Agitating – Agitator – Stirrer
Patent
1980-03-25
1981-12-15
Coe, Philip R.
Agitating
Agitator
Stirrer
261 93, 366317, 416199, B01F 716
Patent
active
043056733
ABSTRACT:
The mixing impeller of the invention has a central, axial hub adapted for attachment to a rotatable driven shaft of a mixer motor. Mounted on the hub is a disc that extends radially from the hub. Circumferentially spaced around the disc are a number of impeller blades. Each blade has two different surfaces for mixing a liquid. One surface is flat and rectangular; the other surface is arrowhead-like, converging from the axial ends of the rectangular surface toward the middle of the rectangular surface of the next adjacent blade. When rotated at a given speed in a fluid in one direction, the impeller draws considerably less power than when rotated in the same fluid at the same speed in the opposite direction. Under certain operating conditions, the impeller has a higher mass transfer efficiency, in both directions of rotation when compared to other impellers. The blades of the impeller may be either open or closed, thereby further modifying the power characteristic of the impeller.
Coe Philip R.
FitzGerald Thomas R.
General Signal Corporation
Mednick Jeffrey S.
Wynn Harold S.
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