CN104595010B

CN104595010B - Booster with the reflux movement adjusted

Info

Publication number: CN104595010B
Application number: CN201410811266.4A
Authority: CN
Inventors: K·马哈拉特卡尔; M·G·斯瓦茨兰德尔; S·帕蒂尔; M·J·弗勒利希; G·库尔卡尼
Original assignee: Eaton Corp
Current assignee: Eaton Intelligent Power Ltd
Priority date: 2013-10-31
Filing date: 2014-10-31
Publication date: 2019-04-02
Anticipated expiration: 2034-10-31
Also published as: CN204646407U; WO2015066479A1; CN104595010A

Abstract

The present invention relates to a kind of boosters with the reflux adjusted movement, and the axial entrance, radially outlet formula booster include tubular shell, which includes the plane of inlet (IP) perpendicular to pelvic outlet plane (OP).Rotor mounting recess (1030,1020) is located parallel in the inner surface of entry wall (1063) of plane of inlet.Triangular-shaped outlet (104) is in pelvic outlet plane.Entrance (101) is in plane of inlet.At least two axis flow back to flow port (1222) in plane of inlet (IP).Alternatively, booster includes inlet axis (IA).Each rotor with blade includes the rotation axis parallel with inlet axis (IA), wherein when the rotor rotates, each blade is sequentially engaged along inlet axis (IA), wherein each blade is reversed along the length of their own rotor, and these blades are set the time to seal entrance fluidly relative to outlet.At least two return ports (122,1222) are in tubular shell.

Description

Booster with the reflux movement adjusted

Technical field

This invention relates generally to a kind of supercharger systems.More specifically, a kind of by returning cooling air from intercooler It flows to booster and obtains the supercharger systems of high-pressure ratio and low outlet temperature.

Background technique

Booster can be implemented as to combustion engine and supply compressed air.When air is compressed, it is then able to supply More air allow the vehicle to generate more power.There are a variety of different boosters can be used, including wave formula, Roots Formula, double-screw type and centrifugal.They are the difference is that air is compressed and air is moved to motor intake manifold Mode.

Roots type super charger is positive-displacement pump, forces air around the periphery of rotor and blows air into manifold.Cause This, Roots type super charger is sometimes referred to as " air blower ".More specifically, there are two the leaves of counter-rotating for Roots type super charger tool Shape rotor.As rotor rotates, two rotors are by air capture towards outlet/discharge in gap between rotor and by it Mouth pushes against shell and enters motor intake manifold.By making air with the higher speed of speed than engine consumed cabin air Move into manifold, it is established that pressure.

It is designed since it is simple, Roots type super charger is used widely.However, Roots type super charger has some lack Point.When the chamber for the air that is captured opens wide motor intake manifold, according to thermodynamics and fluid mechanics principle, engine into Forced air reverse flow in gas manifold is into booster.Furthermore, it is possible to there is the air as caused by gap between rotor Leakage, or leaked as caused by the gap between rotor blade and shell, the gap is to thermally expand tolerance and provide. The low efficiency that the reverse movement and air leakage part of air cause roots-type to be pressurized.Also, since it generates high discharge temperature Person's character, it can detract engine performance.For example, it can cause the pinking of engine, mistake when the temperature that air is discharged increases Degree abrasion or cause thermal damage.

In many positive discharge capacity compression set such as reciprocating compressors, increased by reduction by the volume that gas occupies Pressure.For example, the gas compression of large volume is physically smaller volume to increase pressure by piston.However, in roots-type In device, the mechanism as piston does not carry out compressed gas.Root's blower draws air from low pressure suction side and makes The air moves on to high-pressure outlet side.When the low-pressure air and high-pressure outlet side contacts drawn by Roots type super charger, then send out Raw reflux movement, thus high pressure gas from outlet return to booster in and by the gas of low-pressure gas boil down to more high pressure.Cause This, the gas compression in booster is to act to occur by the reflux.According to thermodynamic principles, this is also by compressed low pressure Gas is heated to higher temperature.After gas compression, compressed air is expressed by the blade of Roots type super charger from booster High-pressure outlet side.

In general, the pressure-air of the available heat in exit is used to flow back movement by Roots type super charger.However, it is possible to pass through Roots Compressor is cooled down using relatively cold high pressure gas available after intercooler.But it determines and obtains as pressurization Reflux notch size, arrangement needed for device provides minimum operating temperature, provides the best reflux movement of highest working efficiency simultaneously It is still problem with geometry.

Summary of the invention

In order to improve pressurization, with the pressure ratio for for term being exactly engine, high-pressure ratio is needed.Pressure ratio indicates pressurization The ratio between the compressed absolute air pressure that absolute air pressure and booster before device carry out.In higher pressure ratio or increasing Pressure, bigger air quality is fed to engine, to allow a greater amount of fuel combustions, it is defeated also to obtain higher power Out.

In one embodiment, a kind of axial entrance, radially outlet formula booster include tubular shell.The tubular shell packet Include plane of inlet (IP) and pelvic outlet plane (OP).Plane of inlet is perpendicular to pelvic outlet plane.Rotor mounting recess (1030,1020) position In the inner surface of entry wall (1063) for being parallel to plane of inlet.Triangular-shaped outlet (104) is in pelvic outlet plane.Entrance (101) in plane of inlet.At least two axis flow back to flow port (1222) in plane of inlet (IP).

In another embodiment, a kind of axial entrance, radially outlet formula booster include tubular shell, the tubular shell packet Include plane of inlet (IP) and pelvic outlet plane (OP).Plane of inlet is perpendicular to pelvic outlet plane.Rotor mounting recess (1030,1020) position In the inner surface of entry wall (1063) for being parallel to plane of inlet.Inlet axis (IA) is placed in the middle between rotor mounting recess. Triangular-shaped outlet (104) is in pelvic outlet plane.Entrance (101) is in plane of inlet.Rotor (102,103) with blade is each Including the rotation axis parallel with inlet axis (IA).When the rotor rotates, blade is sequentially engaged along inlet axis (IA). Each blade is reversed along the length of their own rotor.These blades are set the time (to be set in time, are Timed to) seal entrance fluidly relative to outlet.At least two return ports (122,1222) are in tubular shell.

It is a kind of control supercharger systems method include use booster pumped air, the booster include entrance, outlet And return port.The air pumped can be cooled down in intercooler and be arranged to combustion engine.Computing device can receive and locate Manage the sensor signal from sensor.The sensor signal received can be compared with predetermined value to determine in return-flow catheter The aperture of valve, return-flow catheter are connected to the air of discharge being transferred to return port from intercooler.Also, compared according to this, It is capable of the aperture of regulating valve.

Preferably, booster of the invention further includes foreboard, the foreboard by adjusting distance and tubular shell entry wall It separates.It is further preferred that the booster further includes the channel in the foreboard, the channel and at least two axis flow back to end Each alignment in mouthful.More preferably, which further includes the bottom plate between the entry wall and the foreboard, the bottom plate Make the entrance flow back to flow port at least two axis fluidly to separate.

In one embodiment, the rotor with blade include rotatable the first rotor (the first rotatable rotor) and Rotatable second rotor (the second rotatable rotor) is every in the rotatable the first rotor and rotatable second rotor One all includes at least three blades, corresponding gap is formed between each blade, when gap and at least two axis stream When an alignment in return port, one be orientated to the gap that at least two axis flows back in flow port is provided Cooling air from the intercooler, and when to the gap provide cooling air when, the gap relative to it is described enter Mouth and the outlet are sealed.

In one embodiment, the rotor with blade includes rotatable the first rotor and second turn rotatable Son, each of the rotatable the first rotor and rotatable second rotor all include at least three adjacent blades, Corresponding gap is formed between each adjacent blades, when one in corresponding gap at least two return port When one alignment, one be orientated to a corresponding gap at least two return port is provided from described The cooling air of intercooler, and when providing cooling air to one corresponding gap, one corresponding gap It is sealed relative to the entrance and the outlet.

It should be understood that the general introduction of front and subsequent detailed description are only exemplary and illustrative, rather than it is right The limitation of invention claimed.

Detailed description of the invention

Be incorporated in this specification and constitute this specification a part attached drawing instantiate several embodiments and with say It is bright to be used to explain working principle together.

Figure 1A is the schematic diagram of the supercharger systems with cooling air return-flow catheter.

Figure 1B is the schematic diagram of the supercharger systems with cooling air return-flow catheter and with air by-pass conduit.

Fig. 1 C is the schematic diagram of the supercharger systems with combined air return and air by-pass conduit.

Fig. 2A -2C is the example of control system.

Fig. 3 is the chart for showing pressure ratio.

Fig. 4 A is the analog result for being shown without the Temperature Distribution of booster of cooling air reflux.

Fig. 4 B is the analog result shown with the Temperature Distribution of the booster of cooling air reflux.

Fig. 5 is an example of Roots type super charger.

Fig. 6 A-6D is each view of booster main casing.

Fig. 7 is the view of the booster main casing of substitution.

Fig. 8 is the view of the air transmitting between blade.

Fig. 9 is the alternative view of the air transmitting between blade.

Figure 10 is the comparison of the phase diagram of blade timing.

Specific embodiment

It reference will now be made in detail to exemplary embodiments of the present invention now, example is shown in the accompanying drawings.As long as possible, in institute Having will make to be referred to identical reference the same or similar part in figure.Block arrow line shows air-flow direction, unless It is otherwise indicated.

Fig. 1 shows supercharger systems 10, is used for the pig's tongue out by controlling the adjusting of return air booster 100 Part.Booster 100 can have air intake 101, chamber 105 and outlet 104.Supercharger systems 10 are reflux control systems, are used In control reflux movement with adjust booster 100 outlet 104 at temperature.Booster 100 is positive discharge capacity air pump, and can To be roots-type or different types of, such as screw.When initiatively blowing or when pumped air, as air passes through chamber 105, booster 100 heats the air.Booster 100 is for compressing the air for going to combustion engine and increasing engine Power output.Make the outlet air return of high pressure to low voltage control since the low voltage control volume with air is transferred to outlet In volume, therefore compress.System 10 includes being used to flow back for importing cooling outlet air and non-thermal outlet air The mechanism of movement.

The method of the importing of cooling air compared with the prior art increases the pressure ratio of booster during reflux.Pressure ratio Characterize the supercharging amount that booster can be provided to engine, and the Fluid pressure before being booster and the stream after booster The ratio between body pressure.Gas such as surrounding air is the preferred fluid for compression, however, sometimes, due to exhaust gas recirculatioon (EGR), There may be a certain amount of other fluids, are such as vented.

Currently, the pressure ratio of Roots type super charger is limited by the maximum operation temperature or thermoae limit of device.Thermoae limit By oil degradation, the thermal expansion of metal parts (such as rotor and/or shell), operation fatigue and endurance issues etc. because usually It determines.By reducing the temperature of the fluid recycled in booster, the pressure ratio of device is capable of increasing, while being maintained at device Within thermoae limit.

In general, in order to reduce the temperature for the air for going to engine, cooled down using intercooler from booster sky Gas.The reduction of air themperature will increase atmospheric density, therefore this improves the ability that engine generates more high-power and torque.Pass through Cooling air is set to flow back into booster from intercooler, the pressure ratio of booster increases, while reducing the discharge for carrying out automatic pressure intensifier 100 The temperature of air.

In Fig. 1, air intake 101 allows surrounding air to enter booster 100.Air intake 101 is located at tubular shell On, in the plane of inlet IP of the entrance side of booster 100.Chamber 105 can accommodate two rotors 102,103.Each rotor It is rotated around the axis for being parallel to first axle or inlet axis IA.Each rotor can have at least two blades, it is preferred that It is three or four.There are three blade 102A, 102B and 102C for the tool of rotor 102.Similarly, there are three blades for the tool of rotor 103 103A, 103B and 103C.These blades can be parallel or torsion.For the example of twister design, rotor can be height Screw type or master screw type.High spiral is 120 ° of rotors, and master screw is 60 ° of rotors.Each angle indicates rotor in length On torsional capacity.It could be used that other windup-degrees, illustrative slew range are 60-130 degree according to design.

For example, Figure 10 compares the phase diagram of two kinds of exemplary boost devices and the first example of port timing and second is shown Example.On the right, there are two the three blade rotors of the 5th generation GEN V-type manufactured by Eaton company for booster tool.Blade is along it Length reverse 60 degree.The phase diagram of example 1 shows the rotating distance of each blade of rotor.Specified blade carries out 210 degree of rotations Turn to suck air by entrance 1011 or 1012 herein to complete air inlet (entrance) phase.Then blade advances 50 degree to complete Phase is stopped, and advances 40 degree to complete sealing phase.40 degree of vane travels are assigned in reflux movement, and are discharged or are vented 200 degree of vane travels are assigned so that air is blown out booster in phase.It is small by the way that return port 122 and 1222 to be designed to In the vane travels distributed, transmits volume energy and unexpected and permanent reflux is undergone to act.For example, axis flows back to 1222 energy of chute mouth It is enough designed to that 10 to 15 degree rotated in rotor are opened, thus obtains permanent cooling air reflux movement.

There are two the boosters of four-lobe rotor using band for the example 2 of Figure 10.Blade reverses 160 along their length Degree.The air inlet phase time increases to 280 degree, and discharge phase time increases to 220 degree.It stops phase and is reduced to 20 degree, seal phase The position time is reduced to 10 degree.Reflux actuation time increases to 80 degree.If axis flows back to flow port 1222 still as above in blade It is opened in 10 to 15 degree of rotation, then cooling air reflux movement further extends in time.If using bigger axis stream Return port, such as full circle port, then port will not throw open or keep standard-sized sheet for the phase that entirely flows back.In round nose In the case where mouthful, if it is dimensioned to the 30-40 degree fully closed by blade blockage, it can be rotated using blade To fully open the circular port.

Table 1 summarizes the twist blade Gen V (the 5th generation) and TVS (double vortex series) for being manufactured by Eaton company The available exemplary timing range of booster.For specify blade phase, give total timing range and with exemplary increasing The other timing schemes of six kinds of depressor compare.

Table 1

In order to realize throwing open and closing for return port, it is advantageous that port is made to be shaped like blade-shaped Shape.Therefore, Fig. 8 is gone to, upper axis flows back to flow port 1222 and is shown as being aligned with blade 102A.Because port is " beans " shape with big The external curve of matching blade is caused, so port is not exposed to air and leaks into exit volume 140E or transmit in volume 140S. On the contrary, blade can stop cooling air to transmit to seal up the air of side leakages and return to inlet volumetric 140I.Although allowing Cooling air leaks into exit volume 140E, but it is desirable to the extruding for the outlet air that limitation is returned by return port.It can benefit The leakage between axial entrance return port 1222 and outlet 104 is prevented with " beans " shape.It can be cold to limit using this design But air flows back into specified backflow volume 140B in designated phase, as shown in Figure 9.Therefore, it is design that axis, which flows back to flow port 122, At the notch with the profile to match with the segment on involute.The notch can have for smooth air flow profile Rounded edges.The notch of " beans shape " can be described as having the notch of four sides, and each side is circular camber line.Substitution Ground, it is rectangular notch, oval pore or round hole that axis, which flows back to flow port 1222, and size is set as 30 to 40 degree rotated in blade It inside fully opens, and size is set as being blocked completely when blade alignment hole by blade.

Rotor 102,103 can be mutually the same.Alternatively, blade 102A, 102B, 102C of rotor 102 can be reversed clockwise, and Blade 103A, 103B, 103C of rotor 103 can be reversed counterclockwise.For the example of Fig. 1,5 and 8-10, because of rotor 102,103 Blade with torsion, therefore booster 100 can have much better air-treatment characteristic.In addition, booster 100 can generate more Few air impulsive motion and turbulent flow.The length of rotor 102,103 can change.The size of booster 100 can be by the length of rotor 102,103 Degree determines.As rotor 102,103 rotates, these rotors can mesh together along first axle, inlet axis IA, and this A little rotors can engage rotation in opposite direction.

Air into the chamber 105 of booster 100 can be trapped between the adjacent blades of rotor 102 (for example, leaf Between piece 102A and 102B) gap in.Air can also be trapped between the adjacent blades of rotor 103 (for example, blade 103A Between 103B) gap in.The air being captured can be transferred into outlet 104 to be discharged from booster 100.Show shown in In example, booster is axial entrance, radially outlet type booster.This means that inlet air is along being parallel to inlet axis IA's Rotor axis advances in tubular shell.As rotor rotates, air leaves inlet axis IA and radially towards outlet 104 is mobile, and the outlet is in the pelvic outlet plane OP perpendicular to outlet axes OA.Inlet axis IA is vertical with outlet axes OA 's.Outlet 104 can be triangle to match the shape of rotor 102,103, or allow air be easy to leave it is other Shape.Because the volume of transmitted air can be greater than the discharge capacity of engine 120, therefore the air pressure in engine 120 can increase. In other words, Roots type super charger 100 can generate boost pressure and more and more air are stacked into inlet manifold.

Intercooler 110 may include into port 113, outgoing port 111 and recycling pipe 112.Each rotor 102,103 There can be attached recycling pipe 112, so that cooling air is sent back to booster in a balanced fashion.Into port 113 are connectable to the outlet 104 of booster 100 to receive discharge air.Intercooler 110 can be as any of radiator Mechanical device.In addition, intercooler 110 may include bar, plate core and fin (not shown).Once carrying out the row of automatic pressure intensifier 100 Air enters intercooler 110 out, and air just can move and advance to outgoing port 111 by bar and plate core, while be passed by heat It passs and turns cold.The general details of the working mechanism of intercooler is well known, therefore be will not be described herein.Intercooler 110 Size, shape and design can according to the performance and space requirement of supercharger systems significant changes.Intercooler 110 can be sky Gas-air type or Air-Water formula.

Cooling air is arranged the inlet manifold 121 to engine by outgoing port 111, and can pass through can for outgoing port 111 The valve 114A and valve sensor and actuation means 114 of choosing are connected to conduit 112.The left side of the outside exit port 111 of 112 energy of conduit, Right side or two sides are branched off.The other end of conduit 112 is connected to the runoff return port 122 of booster 100, so that cold But air can transmit between the blade of rotor.Alternative embodiment can be able to achieve conduit and individually flow back to flow port 1222 with axis The connection of connection or combination with runoff return port 122 together.

Some supercharger systems reduce the noise come out from booster using return port.As the outlet air for receiving heat The substitution of reflux, can be received using runoff return port 122 from conduit 112 cooling air.This, which can reduce, is derived from The noise of booster work.Therefore, pliable (NVH) ability of noise, vibration and injustice of booster can be improved with conduit 112.

Size, shape and position that runoff and axis shown in figure flow back to flow port 122,1222 may be needed to adjust, with Optimal cold air input is provided to booster.The cold air runoff return port 122 of Fig. 5 after entrance 101 and outlet 104 It is located on main casing 106 before.That is, runoff return port 122 is different from entrance 101 and outlet 104.Runoff reflux end Mouth 122 can be aligned the gap between the blade of rotor, so that with rotor rotation, when gap is by runoff return port 122 When cooling air mixed with the air inlet in gap.In order to ensure appropriate mixing, the distance between entrance and runoff return port Greater than the distance between gap and its adjacent reflow port.Compare more from entrance as shown in figure 5, runoff return port can separate out mouth Closely.

The size and shape that runoff and axis flow back to flow port 122,1222 is also set to form " sealed volume " in rotor Cooling for reflux air is imported between rotor at position.That is, rotor rotates so that air is moved from the entrance of booster It moves to outlet, and there are a positions, the gap between blade is all sealed from entrance and exit at this location.Pass through diameter Stream and axis flow back to the strategic arrangement and shape of flow port 122,1222, and cooling for reflux air is directed to the gap or seal In product.

For example, two runoff return ports 122 can be used, as shown in figure 5, can be used one, as shown in Fig. 6 A-9. Runoff return port 122 can be it is linear or arc-shaped, as indicated, can be other adjustable shapes, such as Egg shape or circular shape.Preferably, the shape of port allows throwing open and closing for port, to make reflux act with very high speed Degree occurs suddenly.

Entrance side axle flow back to flow port 1222 by be located in entrance side and positioned at make cooling air from booster compared with Low-pressure, the lateral high pressure of entrance of lower temperature, high temperature the position that is drawn of outlet side at and promote to push back through cooling height Flow the axial flowing of air.Return air the track that entrance side axle flows back at flow port 1222 be along inlet axis IA, and And therefore, the cooling air of high pressure is along rotor length torrent, as shown in the block arrow in Fig. 9.Therefore, entrance side axle flows back to Port 1222 supplements the axial entrance of booster, radially outlet design.

Can flow port 1222 only be flowed back to, only with outlet side runoff return port 122 or with entrance side axle stream with entrance side axle The combination of return port 1222 and outlet side runoff return port 122 executes cooling air reflux.Therefore, the quantity of return port In the case where six, two being changed to from two, each rotor has an a port, and in the case where six, there are three each rotors Port.If port is made smaller, greater number of port can be implemented for each rotor.

As shown in Fig. 6 A-7, runoff return port 122 can be reduced to two from four in 104 side of the outlet of main casing 106. Axis flows back to flow port 1222 and is added in entry wall 1063 in 101 side of entrance of main casing.In main casing 106, entry wall 1063 inside includes rotor mounting recess 1020 and 1030 in the plane for being parallel to plane of inlet IP.In other alternative In case, main casing flows back to flow port 1222 by axis and constitutes, and does not include any runoff return port 122.

Tubular main body 106 includes foreboard 1060.In fig. 6, foreboard 1060 includes machining channel 1061 to be led to The processing access of flow port 1222 is flowed back to axis.Receive plug to seal foreboard 1060 after machining in channel 1061.Substitution Ground, recycling pipe 112 are connected to channel 1061 to promote axial return air flowing and have less air wave reflection.For Connected convenient for conduit, channel can be " mushroom " shape shown in addition to other shapes, such as round, oval, rectangle or Square.Fig. 7 eliminates channel 1061 to advantageously form the foreboard 1060 of sealing.

Adjustment distance TD between entry wall 1063 and foreboard 1060 is selected to that return air is allowed to be connected to axis and flow back to Flow port 1222 is without will form air toward the excessive standing wave or reflection returned to except chamber 105.Adjustment distance TD is selected At limitation flow losses and the air throttle flowed back in flow port 1222 is controlled to axis.The additional control of flowing by intercooler with The length and diameter of recycling pipe 112 between return passage 1075 determines.Return passage 1075 can include being exposed to diameter to flow back to The volume of air of flow port 122 and it is exposed to the volume of air that axis flows back to flow port 1222.At least one lattice 1062 and pipe The wall 1064,1065 of shape shell cooperates and is cooperated with foreboard 1060 to form return passage 1075.

Entrance 101 optionally includes support portion 1010.As described above, entrance 101 is supplied to the rotor 102,103 of booster Air inlet or bypath air.Support portion 1010 is to distribute to the entrance area 1011 of rotor 103 and distribute to rotor 102 in figure 6 c Entrance area 1012 provide instruction.Entrance 101 can be described as extending a certain amount of of tubular shell.But also advantageously, Entrance is limited for each rotor, so that entrance area 1012 has in the border circular areas for distributing to rotor 102 of entry wall 1063 There is entrance span, theta_I.Using the convenience benchmark, inlet face is divided into 360 degree around the midpoint of rotor mounting recess 1020.Sealing Span, theta_SOccupy another part of entry wall 1063.Axis flows back to flow port 1222 and occupies reflux span, theta_B, and border circular areas its Remaining part point is adapted to discharge phase and rotor engagement for rotor stroke.It is recessed that the mirror image of each angular span is suitable for rotor installation Portion 1030.

Entrance 101 is opened via bottom plate 1071 and the backflow volume sealing in integrated manifold 1070.The bottom plate can be shell The insert seal part or a part of casting.Support portion 1010 is connected to the bottom plate 1071 of integrated manifold 1070.Bottom plate 1071 exists Integrated manifold 1070 is cooperatively formed between entry wall 1063 and foreboard 1060 and with the extension of wall 1064 and 1065.Bottom plate 1071 make entrance 101 and axis flow back to flow port 1222 and providing physical separation between entrance 101 and integrated manifold 1070 Fluidly separate.Therefore inlet air cannot be mixed with cooling for reflux air.

Entrance 101 extends through foreboard 1060 and intersects along entry wall 1063 with plane of inlet IP.Axis flows back to end Mouth 1222 is also in plane of inlet IP.Plane of inlet IP is shown as from Fig. 6 C perpendicular to inlet axis IA, inlet axis IA The page come out.

Outlet 104 and when use when runoff return port 122 in the pelvic outlet plane OP perpendicular to plane of inlet IP.Out Mouth plane is also parallel with inlet axis IA.The page that outlet axes are shown as from Fig. 6 B comes out.Outlet axes are perpendicular to entering Mouthful axis IA and perpendicular to pelvic outlet plane OP, as shown in Figure 6A.When description booster is axial entrance, radially outlet device When, convenient explain is that air moves into turbocharger inlet 101 and along axially or along the armature spindle for being parallel to inlet axis IA Line flows back to flow port 1222 by axis.When booster works to inlet air and return air, air is directed into relatively In rotor axis radially away from outlet 104, it means that air along or be roughly parallel to outlet axes OA be discharged.This makes this Booster is different from radial entrance, radially outlet device, these devices do not have identical air-flow character or leakage constraint.

Adjustment distance TD separates the foreboard 1060 of main casing 106 and entry wall 1063.Adjustment distance TD is selected to adjust Section flows back to the flowing of flow port 1222 through cooling return air to axis.Integrated manifold 1070 flows back to pair of flow port 1222 with axis It is selected to guidance air stream together and enters chamber 105 along the direction of outlet 104.It is flowed by guidance, compared to runoff reflux end Mouth 122, booster works less to blow out air, because air exists along rotor when rotor rotation in chamber 105 Axis flows up.

Using the example of Fig. 8 and 9, intercooler 110 is left through cooling return air and is led to return passage 1075.Leaf Piece 102A-102D and 103A-103D along their own rotor length reverse and be it is hollow, such as by hollow portion 102H With 103H mark.Referring to Fig. 8, blade 102B and 102C be exposed to entrance 101 and allow the air of inlet volumetric 140I into Enter main casing 105.Blade 102D is sealed against main casing 105.Blade 102A also abuts main casing 106 and seals and stop its attached The runoff return port 122 that the axis of category flows back to flow port 1222 and stops its attached.The transmitting volume 140S of sealing is formed in Between blade 102A and 102D.The exit volume 140E of air is exposed to outlet 104 between blade 102A and 102B.

When rotor 102 rotates again, as shown in figure 9, blade 102A no longer block axis flows back to flow port 1222 and no longer Stop runoff return port 122.It can enter the gap between blade 102A and 102D now through cooling return air.Although no It is required that still opened with entrance and exit sealing it is desirable that transmitting volume, still, the air and warp of the transmitting volume 140S sealed Cooling return air mixes and forms reflux transmitting volume 140B.As inlet air moves on to outlet, inlet air from entrance It is heated.Follow thermodynamic principles through cooling return air, shift to high temperature from low temperature and shift to low pressure from high pressure, thus from The arrival end of rotor 102 is forwarded to outlet 104.As a result, booster blows out a greater amount of skies between blade 102A and 102D Gas.

When the engagement of rotor 102,103 in Fig. 8 and 9 and counter-rotating, the timing of rotor is being different from rotor 103 The time of rotor 102 is exposed to the input of cooling for reflux air.So when 102 block axis of rotor flows back to flow port 1222, rotor 103 make the gap between blade 103A and 103B be exposed to cooling for reflux air to form reflux transmitting volume 141B.Work as rotor 102 fully expose its axis when flowing back to flow port 1222, and rotor 103 stops its axis to flow back to flow port 1222.Stop or exposes Degree by the shapes and sizes of blade 102A-102D, 103A-103D and by axis stream and runoff return port 122 and 1222 Shape, position and size determine.

As shown in figure 8, the shape and orientation and axis stream and runoff return port of blade 102A-102D, 103A-103D 122 and 1222 shape and orientation is complimentary to one another.This complementary pairing allows to seal and the adjustment of timing.Therefore, with Blade passes through return port, and sealing transmitting volume is in difference and reflux transmitting volume communication.As above, axis stream or runoff reflux end It is mouthful mutual with or without the use of allowing to reflux characteristic and thus the compression ratio of booster carries out additional adjustment.

Therefore, for the compression ratio demand of client, system can be designed to operate booster with ideal rotor speed to obtain Ideal compression ratio is obtained, and the size of blade, orientation and timing are selected to one in supplement axis stream and runoff return port The use of person or both is further to adapt to the realization of target compression ratio.The bigger control of standing wave in chamber 105 is able to It realizes.The bigger control of outlet pulsation is achieved.

As air stream customization regulation annex point, input 104 length and diameter be selected to influence chamber 105 in The length of standing wave.Therefore, not only integrate manifold 1075 adjustment distance TD be it is controllable, it is also controllable for inputting 104 length.

At least one lattice 1062 is separated exporting 104 with return passage 1075.Outlet 104 and lattice 1062 can with make The pipeline that air is connected to intercooler unit matches.Also, lattice 1062 and return passage 1075 can be with recycling pipes 112 Match.

The width of the outgoing port 111 of intercooler can consider size, type and the space of specific booster, together with others It can require and be designed to meet the needs of specific booster.For example, the width energy specific run off return port 122 of outgoing port 111 Width it is much broader.As an example, when the width of the single return-flow catheter 112 used is 8mm, port 111 of going out Width can be 43mm.In other designs, runoff and/or axis flow back to flow port and attached conduit and can have than outgoing port 111 and its big cross-sectional area of attachment tube.Port and pipe size be specific application and be adjusted to ensure that from supercharger outlet to Intercooler, the fluid stream to return port.Therefore, the law of thermodynamics of pressure and temperature influences return port positions and dimensions, The cooling air for leaving intercooler 110 is enabled to flow back into booster 100 by conduit 112.

As an example, runoff and axis flow back to the size of flow port 122,1222 by port area A_PortFollowing estimation Formula determines:

Wherein, P₁It is inlet pressure, P₂It is the maximum pressure ratio of outlet, T₁It is inlet temperature, T₂It is outlet temperature, R is gas Body constant, N_RPMIt is the maximum (top) speed of booster, unit is rev/min (" RPM "), V_{TransferVolume}It is transmitted air body Product, α₁Refer to and determines inlet temperature T₁Under the velocity of sound, γ such as is at the specific heat ratio for the pressures such as holding.

Port area A_PortIt is determined that distributing the great gross area for the transmitting of cooling for reflux air.Therefore, axis is distributed to The area summation for flowing back to flow port 1222 and/or runoff return port 122 should reach port area A_Port.Ideal port surface Product A_IPortIn A_PortA quarter (1/4) in the range of 4 times.More specifically, ideal port area A_IPortFor A_Port's Half (1/2) is to 2 times.More specifically, ideal port area A_IPortIt is A_Port2/3rds (2/3).

Promote axial air flow towards outlet 104 because axis flows back to flow port 1222, therefore advantageously, distribution port area A_PortWholly or largely give these return ports.Accordingly, it is considered to limit to timing, axis, which flows back to flow port 1222, to include Feasible port area A as big as possible_PortEven if supporting to omit runoff return port 122.But if necessary to other Area meets port area A_Port, while the blade rotation for meeting above-mentioned 10-15 degree to 30-40 degree is used to open axis and flows back to Flow port 1222, then should just distribute additional area to runoff return port 122.When requiring king-sized port area When, it may be desirable to including multiple runoff return ports 122, as shown in Figure 5.When physically inlet area is by the constraint installed, Axis must be omitted and flow back to flow port 1222 to be conducive to only with runoff return port 122.Therefore, there can be one or more groups of reflux Port meets design constraint.It distributes one or more return ports and executes the cooling of backflow volume 140B, while preventing air Entrance is leaked back towards, minimize from the extruding for exporting 104 and preferably allows for throwing open and closing for return port.

For example, for only there is axis to flow back to flow port 1222 without the booster of runoff return port 122, through cold But return air enters the transmitting volume 140S sealed to form reflux transmitting volume 140B.Manifold 1075 is integrated by low pressure The sealing of the cooling for reflux volume of air of inlet air and higher pressure is opened.Cooling for reflux air parallel is going out in rotor and along air The directions of 104 discharge of mouth enter axis and flow back to flow port 1222.The blade of rotor 102 and 103 configured as in Fig. 8 and 9 to prevent Only " short circuit " between inlet volumetric 140I, 141I and reflux transmitting volume 140B, 141B.That is, cooling for reflux air It cannot be communicated with entrance 101, because blade is sealed against return air and reaches entrance 101.As described, wishing to have close Transmitting volume 140S, 141S of envelope does not communicate before cooling air reflux with entrance 101 or outlet 104.Although may permit Perhaps reflux transmitting volume 140B is connected to some between outlet space 140E, 141E, but in this illustration, entrance, reflux It is independent of one another with outlet air volume.The Sealing period of 15-45 degree is provided.The reflux angle of 20-50 degree is also provided.Also apply The rotor of 60-130 degree reverses.

Other than runoff and axis flow back to the width of flow port 122,1222, moreover it is possible to adjust the length of return-flow catheter 112 with Adjust the reflux to booster.The position that runoff and/or axis flow back to flow port is selected to cooling air being ejected into booster In to cool down air mass.The ideal position of injection air is in the sealed volume between the rotating vane of rotor.That is, rotor The position at place is opened by the air mass sprayed with entrance and exit seal.In order to customize cooling effect, it is moved back to eddy pressurizer blade Air capacity must be controlled.It is adjustable to be injected between the blade of booster by selecting the length and width of return port Air, thus adjustment flowing.By the amount of control flowing, such as by valve (as described below), obtain other adjustment.

By making cooling air flow back and mixing with the input of the air of booster 100, air will be more closely deposited in In inlet manifold 121.Pressure ratio is higher by the accumulation of the air than not mixing with cooling air.In other words, by using next High pressure cold air from the outlet of intercooler 111, the temperature inside booster 100 can reduce.Therefore, higher pressure can be obtained Than.Therefore, bigger pressurization can be provided to engine 120 without increasing the size of booster 100.

In addition, because cooling air is mixed with the air in booster, therefore the air exported from booster can be more It is cooling, therefore improve efficiency of combustion.Meanwhile low temperature can allow booster 100 to reach more before the thermoae limit for reaching booster High pressure ratio.In addition, because the air for entering booster 100 is mixed with the cooler air to be flowed back by conduit 112, therefore be pressurized Device 100 will suck the air hotter than common booster.In other words, the supercharger systems through retrofiting can improve pressurization The ability of device processing high temperature air inlet.

For example, tolerance can be reduced strategically, blowed because cooling for reflux air prevents booster from reaching derived from air inlet High fever.Alternatively, higher intake air temperature can adapt to usual tolerance, because cooling air will make integrated air temperature just In normal working range.Since the relationship between thermal expansion tolerance and outlet temperature is linear, so if outlet temperature drops Low, then the tolerance between rotor can reduce, and the tolerance between rotor and shell can reduce the reduction by one with outlet temperature The percentage of sample.

There can be further advantage using recycling pipe 112 in supercharger systems 10.In the system of the remodeling, Neng Gouti High EGR (exhaust gas recirculatioon) processing capacity, because can be cooled down by return air by the air that EGR is recycled.

The efficiency of booster 100 also can be improved in conduit 112.The temperature that can reduce outlet 104 with conduit 112, goes forward side by side And reduce the bulk temperature working range of booster 100.If reducing bulk temperature working range, rotor and shell it Between tolerance can become tightly, and therefore improve booster 100 working efficiency.

The arrangement that runoff and axis flow back to flow port 122,1222 can be far from entrance 101 and outlet 104, and close to rotor 102,103.The size and shape that runoff and axis flow back to flow port 122,1222 be designed to optimize cooling air from intercooler to Flowing between rotor blade, while reducing the use of the port as air outlet slit to the greatest extent.By the size for selecting conduit 112 (length, width, height), and movement of the pressure-air to low-pressure area is utilized, cooling air is moved back to hot cell 105.

Figure 1B is showing for the supercharger systems 11 with cooling air return-flow catheter 112 and with air by-pass conduit 115C It is intended to.System 11 allows air to be bypassed around when combustion engine does not need the full capacity of booster.So require it is limited Engine booster or do not require in period of engine booster, air can get around from engine 120 and return to booster 100 Entrance 101.By-pass conduit 115C is shown as after intercooler 110, and still, other positions are also possible.It is caused by bypass Dynamic device 115 controls by-passing valve 115A.Other than actuating mechanism and electronic controller, bypass actuator 115 can also include sensing Device is to receive instruction and send signal to open or close parameter for controlling by-passing valve.

Fig. 1 C is the schematic diagram of the supercharger systems 12 with combined air return and by-pass conduit.Multi-way valve 116A is logical It crosses combined catheter 116B and receives the cooling air from intercooler outlet 111.Other than actuating mechanism and electronic controller, cause Dynamic device 116 can also include sensor to receive instruction and send signal to open or close parameter for controlling multi-way valve 116A. Multi-way valve 116A can be controlled so as to make the air in by-pass conduit 115C around the entrance 101 of booster 100.Multi-way valve 116A is also Bootable cooling air reaches runoff return port 122 by conduit 112.Although multi-way valve 116A is shown as single valve, It can be advantageously, using more than one valve or being branched off into the additional conduits for realizing and bypassing and flowing back principle.

Figure 1B and 1C are provided to controlling of act of reflux and being capable of temperature and stream at the outlet 104 to booster 100 Amount is adjusted.That is, by-passing valve 115A or multi-way valve 116A can be controlled so as to be supplied to the sky of entrance 101 Gas adjusts charge flow rate.Reflux movement can be adjusted by control valve 114A or multi-way valve 116A.Although in Figures IA-1 C only Runoff return port 122 is shown, still, as described above, can only have axis flows back to flow port 1222, multiple runoff return ports 122 or axis stream and runoff return port some combinations.

Fig. 2A shows the control mechanism 20 of the reflux control system for Figure 1A.Control mechanism 20 can be programmed to control Reflux acts so as to adjust the temperature at the outlet 104 of booster 100.Control mechanism 20 can be implemented by adjusting return air Method for controlling the exit condition of booster 100.

Control mechanism 20 can control the air circulation by system 10, so that a part of cooling air be allowed to flow back into pressurization Device 100.Sometimes, stopping reflux may be advantageous, therefore be attached to the actuator 114 of valve 114A, control mechanism by control The amount of cooling air can be adjusted to always maximum from zero by 20.It calculates and controls according to engine airflow demand and temperature requirements The maximum of reflux is made, and therefore can be according to operating condition and different because of vehicle difference and driver's difference.

Control mechanism 20 can control whether carry out reflux or bypass movement.When booster initiatively blows air to engine When, 20 control valve 114A and 116A of control mechanism is to provide reflux movement.But when not needing be cooling, or work as booster When idle running, control mechanism controls by-passing valve 115A and valve 114A or valve 116A so that air raps around to the entrance side of booster.Such as Fruit air is cooled down by intercooler 110, then bypath air can cool down booster and flow through the passive (non-to blow) empty of system Gas.Because always not needing this passive cooling, by-passing valve 115A can be connected to before intercooler 110 with will be uncolled Air raps around in system.

Control mechanism 20 can be a part of control mechanism used in vehicle, such as car-mounted computer, computing chip With various other processing units perhaps of control vehicle operation.Control mechanism includes usual computing element, for example, send and Receiving port, processor, memory and programming.

Control mechanism 20 can be a part of control unit of engine (ECU).Control mechanism 20 can include controller 150, the actuator 114 of sensor 151,152,153 and operation valve 114A.Actuator 114 can include sensor, close for collecting In the data of the aperture of valve 114A.The quantity and arrangement of sensor can change according to the feedback control implemented, and therefore System can have sensors more more or fewer than the example and actuator.Sensor can be it is various types of, can Detecting state and transmission signal, such as temperature, pressure, speed or air mass flow (speed).The sensor can include a variety of Type, therefore sensor can measure various states, such as both temperature and air mass flow.

Valve 114A can open or close the operating mode for being suitable for vehicle as determined by controller 150.Valve 114A Aperture can be changed to from standard-sized sheet it is fully closed.

Can be determined by the air themperature at measurement outlet 104 or temperature in engine 120 opening of valve 114A/ It closes.In addition, the temperature reading for the air being discharged from outgoing port 111 can also influence open/closed valve 114A or regulating valve The decision of the aperture of 114A.

Sensor 151 can be mass air flow sensor (MAF), measure the mass flow in engine 120.Example Such as, sensor 151 can be hot wire sensor.Sensor 151 can be placed in engine 120.The reading of sensor 151 Ensure just to be fed into the optimum air amount of engine 120.Sensor 151 also can measure in-engine temperature.

Sensor 152 can be temperature sensor, and the temperature for being blown from air of the outlet 104 of booster 100 is left in measurement Degree.Sensor 152 also can measure the flow of air.The air blown out from booster 100 can need before entering inlet manifold 121 It is sufficiently cool.It is not in maximum power active combustion mistake if air is not sufficiently cooled, in engine 120 Journey.Therefore, air themperature, which may require that by intercooler 110, reduces to reach optimum temperature to realize in engine 120 more High efficiency and more powerful burning.By making cooling air flow back into booster 100, the air at outlet 104 is substantially reduced. Also, when in order to engine effectively work the temperature that must increase air when, can regulating valve 114A come limit cooling air return Stream.

Sensor 153 can be pressure sensor, measure the air pressure formed in the inlet manifold 121 of engine 120. The purpose of booster 100 is to provide pressurization for engine 120, to allow 120 power of engine stronger.Pressurization is with term pressure Power than providing, pressure ratio be booster before absolute air pressure with by the compressed absolute air pressure of booster 100 The ratio between.Therefore, it is critically important for having pressure appropriate into the air of inlet manifold 121.Pressure sensor 153 can be located at hair To provide feedback to controller 150 in the inlet manifold 121 of motivation 120.

Reading from sensor 114,151,152 and 153 is transmitted to controller 150.150 energy of controller will be from sensing Each reading that device 114,151,152 and 153 receives is made comparisons with predetermined value.These predetermined values can be calculated best Value, they have been saved in control system, alternatively, these predetermined values can be according to the calculating of vehicle dynamic realtime.

For example, the reading from sensor 151 can be equal to predetermined value.This means that into engine present air amount and Air into booster is optimal.Therefore, if controller 150 determines that the reading from sensor 151 is equal to predetermined value, It can so take no action to.On the other hand, the reading from sensor 151 may be not equal to predetermined value.This means that into Engine or leave booster air present flow rate or temperature be not optimal.In this case, controller 150 removes it The signal that valve 114A is opened or closed using actuator 114 can also be issued outside its adjustment signal.By opening or closing valve 114A, The temperature of booster can be adjusted.By control reflux movement, outlet pressure pulsation can be influenced according to expected result.Except other works Make outside state, moreover it is possible to implement other control mechanism to adjust the revolving speed of booster 100.Remaining sensor can be made similar Judgement and adjusting.

Controller 150 can adjust the air capacity in conduit 112 by the aperture of control valve 114A.Similarly, controller 150 can adjust other working conditions, such as the aperture of air throttle.By having reflux or into booster 100 air There is amount appropriate, it can be ensured that the efficiency of supercharger systems 10.

Fig. 2 B and 2C show the control mechanism 21 and 22 of substitution.Control mechanism 21 corresponds to the system 11 of Figure 1B.It is similar to Description to Fig. 2A, the controller 150 of Fig. 2 B can adjust reflux movement.The also transmittable signal of system 11 gives bypass actuator 115 To control the air capacity for bypassing engine 120.This is able to achieve more controls to the air capacity for entering booster 100.

Fig. 2 C is similarly controlled the multichannel actuator 116 of multi-way valve 116A and around entrance 101 or is supplied to custom tailored The cooling air volume of runoff return port 122.

Engine air capacity demand can be based on various other vehicle operating status, therefore, in addition to and predetermined value ratio Compared with except, or substitute it, additionally it is possible to which real-time perfoming calculates.Therefore, the simplified control mechanism of Fig. 2A, 2B and 2C can be enhanced and is It including additional sensor and feeds back and other vehicle controls can be bundled in, such as accelerate, yaw, tumble, slide, brake Deng.Therefore, change with engine air capacity demand due to these other factors, cooling air reflux and side can be adjusted Logical movement is with the air themperature at custom tailored outlet 104.

It is tested at 14,000RPM to test the influence of cooling air reflux.It will illustrate these realities using Fig. 3 now Test the result of middle acquisition.Curve in Fig. 3 illustrates the pass between temperature and obtainable pressure ratio at supercharger outlet 103 System.Fig. 3 draws out the curve of the experimental data obtained under the revolving speed of 14,000RPM.The temperature of longitudinal axis expression supercharger outlet 103 Degree, and horizontal axis indicates pressure ratio.When doing this experiment, thermoae limit is set to 150 degrees Celsius.Thermoae limit or highest work temperature Degree is one of the parameter of pressure ratio for determining Roots type super charger.If the pressure for providing booster increases without increasing The temperature of supplied air, then much higher pressure ratio can be obtained.Constant inlet temperature is 27 degrees Celsius.It is used in experiment Booster be Eaton company manufacture M45 Roots type super charger, it is similar with example shown in fig. 5.

The data that curve illustrates are the pressure ratio of the M45 booster of no cool air reflux and the M45 for having cool air reflux The pressure ratio of booster.The curve of the M45 booster of obtained no cool air reflux tilts about 45 degree, than there is cool air reflux The case where more sharply.

These results indicate that for specifying thermoae limit, higher-pressure ratio appears in the M45 booster of cool air reflux In.Fig. 3 is shown, and at 150 degrees Celsius, the pressure ratio of the M45 of no cool air reflux is 2.2.In order to obtain the pressure for being higher than 2.2 Must be over the operation of its thermoae limit than, booster, this due to the thermal expansion of component and the interference of tolerance but it is unpractiaca.So And by having cool air reflux in M45 booster, pressure ratio is increased to about 4.5, but is less than thermoae limit.

Other than test cooling for reflux air is to the experiment of the influence of pressure ratio, also influence of the simulation reflux to temperature. Fig. 4 A shows influence of the cooling air to the air themperature at supercharger outlet compared with 4B.The simulation is in 6000RPM It is carried out under supercharger speed.Fig. 4 A shows the analog result of the Temperature Distribution in the supercharger systems of no cool air reflux.It is empty Gas enters booster 100X and is heated and arranges to intercooler 110X.Return-flow catheter 122Y allows the air inlet port being discharged 122X.Air is heated by the pump action of booster 100X, therefore the air being discharged is warmmer compared to inlet temperature.It gives Surely include the constant that pressure ratio is 2 and inlet temperature is 300K, simulate the Temperature Distribution (K) in supercharger systems.In measurement, Outlet temperature causes the temperature of 135K from the inlet to the outlet to increase close to 435K.

On the other hand, the supercharger systems for having cooling air to flow back in Fig. 4 B are presented lesser temperature and increase.Air into Enter booster 100 and is discharged to intercooler 110.After leaving intercooler, cooling air is advanced through conduit 112 and is flowed back into Booster 100.Outlet temperature is 388K, and thus net temperature rise from the inlet to the outlet is only 88K.Therefore, in supercharger systems Cool air reflux reduce the air themperature at supercharger outlet.

Fig. 5 shows the model for the booster 100 that can be used in supercharger systems 10,11 and 12.Booster 100 is axially to enter Mouth, radially outlet type.Inlet air flow path is shown with arrow, and therefore, the air on the right side of the page into air intake is in the page The triangular-shaped outlet 104 in center is discharged.A part of shell is removed to show the inside of main casing 106.Booster 100 can be with It is other Roots type super chargers of such as M45 or Eaton company manufacture, including double vortex (TVS) types.Fig. 5 shows booster 100 Section, there are multiple runoff return ports 122 for communicating with each rotor.Booster 100 has there are two rotor 102,103, Rotor all has there are three blade.Two rotors 102,103 are placed in housing cavity 105.Runoff return port 122 can be placed in out Mouthful every side and close to each rotor 102,103.By placement runoff return port 122 to direct air into each rotor Adjacent blades between, cooling air can be mixed effectively with air inlet to reduce the temperature for the air for being just sent booster 100.

Runoff return port 122 can be placed in main casing 106 to connect with recycling pipe 112.Main casing 106 can shape The casting of flow port 122 is flowed back to as restriction entrance 101, outlet 104 and runoff and/or axis.Main casing 106 can include collection At multiple sections together, and main casing 106 can be formed in conjunction with other shell parts around rotor, rotor pedestal, The air capsule of other work structuring of gear-box and booster 100.

In specification in front, each preferred embodiment is described with reference to the accompanying drawings.It will be apparent, however, that They can be made it is various other remodel and change, and implementable other embodiment is without departing from appended claims Wider range.Therefore, the specification and drawings should be considered to be descriptive and not restrictive.

By considering this specification and practice of the invention, for a person skilled in the art other embodiments will be it is aobvious and It is clear to.For example, it may be possible to have sustainer intercooler, such as intercooler 110, and it is exclusively used in each return-flow catheter 112 or reflux Other intercoolers of port 122.This specification and example should be seen as being only exemplary, true scope of the invention and essence Mind is shown by appended claims.

Claims

1. a kind of axial entrance, radially outlet formula booster, comprising:

Tubular shell, the tubular shell include:

Entry wall；

Perpendicular to the inlet axis of the entry wall；

Across the entrance of the entry wall, the inlet configuration is parallel to the inlet axis guidance at by inlet air；

Outlet, the outlet is configured to for the inlet air being discharged perpendicular to the inlet axis；

Two rotor mounting recess, the rotor mounting recess are located in the inner surface of the entry wall, the inlet axis position Between described two rotor mounting recess；

Rotor with blade, each rotor with blade include the rotation axis parallel with the inlet axis；With

At least two axis in the entry wall flow back to flow port, they are configured to, and guidance is parallel with the inlet axis to return Flow air.

2. booster as described in claim 1, wherein it is all slot that at least two axis, which flows back to each of flow port, Mouthful, which has the profile to match with the segment on involute.

3. booster as described in claim 1, wherein the tubular shell further includes at least two runoff return ports.

4. booster as claimed in claim 3, wherein at least two axis flow back to each of flow port and it is described extremely Each of few two runoff return ports are all that there are four side and this four for rectangular notch, oval pore, round hole or tool Side is all one of the notch of circular arc.

5. booster as claimed in any one of claims 1-3 further includes foreboard, the foreboard by adjusting distance with it is described enter Mouth wall separates.

6. booster as claimed in claim 5 further includes the channel in the foreboard, the channel and at least two axis Flow back to each alignment in flow port.

7. booster as claimed in claim 5, further includes the bottom plate between the entry wall and the foreboard, the bottom plate makes The entrance flows back to flow port at least two axis and fluidly separates.

8. booster as claimed in claim 7, further includes the support portion in the entrance, the support portion is abutted against the bottom Plate.

9. booster as claimed in claim 1 or 2, wherein at least two axis flows back to flow port in the tubular shell In the return port area A that occupies_PortIt is determined by following formula:

Wherein, P₁It is inlet pressure, P₂It is the maximum pressure ratio of the outlet, T₁It is inlet temperature, T₂It is outlet temperature, R is gas Body constant, N_RPMIt is the maximum (top) speed of the rotor in booster, unit is rev/min V_{TransferVolume}It is transmitted air body Product, α₁Refer to and determines inlet temperature T₁Under the velocity of sound, γ such as is at the specific heat ratio for the pressures such as holding.

10. booster as claimed in claim 9, wherein the axis flows back to the ideal port area A that flow port occupies_IPort? The return port area A_PortA quarter in the range of 4 times.

11. booster as claimed in claim 10, wherein the ideal port area A_IPortIt is the return port area A_PortHalf to 2 times.

12. booster as claimed in claim 10, wherein the ideal port area A_IPortIt is the return port area A_Port2/3rds.

13. booster as claimed in claim 9 further includes at least two runoff return ports, the return port area A_Port It further include the area that at least two runoffs return port occupies.

14. booster as claimed in claim 10 further includes at least two runoff return ports, wherein the ideal port surface Product A_IPortAlso occupied by at least two runoffs return port.

15. booster as described in claim 1, wherein when rotor rotation, the blade is along the inlet axis It sequentially engages, wherein each blade is reversed along the length of their own rotor, and wherein these blades are set the time To seal the entrance fluidly relative to the outlet.

16. booster as claimed in claim 15 further includes at least two runoffs reflux of the either side positioned at the outlet Port.

17. booster as claimed in claim 15, wherein each rotor with blade is rotated to move the blade on rotor, And blade rotates 210-280 degree to complete air inlet phase, and blade rotates 0-50 degree to complete to stop phase, and blade rotates 15- 70 degree to complete sealing phase, blade rotates 20-70 degree to complete reflux phase, and wherein, blade rotate 200-220 degree with Complete discharge phase.

18. booster as claimed in claim 15, wherein each rotor with blade is rotated to move the blade on rotor, And blade rotates 210-280 degree to complete air inlet phase, and blade rotates 20-50 degree to complete to stop phase, and blade rotates 10- 50 degree to complete sealing phase, blade rotates 20-80 degree to complete reflux phase, and wherein, blade rotate 200-220 degree with Complete discharge phase.

19. the booster as described in any one of claim 15-18, wherein at least two axis flows back in flow port 10 to 15 degree for being each configured to rotate in blade are opened.

20. the booster as described in any one of claim 15-18, wherein at least two axis flows back in flow port 30 to 40 degree for being each configured to rotate in blade are opened.

21. the booster as described in any one of claim 15-18, wherein at least two axis flows back in flow port 10 to 40 degree for being each configured to rotate in blade are opened.

22. the booster as described in any one of claim 15-18, wherein at least two axis flows back to the ruler of flow port It is very little be set to when blade rotate to it is completely corresponding when at least two axis flows back to before the corresponding port in flow port Leaf baffle.

23. the booster as described in any one of claim 15-18, wherein each blade has profile, and wherein, institute It states at least two axis and flows back to the segment that each of flow port is shaped to the blade profile.

24. booster as claimed in claim 6 further includes the recycling pipe for being connected to the channel.

25. booster as claimed in claim 1 or 2, further includes:

Intercooler comprising entrance and exit, the intercooler connect into from the outlet of the booster and receive the sky being blown from Gas and the cooling and received air of discharge institute is connected into as return air；With

Conduit, at least two axis that the conduit connects the booster flow back to the outlet of flow port and the intercooler with Receive the return air.

26. booster as claimed in claim 25, comprising:

The first rotor, the first rotor include at least the first blade and the second blade, and

Second rotor, second rotor include at least third blade and quaterfoil,

Wherein, at least two axis flow back to flow port include the first return port and the second return port,

Wherein, when return air is exposed to the sky between second return port and the third blade and the quaterfoil When gap, first return port by first runner sealing, and

Wherein, when the return air is exposed between first return port and first blade and second blade Second gap when, second return port is sealed by the quaterfoil.

27. booster as claimed in claim 25, wherein the booster further includes at least two in pelvic outlet plane Runoff return port, and at least two runoffs return port is also connect by the conduit with the outlet of the intercooler.

28. booster as claimed in claim 15, wherein thermoae limit and 4.4:1 of the booster with 150 degrees Celsius The pressure ratio of outlet pressure and inlet pressure.

29. booster as claimed in claim 25, wherein the rotor with blade includes rotatable the first rotor and can Second rotor of rotation, each of the rotatable the first rotor and rotatable second rotor all include at least three Blade is formed with corresponding gap between each blade, and one flowed back to at least two axis in flow port when gap is right On time, one be orientated to the gap that at least two axis flows back in flow port is provided from the cold of the intercooler But air, and when providing cooling air to the gap, the gap is sealed relative to the entrance and the outlet.

30. a kind of axial entrance, radially outlet formula booster, comprising:

Tubular shell, the tubular shell include:

Entry wall；

Perpendicular to the inlet axis of the entry wall；

Two rotor mounting recess, described two rotor mounting recess are located in the inner surface of the entry wall, the inlet shaft Line is between described two rotor mounting recess；

Rotor with blade, each rotor with blade include the rotation axis parallel with the inlet axis；

At least two return ports in the tubular shell；

Conduit, the conduit connect at least two return port of the booster and the outlet of the intercooler to receive The return air.

31. axial entrance as claimed in claim 30, radially outlet formula booster, wherein the rotor with blade includes The blade sequentially engaged when the rotor rotation with blade along the inlet axis, wherein these blades are along them The length of respective rotor is reversed, and wherein these blades are set the time to make the entrance relative to the outlet fluid Ground sealing.

32. axial entrance as claimed in claim 31, radially outlet formula booster, wherein the rotor with blade includes Rotatable the first rotor and rotatable second rotor, in the rotatable the first rotor and rotatable second rotor Include each at least three adjacent blades, corresponding gap is formed between each adjacent blades, when in corresponding gap One when being aligned with one at least two return port, it is one fixed at least two return port Xiang Weixiang mono- corresponding gap provides the cooling air from the intercooler, and works as and mention to one corresponding gap When for cooling air, one corresponding gap is sealed relative to the entrance and the outlet.

33. axial entrance as claimed in claim 31, radially outlet formula booster,

Wherein, the rotor with blade includes the first rotor and the second rotor, and the first rotor includes at least the first blade With the second blade, second rotor includes at least third blade and quaterfoil,

Wherein, at least two return port includes the first return port and the second return port,

34. the booster as described in any one of claim 30-33, wherein it is described outlet be located at exit wall in, it is described at least Two return ports include the runoff return port in the exit wall, the conduit also by the runoff return port with The outlet of the intercooler connects.

35. the booster as described in any one of claim 30-33, wherein at least two return port includes being located at Axis in the entry wall flows back to flow port, and the conduit also connects the outlet that the axis flows back to flow port and the intercooler It connects.

36. the booster as described in any one of claim 30-33, wherein it is described outlet be located at exit wall in, it is described at least Two return ports include that the runoff return port in the exit wall and the axis in the entry wall flow back to end Mouthful, the runoff return port and the axis are also flowed back to flow port and connect with the outlet of the intercooler by the conduit.