Article comprising a diffuser with flow control features

A diffuser, the first fluid technology, applied in the direction of conveying bulk materials, transportation and packaging, conveyors, etc., can solve problems such as unstable flow
CN1423581AInactive Publication Date: 2003-06-11DELSYS PHARMA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DELSYS PHARMA
Publication Date
2003-06-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

A diffuser comprises a conduit having a cross-sectional area that increases in a direction fluid flow. In one embodiment, the diffuser is used to reduce the incidence and severity of flow fluctuations that occur in an electrostatic deposition apparatus. In some embodiments, the diffuser includes one or more flow control features. A first flow-control feature comprises one or more appropriately-shaped annular slits through which fluid having a greater momentum than a primary fluid moving through the diffuser is injected into the "boundary layer" near the wall of the diffuser. A second flow control feature comprises one or more annular slits or, alternatively, slots or holes that are disposed at appropriate locations around the circumference of the diffuser through which a portion of fluid flowing in the boundary layer is removed. Boundary-layer flow removal is effected, in one embodiment, by creating a pressure differential across such annular slit or slots. Among other benefits, such flow control features reduce any tendencies for flow separation of the primary fluid in the diffuser.
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Description

[0001] Declaration of related application

[0002] The present invention relates to the international patent application PCT / US99 / 12772 entitled "Drugs and methods and equipment for manufacturing the same" filed on June 8, 1999. Technical field

[0003] The present invention relates to improvements in equipment for manufacturing medicines. Background technique

[0004] In the pharmaceutical industry, drugs are usually tablets, caplets, test strips, capsules, etc. These drugs include diagnostic products, which include one or more "unit dosage forms" or "unit diagnostic forms" (collectively referred to as "unit forms").

[0005] Each unit form usually contains at least one drug or biologically active ingredient (collectively referred to as "active ingredient") and inert / inactive ingredients. These active and inactive ingredients, usually in powder form, are suitable for processing into unit forms.

[0006] In the above-cited international patent application, the applicant discloses ...

Claims

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