CN207393509U - Centrifugal blower - Google Patents
Centrifugal blower Download PDFInfo
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- CN207393509U CN207393509U CN201721352907.XU CN201721352907U CN207393509U CN 207393509 U CN207393509 U CN 207393509U CN 201721352907 U CN201721352907 U CN 201721352907U CN 207393509 U CN207393509 U CN 207393509U
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- fan
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- impeller
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Abstract
The utility model 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 and impeller of main shaft are direct-connected, and the both ends axle journal of main shaft is separately installed with air-bearing.The centrifugal blower of the utility model, motor direct-drive fan and impeller eliminate traditional gear up transmission mechanism, and entire centrifugal fan structure is compact, small, and energy loss is low, low noise；The both ends axle journal of main shaft installs air-bearing respectively, uses air as lubricant and cooling agent, without additional 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；It is generated between live spindle and static state air-bearing without Mechanical Contact, no abrasion, energy-efficient, low noise is reliable, and for a long time without maintaining, service life of fan is long.
Description
Technical field
The utility model is related to wind turbine technical fields, 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；It the drying of cereal and selects and recommends；Worked
Cheng Zhong drives compressor impeller by common electric machine, and air-flow, axially into blade space, is acted on by wind turbine in high-speed rotating impeller
Further aspect is rotated with impeller, and energy is on the other hand improved under the action of inertia, impeller is left along radial direction, by generation
Centrifugal force does work.
Traditional centrifugal blower be by gear accelerate in a manner of use, such as Authorization Notice No. for 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, this conventional centrifugal wind turbine there are the problem of be：On the one hand, due to using lubricating oil to mechanical friction
Pair is lubricated, and the air that wind turbine exports is caused 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, since 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 generating 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 occupied space is big.
The content of the invention
In view of this, technical problem to be solved in the utility model is：A kind of new-type centrifugal blower is provided, the centrifugation wind
The air of machine output meets cleanliness without any pollution needs of the special industry to wind turbine delivery air without oiliness, clean cleaning；And
Energy loss is low, compact-sized, small.
In order to solve the above technical problems, the technical solution of the utility model is：Centrifugal blower, including：Motor and by described
Motor-driven fan and impeller, the impeller are arranged in compressor casing, and the motor includes motor casing and is arranged at described
Main shaft in motor casing, 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,
The both ends axle journal of the main shaft is separately installed with air-bearing, and the air-bearing is installed in bearing block.
The centrifugal blower of the utility model, since main shaft first end and the fan of motor are direct-connected, second end is direct-connected with impeller,
Motor direct-drive fan and impeller eliminate traditional gear up transmission mechanism, and entire centrifugal fan structure is compact, volume
Small, without additional energy loss, energy loss is low, low noise.Since the both ends axle journal of main shaft is separately installed with air-bearing,
In operation process, lubricant and cooling agent are used air as, without additional lubricating oil system, thus what is exported is without oil
The clean gas of property meets 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
Air-bearing between there is no Mechanical Contact, do not wear generation, thus energy-efficient, low noise, it is reliable, for a long time need not
Maintenance, service life are long.
It is the multinomial further optimization design to the centrifugal blower of the utility model below：
Wherein, it is provided with exhaust pipe on the motor casing.Due to being provided with exhaust pipe, can by the air of motor chamber and
When discharge, beneficial to heat dissipation.
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 bearing block A, which is equipped with, connects the fan chamber 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
The indoor air of chamber enters motor chamber, is effectively radiated to motor component, and is supplied to the air-bearing close to impeller end.
Wherein, the bearing block A is equipped with gas port, and the gas port will be 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 end face of the bearing block A and the back side of the fan.
Wherein, the bearing block positioned at the main shaft second end is bearing block B, the bearing block B and the motor casing
It is fixedly connected, the one side of the bearing block B is equipped with the air-bearing, and the opposite side of the bearing block B is equipped with thrust shaft
It holds.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 end face of the bearing block B is equipped with to accommodate the annular groove of the blowout patche, and the seat ring is fixedly installed in the bearing
The outer end face of seat B.
Wherein, the outer circumferential surface of the seat ring is equipped with seal groove, and sealing ring is equipped in 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, and the high pressure for making the interior air and impeller end as lubricant and cooling agent of motor chamber is 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
The features such as fast high, torque is stable, small, light-weight, the utility model uses the direct-connected fan of permanent magnetic asyn high-speed electric machine and leaf
Wheel, saves conventional gears speed booster driving mechanism, makes entire centrifugal fan structure compact, small, energy loss is small, low noise.
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 scope and performance of centrifugal blower can be expanded.
In conclusion the centrifugal blower of the utility model, compact-sized, small, energy loss is small, low noise；Output
Air without oiliness, cleanliness without any pollution meets cleanliness without any pollution needs of the special industry to wind turbine delivery air.
Description of the drawings
Fig. 1 is the centrifugal fan structure schematic cross-sectional view of the utility model embodiment；
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- exhaust 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.
Specific embodiment
The utility model 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 main-shaft core is defined as outer end face, close to main-shaft core herein
End face be defined as inner face；Term " first ", " second " etc. are only used for description purpose, and it is not intended that instruction or hint phase
To importance；In Fig. 1, straight arrows represent that, by conveying gas flow, curve arrow represents air flow direction.
As shown in Figure 1, the centrifugal blower of the utility model embodiment includes：Motor 6 and the fan 3 that is driven by motor 6 with
Impeller 13, impeller 13 are arranged in compressor casing 12, and fan 3 is provided outside fan guard 2, and motor 6 is preferably high using permanent-magnet synchronous
Speed motor, 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 connection mode is, the fan shaft 1 of fan 3 is threadedly coupled with the first end of main shaft 5, leaf
The impeller axle 18 of wheel 13 is threadedly coupled with the second end of main shaft 5；Air-bearing is installed respectively at the both ends axle journal of main shaft 5
17, air-bearing 17 is installed in the bearing mounting hole of bearing block.
Wherein, the exhaust pipe 8 being connected with motor chamber is provided on motor casing 7.Exhaust pipe 8 is set, it can be by electricity
The air of machine cavity room is discharged in time, is conducive to the timely heat dissipation of parts in motor chamber.
Wherein, bearing block A4 will be defined as positioned at the bearing block of 5 first end of main shaft, 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 bearing block A4 is equipped with connection fan chamber with accommodating the motor cavity of motor 6
The gas passage 41 of room.By gas passage 41, the indoor air of fan chamber enters motor chamber, to parts in motor chamber
It is effectively radiated, and is supplied to the air-bearing 17 close to impeller end.
Wherein, bearing block A4 is equipped 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 the back side of the outer end face of bearing block A4 and fan 3, it is specifically, described
Tooth form sealing structure includes being arranged at the sealing tooth of bearing block A4 outer end faces and matched is arranged at the close of 3 back side of fan
Seal tooth.
Wherein, bearing block B9 will be defined as positioned at the bearing block of 5 second end of main shaft, bearing block B9 is fixed with motor casing 7 to be connected
It connects, air-bearing 17 is installed in the bearing mounting hole of bearing block B9 one sides, the opposite side of bearing block B9 is equipped with thrust shaft
It holds.
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,
The outer end face of bearing block B9 is equipped with to accommodate the annular groove of blowout patche 14, and seat ring 10 is fixedly installed in axis by threaded fastener
The outer end face of bearing B9 is provided with spacer sleeve 15 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 equipped in the outer circumferential surface of seat ring 10, sealing ring 101 is equipped in 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 11 outer end face of seal cover board 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 in the air inlet of compressor casing 12
Body is cast by aluminium alloy.The bushing setting of compressor casing can expand the use scope and performance of centrifugal blower.
After the centrifugal blower of the utility model starts, permanent magnetic asyn high-speed electric machine 6 directly drives 3 He of fan by main shaft 5
The impeller 13 of compressor 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 leading
Stomata 42 forms support and lubrication air film, main shaft 5 and air-bearing shafts into the gap between air-bearing 17 and the axle journal of main shaft 5
Hold 17 relative motions, 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 master
Axis 5 is in suspended state and achievees the purpose that revolution freely, and another part air enters motor chamber through gas passage 41, to electricity
Machine component is effectively radiated, and forms unique cooling system, and is supplied to the air-bearing 17 close to impeller end.In Fig. 1
Shown in straight arrows, entered by conveying gas by compressor casing bushing 16 in compressor casing 12, made in high-speed rotating impeller 13
Under, after pressure and the energy raising of gas, impeller is left along radial direction, discharges and does work from the gas outlet of compressor casing 12.
The above is only the citing of the preferred embodiment of the utility model, wherein the part do not addressed in detail is ability
The common knowledge of domain those of ordinary skill.The scope of protection of the utility model is subject to the content of claim, any based on this
The technical inspiration of utility model and the equivalent transformation carried out, also within the scope of protection of the utility model.
Claims (10)
1. centrifugal blower, including：Motor and by the motor-driven fan and impeller, the impeller is arranged at compressor casing
Interior, the motor includes motor casing and the main shaft that is arranged in the motor casing, which is characterized 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 described in claim 1, which is characterized in that be provided with exhaust pipe on the motor casing.
3. centrifugal blower as described in claim 1, which is characterized in that the bearing block positioned at the main shaft first end is axis
Bearing A, the bearing block A between the motor casing and the fan guard of the fan and respectively with the motor casing, institute
It states 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
A is equipped with the gas passage for connecting motor chamber of the fan chamber with accommodating the motor.
4. centrifugal blower as claimed in claim 3, which is characterized in that the bearing block A is equipped 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, which is characterized in that the outer end face of the bearing block A and the back of the body of the fan
Tooth form sealing structure is provided between face.
6. such as centrifugal blower described in any one of claim 1 to 5, which is characterized in that positioned at described in the main shaft second end
Bearing block is fixedly connected for bearing block B, the bearing block B with the motor casing, and the one side of the bearing block B is equipped with the gas
Floating axle is held, and the opposite side of the bearing block B is equipped with thrust bearing.
7. centrifugal blower as claimed in claim 6, which is characterized in that the thrust bearing includes blowout patche and seat ring, the axis
Circle is fixedly installed in the impeller axle of the impeller, and the outer end face of the bearing block B is equipped with to accommodate the annular of the blowout patche
Groove, the seat ring are fixedly installed in the outer end face of the bearing block B.
8. centrifugal blower as claimed in claim 7, which is characterized in that the outer circumferential surface of the seat ring is equipped with seal groove, described close
Sealing ring is equipped in sealing groove；The outer end 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 described in claim 1, which is characterized in that the motor is permanent magnetic asyn high-speed electric machine.
10. centrifugal blower as described in claim 1, which is characterized 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 |
|---|---|---|---|
| CN201721352907.XU CN207393509U (en) | 2017-10-19 | 2017-10-19 | Centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721352907.XU CN207393509U (en) | 2017-10-19 | 2017-10-19 | Centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393509U true CN207393509U (en) | 2018-05-22 |
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ID=62329067
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721352907.XU Active CN207393509U (en) | 2017-10-19 | 2017-10-19 | Centrifugal blower |
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| Country | Link |
|---|---|
| CN (1) | CN207393509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605765A (en) * | 2017-10-19 | 2018-01-19 | 潍坊富源增压器有限公司 | Centrifugal blower |
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2017
- 2017-10-19 CN CN201721352907.XU patent/CN207393509U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605765A (en) * | 2017-10-19 | 2018-01-19 | 潍坊富源增压器有限公司 | Centrifugal blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220517 Address after: 261206 No. 960 Xingguo Road, Fangzi District, Weifang City, Shandong Province Patentee after: Fuyuan air suspension system (Weifang) Co.,Ltd. Address before: 261206 No.56 Fengshan Road, Fangzi District, Weifang City, Shandong Province Patentee before: WEIFANG FUYUAN TURBOCHARGERS Co.,Ltd. |
|
| TR01 | Transfer of patent right |