JP5214697B2 - Stove burner - Google Patents

Description

  The present invention relates to a burner for a stove provided in a stove, and more specifically, a burner body supplied with a mixture of fuel gas and primary air, and a burner comprising a cast or forged product installed on the burner body. The present invention relates to a stove burner including a head and a burner cap made of a cast or forged product installed on the burner head.

  Conventionally, as a burner for a stove, the burner cap is made of sheet metal, and the outer peripheral surface thereof is positioned between a plurality of virtues matching parts located in the same direction as a plurality of virtues of the five virtues placed on the top plate of the stove. In addition, there has been known one in which an elongated slit flame opening is formed in the vertical direction from which the air-fuel mixture is ejected (see, for example, Patent Document 1). Here, if the flame mouth is a slit flame mouth, it is possible to prevent a backfire that is likely to occur during a low fire in which the jet speed of the air-fuel mixture decreases.

  Further, in the burner, the virtually matched portion is a flameless mouth portion that does not form a flame mouth in order to prevent the flame from touching the 5 virtue claws and causing incomplete combustion. However, in this case, at the time of ignition, the spark flames on one side in the circumferential direction of the virtually matched portion do not burn well from the slit flame ports on the other circumferential side.

  In this case, it is also conceivable to form a long flame transfer flame port in the circumferential direction connecting the slit flame ports on both sides in the circumferential direction at the virtually matched portion to improve the fire transfer property at the time of ignition. However, when such a flame transfer port is formed in the burner cap made of sheet metal, the virtues mating part is separated from the other parts in a tongue-like shape, and heat deformation is performed so that the virtues mating part is turned up by the heat during combustion. Therefore, it is not feasible.

  By the way, in a stove burner, generally, both the burner head and the burner cap are made of a cast product or a forged product. In such a burner, an annular wall that abuts the other is provided on one of the upper surface outer peripheral portion of the burner head and the lower surface outer peripheral portion of the burner cap, and a flame mouth is formed by a flame mouth groove formed on the annular wall. Therefore, it is also considered that this flame mouth is a slit flame mouth elongated in the vertical direction.

  Here, the depth of the flame groove that can be formed during casting or forging becomes shallower as the groove width becomes narrower. And if the groove depth is shallow, the back flame in the low flame can be prevented, but the length of the slit flame mouth composed of the flame groove is insufficient in the vertical direction. Can no longer be ejected. Therefore, it is also conceivable to form a throat groove having a narrow groove width and a narrow groove depth by cutting after casting or after forging so that the vertical length of the slit throat is not short. However, this requires time and effort for cutting and increases costs.

JP 2000-304213 A

  In view of the above points, the present invention can form a slit flame opening having a sufficient vertical length without requiring cutting after casting or forging of the burner head and the burner cap, and has good fire transfer properties. The challenge is to provide a stove burner.

  The present invention is a burner for a stove provided in a stove, a burner body to which an air-fuel mixture of fuel gas and primary air is supplied, a burner head made of a cast or forged product installed on the burner body, It is equipped with a burner cap made of cast or forged product installed on the burner head, and is the same as a plurality of five virtue claws of five virtues placed on the top plate of the stove at the outer peripheral part between the burner head and the burner cap In order to solve the above-mentioned problem, the following configuration is adopted in order to solve the above-mentioned problem, in which the slit slit is formed in the vertical direction where the air-fuel mixture squirts. Features.

  That is, according to the present invention, a head-side annular wall that extends upward is provided on the outer periphery of the upper surface of the burner head, a cap-side annular wall that extends downward is provided on the outer periphery of the lower surface of the burner cap, It has a flaming groove that forms the lower half of the slit flaring formed during casting or forging of the burner head, and the cap-side annular wall is above the slit flaming formed during burning or forging of the burner cap. A slit groove on one side in the circumferential direction of each virtually matched portion is provided between the end surface of the head-side annular wall and the end surface of the cap-side annular wall. There is a fire transfer flame port that moves from the mouth to the slit flame port on the other side in the circumferential direction, or one of the annular wall of the head side annular wall and the cap side annular wall is notched and inserted into this notched part On the other annular wall to be Between the end face of the extended part of the other annular wall and the bottom face of the notched part of one annular wall, from the slit flame mouth on one side in the circumferential direction of each virtually matched part to the other side in the circumferential direction It is characterized in that there is provided a fire transfer flame outlet for transferring to the slit flame opening.

  According to the present invention, since the flame groove of each annular wall on the head side and the cap side is formed at the time of casting or forging, the depth of the individual flame groove cannot be sufficiently deep. Since the slit flame mouth is constituted by the flame groove of both the annular walls on the side and the cap side, the vertical length of the slit flame mouth can be sufficiently secured. Therefore, it is possible to prevent back-fire during low fire and jet out the air-fuel mixture at the required large flow rate during high fire. As a result, the burner adjustment range (TDR) is widened, and a compact and high-capacity burner is achieved. can get. And since the cutting process of the flame slot after casting or after forging becomes unnecessary, cost reduction can be aimed at.

  Further, in the present invention, since the fire transfer flame opening is provided in the virtually matched portion, at the time of ignition, from the slit flame outlet on one side in the circumferential direction to the slit flame outlet on the other side in the circumferential direction through the flame transfer flame port. It will surely transfer to the fire and the fire transfer will be good.

  In addition, in the virtues matching part, one annular wall of the head side annular wall and the cap side annular wall is notched, and the other annular wall is vertically extended so as to be inserted into the notched part. There are also advantages. That is, if the phase is not such that the extended portion of the other annular wall is inserted into the notched portion of the one annular wall, the burner cap is lifted from the burner head, so that the burner cap can be prevented from being set incorrectly. Further, when the one annular wall is a head-side annular wall and the other annular wall is a cap-side annular wall, the position of the fire transfer flame mouth becomes as low as possible, It is possible to reliably prevent the flame from touching the five virtue nails.

  In addition, when a lower flame outlet is formed at the outer peripheral portion between the burner body and the burner head, the flame outlet (upper flame outlet) formed at the outer peripheral portion between the burner head and the burner cap is formed. ) Is heated by the flame of the lower flame tip, and the back flame at the upper flame tip tends to occur. However, in the present invention, the upper flame mouth is constituted by a slit flame mouth, and backfire can be reliably prevented.

Sectional drawing of the stove which comprises the burner for stove of 1st Embodiment of this invention. The perspective view of the burner for stove of 1st Embodiment. The side view of the burner head and burner cap of the stove burner of 1st Embodiment. Sectional drawing cut | disconnected by the IV-IV line of FIG. Sectional drawing cut | disconnected by the VV line | wire of FIG. (A) The perspective view seen from diagonally downward of the principal part of the burner cap of the stove burner of 1st Embodiment, (b) The perspective view seen from diagonally upward of the principal part of the burner head of the burner for stove of 1st Embodiment. Figure. The side view of the burner head and burner cap of the stove burner of 2nd Embodiment. Sectional drawing cut | disconnected by the VIII-VIII line of FIG. (A) The perspective view seen from diagonally downward of the principal part of the burner cap of the stove burner of 2nd Embodiment, (b) Sectional drawing of the principal part of the burner head and burner cap of the burner for stove of 2nd Embodiment.

  With reference to FIG. 1, A is a stove body, B is a top plate which covers the upper surface of the stove body A, and the stove burner 1 is installed facing the burner opening B1 established in the top plate B. On the top plate B, the virtues C are placed so as to surround the burner opening B1. Then, the cooking container placed on Gotoku C is heated by the burner 1. The virtues C are composed of an annular virtuosity frame C1 and a plurality of virtues claws C2 attached radially to the virtuosity frame C1.

  The burner 1 includes a sheet metal burner body 2 inserted into the burner opening B 1, a burner head 3 made of a metal casting or forging such as brass installed on the burner body 2, and a burner head 3. And a burner cap 4 made of a cast or forged product of a metal such as brass. As shown in FIG. 2, the outer peripheral portion between the burner head 3 and the burner cap 4 is positioned between a plurality of five virtue matching portions 5 located in the same direction as the plurality of five virtue claws C2 of the five virtue C. A plurality of slit flame ports 6 that are elongated in the vertical direction as the flame port are formed at intervals in the circumferential direction, and the lower flame port 7 has a circumferential interval at the outer peripheral portion between the burner body 2 and the burner head 3. A plurality of them are formed.

  The burner body 2 is composed of an inner / outer triple cylinder including an outer cylinder 21, an intermediate cylinder 22 and an inner cylinder 23. The burner head 3 has an annular shape in plan view, and a cylindrical portion 31 fitted to the intermediate cylindrical body 22 of the burner body 2 is suspended from the inner periphery, and a head-side annular wall 32 extending upward from the outer peripheral portion of the upper surface. Further, a lower annular wall 33 that extends downward on the outer peripheral portion of the lower surface and sits on the upper end portion of the outer cylindrical body 21 of the burner body 2 is suspended. The burner cap 4 has a disk shape in a plan view, and a cylindrical portion 41 that is fitted to the inner cylindrical body 23 of the burner body 2 is vertically provided at a portion near the center of the lower surface, and is disposed below the outer peripheral portion of the lower surface. An extending cap-side annular wall 42 is vertically provided.

  With reference to FIGS. 3 and 4, the end surface of the head-side annular wall 32 and the end surface of the cap-side annular wall 42 are in contact with each other in the portions other than the five virtue matching portions 5. Then, a flame opening groove 6a constituting the lower half portion of the slit flame opening 6 is formed on the head side annular wall 32 at the time of casting or forging of the burner head 3, and the burner cap 4 is cast on the cap side annular wall 42. The flame opening groove 6b constituting the upper half of the slit flame opening 6 is formed during or forging. On the other hand, in each of the five virtue matching portions 5, as shown in FIG. 5, the end surface of the head side annular wall 32 and the end surface of the cap side annular wall 42 face each other with a gap in the vertical direction. A longitudinal flame transfer flame port 8 is formed in the circumferential direction connecting the slit flame ports 6 and 6 on both sides in the circumferential direction. Further, the lower annular wall 33 of the burner head 3 is formed with a flame groove that forms the lower flame hole 6L when the burner head 3 is cast or forged.

  The burner cap 4 needs to be set on the burner head 3 in a normal phase in which the flame opening groove 6a of the head side annular wall 32 and the flame opening groove 6b of the cap side annular wall 42 are continuous in the vertical direction. Therefore, as shown in FIG. 6A, the cap-side annular wall 42 is formed with a convex portion 42a that is positioned at one virtually matched portion 5 and protrudes downward, and the head-side annular wall 32 is provided with FIG. As shown in FIG. 6B, a concave portion 32a is formed that is located in the one virtuoso match portion 5 and is recessed downward. Then, the burner cap 4 is phased to the normal phase with respect to the burner head 3 by fitting the convex portion 42a into the concave portion 32a.

Referring to FIG. 2, the burner 1 further includes a first mixing tube 9 ₁ which communicates with the space between the intermediate cylinder 22 and the inner cylinder 23 of the burner body 2, the outer cylinder 21 of the burner body 2 a second mixing pipe 9 ₂ communicating with the space between the intermediate cylinder 22 and. Then, fuel gas and primary air ejected from nozzles (not shown) arranged facing the upstream ends of the first and second mixing tubes 9 ₁ , 9 ₂ are mixed with the mixing tubes 9 ₁ , 9. They are mixed in the _2, mixture from the first mixing tube 9 ₁ through the space between the space and the burner head 3 and the burner cap 4 between the intermediate cylinder 22 and the inner cylinder 23 of the burner body 2 ejected from the slit flame hole 6 and flame diffusion flame hole 8 Te, a space and the outer cylinder 21 between the outer cylinder 21 and the intermediate cylinder 22 of the mixture burner body 2 from the second mixing tube 9 ₂ It is made to eject from the lower flame mouth 7 through the space between the burner head 3.

  The outer cylinder 21 of the burner body 2 is provided with a skirt portion 21a extending downward from the outer periphery of the upper end portion. And the cover ring D which covers the burner opening B1 of the top plate B is extrapolated to the skirt portion 21a so that the infiltration of the spilled juice from the burner opening B1 can be prevented by the cover ring D. In addition, a protrusion C3 is provided at one or a plurality of circumferential positions on the inner periphery of the virtuosity frame C1 of the virtues C, and a notch D1 in which the protrusions C3 are fitted is formed on the outer periphery of the cover ring D. So that you can decide.

  By the way, in a burner provided with a lower crater 7 and an upper crater, the upper crater is heated by the flame of the lower crater 7, and it becomes easy to backfire at the time of low heat when the jet speed of the air-fuel mixture from the upper crater decreases. . However, if the upper flame outlet is formed into a slit flame outlet 6 that is elongated in the vertical direction as in the present embodiment, backfire can be effectively prevented by the flame extinguishing action exhibited by the slit flame orifice 6.

  Here, since the groove width 6a, 6b of each annular wall 32, 42 of the head part side and the cap side has a narrow groove width, the groove depth of the flame hole grooves 6a, 6b that can be formed at the time of casting or forging is small. Limited. However, in this embodiment, since the slit flame opening 6 is constituted by the flame opening grooves 6a and 6b of the annular walls 32 and 42 on the head portion side and the cap side, the vertical length of the slit flame opening 6 is sufficiently large. It can be secured. Therefore, it is possible to prevent backfire during low fire and to blow out the air-fuel mixture at a required large flow rate during high fire. As a result, the burn-up adjustment range (TDR) of the burner 1 is widened, and the burner 1 is compact and has a large capacity. 1 is obtained. And since the cutting process of the flame slot 6a, 6b after casting or after forging becomes unnecessary, the cost can be reduced.

  Furthermore, in this embodiment, since the fire transfer flame port 8 is provided in the five virtue matching portion 5, the ignition from the slit flame port 6 on one side in the circumferential direction of the five virtue matching portion 5 to the slit flame port 6 on the other side in the circumferential direction is performed. The fire is surely transferred through the transfer port 8 and the fire transfer property is also improved. In addition, since the flame transfer port 8 is located in the middle in the vertical direction between the burner head 3 and the burner cap 4 and moves downward from the virtues claw C2, the flame of the transfer port 8 touches the virtues claw C2. Can be effectively prevented.

  Next, a second embodiment shown in FIGS. 7 to 9 will be described. The basic configuration of the second embodiment is not particularly different from that of the first embodiment, and the same members and parts as those of the first embodiment are denoted by the same reference numerals as above. The difference of the second embodiment from the first embodiment is that each of the five virtue matching portions 5 has a cap-side annular shape such that the head-side annular wall 32 is notched and inserted into the notched portion (notched portion) 32b. The wall 42 is extended downward, and the end surface of the extended portion (extension portion) 42b of the cap-side annular wall 42 is opposed to the bottom surface of the notched portion 32b of the head-side annular wall 32 with a vertical gap therebetween, This gap constitutes a longitudinal flame transfer port 8 in the circumferential direction.

  In each of the five virtue matching parts 5, the cap-side annular wall 42 is notched, and the head-side annular wall 32 is extended upward so as to be inserted into the notch, and the end surface of the extension and the bottom of the notch It is also possible to form a fire-flame with a gap between them. However, in this case, the position of the fire-transfer flame port becomes higher than that of the first embodiment, and the flame of the fire-transfer flame port becomes easy to touch the five virtue claws. On the other hand, in 2nd Embodiment, the position of the fire transfer flame opening 8 becomes lower than the position of 1st Embodiment, and it can prevent that the flame of the fire transfer flame opening 8 touches five virtue claws also at the time of a strong fire.

  In the second embodiment, the burner cap 4 is lifted from the burner head 3 unless the phase is such that the extended portion 42b of the cap-side annular wall 42 is inserted into the notch portion 32b of the head-side annular wall 32. An erroneous setting of the burner cap 4 can be prevented. However, the notched portion 32b of the head-side annular wall 32 is formed so as to reach the flame groove 6a on both sides in the circumferential direction of the virtually matched portion 5, so that the cap-side annular wall 42 is within the width of the flame groove 6a. The extended portion 42b may be displaced in the circumferential direction.

  Therefore, in the second embodiment, as shown in FIG. 9 (a), the cap-side annular wall 42 is formed with a convex portion 42c that fills a portion closer to the inner periphery of one flame opening groove 6b and extends downward therefrom. As shown in FIG. 9 (b), the convex portion 42 c is fitted into the flame slot 6 a of the head-side annular wall 32 so that the burner cap 4 can be accurately phased with respect to the burner head 3. . In addition, the convex part 42c is formed so that a gap is secured between the lower end thereof and the bottom surface of the flame port groove 6a so that the flame hole groove 6a into which the convex part 42c is fitted is not blocked. ing.

  In this case, when the burner cap 4 is set on the burner head 3, the extension portion of the cap-side annular wall 42 is inserted before the phase-determining convex portion 42 c is fitted into the corresponding flame groove 6 a of the head-side annular wall 32. 42b begins to be inserted into the cutout portion 32b of the head-side annular wall 32, and the burner cap 4 is phased although it is rough. Since the cutout portion 32b of the head-side annular wall 32 and the extended portion 42b of the cap-side annular wall 42 appear in appearance, the extended portion 42b can be inserted into the cutout portion 32b while visually observing the burner cap 4. Phase setting when setting is easy.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the first embodiment, the five virtue matching portion 5 is provided with the longitudinal flame transfer flame port 8 in the circumferential direction formed by the gap between the annular walls 32 and 42 on the head portion side and the cap side. It is also possible to configure as follows. That is, the end faces of both the annular walls 32 and 42 on the head side and the cap side also come into contact with each other in the five-virtual matching portion 5, and one of the annular walls 32 and 42 positioned in the five-virtual matching portion 5 at the time of casting or forging. A plurality of small grooves are formed on the end face of the annular wall with circumferential intervals, or a plurality of small grooves are alternately formed on the end faces of the annular grooves 32 and 42 in the circumferential direction, and a flame is formed by these small grooves. It is also possible to configure the mouth. However, it is desirable to form a small groove on the end surface of the head-side annular wall 32 in order to keep the fire transfer flame mouth as far as possible from the five virtue claws.

  Moreover, in the said 2nd Embodiment, the circumferential direction comprised by the gap between the end surface of the extension part 42b of the cap side cyclic | annular wall 42 and the bottom face of the notch part 32b of the head side cyclic | annular wall 32 in the morality matching part 5 in the said 2nd Embodiment. The end portion of the extended portion 42b is in contact with the bottom surface of the notched portion 32b so that the end surface of the extended portion 42b and the bottom surface of the notched portion 32b are formed during casting or forging. It is also possible to form a plurality of small grooves on at least one of them with a circumferential interval, and to form a flame transfer flame opening with these small grooves.

  Moreover, although the said embodiment applies this invention to the burner 1 for a stove which has the lower flame mouth 7, this invention is applicable to the burner for a stove which does not have a lower flame mouth similarly.

  A ... Stove body, B ... Top plate, C ... Gotoku, C2 ... Gotoku claws, 1 ... Stove burner, 2 ... Burner body, 3 ... Burner head, 32 ... Head side annular wall, 32b ... Notched part, 4 ... burner cap, 42 ... cap-side annular wall, 42b ... extended part, 5 ... virtually matched part, 6 ... slit flame mouth, 6a, 6b ... flame mouth groove, 7 ... lower flame mouth, 8 ... fire transfer flame mouth.

Claims (4)

A burner for a stove provided in a stove, wherein a burner body to which a mixture of fuel gas and primary air is supplied, a burner head made of a cast or forged product installed on the burner body, and a burner head A burner cap made of a cast or forged product to be installed, and located in the same direction as a plurality of five virtue claws of the five virtues placed on the top plate of the stove on the outer peripheral portion between the burner head and the burner cap In what is located between a plurality of virtues matching parts, and a slit slit is formed in the up and down direction from which the air-fuel mixture spouts,
A head-side annular wall that extends upward is provided on the outer periphery of the upper surface of the burner head, and a cap-side annular wall that extends downward is provided on the outer periphery of the lower surface of the burner cap.
The head-side annular wall has a flame opening groove that forms the lower half of the slit flame mouth formed during casting or forging of the burner head, and the cap-side annular wall is formed during casting or forging of the burner cap. A slit that forms the upper half of the slit slit,
At each Gotoku mating part, between the end face of the head side annular wall and the end face of the cap side annular wall, fire is transferred from the slit port on one side of each Gotoku mating part to the slit port on the other side in the circumferential direction. A stove burner characterized in that it is provided with a flame transfer flame outlet. A burner for a stove provided in a stove, wherein a burner body to which a mixture of fuel gas and primary air is supplied, a burner head made of a cast or forged product installed on the burner body, and a burner head A burner cap made of a cast or forged product to be installed, and located in the same direction as a plurality of five virtue claws of the five virtues placed on the top plate of the stove on the outer peripheral portion between the burner head and the burner cap In what is located between a plurality of virtues matching parts, and a slit slit is formed in the up and down direction from which the air-fuel mixture spouts,
A head-side annular wall that extends upward is provided on the outer periphery of the upper surface of the burner head, and a cap-side annular wall that extends downward is provided on the outer periphery of the lower surface of the burner cap.
The head-side annular wall has a flame opening groove that forms the lower half of the slit flame mouth formed during casting or forging of the burner head, and the cap-side annular wall is formed during casting or forging of the burner cap. A slit that forms the upper half of the slit slit,
In each of the five virtue matching parts, one annular wall of the head-side annular wall and the cap-side annular wall is notched, and the other annular wall is extended vertically so as to be inserted into the notched part. Fire transfer between the end face of the extended part and the bottom face of the cut-out part of one annular wall that causes the fire to transfer from the slit flame outlet on one side in the circumferential direction to the slit flame outlet on the other circumferential side A stove burner characterized in that a flame outlet is provided.   The stove burner according to claim 2, wherein the one annular wall is the head-side annular wall, and the other annular wall is the cap-side annular wall.   The burner for a stove according to any one of claims 1 to 3, wherein a lower flame outlet from which an air-fuel mixture is ejected is formed at an outer peripheral portion between the burner body and the burner head.