Device for creating and exploiting a pressure difference and a technical application thereof.

A device for creating a pressure differential in the flow of a fluid which may be a liquid or a gas, in which the latter is fed along the longitudinal axis of a double cone, consisting of two coaxial hollow cones linked by their smallest faces. At the narrowest point of the double cone a depression occurs in the fluid flow which is made accessible to the outside by means of a lateral connection piece. Compared with a conventional venturi the present double cone offers increased efficiency owing to its special shape, which is defined by specific geometric parameters. The high efficiency of the double cone, which can be further improved by a special embodiment, makes the process suitable for a number of technical applications.