CN2273774Y

CN2273774Y - Spiral-flow type exaust silencing arraugement

Info

Publication number: CN2273774Y
Application number: CN 96227290
Authority: CN
Inventors: 朱尊德
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-09
Filing date: 1996-02-09
Publication date: 1998-02-04
Anticipated expiration: 2006-02-09

Abstract

The utility model relates to the exhaust silencing device of the internal combustion engine, which is mainly characterized in that the internal part of the cylinder body is provided with a flow guide disk, a partition board, and a flow guide board. Under the action of the flow guide disk, the partition board, and the flow guide board, the fume can form rotation-shaped air current; centrifugal damping and central low voltage can be generated; the exhaust silencing device of the internal combustion engine can obtain four effects: obvious reduction of the noise, energy saving, reduced pollution, and safety. The exhaust silencing device of the internal combustion engine can be widely matched on all kinds of internal combustion engines.

Description

Cyclone discharge silencer

The utility model belongs to a kind of exhaust silencer for internal-combustion engine, particularly the exhaust silencer that uses on internal-combustion engines such as automobile, tractor, motor tricycle, motorcycle, internal combustion locomotive, internal-combustion engine boats and ships.

Current, be used for the silencing apparatus on the various internal-combustion engines, general all according to the energy of consumption blast air and the noise-cancelling theory of balance stream pressure fluctuation, so on the structural design of silencing apparatus, all adopting repeatedly makes air communication cross the section that dwindles and enlarge, repeatedly change the direction of air-flow, or air-flow is divided into very little tributary along rough apparent motion.Though this structure can reach the effect of noise elimination, obstructed because of exhaust, cause back pressure to increase, when high speed of motor, the output power loss can reach 5-10%, and rotating speed is higher, and exhaust resistance is bigger, and power loss is bigger.For example, Chinese patent 92219425.4 " automotive muffler " though the good noise elimination effect of tool, the section that repeatedly changes direction, repeatedly makes the air communication small holes dwindle and enlarge because of air-flow is so energy-saving effect is very undesirable.Especially with after a period of time, aperture is stuck with paste very for a short time by carbon distribution, and exhaust resistance increases, and power obviously descends.And the effect that this silencing apparatus does not possess safety, purifies.Make the silencing apparatus noise little, power loss is little, and safety, purification are the more scabrous technical problems of silencing apparatus for one.

The purpose of this utility model provide a kind ofly collect low noise, energy-conservation, safe purification function is one and internal-combustion engine rotary flow type silencing apparatus simple in structure.

The technical solution of the utility model is achieved in that

A kind of exhaust silencer for internal-combustion engine, constitute by suction tude, front head, cylindrical body rear head and outlet pipe, at interval connect several frustroconical hole dividing plates on the cylindrical body internal chamber wall and form the chamber of respective numbers, fix several arc deflectors in each dividing plate back, hole, at the fixing conical diversion disk in the arc deflector back of each chamber.Wherein, the outlet pipe of tube wall band exhaust port can be set at the rear head middle part, its periphery is provided with the exhaust shroud of inlet hole; Also can on the inwall of exhaust shroud, be provided with noise abatement dust suction thing; In addition, suction tude can be located at front head central authorities or be located at the side of cylindrical body near front head.

The utility model has been compared following advantage with existing silencing apparatus.

The 1st, because of having changed internal structure, promptly removed the core pipe and the porous barrier of silencing apparatus inner chamber, replace with guide plate, hole dividing plate, diversion disk, thus simple in structure, resistance is little.The 2nd, because of having changed stream condition, the dispersion air-flow that promptly becomes the silencing apparatus inner chamber is focused airflow, and air flue can not stopped up by carbon deposit increases resistance attenuating power.The 3rd, because of having changed the direction of inner chamber air-flow, promptly become repeatedly impact, the revolution air-flow of 180 ° of bafflings is swirling eddy, is by centrifugal decompression, deceleration, buffering method work, so impact, vibration, eddy current, resistance are all very little, air-flow can be discharged continuously equally.Contact because of the Mars in the flue gas that the cylindrical body inwall slows down under the effect of rotating centrifugal again and at the long flow path of inner chamber, so the overwhelming majority can be eliminated.The 4th, because of having changed the sectional area of air-flow, it is unobstructed through the sectional area air flow of the sectional area ratio suction tude air-flow of the air-flow of outlet pipe to enter the silencing apparatus inner chamber, and impact force is little, and pulse is little, so resistance is little, noise is just low.The 5th, because of having changed the structure of outlet pipe, promptly on outlet pipe, be provided with several apertures, and add two ends exhaust shroud ventilation, that the dust suction thing is arranged in the periphery, play reduce noise, the remaining Mars in removing smoke and the effect of harmful substance.The 6th, because of form and the mode that has changed exhaust airstream, promptly become and concentrate exhaust into disperseing exhaust, become the exhaust of direct projection air-flow and be the swirling eddy exhaust, thereby reduced impact, vibration, dirt thing and eliminated Mars.

Comprehensive the above, the utility model is compared with existing technology, has reasonable in designly, simple in structure, changes advantage easily.Be low noise (than the low 3-8 decibel of general silencing apparatus), low-loss (power loss lack 2-8% than general silencing apparatus all the time about 1%), safety (need not add Flue isolation and just can eliminate Mars), to hang down pollution (catharsis is arranged) four kinds of functions be the silencing apparatus of one, and have many uses.

The utility model description of drawings:

Fig. 1 is a structural drawing of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1.

The utility model is further described with embodiment below in conjunction with accompanying drawing.

With reference to figure 1, Fig. 2, in cylindrical body (15), two hole dividing plates (5), (8) be housed form three chambers, on diversion disk (3), (6), (9), respectively adorn 4 guide plates (4), (7), (10), central authorities at front head (2) are provided with suction tude (1), central authorities are provided with outlet pipe with holes (12) at rear head (11), be provided with the exhaust shroud (13) that is about a times than it in the periphery of outlet pipe (12), the right-hand member of spool piece (13) has several inlet holes, and the left end inwall is being fixed triplex glass fiber dust collecting thing (14) with Mild Steel Expanded Sheets.During work, internal-combustion engine suppress flue gas when suction tude (1) enters diversion disk (3) and guide plate (4), the flue gas that flings can become rotation in the air-flow of high speed rotating and the chamber between diversion disk (3) and single hole dividing plate (5), with regard to the centrifugal damping of higher generation, the Mars in the flue gas reduces in rotation or disappears along the air pressure of the inwall of cylindrical body (15) and linear velocity.And rotate again to diversion disk (6) and guide plate (7) at the center hole of the low flue gas of cylindrical body (15) central pressure and linear speed by hole dividing plate (5), after repeating above-mentioned motion through two chambers again, flue gas is just discharged rotatably by the outlet pipe (12) with several apertures.In the process of discharging, the flue gas of rotation can make the Mars in the flue gas disappear under the effect of cylindrical body (15), outlet pipe (12), exhaust shroud (13).This is because Mars is discharged from the aperture on the outlet pipe (12), is deflated the chilled air cools that pipe box (13) enters from right-hand member, and the glass fibre that the dust suction of exhaust shroud (13) inwall is used also can absorb Mars in the flue gas and particulate.Flue gas rotatablely moves to discharging all the time Zi entering the silencing apparatus inner chamber, obstructed again small holes, and just respectively by several macropores, air flue can not stockpiled by carbon distribution and reduce cross section or obstruction, so resistance is little, power loss is also just little, and stable lasting.

Claims

1, a kind of cyclone discharge silencer, constitute by suction tude (1), front head (2), cylindrical body (15), rear head (11) and outlet pipe (12), it is characterized in that on cylindrical body (15) internal chamber wall chamber that connects several frustroconical hole dividing plates (5), (8) at interval and form respective numbers, fix several arc deflectors (4), (7), (10) in each dividing plate back, hole, in the fixing conical diversion disk (3) in the arc deflector back of each chamber, (6), (9).

2, according to the described a kind of cyclone discharge silencer of claim 1, it is characterized in that the rear head middle part is provided with the outlet pipe (12) of tube wall band exhaust port, its periphery is provided with the exhaust shroud (13) of inlet hole.

3,, it is characterized in that exhaust shroud (13) inwall is provided with noise abatement dust suction fibre object (14) according to claim 1 or 2 described a kind of cyclone discharge silencers.

4,, it is characterized in that suction tude (1) can be located at front head central authorities or be located at the side of cylindrical body (15) near end socket according to claim 1 or 2 described a kind of cyclone discharge silencers.

5,, it is characterized in that suction tude (1) can be located at front head central authorities or be located at the side of cylindrical body (16) near front head according to the described a kind of cyclone discharge silencer of claim 3.