JP2009085587A - Stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an innovative cooking stove having excellent cleanability and appearance while maintaining thermal efficiency. <P>SOLUTION: This cooking stove 100 includes burners 22 formed on a top plate 8 and having flame holes 2, 3 forming flames 10, 11, and heats a heating object 12 by the flames 10, 11 formed by the flame holes 2, 3 on the burners 22. The burners 22 are composed of a plurality of burner members 1 having supporting parts 21 provided on the top part thereof and supporting the object 2 to be heated, a plurality of flame holes 2, 3 opened in the side parts thereof, and gas mixture supply passages 23 provided inside thereof and introducing to the flame holes a gas mixture supplied from a bottom side or one end side and subjected to overall primary combustion. The burner members 1 are circumferentially arranged on a layout reference circle A on the top plate 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a stove that includes a burner member having a flame opening for forming a flame on a top plate, and that heats an object to be heated by the flame formed by the flame opening at an upper portion of the burner member.

Most conventional stoves are arranged on a top plate so that a flame is formed and a circular burner member that heats an object to be heated, such as a pan, by the flame and radially spreads around the burner. And a support portion such as a virtues that support the heated object to be heated.
In the above-described stove, the upper surface of the burner member is provided with an inclined portion that is inclined from the center position side to the outer peripheral side, the inclined portion is configured to have an uneven shape radially from the center position, and the protrusion is provided with a flame port. It is known what has been configured. By configuring in this way, when boiled broth or the like is dripped onto the upper surface of the burner member, the boiled broth or the like is made to flow on the stove by flowing the boiled broth or the like from the center position side of the burner member along the recess on the upper surface of the burner member What reduces the possibility of flowing into the interior is known (see Patent Document 1).
Further, in the above-described stove, a plurality of burner members that are provided with an auxiliary burner at the center position of the stove, and are arranged so as to extend radially from the auxiliary burner, have a convex support portion that supports the heating object on the upper surface thereof. And having a flame opening opened in the circumferential direction on the side surface of the burner member is known. Thereby, the burner member which has a support part forms the flame which provided the turning force while having the function of five virtues. (See Patent Document 2).

JP 2007-139312 A JP-A-5-33912

In the stove according to Patent Document 1, when the broth or the like spills into the flame outlet formed on the upper convex portion of the burner member, the broth or the like may flow from the flame mouth into the stove. Moreover, since the upper surface of the burner has a complicated uneven shape, there is a problem that aesthetics and cleanability are poor.
In the stove according to Patent Document 2, when the broth spills, the broth or the like may flow into the stove from the secondary air opening of the auxiliary burner provided at the central position of the stove. Moreover, on the top plate, in addition to the burner member, a complicated burner provided with an auxiliary burner is provided, which may impair the aesthetics and has a problem of poor cleanability.

  This invention is made | formed in view of said subject, The objective is to provide the novel stove excellent in cleaning property and aesthetics, maintaining thermal efficiency.

In order to achieve the above object, the stove according to the present invention includes a burner having a flame mouth that forms a flame on a top plate, and is heated by the flame formed by the flame mouth at an upper portion of the burner. A stove for heating an object,
The top portion has a support portion that supports the heating object, the plurality of flame openings that open to the abdomen, and an all-combustible air-fuel mixture supplied from the bottom side or one end side to the inside. A plurality of burner members having an air-fuel mixture supply path leading to the flame outlet constitute the burner,
Each of the burner members is arranged around the arrangement reference circle on the top plate.
Here, the air-fuel mixture capable of primary combustion is completely mixed using a premixed air-fuel mixture that is not supplied with secondary air from a special secondary air port around the burner or a part of the secondary air from around the burner. The air-fuel mixture has a combustible primary air ratio. In addition, the burner according to the present invention is basically combustible with an air-fuel mixture (secondary air is at most 40%) ejected from the flame outlet.

According to the above characteristic configuration, the top surface of the top plate is simply arranged around the arrangement reference circle by configuring the burner with a plurality of burner members having a function of a support portion for supporting the heating object. Therefore, the stove has a simple configuration. Thereby, when boiled juice etc. are spilled, since it can wipe easily, cleaning property can be improved. Moreover, since it comprises without providing the opening for secondary air etc. with which the conventional stove was equipped, when boiling water etc. are spilled, boiling water etc. can be prevented from flowing into the inside of a stove.
Moreover, since the some burner member has the structure arrange | positioned around the arrangement | positioning reference | standard circle | round | yen, since heating objects, such as a pan, can be mounted with sufficient balance, aesthetics improve. Furthermore, since the plurality of burner members described above have a plurality of flame openings that open in the abdomen, the object to be heated can be heated well from below, so that the thermal efficiency is improved compared to the conventional burner of the stove. Can be maintained.
In addition, since the plurality of flame openings opened in the abdomen of the plurality of burner members are configured so that an air-fuel mixture capable of primary combustion is introduced, the mixture injected from the flame openings is excellent. A flame can be formed.
From the above, it is possible to realize a novel stove excellent in cleanability and aesthetics while maintaining thermal efficiency.

Further features of the stove according to the present invention, in addition to the features described above,
The respective burner members in the burner are arranged at equal intervals,
At least one of the flame outlets of each of the burner members is configured as a flame-transfer flame outlet that forms a flame that transfers to the flame mouth of the adjacent burner member.

In general, when the burner member is divided and disposed, an igniter (ignition plug, etc.) and a flame detector (thermocouple, frame rod, ultraviolet photoelectric tube, etc.) are required for each burner member, and this increases the cost. Therefore, a complicated wiring process is required and the manufacturing process is greatly increased.
According to the above characteristic configuration, in each of the burner members arranged at equal intervals with respect to the arrangement reference circle, at least one of the flame outlets of the burner member is disposed with respect to the flame outlets of other adjacent burner members. By setting it as the flame transfer flame mouth which forms the flame which transfers a fire, the flame which a burner member forms can be moved to the flame opening of the other adjacent burner member (fire transfer).
A more specific feature configuration of the above-described feature configuration is that the opening direction of the flame transfer flame opening is directed to the flame opening provided in the adjacent burner member, and the flame formed by the flame transfer flame opening is: It is constituted so that it may contact with a flame mouth of the above-mentioned adjacent burner member arranged at equal intervals. Thereby, the fire transfer between the burner members can be performed more reliably, and by igniting one burner member, the flame ports of all the burner members can be reliably ignited.
Furthermore, according to the above characteristic configuration, if the igniter is configured to ignite one burner member, all the burner members can be sequentially ignited in a relay manner. Furthermore, if the flame detector is configured to detect the ignition of the end burner member of the fire transfer relay, it can be determined that all the burner members have been ignited by detecting the ignition of the end burner member.
In addition, in order to raise | generate such a fire transfer, since it becomes necessary to maintain the distance of the flame mouth for the purpose of a fire transfer appropriately, the space | interval of a burner will be regulated naturally.

Further features of the stove according to the present invention, in addition to the features described above,
The shape of the support portion of the burner member is an upwardly convex curved shape,
The height of the support part of the burner member is configured to gradually decrease as it approaches the center position of the arrangement reference circle.

According to the above characteristic configuration, since the shape of the support portion of the burner member is an upwardly convex curved shape, the sitting of the heating object placed on the supporting portion is improved, and the heating object is stabilized. Can be supported. Moreover, since the area which transmits heat becomes large in the lower surface of a heating target object, thermal efficiency can be improved.
Further, by configuring the burner member support portion so that the height of the support portion gradually decreases as it approaches the center position of the arrangement reference circle, from a heating object having a small bottom area to a heating object having a wide bottom area. It can be placed satisfactorily and the stability of the heated object to be placed can be improved regardless of the size.
The shape of the burner member can be any shape as long as it can have a support portion that supports the object to be heated and a flame outlet that injects an air-fuel mixture capable of primary combustion.

Further features of the stove according to the present invention, in addition to the features described above,
A primary air ratio of the air-fuel mixture is in a range of 0.6 to 1.5;
When the stove combustion amount is reduced with respect to the flame mouth, the air-fuel mixture is intermittently supplied, and supply duty ratio adjusting means capable of adjusting the supply duty ratio of the air-fuel mixture is provided. And

According to the above characteristic configuration, by setting the primary air ratio of the air-fuel mixture to 0.6 or more and 1.5 or less, it is possible to supply the air-fuel mixture capable of substantially all primary combustion to the flame outlet. Thereby, all primary combustion can be performed, without providing the opening for secondary air provided in the top plate of the conventional stove.
Note that the lower limit value of the primary air ratio of the air-fuel mixture described above requires a stoichiometric ratio of about 0.6 in order to perform good combustion. On the other hand, the upper limit value of the primary air ratio of the air-fuel mixture needs to be suppressed to about 1.5 due to lifting restrictions.
Further, according to the above characteristic configuration, the supply duty ratio adjusting means intermittently supplies the air-fuel mixture when using the stove with a reduced amount of combustion of the stove, and the supply duty ratio of the air-fuel mixture Therefore, it is possible to realize heating with a small amount of heat (small fire) as compared with a stove that does not include a supply duty ratio adjusting means.
That is, the supply duty ratio adjustment means periodically opens and closes an on-off valve or the like provided in the through pipe that supplies the air-fuel mixture, and allows the duty ratio as an open time ratio to be changed, thereby supplying the flame mouth. The amount of the air-fuel mixture that is produced can be adjusted to a value that is less than the amount that can be adjusted by the restriction.
From the above, a stove with improved actual usability (cooking ability) can be realized.

  A further characteristic configuration of the stove according to the present invention is characterized in that, in addition to the above-described characteristic configuration, a temperature sensor for detecting the temperature of the heating object is provided at the center position of the arrangement reference circle.

According to the above characteristic configuration, by providing a temperature sensor that detects the temperature of the object to be heated, for example, with a safety function that can prevent fire due to overheating of tempura oil or the like, or scorching of the object to be heated such as a pan It is possible to provide an automatic cooking function capable of automatically detecting that boiling broth and the like are boiling and digesting the flame.
Furthermore, by arranging the temperature sensor at the center position of the arrangement reference circle, it is possible to improve aesthetics, and it is possible to suppress the detection error caused by the temperature sensor being heated by the flame.
In addition, the temperature sensor does not need to be provided with an opening such as a secondary combustion opening. If the space between the temperature sensor and the top plate is sealed, there is no risk that the broth or the like will flow into the stove. Can be improved.

The opening direction of the flame opening of the burner member is preferably the circumferential direction in order to prevent the temperature sensor from being exposed to the flame and causing a detection error. In addition, when a flame outlet for fire transfer is provided toward the temperature sensor, the temperature sensor is not exposed to the flame by appropriately setting the size of the flame formed by the flame outlet and the vertical direction. it can.
As the temperature sensor, in addition to the thermistor, a contact type sensor such as a thermocouple or a non-contact light detection method such as infrared detection can be used. Furthermore, cooling air for cooling can be circulated around the temperature sensor. The air can be used as air for secondary combustion of the air-fuel mixture.

  The stove according to the present invention is further characterized in that, in addition to the above-described feature configuration, in the burner, a distributor that distributes and supplies the air-fuel mixture to each burner is provided on the top plate of the arrangement reference circle. It is provided in the center position.

According to the above characteristic configuration, by providing the distributor for supplying the air-fuel mixture to the plurality of burner members at the center position of the arrangement reference circle, the air-fuel mixture is connected to each burner via the piping arranged radially from the distributor. The member can be supplied. Thereby, it is not necessary to provide a distributor for each of the plurality of burner members, and a relatively wide space can be secured under the top plate. For example, an effect can be obtained in which a large space in the cabinet of the attached grill of the stove can be obtained. .
In addition, if the distributor and the pipe are arranged on the top plate, the air-fuel mixture can be separated from the bottom of the top plate through a through pipe that is connected to the distributor by providing one through hole below the distributor. It is supplied to each burner member arranged on the plate. That is, since the through-hole which penetrates a top plate can be made into one, a manufacturing process can be reduced and cost can be reduced. Moreover, by making the through-hole which penetrates a top plate into one, a seal with a through-tube and a through-hole becomes easy, and it can suppress that boiled juice etc. flow in into a stove.
It should be noted that the number of mixers forming the air-fuel mixture can be single corresponding to the number of single distributors.
Further, since it is possible to provide a temperature sensor at the center position of the distributor, there are two inventions: an invention in which the distributor is provided at the center position of the arrangement reference circle and an invention in which the temperature sensor is provided at the center position of the arrangement reference circle. There is no choice. In addition, the wiring of the igniter and the flame detector can be led under the top plate through the above-described through holes.

Further features of the stove according to the present invention, in addition to the features described above,
In the burner, a distributor for distributing and supplying the air-fuel mixture to each of the burners is provided under the top plate,
The distributor is connected to a through pipe that passes through the top plate and is connected to each burner member.

According to the characteristic configuration described above, the distributor is disposed under the top plate, and the air-fuel mixture is supplied from the distributor to each burner member through the through pipe. Not exposed. For this reason, since the top plate can be a simple stove, aesthetics and cleanability can be improved. In this case, it is desirable that the pressure loss of the pipe connecting the distributor and each burner member is substantially the same.
In the present invention, the air-fuel mixture is supplied to each burner member via through pipes that pass through through holes formed in the top plate. In this case, it is desirable to provide one mixer (hereinafter referred to as a venturi mixer) for the stove as described above, but it is also possible to provide a plurality of venturi mixers for each individual burner member.
Further, a free-form distributor can be provided under the top plate, and the air-fuel mixture can be distributed and supplied from the distributor to each burner member.

Further features of the stove according to the present invention, in addition to the features described above,
In the burner, comprising a ring-shaped hollow member through which the air-fuel mixture flows,
The hollow member is provided so as to be connected to each of the burner members.

According to the said characteristic structure, the mutual position of each burner member can be fixed because the hollow member in which air-fuel mixture distribute | circulates is connected and fixed with a some burner member. Thereby, since a hollow member and each burner member can be easily removed as one body, cleaning property improves. In addition, since the hollow member and the plurality of burner members are integrated, attachment is also relatively easy.
In addition, by connecting a mixer such as a venturi mixer that supplies air-fuel mixture to a hollow member disposed on the top plate from the vicinity of the grill exhaust port at the rear of the stove, without providing a through hole in the top plate, An air-fuel mixture can be supplied to each burner member. Thereby, it can prevent that broth etc. flow into the inside of a stove, and can improve cleaning property.

Further, as a specific configuration, the burner is disposed on the top plate so that the venturi mixer can suck the fuel gas from the fuel nozzle provided in the vicinity of the exhaust port on the rear side of the grill. Is configured to be connected and fixed to the Venturi mixer and to be fixed to each burner member. Thereby, a venturi mixer, a hollow member, and a burner member can be removed from a top plate without a tool as an integrated burner, and cleaning property improves. That is, in this configuration, when the integrated burner is removed from the top plate, there is nothing on the top plate that obstructs the cleaning of the through-holes, the burner, etc. Become.
As described above, the reason why the fuel nozzle and the venturi mixer can be separated is a space for taking in air between the fuel nozzle and the venturi mixer. This is because it is not necessary to provide a seal for preventing fuel gas leakage.
The temperature sensor, the igniter, and the flame detector are attached to a set of integrated burners as necessary, and are connected by wiring near the fuel nozzle.

  In the burner according to the present invention, in addition to the above-described characteristic configuration, the burner is configured such that the plurality of burner members are integrated and deviated from the center position or the center position of the arrangement reference circle. The air-fuel mixture supply port provided at the position is configured to be rotatable in the circumferential direction with a fulcrum as a fulcrum.

According to the above characteristic configuration, since the plurality of burner members are integrated, the burner according to the present invention can be configured as an integrated body including a plurality of burner members. Thereby, a burner can be made into a simple structure.
Also, the burner can be easily rotated in the circumferential direction with a plurality of burner members as an integral body, with the air-fuel mixture supply port as a fulcrum. As a result, when the broth or the like spills and accumulates between the plurality of burner members and the top plate, and exposes the surface between the plurality of burner members and the top plate for cleaning, the plurality of burner members are rotated together. Thereby, the surface between a some burner member and a top plate can be exposed easily. And the surface between several burner members and a top plate which boiled juice etc. accumulate | store and is comparatively difficult to clean can be easily cleaned.
Furthermore, the surface between the burner and the top plate is relatively easy by configuring the burner to rotate with respect to the top plate with the supply port as a fulcrum instead of completely removing the burner and the top plate. Therefore, the cleanability of the lower surface of the burner and the upper surface of the top plate can be improved.
Moreover, when the said burner is provided with two or more on the top plate, the distance between each burner can be adjusted by rotating each burner by using the said supply port as a fulcrum. Thereby, since the distance of several burners with which the top plate was equipped can be taken large, a several pot with a large diameter can be mounted in a burner with the form which pots do not contact. Furthermore, when a plurality of small pans are placed on each burner, each burner can be placed at the center of the top plate, so that the exhaust gas collection rate by the range hood provided at the top of the burner can be improved. .

  The stove according to the present invention is further characterized in that, in addition to the above-described feature configuration, the air-fuel mixture includes atmospheric pressure air or air pressurized by a fan, and fuel gas having a pressure higher than that of the air. It is produced by mixing with a venturi mixer.

According to the above characteristic configuration, since the Venturi mixer is used as a mixer for generating the air-fuel mixture, the conventional Bunsen combustion can be performed almost without the complicated air-fuel ratio control required for general premixed combustion. With the same configuration, an air-fuel mixture having a required air ratio can be obtained. This is because by appropriately designing the Venturi mixer, it is possible to obtain an air-fuel mixture by drawing air in excess of the theoretical air amount into the low-pressure fuel gas.
Furthermore, by using a fan or the like in combination, air with a relatively low pressure (for example, a pressure of about several tens of Pa) is sent to the venturi mixer, so that a mixture with a large air ratio can be generated even with a small venturi mixer. . As the above-described fan, an axial fan used for cooling an electric device or the like can be used.
As a result, it is possible to obtain an air-fuel mixture having a required air ratio with substantially the same configuration as that of the conventional Bunsen combustion, without performing the complicated air-fuel ratio control required in general premixed combustion.

  A further characteristic configuration of the stove according to the present invention is characterized in that, in addition to the above-described characteristic configuration, each of the burner members is arranged with its major axis directed in the radial direction of the arrangement reference circle.

  According to the above characteristic configuration, when the burner member has a long axis, by directing the long axis in the radial direction of the arrangement reference circle, the opening direction of the flame port of the abdomen of the burner member is the circumferential direction of the arrangement reference circle. It can be configured to be suitable for. As a result, the flame formed at the flame opening is formed in a form that swirls with respect to the circumferential direction of the arrangement reference circle, so that the flame can heat a wide area at the bottom of the object to be heated. Thermal efficiency can be maintained as compared with conventional burners.

  According to a further characteristic configuration of the stove according to the present invention, in addition to the above-described characteristic configuration, each of the burner members is arranged with its major axis rotated by a declination with respect to the radial direction of the arrangement reference circle. Or arranged with a certain deviation in parallel with respect to the tangential direction of the arrangement reference circle.

  According to the above characteristic configuration, each burner member is arranged with its major axis rotated by a certain declination with respect to the radial direction of the arrangement reference circle, or its major axis is tangent to the arrangement reference circle. By being moved in parallel by a certain deviation with respect to the direction, an aesthetics different from the stove described so far can be obtained. In addition, the opening direction of the flame mouth approaches the direction toward the center of the arrangement reference circle, and the flame formed at the flame mouth can heat a wide area at the bottom of the object to be heated. Thus, thermal efficiency can be maintained.

  A further characteristic configuration of the stove according to the present invention is that the flame port of the burner member is opened toward the end side of the burner member in the arrangement direction of the plurality of flame ports.

For example, in a burner member having a rectangular or oval cross section, a plurality of flame openings are arranged along the long axis direction of the burner member. By opening toward the end side of the member, the air-fuel mixture can be ejected to the outside of the burner member from the flame port located at the end portion in the arrangement direction of the plurality of flame ports. Thereby, a flame can be formed in the range wider than a burner member. Therefore, even if the flame mouth forming part that forms the flame mouth is reduced, the same flame spread as before the reduction can be obtained, so the dimension (length) in the major axis direction of the burner member can be reduced. The amount of material can be reduced, leading to cost reduction. Here, in order to give directionality to the air-fuel mixture ejected from the flame mouth, the thickness (depth) of the flame mouth is set to about three times or more the flame diameter.
Furthermore, by opening the flame opening toward the end portion side of the burner member, which is the direction in which the plurality of flame openings are arranged, it is easy to take in secondary air at the flame opening, and the combustibility can be improved. .
Moreover, the temperature distribution of the bottom face at the time of heating a pan can be made appropriate by appropriately setting the direction in which each flame opening opens.
Further, when the burner member is arranged so that the major axis direction of the burner member is the radial direction of the arrangement reference circle, the flame port located on the innermost side in the radial direction of the arrangement reference circle is the radial direction of the arrangement reference circle. By opening inward, the innermost flame port can be used as a flame transfer flame port.

  The stove according to the present invention is further characterized in that the burner member is formed by casting a metal.

  According to the above characteristic configuration, the number of burner members will increase compared to the conventional one, but by manufacturing the burner members by casting, forging, etc., it will be suitable for mass production, and it can obtain the merit of cost reduction it can. The casting method differs depending on the metal forming the burner member. When the burner member is made of (cast) iron, sand mold casting is preferred. When it is made of stainless steel or the like, lost wax precision casting is preferred. When it is made of zinc, aluminum, or the like, high temperature and high pressure metal is pressed into the mold. Die casting, which is a casting method that quickly solidifies and forms, is suitable. In particular, when a light metal such as an aluminum alloy is used, casting is preferably performed by die casting that can reduce the cost.

  A further characteristic configuration of the stove according to the present invention is that the burner member is made of a metal material that is not easily discolored by high-temperature oxidation.

Here, the color change is an apparent color change of the metal due to the formation of an oxide film on the surface of the metal due to high temperature oxidation.
When the burner member is made of stainless steel or the like, it has a beautiful appearance with a silver metal color before being used by heating, but after being used by heating, a brown or black oxide film is formed and the appearance is impaired. was there.
Therefore, in this characteristic configuration, a metal material having an oxide that is colorless and transparent or white is selected as the material of the burner member, and the aesthetic appearance of the burner member is maintained.
Examples of the metal whose oxide film is colorless and transparent to white include light metals such as zinc, aluminum, and aluminum alloys. Here, since the light metal has a low melting point, there is a concern about melting, deformation, etc., but in the present invention, the burner member has an air-fuel mixture supply path through which the air-fuel mixture circulates. Since the burner member is cooled by the circulation, the light metal can be used as the material of the burner member.

According to a further characteristic configuration of the stove according to the present invention, the burner member is placed on the top plate so as to surround the first member placed on the top plate and the upper and side portions of the first member. A second member,
The second member covers a top part of the first member and has a horizontal part having the flame mouth, and a side part extending downward from a part other than the part where the flame mouth is formed in the horizontal part. It is in the point comprised by the integrally molded member.

Conventionally, in order to clean the inside, the burner member is normally configured so that it can be divided into an upper member and a lower member horizontally at the lower end of the flame port. However, in this case, a thermal resistance is generated between the upper member and the lower member at a portion that is divided into the upper member and the lower member other than the lower end of the flame opening. Therefore, it is difficult to transfer the heat of the upper member to the lower member and dissipate the heat to the top plate or the like, and the burner member is not cooled well, and the burner member may be melted, deformed, or discolored. Further, there is a problem that rattling occurs when the upper member and the lower member are fitted to each other, and stability when a heating object such as a pan is placed is lacking.
According to the above characteristic configuration, since the first member and the second member can be divided at the lower end of the part where the flame mouth is formed, the horizontal part is adopted while adopting the structure that can be divided horizontally at the lower end of the flame mouth. And the 2nd member which has a side part is comprised by the integrally molded member. Therefore, since the heat of the second member can be conducted to the side portion and dissipated to the top plate, etc., the cooling of the burner member is promoted, and the burner member can be removed without problems such as melting, deformation, and discoloration. Can be configured. In addition, since the second member on which the heating object such as a pan is placed has a side portion placed on the top plate, even if the heating object such as a pot is placed, no rattling or the like occurs. The stability of mounting can be improved.

According to a further feature of the stove according to the present invention, the burner member constituting the single burner is an even number,
The second burner disposed between the first burner member group in which the even number of the burner members are disposed every other circumferential direction of the arrangement reference circle and the burner member constituting the first burner member group. Divided into two groups,
In the point which is provided with the combustion amount adjustment means which can adjust the combustion amount of the said 1st burner member group and the said 2nd burner member group separately, respectively.

According to the above characteristic configuration, since the combustion amount adjusting means is configured to be able to adjust the combustion amounts of the first burner member group and the second burner member group separately, the first burner member group and the second burner member The combustion amount of one burner member group can be adjusted while either one of the groups is burned and the other is not burned. Thereby, even in the present invention in which the primary air ratio is high and it is difficult to increase the aperture ratio, the aperture ratio can be increased to about twice.
In addition, the burner member group to be burned is made up of the first burner member group and the second burner member group by configuring the first burner member group and the second burner member group with different numbers or opening areas. In addition to switching to either one, it is possible to further change the aperture ratio by the change in the number of flame openings or the opening area.
Further, the flame outlet of one burner member group can be provided on the inner side near the center of the arrangement reference circle, and the flame outlet of the other burner member group can be provided on the outer side that is equal or far from the center of the arrangement reference circle. Thereby, for example, when heating an object to be heated such as a pot with a small bottom area, the flame is heated by using a burner member group provided on the inner side near the center of the arrangement reference circle. Spreading outside the pan can be suppressed, and thermal efficiency and safety can be improved.

According to a further characteristic configuration of the stove according to the present invention, the air-fuel mixture supply path inside the burner member has an inner mixture that guides the air-fuel mixture to an inner flame port disposed on the side closer to the center position of the arrangement reference circle. An air supply path, and an outer air-fuel supply path that guides the air-fuel mixture to an outer flame outlet disposed radially outside the arrangement reference circle from the inner flame mouth,
A combustion amount adjusting means that can individually adjust the combustion amount at the inner flame mouth and the combustion amount at the outer flame mouth is provided.

  According to the above characteristic configuration, the combustion amount adjusting means is configured to be able to adjust the combustion amount in the inner flame mouth and the combustion amount in the outer flame mouth separately, for example, a heating target such as a pan with a small bottom area When heating an object, only the inner flame outlet can be ignited and heated. When heating an object to be heated such as a pan with a large bottom area, both the inner and outer flame outlets are ignited. And can be heated. Thus, for example, by adjusting the amount of combustion at the inner flame outlet and the amount of combustion at the outer flame mouth according to the bottom area of the pan, the flame is prevented from spreading outside the pan, saving energy and safety. Can be secured.

  A first embodiment of a stove 100 according to the present invention will be described with reference to the drawings.

[First Embodiment]
In the stove 100 shown in FIG. 1, (a) represents a plane and (b) represents an elevation. In this embodiment, the stove 100 arranges the burner member 1 having the support portion 21 that supports the pan 12 (an example of an object to be heated) on the top plate 8 at regular intervals with respect to the arrangement reference circle A, A fuel nozzle 7 for supplying fuel gas under the top plate 8, a venturi mixer 6 for generating an air-fuel mixture capable of primary combustion from the fuel gas and air supplied from the fuel nozzle 7, and the generated air-fuel mixture Is provided as a burner 22 with a (ring) header 5 (an example of a distributor) that supplies and distributes each of the burner members 1 via the pipes 4.

The burner member 1 includes a plurality of main flame ports 2 (an example of a flame port) that are distributed at equal intervals along the major axis on one side of the abdomen. The opening direction of the main flame outlet 2 is directed in the circumferential direction of the above-described arrangement reference circle A, and the vertical direction perpendicular to the top plate 8 is horizontal or slightly upward from horizontal. Thereby, the main flame 10 formed from the main flame mouth 2 is formed so as to turn as a whole with respect to the burner 22.
Further, the flame transfer port 3 is provided on the center position side of the arrangement reference circle A of the burner member 1. The opening direction of the flame transfer port 3 is directed to the flame transfer port 3 of the adjacent burner member 1, and the fire transfer flame 11 formed by the flame transfer port 3 is the fire of the adjacent burner member 1. It is comprised so that the air-fuel | gaseous mixture injected from the transfer flame mouth 3 may be contacted.
Thereby, the igniter 15 described later ignites at least one of the plurality of burner members 1 arranged around the arrangement reference circle A, so that the burner member 1 adjacent to the burner member 1 is transferred. To do. All the burner members 1 are configured to be ignitable by performing the fire transfer in each of the plurality of burner members 1.

In addition, the opening direction of the flame mouth 3 for a fire transfer can also be opened toward the main flame mouth 2 of the adjacent burner member 1, and also in this case, the fire transfer between the burner members 1 is performed more favorably. .
Further, the distance between the flame transfer port 3 and the flame transfer side flame ports 2 and 3 is set such that the flame transfer flame 11 formed by the flame transfer port 3 and the flame transfer side flame port. It is suitably set to the distance where the air-fuel mixture injected from 2 and 3 comes into contact.

The burner member 1 has an air-fuel mixture supply path 23 for guiding all the primary combustible air-fuel mixture supplied from either the upper surface side, that is, the bottom side of the top plate 8 or one end side of the long axis to the flame opening. It has.
In the present embodiment, the air-fuel mixture supply passage 23 of the burner member 1 is configured to have an opening on the bottom side of the burner member 1 so as to guide the air-fuel mixture to the flame ports 2 and 3.

The air-fuel mixture in the burner 22 is generated by injecting fuel gas from the fuel nozzle 7 toward the venturi mixer 6, and the venturi mixer 6 converts the fuel gas and air into an air-fuel mixture capable of primary combustion. Then, the air-fuel mixture generated as described above is distributed and supplied from the annular ring header 5 to the respective burner members 1 via the pipes 4, passes through the air-fuel mixture supply path 23 in the burner member 1, and the main flame. It is led to the mouth 2 and the flame port 3 for fire transfer. Here, it is preferable that the pressure loss of each pipe 4 is the same.
Thus, the air-fuel mixture supplied to each burner member 1 is ignited by an igniter 15 shown in FIGS. 5 and 6 to be described later, and the main flame 10 formed in the main flame opening 2 is the above-mentioned. A flame that turns around the center position of the arrangement reference circle A as a rotation axis heats the pan 12 and the like placed on the support portion 21 of the burner member 1 well, and the flame transfer formed at the flame transfer port 3 The working flame 11 ignites the air-fuel mixture injected from the flame outlets 2 and 3 of the adjacent burner members 1.

  The shape of the burner member 1 may be any shape as long as the pan 12 can be supported on the top support portion 21 and a plurality of main flame outlets 2 and flame transfer flame ports 3 can be formed on the abdomen. However, from the viewpoint of improving the cleanability and aesthetics, a simple hexahedral shape, cylindrical shape, prismatic shape, truncated cone shape, truncated pyramid shape, or the like is preferable.

When the shape of the burner member 1 is a geometric shape such as a hexahedral shape having a long axis, for example, the height of the support portion 21 at the top of the burner member 1 gradually decreases as the center position of the arrangement reference circle A is approached. It is preferable to constitute so as to be. Thereby, the pan 12 is supported at an appropriate position of the support portion 21 in accordance with the size of the bottom area. As a result, since the pan 12 having various bottom areas can be supported at one point on the support portion 21 of each burner member 1, the stability of placing the pan 12 can be enhanced. In this case, it is possible to further improve the stability of placing the pan 12 by making the support portion 21 a curved shape that is convex upward, that is, a shape that is rounded.

  On the other hand, when the shape of the burner member 1 is, for example, a simple cylindrical shape having no major axis as shown in FIG. 10, for example, the burner member 1 is arranged in a double or more arrangement reference circle A. On the other hand, the burner members 1 are arranged at equal intervals, the height of the burner member 1 arranged with respect to the outer arrangement reference circle A is increased, and the height of the burner member 1 arranged with respect to the inner arrangement reference circle A is lowered. It is preferable to configure. Thereby, the pan 12 is supported at an appropriate position of the support portion 21 in accordance with the size of the bottom area. As a result, since the pan 12 having various bottom areas can be supported at one point on the support portion 21 of each burner member 1, the stability of placing the pan 12 can be enhanced. In this case, it is possible to further improve the stability of placing the pan 12 by making the support portion 21 a curved shape that is convex upward, that is, a shape that is rounded.

  The number of the plurality of burner members 1 constituting the burner 22 is preferably about 3 to 6 when the burner member 1 has a long axis when the pan 12 is placed. On the other hand, as shown in FIG. 11, when the burner member 1 has a shape that does not have a long axis and is arranged around a double or more arrangement reference circle A, about 12 or less are preferable.

It is desirable that the burner member 1 is made of a metal that is not easily discolored by high temperature oxidation. Here, the discoloration means that the apparent color of the metal changes due to the formation of an oxide film on the surface of the metal with high-temperature oxidation by a flame.
Specifically, the burner member 1 is preferably made of zinc, aluminum, and a light metal such as an aluminum alloy containing mainly zinc in a trace amount. The light metal oxide is colorless and transparent or white. For this reason, the burner member 1 made of the light metal can maintain an excellent aesthetic appearance by maintaining a metallic color such as silver or white even after being heated by a flame with use.
In an ordinary stove 100, the burner member 1 is exposed to the flame of the burner 22 and becomes high temperature. Therefore, if it is composed of the above-described light metals such as zinc, aluminum, and aluminum alloys having a relatively low melting point, there is a risk of melting and deformation. There is. However, since the stove 100 of the present invention has the air-fuel mixture supply passage 23 for circulating the air-fuel mixture having a low temperature inside the burner member 1, the burner member 1 can be cooled by the air-fuel mixture. Thereby, it can form using the light metal, such as zinc, aluminum, and an aluminum alloy, as a material of the burner member 1, and the burner 22 which becomes the appearance which was hard to change a color with use and was excellent in aesthetics is realizable. In addition, since the burner member 1 is heated by the adjacent burner member 1, it is preferable to employ a positive cooling structure that radiates heat to the top plate 8.

  In the present invention in which the number of burner members 1 is increased as compared with the prior art, the cost can be reduced by manufacturing the burner member 1 by casting, forging, or the like so as to be suitable for mass production. The casting method differs depending on the metal forming the burner member 1. When the burner member 1 is made of (cast) iron, sand casting is preferable. When the burner member 1 is made of stainless steel or the like, lost wax precision casting is preferable. In lost wax precision casting, a wax model is first formed by injection molding on a precision mold, and a refractory slurry for melting the wax model is poured between the mold and the wax model to obtain a predetermined thickness. Create a mold. Lost wax precision casting is unsuitable for large-scale casting, and has the feature that the number of casting steps increases and the casting cost increases. When the burner member 1 is made of light metal such as zinc, aluminum, or an aluminum alloy, die casting that is a casting method in which a high-temperature and high-pressure metal is press-fitted into a mold and rapidly solidified to form is preferable. Die casting has advantages such as high casting accuracy, formation of small-diameter holes and the like, a short casting cycle, and high productivity.

The venturi mixer 6 supplies the primary combustible air-fuel mixture 2 to the main flame outlet 2 and the flame transfer flame outlet 3 so that the primary air ratio of the air-fuel mixture is in the range of 0.6 or more and 1.5 or less. As described above, an air-fuel mixture is generated by sucking and mixing air at atmospheric pressure and fuel gas having a pressure higher than that of the air.
An axial fan or the like (not shown) for cooling an electric device (not shown) or the like can be arranged in the vicinity of the air inlet 6a of the venturi mixer 6, and the air sucked by the venturi mixer 6 is As a result of being pressurized by the axial fan or the like, an air-fuel mixture capable of primary combustion is suitably generated.

The supply duty ratio adjusting means includes a shutoff valve 25 that shuts off the supply of fuel gas provided upstream of the fuel nozzle 7, and a fuel gas supply amount provided between the shutoff valve 25 and the fuel nozzle 7. From the on-off valve 24 to be adjusted, and the control device 26 that periodically opens and closes the on-off valve 24 and the shutoff valve 25 and controls the open time ratio that is the ratio of the open time and the close time to be changeable. It is configured.
The duty ratio control is realized by the control device 26 mainly controlling the opening time ratio of the on-off valve 24. In particular, when the burner 22 is used with a small amount of combustion (small fire), the control device 26 reduces the open time ratio of the on-off valve 24, thereby supplying the air-fuel mixture intermittently and the main flame 10 with a low amount of combustion. And the flame 11 for a fire transfer is formed.

The temperature sensor 9 that measures the temperature of the pan 12 is attached to the center position of the arrangement reference circle A described above. The temperature sensor 9 is fitted into a through-hole penetrating the top plate 8, and the temperature sensor 9 and the through-hole are appropriately sealed so that the broth or the like does not flow into the stove 100. . Around the temperature sensor 9, a cooling air flow passage (not shown) through which cooling air, which is cooling air, flows is provided. The cooling air flows through the cooling air flow passage and passes through the temperature sensor 9. Cooling.
As the temperature sensor 9, in addition to the thermistor, a temperature sensor 9 such as a contact sensor such as a thermocouple or a non-contact light detection sensor such as infrared detection can be used.

FIG. 1B is an elevation view showing a state where the pan 12 is placed on the stove 100. As described above, the support portion 21 of the burner member 1 has an upwardly convex curved shape, and the height of the support portion 21 gradually decreases as the center position of the arrangement reference circle A is approached. It is configured. Thereby, the pan 12 can be supported stably.
Further, the height direction positions of the main flame mouth 2 and the flame for flame transfer 11 can be set such that the main flame 10 and the flame for flame transfer 11 do not directly contact the top plate 8 and the pan 12. Thus, overheating of the top plate 8 can be suitably prevented, and incomplete combustion due to quenching of the main flame 10 due to cooling of the pan 12 and the flame 11 for transfer of fire can be prevented.
In addition, the shape of the support part 21 of the burner member 1 which mounts the pan 12 stably is not limited to the shape mentioned above, For example, even if it is a shape where several places contact | abut with the bottom of the pan 12 The object of the present invention can be achieved.

A stove 100 shown in FIG. 2 is a modification of the stove 100 shown in FIG. 1 described so far, and includes a header 5 for supplying an air-fuel mixture to each burner member 1 at the center position of the arrangement reference circle A described above. And a radial pipe 4 that guides the air-fuel mixture from the header 5 to each burner member 1.
Only a single through hole is formed in the top plate 8 immediately below the header 5, and a through pipe 29 connecting the Venturi mixer 6 and the header 5 is appropriately sealed and fitted into the through hole. Yes.
The air-fuel mixture generated by the venturi mixer 6 in the burner 22 is supplied from the bottom of the top plate 8 to the header 5 disposed on the top plate 8, distributed by the header 5, and each burner via the pipe 4. It is distributed and supplied to the member 1. Thereby, the number of through-holes formed in the top plate 8 can be reduced, the number of manufacturing steps can be reduced, the cost can be suppressed, and the trouble of sealing the formed through-holes can be suppressed.
In addition, the said header 5 can be comprised integrally with the temperature sensor 9 mentioned above, The said header 5 and the temperature sensor 9 can be provided in the stove 100 simultaneously.

[Second Embodiment]
Next, 2nd Embodiment of the stove 100 which concerns on this invention is described based on drawing.
The burner 22 in the stove 100 shown in FIG. 3 is provided above the top plate 8 so that the venturi mixer 6 can suck the fuel gas from the fuel nozzle 7 provided in the vicinity of the exhaust cover 14 on the rear side of the stove 100. The ring header 5 (an example of a hollow member) is connected and fixed to the venturi mixer 6 and connected to and fixed to each burner member 1.

The air-fuel mixture in the burner 22 is generated by the venturi mixer 6 and distributed and supplied to the respective burner members 1 by the ring header 5.
In addition, a decorative cover 13 having an air opening (not shown) at the lower portion is attached so as to cover the venturi mixer 6 and the fuel nozzle 7, and the decorative cover 13 is fixedly connected to the venturi mixer 6 and the ring header 5. can do. Thereby, since it becomes the structure which cannot see the venturi mixer 6 and the fuel nozzle 7 from the outside, it can be set as the stove 100 excellent in aesthetics. Further, the burner 22 can be installed on the top plate 8 without opening any hole in the top plate 8.

Moreover, the stove 100 shown in FIG. 4 represents the state which removed from the stove 100 the burner 22 which integrated the burner member 1, the venturi mixer 6, and the ring header 5 from the stove 100. FIG. That is, the burner 22 is configured such that the burner member 1, the venturi mixer 6, and the ring header 5 are connected and fixed, and can be removed from the top plate 8 without using a tool. In the example shown in FIG. 4, the top plate 8 is provided with a recess 27 in which the top plate 8 and the burner 22 can be fitted to position the burner 22, and the above-described integrated burner 22 is fitted. The structure which can be attached easily is shown.
Thereby, the stove 100 with very good cleanability can be realized. Further, if the burner 22 is removed and stored, the top plate 8 can be made almost completely flat.

  As the temperature sensor 9, an infrared sensor capable of measuring the temperature of the pan 12 in a non-contact manner can be suitably used. By providing the infrared sensor at the lower part of the top plate 8, the top plate 8 can be made flatter, and a stove with good cleanability and excellent aesthetics can be realized.

5 and 6 are views showing a state in which one igniter 15 and one flame detector 16 are arranged on the stove 100, respectively. FIG. 5 shows the arrangement of the igniter 15 and the flame detector 16 in the entire stove 100, and FIG. 6 shows the arrangement of the igniter 15 and the flame detector 16 with respect to the burner member 1.
The igniter 15 is provided on any one of the plurality of burner members 1, and the flame detector 16 is transferred to the last of the burner members 1 that sequentially transfer from the burner member 1 provided with the igniter 15. The burner member 1 is provided. That is, the arrangement of the igniter 15 and the flame detector 16 in FIG. 5 is an arrangement when the fire transfer is performed clockwise.
As described above, by providing each of the igniter 15 and the flame detector 16, the fire transfer flame 11 of the flame transfer port 3 is formed in a form that ignites the adjacent burner member 1, and the burner 22. It is possible to realize overall ignition and flame detection.
An ignition plug or the like can be preferably used for the igniter 15, and a thermocouple, a frame rod, an ultraviolet photoelectric tube or the like can be preferably used for the flame detector 16.

[Another embodiment]
Another embodiment of the stove 100 of the present invention will be described based on the drawings.

(A) FIG. 7 is a modification of the first embodiment shown in FIG. 1, in which each burner member 1 is translated by a fixed distance Z as a deviation in a direction perpendicular to its long axis. It is a form. Here, all the burner members 1 are arranged so as to maintain a predetermined separation distance.
As a result, an aesthetics different from the embodiment described above can be obtained, and the opening direction of the main flame mouth 2 approaches the direction toward the center, and the area of the bottom of the pan 12 heated by the main flame 10 is increased. Can be improved.

  (B) FIG. 8 shows another embodiment in which the number of burner members 1 is five. The function of stably supporting the pan 12 of the burner member 1 is said to be best when the number of the burner members 1 is about 5 or more and 6 or less.

  (C) FIG. 9 shows another embodiment in which each of the burner members 1 in FIG. 8 is arranged so as to move in parallel by a fixed distance Z as a deviation in a direction perpendicular to the major axis and keep a predetermined separation distance. It is a form.

(D) FIG. 10 shows an example in which the burner member 1 has a cylindrical shape and is arranged in a pentagonal shape when viewed from above. The support part 21 of the burner member 1 is formed in a curved shape that is convex upward, so that the pan 12 is stably placed and the pan 12 is not damaged.
In the present embodiment, the main flame mouth 2 and the fire-transfer flame mouth 3 are configured to be mutually usable. The object of the present invention can be achieved even if the opening direction of the main flame outlet 2 and the flame transfer flame opening 3 is the direction of the center position of the arrangement reference circle A.
The shape of the burner member 1 can be a cylindrical shape, a prismatic shape, a truncated cone shape, a truncated pyramid shape, or the like, and the top portion (support portion 21) of the geometric shape is inclined. It can be a shape.
Also, the burner member 1 is arranged in a so-called pentagonal arrangement in which five burner members 1 are arranged at equal intervals with respect to the arrangement reference circle A, as well as three to twelve burners with respect to the arrangement reference circle A. An arrangement in which the members 1 are arranged at equal intervals is suitable.

(E) FIG. 11 shows an embodiment in which the columnar burner members 1 are arranged in a pentagonal shape at regular intervals with respect to the double arrangement reference circle A. In this case, in order to stably place the pan 12, it is preferable that the height of the inner burner member 1 is lower than the height of the outer burner member 1.
In this embodiment, a support member (not shown) for stabilizing the placement of the pan 12 is placed between the burner members 1 arranged at equal intervals with respect to the double arrangement reference circle A. It can also be suitably arranged.

  (F) FIG. 12 shows another embodiment in which each of the burner members 1 arranged as shown in FIG. 1 is rotated by an angle α which is a declination with a predetermined position on the major axis of each burner member 1 as the rotation center. Thereby, since the opening direction of the main flame opening 2 approaches the direction which faces a center position, and the area of the bottom of the pan 12 which the main flame 10 heats increases, thermal efficiency can be improved.

  (G) FIG. 13 shows another embodiment in which the number of burner members 1 is increased from four to six in the first embodiment shown in FIG. The function of stably supporting the pan 12 of the burner member 1 is said to be best when the number of the burner members 1 is about 5 or more and 6 or less.

(H) FIG. 14 is another embodiment provided with a support member 30 having a support portion 31 for improving the stability of placing the pan 12 between the burner members 1. The support member 30 does not have a flame outlet. In the burner 22 shown in FIG. 14, three burner members 1 are arranged around the arrangement reference circle A, and three support members 30 are arranged around the arrangement reference circle A between the burner members 1. It is configured. In this case, the burner members 1 do not have to be arranged at equal intervals with respect to the arrangement reference circle A. If the burner members 1 are arranged at predetermined intervals, the pan 12 can be stably placed.
The support members 30 do not need to be provided between all the burner members 1. For example, when the burner member 1 is arranged around 4 to 6 around the arrangement reference circle A, the center of the arrangement reference circle A is provided. For example, two or four of them may be arranged substantially symmetrically with respect to the position. That is, as long as the pan 12 can be stably placed with respect to the support portion 21 of the burner member 1 and the support portion 31 of the support member 30, any arrangement position can be taken.
Further, the main flame outlets 2 provided in each burner member 1 can be provided on both sides of the abdomen of each burner member 1. Thereby, the pot 12 etc. can be heated favorably also in the burner 22 of the form which decreased the number of the burner members 1 and increased the number of the supporting members 30.

(I) FIG. 15 shows a header 5 that is arranged at the center position of the arrangement reference circle A and that supplies the air-fuel mixture to each burner member 1 and a radial pipe that guides the air-fuel mixture from the header 5 to each burner member 1. 4 is another embodiment in which the number of burner members 1 is six.
The burner 22 according to the other embodiment can place the pan 12 more stably and can increase the number of the main flame outlets 2 as the number of the burner members 1 increases. be able to.

  (J) FIG. 16 is another embodiment provided with the flame transfer port 3 in FIG. 15 as the main flame port 2 toward the center position of the arrangement reference circle A. In a normal burner, a flame is not formed at the center position of the burner. However, in the burner 22 according to another embodiment, a flame can be formed well near the center position of the arrangement reference circle A. The heating area can be made larger than 22 to improve the thermal efficiency.

  (K) In FIG. 17, the burner 22 is mixed with the plurality of burner members 1, the header 5 arranged at the center position of the arrangement reference circle A and supplying the air-fuel mixture to each of the burner members 1, and the header 5. A supply port 32, which is an inlet for supplying air, is integrally formed and can be rotated in the circumferential direction with the supply port 32 provided at a position away from the center position of the arrangement reference circle A as a fulcrum. It is a top view which shows another embodiment comprised in this.

FIG. 18 is an elevation view of the stove 100 according to the another embodiment. The venturi mixer 6 and the fuel nozzle 7 are arranged so as to be connected to the supply port 32 from the lower part of the top plate 8. Thus, when the burner 22 rotates in the circumferential direction with the supply port 32 as a fulcrum, the venturi mixer 6 and the fuel nozzle 7 do not interfere with the circumferential rotation of the burner 22, so the burner 22 can freely move in the circumferential direction. It can rotate and the cleaning property of the stove 100 can be improved.
Further, by arranging the venturi mixer 6 and the fuel nozzle 7 below the top plate 8, the venturi mixer 6 and the fuel nozzle 7 can be made invisible from the outside. Thereby, the beauty | look of the stove 100 can be improved.

FIG. 19 shows a state diagram when the burner 22 is rotated in the circumferential direction with the supply port 32 as a fulcrum in the other embodiment. For example, the burner 22 can be configured to be rotatable in the circumferential direction with the supply port 32 as a fulcrum by pressing a burner fixing switch (not shown) provided in the supply port 32. The lower surface of the burner member 1, the lower surface of the header 5, and the upper surface of the top plate 8 can be easily cleaned. After cleaning is completed, the burner 22 can be configured to be fixed at the reference position by returning the burner 22 to the reference position and pressing the burner fixing switch again.
In the another embodiment, the member serving as a fulcrum rotating in the circumferential direction may not be the supply port 32 separately. For example, other members constituting the burner 22 can be suitably used as the fulcrum, and newly You may provide the member used as a fulcrum.
Furthermore, in the said another embodiment, although the position of the fulcrum mentioned above was made into the position which remove | deviated from the center position of the burner 22, it is good also as a center position of the burner 22 separately.

The stove 100 according to the other embodiment is
A stove comprising a burner that forms a flame on the top plate, and at the top of the burner, a stove that heats an object to be heated by the flame formed by the flame mouth,
The top portion has a support portion that supports the heating object, the plurality of flame openings that open to the abdomen, and an all-combustible air-fuel mixture supplied from the bottom side or one end side to the inside. A plurality of burner members having an air-fuel mixture supply path leading to the flame outlet constitute the burner as a unit,
Each of the burner members is arranged around the arrangement reference circle on the top plate, and the supply port of the air-fuel mixture provided at the center position of the arrangement reference circle or the position deviated from the center position is provided. The fulcrum is configured to be rotatable in the circumferential direction.

(L) As shown in FIG. 20, the burner member 1 includes a first member 62 placed on the top plate, and a second member placed on the top plate surrounding the top and sides of the first member 62. The second member 63 includes a horizontal part 63a that covers the first member 62 and has the flame opening 2 and a side that extends downward from a part other than the part where the flame opening 2 is formed in the horizontal part 63a. You may comprise by the integrally molded member with which the site | part 63b continues in a row.
Thereby, by dividing into the 1st member 62 and the 2nd member 63, the structure which can be divided horizontally at the lower end of the flame mouth 2 is adopted as it is, and the inside can be easily cleaned. Moreover, by configuring the second member 63 having the horizontal part 63a and the side part 63b as an integrally formed member, the heat of the second member 63 can be radiated to the top plate 8 and the like through the side part 63b. Cooling of the burner member 1 can be promoted. As a result, the burner member 1 can be configured without problems such as melting, deformation, and discoloration. Moreover, since the side part 63b is mounted in the top plate 8, the 2nd member 63 in which the heating target objects 12, such as a pan, are mounted, even if the heating target object 12, such as a pan, is mounted. It is possible to improve the stability of the mounting without causing the above.

  (M) In the first embodiment, the upper portion of the burner member 1 has a shape that is inclined downward toward the center position of the arrangement reference circle A, but is inclined upward toward the center position. The object of the present invention can be achieved even when there is a shape that is raised or a shape in which some or some of the upper portion is raised.

(N) About the flame opening 2 of the burner member 1, as shown in FIG. 21, it can be made to open toward the edge part side of the burner member 1 in the arrangement direction of the some flame opening 2, for example. In FIG. 21, the burner member 1 having an oval cross section is arranged such that the major axis direction of the burner member 1 is the radial direction of the arrangement reference circle A, and the radial direction of the arrangement reference circle A is shown. The flame mouth 2 located on the outermost side of the arrangement is opened toward the radially outer side of the arrangement reference circle A. Thereby, a flame can be formed on the radially outer side of the burner member 1. Further, the flame mouth 2 located on the radially innermost side of the placement reference circle A is opened toward the radially inner side of the placement reference circle A, and a flame is formed on the radially inner side of the burner member 1. Can do. Thereby, the innermost flame port 2 can also be used as a flame port for fire transfer.

(O) In the burner 100 of the present invention, for example, as shown in FIG. 22, the number of the burner members 1 constituting the single burner 22 is an even number, and the plurality of burner members 1 are arranged around the arrangement reference circle A. The first burner member group H arranged every other direction and the second burner member group I arranged between the burner members 1 constituting the first burner member group H are divided into two groups. The first burner member group H, the second burner member group I, and the combustion amount adjusting means X that can adjust the combustion amount can be provided.
The combustion amount adjusting means X includes a first supply path 71 that leads the fuel gas supplied from the supply side through the fuel supply path 73 to the first burner member group H and a second supply path 72 that leads to the second burner member group I. A first adjustment valve 42 that adjusts the flow rate of the fuel gas in the first supply path 71, and a first cutoff valve 43 that allows or blocks the supply of the fuel gas to the first burner member group H in the first supply path 71. A second regulating valve 44 that adjusts the flow rate of the fuel gas in the second supply path 72, and a second cutoff valve 45 that allows or blocks the supply of the fuel gas to the second burner member group I in the second supply path 72. And a control device 26 that changes the opening degree of the first adjustment valve 42 and the second adjustment valve 44 and switches the open / close state of the first cutoff valve 43 and the second cutoff valve 45.
The venturi mixer 6 and the combustion nozzle 7 as described above are provided on the downstream side of the first regulating valve 42 and the first shutoff valve 43 in the first supply passage 71, and the fuel gas and the combustion air are mixed to completely An air-fuel mixture capable of primary combustion is supplied to the first burner member group H. Similarly, the venturi mixer 6 and the combustion nozzle 7 are also provided downstream of the second adjustment valve 44 and the second shutoff valve 45 in the second supply path 72.
The combustion amount adjusting means X is configured such that the control device 26 switches the first shut-off valve 43 between an open state and a closed state and controls the opening degree of the first adjustment valve 41 so that the combustion amount of the first burner member group H The amount of combustion of the second burner member group I can be adjusted by switching the second shut-off valve 45 between an open state and a closed state and controlling the opening of the second adjustment valve 43.
For example, the control device 26 shuts off either the first shut-off valve 43 or the second shut-off valve 45 so that the fuel amount adjusting means X is the first burner member group H or the second burner member group I. Only one of the first burner member group H and the second burner member group I can be burned by permitting the supply of the fuel gas to only one of them. As a result, the aperture ratio can be about doubled.

  In this embodiment, the number or the opening area of the main flame openings 2 provided in the burner member 1 of the first burner member group H and the burner member 1 of the second burner member group I can be configured to be different from each other. . As a result, the control device 26 can burn only one of the first burner member group H or the second burner member group I to change the throttle ratio, and in addition, the number of the main flame ports 2 or the opening area The aperture ratio can be changed by changing the amount.

In this embodiment, the main flame outlet 2 of the first burner member group H is provided on the inner side near the center of the arrangement reference circle A, and the main flame outlet 2 of the second burner member group I is equally or arrangement reference circle. It can comprise so that it may provide in the outer side far from the center of A. For example, the combustion amount adjusting means X is arranged by the first burner member group H so that the control device 26 sets the first shut-off valve 43 in the open state and the second shut-off valve 45 in the closed state. The side close to the center of the circle A can be burned. Therefore, when heating the heating object 12 such as a pot having a relatively small bottom area, by setting in this way, the formation of a flame on the outside of the heating object 12 is suppressed and safety is improved. Demonstrate the function to enhance.
In this embodiment, the burner member 1 has been described as having a shape having a long axis. However, the burner member 1 may be configured using a simple cylindrical shape having no long axis as shown in FIGS. it can.

(P) As shown in FIGS. 23 and 24, the burner 22 of the present invention has an inner flame in which the air-fuel mixture supply path 23 inside the burner member 1 is disposed on the side closer to the center position of the arrangement reference circle A. An inner mixture supply path 51 that guides the mixture to the mouth, and an outer mixture supply path 52 that guides the mixture to the outer flame outlet disposed radially outside the arrangement reference circle A from the inner flame mouth. The combustion amount adjusting means X that can adjust the combustion amount at the inner flame mouth and the combustion amount at the outer flame mouth can be provided. The inner mixture supply path 51 and the outer mixture supply path 52 are partitioned by a partition wall 53.
The combustion amount adjusting means X supplies fuel gas to the inner flow path 74 that leads the fuel gas from the fuel supply path 73 that circulates the fuel gas supplied from the supply side to the inner gas mixture supply path 51, and to the outer gas mixture supply path 52. An outer flow path 75 that leads, an inner adjustment valve 54 that adjusts the flow of fuel gas in the inner flow path 74, an inner cutoff valve 55 that allows or blocks the supply of fuel gas to the inner gas mixture supply path 51, and an outer flow An outer adjustment valve 56 that adjusts the flow of fuel gas in the passage 73, an outer shut-off valve 57 that allows or blocks the supply of fuel gas to the outer mixture supply passage 52, and the inner control valve 54 and the outer control valve 56 are opened. And a control device 26 that controls the degree and switches the inner shut-off valve 55 and the outer shut-off valve 57 between an open state and a closed state.
The combustion amount adjusting means X is configured such that the control means 26 switches the inner shut-off valve 55 between an open state and a closed state and adjusts the opening degree of the inner control valve 54 so that the inner flame port close to the center of the arrangement reference circle A is obtained. The amount of combustion in the combustion chamber can be adjusted, and the combustion in the outer flame outlet radially outside the inner flame mouth is performed by switching the outer cutoff valve 57 between the open state and the closed state and adjusting the opening degree of the outer control valve 56. The amount is adjustable.
For example, since the control device 26 can open the inner shut-off valve 55 and close the outer shut-off valve 57, a flame can be formed only in the inner flame mouth, so that the heating target such as a pot having a small bottom area can be formed. When heating the object 12, it can suppress that a flame is formed in the outer side of the heating target object 12, and can improve safety | security.
In this embodiment, the burner member 1 has been described as having a shape having a long axis. However, the burner member 1 may be configured using a simple cylindrical shape having no long axis as shown in FIGS. it can.

  The stove according to the present invention can be effectively used as a novel stove excellent in cleanability and aesthetics while maintaining thermal efficiency.

The top view (a) of the stove which concerns on 1st Embodiment, and the elevation (b) showing the state which mounted the pan in the said stove The top view and elevation which show the example which changed the installation position of the divider | distributor in the stove which concerns on 1st Embodiment (b) The top view (a) and elevation (b) of the stove according to the second embodiment The perspective view of the state which removed the burner in the stove which concerns on 2nd Embodiment The top view which showed arrangement | positioning with the igniter and flame detector of this invention Elevation view showing arrangement of igniter (a) and flame detector (b) of the present invention Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Plan view of stove according to another embodiment Elevated view of the stove in FIG. FIG. 17 is a state diagram in which the burner is rotated with the supply port as a fulcrum in another embodiment of FIG. The perspective view of the burner member which concerns on another embodiment, and the perspective view which isolate | separated the said burner member Plan view of burner according to another embodiment Plan view of burner according to another embodiment Plan view of burner according to another embodiment Side sectional view of the burner according to FIG.

Explanation of symbols

1: Burner member 2: Main flame port 3: Fire transfer flame port 4: Piping 5: Header 6: Venturi mixer 8: Top plate 9: Temperature sensor 10 for detecting the bottom temperature of the pan 10: Main flame 11: Fire transfer flame 12: Pot 21: Supporting part 22: Burner 23: Mixture supply path 24: On-off valve 25: Shut-off valve 26: Control device 29: Through pipe 32: Supply port 51: Inner mixture supply path 52: Outer mixture supply path 53: Partition wall 62: first member 63: second member 63a: horizontal part 63b: side part H: first burner member group I: second burner member group A: arrangement reference circle X: combustion amount adjusting means α: declination angle Z: Deviation

Claims (18)

A stove comprising a burner that forms a flame on the top plate, and at the top of the burner, a stove that heats an object to be heated by the flame formed by the flame mouth,
The top portion has a support portion that supports the heating object, the plurality of flame openings that open to the abdomen, and an all-combustible air-fuel mixture supplied from the bottom side or one end side to the inside. A plurality of burner members having an air-fuel mixture supply path leading to the flame outlet constitute the burner,
Each of the burner members is arranged around the arrangement reference circle on the top plate. The respective burner members in the burner are arranged at equal intervals,
At least one of the flame outlets of each of the burner members is configured as a flame-transfer flame outlet that forms a flame that transfers to the flame mouth of the adjacent burner member. Item 10. The stove according to item 1. The shape of the support portion of the burner member is an upwardly convex curved shape,
3. The stove according to claim 1, wherein a height of the support portion of the burner member is configured to be gradually lowered as approaching a center position of the arrangement reference circle. A primary air ratio of the air-fuel mixture is in a range of 0.6 to 1.5;
When the stove combustion amount is reduced with respect to the flame mouth, the air-fuel mixture is intermittently supplied, and supply duty ratio adjusting means capable of adjusting the supply duty ratio of the air-fuel mixture is provided. The stove according to any one of claims 1 to 3.   The stove according to any one of claims 1 to 4, wherein a temperature sensor that detects a temperature of the heating object is provided at a center position of the arrangement reference circle.   6. The distributor according to claim 1, wherein a distributor for supplying and supplying the air-fuel mixture to each of the burners is provided on the top plate at a center position of the reference circle. The stove according to one item. In the burner, a distributor for distributing and supplying the air-fuel mixture to each of the burners is provided under the top plate,
The stove according to any one of claims 1 to 5, wherein the distributor is connected to a through pipe that passes through the top plate and is connected to each of the burner members. In the burner, comprising a ring-shaped hollow member through which the air-fuel mixture flows,
The stove according to any one of claims 1 to 7, wherein the hollow member is provided so as to be connected to each of the burner members.   In the burner, the plurality of burner members are integrally configured, and can be rotated in the circumferential direction with the air-fuel mixture supply port provided at a center position of the arrangement reference circle or a position deviating from the center position as a fulcrum. The stove according to any one of claims 1 to 6 and claim 8, wherein the stove is configured.   10. The air-fuel mixture is generated by mixing atmospheric air or air pressurized with a fan and fuel gas having a pressure higher than that of the air using a venturi mixer. The stove according to any one of the above. The stove according to any one of claims 1 to 10, wherein each burner member is arranged with its major axis directed in the radial direction of the arrangement reference circle.   Each burner member is arranged with its major axis rotated by a declination with respect to the radial direction of the arrangement reference circle, or with a constant deviation parallel movement with respect to the tangential direction of the arrangement reference circle The stove according to any one of claims 1 to 11, wherein the stove is arranged as a single unit.   The flame outlet of the burner member is opened toward an end portion side of the burner member in an arrangement direction of the plurality of flame orifices. Stove.   The stove according to any one of claims 1 to 13, wherein the burner member is formed by casting a metal.   The stove according to any one of claims 1 to 14, wherein the burner member is made of a metal material that is not easily discolored by high-temperature oxidation. The burner member is composed of a first member placed on the top plate and a second member placed on the top plate surrounding an upper part and a side part of the first member,
The second member covers a top part of the first member and has a horizontal part having the flame mouth, and a side part extending downward from a part other than the part where the flame mouth is formed in the horizontal part. The stove according to any one of claims 1 to 15, wherein the stove is formed of an integrally formed member. The burner members constituting a single burner are an even number;
The second burner disposed between the first burner member group in which the even number of the burner members are disposed every other circumferential direction of the arrangement reference circle and the burner member constituting the first burner member group. Divided into two groups,
The stove as described in any one of Claims 1 thru | or 16 provided with the combustion amount adjustment means which can adjust separately the combustion amount of the said 1st burner member group and the said 2nd burner member group. The air-fuel mixture supply path inside the burner member includes an inner air-fuel mixture supply path that guides the air-fuel mixture to an inner flame outlet disposed on the side closer to the center position of the arrangement reference circle, and the inner gas mixture supply path than the inner flame mouth. And is divided into an outer mixture supply path that guides the mixture to an outer flame outlet arranged radially outside the arrangement reference circle,
The stove according to any one of claims 1 to 16, further comprising combustion amount adjusting means capable of separately adjusting a combustion amount at the inner flame mouth and a combustion amount at the outer flame mouth.

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