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GB785501A - Improvements relating to a fan provided with a diffuser - Google Patents

Improvements relating to a fan provided with a diffuser

Info

Publication number
GB785501A
GB785501A GB26537/55A GB2653755A GB785501A GB 785501 A GB785501 A GB 785501A GB 26537/55 A GB26537/55 A GB 26537/55A GB 2653755 A GB2653755 A GB 2653755A GB 785501 A GB785501 A GB 785501A
Authority
GB
United Kingdom
Prior art keywords
diffuser
fan
wall
suction
boundary layer
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
Application number
GB26537/55A
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.)
Licencia Talalmanyokat Ertekesito Vallalat
Original Assignee
Licencia Talalmanyokat Ertekesito Vallalat
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 Licencia Talalmanyokat Ertekesito Vallalat filed Critical Licencia Talalmanyokat Ertekesito Vallalat
Publication of GB785501A publication Critical patent/GB785501A/en
Expired 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
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

785,501. Axial-flow fans. LICENCIA TALALMANYOKAT ERTEKESITO VALLALAT. Sept. 16, 1955 [Dec. 22, 1954; March 1, 1955], No. 26537/55. Class 110 (1). [Also in Group XXXIII] A fan has a diffuser section constructed as a double-walled hollow body, the interior of which connects the pressure side of the fan with the suction side through openings suitable for sucking off the boundary layer and formed in the inner wall of the diffuser section. In Fig. 1, the walls 2 and 4 of the diffuser form a space 5 leading to the suction side of the fan 1 at 22. An axially movable ring 6 is used to control the effective cross-section of the space 5 and control the extent of boundary layer suction. The boundary layer suction orifices are formed by slots 3, as shown, but may be circular openings arranged in a series of parallel circles (Fig. 2, not shown). One wall of the diffuser is of sheet metal which in Fig. 3 (not shown) is the inner wall, having circular perforations the outer wall then being concrete. A spinner 9 rotates with the fan 1, and also has suction orifices 10 leading to a slot 17 as shown. The width of the slits 3, or the number or size of corresponding circular openings, is decreased in the downstream direction.
GB26537/55A 1954-12-22 1955-09-16 Improvements relating to a fan provided with a diffuser Expired GB785501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU785501X 1954-12-22

Publications (1)

Publication Number Publication Date
GB785501A true GB785501A (en) 1957-10-30

Family

ID=10980302

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26537/55A Expired GB785501A (en) 1954-12-22 1955-09-16 Improvements relating to a fan provided with a diffuser

Country Status (1)

Country Link
GB (1) GB785501A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230702A (en) * 1959-10-16 1966-01-25 Bertin & Cie Jet diffuser usable as a propeller shroud
US3298599A (en) * 1964-06-22 1967-01-17 Cons Vacuum Corp Pump nozzle
EP0141530A1 (en) * 1983-10-24 1985-05-15 Minnesota Mining And Manufacturing Company Multiple fluid pathway energy converter
FR2578589A1 (en) * 1985-03-05 1986-09-12 Ilka Luft & Kaeltetechnik Axial fan with inlet nozzle and stabilizer device
FR2726324A1 (en) * 1994-10-26 1996-05-03 Behr Gmbh & Co HELICOID FAN FOR THE RADIATOR OF AN INTERNAL COMBUSTION ENGINE
CN106321520A (en) * 2016-10-20 2017-01-11 珠海格力电器股份有限公司 Guide ring structure, axial flow fan and air conditioner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230702A (en) * 1959-10-16 1966-01-25 Bertin & Cie Jet diffuser usable as a propeller shroud
US3298599A (en) * 1964-06-22 1967-01-17 Cons Vacuum Corp Pump nozzle
EP0141530A1 (en) * 1983-10-24 1985-05-15 Minnesota Mining And Manufacturing Company Multiple fluid pathway energy converter
US4583911A (en) * 1983-10-24 1986-04-22 Minnesota Mining And Manufacturing Company Multiple fluid pathway energy converter
FR2578589A1 (en) * 1985-03-05 1986-09-12 Ilka Luft & Kaeltetechnik Axial fan with inlet nozzle and stabilizer device
FR2726324A1 (en) * 1994-10-26 1996-05-03 Behr Gmbh & Co HELICOID FAN FOR THE RADIATOR OF AN INTERNAL COMBUSTION ENGINE
US5701854A (en) * 1994-10-26 1997-12-30 Behr Gmbh & Co. Axial fan for an internal combustion engine
CN106321520A (en) * 2016-10-20 2017-01-11 珠海格力电器股份有限公司 Guide ring structure, axial flow fan and air conditioner
CN106321520B (en) * 2016-10-20 2018-11-23 珠海格力电器股份有限公司 Guide ring structure, axial flow fan and air conditioner

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