JP3417749B2 - Gas burner combustion equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burner combustor used for a gas FF type heater, etc. for warming up in general households.

[0002]

2. Description of the Related Art In a conventional general gas burner combustion apparatus, as shown in FIG. 4, a wall portion of a flame holding ring 12 is provided on the outer peripheral portion of a burner head 7, and a fixing metal fitting 29 is attached to the wall portion of the flame holding ring 12. Is provided and fixed to the burner body 11 with screws 19. (For example,
(See No. 129611)

[0003]

However, as seen in the above-mentioned conventional example, the material of the burner head 7 is a ceramic plate, and the burner head 7 is
The primary combustion system that forms and burns flames in the flame holes 6 and the semi-Bunsen combustion system that burns the flames slightly from the surface of the burner head 7 are used. The height H of the portion was relatively low at about 5 mm, and the structure was such that the temperature during combustion was easy to apply uniformly.

However, if this gas burner combustion device is adopted in the semi-Bunsen combustion system in which flame rises from the surface of the burner head 7 by about 5 cm, the height of the wall portion of the flame holding ring 12 is also required to be about 2 cm, and the temperature distribution during combustion is also unsatisfactory. Since it becomes uniform, the wall portion of the flame holding ring 12 has a drawback that thermal deformation easily occurs.

Further, since the burner head 7 is made of a ceramic plate material, its mechanical strength is so weak that it may be damaged when the screw 19 is fixed, or if the screw 19 is weakened, the burner head 7 cannot be completely fixed. However, there are cases in which defects such as

[0006]

The present invention has been made to solve the above problems, and a burner head is integrally fixed with a rivet by superimposing a plurality of thin metal plates of the same shape, In a gas burner combustor in which a plurality of flame holes are opened in the burner head and the burner head is fitted in a recess formed in the central portion of the burner body, a secondary air hole opened at the end of the burner body. A step is provided between the surface portion having the groove and the surface portion of the burner head where the flame hole is formed so that the surface portion side of the burner head is at a high position, and the peripheral end portion of the burner head is further pressed.
As arranged flame holding ring for holding the flame above the burner head, Banabode a flange of the flame holding ring
Align it with the surface that has a secondary air hole that opens at the end of
Open a fixing hole to fix the flame holding ring with a screw.
Installed and absorb the step around the fixing hole
A relief hole is provided.

[0007]

Further, a pressing surface portion is provided between a fixing hole formed in the flange of the flame holding ring and an escape hole for absorbing the step around the fixing hole.

[0009]

According to the present invention, between the surface portion having the secondary air hole opened at the end portion of the burner body and the surface portion having the flame hole of the burner head formed by stacking a plurality of thin metal plates having the same shape. By providing a step and fixing it with a screw through the flame retaining ring , the burner head and burner body are firmly fixed, and an escape hole that absorbs the step around the screw fixing hole on the flange surface of the flame retaining ring. With the provision of, the mechanical strength of the flame holding ring is increased and thermal deformation is eliminated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a gas, which is supplied to a nozzle 2 and ejected from the nozzle 2.

A burner throat portion 3 has a bell mouth 4 at its end.

Reference numeral 5 denotes primary air, which is supplied from the bell mouth 4 and mixed with the gas 1.

Reference numeral 6 is a flame hole, and a plurality of burner heads 7 are provided.

Reference numeral 7 is a burner head, which is constructed by stacking a plurality of thin metal plates of the same shape and integrally fixing them with rivets 9.

Reference numeral 8 denotes a combustion cylinder, which has, for example, a cylindrical shape and is configured to perform combustion inside.

Reference numeral 10 denotes secondary air, which is the burner body 1.
Passing through the secondary air holes 22 opened on the outer periphery of 1,
It is supplied to the upper part of the burner head 7.

A recess 26 is formed in the central portion of the burner body 11.
And the secondary air hole 2 is formed in the extending portion of the recess 26.
The surface part 27 which opens 2 is formed.

A flame holding ring 12 is provided with a ring 13 having a height H of 20 mm above the outer peripheral portion of the burner head 7, and is formed so as to hold a flame 14.

The flame retaining ring 12 has a flange 1
8 is extended and a plurality of secondary air holes 22 are formed in the flange 18 thereof.
The burner body 11 is provided with a fixing hole 20 for fixing the screw 19 and an escape hole 21 for absorbing the step 24 around the fixing hole 20.

A pressing surface portion 25 is formed between the fixing hole 20 and an escape hole 21 which absorbs the step 24 around the fixing hole 20, and when the flame holding ring 12 is attached to the upper portion of the burner body 11. , The upper surface of the burner body 11 is directly contacted with the burner body 11, and the surface portion 23 of the burner head 7 located in the recess 26 of the burner body 11 is pressed by the flame holding ring 12 to secure a step 24, and the fixing hole 20 is provided with the screw 1
It is attached by tightening 9.

Reference numeral 15 denotes an igniter unit, which is composed of an ignition plug 16 and a frame rod 17 and the like, and has a combustion cylinder 8
Is attached to the burner head 7 at the top of the burner head 7.

Next, the operation of the above configuration will be described.

At the same time as the gas 1 is ejected from the nozzle 2, the primary air 5 is sucked from the bell mouth 4 of the burner throat section 3.

The sucked gas 1 and the primary air 5 are formed by stacking a plurality of thin metal plates of the same shape arranged in the recess 26 in the central portion of the burner body 11 and integrally fixing them with rivets 9. Reach the flame hole 6 of the burner head 7,
It is ignited by the spark plug 16 of the igniter unit 15,
A flame 14 is formed in the flame hole 6 of the burner head 7.

The flame 14 formed in the flame hole 6 of the burner head 7 has a height H above the outer peripheral portion of the burner head 7.
The flame 14 is held by the flame holding ring 12 having the 20 mm ring 13 and the secondary air 10 supplied from the outer peripheral portion of the flame holding ring 12.

By holding the flame 14 and continuing combustion, the flame holding ring 12 is heated.
2, a flange 18 is extended, a plurality of secondary air holes 22 are formed in the flange 18, and a fixing hole 20 fixed to the upper portion of the burner body 11 with a screw 19 and a step 24 around the fixing hole 20. Is provided with an escape hole 21 for absorbing
Moreover, the flame retaining ring 12 is formed between the fixing hole 20 and the escape hole 21 that absorbs the step 24 around the fixing hole 20.
When installing on the upper part of the burner body 11, directly contact the upper part of the burner body 11.
Surface portion 23 of the burner head 7 located in the concave portion 26 of No. 1
The step 24 which is generated by pressing with the flame holding ring 12 is secured, and the pressing surface portion 25 and the like attached by fastening the screw 19 in the fixing hole 20 prevents thermal deformation due to thermal stress.

Further, when fixing the screw 19, only the pressing surface portion 25 is brought into close contact with the surface of the burner body 11, and the flame holding ring 12
No stress is applied to the entire flange 18 of.

Therefore, the flame retaining ring 12 and the surface of the burner body 11 are kept in close contact with each other, and the amount of combustion air can be constantly supplied, so that the flame 14 is stably retained.

[0030]

As described above, according to the present invention, a plurality of thin metal plates having the same shape are superposed on each other and fixed integrally by rivets, and a plurality of flame holes are formed in the burner head. Then, in a gas burner combustion device configured by fitting the burner head in a recess formed in the central portion of the burner body, a surface portion having a secondary air hole opened at the end portion of the burner body and a flame hole of the burner head are formed. The burner head, which holds the flame above the burner head, is arranged above the burner head so that there is a step between the burner head and the burner head made of the same shape. Securely attached with flame ring.

A flame holding ring for holding a flame is arranged above the burner head, and a flange of the flame holding ring is aligned with a surface portion having a secondary air hole opened at an end portion of the burner body, and the flame holding ring is held. A fixing hole for fixing with a screw is formed in the flange of the flame ring, and an escape hole for absorbing the step is provided around the fixing hole, and a fixing hole formed in the flange of the flame holding ring and the fixing hole. By providing the pressing surface portion between the clearance hole and the escape hole that absorbs the step, only the pressing surface portion is in close contact with the burner body surface during screw fixing, and the ring portion of the flame holding ring is Since no stress is applied, it is possible to provide a useful gas burner combustion device that improves durability against thermal stress during combustion.

[Brief description of drawings]

FIG. 1 is a sectional view of a gas burner combustion apparatus showing an embodiment of the present invention.

FIG. 2 is a perspective view of a gas burner combustion apparatus showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a main part of a gas burner combustion apparatus showing an embodiment of the present invention.

FIG. 4 is a sectional view of a gas burner combustion apparatus showing a conventional example.

[Explanation of symbols]

7 burner head 9 rivets 11 burner body 12 Flame retaining ring 13 ring 18 flange 19 screws 20 fixing holes 21 escape hole 22 Secondary air hole 24 steps 25 Pressing surface 26 recess 27 side

Claims (2)

(57) [Claims] 1. A burner head (7) is formed by stacking a plurality of thin metal plates of the same shape and integrally fixing them with a rivet (9), and further, a plurality of flame holes (6) are formed in the burner head (7). Then, in the gas burner combustor configured by fitting the burner head (7) in the recess (26) formed in the central portion of the burner body (11), the secondary opening at the end of the burner body (11) Surface part (27) having air holes (22) and flame holes (6) of burner head (7)
The burner head (7) between the surface part (23) for opening the
The step (24) so that the surface (23) side of the
The burner head (7) surface portion (23) circumference
A flame holding ring (12) for holding the flame is arranged above the burner head (7) so as to press the end of the flame holding ring.
The flange (18) of the ring (12) to the burner body (1
A surface portion having a secondary air hole (22) opened at the end of 1)
Flange of the flame holding ring (12) according to (27)
Open the fixing hole (20) that is fixed to the (18) with the screw (19).
And the step around the fixing hole (20).
A gas burner combustion device, characterized in that an escape hole (21) for absorbing (24) is provided . 2. The flange (1) of the flame holding ring (12)
8) fixing hole (20) to be opened, and the fixing hole (20)
Claims, characterized in that a pressing surface (25) between the relief hole (21) which absorbs the step (24) around the
Item 1. A gas burner combustion device according to item 1 .