CN2297569Y - Middle-high voltage quasi-ternary energy-saving centrifugal fan with single-plate vane - Google Patents
Middle-high voltage quasi-ternary energy-saving centrifugal fan with single-plate vane Download PDFInfo
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- CN2297569Y CN2297569Y CN 96242710 CN96242710U CN2297569Y CN 2297569 Y CN2297569 Y CN 2297569Y CN 96242710 CN96242710 CN 96242710 CN 96242710 U CN96242710 U CN 96242710U CN 2297569 Y CN2297569 Y CN 2297569Y
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Abstract
The utility model relates to a middle and high voltage quasi-ternary energy saving centrifugal fan with a single-plate vane, which is provided with an impeller and a spiral case which are designed according to the quasi-ternary viscous flow theory. An amplitude angle of the separating and combining surface of an upper and a lower halves of the spiral case is 135 DEG with convenient maintenance. Compared with an old type fan, the efficiency of the utility model is enhanced by 2% to 4%, the wind rate is correspondingly enhanced by 3% to 5%, the internal pressure is correspondingly increased by 5%, the aerodynamic noise is reduced by 3 d B (A), and the characteristic curve is horizontally extended by 4% to 8%. A blade pressure surface according to the stream line of air stream is in a spatial twisting type, and can be stuck with a wear resistant metal layer, and the service life is extended by 2 to 2.5 times. The utility model is suitable for the air blasting, the air inducing and dust removing of power boilers, building materials, metallurgy and kilns, and has the advantages of energy saving, noise pollution lowering, operating cost lowering, production safety enhancing and easy maintenance.
Description
The utility model technical field belongs to centrifugal fan, the accurate ternary veneer of particularly a kind of middle and high pressure blade centrifugal fan.
Current dedusting and stove commonly used from anti-formula induced draught fan and blower, the blade of its impeller is dull and stereotyped profile or cylinder profile, very easily concentrated wear, pneumatic efficiency is low, the noise height, lack working life.The spiral case of blower fan and transmission device are installed separately on concrete foundation, break down to be difficult for whole replacing fast, also are difficult to maintenance.
The utility model provides a kind of centrifugal fan of accurate ternary blade, and air ventilation of its impeller and spiral case are according to accurate ternary viscous flow Design Theory, and the streamline that blade profile is complied with air-flow is the veneer meander configuration, makes blower fan that higher efficient be arranged, for ease of maintenaince.
The utility model is finished with following mode: the centrifugal energy-saving fan of a kind of middle and high pressure accurate ternary veneer blade, it is made of support, driving mechanism, spiral case, impeller, air intake slip ring and louver, spiral case divides upper and lower two, its deciliter face argument is 125 ° of-140 ° of angles, driving mechanism and spiral case attach together on same base, accurate ternary veneer blade is housed on the impeller, and the profile of this blade is that the streamline of complying with air-flow is the spatial warping type, 7 ° of-12 ° of angles of spatial warping scope.Louver is the guiding register, its inlet diameter be impeller carry out mouthful diameter 1.3-1.5 doubly, or the band register is 90 ° inlet box basically, its wind-guiding turning angle α
1About 140 ° of angles.The middle inlet angle β that presses the accurate ternary veneer blade of the centrifugal energy-saving fan of accurate ternary veneer blade
1=20 °-23 °, exit angle β
2=28 °-32 °, 8 ° of-12 ° of angles of spatial warping scope.The inlet section of the accurate ternary veneer blade of the centrifugal energy-saving fan of high pressure accurate ternary veneer blade is divided into distortion board-type face, inlet angle β
1=23 ° of-27 ° of angles, the spatial warping scope is 7 °-12 °, it is antecurvature that blade exit partly is camber, the radius of curvature r of arc
2Be the impeller outlet diameter 0.18-0.25 doubly, exit angle β
2=75 ° of-85 ° of angles.The radius of curvature r of the shrouding disc of impeller be impeller outlet diameter 0.15-0.25 doubly.The quantity of accurate ternary veneer blade is the 10-16 sheet.Do the induced draught fan time spent, the antifriction metal (AFM) layer on the pressure side surface of its veneer blade.The impeller outlet place of middle and high pressure fan disposes the rotation vaneless diffuser.
This blower fan is owing to adopt unsplit bedplate 1, and promptly the driving mechanism of motor 2, coupling 3, bearing support 4 compositions is contained on the same base 1 with blower fan.When handling failure, be easy to rapid complete machine and change, shorten the handling failure time.The spiral case of this blower fan is owing to be divided into upper and lower two halves, and is equipped with deciliter face of 125 ° of-140 ° of arguments, under the situation of motionless spiral case main body and inlet/outlet airduct, can vertically hang out impeller from spiral case, convenient maintenance and comprehensive repair time.The blade of impeller is improved to the spatial warping profile that is designed to comply with the air-flow streamline by accurate ternary viscous flow theory from old-fashioned board-type face or cylinder profile, blade import impact loss is reduced, flow losses in the flow losses of Ye Daozhong and the spiral case behind the impeller also reduce thereupon, thereby the corresponding raising of the pneumatic efficiency of blower fan 2-4%, air quantity improves 3-5%, blast improves 5%, aerodynamic noise reduces 3dB (A), characteristic smooth range expansion 4-8%, because blade profile is to comply with the flow line uniform wear, and post one deck antifriction metal (AFM) at blade pressure surface, make prolong 2-2.5 doubly the working life of impeller, be suitable for utility boiler, building materials, metallurgical, the air blast of stove, air inducing and air inducing dedusting are played energy-conservation, reduce noise pollution, reduce operating cost, strengthen production safety and be easy to effect such as Maintenance and Repair.
The centrifugal energy-saving fan plan view of the accurate ternary veneer of the middle and high pressure of Fig. 1 blade.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is 90 ° of inlet box schematic representation of the utility model band register.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the utility model Middle pressure draught fan impeller ssembly drawing.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the utility model high pressure positive blower impeller ssembly drawing.
Fig. 9 is the left view of Fig. 8.
Now the utility model is described in further detail in conjunction with above-mentioned accompanying drawing:
The centrifugal energy-saving fan of the accurate ternary veneer of middle and high pressure blade is made of base 1, motor 2, coupling 3, bearing support 4, spiral case 5, impeller 6, air intake slip ring 7 and louver 8.Louver 8 has two kinds of structures to select for the user.A kind of is guiding register shown in Figure 3, its inlet diameter be impeller 6 inlet diameter 1.3-1.5 doubly, simple and reliable for structure, can under the condition of not stopping, manually or automatically regulate, but occupied ground be bigger.Another kind be band register shown in Figure 4 be 90 ° inlet box 9 basically, its top is register, the bottom is an inlet box, its wind-guiding turning angle α
1About 80 °, wind-guiding turning angle α
2About 140 °, the air-flow commentaries on classics is bent for 90 ° in the inlet box, and flow pattern is even quiet, and air dynamic behaviour improves, and compares with the inlet box of other same-actions, and the former efficient will exceed 4%, and occupied ground is economized, and can save investment.
Impeller 6 has two kinds of structures: a kind of is to press impeller 6, the inlet angle β of its blade 11 among the Figure 6 and Figure 7
1Be 20 °-23 °, exit angle β
2Be 28 °-32 °, 8 ° of-12 ° of angles of spatial warping, the number of blade is the 10-16 sheet.Another kind is Fig. 8 and high-pressure impeller 6 shown in Figure 9, and wherein the inlet part of blade 11 is distortion board-type face, import β
1Be 23 °-27 °, 7 °-12 ° of spatial warpings, it is antecurvature that blade 11 exit portion are camber, the radius of curvature r of arc
2Be impeller 6 outlet diameters 0.18-0.25 doubly, exit angle β
2Be 75 °-85 °, blade 11 numbers are the 10-16 sheet.The radius of curvature r of the shrouding disc 15 of these two kinds of impellers, for the 0.15-0.25 of impeller outlet diameter doubly.The exit portion of these two kinds of impellers 6 all disposes the revolution vaneless diffuser, the dynamic pressure that will export that can be more is converted into static pressure with less loss, make the pneumatic efficiency of impeller 6 increase by 2%, the range of flow and the pressure range in the district of economic work simultaneously all have expansion, and it is smooth that characteristic curve more is tending towards.The wheel disc 10 usefulness bolts of these two kinds of impellers are assembled on the awl arc core wheel 12, and core wheel is assembled on the transmission shaft 14 with flat key 13.
The blower fan of producing with present technique has following class: air quantity is at 10000-100000 rice
3/ time, 110000-300000 rice
3/ time, 310000-600000 rice
3/ time.Blast is at 180-250mmH
2O, 260-350mmH
2O, 360-550mmH
2O is suitable for the air blast and the purposes such as air inducing and air inducing dedusting of utility boiler, building materials and metallurgical furnace kiln.
Claims (8)
1. centrifugal energy-saving fan of the accurate ternary veneer of middle and high pressure blade, it is made of support, driving mechanism, spiral case, impeller, air intake slip ring and louver, spiral case divides upper and lower two, its deciliter face argument is 125 ° of-140 ° of angles, it is characterized in that driving mechanism and spiral case [5] attach together on same base [1], accurate ternary veneer blade [11] is housed on the impeller [6], and the profile of this blade is that the streamline of complying with air-flow is the spatial warping type, 7 ° of-12 ° of angles of spatial warping scope.
2. according to the described energy-saving fan of claim 1, it is characterized in that louver is a guiding register [8], its inlet diameter be impeller [6] carry out mouthful diameter 1.3-1.5 doubly, or the band register is 90 ° inlet box [9] basically, its wind-guiding turning angle α
1About 140 ° of angles.
3. according to the described blower fan of claim 1, press the inlet angle β of the accurate ternary veneer blade [11] of the centrifugal energy-saving fan of accurate ternary veneer blade in it is characterized in that
1=20 °-23 °, exit angle β
2=28 °-32 °, 8 ° of-12 ° of angles of spatial warping scope.
4. according to the described blower fan of claim 1, it is characterized in that the inlet section of the accurate ternary veneer blade [11] of the centrifugal energy-saving fan of high pressure accurate ternary veneer blade is divided into distortion board-type face, inlet angle β
1=23 ° of-27 ° of angles, the spatial warping scope is 7 °-12 °, it is antecurvature that blade exit partly is camber, the radius of curvature r of arc
2Be impeller [6] outlet diameter 0.18-0.25 doubly, exit angle β
2=75 °--85 ° of angles.
5. according to the described energy-saving fan of claim 1, the radius of curvature r that it is characterized in that the shrouding disc [15] of impeller [6] be impeller [6] outlet diameter 0.15-0.25 doubly.
6. according to the described energy-saving fan of claim 1, its spy is that the quantity of accurate ternary veneer blade [11] is the 10-16 sheet.
7. according to the described energy-saving fan of claim 1, it is characterized in that doing the induced draught fan time spent, there is the antifriction metal (AFM) layer on the pressure side surface of its veneer blade [11].
8. according to the described energy-saving fan of claim 1, it is characterized in that impeller [6] outlet port of middle and high pressure fan disposes the rotation vaneless diffuser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242710 CN2297569Y (en) | 1996-12-25 | 1996-12-25 | Middle-high voltage quasi-ternary energy-saving centrifugal fan with single-plate vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242710 CN2297569Y (en) | 1996-12-25 | 1996-12-25 | Middle-high voltage quasi-ternary energy-saving centrifugal fan with single-plate vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2297569Y true CN2297569Y (en) | 1998-11-18 |
Family
ID=33916707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96242710 Expired - Fee Related CN2297569Y (en) | 1996-12-25 | 1996-12-25 | Middle-high voltage quasi-ternary energy-saving centrifugal fan with single-plate vane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2297569Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162473A (en) * | 2010-02-15 | 2011-08-24 | 株式会社牧田 | Blower |
| CN102815537A (en) * | 2012-08-30 | 2012-12-12 | 浙江兴益风机电器有限公司 | Novel centrifugal fan |
| CN103603827A (en) * | 2013-11-20 | 2014-02-26 | 常山卫邦风机有限公司 | Centrifugal fan impeller structure and production method |
| CN107642491A (en) * | 2017-11-02 | 2018-01-30 | 洛阳北玻台信风机技术有限责任公司 | Motor-car, the cooling of high ferro tractive transformer fluidize centrifugal blower with ternary |
-
1996
- 1996-12-25 CN CN 96242710 patent/CN2297569Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162473A (en) * | 2010-02-15 | 2011-08-24 | 株式会社牧田 | Blower |
| CN102815537A (en) * | 2012-08-30 | 2012-12-12 | 浙江兴益风机电器有限公司 | Novel centrifugal fan |
| CN103603827A (en) * | 2013-11-20 | 2014-02-26 | 常山卫邦风机有限公司 | Centrifugal fan impeller structure and production method |
| CN107642491A (en) * | 2017-11-02 | 2018-01-30 | 洛阳北玻台信风机技术有限责任公司 | Motor-car, the cooling of high ferro tractive transformer fluidize centrifugal blower with ternary |
| CN107642491B (en) * | 2017-11-02 | 2024-03-12 | 洛阳北玻三元流风机技术有限公司 | Ternary fluidization centrifugal fan for cooling motor car and high-speed rail traction transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |