JP2007101026A - Stove - Google Patents

Abstract

The present invention relates to a stove using gas or petroleum as a fuel, and an object thereof is to realize a good combustion state and high thermal efficiency by using a burner that forms a flame swirling on an upper surface.
Since the extending direction of the tip portion 32 of the support 7 of the virtues 9 is inclined in the opposite direction with respect to the rotating direction of the swirling flame 4 to which the tip 32 is adjacent, the pan is placed on the support 7. Then, the flame 4a is smoothly discharged from the front end portion 32 of the support body 7 to the rear end portion 31 side, and the collision between the flame 4a and the support body 7 is avoided, and the swirling flame 4 is formed on the upper surface. Taking advantage of the characteristics of the burner 5 to be formed, high thermal efficiency can be ensured by suppressing an increase in CO.
[Selection] Figure 1

Description

  The present invention relates to a stove burner used for a cooker that uses gas or petroleum as fuel.

  There is a conventional stove as shown in Patent Document 1. As shown in FIG. 16 and FIG. 17, there are an outer flame type burner 101 in which a plurality of flame openings 100 are arranged in the circumferential direction, and a plurality of burners 101 extending from the periphery toward the upper side of the burner 101. The five virtues 103 forming the support arms 102 are provided, and the ejection direction of the flame 104 of each flame outlet 100 is disposed at a certain angle in the circumferential direction of the burner 101 with respect to the straight line connecting the center Q of the burner 101 and the flame mouth 100. In addition, the extending direction of each support arm 102 is inclined at a certain angle with respect to the circumferential direction of the burner 101 with respect to the straight line connecting the center Q of the burner 101 and the tip of the support arm 102, and the flame is radially spread. As compared with the case where the flame 104 is ejected, the length of the contact between the flame 104 and the bottom of the pan is increased, the thermal efficiency is improved, and the support arm 102 is positioned between the flame 104 and the flame 104. Is set to a temperature drop of overheating and flame can be prevented.

Another conventional stove is shown in Patent Document 2. As shown in FIG. 18, the five virtue 112 provided with a plurality of claws 111 via a top plate is disposed above the internal flame type burner 110 installed in the main body case. The burner 110 is arranged such that the ejection direction of each flame port 113 is shifted by a certain angle with respect to the straight line toward the center S of the burner 110, and the extension line of the tip of each claw 111 of the virtues 112 is the burner 110. They are arranged radially so as to concentrate on the central S axis.
JP 2003-166718 A JP 2005-61692 A

  However, in the conventional configuration, increasing the length of the flame 104 in contact with the bottom of the pan 105 is intended to improve the thermal efficiency by expanding the heat transfer area to the pan 105. The contact time between 104 and the bottom of the pan 105 inevitably increased, and as a result, unburned components such as CO were likely to increase. Further, the upward flow of the flame 104 due to the combustion heat is provided by inclining the ejection direction of the flame 104 of each flame mouth 100 by a certain angle in the circumferential direction of the burner 101 with respect to the straight line connecting the center Q of the burner 101 and the flame mouth 100. The shape of the actual flame 104 viewed in a plan view, depending on the flow direction of the combustion air from the periphery of the burner 101 along the flame 104, is curved in the inclination direction of the flame mouth 100 as shown in FIG. In some cases, the vehicle may turn in that direction. As a result, the curved flame 104 and the swirling flame 104 are biased to contact one side of the support arm 102, and not only unburned components such as CO are increased, but also the bias of the support arm 102 is biased. In addition, there has been a problem that the cooking heating distribution is not uniform due to deterioration due to overheating and uneven contact of the flame 104 to the bottom of the pan 105. In this conventional configuration, in order to alleviate the increase in CO in particular, it is necessary to improve the combustion by promoting the inflow of combustion air from the surroundings. Improvements such as increasing the distance to the bottom or expanding the combustion air passage at the bottom of the virtues 103 were necessary. As a result, the total amount of air flowing into the flame 104 increased, so that the temperature of the combustion gas near the bottom of the pan 105 decreased, and a remarkable improvement in thermal efficiency could not be expected. Further, in order to suppress the deterioration of the support arm 102, there is a method of increasing the plate thickness of the support arm 102 made of a plate material, but this also involves problems such as an increase in CO and a decrease in thermal efficiency.

  On the other hand, in the other conventional configuration, the internal flame type burner 110 is arranged such that the ejection direction of each flame port 113 is shifted from the straight line toward the center S of the burner 110 by a certain angle. The flame 114 ejected from the flame port 113 becomes an unbroken swirling flame 114 that swirls in the inclination direction of the flame port 113, that is, the counterclockwise rotation direction, and after concentrating on the center while maintaining the swirl state, It diffuses into the surrounding outside air while contacting the claws 111 of the virtues 112. Therefore, when the combustion state is viewed in plan, the swirling flame 114 strongly contacts and collides with one side of the claw 111 of the virtues 112, and the amount of generated CO increases or collides with the claw 111 strongly. Since the flame 114 is scattered in the outside air along the claws 111, it is difficult to secure an effective heat transfer state to the bottom of the pan 115, and it is difficult to improve the thermal efficiency. Furthermore, the virtues 112 have a problem that deterioration is accelerated particularly when the tip of the claw 111 is overheated. In this other conventional configuration, in order to solve these problems, it is necessary to reduce the contact area between the claw 111 of the five virtues 112 and the flame 114. Although there is a method of cutting and shortening the length of the nail 111, there has been a problem relating to usability such that a relatively small-diameter pan cannot be stably placed.

  The present invention solves the above-described conventional problems, and suppresses deterioration due to discharge of unburned components such as CO and overheating of the five virtues when a burner that forms a flame that swirls in a constant circulation direction is used. An object of the present invention is to provide a stove capable of ensuring high thermal efficiency and realizing a uniform cooking overheating distribution at the same time.

  In order to solve the above-mentioned conventional problems, the stove according to the present invention includes a burner that forms a flame that swirls in a constant circumferential direction on the upper surface of the flame opening plate, and a tip portion that is disposed above the burner and that is located at the center of the burner. Equipped with a plurality of stretched supports and a base for fixing the support, each support is integrated with the base to constitute the five virtues, and a straight line connecting the rear end of the support and the center of the burner is used as a base line. A support body is provided in which the extending direction of the front end portion of the support body is inclined in the direction opposite to the circulation direction of the flame close to the front end portion of the support body. The burner includes a burner body having a fuel opening on the upper surface, and a flame mouth plate that is detachably covered with the burner body, and the flame mouth plate is provided radially from the center toward the outer peripheral side. A two-stage convex portion comprising one convex portion and a second convex portion provided above the first convex portion is provided at regular intervals, and a first plane is formed on each of the upper surface of the first convex portion and the upper surface of the second convex portion. And a second flat surface portion, and one rectangular portion of the second convex portion in the longitudinal direction is radially opened from the center of the flame port plate toward the outer peripheral side in a constant circumferential direction. A slit-shaped flame outlet is provided.

With this configuration, a flame that swirls in a certain direction around the burner surface is formed, and when a heated object such as a pan is placed on the support of Gotoku, the flame is tangent to the burner while maintaining the swirling state. It flows in the direction and is discharged to the outside air while contacting the support and the bottom of the pan. At this time, Gotoku uses the straight line connecting the rear end of the support and the center of the burner as the base line, and the extending direction of the front end of the support is opposite to the direction of the flame around the front end of the support. Since the support body inclined in the direction is provided, the flame is smoothly discharged from the front end portion to the rear end portion side of the support body. Therefore, the flame and the support do not reach a collision state, and not only suppress the increase of CO, but also an effective contact state between the flame and the bottom of the pan is obtained as a result, making full use of the features of the flame swirling on the upper surface of the burner High thermal efficiency. In addition, the burner not only provides a two-stage convex portion radially from the center to the outer peripheral side of the flame plate, but also the first flat portion on the upper surface of the first convex portion and the upper surface of the second convex portion, respectively. And the second flat surface portion, the rectangular portion of the first convex portion, the first flat surface portion, the rectangular portion of the second convex portion, and the second flat surface portion are sequentially configured and structurally deformed. Since the slit-shaped flame opening is provided in one rectangular portion of each second convex portion based on this structure, the portion heated by the flame ejected from the immediately preceding slit-shaped flame opening is mainly the second Of the projecting portion of the convex portion of the projecting portion which is not provided with the slit-shaped flame mouth and transitions from the rectangular portion to the second plane portion, and as a result, the area where the slit-shaped flame mouth is heated from behind by the adjacent flame is minimized. can do. Therefore,
Inevitably, the change in the opening size of the slit-shaped flame opening is minimized, and it is possible to maintain the good combustion by suppressing the increase in CO by making the suction air amount and the flame injection angle constant. In particular, since the generation of unburned gas due to the contact between the flame mouth plate and the flame can be minimized, the distance between the flame mouth plate and a heated object such as a pan can be approached, and high thermal efficiency can be realized.

  In the stove of the present invention, Gotoku uses the straight line connecting the rear end of the support and the center of the burner as the base line, and the extending direction of the front end of the support is relative to the flame circulation direction adjacent to the front end of the support. Since the support body inclined in the opposite direction is provided, when the pan is placed on the support body, the flame is smoothly discharged from the front end portion to the rear end portion of the support body, It is possible to avoid the collision with the support and to take advantage of the feature of the burner that forms a flame swirling on the upper surface of the flame opening plate, to suppress the increase in CO and to secure high thermal efficiency.

  The first invention is a burner that forms a flame that swirls in a constant circumferential direction on the upper surface of the flame mouth plate, and a plurality of supports that are disposed above the burner and have their tips extended to the center side of the burner, It is equipped with a base for fixing the support, and each support is integrated with the base to form a virtues, and the extending direction of the front end of the support is defined by using a straight line connecting the rear end of the support and the center of the burner as a base line. By providing the support body inclined in the direction opposite to the flame circulation direction adjacent to the tip of the support body, a flame swirling in a constant circulation direction is formed on the upper surface of the burner, and When an object to be heated such as a pan is placed on the top, the flame flows in the tangential direction of the burner while maintaining a swirling state, and is discharged to the outside air while contacting the support and the bottom of the pan. At this time, Gotoku uses the straight line connecting the rear end of the support and the center of the burner as the base line, and the extending direction of the front end of the support is opposite to the direction of the flame around the front end of the support. Since the support body inclined in the direction is provided, the flame is smoothly discharged from the front end portion to the rear end portion side of the support body. Therefore, the flame and the support do not reach a collision state, and not only suppress the increase in CO, but also an effective heat exchange state between the flame and the bottom of the pan is obtained as a result. It can be used to ensure high thermal efficiency.

  According to a second aspect of the present invention, there is provided a flame that swirls in a constant circulation direction from a plurality of flame openings provided at an inner peripheral portion of a hollow annular body with a flame injection direction inclined at a constant angle with respect to a straight line toward the ring center. A burner to be formed, a plurality of supports disposed above the burner and extending at the tip toward the center of the burner, and a base for fixing the support, each support is integrated with the base to Configured, with the straight line connecting the rear end of the support and the center of the burner as the base line, the extending direction of the front end of the support is inclined in the opposite direction to the circulation direction of the flame adjacent to the front end of the support When the combustion state is viewed from above, the flame becomes a continuous swirling flame that swirls in the direction of the inclination of the flame mouth, and after concentrating near the center while maintaining the swirling state, Diffusion into the surrounding outside air while touching the virtuosity support That. At this time, Gotoku uses the straight line connecting the rear end of the support and the center of the burner as the base line, and the extending direction of the front end of the support is opposite to the direction of the flame around the front end of the support. Since the support body inclined in the direction is provided, the flame is smoothly discharged from the front end portion to the rear end portion side of the support body. Therefore, it is not necessary to cut the tip of the entire support to reduce the contact area between the flame and the support, or to increase the thickness of the support, so that various pans can be stably placed, High thermal efficiency can be secured by making full use of the characteristics of the facing flame.

According to a third aspect of the present invention, the virtues have a structure in which the rear end portion of the support is extended substantially radially from the central base by integrating the front end of the support with the base. Can be mounted on the top plate or the like, not only can ensure a sufficient exhaust space for combustion exhaust from the burner and maintain a good combustion state, When the user cleans these virtues, it is only necessary to slide a cleaning tool such as a scrubber along the support from the central base. Can do.

  According to a fourth aspect of the invention, Gotoku uses not only a wire rod such as a round bar but also a wire rod that can be easily bent into a desired shape by using a wire rod structure as a support. When the flame comes into contact with the support made of the structure, it is less subject to resistance and obstruction to the flame flow than when using the support made of plate material, and maintains a good combustion state and high thermal efficiency. It can be ensured, and can be given to the user of a novel stove appearance image.

  According to a fifth aspect of the present invention, Gotoku uses the straight line connecting the rear end of the support and the center of the burner as the base line, and the extending direction of the front end of the support is relative to the direction of the flame around the front end of the support. In the case where the support body is made of a plate material by providing the support body inclined at a constant angle in the opposite direction, after pressing into a desired shape, the support body is attached to a jig inclined at a constant angle. It can be easily configured by arranging and integrating with the base by fitting or welding, and by using these five virtues, it is possible to realize a stove that ensures high efficiency utilizing the features of the swirling flame.

  According to a sixth aspect of the present invention, Gotoku uses the straight line connecting the rear end of the support and the center of the burner as the base line, and the extending direction of the front end of the support relative to the circulation direction of the flame close to the front end of the support In this way, the flame is smoothly guided along the curved portion of the support, and finally the linear direction connecting the center of the burner along the rear end of the support. Toward, it becomes an updraft and realizes an effective heat exchange state with the pan bottom. Further, since the rear end portion of the support is located on a straight line passing through the center of the burner, positioning when placing a pan or the like is facilitated. Therefore, it is possible not only to maintain a good combustion state and ensure high thermal efficiency, but also to provide a stove excellent in usability.

  According to a seventh aspect of the present invention, a burner includes a burner body having a fuel opening on its upper surface, and a flame mouth plate that is detachably covered with the burner body. A two-stage convex portion comprising a first convex portion provided radially and a second convex portion provided above the first convex portion is provided at regular intervals, on the upper surface of the first convex portion and the upper surface of the second convex portion. Each of the first flat portion and the second flat portion is formed, and one of the rectangular portions in the longitudinal direction of the second convex portion is radially constant from the center of the blister plate toward the outer peripheral side. By providing a slit-like flame opening that opens in the circumferential direction, the rectangular surface of the first convex portion, the first flat surface portion, the rectangular surface of the second convex portion, and the second flat surface portion are sequentially configured. The structure is difficult to deform structurally, and a slit-like flame mouth is provided in one rectangular part of each second convex part based on this structure, so the slit immediately before The portion heated by the flame ejected from the flame outlet is in the vicinity of the intersection of the rectangular surface and the second plane portion where the slit-like flame mouth of the second convex portion is not provided, and as a result, the slit-like flame mouth is adjacent. The area heated from behind by the flame can be minimized. Therefore, the change in the opening size of the slit-shaped flame opening is inevitably minimized, and the good suction combustion amount and the flame ejection angle can be made constant to maintain good combustion. In particular, since the generation of unburned gas due to the contact between the flame mouth plate and the flame can be minimized, the distance between the flame mouth plate and a heated object such as a pan can be approached, and high thermal efficiency can be realized.

  In an eighth aspect of the invention, the burner is formed by rupturing at the same time as molding the second convex portion of the two-stage convex portion of the flame mouth plate, and in the upper and lower opening cross section perpendicular to the longitudinal direction of the slit-shaped flame mouth, The upper end and the lower end of the flaming-flame can be configured to be equal to the second flat portion and the first flat portion, respectively, thereby reducing the number of processing steps and making the slit-flame opening size constant. .

  According to a ninth aspect of the invention, the burner is formed with an infrared radiation film on the surface of the flame mouth plate, thereby radiating heat constantly from the surface of the flame mouth plate during combustion, thereby preventing the flame mouth plate surface from becoming hot. it can.

According to a tenth aspect of the invention, the infrared radiation coating is composed of a heat-resistant hard radiation coating containing titanium, so that heat is constantly radiated from the flame front plate surface during combustion to prevent the flame front plate surface from becoming hot. In addition, it is possible to obtain a highly durable infrared radiation film that can withstand frictional cleaning by the user due to corrosion resistance and high hardness due to the titanium content, and as a result, a burner that is easy to maintain can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a conceptual diagram of a stove burning state according to the first embodiment of the present invention as viewed from above, and FIG. 2 is a case where the support of the five virtue of the stove in the same embodiment is inclined in the flame circulation direction. FIG. 3 is a perspective view of the virtues in the embodiment, FIG. 4 is a longitudinal sectional view of the stove 1 in the embodiment, and FIG. 5 is a stove in the embodiment. FIG. 6 is a developed cross-sectional view of an A-B-C-D cross section of a flame mouth plate of a stove burner and a conceptual diagram of a flame form of the burner plate of FIG. It is a partial expanded sectional view of the infrared radiation film of the flame-mouth plate of the burner of the stove in the embodiment.

  In the figure, the stove 1 is provided with a burner 5 that forms a swirling flame 4 on its upper surface using a fuel such as gas in a stove opening 3 of a top plate 2 made of heat-resistant glass or the like. A metal plate in which six supports 7 made of a metal plate are formed of an annular frame so as to cover from the periphery to the stove opening 3 with a shielding plate 6 and to cover the outer periphery of the shielding plate 6. The five virtues 9 integrated with the base 8 made of are placed on the top plate 2 and configured. The burner 5 is made of a metal having excellent heat resistance, corrosion resistance, and workability such as stainless steel, and a burner main body 13 in which an annular head 11 having a fuel opening 10 on the upper surface and a mixing tube 12 through which a premixed gas flows are integrally formed. And the flame mouth plate 14 covering and fitting the annular head 11 of the burner body 13, the inner peripheral portion of the flame mouth plate 14 and the inner peripheral portion of the burner main body 13 are inserted to prevent gas leakage, and the temperature at the center It is composed of a protective cylinder 16 facing the sensor 15. The protective cylinder 16 has an air port 17 in the vicinity of the fitting portion with the flame port plate 14.

  Similarly, the flame port plate 14 is made of a metal having excellent heat resistance, corrosion resistance, and workability, such as stainless steel, and a first convex portion 18 provided radially from the annular center toward the outer peripheral side, and a first convex portion. Two-stage convex portions 20 constituting the second convex portion 19 provided above the portion 18 are provided at regular intervals in the circumferential direction, and on the upper surface of the first convex portion 18 and the upper surface of the second convex portion 19, The first plane portion 21 and the second plane portion 22 are respectively configured. Further, of the rectangular portions 23 and 24 in the longitudinal direction of the second convex portion 19, the rectangular portion 23 has a radial direction from the annular center of the flame opening plate 14 toward the outer circumferential side and a certain circumferential direction (flaming opening). There is provided a slit-like flame opening 25 that opens in a counterclockwise direction when the plate 14 is viewed from above. Further, the slit-shaped flame mouth 25 is configured by molding the second convex part 19 of the two-stage convex part 20 of the flame-mouth plate 14 and at the same time breaking the upper and lower molds. In the upper and lower opening cross sections perpendicular to the longitudinal direction, the upper end portion 26 and the lower end portion 27 of the slit-shaped flame opening 25 are made to coincide with the second plane portion 22 and the first plane portion 21, respectively.

  On the other hand, the outer peripheral portion of the flame port plate 14 constitutes a cylindrical portion 28 that covers and fits the outer peripheral surface of the annular head portion 11 of the burner body 13, and the lower end portion of the cylindrical portion 28 extends upward from the outer peripheral direction over the entire circumference. It is a flange-like bent portion 29 that is bent into a bent shape. In addition, the lower end part of the inner peripheral part of the flame-mouth plate 14 also has the curling structure bent upward from the inner peripheral direction over the whole periphery.

Further, an infrared radiation coating 30 made of a heat-resistant hard radiation coating containing titanium is baked on the flame mouth plate 14 on the surface of the flame mouth plate 14, particularly the upper surface where the slit-like flame mouth 25 is opened. On the other hand, Gotoku 9 arranges the rear end portions 31 of the six support bodies 7 on the base 8 at equal intervals, and the support body 7 has a straight line connecting the rear end portion 31 and the center O of the burner as a base line. The extending direction of the distal end portion 32 of the support 7 is set to a constant angle α (this embodiment) in the opposite direction with respect to the circumferential direction (counterclockwise as viewed from above) of the swirling flame 4 close to the distal end portion 32. Is about + 20 °). The thus-configured Gotoku 9 is subjected to a surface treatment with a hollow film or a plating film.

  About the stove 1 comprised as mentioned above, operation | movement and an effect | action are demonstrated below.

  A premixed gas flows from the mixing tube 12 of the burner body 13 and is ignited by any method in the vicinity of the slit-shaped flame port 25 of the flame-mouth plate 14 to form a single flame 33a by one slit-shaped flame port 25a. As a result, a single flame 33, 33b is formed by instantaneously transferring from the adjacent slit-shaped flame mouth 25 to the slit-shaped flame mouth 25b, and the combustion state is finally formed on the entire upper surface of the flame mouth plate 14. It is formed. At this time, since the slit-like flame opening 25 is configured in a counterclockwise circumferential direction when viewed from the upper surface of the flame mouth plate 14, a single flame 33 is jetted obliquely upward by an upward airflow due to combustion, In order to eject in a counterclockwise direction as viewed from the upper surface of the flame mouth plate 14, a swirling flame 4 is formed on the upper surface of the flame mouth plate 14.

  In the above combustion state, the combustion air includes secondary air that diffuses into the flame 4 from the periphery of the flame mouth plate 14 and from the air port 17 of the protective cylinder 16 in addition to the primary air contained in the premixed gas. Thus, a stable combustion state is obtained.

  On the other hand, the slit-shaped flame opening 25 is formed by breaking the upper and lower molds at the same time as the second convex portion 19 is molded. The gap L1 is inevitably formed between the upper end portion 26 and the lower end portion 27 of the 25. Therefore, the actual slit opening dimension of the slit-shaped flame opening 25 is the gap L2. At this time, the optimum value of the gap L2 varies depending on the type of fuel gas, but approximately 0.5 to 0.8 mm is appropriate. In the case of natural gas or liquefied petroleum gas, it is possible to ensure the suction performance of combustion air or yellow flame. The gap L2 is optimally in the range of 0.55 to 0.65 mm in order to suppress the generation of the gas. In the case of a fuel gas containing a large amount of hydrogen and having a high combustion rate, the gap L2 is 0 to suppress the flashback phenomenon. A range of .45 to 0.55 mm is optimal.

  Further, the gap L1 is closely related to the ejection angle θ of the flame 33. When the gap L1 is close to 0 mm, the ejection angle θ of the flame 33 becomes small, and contact with the adjacent single flame 33a and flame 33b. And the diffusion of the combustion air from the outside air may be insufficient, or the contact area between the surface of the flame mouth plate 14 and the single flame 33 may be increased, and the flame mouth plate 14 may be overheated.

  On the other hand, when the gap L1 is larger than necessary, the ejection angle θ of the single flame 33 becomes large, and the single flame 33 comes into contact with the bottom of the pan or the like before the combustion of the single flame 33 is completed. , Unburned gas emissions may increase. Therefore, in order to appropriately maintain the ejection angle θ of the single flame 33 and ensure a good combustion state, it is necessary to appropriately manage the range of the gap L1. The appropriate range of the gap L1 is 0.1 to 0.4 mm, but in the present invention, the optimum value of the gap L1 is set to a range of 0.2 to 0.3 mm, and the single flame 33 at this time is set. Is in a range of 30 to 45 ° and maintains a good combustion state.

  The flame port plate 14 includes a first flat surface portion 21 of the two-stage convex portion 20, a rectangular portion 24 not provided with the slit-shaped flame port 25, and a second flat surface portion 22 configured in a continuous and stepped manner. Therefore, the portion heated by the single flame 33a ejected from the immediately preceding slit flame opening 25a is mainly from the rectangular portion 24 where the slit-like flame opening 25 of the second convex portion 19 is not provided. In the vicinity of the projecting portion R that moves to the flat portion 22, as a result, the area heated from behind by the contact area between the single flame 33 a and the flame mouth plate 14 can be minimized.

Further, in the combustion state, thermal expansion is inevitably generated in the flame mouth plate 14, but the first flat portion 21 of the two-stage convex portion 20, the rectangular portion 24 not provided with the slit-like flame opening 25, and the first The second flat portion 22 is formed in a continuous and stepped manner, and structurally suppresses deformation due to thermal expansion, so that the change in the opening size of the slit-shaped flame opening 25 is suppressed to a level that does not affect the combustion state. be able to.

  Moreover, the outer peripheral part of the flame-mouth plate 14 becomes the cylindrical part 28 which coat | covers and fits the outer peripheral surface of the cyclic | annular head part 11 of the burner main body 13, and the lower end part of the cylindrical part 28 is flange-like over the perimeter. Since it comprises the bending part 29, it suppresses that the cylindrical part 28 expands outside by thermal expansion, and the fitting state of the annular head 11 and the cylindrical part 28 of the burner main body 13 is favorable. It is possible to prevent leakage of fuel gas and the like.

  Furthermore, since the infrared radiation film 30 by the heat resistant hard radiation coating containing titanium is baked on the surface of the flame mouth plate 14 where the slit-like flame mouth 25 is open, the surface of the flame mouth plate 14 The surface temperature can be lowered by preventing heat storage at the bottom, and as a result, the thermal expansion of the flame mouth plate 14 can be suppressed and the change in the opening size of the slit-like flame mouth 25 can be minimized.

  Titanium contained in the component of the infrared radiation coating 30 has an effect of increasing the hardness of the infrared radiation coating 30 itself to a pencil hardness of about 8-9H and heat resistance. Even if it becomes dirty due to adhesion of boiled juice, durability to friction cleaning is obtained, and the burner 5 is excellent in care. Therefore, it is difficult to be structurally deformed even in the combustion state, and it is possible to maintain a good combustion state by making the intake air amount and the ejection angle θ of the single flame 33 constant.

  On the other hand, when the pan 34 is placed on the support 7 of the five virtues 9 provided above the burner 5, the swirling flame 4 in contact with the bottom of the pan 34 and the flow shape of the combustion exhaust gas thereof are in the circumferential direction. Along the bottom of the pan 34 and diffused to the surroundings. At this time, the support body 7 of the virtues 9 has a swirling flame 4 close to the front end portion 32 in the extending direction of the front end portion 32 of the support body 7 with the straight line connecting the rear end portion 31 and the center O of the burner as the base line. Is inclined at a constant angle α (about + 20 ° in the present embodiment) in the opposite direction with respect to the rotation direction (counterclockwise as viewed from above). The support 7 dissipates smoothly from the front end 32 to the rear end 31 side, and the flame 4a and the support 7 do not reach a collision state. Therefore, the flame 4a and its combustion exhaust gas diffuse into the outside air while reliably contacting the bottom and wall surface of the pan 34. In addition, the inclination angle α is set to about + 20 ° in the present embodiment, but from the viewpoint of securing an effective contact state with the flame 4 and the flame 4a on the pan 34 and stable placement of the pan 34. A range of +10 to 30 ° is suitable.

  On the other hand, as shown in FIG. 2, with the straight line connecting the rear end portion 31b of the support body 7b and the center O of the burner as the base line, the extending direction of the front end portion 32b of the support body 7b is a swirling shape close to the front end portion 32b. When tilted at a constant angle β (about −20 ° in the present embodiment) in the same direction as the circumferential direction of the flame 4 (counterclockwise when viewed from above), the flame 4b contacting the support 7b is supported Since it collides in the state because it is almost right next to the vicinity of the front end portion 32b of the body 7b, it diffuses to the rear end portion 31b side. In this case, the flame 4b and the combustion exhaust gas flow that collided with the support 7b flow into the outside air with the momentum at the time of the collision, so there is also an increase in unburned gas such as CO, and at the same time, Contact is inadequate. As described above, in the case where the extending direction of the tip portions 32 and 32b is inclined in the opposite direction and the same direction as the circulation direction of the flame 4 as in the support bodies 7 and 7b, the heat exchange state to the pan 34 is given. The effect is quite different. As described above, according to the stove according to the present embodiment, the burner plate 14 is less likely to be deformed structurally and thermally, and the combustion of the burner 5 that can maintain a good combustion state with little CO emission or the like. Since the swirl-shaped flame 4 can be formed in a certain circumferential direction on the upper surface, and an effective heat exchange state between the flame 4 and the pan 34 can be maintained, high thermal efficiency can be ensured by fully utilizing the features of the swirl-shaped flame 4. The stove 1 that can be realized.

(Embodiment 2)
FIG. 8 is a conceptual diagram of the stove combustion state in the second embodiment of the present invention as viewed from above, and FIG. 9 is a longitudinal sectional view of the stove in the same embodiment.

  In the figure, the difference from the first embodiment is that the virtue 41 of the stove 40 has three support bodies 44 with a short distance between the front end portion 42 and the rear end portion 43 alternately arranged between the three support bodies 7. And the extending direction of the support 44 is located on a straight line passing through the center O of the burner 5.

  Note that components having the same reference numerals as those in Embodiment 1 have the same structure, and description thereof is omitted.

  About the stove 40 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Similarly to the first embodiment, when the swirling flame 4 is formed on the upper surface of the burner 5 and the pan 34 is placed on the virtues 41, the flame 4 a contacting the support body 7 becomes the tip of the support body 7. The flame 4a and the support 7 do not collide with each other, and the flame 4a and its combustion exhaust gas reliably contact the bottom and wall surface of the pan 34. While diffusing in the open air.

  On the other hand, the flame 4c in the vicinity of the support body 44 has a short distance between the front end portion 42 and the rear end portion 43 of the support body 44. Similarly, it diffuses into the outside air while reliably contacting the bottom and wall surface of the pan 34. Therefore, the amount of heat exchange between the flame 4 and the pan 34 can be increased. Further, since three support bodies 44 having short distances between the support body 7, the front end portion 42 and the rear end portion 43 are alternately arranged, the support body 7 can support the pot 35 when the diameter of the pot 35 is small. Even if the shape of the bottom of the base plate is slightly deformed, the pan 34 can be stably held by always contacting the support body 44 or the support body 7. As described above, according to the stove 40 of the present embodiment, the heat transfer amount from the flame 4, the flame 4a, and the flame 4c to the pan 34 is increased to ensure high thermal efficiency, and at the same time, various pans can be stably used. It can be mounted on.

(Embodiment 3)
FIG. 10 is a conceptual view of the combustion state of the stove in the third embodiment of the present invention as viewed from above.

  In the figure, the difference from the first embodiment is that the virtues 51 of the stove 50 have a straight line connecting the rear end portion 53 of the support body 52 and the center O of the burner 5 as the base line, and the extending direction of the front end portion 54 of the support body 52 Is configured in a curved direction 55 that is curved in the direction opposite to the circulation direction of the flame 4 in the vicinity of the tip 54.

  Note that components having the same reference numerals as those in Embodiment 1 have the same structure, and description thereof is omitted.

  About the stove 50 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  As in the first embodiment, when the swirling flame 4 is formed on the upper surface of the burner 5 and the pan 34 is placed on the virtues 51, the flame 4d is smooth without resistance along the curved portion 55 of the support 52. In the direction of the straight line connecting the center O of the burner 5 along the rear end portion 53 of the support body 52, it becomes an updraft and realizes an effective heat exchange state with the pan 34. Further, since the rear end portion 53 of the support body 52 is located on a straight line passing through the center O of the burner 5, positioning when placing the pan 34 on the virtues 51 is facilitated. Therefore, it is possible to provide a stove 50 that not only maintains a good combustion state and ensures high thermal efficiency but also has excellent usability.

(Embodiment 4)
FIG. 11 is a conceptual diagram of the combustion state of the stove according to the fourth embodiment of the present invention as viewed from above, and FIG. 12 is a longitudinal sectional view of the stove according to the same embodiment.

  In the figure, the difference from the first embodiment is that the virtues 61 of the stove 60 are configured by integrating the tip end portion 63 of the support body 62 with the base 64 formed of an annular frame, and the rear end of the support body 62 The lower part of the part 65 is placed on the top plate 2.

  Note that components having the same reference numerals as those in Embodiment 1 have the same structure, and description thereof is omitted.

  About the stove 60 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  As in the first embodiment, when the swirling flame 4 is formed on the upper surface of the burner 5 and the pan 34 is placed on the virtues 61, the flame 4 e that contacts the support body 62 becomes the tip of the support body 62. Dissipate smoothly from the portion between 63 and the rear end portion 65 toward the rear end portion 65 side. Therefore, the flame 4e and its combustion exhaust gas realize an effective heat exchange state with the pan 34. When the virtues 61 are mounted on the stove 60, the rear end portion 65 of the support 62 is placed on the top plate 2 or the like, so that a sufficient exhaust space for combustion exhaust from the burner 5 is ensured and good combustion is achieved. In addition to maintaining the state, when the user cleans the Gotoku 61, it is only necessary to slide a cleaning tool such as a scrubber along the support body 62 from the base 64, reducing damage to the cleaning tool, The virtues 61 can be easily washed.

(Embodiment 5)
FIG. 13 is a conceptual diagram of the stove burning state according to the fifth embodiment of the present invention as viewed from above, and FIG. 14 is a longitudinal sectional view of the stove according to the same embodiment.

  In the figure, the difference from the first embodiment is that the five virtues 71 of the stove 70 have the support member 72 made of a wire member 73 made of a metal round bar.

  Note that components having the same reference numerals as those in Embodiment 1 have the same structure, and description thereof is omitted.

  About the stove 70 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  As in the first embodiment, when the swirling flame 4 is formed on the upper surface of the burner 5 and the pan 34 is placed on the virtues 61, the flame 4f that comes into contact with the support 72 is formed by using the plate for the support 72. Compared with the case where it comprises, it is less likely to receive the resistance and obstruction with respect to the flow of the flame 4f, and it can maintain a favorable combustion state and can ensure high thermal efficiency. In addition, since the wire structure 73 is used, it can be easily bent into a desired shape, and can also be provided to a novel appearance image user of the stove 70.

(Embodiment 6)
FIG. 15 is a conceptual view of the combustion state of the stove in the sixth embodiment of the present invention as viewed from above.

In the figure, the stove 80 is provided with a plurality of flame openings 82 inclined at a constant angle γ (in the present embodiment) with respect to a straight line directed to the annular center on the inner peripheral portion of the hollow annular body 81, The five virtues 85 are provided above the burner 84 that forms the swirling inward flame 83 in a constant circulation direction (in this embodiment, counterclockwise when viewed from the top). The five virtues 85 are formed by attaching three support bodies 89 having a short distance between the front end portion 87 and the rear end portion 88 to a base 86 formed of an annular frame that shields the flame opening 82 of the burner 84 from above. The support body 90 is alternately arranged, and the extending direction of the support body 89 is positioned on a straight line passing through the center P of the burner 84. The support body 90 has a straight line connecting the rear end portion 91 and the center P of the burner. As a base line, the extending direction of the distal end portion 92 of the support 90 is set at a constant angle η (about + 20 ° in the present embodiment) in the opposite direction to the circumferential direction of the swirling flame 82 adjacent to the distal end portion 92. Inclined.

  The operation and action of the stove 80 configured as described above will be described below.

  When ignited by any method in the vicinity of the flame opening 82, a swirling inward flame 83 is formed in a constant circumferential direction (counterclockwise) in the inner circumferential space of the hollow annular body 81 provided with the flame opening 82. The The inward flame 83 turns into a continuous inward flame 83 while turning in the inclination direction of the flame port 82, and after concentrating near the center while maintaining the turning state, comes into contact with the pan bottom and the supports 89 and 90 of the virtues 85. It diffuses into the surrounding outside air. At this time, the flame 83a in contact with the support 90 is diffused smoothly from the front end 92 to the rear end 91 side of the support 90, and the flame 83a and the support 90 do not reach a collision state. The flame 83a and its combustion exhaust gas diffuse into the outside air while reliably contacting the bottom and wall surface of the pan. On the other hand, the flame 83b in the vicinity of the support 89 has a short distance between the front end portion 87 and the rear end portion 88 of the support 89, and thus is hardly obstructed, and almost two combustion exhaust gas flows through the support 89. Similarly, it diffuses into the outside air while reliably contacting the bottom and wall surface of the pan. Therefore, the amount of heat exchange between the flame 83, the flame 83a, the flame 83b, and the pan can be increased. Therefore, it is not necessary to shorten all the supports to reduce the contact area between the flame 83 and the support or to increase the thickness of the support as in the conventional case, and various pans can be stably placed. The thermal efficiency can be ensured by making full use of the features of the swirling inward flame 83.

  As described above, the stove of the present invention can be widely applied not only to cooking appliances used for home and commercial kitchens but also to leisure cooking appliances such as camping goods.

The conceptual diagram which looked at the combustion state of the stove in Embodiment 1 of this invention from the upper surface The conceptual diagram which looked at the combustion state at the time of making the support body of the five virtue of the stove in the same embodiment incline in the circulation direction of a flame from the upper surface Perspective view of five virtues in the same embodiment Vertical sectional view of a stove in the same embodiment Top view of the flame mouth plate of the stove burner in the same embodiment Development sectional view of cross section A-B-C-D of a flame mouth plate of a stove burner and a conceptual diagram of a flame form in the same embodiment Partial enlarged sectional view of the infrared radiation film of the flame mouth plate of the stove burner in the same embodiment The conceptual diagram which looked at the combustion state of the stove in Embodiment 2 of this invention from the upper surface Vertical sectional view of a stove in the same embodiment The conceptual diagram which looked at the combustion state of the stove in Embodiment 3 of this invention from the upper surface The conceptual diagram which looked at the combustion state of the stove in Embodiment 4 of this invention from the upper surface Vertical sectional view of a stove in the same embodiment The conceptual diagram which looked at the combustion state of the stove in Embodiment 5 of this invention from the upper surface Vertical sectional view of a stove in the same embodiment The conceptual diagram which looked at the combustion state of the stove in Embodiment 6 of this invention from the upper surface Partial cross-sectional view from the top of the flame opening of a conventional stove burner Conceptual view of the combustion state of the conventional stove viewed from above Conceptual view of the combustion state of another conventional stove as seen from above

Explanation of symbols

1, 40, 50, 60, 70, 80 Stove 4, 4a, 4b, 4c, 4d, 4e, 4f, 83, 83a, 83b Flame 5, 84 Burner 7, 7b, 44, 52, 62, 72, 89, DESCRIPTION OF SYMBOLS 90 Support body 8,64,86 Base 9,41,51,61,71,85 Five virtues 10 Fuel opening part 13 Burner main body 14 Flame port plate 18 1st convex part 19 2nd convex part 20 Two-stage type convex part DESCRIPTION OF SYMBOLS 21 1st plane part 22 2nd plane part 23, 24 Rectangular part 25, 25a, 25b Slit-like flame mouth 26 Upper end part of slit-like flame mouth 27 Lower-end part of slit-like flame mouth 30 Infrared radiation film 31, 31b, 43, 53, 65, 88, 91 Rear end portion of support 32, 32b, 42, 54, 63, 87, 92 Front end portion of support 55 Curved portion 73 Wire material structure 81 Hollow annular body 82 Flame port

Claims (10)

A burner that forms a flame that swirls in a constant circumferential direction on the upper surface of the flameneck plate, a plurality of supports that are arranged above the burner and have their tips extended to the center of the burner, and a base that fixes the support Each support is integrated with the base to form a virtues, and the extension direction of the tip of the support is defined by the straight line connecting the rear end of the support and the center of the burner as the base line. A stove that is tilted in the opposite direction to the direction of the flame around the flame. A burner for forming a flame swirling in a constant circumferential direction from a plurality of flame openings provided on the inner peripheral portion of the hollow annular body by inclining a flame ejection direction at a constant angle with respect to a straight line directed toward the annular center; A plurality of supports that are disposed above the center of the burner and have a base extending to the center side of the burner, and a base for fixing the support. A stove in which the straight line connecting the rear end portion and the center of the burner is used as a base line, and the extending direction of the front end portion of the support body is inclined in the opposite direction with respect to the circulation direction of the flame close to the front end portion of the support body. The cooker according to claim 1 or 2, wherein the virtues are integrated with the base of the tip of the support. The five virtues are the stove according to any one of claims 1 to 3, wherein the support is a wire constituting body. Gotoku uses a straight line connecting the rear end of the support and the center of the burner as a base line, and the extending direction of the front end of the support is constant in the direction opposite to the direction of the flame around the front end of the support. The stove according to any one of claims 1 to 4, further comprising a support body inclined at an angle. Gotoku uses the straight line connecting the rear end of the support and the center of the burner as the base line to curve the extending direction of the front end of the support in the opposite direction to the direction of the flame around the front end of the support. The stove according to any one of claims 1 to 4, further comprising a support. The burner includes a burner body having a fuel opening on the upper surface, and a flame mouth plate that is detachably covered with the burner body. The flame mouth plate is a first radially provided from the center toward the outer peripheral side. Two-stage convex portions constituting the convex portion of the first convex portion and the second convex portion provided thereabove are provided at regular intervals, and the first flat portion is provided on the upper surface of the first convex portion and the upper surface of the second convex portion And a second flat surface portion, and one rectangular portion in the longitudinal direction of the second convex portion is radially opened from the center of the flame plate toward the outer peripheral side in a constant circumferential direction. The stove of Claim 1 which provided the slit-shaped flame opening. The burner is formed by rupturing at the same time as molding the second convex part of the two-stage convex part of the flame mouth plate, and in the upper and lower opening cross section perpendicular to the longitudinal direction of the slit flame flame, the upper end of the slit flame flame The stove according to claim 7, wherein the lower end and the lower end coincide with the second plane and the first plane, respectively. The stove according to claim 7 or 8, wherein the burner has an infrared radiation film formed on the surface of the flame mouth plate. The stove according to claim 9, wherein the infrared radiation coating is composed of a heat-resistant hard radiation coating containing titanium.

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