CN105570157B - A kind of supercharger systems and low noise control method - Google Patents
A kind of supercharger systems and low noise control method Download PDFInfo
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- CN105570157B CN105570157B CN201511003687.5A CN201511003687A CN105570157B CN 105570157 B CN105570157 B CN 105570157B CN 201511003687 A CN201511003687 A CN 201511003687A CN 105570157 B CN105570157 B CN 105570157B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Supercharger (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to technical field of engines, relate to a kind of supercharger systems and low noise control method, annular gap is provided between the compressor housings of the system and the rotor blade of rotor, compressor inwall is provided with compressor casing body, compressor inwall surrounds air inlet cavity, and air inlet cavity connects with annular gap；The gas channel that the direction along the air-flow in air inlet cavity is set is formed between compressor housings and compressor inwall；Compressor inwall is provided with the executing agency for the outlet for being used for allowing or prevent air-flow from flowing through gas channel.The low noise control method is, widen groove by noise reduction ring and flow changes Middle and low frequency noise, reduces high-frequency noise by executing agency jointly.A kind of supercharger systems and low noise control method provided by the invention, structure improvement is carried out to booster, noise cut-off is carried out from sound wave bang path, all radial flow type boosters is applicable, solves the problems, such as that Middle and low frequency noise and high-frequency noise can not be reduced simultaneously in the prior art.
Description
Technical field
The present invention relates to technical field of engines, more particularly to a kind of supercharger systems and low noise control method, has more
It is related to a kind of supercharger systems and low noise control method that can reduce Middle and low frequency noise and high-frequency noise simultaneously body.
Background technology
Require increasingly strict as charcoal discharges limitation, supercharging technology turns into the inevitable choice of engine technology developments.With
The pressure ratio for booster in recent years gradually rises, and requirement of the people to the comfortableness of engine also begins to improve, and causes booster
Noise problem turn into the problem of current producer and user increasingly pay close attention to.
At present, footpath solve streaming exhaust-driven turbo-charger exhaust-gas turbo charger noise problem, means the most general be using noise reduction ring and/
Or flow widens groove.Wherein, noise reduction ring plays guide functions, can make the more smooth stabilization of air velocity distribution, so as to reduce part
Aerodynamic noise；Flow widens groove in addition to widening the range of flow in low charge flow rate region, coordinates noise reduction ring to use, can also one
Determine the Whoosh noises of low frequency in the weakening of degree.
In the prior art, groove is widened using noise reduction ring, flow and is generally divided into following 3 kinds of schemes：
1st, only with noise reduction loop technique, noise reduction ring is increased on booster air feeder structure, in low charge flow rate, now
Engine is in running on the lower load, often grows very big Whoosh noises；
2nd, only with groove technology is widened, although in low discharge operating mode, surge line is flowed to low discharge direction, reduce asthma
The risk shaken, and Whoosh noises can be also reduced to a certain extent, but in high charge flow rate, now engine is in high load capacity
Operating mode, various high-frequency noises, as TCN noises, BPF noises and Buzz-Saw noises can all be passed out by widening groove.
3 at the same use noise reduction ring and flow Widening Technique, although having widened flow, reduce surge risk, reduce
Whoosh noises, but in high flow capacity operating mode, each high-frequency noise is still very high, such as TCN noises, BPF noises and Buzz-Saw noises
Then it can still be passed out by widening groove from the space at noise reduction ring.
The content of the invention
(1) technical problems to be solved
The technical problem to be solved in the present invention is to provide a kind of supercharger systems and low noise control method, to booster
Structure improvement is carried out, noise cut-off is carried out from sound wave bang path, is applicable all radial flow type boosters, solves prior art
In the problem of can not reducing Middle and low frequency noise and high-frequency noise simultaneously.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of supercharger systems and low noise control method.
A kind of supercharger systems, including compressor housings and rotor, the compressor housings and the rotor leaf of the rotor
Annular gap is provided between piece, compressor inwall is provided with the compressor casing body, the compressor inwall surrounds air inlet cavity,
The air inlet cavity connects with the annular gap；Between the compressor housings and the compressor inwall formed along it is described enter
The gas channel that the direction of air-flow in gas cavity is set, the entrance of the gas channel connect the annular gap, the gas
The air inlet of air inlet cavity described in the outlet of circulation road；The compressor inwall, which is provided with, to be used to allow or prevent the gas
Stream flows through the executing agency of the outlet of the gas channel.
Further, foregoing executing agency is electromagnetic actuator.
Further, aforementioned electromagnetic executing agency includes spring, annular valve body and electromagnet, and the compressor inwall is close
One end of the air inlet of the air inlet cavity is provided with the annular groove being coaxial therewith；The spring is inserted in the annular groove
Bottom, the annular valve body is inserted in the annular groove and is connected with the spring；The inwall of the compressor housings
The upper opening position relative with the annular valve body is provided with some electromagnet.
Further, seal ring seal is passed through between the side wall of aforementioned toroidal valve body and the annular groove.
Further, aforementioned electromagnetic iron energization or power-off controlled by control unit of engine, the engine controls
Unit receives the feedback signal of engine, and controls the electromagnet to be powered or power off according to the feedback signal.
Further, in addition to noise reduction ring, diffuser and volute flow passage, the noise reduction ring are integral with the compressor housings
Connection, and the outside of the air inlet positioned at the air inlet cavity；The diffuser and volute flow passage integrally connect with the compressor
Connect, and the annular gap connects the volute flow passage by diffuser, the volute flow passage connects compressor escape pipe.
Further, groove is widened in the porch of foregoing gas channel provided with flow.
A kind of low noise control method of supercharger systems, comprises the following steps：
S1, air inlet cavity is set in compressor casing, noise reduction ring connected with the air inlet of the air inlet cavity, and leads to
Cross the Middle and low frequency noise when noise reduction ring reduction air-flow enters the air inlet cavity；
S2, the air inlet cavity are made up of compressor inwall, shape between the compressor inwall and the compressor housings
Into gas channel, the entrance of the gas channel widens groove provided with flow, widens the groove reduction air-flow by the flow and enters
Enter the Middle and low frequency noise during gas channel；
S3, the compressor inwall are provided with executing agency, and when engine low load operating mode, the executing agency allows
The air-flow flows through from the outlet of the gas channel, reduces the Middle and low frequency noise in the exit of the gas channel；Work as hair
During motivation high load capacity operating mode, the executing agency prevents the biography that flows through and separate sound wave of the air-flow from the outlet of gas channel
Pass, reduce the high-frequency noise in the exit of the gas channel.
Further, in abovementioned steps S3, the executing agency is electromagnetic actuator, passes through the electromagnetic actuator
Electromagnet and annular valve body between cooperation, change the opening and closing of the outlet of the gas channel.
Further, control unit of engine control is crossed by aforementioned electromagnetic Tie Tong, and the control unit of engine, which receives, to be started
The feedback signal of machine, and control the electromagnet to be powered or power off according to the feedback signal.
(3) beneficial effect
The above-mentioned technical proposal of the present invention has the advantages that：
A kind of supercharger systems provided by the invention, the entrance connection annular gap of its gas channel, gas channel go out
The air inlet of mouth connection air inlet cavity；Compressor inwall is provided with the outlet for being used to allow or prevent air-flow from flowing through gas channel
Executing agency, in engine low load operating mode, the outlet of gas channel is opened, in high engine load operating mode, close gas
The outlet of circulation road, so as to play a part of changing airflow direction, and then reduce Middle and low frequency noise and high-frequency noise.
A kind of supercharger systems provided by the invention, it is simple in construction, easy to implement, reliable and stable, and cost is cheap, fits
With all radial flow type boosters, and booster Noise measarement can be made horizontal to acceptable.
A kind of low noise control method of supercharger systems provided by the invention, it is common that groove is widened by noise reduction ring and flow
Change Middle and low frequency noise, improve pressure flow field characteristic by changing some pipeline sections to improve the passive acoustic characteristic of booster,
So as to reduce the method for high-frequency noise.The cost of method provided by the invention is low, simple to operate and easy to implement.
Brief description of the drawings
Fig. 1 is the cut-away view of supercharger systems of the present invention；
Fig. 2 is the current control figure of supercharger systems of the present invention.
Wherein, 1：Air current flow direction；2：Compressor housings；3：Volute flow passage；4：Diffuser；5：Rotor blade；6：Stream
Amount widens groove；7：Compressor escape pipe；8：Spring；9：Sealing ring；10：Annular valve body；11：Electromagnet；12：Noise reduction ring；13：Enter
Gas cavity；14：Compressor inwall；15：Gas channel；16：Rotating shaft.
Embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following examples are used for
Illustrate the present invention, but can not be used for limiting the scope of the present invention.
In the description of the invention, it is necessary to explanation, unless otherwise indicated, " multiple " be meant that two or two with
On；The orientation of the instruction such as term " on ", " under ", "left", "right", " interior ", " outer ", " front end ", " rear end ", " head ", " afterbody "
Or position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies description, and
It is not instruction or implies signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary.It is right
For one of ordinary skill in the art, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment one
As shown in figure 1, a kind of supercharger systems that the present embodiment provides, including compressor housings 2 and rotor, rotor pass through
Rotating shaft 16 is fixed in compressor housings 2, and annular gap, compressor are provided between the rotor blade 5 of compressor housings 2 and rotor
Compressor inwall 14 is provided with housing 2, compressor inwall 14 surrounds air inlet cavity 13, and air inlet cavity 13 connects with annular gap；
The gas channel 15 that the direction along the air-flow in air inlet cavity 13 is set is formed between compressor housings 2 and compressor inwall 14,
The entrance connection annular gap of gas channel 15, the air inlet of the outlet air inlet cavity 13 of gas channel 15；In compressor
Wall 14 is provided with the executing agency for the outlet for being used for allowing or prevent air-flow from flowing through gas channel 15, and by changing air-flow stream
To so as to reduce high-frequency noise.
Executing agency is electromagnetic actuator.In the present embodiment, electromagnetic actuator includes spring 8, the and of annular valve body 10
Electromagnet 11, compressor inwall 14 are provided with the annular groove being coaxial therewith close to one end of the air inlet of air inlet cavity 13；Bullet
Spring 8 is inserted in the bottom of annular groove, and annular valve body 10 is inserted in annular groove and is connected with spring 8；Compressor housings 2
The opening position relative with annular valve body 10 is provided with some electromagnet 11 on inwall, and electromagnet 11 can be one block of ring electromagnet
11, or polylith electromagnet 11.In the present embodiment, the quantity of electromagnet 11 is multiple, and each electromagnet 11 is along compressor casing
The circumference of body 2 is uniformly distributed.When electromagnet 11 has magnetic, the adhesive annular valve body 10 of electromagnet 11, make gas channel 15
Port closing；When electromagnet 11 does not have magnetic, the elastic force of spring 8 makes annular valve body 10 keep separating shape with electromagnet 11
State, make the port opening of gas channel 15.Wherein, electromagnet 11 energization or power-off (have magnetic force or without magnetic force) it is logical
Control unit of engine control is crossed, control unit of engine receives the feedback signal of engine, when its feedback is underload work
Condition signal, control unit of engine control electromagnet 11 power off；When its feedback is high load capacity working condition signal, engine control is single
Member control electromagnet 11, it is powered.
In addition, for controlling the executing agency of gas flow to be not limited to the knot in electromagnetic actuator or the present embodiment
Configuration formula, as long as heretofore described any structure shape with control gas flow and sound wave cut-off control function can be reached
Formula, belong to the technology of the present invention.
Sealed between annular valve body 10 and the side wall of annular groove by sealing ring 9, in the present embodiment, the number of sealing ring 9
Measure as four, be respectively arranged between annular valve body 10 and two side walls of annular groove, annular valve body 10 and annular groove
Two sealing rings 9 are set respectively between each side wall, improve sealing effectiveness.
Supercharger systems also include noise reduction ring 12, diffuser 4 and volute flow passage 3, noise reduction ring 12 and the one of compressor housings 2
Connection, and the outside of the air inlet positioned at air inlet cavity 13, reduce middle low frequency when gas flows into the air inlet of air inlet cavity 13
Noise；Diffuser 4 and volute flow passage 3 and compressor integrally connected, and annular gap connects volute flow passage 3, whirlpool by diffuser 4
Shell runner 3 connects compressor escape pipe 7.In addition, groove 6 is widened in the porch of the gas channel 15 of the present embodiment provided with flow, drop
Low-flow enters Middle and low frequency noise during gas channel 15.
The principle of the present invention is that air flows through noise reduction ring 12 by the air current flow direction 1 shown in Fig. 1, in rotor blade 5
Turning effort under diffuser 4 entered by annular gap, then by compressor volute flow passage 3, finally from compressor escape pipe 7
Flow to motor intake manifold；Spring 8, annular valve body 10, electromagnet 11 and sealing ring 9 have collectively constituted supercharger air compressor end
Electromagnetic actuator, play control air flow direction and sound wave cut-off function.When engine is in running on the lower load, gas
Flow broadening groove is flowed through, the air inlet of air inlet cavity 13 is then again flowed through with the flow direction shown in dotted line；Now, electromagnet 11 is not
It is powered, annular valve body 10 is in released state in the presence of spring 8, with electromagnet 11, can reduce Middle and low frequency noise；Starting
When machine is in running on the lower load, electromagnet 11 is powered, and annular valve body 10 and electromagnet 11 are to be in attracting state, can reduce high frequency
Noise.
The connection of control unit of engine and the electromagnet 11, engine of the present invention is as shown in Fig. 2 it is specifically controlled patrols
Volume it is that control unit of engine receives the feedback signal from engine, and according to (or the circulation of engine rotational speed signal and moment of torsion
Fuel delivery) signal judges which kind of operating mode engine is in, so that whether electromagnet 11 is powered, and electromagnetic actuator is performed phase
It should act, so as to play the effect for reducing noise.
Embodiment two
A kind of low noise control method for supercharger systems that the present embodiment provides, comprises the following steps：
S1, air inlet cavity 13 is set in compressor casing, noise reduction ring 12 is connected with the air inlet of air inlet cavity 13, and
Middle and low frequency noise when air-flow enters air inlet cavity 13 is reduced by noise reduction ring 12；
S2, air inlet cavity 13 are made up of compressor inwall 14, and air-flow is formed between compressor inwall 14 and compressor housings 2
Passage 15, the entrance of gas channel 15 widen groove 6 provided with flow, and widening the reduction air-flow of groove 6 by flow enters gas channel 15
When Middle and low frequency noise；Wherein, flow, which widens groove 6 and plays a part of flow, widens, when compressor small flow high pressure is than operating mode,
Farther away from surge line, so as to play a part of low frequency pneumatic noise in reducing.
S3, compressor inwall 14 are provided with executing agency, when engine low load operating mode, executing agency allow air-flow from
The transmission flowed through and separate sound wave of the outlet of gas channel 15, reduce the Middle and low frequency noise in the exit of gas channel 15；When
During high engine load operating mode, executing agency prevents air-flow flowing through from the outlet of gas channel 15, reduces gas channel 15
The high-frequency noise in exit.
In step S3, executing agency is electromagnetic actuator, passes through the electromagnet 11 and annular valve body of electromagnetic actuator
Cooperation between 10, change the opening and closing of the outlet of gas channel 15.Electromagnet 11 is controlled by control unit of engine,
Control unit of engine receives the feedback signal of engine, and controls electromagnet 11 to be powered or power off according to feedback signal.
In the present embodiment, spring 8, annular valve body 10, electromagnet 11 and sealing ring 9 collectively constitute electromagnetic actuator, and
Complete the suppression to the noise such as low frequency Whoosh noises and high frequency BPF in booster.When diesel engine runs running on the lower load
When, feedback signal (diesel engine output torque or distributive value) is received from control unit of engine and sends instruction to electromagnet 11,
Electromagnet 11 is set to be in off-position, electromagnet 11 is in released state, air-flow under the pulling force effect of spring 8 with annular valve body 10
Flowed according to the dotted line direction in Fig. 1, gas pressure field is more stable under such a state, there is flowing in and out for fluid, will not
Grow extraordinary noise energy, now Whoosh noise energies die down.When diesel engine runs high load capacity operating mode, if electromagnetism
The body of iron 11 under the pulling force effect of spring 8 still in released state, the flow direction of gas will with during running on the lower load conversely, because stream
Quantitative change is big, causes that the unstability in flow field becomes strong, pressure oscillation becomes strong, the passive acoustic characteristic of booster is deteriorated.When
When supercharger speed is reached to a certain degree, TCN noises, BPF noises and Buzz-Saw noises can widen groove 6 by flow, then pass through
Propagated from by the outlet of gas channel 15, due to the pressure near blade outlet side and flow velocity highest, enable this partial noise
It is very big to measure proportion, causes to be difficult to have weakening high-frequency noise.Therefore, in the present embodiment, when diesel engine runs high load capacity operating mode
When, feedback signal (diesel engine output torque or distributive value) is received from control unit of engine and sends instruction to electromagnet 11,
Electromagnet 11 is powered, electromagnet 11 and annular valve body 10 are in attracting state, by various high frequency noise components bang paths every
It is disconnected.Seen by contrast test test, in the high speed conditions of booster, the state score of the adhesive of electromagnet 11 from state, BPF noises
7dBA can be reduced by about, noise reduction is obvious.
Therefore, supercharger systems provided by the invention and low noise control method, it both can guarantee that the wide flow of booster was special
Property, and while the Whoosh noises of low energy magnitude can be reduced, the high-frequency noises such as BPF are reduced again.
Embodiments of the invention provide for the sake of example and description, and are not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are it will be apparent that such as the ordinary skill in the art
The executing agency that the gas flowing harmony ripple cut-off in the exit of gas channel will be controlled equally is that can be transplanted to gas channel
Entrance (i.e. flow is widened at groove), or can replace electronic control mechanism etc. with full mechanical actuating mechanism completely.Selection
It is to more preferably illustrate the principle and practical application of the present invention, and enable one of ordinary skill in the art with description embodiment
It is enough to understand the present invention so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (8)
- A kind of 1. supercharger systems, it is characterised in that including compressor housings and rotor, the compressor housings and the rotor Rotor blade between be provided with annular gap, is provided with compressor inwall in the compressor casing body, the compressor inwall surrounds Air inlet cavity, the air inlet cavity connect with the annular gap；Shape between the compressor housings and the compressor inwall Into the gas channel set along the direction of the air-flow in the air inlet cavity, between the entrance connection annular of the gas channel Gap, the air inlet of air inlet cavity described in the outlet of the gas channel；The compressor inwall be provided with for allow or The air-flow is prevented to flow through the executing agency of the outlet of the gas channel；The executing agency is electromagnetic actuator；The electromagnetic actuator includes spring, annular valve body and electromagnet, and the compressor inwall is close to the air inlet cavity One end of air inlet be provided with the annular groove that is coaxial therewith；The spring is inserted in the bottom of the annular groove, described Annular valve body is inserted in the annular groove and is connected with the spring；On the inwall of the compressor housings with the annular The relative opening position of valve body is provided with some electromagnet.
- 2. supercharger systems according to claim 1, it is characterised in that the side of the annular valve body and the annular groove Pass through seal ring seal between wall.
- 3. supercharger systems according to claim 1, it is characterised in that the energization or power-off of the electromagnet are by starting Machine control unit controls, and the control unit of engine receives the feedback signal of engine, and is controlled according to the feedback signal The electromagnet is powered or power-off.
- 4. supercharger systems according to claim 1, it is characterised in that also including noise reduction ring, diffuser and volute flow passage, The noise reduction ring and the compressor housings integrally connected, and the outside of the air inlet positioned at the air inlet cavity；The diffusion Device and volute flow passage and the compressor integrally connected, and the annular gap connects the volute flow passage, institute by diffuser State volute flow passage connection compressor escape pipe.
- 5. supercharger systems according to claim 4, it is characterised in that opened up provided with flow the porch of the gas channel Sipes.
- 6. the low noise control method of a kind of supercharger systems, it is characterised in that comprise the following steps：S1, air inlet cavity is set in compressor casing, noise reduction ring connected with the air inlet of the air inlet cavity, and pass through institute State Middle and low frequency noise when noise reduction ring reduction air-flow enters the air inlet cavity；S2, the air inlet cavity are made up of compressor inwall, and gas is formed between the compressor inwall and the compressor housings Circulation road, the entrance of the gas channel widen groove provided with flow, and widening the groove reduction air-flow by the flow enters institute State Middle and low frequency noise during gas channel；S3, the compressor inwall are provided with executing agency, when engine low load operating mode, described in executing agency's permission Air-flow flows through from the outlet of the gas channel, reduces the Middle and low frequency noise in the exit of the gas channel；Work as engine During high load capacity operating mode, the executing agency prevents the transmission flowing through and separate sound wave of the air-flow from the outlet of gas channel, Reduce the high-frequency noise in the exit of the gas channel.
- 7. the low noise control method of supercharger systems according to claim 6, it is characterised in that in the step S3, The executing agency is electromagnetic actuator, by the cooperation between the electromagnet and annular valve body of the electromagnetic actuator, Change the opening and closing of the outlet of the gas channel.
- 8. the low noise control method of supercharger systems according to claim 7, it is characterised in that the electromagnet passes through Control unit of engine controls, and the control unit of engine receives the feedback signal of engine, and according to the feedback signal The electromagnet is controlled to be powered or power off.
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| CN201511003687.5A CN105570157B (en) | 2015-12-28 | 2015-12-28 | A kind of supercharger systems and low noise control method |
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| CN201511003687.5A CN105570157B (en) | 2015-12-28 | 2015-12-28 | A kind of supercharger systems and low noise control method |
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| TWI671470B (en) * | 2018-05-04 | 2019-09-11 | 奇鋐科技股份有限公司 | Fan noise reduction structure |
| CN108412816B (en) * | 2018-05-10 | 2021-06-18 | 奇鋐科技股份有限公司 | Noise reduction structure of fan |
| US11326624B2 (en) | 2018-05-15 | 2022-05-10 | Asia Vital Components Co., Ltd. | Fan noise-lowering structure |
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| CN115324942B (en) * | 2022-08-15 | 2023-05-30 | 哈尔滨工程大学 | Inlet air bypass recirculation structure with narrowband peak value noise elimination effect |
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| JP2003106293A (en) * | 2001-09-28 | 2003-04-09 | Mitsubishi Heavy Ind Ltd | Fluid machinery |
| JP2009209858A (en) * | 2008-03-05 | 2009-09-17 | Ihi Corp | Centrifugal compressor |
| DE102013020656A1 (en) * | 2013-12-12 | 2014-07-31 | Daimler Ag | Radial compressor for radial-flow turbine of internal combustion engine for e.g. passenger car, has locking element moved between recirculation channel and open position and releasing open position relative to walls of housing |
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| CN105570157A (en) | 2016-05-11 |
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