CN205207269U - Fan, axial flow fan blade and blade thereof - Google Patents
Fan, axial flow fan blade and blade thereof Download PDFInfo
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- CN205207269U CN205207269U CN201521075080.3U CN201521075080U CN205207269U CN 205207269 U CN205207269 U CN 205207269U CN 201521075080 U CN201521075080 U CN 201521075080U CN 205207269 U CN205207269 U CN 205207269U
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- flow leaf
- aerofoil profile
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- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
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Abstract
The utility model discloses a fan, axial fan blade and blade thereof, the blade of axial fan blade, the both sides of blade are arranged and are first side and second side respectively along its direction of rotation, the both ends of blade are the free end respectively and are used for the link of being connected with the wheel hub of this axial fan blade, be fixed with the airfoil stator on the suction surface of blade, the airfoil stator by first side extends to the second side along the pitch arc, the airfoil stator is located the tip of first side is first end and is located the tip of second side is the second end, by the extending direction of first end to second end is the same with the direction of rotation of this blade, just the second end is apart from the distance of free end is greater than the first end is apart from the distance of free end. The blade of the axial flow fan blade has the advantages that the structural design can effectively reduce the noise generated when the axial flow fan blade rotates and improve the air output of the fan.
Description
Technical field
The utility model relates to electric refrigerator technical field, more particularly, relates to a kind of fan, axial-flow leaf and blade thereof.
Background technique
The axial-flow leaf of fan comprises wheel hub and is arranged on the multiple blades on wheel hub, and blade is evenly arranged along the circumference of wheel hub.The side of blade is pressure side, and opposite side is suction surface, and wheel hub rotates under the drive of motor, and then drives blade rotary.Air-flow flows along the pressure side of blade, and wind is delivered to front.At the suction surface of blade, the pressure of gas is lower, and some gas can flow downward, have air-flow simultaneously and occur jam between two blades, such air-flow just can not very smoothly along streamline flowing, and noise is larger, and gas can not be fully used, have impact on the air quantity of fan.In addition, blade when rotated, because air-flow periodically blows and beats blade, at the blade tip top of blade, because air-flow can produce whirlpool herein, and then can produce certain rotational noise.
In sum, how effectively reducing the noise of generation when axial-flow leaf rotates and improve fan air output simultaneously, is current those skilled in the art's urgent problem.
Model utility content
In view of this, first object of the present utility model is the blade providing a kind of axial-flow leaf, the structural design of the blade of this axial-flow leaf effectively can reduce the noise of generation when axial-flow leaf rotates and improve fan air output simultaneously, and second object of the present utility model is to provide a kind of axial-flow leaf and the fan that comprise above-mentioned blade.
In order to reach above-mentioned first object, the utility model provides following technological scheme:
A blade for axial-flow leaf, arrange along its sense of rotation and be respectively the first side and the second side in the both sides of described blade, the two ends of described blade are respectively free end and the connecting end for being connected with the wheel hub of this axial-flow leaf,
The suction surface of described blade is fixed with aerofoil profile stator, described aerofoil profile stator extends to the second side by described first side along camber line, the end that described aerofoil profile stator is positioned at described first side is first end and the end being positioned at described second side is the second end, identical with the sense of rotation of this blade by the bearing of trend of described first end to the second end, and described second end is greater than the distance of described first end apart from described free end apart from the distance of described free end.
Preferably, in the blade of above-mentioned axial-flow leaf, described free end is point of contact apart from described connecting end point farthest, cross described point of contact and tangent line perpendicular to the axis of this axial-flow leaf is reference line, described connecting end is L apart from the ultimate range of described reference line, described second end is H apart from the ultimate range of described reference line, and H=2/3L.
Preferably, in the blade of above-mentioned axial-flow leaf, described free end is point of contact apart from described connecting end point farthest, crosses described point of contact and tangent line perpendicular to the axis of this axial-flow leaf is reference line, and the angle connected between the straight line of described first end and the second end and described reference line is 10 °-30 °.
Preferably, in the blade of above-mentioned axial-flow leaf, described aerofoil profile stator is 1.5 times of described vane thickness along the axial extended distance being parallel to this axial-flow leaf.
Preferably, in the blade of above-mentioned axial-flow leaf, reduced gradually by the thickness of the radial direction along this axial-flow leaf of aerofoil profile stator described in described second end to first end.
Preferably, in the blade of above-mentioned axial-flow leaf, described aerofoil profile stator and described blade are integral type structure.
A kind of axial-flow leaf, comprises wheel hub and is arranged on the multiple blades on described wheel hub, and described blade is the axial-flow leaf according to any one of such as above-mentioned.
Preferably, in above-mentioned axial-flow leaf, the quantity of described blade is five, seven or nine.
A kind of fan, comprises as the axial-flow leaf according to any one of above-mentioned.
During the blade that application the utility model provides, aerofoil profile stator is provided with at the suction surface of blade, and aerofoil profile stator is identical with the sense of rotation of this blade by the bearing of trend of first end to the second end, second end is greater than the distance of first end apart from free end apart from the distance of free end, and aerofoil profile stator has good gas flow characteristic.The gas of suction surface can rise along airfoil surface by aerofoil profile stator well, reduces resistance.Aerofoil profile stator can allow the fluid of suction surface flow to the top of blade very smoothly along aerofoil profile streamline on the one hand, the gas of suction surface is no longer sunk, makes it flow; The air-flow of suction surface is broken up after aerofoil profile stator flow to blade tip on the other hand, and the wind speed of blade periphery is improved, and air quantity increases.Aerofoil profile stator can destroy the eddy current that blade produces at blade tip place simultaneously, breaks up eddy current, reduces eddy current crack, the noise of whole blade is declined.
In order to reach above-mentioned second object, the utility model additionally provides a kind of axial-flow leaf, and this axial-flow leaf comprises any one blade above-mentioned.Because above-mentioned blade has above-mentioned technique effect, the axial-flow leaf with this blade also should have corresponding technique effect.The utility model additionally provides a kind of fan comprising above-mentioned axial-flow leaf.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The plan view of the axial-flow leaf that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the partial enlarged drawing of a-quadrant in Fig. 1;
The erection drawing of the wheel hub that Fig. 3 provides for the utility model embodiment and blade;
The position view of the aerofoil profile stator that Fig. 4 provides for the utility model embodiment and blade.
In figures 1-4:
1-blade, 1a-first side, 1b-second side, 2-aerofoil profile stator, 3-wheel hub.
Embodiment
First object of the present utility model is the blade providing a kind of axial-flow leaf, the structural design of the blade of this axial-flow leaf effectively can reduce the noise of generation when axial-flow leaf rotates and improve fan air output simultaneously, and second object of the present utility model is to provide a kind of axial-flow leaf and the fan that comprise above-mentioned blade.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-Fig. 4, the both sides of the blade 1 of the axial-flow leaf that the utility model embodiment provides are respectively the first side 1a and the second side 1b, and the first side 1a and the second side 1b arranges along the sense of rotation of blade 1, namely sense of rotation (sense of rotation during axial-flow leaf work) arrangement when the first side 1a and the second side 1b works along blade 1, identical with the sense of rotation of axial-flow leaf by the bearing of trend of the first 1a to the second side, side 1b.The two ends of blade 1 are respectively free end and connecting end, and connecting end is the end for being connected with the wheel hub 3 of this axial-flow leaf of blade 1.The one side of blade 1 is suction surface, and another side is pressure side, and during general blade rotary, one side is windward pressure side, and leeward one side is suction surface.
Focus on, the suction surface of blade 1 is fixed with aerofoil profile stator 2, and the two ends of aerofoil profile stator 2 lay respectively at the first side 1a and the second side 1b of blade 1, and wherein aerofoil profile stator 2 is positioned at the end of the first side 1a is first end, and the end being positioned at the second side 1b is the second end.Aerofoil profile stator 2 extends to the second side 1b by the first side 1a along camber line, is namely extended along camber line by this aerofoil profile stator 2 of first end to the second end.And it is identical with the sense of rotation of this blade 1 by the bearing of trend of first end to the second end, second end is greater than the distance of first end apart from free end apart from the distance of free end, namely by this aerofoil profile stator 2 of first end to the second end gradually near the axis of this axial-flow leaf, by this aerofoil profile stator 2 of first end to the second end gradually away from free end.Aerofoil profile stator 2 is cambered surface towards the side of free end, and is also cambered surface towards the side of connecting end, and air-flow can move along cambered surface.
During the blade 1 that application the utility model embodiment provides, aerofoil profile stator 2 is provided with at the suction surface of blade 1, and aerofoil profile stator 2 is identical with the sense of rotation of this blade 1 by the bearing of trend of first end to the second end, second end is greater than the distance of first end apart from free end apart from the distance of free end, and aerofoil profile stator 2 has good gas flow characteristic.The gas of suction surface rises along airfoil surface by aerofoil profile stator 2 well, reduces resistance.Aerofoil profile stator 2 one aspect can allow the fluid of suction surface flow to the top of blade 1 very smoothly along aerofoil profile streamline, the gas of suction surface is no longer sunk, makes it flow; The air-flow of suction surface is broken up after aerofoil profile stator 2 flow to blade 1 top on the other hand, and the wind speed of blade 1 periphery is improved, and air quantity increases.Aerofoil profile stator 2 can destroy the eddy current that blade 1 produces at blade tip place simultaneously, breaks up eddy current, reduces eddy current crack, the noise of whole blade 1 is declined.
As shown in Figure 4, free end is point of contact apart from connecting end point farthest, cross point of contact and tangent line perpendicular to the axis of this axial-flow leaf is reference line, connecting end is L apart from the ultimate range of reference line, namely connecting end distance free end point is farthest L apart from the distance of reference line, second end is H apart from the ultimate range of reference line, and namely aerofoil profile stator 2 is H apart from the distance between the point farthest and reference line of reference line, and H=2/3L.Namely aerofoil profile stator 2 is probably positioned at 1/3rd places of blade 1 and closer to connecting end, so can ensures the reduction noise that this aerofoil profile stator 2 is maximum and improve air quantity.Certainly, aerofoil profile stator 2 can also be adjusted slightly near free end or connecting end according to actual conditions, in this no limit.
Further, free end is point of contact apart from connecting end point farthest, crosses point of contact and tangent line perpendicular to the axis of this axial-flow leaf is reference line, and the angle connected between the straight line of first end and the second end and reference line is 10 °-30 °.Namely the angle between the chord length of aerofoil profile stator 2 and reference line is 10 °-30 °, certainly, can also adjust the shape of aerofoil profile stator 2 according to actual conditions, in this no limit.
In addition, in order to ensure the intensity of aerofoil profile stator 2, aerofoil profile stator 2 is 1.5 times of blade 1 thickness along the extended distance of the axis being parallel to this axial-flow leaf, and namely aerofoil profile stator 2 axially extends to 1.5 times that its extended distance apart from blade 1 position is farthest blade 1 thickness by the position be connected with blade 1 along axial-flow leaf.Certainly, aerofoil profile stator 2 can also be adjusted along the extended distance of axis being parallel to this axial-flow leaf according to actual conditions, in this no limit.
Preferably, in order to reduce the windage during wind-guiding of aerofoil profile stator 2, reduced gradually by the thickness of the second end to the radial direction along this axial-flow leaf of first end aerofoil profile stator 2.Thickness wherein along the radial direction of this axial-flow leaf refers to the distance of the side of the close free end of aerofoil profile stator 2 to the side near connecting end, is reduced gradually by the thickness of the second end to this aerofoil profile stator 2 of first end.
For the ease of making processing, aerofoil profile stator 2 and blade 1 can be integral type structure.
In order to specifically understand effective effect of the present utility model, claimant has carried out wind quantity test for the axial-flow leaf of five blades 1 and the axial-flow leaf of five blades 1 not arranging aerofoil profile stator 2 arranging aerofoil profile stator 2, test the testing standard according to fan, and the air quantity on contrast test annulus, test result is as follows:
Do not add the axial-flow leaf of aerofoil profile stator
Add the axial-flow leaf of aerofoil profile stator
Contrasted from above-mentioned two forms, after adopting aerofoil profile stator 2, the air quantity of axial-flow leaf outmost turns significantly increases, and adopts the total blast volume after aerofoil profile stator 2 to add 4.2m than originally
3/ min, achieves the effect increasing air quantity after therefore increasing aerofoil profile stator 2.
Based on the blade 1 provided in above-described embodiment, the utility model additionally provides a kind of axial-flow leaf, multiple blades 1 that this axial-flow leaf comprises wheel hub 3 and is arranged on wheel hub 3, and its Leaf 1 is any one blade 1 in above-described embodiment.The blade 1 in above-described embodiment is have employed, so the beneficial effect of this axial-flow leaf please refer to above-described embodiment due to this axial-flow leaf.
Particularly, the quantity of the blade 1 of axial-flow leaf can be five, seven or nine, in this no limit.
The utility model additionally provides a kind of fan, and this fan comprises any one axial-flow leaf in above-described embodiment.The axial-flow leaf in above-described embodiment is have employed, so the beneficial effect of this fan please refer to above-described embodiment due to this fan.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. the blade (1) of an axial-flow leaf, arrange along its sense of rotation and be respectively the first side (1a) and the second side (1b) in the both sides of described blade (1), the two ends of described blade (1) are respectively free end and the connecting end for being connected with the wheel hub (3) of this axial-flow leaf, it is characterized in that
The suction surface of described blade (1) is fixed with aerofoil profile stator (2), described aerofoil profile stator (2) extends to the second side (1b) by described first side (1a) along camber line, the end that described aerofoil profile stator (2) is positioned at described first side (1a) is first end and the end being positioned at described second side (1b) is the second end, identical with the sense of rotation of this blade (1) by the bearing of trend of described first end to the second end, and described second end is greater than the distance of described first end apart from described free end apart from the distance of described free end.
2. the blade of axial-flow leaf according to claim 1, it is characterized in that, described free end is point of contact apart from described connecting end point farthest, cross described point of contact and tangent line perpendicular to the axis of this axial-flow leaf is reference line, described connecting end is L apart from the ultimate range of described reference line, described second end is H apart from the ultimate range of described reference line, and H=2/3L.
3. the blade of axial-flow leaf according to claim 1, it is characterized in that, described free end is point of contact apart from described connecting end point farthest, cross described point of contact and tangent line perpendicular to the axis of this axial-flow leaf is reference line, the angle connected between the straight line of described first end and the second end and described reference line is 10 °-30 °.
4. the blade of axial-flow leaf according to claim 1, is characterized in that, described aerofoil profile stator (2) is 1.5 times of described blade (1) thickness along the axial extended distance being parallel to this axial-flow leaf.
5. the blade of axial-flow leaf according to claim 1, is characterized in that, is reduced gradually by the thickness of the radial direction along this axial-flow leaf of aerofoil profile stator (2) described in described second end to first end.
6. the blade of the axial-flow leaf according to any one of claim 1-5, is characterized in that, described aerofoil profile stator (2) and described blade (1) are integral type structure.
7. an axial-flow leaf, comprise wheel hub (3) and be arranged on the multiple blades (1) on described wheel hub (3), it is characterized in that, described blade (1) is the axial-flow leaf such as according to any one of claim 1-6.
8. axial-flow leaf according to claim 7, is characterized in that, the quantity of described blade (1) is five, seven or nine.
9. a fan, is characterized in that, comprises the axial-flow leaf according to any one of claim 7-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075080.3U CN205207269U (en) | 2015-12-18 | 2015-12-18 | Fan, axial flow fan blade and blade thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075080.3U CN205207269U (en) | 2015-12-18 | 2015-12-18 | Fan, axial flow fan blade and blade thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205207269U true CN205207269U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521075080.3U Expired - Fee Related CN205207269U (en) | 2015-12-18 | 2015-12-18 | Fan, axial flow fan blade and blade thereof |
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| Country | Link |
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| CN (1) | CN205207269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402160A (en) * | 2015-12-18 | 2016-03-16 | 珠海格力电器股份有限公司 | Fan, axial flow fan blade and blade thereof |
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- 2015-12-18 CN CN201521075080.3U patent/CN205207269U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402160A (en) * | 2015-12-18 | 2016-03-16 | 珠海格力电器股份有限公司 | Fan, axial flow fan blade and blade thereof |
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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: 20160504 Termination date: 20211218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |