JPS57119199A - Impeller for centrifugal fan - Google Patents

Impeller for centrifugal fan

Info

Publication number
JPS57119199A
JPS57119199A JP547481A JP547481A JPS57119199A JP S57119199 A JPS57119199 A JP S57119199A JP 547481 A JP547481 A JP 547481A JP 547481 A JP547481 A JP 547481A JP S57119199 A JPS57119199 A JP S57119199A
Authority
JP
Japan
Prior art keywords
blades
mold
impeller
inexpensive resin
heat strain
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
JP547481A
Other languages
Japanese (ja)
Inventor
Kunihiro Noto
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 JP547481A priority Critical patent/JPS57119199A/en
Publication of JPS57119199A publication Critical patent/JPS57119199A/en
Pending 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To contrive sharp reduction of manufacturing cost in such a way that an impeller is formed by means of a mold using inexpensive resin in which silicate for alleviating heat strain is mixed in its proper rate and, ring-shaped ribs of the impeller are formed by means of a mold integrally with blades. CONSTITUTION:At the same time as mold formation is done by using inexpensive resin which is made by mixing calcium silicate in approximately 20% of weight ratio for alleviating heat strain in polypropylene in which denatured polymer and copolymer are mixed almost in the same rate, which has larger heat strain than polycabonate does, in the contrivance to form a plurality of blades which stretches in the axial direction on the identical circumferential plane, ring-shaped ribs 2, 4 which surround the outer periphery of said blades at the intermediate position in the longitudinal direction of blades 1 are integrally formed with the blades 1 by means of a mold. Thus, the fan's cost can be sharply reduced by using more inexpensive resin than polycarbonate.
JP547481A 1981-01-17 1981-01-17 Impeller for centrifugal fan Pending JPS57119199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP547481A JPS57119199A (en) 1981-01-17 1981-01-17 Impeller for centrifugal fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP547481A JPS57119199A (en) 1981-01-17 1981-01-17 Impeller for centrifugal fan

Publications (1)

Publication Number Publication Date
JPS57119199A true JPS57119199A (en) 1982-07-24

Family

ID=11612237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP547481A Pending JPS57119199A (en) 1981-01-17 1981-01-17 Impeller for centrifugal fan

Country Status (1)

Country Link
JP (1) JPS57119199A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182698U (en) * 1983-05-25 1984-12-05 カルソニックカンセイ株式会社 Synthetic resin Sirotskov fan
JPH04339199A (en) * 1991-05-15 1992-11-26 Hitachi Ltd Multiple blade impeller
EP1591667A2 (en) * 2004-04-06 2005-11-02 ELECTROMEC S.p.A. Fan unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4265Y1 (en) * 1964-07-17 1967-01-05
JPS55131031A (en) * 1979-03-31 1980-10-11 Idemitsu Petrochem Co Ltd Polypropylene resin composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4265Y1 (en) * 1964-07-17 1967-01-05
JPS55131031A (en) * 1979-03-31 1980-10-11 Idemitsu Petrochem Co Ltd Polypropylene resin composition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182698U (en) * 1983-05-25 1984-12-05 カルソニックカンセイ株式会社 Synthetic resin Sirotskov fan
JPH04339199A (en) * 1991-05-15 1992-11-26 Hitachi Ltd Multiple blade impeller
EP1591667A2 (en) * 2004-04-06 2005-11-02 ELECTROMEC S.p.A. Fan unit
EP1591667A3 (en) * 2004-04-06 2009-05-13 ELECTROMEC S.p.A. Fan unit

Similar Documents

Publication Publication Date Title
JPS57119199A (en) Impeller for centrifugal fan
JPS51119090A (en) Curable resin compositions
GB1457691A (en) Rotor
JPS5783670A (en) Biaxial type water mill and wind mill
JPS55153894A (en) Impeller for mixed flow blower
FR2373731A1 (en) Plastic gear wheel moulded around radially ribbed metal hub - formed from sheet metal with radial ribs embedded in plastics wheel body
JPS5356294A (en) Thermosetting resin composition
JPS529054A (en) A method for cross-linking ethylene- propylene rubber
JPS5649749A (en) Polyester resin composition
JPS55114897A (en) Cross flow impeller
GB998329A (en) A mixer
JPS5384098A (en) Preparation of phenolic resin
JPS52134694A (en) Preparation of molding thermosetting resins
JPS6456901A (en) Resin impeller
JPS5571771A (en) Adhesive composition
JPS5757738A (en) Agricultural polyethylene film
JPS5759099A (en) Propeller fan
JPS57205419A (en) Thermosetting resin composition
JPS52142794A (en) Aromatic crosslinked copolymer and its preparation
JPS52136298A (en) Preparation of epoxy resins having cyanuric rings
JPS5511853A (en) Injection molded product with improved weld strength
JPS5554691A (en) Self-suction pump
JPS573845A (en) Composition for waterproof sheet
JPS5628240A (en) Heat-resistant resin composition
JPS5235301A (en) Centrifugal pump and impeller