GB1370573A - Axial flow fan assembly - Google Patents
Axial flow fan assemblyInfo
- Publication number
- GB1370573A GB1370573A GB2402672A GB2402672A GB1370573A GB 1370573 A GB1370573 A GB 1370573A GB 2402672 A GB2402672 A GB 2402672A GB 2402672 A GB2402672 A GB 2402672A GB 1370573 A GB1370573 A GB 1370573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impeller
- blades
- impellers
- axial
- flow fan
- 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
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1370573 Axial-flow fans HUDSON PRODUCTS CORP 22 May 1972 [20 Dec 1971] 24026/72 Heading F1C An axial flow fan comprises first and second impellers 19, 20 of equal outer diameter and rotating at a desired speed within a ring 18 of constant inner diameter, the blades of the second impeller being of greater average pitch than those of the first impeller, and the axial spacing between the impellers being considerably less than would be necessary for the impellers to do the same useful work with the blades of the second impeller at the same average pitch as the blades of the first impeller and rotating at the desired speed. For 14 foot diameter impellers, the centres of the hubs may be spaced apart by 20 inches, whereby the air entering the second impeller retains most of the whirl velocity with which it left the first impeller, this necessitating the greater blade pitch provided on the second impeller. The blades of the second impeller are offset circumferentially relative to those of the first impeller to avoid the most turbulent part of the air stream. As shown, the fan may be used to draw air through a heat exchanger 11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20992371A | 1971-12-20 | 1971-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1370573A true GB1370573A (en) | 1974-10-16 |
Family
ID=22780897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2402672A Expired GB1370573A (en) | 1971-12-20 | 1972-05-22 | Axial flow fan assembly |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS4869108A (en) |
| AU (1) | AU451908B2 (en) |
| BE (1) | BE785017A (en) |
| CA (1) | CA973519A (en) |
| DE (1) | DE2209886A1 (en) |
| ES (1) | ES403623A1 (en) |
| FR (1) | FR2165368A5 (en) |
| GB (1) | GB1370573A (en) |
| IT (1) | IT958183B (en) |
| NL (1) | NL7202641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211558A (en) * | 1987-10-26 | 1989-07-05 | Deutsche Forsch Luft Raumfahrt | Bladed rotor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2298576A (en) * | 1941-07-17 | 1942-10-13 | Internat Engineering Inc | Air handling apparatus |
-
1972
- 1972-02-29 NL NL7202641A patent/NL7202641A/xx unknown
- 1972-03-01 DE DE19722209886 patent/DE2209886A1/en active Pending
- 1972-05-09 CA CA141,736A patent/CA973519A/en not_active Expired
- 1972-05-11 AU AU42183/72A patent/AU451908B2/en not_active Expired
- 1972-05-22 GB GB2402672A patent/GB1370573A/en not_active Expired
- 1972-05-22 JP JP4995372A patent/JPS4869108A/ja active Pending
- 1972-05-31 IT IT5065072A patent/IT958183B/en active
- 1972-06-08 ES ES403623A patent/ES403623A1/en not_active Expired
- 1972-06-16 FR FR7221834A patent/FR2165368A5/fr not_active Expired
- 1972-06-16 BE BE785017A patent/BE785017A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211558A (en) * | 1987-10-26 | 1989-07-05 | Deutsche Forsch Luft Raumfahrt | Bladed rotor |
| GB2211558B (en) * | 1987-10-26 | 1992-07-08 | Deutsche Forsch Luft Raumfahrt | Propeller |
Also Published As
| Publication number | Publication date |
|---|---|
| AU451908B2 (en) | 1974-08-22 |
| CA973519A (en) | 1975-08-26 |
| FR2165368A5 (en) | 1973-08-03 |
| IT958183B (en) | 1973-10-20 |
| AU4218372A (en) | 1973-11-15 |
| DE2209886A1 (en) | 1973-07-05 |
| JPS4869108A (en) | 1973-09-20 |
| NL7202641A (en) | 1972-05-25 |
| ES403623A1 (en) | 1975-05-01 |
| BE785017A (en) | 1972-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |