CN110230561B - Variable flow resistance silencing assembly composed of multiple silencing sheets - Google Patents
Variable flow resistance silencing assembly composed of multiple silencing sheets Download PDFInfo
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- CN110230561B CN110230561B CN201910540898.4A CN201910540898A CN110230561B CN 110230561 B CN110230561 B CN 110230561B CN 201910540898 A CN201910540898 A CN 201910540898A CN 110230561 B CN110230561 B CN 110230561B
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 11
- 230000003584 silencer Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1222—Flow throttling or guiding by using adjustable or movable elements, e.g. valves, membranes, bellows, expanding or shrinking elements
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention relates to a variable flow resistance silencing assembly consisting of a plurality of silencing pieces, wherein a flow divider is arranged in an air inlet cavity; a flow combiner is arranged in the exhaust cavity and comprises a flow combining cavity; the two ends of the arc-shaped axis of the flow resistance adjusting cavity are respectively provided with a clamping plate, a plurality of flow deflectors are arranged on the clamping plates in an array mode, and the two ends of each flow deflector are fixed in clamping grooves of the two groups of clamping plates; the flow resistance regulator is arranged on the arc-shaped inner side of the flow resistance regulating cavity; the flow resistance adjuster comprises an airflow driving cavity arranged on the arc-shaped inner side of the flow resistance adjusting cavity, a sliding shell is fixed in the airflow driving cavity, the sliding shell is connected with a bearing plate in a sliding mode, a pushing bulge is arranged in the middle of the bearing plate, the front end of the pushing bulge is used for being in contact with a flow deflector at the end part of a flow deflector array, the flow deflector is bent through extrusion of the pushing bulge, a pressure inlet branch pipe is connected to the outer wall of the front end of the airflow driving cavity, and the pressure inlet branch pipe is communicated with the tail end of an auxiliary air inlet pipe A; the tail end of the airflow driving cavity is connected to the front end of the auxiliary air inlet pipe B through a connecting pipe.
Description
Technical Field
The invention relates to a variable flow resistance silencing assembly consisting of a plurality of silencing sheets, belonging to the field of automobile silencers.
Background
The modern industry, turbine engine, variable displacement engine technology with the environmental protection demand promotion, more and more common application to daily vehicle, this kind of technology can be through changing the compression ratio and the displacement of engine unit gas mixture the maximize of efficiency under the different operating modes, but equally, traditional muffler because its exhaust back pressure of design is invariable, so for variable displacement engine, the muffler that the flow resistance is too little when the engine low speed, very easily leads to the exhaust back pressure undersize, the air suction volume is too much in the engine block, the gas mixture is thin, influence the low torsion performance of engine, and the muffler that the flow resistance is too big, when the engine high speed, very easily can't smoothly discharge the sufficient air, lead to the fresh air suction volume in the engine block too low, the gas mixture is too thick, very easily make the engine take place the detonation, influence the engine job stabilization, and excessive exhaust pressure easily generates a large noise in the high resistance muffler.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem that the flow resistance of a silencer in the prior art cannot adapt to a variable displacement engine is solved, and the variable flow resistance silencing assembly formed by multiple silencing sheets is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a variable flow resistance silencing assembly composed of a plurality of silencing sheets comprises a silencer shell; the silencer comprises a silencer shell, a flow resistance control cavity, an air inlet, an air outlet, an air inlet cavity, an air outlet cavity, a flow resistance control cavity, an air inlet, an air outlet, a flow resistance control cavity, an air; the air inlet cavity is internally provided with a flow divider, the flow divider comprises a flow dividing cavity, two ends of the flow dividing cavity are provided with an auxiliary air inlet hole A and an auxiliary air outlet hole A, and the flow dividing cavity is also in penetrating sealing connection with an auxiliary air inlet pipe A; after entering from the air inlet, the tail gas respectively flows to the auxiliary air inlet pipe A and the inner part of the shunt cavity; a flow combiner is arranged in the exhaust cavity, the flow combiner comprises a flow combining cavity, an auxiliary air inlet hole B and an auxiliary exhaust hole B are respectively arranged at two ends of the flow combining cavity, an auxiliary air inlet pipe B is also arranged at one end of the flow combining cavity corresponding to the auxiliary air inlet hole B, the tail end of the auxiliary air inlet pipe B is of a closed structure, and exhaust openings are densely distributed on the surface of the auxiliary air inlet pipe B; a flow resistance controller and a flow resistance regulator are arranged in the flow resistance control cavity; the flow resistance controller comprises a flow resistance adjusting cavity with an arc-shaped axis, two clamping plates are respectively arranged at two ends of the arc-shaped axis of the flow resistance adjusting cavity, a plurality of clamping grooves are arranged on the clamping plates in an array mode, and a flow guide opening is formed between the clamping grooves; a plurality of arc-shaped flow deflectors made of elastic metal materials are arranged between the two groups of clamping plates in an array mode, two ends of each flow deflector are fixed in the clamping grooves of the two groups of clamping plates, and a flow guide gap communicated with the flow guide opening is formed between every two adjacent flow deflectors through the fixation of the clamping grooves; two ends of the flow resistance adjusting cavity are respectively connected with connecting cylinders with gradually reducing structures, namely a connecting cylinder A and a connecting cylinder B, the flaring ends of the connecting cylinder A and the connecting cylinder B are connected to the flow resistance adjusting cavity, the necking end of the connecting cylinder A is connected to the auxiliary exhaust hole A, and the connecting cylinder B is connected to the auxiliary air inlet hole B; the flow resistance regulator is arranged on the arc-shaped inner side of the flow resistance regulating cavity; the flow resistance adjuster comprises an airflow driving cavity arranged on the inner side of the arc-shaped flow resistance adjusting cavity, the outer wall of the airflow driving cavity is in sealing connection with the inner wall of the flow resistance adjusting cavity, a sliding shell is concentrically fixed in the airflow driving cavity, the tail part of the sliding shell is connected to the inner wall of the airflow driving cavity through a connecting sheet made of porous materials, a floating piston is in sliding connection with the middle of the sliding shell and comprises a bearing plate, a pushing bulge is arranged in the middle of the bearing plate, a floating opening is arranged at the front end of the airflow driving cavity, the side wall of the pushing bulge is in sliding sealing connection with the inner wall of the floating opening, the front end of the pushing bulge is used for being in contact with a flow deflector at the rear end part of the flow deflector array, the flow deflector is bent through the extrusion of the pushing bulge, and a limiting bulge for limiting the sliding of the bearing plate, the tail end of the sliding shell is provided with a ventilation plate made of porous materials, the ventilation plate is elastically connected with the pressure bearing plate through a supporting spring, the outer wall of the front end of the airflow driving cavity is connected with a plurality of pressure inlet branch pipes in an annular array mode, the pressure inlet branch pipes are communicated with the airflow driving cavity, each pressure inlet branch pipe is connected to a pressure inlet main pipe, and the pressure inlet main pipes are communicated with the tail end of the auxiliary air inlet pipe A; the tail end of the airflow driving cavity is provided with an exhaust plate made of porous materials, and the tail end of the airflow driving cavity is connected to the front end of the auxiliary air inlet pipe B through a connecting pipe; the invention improves two sections of flow channels of the original silencer into a pressure driving channel and a flow resistance adjusting mechanism, realizes the extrusion driving of the short flow channel to the pressure control mechanism and the buffering of the pipeline pressure on the premise of not changing the length difference of the flow channel of the original silencer, and the long flow channel bears the function of adjusting the flow resistance.
As a further improvement of the invention, a supporting pad formed by a metal net is arranged between adjacent guide vanes, and the supporting pad is adhered to the arc-shaped middle part of each guide vane; the supporting pad can effectively prevent the guide vanes from being bonded because of tail gas oil contamination, so that the exhaust effect is influenced, and meanwhile, good elastic support between the guide vanes is also achieved.
As a further improvement of the invention, the flow divider in the air inlet cavity comprises two groups of flow dividing support plates, namely a support plate B and a support plate A, wherein the support plate A and the support plate B are in sealing contact with the inner wall of the air inlet cavity; the flow divider adopts a supporting plate structure to support and separate, so that the disassembly and maintenance of equipment are easy, the structure is simplified, and the reliability is improved.
As a further improvement of the invention, the confluence device in the exhaust cavity comprises two confluence supporting plates, namely a supporting plate C and a supporting plate D, wherein the supporting plate C and the supporting plate D are in sealing contact with the inner wall of the exhaust cavity, an auxiliary air inlet hole B is processed on the supporting plate C, an auxiliary exhaust hole B is processed on the supporting plate D, a supporting plate E is fixed on the inner wall of the exhaust cavity, and two ends of an auxiliary air inlet pipe B are respectively fixed on the supporting plate C and the supporting plate E.
As a further improvement of the invention, the porous material is a metal sintering net; the metal sintering net has good stability and more uniform density compared with the metal net folding and other forms.
As a further improvement of the invention, the flow deflector is made of a stainless steel sheet.
The invention has the beneficial effects that:
the invention designs a flow resistance adjusting mechanism driven by exhaust back pressure, realizes the adjustment of the flow resistance by utilizing the driving force under different exhaust pressures so as to adapt to the exhaust requirements of engines under different working conditions, and has simple structure and high applicability.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic cross-sectional view of the present invention;
in the figure: 1. a muffler housing; 2. an exhaust port; 3. an air inlet; 4. a shunting cavity; 5. a support plate A; 6. a support plate B; 7. an auxiliary air inlet hole A; 8. an auxiliary exhaust hole A; 9. an auxiliary air inlet pipe A; 10. a pressure inlet main pipe; 11. a confluence cavity; 12. a support plate D; 13. a support plate C; 14. an auxiliary air inlet hole B; 15. a support plate E; 16. an auxiliary air inlet pipe B; 17. an auxiliary exhaust hole B; 18. a connecting cylinder A; 19. a connecting cylinder B; 20. a flow resistance adjusting chamber; 21. a flow deflector; 22. a clamping groove; 23. a splint; 24. pushing the bulge; 25. feeding pressure and dividing the pipes; 26. an airflow driving cavity; 27. a sliding shell; 28. a support pad; 29. a pressure bearing plate; 30. a floating opening; 31. a support spring; 32. connecting sheets; 33. a ventilation board; 34. an exhaust plate; 35. an exhaust opening.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in FIG. 1, the present invention is a variable flow resistance muffler assembly with multiple muffling sheets, comprising a muffler shell; the silencer comprises a silencer shell, a flow resistance control cavity, an air inlet, an air outlet, an air inlet cavity, an air outlet cavity, a flow resistance control cavity, an air inlet, an air outlet, a flow resistance control cavity, an air;
the air inlet cavity is internally provided with a flow divider, the flow divider comprises a flow dividing cavity, the flow dividing cavity comprises two groups of flow dividing supporting plates, namely a supporting plate B and a supporting plate A, the supporting plate A and the supporting plate B are in sealing contact with the inner wall of the air inlet cavity, two ends of the flow dividing cavity are provided with an auxiliary air inlet hole A and an auxiliary air outlet hole A, the auxiliary air inlet hole A is processed on the supporting plate A, the auxiliary air outlet hole A is processed on the supporting plate B, and two ends of the auxiliary air inlet pipe A are respectively fixed on the supporting plate; after entering from the air inlet, the tail gas respectively flows to the auxiliary air inlet pipe A and the inner part of the shunting cavity through the auxiliary air inlet pipe A and the auxiliary air inlet pipe A;
the air exhaust cavity is internally provided with a flow combiner, the flow combiner comprises a flow combining cavity, two ends of the flow combining cavity comprise two groups of flow combining supporting plates which are respectively a supporting plate C and a supporting plate D, the supporting plate C and the supporting plate D are in sealing contact with the inner wall of the air exhaust cavity, two ends of the flow combining cavity are respectively provided with an auxiliary air inlet hole B and an auxiliary air outlet hole B, the auxiliary air inlet hole B is processed on the supporting plate C, the auxiliary air outlet hole B is processed on the supporting plate D, one end of the flow combining cavity corresponding to the auxiliary air inlet hole B is also provided with an auxiliary air inlet pipe B, the inner wall of the air exhaust cavity is also fixedly provided with a supporting plate E, two ends of the auxiliary air inlet pipe B are respectively fixed on the supporting plate C and the supporting plate;
a flow resistance controller and a flow resistance regulator are arranged in the flow resistance control cavity;
the flow resistance controller comprises a flow resistance adjusting cavity with an arc-shaped axis, two clamping plates are respectively arranged at two ends of the arc-shaped axis of the flow resistance adjusting cavity, a plurality of clamping grooves are arranged on the clamping plates in an array mode, and a flow guide port is arranged between the clamping grooves; a plurality of arc-shaped flow deflectors made of stainless steel sheets are arranged between the two groups of clamping plates in an array mode, two ends of each flow deflector are fixed in clamping grooves of the two groups of clamping plates, a flow guide gap communicated with the flow guide opening is formed between every two adjacent flow deflectors through the fixation of the clamping grooves, a supporting pad formed by a metal net is arranged between every two adjacent flow deflectors, and the supporting pad is adhered to the arc-shaped middle part of each flow deflector; two ends of the flow resistance adjusting cavity are respectively connected with connecting cylinders with gradually reducing structures, namely a connecting cylinder A and a connecting cylinder B, the flaring ends of the connecting cylinder A and the connecting cylinder B are connected to the flow resistance adjusting cavity, the necking end of the connecting cylinder A is connected to the auxiliary exhaust hole A, and the connecting cylinder B is connected to the auxiliary air inlet hole B;
the flow resistance regulator is arranged on the arc-shaped inner side of the flow resistance regulating cavity; the flow resistance adjuster comprises an airflow driving cavity arranged on the arc-shaped inner side of the flow resistance adjusting cavity, the outer wall of the airflow driving cavity is in sealing connection with the inner wall of the flow resistance adjusting cavity, a sliding shell is concentrically fixed in the airflow driving cavity, the tail part of the sliding shell is connected to the inner wall of the airflow driving cavity through a connecting sheet made of porous material, a floating piston is connected to the middle part of the sliding shell in a sliding manner and comprises a pressure bearing plate, a pushing bulge is arranged in the middle of the pressure bearing plate, a floating opening is arranged at the front end of the airflow driving cavity, the side wall of the pushing bulge is in sliding sealing connection with the inner wall of the floating opening, the front end of the pushing bulge is used for being in contact with a flow deflector at the end part of a flow deflector array, the flow deflector is bent through extrusion of the pushing bulge, a limiting bulge for limiting the sliding of the pressure bearing plate is arranged at the front end of, the ventilation plate is elastically connected with the pressure bearing plate through a supporting spring, a plurality of pressure inlet branch pipes are connected to the outer wall of the front end of the airflow driving cavity in an annular array mode, the pressure inlet branch pipes are communicated with the airflow driving cavity, each pressure inlet branch pipe is connected to one pressure inlet main pipe, and the pressure inlet main pipes are communicated with the tail end of the auxiliary air inlet pipe A; the tail end of the airflow driving cavity is provided with an exhaust plate made of porous materials, and the tail end of the airflow driving cavity is connected to the front end of the auxiliary air inlet pipe B through a connecting pipe;
the porous material is a metal sintered mesh.
The tail gas of the structure is sucked into the tail gas through an air inlet connected with an exhaust manifold of an engine, the tail gas is divided into two sections through a flow divider, one section of air flow enters a flow dividing cavity from a secondary air inlet A, then is discharged into a connecting cylinder A through a secondary exhaust hole A after being buffered in the flow dividing cavity, then enters a flow guide gap between flow guide sheets to be subjected to flow resistance regulation, then can be subjected to air inlet and exhaust through a connecting cylinder B, finally is discharged into a converging cavity again, is discharged into an exhaust hole through a secondary exhaust hole B, is discharged through the exhaust hole, and the rest part of the tail gas can be extruded to a main inlet pressure pipe through a secondary air inlet pipe A, is subjected to separation pressurization through a branch pipe on a main inlet pressure pipe, then enters an air flow driving cavity, is extruded to a pressure bearing plate through the exhaust pressure of the branch pipe, and passes through the connecting sheet and the exhaust plate after extrusion, finally, the gas enters an auxiliary gas inlet pipe B, an exhaust opening on the auxiliary gas inlet pipe B is converged in a converging cavity, and finally the flow difference of two groups of tail gas is utilized to realize noise reduction;
when the structure is used, the supporting spring pushes the bearing plate under the default condition, so that the pushing protrusions extrude the guide vanes, and the supporting pads between the guide vanes are extruded, so that the gap between the whole guide vane array is reduced, the flow resistance is increased, and the displacement per unit time is smaller at low rotating speed, so that the displacement of the bearing plate is smaller, the gap between the guide vanes is smaller under the extrusion of the supporting spring, so that higher exhaust resistance is ensured, the pressure in an engine cylinder is improved, and higher low-speed torque is ensured; when the rotating speed is large, the exhaust pressure can be improved, the exhaust pressure can extrude the bearing plate to move, the extrusion force received by the flow guide plates is reduced, the gap between the flow guide plates is increased, the flow resistance is reduced, the good exhaust rate and the air suction efficiency of the engine are ensured, the rotating speed of the engine is better adapted, the turbulent flow caused by the overlarge flow resistance is reduced, and the lower turbulent flow can ensure smaller flowing noise.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A variable flow resistance silencing assembly composed of a plurality of silencing pieces is characterized in that: comprises a silencer casing; the silencer comprises a silencer shell, a flow resistance control cavity, an air inlet, an air outlet, an air inlet cavity, an air outlet cavity, a flow resistance control cavity, an air inlet, an air outlet, a flow resistance control cavity, an air; the air inlet cavity is internally provided with a flow divider, the flow divider comprises a flow dividing cavity, two ends of the flow dividing cavity are provided with an auxiliary air inlet hole A and an auxiliary air outlet hole A, and the flow dividing cavity is also in penetrating sealing connection with an auxiliary air inlet pipe A; after entering from the air inlet, the tail gas respectively flows to the auxiliary air inlet pipe A and the inner part of the shunt cavity; a flow combiner is arranged in the exhaust cavity, the flow combiner comprises a flow combining cavity, an auxiliary air inlet hole B and an auxiliary exhaust hole B are respectively arranged at two ends of the flow combining cavity, an auxiliary air inlet pipe B is also arranged at one end of the flow combining cavity corresponding to the auxiliary air inlet hole B, the tail end of the auxiliary air inlet pipe B is of a closed structure, and exhaust openings are densely distributed on the surface of the auxiliary air inlet pipe B; a flow resistance controller and a flow resistance regulator are arranged in the flow resistance control cavity; the flow resistance controller comprises a flow resistance adjusting cavity with an arc-shaped axis, two clamping plates are respectively arranged at two ends of the arc-shaped axis of the flow resistance adjusting cavity, a plurality of clamping grooves are arranged on the clamping plates in an array mode, and a flow guide opening is formed between the clamping grooves; a plurality of arc-shaped flow deflectors made of elastic metal materials are arranged between the two groups of clamping plates in an array mode, two ends of each flow deflector are fixed in the clamping grooves of the two groups of clamping plates, and a flow guide gap communicated with the flow guide opening is formed between every two adjacent flow deflectors through the fixation of the clamping grooves; two ends of the flow resistance adjusting cavity are respectively connected with connecting cylinders with gradually reducing structures, namely a connecting cylinder A and a connecting cylinder B, the flaring ends of the connecting cylinder A and the connecting cylinder B are connected to the flow resistance adjusting cavity, the necking end of the connecting cylinder A is connected to the auxiliary exhaust hole A, and the connecting cylinder B is connected to the auxiliary air inlet hole B; the flow resistance regulator is arranged on the arc-shaped inner side of the flow resistance regulating cavity; the flow resistance adjuster comprises an airflow driving cavity arranged on the inner side of the arc-shaped flow resistance adjusting cavity, the outer wall of the airflow driving cavity is in sealing connection with the inner wall of the flow resistance adjusting cavity, a sliding shell is concentrically fixed in the airflow driving cavity, the tail part of the sliding shell is connected to the inner wall of the airflow driving cavity through a connecting sheet made of porous materials, a floating piston is in sliding connection with the middle of the sliding shell and comprises a bearing plate, a pushing bulge is arranged in the middle of the bearing plate, a floating opening is arranged at the front end of the airflow driving cavity, the side wall of the pushing bulge is in sliding sealing connection with the inner wall of the floating opening, the front end of the pushing bulge is used for being in contact with a flow deflector at the rear end part of the flow deflector array, the flow deflector is bent through the extrusion of the pushing bulge, and a limiting bulge for limiting the sliding of the bearing plate, the tail end of the sliding shell is provided with a ventilation plate made of porous materials, the ventilation plate is elastically connected with the pressure bearing plate through a supporting spring, the outer wall of the front end of the airflow driving cavity is connected with a plurality of pressure inlet branch pipes in an annular array mode, the pressure inlet branch pipes are communicated with the airflow driving cavity, each pressure inlet branch pipe is connected to a pressure inlet main pipe, and the pressure inlet main pipes are communicated with the tail end of the auxiliary air inlet pipe A; an exhaust plate made of porous materials is arranged at the tail end of the airflow driving cavity, and the tail end of the airflow driving cavity is connected to the front end of the auxiliary air inlet pipe B through a connecting pipe.
2. The variable flow resistance muffler assembly of claim 1, wherein: a supporting pad formed by a metal net is arranged between the adjacent flow deflectors, and the supporting pad is adhered to the arc-shaped middle part of each flow deflector.
3. The variable flow resistance muffler assembly of claim 1, wherein: the air inlet cavity is internally provided with a flow divider, the air inlet cavity is internally provided with an air inlet hole A, an air outlet hole A and an auxiliary air inlet hole B, the flow divider in the air inlet cavity comprises two groups of flow dividing supporting plates, namely a supporting plate B and a supporting plate A, the supporting plate A and the supporting plate B are in sealing contact with the inner wall of the air inlet cavity, the auxiliary air inlet hole A is processed on the supporting plate A, the auxiliary air outlet hole A is processed on the.
4. The variable flow resistance muffler assembly of claim 1, wherein: the air exhaust cavity is internally provided with a flow combiner, the flow combiner comprises two groups of flow combining supporting plates, namely a supporting plate C and a supporting plate D, the supporting plate C and the supporting plate D are in sealing contact with the inner wall of the air exhaust cavity, an auxiliary air inlet hole B is processed on the supporting plate C, an auxiliary air exhaust hole B is processed on the supporting plate D, a supporting plate E is further fixed on the inner wall of the air exhaust cavity, and two ends of an auxiliary air inlet pipe B are fixed on the supporting plate C and the supporting plate E respectively.
5. The variable flow resistance muffler assembly of claim 1, wherein: the porous material is a metal sintering net.
6. The variable flow resistance muffler assembly of claim 1, wherein: the flow deflector is made of a stainless steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540898.4A CN110230561B (en) | 2019-06-21 | 2019-06-21 | Variable flow resistance silencing assembly composed of multiple silencing sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540898.4A CN110230561B (en) | 2019-06-21 | 2019-06-21 | Variable flow resistance silencing assembly composed of multiple silencing sheets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110230561A CN110230561A (en) | 2019-09-13 |
| CN110230561B true CN110230561B (en) | 2020-07-31 |
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ID=67856407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910540898.4A Active CN110230561B (en) | 2019-06-21 | 2019-06-21 | Variable flow resistance silencing assembly composed of multiple silencing sheets |
Country Status (1)
| Country | Link |
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| CN (1) | CN110230561B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2141136A1 (en) * | 1971-08-11 | 1973-02-15 | Blatt Leland F | PRESSURE RELIEF DEVICE FOR A SILENCER |
| US4977977A (en) * | 1988-06-17 | 1990-12-18 | Delta Aero Flow Inc. | Marine engine external exhaust noise suppressor with swim platform |
| CN1530523A (en) * | 2003-03-14 | 2004-09-22 | 海因里希・吉勒特有限责任公司 | Silencer with variable damp characteristics |
| CN203223283U (en) * | 2013-05-03 | 2013-10-02 | 粱志强 | Open-closed type adjustable valve exhaust pipe |
| CN107246306A (en) * | 2017-08-09 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of muffler ASSY |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533628A (en) * | 1991-07-26 | 1993-02-09 | Toyota Motor Corp | Exhaust silencer |
-
2019
- 2019-06-21 CN CN201910540898.4A patent/CN110230561B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2141136A1 (en) * | 1971-08-11 | 1973-02-15 | Blatt Leland F | PRESSURE RELIEF DEVICE FOR A SILENCER |
| US4977977A (en) * | 1988-06-17 | 1990-12-18 | Delta Aero Flow Inc. | Marine engine external exhaust noise suppressor with swim platform |
| CN1530523A (en) * | 2003-03-14 | 2004-09-22 | 海因里希・吉勒特有限责任公司 | Silencer with variable damp characteristics |
| CN203223283U (en) * | 2013-05-03 | 2013-10-02 | 粱志强 | Open-closed type adjustable valve exhaust pipe |
| CN107246306A (en) * | 2017-08-09 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of muffler ASSY |
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| Publication number | Publication date |
|---|---|
| CN110230561A (en) | 2019-09-13 |
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