JPS5938514A - Pulsating combustion device - Google Patents

Abstract

PURPOSE:To eliminate noise generated due to explosive combustion, by a method wherein a device is of a structure in which an input side mechanism is housed in a muffler being located in a submerged condition as a housing device within a hot water storage tank. CONSTITUTION:Feed air from a fan F for forced fed air forcibly opens a feed air valve V through a muffler chamber 1 and a combined expansion chamber and air chamber 2 in an input side muffler A extending from a feed air duct 6, and is supplied to a mixing chamber 7. Noise produced during explosive combustion is erased by a two-step speed reducing muffler function effected by the combined expansion chamber and an air chamber 2 and a muffler chamber 1. Fuel gas through a gas feed pipe 15 is uniformly pressurized and fed through a gas jet nozzle 8 to the mixing chamber 7 where the gas is sufficiently mixed with the feed air uniformly pressured. The mixture fed to a combustion chamber 16 is fired by discharge spark from an ignition electrode and is explosively burnt to close the feed air valve V with the pressure of an expansion exhaust. The expansion pressure is increased momentarily, but since exhaust gas is rapidly exhausted, it is quickly reduced in a pressure, the air forcibly opens the feed air valve V again to flow in the mixing chamber 7 for mixture with the gas, the mixture entering a subsequent cycle.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a full-air twist firing type pulsating combustion device used as a heating source for a hot water storage type water heater. The chamber and other input side mechanisms are removably housed, and the muffler is housed and installed in the hot water storage tank of the water heater to enhance the silencing effect on the input side and eliminate noise in conjunction with the silencing effect on the exhaust side. The purpose is to make maintenance and inspection easier.

Generally, this kind of pulsating combustion device has P/sec. Boot 0-15
Since it performs 0 consecutive explosive combustions, the noise is significant.Therefore, although various noise countermeasures have been devised in the past, they are still not sufficient.

This invention was made in view of the above points, and one embodiment of the invention will be described below in detail based on the drawings. The plate (3) divides the room into two chambers: a silencing chamber (1) and an air chamber/expansion chamber (2), and both chambers (1) and (2) are connected by a communicating pipe (4) forming a narrow passage. 9, the upper sound deadening chamber (1) has a hot water tank (B)
The air supply duct (6) from the forced air supply fan (F) installed on the top plate (5) of the machine is connected, and the noise generated by explosive combustion is decelerated and muffled in the air chamber/expansion chamber (2). Furthermore, the sound is also muffled in the sound muffling chamber (1), resulting in a two-stage sound muffling effect. A part of the input side muffler (4), that is,
A gas chamber is located inside the air chamber/expansion chamber (2).
(C) is installed, air chamber and expansion chamber (2)
The mixing chamber (
7) via an air supply valve (V), and communicates with the mixing chamber (7) via a gas pipe (9) having a gas jet nozzle (8) at the tip of the gas chamber (C). Using the above air supply valve (V) & this disc type vibration valve,
The valve body θ is inserted between the valve seats (1υ, (b)) facing each other with a small gap between the partition plate 01 that partitions the air chamber/expansion chamber (2) and the mixing chamber (7) of the input side muffler (5).
3) collides back and forth to open and close the valve opening 04) every cycle of air supply, ignition explosion, expansion, and exhaust, and this partition plate α1 is attached to and detached from the outer shell of the input side muffler (B). The partition plate αQ and the gas chamber (C) are connected to the gas pipe (9).
), and the partition plate (3) is tightly fitted freely in the muffler (4), and the communication pipe (4) that can be inserted therein, and the gas chamber/<
- (C) is fixed to the gas supply pipe (B)), and these components rotate the gas supply pipe OQ to attach and detach the partition plate αO, thereby forming the υ muffler (A).
) can be freely attached and detached from the outer shell.

Note that the connection between the partition plate Q4 and the outer shell of the 77r (N) is not limited to screwing, and any other arbitrary means may be used.

The input side muffler (B) with the above configuration is installed so as to be submerged in one side of the hot water storage tank (B) of the water heater, and the other side of the hot water storage tank (BJ is in the mixing room). The exhaust side muffler (7) connected to the lower part of the engine via the exhaust pipe α7 from the combustion chamber θG) is housed so as to be submerged in water. This exhaust side muffler (G) has an expansion chamber of 0.
8) and the silencing chamber 09) are communicated through a narrow passage (incorporated), and a two-stage silencing effect is performed in the same way as the input side muffler described above, which causes the occurrence of explosions and combustion. Efforts are being made to eliminate noise.

eυ is the exhaust port, (4) is the drain outlet, @ke exhaust pipe (1
This is the bend of η. In the above embodiment, the structure of the input side muffler (4) is such that the silencing chamber (1) and the air chamber/expansion chamber (2) are connected through the communication pipe (4). pipe (4)
[Instead, it is possible to use a structure in which a narrow gap is provided between the partition plate (3) and the outer shell of the muffler (A+), but the implementation is free, and the air supply valve (■) is also Of course, the present invention is not limited to type vibration valves.

FIG. 3 shows a different embodiment of the exhaust side muffler (G), in which a part of the muffler (G) is used as a heat exchanger to effectively utilize the heating source. In other words, connect the exhaust pipe (1η) to the jacket (c), and connect this jacket (c) to the exhaust side 77.
The expansion chambers (to) of the (G) are connected and communicated by a plurality of heat exchange pipes (4).

In the above configuration, the air supplied from the forced air supply fan (F) is supplied from the air supply duct (6) through the muffling chamber (1) of the input side muffler (5) and the air chamber/expansion chamber (2). Since the valve (■) is pushed open and supplied to the mixing chamber (7), the combustion air is sufficiently pressure-equalized and enters the mixing chamber, but the noise generated during explosive combustion is generated by the input muffler ( 5) Air chamber and expansion chamber (
2), the sound is decelerated and muffled, and then the sound is eliminated by the two-stage deceleration and muffling action of the muffling chamber (1) & Koyoru. On the other hand, gas supply pipe α
The fuel gas from 5) is sufficiently pressure-equalized and supplied from the gas jet nozzle (8) through the gas chamber (C) to the mixing chamber (7), where it is thoroughly mixed with the pressure-equalized supply air. The air-fuel mixture is fed into the combustion chamber 06), ignited by the discharge spark from the ignition electrode, and combusted explosively, and the expanded exhaust pressure closes the air intake valve (■), causing the air intake valve fV to close. ) and its expansion pressure increases instantaneously, but then the exhaust gas is quickly discharged downstream, causing a rapid depressurization, and the air pushes open the air supply valve (V) again, filling the mixing chamber (7). ), mixes with gas and enters the European cycle. At the beginning of operation, a discharge spark from the ignition electrode is required to ignite the air-fuel mixture, but after a while, high-temperature exhaust gas remains and self-ignition occurs even without a discharge spark. Thus, every second is about 60
It performs continuous combustion by repeating the cycle of air supply, ignition and explosion, expansion, and exhaust up to 130 times. The above-mentioned continuous explosive combustion (combustion exhaust gas) passes from the exhaust pipe (1η) through the exhaust side muffler (G) to effectively increase the temperature of the water stored in the hot water tank (B) and eliminate the noise generated during explosive combustion. It is immediately discharged from the exhaust port υ to the outside of the device.

As explained above, this invention has a structure in which the input side mechanisms such as the air chamber and the gas chamber are housed in the input side muffler, and this is installed in the hot water storage tank and submerged in water. The noise on the input side due to explosion combustion E2 is caused by the action! Combined with the exhaust side muffler's elimination of explosive combustion noise, the noise caused by pulsating combustion is significantly reduced.

In addition, the input side muffler is used as the -M & air chamber, and the input side mechanisms such as the air chamber, gas chamber, and air supply valve can be freely attached to and removed from the input side muffler outer shell.
Even if the input muffler is submerged in water, its maintenance and inspection can be carried out with ease by draining the water from the hot water tank.

[Brief explanation of the drawing]

FIG. 1 is an overall sectional view showing one embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of an air supply valve section, and FIG. 3 is a sectional view of a different embodiment of the exhaust side muffler. CF)...forced air supply fan, included)...input side 77r, (B)...water heater storage tank, (C)...
・Gas chamber, (V)...Air supply valve, (1)...
Silence chamber, (2) Air chamber and expansion chamber, (7
)...mixing chamber, (8)...gas jet nozzle, (9)
...Gas pipe. Patent applicant Paloma Industries Co., Ltd. Figure 1-6 Figure 3-6;

Claims (1)

[Claims] In an all-air combustion type pulsating combustion device used as a heating source for a hot water storage type water heater, the forced air supply fan is connected to an input side muffler, and the muffler has a part of it as an air chamber and is connected to an air supply valve. The muffler is equipped with a gas chamber and communicated with the mixing chamber through a gas pipe having an O-shaped gas jet nozzle at the tip, and components such as the gas chamber, gas vibrator, and air supply valve. A pulsating combustion device characterized in that a muffler can be freely attached to and removed from a muffler outer shell, and the muffler is housed and installed in a hot water storage tank of a water heater.