GB816536A - Improvements in or relating to axial-flow fans - Google Patents
Improvements in or relating to axial-flow fansInfo
- Publication number
- GB816536A GB816536A GB21092/57A GB2109257A GB816536A GB 816536 A GB816536 A GB 816536A GB 21092/57 A GB21092/57 A GB 21092/57A GB 2109257 A GB2109257 A GB 2109257A GB 816536 A GB816536 A GB 816536A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fan
- ring
- axial
- curvature
- outlet
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
- F04D29/547—Ducts having a special shape in order to influence fluid flow
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
816,536. Axial-flow fans. BAHCO A.B. July 3, 1957 [July 9, 1956], No. 21092/57. Class 110 (1). An axial-flow fan comprises a ring 1 forming the fan housing and intended for fitting the fan to a wall, the inner periphery 8 of the ring widening, over the extent of the impeller blades, in a curved fashion from the fan outlet 6 towards the inlet at least up to a point level with the leading edges of the blades, and the blade tips 13 corresponding in shape to the curvature of the ring. This construction reduces noise. The radius of curvature of the inner periphery 8 is at least 0.1 D and preferably is between 0.1 D and 0.3 D, where D is the diameter of the outlet 6. The radius of curvature of the front part 9 of the ring 1 is at least 0.02 D and preferably is between 0.02 D and 0.06 D. The largest diameter of the impeller hub 11 is between 0.4 D and 0.8 D. The inner periphery 8 is parallel to the fan shaft at the outlet 6, while a tangent to the part 9 in at least one point is prependicular to the shaft.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE816536X | 1956-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816536A true GB816536A (en) | 1959-07-15 |
Family
ID=20345537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21092/57A Expired GB816536A (en) | 1956-07-09 | 1957-07-03 | Improvements in or relating to axial-flow fans |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816536A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3433403A (en) * | 1966-12-16 | 1969-03-18 | Lau Blower Co | Fan inlet shroud |
| EP2075473A1 (en) * | 2007-12-24 | 2009-07-01 | LG Electronics Inc. | Fan Module |
| WO2021147497A1 (en) * | 2020-01-20 | 2021-07-29 | 珠海格力电器股份有限公司 | Flow guide device, fan assembly, and electric appliance |
-
1957
- 1957-07-03 GB GB21092/57A patent/GB816536A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3433403A (en) * | 1966-12-16 | 1969-03-18 | Lau Blower Co | Fan inlet shroud |
| EP2075473A1 (en) * | 2007-12-24 | 2009-07-01 | LG Electronics Inc. | Fan Module |
| WO2021147497A1 (en) * | 2020-01-20 | 2021-07-29 | 珠海格力电器股份有限公司 | Flow guide device, fan assembly, and electric appliance |
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