GB0222336D0 - A positive closing air pressure operated static pressure regain auto-changeover flap - Google Patents
A positive closing air pressure operated static pressure regain auto-changeover flapInfo
- Publication number
- GB0222336D0 GB0222336D0 GBGB0222336.0A GB0222336A GB0222336D0 GB 0222336 D0 GB0222336 D0 GB 0222336D0 GB 0222336 A GB0222336 A GB 0222336A GB 0222336 D0 GB0222336 D0 GB 0222336D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- auto
- regain
- closing air
- positive closing
- air pressure
- 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.)
- Ceased
Links
- 230000003068 static effect Effects 0.000 title 1
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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- 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
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/003—Rigid pipes with a rectangular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0222336.0A GB0222336D0 (en) | 2002-09-26 | 2002-09-26 | A positive closing air pressure operated static pressure regain auto-changeover flap |
GB0320926A GB2395524B (en) | 2002-09-26 | 2003-09-08 | Static Pressure regain foil for ductwork or pipework |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0222336.0A GB0222336D0 (en) | 2002-09-26 | 2002-09-26 | A positive closing air pressure operated static pressure regain auto-changeover flap |
Publications (1)
Publication Number | Publication Date |
---|---|
GB0222336D0 true GB0222336D0 (en) | 2002-11-06 |
Family
ID=9944794
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB0222336.0A Ceased GB0222336D0 (en) | 2002-09-26 | 2002-09-26 | A positive closing air pressure operated static pressure regain auto-changeover flap |
GB0320926A Expired - Fee Related GB2395524B (en) | 2002-09-26 | 2003-09-08 | Static Pressure regain foil for ductwork or pipework |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0320926A Expired - Fee Related GB2395524B (en) | 2002-09-26 | 2003-09-08 | Static Pressure regain foil for ductwork or pipework |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB0222336D0 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106870464A (en) * | 2015-12-14 | 2017-06-20 | 华南理工大学 | A kind of bionical streamlined air channel of gradual change noise reduction |
CN111022381B (en) * | 2020-01-03 | 2021-10-08 | 宁波方太厨具有限公司 | Flow guide noise reduction device and range hood applying same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB616163A (en) * | 1943-01-19 | 1949-01-18 | Groupement Francais Pour Le Developpement Des Recherches Aeronautiques | Means for avoid separation and turbulence in fluids moving with respect to solid surfaces |
DE2929140A1 (en) * | 1979-07-19 | 1981-02-12 | Kurt Dr Ing Zenkner | HOUSING FOR A CROSS-BLOW BLOWER, IN PARTICULAR FOR USE WITH ROOF FANS |
US4891169A (en) * | 1988-11-16 | 1990-01-02 | Amsted Industries Inc. | Transition duct for centrifugal fan |
US5188510A (en) * | 1990-11-21 | 1993-02-23 | Thomas R. Norris | Method and apparatus for enhancing gas turbo machinery flow |
GB0120757D0 (en) * | 2001-08-25 | 2001-10-17 | Bayram Peter J | A positive closing air pressure operated static pressure regain auto-changeover flap |
-
2002
- 2002-09-26 GB GBGB0222336.0A patent/GB0222336D0/en not_active Ceased
-
2003
- 2003-09-08 GB GB0320926A patent/GB2395524B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB0320926D0 (en) | 2003-10-08 |
GB2395524A (en) | 2004-05-26 |
GB2395524B (en) | 2006-04-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AT | Applications terminated before publication under section 16(1) |