Ep Systems Sa

Microflow Engineering Sa

Genspec Sa

Philippe Luginbuhl

Joseph Hess

Raphael Weber

Jean-Marc Flick

Amir Feriani

Reiker Canfield

Hu Bo

Bo Hu

Jacques Achille Blanie

Damian Twerenbold

Raphaël Weber

Pierre Fran&ccedil;ois Indermuhle

Jacques Blanié

The invention concerns a liquid droplet spray device for atomising a liquid substance, Its housing consists of a at least a first substrate (), a space () within the housing for containing the supplied liquid substance, an outlet means arranged in the first substrate () and comprising at least one outlet nozzle () and at least one output channel (), said output channel () having straight side-walls, and a vibrating element () for vibrating the liquid so as to eject it. According to the present invention, each output channel () has a stepped shape having a lower portion () and an upper portion (), the lower portion being arranged adjacent the space () and being of larger diameter than the upper portion (). The outlet nozzle () of each output channel is straight and does not show notching effects. The invention also concerns a method of manufacturing such device using a differential etching technique to obtain the stepped shape output channel without notching effects on the outlet nozzle.

Method of manufacturing a liquid droplet spray device and such spray device

The present invention concerns a liquid droplet spray system for atomizing a liquid substance, comprising: a support having a central aperture (), a liquid droplet spray device in which a space is provided, the space being arranged to receive the liquid substance, and including a nozzle body () covering the space such that the liquid substance may exit the space of the device by traversing the nozzle body () and the system by traversing the central aperture () of the support, a reservoir () for containing the liquid substance.

Liquid droplet plug and spray system

The invention concerns a Liquid droplet plug & spray system for atomising a liquid substance and comprising a liquid droplet spray device including a housing in which a space is provided for receiving a liquid substance, a reservoir for containing said liquid substance, a fluidic interface for connecting said reservoir to said space in said housing thereby conveying liquid substance contained in said reservoir to said space by way of capillary action, a valve arranged between said reservoir and said fluidic channel for controlling access of said liquid substance from said reservoir to said fluid channel, an electromechanical actuation means for actuating the liquid substance in said space such that the liquid substance undergoes a vibration and is expelled as a liquid droplet spray, and electronic control means for controlling said electromechanical actuation means, wherein said liquid droplet spray system consists of two parts, a first, disposable part in which said reservoir and said valve are arranged, and a second, non-disposable part in which said liquid droplet spray device, said electromechanical actuation means, said electronic control means and said liquid channel are arranged such that said reservoir does not directly contact said liquid channel, said valve ensuring that said first, disposable part is liquid tight when not in use.

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 relates to a micromechanically produced nozzle for producing reproducibly small drops which consist of a liquid container delimited by a silicon structure and a pyrex structure. The silicon structure is a silicon wafer consisting of a silicon oxide layer (SiO ) and a silicon nitride layer (SI N ). The wafer has a nozzle of silicon oxide (SiO ), which forms a nozzle opening of a liquid container. The liquid is fed into the liquid container through a channel formed in the pyrex structure. A disk made of a piezoelectric material exerts a pressure on the liquid in the container, which passes through the nozzle in the form of a drop.

Micromechanically produced nozzle for producing reproducible droplets

Growing community of inventors

Nods, Switzerland

Philippe Luginbuhl