RU2159338C1 - Muffler with cleaner - Google Patents

Abstract

FIELD: mechanical engineering; diesel engine mufflers. SUBSTANCE: proposed muffler has cylindrical housing with gas branch pipe. Muffler is furnished with fan installed between gas feed branch pipe and filter unit. Cone rigidly secured in center of fan is pointed with its to inlet branch pipe made in form of truncated cone secured by base in end face part of housing. End face part of housing is made concave in its middle part and is provided with drain hole. Part of housing after filter unit is perforated. Cover is secured on opposite end of housing. Noise-damping cloth is placed under cover. EFFECT: simplified design, reduced level of exhaust noises. 2 cl, 1 dwg

Description

 The invention relates to mechanical engineering, in particular to engine building, and in particular to exhaust silencers equipped with a gas purifier, mainly a diesel internal combustion engine.

 Known silencer exhaust, mainly a diesel internal combustion engine, containing a cylindrical body with inlet and outlet nozzles and a screw, made in the form of a screw perforated plate and mated with the outer parts with the inner surface of the body, while it is equipped with an assembly tank made in the form of a parallelepiped with the first and the second side walls, paired with the housing in the diametrical plane of the latter, and the part of the housing located in the assembly tank is made gas ronitsaemoy and inside filter lined with sound-absorbing material (a. a. N 1467229, F 01 N 1/12, 3/02). This design is difficult to manufacture and operate, since it is made without the possibility of disassembling and removing parts for filter change and cleaning the perforated holes from soot, which will lead to a decrease in the quality of exhaust gas cleaning and, in the future, when these holes are clogged, to the inability to use a muffler.

 The closest analogue to the claimed device includes a silencer comprising a housing with gas supply and gas outlet pipes and a cylindrical filtration unit located in the housing with a gap, the housing is equipped with a swirler installed between the gas supply pipe and the filtration unit, the side surface of the latter is made tubular, and in the gap between the side the surface of the filtration unit with the housing around the perimeter placed radial plate with a filter cloth. The swirl is made in the form of a cone of flat tangential plates. The gas outlet pipe is made of two parts located coaxially. Oxalon was used as a filter cloth (A.S. N 1719671, F 01 N 3/08).

 This device does not allow quality to reduce exhaust noise. The design is difficult to manufacture. The objective of the invention is to simplify the design of the silencer and reduce the noise level of exhaust gases.

 The problem is solved due to the fact that the muffler, equipped with a cleaning agent, comprising a cylindrical body with a gas supply pipe, equipped with a swirl installed between the gas pipe and the filtration unit. A fan was used as a swirl, in the center of which a cone is rigidly fixed, with its apex directed towards the inlet pipe, made in the form of a truncated cone, with a base fixed to the end part of the body, made in its middle concave and having a drain hole. Part of the housing after the filtration unit is perforated. A cover is attached to the opposite end of the housing, under which a sound-absorbing fabric is installed. In this case, the central axes of the fan, cone and inlet pipe coincide.

 New significant features.

 1. As a swirler, a fan is used, rigidly fixed to the casing.

 2. In the center of the fan, a cone is rigidly fixed, with its apex directed towards the inlet pipe.

 3. The inlet pipe is made in the form of a truncated cone, the base fixed to the end of the cone.

 4. The end part of the body in its middle is concave and has a drain hole.

 5. Part of the housing after the filtration unit is perforated.

 6. A cover is attached to the opposite end of the housing, under which a sound-absorbing fabric is installed.

 7. The central axes of the fan, housing and inlet pipe are the same.

 The listed new essential features in conjunction with the known ones provide a technical result in all cases to which the requested amount of legal protection applies.

 These signs allow you to get a technical result due to the fact that the exhaust gases, passing through the pipe inserted into the exhaust pipe, fall on the fan blades, set it in motion and are scattered throughout the filter area. Drops of oil, hitting a cone, under the action of centrifugal force fall on the fan blades, from which they are deposited on the walls of the casing and flow down. Exhaust gases pass through a carbon-fiber filter, in which they are cleaned and partially reduce noise.

 Leaving the filter installed in the support-seals, the exhaust gases hit the noise-absorbing material, where they lose speed and change direction when reflected, which contributes to further noise reduction.

 Purified gas enters the atmosphere through openings located in the upper part of the device. The nozzle is made in the form of a cone in order to enable the device to be operated on aggregates with exhaust pipes of different diameters. Simplification of the design is due to the minimization of its constituent elements, the manufacturability of its manufacture and maintenance.

 The drawing shows a schematic sectional view of a muffler equipped with a cleaning agent.

 The muffler equipped with a cleaning agent comprises a housing 1 having a drain hole 3 at the end 2 closed by a plug 4. Moreover, the end 2 in its middle part is made concave. The fan 5 is rigidly attached to the side walls of the housing 1 using, for example, brackets 6 on the support 7. In the center of the fan 5, a cone is rigidly fixed 8. To the end 2 of the housing 1 is fixed the base of the inlet pipe 9, made in the form of a truncated cone, above the fan 5 a filtration unit 10 is located, consisting, for example, of a three-layer carbon-fiber filter fixed in support seals 11. The part of the housing 1 located after the filtration assembly 10 has perforated holes 12. At the opposite end of the housing 1 is fixed cover 13, under which is located a sound-absorbing fabric 14.

 For better sealing of the device with the exhaust pipe in the upper part of the pipe with a clamp 15, a rubber layer 16 is attached, which is put on top of the exhaust pipe and is fixed with a clamp 17.

 The muffler works as follows. The muffler is mounted on the exhaust pipe and secured with clamps 15 and 17. Exhaust gases flow through the inlet pipe 9 into the muffler housing 1 and fall on the fan blades 5, dispersed by the cone 8. The fan blades 5 begin to rotate. Drops of oil, hitting a cone 8, under the action of centrifugal force fall on the fan blades 5, from which they are deposited on the walls of the housing 1 and the rod down. The exhaust gases pass through a carbon fiber filter 10, in which they are cleaned and partially reduce noise.

 Leaving the filter 10 installed in the bearings-seals 11, the off gases hit the sound-absorbing material 14, where they lose speed and change direction when reflected, which contributes to further noise reduction.

 The purified gas enters the atmosphere through openings 12 located in the upper part of the device body 1.

Claims (1)

 A muffler equipped with a cleaning agent, comprising a cylindrical body with a gas supply pipe, equipped with a swirl installed between the gas supply pipe and the filtration unit, characterized in that the fan is used as a swirl rigidly mounted on the body, in the center of the fan a cone is rigidly fixed, with its apex pointing to the inlet a nozzle made in the form of a truncated cone, the base fixed to the end of the housing, made in its middle concave and having a drain hole, part of the housing after the filtration unit is perforated, and a cover is fixed on the opposite end of the housing, under which a sound-absorbing fabric is installed, while the central axes of the fan, housing, cone and inlet pipe are the same.