CN205370751U - Air booster - Google Patents

Abstract

The utility model discloses an air booster, be in the outer tube around and central authorities form respectively that circuitous all side flows are said and the straight line draw the runner, to should the drag flow saying the position of front end, form convergent portion and output tube at the outer tube, form in convergent portion with the communicating air chamber of two aforementioned runners, the utility model discloses that for example air inlet and the output tube of engine link to each other with burner during the use, see through the negative pressure that the burner function produced, by drawing the runner, the air of week side flow way suction environment, when drawing the runner towards the very fast air of output tube flow velocity, say by all side flows that more slow air of input air chamber can be pull forward and form the vortex, speed and pressure during the gaseous entering burner of reinforcing, make the fuel complete combustion in the burner, reinforcing burner's combustion efficiency is with reducing fuel consumption and promote output, reducing pollutants avoids the emission of the black cigarette of incomplete combustion simultaneously.

Description

Air booster

Technical field

This utility model relates to a kind of device promoting burner operational effectiveness, particularly relates to a kind of air booster that can promote burner intake efficiency and then promote its burning and operational paradigm.

Background technology

General automobile, locomotive, boats and ships or hay mover are to use internal combustion engine such as reciprocating engine as the source of power, the mode of this kind of engine running, it is after mixing air and fuel, carry out four programs such as air inlet, compression, blast, aerofluxus, and then produce the output of power in the cylinder of engine.

Above-mentioned existing engine running time, in engine cylinder blast fuel and AIR Proportional, namely oil-gas ratio be affect engine running important parameter, good oil-gas ratio is conducive to fuel oil to burn completely, can strengthen engine export horsepower, reduce the discharge of waste gas simultaneously.

But air is entered in the process of combusted cylinder by the air inlet of engine, can hinder layer by layer through air inlet pipeline, air throttle, inlet manifold, combustor porthole etc., if and the aging air of also cutting down further of obstruction structure in these engine air admittance processes enters the amount of cylinder, thus, the fuel oil incomplete combustion in engine can be made, increase oil consumption and cause the horsepower of engine to reduce, and incomplete combustion also increases the air pollutants of engine exhaust and makes igniter produce carbon distribution generation vicious cycle.

In order to make up this shortcoming, making the efficiency of combustion of burner such as engine promote to reply original power, prior art has the supercharger using actively air inlet, for instance engine is forced air inlet by turbocharger, solves the incomplete problem of aforesaid engine combustion.Though the supercharger utilizing actively air inlet can be substantially improved the horsepower of engine output, but gear train and exhaust driven gas turbine etc. are relatively bulky with power consumption, thing followed pol loss also can substantially increase, therefore the fuel oil burning demand more completely that user has only to make in engine is not met, in addition, the device of this active air inlet of turbocharger needs engine is carried out the repacking of complexity in use, the hierarchy of skill used is higher, user cannot be bought back installation voluntarily by shop, utilization is not easy use.

Utility model content

Lack, owing to existing burner such as engine has, the pressurization means easily installing and being applicable to engine natural inflow, thus have the shortcoming that cannot promote engine operational paradigm.For this, this utility model forms eddy current in the way of central authorities have the different air-flow of speed from surrounding runner, with use nozzle configuration to obtain accelerating jet flow, make the air reinforcement that device exports, it is internally formed low-pressure area in air inlet, and then the intake efficiency of enhancement air inlet, reach to promote effect of engine input air pressure.

For reaching above-mentioned purpose, this utility model provides a kind of air booster, including:

One shell, is provided with an outer tube, forms the convergent portion that a width phases down forward in the front end of this outer tube, at intermediate formation one outlet tube of this front end, convergent portion；And

Multiple front and back are stacked and are embedded the combination order in this outer tube, the central authorities of each combination order are provided with a trachea, the cover plate of an annular is connected around each trachea, homonymy at each cover plate wears more than one pore, periphery at each cover plate connects a side ring, and each side ring is resisted against the inner peripheral surface of this outer tube, and the combination order of front side is positioned at the front end of this outer tube, the combination order of front side and this convergent portion are around forming an air chamber, and the trachea front end of the combination order of front side is stretched in this air chamber；

The diameter of the trachea of the combination order of front side is less than the diameter of this outlet tube, and the front central authorities rectified this outlet tube of this trachea, the trachea tandem of multiple combination orders forms a traction runner, the pore of combination order adjacent before and after two is reverse setting, make the pore of multiple combination order by rear to the front form staggered for repetitiousness, forming one week side runner between the pore of multiple combination orders, the length of side runner extension in this week is longer than the length of this traction runner.

Further, it is middle around that the cover plate of each combination order described in the utility model is attached to each trachea, described each side ring is to be extended back by the periphery of each cover plate, before each cover plate, periphery is provided with more than one locating piece, the quantity of those locating pieces relative and position, the recessed more than one detent of root edge at each side ring, combination order adjacent before and after two is wherein positioned at the detent of the combination order of the locating piece embedding front side of the combination order of rear side.

Further, the multiple combination order of this utility model is divided into multiple first combination orders of two groups, front and back and more than one second combination order, wherein each first combination order two places of fourth class office wherein homonymy around its cover plate wear two pores, and each second combination order wears three pores in wherein three places of fourth class office around its cover plate.

Further, this utility model wears several button hole around described outer tube back-end, in the end overlap a capping dish after the second combination order of side, the central authorities of this capping dish are provided with a trachea, the cover plate of an annular is connected around in the middle of this trachea, more than one pore is worn at this cover plate, periphery after this cover plate connects a side ring extended back, this side ring is resisted against the inner peripheral surface of this outer tube, it is provided around several cam at this side ring, each cam is buckled in each button hole location, and the trachea of this capping dish is connected with the trachea of the second combination order of rear side.

It is also preferred that the left convergent portion described in the utility model is hemispheric housing and inner face is arcwall face.

It is also preferred that the left convergent portion described in the utility model be cone housing and inner face be taper seat.

nullWhen this utility model uses，It is connect the air inlet to burner such as engine with outlet tube，When burner operates，The internal negative pressure produced with air inlet place of burner can attract air-flow by outlet tube，At this moment the air in environment can be flowed in shell by traction runner and week side runner attraction respectively，When air flows into week side runner，Owing to the path length of runner is relatively drawn in the path of all side runners，Therefore the speed of the air-flow that traction runner inputs around air chamber，Can relatively draw runner slow to the speed of the air-flow of air chamber intermediate input，The traction air-flow faster that sprays forward of runner making central authorities can draw around air chamber air-flow more slowly，The eddy current of pressurization is formed in air chamber，And the air-flow that air chamber can be imported outlet tube by the profile of convergent portion nozzle gradually accelerates，Make in air chamber the air of flow forward other than with beyond convergent portion accelerates，Eddy current can also be utilized to pressurize，Strengthen pressure and the speed of outlet tube delivery air，Air inlet at burner is internally formed low-pressure area，And then promote the intake efficiency of air inlet.

Compared with prior art, the beneficial effects of the utility model are in that: utility model is by the mode of output forced air, the fuel oil in connection burner of the present utility model such as engine is made fully to burn, by natural inflow, without additionaling power in the way of strengthen the horsepower of engine, reduce engine carbon deposit and the generation of discharge air pollutants, in addition, this utility model is installed easily, as long as the outlet tube of case nose being connect the air inlet to burner during use, allow and make employment can install and use voluntarily after buying, facilitate user to utilize.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of this utility model the first preferred embodiment air booster；

Fig. 2 is the exploded view of this utility model the first preferred embodiment air booster；

Fig. 3 is the axonometric chart of this utility model the first preferred embodiment air booster the first combination order；

Fig. 4 is the axonometric chart of this utility model the first preferred embodiment air booster the second combination order；

Fig. 5 is the axonometric chart of this utility model the first preferred embodiment air booster capping dish；

Fig. 6 is the axonometric chart of this utility model the first preferred embodiment air booster cut-away section；

Fig. 7 is the axonometric chart of this utility model the first preferred embodiment air booster cut-away section；

Fig. 8 is the axonometric chart of this utility model the first preferred embodiment air booster cut-away section；

Fig. 9 is the enforcement schematic diagram of this utility model the first preferred embodiment air booster；

Figure 10 is another enforcement schematic diagram of this utility model the first preferred embodiment air booster；

Figure 11 be this utility model the first preferred embodiment air booster further implement schematic diagram；

Figure 12 is the partial magnified sectional view of this utility model the second preferred embodiment air booster.

Symbol description:

10 shell 11 outer tubes

111 button hole 12 convergent portions

13 outlet tube 20 first combination order groups

21 first combination order 211 tracheas

2111 jack portion 212 cover plates

2121 locating piece 213 side rings

2131 detent 214 pores

22 second combination order group 23 second combination orders

231 trachea 2311 jack portions

232 cover plate 2321 locating pieces

233 side ring 2331 detents

234 pore 24 capping dishes

241 trachea 2411 jack portions

242 cover plate 2421 locating pieces

243 side ring 2431 cam

244 pore A air chambers

B draws runner C week side runner

30 engine 301 air inlets

31 air inlet pipe 32 engines

321 air inlet 33 air inlet pipe

30A engine 301A air inlet

31A air inlet pipe 12A convergent portion

Detailed description of the invention

For technical characteristic of the present utility model and practical effect can be understood in detail, and can implement according to the content of description, further with preferred embodiment as indicated in the drawings, describe in detail as follows.

This utility model the first preferred embodiment as shown in Figures 1 to 5, one first combination order group 20,1 second combination order group 22 and the capping dish 24 that its structure includes a shell 10, is embedded in this shell 10 and is sequentially stacked, wherein:

This shell 10 is provided with an outer tube 11, this outer tube 11 is vertical circular body and rightabout two ends are divided into front end and rear end, around this outer tube 11 rear end with surround and equally spaced form be provided with four button holes 111, the convergent portion 12 that a width phases down forward is extended to form forward in the front end of this outer tube 11, this convergent portion 12 be cone housing and inner face be taper seat, at the outlet tube 13 that the intermediate formation one of front end, convergent portion 12 extends forward, this outlet tube 13 is the diameter circular body less than this outer tube 11, and the axle center of the axle center in this convergent portion 12 and this outer tube 11 is even in line.

nullSuch as Fig. 2、Shown in Fig. 7，This first combination order group 20 is embedded the front side in this outer tube 11，This first combination order group 20 is provided with the first combination order 21 that nine front and back are stacked，Please refer to Fig. 3，The central authorities of each first combination order 21 are provided with a vertical trachea 211，Each trachea 211 is straight tube body，The jack portion 2111 that a width phases down forward is formed in the front side of each trachea 211，The cover plate 212 of an annular is connected around in the middle of each trachea 211，Periphery before cover plate 212 with surround and equally spaced form be provided with the locating piece 2121 that four difference are protruded forward，Periphery after each cover plate 212 connects a side ring 213 extended back，Each side ring 213 is the torus being vertically arranged，Root edge four detents 2131 recessed relative to the position of four locating pieces 2121 at each side ring 213，Around each cover plate 212, wherein two places of fourth class office wear two pores 214，Each pore 214 is that the arc being the center of circle with the central authorities of trachea 211 is bored a hole，And two pore 214 be arranged in the same side around each cover plate 212；

As shown in Figure 6, Figure 7, the side ring 213 of each first combination order 21 is the inner peripheral surface being resisted against this outer tube 11, and the first combination order 21 of front side is positioned at the front end of this outer tube 11, this the first combination order 21 of front side surround an air chamber A in the inner side in this convergent portion 12 with the convergent portion 12 of this shell 10, trachea 211 front end of this first combination order 21 of front side is stretched in air chamber A, the diameter of this trachea 211 front end is less than the diameter of this outlet tube 13, and the front central authorities rectified this outlet tube 13 of this trachea 211；

When each first combination order 21 is stacked, the first combination order 21 adjacent before and after two is wherein positioned at trachea 211 rear end that the trachea 211 of the first combination order 21 of rear side inserts the first combination order 21 of front side with jack portion 2111, please refer to Fig. 2, the periphery of the cover plate 212 of the first combination order 21 of rear side is resisted against the trailing edge of the side ring 213 of the first combination order 21 of front side, and four locating pieces 2121 of the first combination order 21 of rear side embed four detent 2131 inner position of the first combination order 21 of front side；The pore 214 of the first combination order 21 adjacent before and after two is reverse setting, as shown in Figure 6 so that two pores 214 of each the first combination order 21 are arranged form by rear to front for what repetitiousness interlocked.

nullAs shown in Fig. 2 and Fig. 8，This second combination order group 22 is continue the rear end of this first combination order group 20 and is embedded in this outer tube 11，This second combination order group 22 is provided with the second combination order 23 that four front and back are stacked，Please refer to Fig. 4，The central authorities of each second combination order 23 are provided with a vertical trachea 231，Each trachea 231 is straight tube body，The jack portion 2311 that a width phases down forward is formed in the front side of each trachea 231，The cover plate 232 of an annular is connected around in the middle of each trachea 231，Periphery before cover plate 232 with surround and equally spaced form be provided with the locating piece 2321 that four difference are protruded forward，Periphery after each cover plate 232 connects a side ring 233 extended back，Each side ring 233 is the torus being vertically arranged，Root edge four detents 2331 recessed relative to the position of four locating pieces 2321 at each side ring 233，Around each cover plate 232, wherein three places of fourth class office wear three pores 234，Each pore 234 is that the arc being the center of circle with the central authorities of trachea 231 is bored a hole；

As shown in Fig. 2, Fig. 7, the side ring 233 of each second combination order 23 is the inner peripheral surface being resisted against this outer tube 11, and the jack portion 2311 of the trachea 231 of the second combination order 23 of front side inserts trachea 211 rear end of the first combination order 21 of rear side, the periphery of the cover plate 232 of the second combination order 23 of front side is resisted against side ring 213 trailing edge of the first combination order 21 of rear side, and four locating pieces 2321 of the second combination order 23 of front side embed detent 2131 inner position of the first combination order 21 of rear side；

When each second combination order 23 is stacked, the second combination order 23 adjacent before and after two is wherein positioned at trachea 231 rear end that the trachea 231 of the second combination order 23 of rear side inserts the second combination order 23 of front side with jack portion 2311, refer to Fig. 2, the periphery of the cover plate 232 of the second combination order 23 of rear side is resisted against the trailing edge of the side ring 233 of the second combination order 23 of front side and four detent 2331 inner position of the second combination order 23 of four locating pieces 2321 embedding front sides of the second combination order 23 of rear side；The pore 234 of the second combination order 23 adjacent before and after two is reverse setting, make three pores 234 of each second combination order 23 by rear to front for repetitiousness staggered form is set, the pore 234 of the second combination order 232 of the second combination order 23 of front side and the pore 214 of the first combination order 21 of rear side are also reverse settings.

nullSuch as Fig. 2、Shown in Fig. 8，This capping dish 24 continues the second combination order 23 of rear side and is embedded in the rear end of this outer tube 11，Please refer to Fig. 5，The central authorities of this capping dish 24 are provided with a vertical trachea 241，Each trachea 241 is straight tube body，The jack portion 2411 that a width phases down forward is formed in the front side of each trachea 241，The cover plate 242 of an annular is connected in the middle of around each trachea 241，Periphery before this cover plate 242 with surround and equally spaced form be provided with the locating piece 2421 that four difference are protruded forward，Periphery after this cover plate 242 connects a side ring 243 extended back，This side ring 243 is the torus being vertically arranged，Four cam 2431 of position projection of four button holes 111 at the side face correspondence outer tube 11 of this side ring 243，Around each cover plate 242, the position of the quartering wears four pores 244，Each pore 244 is that the arc being the center of circle with the central authorities of trachea 241 is bored a hole；

Such as Fig. 2, shown in Fig. 8, the side ring 243 of capping dish 24 is the inner peripheral surface being resisted against this outer tube 11, and trachea 231 rear end of the second combination order 23 of rear side is inserted with the jack portion 2411 of trachea 241, the periphery of the cover plate 242 of this capping dish 24 is resisted against side ring 233 trailing edge of the second combination order 23 of rear side, please refer to Fig. 2, four locating pieces 2421 of capping dish 24 embed four detent 2331 inner position of the second combination order 23 of rear side, four cam 2431 around this capping dish 24 are buckled in the button hole 111 of this outer tube 11 rear end and fix, make the first combination order group 20, second combination order group 22 is fixed in the outer tube 11 of this shell 10.

As shown in Figure 6, trachea 241 tandem of the trachea 211 of each first combination order 21 central authorities, the trachea 231 of each second combination order 23 central authorities and capping dish 24 central authorities traction runner B in line, air chamber A is stretched in the front end of this traction runner B；As shown in Figure 6 to 8, the pore 214 of each first combination order 21, each pore 234 of the second combination order 23 and the pore 244 of capping dish 24 are connected to form roundabout all side runner C between traction runner B and outer tube 11, and the length of this week side runner C is longer than the length of this traction runner B.

In aforementioned first preferred embodiment of the present utility model, except the quantity of the first combination order 21 of the first combination order group 20 is set to except nine, the quantity of the first combination order 21 also can be set to multiple quantity such as three, five or ten, and the pore 214 of each first combination order 21 is except being provided with two, also can be provided only with a pore 214, and the shape size of pore 214 is not limited to the enforcement aspect in aforementioned first preferred embodiment；In addition, the quantity of the second combination order 23 of the second combination order group 22 is except being provided with four, also the quantity of the second combination order 23 can be set to one, two or three etc. quantity, same, the quantity of the pore 234 of each second combination order 23 is also not limited to three, it is alternatively other quantity, and the shape size of pore 234 is also not necessarily limited to the enforcement aspect in aforementioned first preferred embodiment.

Furthermore, the shape of this shell 10 is not limited to pipe, also the shape of other such as square tubes can be set to, now the shape around first combination order group the 20, second combination order group 22 and capping dish 24 is designed as square also with the profile of square tube, those structures being embedded in the outer tube 11 of this shell 10 fixing, at this moment described traction runner B still can form the central authorities at outer tube 11 along the longitudinal direction.This utility model the first preferred embodiment is except being embedded except fixing the position of the first combination order group 20 and the second combination order group 22 in the way of outer tube 11 rear end by capping dish 24, also this capping dish 24 can be not provided with, directly with means such as bonding, welding, combining closely in the outer tube 11 of this shell 10 by the first combination order group 20 and the second combination order group 22, the means that the first combination order group 20 and the second combination order group 22 are fixed in outer tube 11 are not limited to the enforcement aspect that aforementioned first preferred embodiment provides.

This utility model is mounted in the air inlet of engine when using, as shown in Figure 9, it is single use an occupation mode of the present utility model, this engine 30 is provided with an air inlet 301, an air inlet pipe 31 is connected at air inlet 301, the outlet tube 13 that the outer end of this air inlet pipe 31 is linked in this utility model shell 10 can complete to install, and it is easy completely to install.Again as shown in Figure 10, it is use multiple occupation modes of the present utility model, when this utility model is used in the engine 32 with multiple air inlet 321, such as, during the engine of boats and ships, multiple air inlets 321 can connect multiple outlet tube of the present utility model 13 through multiple air inlet pipe 33 respectively, makes each air inlet 321 of engine 32 that this utility model can be utilized to promote the pressure of input air and benefit.

When aforesaid engine 30,32 operates, its inside and air inlet 301,321 place can produce negative pressure and captivation because of the running of engine 30,32, make this utility model being connected to air inlet pipe 31,33 can be attracted air by rear end, refer to this utility model the first preferred embodiment shown in Fig. 6 to Fig. 8, the air in environment can be drawn into the inside of shell 10 by the rear end of the rear end in week side runner C and traction runner B.

Flow into the air of roundabout all side runner C due to path longer, and the pore 244 that passes through of stream is become three pores 234 from four pores 244 and becomes two pores 214 again, therefore the speed flowed is slowed down by the length in path and the obstruction blocked, the air-flow of last reducing speed is by the surrounding inflow air chamber A on rear side of air chamber A, the inner peripheral surface tilted along convergent portion 12 ramps up forward, and flows out to the direction of this outlet tube 13 with the move mode of spiral；Flow into the air of traction runner B of straight line due to shortest path, therefore can extremely draw the front end of runner B with the fastest speed flow forward, to the middle ejection within outlet tube 13.

Speed due to the air of traction runner B front end ejection, faster than the air velocity starting flow forward acceleration around air chamber A gradually, by speed difference between the two, the air-flow traction air-flow that around spiral moves of injection before making mediad, the air-flow that directly advances in central authorities and around air-flow between form eddy current, the air of flow forward in air chamber A is made to reach beyond the effect of acceleration other than with the convergent portion that front side width phases down, can also further with the eddy current between air-flow, strengthen pressure and the speed of outlet tube 13 delivery air, make connection engine 30 of the present utility model, fuel oil in 32 can fully burn because of the supercharging of air inlet, strengthen engine 30, the horsepower of 32 and the generation of minimizing air pollutants.

When this utility model uses, the air inlet pipe 31,33 shown in earlier figures 9, Figure 10 is except except being connected with air inlet 301,321 in the way of being fully contemplated by, it is also possible to by air inlet pipe 31,33 to be inserted in the way of surrounding has gap in QI KOU 301,321.Please refer to Figure 11, this engine 30A is provided with an air inlet 301A, outlet tube 13 at this utility model shell 10 connects an air inlet pipe 31A, and this air inlet pipe 31A inserts in this air inlet 301A towards one end of this air inlet 301A, has gap between this air inlet pipe 31A and this air inlet 301A.

So, the air-flow accelerated via this utility model by air inlet pipe 31A to when flowing out in air inlet 301A, can the air of air inlet 301A outer periphery be pulled in air inlet 301A by the gap between air inlet pipe 31A and air inlet 301A in the air inlet 301A negative pressure being internally formed, increase the amount of air in input air inlet 301A further, more promote the efficiency of burner such as engine 30A internal combustion oil firing, strengthen the horsepower of engine 30A and reduce the generation of igniter carbon distribution and air pollutants.

This utility model the second preferred embodiment, is the shape changing the convergent portion 12 described in the first preferred embodiment.As shown in figure 12, in the second preferred embodiment of the present utility model, this convergent portion 12A is hemispheric housing and inner face is arcwall face, shape so design make by after flow forward over the air-flow of convergent portion 12A inner face and can pass through with slower speed, when drawing the runner B air-flow sprayed forward around air-flow traction air chamber A, the air-flow directly advanced in centre with around the boundary formation eddy current of air-flow.Due to the second preferred embodiment remaining structure and use mode all identical with described in the first preferred embodiment, therefore this utility model not in this to go forth.

These are only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.

Claims (6)

1. an air booster, it is characterised in that including:

One shell, is provided with an outer tube, forms the convergent portion that a width phases down forward in the front end of described outer tube, at intermediate formation one outlet tube of front end, described convergent portion；And

Multiple front and back are stacked and are embedded the combination order in described outer tube, the central authorities of each combination order are provided with a trachea, the cover plate of an annular is connected around each trachea, homonymy at each cover plate wears more than one pore, periphery at each cover plate connects a side ring, and each side ring is resisted against the inner peripheral surface of described outer tube, and the combination order of front side is positioned at the front end of described outer tube, the combination order of front side and described convergent portion are around forming an air chamber, and the trachea front end of the combination order of front side is stretched in described air chamber；

The diameter of the trachea of the combination order of front side is less than the diameter of described outlet tube, and the front central authorities rectified described outlet tube of described trachea, the trachea tandem of multiple combination orders forms a traction runner, the pore of combination order adjacent before and after two is reverse setting, make the pore of multiple combination order by rear to the front form staggered for repetitiousness, forming one week side runner between the pore of multiple combination orders, the length of described week side runner extension is longer than the length of described traction runner.

2. air booster as claimed in claim 1, it is characterized in that, wherein the cover plate of each described combination order is attached to each trachea centre around, each described side ring is to be extended back by the periphery of each cover plate, before each cover plate, periphery is provided with more than one locating piece, the quantity of relatively described locating piece and position, the recessed more than one detent of root edge at each side ring, combination order adjacent before and after two is wherein positioned at the detent of the combination order of the locating piece embedding front side of the combination order of rear side.

3. the air booster as according to any one of claim 1-2, it is characterized in that, plurality of combination order is divided into multiple first combination orders of two groups, front and back and more than one second combination order, wherein each first combination order two places of fourth class office wherein homonymy around its cover plate wear two pores, and each second combination order wears three pores in wherein three places of fourth class office around its cover plate.

4. air booster as claimed in claim 3, it is characterized in that, around described outer tube back-end, wherein wear several button hole, in the end overlap a capping dish after the second combination order of side, the central authorities of described capping dish are provided with a trachea, the cover plate of an annular is connected around in the middle of described trachea, more than one pore is worn at described cover plate, periphery after described cover plate connects a side ring extended back, described side ring is resisted against the inner peripheral surface of described outer tube, it is provided around several cam at described side ring, each cam is buckled in each button hole location, the trachea of described capping dish is connected with the trachea of the second combination order of rear side.

5. the air booster as according to any one of claim 1-2, it is characterised in that wherein said convergent portion is hemispheric housing and inner face is arcwall face.

6. the air booster as according to any one of claim 1-2, it is characterised in that wherein said convergent portion be cone housing and inner face be taper seat.