Tyco Fire + Security Gmbh

Tyco Fire Products LP

Pursuit Dynamics Plc

Pursuit Marine Drive Limited

Alexander Guy Wallis

Marcus Brian Mayhall Fenton

John Gervase Mark Heathcote

Apparatus for generating a mist comprising a conduit having a mixing chamber and an exit; a transport nozzle in fluid communication with the said conduit, the transport nozzle being adapted to introduce a transport fluid into the mixing chamber; a working nozzle positioned adjacent the transport nozzle intermediate the transport nozzle and the exit, the working nozzle being adapted to introduce a working fluid into the mixing chamber; the transport and working nozzles having an angular orientation and internal geometry such that in use interaction of the transport fluid and working fluid in the mixing chamber causes the working fluid to atomize and form a dispersed vapor/droplet flow regime, which is discharged as a mist from the exit, the mist comprising working fluid droplets having a substantially uniform size.

Method and apparatus for generating a mist

Apparati for generating a mist are disclosed. One apparatus is disclosed, which has an elongate hollow body () and an elongate member () located within the body (). A transport fluid passage () and a nozzle () are defined between the body () and the elongate member (). The transport fluid passage () has a throat portion of reduced cross-sectional area and is in fluid communication with the nozzle (). The elongate member () includes a working fluid passage () and one or more communicating openings, such as for example, bores, annuli, and combinations thereof, () extending radially outward from the working fluid passage (). The openings () permit a working fluid (e.g. water) to be passed into the transport fluid passage (), whereupon the working fluid is subjected to shear forces by a high velocity transport fluid (e.g. steam). The shearing of the working fluid results in the generation of a mist formed from droplets of substantially uniform size. Methods of generating a mist using such apparati are also disclosed. Also provided are mists for fire suppression produced using an apparatus disclosed herein, as well as fire suppression systems that include any of the apparati disclosed herein. Further provided are devices, methods, and mists for various other applications including turbine cooling and decontamination.

Mist generating apparatus and method

A fluid mover includes a hollow body with a straight-through passage of substantially constant cross-section with an inlet end an outlet end for the entry and discharge respectively of a working fluid. A nozzle substantially circumscribes and opens into the passage intermediate the inlet and outlet ends. An inlet communicates with the nozzle for the introduction of a transport fluid, and a mixing chamber is formed within the passage downstream of the nozzle. The nozzle internal geometry and the bore profile upstream of the nozzle exit optimize the energy transfer between the transport fluid and working fluid. Working fluids are atomized to form a dispersed vapor/droplet flow with locally supersonic conditions within a pseudo-vena contracta, resulting in the creation of a supersonic condensation shock wave within the downstream mixing chamber by the condensation of the transport fluid. Methods of moving and processing fluids using the fluid mover are also disclosed.

Jet pump

The present invention relates to apparatus and method for generating a mist comprising a conduit having a mixing chamber and an exit; a working fluid inlet in fluid communication with said conduit; a transport nozzle in fluid communication with the said conduit, the transport nozzle adapted to introduce a transport fluid into the mixing chamber; the transport nozzle having an angular orientation and internal geometry such that in use the transport fluid interacts with the working fluid introduced into the mixing chamber through the working fluid inlet to atomize and form a dispersed vapor/droplet flow regime, which is discharged as a mist comprising working fluid droplets, a substantial portion of the droplets having a size less than 20 &#x3bc;m.

A fluid mover () includes a hollow body () provided with a straight-through passage () of substantially constant cross section with an inlet end () an outlet end () for the entry and discharge respectively of a working fluid. A nozzle () substantially circumscribes and opens into the passage () intermediate the inlet () and outlet () ends. An inlet () communicates with the nozzle () for the introduction of a transport fluid and a mixing chamber (A) is formed within the passage () downstream of the nozzle (). The nozzle internal geometry and the bore profile immediately upstream of the nozzle exit are disposed and configured to optimise the energy transfer between the transport fluid and working fluid. In use, through the introduction of transport fluid, the working fluid or fluids are atomized to form a dispersed vapor/droplet flow regime with locally supersonic flow conditions within a pseudo-vena contracta, resulting in the creation of a supersonic condensation shock wave () within the downstream mixing chamber (A) by the condensation of the transport fluid. Methods of moving and processing fluids using the fluid mover are also disclosed.

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Adelaide, Australia

Alexander Guy Wallis