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 flap

Info

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
Application number
GBGB0222336.0A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GBGB0222336.0A priority Critical patent/GB0222336D0/en
Publication of GB0222336D0 publication Critical patent/GB0222336D0/en
Priority to GB0320926A priority patent/GB2395524B/en
Ceased legal-status Critical Current

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
    • F04D29/40—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)
GBGB0222336.0A 2002-09-26 2002-09-26 A positive closing air pressure operated static pressure regain auto-changeover flap Ceased GB0222336D0 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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)