FR2413571A1 - Centrifugal pump or compressor - has nozzles to direct fluid stream tangentially to volute outer casing to prevent eddy formation - Google Patents

Centrifugal pump or compressor - has nozzles to direct fluid stream tangentially to volute outer casing to prevent eddy formation

Info

Publication number
FR2413571A1
FR2413571A1 FR7739953A FR7739953A FR2413571A1 FR 2413571 A1 FR2413571 A1 FR 2413571A1 FR 7739953 A FR7739953 A FR 7739953A FR 7739953 A FR7739953 A FR 7739953A FR 2413571 A1 FR2413571 A1 FR 2413571A1
Authority
FR
France
Prior art keywords
nozzles
compressor
outer casing
fluid stream
centrifugal pump
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.)
Granted
Application number
FR7739953A
Other languages
French (fr)
Other versions
FR2413571B1 (en
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.)
LAB SAS
Original Assignee
LAB SAS
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 LAB SAS filed Critical LAB SAS
Priority to FR7739953A priority Critical patent/FR2413571A1/en
Publication of FR2413571A1 publication Critical patent/FR2413571A1/en
Application granted granted Critical
Publication of FR2413571B1 publication Critical patent/FR2413571B1/fr
Granted 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
    • 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

Abstract

Eddies in centrifugal pumps and compressors can be eliminated by fitting nozzles (10, 11) to the volute casing (1). These nozzles direct a stream of air or fluid tangentially to the volute outer surface at a velocity which corresponds to the velocity which the air or fluid should achieve with true irrotational flow - i.e. without any eddies being formed. The nozzles extend over the full width of the volute casing.
FR7739953A 1977-12-30 1977-12-30 Centrifugal pump or compressor - has nozzles to direct fluid stream tangentially to volute outer casing to prevent eddy formation Granted FR2413571A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7739953A FR2413571A1 (en) 1977-12-30 1977-12-30 Centrifugal pump or compressor - has nozzles to direct fluid stream tangentially to volute outer casing to prevent eddy formation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7739953A FR2413571A1 (en) 1977-12-30 1977-12-30 Centrifugal pump or compressor - has nozzles to direct fluid stream tangentially to volute outer casing to prevent eddy formation

Publications (2)

Publication Number Publication Date
FR2413571A1 true FR2413571A1 (en) 1979-07-27
FR2413571B1 FR2413571B1 (en) 1980-10-24

Family

ID=9199625

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739953A Granted FR2413571A1 (en) 1977-12-30 1977-12-30 Centrifugal pump or compressor - has nozzles to direct fluid stream tangentially to volute outer casing to prevent eddy formation

Country Status (1)

Country Link
FR (1) FR2413571A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475868A (en) * 1981-12-08 1984-10-09 Emile Egger & Cie Sa Free-flow-pump
DE3929758A1 (en) * 1989-09-07 1991-03-21 Klein Schanzlin & Becker Ag CENTRIFUGAL PUMP HOUSING IN SHEET DESIGN

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475868A (en) * 1981-12-08 1984-10-09 Emile Egger & Cie Sa Free-flow-pump
DE3929758A1 (en) * 1989-09-07 1991-03-21 Klein Schanzlin & Becker Ag CENTRIFUGAL PUMP HOUSING IN SHEET DESIGN

Also Published As

Publication number Publication date
FR2413571B1 (en) 1980-10-24

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Legal Events

Date Code Title Description
ST Notification of lapse