JP5279292B2 - Comrobana - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve durability by effectively preventing deformation and melting caused by a temperature rise, even with respect to a die-cast product. <P>SOLUTION: In a cooking stove burner 1, a burner body 2 is manufactured by die-cast molding independently from a mixing tube 3, the mixing tube 3 is a press-molded article of a metallic plate, and a lower plate 21 of a tip portion 24 of the mixing tube 3 is connected with a screw hole 9 of an inner cylinder 5 of the burner body 2 by a screw 32. Further a wall portion 11 for mounting to a cocking stove side, is extended at an outer side of an outer cylinder 4 of the burner body 2 on a concentric circle, and an outer rib 17 radial in a plane view is disposed between an outer periphery of the outer cylinder 4 and an inner periphery of the wall portion 11. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a stove burner used for a built-in stove, a table stove, or the like.

  As disclosed in Patent Documents 1 and 2, the stove burner has a ring-shaped mixing chamber inside, and a burner body on which a disk-shaped burner head is placed on the upper surface, and projects from the burner body in the radial direction. It is made of aluminum die-casting equipped with a mixing tube, and is set in a body such as a built-in stove and used with a burner body protruding through a through hole provided in the top plate. Further, in the literatures 1 and 2, the upper part of the burner head is formed in a small through hole by removing the saucer provided between the through hole and the burner body so that the spilled simmered broth can be easily cleaned. Only an exposed portion is provided, or an extending portion that fits into the through hole is provided on the outer peripheral portion of the burner body.

JP 2006-29720 A JP-A-10-153305

  In a stove burner, a so-called back combustion in which a flame is formed in the burner body may be caused by clogging dust in the flame hole or by assembling the burner head at an incorrect position on the burner body. In this case, if the stove burner is made of aluminum die casting as in Patent Documents 1 and 2, there is a risk that the temperature of the burner body rises and deforms or melts.

  Therefore, an object of the present invention is to provide a stove burner having high durability, which can effectively prevent deformation and melting due to temperature rise even if it is made of die casting.

In order to achieve the above object, the invention according to claim 1 is characterized in that a mixing chamber is provided, a cylindrical burner body on which the burner head is placed on the upper surface, a radial projecting from the burner body, and mixing Ri Do from the fuel gas and the mixing tube for supplying the mixture of the combustion air into the chamber, a stove burner is interposed a packing between the burner body and the mixing tube, the outside of the burner body, stove side The wall part whose lower end is located below the lower end of the burner body is concentrically extended, and at least the burner body is manufactured by die casting, and the outer periphery of the burner body and the inner periphery of the wall part provided plan view radial ribs between the lower end of the rib, the coupling portion between the lower end of the connecting portion and the wall portion of the lower end of the burner body becomes horizontal, stepped between the horizontal plane is connected by inclined surfaces It is characterized by having a shape .
Invention according to claim 2, in the configuration of claim 1, the burner body, having an inner tube of a concentric inwardly, in the which forms a mixing chamber between the inner tube, as well In order to effectively prevent deformation and melting, radial ribs in plan view are provided between the inner periphery of the burner body and the outer periphery of the inner cylinder.

According to the first aspect of the present invention, the use of the ribs can effectively prevent deformation and melting due to temperature rise even when the product is die-cast, and a highly durable burner can be obtained.
Further , even when the wall portion is provided, the hot water flow between the burner body and the wall portion is favorably performed via the rib during die casting.
Furthermore, it is possible to effectively prevent the corrosion of the packing due to the broth or the like.
According to the second aspect of the present invention, in addition to the effect of the first aspect , even when the inner cylinder is provided, deformation and melting can be effectively suppressed and a good hot water flow can be maintained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing an example of a stove burner, and FIG.
This stove burner 1 has a mixing chamber 6 inside, a burner body 2 on which a burner head (to be described later) is mounted on the upper surface, projects radially from the burner body 2, and enters the mixing chamber 6 for fuel gas and combustion. Although the point provided with the mixing pipe | tube 3 which supplies the air-fuel mixture with air is the same as that of the past, it has a structure where both are produced separately and assembled | attached here.

First, the burner body 2 is a molded product by aluminum die casting, and as shown in FIG. 3, the burner body 2 includes an outer cylinder 4 and an inner cylinder 5 positioned concentrically inside the outer cylinder 4. , 5 is formed with a ring-shaped mixing chamber 6 whose top and bottom are open. The upper surface of the outer cylinder 4 is a mortar-shaped flame hole forming surface 7 on which the burner head is placed.
Further, between the outer cylinder 4 and the inner cylinder 5, a plurality of inner ribs 8, 8... Connecting the both are provided so as to be radial from the outer surface of the inner cylinder 5. Here, the lower end of the inner cylinder 5 has a length that protrudes downward from the lower end of the outer cylinder 4, and the lower surface of the inner cylinder 5 has four screw holes 9, 9,. The tube 5 is formed so as to protrude slightly toward the center side.

Furthermore, a ring-shaped upper flange 10 is provided around the upper end of the outer cylinder 4, and the outer periphery of the upper flange 10 is located concentrically with the outer cylinder 4, and the lower end is below the lower end of the outer cylinder 4. And the cylindrical wall part 11 located above the lower end of the inner cylinder 5 is provided in the circumference. An ignition electrode and a thermocouple provided in a container such as a built-in stove are accommodated between the outer cylinder 4 and the wall portion 11, and the accommodated ignition electrode and thermocouple are accommodated in the upper flange 10. The through holes 12 and 12 are formed so as to protrude upward.
In addition, the wall portion 11 is formed with a pair of notches 13 and 13 that are open symmetrically from the lower end to the middle position in the vertical direction, and is formed symmetrically with the wall portion including the opening edge of the notches 13 and 13. A flange is formed on the entire circumference of the lower end of 11. Of these, the point-symmetrical portion located at the lowermost end excluding the notches 13 and 13 is the mounting flanges 14 and 14 on the body side, and the upper edge portions of the notches 13 and 13 that are higher than the mounting flanges 14 and 14 are The positioning flanges 15 and 15 are in contact with the back surface of the top plate when attached to the container. Each mounting flange 14 is provided with mounting holes 16, 16,.

Reference numerals 17, 17... Are radial ribs provided between the outer cylinder 4 and the wall portion 11 to connect the two, and are wall portions in which mounting flanges 14, 14 are formed from the outer surface of the outer cylinder 4. A pair of points is arranged symmetrically with respect to the 11 portions. At the lower end of each outer rib 17, the connecting portion with the lower end of the highest outer cylinder 4 and the connecting portion with the lower end of the lowest wall portion 11 become horizontal planes 17a and 17b, respectively, and an inclined surface is formed between both horizontal planes 17a and 17b. It has a stepped shape connected by 17c.
In addition, a ring-shaped step portion 18 projecting downward is provided on the inner peripheral side of the lower surface of the outer cylinder 4, and the inner peripheral surface is continuous with the step portion 18 and below the step portion 18. Three projections 19, 19,... Projecting in the circumferential direction are formed at equal intervals in the circumferential direction.

  On the other hand, the mixing tube 3 is supplied with fuel gas and combustion air as shown in FIG. 4 by press-molding an upper plate 20 and a lower plate 21 made of stainless steel and caulking and joining the outer peripheral edges. A mortar-shaped throat portion 22, a mixing portion 23 provided coaxially with the throat portion 22, and a tip portion 24 connected to the burner body 2 connected to the end of the mixing portion 23. Are integrally formed. A flat placement surface 25 on which the outer cylinder 4 of the burner body 2 is placed via a ring-shaped rubber packing 26 is formed on the upper plate 20 that forms the distal end portion 24. A communication hole 27 into which the stepped portion 18 of the placed outer cylinder 4 can be fitted is formed. In this mounted state, the tip 24 and the mixing chamber 6 of the burner body 2 are communicated.

  Further, when the outer cylinder 4 is mounted on the mounting surface 25, the inner cylinder 5 passes through the communication hole 27 and comes into contact with the lower plate 21. A through hole 28 having a shape matching the lower end opening including the hole 9 is formed, and four through holes 29, 29... Corresponding to the screw holes 9 are formed at equal intervals in the circumferential direction on the periphery of the through hole 28. ing. Reference numeral 30 denotes a mounting ring provided on the lower surface of the lower plate 21 at the tip 24 and having the same inner peripheral shape as the through hole 28. Similarly, four through holes 31, 31,... Corresponding to the screw holes 9 are provided in the circumferential direction. Are formed at equal intervals. That is, the lower plate 21 is screwed to the inner cylinder 5 by passing through the through holes 31 and 29 from below the mounting ring 30 and screwing the screws 32, 32... Into the screw holes 9 of the inner cylinder 5, respectively. is there.

In the stove burner 1 configured as described above, the outer cylinder 4 of the burner body 2 is mounted on the mounting surface 25 of the distal end portion 24 of the mixing tube 3 through the rubber packing 26 as described above, and the mounting ring As shown in FIG. 2, the burner body 2 and the mixing tube 3 are connected by screwing the screw 32 into the screw hole 9 of the inner cylinder 5 from below, but the mixing tube for the screw hole 9 of the inner cylinder 5 is connected. By changing the position of the three through holes 29, the projection angle of the mixing tube 3 with respect to the burner body 2 in a plan view can be selected every 90 °.
Therefore, the same stove burner 1 can be used corresponding to the layout on the stove side by changing the direction of the mixing tube 3. In addition, a plurality of types with different phases of the through holes 29 provided in the tip 24 instead of a single mixing tube 3 can be prepared, and even if only the mixing tube 3 is replaced, it can be used corresponding to the layout on the stove side. It becomes.

  As shown in FIG. 5, the burner head 33 expands upward at the upper end of a cylinder 34 that can be fitted to the inner cylinder 5 of the burner body 2, and radial ribs 36, 36 on the outer periphery of the lower surface. .. A configuration in which a plurality of widened portions 35 projecting at predetermined intervals is formed, and a disk-like cap 37 is screwed and supported above the widened portion 35 so that the cylindrical body 34 is inserted into the inner tube 5 and widened. When the rib 36 of the part 35 is placed on the flame hole forming surface 7 of the outer cylinder 4 of the burner body 2, a plurality of flame holes 38, 38 communicating with the mixing chamber 6 between the expanded part 35 and the outer cylinder 4. .. are formed radially. Reference numeral 39 denotes an ignition electrode, and reference numeral 40 denotes a thermocouple, which are assembled between the outer cylinder 4 and the wall portion 11 so that the upper end protrudes from the through hole 12.

FIGS. 6 and 7 show examples in which the stove burners 1 and 1 are used on the left and right sides of the three-side built-in stove 50, respectively. However, here, the screw hole 9 on the burner body 2 side and the through hole 29 on the mixing tube 3 side are formed with a phase shifted by approximately 45 ° from the position described with reference to FIG.
A burner base 52 is provided in the body 51, and the stove burner 1 is attached to the burner base 52. However, since the positions of the ignition electrode 39 and the thermocouple 40 that are electrically connected to the control circuit in the container 51 are fixed, the direction of the burner body 2 is fixed on both the left and right sides, but provided on the front panel 53 side. Since the position of the ignition mechanism 54 to be changed is different, the direction of the mixing tube 3 with respect to the burner body 2 is different on the left and right. Therefore, here, by changing the protrusion angle of the mixing tube 3 with respect to the burner body 2 by 90 °, the same type of the burner 1 can be used on the left and right.

  Further, in the built-in stove 50, as shown in FIG. 8, in the back-side stove burner 1a, as with the stove burner 1, a burner body 2a that is a molded product of aluminum die-casting and an aluminum press-molded product are used. It is formed by assembling a certain mixing tube 3a. Accordingly, the same components as those of the stove burner 1 are denoted by the same reference numerals and redundant description is omitted, but here, by providing three screw holes 9 in the inner cylinder 5, the mixing tube 3a protrudes every 120 °. It differs from the stove burner 1 in that the angle can be changed and a protrusion 41 that is the lowest position is provided at the outermost end of the lower surface of the outer rib 17.

  In the assembled state of the stove burners 1 and 1a, the upper portions of the burner main bodies 2 and 2a project through the top plate 55 through the through holes provided in the top plate 55, and the positioning flange 15 of the burner main bodies 2 and 2a The burner body 2 is positioned on the back side of the plate 55. A seal ring 56 is fitted to the inner edge of the through hole of the top plate 55, and a cover ring 58 integrated with the virtues 57 is attached to the seal ring 56, so that the wall 11 of the burner body 2, 2 a and the ceiling The space between the plate 55 is covered. That is, as described in the background art, it is a type that does not use a saucer between the burner body and the top plate. Reference numeral 59 denotes an overheat prevention sensor that passes through the burner main bodies 2 and 2a and the burner head 33 and comes into contact with a pan bottom or the like on the virtues 57 to detect the pan bottom temperature.

In the stove burner 1, 1 a, the step portion 18 of the outer cylinder 4 is fitted to the inside of the rubber packing 26 and the communication hole 27 and protrudes downward from the rubber packing 26, and the protrusion 19 also penetrates the communication hole 27. Then, it protrudes downward from the rubber packing 26. Similarly, the horizontal surface 17 b and the protrusion 41 of the outer rib 17 are also located below the rubber packing 26.
Therefore, even if the spilled broth or the like hangs down along the inner wall of the outer cylinder 4, it falls into the mixing chamber 3 from the lower end of the step portion 18 and the protrusion 19 without entering the rubber packing 26 side. . Similarly, on the outer surface side of the outer cylinder 4, boiled juice or the like that has traveled along the outer wall of the outer cylinder 4 flows and falls to the lower horizontal surface 17 b or the protrusion 41 side via the outer rib 17, and does not stay at the position of the rubber packing 26.
Therefore, the corrosion of the rubber packing 26 due to the broth or the like can be effectively prevented.

  Furthermore, even if the flame hole 38 is clogged with dust or the burner head 33 is assembled at an incorrect position on the burner body 2 to cause back combustion, the outer rib 17 and the inner rib 8 can burn the burner. Since the surface area and rigidity of the main body 2 are increased, the temperature rise of the burner main body 2 is suppressed, and there is no possibility of deformation or melting. Further, since the wall portion 11 and the outer cylinder 4 and the inner cylinder 5 are continuously connected via the outer rib 17 and the inner rib 8, a so-called hot water flow at the time of die-casting is formed via the outer rib 17 and the inner rib 8. Done well.

Thus, according to the above-described stove burners 1 and 1a, the burner body 2 is produced by die casting, and the burner body 2 is provided with the outer ribs 17 that are radial in plan view. Deformation and melting due to temperature rise can be effectively prevented, and the durable burner 1, 1a can be obtained.
In particular, since the outer rib 17 is provided between the outer periphery of the outer cylinder 4 and the inner periphery of the wall portion 11, even if the wall portion 11 is provided, the outer rib 17 is interposed via the outer rib 17 during die casting. The hot water flow between the outer cylinder 4 and the wall portion 11 is favorably performed.
Further, since the radial ribs 8 are provided between the inner circumference of the outer cylinder 4 and the outer circumference of the inner cylinder 5, deformation and melting can be effectively suppressed even when the inner cylinder 5 is provided. Good hot water flow can be maintained.

In addition, the number and shape of an outer rib and an inner rib are not restricted to the said form, It can change suitably. Moreover, even if the inner cylinder is not provided in the burner body and the inner cylinder is provided at the tip of the mixing tube, the present invention can be adopted.
Furthermore, the form of the wall portion is not limited to the above form, and the circumferential direction, the length in the downward direction, and the like may be changed .
On the other hand, the mixing tube is not limited to the form formed by the press-formed upper and lower plates, and may be appropriately changed, for example, integrally formed by die casting or the like.

In addition to the aluminum alloy, a zinc alloy, a magnesium alloy, a copper alloy, or the like can be employed as the material for die casting.

It is a disassembled perspective view of a stove burner. It is explanatory drawing of a stove burner, the upper side shows a plane and the lower side shows an AA line section, respectively. In the perspective view of a burner body, the left is seen from above, and the right is seen from below. It is explanatory drawing of a mixing pipe, an upper side shows a plane and the lower side shows a longitudinal section, respectively. It is a longitudinal cross-sectional view of the stove burner which assembled | attached the burner head. In the plan view of the built-in stove, the top plate is omitted. It is a longitudinal cross-sectional view of a built-in stove. It is explanatory drawing of a back side burner, (A) is a longitudinal cross-section, (B) shows the perspective view which looked at the burner main body from the bottom, respectively.

Explanation of symbols

  1 ··· Combustor 2 ··· Burner body 3 ··· Mixing tube 4 · · Outer tube 5 · · Inner tube 6 · · Mixing chamber 8 · · Inner rib 9 · · Screw hole 11 · · · · Wall, 13 ·· Notch, 14 ·· Mounting flange, 15 ·· Positioning flange, 17 ·· Outer rib, 18 ·· Step, 19 ·· Projection, 20 ·· Upper plate, 21 ·· Lower plate , 22 .. Throat part, 23 .. Mixing part, 24 .. Tip part, 25 .. Mounting surface, 26 .. Rubber packing, 27 .. Communication hole, 28 .. Through hole, 30. 31..Through hole, 32..Screw, 33..Burner head, 34..Cylinder, 38..Flame hole, 50..Built-in stove, 51..Body, 52..Burner base, 55 .. Top plate, 57 ..

Claims (2)

A cylindrical burner body in which a mixing chamber is provided and a burner head is mounted on the upper surface, and a mixture that projects radially from the burner body and supplies a mixture of fuel gas and combustion air to the mixing chamber Ri Do and a tube, a stove burner is interposed a packing between said burner body said mixing tube,
The outer wall of the burner main body is attached to the stove side, and a wall portion whose lower end is positioned below the lower end of the burner main body extends concentrically, and at least the burner main body is produced by die casting. , Providing radial ribs in plan view between the outer periphery of the burner body and the inner periphery of the wall ,
A stove burner characterized in that the lower end of the rib has a stepped shape in which the connecting portion between the lower end of the burner body and the connecting portion between the lower end of the wall portions is a horizontal plane, and both horizontal planes are connected by an inclined surface. . The burner body, having an inner tube of a concentric inwardly been made to form the mixing chamber between said inner cylinder, between the outer periphery of the inner periphery and the inner tube of the burner body 2. The stove burner according to claim 1 , further comprising a radial inner rib provided in a plan view .

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