JPS608402B2 - Gun type gas burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gun-type gas burner, and more specifically, gas and air are dispersed and ejected onto the same plate surface to perform steady combustion on the ejecting plate surface, and the purpose is to achieve stable flame combustion. The air is dispersed and ejected, and a negative pressure zone is formed between the air nozzles by entrainment by the vortex generated on the plate surface of the nozzle, and a small gas nozzle is provided within the negative pressure zone. Therefore, it is an object of the present invention to provide a gas burner that is designed to prevent the negative pressure from being destroyed and to prevent red flame combustion and abnormal heating of the outlet plate surface due to the negative pressure being too strong.

In addition, in high-load combustion furnaces, it is used as a solution to the problem of the flame blowing out due to the sudden increase in pressure inside the furnace during combustion ignition, or the abnormal noise and pulsating combustion that occur due to the unstable movement of the flame in young cases. To provide a gas burner which stabilizes combustion by squeezing the space from the inlet side of an air jet pipe to a jet port and pressurizing jet pressure to jet air. Further, a gas chamber is provided, and a small gas ejection hole bored between the air ejection ports is connected to the gas chamber, and a large number of the small ejection holes are arranged to evenly distribute and supply the gas supplied to the gas chamber. To provide a gas burner which burns evenly over the entire surface of a plate.

Further, a pilot burner is provided on the same plate surface as the main combustion burner, and gas from a pilot pipe is ejected from a part of the main burner to be ignited, thereby providing a gas burner which is used as a pilot burner. .

In other words, when the main combustion burner and the pilot burner are separated, especially in the case of gun-type gas burner combustion, there is a delay in flame transfer due to wind speed, which can lead to explosion and ignition. The pilot flame was burned on the same side in both sections to improve the transfer of the flame.

An embodiment of the gun-type gas burner according to the present invention will be described below with reference to the accompanying drawings.

Reference numeral 1 denotes an outer cylinder provided with an air chamber 3 that communicates with a blower 2, and an inner cylinder 5 is attached to the outer cylinder 1 with a gap between an air passage 4 that communicates with the air chamber 3 on the tip side. , this inner cylinder 5 serves as a partition plate for a chamber 6 recessed on the tip side. It is separated by ``The circumference of this tip is used to stabilize the negative band, which will be described later.

Further, a partition plate 8 is installed in the inner cylinder 5 at a distance from the partition plate 7, and a gas chamber 9 is formed between the partition plates 7 and 8. The partition plates 7 and 8 of the gas chamber 9 have an inlet side 1
A constricted ejection pipe 10 is provided through the gas chamber 9 to increase the ejection pressure from 0' to the ejection row 0''. The air chamber 3 is connected to the air chamber 3, and the air in the air chamber 3 is pressurized while passing through the ejection pipe 10, and is ejected from the ejection row 0''.

The jet pipe 1 has a built-in turning plate a, which gives a swirl to the air flowing through the jet pipe 0. Also, partition plate 8
This is the insertion hole 1 of the branch pipe 12 branched from the gas conduit 11.
3 are arranged at regular intervals and punched. The branch pipe 12 is inserted into the gas chamber 9 through this insertion hole 13, and the conduit blue 1
It is designed to distribute and supply gas from the The tip of the branch pipe 12 is closed, and a horizontal gas ejection hole 14 is bored in the side near the tip so that the gas is evenly supplied through the ejection hole 4.

The front end side partition plate 7 of the gas chamber 9 is configured to slightly reduce the negative pressure to the extent that it is desired to destroy the negative pressure in the negative pressure band caused by the entrainment of the air jetted out from the jetting low Q'' of the jetting pipe 10. A large number of small gas holes that can be maintained and combusted are arranged between the nozzles.

Further, the gas chamber 9 is provided with a gas chamber 8' partitioned off by a partition plate 16 near a part of its outer periphery, and the tip of the pilot tube 17 is inserted into this gas chamber 9'. The gas is ejected from the small gas hole turtle 5 and burns on the same plane as the partition plate 7 in front of the position plate 7 to form a pilot burner 21. Furthermore, the ignition plug 8 is connected to the pilot burner 16. It is arranged so that it can be ignited.

19 detects combustion with a flame detection pestle.

20 is the main body of the water heater.

In the present invention, after the blower 2 is driven to send air with the above-mentioned configuration, gas is passed through the pilot pipe 171, gas in the gas chamber 9' is ejected through the small gas hole 15, and the gas is sent through the ignition plug 181. When ignited, pilot flame combustion continues on the surface of the partition plate 7.

At this time, when the conduit 11 of the main burner is opened and gas is uniformly distributed and supplied into the gas chamber 9 from the branch pipe 12 at the tip of the conduit 11, "this gas flows through the ejection pipe 10 and the ejection port 10".
The gas and air are mixed and ignited by the entrainment of the air that is pressurized and blown out. At the time of ignition, the gas is at a low pressure, and a negative pressure zone is created between the jet ports IQ'' due to the entrainment by the vortex of air jetted from the jet port 10'', and within this negative pressure zone, the gas inside the gas chamber 9 is The low-pressure gas is ejected to the extent that a slight negative pressure can be maintained so as not to destroy the negative pressure, and combustion occurs along the partition plate surface.At this time, the gas in the gas chamber 9 is evenly distributed by the branch pipe 12. Since the air is supplied and the air is evenly jetted out, the gas is drawn in by the entrainment action that occurs when the air is jetted out, and the gas is sufficiently mixed and combustion takes place. 3 is provided with a gas chamber 9 which is distributed and evenly supplied with gas through branch pipes 12 branching from the gas conduit.
An inner cylinder 5 is installed through the gas chamber 9, and has a large number of jet pipes 10 connected to the air chamber 3, which are connected to the air chamber 3, and which are capable of pressurized jets by narrowing the passageway from the inlet side to the jet nozzle IQ''. The side partition plate 7 is equipped with a gas burner in which a large number of gas holes 5 are arranged between the ejection rows 8''9 and 10'' and communicated with the gas chamber 9. Since the air flowing through the ejection pipe 10 is restricted internally, it is pressurized and ejected.Furthermore, when this air is ejected, it forms a negative pressure band around it due to the vortex flow, but at this time, the gas chamber 9 In order to maintain a slight negative pressure without destroying the negative pressure zone by ejecting low-pressure gas from the small gas holes 15 leading to the combustion chamber, combustion occurs along the combustion plate surface (partition plate surface). Since combustion is carried out, the combustion is stable, and there is no abnormal noise or pulsating combustion, and furthermore, there is no incomplete combustion due to insufficient or excessive air, and the combustion is always stable.

[Brief explanation of the drawing]

The drawings show an embodiment of the gun-type gas burner according to the present invention, and FIG. 1 is a side view of the gun-type gas burner in use when it is attached to a water heater, FIG. 2 is a longitudinal side view of the main part of FIG. 1, and FIG. The figures are the x-X line plan view of figure 2, figure 4 is the bottom view of figure 3, and figure 5.
The figure is a sectional view taken along line Y-Y in FIG. 4. 1...Outer cylinder, 2...Blower, 3...
・Air chamber, 4... Air passage, 5... Inner cylinder, 6... Chamber, 7, 8... Partition plate, 9, 9'...
Gas chamber, 10...Ejection pipe, 10'...Inlet side, 10
″...Ejection port, 11...Gas conduit, 12...Branch pipe, 13...Insertion hole, 14...Ejection hole, 15
... Gas hole, 16 ... Partition plate, 17 ... Pilot tube, 18 ... Ignition plug, 19 ... Flame detection village, 21 ... Pilot burner. 2 figures of dancing keys with bamboo blinds, lacquered seashore

Claims (1)

[Claims] 1. The inner tube is attached to the tip side of the outer tube, which has an air chamber inside that communicates with the blower, with an air-containing passage around it, and the inner tube is also recessed with a partition plate on the tip side. At the same time, a gas chamber is provided inside the partition plate and a partition plate separated from the partition plate at an interval. The tips of a number of branch pipes branched from a gas conduit with horizontal gas injection holes were inserted into the pipes, and the upper and lower partition plates were further provided with spout ports that squeezed the tips to pressurize and emit water. Both ends of each of a large number of ejection pipes are installed through the gas chamber and communicated with the air chamber, and furthermore, a partition plate on the tip side is provided with a gas chamber between the ejection ports of the ejection pipes, which communicates with the gas chamber. Gun type gas burner with many holes arranged.