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Method and device for liberating a fragrant or disinfectant substance

  • US 20020090318A1
  • Filed: 02/08/2002
  • Published: 07/11/2002
  • Est. Priority Date: 08/09/1999
  • Status: Abandoned Application
First Claim
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1. A method for dispersing a substance, in particular a fragrant or disinfectant substance, in a volume of air, in which method a volume of air is made to flow inside a conduit (1) and a fragrant or disinfectant substance is liberated inside the conduit by positioning a cylinder (5) containing the substance to be dispersed and a compressed propellant gas outside the conduit (1), and by expanding the propellant gas so as to inject the substance inside the conduit, wherein injection of the substance is controlled as a function of an indicated value of the pressure (P11) of the propellant gas in the cylinder and of an indicated value of the flow rate (Q) of the air passing through the conduit.

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