JPS5660899A - Diffuser of centrifugal-type fluid machine - Google Patents

Diffuser of centrifugal-type fluid machine

Info

Publication number
JPS5660899A
JPS5660899A JP13640179A JP13640179A JPS5660899A JP S5660899 A JPS5660899 A JP S5660899A JP 13640179 A JP13640179 A JP 13640179A JP 13640179 A JP13640179 A JP 13640179A JP S5660899 A JPS5660899 A JP S5660899A
Authority
JP
Japan
Prior art keywords
diffuser
flow
width
height
inlet part
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
JP13640179A
Other languages
Japanese (ja)
Other versions
JPS6027839B2 (en
Inventor
Yoichi Yoshinaga
Kuninobu Morita
Shinjiro Ueda
Hideo Nishida
Yoshihiro Takada
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 JP13640179A priority Critical patent/JPS6027839B2/en
Priority to CH5774/80A priority patent/CH650563A5/en
Priority to DE19803028775 priority patent/DE3028775A1/en
Priority to IT68231/80A priority patent/IT1130815B/en
Publication of JPS5660899A publication Critical patent/JPS5660899A/en
Publication of JPS6027839B2 publication Critical patent/JPS6027839B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To improve the performance of a diffuser by forming the conical taper part at the inlet part of a diffuser, narrowing the width of a flow passage and installing a plurality of guide vanes at the tapered part and forming uniform the distribution of the flow at the inlet part of the diffuser.
CONSTITUTION: At the inlet part of a diffuser plate 8, the conical taper part 11 is formed, narrowing the width of a flow passage narrower than the exit width of a impeller and a plurality of short guide vanes 12 nearly parallel to the direction of main flow in the diffuser are arranged in the tapered part. The height of the guide vane 12 is the same to the height of the wall surface of the diffuser in the rear half part or within the range not exceeding the height described before. Through the action of this taper part 11, the flow at the exit of the impeller is accelerated, and the boundary layer becomes thinner, and exfoliation is prevented, and the flow in the vicinity of the wall surface is directed in the radial direction, and the flow at the inlet part of the diffuser is made uniform.
COPYRIGHT: (C)1981,JPO&Japio
JP13640179A 1979-08-01 1979-10-24 centrifugal compressor diffuser Expired JPS6027839B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13640179A JPS6027839B2 (en) 1979-10-24 1979-10-24 centrifugal compressor diffuser
CH5774/80A CH650563A5 (en) 1979-08-01 1980-07-29 Diffuser in a centrifugal driven machine
DE19803028775 DE3028775A1 (en) 1979-08-01 1980-07-29 DIFFUSER FOR CENTRIFUGAL WORKING MACHINE
IT68231/80A IT1130815B (en) 1979-08-01 1980-07-31 DIFFUSER FOR CENTRIFUGAL MACHINES SUCH AS COMPRESSORS AND PUMPS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13640179A JPS6027839B2 (en) 1979-10-24 1979-10-24 centrifugal compressor diffuser

Publications (2)

Publication Number Publication Date
JPS5660899A true JPS5660899A (en) 1981-05-26
JPS6027839B2 JPS6027839B2 (en) 1985-07-01

Family

ID=15174297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13640179A Expired JPS6027839B2 (en) 1979-08-01 1979-10-24 centrifugal compressor diffuser

Country Status (1)

Country Link
JP (1) JPS6027839B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201912A2 (en) * 1985-05-15 1986-11-20 Dresser Industries Inc. An improved diffuser for centrifugal compressors and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201912A2 (en) * 1985-05-15 1986-11-20 Dresser Industries Inc. An improved diffuser for centrifugal compressors and the like

Also Published As

Publication number Publication date
JPS6027839B2 (en) 1985-07-01

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