CN208252426U - A kind of impeller - Google Patents
A kind of impeller Download PDFInfo
- Publication number
- CN208252426U CN208252426U CN201820817844.9U CN201820817844U CN208252426U CN 208252426 U CN208252426 U CN 208252426U CN 201820817844 U CN201820817844 U CN 201820817844U CN 208252426 U CN208252426 U CN 208252426U
- Authority
- CN
- China
- Prior art keywords
- blade
- axle sleeve
- wheel hub
- impeller
- threaded hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a kind of impellers, are related to air-conditioning and Refrigeration Engineering technical field, solve the big technical problem of the eddy current crack of impeller existing in the prior art.A kind of impeller of the utility model, including wheel hub and blade group, since the radial section of the first blade in blade group is configured to the structure small close to one end of wheel hub greatly of one end far from wheel hub, therefore for same blade, it is not at the same time is by the minimum clearance with shell in the axial direction, therefore it can be avoided the superposition of identical frequency noise harmonic wave, so as to reduce the eddy current crack of impeller while not changing air quantity.
Description
Technical field
The utility model relates to air-conditioning and Refrigeration Engineering technical field, a kind of particularly impeller.
Background technique
Centrifugal blower is used to axial arrival air-flow changing circumferentially air-flow, and centrifugal blower fan blade wheel is the weight of centrifugal blower
Want component.It is constantly progressive with aerodynamic, the impeller research and development of various blowers are all using more novel design to obtain
Higher efficiency, lower noise, higher acoustic quality.Existing blower manufactures for convenience, generally protects leaf blade size
Hold consistent, and this uniform structure, for same blade, impeller due to synchronization in the axial direction by with shell
Minimum clearance at, thus can make the noise harmonic wave of identical frequency obtain superposition increase noise figure, make the eddy current crack of impeller
It is larger.
Utility model content
The utility model provides a kind of impeller, the big technology of the eddy current crack for solving impeller existing in the prior art
Problem.
The utility model provides a kind of impeller, including wheel hub and the blade group being arranged on the wheel hub, the blade
Group includes the first blade that multiple axis directions along the wheel hub extend；The radial section of first blade be configured to towards
The arcuate structure of the direction protrusion opposite with the direction of rotation of impeller, wherein the inner wall phase of first blade and the wheel hub
One end of small, far from the wheel hub the inner wall in one end even is big.
In one embodiment, first blade is angularly arranged along the periphery of the wheel hub, and described first
The quantity of blade is even number.
In one embodiment, the contour line in first blade radial section includes the first curve and the second curve,
First curve includes the first arc segment and the second arc segment being connected smoothly, and second curve includes smooth transition and connects
The third arc section and the 4th arc section connect, wherein the first arc section and third arc section are concentric, the second arc section and the 4th circle
Segmental arc is concentric.
In one embodiment, the blade group further includes the second blade, second blade and first blade
It is mutually staggered on the periphery of the wheel hub.
In one embodiment, it is provided with mounting hole at the center of the wheel hub, is provided with and is used in the mounting hole
The axle sleeve for installing rotary shaft, be arranged on the inner wall of the mounting hole it is fluted, be provided on the outer wall of the axle sleeve with it is described recessed
The bulge loop that slot matches.
In one embodiment, the pattern draft of the bulge loop is 3 °.
In one embodiment, it is provided in the mating surface of the axle sleeve and the mounting hole a plurality of along the axle sleeve
The groove that axis direction extends, outer circumference surface equidistantly distributed of the groove along the axle sleeve.
In one embodiment, keyway is provided in the mating surface of the axle sleeve and the rotary shaft, in the keyway
The pattern draft of wall is 1 °.
In one embodiment, the first threaded hole for installation locking screw is provided on the outer wall of the axle sleeve,
The axis of first threaded hole is vertical with the axis of the axle sleeve, and first threaded hole runs through the keyway.
In one embodiment, the end of the axle sleeve is provided with the second threaded hole, the axis of second threaded hole
It is parallel with the axis of the axle sleeve, axis of the depth less than first threaded hole of second threaded hole and the sleeve end
The distance between portion.
Compared with the prior art, the advantages of the utility model are: due to the radial section of the first blade be configured to it is separate
One end of wheel hub structure small close to one end of wheel hub greatly, therefore for same blade, it is not same in the axial direction
Time by the minimum clearance with shell at, therefore can be avoided the superposition of identical frequency noise harmonic wave, so as to not change
The eddy current crack of impeller is reduced while air quantity.
Detailed description of the invention
Hereinafter the utility model will be described in more detail based on the embodiments and with reference to the accompanying drawings.
Fig. 1 is the main view of impeller in the embodiments of the present invention；
Fig. 2 is enlarged drawing of the Fig. 1 at A；
Fig. 3 is the right view of Fig. 1；
Fig. 4 is axle sleeve main view shown in FIG. 1；
Fig. 5 is axle sleeve cross-sectional view shown in Fig. 4.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Appended drawing reference:
1- wheel hub；2- blade group；3- axle sleeve；
11- mounting hole；The first blade of 21-；The second blade of 22-；
31- bulge loop；32- groove；33- keyway；
The first threaded hole of 34-；The second threaded hole of 35-；The first curve of 211-；
The second curve of 212-.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model provides a kind of impeller, including wheel hub 1 and the blade group being arranged on wheel hub 12,
Blade group 2 includes the first blade 21 that multiple axis directions along wheel hub 1 extend；The radial section of first blade 21 be configured to
The arcuate structure of the direction protrusion opposite with the direction of rotation of impeller, arrow direction as shown in Figure 1 be impeller rotation
Direction, the first blade 21 is then towards opposite direction protrusion.
Wherein, one end of small, far from wheel hub 1 the inner wall in one end that the first blade 21 is connected with the inner wall of wheel hub 1 is big.
First blade 21 is angularly arranged along the periphery of wheel hub 1, and the quantity of the first blade 21 is even number.Even number
Blade is not likely to produce resonance, rotates more stable.In a preferred embodiment, the quantity of the first blade 21 is 42.
The contour line of first blade, 21 radial section includes the first curve 211 and the second curve 212, the first curve 211 packet
The first arc section (radius R11) and the second arc section (radius R12) being connected smoothly are included, the second curve 212 includes flat
The third arc section (radius R21) and the 4th arc section (radius R22) for crossing connection are slipped over, as shown in Fig. 2, the first arc section
Concentric with third arc section, the second arc section and the 4th arc section are concentric；And first blade one end width be less than the other end
Width, i.e. (R11-R21) < (R12-R22).
In addition, being connected smoothly between the first curve 211 and the second curve 212 by the arc section that radius is R3, even
The arc section for connecing the first curve 211 and the second curve 212 makes the taper arcuate structure of the first blade 21, can enhance water conservancy diversion effect
Fruit, makes that flow field flow is more smooth, noise is smaller.
Blade group 2 further includes the second blade 22, the extending direction phase of the extending direction of the second blade 22 and the first blade 21
Instead, and the second blade 22 mutually staggers on the periphery of wheel hub 1 with the first blade 21.In a preferred embodiment,
Second blade 22 is angularly arranged along the periphery of wheel hub 1, and the middle position of every two adjacent first blade 21 is all provided with
It is equipped with second blade 22, is as shown in phantom in Figure 1 the second blade 22；Also, the quantity and first of the second blade 22
The quantity of blade 21 is identical (the second blade 22 of part is illustrated only in Fig. 1).
In addition, structure identical with the first blade 21 can be used in the second blade 22.
Due on wheel hub 1 the first blade 21 and the second blade 22 to wheel hub 1 be in encirclement gesture, multiple first blades
21 form the first air intake passage around wheel hub 1, and multiple second blades 22 form the second air intake passage, the first air inlet around wheel hub 1
Channel and the air inlet direction of the second air intake passage are along the axial direction of wheel hub (i.e. vertical air inlet)；Due to the first blade 21 and the second leaf
The extending direction of piece 22 is on the contrary, therefore the air inlet of the first air intake passage and the second air intake passage is contrary；Air is from the first leaf
The outflow of the side (i.e. the trailing edge of blade) of piece 21 and the second blade 22, since the first blade 21 and the second blade 22 mutually stagger,
So that the air-flow of outflow is kept horizontal direction, then constitutes interrelated and mutually independent air exchange structure simultaneously, because
The centrifugal fan of this utility model can realize the wind runner pattern of vertical air inlet, the horizontal outlet air in more sides, make air inlet and the outlet
A possibility that interfering with each other between air-flow reduction improves the performance of fan heat exchange.
In one embodiment of the utility model, it is provided with mounting hole 11 at the center of wheel hub 1, is arranged in mounting hole 11
There is the axle sleeve 3 for installing rotary shaft, be arranged fluted on the inner wall of mounting hole 11, is provided on the outer wall of axle sleeve 3 and groove
The bulge loop 31 matched, bulge loop 31 can prevent axle sleeve 3 from play occurs in mounting hole 11.
Further, the pattern draft of bulge loop 31 is 3 °, such as α 2=3 ° in Fig. 5, be can reduce by the way that pattern draft is arranged
The installation difficulty of axle sleeve 3.
As shown in figure 4, being provided with what a plurality of axis direction along axle sleeve 3 extended in the mating surface of axle sleeve 3 and mounting hole 11
Groove 32, outer circumference surface equidistantly distributed of the groove 32 along axle sleeve 3.Groove 32 can effectively prevent mounting hole 11 and axle sleeve 3
Adhesion, it is easy to disassemble and maintenance.This is because when work powder can be generated between mounting hole 11 and axle sleeve 3, so that mounting hole
11 with 3 adhesion of axle sleeve.Before assembly, in the mating surface coating lubricating oil machine oil of axle sleeve 3；When disassembly, profit is added in groove 32
Lubricating oil can prevent the adhesion of mounting hole 11 Yu axle sleeve 3.
It is provided with keyway 33 in the mating surface of axle sleeve 3 and rotary shaft, keyway 33 can prevent from producing between rotary shaft and axle sleeve 3
Raw relative motion, such as α 1=1 ° in Fig. 5, allows to the installation for reducing rotary shaft in addition, the pattern draft of 33 inner wall of keyway is 1 °
By difficulty.
The first threaded hole 34 for installation locking screw, the axis of the first threaded hole 34 are provided on the outer wall of axle sleeve 3
Vertical with the axis of axle sleeve 3, the first threaded hole 34 runs through keyway 33.It can prevent rotary shaft from generating diameter by the first threaded hole 34
To play.
The end of axle sleeve 3 is provided with the second threaded hole 35, and the axis of the second threaded hole 35 is parallel with the axis of axle sleeve 3, such as
Shown in Fig. 5, the depth d2 of the second threaded hole 35 is less than the distance between the axis of the first threaded hole 34 and 3 end of axle sleeve d1, and
Two threaded holes 35 with the ring flange in rotary shaft for being positioned.
In one embodiment of the utility model, wheel hub 1 and blade group 2 are using PPG resin (containing glass fibre 20%)
Integral injection molding.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case where enclosing, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but is included all technical solutions falling within the scope of the claims.
Claims (10)
1. a kind of impeller, which is characterized in that described including wheel hub (1) and the blade group (2) being arranged on the wheel hub (1)
Blade group (2) includes the first blade (21) that multiple axis directions along the wheel hub (1) extend；First blade (21)
Radial section is configured to the arcuate structure towards the direction protrusion opposite with the direction of rotation of impeller, wherein first blade
(21) one end of small, far from the wheel hub (1) the inner wall in the one end being connected with the inner wall of the wheel hub (1) is big.
2. impeller according to claim 1, which is characterized in that circumference of first blade (21) along the wheel hub (1)
Face is angularly arranged, and the quantity of first blade (21) is even number.
3. impeller according to claim 2, which is characterized in that the contour line of the first blade (21) radial section includes
First curve (211) and the second curve (212), first curve (211) include the first arc section for being connected smoothly and
Second arc section, second curve (212) include the third arc section and the 4th arc section being connected smoothly, wherein the first circle
Segmental arc and third arc section are concentric, and the second arc section and the 4th arc section are concentric.
4. impeller according to any one of claim 1-3, which is characterized in that the blade group (2) further includes the second leaf
Piece (22), second blade (22) mutually stagger on the periphery of the wheel hub (1) with first blade (21).
5. impeller according to any one of claim 1-3, which is characterized in that be provided at the center of the wheel hub (1)
Mounting hole (11) is provided with the axle sleeve (3) for installing rotary shaft, the inner wall of the mounting hole (11) in the mounting hole (11)
Upper setting is fluted, and the bulge loop (31) matched with the groove is provided on the outer wall of the axle sleeve (3).
6. impeller according to claim 5, which is characterized in that the pattern draft of the bulge loop (31) is 3 °.
7. impeller according to claim 5, which is characterized in that the mating surface of the axle sleeve (3) and the mounting hole (11)
On be provided with the groove (32) that a plurality of axis direction along the axle sleeve (3) extends, the groove (32) is along the axle sleeve (3)
Outer circumference surface equidistantly distributed.
8. impeller according to claim 7, which is characterized in that set in the axle sleeve (3) and the mating surface of the rotary shaft
It is equipped with keyway (33), the pattern draft of keyway (33) inner wall is 1 °.
9. impeller according to claim 8, which is characterized in that be provided on the outer wall of the axle sleeve (3) for installing lock
The first threaded hole (34) of tight screw, the axis of first threaded hole (34) is vertical with the axis of the axle sleeve (3), and described the
One threaded hole (34) runs through the keyway (33).
10. impeller according to claim 9, which is characterized in that the end of the axle sleeve (3) is provided with the second threaded hole
(35), the axis of second threaded hole (35) is parallel with the axis of the axle sleeve (3), the depth of second threaded hole (35)
Less than the distance between the axis of first threaded hole (34) and the axle sleeve (3) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820817844.9U CN208252426U (en) | 2018-05-30 | 2018-05-30 | A kind of impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820817844.9U CN208252426U (en) | 2018-05-30 | 2018-05-30 | A kind of impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208252426U true CN208252426U (en) | 2018-12-18 |
Family
ID=64652362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820817844.9U Active CN208252426U (en) | 2018-05-30 | 2018-05-30 | A kind of impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208252426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159354A (en) * | 2019-06-12 | 2019-08-23 | 李忠奇 | A kind of novel impeller device |
-
2018
- 2018-05-30 CN CN201820817844.9U patent/CN208252426U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159354A (en) * | 2019-06-12 | 2019-08-23 | 李忠奇 | A kind of novel impeller device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204900330U (en) | Fan wheel , centrifugal fan and domestic appliance | |
| WO2014030248A1 (en) | Centrifugal compressor | |
| CN104196572B (en) | A kind of double; two disc turbine disks with dish chamber diversion rib plate | |
| CN104145118A (en) | Propeller fan, fluid sending device, and mold for molding | |
| CN104632700B (en) | Dual-impeller device of centrifugal blower | |
| CN102269169A (en) | Cross-flow fan and air conditioner with same | |
| CN204900286U (en) | Axial fan and air conditioner who has it | |
| CN104564803A (en) | Centrifugal impeller, centrifugal fan assembly and air conditioning unit | |
| CN204532956U (en) | Centrifugal impeller, centrifugal fan assembly and air conditioning unit | |
| CN208252426U (en) | A kind of impeller | |
| CN109404305B (en) | Bionic blade volute-free centrifugal ventilator | |
| CN205677862U (en) | A kind of centrifugal fan for three-phase brushless alternating-current generator | |
| CN109595197B (en) | Fan | |
| CN213450988U (en) | Centrifugal impeller and ventilator thereof | |
| CN108425881A (en) | A kind of impeller | |
| WO2024051360A1 (en) | Electric motor and fan | |
| CN111927823A (en) | Centrifugal impeller and high-specific-speed energy-saving centrifugal dust removal fan | |
| CN109595198B (en) | Fan impeller | |
| CN201687736U (en) | Cross-flow fan and air conditioner with same | |
| CN201916254U (en) | Centrifugal fan and air conditioner comprising same | |
| CN102562658B (en) | Centrifugal fan impeller for air cooling refrigerator | |
| CN205639069U (en) | Movable vane, guiding subassembly and axial compressor cabinet -type air conditioner of axial compressor cabinet -type air conditioner | |
| CN110985412A (en) | Low-noise multi-wing centrifugal fan based on asymmetric impeller | |
| CN209925294U (en) | High-efficient single-suction centrifugal fan impeller and centrifugal fan | |
| CN205876800U (en) | Machine in tubular wine wheel, through -flow fan and air conditioning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |