CN2527761Y - Forward bending twisted plate type axial flow fan blade - Google Patents
Forward bending twisted plate type axial flow fan blade Download PDFInfo
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- CN2527761Y CN2527761Y CN 01275301 CN01275301U CN2527761Y CN 2527761 Y CN2527761 Y CN 2527761Y CN 01275301 CN01275301 CN 01275301 CN 01275301 U CN01275301 U CN 01275301U CN 2527761 Y CN2527761 Y CN 2527761Y
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- flow fan
- axial flow
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- forward bent
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- 238000005452 bending Methods 0.000 title claims description 9
- 238000003466 welding Methods 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
Disclosed is a forward skewed swept warped plate type axial-flow fan impeller which consists of three parts, namely, vanes (1), hubs (2) and shaft housings (3). The utility model is characterized in that the vane takes the shape that the outside section of the axis is skewed towards the rotation direction and the root of the axis is a straight line; the vane (1) is of a warped plate type; the fastening connection ways between the hubs (2) and the vanes (1) include injection molding, welding connection, riveting, bond conglutination and bolt connection; the shaft housing (3) is lined at the axial-symmetric center inside the hub (2) for matching with a motor providing power to the impeller. The axial-flow fan impeller provided in the utility model has the evident advantages of high efficiency, low noise and low cost.
Description
The utility model belongs to field of fluid machinery, especially relate to the impeller in the big flow axis flow fan of low blast in the blower fan field, be widely used in air-cooled air-conditioning unit cooling heat extraction, motor car engine cooling, pipe ventilated, cooling tower ventilation and all kinds of local ventilation occasion.
Blower fan be will rotation mechanical energy convert gas pressure energy and kinetic energy to, and the general machinery equipment that gas delivery is gone out; Axial-flow blower refers to convert the mechanical energy of rotation to gas pressure energy and kinetic energy, and gas is axially introduced by blower fan and the machinery from axially transferring out.The every field of national economy has almost been contained in the use of blower fan, and in China, the power consumption of blower fan has accounted for about 10% of national economy total electricity consumption, wherein the higher proportion of axial-flow blower occupation ratio.In long-term application practice, people feel existing low, the defectives such as noise is big, cost is high, complex process of axial-flow blower ubiquity efficient deeply, energy waste that causes thus and noise pollution are surprising, yet the main cause that causes the above-mentioned defective of blower fan be to draught fan impeller particularly the blade profile design of blade also have defective, so invention high efficiency, low noise, axial flow fan vane wheel will have remarkable social benefit and economic benefit cheaply.
Blower fan reduction noise, the key technology of raising the efficiency are blade.At present, in known axial-flow blower, blade generally adopts airfoil blade and twisted shape blade two big classes.Be to reduce fan noise, improve fan efficiency, existing multinomial about the technological scheme application that improves blade national patent.The Chinese patent that the designer has announced " antecurvature sweepforward assembly type the axial-flow blower " (patent No.: ZL95244262.0) proposed blade section and be airfoil, axis of runner blade is to ten chip technology schemes of blower fan sense of rotation bending, efficiency and noise index have been improved preferably, Fig. 1 is the blade plane projection drawing of this technological scheme, wherein blade top left the arrow of direction represent the sense of rotation of blower fan.Airfoil blade adopt usually Fig. 2 (a) with (b) shown in solid airfoil blade, the technological scheme that adopts the hollow machine air-foil blade is also arranged in addition, but complex-shaped airfoil blade generally can only adopt forging type or steel plate compacting gang welding mode to process, its processing technology complexity, product weight is big, and cost is higher.For reducing blower fan deadweight and cost, improve the processed complex degree, the designer is at Chinese patent " antecurvature sweepforward plate type shaft flow fan " (application number: announced ZL01217592.7) that a kind of axis of runner blade is to the plate blade technology scheme of the antecurvature sweepforward of blower fan sense of rotation bending, its blade plane projection drawing is identical with Fig. 1, but the cross section of blade is plate, reduce the weight and the cost of blower fan, simplified difficulty of processing.But because above-mentioned two kinds of scheme root of blade axis are circular arc, can produce an outside radial component, this will strengthen the outside degrees of offset of root streamline, certainly will worsen the flow condition of root, also not reach desirable noise and efficiency index.
For solving the contradiction between efficient, noise and the cost factor better, the utility model proposes the technological scheme of the axial flow fan vane wheel that adopts the forward bent and twisted contour blade.
Axial flow fan vane wheel provided by the utility model comprises blade, wheel hub, three parts of axle sleeve.It is characterized in that blade adopt axis of runner blade outside the section part to the sense of rotation bending and root is the leaf of straight line; Blade is a twisted board shape; Wheel hub is that integral cast, welding, riveted joint, binder adhesion and bolt are connected with the form of being fastenedly connected between the blade; Be lining in the axisymmetric center portion of wheel hub in the axle sleeve, be used for and provide the motor of impeller power to assemble.
Below in conjunction with the drawings and the specific embodiments technical characteristics of the present utility model further is described.
Fig. 1 is " antecurvature sweepforward assembly type axial-flow blower " (patent No.: ZL95244262.0) reach " antecurvature sweepforward plate type shaft flow fan " (application number: blade plane projection drawing ZL01217592.7).
Fig. 2 is " antecurvature sweepforward assembly type axial-flow blower " (patent No.: ZL95244262.0) blade partial cross section plane outspread drawing.
Fig. 3 is the front view of axial flow fan vane wheel with forward bent and twisted contour.
Fig. 4 is the left view of axial flow fan vane wheel with forward bent and twisted contour.
Fig. 5 is a forward bent and twisted contour blade plane projection drawing.
Fig. 6 is the left view of forward bent and twisted contour blade plane projection drawing.
Fig. 7 is partial cross section's plane outspread drawing in the forward bent and twisted contour blade plane projection drawing.
Fig. 8 is axial flow fan vane wheel with forward bent and twisted contour axle sleeve structure figure.
Among above-mentioned Fig. 1, Fig. 3, Fig. 6 blade top left the arrow of direction represent the sense of rotation of blower fan.
The structure of the axial flow fan vane wheel with forward bent and twisted contour that the utility model proposes as shown in Figure 3, Figure 4, this impeller is made of blade 1, wheel hub 2, axle sleeve 3 three parts.Adopt integral cast, welding, riveted joint, binder adhesion and bolt mode to be connected between blade 1 and the wheel hub 2, air quantity, blast index difference according to actual use occasion, the quantity of blade 1 is got between the 3-8 sheet, and blade 1 can be sheet metal, engineering plastics or glass fibre reinforced plastics with the material of wheel hub 2.
In Fig. 1 and the described blade wheel structure of Fig. 2, axle sleeve 3 is positioned at the axisymmetric center portion of wheel hub 2, adopts in the drive fit mode liner wheel hub 2.As shown in Figure 5, in the axle sleeve 3 keyway is arranged, be used for being connected, to be assembled into complete blower fan with the motor reel of power is provided to blower fan.
The distortion plate vane 1 that the utility model adopts, the sectional shape with comparison rule, so processing technology is simple, and in light weight, reduced cost of material and processing cost significantly.
The parameter of the utility model axial flow fan vane wheel is:
Specific speed n
s=200-272 pressure coefficient P=0.075-0.13
Flow coefficient Q=0.22-0.30 hub ratio v=0.25-0.35 (v=d/D)
Blower fan reduction noise, the key of raising the efficiency are the shape of blade.The forward bent and twisted contour blade shape that the utility model proposes such as Fig. 6, Fig. 7, shown in Figure 8.Fig. 6 is a forward bent and twisted contour blade plane projection drawing; Fig. 7 is the left view of plane figure; Fig. 8 is a plane figure F-F sectional plane unfolded drawing.Wherein auxiliary description line a-a, b-b, c-c, d-d, e-e, f-f, g-g, h-h, i-i, j-j, k-k, l-l, m-m and the axes O-O among Fig. 6 and Fig. 7 is one to one.
In Fig. 6, Fig. 7, the outer section of axes O-O is a circular curve, and its circular arc radius of curvature is r, and root is a straight line; The auxiliary description of curved surface line a-a, b-b ..., the m-m line is the disparity curvature curve, and the root portion curve keeps similar asymptotic relation to axes O-O, outer section part curve keeps similar with axes O-O and gradually far concerns.D is an impeller outer diameter, and d is the wheel hub external diameter.In Fig. 8, u is the established angle in F-F cross section, and L is a chord length, and R is a radius of curvature, and y* is the position of cross-sectional axis, and b is a vane thickness.
In the big flow axis flow fan of low blast, in order to increase the area of circulation part, the hub ratio of blower fan (V=d/D)-as all obtain smaller (V=d/D≤0.3, d is a hub diameter in the formula, D is an impeller outer diameter).In this case, assign to transmit energy in order to reduce by ten degreeof tortuosity and to make full use of the bigger blade part of outer radius linear velocity, usually adopt the littler change circular rector design of index, this will increase streamline degrees of offset from inside to outside in the impeller, at root of blade axis circular arc place, can produce an outside radial component, thereby increase the secondary flow loss of blade outer radius greatly.At this defective in the utility model, adopted axis of runner blade outside section part to the sense of rotation bending and root is the leaf of straight line, thereby reduce the secondary flow loss of blade outer radius, increase substantially the efficient of blower fan.
As Fig. 6, shown in Figure 7, the forward bent and twisted contour blade has adopted axis of runner blade, and section part is to the sense of rotation bending and root is the leaf of straight line outside, and promptly axes O-O section blade outside is located to the sense of rotation bending, and radius of curvature is r; At root of blade, axes O-O is a straight line.Because the root axis is a straight line, blade can not produce an additional radial component, evenly the working surface gas pressure distribute, reduced working surface gas secondary flow loss, improved the gas flow situation of root greatly, improve the efficiency of blower fan, overcome pressure pulsation and the eddy current crack that produces.Therefore, for the big air quantity of low pressure, the less axial-flow blower of hub ratio, adopt axis of runner blade outside section reduce noise to the sense of rotation bending and root is the leaf performance that can improve and improve axial-flow blower largely of straight line, raise the efficiency.
The beneficial effects of the utility model are, the axial-flow blower that adopts the axial flow fan vane wheel of the forward bent and twisted contour blade that this technological scheme proposes to assemble out has high efficiency, low noise, distinguishing feature cheaply.
The utility model has been obtained good effect.With air quantity 12000m
3/ h, the axial-flow blower of total head 75pa are example, and parameter of the present utility model is: the blade quantity of impeller is 6, and impeller diameter 700mm, rotating speed are 550rpm, its noise 61dB (A), and efficient 85%, than A sound level 20.3, adapted power of motor 375w.And the best axial-flow blower parameter of performance is in the prior art: noise 65dB (A), and efficient 79%, than A sound level 23.7, adapted power of motor 550w.This shows, the utlity model has efficient height, noise is low, cost is low remarkable advantage, have obvious social and economic benefit.
Claims (8)
1. axial flow fan vane wheel with forward bent and twisted contour, it comprises blade (1), wheel hub (2), axle sleeve (3) three parts; It is characterized in that blade (1) adopt axis of runner blade outside the section part to the sense of rotation bending and root is the leaf of straight line.
2. axial flow fan vane wheel with forward bent and twisted contour according to claim 1 is characterized in that: blade (1) is a twisted board shape.
3. axial flow fan vane wheel with forward bent and twisted contour according to claim 1 is characterized in that: the quantity that is fastenedly connected the blade (1) on wheel hub (2) is 3 to 8.
4. axial flow fan vane wheel with forward bent and twisted contour according to claim 1 is characterized in that: the form of being fastenedly connected between wheel hub (2) and the blade (1) is the integral cast mode.
5. axial flow fan vane wheel with forward bent and twisted contour according to claim 1 is characterized in that: the form of being fastenedly connected between wheel hub (2) and the blade (1) is a welding manner.
6. axial flow fan vane wheel with forward bent and twisted contour according to claim 1 is characterized in that: the form of being fastenedly connected between wheel hub (2) and the blade (1) is the riveted joint mode.
7. axial flow fan vane wheel with forward bent and twisted contour according to claim 1 is characterized in that: the form of being fastenedly connected between wheel hub (2) and the blade (1) is a binder adhesion mode.
8. axial flow fan vane wheel with forward bent and twisted contour according to claim 1 is characterized in that: the form of being fastenedly connected between wheel hub (2) and the blade (1) is a bolt connecting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275301 CN2527761Y (en) | 2001-11-27 | 2001-11-27 | Forward bending twisted plate type axial flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275301 CN2527761Y (en) | 2001-11-27 | 2001-11-27 | Forward bending twisted plate type axial flow fan blade |
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| Publication Number | Publication Date |
|---|---|
| CN2527761Y true CN2527761Y (en) | 2002-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01275301 Expired - Fee Related CN2527761Y (en) | 2001-11-27 | 2001-11-27 | Forward bending twisted plate type axial flow fan blade |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357610C (en) * | 2003-03-28 | 2007-12-26 | 中国科学院工程热物理研究所 | Axial ventilating machine impellor |
| CN102758793A (en) * | 2012-07-25 | 2012-10-31 | 佛山市盈赛机械设备有限公司 | Fan blade and axial flow fan with fan blade of air conditioner |
| WO2013132113A1 (en) * | 2012-03-07 | 2013-09-12 | Talleres Zitrón, S.A. | Fan impellers and method for producing fan impellers |
| CN104295527A (en) * | 2014-10-08 | 2015-01-21 | 珠海格力电器股份有限公司 | Wing type fan blade and fan |
| CN107269471A (en) * | 2017-08-15 | 2017-10-20 | 江苏帝姆斯制冷设备有限公司 | Fan blade kludge and fan blade assemble method |
-
2001
- 2001-11-27 CN CN 01275301 patent/CN2527761Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357610C (en) * | 2003-03-28 | 2007-12-26 | 中国科学院工程热物理研究所 | Axial ventilating machine impellor |
| WO2013132113A1 (en) * | 2012-03-07 | 2013-09-12 | Talleres Zitrón, S.A. | Fan impellers and method for producing fan impellers |
| CN102758793A (en) * | 2012-07-25 | 2012-10-31 | 佛山市盈赛机械设备有限公司 | Fan blade and axial flow fan with fan blade of air conditioner |
| CN104295527A (en) * | 2014-10-08 | 2015-01-21 | 珠海格力电器股份有限公司 | Wing type fan blade and fan |
| CN107269471A (en) * | 2017-08-15 | 2017-10-20 | 江苏帝姆斯制冷设备有限公司 | Fan blade kludge and fan blade assemble method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: 218, HANGCEZHAODAI INSTITUTE, NO. 29, XUE YARD ROA Free format text: FORMER NAME OR ADDRESS: ROOM 109, SHENGDIXIEZI HOUSE, NO. 29, XUE YARD ROAD, HAIDIAN DISTRICT, BEIJING CITY |
|
| CP03 | Change of name, title or address |
Patentee address after: No. 29, Zhang Xiaoling, Xueyuan Road, Beijing, Haidian District, 218 Patentee address before: Room 109, office building, No. 29, Xueyuan Road, Beijing, Haidian District, Zhang Xiaoling |
|
| ASS | Succession or assignment of patent right |
Owner name: MA ZHANFEI Free format text: FORMER OWNER: SENBOYUAN SCIENCE + TECHNOLOGY CO., LTD., BEIJING Effective date: 20060623 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060623 Address after: 225400 No. 68 South Ping Road, Jiangsu, Taixing Patentee after: Ma Zhanfei Address before: 100083 Beijing 218, Xueyuan Road, Haidian District, 29, Zhang Xiaoling Patentee before: SENBOYUAN SCIENCE AND TECHNOLO |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HAYE(Shanghai) Refrigeration Machinery Co.,Ltd. Assignor: Ma Zhanfei Contract fulfillment period: 2008.2.1 to 2013.2.1 Contract record no.: 2009310000094 Denomination of utility model: Axial flow fan vane wheel with forward bent and twisted contour Granted publication date: 20021225 License type: Exclusive license Record date: 20090616 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.2.1 TO 2013.2.1; CHANGE OF CONTRACT Name of requester: SHANGHAI HONYER REFRIGERATING MACHINERY CO., LTD. Effective date: 20090616 |
|
| DD01 | Delivery of document by public notice |
Addressee: Ma Zhanfei Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Ma Zhanfei Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021225 Termination date: 20101127 |