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US 5,918,637 AGranted
Plates perforated with venturi-like orifices
OwnerWilliam H. Fleischmaninventor
Life of this patent
Estimating the term…
Abstract
Plates that are perforated with two or more venturi orifices that have "C.sub.d " discharge coefficient values that are greater than 1.0. The venturi orifices to be used can be made in an infinite number of tubes that have a converging entrance, a throat, and a diverging discharge. The plates are to be used to make improved devices to be used in fluid flow streams.
Claims30
A plate, comprising:
- a layer having a thickness extending between spaced-apart opposite major surfaces;
- said layer being perforated with a plurality of venturi orifices extending between said opposite major surfaces, said venturi orifices comprising:
- an inlet;
- a converging entrance extending from said inlet;
- a throat separated from said inlet by said entrance, said throat terminating said entrance;
- a diverging discharge separated from said converging entrance by said throat;
- and
- an outlet terminating said discharge;
- said venturi orifice having a discharge coefficient greater in value than 1.0, where said discharge coefficient equals a ratio of a rate of discharge from said venturi orifice to a rate of discharge from a perfect nozzle that has the same discharge area as said throat of said venturi orifice when entrance velocity is insignificant;
- said venturi orifice having no cavitation in normal service;
- and
- said throat of said venturi orifice being free of any passage other than said entrance and said discharge.
9 more elements
A plate, comprising:
- a plate;
- and
- a plurality of venturi orifices perforating said plate, said venturi orifices comprising a passage sequentially progressing from a converging entrance, a throat and a diverging discharge, said venturi orifices each providing a discharge coefficient greater in value than 1.0, where said discharge coefficient equals a ratio of a rate of discharge from said venturi orifice to a rate of discharge from a perfect nozzle having the same discharge area as said throat of said venturi orifice when entrance velocity is insignificant.
A plate, comprising:
- a layer having a thickness extending between spaced-apart opposite major surfaces;
- said layer being perforated with a plurality of venturi orifices extending between said opposite major surfaces, said venturi orifices comprising:
- an inlet;
- a throat;
- an outlet;
- a converging entrance interposed between said inlet and said throat;
- and
- a diverging discharge interposed between said throat and said outlet;
- said venturi orifice having a discharge coefficient greater in value than 1.0, where said discharge coefficient equals a ratio of a rate of discharge from said venturi orifice to a rate of discharge from a perfect nozzle that has the same discharge area as said throat of said venturi orifice when entrance velocity is insignificant.
6 more elements
Dependencies are inferred from the claim text.