JPS60133208A - Pulse burning apparatus - Google Patents

Abstract

PURPOSE:To operate a flapper valve smoothly without dividing an apparatus itself, by constituting the flapper valve, which opens and closes a plurality of feeding ports for feeding air for combustion by a plurality of divided pieces. CONSTITUTION:A flapper valve 9 is constituted by a plurality of ring shaped divided pieces 9a, 9b and 9c. The devided pieces 9a, 9b and 9c are arranged in a concentric pattern, At the time of combustion, the flapper valve 9 is opened and closed. Since the flapper valve 9 is constituted by a plurality of the divided pieces 9a, 9b and 9c, the weight of each of the divided pieces 9a, 9b and 9c is light. The divided pieces are operated smoothly following the pulse oscillation. Since the plurality of the divided pieces 9a, 9b and 9c are concentrically arranged, the gap between each of the divided pieces 9a, 9b and 9c becomes small, and the configuration is made compact. Even though the jetted air becomes a drifted state, the operation is uniform and the burning characteristics can be maintained excellently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a 4-lux combustion device for pulsating gaseous fuel in a combustion chamber, and particularly to an improvement in a valve system for forming pulse combustion.

[Technical background of the invention and its problems]

Pulse combustion devices are known to intermittently and repeatedly burn fuel within a combustion chamber. This pulse welding equipment generally connects or installs one-way valves as fluid control valves on the air supply side and the fuel supply side of the combustion chamber, so that each valve has one-way flow control, that is, it functions like a check valve. The initial combustion is performed using a spark plug, and the subsequent combustion is performed using the high-temperature combustion gas remaining in the combustion chamber, and explosive combustion, expansion, exhaust, and intake strokes are repeated to perform - or Luss-like combustion. ing.

Usually, a mechanical valve as shown in FIG. 1 is used as the pulp used in this type of pulse combustion device.

That is, the one shown in FIG. 1 has a ring-shaped flap/4' valve in the combustion chamber a, a valve holder c1, a nozzle hole d, and a flap A?. Two valve devices e are provided concentrically, and pulp f is provided on the air supply side and the fuel supply side, respectively.
, g. In addition, in Fig. 1, h
is a gas fuel supply pipe, l is a spark plug, and j is a flame-holding member.

However, the one shown in Figure 1 has a single flapper valve, so when a large amount of combustion occurs, the flapper valve also becomes larger and weighs more. I can't move.

For this reason, there are disadvantages in that the combustion characteristics deteriorate and the pulse oscillation stops. In addition, the flapper valve moves unevenly and has a short lifespan, and furthermore, it becomes difficult to start the valve at the start of combustion.

Therefore, it has been considered to divide the device itself into multiple parts, but in this case, all the functional parts of the palm burning device are required for each divided part, resulting in a large and complicated device. Moreover, each divided combustion section also interferes with each other, resulting in the inconvenience of stopping oscillation.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to provide a pulse combustion device that allows the flap valve to operate smoothly without dividing the device itself. It is.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention comprises a flannel valve or a valve that opens and closes a plurality of supply ports of a combustion air supply path using a plurality of divided pieces.

[Example of idea]

This invention will be explained below based on an embodiment shown in the drawings. FIG. 1 shows a schematic configuration of a Norse combustion apparatus, and in the figure, reference numeral 1 denotes a combustion chamber that includes an ignition plug 2 inside and an air chamber 3 connected to an opening. Note that 4 is a tail pipe connected to the combustion chamber 1, and 5 is a muffler installed downstream of the tail pipe 4. In addition, between the combustion chamber 1 and the air chamber 3, there is a perforated plate 8 having a fuel injection hole 6 in the center and an air injection hole 7 around the periphery, and the fuel injection hole of the perforated plate 8. Hole 6・
. . . and a flapper valve 9 for each air outlet 7 .
A valve device 10 is installed. Note that 1 is a valve holder, and a plurality of pressure propagation holes 11th... are bored in the pulp holder 11.

On the other hand, in the figure, 12 is a combustion startup fan, and 13 is a gas fuel supply pipe. The combustion starting fan 12 of these is connected to the air chamber 3 through a blowing pipe 14, and uses the blowing pipe 14 and the air chamber 3 as a combustion air supply path to the air blowing hole 7 and its air blowing. Combustion air can be supplied into the combustion chamber 1 through a flap I4 valve 9 that opens and closes the hole 7. It goes without saying that the combustion start fan 12 operates only when combustion starts. In addition, the gas fuel supply pipe 13
is the fuel chamber 1 provided in the center of the perforated plate 8, passing through the entire air chamber 3.
7, and communicates with the fuel nozzle 6 through the gas fuel supply pipe 13 and the fuel chamber 17 as a gas fuel supply path. Gas fuel can be supplied into the combustion chamber 1. However, if all combustion air is supplied into the combustion chamber 1 using the combustion start fan 12, and gas fuel is also supplied, and the mixture is ignited with the spark plug 2, intermittent combustion occurs with explosive combustion as shown in the table. Combustion is started, and then by stopping the combustion startup fan 12 and the ignition plug 2, self-priming is performed by the operation of the valve device 10 based on the repeated positive and negative pressure generated in the combustion chamber 1. It is now possible to operate intermittent combustion.

Further, as shown in FIG. 4, the flapper valve 9 is composed of a plurality of ring-shaped divided pieces 9a, 9b, and 9c, and these divided pieces 9a.

9b and 9cf are arranged concentrically. Further, as shown in FIG. 5, the valve holder 11 is fixed to the perforated plate 8 with a support screw 22 via a spacer 2. Each of the link-shaped divided pieces 9a, 9b, and 9c has a through hole 23, and the sweep 21 is inserted into the through hole 23 to restrict radial adjustment. It has become. Each division piece 9 of the above-mentioned flapper valve 9
g, 9b and 9c each have multiple all-party eruption lowers.
...is facing.

Thus, gas is supplied into the combustion chamber 1 from the gas fuel supply path 13, and air from the blower pipe 14 and the air chamber 3, respectively.
When the spark plug 2 is ignited, the ignition pressure closes the divided pieces 9a, 9b, and 9c of the flapper valve 9, cutting off fuel and combustion air. When the combustion gas in the combustion chamber 1 is exhausted through the tail pipe 4, the inside of the combustion chamber 1 becomes negative pressure,
Separate pieces 9a and 9b of flapper valve 9.

9c is opened and fuel and air are supplied into the combustion chamber 1. Then, it is ignited and combusted by the high-temperature exhaust gas that is simultaneously drawn into the combustion chamber I, and this continues intermittently. During this combustion, the flapper valve 9 opens and closes, but since the flapper valve 9 is composed of a plurality of divided pieces 9a, 9b, and 9c as described above, each divided piece 9
a. The weight of 9bg9C is light, and it operates smoothly by following the gurus oscillation. In addition, a plurality of divided pieces 9&, 9b
, 9c are arranged concentrically, so each divided piece 9a, 9b
, 9c is small, it is possible to make it more compact, and even if the ejected air is in a drifted state, it can operate uniformly and maintain good combustion characteristics.

In the above-mentioned embodiment, each of the divided pieces 9a, 9b, 9a of the flapper valve 9 is provided with a through hole 23 for inserting a spacer, but the invention is not limited to this, and as shown in FIG. As shown, each divided piece 9a, 9b',
9. The inner and outer peripheral edges of c are 1. The radial movement may be restricted by guiding with pacers 21, 21.

[Effect of]

As explained above, the invention has the following features: - Since the flap valve for opening and closing the combustion air supply port is constituted by a plurality of divided pieces, each divided piece is light in weight, operates smoothly, and performs good pulse combustion. It also enables smooth start-up. Furthermore, since each divided piece is not subjected to uneven pressure, there is little deformation and high reliability. Furthermore, in the event that one of the divided pieces breaks down, it is only necessary to replace it, which has many advantages such as being economical.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a conventional example, FIGS. 2 to 5 show an embodiment of the present invention, FIG. The figure is a side sectional view showing the main parts.
Figure 4 is a plan view showing the flapper valve's divided pieces, Figure 5 is a side sectional view showing the mounting structure of the flapper valve's divided pieces, and Figure 6 is a diagram showing several other structures of the flapper valve's divided pieces. FIG. 1... Combustion chamber, 9a, 9b, 9c... Divided piece, 9.
...Flapper valve. Applicant's agent Patent attorney Takehiko Suzue Figure 3f Figure 4 Figure 6

Claims (2)

[Claims] (1) In a device that supplies all the combustion components into the combustion chamber through a plurality of supply ports opened and closed by flapper valves and performs continuous combustion, the Aratsuno 9 valve is configured by a plurality of divided pieces. A pulse combustion device featuring: (2) Each of the plurality of divided pieces is formed into a ring shape,
The pulse combustion device according to claim 1, characterized in that the pulse combustion device is arranged concentrically.