JPS5660898A - Diffuser of centrifugal-type fluid machine - Google Patents

Diffuser of centrifugal-type fluid machine

Info

Publication number
JPS5660898A
JPS5660898A JP13640079A JP13640079A JPS5660898A JP S5660898 A JPS5660898 A JP S5660898A JP 13640079 A JP13640079 A JP 13640079A JP 13640079 A JP13640079 A JP 13640079A JP S5660898 A JPS5660898 A JP S5660898A
Authority
JP
Japan
Prior art keywords
diffuser
vortex
stream
vane wheel
generating grooves
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
JP13640079A
Other languages
Japanese (ja)
Other versions
JPS6027838B2 (en
Inventor
Yoichi Yoshinaga
Shinjiro Ueda
Hideo Nishida
Kuninobu Morita
Hiromi Kobayashi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13640079A priority Critical patent/JPS6027838B2/en
Publication of JPS5660898A publication Critical patent/JPS5660898A/en
Publication of JPS6027838B2 publication Critical patent/JPS6027838B2/en
Expired legal-status Critical Current

Links

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To improve the performance of a diffuser by forming a plurality of vortex generating grooves which generates vortex in the reverse direction to the direction of revolution of a vane wheel, along the inlet circumference of a vaneless diffuser, and forming uniform the stream at the diffuser inlet part.
CONSTITUTION: A plurality of vortex generating grooves 11 and 12 are formed along the surface of the flow ppassage on the inlet circumference of diffuser plates 8 and 9. Into said vortex generating grooves 11 and 12, the swirling flow which flows-out from the exit ends of the core plate 3 and the side plate 2 of a vane wheel is lead, and small vortex stream in the reverse direction to the direction of revolution of the vane wheel is formed. As a result of this, a plurality of small vortex are formed at the inlet part of the diffuser, and the stream in the vicinity of the surface of the diffuser flow passage is shifted from the direction (a) to the direction (b), and uniform distribution in the direction of the width of the flow passage can be obtained, and exfoliation of the boundary layer on the wall surface is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP13640079A 1979-10-24 1979-10-24 centrifugal compressor diffuser Expired JPS6027838B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13640079A JPS6027838B2 (en) 1979-10-24 1979-10-24 centrifugal compressor diffuser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13640079A JPS6027838B2 (en) 1979-10-24 1979-10-24 centrifugal compressor diffuser

Publications (2)

Publication Number Publication Date
JPS5660898A true JPS5660898A (en) 1981-05-26
JPS6027838B2 JPS6027838B2 (en) 1985-07-01

Family

ID=15174273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13640079A Expired JPS6027838B2 (en) 1979-10-24 1979-10-24 centrifugal compressor diffuser

Country Status (1)

Country Link
JP (1) JPS6027838B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053359A (en) * 2014-09-02 2016-04-14 マン・ディーゼル・アンド・ターボ・エスイー Radial compressor stage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053359A (en) * 2014-09-02 2016-04-14 マン・ディーゼル・アンド・ターボ・エスイー Radial compressor stage

Also Published As

Publication number Publication date
JPS6027838B2 (en) 1985-07-01

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