NZ332493A - An impeller and fan incorporating same, with impeller having inwardly curved airfoil type blades located spaced about axis - Google Patents

An impeller and fan incorporating same, with impeller having inwardly curved airfoil type blades located spaced about axis

Info

Publication number
NZ332493A
NZ332493A NZ332493A NZ33249397A NZ332493A NZ 332493 A NZ332493 A NZ 332493A NZ 332493 A NZ332493 A NZ 332493A NZ 33249397 A NZ33249397 A NZ 33249397A NZ 332493 A NZ332493 A NZ 332493A
Authority
NZ
New Zealand
Prior art keywords
impeller
axis
blade
fluid flow
rotation
Prior art date
Application number
NZ332493A
Inventor
Peter Eric Rollo
Original Assignee
Rollo Entpr 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 Rollo Entpr Ltd filed Critical Rollo Entpr Ltd
Priority to NZ332493A priority Critical patent/NZ332493A/en
Priority claimed from PCT/NZ1997/000055 external-priority patent/WO1997042416A1/en
Publication of NZ332493A publication Critical patent/NZ332493A/en

Links

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

An impeller (10) is disclosed having an axis about which the impeller is rotatable in a working direction of rotation A. A plurality of aerofoil blades (14) are spaced from and arranged about the axis. The inwardly axis-facing surface (16) of each blade (14) defines a longer fluid flow path across the blade than the opposite outwardly-facing surface (18). Each blade has an angle of attack from 0° up to a positive angle of attack less than that at which the blade will induce turbulent fluid flow when the impeller is rotated in a fluid at a working speed in the working direction of rotation A. During such rotation the impeller induces an inlet fluid flow generally axially toward the impeller and an outward fluid flow away from the impeller in directions generally inclined about 30° or more or less relative to axis.
NZ332493A 1996-05-07 1997-05-07 An impeller and fan incorporating same, with impeller having inwardly curved airfoil type blades located spaced about axis NZ332493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ332493A NZ332493A (en) 1996-05-07 1997-05-07 An impeller and fan incorporating same, with impeller having inwardly curved airfoil type blades located spaced about axis

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NZ28653596 1996-05-07
PCT/NZ1997/000055 WO1997042416A1 (en) 1996-05-07 1997-05-07 An impeller and fan incorporating same
NZ332493A NZ332493A (en) 1996-05-07 1997-05-07 An impeller and fan incorporating same, with impeller having inwardly curved airfoil type blades located spaced about axis

Publications (1)

Publication Number Publication Date
NZ332493A true NZ332493A (en) 2000-09-29

Family

ID=26651610

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ332493A NZ332493A (en) 1996-05-07 1997-05-07 An impeller and fan incorporating same, with impeller having inwardly curved airfoil type blades located spaced about axis

Country Status (1)

Country Link
NZ (1) NZ332493A (en)

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