CN2441979Y

CN2441979Y - Double tube silencer for engine

Info

Publication number: CN2441979Y
Application number: CN 00245727
Authority: CN
Inventors: 毛毳
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-04
Filing date: 2000-08-04
Publication date: 2001-08-08
Anticipated expiration: 2010-08-04

Abstract

The utility model relates to a double-pipe silencer for engines. An air inlet pipe, an air exhaust pipe and an air guide pipe are arranged in an outer shell of the utility model. The outer shell is divided into a plurality of radiation sound chambers and/or resonance sound chambers by a front and a back end cover and a plurality of baffles. Inner pipes are arranged in the air inlet pipe and/or the air exhaust pipe and/or the air guide pipe of the outer shell. A structure of double pipes is formed by welding or integral molding. The utility model can effectively reduces noises of engines. The utility model has the advantages of simple structure, good silencing effect and series specification. The utility model is suitable for engines of various types.

Description

The muffler for motor of dual pipe

The utility model relates to muffler for motor a kind of and the dual pipe that the motor engine exhaust gas pipe connects.

At present, the silencing apparatus that is used for motor car engine reduction noise mainly is made of oblate type shell, air inlet and exhaust piper, forward and backward end cap, dividing plate etc., the suction tude, outlet pipe and the air pipe that are provided with in its shell are the mono-layer tube structure, and erasure effect is undesirable.

It is a kind of simple in structure that the purpose of this utility model is to provide, and can reduce the muffler for motor of the dual pipe of engine noise effectively.

The purpose of this utility model is achieved in that a kind of muffler for motor of dual pipe, comprise shell, air inlet and exhaust piper, forward and backward end cap, dividing plate, metal screen cloth, be provided with air inlet and exhaust piper, air pipe in its shell, forward and backward end cap and polylith dividing plate will be divided into several sound-radiation chamber and/or resonance sound chamber in the shell, it is characterized in that being provided with interior pipe in suction tude, outlet pipe, at least one pipe of air pipe, constitute double-sleeve structure through welding or global formation;

The muffler for motor of described dual pipe, the hollow frustum pipe of Guan Weiyi in it is characterized in that.

The utility model has improved the available engine acoustic wave filter structure, in silencing apparatus air inlet and exhaust piper, air pipe, be provided with interior pipe, make it to constitute double-sleeve structure, can reduce engine noise effectively, compare with existing silencing apparatus and can reduce noise about 4%, the utility model is simple in structure, good muffling effect, and the motor car engine that can be suitable for various models is installed and used.

Description of drawings

Fig. 1 is the plan view of the utility model structural representation;

Fig. 2 is the right elevation of the utility model structural representation;

Fig. 3 is a double-sleeve structure schematic representation of the present utility model;

Fig. 4 is an A-A view among Fig. 3.

The utility model is described in further detail below in conjunction with drawings and Examples:

Consult Fig. 1, shown in Figure 2, the muffler for motor of dual pipe, be provided with suction tude 1 in the shell 4 of its oblate type, outlet pipe 8, air pipe 5 and dividing plate 3 or metal screen cloth, can be provided with porous on suction tude 1 and outlet pipe 8 tube walls, it also can be non-perforated pipe, before,

rear end cover

9,6 can be with shell 4 welding or with shell 4 global formations, shell 4 inner route clapboards 3 are divided into sound-radiation chamber and/or resonance sound chamber 7, the combustion-gas flow of motor reduces noise from outlet pipe 8 discharges through sound-radiation chamber and/or resonance sound chamber 7 circulation backs, improvement structure of the present utility model is a pipe 2 in being provided with in suction tude 1 and/or outlet pipe 8 and/or air pipe 5, can adopt welded connection or global formation, make it to constitute double-sleeve structure, double dot dash line is represented all can be provided with interior pipe in suction tude and outlet pipe and three pipes of air pipe among the figure; Can be provided with interior pipe separately in every pipe of suction tude or outlet pipe or air pipe; Can be provided with interior pipe in two pipes of suction tude and outlet pipe; Can be provided with interior pipe in two pipes of suction tude and air pipe; Can be provided with interior pipe in two pipes of outlet pipe and air pipe; Pipe 2 can be arranged in above-mentioned each root pipe simultaneously or is separately positioned on wherein in the pipe or wherein in two pipes, reaches the purpose of the combustion noise that reduces motor promptly.

Consult Fig. 3, shown in Figure 4, pipe 2 is a hollow frustum pipe in it, can be arranged on a section in air inlet and exhaust piper, the air pipe and/or manage the position entirely, constitutes double-sleeve structure with air inlet and exhaust piper, air pipe through welding or global formation.

The number of the utility model air inlet and exhaust piper, air pipe and the position is set; the number of dividing plate and sound-radiation chamber and/or resonance sound chamber and setting; can design according to the different model motor car engine; be existing silencing apparatus technology; be not restricted to the described embodiments; the utility model is intended to protect the muffler for motor of double-sleeve structure, can in existing noise elimination organ pipe interior pipe be housed, and produces the muffler for motor of the dual pipe of seriation of different size model.

Claims

1, a kind of muffler for motor of dual pipe, comprise shell, air inlet and exhaust piper, forward and backward end cap, dividing plate, metal screen cloth, be provided with air inlet and exhaust piper, air pipe in its shell, forward and backward end cap and polylith dividing plate will be divided into several sound-radiation chamber and/or resonance sound chamber in the shell, it is characterized in that being provided with interior pipe (2) in suction tude (1), outlet pipe (8), at least one pipe of air pipe (5), constitute double-sleeve structure through welding or global formation.

2, the muffler for motor of dual pipe according to claim 1 is characterized in that interior pipe (2) is a hollow frustum pipe.