CN204061318U - Centrifugal fan and electrical product comprising same - Google Patents
Centrifugal fan and electrical product comprising same Download PDFInfo
- Publication number
- CN204061318U CN204061318U CN201420531944.7U CN201420531944U CN204061318U CN 204061318 U CN204061318 U CN 204061318U CN 201420531944 U CN201420531944 U CN 201420531944U CN 204061318 U CN204061318 U CN 204061318U
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- Prior art keywords
- blade
- centrifugal blower
- backward inclined
- wheel disc
- forword vane
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- 230000001154 acute effect Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The application discloses centrifugal fan reaches electrical product including this centrifugal fan, centrifugal fan include the rim plate with set up in a plurality of blades on the rim plate, the blade includes that blade outlet angle is obtuse preceding blade and blade outlet angle be the acute angle backward blade, preceding first end to the blade is close to in the edge part of rim plate, preceding second end to the blade is close to than its first end in the central part of rim plate, backward the first end to the blade with preceding second end to the blade is connected, the second end to the blade is close to than its first end in the central part of rim plate. According to the configuration, the utility model provides a centrifugal fan, its noise at the operation in-process is lower, and air loss is less moreover.
Description
Technical field
The utility model relates to blower fan technical field, particularly relates to a kind of centrifugal blower and comprises the electrical products of this centrifugal blower.
Background technique
Centrifugal blower is widely applied in the electrical products such as air conditioner, kitchen ventilator, gas fan, and the air output of centrifuge and noise figure are the key factors affecting centrifuge quality.
In prior art, as shown in Figure 1, Fig. 1 is centrifugal fan structure schematic diagram in prior art to centrifugal fan structure.Multiple blades 02 that centrifugal blower of the prior art comprises wheel disc 01 and is arranged on wheel disc 01, one end of blade 02 is connected to the edge of wheel disc 01, and the other end extends to the central part of wheel disc 01.
Centrifugal blower of the prior art, its each blade 02 is for bending towards the arc shape blade in same direction, and centrifugal blower noise in rotary course of this kind of structure is comparatively large, and wind loss is larger.
Therefore, how to solve the problem that centrifugal blower noise of the prior art is comparatively large and wind loss is larger, become those skilled in the art's important technological problems to be solved.
Model utility content
The utility model provides a kind of centrifugal blower, and its noise in operation process is lower, and wind loss is less.The utility model additionally provides a kind of electrical products comprising above-mentioned centrifugal blower.
The utility model provides a kind of centrifugal blower, comprise wheel disc and be arranged at the multiple blades on described wheel disc, described blade comprises Forword vane that blade outlet angle is obtuse angle and blade outlet angle is the backward inclined blade of acute angle, the first end of described Forword vane is close to the edge part of described wheel disc, second end of described Forword vane is close to the central part of described wheel disc compared with its first end, the first end of described backward inclined blade is connected with the second end of described Forword vane, and the second end of described backward inclined blade is close to the central part of described wheel disc compared with its first end.
Preferably, described Forword vane and described backward inclined blade are arc shaped blade.
Preferably, the link position of described Forword vane and described backward inclined blade seamlessly transits.
Preferably, the blade outlet angle of described Forword vane is 100 °-170 °.
Preferably, the blade outlet angle of described backward inclined blade is 10 °-80 °.
Preferably, the blade outlet angle of described Forword vane is 120 °-150 °.
Preferably, the blade outlet angle of described backward inclined blade is 30 °-60 °.
Preferably, described Forword vane and described backward inclined blade are planar blade.
The utility model additionally provides a kind of electrical products, comprises centrifugal blower, and described centrifugal blower is the centrifugal blower as above described in any one.
The utility model provides a kind of centrifugal blower, comprise wheel disc and be arranged at the multiple blades on described wheel disc, described blade comprises Forword vane that blade outlet angle is obtuse angle and blade outlet angle is the backward inclined blade of acute angle, the first end of described Forword vane is close to the edge part of described wheel disc, second end of described Forword vane is close to the central part of described wheel disc compared with its first end, the first end of described backward inclined blade is connected with the second end of described Forword vane, and the second end of described backward inclined blade is close to the central part of described wheel disc compared with its first end.It should be noted that, the centrifugal blower that the utility model provides, its each blade includes two-part, is respectively Forword vane and backward inclined blade; Forword vane is connected with backward inclined blade, and namely the second end of Forword vane is connected with the first end of backward inclined blade; And one end of each blade is close to the edge part of wheel disc, the other end is close to the central part of wheel disc, and namely the first end of Forword vane is close to the edge part of wheel disc, and the second end of backward inclined blade is close to the central part of wheel disc.In addition, the exit angle of Forword vane refers to: with the first end of Forword vane for end points to away from wheel disk center direction extend and with Forword vane tangent formation first ray, extend and tangent formation second ray round with the movement locus of Forword vane first end with the sense of rotation that the first end of Forword vane is in reverse to wheel disc for end points, the angle that the first ray and the second ray are formed is the exit angle of Forword vane.In like manner, the exit angle of backward inclined blade refers to: with the first end of backward inclined blade for end points to away from wheel disk center direction extend and with backward inclined blade tangent formation trilete rays, extend and tangent formation four ray round with the movement locus of backward inclined blade first end with the sense of rotation that the first end of backward inclined blade is in reverse to wheel disc for end points, the angle that trilete rays and the 4th ray are formed is the exit angle of backward inclined blade.Due to generally, inlet air flow angle is less, and for avoiding leaf road curvature excessive, Forword vane inlet angle designs larger, the angle of attack is comparatively large, and backward inclined blade in the utility model can adjusting vane inlet angle easily, and then makes blade incidence less, effectively reduce vane inlet impact loss, reduce wind-dryness.Therefore, the centrifugal blower that the utility model provides, it can reduce wind loss, and effectively can reduce the wind-dryness in operation process.
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 embodiment 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 the accompanying drawing provided.
Fig. 1 is centrifugal fan structure schematic diagram in prior art;
Fig. 2 is centrifugal fan structure schematic diagram in the utility model embodiment;
Fig. 3 is the blade outlet angle schematic diagram of Forword vane in the utility model embodiment;
Fig. 4 is the blade outlet angle schematic diagram of backward inclined blade in the utility model embodiment;
Fig. 1:
Wheel disc-01, blade-02;
In Fig. 2-Fig. 4:
Wheel disc-11, blade-12, Forword vane-13, backward inclined blade-14, the first ray-15, the second ray-16, trilete rays-17, the 4th ray-18.
Embodiment
This embodiment provides a kind of centrifugal blower, and its noise in operation process is lower, and wind loss is less.This embodiment additionally provides a kind of electrical products comprising above-mentioned centrifugal blower.
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.
Please refer to Fig. 2-Fig. 4, the centrifugal blower that this embodiment provides, can be applied in the electrical products such as air conditioner, oil hydraulic press, gas fan, multiple blades 12 that centrifugal blower comprises wheel disc 11 and is arranged on wheel disc 11.
Wherein, in this embodiment, the blade 12 of centrifugal blower comprises the backward inclined blade 14 that Forword vane 13 that blade outlet angle is obtuse angle and blade outlet angle are acute angle.
It should be noted that, Forword vane 13 and backward inclined blade 14 include first end and the second end, wherein first end is close to the edge part of wheel disc 11, second end is close to the central part of wheel disc 11, second end of Forword vane 13 is connected with the first end of backward inclined blade 14, and Forword vane 13 is close to the edge part of wheel disc compared with backward inclined blade 14.
In addition, it should be noted that, the exit angle of above-mentioned Forword vane 13 refers to: as shown in Figure 3, in Fig. 3, the direction of arrow represents wheel disc sense of rotation, angle a represents the exit angle of Forword vane, with the first end of Forword vane 13 for end points to away from wheel disc 11 center direction extend and with Forword vane 13 tangent formation first ray 15, extend and tangent formation second ray 16 round with the movement locus of Forword vane 13 first end with the sense of rotation that the first end of Forword vane 13 is in reverse to wheel disc 11 for end points, the angle that first ray 15 and the second ray 16 are formed is the exit angle of Forword vane 13.
In like manner, the exit angle of backward inclined blade 14 refers to: as shown in Figure 4, in Fig. 4, the direction of arrow represents wheel disc sense of rotation, angle b represents the exit angle of backward inclined blade, with the first end of backward inclined blade 14 for end points extends and formation trilete rays 17 tangent with backward inclined blade 14 to the direction away from wheel disc 11 center, extend and tangent formation four ray 18 round with the movement locus of backward inclined blade 14 first end with the sense of rotation that the first end of backward inclined blade 14 is in reverse to wheel disc 11 for end points, the angle that trilete rays 17 and the 4th ray 18 are formed is the exit angle of backward inclined blade 14.
Due to generally, inlet air flow angle is less, and for avoiding leaf road curvature excessive, Forword vane 13 inlet angle designs larger, and the angle of attack can be comparatively large, and then the distinguished and admirable impact existed is comparatively large, the problem that noise is larger.And backward inclined blade 14 in this embodiment can adjusting vane 12 inlet angle easily, and then make blade 12 angle of attack less, effectively reduce blade 12 import impact loss, reduce wind-dryness.Therefore, the centrifugal blower that this embodiment provides, it can reduce wind loss, and effectively can reduce the wind-dryness in operation process.
In the preferred version of this embodiment, Forword vane 13 and backward inclined blade 14 are arc shaped blade.Setting like this, the guide face of Forword vane 13 and backward inclined blade 14 is arc shaped surface, can carry out wind-guiding more swimmingly.Certainly, Forword vane 13 and backward inclined blade 14 also can be other shape, such as, and straight platy structure.
Further, the link position of Forword vane 13 and backward inclined blade 14 seamlessly transits.Setting like this, Forword vane 13 and backward inclined blade 14 are by arc transition, and in wind-guiding process, distinguished and admirablely also can be guided to backward inclined blade 14 by Forword vane 13 smoothly, the resistance run into is less.
In this embodiment, the blade outlet angle of Forword vane 13 is preferably 100 °-170 °, and the blade outlet angle of backward inclined blade 14 is preferably 10 °-80 °.Further, the blade outlet angle of Forword vane 13 can be 120 °-150 °, such as, can be specially 120 °, 130 °, 135 ° etc.Further, the blade outlet angle of backward inclined blade 14 can be 30 °-60 °, such as 30 °, 45 °, 60 ° etc.Setting like this, can reduce wind-dryness and the wind loss of centrifugal blower further.
This embodiment additionally provides a kind of electrical products, comprises centrifugal blower, and this centrifugal blower is centrifugal blower as above.Setting like this, the electrical products that this embodiment provides, the noise of its centrifugal blower in operation process is lower, and wind loss is less.The derivation of the beneficial effect that the derivation of this beneficial effect and above-mentioned centrifugal blower bring is substantially similar, therefore repeats no more herein.
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. a centrifugal blower, comprise wheel disc and be arranged at the multiple blades on described wheel disc, it is characterized in that, described blade comprises Forword vane that blade outlet angle is obtuse angle and blade outlet angle is the backward inclined blade of acute angle, the first end of described Forword vane is close to the edge part of described wheel disc, second end of described Forword vane is close to the central part of described wheel disc compared with its first end, the first end of described backward inclined blade is connected with the second end of described Forword vane, and the second end of described backward inclined blade is close to the central part of described wheel disc compared with its first end.
2. centrifugal blower as claimed in claim 1, it is characterized in that, described Forword vane and described backward inclined blade are arc shaped blade.
3. centrifugal blower as claimed in claim 2, it is characterized in that, the link position of described Forword vane and described backward inclined blade seamlessly transits.
4. centrifugal blower as claimed in claim 1, it is characterized in that, the blade outlet angle of described Forword vane is 100 °-170 °.
5. centrifugal blower as claimed in claim 1, it is characterized in that, the blade outlet angle of described backward inclined blade is 10 °-80 °.
6. the centrifugal blower as described in claim 4 or 5, is characterized in that, the blade outlet angle of described Forword vane is 120 °-150 °.
7. centrifugal blower as claimed in claim 6, it is characterized in that, the blade outlet angle of described backward inclined blade is 30 °-60 °.
8. centrifugal blower as claimed in claim 1, it is characterized in that, described Forword vane and described backward inclined blade are planar blade.
9. electrical products, comprise centrifugal blower, it is characterized in that, described centrifugal blower is the centrifugal blower as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531944.7U CN204061318U (en) | 2014-09-16 | 2014-09-16 | Centrifugal fan and electrical product comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531944.7U CN204061318U (en) | 2014-09-16 | 2014-09-16 | Centrifugal fan and electrical product comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204061318U true CN204061318U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531944.7U Expired - Lifetime CN204061318U (en) | 2014-09-16 | 2014-09-16 | Centrifugal fan and electrical product comprising same |
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| Country | Link |
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| CN (1) | CN204061318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179725A (en) * | 2014-09-16 | 2014-12-03 | 珠海格力电器股份有限公司 | Centrifugal fan and electrical product comprising same |
-
2014
- 2014-09-16 CN CN201420531944.7U patent/CN204061318U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179725A (en) * | 2014-09-16 | 2014-12-03 | 珠海格力电器股份有限公司 | Centrifugal fan and electrical product comprising same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |
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| CX01 | Expiry of patent term |