EP0155073A3 - Controllable pitch fans - Google Patents
Controllable pitch fans Download PDFInfo
- Publication number
- EP0155073A3 EP0155073A3 EP85300531A EP85300531A EP0155073A3 EP 0155073 A3 EP0155073 A3 EP 0155073A3 EP 85300531 A EP85300531 A EP 85300531A EP 85300531 A EP85300531 A EP 85300531A EP 0155073 A3 EP0155073 A3 EP 0155073A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- blades
- combination
- hub
- pitch
- 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.)
- Withdrawn
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
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
- F04D29/362—Blade mountings adjustable during rotation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The pitch of the blades (22) of a fan is adjusted by a
pneumatic piston and cylinder combination (48, 50) which
rotates with the hub (20) of the fan. The cylinder element (50)
is reciprocable axially with respect to the hub and is connected
to the blades by a cam groove (92) in the cylinder element, and
a plurality of cam followers (98) engaged in the groove for
translating axial movement of the cylinder in one or other
direction into pivotal movement of the blades to adjust the
pitch of the blades. Pneumatic pressure is applied to the piston
and cylinder combination to reciprocate the cylinder element
(50) via a rotary union (82) which accommodates rotation of
the combination.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58916684A | 1984-03-13 | 1984-03-13 | |
US589166 | 1984-03-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0155073A2 EP0155073A2 (en) | 1985-09-18 |
EP0155073A3 true EP0155073A3 (en) | 1986-12-17 |
Family
ID=24356887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85300531A Withdrawn EP0155073A3 (en) | 1984-03-13 | 1985-01-25 | Controllable pitch fans |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0155073A3 (en) |
JP (1) | JPS60209698A (en) |
AU (1) | AU3697484A (en) |
DK (1) | DK111585A (en) |
NO (1) | NO850940L (en) |
ZA (1) | ZA849335B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4446622A1 (en) * | 1994-12-24 | 1996-06-27 | Klein Schanzlin & Becker Ag | Variable pitch propeller with adjusting mechanism arranged in it |
FR2908451B1 (en) * | 2006-11-09 | 2009-03-20 | Snecma Sa | TURBOPROPULSEUR COMPRISING AN ADJUSTABLE ORIENTATION BLADE ASSEMBLY |
CN110056520B (en) * | 2019-03-13 | 2021-02-05 | 咸阳职业技术学院 | Two-way automatic cleaning and air-changing device based on electronic technology |
CN111911435A (en) * | 2020-08-27 | 2020-11-10 | 吴建林 | Axial flow fan with adjustable motor direct-drive movable blades or adjustable motor shutdown |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1285127A (en) * | 1961-03-30 | 1962-02-16 | Dingler Werke Ag | Blower fins oleo-hydraulic shift device |
FR1585397A (en) * | 1968-11-28 | 1970-01-16 | ||
US3603698A (en) * | 1969-11-19 | 1971-09-07 | Nordisk Ventilator | Axial flow fan wheel |
DE2546161A1 (en) * | 1975-10-15 | 1977-04-21 | Turbo Lufttechnik Gmbh | AXIAL FAN |
GB2077855A (en) * | 1980-06-12 | 1981-12-23 | Howden James & Co Ltd | Reversible Pitch Bladed Rotor |
-
1984
- 1984-11-29 ZA ZA849335A patent/ZA849335B/en unknown
- 1984-12-20 AU AU36974/84A patent/AU3697484A/en not_active Abandoned
-
1985
- 1985-01-14 JP JP60003431A patent/JPS60209698A/en active Pending
- 1985-01-25 EP EP85300531A patent/EP0155073A3/en not_active Withdrawn
- 1985-03-11 NO NO850940A patent/NO850940L/en unknown
- 1985-03-12 DK DK111585A patent/DK111585A/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1285127A (en) * | 1961-03-30 | 1962-02-16 | Dingler Werke Ag | Blower fins oleo-hydraulic shift device |
FR1585397A (en) * | 1968-11-28 | 1970-01-16 | ||
US3603698A (en) * | 1969-11-19 | 1971-09-07 | Nordisk Ventilator | Axial flow fan wheel |
DE2546161A1 (en) * | 1975-10-15 | 1977-04-21 | Turbo Lufttechnik Gmbh | AXIAL FAN |
GB2077855A (en) * | 1980-06-12 | 1981-12-23 | Howden James & Co Ltd | Reversible Pitch Bladed Rotor |
Also Published As
Publication number | Publication date |
---|---|
NO850940L (en) | 1985-09-16 |
DK111585D0 (en) | 1985-03-12 |
DK111585A (en) | 1985-09-14 |
AU3697484A (en) | 1985-09-19 |
EP0155073A2 (en) | 1985-09-18 |
ZA849335B (en) | 1985-07-31 |
JPS60209698A (en) | 1985-10-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): BE CH DE FR GB IT LI NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): BE CH DE FR GB IT LI NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19880112 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HEYL, HARRY E. |