CN101688461A - Apparatus for removing exhaust gas pressure and preventing backflow of exhaust gas - Google Patents
Apparatus for removing exhaust gas pressure and preventing backflow of exhaust gas Download PDFInfo
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- CN101688461A CN101688461A CN200780053363A CN200780053363A CN101688461A CN 101688461 A CN101688461 A CN 101688461A CN 200780053363 A CN200780053363 A CN 200780053363A CN 200780053363 A CN200780053363 A CN 200780053363A CN 101688461 A CN101688461 A CN 101688461A
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- fixed tube
- exhaust
- gas
- outlet pipe
- exhaust gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
- F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
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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)
- Characterised By The Charging Evacuation (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
An apparatus for removing exhaust gas pressure and preventing backflow of exhaust gas is disclosed. The apparatus of the present invention includes a mounting pipe (100), which is fitted over the endof an exhaust gas pipe of an internal combustion engine and has therein backflow gas guide holes (102) at positions adjacent to the exhaust gas pipe, and a secondary exhaust gas pipe (110), which surrounds the mounting pipe. In the apparatus, a backflow passage (120) is defined between the mounting pipe and the secondary exhaust gas pipe, so that a backf lowing portion of exhaust gas, which is discharged from the mounting pipe, is drawn into the backflow passage and is guided into the mounting pipe through the backflow gas guide holes, and the guided backflow gas is discharged outside again. Therefore, the present invention prevents backflow gas from being drawn into the exhaust gas pipe, thus enhancing the performance of the internal combustion engine.
Description
Technical field
Present invention relates in general to a kind of elimination exhaust pressure (exhaust gas pressure) and prevent the device of exhaust gas recirculation (exhaust pulses), especially so a kind of device of eliminating exhaust pressure and preventing exhaust gas recirculation, comprise: fixed tube (mounting pipe), be installed on from internal-combustion engine extended outlet pipe rear end or boiler flue rear end, and have along forming a plurality of reflux gas guide holes (backflow gas guide hole) in the line of outer surface; And second exhaust pipe, be centered around fixed tube and be provided with on every side, discharge the return flow line that direction is opened formation thereby between fixed tube and second exhaust pipe, limit to waste gas from above-mentioned reflux gas guide hole.
Therefore, the reflux gas (exhaust pulses) that refluxes in the waste gas that can discharge by fixed tube is directed to the return flow line that is formed between second exhaust pipe and the fixed tube, and the reflux gas that is guided moves to fixed tube inside by the reflux gas guide hole, be expelled to the outside with the waste gas of discharging subsequently, thereby prevent that reflux gas is back in the outlet pipe.
As mentioned above, preventing that reflux gas is back under the situation of outlet pipe, then can improve engine performance, improve the mileage oil consumption thus and reduce smoke evacuation, thereby improve heat energy efficiency to greatest extent, and, can easily install by being fixed in the outlet pipe end by force, for the user offers convenience.
Background technique
Generally speaking, for internal-combustion engine, the waste gas of the pollutant that produces owing to burning in internal-combustion engine is with about 3～5kg/cm
2Relatively high pressure and about 600 ℃ relatively-high temperature state discharge, therefore catalysis device and baffler must be installed.
In internal-combustion engine, when waste gas is discharged,, hinder first exhaust resistance that waste gas is discharged from internal-combustion engine thereby form because of forming vacuum in the gas exhaust manifold.Subsequently, when this waste gas during by purifier its flow velocity obviously reduce, thereby form second exhaust resistance.
After this, when the waste gas that flows into baffler passes the dividing plate that forms stage by stage, will form the 3rd exhaust resistance.
So in the waste gas discharge process, baffler is usually designed to 15～20 times the volume that has greater than engine displacement, therefore produces exhaust resistance inevitably.Thus, the output of motor descends, and increases by about 5～10% fuel consumption and increase the amount of pollutant.
Therefore, it should be understood that and only to improve combustion efficiency, improve mileage oil consumption, output energy and heat energy with this by smooth combustion gas.For achieving the above object, various routine techniques schemes were once proposed.
Under the situation of boiler, if flue runs into against the wind, then, the outside air adverse current is penetrated into inside, firing chamber because of making wind, cause partial combustion, and the steam that is produced during the burning and the nitrogen-containing compound that swims will be adsorbed on the surface of heat exchanger.
Under the situation that above-mentioned phenomenon repeats, will reduce the performance of boiler hot exchanger, cause hot-swap feature to descend.Therefore also carried out much being intended to improve the research of the problems referred to above.
Simultaneously, as an illustrative examples of routine techniques scheme, the exhaust apparatus of vehicle of air flows is proposed to utilize for 2000-56951 number at the Korean Patent communique.This technological scheme is utilized air flows, it is designed to the streamline main body of venting gas appliance is incorporated into outlet pipe, thereby when vehicle driving, air velocity according to the streamline body surfaces of flowing through forms the area of low pressure around venting gas appliance, thereby make waste gas be sucked away by the influence of above-mentioned low pressure, thereby help the discharge of waste gas.
But the shortcoming of technique scheme is that the structure of streamline main body is relatively large and complicated, therefore is difficult for it is installed on the vehicle, is difficult to utilize in practice this technological scheme.
Simultaneously, another example as the routine techniques scheme, proposed to have vortex generator in the Korean Patent communique 1998-75223 number main muffler outlet pipe of (vortex generator), setting can produce blade by the eddy current of waste gas rotation in the middle of outlet pipe.This technological scheme is configured to utilize waste gas to make the blade rotation, thereby produces eddy current, promotes the discharge of waste gas thus.Yet the problem of existence is that blade becomes the root that produces some resistances that hinder exhaust-gas flow, and the very easily temperature distortion of its structure, therefore is difficult to utilize it in practice.
As another example of routine techniques scheme, the exhaust extractor of eddy current has been proposed to utilize in No. the 257874th, the Korean Patent communique, at the baffler front end that is arranged on the waste gas discharge path, setting can suck the pipeline of outside air separately.In addition, the blade (vane) that outside air can be sucked and produces eddy current is installed in above-mentioned pipeline.In addition, this device also has the air-lock (damper) of the outside air amount that is used to regulate suction, and the openness of itself and throttle valve is worked pro rata.
But, in this technological scheme,, the looped pipeline with the extraneous gas circulation is set, so exhaust noise reaches the outside by this looped pipeline because of getting rid of the baffler front end that the path provides eddy current and eliminates exhaust noise to waste gas, therefore produce very big noise.And, regulate air-lock because of being equipped with the outside air of the throttle valve of motor interlock, therefore a defective that exists is, it is complicated that the structure of equipment and structure become.
Another example as the routine techniques scheme, Korean Utility Model Application proposes to be used for the exhaust extractor of vehicle for 20-0010194 number, in device, form the air stream hand-hole, and form flat die roll and steel plate around the air stream hand-hole, during with convenient vehicle driving, utilize the air-flow that is produced to form eddy current.
But said apparatus is formed in the flared tube and forms eddy current by steel plate and flat die roll, so waste gas must pass through narrow relatively path.Therefore, the problem of this device is, structural instability produces exhaust resistance and reflux gas, and produces aerodynamic noise around in the baffler rear end.
Technique scheme is recognized the flow velocity that increases waste gas, improves the output of motor thus and reduces fuel consume.But their defective is, stops or during low speed driving, it has little effect, and when high vehicle speeds, produces aerodynamic noise in the baffler rear end at vehicle.
Summary of the invention
Therefore, the present invention is devoted to overcome the deficiency of prior art, and one object of the present invention is to provide a kind of device of eliminating exhaust pressure and preventing exhaust gas recirculation, comprise: fixed tube, be installed on outlet pipe rear end or boiler flue rear end, and have along a plurality of reflux gas guide holes of pre-position in the line of its side face from the internal-combustion engine extended spot; And second exhaust pipe, be centered around fixed tube and be provided with on every side, discharge the return flow line that direction is opened formation thereby between fixed tube and second exhaust pipe, limit to waste gas from above-mentioned reflux gas guide hole.
Therefore, the reflux gas (exhaust pulses) that refluxes in the waste gas that can discharge by fixed tube is directed to the return flow line that is formed between second exhaust pipe and the fixed tube, and the reflux gas that is guided moves to fixed tube inside by the reflux gas guide hole, be expelled to the outside with the waste gas of discharging subsequently, thereby prevent that reflux gas is back in the outlet pipe.
As mentioned above, preventing that reflux gas is back under the situation of outlet pipe, then can improve engine performance, improve the mileage oil consumption thus and reduce smoke evacuation, thereby improve heat energy efficiency to greatest extent, and, can easily install by being fixed in the outlet pipe rear end by force, for the user offers convenience.
To achieve these goals, the invention provides a kind of device of eliminating exhaust pressure and preventing exhaust gas recirculation, comprise: fixed tube, have and to be installed on from the outlet pipe end of internal-combustion engine extension or the structure of boiler flue end, and that the part that is not fixed to the outlet pipe end of fixed tube exceeds the outlet pipe rear end is outwards outstanding, fixed tube is a hollow, thereby its inside is communicated with outlet pipe, is forming a plurality of reflux gas guide holes along a line around its circumference with above-mentioned outlet pipe end position adjacent in fixed tube; And second exhaust pipe, be set to have shape around fixed tube, wherein, between said fixing pipe and above-mentioned second exhaust pipe, form the return flow line, so that flow in the return flow line by the part that refluxes in the waste gas of fixed tube discharge, and pass through the reflux gas guide hole, and above-mentioned reflux gas of guiding is expelled to the outside once more to fixed tube guided inside reflux gas.
Preferably, fixed tube and second exhaust pipe not with each fixing end of outlet pipe, towards longitudinal center's direction bending, and the section area in the space that curved end defines of second exhaust pipe, greater than the section area in the space that curved end defines of said fixing pipe.
This device can also be included in the inside flue that is not provided with the fixing end of outlet pipe of said fixing pipe, and this inside flue has honeycomb (honeycomb) structure.
In addition, this device also comprises gas guide blade unit (gas guide blade unit), is arranged at said fixing pipe inboard, so that reduce from the reflux gas of reflux gas guide hole and conflicting of waste gas, and improve the waste gas velocity of discharge, thereby combustion gas successfully rapidly.
In addition, above-mentioned gas guide blade unit comprises: a plurality of blades, be arranged on the internal surface of fixed tube, and each vane collocation in a plurality of blades is between adjacent reflow gas guide hole; And conical blade supportive body, be positioned at the central part that above-mentioned a plurality of blade engages the fixed tube at place.
In addition, each bending blade in above-mentioned a plurality of blades tilts at a predetermined angle so that discharge direction with respect to waste gas.
This device can also be included in the blade flue that is not provided with the fixing end of outlet pipe of said fixing pipe, and this blade flue has cellular structure.
In addition, this device also can comprise gas guide blade unit, the one end is inserted between said fixing pipe and the outlet pipe, gas guide blade unit has the longitudinal cross-section towards its longitudinal center's axis bending, thereby discharging direction by the section area in gas guide blade space that the unit defines along waste gas reduces, thereby improve exhaust-gas flow speed, second return flow line that formation is communicated with the reflux gas guide hole between gas guide blade unit and tachy steroling fixed tube inner peripheral surface surface, gas guide blade unit.
In addition, this device can be included in the waste gas of above-mentioned gas guide blade unit and discharge the inner blade flue that is provided with in direction rear end, and this blade flue has cellular structure.
In addition, this device also can comprise the 3rd outlet pipe, is provided with around above-mentioned second exhaust pipe, forms locking aperture in the 3rd outlet pipe one end adjacent with above-mentioned outlet pipe end, with the insertion lock(ing) bolt, thereby second exhaust pipe is fixed in outlet pipe more firmly by the 3rd outlet pipe.
Description of drawings
Fig. 1 shows according to elimination exhaust pressure of the present invention and prevents the view of the device of exhaust gas recirculation;
Fig. 2 is the part sectioned view along A-A ' line of Fig. 1;
Fig. 3 is according to the sectional side view that prevents exhaust gas recirculation device of the present invention;
Fig. 4 shows the view that prevents the exhaust-gas flow of exhaust gas recirculation device according to of the present invention;
Fig. 5 shows the view that prevents another embodiment of exhaust gas recirculation device according to of the present invention;
Fig. 6 is the view that prevents exhaust gas recirculation device that shows according to embodiment of the invention modification, and it is provided with inner flue;
Fig. 7 shows the view that prevents exhaust gas recirculation device according to another embodiment of the present invention, and it is provided with stator blade;
Fig. 8 is the view that shows according to another embodiment of the stator blade that prevents exhaust gas recirculation device of the present invention;
Fig. 9 is the view that shows the modification of Fig. 7, wherein also is provided with the blade flue;
Figure 10 is the view that shows according to the another embodiment of the stator blade that prevents exhaust gas recirculation device of the present invention;
Figure 11 is the view that shows the modification of Figure 10, wherein also is provided with the blade flue; And
Figure 12 is the view that prevents exhaust gas recirculation device that shows according to another embodiment of the present invention, and it is provided with the 3rd outlet pipe.
Embodiment
Below, be described with reference to the accompanying drawings the preferred embodiment of the present invention.
Although for exemplary purpose, the preferred embodiments of the present invention are disclosed, but these embodiments limit the scope of the invention, and those skilled in the art are understood that, under the condition that does not break away from the technology of the present invention scope and spirit, various modification, increase and replacement all are possible.
Fig. 1 shows according to elimination exhaust pressure of the present invention and prevents the view of the device of exhaust gas recirculation.Fig. 2 is the part sectioned view along A-A ' line of Fig. 1.Fig. 3 is according to the sectional side view that prevents exhaust gas recirculation device of the present invention.Fig. 4 shows the view that prevents the exhaust-gas flow of exhaust gas recirculation device according to of the present invention.Fig. 5 shows the view that prevents another embodiment of exhaust gas recirculation device according to of the present invention.Fig. 6 is the view that prevents exhaust gas recirculation device that shows according to embodiment of the invention modification, and it is provided with and comprises inner flue.Fig. 7 shows the view that prevents exhaust gas recirculation device according to another embodiment of the present invention, and it is provided with stator blade.Fig. 8 is the view that shows according to another embodiment of the stator blade that prevents exhaust gas recirculation device of the present invention.Fig. 9 is the view that shows the modification of Fig. 7, wherein also is provided with the blade flue.Figure 10 is the view that shows according to the another embodiment of the stator blade that prevents exhaust gas recirculation device of the present invention.Figure 11 is the view that shows the modification of Figure 10, wherein also is provided with the blade flue.Figure 12 is the view that prevents exhaust gas recirculation device that shows according to another embodiment of the present invention, and it is provided with the 3rd outlet pipe.
As shown in the figure, according to elimination exhaust pressure of the present invention and prevent the device 10 of exhaust gas recirculation, comprise fixed tube 100 and second exhaust pipe 110, be concentric circles and have different-diameter.
Fixed tube 100 is incorporated on boiler or extended outlet pipe 1 back end outer surface of internal-combustion engine.And, around the outer circumferential face of fixed tube 100, forming a plurality of reflux gas guide holes 102 with outlet pipe 1 rear end adjacent position.
Be with second exhaust pipe 110 in fixed tube 100 outsides, it forms the shape around fixed tube 100.Therefore, second exhaust pipe 110 forms the open return flow line 120 of an end around fixed tube 100 and between second exhaust pipe 110 and fixed tube 100.
In other words, fixed tube 100 and second exhaust pipe 110 are connected with each other at their front end, and form return flow line 120 between them, and this return flow line is opened from the intermediate portion extension of fixed tube 100 and second exhaust pipe 110 and towards their rear end.In other words, between fixed tube 100 and second exhaust pipe 110, form return flow line 120, open so that it discharges direction from reflux gas guide hole 102 to waste gas.
Usually, under the situation of boiler or internal-combustion engine,, wherein make the part exhaust gas recirculation to outlet pipe 1 in the generation gas backstreaming of outlet pipe 1 rear end because backflow phenomenon takes place their structural characteristics.Yet in the present invention, because said structure, reflux gas enters return flow line 120, rather than enters outlet pipe 1.
In other words,, will make the reflux gas that influenced by back pressure suck return flow line 120, prevent that the reflux gas backflow from flowing into fixed tube 100 when the waste gas of discharging from outlet pipe 1 passes the fixed tube 100 that is communicated with outlet pipe 1.
In addition, be inhaled into the reflux gas of return flow line 120, then move in the fixed tube 100 by the reflux gas guide hole 102 that is formed in the fixed tube 100, these reflux gas are expelled to outside the fixed tube 100 with the waste gas of discharging subsequently.
At this moment, fixed tube 100 has such funnel shaped: the rear end of its longitudinal cross-section from the front end of the fixed tube 100 that combines with outlet pipe 1 rear end to this fixed tube 100, tilt towards longitudinal center's axis direction, therefore can improve the waste gas velocity of discharge.And, because this shape of fixed tube 100 by changing the distance that staggers of fixed tube 100 and second exhaust pipe 110, makes the section area difference at 120 two ends, return flow line.
As mentioned above, because the section area of return flow line 120, increase to its rear end with front end that reflux gas guide hole 102 is communicated with from it, improve the reflux gas speed of the end that flows into return flow line 120, thereby promote the guiding reflux gas to flow into the return flow line, and make it suck fixed tube by reflux gas guide hole 102 easily.
As shown in Figure 5, fixed tube 100 and second exhaust pipe 110 are configured and make its loose end (rear end) to the central axial direction bending.In this case, around the crooked end of fixed tube 100 and second exhaust pipe 110, further improve the velocity of discharge of waste gas, make the discharge of waste gas become easy.
In other words, and the end that waste gas discharged opposite with outlet pipe 1 rear end of fixed tube 100 and second exhaust pipe 110 curves inwardly, so that the exhaust velocity of fixed tube 100 front ends that is anchored on outlet pipe 1 becomes easy greater than the exhaust velocity of its rear end thereby waste gas is discharged.
In addition, under the situation of its longitudinal center's axis direction bending, can more effectively prevent that the rear end that reflux gas passes through fixed tube 100 from refluxing in the rear end of fixed tube 100.
At this moment, therefore the space section area that is defined by the rear end of second exhaust pipe 110 forms return flow line 120 inlets greater than the space section area that is defined by the rear end of fixed tube 100.And return flow line 120 is used from the amount that reduces reflux gas with the second exhaust pipe 110 1 with curved end.
In addition, be provided with inner flue 130 in the rear end of fixed tube 100.Inner flue 130 has honeycomb (honeycomb) structure, thereby prevents the waste gas of the not expecting diffusion that fixed tube 100 back edges are taken place, so as can rapider combustion gas successfully to outside.
,, make by outlet pipe 1 combustion gas and become more smooth and easy to shown in Figure 9 as Fig. 7 by gas guide blade unit 140 is set in fixed tube 100.In addition, by the smooth discharge of waste gas, effectively discharge the reflux gas that flows into by reflux gas guide hole 102.
Gas guide blade unit 140 comprises blade supportive body and a plurality of blade.Blade is arranged at the inboard of fixed tube 100, and each vane collocation is between contiguous reflux gas guide hole 102.The blade supportive body is cone shape and is arranged at the central part of the contacted fixed tube of a plurality of blades.
In an embodiment of the present invention, although the blade supportive body is shown as cone shape, the blade supportive body also can adopt other shapes, as long as guarantee to pass fixed tube 100 combustion gas rapidly and successfully.
In addition, as shown in Figure 8, gas guide blade unit 140 ' is as another embodiment of gas guide blade unit, and it has such structure: make each blade be as the criterion to tilt to a certain degree and be bent to form with rapid combustion gas with relative discharge direction.In this case, combustion gas more apace, thus can discharge reflux gas more effectively by reflux gas guide hole 102.
In addition, can be provided with the blade flue 150 of cellular structure in fixed tube 100 loose ends (rear end), thus can easier combustion gas.Thereby, can effectively discharge the reflux gas that flows into fixed tube 100 by reflux gas guide hole 102 by smooth combustion gas.
In addition,, gas guide blade unit 140 is set in fixed tube 100 " and is inserted between outlet pipe 1 and the fixed tube 100 to shown in Figure 11 as Figure 10.
" have such shape, its longitudinal cross-section is towards its longitudinal center's axis direction bending, thereby past more its space section area that defines of waste gas discharge direction becomes more little to its rear end from its front end in gas guide blade unit 140.Thereby in fixed tube 100 and gas guide blade unit 140 " between form second return flow line 160 ".
Similarly, in gas guide blade unit 140 " the rear end under the situation that its longitudinal center's axis direction tilts, then make the waste gas discharge become easy because of the velocity of discharge of the waste gas by outlet pipe 1 increases.
Second return flow line 160 " effect be the reflux gas that prevents to flow into return flow line 120, after by reflux gas guide hole 102, be back to outlet pipe 1 inside, thereby make the reflux gas can be more reliably and be expelled to the outside effectively.
In addition, preferably, in gas guide blade unit 140 " rear end be provided with the blade flue 150 of cellular structure ", thus combustion gas more effectively, and, can effectively discharge the reflux gas that flows into by reflux gas guide hole 102 by smooth combustion gas.
In addition, the present invention can have such structure: be provided with the 3rd outlet pipe 170 around second exhaust pipe 110.In this case, the two end part of the 3rd outlet pipe 170 are arranged at the outside, two end part of second exhaust pipe 110, thereby the 3rd outlet pipe 170 covers second exhaust pipe 110 fully.
In addition, the end at three outlet pipe 170 adjacent with outlet pipe 1 forms locking aperture, to insert lock(ing) bolt B.Lock(ing) bolt B rotatably inserts in the locking aperture 172, thereby exerts pressure to the outer surface part of outlet pipe 1.
Like this, the 3rd outlet pipe 170 and second exhaust pipe 110 fix, and lock(ing) bolt B exerts pressure round about in the outer surface part of outlet pipe 1.Thereby, the 3rd outlet pipe 170 is firmly secured to outlet pipe 1.
In addition; in this embodiment, because of the 3rd outlet pipe 170 with shape setting around fixed tube 100 and second exhaust pipe 110, thereby by the 3rd outlet pipe 170 protection fixed tube 100 and second exhaust pipes 110; and the beautiful shape of holding device satisfies consumer demand.
Industrial applicibility
As mentioned above, the invention provides the dress of eliminating pressure at expulsion and preventing exhaust gas recirculation Put, this device is configured to the backflow in the waste gas partly to be directed to and is formed at second exhaust In the return flow line of defining between pipe and the stationary pipes, and the reflux gas that is guided is by refluxing The gas guide hole sucks stationary pipes inside, and outside the waste gas of discharging subsequently is expelled to Section, thus prevent that reflux gas is back in the blast pipe.
Eliminating in the situation of pressure at expulsion by preventing that reflux gas from flowing into, then can improve Engine performance improves thus the mileage oil consumption and reduces smoke evacuation, thereby improves to greatest extent Heat energy efficiency. And only by being fixed in by force on the blast pipe, device of the present invention can Easily install, for the user offers convenience. So, described the present invention is effective and practical.
Claims (10)
1. device of eliminating exhaust pressure and preventing exhaust gas recirculation comprises:
Fixed tube, have and be installed on from outlet pipe end that internal-combustion engine extends or the structure of the flue end of boiler, it is outwards outstanding that thereby the part except the part that is fixed to the outlet pipe end of described fixed tube exceeds the outlet pipe end, described fixed tube is a hollow, thereby its inside is communicated with outlet pipe, is in the fixed tube in the position with described outlet pipe end vicinity and is formed with a plurality of reflux gas guide holes along a line around its circumference; And
Second exhaust pipe is set to have the shape around fixed tube, wherein,
Between described fixed tube and described second exhaust pipe, be limited with the return flow line, so that the backflow from the waste gas that fixed tube is discharged partly flows in the described return flow line, and be directed in the fixed tube, and the reflux gas that is guided is expelled to the outside once more by the reflux gas guide hole.
2. elimination exhaust pressure according to claim 1 and prevent the device of exhaust gas recirculation, wherein, described fixed tube and second exhaust pipe not with fixing each end of outlet pipe towards longitudinal center's axis direction bending, and the section area in the space that curved end defined of second exhaust pipe is greater than the section area in the space that curved end defined of described fixed tube.
3. elimination exhaust pressure according to claim 1 and 2 and prevent the device of exhaust gas recirculation also comprises:
Fixed tube be not provided with inner flue with the fixing end of outlet pipe, described inner flue has cellular structure.
4. elimination exhaust pressure according to claim 1 and 2 and prevent the device of exhaust gas recirculation also comprises:
Gas guide blade unit is arranged in the described fixed tube, so that reduce conflicting between the reflux gas of discharging from the reflux gas guide hole and the waste gas, and improves the velocity of discharge of waste gas, thus combustion gas successfully rapidly.
5. elimination exhaust pressure according to claim 4 and prevent the device of exhaust gas recirculation, wherein, described gas guide blade unit comprises:
A plurality of blades are arranged on the internal surface of described fixed tube, and each in described a plurality of blades is arranged between the adjacent reflux gas guide hole; And
Conical blade supportive body is positioned at the central part that above-mentioned a plurality of blade engages the described fixed tube at place.
6. elimination exhaust pressure according to claim 5 and prevent the device of exhaust gas recirculation, wherein, each in described a plurality of blades is all crooked, tilts at a predetermined angle so that discharge direction with respect to waste gas.
7. elimination exhaust pressure according to claim 4 and prevent the device of exhaust gas recirculation also comprises:
At the blade flue that is not provided with the fixing end of outlet pipe of described fixed tube, described blade flue has cellular structure.
8. elimination exhaust pressure according to claim 4 and prevent the device of exhaust gas recirculation also comprises:
Gas guide blade unit, the one end is between described fixed tube and outlet pipe, described gas guide blade unit has the longitudinal cross-section towards its longitudinal center's axis bending, thereby the section area in the space of being defined by gas guide blade unit is discharged direction along waste gas and is reduced, thereby improve the flowing velocity of waste gas, gas guide blade unit is limited with second return flow line that is communicated with the reflux gas guide hole between the inner peripheral surface surface of gas guide blade unit and described fixed tube.
9. elimination exhaust pressure according to claim 8 and prevent the device of exhaust gas recirculation also comprises:
Discharge the blade flue that direction is provided with respect to waste gas in the rear end of described gas guide blade unit, described blade flue has cellular structure.
10. elimination exhaust pressure according to claim 1 and prevent the device of exhaust gas recirculation also comprises:
The 3rd outlet pipe, around described second exhaust pipe, be provided with, in an end of described three outlet pipe adjacent, be formed with locking aperture,, thereby second exhaust pipe be firmly fixed at outlet pipe by the 3rd outlet pipe with the insertion lock(ing) bolt with described outlet pipe end.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070059152A KR100769700B1 (en) | 2007-06-15 | 2007-06-15 | Apparatus for preventing flowing backward of exhaust gas |
| KR1020070059152 | 2007-06-15 | ||
| KR10-2007-0059152 | 2007-06-15 | ||
| KR1020070100532A KR100929692B1 (en) | 2007-10-05 | 2007-10-05 | Exhaust gas backflow prevention device of internal combustion engine and boiler |
| KR1020070100532 | 2007-10-05 | ||
| KR10-2007-0100532 | 2007-10-05 | ||
| PCT/KR2007/004977 WO2008153247A1 (en) | 2007-06-15 | 2007-10-11 | Apparatus for removing exhaust gas pressure and preventing backflow of exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101688461A true CN101688461A (en) | 2010-03-31 |
| CN101688461B CN101688461B (en) | 2013-06-26 |
Family
ID=40129840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780053363.XA Expired - Fee Related CN101688461B (en) | 2007-06-15 | 2007-10-11 | Apparatus for removing exhaust gas pressure and preventing backflow of exhaust gas |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US20100307145A1 (en) |
| EP (1) | EP2162603A4 (en) |
| JP (1) | JP4988922B2 (en) |
| CN (1) | CN101688461B (en) |
| AU (1) | AU2007354986A1 (en) |
| WO (1) | WO2008153247A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763508A (en) * | 2015-04-03 | 2015-07-08 | 中国能源建设集团山西省电力勘测设计院有限公司 | Device for preventing condensate water from refluxing for gas exhausting vertical tube of internal combustion engine |
| CN106661994A (en) * | 2014-08-21 | 2017-05-10 | 威廉国际有限责任公司 | Valvular-conduit manifold |
| CN110220765A (en) * | 2018-07-24 | 2019-09-10 | 江苏苏净集团有限公司 | A kind of aerosol dilution device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106661994A (en) * | 2014-08-21 | 2017-05-10 | 威廉国际有限责任公司 | Valvular-conduit manifold |
| US10221747B2 (en) | 2014-08-21 | 2019-03-05 | Williams International Co., L.L.C. | Valvular-conduit manifold |
| CN106661994B (en) * | 2014-08-21 | 2019-07-05 | 威廉国际有限责任公司 | Valve guide manifold, valve guide manifold element, the method and fluid diode box element for running manifold |
| US10612447B2 (en) | 2014-08-21 | 2020-04-07 | Williams International Co., L.L.C. | Valvular-conduit exhaust manifold |
| CN104763508A (en) * | 2015-04-03 | 2015-07-08 | 中国能源建设集团山西省电力勘测设计院有限公司 | Device for preventing condensate water from refluxing for gas exhausting vertical tube of internal combustion engine |
| CN110220765A (en) * | 2018-07-24 | 2019-09-10 | 江苏苏净集团有限公司 | A kind of aerosol dilution device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100307145A1 (en) | 2010-12-09 |
| US20130239557A1 (en) | 2013-09-19 |
| EP2162603A4 (en) | 2012-03-07 |
| WO2008153247A1 (en) | 2008-12-18 |
| JP2010530040A (en) | 2010-09-02 |
| JP4988922B2 (en) | 2012-08-01 |
| EP2162603A1 (en) | 2010-03-17 |
| AU2007354986A1 (en) | 2008-12-18 |
| CN101688461B (en) | 2013-06-26 |
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