impeller

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impeller

[im′pel·ər]
(mechanical engineering)
The rotating member of a turbine, blower, fan, axial or centrifugal pump, or mixing apparatus. Also known as rotor.

impeller

impeller
The rotating member in a pump consisting of a disk with vanes attached to it; moves liquid by accelerating the liquid radially outward.

impeller

impeller
impeller
impeller
i. A part of a gas turbine engine used in the compressor section. It consists of a forged disc with radially opposed vanes on one or both sides, forming a convergent passage in conjunction with the compressor casing.
ii. A device that imparts motion to a fluid; specifically, in a centrifugal compressor, a rotary disc that is faced on one or both sides with radial vanes and accelerates the incoming fluid outward into a diffuser. Also called an impeller wheel.
iii. A vaned disc, which picks up and accelerates the air outwardly to increase the pressure in a supercharger of a reciprocating engine.
References in periodicals archive ?
The hardened impeller and suction cover materials provide maximum wear resistance for long service life.
They further calculated the values of velocity and pressure across different zones around the impellers of the pumps.
Tony Price explained his company has conducted extensive accelerated wear tests on impellers at its laboratory, and observed that grey iron and stainless steel wore at approximately the same rate; 2mm in 50-63 hours of accelerated testing.
Of this only 2-3 per cent of improvement would be as a result of changing the inter-coolers, the majority came from redesigning the impellers.
Since the impeller blades reside in an rotating frame, fluid particles in the boundary layer adjacent to their surfaces experience an outward centrifugal force, an effect which tends to result in thinner boundary layers compared to stationary, pressure-driven flow (see, for example, experimental results of Cobb and Saunders (1956) or theoretical analysis of Schlichting (1979)).
Unlike impellers made from traditional neoprene materials, Globe impellers are guaranteed to run-dry for up to 15 minutes," he added.
m) M Distance between impellers and bearing (m) [L.
Investment-cast impellers that are ultra-smooth to guarantee hydraulic and mechanical balance, and maximized seal and bearing life
Various types of impellers are used in mechanically agitated vessels in order to fulfill different mixing requirements in industry.
Omanpumps, the leading pumps and pumping systems company, launched Grundfos Sewage pump with 'S' Tube impeller at a Seminar held on 12th June at Grand Hyatt.
A various literature is available on detailed velocity fields in mixing tanks agitated by various impellers.
The pumps are available with SuperVortex impellers for applications with required low operating hours, dry matter content above 5 per cent, and a spherical free passage up to 100 mm, or with the S-tube impeller for applications with required high operating hours, dry matter content up to 3 per cent, and a spherical free passage up to 160 mm.