JP3524757B2 - Burner for gas stove - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a burner for a gas stove, and more particularly to the structure of a flame hole for discharging a flame.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 11, a burner for a gas stove has a burner cap c removably mounted on a burner base b of a burner body a. A large number of flame holes d in the circumferential direction
Is provided. A gas nozzle f is provided at the base end of the mixing pipe e of the burner main body a, and the fuel gas is supplied from the gas nozzle f and primary air is sucked from the base end of the mixing pipe e to mix the fuel gas with the primary fuel gas in the mixing pipe e. It is designed to be mixed with air. When the fuel gas mixed with the primary air is ejected from the flame hole d and ignited, a flame h is formed so as to be discharged laterally from the outlet of the flame hole d.

[0003]

In the above burner for a gas stove, the flame h becomes large or small due to a change in the flow rate of the fuel gas ejected from the flame hole d.
In a large fire as shown in FIG. 12 (a) and a small fire as shown in FIG. 12 (b), the flame h is independent of each flame hole d.
Was formed, there was a limit to maintaining combustion when the flow rate of fuel gas was reduced to a small fire, and there was a limit to making a small fire, and the small fire performance was not good. In other words, when the flow rate of the combustion gas is reduced and the fire is reduced, the peripheral edge of the flame hole d is cooled by heat dissipation, and combustion cannot be maintained.

The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a burner for a gas stove capable of improving the performance of a small fire because the flame is hard to extinguish even if the fire is small.

[0005]

In order to solve the above problems, a burner for a gas stove according to claim 1 of the present invention has a burner cap 3 mounted on a burner base 2 of a burner body 1 and an outer peripheral portion of the burner cap 3. In a burner for a gas stove in which a large number of flame holes 4 are arranged in the circumferential direction of the burner cap 3 between the burner base 2 and the upper surface of the burner base 2, adjacent flame holes are used as the flame holes 4.
A main flame hole 4a having a height higher than the space between the four is provided in the circumferential direction,
Two main flame holes 4a adjacent to each other on the outlet side of the main flame hole 4a.
It is characterized in that a communication recess 5 having a shape recessed inward from the outer peripheral surface of the other portion is formed therebetween. Further, according to the present invention
The burner for a gas stove according to claim 2 is a bar of the burner body 1.
Place the burner cap 3 on the nabase 2 and
The burner between the outer periphery of the top 3 and the upper surface of the burner base 2.
A gas condenser having a large number of flame holes 4 arranged in a row in the circumferential direction of the cap 3.
In the burner for B, the main flame hole 4a is circumferentially formed as the flame hole 4.
And the outer peripheral surface of the burner cap 3 projects outward toward the bottom.
Two adjacent main flame holes 4 which are inclined surfaces
By making the outer surface vertical at the part between a,
Between the two main flame holes 4a on the inner peripheral side of the outer peripheral surface of the other part
It is characterized by forming a communication recess 5 having a recessed shape.
To do. According to the first and second aspects, the fuel gas ejected from the main flame hole 4a is ignited to cause the flame α in the main flame hole 4a.
Is formed, but at this time, the flow rate of the fuel gas ejected from the main flame hole 4a changes, and the flame α becomes large or small. Normally, the flame α is independently formed in each of the main flame holes 4a , but when the fire is extremely small, one flame α emitted from the adjacent main flame holes 4a in the communication recess 5 is connected. As a result, even if the flow rate of the fuel gas in each main flame hole 4a is reduced, the flame α is hard to extinguish, a small fire can be realized and the small fire performance is improved.

The burner for a gas stove according to claim 3 of the present invention is the burner 4 according to claim 1 or 2 .
The main flame holes 4a are regularly provided in the circumferential direction, and communication recesses 5 are formed between the main flame holes 4a adjacent to each other every other one in the circumferential direction . When the flame α is extremely reduced to a small flame, the flames α between the main flame holes 4a adjacent to each other are connected to one another, and the small flame performance is improved.

A burner for a gas stove according to a fourth aspect of the present invention is the burner for a gas stove according to the first or second aspect , in which main flame holes 4a and auxiliary flame holes 4b are regularly provided in the circumferential direction as the flame holes 4, and they are adjacent to each other. Two main flame holes 4a are located between the supplementary flame holes 4b, and a communication recess 5 is formed between the main flame holes 4a located between the supplementary flame holes 4b. When the flame α is made extremely small, the flame α between the two main flame holes 4a located between the respective auxiliary flame holes 4b is connected to one, and the small fire performance is improved.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The burner main body 1 integrally has a mixing tube 8 as shown in FIGS. 3 and 4, and in the present example, it is made of aluminum. A gas nozzle 9 for supplying a fuel gas is arranged at the base end of the mixing pipe 8. When the fuel gas is supplied from the gas nozzle 9, primary air is sucked from the base end of the mixing pipe 8 and the fuel gas and the primary gas are mixed in the mixing pipe 8. It is designed to be mixed with air. An annular burner base 2 is provided on the upper surface of the burner body 1, and an annular burner cap 3 is placed on the burner base 2. In the case of this example, the burner cap 3 is also made of aluminum.

As shown in FIGS. 5 to 8, the burner cap 3 is provided with a plurality of grooves in the circumferential direction to form a flame hole 4. The flame hole 4 has a main flame hole 4a and a supplementary flame hole 4b, and the main flame hole 4a and the supplementary flame hole 4b are regularly provided in the circumferential direction. The main flame hole 4a has a small flow path resistance, and the auxiliary flame hole 4b has a large flow path resistance, and the main flame hole 4a increases the gas flow rate ejected from the auxiliary flame hole 4b to form a large flame α. . Further, in the case of this example, two pieces are provided between the adjacent flame-retarding holes 4b.
It is provided so that the individual main flame holes 4a are located. Further, a flame-complementing hole 4b is located at a portion corresponding to a Gotoku leg 10a described later (in the case of this example, a portion indicated by reference numeral δ spaced at an interval of 72 degrees in the circumferential direction). 2 located between each of the flame stabilizing holes 4b
The outer peripheral side between the individual main flame holes 4a is recessed toward the inner peripheral side from the outer peripheral surface of the other part, and a communicating recess 5 is provided between the main flame holes 4a adjacent to each other in the recessed part. is there. That is, as shown in FIG. 8, the outer peripheral surface of the burner cap 3 is an inclined surface projecting outward as it goes downward, but at the portion between the two main flame holes 4a located between the respective flame-repair holes 4b. The outer surface is a vertical surface, and as a result, the portion between the two main flame holes 4a is a communication recess 5 that is recessed toward the inner peripheral side from the outer peripheral surface of the other portion that is an inclined surface. . When forming the communicating recesses 5, in the present example, the communicating recesses 5 located on both sides of the portion indicated by reference numeral δ are slightly deep, and the communicating recesses 5 located at other positions are somewhat shallow. Also, burner cap 3 and burner base 2
As shown in FIG. 3, an annular space 12 is formed between and, and the annular space 12 communicates with the main flame hole 4a and the auxiliary flame hole 4b.

As shown in FIG. 3, a flange portion 13 having a substantially arcuate cross section is integrally extended from the outer periphery of the burner base 2 to the outside, and a receiving step portion is further extended from the flange portion 13 toward the outer periphery. 14 are continuously output. A top plate 15 made of a material such as glass is provided with a circular opening 16 having a diameter larger than the outer shape of the flange 13, and the edge of the opening 16 of the top plate 15 is placed on the step portion 14. . An annular pressing plate 17 is placed on the top plate 15 via the edge of the opening 16 on the receiving step portion 14, and the opening 16 of the top plate 15 is interposed between the pressing plate 17 and the receiving step portion 14. The top plate 1
5 is attached. A plurality of (five in this example) mounting holes 18 are bored in the pressing plate 17 at equal intervals (72 ° intervals in this example) in the circumferential direction, and each mounting hole 18 is formed in the receiving step portion 14. A female screw hole 19 for attachment is drilled so as to correspond to. The mounting screw 20 is formed by integrally forming a bottomed cylindrical cap 20b on the head of the male screw 20a and providing a cross-shaped driver groove 20c on the bottom of the cap 20b.
The pressing plate 17 is attached to the stepped portion 14 at. In the case of this example, the fixing screws 20 are fixed at three places out of five places. When mounted with the mounting screw 20, the male screw portion 20 a is screwed into the female screw hole 19 for mounting, and the cap 20 b is fitted into the mounting hole 18.
The remaining two of the five places are not attached by the attaching screws 20, and the bottomed cylindrical cap 21 similar to the cap 20b is fitted and attached in the attaching hole 18. An edge member 22 is attached to the outer peripheral edge of the top plate 15, and the edge member 22 is placed on the upper surface of the counter 23 or the like.

Further, in this example, the Gotoku 10 is formed by arranging five Gotoku claws 10b at equal intervals (intervals of 72 degrees) in the circumferential direction as shown in FIG. A disc-shaped tray 24 that covers the upper portion of the burner cap 3 is integrally provided in 10b. The bottom of each Gotoku nail 10b is the Gotoku leg 10a.
The lower end of each Gotoku leg 10a can be placed on the pressing plate 17. As shown in FIG. 3, a positioning protrusion 10c is provided at the lower end of each of the five virtue legs 10a.
And the positioning protrusion 10c is attached to the cap 2
The Gokutoku 11 can be positioned by inserting it into the 0b or the cap 21. As described above, when the Gotoku 10 is set, each Gotoku leg 10a corresponds to the portion of the flame-proofing hole 4b indicated by the symbol δ.

The ignition flame hole 2 is provided at an appropriate one of the five portions of the flame-retarding hole 4b indicated by the numeral δ.
5 are provided. In order to provide this ignition flame hole 25, as shown in FIGS. 9 and 10, the burner base 2 is formed with a slit 26 penetrating vertically. In the case of this example, the slit 26 is provided so as to be long in the direction orthogonal to the circumferential direction, and the end portion of the slit 26 reaches the outer peripheral end of the burner base 2. On the upper surface of the burner base 2, there are projecting guide portions 27 on both sides of the slit 26 which guide the gas into the slit 26, and the upper surface of the guide portion 27 is a horizontal plane. The slit 26 has a narrow width portion 26a having a narrow width at the portion where the guiding portion 27 is provided (outer peripheral side of the burner base 2).
A wide portion 26b having a wide width is formed in a portion where there is no (inner peripheral side of the burner base 2). Slit 2 of burner base 2
The space below 6 is the ignition chamber 28, and the slit 5
The ignition target 2 so as to face the inside of the ignition chamber 28 from the vicinity of
9 is projected. An ignition plug 30 is attached below the ignition chamber 28 as shown in FIG.
The discharge electrode 30 a of the discharge electrode 30 a facing the ignition chamber 28.
a is opposed to the ignition target 29. A protruding portion 31 protruding upward is provided at a portion of the flange portion 13 corresponding to the ignition chamber 28, and an elongated hole-shaped hole portion 32 is provided at an upper portion of the protruding portion 31 so as to vertically pass therethrough. The hole 32 communicates with the ignition chamber 28 and the slit 2
The narrow width portion 26a of No. 6 is communicated.

When the fuel gas mixed with the primary air is supplied from the mixing pipe 8 to the annular space 12 between the burner cap 3 and the burner base 2, the fuel is supplied from the main flame holes 4a and the auxiliary flame holes 4b. Gas is ejected, while the ignition flame hole 25
Then, the fuel gas is ejected from the slit 26 to the ignition chamber 28 below. At this time, a spark is generated between the discharge electrode 30a and the ignition target 29 to ignite the fuel gas, and an ignition flame is formed from the slit 26. This ignition flame is discharged upward from the ignition chamber 28 through the hole 32 and ignited by the fuel gas ejected from the main flame hole 4a and the auxiliary flame hole 4b.
As shown in FIGS. 1 and 2, a flame α as a main flame is formed so as to be discharged from the main flame hole 4a, and a flame α as a supplementary flame is formed so as to be discharged from the supplementary flame hole 4b. by the way,
When the amount of the fuel gas discharged from the main flame holes 4a is increased, the flame α becomes large, and when the fuel gas of the gas discharged from the main flame holes 4a is decreased, the flame α is changed to a small fire.
The flame α is being discharged independently from each of a. However, when the fuel gas is squeezed to an extremely small fire, the number of flames α emitted from the adjacent main flame holes 4a in the communication recess 5 becomes one, and the flow rate of the fuel gas ejected from each main flame hole 4a becomes smaller than that in the conventional case. Even if the amount is reduced, the flame α is not extinguished, and the small fire performance that enables small fire is improved. Actually, as a heat quantity, the small fire performance can be improved by about 70% as compared with the conventional one. As described above, the condition that the number of flames α discharged from the adjacent main flame holes 4a is one is that the main flame holes 4a
When the height of a is L and the interval between adjacent main flame holes 4a is x, it is necessary to satisfy x <L.

Further, in the example of the present embodiment, the flame-retarding holes 4b which are regularly provided in the circumferential direction of the burner have a narrowed flow passage on the inner peripheral side near the annular space 12 and the outlet on the outer peripheral side. Since the flow passage area is large, the flow velocity of the fuel gas ejected from the flame-retarding holes 4b is slow and the shape of the flame hole is such that lifting is unlikely to occur, and the lifting performance when the burner gas amount is increased is improved. . In addition, in the example of the present embodiment,
The flame hole 4 provided in the burner is a combination of the main flame hole 4a and the supplementary flame hole 4b in which the amount of fuel gas ejected is smaller than that of the main flame hole 4a. When designing as a burner that is large and consumes a small amount of fuel gas, the burner that consumes a large amount of fuel gas and the burner base 2 have the same dimensions, and the burner body 1 and the like can be commonly used. Sometimes there is. Further, the characteristics of the burner can be variously changed by changing the shape of the flame-compensating hole 4b and changing the type of combustion performance. For example, in the case of the flame-retarding hole 4b of the present embodiment, although the lifting performance is good but the small fire performance is poor,
When the shape of b is a shape such as a round hole that is difficult to cool, it is a flame-retarding hole 4 having a small fire performance equivalent to or better than the main flame hole 4a.
b can be provided, and a burner with better small fire performance can be obtained.

As shown in FIGS. 3 and 9, a cylindrical boss 33 protruding from the upper surface of the burner base 2 is provided at an appropriate position on the inner circumference of the burner base 2, and the boss 33 has a female screw hole 33a from the upper surface. Is perforated. A semi-circular cutout 34 corresponding to the cylindrical boss 33 is provided on the inner periphery of the burner cap 4, and when the burner cap 3 is set at a predetermined position on the burner base 2, the cutout 34 and the circle are cut. The columnar boss 33 is fitted. Then, a screw-shaped set screw 35 is screwed into the female screw hole 33a of the boss 33, and the head 35a of the set screw 35 is positioned above the notch 34 edge so that the burner cap 3 does not come off. By thus fitting the notch 34 into the boss 33, the burner cap 3 is positioned in the circumferential direction, and the burner cap 3 is prevented from floating upward by being stopped by the set screw 35.

In the above description of the embodiment, two adjacent
A communication recess 5 is provided in which the outlet sides of the two main flame holes 4a communicate with each other.
The example in which the flame α is connected to one when the fire is made small has been described, but the communication recessed portion 5 that communicates with the outlet sides of the three or more adjacent main flame holes 4a is provided, and when the fire is made to be three or more main flames. Hole 4a
The flame α may be connected.

[0017]

According to the first aspect of the present invention, the burner cap is mounted on the burner base of the burner body, and a large number of them are provided in the circumferential direction of the burner cap between the outer peripheral portion of the burner cap and the upper surface of the burner base. In a burner for a gas stove in which multiple flame holes are lined up, the height is higher than the distance between adjacent flame holes as flame holes.
High main flame holes are provided in the circumferential direction, and a communicating recess having a shape recessed inward from the outer peripheral surface of the other portion is formed between two adjacent main flame holes on the outlet side of the main flame hole. Therefore, the flame becomes large or small due to the change in the flow rate of the fuel gas ejected from the main flame hole, but normally, the flame is formed independently in each main flame hole. When the fire is turned into a small fire, the flames that come out from the adjacent main flame holes in the communication recess are connected to one another, and even if the flow rate of the fuel gas in each main flame hole is reduced, the flames will not extinguish easily. Can be realized and the small fire performance is improved. In the invention of claim 2 of the present invention
Also, the main flame hole is provided as a flame hole in the circumferential direction, and the burner cap is
The outer peripheral surface of the
The outer surface is a vertical surface between the two main flame holes adjacent to each other.
Between the two main flame holes adjacent to each other
By forming a communication recess that is recessed inward from the outer peripheral surface
Change the flow rate of fuel gas ejected from the main flame hole.
This may cause the flame to become large or small, but
Normally, a flame is formed independently in each main flame hole, and it is extremely small.
In case of fire, the flame coming out from the main flame hole next to each other in the communication recess
Are connected to one, and the flow of fuel gas in each main flame hole is
Even if you squeeze the amount, the flame will not extinguish easily
It can be realized and small fire performance is improved.

The invention of claim 3 of the present invention is the invention of claim 1.
Or to claim 2 fraud and mitigating risk main fire hole as fire hole in the circumferential direction
Since it is provided regularly and communication recesses are formed between every two main flame holes adjacent to each other in the circumferential direction , when the flame is extremely small, the flame between every two main flame holes adjacent to each other is extremely small. It is connected to one and the small fire performance is improved. Further, the invention of claim 4 of the present invention is, in claim 1 or 2, wherein a main flame hole and a supplementary flame hole are regularly provided in the circumferential direction as flame holes, and two flame holes are provided between adjacent flame assist holes. Since the main flame holes are located and the communication recesses are formed between the main flame holes located between the respective flame auxiliary holes, the two main holes located between the respective flame auxiliary holes when the flame is extremely lit. The flame between the flame holes is connected to one, and the small fire performance is improved.

[Brief description of drawings]

FIG. 1 shows a main part of an example of an embodiment of the present invention,
(A) is sectional drawing seen from the plane, (b) is a front view.

2A and 2B show a state of a flame as above, FIG. 2A is a cross-sectional view seen from a plane for explaining a state of a large fire, and FIG. 2B is a cross-sectional view seen from a plane for explaining a state of a small fire. .

FIG. 3 is a cross-sectional view showing the entirety of the burner for a gas stove of the above.

FIG. 4 is a plan view showing the entire gas stove burner of the above.

FIG. 5 shows the burner cap of the above, (a) is a plan view, and (b) is a bottom view.

6A is a sectional view taken along line EO of FIG. 5B, FIG.
5C is a sectional view taken along the line COD of FIG. 5B, and FIG.
It is the AOB sectional view taken on the line of (b).

7A is a sectional view taken along the line FO of FIG. 5B, FIG.
5B is a sectional view taken along the line GO of FIG. 5B, FIG. 5C is a sectional view taken along the line HO of FIG. 5B, and FIG. 5D is a sectional view taken along the line IO of FIG. 5B.

FIG. 8 is a perspective view showing a portion of a communication recess of the above burner cap.

9A and 9B show a state in which the mixing tube of the burner main body is omitted, in which FIG. 9A is a plan view and FIG. 9B is a bottom view.

FIG. 10 shows the details of the slits and holes in the above, (a)
Is a plan view and (b) is a sectional view taken along line XX of (a).

FIG. 11 shows a conventional example, (a) is a partially cutaway plan view,
(B) is the YOZ sectional view taken on the line of (a).

12A and 12B show a state of a flame of a conventional example, FIG. 12A is a cross-sectional view seen from a plane for explaining a state of a large fire, and FIG. 12B is a cross-sectional view seen from a plane for explaining a state of a small fire. is there.

[Explanation of symbols]

1 burner body 2 burner base 3 burner cap 4 flame holes 4a Main flame hole 4b Inflammation hole 5 communication recess

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-139910 (JP, A) JP-A-62-52308 (JP, A) Actual development Shou 59-148933 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) F23D 14/06

Claims (4)

(57) [Claims] 1. A burner for a gas stove in which a burner cap is mounted on a burner base of a burner body, and a large number of flame holes are arranged in a circumferential direction of the burner cap between an outer peripheral portion of the burner cap and an upper surface of the burner base. Next to it as a flame hole
A main flame hole with a height higher than the space between the matching flame holes is installed in the circumferential direction.
On the outlet side of the main flame hole, a communication recess having a shape recessed inward from the outer peripheral surface of the other portion is formed between two adjacent main flame holes. For burner. 2. A burner on the burner base of the burner body.
The burner cap and the outer periphery of the burner cap.
Between the upper surface of the burner and a large number of flame holes in the circumferential direction of the burner cap.
In the burner for the gas stove in which the
The flame holes are provided in the circumferential direction, and the outer peripheral surface of the burner cap is lowered downward.
Two slanted surfaces protruding outward and appropriate adjacent ones
The outer surface is vertical between the main flame holes of the
Between two main flame holes adjacent to each other, the inner circumference side from the outer circumference surface of the other part
It is characterized in that it is formed by forming a communication recess having a recessed shape
Burner for gas stove. 3. A main flame hole is regularly provided in the circumferential direction as a flame hole.
Indented between two main flame holes that are adjacent to each other in the circumferential direction.
Claim 1 or Claim formed by forming a part
A burner for a gas stove according to Item 2. 4. A main flame hole and a supplementary flame hole are circumferentially formed as flame holes.
Provided regularly, and located two main flame holes between adjacent flame holes.
To form communication recesses between the main flame holes that are located between each of the supplementary flame holes.
3. The method according to claim 1 or 2, characterized in that
Burner for gas stove.