MULTISTAGE CYCLONE AND SURFACE CLEANING APPARATUS HAVING SAME

  • US 20180353032A1
  • Filed: 08/21/2018
  • Published: 12/13/2018
  • Est. Priority Date: 12/27/2016
  • Status: Active Grant
First Claim
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1. A surface cleaning apparatus comprising:

  • (a) an air flow path extending from a dirty air inlet to a clean air outlet with a suction motor positioned in the air flow path;

    (b) a cyclone positioned in the air flow path, the cyclone having a cyclone chamber, a cyclone chamber sidewall, a plurality of tangential air inlets, a cyclone air outlet and a longitudinal cyclone axis about which the air rotates in the cyclone chamber, the cyclone chamber having a length in a direction of the longitudinal cyclone axis wherein air rotates in a direction of rotation in the cyclone chamber, each of the tangential air inlets comprises an inlet port provided in the cyclone chamber sidewall, each inlet port has an upstream edge and a downstream edge in the direction of rotation; and

    ,(c) an air flow passage extending parallel to the cyclone axis and upstream from the tangential air inlets, the air flow passage having a terminal end at which the plurality of tangential air inlets are located,wherein each of the tangential air inlets has a terminal end wall and a flow directing member is provided at the downstream edge of one of the air inlet ports, the flow directing member extends longitudinally from the terminal end wall and also extends into the air flow passage.

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