IT1049623B - Axial ventilating fan blade attachment system - has root of each blade bolted between wedges in hole in hub - Google Patents
Axial ventilating fan blade attachment system - has root of each blade bolted between wedges in hole in hubInfo
- Publication number
- IT1049623B IT1049623B IT2825075A IT2825075A IT1049623B IT 1049623 B IT1049623 B IT 1049623B IT 2825075 A IT2825075 A IT 2825075A IT 2825075 A IT2825075 A IT 2825075A IT 1049623 B IT1049623 B IT 1049623B
- Authority
- IT
- Italy
- Prior art keywords
- hub
- root
- blade
- blades
- wedges
- Prior art date
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The axial ventilation fan in which the number of blades can be varied without dismantling the rotor, has the roots of the blades retained in holes in the hub. The hub has a main shroud integral with the annular hub portion, and a shallower shroud portion which bolts onto the main portion, the bolts passing through the roots of the blades, and at the same time retaining a wedge block against each face of each blade root, fitting into a cylindrical hole for each root. The bolts can pass through slotted holes to permit play of the locking elements. In an alternative design, the wedge blocks can be shaped to permit an adjustment of the angle of the blade.
Priority Applications (20)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AR261003A AR206444A1 (en) | 1974-10-31 | 1975-01-01 | IMPROVEMENTS IN FANS WITH VARIABLE ADJUSTMENT BLADES |
IT2825075A IT1049623B (en) | 1975-10-14 | 1975-10-14 | Axial ventilating fan blade attachment system - has root of each blade bolted between wedges in hole in hub |
GB43271/75A GB1527623A (en) | 1974-10-31 | 1975-10-22 | Axial flow fan |
FI752961A FI56724C (en) | 1974-10-31 | 1975-10-22 | AXIALFLAEKT MED FLERA SKILT JUSTERBARA BLAD |
NL7512575A NL7512575A (en) | 1974-10-31 | 1975-10-28 | AXIAL FAN WITH ADJUSTABLE RUSH BLADES. |
US05/626,067 US4053259A (en) | 1974-10-31 | 1975-10-28 | Axial fan adjustable pitch connectable blades |
BE161315A BE834945A (en) | 1974-10-31 | 1975-10-28 | AXIAL FAN WITH VARIABLE TIMING BLADE |
CA238,702A CA1050946A (en) | 1974-10-31 | 1975-10-28 | Axial fan with adjustable pitch connectable blades |
SE7512036A SE7512036L (en) | 1974-10-31 | 1975-10-28 | FLEKT |
DE19752548372 DE2548372A1 (en) | 1974-10-31 | 1975-10-29 | AXIAL FAN WITH BLADES THAT CAN BE LOCKED AT ANY ADJUSTMENT ANGLE |
NO753630A NO146071C (en) | 1974-10-31 | 1975-10-29 | FANS |
ES442180A ES442180A1 (en) | 1974-10-31 | 1975-10-29 | Axial fan adjustable pitch connectable blades |
FR7533089A FR2289775A1 (en) | 1974-10-31 | 1975-10-29 | AXIAL FAN WITH VARIABLE TIMING BLADE WHEN STOPPED |
DK487975AA DK142629B (en) | 1974-10-31 | 1975-10-30 | Axial fan wheel comprising blades with adjustable pitch. |
AT827475A AT344305B (en) | 1974-10-31 | 1975-10-30 | AXIAL FAN |
AU86164/75A AU493706B2 (en) | 1975-10-30 | An axial flow fan having adjustable pitch connectable blades variable in number | |
CH1406575A CH597521A5 (en) | 1974-10-31 | 1975-10-30 | |
JP50130588A JPS5199311A (en) | 1974-10-31 | 1975-10-31 | |
BR7507206*A BR7507206A (en) | 1974-10-31 | 1975-10-31 | AXIAL FAN WITH VARIABLE ASSEMBLY PAS, AT REST |
YU02756/75A YU275675A (en) | 1974-10-31 | 1975-10-31 | Axial ventilator having blades fixable and adjustable in various directions at idle ventilator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2825075A IT1049623B (en) | 1975-10-14 | 1975-10-14 | Axial ventilating fan blade attachment system - has root of each blade bolted between wedges in hole in hub |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1049623B true IT1049623B (en) | 1981-02-10 |
Family
ID=11223224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2825075A IT1049623B (en) | 1974-10-31 | 1975-10-14 | Axial ventilating fan blade attachment system - has root of each blade bolted between wedges in hole in hub |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1049623B (en) |
-
1975
- 1975-10-14 IT IT2825075A patent/IT1049623B/en active
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