CN108716475A - A kind of energy-efficient centrifugal blower - Google Patents
A kind of energy-efficient centrifugal blower Download PDFInfo
- Publication number
- CN108716475A CN108716475A CN201810526493.0A CN201810526493A CN108716475A CN 108716475 A CN108716475 A CN 108716475A CN 201810526493 A CN201810526493 A CN 201810526493A CN 108716475 A CN108716475 A CN 108716475A
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- China
- Prior art keywords
- air inlet
- impeller
- air
- energy
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5846—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling by injection
-
- 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
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- 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
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Abstract
The invention discloses a kind of energy-efficient centrifugal blowers, including：Motor；Impeller sets are supplied gas body side by side for improving gas pressure；Casing is arranged outside impeller sets for protecting impeller sets, and guiding air-flow is arranged to including air inlet, gas outlet；It is provided with sound arrester at the air inlet of the casing；The sound arrester is connected with filter screen corresponding with air inlet；The front of the air inlet is provided with cyclonic separation current collector, is conducive to improve intake, reduces dust and enters；Cooling duct device corresponding with motor, shaft coupling, bearing housing is connected at the gas outlet, for cooling down motor, shaft coupling, bearing housing, using special inlet structure, air can be filtered well, reduces the dust in conveying air, and it can preferably improve intake efficiency, casing is transformed, the generation for reducing noise is can be very good, is provided with the cooling device to motor, shaft coupling, bearing housing, it is good for the environment, production efficiency can be greatly improved.
Description
Technical field
The present invention relates to a kind of wind turbine more particularly to a kind of energy-efficient centrifugal blowers.
Background technology
Centrifugal blower is the pressure energy and kinetic energy that the mechanical energy rotated using draught fan impeller is converted to gas, and gas is defeated
It sees off, gas is rotated through impeller and generates air energy along the streamlined air inlet air inlet through hollow shaft of wind turbine, along screw type shell by gas
Body radially exports, then is sent out from shell air outlet.The air power noise of wind turbine is mainly by broadband noise and discrete noise group
Then have close ties with broadband noise at, the air dynamic behaviour in spiral case, existing centrifugal fan casing front side board with
Space between front shroud of impeller is larger, easily forms larger vortex, causes fan efficiency relatively low, and noise is larger, Er Qiexian
Some centrifugal blowers are not mostly filtered processing in air inlet, and the easy to carry a large amount of dust of air-flow of conveying is unfavorable for
It uses, is unfavorable for environmental protection, and mostly do not cause these devices usually because cooling the cooling device of motor, shaft coupling etc.
It is not in place, failure is generated, production efficiency is largely effected on.
Invention content
To solve the above problems, a kind of energy-efficient centrifugal blower of present invention offer can using special inlet structure
To be filtered well to air, the dust in conveying air is reduced, and can preferably improve intake efficiency, to casing
It is transformed, can be very good the generation for reducing noise, and be additionally provided with the cooling device to motor, shaft coupling, bearing housing,
It is good for the environment, and production efficiency can be greatly improved.
To achieve the above object, the present invention uses following technological means：
The present invention provides a kind of energy-efficient centrifugal blower, including：Motor is connected by shaft coupling, bearing housing and impeller sets
It connects, for driving impeller sets to rotate；Impeller sets are supplied gas body side by side for improving gas pressure；Casing is arranged outside impeller sets
For protecting impeller sets, guiding air-flow is arranged to including air inlet, gas outlet；Sound-absorbing dress is provided at the air inlet of the casing
It sets；The sound arrester is connected with filter screen corresponding with air inlet；The front of the air inlet is provided with cyclonic separation afflux
Device is conducive to improve intake, reduces dust and enters；It is connected at the gas outlet corresponding with motor, shaft coupling, bearing housing
Cooling duct device, for cooling down motor, shaft coupling, bearing housing.
Further, the sound arrester includes the air inlet oralia being arranged at the air inlet of casing, the air inlet oralia
The one end not connect with the casing is connected with arc plate, is connected with anti-vortex ring on the air inlet oralia and the arc plate, institute
It states and forms closed cavity between anti-vortex ring and air inlet oralia and the arc plate, sound absorber is filled in the cavity
Material, effectively broken large eddies, can be obviously improved air dynamic behaviour in casing, improve fan efficiency, reduce wind turbine and make an uproar
Sound, and by the filling glass cotton inside anti-vortex ring, become a dissipative muffler, consumption acoustic wave energy is absorbed, is further had
Effect reduces fan noise.
Further, the arc plate lower part is clamped with filter screen, is conducive to preferably be filtered air, convenient for more
Change cleaning filter screen.
Further, the anti-vortex ring includes the first face and the second face, is formed between first face and second face
One right angle, first face are welded with the air inlet oralia, and second face is welded with the arc plate, effectively broken large scale
Vortex can be obviously improved air dynamic behaviour in casing, improve fan efficiency, reduce fan noise.
Further, it being uniformly provided with through-hole on first face and second face, the through-hole diameter is not more than 1mm,
Be conducive to preferably reduce fan noise.
Further, the sound-absorbing material uses metallic fiber acoustical cotton, is conducive to preferably absorb consumption acoustic wave energy,
Further effectively reduce fan noise.
Further, the cyclonic separation current collector includes whirlwind impeller, and the whirlwind impeller is by least six impeller blades
It forms, interval setting bottom plate forms air inlet duct between the impeller blade of the whirlwind impeller, and air inlet duct number is no less than three, institute
It states whirlwind impeller front and is connected with the closed rounding mesa-shaped dirt cup in front end, the impeller blade of the whirlwind impeller is along dirt cup upper periphery
Distribution, the dirt cup outer cover are equipped with filter screen two, and the filter screen two, whirlwind impeller are connect with entrance shell, external empty
Gas enters air inlet after being filtered by filter screen two, can be very good to be filtered, then pass through whirlwind impeller passage, Ke Yijin
One step centrifuges depositing dust, multiple air inlet ducts to air, it is ensured that complete machine intake is sufficient, and can rotate air by impeller passage
Center is flowed backward to, air intake efficiency is can effectively improve.
Further, the width of the air inlet duct becomes smaller successively from whirlwind impeller periphery to whirlwind impeller center；It is described into
The height in air duct becomes larger successively from whirlwind impeller periphery to whirlwind impeller center, and wind speed is caused gradually to be accelerated, it is ensured that dust enters
When dirt cup, speed is enough fast.
Further, the air inlet duct includes：First air inlet duct, the second air inlet duct, third air inlet duct, the first air inlet duct,
It is different that second air inlet duct, third air inlet duct correspond to the first air inlet, the second air inlet, the height of third air inlet, and first into
Air port, the second air inlet, third air inlet height settle arrangement from high to low, due to each air duct air inlet open height not
Together so that the intake in each air duct is different；The high to Low sedimentation arrangement of air inlet open height in each air duct so that entire cyclone leaf
The swirling air stream generated is taken turns along dirt cup central shaft and asymmetry, is conducive to the separation of dust.
Further, water cooling box, the air outlet company of cooling duct device one end and casing are provided on the casing
It connects, the other end forms several cooling wind nozzles corresponding with cooling motor, shaft coupling, bearing housing across water cooling box, is conducive to more
Good cools down motor, shaft coupling, bearing housing, improves service life of equipment.
Beneficial effects of the present invention：
The configuration of the present invention is simple can filter air well using special inlet structure, reduce conveying
Dust in air, and intake efficiency can be preferably improved, casing is transformed, the production for reducing noise is can be very good
It is raw, and it is additionally provided with the cooling device to motor, shaft coupling, bearing housing, it is good for the environment, and production effect can be greatly improved
Rate, the effectively broken large eddies of anti-vortex ring of setting, can be obviously improved air dynamic behaviour in casing, improve wind turbine effect
Rate reduces fan noise, and by the filling glass cotton inside anti-vortex ring, becomes a dissipative muffler, absorbs consumption sound wave
Energy, further effectively reduces fan noise, and extraneous air enters air inlet after being filtered by filter screen two, can be very good
It is filtered, then by whirlwind impeller passage, can depositing dust, multiple air inlet ducts further be centrifuged to air, it is ensured that complete machine is entered the wind
Amount is sufficient, and can air be flowed backward to center by impeller passage rotation, can effectively improve air intake efficiency.
Description of the drawings
Fig. 1 is the monnolithic case structural schematic diagram of the present invention；
Fig. 2 is the whirlwind blade wheel structure schematic diagram of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention will be further described.
Embodiment 1：As shown in Figs. 1-2, the present embodiment provides a kind of energy-efficient centrifugal blowers, including：Motor 1, passes through
Shaft coupling 2, bearing housing 3 are connect with impeller sets 4, for driving impeller sets 4 to rotate；Impeller sets 4, for improving gas pressure side by side
It supplies gas body；Casing 5 is arranged outside impeller sets for protecting impeller sets, and guiding air-flow is arranged to including air inlet 5-1, gas outlet
5-2；Sound arrester 6 is provided at the air inlet of the casing 5；The sound arrester is connected with filter screen corresponding with air inlet
7；The front of the air inlet is provided with cyclonic separation current collector 8, is conducive to improve intake, reduces dust and enters；It is described go out
Cooling duct device 9 corresponding with motor, shaft coupling, bearing housing is connected at gas port, for cooling down motor, shaft coupling, bearing
Case.
The sound arrester 6 includes the air inlet oralia 6-1 that is arranged at the air inlet of casing, the air inlet oralia not with institute
The one end for stating casing connection is connected with arc plate 6-2, and anti-vortex ring 6-3, institute are connected on the air inlet oralia and the arc plate
It states and forms closed cavity between anti-vortex ring and air inlet oralia and the arc plate, sound-absorbing material is filled in the cavity
6-4, effectively broken large eddies, can be obviously improved air dynamic behaviour in casing, improve fan efficiency, reduce wind turbine and make an uproar
Sound, and by the filling glass cotton inside anti-vortex ring, become a dissipative muffler, consumption acoustic wave energy is absorbed, is further had
Effect reduces fan noise.
The portions 6-2 are clamped with filter screen 7 under the arc plate, are conducive to preferably be filtered air, are conveniently replaceable clear
Manage filter screen.
The anti-vortex ring 6-3 includes the first face 6-31 and the second face 6-32, shape between first face and second face
At a right angle, first face is welded with the air inlet oralia, and second face is welded with the arc plate, is effectively crushed big ruler
Vortex is spent, air dynamic behaviour in casing can be obviously improved, improves fan efficiency, reduces fan noise.
Through-hole is uniformly provided on the first face 6-31 and the second face 6-32, the through-hole diameter is not more than 1mm, has
Fan noise is reduced conducive to better.
The sound-absorbing material 6-4 uses metallic fiber acoustical cotton, is conducive to preferably absorb consumption acoustic wave energy, further
Effectively reduce fan noise.
The cyclonic separation current collector 7 includes whirlwind impeller 7-1, and the whirlwind impeller is made of at least six impeller blades,
Interval setting bottom plate forms air inlet duct between the impeller blade of the whirlwind impeller, and air inlet duct number is no less than three, the rotation
Fan blade front is connected with the closed rounding mesa-shaped dirt cup 7-2 in front end, and the impeller blade of the whirlwind impeller is along dirt cup upper periphery
Distribution, the dirt cup outer cover are equipped with two 7-3 of filter screen, and the filter screen two, whirlwind impeller are connect with entrance shell, external
Air enters air inlet after being filtered by filter screen two, can be very good to be filtered, then by whirlwind impeller passage, can be with
Depositing dust, multiple air inlet ducts further are centrifuged to air, it is ensured that complete machine intake is sufficient, and can revolve air by impeller passage
Turn to flow backward to center, can effectively improve air intake efficiency.
The width of the air inlet duct becomes smaller successively from whirlwind impeller periphery to whirlwind impeller center；The height of the air inlet duct
Become larger successively from whirlwind impeller periphery to whirlwind impeller center, wind speed is caused gradually to be accelerated, it is ensured that when dust enters dirt cup, speed
It is enough fast.
The air inlet duct includes：First air inlet duct, the second air inlet duct, third air inlet duct, the first air inlet duct, the second air inlet
Corresponding first air inlet 204 of road, third air inlet duct, the second air inlet 203, third air inlet 202, the 4th air inlet 205,
The height of five air inlets 206 is different, and the first air inlet 204, the second air inlet 203, third air inlet 202, the 4th air inlet
205, the height of the 5th air inlet 206 settles arrangement from high to low, since the air inlet open height in each air duct is different so that each
The intake in air duct is different；The high to Low sedimentation arrangement of air inlet open height in each air duct so that the rotation that entire whirlwind impeller generates
Vortex air flow is conducive to the separation of dust along dirt cup central shaft and asymmetry.
It is provided with water cooling box 5-1 on the casing 5, the air outlet of cooling duct device one end and casing connects, separately
One end forms several cooling wind nozzles corresponding with cooling motor, shaft coupling, bearing housing across water cooling box, and it is preferably right to be conducive to
Motor, shaft coupling, bearing housing are cooled down, and service life of equipment is improved.
The implementation steps of the present invention are as follows：
Wind turbine, the rotation of motor impeller group are opened, extraneous air enters air inlet after being filtered by filter screen two, can
To be filtered well, then by whirlwind impeller passage, can depositing dust, multiple air inlet ducts further be centrifuged to air, it is ensured that
Complete machine intake is sufficient, and can air be flowed backward to center by impeller passage rotation, can effectively improve air intake efficiency, it
Air enters casing internal air duct afterwards, and the effectively broken large eddies of anti-vortex ring of air inlet can be obviously improved in casing empty
Aerodynamics characteristic improves fan efficiency, reduces fan noise, and by the filling glass cotton inside anti-vortex ring, become one
Dissipative muffler absorbs consumption acoustic wave energy, further effectively reduces fan noise, and air later is using filter screen into one
Step filtering, is discharged by air outlet, the cooling duct device of air outlet is cooled down by water cooling box, is conducive to well to electricity later
Machine, shaft coupling, bearing housing are cooled down, and service life of equipment is improved.
Claims (10)
1. a kind of energy-efficient centrifugal blower, which is characterized in that including：
Motor is connected by shaft coupling, bearing housing and impeller sets, for driving impeller sets to rotate；
Impeller sets are supplied gas body side by side for improving gas pressure；
Casing is arranged outside impeller sets for protecting impeller sets, and guiding air-flow is arranged to including air inlet, gas outlet；
It is provided with sound arrester at the air inlet of the casing；The sound arrester is connected with filter screen corresponding with air inlet；
The front of the air inlet is provided with cyclonic separation current collector, is conducive to improve intake, reduces dust and enters；
Cooling duct device corresponding with motor, shaft coupling, bearing housing is connected at the gas outlet, for cooling down motor, connection
Axis device, bearing housing.
2. a kind of energy-efficient centrifugal blower according to claim 1, which is characterized in that the sound arrester includes setting
Air inlet oralia at the air inlet of casing, one end that the air inlet oralia is not connect with the casing are connected with arc plate, institute
It states and is connected with anti-vortex ring on air inlet oralia and the arc plate, between the anti-vortex ring and the air inlet oralia and the arc plate
Closed cavity is formed, sound-absorbing material is filled in the cavity.
3. a kind of energy-efficient centrifugal blower according to claim 2, which is characterized in that the arc plate lower part and filtering
Network interface card connects.
4. a kind of energy-efficient centrifugal blower according to claim 2, which is characterized in that the anti-vortex ring includes the first face
With the second face, a right angle is formed between first face and second face, first face is welded with the air inlet oralia, institute
The second face is stated to weld with the arc plate.
5. a kind of energy-efficient centrifugal blower according to claim 4, which is characterized in that first face and described second
Through-hole is uniformly provided on face, the through-hole diameter is not more than 1mm.
6. a kind of energy-efficient centrifugal blower according to claim 2, which is characterized in that the sound-absorbing material uses metal
Fiber acoustical cotton.
7. a kind of energy-efficient centrifugal blower according to claim 1, which is characterized in that the cyclonic separation current collector packet
Whirlwind impeller is included, the whirlwind impeller is made of at least six impeller blades, and setting is spaced between the impeller blade of the whirlwind impeller
Bottom plate forms air inlet duct, and air inlet duct number is no less than three, and whirlwind impeller front is connected with the closed inverted round stage in front end
The impeller blade of shape dirt cup, the whirlwind impeller is distributed along dirt cup upper periphery, and the dirt cup outer cover is equipped with filter screen two, described
Filter screen two, whirlwind impeller are connect with entrance shell.
8. a kind of energy-efficient centrifugal blower according to claim 7, which is characterized in that the width of the air inlet duct is from rotation
Thoughtful cyclone leaf wheel center becomes smaller successively outside fan blade；The height of the air inlet duct is from whirlwind impeller periphery to whirlwind impeller center
Become larger successively.
9. a kind of energy-efficient centrifugal blower according to claim 7, which is characterized in that the air inlet duct includes：First
Air inlet duct, the second air inlet duct, third air inlet duct, the first air inlet duct, the second air inlet duct, third air inlet duct correspond to the first air inlet,
Second air inlet, the height of third air inlet are different, and the height of the first air inlet, the second air inlet, third air inlet is by height
It is arranged to droning drop.
10. a kind of energy-efficient centrifugal blower according to claim 1, which is characterized in that be provided with water on the casing
The air outlet of ice chest, cooling duct device one end and casing connects, and the other end forms several electric with cooling across water cooling box
The corresponding cooling wind nozzle of machine, shaft coupling, bearing housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526493.0A CN108716475A (en) | 2018-05-29 | 2018-05-29 | A kind of energy-efficient centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526493.0A CN108716475A (en) | 2018-05-29 | 2018-05-29 | A kind of energy-efficient centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108716475A true CN108716475A (en) | 2018-10-30 |
Family
ID=63911570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810526493.0A Pending CN108716475A (en) | 2018-05-29 | 2018-05-29 | A kind of energy-efficient centrifugal blower |
Country Status (1)
| Country | Link |
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| CN (1) | CN108716475A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592781A (en) * | 2019-10-15 | 2019-12-20 | 长兴超特纺织有限公司 | Air supply mechanism of air jet loom |
| CN111749907A (en) * | 2020-06-18 | 2020-10-09 | 德耐尔节能科技（上海）股份有限公司 | Permanent magnet synchronous high-speed centrifugal oil-free air blower |
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| CN203051178U (en) * | 2013-01-06 | 2013-07-10 | 上虞市当代风机风冷设备有限公司 | High-voltage low-noise centrifugal fan |
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| CN105351231A (en) * | 2015-12-09 | 2016-02-24 | 南京磁谷科技有限公司 | Air blower cooling structure |
| CN106194801A (en) * | 2016-09-26 | 2016-12-07 | 南京磁谷科技有限公司 | A kind of air-cooled aerator of fan-free reverse-flow type |
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| CN107013494A (en) * | 2017-05-11 | 2017-08-04 | 南通升科节能技术有限公司 | Noise-lowering centrifugal blower fan |
| CN107581973A (en) * | 2017-09-30 | 2018-01-16 | 苏州市春菊电器有限公司 | A kind of cyclone separator, especially a kind of dust catcher with cyclone separator |
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| JP2002064956A (en) * | 2000-08-14 | 2002-02-28 | Ishikawajima Harima Heavy Ind Co Ltd | High speed-revolution motor and cooling method therefor |
| CN203051178U (en) * | 2013-01-06 | 2013-07-10 | 上虞市当代风机风冷设备有限公司 | High-voltage low-noise centrifugal fan |
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| CN107581973A (en) * | 2017-09-30 | 2018-01-16 | 苏州市春菊电器有限公司 | A kind of cyclone separator, especially a kind of dust catcher with cyclone separator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592781A (en) * | 2019-10-15 | 2019-12-20 | 长兴超特纺织有限公司 | Air supply mechanism of air jet loom |
| CN111749907A (en) * | 2020-06-18 | 2020-10-09 | 德耐尔节能科技（上海）股份有限公司 | Permanent magnet synchronous high-speed centrifugal oil-free air blower |
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Application publication date: 20181030 |