JPH0820050B2 - Gun type burner - Google Patents

Description

TECHNICAL FIELD The present invention relates to a gun-type burner mounted on a small petroleum water heater for home use and the like.

2. Description of the Related Art Conventionally, as shown in FIG. 3, a gun-type burner of this type conventionally has a nozzle 1, a swirl vane 3 having a central opening in front of it, and a secondary air around the swirl vane 3. The stabilizer 2 includes a stabilizer 2 having a hole 4, an inner body 5 having a large number of air ejection holes 6 on a wall surface in front of the stabilizer 2, and an outer body 7 forming an air passage 8 outside the inner body 5. 2 an inner cylinder 9 and an outer cylinder so that an air passage flowing through the swirl vane 3 in the central portion of the stabilizer 2 rearward and an air passage flowing coaxially with this passage to the secondary air hole 4 on the outer side are defined.
10 is provided, and the other ends of the inner cylinder 9 and the outer cylinder 10 are closed by providing air holes 12, and the combustion air from the blower fan 16 flows along the inside of the blower case 17, Hole 12,
It is sent to the air ejection hole 6.

Problems to be Solved by the Invention In the conventional configuration, the airflow flowing along the inside of the blower case 17 enters the air holes 12 while swirling due to the shape of the blower case 17 or the like. Even if the air that has entered the inner cylinder 9 is swirling, the flow is stable because of the swirl vanes 3.
Further, even if the air sent to the air ejection holes 6 is swirling, since the air ejection holes 6 are small holes, there is no influence of the swirling. However, if the air entering the inner cylinder 9 and the outer cylinder 10 is swirling,
Since the amount of air sent from the secondary air hole 4 fluctuates and is disturbed,
There are problems that the flame holding in the secondary air holes 4 fluctuates, the flame is not stable, and combustion noise increases.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to stabilize a flame and reduce combustion noise.

Means for Solving the Problems In order to solve the above problems, the present invention provides a current plate between an inner cylinder and an outer cylinder that divides the circumferential direction into several parts.

Effect of the Invention With the above-described configuration, the present invention causes the airflow entering the inner cylinder and the outer cylinder while swirling from the blower case to go straight by the straightening plate that divides the inner cylinder and the outer cylinder into several in the circumferential direction. Since it is turned into a flow and is sent to the secondary air holes, the amount of air sent from the secondary air holes is stable, the flame holding in the secondary air holes is stable, and the overall flame is stable, reducing combustion noise. It

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a nozzle for spraying liquid fuel, 3
Is a swirl vane having an opening in the center in front of the nozzle 1,
Reference numeral 2 denotes a stabilizer having a secondary air hole 4 on the periphery thereof, 5 an inner cylinder having a large number of air ejection holes 6 on the wall surface in front of the stabilizer 2, and 7 an outer cylinder forming an air passage 8 outside the inner cylinder 5. The trunks 9 and 10 are an inner cylinder and an outer cylinder which are provided so as to partition an air passage flowing through the swirl vane 3 behind the stabilizer 2 and an air passage flowing coaxially with this passage to the outer secondary air hole 4, 11 Is a closing plate in which the other ends of the inner cylinder 9 and the outer cylinder 10 are closed by providing air holes 12. 13 is a combustion chamber where combustion is performed, and 14 is a nozzle 1.
Is an ignition electrode rod provided in the vicinity of the blower, 15 is a blower motor for feeding combustion air, and 16 is a blower fan.

Reference numeral 17 is a blower case, and 18 is a straightening plate that divides the space between the inner cylinder 9 and the outer cylinder 10 into several parts in the circumferential direction. Fig. 2 shows the current plate 18
FIG.

In the above configuration, the combustion air is sent from the blower motor 15 and the blower fan 16 along the inside of the blower case 17, part of which is passed through the air passage 8 and is supplied to the combustion chamber 13 from the air ejection holes 6, and the rest is The air is supplied to the combustion chamber 13 through the air holes 12 provided in the blocking plate 11, the space between the inner cylinder 9 and the outer cylinder 10 and the stabilizer 2 through the inner cylinder 9.

The fuel sprayed from the nozzle 1 is sent into the combustion chamber 13 coaxially with the combustion air flowing in the inner cylinder 9, and is ignited by the ignition electrode rod 14 to perform stable flame holding at the swirl vane 3 of the stabilizer 2. A flame is formed in the combustion chamber 13 by the air from the secondary air holes 4 and the air ejection holes 6. On the other hand, the air flowing along the inside of the blower case 17, passing through the air holes 12 while swirling, and sent between the inner cylinder 9 and the outer cylinder 10 becomes a straight flow by the straightening plate 18 which divides the circumferential direction into several parts. Changed 2
Since a stable amount of air is supplied from the secondary air hole 4, flame holding in the secondary air hole 4 is stable. The stabilization of the flame holding in the secondary air holes 4 also stabilizes the combustion in the air ejection holes 6, and the combustion chamber 13
The entire flame formed inside is stable and combustion noise is reduced.

EFFECTS OF THE INVENTION As described above, according to the gun type burner of the present invention, the air flow that enters the inner cylinder and the outer cylinder while swirling according to the shape of the blower case while flowing in the blower case is used as the secondary air hole. Since it is rectified into a straight flow by the rectifying plate before it is discharged from, the flame holding in the secondary air holes is stabilized, the flame in the combustion chamber can be stabilized, and the combustion noise is reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a gun type burner showing an embodiment of the present invention, FIG. 2 is a perspective view of a current plate of the same embodiment, and FIG. 3 is a sectional view of a conventional gun type burner. 1 ... Nozzle, 2 ... Stabilizer, 3 ... Swivel blade,
4 ... Secondary air hole, 5 ... Inner shell, 6 ... Air ejection hole, 7
…… Outer body, 8 …… Air passage, 9 …… Inner cylinder, 10 …… Outer cylinder,
12 ... Air holes, 18 ... Current plate.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazuhiro Adachi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Satoshi Arima 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 56) References Japanese Unexamined Patent Publication No. 57-148111 (JP, A) Actually developed 54-91740 (JP, U)

Claims (1)

[Claims] 1. A nozzle for spraying liquid fuel, a swirl vane provided in the front of the swirl vane, a stabilizer having a secondary air hole on the outer periphery of the swirl vane, and a stabilizer in front of the stabilizer. An inner body having a large number of air ejection holes on a wall surface, and an outer body forming an air passage outside the inner body, and an air passage flowing to the swirl vanes in a central portion of the stabilizer behind the stabilizer, and the passage. An inner cylinder and an outer cylinder are provided so as to partition an air passage flowing coaxially with the secondary air hole, and the other ends of the inner cylinder and the outer cylinder are provided with air holes to close the space between the inner cylinder and the outer cylinder. Gun-type burner with a straightening vane that divides the cylinder in the circumferential direction.