JP2010521612A - Exhaust system muffler - Google Patents

Abstract

TECHNICAL FIELD The present invention relates to a silencer for automobiles, building equipment, and other mechanical equipment, and more particularly to a silencer for automobiles, the silencer having one end forming an exhaust gas inlet and the other end discharging exhaust gas. The tubular body attached to the exhaust system of the mechanical structure forming the exhaust port, and a plurality of sound absorbing guides attached to the interior of the silencer continuously at regular intervals in the direction from the inlet of the main body to the exhaust port; Further, the sound absorbing guide is hollow, the inlet is disposed with respect to the inlet of the main body, the exhaust port is disposed with respect to the exhaust port of the main body, Further, the outer periphery of the exhaust port is joined to the inner surface of the main body, and the surface connecting the outer periphery of the inlet and the exhaust port is inclined away from the inner surface of the main body, and at the same time from the exhaust port, the Towards the entrance Further, in the screw element formed by twisting the plate, the screw element penetrates through the inlets and exhaust ports of the plurality of sound absorbing guides, and the inlet of the sound absorbing guides inside the main body The silencer further includes a screw element fixed to the outer periphery.
[Selection] Figure 3

Description

  The present invention relates to a silencer for automobiles, building equipment, and other mechanical equipment, and more particularly to a silencer for automobiles.

  The silencer is composed of a resonance chamber and a wall part through which exhaust gas passes. This is to remove noise generated when the exhaust valve is opened by offsetting (cancelling) the sound wave traveling in the forward direction of the silencer and the sound wave reflected and traveling in the reverse direction.

  However, some automobile users who want to improve the output and fuel ratio of automobiles by smooth exhaustion strongly desire to replace the existing muffler with a tuned muffler having a large exhaust pipe diameter and low exhaust resistance.

  However, such a tuned muffler is basically a completely open tube except that its outer periphery is wiped with a sound absorbing material, and has the disadvantage that its exhaust sound is too loud for normal use.

For this reason, most car drivers avoid the use of tuned mufflers, and such tuned mufflers are forbidden by the government as long as their exhaust noise is not below a reference level. In other words, in most existing silencer, in order to obtain a smooth exhaust can not ensure the sound deadening qualities, etc. ho a smooth to obtain complete silencing of the exhaust it is impossible to secure command.

  Furthermore, in order to achieve smooth exhaustion while at the same time obtaining a smooth exhaust with a conventional silencer, the volume must be very large, taking up a large space and increasing costs. In particular, large trucks and turbochargers require the maximum exhaust capacity. To meet this requirement, the silencer needs to be very large. . As an example, a large truck is equipped with a muffler that is almost the same size as an oil tank, and requires a large space and high cost.

  The present invention has been made to solve the problems of the existing technology, and provides a silencer that realizes natural and smooth exhaust and silence with excellent exhaust performance, so that an engine or other industrial equipment is provided. It is possible to completely cope with the amount of displacement required by the vehicle, and it is possible to greatly reduce the space and cost and to give the vehicle designer the freedom to select the silencer space. Among other things, the main purpose of this silencer is to achieve sufficient exhaust, increase engine output, and significantly reduce fuel.

  In order to achieve the above object, the silencer according to the present design is attached to an exhaust system of a mechanical structure, an exhaust gas inlet is formed at one end, and a tubular body is formed at the other end with respect to the exhaust port. In the direction to the exhaust port, a plurality of sound absorbing guides are continuously provided inside the silencer main body at regular intervals, the sound absorbing guide is hollow, and its inlet is disposed with respect to the inlet of the main body. The exhaust port is disposed with respect to the exhaust port of the main body, the outer periphery of the exhaust port is joined to the inner surface of the main body, and the surface connecting the outer periphery of the inlet and the exhaust port is the At the same time as it is inclined away from the inner surface of the main body, it is formed from the exhaust port toward the inlet. In addition to the sound absorbing guide portion, a screw element formed by twisting a plate is provided. The screw element is penetrated from the inlet of the sound absorbing guide portion to the exhaust port, and is fixed to the outer periphery of the inlet of the sound absorbing guide. It is preferable that both ends of the main body form a taper-diametered tube, and an outer portion of the reduced-diameter tube includes a plurality of flanges inserted therein.

  The present invention has a number of advantages, wherein the twisted screw element mounted therein induces natural exhaust gas exhaust, and the screw element and the washer projecting at an angle around the screw element. The noise absorbing guide can be used to eliminate the noise, so that there is almost no exhaust pressure, thereby improving fuel consumption, reducing output loss, and minimizing noise (exhaust sound). Although its size is slightly larger than the conventional muffler, it can be freely placed anywhere in the vehicle during vehicle design, and it can also be reduced in weight, so the total weight of the vehicle and its associated costs Can be reduced.

Diagram showing the conventional exhaust system of a car The division | segmentation perspective view of the silencer of this invention Side sectional view showing the silencer of the present invention Front sectional view showing the silencer of the present invention

  Hereinafter, specific embodiments of the present design will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic view showing an exhaust system of an automobile to which a silencer of the present invention is attached.

  The catalytic converter 300 is connected by an exhaust manifold 100 of the engine and the engine pipe 200, the catalytic converter 300 and the silencer 500 (muffler) are connected by an intermediate pipe 400, and the silencer 500 and the resonator 700 are axles. Connected by a pipe 600.

  2 to 4 show the silencer of the present invention.

  The silencer includes a main body 10, a screw element 30, a sound absorption guide 20, and a flange 14.

  The main body 10 is a pipe whose both ends form an inlet 11 and an exhaust port 12, respectively. Both ends of the main body are smaller in diameter than the other parts, and are connected to other parts on the outside thereof. The flange 14 is joined.

  As shown in FIG. 2, the screw member 30 is an element having a twisted shape formed by twisting a long flat plate and fixing both ends thereof. The screw element 30 is mounted in the main body 10.

  The sound absorbing guide 20 is a nozzle-like element, and as shown in FIG. 2, the plurality of sound absorbing guides 20 are continuously attached to the inside of the main body 10 at regular intervals, and as shown in FIG. 20 are respectively joined to the inner wall of the main body 10 and the outer edge of the screw element 30, and are disposed between the inner wall of the main body 10 and the outer edge of the screw element 30.

  The surface connecting the inlet of the sound absorbing guide 20 into which the exhaust gas enters and the exhaust port are inclined so as to be close to the wall of the main body 10, and at the same time, from the inlet 21 of the sound absorbing guide 20 to the exhaust port 22. It is formed over.

  The function of the silencer composed of the above components is as follows.

  When exhaust gas enters through the inlet 11 of the main body 10, the screw element 30 generates a strong vortex in the exhaust gas and passes through the main body at high speed and smoothly. Thereby, a large amount of mixed air can be promptly flowed into the engine, and the output is improved. In addition, this can achieve complete combustion and improve fuel efficiency. The sound wave of the exhaust sound enters the main body 10 and tries to travel straight, but when passing through the screw element 30, its progress is blocked by the twisted surface of the screw element 30 and refracted. The sound wave is reflected by the tapered surface and returned to the sound source direction. The returned sound wave is destroyed by canceling interference with the incoming sound wave, or disappears naturally in the space between the wall of the main body 10 and the tapered surface of the sound absorbing guide 20. Thus, the noise is removed.

  In the above description, the present invention has been described by way of example only. However, those skilled in the art can make various revisions and adjustments based on the above example without departing from the scope of the present invention. Is clear. Of course, such revisions or adjustments are also intended to be embraced in the claims.

  The exhaust silencer according to the present invention can be used in industries such as automobiles, ships, building construction, and other mechanical equipment.

10: Body 13: Tapered tube 14: Flange 20: Sound absorption guide 30: Screw element

Claims (2)

An exhaust system muffler, one end of which forms an exhaust gas inlet and the other end of which forms an exhaust port through which exhaust gas is exhausted.
It is characterized by comprising a plurality of sound absorbing guides that are continuously attached to the inside of the silencer main body at regular intervals in the direction from the inlet of the main body to the exhaust port, and the sound absorbing guide is hollow, An inlet of the sound absorbing guide is disposed with respect to the inlet of the main body, an exhaust port of the sound absorbing guide is disposed with respect to an exhaust port of the main body, and an outer periphery of the exhaust port of the sound absorbing guide is disposed on the main body. The surface joined to the inner surface and connecting the outer periphery of the inlet of the sound absorbing guide and the exhaust port is inclined away from the inner surface of the main body and at the same time formed from the exhaust port toward the inlet. Features
In addition, in the screw element formed by twisting the plate, the screw element is further provided so as to penetrate from the inlet of the plurality of sound absorbing guides to the exhaust outlet, and is fixed to the outer periphery of the inlet of the sound absorbing guide inside the main body. Exhaust system muffler characterized by containing.   The exhaust system muffler according to claim 1, further comprising a plurality of flanges which are tapered at both ends of the main body to form a reduced diameter tube and are inserted into an outer portion of the reduced diameter tube.

Images