CN201358961Y - Inlet prerotator and high-speed centrifugal blower therewith - Google Patents
Inlet prerotator and high-speed centrifugal blower therewith Download PDFInfo
- Publication number
- CN201358961Y CN201358961Y CNU2009200630284U CN200920063028U CN201358961Y CN 201358961 Y CN201358961 Y CN 201358961Y CN U2009200630284 U CNU2009200630284 U CN U2009200630284U CN 200920063028 U CN200920063028 U CN 200920063028U CN 201358961 Y CN201358961 Y CN 201358961Y
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- CN
- China
- Prior art keywords
- inlet
- centrifugal blower
- prerotator
- blower
- utility
- 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.)
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Abstract
The utility model discloses an inlet prerotator and a high-speed centrifugal blower therewith. The inlet prerotator comprises a diversion body and a drive element, wherein a rotating ring is arranged at the outer circle of the diversion body and provided with a plurality of transmission components, a plurality of guide vanes capable of synchronous auto rotation are arranged inside the diversion body, the shafts of all the guide vanes extend out of the diversion body and are in one-to-one connection with the transmission components, the drive element drives the rotating ring to rotate in a reciprocating manner through a swing stem component, and the blades are driven by corresponding transmission members to perform synchronous opening adjustment. In the high-speed centrifugal blower which is provided with the inlet prerotator and disclosed by the utility model, the inlet prerotator is mounted at the air inlet end of the prior centrifugal blower, and the direction of the airflow entering the impeller is enabled to perform convolution or rather prerotation by changing the vane angle of the inlet prerotator, thereby realizing performance adjustment of the blower. The utility model can ensure a wide performance regulating range and remarkable energy saving effect of the centrifugal blower.
Description
Technical field
The utility model relates to a kind of centrifugal blower that is used for conveying gas, particularly relates to a kind of inlet whirl device and brings the high speed centrifugation blower of mouthful prerotator into.
Background technique
Centrifugal blower is a kind of turbomachinery that is used for conveying gas.The drag characteristic of blower pipe network system normally changes, and guarantees blower efficient, stable operation in the variable working condition scope, requires blower to have good flow, pressure adjusting function.Existing centrifugal blower generally adopts modes such as valve throttle and frequency control of motor speed that flow is regulated.There is restriction loss in valve regulated, and influences the even of pipeline and blower interior flow field, thereby causes blower efficiency to reduce, and is therefore less economical; Though change the regulating method good economy performance of blower speed, regulation range is wide, cost is higher relatively.
The model utility content
The utility model purpose is to provide a kind of good economy performance, regulation range is wide, cost is relatively low inlet whirl device and brings a mouthful prerotator high speed centrifugation blower into.
This inlet whirl device that the utility model provides comprises a deflector, a driving element, there is a change described deflector outer ring, many dirivig members are housed in this change, be furnished with the stator of the synchronous rotation of all multipotencys in the deflector, the shaft extension of every stator goes out deflector and is connected one to one with described dirivig member respectively, described driving element passes through fork member drive change to be done back and forth to rotate, and drives corresponding blade respectively by each dirivig member and does synchronous aperture adjusting rotation.
Mouthful prerotator high speed centrifugation blower of bringing into that the utility model provides is the suction port end that above-mentioned mouthful of prerotator is installed in centrifugal blower.
The utility model inlet whirl device is by changing the aperture of stator in the inlet whirl device, the blower inlet air-flow is produced prewhirls, promptly by changing the airspeed direction that impeller sucks gas, to such an extent as to impeller changes the size of gas institute work (energy head) with the inlet whirl degree.For a specific blower, impeller to the gas institute work (claiming theoretical energy head again) of unit mass is:
h
th＝c
2u*u
2-c
1u*u
1
In the formula: c
1uThe circumference tangential-velocity component of-blade inlet air-flow;
u
1The peripheral velocity of-blade inlet (linear velocity);
c
2uThe circumference tangential-velocity component of-impeller outlet air-flow;
u
2The peripheral velocity at-impeller outlet place.
As blower speed one timing, u
1And u
2Be certain, the energy head of blower will be with the circumference tangential-velocity component c of blade inlet air-flow
1uChange and change.When prerotator blade deflection direction is consistent with the impeller sense of rotation, (just is called and prewhirls), the circumference tangential-velocity component c of blade inlet air-flow
1u＞0, energy head h
ThTo reduce; When prerotator blade deflection direction is opposite with the impeller sense of rotation, (be called negative prewhirling), c
1u＜0, energy head h
ThTo increase.The energy head increase can make pressure improve and flow increases, otherwise pressure reduction and flow are reduced.The inlet whirl device is regulated, and the blower flow is regulated in 65～105% scopes of its rating value, guarantees blower safety, smooth running when system condition changes.Compare with traditional valve regulated mode, do not have restriction loss, and the inhomogeneous problem that causes that blower efficiency reduces in flow field, valve back, having better Economy, energy-saving effect is obvious, and regulation range is wide.
Description of drawings
Fig. 1 is the structural representation of the utility model inlet whirl device.
Fig. 2 is the sectional view of Fig. 1 along the A-A line.
Fig. 3 is the structural representation that the utility model is brought the high speed centrifugation blower of mouthful prerotator into.
Embodiment
Mode of execution one, this is the mode of execution of the utility model inlet whirl device, referring to Fig. 1-Fig. 2.
From Fig. 1 and Fig. 2 as can be seen the utility model inlet whirl utensil one driving element 1, fork member 2, change 3, a deflector 4 are arranged, in deflector 4, be furnished with many stators that can rotate synchronously 5 around its central axis, stator 5 be shaped as aerofoil profile, make it good aeroperformance, flow losses are little.Having many dirivig members 6 can drive blade in the change 3 does to rotate synchronously, dirivig member 6 comprises drive link 61 and crank 62, wherein drive link is installed in the change 3, crank 62 1 ends are connected the other end and are connected with drive link 61 with stator, each drive link will drive corresponding stator 5 rotations by crank separately when change is rotated.Fork member 2 is made of a fork 21 and a connecting rod 22, wherein fork 21 is connected with dynamical element 1, and connecting rod 22 1 ends are connected with fork 21, and the other end is connected with change 3, when driving element 1 rotates, will drive fork 21 motions, and drive change 3 by fork 21 by connecting rod 22 and do back and forth to rotate.Driving element drives fork member 2 during work, drives change 3 by fork member 2 and back and forth rotates, and change 3 drives each stator 5 by dirivig member 6 and rotates, and reaches the purpose of regulating its aperture.
Mode of execution two, this is the mode of execution of the utility model high speed centrifugation blower, referring to Fig. 3, as can be seen from the figure, front-end face at the inlet ducts 7 that has centrifugal blower now has been installed mode of execution one described inlet whirl device, by changing the angle of inlet whirl device stator, realize the adjusting of blower performance, make blower adaptive system variable working condition requirement.The utility model high speed centrifugation blower is compared with existing centrifugal blower, and its property regulation scope is big, and is reliable and energy-saving effect is remarkable.In the work, when the duty parameter of system changes, the stator 5 that drives the inlet whirl device by dirivig member 6 rotates, it is transferred to corresponding angle, make impeller suck gas produce certain prewhirl, air-flow enters impeller by certain deflection direction, the merit that impeller is done gas changes with the prewhirl variation of angle of air-flow, thereby the pressure of blower and flow are changed.Adopt the inlet whirl device to regulate, the blower flow is regulated in 65～105% scopes of its rating value.
Claims (3)
1, a kind of inlet whirl device, it is characterized in that this prerotator comprises a deflector (4), one driving element (1), there is a change (3) described deflector (4) outer ring, many dirivig members (6) are housed in this change (3), be furnished with the stator (5) of the synchronous rotation of all multipotencys in the deflector (4), the shaft extension of every stator (5) goes out deflector (4) and is connected one to one with described dirivig member (6) respectively, described driving element (1) passes through a fork member (2) and drives the back and forth rotation of change (3) do, drives corresponding blade respectively by each dirivig member (6) and does synchronous aperture adjusting rotation.
2, inlet whirl device according to claim 1 is characterized in that described stator (5) is for wing.
3, a kind of centrifugal blower that has the described inlet whirl device of claim 1 is characterized in that at the suction port of centrifugal blower described inlet whirl device being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200630284U CN201358961Y (en) | 2009-01-21 | 2009-01-21 | Inlet prerotator and high-speed centrifugal blower therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200630284U CN201358961Y (en) | 2009-01-21 | 2009-01-21 | Inlet prerotator and high-speed centrifugal blower therewith |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358961Y true CN201358961Y (en) | 2009-12-09 |
Family
ID=41424724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200630284U Expired - Fee Related CN201358961Y (en) | 2009-01-21 | 2009-01-21 | Inlet prerotator and high-speed centrifugal blower therewith |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358961Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734224A (en) * | 2012-06-29 | 2012-10-17 | 无锡杰尔压缩机有限公司 | Synchronous regulating device with inlet guide blades for high-speed centrifugal fan |
| CN103423198A (en) * | 2013-08-05 | 2013-12-04 | 苏州欧拉工程技术有限公司 | Air inlet prerotator |
| CN104074805A (en) * | 2014-07-22 | 2014-10-01 | 杭州福鼎节能科技服务有限公司 | Centrifugal ventilator with dual guide vane axial leading device |
| CN111828392A (en) * | 2020-06-28 | 2020-10-27 | 宁波方太厨具有限公司 | Air inlet ring assembly, fan system and range hood |
-
2009
- 2009-01-21 CN CNU2009200630284U patent/CN201358961Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734224A (en) * | 2012-06-29 | 2012-10-17 | 无锡杰尔压缩机有限公司 | Synchronous regulating device with inlet guide blades for high-speed centrifugal fan |
| CN102734224B (en) * | 2012-06-29 | 2015-04-22 | 无锡杰尔压缩机有限公司 | Synchronous regulating device with inlet guide blades for high-speed centrifugal fan |
| CN103423198A (en) * | 2013-08-05 | 2013-12-04 | 苏州欧拉工程技术有限公司 | Air inlet prerotator |
| CN103423198B (en) * | 2013-08-05 | 2016-03-02 | 苏州欧拉工程技术有限公司 | A kind of air inlet prerotator |
| CN104074805A (en) * | 2014-07-22 | 2014-10-01 | 杭州福鼎节能科技服务有限公司 | Centrifugal ventilator with dual guide vane axial leading device |
| CN111828392A (en) * | 2020-06-28 | 2020-10-27 | 宁波方太厨具有限公司 | Air inlet ring assembly, fan system and range hood |
| CN111828392B (en) * | 2020-06-28 | 2021-07-23 | 宁波方太厨具有限公司 | Air inlet ring assembly, fan system and range hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20160121 |
|
| EXPY | Termination of patent right or utility model |