JPS5549598A - Structure for fixing impeller of centrifugal fan or the like - Google Patents

Structure for fixing impeller of centrifugal fan or the like

Info

Publication number
JPS5549598A
JPS5549598A JP12241178A JP12241178A JPS5549598A JP S5549598 A JPS5549598 A JP S5549598A JP 12241178 A JP12241178 A JP 12241178A JP 12241178 A JP12241178 A JP 12241178A JP S5549598 A JPS5549598 A JP S5549598A
Authority
JP
Japan
Prior art keywords
impeller
bolt
centrifugal fan
expansion
straight portions
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.)
Pending
Application number
JP12241178A
Other languages
Japanese (ja)
Inventor
Michio Yamaguchi
Masanori Koga
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP12241178A priority Critical patent/JPS5549598A/en
Publication of JPS5549598A publication Critical patent/JPS5549598A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To protect centrifugal fan or the like against vibration, by fixing an impeller to the rotor by use of speical bolts at more than three points spaced circumferentially of the impeller, in the manner that expansion of the impeller is allowed only in one direction and hysteresis is given to the expansion of impeller.
CONSTITUTION: Four bolt holes 4 are formed in impeller 1 at equal pitches aling the circular array around the center of rotation of impeller 1, and these bolt holes 4 are in a shape elongated radially of the impeller 1 and having straight portions 4a extending radially of impeller 1. A bolt 3 is extended through the elongated hole 4 and bolt hole 6 of rotor 2 in the manner that its straight portions 4a are held in contact with respective flat portions 3a of bolt 3, and then a nut 7 is threaded onto the bolt 3. Because of such an arrangement that flat portions 3a of special bolts 3 are held in contact with straight portions 4a of elongated holes 4, it is enabled to allow expansion of impeller 1 only in one direction, to accomplish accurate centering of impeller 1 and to protect the centrifugal fan or the like against vibration.
COPYRIGHT: (C)1980,JPO&Japio
JP12241178A 1978-10-04 1978-10-04 Structure for fixing impeller of centrifugal fan or the like Pending JPS5549598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12241178A JPS5549598A (en) 1978-10-04 1978-10-04 Structure for fixing impeller of centrifugal fan or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12241178A JPS5549598A (en) 1978-10-04 1978-10-04 Structure for fixing impeller of centrifugal fan or the like

Publications (1)

Publication Number Publication Date
JPS5549598A true JPS5549598A (en) 1980-04-10

Family

ID=14835134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12241178A Pending JPS5549598A (en) 1978-10-04 1978-10-04 Structure for fixing impeller of centrifugal fan or the like

Country Status (1)

Country Link
JP (1) JPS5549598A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04103292U (en) * 1991-01-28 1992-09-07 三菱重工業株式会社 centrifugal fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04103292U (en) * 1991-01-28 1992-09-07 三菱重工業株式会社 centrifugal fan

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