JPS5943916A - Compressed gas silencing device - Google Patents

Abstract

PURPOSE:To lessen loss of the output at the source of compressed gas exhaustion and at the same time to maintain sufficient silencing effect by furnishing a baffle member in the outlet for compressed gas, where the member guides the gas along the interior wall conically and cylindrically. CONSTITUTION:Compressed gas G pressed forward in a compressed gas discharge pipe 2 is introduced into the casing 1 from a communication hole 4 as a compressed gas lead-in hole bored in the side face of the pipe 2 at its end to be sent into the exhaust pipe 3 through a communication hole 5 of the exhaust pipe 3 after pressing through a compressed gas line 6, and further passes through an exhaust hole 10 bored in the bottom 9b of a compressed gas exhaust member 9 to be exhausted out from a conical/cylindrical compressed gas exhaust nozzle or a passage 14 formed between the side 9a of the compressed gas exhaust member 9 and the side face of a baffle member 12. Meanwhile, the compressed gas G flows in the casing 1 through the communication hole 4 and expands there, and is throttled by the communication hole 5 of the exhaust pipe 3 to expands therein to be further throttled by the exhaust hole 10.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a pressure air silencing device V (particularly, a -fil+ Next, a conical pressure air outlet with an enlarged diameter is formed, and pressure air is guided inside the pressure air outlet in a circular cylindrical shape along the inner wall surface that divides the opening. This invention relates to a pressurized air silencing device which promotes pressurized air discharge by providing a rectifier with a gap, reduces pressure loss, and has a high silencing effect.

Generally, a muffler is equipped with many baffles, partitions, perforated pipes, or sound-absorbing materials, and muffles sound by expanding, resonating, absorbing, or interfering with the pressure vibrations of exhaust gas from an internal combustion engine or pressurized air discharged from a blower. It is.

However, in conventional silencers, the higher the quenching effect, the lower the flow of D1 air gas or pressurized air f1. This caused a loss of output from internal combustion engines, blowers, etc. due to the loss of upper air emissions.

The present invention has been devised to effectively solve the above-mentioned conventional problems, and an object of the present invention is to provide a pressure air silencing device with low pressure loss and high silencing effect.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIGS. 1 and 2, 1 is a cylindrical case ring, and one end plate 1a of the case ring 1 is penetrated by a screw,
A pressurized air outlet 2 is inserted which sends out the pressurized air G from a pressurized air outlet 2 of an internal combustion engine, a blower, etc. In addition, to the end plate 1b of the casing 1 facing the end plate 1a, air is introduced into the Kelsink 1 from the pressurized air discharge pipe 2.
′ to extract the pressure G
is inserted with a negative pass through it. Historically, the wall surface VC of the pressurized air discharge pipe 2 and the discharge pipe 3 in the casing 1 is nano 1.
A large number of through holes 4 and 5 are provided in the casing 1, and a discharge pipe 2 (+111) to a discharge pipe 3 (1'u
Pressure air G7) - flowing pressure air flow path 6 or 312 towards ll
has been completed. The open ends of the pressurized air discharge pipe 2 and the discharge outlet 3 in the casing 1 are respectively shielded by cover plates 7 and 8.

- A pressure air outlet A:)J' 9 is attached to the end of the exhaust pipe 3 outside the casing 1, and the pressure air 4Jr outlet A:)J'9 discharges the pressurized air G introduced into the exhaust pipe 3 through the through hole 5. There is. Pressure air discharge passage 9, facing the pressure air discharge force (to the right in the illustration)?
f-1 has a gradual diameter expansion f'L- (a bottomed circle +i+ having a IIJ part 9a and a bottom part 9b having a large number of discharge holes 10)
l+, has a cylindrical or cup-like shape, and the bottom part 9
b;y+=discharge pipe 3 i7! ! The pressure air G discharged from the discharge hole 10 is contained in the conical pressure air discharge port 11 defined by the pressure air discharge hole 9. A rectifying member 12 is provided along the inner surface of 9a to rectify and guide the flow in the shape of a conical cylinder. (1st
The figure shows a state in which the rectifying member 12 is taken out from the pressurized air outlet 11. ) The rectifier 12 has a truncated conical cylindrical shape, and its tip 12a is erected from the bottom 9b of the pressurized air discharge part 9 and is screwed onto a taper rod 13.
It is configured such that the distance between the bottom portion 9b and the tip portion 12a can be adjusted as appropriate.

Next, the operation of this embodiment will be described.

The pressurized air GF1, which is force-fed through the pressurized air discharge pipe 2, is introduced into the casing 1 through the through hole 4 serving as a pressurized air introduction port on the side surface of the end of the pressurized air discharge pipe 2, passes through the juice air flow path 6, and then flows through the through hole 5 of the discharge pipe 3. The pressurized air 1. Air is discharged from a conical cylindrical pressurized air discharge nozzle or passage 14 formed between the side part 9a of the outlet member 9 and the side surface of the viL part 4312.
L.

During this time, the pressurized air Gu is expanded and expanded into the casing 1 through the through hole 4, is throttled through the through hole 5 of the discharge pipe 3, expands through the extraction pipe 3, and is further throttled through the discharge hole 10. In this way, the pressurized air G repeatedly expands and contracts, and as a result, the casing 1 and the discharge pipe 3 are splashed, and the through holes 4, 5 and the outlet hole 10 are This acts as a mass, and this V damps the pressure vibrations.In addition, the pressure vibrations (pressure noise) are radiated into the casing 1 from the through hole 4, and resonate in the casing 1. The energy of the pressure vibration is also consumed by this resonance.

In this way, the air pressure is significantly reduced.

In this way, in order to reduce air pressure, through holes 4°5 and J
Since it is restricted by the outlet hole 10, it is smaller than the outlet hole 10.
t Ii! If the pressure air G cannot be sufficiently released, the pressure air G will be trapped in the casing 1 and the discharge 33, resulting in pressure loss or 4f.
I get tired. However, in the conventional method, the pressure air inside the main body of the silencer is simply let out by υ1 from the exhaust port, so the high-speed pressure air released from the exhaust port causes turbulence and causes This condition obstructs the discharge of pressurized air, consuming a large amount of energy, and causing a loss of pressure inside the main body casing.

However, in the present invention, the rectifying section 12 is provided in the circular elf-shaped pressurized air outlet 11 defined by the pressurized air discharging section 9 to rectify and discharge the pressurized air G, so that the pressurized air discharge is promoted. The pressure loss of the equipment is greatly reduced 1. In other words, if the rectifying member 12 is not provided, the pressure air blown out from the exhaust hole 10 will create turbulent flow in the pressure air exhaust chamber 11, and the exhaust of the pressure air will be inhibited. 1' from the discharge hole 10 by the rectifying member 12.
The pressurized air G discharged from J1 is directed radially outward between the bottom 9b of the pressurized air exhaust member 9 and the tip 12a of the rectifying member 12, and is rectified through the pressurized air exhaust passage 14 along the inner surface of the side portion 9a. Therefore, the discharge of the pressurized air G from the pressurized air 4 outlet 11 is promoted smoothly, the pressure loss at the pressurized air outlet 11 is reduced, and the pressurized air G is trapped inside the casing 1 and the exhaust pipe 3. The pressure loss in the casing 1, discharge pipe 3, etc. is also reduced.

In addition, since the rectifying member 12 is installed, the pressure air outlet 11 is blocked, so that the pressure G's flow is apparently reduced. Since the pressurized air exhaust passage 11 is evacuated to a circle m and expanded in a circular frame shape, a sufficient amount of pressure l'' 1.t & i can be obtained. In order for the pressurized air G to be rectified and discharged by the rectifier 12 and to obtain a predetermined discharge flow rate, a gap or bottom 9b between the side 9a of the pressurized air discharge part 1'J' 9 and the side surface of the rectifier 12 is required. It is necessary to set the mJ gap between the tip part 12a of the straightening part 7 member 12 to a predetermined value, but it can be easily set by screw feeding the straightening part; There is no way to fix it.

In addition, in the above embodiment, the pressure air G was expanded to muffle the pressure air noise, or, for example, a sound-absorbing piece was arranged on the inner wall surface of the cage 1 to absorb the pressure air sound. Any sound deadening means or structure may be used within the Goosong 1. Also, it is optional to provide the pressurized air outlet in contact with the end plate 1bK of the casing 1.

However, according to the present invention! Since the V-mud member allows the pressure air to flow along the inner wall surface defining the pressure air bi outlet and is smoothly discharged, the pressure loss at the casing equipped with the pressure air outlet and noise reduction means is greatly reduced, and the blower The output loss of pressurized air exhaust sources such as internal combustion engines and internal combustion engines is small, and a light extinguishing effect can be maintained. Furthermore, since the pressurized air discharge port is expanded into a circular or cylindrical shape along the inner wall surface, the flow rate of the pressurized air discharge can also be increased.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the apparatus according to the present invention, and FIG. 2 is a longitudinal sectional view thereof. In the figure, 1 is a casing, 2 is a pressurized air discharge pipe, 3 is a discharge pipe,
4 and 5 through holes, 6 is a pressure air flow path, 9 is a pressure air discharge member, 10
1 is a discharge hole, 11 is a pressure air discharge port, 12 is a rectifier (14)
is a pressure air discharge passage, and G is pressure air. Representative Patent Attorney Nobuo Kinutani

Claims (1)

[Claims] 1'YJ with a pressurized air inlet at one end I and a pressurized gas flow at the other end.
2. A casing having a conical pressure air outlet and a silencing means for reducing pressure vibration to a low level in the pressure air flow path inside the case; , and the inner wall m1 of the section 1 - sl+, ' IhaJ, and the H- air along the inner wall in1.
The feature is that it is equipped with a rectifier phase that guides the ffnR shape
(with a pressure air silencer)