GB312748A - Improvements in and relating to the blades of fans or ventilators - Google Patents
Improvements in and relating to the blades of fans or ventilatorsInfo
- Publication number
- GB312748A GB312748A GB980328A GB980328A GB312748A GB 312748 A GB312748 A GB 312748A GB 980328 A GB980328 A GB 980328A GB 980328 A GB980328 A GB 980328A GB 312748 A GB312748 A GB 312748A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blades
- increase
- width
- tip
- hub
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/327—Rotors specially for elastic fluids for axial flow pumps for axial flow fans with non identical blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
312,748. Adamcikas, M., and Massera, G. March 31, 1928. Impeller blades.-The blades of a screw fan increase gradually from the tip to the hub in both width and geometrical pitch, and are at their maximum at the cross-section lying on the hub itself. Where short and long blades are alternatively disposed the sum of the widths within the circle traced by the tips of the short blades continuously increase to the hub. The blades 12, 13, Fig. 5, increase in width and pitch from the tip to the root, the increase in width being according to a straight line law. In a modification, Fig. 7, the blades 20, 21, 22, 23 follow this law within the limit of the tip circle of the small blade. In another form the variation is only true of the inner half of the blade, the outer half of the blade being of normal shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB980328A GB312748A (en) | 1928-03-31 | 1928-03-31 | Improvements in and relating to the blades of fans or ventilators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB980328A GB312748A (en) | 1928-03-31 | 1928-03-31 | Improvements in and relating to the blades of fans or ventilators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB312748A true GB312748A (en) | 1929-06-06 |
Family
ID=9879071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB980328A Expired GB312748A (en) | 1928-03-31 | 1928-03-31 | Improvements in and relating to the blades of fans or ventilators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB312748A (en) |
-
1928
- 1928-03-31 GB GB980328A patent/GB312748A/en not_active Expired
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