Device and method for generating a drop of a liquid

US8877145B2 · kind B2 · utility

Assignee

• Albert-Ludwigs-Universitaet Freiburg · DE

Inventors

• Tobias Metz · Buch am Erlbach, DE
• Peter Koltay · March, DE

Key dates

• Filing date: May 12, 2011
• Grant date: Nov 4, 2014
• Expiry date: Jun 14, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2/211
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A device for generating a drop of a primary liquid is described, including: a reservoir fillable with the primary liquid, a pressure generation device for generating a hydraulic pressure on the primary liquid, at least one inlet channel for introducing a secondary fluid, and a channel having a flow cross-section transverse to a main flow direction, wherein the flow cross-section includes a main region and at least one sub-region extending from the main region, designed such that the primary liquid can be held in the main region by capillary forces, and the secondary fluid can be held in the sub-region by capillary forces, wherein the reservoir is fluidically connected to a first end of the channel via an output opening, and the at least one inlet channel is also fluidically connected to the channel, and wherein the pressure generation device is implemented to apply a hydraulic pressure to the primary liquid, whereby the same is moved along the channel and output at a second end of the channel as free-flying drop.