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1. One that impels, as a rotating device used to force a fluid in a desired direction under pressure.
2. A rotor or rotor blade.


1. (General Engineering) the vaned rotating disc of a centrifugal pump, compressor, etc
2. (General Engineering) a compressor or centrifugal pump having such an impeller


(ɪmˈpɛl ər)

1. one that impels.
2. a rotor for transmitting motion, as in a centrifugal pump, turbine, or fluid coupling.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.impeller - the blade of a rotor (as in the compressor of a jet engine)impeller - the blade of a rotor (as in the compressor of a jet engine)
vane, blade - flat surface that rotates and pushes against air or water
rotor - rotating mechanism consisting of an assembly of rotating airfoils; "there are horizontal rotors on a helicopter or compressor rotors in a jet engine"
References in periodicals archive ?
It was found out that some of the parts have aged and that one of the impellers was not working out of the 32 impellers.
The impellers to the fans in the amount of 16 units - Lot No.
Trimmed Impellers--BJM Pumps offers two impeller trims for each of the SKG models to expand hydraulic coverage.
Cast impellers are frequently found in leaf blowers that make rustling leaves a bit more palatable.
A multi-stage pump enjoys impellers of the same size which are designed for the same capacity.
Wear adjustment will also be incorporated in the redesign of these 37-kW siblings of the Maxi-Lite, and Maxi H, Maxi N and Maxi L units will be available with semi-open impellers in either hard iron or stainless steel.
Although wastewater treatment has improved, the amount of oxygen in wastewater, together with chemical treatment of wastewater generally, leads to a higher degree of corrosion of volutes, pump impellers and propellers.
Once the accuracy of the model was confirmed it was then possible to introduce design improvements to the impellers, the labyrinth seals, the inter-coolers, the bearings and the shaft itself.
In addition, we conducted steady-state thermal testing to measure the convective thermal resistance (average heat transfer coefficient) of the rotating impellers.
com)-- Globe Marine is pleased to introduce another new marine impeller model added to its line of world-class Globe Run-Dry[R] Impellers -- the only flexible impeller in the world that is able to run-dry for up to 15 minutes.
Turbines are multi-blade impellers with small blades that used at high speeds.
The pumps feature open impellers with two times the wear area of a closed design, which optimizes the performance of the pump's open impeller and allows renewable performance.