CN201258774Y

CN201258774Y - Silencer for diesel engine

Info

Publication number: CN201258774Y
Application number: CNU2008201723667U
Authority: CN
Inventors: 邹吉新; 吴忠友; 张秋长
Original assignee: Weihai Zhongfu Xigang Ship Co Ltd
Current assignee: Weihai Zhongfu Xigang Ship Co Ltd
Priority date: 2008-09-27
Filing date: 2008-09-27
Publication date: 2009-06-17
Anticipated expiration: 2018-09-27

Abstract

The utility model relates to an internal combustion engine, in particular to a diesel engine muffler for a ship, which comprises a shell, an air inlet pipe and an air outlet pipe. The utility model is characterized in that the air inlet pipe is a closed sleeve which consists of an inner pipe and an outer pipe; the outer pipe of the sleeve is provided with a water feeding pipe; the inner pipe of the sleeve is provided with spray holes; the water feeding pipe is generally arranged at one end of the sleeve; and the spray holes are generally arranged at the other end of the sleeve and in a ring shape. The water and waste gas sprayed out of the spray holes are mixed; the high-temperature waste gas exhausted by the internal combustion engine can be rapidly reduced below 80 DEG C; and then the heat resistance requirements for the muffler and the exhaust pipe are greatly lowered, so that the muffler and the exhaust pipe can be made of composite material with good heat resistance instead of steel materials. When the muffler made of composite material is impacted by the waste gas generated by the internal combustion engine, the shock and noise reflection thereof are lower than the shock and noise reflection generated by the muffler made of metal material. Therefore, the utility model has better silencing effects than the conventional steel muffler, and effectively prolongs the service life of the muffler and the exhaust pipe.

Description

The diesel engine baffler

Technical field:

The utility model relates to internal-combustion engine, the diesel engine baffler that specifically a kind of boats and ships are used.

Background technique:

As everyone knows, boats and ships are traffic tool on the water, its power plant generally adopt diesel engine, diesel engine is provided with baffler, the effect of baffler is that the very noisy that the waste gas of discharging when diesel engine is worked produces absorbs, to eliminate, reduce the pollution of noise to environment, exhaust resistance and erasure effect are mutual restriction, exhaust resistance directly influences the efficient of diesel engine again, so the requirement to baffler is that exhaust resistance is as far as possible little, sound-damping qualities is high as far as possible, baffler is provided with housing, the tracheae of going into that connects internal-combustion engine vent-pipe extends in the muffler shell and be arranged in parallel, the steam outlet pipe that another root is set in parallel in the housing is equally drawn the muffler shell the other end, steam outlet pipe in the housing is provided with breeder tube, the axis of breeder tube becomes 90 degree with the acoustic wave propagation direction, make the sound wave width of cloth penetrate the area minimum, suppressing sound wave outwards propagates by breeder tube, the exhaust gas pressure of pulsation is in baffler after the expansion absorption, discharge by breeder tube, to alleviate the noise that pulsing airflow produces air shock, the method that the sound absorber flitch is set in muffler shell that also has reduces noise, this baffler is because because of for a long time under the high-temp waste gas effect, be easy to damage, the heat waste in the waste gas is fallen in addition.

Summary of the invention:

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, but the diesel engine baffler of a kind of heat? recovery, long service life, good muffling effect is provided.

The utility model can reach by following measure:

A kind of diesel engine baffler, comprise housing, suction tude and steam outlet pipe, it is characterized in that the closed casing that suction tude is made up of interior pipe and outer tube, the outer tube of sleeve pipe is provided with intake pipe, the interior pipe of sleeve pipe is provided with spray apertures, intake pipe generally is located at an end of sleeve pipe, and spray apertures generally is located at the other end of sleeve pipe, and spray apertures distributes ringwise.

The utility model can be provided with weep hole on muffler shell, weep hole is connected with heat exchanger through conduit, to make full use of the energy.

The utility model suction tude can be connected with baffler by the heat resistant rubber bellows, so that venting gas appliance can carry out bending or flexible according to the concrete condition of boats and ships well.

The water and the waste gas of the ejection of the utility model spray apertures mix, the high-temp waste gas that internal-combustion engine is discharged is reduced to rapidly below 80 degree, so greatly reduce making the heat-resisting requirement of baffler and outlet pipe, make baffler and outlet pipe can adopt the good composite material of resistance to heat to replace steel, the baffler that composite material is produced, when being subjected to the back blast of internal-combustion engine discharge, vibrations that produced and echo are all more much smaller than the metallic material, traditional steel baffler that its erasure effect compares is far better, has effectively prolonged the working life of baffler and outlet pipe.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of suction tude in the utility model.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described:

As shown in drawings, a kind of diesel engine baffler, comprise housing 1, suction tude 2 and steam outlet pipe 3, it is characterized in that suction tude 2 serve as reasons in the closed casing formed of pipe 4 and outer tube 5, the outer tube 5 of sleeve pipe is provided with intake pipe 6, the interior pipe 5 of sleeve pipe is provided with spray apertures 7, intake pipe 6 generally is located at an end of sleeve pipe, spray apertures 7 generally is located at the other end of sleeve pipe, spray apertures distributes ringwise, the utility model can be provided with weep hole 8 on muffler shell 1, weep hole 8 is connected with heat exchanger 10 through conduit, heat exchanger 10 and existing liquid, the liquid heat exchanger is identical, this does not give unnecessary details, the utility model suction tude 2 can set up, suction tude 2 is connected with baffler through the heat resistant rubber bellows, with can be well according to locomotive, the concrete condition of boats and ships etc. is carried out bending or flexible, made things convenient for installation, the water and the waste gas of the ejection of the utility model spray apertures mix, the high-temp waste gas that internal-combustion engine is discharged is reduced to rapidly below 80 degree, so greatly reduce making the heat-resisting requirement of baffler and outlet pipe, make baffler and outlet pipe can adopt the good composite material of resistance to heat to replace steel, the baffler that composite material is produced, when being subjected to the back blast of internal-combustion engine discharge, vibrations that produced and echo are all more much smaller than the metallic material, traditional steel baffler that its erasure effect compares is far better, has effectively prolonged the working life of baffler and outlet pipe.

Claims

1, a kind of diesel engine baffler comprises housing, suction tude and steam outlet pipe, it is characterized in that the closed casing that suction tude is made up of interior pipe and outer tube, and the outer tube of sleeve pipe is provided with intake pipe, and the interior pipe of sleeve pipe is provided with spray apertures, and spray apertures distributes ringwise.

2, a kind of diesel engine baffler according to claim 1 is characterized in that muffler shell is provided with weep hole, and weep hole is connected with heat exchanger through conduit.

3 a kind of diesel engine bafflers according to claim 1 is characterized in that suction tude can be connected with baffler by the heat resistant rubber bellows.