Microflow Engineering Sa

Ep Systems Sa

Bo Hu

Joseph Hess

Jean-Marc Flick

Philippe Luginbuhl

Raphael Weber

Raphaël Weber

Philippe Luginb&uuml;hl

The invention concerns a nozzle body for a liquid droplet spray device for atomising a high viscous liquid substance such as perfume. A first and second substrate enclose a space for containing the liquid substance. Outlet means are arranged in the second substrate and have at least one outlet nozzle and at least one output channel, said output channel having straight side walls. Each output channel has a stepped shape having a wider portion and a thinner portion, the wider portion being arranged adjacent the space. The thinner portion contains a protrusion section protruding beyond the top surface of the second substrate such that the exterior side wall of the protrusion section is at a substantially straight angle with respect to the top surface of the second substrate.

Low-cost liquid droplet spray device and nozzle body

The invention concerns a liquid droplet spray device for atomising a liquid substance, comprising a housing comprising a first substrate, a second substrate superposed on the first substrate and a space enclosed by said first and second substrates for containing the liquid substance. An outlet means is arranged in at least one of said first or second substrates and comprises at least one outlet nozzle ( ) and at least one output channel ( ) connecting the space ( ) to each outlet nozzle ( ). A vibrating element ( ) is disposed to vibrate liquid in said space ( ) so as to eject said liquid substance as a spray through said outlet nozzles ( ). According to the present invention, each output channel ( ) has a first portion ( ), a second portion ( ) and a third portion, said first portion being arranged adjacent said space ( ) and having straight sidewalls, said third portion also having straight sidewalls, the width of said first portion being larger than the width of said third portion, said second portion connecting said first portion to said third portion such that the width of the output channel changes progressively from the width of said first portion to the width of said third portion.

Liquid droplet spray device

The invention concerns a liquid droplet spray device for atomising a liquid substance, comprising a housing comprising a first substrate, a second substrate superposed on the first substrate and a space enclosed by said first and second substrates for containing the liquid substance.

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Neuchatel, Switzerland

Bo Hu