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Dual cyclonic vacuum cleaner with disposable liner

  • US 5,090,976 A
  • Filed: 09/21/1990
  • Issued: 02/25/1992
  • Est. Priority Date: 09/21/1990
  • Status: Expired due to Term
First Claim
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1. In a cleaning apparatus including a container comprising a bottom and a sidewall extending to and meeting the bottom, the sidewall having an interior surface, a dirty air inlet at an upper portion of the container spaced from the bottom which is oriented for supplying dirt laden air into the container tangentially to the interior surface of the container which has a circular cross-section and an air outlet from the container at the upper portion of the container;

  • a circular cross-sectioned cyclone having a longitudinal axis and mounted inside the container, the cyclone comprising a cyclone air inlet at an upper end having a first diameter of the cyclone in air communication with the air outlet of the container, an interior dirt rotational surface of frusto-conical shape for receiving an airflow from the air inlet and for maintaining its velocity to a cone opening smaller in diameter than the diameter of the upper end of the cyclone, the air inlet being oriented for supplying air tangentially to the surface and a cyclone air outlet communicating with the interior of the cyclone adjacent the upper end of the cyclone;

    a dirt collecting receiver extending from the cone opening; and

    means for generating an airflow which passes through the dirty air inlet, the container, the cyclone air inlet, the cyclone, the receiver and the cyclone air outlet, the airflow rotating around the frusto-conical interior surface of the cyclone and depositing the dirt in the receiver the improvement which comprises;

    (a) the receiver having opposed ends, one of which is open, adjacent to the bottom of the container; and

    (b) the container having a closure member projecting from the bottom of the container for removably mating with and closing the open end of the receiver;

    (c) wherein in use a bag shaped liner means is mounted in the container on the inside surface of the container including the closure member and the open end of the receiver between the closure member and the receiver so that the liner means has the shape of the interior surface of the container and wherein the liner means provides for collecting the dirt separated from the airflow, passing through the cleaning apparatus, by the container and by the cyclone in the receiver.

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