CN207814054U - Centrifuge blade, centrifugation blade, centrifugal blower and air conditioner - Google Patents
Centrifuge blade, centrifugation blade, centrifugal blower and air conditioner Download PDFInfo
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- CN207814054U CN207814054U CN201721873220.0U CN201721873220U CN207814054U CN 207814054 U CN207814054 U CN 207814054U CN 201721873220 U CN201721873220 U CN 201721873220U CN 207814054 U CN207814054 U CN 207814054U
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Abstract
The utility model provides a kind of centrifuge blade, centrifugation blade, centrifugal blower and air conditioner.Centrifuge blade includes the suction surface positioned at the pressure face of the first side of centrifuge blade and positioned at the centrifuge blade the second side opposite with the first side, it is formed on the suction surface molded line of suction surface and is provided with odd number transition inflection point, suction surface molded line is divided into multistage arc segment by transition inflection point, the bending directions of adjacent two sections of arc segments on the contrary, and one end of the blade trailing edge of the close centrifuge blade of suction surface molded line be directed away from the direction of the first side of centrifuge blade and gradually expand.Centrifuge blade in the utility model can eliminate the phenomenon that conventional centrifugal fan blade easy tos produce negative pressure near the blade trailing edge suction surface of centrifuge blade, it avoids that air-flow resorption occurs, to eliminate the swirl pneumatic noise at this, the ability to function of centrifuge blade is also improved simultaneously, and pneumatic efficiency increases.
Description
Technical field
The utility model is related to air-conditioning device technical field, in particular to a kind of centrifuge blade, centrifugation blade, from
Heart wind turbine and air conditioner.
Background technology
Shown in Fig. 1 to Fig. 3, the whole how domed shape of conventional centrifugal leaf blade suction surface molded line 12 ', wherein arch
Peak, i.e. 12 ' extreme point of suction surface molded line are in front of the blade between edge 14 ' and blade trailing edge 13 ', from peak (extreme point) to both sides
Blade inlet edge 14 ' and blade trailing edge 13 ' it is on a declining curve.Such molded line structure, when fan blade rotates, air-flow flows through blade suction
Power face, after arch molded line extreme point, since effect of inertia is still along original track flow forward, and not along arch
The suction surface at 12 ' extreme point rear of suction surface molded line flows.So as to cause 12 ' extreme point of arch suction surface molded line to blade blade
Suction surface section between trailing edge 13 ' nearby generates negative pressure, and then air-flow resorption phenomenon occurs, in 12 ' pole of arch suction surface molded line
Value point rear generates eddy airstream close to 13 ' place of blade trailing edge, on the one hand generates swirl pneumatic noise, on the other hand reduces fan blade
Pneumatic efficiency.
Utility model content
The main purpose of the utility model is to provide a kind of centrifuge blade, centrifugation blade, centrifugal blower and air conditioner, with
Solve the problems, such as that centrifugation blade in the prior art easy tos produce swirl pneumatic noise.
To achieve the goals above, one side according to the present utility model provides a kind of centrifuge blade, including is located at
The pressure face of the first side of centrifuge blade and suction surface positioned at the centrifuge blade the second side opposite with the first side, form suction surface
It is provided with odd number transition inflection point on suction surface molded line, suction surface molded line is divided into multistage arc segment by transition inflection point, and adjacent two
The bending direction of section arc segment on the contrary, and one end of the blade trailing edge of the close centrifuge blade of suction surface molded line be directed away from centrifugation
The direction of the first side of blade gradually expands.
Further, transition inflection point is 1.
Further, the blade inlet edge molded line and suction surface molded line for forming the blade inlet edge of centrifuge blade join to form first
Intersection point, forms the blade trailing edge molded line of blade trailing edge and suction surface molded line joins to form the second intersection point, and the first intersection point and second is handed over
Horizontal distance between point is L, and the horizontal distance between the second intersection point and transition inflection point is L1, wherein L1/L=0.5~
0.62。
Further, L1/L=0.55.
Further, blade trailing edge molded line joins to form third intersection point with the pressure face molded line for forming pressure face, and second hands over
Vertical range between point and third intersection point is H, and the vertical range between the leaf top and the second intersection point of blade inlet edge is H1,
In, H1/H=0.4~0.5.
Further, H1/H=0.45.
Further, blade inlet edge molded line is elliptic arc molded line or circular arc molded line.
Further, blade trailing edge molded line is straight line molded line or circular arc molded line or elliptic arc molded line.
Further, pressure face molded line is arch.
Another aspect according to the present utility model, provides a kind of centrifugation blade, including fan blade shroud, fan blade hub disk and
The centrifuge blade being arranged between fan blade shroud and fan blade hub disk, centrifuge blade are above-mentioned centrifuge blade.
Another aspect according to the present utility model, provides a kind of centrifugal blower, including centrifugation blade, and centrifugation blade is upper
The centrifugation blade stated.
It is according to the present utility model in another aspect, provide a kind of air conditioner, including centrifugal blower, centrifugal blower is above-mentioned
Centrifugal blower.
Using the technical solution of the utility model, due to being provided with odd number mistake on the suction surface molded line in the utility model
Inflection point is crossed, and one end of the blade trailing edge of the close centrifuge blade of suction surface molded line is directed away from the direction of the first side of centrifuge blade
It gradually expands, eliminates the extreme point of conventional centrifugal vane type line, it, can be true when air-flow is flowed through from the suction surface of centrifuge blade
Air-flow is protected from the blade inlet edge to blade trailing edge flow process of centrifuge blade, is moved ahead always along suction surface molded line, to disappear
The phenomenon that easy ting produce negative pressure near the blade trailing edge suction surface of centrifuge blade except conventional centrifugal fan blade avoids that air-flow occurs
Resorption to eliminate the swirl pneumatic noise at this, while also improving the ability to function of centrifuge blade, and pneumatic efficiency increases.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
In the accompanying drawings：
Fig. 1 diagrammatically illustrates the vertical view of existing centrifuge blade；
Fig. 2 diagrammatically illustrates the stereogram of existing centrifuge blade；
The flow graph of air-flow when Fig. 3 diagrammatically illustrates existing centrifuge blade wind-guiding；
Fig. 4 diagrammatically illustrates the stereogram of the centrifuge blade of the utility model；
Fig. 5 diagrammatically illustrates the vertical view of the centrifuge blade of the utility model；
The flow graph of air-flow when Fig. 6 diagrammatically illustrates the centrifuge blade wind-guiding of the utility model；
Fig. 7 diagrammatically illustrates the first stereogram of the centrifugation blade of the utility model；
Fig. 8 diagrammatically illustrates the second stereogram of the centrifugation blade of the utility model；
Fig. 9 diagrammatically illustrates the vertical view of the centrifugation blade of the utility model；And
Figure 10 diagrammatically illustrates the sectional view of the centrifugation blade of the utility model.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, centrifuge blade；11, pressure face；111, pressure face molded line；12, suction surface；121, suction surface molded line；13, blade
Trailing edge；131, blade trailing edge molded line；122, transition inflection point；14, blade inlet edge；141, blade inlet edge molded line；20, fan blade shroud；
30, fan blade hub disk.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment not
Those of be necessarily limited to clearly to list step or unit, but may include not listing clearly or for these processes, side
The intrinsic other steps of method, product or equipment or unit.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Shown in fig. 4 to fig. 6, embodiment according to the present utility model provides a kind of centrifuge blade 10, the present embodiment
In centrifuge blade 10 include positioned at 10 first side of centrifuge blade pressure face 11 and positioned at centrifuge blade 10 it is opposite with the first side
The second side suction surface 12, be provided with odd number transition on the suction surface molded line 121 of the formation suction surface 12 in the present embodiment
Inflection point 122, and one end of the blade trailing edge 13 of the close centrifuge blade 10 of suction surface molded line 121 is directed away from centrifuge blade 10
The direction of side gradually expands, so that one end of the close blade trailing edge 13 of centrifuge blade 10 is in horn-like.
By being provided with odd number transition inflection point 122, and suction surface molded line on suction surface molded line 121 in this present embodiment
The direction that one end of the blade trailing edge 13 of 121 close centrifuge blade 10 is directed away from 10 first side of centrifuge blade gradually expands,
The extreme point for eliminating conventional centrifugal vane type line, when air-flow is flowed through from the suction surface 12 of centrifuge blade, it can be ensured that air-flow
From the blade inlet edge 14 to 13 flow process of blade trailing edge of centrifuge blade 10, move ahead always along suction surface molded line 121, to
The phenomenon that conventional centrifugal fan blade easy tos produce negative pressure at the blade trailing edge 13 of centrifuge blade 10 near suction surface 12 is eliminated, is avoided
Air-flow resorption occurs, to eliminate the swirl pneumatic noise at this, while also improving the ability to function of centrifuge blade 10, pneumatically
Efficiency increases.
Preferably, the transition inflection point 122 in the present embodiment is 1, simple in structure, easy to process.Certainly, new in this practicality
In the other embodiment of type, transition inflection point 122 can also be set to 3,5 etc., as long as ensureing leaning on for suction surface molded line 121
One end of the blade trailing edge 13 of nearly centrifuge blade 10 is directed away from the direction of 10 first side of centrifuge blade, and gradually expand can be one
Determine to avoid the centrifuge blade 10 of the utility model that air-flow resorption occurs in degree, to eliminate the eddy-current-start noise at this, together
When also improve the ability to function of centrifuge blade 10, pneumatic efficiency increases.
In conjunction with shown in fig. 4 to fig. 6, suction surface molded line 121 is divided into multistage camber line by the transition inflection point 122 in the present embodiment
Section, the bending direction of adjacent two sections of arc segments is on the contrary, in actual design, and the transition inflection point 122 in the present embodiment is 1, energy
Enough so that the air-flow of 12 side of suction surface moves ahead along suction surface molded line 121 as much as possible, the generation of swirl pneumatic noise is prevented.
In conjunction with shown in Fig. 5, the blade inlet edge molded line 141 and suction surface molded line of the blade inlet edge 14 of centrifuge blade 10 are formed
121 handing-over form the first intersection points, and the blade trailing edge molded line 131 and the handing-over of suction surface molded line 121 for forming blade trailing edge 13 form the
Two intersection points, horizontal distance between the first intersection point and the second intersection point are L, between the second intersection point and transition inflection point 122 it is horizontal away from
From for L1, wherein L1/L=0.5~0.62, it is preferable that L1/L=0.55 can effectively prevent the generation of vortex aerodynamic noise.
Blade trailing edge molded line 131 in the present embodiment forms third with the handing-over of pressure face molded line 111 for forming pressure face 11
Intersection point, vertical range between the second intersection point and third intersection point are H, the leaf top of blade inlet edge 14 (blade inlet edge 14 and blade
Trailing edge 13 is apart from a farthest vertex) vertical range between the second intersection point is H1, wherein H1/H=0.4~0.5, it is excellent
Selection of land, H1/H=0.45 can effectively prevent the generation of vortex aerodynamic noise.
It should be noted that the horizontal distance and vertical range in the present embodiment each mean and are horizontally arranged centrifuge blade 10
Horizontal distance when in the horizontal plane and vertical range, it is specific as shown in Figure 5.
Blade inlet edge molded line 141 in the utility model could be provided as elliptic arc molded line, may be set to be circular arc type
Line.
Blade trailing edge molded line 131 could be provided as straight line molded line, may be set to be circular arc molded line or elliptic arc molded line.
Pressure face molded line 111 in the present embodiment is arch, simple in structure, easy to process.
Another aspect according to the present utility model, it includes fan blade shroud 20, fan blade hub disk 30 to provide a kind of centrifugation blade
And the centrifuge blade 10 being arranged between fan blade shroud 20 and fan blade hub disk 30, the centrifuge blade 10 in the present embodiment are above-mentioned
Centrifuge blade 10 in embodiment.
The suction surface 12 of the centrifuge blade 10 of centrifugation blade in the present embodiment is using the suction surface with transition inflection point 122
From blade inlet edge 14 to blade trailing edge 13 there are N number of inflection point, wherein N is odd number for molded line 121, i.e. suction surface molded line 121, considers to add
Work manufacturing cost, it is preferable that N values 1.
Using the utility model centrifuge blade 10, when centrifuge blade 10 works, it is ensured that in air-flow flow process, centrifuge leaf
10 suction surface of piece, 12 side, air-flow can be bonded 10 surface flow forward (as shown in Figure 6) of centrifuge blade, avoid conventional centrifugal blade
The generation of 10 suction surface, 12 sidewind segregation phenomenon, to avoid in arch molded line extreme point to the suction between blade trailing edge 13
Face section nearby generates negative pressure, and the path for having blocked eddy airstream to generate eliminates the swirl pneumatic noise near blade trailing edge.Together
When, due to eliminating useless eddy airstream, reduce power consumption so that aerodynamic performance is improved.
According to experiment it is recognised that being based on identical air-conditioning duct, compared using identical experiment condition, this practicality
The more conventional centrifugation blade blade noise total value of novel centrifugal blade construction reduces 0.6-0.9dB, and pneumatic efficiency promotes 3%-5%.
Another embodiment according to the present utility model, provides a kind of centrifugal blower, including centrifugation blade, and centrifugation blade is
Centrifugation blade in above-described embodiment.
It is according to the present utility model in another aspect, provide a kind of air conditioner, including centrifugal blower, centrifugal blower is above-mentioned
Centrifugal blower.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：This reality
Transition inflection point is used with novel centrifuge blade bulbous bow profile, eliminates the extreme point of conventional centrifugal vane type line, it can be ensured that
Air-flow moves ahead along suction surface molded line, in from blade inlet edge to blade trailing edge flow process to eliminate conventional centrifugal wind always
Leaf generates the phenomenon that negative pressure near blade trailing edge suction surface, avoids that air-flow resorption occurs, to eliminate the vortex gas at this
Dynamic noise, while centrifuge blade ability to function is also improved, pneumatic efficiency increases.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (12)
1. a kind of centrifuge blade (10), which is characterized in that the pressure face (11) including being located at (10) first side of the centrifuge blade
Suction surface (12) with positioned at the centrifuge blade (10) the second side opposite with the first side, forms the suction of the suction surface (12)
It is provided with odd number transition inflection point (132) on power face molded line (121), the transition inflection point (132) is by the suction surface molded line
(121) it is divided into multistage arc segment, the bending direction of adjacent two sections of arc segments is on the contrary, and the suction surface molded line (121)
One end of the blade trailing edge (13) close to the centrifuge blade (10) be directed away from the side of (10) first side of the centrifuge blade
To gradually expanding.
2. centrifuge blade (10) according to claim 1, which is characterized in that the transition inflection point (122) is 1.
3. centrifuge blade (10) according to claim 2, which is characterized in that before forming the blade of the centrifuge blade (10)
The blade inlet edge molded line (141) of edge (14) forms the first intersection point with the suction surface molded line (121) handing-over, forms the blade tail
Edge (13) blade trailing edge molded line (131) and the suction surface molded line (121) handing-over formed the second intersection point, first intersection point and
Horizontal distance between second intersection point is L, and the horizontal distance between second intersection point and the transition inflection point (122) is
L1, wherein L1/L=0.5~0.62.
4. centrifuge blade (10) according to claim 3, which is characterized in that L1/L=0.55.
5. centrifuge blade (10) according to claim 3, which is characterized in that the blade trailing edge molded line (131) and formation
Pressure face molded line (111) handing-over of the pressure face (11) forms third intersection point, second intersection point and the third intersection point it
Between vertical range be H, vertical range between the leaf top and second intersection point of the blade inlet edge (14) is H1, wherein
H1/H=0.4~0.5.
6. centrifuge blade (10) according to claim 5, which is characterized in that H1/H=0.45.
7. centrifuge blade (10) according to claim 3, which is characterized in that the blade inlet edge molded line (141) is ellipse
Camber line or circular arc molded line.
8. centrifuge blade (10) according to claim 3, which is characterized in that the blade trailing edge molded line (131) is straight line
Molded line or circular arc molded line or elliptic arc molded line.
9. centrifuge blade (10) according to claim 5, which is characterized in that the pressure face molded line (111) is arch.
10. a kind of centrifugation blade, including fan blade shroud (20), fan blade hub disk (30) and setting in the fan blade shroud (20) and
Centrifuge blade (10) between the fan blade hub disk (30), which is characterized in that the centrifuge blade (10) is claim 1 to 9
Any one of described in centrifuge blade (10).
11. a kind of centrifugal blower, including centrifugation blade, which is characterized in that the centrifugation blade be it is according to any one of claims 10 from
Heart fan blade.
12. a kind of air conditioner, including centrifugal blower, which is characterized in that the centrifugal blower is the centrifugation described in claim 11
Wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721873220.0U CN207814054U (en) | 2017-12-26 | 2017-12-26 | Centrifuge blade, centrifugation blade, centrifugal blower and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721873220.0U CN207814054U (en) | 2017-12-26 | 2017-12-26 | Centrifuge blade, centrifugation blade, centrifugal blower and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814054U true CN207814054U (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721873220.0U Active CN207814054U (en) | 2017-12-26 | 2017-12-26 | Centrifuge blade, centrifugation blade, centrifugal blower and air conditioner |
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|---|---|
| CN (1) | CN207814054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119413A (en) * | 2017-12-26 | 2018-06-05 | 珠海格力电器股份有限公司 | Centrifuge blade, centrifugation blade, centrifugal blower and air conditioner |
-
2017
- 2017-12-26 CN CN201721873220.0U patent/CN207814054U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119413A (en) * | 2017-12-26 | 2018-06-05 | 珠海格力电器股份有限公司 | Centrifuge blade, centrifugation blade, centrifugal blower and air conditioner |
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