CN102162464A - Cross flow wind wheel of sawtooth-type vanes with pits - Google Patents
Cross flow wind wheel of sawtooth-type vanes with pits Download PDFInfo
- Publication number
- CN102162464A CN102162464A CN2011101153227A CN201110115322A CN102162464A CN 102162464 A CN102162464 A CN 102162464A CN 2011101153227 A CN2011101153227 A CN 2011101153227A CN 201110115322 A CN201110115322 A CN 201110115322A CN 102162464 A CN102162464 A CN 102162464A
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- blade
- sawtooth
- tubular wine
- small rut
- wine wheel
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Abstract
The invention discloses a cross flow wind wheel of sawtooth-type vanes with pits. The wind wheel comprises a left end plate, a right end plate (2), and a plurality of vanes (1), wherein the left end plate and the right end plate are fixed on a rotary shaft; the vanes (1) are distributed along the rotary shaft axially and are clamped between the left end plate and the right end plate (2); the tailing edge of each vane (1) and/ or the leading edge of each vane (1) are provided with a plurality of vane sawteeth (11), wherein a series of pits (12) are distributed on the outer side surface of the vane sawteeth (11). According to the invention, the surface of each vane is provided with the pits which enable air to form a thin turbulent boundary layer closes to the surface of each vane tightly, and the smooth air flow flows backward along the vanes; and simultaneously, matching the sawtooth structure of the vanes, vortex generated by the tailing edge of the vanes is broken. So, air resistance and vibration can be reduced by the structure of sawtooth plus the vanes with the pits, therefore the efficiency of the fan is improved and the noise is reduced.
Description
Technical field
The present invention relates to the tubular wine wheel technical field, the particularly shape of tubular wine wheel blade, a kind of specifically tubular wine wheel that replaces original anodontia smooth blade with zigzag fashion and the blade that contains small rut.
Background technique
Tubular wine wheel is a vitals in the air-conditioning, and its fit and groundwork process are: be provided with in the housing front of indoor set and suck grid and discharge grid, they are communicated with by the ventilation channel in the housing; The indoor side heat exchanger downwind side that is positioned at ventilation channel is provided with tubular wine wheel, feasible air in suction grid suction housing is after indoor side heat exchanger carries out heat exchange, blow once more to indoor from discharging grid by tubular wine wheel again, constitute cold, warm air conditioner thus.
Referring to Fig. 1～Fig. 3, be the structural representation of tubular wine wheel.As shown in Figure 3, the blade 1 of existing tubular wine wheel is neat and shape that flush, when blower fan runs well, can produce whirlpool during the airflow passes trailing edge, and these whirlpools periodically come off from trailing edge, form Karman vortex street and (in two-dimensional flow field, place a blunt form body, be called bluff body, claim bluff body again; At bluff body flow direction rear portion, produce fluid oscillation, form the vortex that two rows alternately generate, be called Karman vortex street, be called for short vortex street).Like this, not only can influence the efficient of blower fan, and can produce vibration and noise.
At present, the tubular wine wheel optimization in Properties is mainly considered from the setting angle of blade, the variation of blade inner and outer diameter and the aspects such as even cloth of the circumferential angle of destruction blade, but all do not reached very desirable effect.
Summary of the invention
In view of this, technical problem to be solved by this invention provides a kind of tubular wine wheel of the zigzag fashion blade with small rut, can improve the efficient of blower fan and reduce fan vibration and noise.
For solving above technical problem, technological scheme provided by the invention is, a kind of tubular wine wheel of the zigzag fashion blade with small rut, and comprising: left and right end plate (2) is fixed in the rotating shaft; Multi-disc blade (1), described blade (1) is along the axial distribution of described rotating shaft and be folded between the described left and right end plate (2), the leading edge of the trailing edge of described blade (1) and/or described blade (1) is provided with some blade sawtooth (11), is distributed with serial small rut (12) on the outer surface of wherein said blade sawtooth (11).
More preferably, the tooth top (112) of each blade sawtooth (11) is gone up the one group of blade small rut (12) that distributes, and every group of small rut (12) evenly distributes.
More preferably, described blade small rut (12) is circular or square.
More preferably, the ratio of the width of the height of described blade sawtooth (11) and described blade (1) is 7%～45%, and the Angle of hook of described blade sawtooth (11) is 15 °～150 °.
More preferably, the tooth top (112) of described blade sawtooth (11) is flat tooth top, and the teeth groove (111) of described blade sawtooth (11) is a V-notch.
More preferably, described blade (1) longitudinally curves curve-like perpendicular to the cross section of described rotating shaft.
More preferably, described blade (1) longitudinally curves circular-arc perpendicular to the cross section of described rotating shaft.
More preferably, the thickness of described blade (1) dwindles to the blade afterbody gradually from root of blade.
More preferably, be provided with annular partition plate (3) between the described left and right end plate (2).
More preferably, described blade (1) comprises two groups, and wherein one group is the major diameter vane group, and another group is the small diameter blades group; Blade (1) circumferentially being interspersed in blade (1) in the described major diameter vane group and the described small diameter blades group along described rotating shaft.
Compared with prior art, tubular wine wheel of the present invention replaces original anodontia smooth blade with zigzag fashion and the blade that contains small rut, can obtain significant useful technique effect, particularly: the surface distributed of blade has small rut, these small ruts can make air form the very thin turbulent boundary layer that one deck is close to blade surface, make level and smooth air-flow walk back some along blade more; Simultaneously, cooperate the saw tooth structure of blade that the whirlpool that trailing edge produces is smashed.Therefore, sawtooth adds the pit blade structure can be reduced resistance of air, reduce vibration, thereby improves the efficient of blower fan and reduce noise.
Description of drawings
Fig. 1 a is the left view of one section blade wheel structure of tubular wine wheel;
Fig. 1 b is the front elevation of one section blade wheel structure of tubular wine wheel;
Fig. 2 is the pneumatic liquid form figure of tubular wine wheel, and gas is radially to flow to radial flow to go out impeller;
Fig. 3 a is the blade structure schematic representation of existing tubular wine wheel;
Fig. 3 b is that the A of Fig. 3 a is to schematic representation;
Fig. 4 a is the blade structure shape schematic representation of tubular wine wheel of the zigzag fashion blade of band small rut of the present invention;
Fig. 4 b is that the B of Fig. 3 a is to schematic representation.
Embodiment
Core of the present invention is to replace original anodontia smooth blade with zigzag fashion and the blade that contains small rut, to make full use of aerodynamic principle, reorganizes the type of flow of air stream when blade.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 4, and, represent a preferred embodiment of zigzag fashion blade tubular wine wheel of the present invention simultaneously in conjunction with Fig. 1, Fig. 2.The tubular wine wheel (hereinafter to be referred as tubular wine wheel) of this band saw profile of tooth blade comprises left and right end plate (end only is shown among the figure) 2 and multi-disc blade 1, and wherein: left and right end plate 2 is separately fixed in the rotating shaft (scheming not shown); All blades 1, they are respectively along the axial distribution of rotating shaft and be folded between the left and right end plate 2, and the trailing edge 13 of every blade 1 is provided with some blade sawtooth 11, and are distributed with serial small rut 12 on the outer surface of each blade sawtooth 11.
A kind of more excellent mode is, the one group of blade small rut 12 that distributes on the tooth top 112 of each blade sawtooth 11, and every group of small rut 11 evenly distributes, and wherein each blade small rut 11 is a circle or square.This small rut 12 helps making air to form the very thin turbulent boundary layer that one deck is close to blade surface, makes level and smooth air-flow along blade how be backward.
In this blade structure, the whirlpool the when small rut 12 that is positioned at trailing edge can reduce air effectively and flows through blade 1; The whirlpool that produces when simultaneously, blade sawtooth 11 can be well with the airflow passes trailing edge is smashed; Will reduce flow resistance effectively like this, also reduce noise simultaneously, improve the noise of tubular wine wheel.
As shown in Figure 4, the shape of blade sawtooth 11 is specially: the height of blade sawtooth 11 is 7%～45% with the ratio of the width of blade 1, and the Angle of hook of blade sawtooth 11 is 15 °～150 °; The tooth top 112 of blade sawtooth 11 is flat tooth top, and the teeth groove 111 of blade sawtooth 11 is a V-notch, also can adopt other shape certainly.
As shown in Figure 4, blade 1 longitudinally curves curve-like (be preferably curve circular-arc) perpendicular to the cross section of rotating shaft, and blade 1 thickness dwindles to the blade afterbody gradually from root of blade, helps keeping aerodynamic characteristic and structural strength preferably preferably.
When air-flow enters through the effect of the rotary blade leading edge (left side of zigzag fashion blade among the figure) by blade, when the airflow passes vane trailing edge, under the effect of saw tooth structure and serrated surface small rut, reduce the whirlpool of blade afterbody, simultaneously original whole air-flow is smashed, increased the disturbance of air-flow, so just air flow stream is crossed the Maelstrom that produces behind the blade and be divided into little whirlpool, reduced resistance, vibrations and noise.
In addition, also can the while be provided with some blade sawtooth 11 in the leading edge 14 of every blade 1; Like this, the saw tooth structure on the saw-toothed blade can be smashed the whirlpool that trailing edge 13 produces; The whirlpool that produces when simultaneously, saw-toothed blade also can well be with the airflow passes blade inlet edge.Certainly, also can be only blade sawtooth 11 be set in the leading edge 14 of blade 1; Working principle is identical with precedent, does not repeat them here.
The foregoing description band small rut saw tooth structure blade can be obtained significant technique effect:
(1) small rut on the saw-toothed blade 12 can make air form the very thin turbulent boundary layer that one deck is close to blade surface, reduces the whirlpool that produces at the blade afterbody;
(2) saw tooth structure that the small rut on the saw-toothed blade 12 can auxiliary blade is smashed the whirlpool that trailing edge produces;
The whirlpool that produces when (3) blade sawtooth 11 can well be with the airflow passes trailing edge is smashed;
(4) therefore, the sawtooth tubular wine wheel of band small rut can effectively reduce vibration and noise, improves the pneumatic and noiseproof feature of blower fan.
The embodiment of the invention also can be done certain replacement, illustrates now:
For example, zigzag fashion provided by the invention is flat tooth top, but the width of tooth top can be made some changes according to the tubular wine wheel of different capacity; Maybe change flat tooth into pointed tooth, and the width of teeth groove also can be done some adjustment according to different tubular wine wheels with the degree of depth.
And for example, teeth groove provided by the invention is positioned at the vane trailing edge place, but also teeth groove can be positioned at the front portion that the vane trailing edge place is arranged on blade.
Described these substitute modes all are to utilize the zigzag fashion blade to reorganize the type of flow of air stream when trailing edge, thereby are all within the claimed scope of the present invention, and promptly all tubular wine wheel saw tooth structures of not doing to change in essence all will be considered as infringement.
The present invention still can do certain improvement, for example: blade 1 is divided into two groups, wherein one group is the major diameter vane group, and another group is the small diameter blades group, and blade 1 in this major diameter vane group and the blade 1 in the small diameter blades group circumferentially interlock, evenly distribute along rotating shaft.Can make in tubular wine wheel and snail tongue leading edge and the Blower Housing gap to change, pressure wherein changes continuously, can avoid the noise of same frequency to superpose and generation resonance, thereby reduce the rotation sound, and improve tonequality.
In addition, can between left and right end plate 2, uniformly-spaced be provided with if an annular partition plate 3 is taken turns so that form more piece.Like this, can change the entire length of tubular wine wheel easily, help improving the installation precision and the stability of blade 1, improve the blower fan wind pushing performance.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim institute restricted portion.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. tubular wine wheel with the zigzag fashion blade of small rut, comprising: left and right end plate (2) is fixed in the rotating shaft; Multi-disc blade (1), described blade (1) is along the axial distribution of described rotating shaft and be folded between the described left and right end plate (2), it is characterized in that, the leading edge of the trailing edge of described blade (1) and/or described blade (1) is provided with some blade sawtooth (11), is distributed with serial small rut (12) on the outer surface of wherein said blade sawtooth (11).
2. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 1 is characterized in that, the tooth top (112) of each blade sawtooth (11) is gone up the one group of blade small rut (12) that distributes, and every group of small rut (12) evenly distributes.
3. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 1 is characterized in that, described blade small rut (12) is circular or square.
4. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 1, it is characterized in that, the ratio of the width of the height of described blade sawtooth (11) and described blade (1) is 7%～45%, and the Angle of hook of described blade sawtooth (11) is 15 °～150 °.
5. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 1 is characterized in that, the tooth top (112) of described blade sawtooth (11) is flat tooth top, and the teeth groove (111) of described blade sawtooth (11) is a V-notch.
6. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 1 is characterized in that, described blade (1) longitudinally curves curve-like perpendicular to the cross section of described rotating shaft.
7. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 6 is characterized in that, described blade (1) longitudinally curves circular-arc perpendicular to the cross section of described rotating shaft.
8. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 1 is characterized in that, the thickness of described blade (1) dwindles to the blade afterbody gradually from root of blade.
9. the tubular wine wheel of the zigzag fashion blade of band small rut as claimed in claim 1 is characterized in that, is provided with annular partition plate (3) between the described left and right end plate (2).
10. as the tubular wine wheel of the zigzag fashion blade of each described band small rut of claim 1～9, it is characterized in that described blade (1) comprises two groups, wherein one group is the major diameter vane group, and another group is the small diameter blades group; Blade (1) circumferentially being interspersed in blade (1) in the described major diameter vane group and the described small diameter blades group along described rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101153227A CN102162464A (en) | 2011-05-05 | 2011-05-05 | Cross flow wind wheel of sawtooth-type vanes with pits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101153227A CN102162464A (en) | 2011-05-05 | 2011-05-05 | Cross flow wind wheel of sawtooth-type vanes with pits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102162464A true CN102162464A (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101153227A Pending CN102162464A (en) | 2011-05-05 | 2011-05-05 | Cross flow wind wheel of sawtooth-type vanes with pits |
Country Status (1)
| Country | Link |
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| CN (1) | CN102162464A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251986A (en) * | 2011-08-26 | 2011-11-23 | 吉林大学 | Bionic centrifugal fan blade and impeller |
| CN102588339A (en) * | 2012-03-01 | 2012-07-18 | Tcl空调器(中山)有限公司 | Fan structure and axial fan |
| CN102619783A (en) * | 2012-04-18 | 2012-08-01 | 广东志高空调有限公司 | Blade structure for centrifugal fans |
| GB2497739A (en) * | 2011-12-19 | 2013-06-26 | Rolls Royce Plc | Rotor blade with serrated trailing edge |
| CN103711712A (en) * | 2012-09-28 | 2014-04-09 | 大金工业株式会社 | Blower |
| CN104913456A (en) * | 2015-06-13 | 2015-09-16 | 周国范 | Air conditioning system |
| CN105620727A (en) * | 2016-01-30 | 2016-06-01 | 中国科学院合肥物质科学研究院 | Low-noise unmanned aerial vehicle rotor wing/propeller |
| CN113432192A (en) * | 2021-06-09 | 2021-09-24 | Tcl空调器(中山)有限公司 | Sweep wind subassembly and air conditioning equipment |
| CN114962286A (en) * | 2022-06-14 | 2022-08-30 | 江西昊仁电力设备有限公司 | Cross flow cooling fan for dry type transformer |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251986A (en) * | 2011-08-26 | 2011-11-23 | 吉林大学 | Bionic centrifugal fan blade and impeller |
| GB2497739A (en) * | 2011-12-19 | 2013-06-26 | Rolls Royce Plc | Rotor blade with serrated trailing edge |
| US9951626B2 (en) | 2011-12-19 | 2018-04-24 | Rolls-Royce Plc | Noise attenuation in rotating blades |
| CN102588339B (en) * | 2012-03-01 | 2016-02-03 | Tcl空调器(中山)有限公司 | Fan structure and axial fan |
| CN102588339A (en) * | 2012-03-01 | 2012-07-18 | Tcl空调器(中山)有限公司 | Fan structure and axial fan |
| CN102619783A (en) * | 2012-04-18 | 2012-08-01 | 广东志高空调有限公司 | Blade structure for centrifugal fans |
| CN103711712A (en) * | 2012-09-28 | 2014-04-09 | 大金工业株式会社 | Blower |
| CN103711712B (en) * | 2012-09-28 | 2016-02-24 | 大金工业株式会社 | Gas fan |
| CN104913456A (en) * | 2015-06-13 | 2015-09-16 | 周国范 | Air conditioning system |
| CN105620727A (en) * | 2016-01-30 | 2016-06-01 | 中国科学院合肥物质科学研究院 | Low-noise unmanned aerial vehicle rotor wing/propeller |
| CN105620727B (en) * | 2016-01-30 | 2018-03-20 | 中国科学院合肥物质科学研究院 | A kind of low noise unmanned plane rotor/propeller |
| CN113432192A (en) * | 2021-06-09 | 2021-09-24 | Tcl空调器(中山)有限公司 | Sweep wind subassembly and air conditioning equipment |
| CN113432192B (en) * | 2021-06-09 | 2022-09-02 | Tcl空调器(中山)有限公司 | Sweep wind subassembly and air conditioning equipment |
| CN114962286A (en) * | 2022-06-14 | 2022-08-30 | 江西昊仁电力设备有限公司 | Cross flow cooling fan for dry type transformer |
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Application publication date: 20110824 |
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| RJ01 | Rejection of invention patent application after publication |