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PUMP WITH VARIABLE FLOW DIVERTER THAT FORMS VOLUTE

  • US 20190331131A1
  • Filed: 01/23/2017
  • Published: 10/31/2019
  • Est. Priority Date: 01/22/2016
  • Status: Active Grant
First Claim
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1. A pump, comprising:

  • a pump housing having a pump inlet and a pump outlet;

    an impeller rotatably supported in the pump housing for rotation about an impeller axis, and having an impeller inlet configured for drawing in liquid from the pump inlet during rotation of the impeller, and an impeller outlet configured for discharging liquid in a generally radial direction,wherein the pump housing has an impeller outlet receiving chamber positioned radially outside the impeller for transport of liquid from the impeller outlet to the pump outlet,and wherein the pump housing further includes a diverter, wherein the diverter has an upstream end that is pivotally connected at a first location in the impeller outlet receiving chamber and a downstream end at a second location in the impeller outlet receiving chamber,wherein the diverter is pivotable between a first position in which the diverter provides a first restriction to flow out from the pump housing, and in which the diverter forms at least a portion of a volute around at least a portion of the impeller, wherein the volute has a cross-sectional area that increases progressively from the upstream end of the diverter to the downstream end of the diverter, and a second position in which the diverter provides a second restriction to flow out from the pump outlet that is greater than the first restriction.

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