CN201786753U - Exit guide vane adjusting device for centrifugal blower - Google Patents
Exit guide vane adjusting device for centrifugal blower Download PDFInfo
- Publication number
- CN201786753U CN201786753U CN 201020527711 CN201020527711U CN201786753U CN 201786753 U CN201786753 U CN 201786753U CN 201020527711 CN201020527711 CN 201020527711 CN 201020527711 U CN201020527711 U CN 201020527711U CN 201786753 U CN201786753 U CN 201786753U
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- CN
- China
- Prior art keywords
- crank
- exit guide
- guide vane
- stator
- pressure fan
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- Expired - Lifetime
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Abstract
The utility model relates to an exit guide vane adjusting device for a centrifugal blower, which comprises a plate shell (2) and a guide vane (1); the exit guide vane adjusting device is characterized in that a crank (3), a driving ring (4) and a transmission rod (7) are also included; and the guide vane (1) is connected with the crank (3), the crank (3) is connected with the driving ring (4), and the driving ring (4) is connected with the transmission rod (7). The exit guide vane adjusting device not only retains the advantages of the vaned diffuser with small size and high efficiency on design conditions, but also changes the angle of airflow at the outlet of the diffuser due to the adjustable angle of the vane and ensures the uniformity of airflow transformation through the same setting of the guide vanes, thereby avoiding the defect of excessive efficiency decrease when in use on the variable working condition and realizing the accurate adjustment of air pressure.
Description
Technical field
The utility model relates to centrifugal bulging pressure fan, relates in particular to a kind of centrifugal bulging pressure fan exit guide blade controlling device.
Background technique
At present, centrifugal bulging pressure fan more and more is used widely in metallurgy, sewage treatment, sky grade the field.Fitness for purpose during it uses is: wish that this machine has higher efficient when working on design conditions point, and can adapt to the operating mode scope of broad.
The application target of this centrifugal bulging pressure fan, then be with gas through overcompression to obtain higher pressure.And in the use of this machine, the raising of gas pressure realizes by dual mode: a kind of is that gas obtains in impeller; Another kind is to be converted into pressure by Diffuser obtains gas in impeller kinetic energy to improve.So the design of Diffuser has crucial effects to the performance of drum pressure fan.
Existing centrifugal bulging pressure fan adopts vaneless diffuser and vaned diffuser.The structural feature of vaneless diffuser is: design has one 360 ° of annular passs behind impeller outlet, its advantage is the steady working condition wide ranges, efficient reduces still not obviously when high Mach number (Ma number), but that it exists under the design conditions work limitation rate is lower, larger-size shortcoming.Vaned diffuser then is on the passage in the vaneless diffuser structure stator of fixed angle to be installed and to be obtained, its advantage is that size is little, the work limitation rate is higher under design conditions, but the work limitation rate obviously descends under variable working condition, and causes compressor surge easily.
The model utility content
The purpose of this utility model is to provide a kind of centrifugal bulging pressure fan exit guide blade controlling device, and this device middle outlet stator is adjustable.
The purpose of this utility model is achieved in that a kind of centrifugal bulging pressure fan exit guide blade controlling device, and it comprises plate shell, stator, it is characterized in that: it also comprises crank, drives circle, kinematic link; Described stator is connected with described crank, and this crank is connected with described driving circle, and this drives circle and is connected with described kinematic link.
Above-mentioned crank passes above-mentioned plate shell, the one end connects above-mentioned stator, the other end connects above-mentioned driving circle, so just can be by adjusting to the driving circle, and then the adjusting of realization stator, in order to changing diffuser exit air-flow angle, thereby avoid appearing at the too fast shortcoming of decrease in efficiency under the variable working condition.
Above-mentioned stator is connected with described crank one end by screw, above-mentioned driving circle is connected with the described crank the other end by connecting pin, this means of fixation is simple and convenient, connect firm, and,, simultaneously crank is connected by connecting pin with stator the rotation angle of crank and stator is consistent by the connection of screw, so that can relatively rotate between this pin and the crank, and then reach the purpose of adjusting vane.
Above-mentioned driving circle is provided with attachment hole, and this attachment hole is connected with kinematic link, and then is connected with outside final controlling element by kinematic link, realizes that outside final controlling element drives kinematic link and rotates, and then drives the rotation that drives circle.
The setting of above-mentioned stator by the respective numbers crank, its all with drive circle and be connected, turn round when realizing a plurality of stator, can accurately guarantee stator conformity rotatably in the adjustment process, thereby guarantee the uniformity of air-flow conversion, its using effect the best.
The utlity model has following beneficial effect:
Centrifugal bulging pressure fan in the utility model, it adopts adjustable vane, the size that had both kept vaned diffuser is little, the high advantage of efficient under the design conditions again because blade angle is adjustable, and has changed diffuser exit air-flow angle, and the identical setting by some stators, guarantee the uniformity of air-flow conversion, thereby avoided appearing at the too fast shortcoming of Use Limitation rate decline under the variable working condition, realized the accurate adjusting of air pressure.Simultaneously, this device regulation range is wide, and good energy saving property has effectively improved the efficient of unit, and its compact structure, has avoided taking bigger space in the axial direction, has reduced the volume of compressor, and beneficial effect is remarkable.
Description of drawings
Fig. 1 is the worm's eye view of the centrifugal bulging pressure fan exit guide blade controlling device among the utility model embodiment 1;
Fig. 2 is the plan view that does not connect the centrifugal bulging pressure fan exit guide blade controlling device of kinematic link among the utility model embodiment;
Fig. 3 is the plan view of the centrifugal bulging pressure fan exit guide blade controlling device among the utility model embodiment;
Fig. 4 is the structural representation of the crank in the centrifugal bulging pressure fan exit guide blade controlling device among the utility model embodiment;
Fig. 5 is the A-A sectional view of Fig. 4;
Fig. 6 is the structural representation of the kinematic link in the centrifugal bulging pressure fan exit guide blade controlling device among the utility model embodiment;
Fig. 7 is the plan view of Fig. 6.
Embodiment
Below by embodiment the utility model is specifically described; be necessary to be pointed out that at this; following examples only are used for the utility model is further detailed; can not be interpreted as the restriction to the utility model protection domain, the person skilled in the art in this field can make some nonessential improvement and adjustment to the utility model according to above-mentioned model utility content.
Embodiment
A kind of centrifugal bulging pressure fan exit guide blade controlling device shown in Figure of description 1-7, it comprises plate shell 2, stator 1, also comprises crank 3, drives circle 4, kinematic link 7; Described stator 1 is connected with described crank 3, and this crank 3 is connected with described driving circle 4, and this drives circle 4 and is connected with described kinematic link 7; Described crank 3 passes described plate shell 2, and the one end connects described stator 1, and the other end connects described driving circle 4; Described stator 1 is connected with described crank 3 one ends by screw 5, and described driving circle 4 is connected with described crank 3 the other ends by connecting pin 6; Described driving circle 4 is provided with attachment hole 8, and this attachment hole 8 is connected with kinematic link 7; Stator 1 is set to 8, and passes through the setting of respective numbers crank 3, and it all is connected with driving circle 4.
Above-mentioned whole device is positioned at the impeller outlet place, and it is to be connected by kinematic link 7 with outside final controlling element, and an end of kinematic link 7 is fixed on the final controlling element casing, and the other end inserts and drives in the attachment hole 8 that is provided with on the circle 4.When regulating exit guide blade 1 angle, final controlling element drives kinematic link 7 rotations, and these kinematic link 7 one ends move in a circle around the other end, drives circle 4 rotations thereby drive, and drives circle 4 and further drives crank 3 rotations.By the connection of screw 5, crank 3 keeps always with stator 1 rotation angle, reaches the purpose of regulating the stator angle.
Claims (6)
1. centrifugal bulging pressure fan exit guide blade controlling device, it comprises plate shell (2), stator (1), it is characterized in that: it also comprises crank (3), drives circle (4), kinematic link (7); Described stator (1) is connected with described crank (3), and this crank (3) is connected with described driving circle (4), and this drives circle (4) and is connected with described kinematic link (7).
2. centrifugal bulging pressure fan exit guide blade controlling device as claimed in claim 1, it is characterized in that: described crank (3) passes described plate shell (2), and the one end connects described stator (1), and the other end connects described driving circle (4).
3. centrifugal bulging pressure fan exit guide blade controlling device as claimed in claim 1, it is characterized in that: described stator (1) is connected with described crank (3) one ends by screw (5), and described driving circle (4) is connected with described crank (3) the other end by connecting pin (6).
4. as claim 1,2 or 3 described centrifugal bulging pressure fan exit guide blade controlling devices, it is characterized in that: described driving circle (4) is provided with attachment hole (8), and this attachment hole (8) is connected with kinematic link (7).
5. as claim 1,2 or 3 described centrifugal bulging pressure fan exit guide blade controlling devices, it is characterized in that: described stator (1) is set to 8 at least.
6. centrifugal bulging pressure fan exit guide blade controlling device as claimed in claim 4, it is characterized in that: described stator (1) is set to 8 at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020527711 CN201786753U (en) | 2010-09-14 | 2010-09-14 | Exit guide vane adjusting device for centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020527711 CN201786753U (en) | 2010-09-14 | 2010-09-14 | Exit guide vane adjusting device for centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786753U true CN201786753U (en) | 2011-04-06 |
Family
ID=43818718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020527711 Expired - Lifetime CN201786753U (en) | 2010-09-14 | 2010-09-14 | Exit guide vane adjusting device for centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786753U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758788A (en) * | 2014-01-17 | 2014-04-30 | 南方风机股份有限公司 | Supercharging energy-saving type centrifugal fan |
| CN105756987A (en) * | 2016-04-26 | 2016-07-13 | 浙江理工大学 | Centrifugal fan device remotely controlled with Bluetooth and with blades adjustable |
-
2010
- 2010-09-14 CN CN 201020527711 patent/CN201786753U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758788A (en) * | 2014-01-17 | 2014-04-30 | 南方风机股份有限公司 | Supercharging energy-saving type centrifugal fan |
| CN105756987A (en) * | 2016-04-26 | 2016-07-13 | 浙江理工大学 | Centrifugal fan device remotely controlled with Bluetooth and with blades adjustable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |