GB347893A - Improvements in or relating to centrifugal fans - Google Patents
Improvements in or relating to centrifugal fansInfo
- Publication number
- GB347893A GB347893A GB14144/30A GB1414430A GB347893A GB 347893 A GB347893 A GB 347893A GB 14144/30 A GB14144/30 A GB 14144/30A GB 1414430 A GB1414430 A GB 1414430A GB 347893 A GB347893 A GB 347893A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scroll
- gate
- fan
- rotor
- entering
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
- F04D29/464—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps adjusting flow cross-section, otherwise than by using adjustable stator blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/51—Inlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
347,893. Centrifugal fans. STURTEVANT CO., B. F., 6, Damon Street, Hyde Park, Boston, U.S.A.-(Assignees of Hagen, H. F. ; Whiting Avenue, Dedham, Massachusetts, U.S.A.) May 8, 1930, No. 14144. Convention date, Feb. 3. [Class 110 (i).] Regulating ; casing8.-A fan has an inlet scroll with a discharge eye leading to the rotor and provided with means for varying the spin velocity of the fluid entering the scroll. A double-entry fan is shown with inlet scrolls 6, 8 on opposite sides of the rotor 4 and the outlet 10. Each scroll has, at its lower end, an entrance chamber 14 with walls 16, 18 shaped as shown in Fig. 3, to form a constricted throat 20. A gate or deflector in the entrance chamber is formed by a curved plate 24 and side plates 28 secured to a shaft 29 which can be rocked by the link 32. A counter-weight 30 is also attached to the shaft 29. A lip 26 at the end of the curved plate 24 conforms to the wall of the throat 20 when the gate is fully open. In this position of the gate, the entering fluid distributes itself round the eye of the fan, which it enters radially. When the gate is moved, say, to the position shown in Fig. 3, the entering fluid is confined to the space adjacent to the outside wall of the scroll, and circulates round the scroll with an increased velocity. Specification 295,018, [Class 110 (i), Centrifugal and screw fans &c.], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US347893XA | 1930-02-03 | 1930-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB347893A true GB347893A (en) | 1931-05-07 |
Family
ID=21878610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14144/30A Expired GB347893A (en) | 1930-02-03 | 1930-05-08 | Improvements in or relating to centrifugal fans |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB347893A (en) |
-
1930
- 1930-05-08 GB GB14144/30A patent/GB347893A/en not_active Expired
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