CN200982316Y - Stepped volute centrifugal fan - Google Patents
Stepped volute centrifugal fan Download PDFInfo
- Publication number
- CN200982316Y CN200982316Y CN 200620155134 CN200620155134U CN200982316Y CN 200982316 Y CN200982316 Y CN 200982316Y CN 200620155134 CN200620155134 CN 200620155134 CN 200620155134 U CN200620155134 U CN 200620155134U CN 200982316 Y CN200982316 Y CN 200982316Y
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- China
- Prior art keywords
- spiral case
- side wall
- wall surface
- volute
- end surface
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- Expired - Lifetime
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- 230000008676 import Effects 0.000 claims description 3
- 241000826860 Trapezium Species 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A stepped volute centrifugal fan comprises a centrifugal impeller, a volute lower end face, a volute side wall face, a volute upper end face, a volute outlet and a circular volute inlet, wherein the volute upper end face is arranged in parallel with the volute lower end face; through the axial trapezoidal structure or the stepped structure shape of the volute, the pressure distribution in the volute is effectively improved, the airflow flow is optimized, the vortex and the internal leakage are reduced, and therefore the efficiency of the fan is effectively improved, and the aerodynamic noise of the fan is reduced.
Description
[technical field]
The utility model relates to a kind of multi-wing centrifugal fan, especially a kind of cascade spiral case centrifugal blower.
[background technique]
At present, corresponding to the designed worm frame of multiple wing rectangle centrifugal impeller is the rectangular configuration of rule substantially, but by visual research to the centrifugal blower flow field, find that there is tangible three-dimensional character in the centrifugal blower internal flow, be that air-flow easily forms abnormal flow such as eddy current, backflow in the volute of blower chamber of rule, influence the noise and the efficient of blower fan.
[model utility content]
The utility model is the trapezium structure or the hierarchic structure on inclined-plane by adjusting spiral case axial bore structure mainly, so that regulate the field pattern of spiral case internal pressure, optimize air current flow, thereby improve centrifugal blower efficient and reduce noise, a kind of cascade spiral case centrifugal blower is provided.
In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposals to realize:
A kind of cascade spiral case centrifugal blower, the spiral case upper-end surface, spiral case outlet and the circular volute import that comprise centrifugal impeller, spiral case lower end surface, spiral case side wall surface, be arranged in parallel with the spiral case lower end surface, the side that it is characterized in that described boss shape spiral case inlet is a plane of inclination, and described spiral case side wall surface is continuous inclined-plane, α angle by spiral case upper-end surface to angle of inclination, spiral case lower end surface or is at least a hierarchic structure and forms.
Aforesaid a kind of cascade spiral case centrifugal blower is characterized in that the span of described inclined angle alpha is ± 30 °.
Aforesaid a kind of cascade spiral case centrifugal blower is characterized in that described spiral case side wall surface, spiral case upper-end surface and spiral case inlet are that center line is symmetrical arranged with the base of spiral case side wall surface.
Aforesaid a kind of cascade spiral case centrifugal blower, it is characterized in that described spiral case side wall surface, spiral case upper-end surface and spiral case inlet are the asymmetric setting of center line with the base of spiral case side wall surface, the inclined-plane tilt angle alpha of promptly described spiral case side wall surface and β do not wait or the hierarchic structure number of described spiral case side wall surface both sides does not wait.
The beneficial effects of the utility model are:
The utility model has effectively improved the spiral case internal pressure and has distributed by adjusting the spiral case cross section structure, improves air current flow, reveals in the minimizing eddy current reaches, and effectively improves fan efficiency and reduces the blower fan aerodynamic noise.
[description of drawings]
Fig. 1 is the structural representation of the trapezoidal spiral case of the utility model single suction;
Fig. 2 is the side view of the trapezoidal spiral case of the utility model single suction;
Fig. 3 is the structural representation of the utility model single suction multi-ladder spiral case;
Fig. 4 is the side view of the utility model single suction multi-ladder spiral case;
Fig. 5 is the structural representation of the trapezoidal symmetrical ladder spiral case of the utility model double suction;
Fig. 6 is the structural representation of the multistage symmetrical ladder spiral case of the utility model double suction.
Among the figure:
1: centrifugal impeller 2: the spiral case lower end surface
3: spiral case side wall surface 4: the spiral case upper-end surface
5: spiral case outlet 6: spiral case inlet
7: plane of inclination 8: inclined-plane
9: hierarchic structure 10: base
[embodiment]
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
A kind of cascade spiral case centrifugal blower, as Fig. 1 to Fig. 4, the spiral case upper-end surface 4, spiral case outlet 5 and the circular volute import 6 that comprise centrifugal impeller 1, spiral case lower end surface 2, spiral case side wall surface 3, be arranged in parallel with spiral case lower end surface 2, the side of described boss shape spiral case inlet 6 is a plane of inclination 7, described spiral case side wall surface 3 is continuous inclined-plane, α angle 8 by spiral case upper-end surface 4 to 2 tilt angle, spiral case lower end surface or is at least a hierarchic structure 9 and forms that the span of described inclined angle alpha is ± 30 °.
As shown in Figure 5 and Figure 6, described spiral case side wall surface 3, spiral case upper-end surface 4 and spiral case inlet 6 can be that center line is symmetrical arranged with the base 10 of spiral case side wall surface 3; Described spiral case side wall surface 3, spiral case upper-end surface 4 and spiral case inlet 6 can be the asymmetric setting of center line with the base 10 of spiral case side wall surface 3 also, be inclined-plane 8 tilt angle alpha of described spiral case side wall surface 3 and β does not wait or hierarchic structure 9 numbers of described spiral case side wall surface 3 both sides do not wait, wherein the span of angle of inclination beta also is ± 30 °.
The utility model is the trapezium structure or hierarchic structure 9 shapes on inclined-plane 8 by adjusting the spiral case axial arrangement, effectively having improved the spiral case internal pressure distributes, optimize air current flow, reduce eddy current and interior the leakage, thereby effectively improve fan efficiency and reduce the blower fan aerodynamic noise.
Obviously, according to basic fundamental design of the present utility model, those of ordinary skill in the art need not can associate some other embodiment by creative work, and these all should belong to protection domain of the present utility model.
Claims (4)
1, a kind of cascade spiral case centrifugal blower, the spiral case upper-end surface (4), spiral case outlet (5) and the circular volute import (6) that comprise centrifugal impeller (1), spiral case lower end surface (2), spiral case side wall surface (3), be arranged in parallel with spiral case lower end surface (2), the side that it is characterized in that described boss shape spiral case inlet (6) is a plane of inclination (7), and described spiral case side wall surface (3) is continuous inclined-plane, α angle (8) by spiral case upper-end surface (4) to angle of inclination, spiral case lower end surface (2) or is at least a hierarchic structure (9) and forms.
2, a kind of cascade spiral case centrifugal blower according to claim 1 is characterized in that the span of described inclined angle alpha is ± 30 °.
3, a kind of cascade spiral case centrifugal blower according to claim 2 is characterized in that described spiral case side wall surface (3), spiral case upper-end surface (4) and spiral case inlet (6) are that center line is symmetrical arranged with the base (10) of spiral case side wall surface (3).
4, a kind of cascade spiral case centrifugal blower according to claim 2, it is characterized in that described spiral case side wall surface (3), spiral case upper-end surface (4) and spiral case inlet (6) are the asymmetric setting of center line with the base (10) of spiral case side wall surface (3), inclined-plane (8) tilt angle alpha of promptly described spiral case side wall surface (3) and β do not wait or hierarchic structure (9) number of described spiral case side wall surface (3) both sides does not wait.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620155134 CN200982316Y (en) | 2006-12-20 | 2006-12-20 | Stepped volute centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620155134 CN200982316Y (en) | 2006-12-20 | 2006-12-20 | Stepped volute centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200982316Y true CN200982316Y (en) | 2007-11-28 |
Family
ID=38909474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620155134 Expired - Lifetime CN200982316Y (en) | 2006-12-20 | 2006-12-20 | Stepped volute centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200982316Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536907A (en) * | 2010-12-03 | 2012-07-04 | Lg电子株式会社 | Air blower for an air conditioner |
| CN105134657A (en) * | 2015-09-11 | 2015-12-09 | 珠海格力电器股份有限公司 | Volute structure |
| CN105736469A (en) * | 2016-04-05 | 2016-07-06 | 珠海格力电器股份有限公司 | Fan, fan volute and air conditioner |
| CN107036175A (en) * | 2017-06-13 | 2017-08-11 | 广州海科电子科技有限公司 | Air channel shell and clarifier |
| CN109931294A (en) * | 2017-12-18 | 2019-06-25 | 现代自动车株式会社 | Binary vortices formula bidirectional blower |
-
2006
- 2006-12-20 CN CN 200620155134 patent/CN200982316Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536907A (en) * | 2010-12-03 | 2012-07-04 | Lg电子株式会社 | Air blower for an air conditioner |
| CN102536907B (en) * | 2010-12-03 | 2014-12-03 | Lg电子株式会社 | Air blower for an air conditioner |
| US9145900B2 (en) | 2010-12-03 | 2015-09-29 | Lg Electronics Inc. | Air blower for an air conditioner |
| CN105134657A (en) * | 2015-09-11 | 2015-12-09 | 珠海格力电器股份有限公司 | Volute structure |
| CN105134657B (en) * | 2015-09-11 | 2020-09-29 | 珠海格力电器股份有限公司 | Volute structure of single air inlet |
| CN105736469A (en) * | 2016-04-05 | 2016-07-06 | 珠海格力电器股份有限公司 | Fan, fan volute and air conditioner |
| CN105736469B (en) * | 2016-04-05 | 2019-10-18 | 珠海格力电器股份有限公司 | fan, fan volute and air conditioner |
| CN107036175A (en) * | 2017-06-13 | 2017-08-11 | 广州海科电子科技有限公司 | Air channel shell and clarifier |
| CN109931294A (en) * | 2017-12-18 | 2019-06-25 | 现代自动车株式会社 | Binary vortices formula bidirectional blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071128 |
|
| EXPY | Termination of patent right or utility model |