GB788581A - Improvements in and relating to fans and ventilating plants - Google Patents
Improvements in and relating to fans and ventilating plantsInfo
- Publication number
- GB788581A GB788581A GB3124/56A GB312456A GB788581A GB 788581 A GB788581 A GB 788581A GB 3124/56 A GB3124/56 A GB 3124/56A GB 312456 A GB312456 A GB 312456A GB 788581 A GB788581 A GB 788581A
- Authority
- GB
- United Kingdom
- Prior art keywords
- volute
- conical
- wall
- point
- fans
- 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
- 238000011144 upstream manufacturing Methods 0.000 abstract 3
- 241000196324 Embryophyta Species 0.000 abstract 1
- 240000008881 Oenanthe javanica Species 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
788,581. Helico-centrifugal fans. SOC. D'ETUDES & DE REALISATIONS INDUSTRIELLES (SERI) FOURNIER & MOUILLON. Jan. 31, 1956 [Feb. 24, 1955], No. 3124/56. Class 110 (1). A fan comprises an impeller having helical blades inclined in the upstream direction from root to tip and a volute surrounding the blades to collect the fluid delivered therefrom in a direction diverging from the fan axis, the centre line of the volute having a shape similar to that of a conical spiral so that a point moving downstream on this centre line moves axially and radially outwards, while the cross-section of the volute at the point progressively increases. A mine ventilation plant comprises a suction pipe 3, Fig. 1, dividing into two conical branches 4, 5 which may be separately closed by gate valves 6, 7 and which lead to separate fans 1, 2. Each volute 10 or 11 is continued by a substantially vertical delivery duct 8 or 9. The ducts 8, 9 are of increasing cross-sectional area and decreasing curvature, becoming straight and vertical at their outlets, and are supported by a common framework 12, Figs. 1 and 2. Each fan comprises helical blades 13, Fig. 4, inclined in the upstream direction and adjustably pivotally mounted on a conical hub 14 carried by the shaft 15 of a motor 16. The radially outer wall 18 of each volute 10 or 11 is a spiral surface which commences at a point 19 on the intersection of the conical branch 4 or 5 with the conical upstream wall 17 of the volute, and as its radial distance from the fan axis progressively increases, its intersection 20 with the conical wall 17 moves axially away from the impeller. The radially inner wall 21 of the volute forms an extension of the conical surface of the hub 14. The downstream wall 22 of the volute is a helical surface.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR788581X | 1955-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB788581A true GB788581A (en) | 1958-01-02 |
Family
ID=9219634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3124/56A Expired GB788581A (en) | 1955-02-24 | 1956-01-31 | Improvements in and relating to fans and ventilating plants |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB788581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013120623A2 (en) * | 2012-02-17 | 2013-08-22 | Ziehl-Abegg Ag | Diffusor, ventilator having such a diffusor, and device having such ventilators |
-
1956
- 1956-01-31 GB GB3124/56A patent/GB788581A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013120623A2 (en) * | 2012-02-17 | 2013-08-22 | Ziehl-Abegg Ag | Diffusor, ventilator having such a diffusor, and device having such ventilators |
| WO2013120623A3 (en) * | 2012-02-17 | 2014-08-07 | Ziehl-Abegg Ag | Diffusor, ventilator having such a diffusor, and device having such ventilators |
| CN104302927A (en) * | 2012-02-17 | 2015-01-21 | 施乐百欧洲公司 | Diffusor, ventilator having such a diffusor, and device having such ventilators |
| RU2620308C2 (en) * | 2012-02-17 | 2017-05-24 | Циль-Абегг АГ | Fan stack, fan with such stack, and device with such fans |
| US10197070B2 (en) | 2012-02-17 | 2019-02-05 | Zieh1-Abegg SE | Diffusor, ventilator having such a diffusor, and device having such ventilators |
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