EP0099615A3 - Centrifugal fan with flow control - Google Patents
Centrifugal fan with flow control Download PDFInfo
- Publication number
- EP0099615A3 EP0099615A3 EP83301462A EP83301462A EP0099615A3 EP 0099615 A3 EP0099615 A3 EP 0099615A3 EP 83301462 A EP83301462 A EP 83301462A EP 83301462 A EP83301462 A EP 83301462A EP 0099615 A3 EP0099615 A3 EP 0099615A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- impeller
- centrifugal fan
- inner edges
- flow control
- 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- Withdrawn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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A centrifugal fan having the inner edges of the impeller
blades (7) extending parallel to the impeller axis incorporates
a circular damper plate (11) supported coaxially within the
array of blades with its edge closely adjacent the inner edges
of the blades, and movable in an axial direction so as to vary
the useful width of the blades and thereby the flow rate. The
damper plate, being separate from the impeller (2), may be
supported in a non-rotatable manner and enables the fan to
operate at an efficiency comparable with one having a radial
vane damper, but is simpler mechanically as it requires only
a single primary moving part.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8212312 | 1982-04-28 | ||
GB8212312 | 1982-04-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0099615A2 EP0099615A2 (en) | 1984-02-01 |
EP0099615A3 true EP0099615A3 (en) | 1984-08-08 |
Family
ID=10530035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83301462A Withdrawn EP0099615A3 (en) | 1982-04-28 | 1983-03-16 | Centrifugal fan with flow control |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0099615A3 (en) |
JP (1) | JPS58190599A (en) |
AU (1) | AU555454B2 (en) |
CA (1) | CA1218635A (en) |
DK (1) | DK161283A (en) |
HK (1) | HK70486A (en) |
MY (1) | MY8700205A (en) |
NO (1) | NO831256L (en) |
NZ (1) | NZ203561A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2224076A (en) * | 1988-08-03 | 1990-04-25 | Atomic Energy Authority Uk | Controlling pumps |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1834959A (en) * | 1929-02-14 | 1931-12-08 | Comb Eer Inc | Blower |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2311061A1 (en) * | 1973-03-06 | 1974-09-12 | Maschf Augsburg Nuernberg Ag | DEVICE FOR SEALING AND SECURING A CYLINDER LID |
-
1983
- 1983-03-14 NZ NZ20356183A patent/NZ203561A/en unknown
- 1983-03-16 EP EP83301462A patent/EP0099615A3/en not_active Withdrawn
- 1983-03-28 CA CA000424692A patent/CA1218635A/en not_active Expired
- 1983-04-08 NO NO831256A patent/NO831256L/en unknown
- 1983-04-13 DK DK161283A patent/DK161283A/en not_active IP Right Cessation
- 1983-04-15 JP JP6686183A patent/JPS58190599A/en active Pending
- 1983-04-28 AU AU14031/83A patent/AU555454B2/en not_active Ceased
-
1986
- 1986-09-18 HK HK70486A patent/HK70486A/en not_active IP Right Cessation
-
1987
- 1987-12-30 MY MY8700205A patent/MY8700205A/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1834959A (en) * | 1929-02-14 | 1931-12-08 | Comb Eer Inc | Blower |
Also Published As
Publication number | Publication date |
---|---|
CA1218635A (en) | 1987-03-03 |
NO831256L (en) | 1983-10-31 |
JPS58190599A (en) | 1983-11-07 |
DK161283A (en) | 1983-10-29 |
HK70486A (en) | 1986-09-26 |
MY8700205A (en) | 1987-12-31 |
AU555454B2 (en) | 1986-09-25 |
EP0099615A2 (en) | 1984-02-01 |
DK161283D0 (en) | 1983-04-13 |
AU1403183A (en) | 1983-11-03 |
NZ203561A (en) | 1986-04-11 |
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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): AT BE CH DE FR IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19840808 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19851007 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CORY, WILLIAM THOMAS WORTHINGTON |