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Vacuum cleaner noise reducing arrangement

  • US 4,970,753 A
  • Filed: 02/23/1990
  • Issued: 11/20/1990
  • Est. Priority Date: 02/23/1990
  • Status: Expired due to Fees
First Claim
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1. In a vacuum cleaner having:

  • a housing forming an enclosure for the components of the vacuum cleaner, an inlet opening formed in said housing for communicating between the ambient atmosphere and the interior of said housing, and an exhaust opening formed in said housing for communicating between the interior of said housing and the ambient atmosphere; and

    an electric motor blower assembly including a fan and a motor mounted in said housing, said fan being enclosed within a casing including an intake port and an exhaust port, said motor driving said fan to create suction at said intake port to set up a flow of air from said inlet opening to said exhaust opening;

    an arrangement for baffling the flow of air between said fan casing exhaust port and said housing exhaust opening so as to reduce the noise generated by said flow of air, comprising;

    a noise reduction compartment formed in said housing and communicating with said housing exhaust opening;

    means for providing air flow communication between said fan casing exhaust port and said noise reduction compartment; and

    an air flow baffle cartridge removably supported within said noise reduction compartment, said cartridge having a first opening for communicating with said air flow communication providing means, a second opening for communicating with said housing exhaust opening, and means intermediate said first and second cartridge openings for interfering with the free flow of air therebetween.

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