CN104154028B - A kind of blower fan that can reduce rotor axial power - Google Patents
A kind of blower fan that can reduce rotor axial power Download PDFInfo
- Publication number
- CN104154028B CN104154028B CN201410385154.7A CN201410385154A CN104154028B CN 104154028 B CN104154028 B CN 104154028B CN 201410385154 A CN201410385154 A CN 201410385154A CN 104154028 B CN104154028 B CN 104154028B
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- Prior art keywords
- nut
- permanent magnetism
- bearing
- magnetism housing
- rotor
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- 230000005389 magnetism Effects 0.000 claims abstract description 43
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of blower fan that can reduce rotor axial power of disclosure, belongs to field of mechanical technique.Blower fan includes rotor, the impeller being installed on rotor end, it is installed on the cooling fan of rotor lower end, it is installed on rotor and between impeller and cooling fan protection bearing and thrust magnetic bearing, protection bearing is installed on bearing block therein, bearing block is installed on the support of bearing therein, protection bearing is positioned at below thrust magnetic bearing, on rotor, the position between protection bearing and cooling fan is connected and installed with a nut, it is installed below a permanent magnetism housing at bearing block, the epimere portion of nut is installed in permanent magnetism housing and the upper end edge of nut does not contact with the lower surface of protection bearing, the hypomere portion of nut is positioned at the lower section of the lower surface of permanent magnetism housing and the lower end edge of nut and contacts with the upper end face of cooling fan, in permanent magnetism housing the bonding epimere portion being provided with nut separately and for nut produce downward suction permanent magnet.
Description
Technical field:
The present invention relates to a kind of blower fan that can reduce rotor axial power, it belongs to field of mechanical technique.
Background technology:
Rotor is the core component of blower fan.When fan operation, the impeller of rotor upper end is owing to being subject to the effect of aerodynamic force, it will cause that whole rotor bears the tensile force f 1 of a upward direction, and the value of this power F1 is very big.In order to balance this pulling force upwards, rotor can be produced a downward suction F2 by the thrust magnetic bearing in blower fan, if F2 is used for complete equipilibrium tensile force f 1 upwards, it will cause that the operating current of thrust magnetic bearing is bigger than normal, so can affect its job stability for a long time, have potential safety hazard.Accordingly, it would be desirable to consider that otherwise assists the impact eliminating this tensile force f 1, or at least offset a part so that the operating current of protection bearing can reduce.
Summary of the invention:
The present invention solves above-mentioned prior art problem, it is provided that a kind of blower fan that can reduce rotor axial power.
The present invention adopts the following technical scheme that a kind of blower fan that can reduce rotor axial power, it includes rotor, the impeller being installed on rotor end, it is installed on the cooling fan of rotor lower end, it is installed on rotor and between impeller and cooling fan protection bearing and thrust magnetic bearing, protection bearing is installed on bearing block therein, bearing block is installed on the support of bearing therein, described protection bearing is positioned at the lower section of thrust magnetic bearing, on described rotor, the position between protection bearing and cooling fan is threaded connection and is provided with a nut, it is installed below a permanent magnetism housing at described bearing block, the epimere portion of described nut is installed in permanent magnetism housing and the upper end edge of nut does not contact with the lower surface of described protection bearing, the hypomere portion of described nut is positioned at the lower section of the lower surface of permanent magnetism housing and the lower end edge of nut and contacts with the upper end face of cooling fan, in described permanent magnetism housing bonding be provided with one with the epimere portion of nut separately and permanent magnet for the nut downward suction of generation.
Further, described nut includes Part I and is positioned at the Part II below Part I, described Part I is up-narrow and down-wide step-like, Part II is also up-narrow and down-wide step-like, described Part I includes Part I top and Part I bottom, Part II includes Part II top and Part II bottom, the external diameter on described Part I top and Part II top is equal, the external diameter of described Part I bottom is more than the external diameter of Part II bottom, and the external diameter of Part II bottom is more than the external diameter on Part II top.
Further, described permanent magnetism housing is the hollow form structure of up/down perforation, the internal face of described permanent magnetism housing is step-like structure, and it includes circular first step and circular second step, described first step is positioned at the top of second step and the outside diameter of the first step outside diameter more than second step, the interior circular diameter of first step is equal to the outside diameter of second step, the interior circular diameter of second step is identical with the diameter of the first through hole being opened on permanent magnetism housing lower surface, the outside diameter of first step is identical with the diameter of the second through hole being opened on permanent magnetism housing upper surface.
Further; the Part I bottom of described nut is positioned on first step; the upper surface of described Part I bottom is lower than the upper surface of permanent magnetism housing; the lower surface of described Part I bottom is positioned at the top of the plane at first step place and is separated at intervals with the plane at first step place, and the upper edge on the Part I top of described nut is positioned at the top of the upper surface of permanent magnetism housing and does not contact with the lower surface of protection bearing.
Further, described permanent magnet is adhered on second step, and the upper surface of permanent magnet is in the same plane with the plane at first step place, and described permanent magnet is positioned at the lower section of the Part I bottom of nut.
Further, the position being positioned at around the second through hole on the upper surface of described permanent magnetism housing is formed with several screw holes for being installed on bearing block by permanent magnetism housing.
Further, the lower surface of described cooling fan is provided through the through hole of cooling fan upper and lower end face, position relative with through hole on the Part II bottom of nut is formed with screw, on the lower surface of cooling fan through hole with screw screws screw with together with being mounted on nut by cooling fan.
There is advantages that the present invention passes through the additional one piece of permanent magnet in lower section of the protection bearing in rotor lower end, by this permanent magnet, the Part I of nut is produced downward suction F3, so that rotor is produced downward axial suction F3 by nut, the tensile force f 1 of upward direction is jointly balanced by the effect of suction F3 and F2, wherein the size of suction F3 depends on the gap between size and nut Part I bottom and the permanent magnet of the permanent magnet corresponding with the lower surface of nut Part I bottom, axial tension F1 upwards can be effectively reduced by said method.
Accompanying drawing illustrates:
Fig. 1 is the structure chart that the present invention can reduce the blower fan of rotor axial power.
Fig. 2 is the close-up schematic view of Fig. 1.
Fig. 3 is the structure chart of nut in Fig. 1, permanent magnet and permanent magnetism housing.
Fig. 4 is the structure chart that permanent magnet is arranged in permanent magnetism housing.
Wherein:
1-rotor, 2-cools down fan；The 4-support of bearing；5-bearing block；6-protects bearing；7-thrust magnetic bearing；8-nut；9-permanent magnetism housing；10-permanent magnet；20-through hole；80-Part I；81-Part II；800-Part I top；801-Part I bottom；810-Part II top；811-Part II bottom；812-screw；90-first step；91-second step；92-screw hole；93-the first through hole；94-the second through hole.
Detailed description of the invention:
Refer to shown in Fig. 1 to Fig. 4, blower fan of the present invention includes rotor 1, be installed on the impeller of end on rotor 1 (not shown), be installed on rotor 1 lower end cooling fan 2, be installed on rotor 1 and protection bearing 6 between impeller and cooling fan 2 and thrust magnetic bearing 7.Wherein protection bearing 6 is positioned at the lower section of thrust magnetic bearing 7, and protection bearing 6 is installed on bearing block 5, and bearing block 5 is installed on the support of bearing 4.
On rotor 1, the position between protection bearing 6 and cooling fan 2 is provided with a nut 8; the upper end face of nut 8 does not contact with the lower surface of protection bearing 6; the rear surface of nut 8 contacts with the upper end face of cooling fan 2, and nut 8 is threaded connection and is installed on rotor 1.Nut 8 includes Part I 80 and is positioned at the Part II 81 below Part I 80, wherein Part I 80 is up-narrow and down-wide step-like, Part II 81 is also up-narrow and down-wide step-like, Part I 80 includes Part I top 800 and Part I bottom 801, Part II 81 includes Part II top 810 and Part II bottom 811, wherein the external diameter on Part I top 800 and Part II top 810 is equal, the external diameter of Part I bottom 801 is more than the external diameter of Part II bottom 811, and the external diameter of Part II bottom 811 is more than the external diameter on Part II top 810.
Being installed below permanent magnetism housing 9 at bearing block 5, the cross section of permanent magnetism housing 9 is trapezoidal shape wide at the top and narrow at the bottom, and the hollow form structure that permanent magnetism housing 9 is up/down perforation.The internal face of permanent magnetism housing 9 is step-like structure, and it includes circular first step 90 and circular second step 91, wherein first step 90 is positioned at the top of second step 91 and the outside diameter of first step 90 outside diameter more than second step 91, the interior circular diameter of first step 90 is equal to the outside diameter of second step 91, the interior circular diameter of second step 91 is identical with the diameter of the first through hole 93 being opened on permanent magnetism housing 9 lower surface, and the outside diameter of first step 90 is identical with the diameter of the second through hole 94 being opened on permanent magnetism housing 9 upper surface.Permanent magnetism housing 9 is installed on the periphery of nut 8; and make the Part I bottom 801 of nut 8 be positioned on first step 90; wherein the upper surface of Part I bottom 801 is lower than the upper surface of permanent magnetism housing 9; the lower surface of Part I bottom 801 is positioned at the top of the plane at first step 90 place and is separated at intervals with the plane at first step 90 place, and the upper edge on the Part I top 800 of nut 8 is positioned at the top of the upper surface of permanent magnetism housing 9 and does not contact with the lower surface of protection bearing 9.Part II bottom 811 is positioned at the lower section of the lower surface of permanent magnetism housing 9, and the position being positioned at around the second through hole 94 on the upper surface of permanent magnetism housing 9 is formed with several screw holes 92 for permanent magnetism housing 9 being installed on bearing block 5.Second step 91 is painted with one layer of glue, by glue, permanent magnet 10 is bonded on second step 91, wherein the upper surface of the permanent magnet 10 and plane at first step 90 place is in the same plane and then makes permanent magnet 10 there is gap between the lower surface of the lower section of the lower surface of the Part I bottom 801 of nut 8 and the Part I bottom 801 of the upper surface of permanent magnet 10 and nut 8.
The lower surface of cooling fan 2 is provided through the through hole 20 of cooling fan 2 upper and lower end face, position relative with through hole 20 on the Part II bottom 811 of nut 8 is formed with screw 812, on the lower surface of cooling fan 2 at through hole 20 together with screwing screw in screw 812 and then be mounted on nut 8 by cooling fan 2.
The present invention additional one piece of permanent magnet in lower section by the protection bearing in rotor lower end; by this permanent magnet, the Part I of nut is produced downward suction F3; so that rotor is produced downward axial suction F3 by nut; the tensile force f 1 of upward direction is jointly balanced by the effect of suction F3 and F2; wherein the size of suction F3 depends on the gap between size and nut Part I bottom and the permanent magnet of the permanent magnet corresponding with the lower surface of nut Part I bottom, can effectively reduce axial tension F1 upwards by said method.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be regarded as protection scope of the present invention.
Claims (7)
1. the blower fan that can reduce rotor axial power, it includes rotor (1), it is installed on the impeller of the upper end of rotor (1), it is installed on the cooling fan (2) of rotor (1) lower end, it is installed on rotor (1) and is positioned at the protection bearing (6) between impeller and cooling fan (2) and thrust magnetic bearing (7), protection bearing (6) is installed on bearing block therein (5), bearing block (5) is installed on the support of bearing therein (4), described protection bearing (6) is positioned at the lower section of thrust magnetic bearing (7), it is characterized in that: the position being positioned between protection bearing (6) and cooling fan (2) on described rotor (1) is threaded connection and is provided with a nut (8), it is installed below a permanent magnetism housing (9) at described bearing block (5), the epimere portion of described nut (8) is installed in permanent magnetism housing (9) and the upper end edge of nut (8) does not contact with the lower surface of described protection bearing (6), the hypomere portion of described nut (8) is positioned at the lower section of the lower surface of permanent magnetism housing (9) and the lower end edge of nut (8) and contacts with the upper end face of cooling fan (2), in described permanent magnetism housing (9) bonding be provided with one with the epimere portion of nut (8) separately and the permanent magnet (10) that produces downward suction for nut (8).
2. a kind of blower fan that can reduce rotor axial power as claimed in claim 1, it is characterized in that: described nut (8) includes Part I (80) and is positioned at the Part II (81) of Part I (80) lower section, described Part I (80) is for up-narrow and down-wide step-like, Part II (81) is also up-narrow and down-wide step-like, described Part I (80) includes Part I top (800) and Part I bottom (801), Part II (81) includes Part II top (810) and Part II bottom (811), the external diameter of described Part I top (800) and Part II top (810) is equal, the external diameter of described Part I bottom (801) is more than the external diameter of Part II bottom (811), and the external diameter of Part II bottom (811) is more than the external diameter of Part II top (810).
3. a kind of blower fan that can reduce rotor axial power as claimed in claim 2, it is characterized in that: the hollow form structure that described permanent magnetism housing (9) is up/down perforation, the internal face of described permanent magnetism housing (9) is step-like structure, and it includes circular first step (90) and circular second step (91), described first step (90) is positioned at the top of second step (91) and the outside diameter of first step (90) outside diameter more than second step (91), the interior circular diameter of first step (90) is equal to the outside diameter of second step (91), the interior circular diameter of second step (91) is identical with the diameter of the first through hole (93) being opened on permanent magnetism housing (9) lower surface, the outside diameter of first step (90) is identical with the diameter of the second through hole (94) being opened on permanent magnetism housing (9) upper surface.
4. a kind of blower fan that can reduce rotor axial power as claimed in claim 3, it is characterized in that: the Part I bottom (801) of described nut (8) is positioned on first step (90), the upper surface of described Part I bottom (801) is lower than the upper surface of permanent magnetism housing (9), the lower surface of described Part I bottom (801) is positioned at the top of the plane at first step (90) place and is separated at intervals with the plane at first step (90) place, the upper edge on the Part I top (800) of described nut (8) is positioned at the top of the upper surface of permanent magnetism housing (9) and does not contact with the lower surface of protection bearing (6).
5. a kind of blower fan that can reduce rotor axial power as claimed in claim 4, it is characterized in that: described permanent magnet (10) is adhered on second step (91), and the upper surface of permanent magnet (10) is in the same plane with the plane at first step (90) place, described permanent magnet (10) is positioned at the lower section of the Part I bottom (801) of nut (8).
6. a kind of blower fan that can reduce rotor axial power as claimed in claim 5, it is characterised in that: the position being positioned at around the second through hole (94) on the upper surface of described permanent magnetism housing (9) is formed with several screw holes (92) for permanent magnetism housing (9) being installed on bearing block (5).
7. a kind of blower fan that can reduce rotor axial power as claimed in claim 6, it is characterized in that: on the lower surface of described cooling fan (2), be provided through the through hole (20) of cooling fan (2) upper and lower end face, in the Part II bottom (811) of nut (8), the upper position relative with through hole (20) is formed with screw (812), screws into screw cooling fan (2) and nut (8) to be mounted on together on the lower surface cooling down fan (2) in through hole (20) and screw (812).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385154.7A CN104154028B (en) | 2014-08-06 | 2014-08-06 | A kind of blower fan that can reduce rotor axial power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385154.7A CN104154028B (en) | 2014-08-06 | 2014-08-06 | A kind of blower fan that can reduce rotor axial power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154028A CN104154028A (en) | 2014-11-19 |
| CN104154028B true CN104154028B (en) | 2016-06-29 |
Family
ID=51879619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410385154.7A Withdrawn - After Issue CN104154028B (en) | 2014-08-06 | 2014-08-06 | A kind of blower fan that can reduce rotor axial power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154028B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979214A (en) * | 2017-12-28 | 2018-05-01 | 南京磁谷科技有限公司 | The mounting structure of anticollision thrust disc in a kind of magnetic suspension motor rotor |
| CN111089709B (en) * | 2018-10-19 | 2021-04-20 | 华北电力大学 | Multifunctional heavy-load rotor testing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0530518A1 (en) * | 1991-09-04 | 1993-03-10 | Sulzer Turbo AG | Turbo machine |
| CN103441612A (en) * | 2013-09-02 | 2013-12-11 | 南京磁谷科技有限公司 | Magnetic suspension permanent-magnet synchronous high-power high-speed draught fan |
| CN204061282U (en) * | 2014-08-06 | 2014-12-31 | 南京磁谷科技有限公司 | A kind of blower fan that can reduce rotor axial power |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2677177B1 (en) * | 2012-06-22 | 2020-10-14 | Skf Magnetic Mechatronics | Electric centrifugal compressor for vehicles |
-
2014
- 2014-08-06 CN CN201410385154.7A patent/CN104154028B/en not_active Withdrawn - After Issue
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0530518A1 (en) * | 1991-09-04 | 1993-03-10 | Sulzer Turbo AG | Turbo machine |
| CN103441612A (en) * | 2013-09-02 | 2013-12-11 | 南京磁谷科技有限公司 | Magnetic suspension permanent-magnet synchronous high-power high-speed draught fan |
| CN204061282U (en) * | 2014-08-06 | 2014-12-31 | 南京磁谷科技有限公司 | A kind of blower fan that can reduce rotor axial power |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104154028A (en) | 2014-11-19 |
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Denomination of invention: Blower capable of reducing axial force of rotor Effective date of registration: 20171019 Granted publication date: 20160629 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Nanjing CIGU Limited Corporation Registration number: 2017320000042 |
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Date of cancellation: 20180302 Granted publication date: 20160629 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Nanjing CIGU Limited Corporation Registration number: 2017320000042 |
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Denomination of invention: Blower capable of reducing axial force of rotor Effective date of registration: 20180322 Granted publication date: 20160629 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Nanjing CIGU Limited Corporation Registration number: 2018320000031 |
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Date of cancellation: 20190424 Granted publication date: 20160629 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Nanjing CIGU Limited Corporation Registration number: 2018320000031 |
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Denomination of invention: Blower capable of reducing axial force of rotor Effective date of registration: 20190521 Granted publication date: 20160629 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Nanjing CIGU Limited Corporation Registration number: 2019320000238 |
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Address after: No. 99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |
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Date of cancellation: 20200615 Granted publication date: 20160629 Pledgee: Bank of Beijing Limited by Share Ltd. Nanjing branch Pledgor: NANJING CIGU Ltd.,Corp. Registration number: 2019320000238 |
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