NL7512418A - NOISE REDUCING RING FOR THROWTH PROPELLER. - Google Patents

NOISE REDUCING RING FOR THROWTH PROPELLER.

Info

Publication number
NL7512418A
NL7512418A NL7512418A NL7512418A NL7512418A NL 7512418 A NL7512418 A NL 7512418A NL 7512418 A NL7512418 A NL 7512418A NL 7512418 A NL7512418 A NL 7512418A NL 7512418 A NL7512418 A NL 7512418A
Authority
NL
Netherlands
Prior art keywords
throwth
propeller
noise reducing
reducing ring
ring
Prior art date
Application number
NL7512418A
Other languages
Dutch (nl)
Original Assignee
Sasakura Eng Co Ltd
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 Sasakura Eng Co Ltd filed Critical Sasakura Eng Co Ltd
Publication of NL7512418A publication Critical patent/NL7512418A/en

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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material
NL7512418A 1974-11-05 1975-10-23 NOISE REDUCING RING FOR THROWTH PROPELLER. NL7512418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49127804A JPS5153606A (en) 1974-11-05 1974-11-05 Puroperafuanno soonboshofuanringu

Publications (1)

Publication Number Publication Date
NL7512418A true NL7512418A (en) 1976-05-07

Family

ID=14969076

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7512418A NL7512418A (en) 1974-11-05 1975-10-23 NOISE REDUCING RING FOR THROWTH PROPELLER.

Country Status (7)

Country Link
JP (1) JPS5153606A (en)
BR (1) BR7507271A (en)
DE (1) DE2548999B2 (en)
FR (1) FR2290589A1 (en)
GB (1) GB1514584A (en)
IT (1) IT1049003B (en)
NL (1) NL7512418A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5380106U (en) * 1976-12-07 1978-07-04
ZA783845B (en) * 1977-07-13 1979-07-25 Carrier Corp Pressure variation absorber
FR2414649A1 (en) * 1978-01-12 1979-08-10 Etri Sa Axial flow ventilator fan - has shroud in square housing with sound absorbing material in corner spaces
DE3927791A1 (en) * 1989-08-23 1991-02-28 Gebhardt Ventilatoren AXIAL FAN
GB2330624A (en) * 1997-10-23 1999-04-28 Wang Samw Hong Jen Fan device with noise reduction
NL1034926C2 (en) * 2008-01-18 2009-07-21 Holland Conditioning Parkeersystemen Bv Fan device with motor suspension.
IT1403249B1 (en) * 2010-11-19 2013-10-17 Luve Spa MUFFLER DEVICE, PARTICULARLY FOR FANS OF AERO-EXCHANGER AND SIMILAR.
CN104454587B (en) * 2014-11-12 2017-02-08 华为技术有限公司 Fan
GB201707836D0 (en) * 2017-05-16 2017-06-28 Oscar Propulsion Ltd Outlet guide vanes

Also Published As

Publication number Publication date
FR2290589B3 (en) 1979-09-21
BR7507271A (en) 1976-08-03
DE2548999B2 (en) 1978-12-14
IT1049003B (en) 1981-01-20
GB1514584A (en) 1978-06-14
DE2548999A1 (en) 1976-05-13
JPS5153606A (en) 1976-05-12
FR2290589A1 (en) 1976-06-04

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