burners B for description, they will be referred to as a high thermal power burner B1, a standard burner B2, and a small thermal power burner B3, respectively. By the way, the high-power burner B1 and the standard burner B2 are provided side by side in the left-right direction, and the low-power burner B3 is provided behind the high-power burner B1 and the standard burner B2 aligned in the left-right direction.

The structure of each burner B differs in size corresponding to the difference in the amount of combustion, but the structure is the same. Burner B
Is a burner body 12 provided with a plurality of flame holes 11 at an outer peripheral portion thereof at intervals, a mixing pipe 13 for supplying a mixed gas of gas fuel and air to the burner body 12, an ignition plug 14 for igniting the burner B, Further, the thermocouple 15 (corresponding to combustion state detecting means) for detecting whether or not the burner B is burning is integrally provided. That is, burner B
Is configured as an external flame type in which a flame is formed outward at the outer peripheral portion.

The burner main body 12 is configured such that an upper protruding portion 12h having a large-diameter portion located on the upper side and an upper surface having a flat inverted frustoconical shape is provided on the upper portion of the burner body 12.
Is provided below the upper protruding portion 12h. The mixing pipe 13 has a supply port 1 into which the tip of the gas nozzle 16 is inserted.
3i, when the gas fuel is jetted and supplied from the gas nozzle 16 to the supply port 13i, the combustion air is sucked into the supply port 13i as the gas fuel is jetted and supplied, and the gas fuel and the combustion air are separated from each other. It is configured to be mixed and supplied to the burner body 12. Supply port 13 of mixing tube 13
i is provided laterally, and the gas nozzle 16 fixedly provided as described later does not hit the upper part of the peripheral edge of the supply port 13i when the burner B is moved up and down by the burner elevating means E described later. Then, the notch 13s for letting the gas nozzle 16 escape is formed. Further, as shown in FIG. 4, the burner position detecting microswitch 28, which will be described later, is turned on and off on the side of the burner body 12 as the burner B is raised and lowered by the burner raising and lowering means E, which is described later. In addition, a protrusion 12t is provided.

The burner B constructed as described above
Is supported by a pair of lifting guides 17 so as to be lifted up and down, and is provided so that it can be lifted and lowered by a burner lifting means E described later. The pair of elevating guide portions 17 are arranged separately on both longitudinal ends of the mixing tube 13 of the burner B.
The explanation of the elevating guide portion 17 will be added.
A frame 29 for installing each member in a state of being supported by the casing 1 and the grill G is provided therein, and the elevating guide portion 17 is supported by the frame 29. The elevating guide portion 17 includes a guide cylinder 17b provided upright on the frame 29, and a rod-shaped guided body 17a that is attached downward to the bottom of the burner B and is slidably fitted in the guide cylinder 17b in the vertical direction. It consists of

As shown in FIG. 3, the gas nozzle 16 is fixedly provided at a fixed position using a frame 29,
A gas supply passage 18 for supplying a gas fuel such as city gas is connected to the gas nozzle 16, and an electromagnetic on-off valve 19 for connecting and disconnecting the gas supply to the burner B and a burner B are connected to the gas supply passage 18. Flow adjustment valve 20 for adjusting the amount of gas supplied to the
Is provided.

As shown in FIGS. 4 and 5, the burner B is
The gas nozzle 16 positioned at a fixed position is supplied to the supply port 1 through the notch 13s formed in the supply port 13i of the mixing pipe 13.
While being passed through the inside and outside of 3i, it is raised and lowered by the burner raising and lowering means E. The installation position of the gas nozzle 16 is such that when the burner B is raised to the highest position and switched to the use state, the tip of the gas nozzle 16 is the supply port 13 of the mixing pipe 13.
It is set to be located at the center of i. 4 shows a state in which the burner elevating means E has switched to a non-use state, and FIG. 5 shows a state in which the burner elevating means E has switched to a use state. In each of FIG. 4 and FIG.
(A) is a vertical cross-sectional side view of the main part of the gas stove, (b)
[Fig. 6] is a view on arrow (a).

The top plate 3 will be described with reference to FIGS. 1 to 3. The top plate 3 is provided with burner insertion holes 3h through which the burners B are inserted, corresponding to the installation positions of the burners B, and an annular recess 3d for positioning when the Gotoku 4 is placed. , On the back side of the top plate 3,
An exhaust port 3e for exhausting combustion exhaust gas from the grill G is provided. The inner peripheral surface of the burner insertion hole 3h is formed in a downward tapered shape having a smaller diameter toward the lower side so as to face the side peripheral surface of the upper protruding portion 12h of the burner B in a substantially parallel state. When the burner B descends on the tapered inner peripheral surface and the upper protruding portion 12 thereof enters the burner insertion hole 3h, the burner B comes into close contact with the side peripheral surface of the upper protruding portion 12 to form the burner insertion hole 3h. Inner surface and upper overhang 1
A sealing material 21 is provided to seal the space between the outer peripheral surface and the side surface.

By providing the inverted frustoconical upper projecting portion 12h on the upper portion of the burner B, it is possible to prevent dust and the like from falling into the casing 1 from the burner insertion hole 3h, and when the burner B descends. By sealing the space between the outer peripheral portion of the burner B and the inner peripheral portion of the burner insertion hole 3h of the top plate 3 with the sealing material 21, liquid such as boiling liquid spilled from the pot N or cleaning liquid for cleaning, It is designed to prevent the burner B and the top plate 3 from entering the casing 1 through the gap.

Referring to FIGS. 1 and 2, the Gotoku 4 will be described. The Gotoku 4 is placed on the ring-shaped support portion 4m.
The five claws 4n are configured to radially support the five claws 4n.
By inserting m into the recess 3d of the top plate 3, the top plate 3
It is possible to mount it in a state of being positioned at a predetermined position on the top. Then, when the Gotoku 4 is placed on the top plate 3, the claw portion 4n is configured to be higher than the burner B.

Next, the burner elevating means E will be described with reference to FIGS. 2, 3 and 6. The burner elevating means E is configured to elevate and lower the three burners B individually in order to switch the three burners B between the use state and the non-use state. Specifically, the burner lifting means E
Is configured such that each of the three burners B is provided with an elevating part Ep capable of elevating and lowering one burner B to switch between a use state and a non-use state. The elevating part Ep will be described. The elevating part Ep is of an electromagnetic type that moves the burner B up and down by using the magnetic force of the electromagnet 26. Specifically, the support shaft 22 erected on the frame 29, the disc-shaped guide body 23 attached to the upper end of the support shaft 22, and the support shaft 22 inserted in the hole 24h at the bottom are guided. A bottomed cylindrical guided tube 24 slidably fitted on the body 23 in the vertical direction, and a guided tube 24 and a guide body 23 between the bottom of the guided tube 24 and the guide body 23. A spring body 25 arranged to exert a biasing force in the direction of separating the magnets, an electromagnet 26 attached to the lower surface of the guide body 23, and a magnetic force of the electromagnet 26 attached to the upper surface of the bottom of the guided tube 24. Adsorbent 2 adsorbed by
7, and the upper end of the guided tube 24,
The burner B is attached in a mounted state.

Then, as shown in FIG. 6A, in the non-energized state where the electromagnet 26 is not energized, the attracting force does not act on the adsorbent 27 by the electromagnet 26, so the spring body 2
The burner B descends due to the urging force of the burner 5, and in the non-energized state, the burner B is at the same height as the top plate 3 and the upper surface of the burner B (the upper surface of the upper protruding portion 12h of the burner body 12).
Is configured to be flush with the top plate 3. Further, as shown in FIG. 6B, when the electromagnet 26 is energized, a suction force acts on the adsorbent 27 by the electromagnet 26 and resists the biasing force of the spring body 25. When the adsorbent 27 comes into contact with the burner B, the burner B rises, and in its energized state, the flame holes 11 of the burner B are positioned above the top plate 3 so that the burner B can be appropriately burned. It is configured so that it can be done. In other words, when the electromagnet 26 functions as the actuator A and the electromagnet 26 is not energized, the burner B descends to the same height as the top plate 3 and is switched to the non-use state so that the electromagnet 26 is energized. In this case, the burner B rises and projects above the top plate 3 so that the burner B can be switched to the use state.

In FIG. 1, the standard burner B2 and the small heat power burner B3 are switched to the non-use state, and the high heat power burner B1 is switched to the use state, and in FIG. The burner B2 is switched to the non-use state, and the high heat power burner B1 is switched to the use state. And in FIG. 1, it is shown corresponding to the standard burner B2 and the small fire power burner B3.
In the above, as shown in correspondence with the standard burner B2, when switched to the non-use state, the upper surface of the burner B becomes flush with the top plate portion 3, and the Gotoku 4 can be easily removed from the top plate 3. In such a state that the upper surface of the burner B is flush with the top plate 3 and the Gotoku 4 is removed from the top plate 3, for example, a pot N that is not a heating target is placed on the top plate 3,
Cooking work can be performed on the top plate 3, the top plate 3 can be used as a cooking table, and the top plate 3 can be easily cleaned. If the burner B that is used is switched to the used state and the burner B that is not used is switched to the unused state, the burner B that is not used becomes
It is possible to suppress scattering of scattered objects from the heated object heated by the burner B in use, and prevent the burner B not in use from becoming dirty.

Further, as shown in FIGS. 2 to 6, as the burner B is raised and lowered by the elevating part Ep corresponding to each burner B, the burner B is raised to the highest position, and the burner body 12 is A micro switch 28 for detecting the burner position is provided so that the burner B is brought into contact with the projection 12t to be turned on and turned off when the burner B is lowered from the highest position. In other words, when the burner B is raised to the highest position and is in a use state in which it projects above the top plate 3, the burner position detection micro switch 28 is turned on, and the use state can be detected, and the burner can be detected. When B descends from the highest position, the burner position detecting micro switch 28 is turned off to detect the non-use state, and the burner position detecting micro switch 28 functions as a use state detecting means for detecting whether or not the burner position is in the use state. It is configured to let.

Next, the control configuration of the controller 2 will be described with reference to FIG. The control unit 2 uses three burners B.
Since any of the above is configured to have the same control configuration, in the following description, the control configuration of the control unit 2 will be described.
A description will be given for one burner B. The control structure corresponding to the grill G is not directly related to the present invention and is well known, so that the description and illustration thereof will be omitted.

As shown in FIG. 7, the control unit 2 receives signals from the burner ignition switch 5, the burner thermal power adjustment switch 6, the burner position changeover switch 10, the thermocouple 15, and the burner position detecting microswitch 28, respectively. Spark plug 14, on-off valve 19, flow rate adjusting valve 20 and electromagnet 2
6 is configured to control the operation of each.

First, burner combustion control for controlling the combustion operation of the burner B will be described. When the ignition command is sent from the burner ignition switch 5, the control unit 2 opens the opening / closing valve 19 and opens the ignition plug 14 when the burner position detecting micro switch 28 detects the state of being in use. Ignition control (corresponding to ignition operation) for activating the burner B to perform ignition is executed, and ignition control is not executed when the burner position detection microswitch 28 detects a state that is not in use. Then, when the thermocouple 15 detects the combustion state in which the burner B is burning, the operation of the spark plug 14 is stopped to end the ignition control, and thereafter, the combustion monitoring control is executed. In the combustion monitoring control,
Based on the combustion amount instruction signal from the burner heat power adjustment switch 6, the operation of the flow rate adjusting valve 20 is controlled so that the combustion amount instructed by the combustion amount instruction signal is controlled, and the combustion amount of the burner B is adjusted. The combustion of the burner B is monitored based on the detection information of the thermocouple 15, and when the burner B goes out, the on-off valve 19 is closed. Then, during the execution of combustion monitoring control,
When the fire extinguishing command is sent from the burner ignition switch 5, the fire extinguishing control for closing the on-off valve 19 is executed.

Next, the burner position switching control for switching between the use state and the non-use state by the elevating part Ep will be described. The control unit 2 causes the burner position changeover switch 10 to
When the switching from the non-use state to the use state is instructed, the electromagnet 26 is energized and the burner raising control for raising the burner B is executed.

Further, by the burner position changeover switch 10,
When the switching from the use state to the non-use state is instructed, when the extinction of the burner B is detected by the thermocouple 15,
When power supply to the electromagnet 26 is stopped, burner lowering control for lowering the burner B to the lowest position is executed to switch to the non-use state, and when the thermocouple 15 detects combustion of the burner B, the burner B is burned. Do not execute the descent control. Therefore, while the burner B is burning, it is possible to prevent the inconvenience that the burner position changeover switch 10 erroneously commands the switching to the non-use state and the burner B is lowered so as to be in the non-use state. You can

The second and third embodiments of the present invention will be described below. In each of the embodiments, the same constituent elements as those of the first embodiment and constituent elements having the same operation will be described.
In order to avoid redundant description, the same reference numerals are used to omit the description, and mainly the configuration different from that of the first embodiment will be described.

[Second Embodiment] Hereinafter, based on the drawings,
A second embodiment will be described. In the second embodiment, the burner elevating means E is mainly of a cam type, and
The configuration is the same as that of the first embodiment except that the height of the burner B is adjusted to be different from that of the first embodiment, and the control configuration of the control unit 3 is different from that of the first embodiment. There is. As shown in FIG. 8, in the second embodiment, on the front surface portion of the casing 1, a low heat switch 30 for instructing the low heat combustion for adjusting the combustion amount of the burner B to the minimum combustion amount corresponding to each burner B. , And a low heat burner height adjustment switch 31 for adjusting the height of the burner B when low heat combustion is commanded by the low heat switch 30.

As shown in FIG. 9, the gas nozzle 16 is attached to the burner B with its tip inserted into the supply port 13i of the mixing tube 13 and is moved by the burner elevating means E.
The gas nozzle 16 is configured to move up and down together with the burner B. The gas supply passage 18 is provided with the gas nozzle 16
It is made of a flexible material so as to allow the vertical movement.

The cam type burner elevating means E will be described with reference to FIG. In addition, in FIG. 8, (a) shows a state in which the state is switched to the non-use state, (b) and (b ′) are switched to the use state, and (b ′)
Shows the state in which the burner B is switched to the use state in which the height of the burner B is higher than that in (b). As shown in FIG. 8, the burner elevating means E is configured to include three elevating sections Ep corresponding to the respective burners B as in the first embodiment, and the cam mechanism C constituting each elevating section Ep. Is a rotationally driven cam body 32 as a driving node and a rotating cam body 32.
And a contactor 33 as a follower that linearly moves in the vertical direction by contacting the outer peripheral surface of the electric motor 34, and an electric motor 34 for rotating the cam body 32 as an actuator A. The contour of the cam body 32 is such that, with the cam body 32 rotated to a predetermined rotation position, the burner B is lowered to the lowest position, and the upper surface of the burner B (the upper surface of the upper protruding portion 12h of the burner body 12) is a top plate. 3 is flush with 3 and switched to the non-use state, and at the rotational position within the predetermined range,
The burner B is set so that its flame hole 11 is located above the top plate 3 and protrudes above the top plate 3 to be kept in use.

Then, the contact 33 is attached downward to the bottom of the burner B, and the cam body 32 is driven by the electric motor 34.
The burner B is moved up and down to switch between the use state and the non-use state by rotating and driving the burner B, and by adjusting the rotational position of the cam body 32, the burner B in the use state.
It is configured to change and adjust the height of the.

Next, the control configuration of the control unit 2 will be described with reference to FIG. 11. In accordance with the adjustment of the combustion amount, the height of the burner B relative to the Gotoku 4 within the preset height adjustment range is set. Normal burner height adjustment control to adjust, and
The configuration is similar to that of the first embodiment, except that the low heat switch 30 is configured to execute the low burner height adjustment control for adjusting the height of the burner B when the low heat combustion is instructed. Therefore, the normal burner height adjustment control and the low heat burner height adjustment control will be described below.

Under the condition that the flame hole 11 is located above the top plate 3 and the burner B can be stably burned and the heating of the top plate 3 can be suppressed, the lower the combustion amount, the lower the combustion amount. In this state, the height of the burner B that can be heated with high thermal efficiency is set according to each combustion amount. Naturally, the height corresponding to the set maximum combustion amount becomes the minimum, the height corresponding to the set minimum combustion amount becomes the maximum, and the set height adjustment range is between them. Then, the rotational position of the electric motor 34 for positioning the burner B at the height corresponding to each combustion amount is set and stored in the control unit 2.

In the combustion monitoring control, the control unit 2 controls the operation of the flow rate adjusting valve 20 on the basis of the combustion amount instruction signal from the burner heat power adjusting switch 6, and in accordance with the combustion from the burner heat power adjusting switch 6. Based on the amount instruction signal, the operation of the electric motor 34 is controlled so as to stop the electric motor 34 at the rotational position corresponding to the combustion amount instruction signal, and the height of the burner B is adjusted. Execute control.

Further, when the low heat combustion is commanded by the low heat switch 30, the control unit 2 controls the flow rate adjusting valve 20 so as to adjust the combustion amount of the burner B to the set minimum combustion amount, and at the same time, controls the burner B. The electric motor 3 adjusts the height to a set low-fire height that is stored in correspondence with the set minimum combustion amount.
4 is controlled to execute the low heat combustion. Then, during execution of the low heat combustion, the electric motor is rotated in the normal direction and the reverse direction based on the rising command and the lowering command from the burner height adjusting switch 31 during the low heat to adjust the height of the burner B. Execute adjustment control. In this case, the height of the burner B can be adjusted to be lower than the set low heat height by the low heat burner height adjustment switch 31. However, the range in which the height of the burner B can be adjusted by the burner height adjustment switch 31 during low heat is configured to be limited to the above-mentioned set height adjustment range.

When the burner B is located within the set height adjustment range, the burner position detecting micro switch 28 is brought into contact with the burner position detecting micro switch 28 to turn on the burner position detecting micro switch 28. The vertical length of the protrusion 12t is set, and when the burner B is switched to the use state, the burner position detection micro switch 28 is turned on regardless of the height of the burner B, and the burner B is detected. When it is lowered below the height range in which the burner is in the used state, the burner position detecting microswitch 28 is turned off. That is, even if the height of the burner B in the used state is changed, the burner position detecting micro switch 28 can accurately detect whether or not the burner is in the used state. Regardless of this, the ignition control is executed, and the ignition control is not executed in the non-use state.

Therefore, the height of the burner B is automatically adjusted so that it becomes higher as the combustion amount increases so that the height of the burner B becomes an appropriate height at which the object to be heated can be heated with good heat efficiency. It Further, it is possible to weaken the heating power by adjusting the height of the burner B to be low in a state where the combustion amount of the burner B is minimized. In that case, while suppressing the burning, It becomes easier to cook stew over low heat.

[Third Embodiment] The third embodiment will be described below. As shown in FIG. 12, in the third embodiment, the burner elevating means E is mainly constituted by a manually operated push-push elevating mechanism P, and the burner position changeover switch 10 is omitted and the burner position thereof is omitted. The configuration is similar to that of the first embodiment, except that the burner position switching control of the control unit 3 based on the command from the changeover switch 10 is omitted. In addition, in FIG.
(A) shows the state of being switched to the non-use state,
(B) shows a state in which it is switched to the use state.

Description of the push-push lifting mechanism P will be added. Since the push-push lifting mechanism P is well known, detailed description thereof will be omitted. Basically, however, the burner B is pushed downward from the highest position corresponding to the switched state to the lowest position. Then, when the pressing force is released, it is located between the highest position and the lowest position, returns to the intermediate position corresponding to the state switched to the non-use state, and is locked at the intermediate position. When the burner B, which is locked to, is pressed downward, the locked state at the intermediate position is released, and the burner B is moved up and down by returning to the highest position corresponding to the usage state. Is configured.

In addition, in the push-push lifting mechanism P, the push operation rod 41 is attached to the fixed frame 40 and the spring body 4 is inserted.
The groove position corresponding to the state in which the burner B is located at the highest position on one of the fixed frame 40 and the push operation rod 41 is provided so as to be slidable in the vertical direction in the state of being urged to return upward at 2. From the groove position corresponding to the state where the burner B is located at the lowest position, the groove position corresponding to the state where the burner B is located at the intermediate position, and the groove position corresponding to the release position where the engagement is released. Then, a guide body 43 having a guide groove 43g that returns to the groove position corresponding to the state where the burner B is located at the highest position is provided, and an engaging element 44 that is engaged with the guide groove 43g is provided on the other side. There is.

Then, the fixed frame 40 is mounted on the frame 29, the burner B is mounted on the upper end of the push rod 41 in a mounted state, and the operation of pushing the burner B downward is performed in sequence. The burner B is elevated to the highest position and protrudes above the top plate 3, and the burner B is located at an intermediate position and is in the same height as the top plate 3. It is configured as follows.

Burner position detection micro switch 28
When the burner B is at the highest position, the burner body 12
When the burner B descends from the highest position by detecting the state in which the protrusion 12t of the burner abuts on and is in the on state, the protrusion 12t of the burner body 12 is released from the abutment or the abutment. It is provided so that the state of being used cannot be detected. Then, as in the first embodiment, when the ignition command is sent from the burner ignition switch 5, the control unit 2 opens and closes the open / close valve when the burner position detecting micro switch 28 detects the in-use state. 21 is opened and the ignition plug 17 is operated to execute the ignition control for igniting the burner B. When the burner position detecting micro switch 28 does not detect the in-use state, the ignition control is executed. It is configured not to. or,
Similar to the first embodiment, the control unit 2 is configured to execute the combustion monitoring control and the fire extinguishing control.

Another Embodiment Next, another embodiment will be described. (A) In the case where a plurality of burners B are provided, the above embodiment has exemplified the case where the burner elevating means E is configured to switch between the use state and the non-use state for all of the plurality of burners B. A part (a plurality or one) of the plurality of burners B may be configured to be switched between a use state and a non-use state. For example, when three burners B are provided as in the above embodiment, the standard burner B2 and the small fire power burner B3 can be configured to be switched between the used state and the unused state.

(B) In the case where a plurality of burners B that can be switched between the use state and the non-use state are provided, in the above-described embodiment, the burner elevating means E is used and the plurality of burners B are separately used and not used. Although the case where the plurality of burners B are collectively lifted and lowered, the plurality of burners B may be collectively switched between the use state and the non-use state has been described above. .

(C) When the ignition command is sent from the burner ignition switch 5, command information for switching from the non-used state to the used state is given, and when the extinguishing command is sent from the burner ignition switch 5, the non-used state is turned off. If it is configured to give command information for switching to the use state,
By performing ignition operation with the burner ignition switch 5,
The burner B automatically rises and switches to the use state, and by extinguishing the fire with the burner ignition switch 5, the burner B automatically descends and switches to the non-use state, further improving operability. To do.

Further, if a heated object presence / absence detecting means for detecting the presence / absence of the heated object above the burner B is provided, and if the heated object presence / absence detecting means detects the existing state from the absence of the heated object, Command information for switching from the non-use state to the use state is given, and the command for switching from the use state to the non-use state is given when the heated object presence / absence detecting means detects a state in which the heated object exists and does not exist. If it is configured to give information, the burner B automatically rises and switches to the use state by placing the object to be heated on the Gotoku 4, and the object to be heated is lowered from the Gotoku 4 automatically. Since the burner B descends and switches to the non-use state, the operability is further improved.

(D) The structure of the burner elevating / lowering means E is not limited to the structure illustrated in each of the above embodiments. For example, a rack is attached to the burner B side, a pinion that engages with the rack is hung on the frame 29 side, and the pinion is rotated normally and reversely, so that the burner B is moved up and down to switch between the used state and the unused state. It may be configured to. In that case, an electric motor may be provided as an actuator for rotationally driving the pinion, or the pinion may be manually rotated. When the burner elevating means E is constructed by the rack and pinion mechanism as described above, the height of the burner B with respect to the Gotoku 4 can be changed and adjusted. Alternatively, it may be configured to be lifted and lowered by a hydraulic or pneumatic cylinder.

(E) When the burner elevating means E is configured to change and adjust the height of the burner B with respect to the Gotoku 4, the control unit 2 is instructed to control information for changing and adjusting the height of the burner B. A manually operated height setting unit may be provided. In this case, since the height setting unit can arbitrarily adjust the height of the burner B in the use state, the usability can be further improved.

(F) In each of the above-described embodiments, the burner B is configured to have the same height as the top plate 3 in the non-use state, but in the non-use state, the burner B is higher than the top plate 3. May also be configured to retire downward.

(G) There may be a case where the burner B is provided with a temperature sensor for detecting the temperature of the bottom of the pan by coming into contact with the bottom of the pan N while protruding above the burner B. In that case,
The burner elevating means E is configured to raise and lower the temperature sensor integrally with the burner B, and the temperature sensor is configured to be located at the same height as the top plate 3 in a state where the temperature sensor is switched to the non-use state.

(H) In the above embodiment, the case where the burner B is of the external flame type has been illustrated, but the burner B is of the internal flame type in which the flame holes that form the flame inward are annularly provided. It may be configured. In the case of the internal-flame burner B, the burner B can be provided so as to be at the same height as the top plate 3 or to be retreated below the top plate 3 for combustion, so in this case The burner elevating means E is configured to change and adjust the height of the burner B with respect to Gokutoku 4,
The height of the burner B can be changed and adjusted according to the combustion amount of the burner B. Further, the burner B is provided so as to retreat below the top plate 3 so that the space below the top plate 3 is used as a combustion chamber for combustion, and an exhaust fan for exhausting combustion exhaust gas in the combustion chamber is provided. If the top plate 3 is used as the mounting portion, the burner lifting means E
Is configured to change and adjust the height of the burner B with respect to the top plate 3 as a mounting portion, and to change and adjust the height of the burner B according to the combustion amount of the burner B. To do.

(I) In the above embodiment, the controller 2 is configured to execute the ignition control and the extinction control based on the command from the burner ignition switch 5, so that the burner B is automatically ignited and extinguished. Although a case has been described as an example where the burner B is ignited and extinguished manually, the burner B may be manually ignited and extinguished. When manually igniting and extinguishing the burner B, for example, an instrument plug configured as follows is provided. That is, the instrument plug, when the button at the starting end position is pushed all the way in,
When the on / off valve for connecting and disconnecting the gas fuel is opened and the ignition plug is operated to perform the ignition operation and the pushing force is released, the button is held at the intermediate position for maintaining the open / closed valve state, and the intermediate position When the button in the position is pushed in, the button returns to the starting end position, the on-off valve is closed, and the fire extinguishing operation is performed.

(G) The gas stove to which the present invention can be applied is not limited to the built-in type gas stove as exemplified in the above embodiment,
For example, it can be applied to a gas stove installed in a form of being placed on a stove stand. In addition to the so-called three-port gas stove equipped with three burners B as in the above-described embodiment, a so-called two-port gas stove equipped with two burners B and a so-called one-port gas stove equipped with one burner B. etc,
It can be applied to various gas stoves.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall schematic configuration of a gas stove according to a first embodiment.

FIG. 2 is a vertical cross-sectional front view of the gas stove according to the first embodiment.

FIG. 3 is a vertical sectional side view of a main part of the gas stove according to each of the first embodiments.

FIG. 4 is a diagram for explaining lifting and lowering of a burner in the gas stove according to the first embodiment.

FIG. 5 is a view for explaining lifting and lowering of a burner in the gas stove according to the first embodiment.

FIG. 6 is a vertical cross-sectional view showing a burner elevating means of the gas stove according to the first embodiment.

FIG. 7 is a block diagram showing a control configuration of the gas stove according to the first embodiment.

FIG. 8 is a vertical sectional front view of the gas stove according to the second embodiment.

FIG. 9 is a vertical sectional side view of the gas stove according to the second embodiment.

FIG. 10 is a side view showing the burner lifting means of the gas stove according to the second embodiment.

FIG. 11 is a block diagram showing a control configuration of a gas stove according to a second embodiment.

FIG. 12 is a vertical cross-sectional view showing a burner elevating means of a gas stove according to a third embodiment.

[Explanation of symbols]

2 control means 3 Top plate 3h burner insertion hole 4 Placement support 15 Combustion state detection means 21 Seal material 28 Usage condition detecting means A actuator E Burner lifting means B burner

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hikuji Muranaka             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd. (72) Inventor Shinichi Hagiwara             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd. (72) Inventor Kazuko Kuwahara             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd. (72) Inventor Naho Ueda             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd.

Claims (8)

[Claims] 1. A gas stove provided with a burner for heating an object to be heated which is placed and supported by a placing support part, the gas stove provided with a burner elevating means for raising and lowering the burner. 2. The gas stove according to claim 1, wherein the burner elevating means is configured to change and adjust the height of the burner with respect to the placement support portion. 3. The burner is arranged so as to project above a top plate and burns, and the burner elevating means is in a use state in which the burner projects above the top plate, and the burner. 3. The gas stove according to claim 1 or 2, wherein the burner is moved up and down so as to switch to a non-use state in which is at the same height as the top plate or is retracted below the top plate. 4. The burner elevating means is configured to have the burner at the same height as the top plate in the non-use state, and the top plate is provided with a burner insertion hole through which the burner is inserted. The gas stove according to claim 3, further comprising a seal member that seals between an outer peripheral portion of the burner located in the non-use state and an inner peripheral portion of the burner insertion hole. 5. A use state detecting means for detecting whether or not the use state is present is provided, and a control means for controlling combustion of the burner detects a state in which the use state detecting means is not the use state. The gas stove according to claim 3 or 4, wherein the ignition operation for igniting the burner is prohibited when the gas stove is in operation. 6. The burner raising / lowering means is provided with an actuator for raising / lowering operation, and is configured to raise / lower the burner by the actuator, based on command information for switching between the use state and the non-use state. The gas stove according to any one of claims 3 to 5, further comprising control means for controlling the operation of the actuator. 7. A combustion state detecting means for detecting a combustion state in which the burner is burning is provided, and the control means, when the combustion state detecting means detects the combustion state, the operating state. 7. The gas stove according to claim 6, wherein the gas stove is configured so as not to execute control for switching from the above to the non-use state. 8. A plurality of the burners are provided for switching between the use state and the non-use state, and the burner elevating means switches the plurality of burners between the use state and the non-use state, respectively. The gas stove according to any one of claims 3 to 7, which is configured to raise and lower the plurality of burners separately.