CN105240316A - Axial flow blade, axial flow fan and air conditioner - Google Patents
Axial flow blade, axial flow fan and air conditioner Download PDFInfo
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- CN105240316A CN105240316A CN201510655692.8A CN201510655692A CN105240316A CN 105240316 A CN105240316 A CN 105240316A CN 201510655692 A CN201510655692 A CN 201510655692A CN 105240316 A CN105240316 A CN 105240316A
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- flow leaf
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Abstract
The invention discloses an axial flow blade, an axial flow fan and an air conditioner. The axial flow blade comprises a hub (1), outer blades (2) fixedly arranged at the periphery of the hub (1) in the peripheral direction of the hub (1), a rotating shaft (3) arranged in the hub (1), and inner blades (4) fixedly connected between the rotating shaft (3) and the hub (1) and arranged in the peripheral direction of the hub (1). According to the axial flow blade, the acting capacity of the axial flow blade can be enhanced, and the air volume and the blade structure utilization rate is increased.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of axial-flow leaf, axial-flow blower and air conditioner.
Background technique
Axial-flow leaf is as one of the vitals of the air-cooled heat exchange of air conditioner room outdoor, and its performance directly affects air conditioner performance.Under the prerequisite ensureing exchange capability of heat, complete machine efficiency, reduce outdoor unit size and can reduce costs, improve product competitiveness in the market.How to make full use of axial-flow leaf structure, improve the noise of axial-flow leaf, aeroperformance has become axial-flow leaf design, an important topic that researcher is urgently to be resolved hurrily.
Axial-flow leaf artificer generally got the lower limit of hub ratio when designing fan blade is in the past 0.25.Because too little hub ratio can cause root of blade air turbulence degree to strengthen, and the intensity of fan blade cannot be met.Simultaneously due to the angle from fan blade intensity, artificer generally can arrange disk in hub positions.Therefore, before and after hub portion, air-flow blocks, and also just causes axial-flow leaf wheel hub structure (more than 0.25 times of fan blade radius) not possess acting ability.In addition, there is backflow to a certain degree in wheel hub downstream area, the backflow whirlpool of formation easily produces noise.Although the cylindrical shape that artificer changes wheel hub external wind wheel side by means such as withdrawing patterns improves this situation, have little effect.In a word, can be summarized as following some:
1) wind impeller boss part " zero " acting substantially;
2) there is air-flow chaotic Phenomena in various degree near wheel hub upstream and downstream, easily produce noise;
3) general motor is arranged on the upstream position of fan blade and close together, and it can exist the not smooth hidden danger of heat radiation.
Summary of the invention
A kind of axial-flow leaf, axial-flow blower and air conditioner are provided in the embodiment of the present invention, the acting ability of axial-flow leaf can be increased, improve air quantity and blade structure utilization ratio.
For achieving the above object, the embodiment of the present invention provides a kind of axial-flow leaf, comprising: wheel hub; External wind wheel, the circumference along wheel hub is fixedly installed on the periphery of wheel hub; Rotating shaft, is arranged in wheel hub; Interior fan blade, is fixedly connected between rotating shaft and wheel hub, and along wheel hub circumferentially.
As preferably, the first end of interior fan blade is fixedly connected on the periphery of rotating shaft, and the second end is fixedly connected on the inner circumferential of wheel hub.
As preferably, wheel hub and rotating shaft are coaxially arranged.
As preferably, the outer edge radius of interior fan blade is 0.1R to R1, and wherein R is the outer edge radius of external wind wheel, and R1 is the internal diameter of wheel hub, and the scope of R1 is 0.25R to 0.4R.
As preferably, the blade quantity of interior fan blade is the non-integral multiple of external wind wheel blade quantity.
As preferably, the blade quantity of interior fan blade is Z to 3Z, and wherein Z is external wind wheel blade quantity.
As preferably, the setting angle of interior fan blade is 10 to 35 degree.
As preferably, the trailing edge of interior fan blade is flexuose, wavy or S shape.
As preferably, interior fan blade is frontal arc, backward bending or radially bend.
As preferably, the blade profile of interior fan blade is the thicker such as thicker, flat board such as the thicker such as circular arc, circular arc be non-, dull and stereotyped thicker or the aerofoil profile such as non-.
According to a further aspect in the invention, provide a kind of axial-flow blower, comprise axial-flow leaf, this axial-flow leaf is above-mentioned axial-flow leaf.
In accordance with a further aspect of the present invention, provide a kind of air conditioner, comprise axial-flow blower, this axial-flow blower is above-mentioned axial-flow blower.
Apply technological scheme of the present invention, axial-flow leaf comprises: wheel hub; External wind wheel, the circumference along wheel hub is fixedly installed on the periphery of wheel hub; Rotating shaft, is arranged in wheel hub; Interior fan blade, is fixedly connected between rotating shaft and wheel hub, and along wheel hub circumferentially.This axial-flow leaf comprises interior fan blade and external wind wheel, remove the disc structure that wheel hub is original had, interior fan blade is arranged in wheel hub, by interior fan blade, original wheel hub is changed into style of opening by enclosed type, thus can be done work by interior fan blade, the acting ability of axial-flow leaf can be increased, improve the utilization ratio of air quantity and blade structure, and the eddy current improved near wheel hub upstream and downstream, reduce noise.Interior fan blade makes the air inlet/outlet side of wheel hub be formed through-flow, and air-flow can not be caused to block, and is conducive to strengthening the heat radiation to motor, reduces the temperature rise of motor.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the axial-flow leaf of the embodiment of the present invention;
Fig. 2 is the three-dimensional structure diagram of the axial-flow leaf of the embodiment of the present invention;
Fig. 3 is the local structural graph of the axial-flow leaf of the embodiment of the present invention;
Fig. 4 is the trailing edge structures figure of the interior fan blade of the axial-flow leaf of the embodiment of the present invention;
Fig. 5 a to Fig. 5 c be the embodiment of the present invention axial-flow leaf in the structural drawing of fan blade;
Fig. 6 is the perspective cross-sectional structural drawing of the axial-flow leaf of the embodiment of the present invention;
Fig. 7 a to Fig. 7 e be the embodiment of the present invention axial-flow leaf in the blade profile figure of fan blade.
Description of reference numerals: 1, wheel hub; 2, external wind wheel; 3, rotating shaft; 4, interior fan blade.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Shown in Fig. 1 and Fig. 2, according to embodiments of the invention, axial-flow leaf comprises wheel hub 1, external wind wheel 2, rotating shaft 3 and interior fan blade 4.External wind wheel 2 is fixedly installed on the periphery of wheel hub 1 along the circumference of wheel hub 1; Rotating shaft 3 is arranged in wheel hub 1; Interior fan blade 4 is fixedly connected between rotating shaft 3 and wheel hub 1, and along wheel hub 1 circumferentially.
This axial-flow leaf comprises interior fan blade 4 and external wind wheel 2, remove the disc structure that wheel hub 1 is original had, interior fan blade 4 is arranged in wheel hub 1, by interior fan blade 4, original wheel hub 1 is changed into style of opening by encapsulation, thus can be done work by interior fan blade 4, the acting ability of axial-flow leaf can be increased, improve the utilization ratio of air quantity and blade structure, and the eddy current improved near wheel hub 1 upstream and downstream, reduce noise.Interior fan blade 4 makes the air inlet/outlet side of wheel hub 1 be formed through-flow, and air-flow can not be caused to block, and is conducive to strengthening the heat radiation to motor, reduces the temperature rise of motor.This kind of structure decreases the material consumption of fan blade, can reduce fan blade cost.
The first end of interior fan blade 4 is fixedly connected on the periphery of rotating shaft 3, and the second end is fixedly connected on the inner circumferential of wheel hub 1.First end due to interior fan blade 4 is connected to the periphery of rotating shaft 3, second end is connected to the inner circumferential of wheel hub 1, therefore interior fan blade 4 can play the effect of stiffening rib simultaneously, plays reinforing function to the linkage structure between wheel hub 1 and rotating shaft 3, ensures the integrally-built steadiness of axial-flow leaf.
Wheel hub 1 and rotating shaft 3 are coaxially arranged, and can ensure that in axial-flow leaf working procedure, air inlet/outlet is balanced, improves the service behaviour of axial-flow leaf further.
In conjunction with shown in Figure 3, the outer edge radius of interior fan blade 4 is 0.1R to R1, and wherein R is the outer edge radius of external wind wheel 2, and R1 is the internal diameter of wheel hub 1, and the span of R1 is 0.25R to 0.4R.R0 in figure represents the radius of rotating shaft.The outer edge radius of interior fan blade is set to 0.1R to R1, both can ensure that interior fan blade 4 had enough blade radius to ensure the mobility of air in the space between wheel hub 1 and rotating shaft 3, this region is avoided to cause obstruction to air flowing, the blade radius of interior fan blade 4 can be avoided again excessive and adverse effect is caused to external wind wheel 2, thus ensure the maximization of axial-flow leaf acting ability, improve the service behaviour of axial-flow leaf.
Preferably, the blade quantity of interior fan blade 4 is the non-integral multiple of external wind wheel 2 blade quantity.The such as blade quantity of interior fan blade 4 is 1.5 times of the blade quantity of external wind wheel 2, the object that this kind is arranged is, the problem of the blower fan Rotation Noise superposition avoiding the integral multiple that the blade quantity of interior fan blade 4 is the blade quantity of external wind wheel 2 to bring, reduces noise during axial-flow leaf work.
In the present embodiment, the blade quantity of interior fan blade 4 is Z to 3Z, and wherein Z is external wind wheel 2 blade quantity, thus is limited in a zone of reasonableness by the blade quantity of interior fan blade 4, ensures the normal table work of axial-flow leaf.
The setting angle of interior fan blade 4 is 10 to 35 degree.
In conjunction with shown in Figure 4, the trailing edge of interior fan blade 4 is flexuose (S2), wavy (S3) or S shape (S4), thus the vortex pair of a series of counterrotating can be formed at the trailing edge of interior fan blade 4, change trailing vortex structure, reduce the exhibition in tail district, downstream to coherence, reduce the far-field radiation of noise, improve the anti-acoustic capability of interior fan blade 4.Certainly, the trailing edge of interior fan blade 4 also can be plain edition, i.e. circular arc (S1).
In conjunction with see shown in Fig. 5 a to Fig. 5 c, interior fan blade 4 can (Fig. 5 a), clockwise bends (backward bending) (Fig. 5 b) or bend (radially bending) (Fig. 5 c) to middle indent for counterclockwise bending (frontal arc), which kind of warp architecture of concrete selection, the concrete actual operating mode with reference to axial-flow leaf and determines.
In conjunction with see shown in Fig. 6 to Fig. 7 c, in axial-flow leaf of the present invention, the blade profile of interior fan blade 4 is the thicker such as circular arc (thicker such as thicker (Fig. 7 b), the flat board (Fig. 7 c) such as Fig. 7 a), circular arc is non-, dull and stereotyped thicker (Fig. 7 d) or the aerofoil profile (Fig. 7 e) such as non-.The blade profile variation of interior fan blade 4, the concrete function that will be able to realize according to axial-flow leaf and select suitable blade profile, to make the acting of axial-flow leaf maximize, performance is more powerful.
After employing axial-flow leaf of the present invention, obtain existing fan blade trip information relevant to axial-flow leaf of the present invention as follows:
As can be seen from the table, when prior art fan blade and axial-flow leaf of the present invention are operated in 900rpm simultaneously, when noise increases less, air quantity adds 4.3%.When providing identical air quantity, relative to the fan blade of prior art, axial-flow leaf of the present invention only needs to reach 860rpm, not only be improved on noise, and also decrease in power consumption, therefore, from above-mentioned analysis, axial-flow leaf of the present invention, for existing fan blade, in same rotational speed situation, can provide larger air quantity, under identical air quantity, the acting of consumption is less, more energy-conservation, there is more excellent performance.
According to embodiments of the invention, axial-flow blower comprises axial-flow leaf, and this axial-flow leaf is above-mentioned axial-flow leaf.
According to embodiments of the invention, air conditioner comprises axial-flow blower, and this axial-flow blower is above-mentioned axial-flow blower.
Certainly, be more than the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art, under the prerequisite not departing from its general principles, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (12)
1. an axial-flow leaf, is characterized in that, comprising:
Wheel hub (1);
External wind wheel (2), the circumference along described wheel hub (1) is fixedly installed on the periphery of described wheel hub (1);
Rotating shaft (3), is arranged in described wheel hub (1);
Interior fan blade (4), is fixedly connected between described rotating shaft (3) and described wheel hub (1), and along described wheel hub (1) circumferentially.
2. axial-flow leaf according to claim 1, is characterized in that, the first end of described interior fan blade (4) is fixedly connected on the periphery of described rotating shaft (3), and the second end is fixedly connected on the inner circumferential of described wheel hub (1).
3. axial-flow leaf according to claim 1, is characterized in that, described wheel hub (1) and described rotating shaft (3) are coaxially arranged.
4. axial-flow leaf according to claim 1, it is characterized in that, the outer edge radius of described interior fan blade (4) is 0.1R to R1, and wherein R is the outer edge radius of external wind wheel (2), R1 is the internal diameter of wheel hub (1), and the scope of R1 is 0.25R to 0.4R.
5. axial-flow leaf according to claim 1, is characterized in that, the blade quantity of described interior fan blade (4) is the non-integral multiple of described external wind wheel (2) blade quantity.
6. axial-flow leaf according to claim 5, is characterized in that, the blade quantity of described interior fan blade (4) is Z to 3Z, and wherein Z is external wind wheel (2) blade quantity.
7. axial-flow leaf according to claim 1, is characterized in that, the setting angle of described interior fan blade (4) is 10 to 35 degree.
8. axial-flow leaf according to any one of claim 1 to 7, is characterized in that, the trailing edge of described interior fan blade (4) is flexuose, wavy or S shape.
9. axial-flow leaf according to any one of claim 1 to 7, is characterized in that, described interior fan blade (4) is frontal arc, backward bending or radially bend.
10. axial-flow leaf according to any one of claim 1 to 7, is characterized in that, the blade profile of described interior fan blade (4) is the thicker such as thicker, flat board such as the thicker such as circular arc, circular arc be non-, dull and stereotyped thicker or the aerofoil profile such as non-.
11. 1 kinds of axial-flow blowers, comprise axial-flow leaf, it is characterized in that, the axial-flow leaf of described axial-flow leaf according to any one of claim 1 to 10.
12. 1 kinds of air conditioners, comprise axial-flow blower, it is characterized in that, described axial-flow blower is axial-flow blower according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655692.8A CN105240316A (en) | 2015-10-10 | 2015-10-10 | Axial flow blade, axial flow fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655692.8A CN105240316A (en) | 2015-10-10 | 2015-10-10 | Axial flow blade, axial flow fan and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240316A true CN105240316A (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510655692.8A Pending CN105240316A (en) | 2015-10-10 | 2015-10-10 | Axial flow blade, axial flow fan and air conditioner |
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| Country | Link |
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| CN (1) | CN105240316A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015050A (en) * | 2016-07-19 | 2016-10-12 | 浙江中坚科技股份有限公司 | Axial flow fan |
| CN107436007A (en) * | 2017-09-12 | 2017-12-05 | 中山市壹比壹节能环保科技有限公司 | Axial-flow type mute air conditioning fan |
| CN112012960A (en) * | 2020-08-03 | 2020-12-01 | 珠海格力电器股份有限公司 | Fan blade assembly, fan assembly and air conditioner |
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| US20030044283A1 (en) * | 2001-08-31 | 2003-03-06 | Sylvain Nadeau | Low tone axial fan structure |
| KR20030092546A (en) * | 2002-05-30 | 2003-12-06 | 위니아만도 주식회사 | Axial fan for vehicle |
| KR20050042946A (en) * | 2003-11-04 | 2005-05-11 | 엘지전자 주식회사 | Axial flow fan |
| CN102227562A (en) * | 2009-06-28 | 2011-10-26 | 博姆达株式会社 | Axial fan |
| CN205117806U (en) * | 2015-10-10 | 2016-03-30 | 珠海格力电器股份有限公司 | Axial compressor fan blade, axial fan and air conditioner |
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2015
- 2015-10-10 CN CN201510655692.8A patent/CN105240316A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030044283A1 (en) * | 2001-08-31 | 2003-03-06 | Sylvain Nadeau | Low tone axial fan structure |
| KR20030092546A (en) * | 2002-05-30 | 2003-12-06 | 위니아만도 주식회사 | Axial fan for vehicle |
| KR20050042946A (en) * | 2003-11-04 | 2005-05-11 | 엘지전자 주식회사 | Axial flow fan |
| CN102227562A (en) * | 2009-06-28 | 2011-10-26 | 博姆达株式会社 | Axial fan |
| CN205117806U (en) * | 2015-10-10 | 2016-03-30 | 珠海格力电器股份有限公司 | Axial compressor fan blade, axial fan and air conditioner |
Non-Patent Citations (2)
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| 中国农业机械化科学研究院: "《农业机械设计手册（上册）》", 30 November 2007 * |
| 吴秉礼，李文洲: "《轴流通风机的工程设计方法》", 30 September 2007 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015050A (en) * | 2016-07-19 | 2016-10-12 | 浙江中坚科技股份有限公司 | Axial flow fan |
| CN107436007A (en) * | 2017-09-12 | 2017-12-05 | 中山市壹比壹节能环保科技有限公司 | Axial-flow type mute air conditioning fan |
| CN112012960A (en) * | 2020-08-03 | 2020-12-01 | 珠海格力电器股份有限公司 | Fan blade assembly, fan assembly and air conditioner |
| CN112012960B (en) * | 2020-08-03 | 2021-06-22 | 珠海格力电器股份有限公司 | Fan blade assembly, fan assembly and air conditioner |
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Application publication date: 20160113 |