Definition of impeller in English:

impeller

(also impellor)

noun

  • 1The rotating part of a centrifugal pump, compressor, or other machine designed to move a fluid by rotation.

    • ‘Clear any broken pieces of the old impeller that could clog water flow.’
    • ‘Rotation of the impeller draws liquid through the inlet cap opening and pushes the liquid through the pump flow path.’
    • ‘High-speed impellers for pumping corrosive gases in certain industrial processes are aluminum weldments.’
    • ‘Offering four different models, these handheld digital instruments quickly and easily read wind speed via a sturdy impeller.’
    • ‘The engine output shaft drives the torque converter's impeller, which uses fins to pump fluid - in this case engine oil - to drive vanes on the torque converter's turbine.’
    • ‘Closed impellers are more efficient with water and very liquid manure, but cannot handle large solids.’
    • ‘This is one durable resin - one well suited for functional prototypes like impellers, pump housings, headlight reflectors, and wind tunnel test models.’
    • ‘This type of humidifier has a rapidly rotating fan called an impeller, which turns water droplets into a fine mist.’
    • ‘Consider what you need to displace during jobs like repairing the fresh water pump or changing an impellor.’
    • ‘As the debris passes through the impeller that would normally be providing air flow to push leaves, it is shredded to many times its original size before entering the vacuum bag.’
    • ‘As the bubbles pop, shock waves are created within the pump that not only make noise but also burst with enough force to damage the impeller and other pump parts.’
    • ‘The flow of air exits the impeller and enters a vaneless diffuser, where it is straightened out and sent into the scroll.’
    • ‘The impeller on the water pump was just about gone and the bushing holding it to the shaft was cracked.’
    • ‘The stator has one more blade than the impeller, and is designed to reroute the airflow from the fan in a more coherent way, as well as minimize fan noise.’
    • ‘It whips it up to speed dramatically, but the impeller doesn't compress the air or generate boost.’
    • ‘In this area, it is investigating the use of improved cooling fans, impellers, and other devices that can help keep processors cool.’
    • ‘Centrifugal pumps are not positive-displacement pumps because the impeller can slip in the liquid.’
    • ‘Wear opens up the seal area allowing some of the higher pressure water exiting the impeller to flow back into the lower pressure area below the impeller.’
    • ‘It can also analyze flows created by assemblies with non-symmetrical enclosures, such as impellers and centrifugal pumps.’
    • ‘The valves have stainless steel disks and the bells and impellers are made of cast iron.’
    1. 1.1 A device turned by the flow of water past a ship's hull, used to measure speed or distance travelled.
      • ‘The flow of water past the transducer it contained would drive a small impeller to give an electrical signal proportional to the speed of the boat.’
      • ‘The distance traveled can be measured by counting the revolutions of an impeller towed behind the vessel or mounted in its hull.’

Pronunciation:

impeller

/ɪmˈpɛlə/