CN104100574A - Mechanism for synchronously adjusting diffusion guide vanes of fan - Google Patents
Mechanism for synchronously adjusting diffusion guide vanes of fan Download PDFInfo
- Publication number
- CN104100574A CN104100574A CN201410330903.6A CN201410330903A CN104100574A CN 104100574 A CN104100574 A CN 104100574A CN 201410330903 A CN201410330903 A CN 201410330903A CN 104100574 A CN104100574 A CN 104100574A
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- China
- Prior art keywords
- diffusion guide
- positioning plate
- pivoted arm
- supporting positioning
- diffusion
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Abstract
The invention relates to a mechanism for synchronously adjusting diffusion guide vanes of a fan, in particular to a mechanical device on the high-speed centrifugal fan and used for synchronously adjusting angles of the diffusion guide vanes, and belongs to the technical field of mechanical structures. The mechanism comprises a volute, a gearbox flange, an impeller, a high-speed shaft, the diffusion guide vanes, a supporting positioning plate, rotating arms, a synchronous guide disc and a driving rod, the diffusion guide vanes are arranged on the supporting positioning plate, guide vane shaft portions of the diffusion guide vanes are rotatably mounted in the supporting positioning plate, the diffusion guide vanes are identical in direction, the synchronous guide disc is arranged in the gearbox flange, the rotating arms corresponding to the diffusion guide vanes in a one-to-one manner are arranged on the synchronous guide disc, and rotating arm shaft portions of the rotating arms are rotatably mounted on the synchronous guide disc. The mechanism is low in manufacturing cost, small in mounting accumulated error, high in synchronous adjusting accuracy and high in rigidity, and vibrating noise when the mechanism is in use is lowered greatly.
Description
Technical field
The present invention relates to a kind of blower fan diffusion guide vane synchronous adjusting mechanism, specifically it be on a kind of high-speed centrifugal fan for the synchronous mechanical device of adjusting diffusion guide blade angle, belong to mechanical structure technical field.
Background technique
In prior art, the diffusion guide blade on high-speed centrifugal fan has two kinds: a kind of is fixing nonadjustable; Another kind is adjustable.Adjustable diffusion guide blade can guarantee that high-speed centrifugal fan moves in high efficiency state all the time under different applying working conditions, reaches more energy-conservation object.In prior art, the synchronous adjustment of adjustable diffusion guide blade generally adopts gear, sprocket wheel or leverage class push and pull system to realize, gear, sprocket system complexity, and manufacture cost is high; Leverage class push and pull system poor rigidity, vibration noise are large.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, thereby a kind of blower fan diffusion guide vane synchronous adjusting mechanism is provided, its low cost of manufacture, the simple and good rigidly of mechanism, vibrates little.
According to technological scheme provided by the invention, a kind of blower fan diffusion guide vane synchronous adjusting mechanism comprises spiral case, gear-box flange, impeller, high speed shaft, diffusion guide blade, supporting positioning plate, pivoted arm, synchronization steering dish and driveshaft, spiral case and gear-box flange are bolted, and supporting positioning plate is bolted in gear-box flange; Supporting positioning plate center is through high speed shaft, and high speed shaft is Spielpassung with supporting positioning plate, and described high speed shaft left end connects impeller by clamping bolt, and impeller is positioned at spiral case; Diffusion guide blade shaft rear end is provided with keyway; The rotating arm part of described pivoted arm is provided with keyway and locking slot.It is characterized in that: on supporting positioning plate, be provided with a plurality of diffusion guide blades, a plurality of diffusion guide blades are uniformly distributed along supporting positioning plate circumferencial direction, the stator axial region of a plurality of diffusion guide blades is rotatably installed in supporting positioning plate, the stator portion of a plurality of diffusion guide blades is positioned at the outer ring of snail box-shrouded impeller, and the blade circumferencial direction of described a plurality of diffusion guide blades is identical; In gear-box flange, be provided with synchronization steering dish, on synchronization steering dish, be provided with and diffusion guide blade a plurality of pivoted arms one to one, a plurality of pivoted arms are uniformly distributed along synchronization steering dish circumferencial direction, the pivoted arm axial region of a plurality of pivoted arms is rotatably installed on synchronization steering dish, the rotating arm part of pivoted arm is connected location by flat key with the stator axial region keyway of diffusion guide blade, and by pivoted arm clamping bolt, lock, the axis that the pivoted arm axial region central axis of each pivoted arm and the rotating arm part central axis of pivoted arm (being diffusion guide blade central axis) form be parallel to each other and direction consistent; On described gear-box flange, by driveshaft bearing, connect driveshaft, driveshaft front end is provided with eccentric shaft, and eccentric shaft connects the radial bearing that is positioned at synchronization steering dish.
Further, between stator axial region and supporting positioning plate, be provided with stator axle sleeve.
Further, diffusion guide blade is 9～21.
Further, between pivoted arm axial region and synchronization steering dish, be provided with pivoted arm axle sleeve.
Further, driveshaft bearing outside is provided with bearing cover, and bearing cover prevents driveshaft bearing separating tooth roller box flange.
Compared with the prior art the present invention has the following advantages:
The present invention is simple in structure, compact, reasonable, and manufacture cost is lower, and installation accumulated error is little, synchronous regulation precision is higher.And good rigidly, has reduced the vibration noise under applying working condition greatly.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention.
Fig. 2 is left view of the present invention.
Fig. 3 is right elevation of the present invention.
Description of reference numerals: 1-spiral case, 2-gear-box flange, 3-impeller, 4-clamping bolt, 5-high speed shaft, 6-diffusion guide blade, 6.1-stator axial region, 6.2-stator portion, 7-stator axle sleeve, 8-stator axle sleeve, 9-flat key, 10-pivoted arm clamping bolt, 11-pivoted arm, 11.1-pivoted arm axial region, 11.2-rotating arm part, 12-pivoted arm axle sleeve, 13-synchronization steering dish, 14-radial bearing, 15-driveshaft bearing, 16-bearing cover, 17-driveshaft, 18-eccentric shaft, 19-Diffuser, O
1-driveshaft central axis, O
2-diffusion guide blade central axis, O
3-pivoted arm axial region central axis.
Embodiment
The present invention is below further described in connection with the embodiment in accompanying drawing:
As shown in Fig. 1 ~ 3, the present invention mainly comprises spiral case 1, gear-box flange 2, impeller 3, high speed shaft 5, diffusion guide blade 6, supporting positioning plate 8, pivoted arm 11, synchronization steering dish 13 and driveshaft 17, spiral case 1 and gear-box flange 2 are bolted, and supporting positioning plate 8 is bolted in gear-box flange 2.Supporting positioning plate 8 centers are through high speed shaft 5, and high speed shaft 5 is Spielpassung with supporting positioning plate 8.Described high speed shaft 5 left ends connect impeller 3 by clamping bolt 4, and impeller 3 is positioned at spiral case 1.Described diffusion guide blade 6 stator axial region 6.1 rear ends are provided with keyway.The rotating arm part 11.2 of described pivoted arm 11 is provided with keyway and locking slot.
On supporting positioning plate 8, be provided with a plurality of diffusion guide blades 6, a plurality of diffusion guide blades 6 are uniformly distributed along supporting positioning plate 8 circumferencial directions.The stator axial region 6.1 of described a plurality of diffusion guide blade 6 is rotatably installed in supporting positioning plate 8, between stator axial region 6.1 and supporting positioning plate 8, is provided with stator axle sleeve 7, and the stator portion 6.2 of a plurality of diffusion guide blades 6 is positioned at the outer ring of spiral case 1 impeller 3.
The blade circumferencial direction of described a plurality of diffusion guide blade 6 is identical, and diffusion guide blade 6 is generally 9～21.
In gear-box flange 2, be provided with synchronization steering dish 13, be provided with and diffusion guide blade 6 a plurality of pivoted arms 11 one to one on synchronization steering dish 13, a plurality of pivoted arms 11 are uniformly distributed along synchronization steering dish 13 circumferencial directions.The pivoted arm axial region 11.1 of described a plurality of pivoted arm 11 is rotatably installed on synchronization steering dish 13, between pivoted arm axial region 11.1 and synchronization steering dish 13, be provided with pivoted arm axle sleeve 12, the rotating arm part 11.2 of pivoted arm 11 is connected location by flat key 9 with the keyway of stator axial region 6.1 rear ends of diffusion guide blade 6, and by 10 lockings of pivoted arm clamping bolt, the central axis O of the pivoted arm axial region 11.1 of each pivoted arm 11
3with the central axis of the rotating arm part 11.1 of pivoted arm 11 (be O
2-diffusion guide blade central axis) axis forming be parallel to each other and direction consistent.
On described gear-box flange 2, by driveshaft bearing 15, connect driveshaft 17, driveshaft 17 front ends are provided with eccentric shaft 18, and eccentric shaft 18 connects the radial bearing 14 that is positioned at synchronization steering dish 13.
Described driveshaft bearing 15 outsides are provided with bearing cover 16, and bearing cover 16 prevents driveshaft bearing 15 separating tooth roller box flanges 2.
In high-speed centrifugal fan, the air hydrodynamic that impeller produces is that impeller outer ring is to a cylinder ring cavity of volute chamber centre by the Diffuser 19(Diffuser of spiral case inside) be transformed into the static air pressure in volute chamber, 9～21 diffusion guide blades are installed in Diffuser conventionally, stator designs according to aerodynamic optimization, there is unsymmetrical section, the effect of stator is to make resistance of air minimum, to improve the operational efficiency of blower fan, reaches energy-conservation object.When actual conditions off-design operating mode, by the angle of synchronous these diffusion guide blades of adjustment, can make blower fan in high efficiency state, move all the time under different operating modes.
Working principle and the process of the present invention to the synchronous adjustment of diffusion guide blade:
As shown in Fig. 1 ~ 3, the present invention, by being applied to the power F on driveshaft, makes driveshaft do rotation motion (with O
1for gyration center), the eccentric shaft on driveshaft drives synchronization steering dish to rotate, and forces pivoted arm synchronously around diffusion guide blade central axis O
2do rotation motion, the revolution that diffusion guide blade is made respective angles with the rotation of pivoted arm is (with O
2for center of rotation), realized thus the adjustment to diffusion guide blade angle.Because the direction of pivoted arm is consistent, this just guarantees that to the adjustment of diffusion guide blade be synchronous (adjusting angle conventionally in ± 18 °).
Low cost of manufacture of the present invention, good rigidly, vibrates minimumly, and can guarantee that blower fan remains high efficiency state operation under very wide applying working condition.
Claims (5)
1. a blower fan diffusion guide vane synchronous adjusting mechanism, comprise spiral case (1), gear-box flange (2), impeller (3), high speed shaft (5), diffusion guide blade (6), supporting positioning plate (8), pivoted arm (11), synchronization steering dish (13) and driveshaft (17), spiral case (1) and gear-box flange (2) are bolted, and supporting positioning plate (8) is bolted in gear-box flange (2), supporting positioning plate (8) center is through high speed shaft (5), high speed shaft (5) is Spielpassung with supporting positioning plate (8), described high speed shaft (5) left end connects impeller (3) by clamping bolt (4), and impeller (3) is positioned at spiral case (1), and diffusion guide blade shaft rear end is provided with keyway, the rotating arm part of described pivoted arm is provided with keyway and locking slot, it is characterized in that: on supporting positioning plate (8), be provided with a plurality of diffusion guide blades (6), a plurality of diffusion guide blades (6) are uniformly distributed along supporting positioning plate (8) circumferencial direction, the stator axial region (6.1) of a plurality of diffusion guide blades (6) is rotatably installed in supporting positioning plate (8), the stator portion (6.2) of a plurality of diffusion guide blades (6) is positioned at the outer ring of spiral case (1) impeller (3), and the blade circumferencial direction of described a plurality of diffusion guide blades (6) is identical, in gear-box flange (2), be provided with synchronization steering dish (13), on synchronization steering dish (13), be provided with and diffusion guide blade (6) a plurality of pivoted arms (11) one to one, a plurality of pivoted arms (11) are uniformly distributed along synchronization steering dish (13) circumferencial direction, the pivoted arm axial region (11.1) of a plurality of pivoted arms (11) is rotatably installed on synchronization steering dish (13), the rotating arm part of pivoted arm (11) is connected location by flat key with the stator axial region keyway of diffusion guide blade, and by pivoted arm clamping bolt (10) locking, the axis that the pivoted arm axial region central axis of each pivoted arm and the rotating arm part central axis of pivoted arm form be parallel to each other and direction consistent, described gear-box flange (2) is upper connects driveshaft (17) by driveshaft bearing (15), and driveshaft (17) front end is provided with eccentric shaft (18), and eccentric shaft (18) connects the radial bearing (14) that is positioned at synchronization steering dish (13).
2. a kind of blower fan diffusion guide vane synchronous adjusting mechanism as claimed in claim 1, is characterized in that: between described stator axial region (6.1) and supporting positioning plate (8), be provided with stator axle sleeve (7).
3. a kind of blower fan diffusion guide vane synchronous adjusting mechanism as claimed in claim 1, is characterized in that: described diffusion guide blade (6) is 9～21.
4. a kind of blower fan diffusion guide vane synchronous adjusting mechanism as claimed in claim 1, is characterized in that: between described pivoted arm axial region (11.1) and synchronization steering dish (13), be provided with pivoted arm axle sleeve (12).
5. a kind of blower fan diffusion guide vane synchronous adjusting mechanism as claimed in claim 1, is characterized in that: described driveshaft bearing (15) outside is provided with bearing cover (16), and bearing cover (16) prevents driveshaft bearing (15) separating tooth roller box flange (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330903.6A CN104100574A (en) | 2014-07-11 | 2014-07-11 | Mechanism for synchronously adjusting diffusion guide vanes of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330903.6A CN104100574A (en) | 2014-07-11 | 2014-07-11 | Mechanism for synchronously adjusting diffusion guide vanes of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104100574A true CN104100574A (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410330903.6A Pending CN104100574A (en) | 2014-07-11 | 2014-07-11 | Mechanism for synchronously adjusting diffusion guide vanes of fan |
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| CN (1) | CN104100574A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087342A (en) * | 2018-01-16 | 2018-05-29 | 江苏杰尔科技股份有限公司 | A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure |
| CN109236750A (en) * | 2018-08-06 | 2019-01-18 | 南京磁谷科技有限公司 | A kind of adjustment structure of air intake duct and impeller concentricity |
| CN111852908A (en) * | 2019-04-30 | 2020-10-30 | 广东美的制冷设备有限公司 | Fan assembly and air conditioner |
| CN116557320A (en) * | 2023-06-05 | 2023-08-08 | 远东双诚风机(江苏)有限公司 | Active silencing type high-speed centrifugal fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5460484A (en) * | 1993-05-26 | 1995-10-24 | Nissan Motor Co., Ltd. | Air flow guiding mechanism for compressor inlet |
| CN101725568A (en) * | 2009-11-20 | 2010-06-09 | 无锡杰尔压缩机有限公司 | Diffusion guide vane synchronous adjusting mechanism of high-speed centrifugal fan |
| CN103527515A (en) * | 2013-10-28 | 2014-01-22 | 无锡杰尔压缩机有限公司 | Shifting-fork-type diffusion guide vane adjusting device |
| CN204299961U (en) * | 2014-07-11 | 2015-04-29 | 无锡杰尔压缩机有限公司 | A kind of blower fan diffusion guide vane synchronous adjusting mechanism |
-
2014
- 2014-07-11 CN CN201410330903.6A patent/CN104100574A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5460484A (en) * | 1993-05-26 | 1995-10-24 | Nissan Motor Co., Ltd. | Air flow guiding mechanism for compressor inlet |
| CN101725568A (en) * | 2009-11-20 | 2010-06-09 | 无锡杰尔压缩机有限公司 | Diffusion guide vane synchronous adjusting mechanism of high-speed centrifugal fan |
| CN103527515A (en) * | 2013-10-28 | 2014-01-22 | 无锡杰尔压缩机有限公司 | Shifting-fork-type diffusion guide vane adjusting device |
| CN204299961U (en) * | 2014-07-11 | 2015-04-29 | 无锡杰尔压缩机有限公司 | A kind of blower fan diffusion guide vane synchronous adjusting mechanism |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087342A (en) * | 2018-01-16 | 2018-05-29 | 江苏杰尔科技股份有限公司 | A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure |
| CN109236750A (en) * | 2018-08-06 | 2019-01-18 | 南京磁谷科技有限公司 | A kind of adjustment structure of air intake duct and impeller concentricity |
| CN109236750B (en) * | 2018-08-06 | 2024-03-19 | 南京磁谷科技有限公司 | Adjusting structure for concentricity of air inlet channel and impeller |
| CN111852908A (en) * | 2019-04-30 | 2020-10-30 | 广东美的制冷设备有限公司 | Fan assembly and air conditioner |
| CN116557320A (en) * | 2023-06-05 | 2023-08-08 | 远东双诚风机(江苏)有限公司 | Active silencing type high-speed centrifugal fan |
| CN116557320B (en) * | 2023-06-05 | 2024-01-02 | 远东双诚风机(江苏)有限公司 | Active silencing type high-speed centrifugal fan |
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Application publication date: 20141015 |
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