Steam distributor for steam showers
AssigneeABB AB
InventorsShizhong Duan, Geoffrey Arthur Jones
Life of this patent
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Abstract
A steam distributor that uses a porous metal plate to replace the conventional screen plate of a steam shower for distributing steam to a moving web such as the web of a paper making machine. Steam showers using a steam distributor with this porous metal plate can deliver extremely uniform steam to the surface of a paper web. Profiling steam showers constructed by using an array of the steam distributors are able to deliver the best profiling results for various paper products. The porous metal plate can be considered as an equivalent of a screen plate with thousands of micro-orifices arranged tightly in both the machine direction and the CD direction.
Claims24
A steam distributor for use with a machine that produces a web comprising:
- a steam housing having a steam inlet;
- and
- one or more porous metal plates mounted in said steam housing in an orientation to face said web when said steam distributor is mounted at a predetermined location on said web producing machine, each of said one or more porous metal plates being formed from metal powder that is sintered such that each of said one or more porous metal plates comprises micro orifices.
An apparatus for distributing a fluid for use with a machine that produces a web comprising:
- a fluid housing having a fluid inlet;
- and
- one or more porous metal plates mounted in said fluid housing in an orientation to face said web when said fluid distributing apparatus is mounted at a predetermined location on said web producing machine, each of said one or more porous metal plates being formed from metal powder that is sintered such that each of said one or more porous metal plates comprises micro orifices.
A steam shower for use with a machine that produces a web comprising:
- two or more steam housings, each of said two or more steam housings separated from an adjacent one of said two or more housings and having a steam inlet;
- and
- one or more porous metal plates mounted in each of said two or more steam housings in an orientation to face said web when said steam shower is mounted at a predetermined location on said web producing machine, each of said porous metal plates being formed from metal powder that is sintered such that each of said porous metal plates comprises micro orifices.
In combination:
- a machine for producing a web;
- and
- one or more fluid distributors each mounted at an associated one of one or more predetermined locations along said web producing machine, each of said one or more fluid distributors comprising:
- a fluid housing having a fluid inlet;
- and
- one or more porous metal plates mounted in said fluid housing in an orientation to face said web when each of said one or more fluid distributors is mounted at said associated one of said one or more predetermined locations, each of said one or more porous metal plates being formed from metal powder that is sintered such that each of said one or more porous metal plates comprises micro orifices.
In combination:
- a machine for producing a web;
- and
- one or more steam showers each mounted at an associated one of one or more predetermined locations along said web producing machine, each of said one or more steam showers comprising:
- two or more steam housings, each of said two or more steam housings being separated from an adjacent one of said two or more housings and having a steam inlet;
- and
- one or more porous metal plates mounted in each of said two or more steam housings in an orientation to face said web when each of said one or more steam showers is mounted at said associated one of said one or more predetermined locations, each of said porous metal plates being formed from metal powder that is sintered such that each of said porous metal plates comprises micro orifices.
Dependencies are inferred from the claim text.