CN108270305A - The high-speed centrifugal blower that a kind of permanent magnet motor directly drives - Google Patents
The high-speed centrifugal blower that a kind of permanent magnet motor directly drives Download PDFInfo
- Publication number
- CN108270305A CN108270305A CN201810215839.5A CN201810215839A CN108270305A CN 108270305 A CN108270305 A CN 108270305A CN 201810215839 A CN201810215839 A CN 201810215839A CN 108270305 A CN108270305 A CN 108270305A
- Authority
- CN
- China
- Prior art keywords
- rotor
- permanent magnet
- magnet motor
- impeller
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The high-speed centrifugal blower that a kind of permanent magnet motor directly drives, the permanent magnet motor including the casing with inlet and outlet, the receded disk impeller rotated in casing the and coaxial transmission impeller；The permanent magnet motor includes stator and the p-m rotor being spaced from air gap；The p-m rotor includes rotor core and is fixed on the permanent magnet of iron core；The impeller diameter is 100~300mm, and rated speed is not less than 3000r/m；It is characterized in that：The cylindrical surface that the p-m rotor is located at air gap is processed as multi start thread.The design is substantially reduced p-m rotor surface temperature rise, but can retention property.
Description
Technical field
The present invention relates to the high-speed centrifugal blower that a kind of permanent magnet motor directly drives, IPC classification belongs to F04D25/
06。
Background technology
Fever is serious during the p-m rotor surface operating for the high-speed centrifugal blower that permanent magnet motor directly drives, and with normal
The type of cooling of rule is difficult to improve.
In addition to present specification indicates, national sector standard JB/T 2977-2005 are seen in relation to term and common knowledge
《Industrial ventilation machine, turbo blower and compressor vocabulary of terms》,《Mechanical engineering manual》With《Motor engineering handbook》.
Invention content
The technical problems to be solved by the invention are to propose the high speed centrifugation air blast that a kind of permanent magnet motor directly drives
Machine, comparable traditional design are substantially reduced the Wen Sheng of rotor, and relatively simple for structure, and reliability is preferably and efficiency is higher.
The technical solution that the present invention solves the technical problem is the high speed centrifugation drum that a kind of permanent magnet motor directly drives
Wind turbine, the permanent magnetism including the casing with inlet and outlet, the receded disk impeller rotated in casing the and coaxial transmission impeller
Motor；The permanent magnet motor includes stator and the p-m rotor being spaced from air gap；The p-m rotor includes rotor iron
Core and the permanent magnet for being fixed on iron core；The impeller diameter is 100~300mm, and rated speed is not less than 3000r/m；
It is characterized in that：The cylindrical surface that the p-m rotor is located at air gap is processed as multi start thread.
Rotor cylinder surface, which is processed as screw thread, can dramatically increase the heat exchange area of rotor surface and air gap air and in rotor
It generates axial flow during rotation to discharge the hot-air in air gap, especially multi start thread has great-lift angle and can make full use of rotor
Cylindrical surface in motor operation, the air in air gap is sent with shorter flow generation efficient blower and forms larger axis
To exhaust air rate and reach higher spiral wind speed, be more advantageous to the heat dissipation of rotor surface.Experiment shows that multi start thread is substantially reduced
P-m rotor surface temperature rise, thus the shallower depth of thread can be used, its occupancy to air gap is reduced with retention property.
One of modular design of the technical solution is：The lift angle of the screw thread is 45 ° ± 10 °.The lift angle of screw thread is in the model
It encloses can reach and has higher pumping efficiency to the air in air gap.
The modular design of the technical solution second is that：The screw pitch of the screw thread is not more than 5 times of gas length.The design can
Reach enough cooling effect and magnetic circuit is influenced smaller.
The three of the modular design of the technical solution are：The helical pitch of the screw thread is 0.4~2 times of rotor length, and is described
The product of the number of leads and screw pitch.The design reaches the full utilization rotor cylinder surface, thus under equal conditions generates more
Big axial exhaust air rate reaches higher spiral wind speed.
The technical solution is further designed to：
--- the cylindrical surface that the stator is located at air gap is processed as the multi-thread of screw pitch similary with p-m rotor, helical pitch and line number
Screw thread can further strengthen spiral wind speed and axial exhaust air rate；
--- the precession direction of the screw thread is consistent along the intrinsic airflow direction of axis in motor.
Technical solution of the present invention and its modular design will further illustrate in a specific embodiment.
Description of the drawings
Fig. 1 is the high-speed centrifugal blower structure main cross-sectional schematic diagram that permanent magnet motor of the embodiment of the present invention directly drives.
Fig. 2 is Fig. 1 structure Section A-A schematic cross-sectional views.
Fig. 3 is rotor of embodiment of the present invention assembling appearance schematic diagram.
Specific embodiment
The embodiment of the present invention is improved on the basis of traditional structure, as shown in Figure 1, Figure 2 and Figure 3.The motor
The design for continuing to use the prior art includes：
--- casing 1, with import 2 and outlet 3；
--- shaft 6；
--- impeller 4 is fixed in shaft 6 and is rotated in casing 1；
--- engine base 5 is connected as one with casing 1；
--- end cap 71,72 is covered in axial two ends of engine base 5；
--- stator 10 is fixed on 5 inner cavity of engine base, including stator core 101 and stator winding 102；
--- rotor 12 is fixed on shaft 6, including rotor core 3 and positioned at secondly end for compressing iron core or simultaneous lead
The end ring 9 of electricity, shaft 6 are supported on end cap 71,72 through bearing；
--- the outer circle of rotor 12 and between the iron core inner circle of stator 10 have air gap 32；
--- a plurality of axial ventilation road 21 is formed between the iron core outer cylinder of 5 inner cylinder of engine base and stator 10；
--- 8 axial water-cooled channels 8 that the housing setting of engine base 5 is sequentially connected in series, and it is connected to water outside machine through pipe fitting
Circulatory system (not shown)；
--- rotor 12 is p-m rotor, and the permanent magnet 13 of 16 i.e. 8 pair pole is bumped into, and be provided with 8 in laminated core 14
Axial ventilation road 31；
--- the axially extended blade 121 of 12 right end of rotor, left end are fixed on shaft 6 with axial--flow blading 99 and are formed axial-flow type
Impeller.When rotor 12 rotates, the interior circulating current in direction as shown in fig. 1 is formed, wherein the airflow direction for flowing through air gap 32 is
From right-to-left.
Design is changed：
--- the whole length of rotor core outer round surface is machined as multi-thread external screw thread 50, and thread shape is triangle, screw pitch 1
~4mm, helical pitch are about the 1/2 of rotor length, by the specified steering of motor precession to the left.At this point, by common rotor length, spiral shell
Streakline number is 30~70；By common root diameter, the lift angle of screw thread is 45 ° ± 10 °.
--- stator core internal circular surfaces are machined as the multi-thread internal thread 60 consistent with 50 parameter of rotor multi start thread.
The present embodiment can have following design change：
--- only rotor core outer round surface processing screw thread, and stator iron core inner circle surface does not process screw thread, although effect
It is slightly worse, but technique can significantly simplify；
--- thread shape is trapezoidal thread when screw thread is shallower, can also be changed to rectangular thread, reach larger heat exchange
Area and on magnetic circuit influence it is smaller.
Claims (5)
1. a kind of high-speed centrifugal blower that permanent magnet motor directly drives, including the casing with inlet and outlet, in casing
The permanent magnet motor of the receded disk impeller and coaxial transmission of interior the rotation impeller；The permanent magnet motor include stator and with air gap with
Its p-m rotor separated；The p-m rotor includes rotor core and is fixed on the permanent magnet of iron core；The impeller diameter is
100~300mm, rated speed are not less than 3000r/m；It is characterized in that：The p-m rotor is located at the cylindrical surface processing of air gap
For multi start thread.
2. according to air blower described in claim 1, it is characterised in that：The lift angle of the screw thread is 45 ° ± 10 °.
3. according to air blower described in claim 1, it is characterised in that：The screw pitch of the screw thread is not more than 5 times of gas length.
4. according to air blower described in claim 1 or claim 2 or claim 3, it is characterised in that：The stator is located at gas
The cylindrical surface of gap is processed as the multi start thread of screw pitch similary with p-m rotor, helical pitch and line number.
5. according to air blower described in claim 1 or claim 2 or claim 3, it is characterised in that：The precession of the screw thread
Direction is consistent along the intrinsic airflow direction of axis in motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810215839.5A CN108270305A (en) | 2018-03-15 | 2018-03-15 | The high-speed centrifugal blower that a kind of permanent magnet motor directly drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810215839.5A CN108270305A (en) | 2018-03-15 | 2018-03-15 | The high-speed centrifugal blower that a kind of permanent magnet motor directly drives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108270305A true CN108270305A (en) | 2018-07-10 |
Family
ID=62774981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810215839.5A Pending CN108270305A (en) | 2018-03-15 | 2018-03-15 | The high-speed centrifugal blower that a kind of permanent magnet motor directly drives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108270305A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526244A (en) * | 2022-01-26 | 2022-05-24 | 清华大学 | Shielded rotary fluid machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773358Y (en) * | 2005-03-11 | 2006-04-19 | 谢丹平 | High-speed magnetic-suspension centrifugal blower |
| CN107681830A (en) * | 2017-10-18 | 2018-02-09 | 江门市地尔汉宇电器股份有限公司 | A kind of totally enclosed motor and its air-cooled impeller and the electric car using the motor |
-
2018
- 2018-03-15 CN CN201810215839.5A patent/CN108270305A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773358Y (en) * | 2005-03-11 | 2006-04-19 | 谢丹平 | High-speed magnetic-suspension centrifugal blower |
| CN107681830A (en) * | 2017-10-18 | 2018-02-09 | 江门市地尔汉宇电器股份有限公司 | A kind of totally enclosed motor and its air-cooled impeller and the electric car using the motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526244A (en) * | 2022-01-26 | 2022-05-24 | 清华大学 | Shielded rotary fluid machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180710 |
|
| RJ01 | Rejection of invention patent application after publication |