CN107605765A - Centrifugal blower - Google Patents
Centrifugal blower Download PDFInfo
- Publication number
- CN107605765A CN107605765A CN201710996681.5A CN201710996681A CN107605765A CN 107605765 A CN107605765 A CN 107605765A CN 201710996681 A CN201710996681 A CN 201710996681A CN 107605765 A CN107605765 A CN 107605765A
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- China
- Prior art keywords
- fan
- bearing block
- motor
- bearing
- impeller
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- 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.)
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Abstract
The invention discloses a kind of centrifugal blower, including：By motor-driven fan and impeller, motor includes the main shaft being arranged in motor casing, and the first end and fan of main shaft are direct-connected, and the second end of main shaft and impeller are direct-connected, and the both ends axle journal of main shaft is separately installed with air-bearing.The centrifugal blower of the present invention, motor direct-drive fan and impeller, eliminate traditional gear up transmission mechanism, whole centrifugal fan structure is compact, and small volume, energy loss is low, and noise is low；The both ends axle journal of main shaft installs air-bearing respectively, uses air as lubricant and cooling agent, without extra lubricating oil system, the cleanliness without any pollution needs for being clean gas without oiliness, meeting the special industries such as food, medicine, electronics of output；Produced between live spindle and static air-bearing without Mechanical Contact, no abrasion, energy-efficient, noise is low, reliable, for a long time without maintenance, service life of fan length.
Description
Technical field
The present invention relates to blower fan technical field, and in particular to a kind of centrifugal blower.
Background technology
Centrifugal blower is to improve gas pressure by the mechanical energy of input and convey the machinery of gas, and centrifugal blower is used extensively
In the ventilation, dust discharge and cooling of factory, mine, tunnel, cooling tower, vehicle, ship and building；Boiler and industrial furnace it is logical
Wind and air inducing；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；The drying of cereal and select and recommend；Worked
Cheng Zhong, compressor impeller is driven by common electric machine, air-flow, axially into blade space, is acted on by blower fan in the impeller of high speed rotation
Further aspect is rotated with impeller, and energy is on the other hand improved in the presence of inertia, impeller is left along radial direction, by caused
Centrifugal force does work.
Traditional centrifugal blower be by gear accelerate in a manner of use, such as Authorization Notice No. be CN202007882U,
The Chinese utility model patent of entitled overdrive gear box for centrifugal fan, it needs gear up transmission mechanism, conventional bearing
Support and oil lubrication system, the problem of this conventional centrifugal blower fan is present be：On the one hand, due to using lubricating oil to mechanical friction
Pair is lubricated, and causes the air that blower fan exports to carry oiliness, it is impossible to meet the cleaning of the special industries such as food, medicine, electronics
Pollution-free needs；On the other hand, because the power of common electric machine output needs to pass to impeller by gear up transmission mechanism,
In power transmission process, the problems such as producing great energy loss and noise because of mechanical friction, and step-up gear
Setting causes that a whole set of Fan Equipment volume is big, and space-consuming is big.
The content of the invention
In view of this, the technical problems to be solved by the invention are：A kind of new-type centrifugal blower is provided, the centrifugal blower is defeated
The air gone out clean cleaning, meets cleanliness without any pollution needs of the special industry to blower fan delivery air without oiliness；And energy
Low, compact-sized, small volume is lost.
In order to solve the above technical problems, the technical scheme is that：Centrifugal blower, including：Motor and by the motor
The fan and impeller of driving, the impeller are arranged in compressor casing, and the motor includes motor casing and is arranged at the motor
Main shaft in shell, the first end of the main shaft and the fan are direct-connected, and the second end of the main shaft and the impeller are direct-connected, described
The both ends axle journal of main shaft is separately installed with air-bearing, and the air-bearing is installed in bearing block.
The centrifugal blower of the present invention, because main shaft first end and the fan of motor are direct-connected, the second end and impeller are direct-connected, motor
Fan and impeller are directly driven, eliminates traditional gear up transmission mechanism, whole centrifugal fan structure is compact, small volume,
There is no extra energy loss, energy loss is low, and noise is low.Because the both ends axle journal of main shaft is separately installed with air-bearing, fortune
During turning, lubricant and cooling agent are used air as, without extra lubricating oil system, thus what is exported is without oiliness
Clean gas, meet the cleanliness without any pollution needs of the special industries such as food, medicine, electronics；Because of the main shaft and static state of rotation
There is no Mechanical Contact between air-bearing, do not wear generation, thus it is energy-efficient, and noise is low, reliable, for a long time without dimension
Repair maintenance, service life length.
It is the multinomial further optimization design to the centrifugal blower of the present invention below：
Wherein, it is provided with blast pipe on the motor casing.Due to being provided with blast pipe, can by the air of motor chamber and
When discharge, beneficial to radiating.
Wherein, the bearing block positioned at the main shaft first end is located at the motor for bearing block A, the bearing block A
Be fixedly connected between shell and the fan guard of the fan and respectively with the motor casing, the fan guard, the bearing block A with
The fan guard crosses the fan chamber for accommodating the fan, and the fan chamber is communicated with the bearing block A with accommodating
The gas passage of the motor chamber of the motor.Due to being provided with gas passage on bearing block A, by gas passage, make fan
Air in chamber enters motor chamber, and motor component is effectively radiated, and is supplied to the air-bearing close to impeller end.
Wherein, the bearing block A is provided with gas port, and the gas port is by between the air-bearing and the axle journal
Gap and the fan chamber.
Wherein, it is provided with tooth form sealing structure between the outer face of the bearing block A and the back side of the fan.
Wherein, the bearing block positioned at the end of main shaft second is bearing block B, the bearing block B and the motor casing
It is fixedly connected, the side of the bearing block B is provided with the air-bearing, and the opposite side of the bearing block B is provided with thrust shaft
Hold.Due to being provided with thrust bearing, the axial gap of impeller can be effectively controlled.
Wherein, the thrust bearing includes blowout patche and seat ring, and the blowout patche is fixedly installed in the impeller axle of the impeller,
The outer face of the bearing block B is provided with the annular groove for being used for accommodating the blowout patche, and the seat ring is fixedly installed in the bearing
Seat B outer face.
Wherein, the outer peripheral face of the seat ring is provided with seal groove, and sealing ring is provided with the seal groove；The outer end of the seat ring
Face is fixed with seal cover board, and tooth form sealing structure is provided between the seal cover board and the wheel back of the body of the impeller.Sealing ring with
Tooth form sealing structure forms dual-seal, makes the high pressure of the interior air and impeller end as lubricant and cooling agent of motor chamber empty
Gas is completely isolated, and the pressure-air for avoiding compressor impeller end when running at high speed is got rid of stepper motor chamber, improves centrifugation wind
The efficiency of machine.
Wherein, the motor is permanent magnetic asyn high-speed electric machine.Compared to common electric machine, permanent magnetic asyn high-speed electric machine, which has, to be turned
Fast height, torque stabilization, small volume, it is in light weight the features such as, of the invention to use the direct-connected fan of permanent magnetic asyn high-speed electric machine and impeller, province
Conventional gears speed booster driving mechanism is removed, makes that whole centrifugal fan structure is compact, and small volume, energy loss is small, noise is low.
Wherein, it is bushing to be installed with compressor casing for the air inlet of the compressor casing.The bushing setting of compressor casing,
The use range and performance of centrifugal blower can be expanded.
In summary, centrifugal blower of the invention, compact-sized, small volume, energy loss is small, and noise is low；The sky of output
Gas cleanliness without any pollution, meets cleanliness without any pollution needs of the special industry to blower fan delivery air without oiliness.
Brief description of the drawings
Fig. 1 is the centrifugal fan structure schematic cross-sectional view of the embodiment of the present invention；
In figure：1- fan shafts；2- fan guards；3- fans；4- bearing blocks A；41- gas passages；42- gas ports；5- main shafts；
6- motors；7- motor casings；8- blast pipes；9- bearing blocks B；10- seat rings；101- sealing rings；11- seal cover boards；12- compressors
Shell；13- impellers；14- blowout patches；15- spacer sleeves；16- compressor casings are bushing；17- air-bearings；18- impeller axles.
Embodiment
The present invention is further non-limitingly described in detail with reference to the accompanying drawings and examples.
For ease of description, end face of the parts away from the alignment of shafts is defined as outer face, close to the alignment of shafts herein
End face be defined as inner face；Term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint phase
To importance；In Fig. 1, straight arrows represent to represent air flow by conveying gas flow, curve arrow.
As shown in figure 1, the centrifugal blower of the embodiment of the present invention includes：Motor 6 and the fan 3 and impeller driven by motor 6
13, impeller 13 is arranged in compressor casing 12, fan guard 2 is provided with outside fan 3, motor 6 is preferably using permanent magnet synchronous high-speed electricity
Machine, motor 6 include motor casing 7 and the main shaft 5 being arranged in motor casing 7, and the first end and fan 3 of main shaft 5 are direct-connected, main shaft 5
Second end and impeller 13 are direct-connected, and preferably connected mode is, the fan shaft 1 of fan 3 is threadedly coupled with the first end of main shaft 5, impeller
13 impeller axle 18 is threadedly coupled with the second end of main shaft 5；Air-bearing 17 is installed respectively at the both ends axle journal of main shaft 5,
Air-bearing 17 is installed in the bearing mounting hole of bearing block.
Wherein, the blast pipe 8 being connected with motor chamber is provided with motor casing 7.Blast pipe 8 is set, can be by electricity
The air of machine cavity room is discharged in time, is advantageous to the timely radiating of parts in motor chamber.
Wherein, bearing block A4 will be defined as positioned at the bearing block of the first end of main shaft 5, bearing block A4 is located at motor casing 7 and wind
Fan 3 fan guard 2 between and be fixedly connected respectively with motor casing 7, fan guard 3 by the firm part of screw thread, by bearing block A4 with
Fan guard 2 crosses the fan chamber for accommodating fan 3, and fan chamber is communicated with bearing block A4 with accommodating the motor cavity of motor 6
The gas passage 41 of room.By gas passage 41, the air in fan chamber room enters motor chamber, to parts in motor chamber
Effectively radiated, and be supplied to the air-bearing 17 close to impeller end.
Wherein, bearing block A4 is provided with gas port 42, and gas port 42 is by the gap between air-bearing 17 and axle journal and wind
Fan chamber.
Wherein, tooth form sealing structure is provided between bearing block A4 outer face and the back side of fan 3, it is specifically, described
Tooth form sealing structure includes being arranged at the sealing tooth of bearing block A4 outer faces and matched is arranged at the close of the back side of fan 3
Seal tooth.
Wherein, the bearing block positioned at the end of main shaft 5 second is defined as bearing block B9, bearing block B9 fixes with motor casing 7 to be connected
Connect, air-bearing 17 is installed in the bearing mounting hole of bearing block B9 sides, bearing block B9 opposite side is provided with thrust shaft
Hold.
Wherein, thrust bearing includes blowout patche 14 and seat ring 10, and blowout patche 14 is fixedly installed in the impeller axle 18 of impeller 13,
Bearing block B9 outer face is provided with the annular groove for being used for accommodating blowout patche 14, and seat ring 10 is fixedly installed in axle by threaded fastener
Bearing B9 outer face, spacer sleeve 15 is provided between blowout patche 14 and impeller 13.Due to being provided with thrust bearing, can effectively control
The axial gap of impeller 13 processed.
Wherein, seal groove is provided with the outer peripheral face of seat ring 10, sealing ring 101 is provided with seal groove；In the outer of seat ring 10
End face is fixed with seal cover board 11 by threaded fastener, and it is close to be provided with tooth form between the wheel of seal cover board 11 and impeller 13 back of the body
Seal structure, specifically, the tooth form sealing structure include being arranged at the sealing tooth of the outer face of seal cover board 11 and matched
Be arranged at impeller 13 wheel the back of the body sealing tooth.Sealing ring forms dual-seal with tooth form sealing structure, makes conduct in motor chamber
Lubricant and the air of cooling agent and the pressure-air of impeller end is fully effective isolates, avoid compressor impeller when running at high speed
The pressure-air at end is got rid of stepper motor chamber, improves the efficiency of centrifugal blower.
Wherein, compressor casing bushing 16, bushing 16 tool of compressor casing are installed with the air inlet of compressor casing 12
Body is formed by aluminium alloy casting.The bushing setting of compressor casing, the use range and performance of centrifugal blower can be expanded.
After the centrifugal blower of the present invention starts, permanent magnetic asyn high-speed electric machine 6 is directly driven fan 3 by main shaft 5 and calmed the anger
The impeller 13 of machine rotates at a high speed, and as shown in curve arrow in Fig. 1, the air that is sucked by fan 3, portion of air is through gas port
42 gaps entered between air-bearing 17 and the axle journal of main shaft 5, form support and lubrication air film, main shaft 5 and air-bearing 17
Relative motion, to form fluid dynamic field, in the air-bearing 17 this fluid dynamic formed it is floating raises power, this is floating, which to raise power, makes main shaft 5
Reach the purpose of revolution freely in suspended state, another part air enters motor chamber through gas passage 41, to motor
Part is effectively radiated, and forms the cooling system of uniqueness, and is supplied to the air-bearing 17 close to impeller end.As straight in Fig. 1
Shown in line arrow, entered by conveying gas by compressor casing bushing 16 in compressor casing 12, acted in the impeller 13 of high speed rotation
Under, after pressure and the energy raising of gas, impeller is left along radial direction, acting is discharged from the gas outlet of compressor casing 12.
It is described above to be only the citing of better embodiment of the present invention, wherein the part do not addressed in detail is that this area is general
The common knowledge of logical technical staff.Protection scope of the present invention is defined by the content of claim, any skill based on the present invention
The equivalent transformation that art is enlightened and carried out, also within protection scope of the present invention.
Claims (10)
1. centrifugal blower, including：Motor and compressor casing is arranged at by the motor-driven fan and impeller, the impeller
Interior, the motor includes motor casing and the main shaft that is arranged in the motor casing, it is characterised in that the first end of the main shaft with
The fan is direct-connected, and the second end of the main shaft and the impeller are direct-connected, and the both ends axle journal of the main shaft is separately installed with air supporting
Bearing, the air-bearing are installed in bearing block.
2. centrifugal blower as claimed in claim 1, it is characterised in that be provided with blast pipe on the motor casing.
3. centrifugal blower as claimed in claim 1, it is characterised in that the bearing block positioned at the main shaft first end is axle
Bearing A, the bearing block A between the motor casing and the fan guard of the fan and respectively with the motor casing, institute
State fan guard to be fixedly connected, the bearing block A crosses the fan chamber for accommodating the fan, the bearing block with the fan guard
The gas passage of motor chamber of the fan chamber with accommodating the motor is communicated with A.
4. centrifugal blower as claimed in claim 3, it is characterised in that the bearing block A is provided with gas port, the gas port
By the gap between the air-bearing and the axle journal and the fan chamber.
5. centrifugal blower as claimed in claim 3, it is characterised in that the outer face of the bearing block A and the back of the body of the fan
Tooth form sealing structure is provided between face.
6. the centrifugal blower as described in any one of claim 1 to 5, it is characterised in that positioned at described in the end of main shaft second
Bearing block is bearing block B, and the bearing block B is fixedly connected with the motor casing, and the side of the bearing block B is provided with the gas
Floating axle is held, and the opposite side of the bearing block B is provided with thrust bearing.
7. centrifugal blower as claimed in claim 6, it is characterised in that the thrust bearing includes blowout patche and seat ring, the axle
Circle is fixedly installed in the impeller axle of the impeller, and the outer face of the bearing block B is provided with the annular for being used for accommodating the blowout patche
Groove, the seat ring are fixedly installed in the outer face of the bearing block B.
8. centrifugal blower as claimed in claim 7, it is characterised in that the outer peripheral face of the seat ring is provided with seal groove, described close
Sealing ring is provided with sealing groove；The outer face of the seat ring is fixed with seal cover board, and the wheel of the seal cover board and the impeller is carried on the back
Between be provided with tooth form sealing structure.
9. centrifugal blower as claimed in claim 1, it is characterised in that the motor is permanent magnetic asyn high-speed electric machine.
10. centrifugal blower as claimed in claim 1, it is characterised in that the air inlet of the compressor casing is installed with
Compressor casing is bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710996681.5A CN107605765A (en) | 2017-10-19 | 2017-10-19 | Centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710996681.5A CN107605765A (en) | 2017-10-19 | 2017-10-19 | Centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107605765A true CN107605765A (en) | 2018-01-19 |
Family
ID=61079457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710996681.5A Pending CN107605765A (en) | 2017-10-19 | 2017-10-19 | Centrifugal blower |
Country Status (1)
| Country | Link |
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| CN (1) | CN107605765A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111714914A (en) * | 2020-07-07 | 2020-09-29 | 山东禹王生态食业有限公司 | Flash tank for preventing material from leaking |
| CN113931705A (en) * | 2021-11-02 | 2022-01-14 | 上海发电设备成套设计研究院有限责任公司 | Turbine rotor device and operation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009090348A1 (en) * | 2007-10-25 | 2009-07-23 | Airtechnolgies | Gas compression apparatus |
| KR20120065537A (en) * | 2010-12-13 | 2012-06-21 | 주식회사 뉴로스 | Device for preventing the failure of air bearing in turbo blower |
| US20120207585A1 (en) * | 2011-02-07 | 2012-08-16 | Robert Anderson | Centrifugal Compressor |
| CN104121225A (en) * | 2014-08-06 | 2014-10-29 | 南京磁谷科技有限公司 | Centrifugal blower with rotor axial force control device |
| CN104179712A (en) * | 2014-08-20 | 2014-12-03 | 石家庄金士顿轴承科技有限公司 | Air suspension centrifugal blower |
| DE102015007379A1 (en) * | 2015-06-10 | 2016-01-21 | Daimler Ag | Turbomachine for an energy converter, in particular a fuel cell |
| CN205714830U (en) * | 2016-06-28 | 2016-11-23 | 杭州万辰机电科技有限公司 | Centrifugal compressor |
| CN106968972A (en) * | 2017-03-31 | 2017-07-21 | 哈尔滨庆功林气悬浮鼓风机有限公司 | A kind of gas suspension bearing air blower and gas suspension bearing boosting method |
| CN207393509U (en) * | 2017-10-19 | 2018-05-22 | 潍坊富源增压器有限公司 | Centrifugal blower |
-
2017
- 2017-10-19 CN CN201710996681.5A patent/CN107605765A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009090348A1 (en) * | 2007-10-25 | 2009-07-23 | Airtechnolgies | Gas compression apparatus |
| KR20120065537A (en) * | 2010-12-13 | 2012-06-21 | 주식회사 뉴로스 | Device for preventing the failure of air bearing in turbo blower |
| US20120207585A1 (en) * | 2011-02-07 | 2012-08-16 | Robert Anderson | Centrifugal Compressor |
| CN104121225A (en) * | 2014-08-06 | 2014-10-29 | 南京磁谷科技有限公司 | Centrifugal blower with rotor axial force control device |
| CN104179712A (en) * | 2014-08-20 | 2014-12-03 | 石家庄金士顿轴承科技有限公司 | Air suspension centrifugal blower |
| DE102015007379A1 (en) * | 2015-06-10 | 2016-01-21 | Daimler Ag | Turbomachine for an energy converter, in particular a fuel cell |
| CN205714830U (en) * | 2016-06-28 | 2016-11-23 | 杭州万辰机电科技有限公司 | Centrifugal compressor |
| CN106968972A (en) * | 2017-03-31 | 2017-07-21 | 哈尔滨庆功林气悬浮鼓风机有限公司 | A kind of gas suspension bearing air blower and gas suspension bearing boosting method |
| CN207393509U (en) * | 2017-10-19 | 2018-05-22 | 潍坊富源增压器有限公司 | Centrifugal blower |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111714914A (en) * | 2020-07-07 | 2020-09-29 | 山东禹王生态食业有限公司 | Flash tank for preventing material from leaking |
| CN113931705A (en) * | 2021-11-02 | 2022-01-14 | 上海发电设备成套设计研究院有限责任公司 | Turbine rotor device and operation method thereof |
| CN113931705B (en) * | 2021-11-02 | 2024-04-23 | 上海发电设备成套设计研究院有限责任公司 | Turbine rotor device and operation method thereof |
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