| 摘要 |
<p>Aerosol dispensers and atomiser Spray is a mixture of at least 2 fluids e.g. two selective insecticides or fungicides etc. At least 2 secondary venturies in a can sucks fluid using gaseous propellant. Each has a convergent chamber with a narrow orifice, and a wider orifice communicating directly to a distribution chamber in the box; a divergent chamber with a narrow and a wider orifice; and a passage which connects the wider convergent-chamber orifice to the narrower divergent-chamber orifice. The product feed tuve opens into this passage. A mixing chamber in the can wall is open to the outside, and the divergent chambers of all the secondary nozzles open into it. At least one propellant channel in the can has an opening in the wall remote from the chamber opening. The other end of this channel opens into the distribution chamber, so that propellant can flow freely into the convergent chambers. Ducts corresponding have an orifice in number to the secondary nozzles in the can wall and their other ends with one of the product feed channels which enter the passages of the secondary nozzles.</p> |
