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US3745752A Expired / Lapsed US ⏱️ 0.0 years remaining

Fluid inlet structure for cyclone collectors

Assignee: Envirotech Corp
•
Filing: 1970-12-30
•
Granted: 1973-07-17
•
Expires: 1990-12-30
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Abstract

Abstract A fluid inlet structure for a cyclone collector includes an inlet conduit having an inlet end opening remote from the cyclone chamber and an outlet opening which constitutes the inlet to the chamber. An inlet flow guide has an upstream portion substantially contiguous to the inlet conduit and an outer wall which converges with the chamber in the downstream direction for guiding fluid flowing through the inlet conduit into the chamber. The cross-sectional shape and dimensions of the inlet conduit vary in size along the direction of flow for gradually generating a velocity gradient in the fluid conduit flow at the outlet opening such that the velocities of flow streams at the outlet opening are greater, the greater the distance they are from the housing axis. This velocity gradient results in all fluid entering the flow guide at about the same given point in time tending to progress around the guide substantially along an imaginary rotating plane and inhibits the formation of eddy currents in the inlet flow guide.

Inventors

  • 👤 C Gallaer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 15:23
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/02; B04C5/04

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 141 words
In a cyclone separator of the type having a housing defining a generally cylindrical chamber for the whirling circulator of a fluid and an inlet flow guide connected thereto which includes upper, lower and outer walls defining an outwardly confined and inwardly opened flow path for conducting fluid generally tangentially into the housing, the improvement comprising: a. an inlet conduit which is arranged generally tangentially to tHe housing, said conduit having an outlet connected to the inlet of the flow guide, an inlet remote from the housing, an inner sidewall and an outer sidewall, and top and bottom walls; b. said inlet conduit gradually increasing in cross-sectional area from its inlet to its outlet, and the vertical dimension of the cross-sectional area at the outlet gradually increasing from a minimum at the outer side to a maximum near the inner side.
Claim 2
Dependent Claim 141 words
In a cyclone separator of the type having a housing defining a generally cylindrical chamber for the whirling circulator of a fluid and an inlet flow guide connected thereto which includes upper, lower and outer walls defining an outwardly confined and inwardly opened flow path for conducting fluid generally tangentially into the housing, the improvement comprising: a. an inlet conduit which is arranged generally tangentially to tHe housing, said conduit having an outlet connected to the inlet of the flow guide, an inlet remote from the housing, an inner sidewall and an outer sidewall, and top and bottom walls; b. said inlet conduit gradually increasing in cross-sectional area from its inlet to its outlet, and the vertical dimension of the cross-sectional area at the outlet gradually increasing from a minimum at the outer side to a maximum near the inner side.
Claim 3
Dependent Claim 127 words
An inlet structure in accordance with claim 1, wherein the inlet conduit includes a bottom panel composed of (1) a first section that is attached to the conduit inner wall along the lower edge thereof and (2) a second section that is attached to the first section along a diagonal joint extending from the lower edge of the outer wall adjacent the inlet end opening generally to a point where the radial-axial plane of the outlet opening intersects the cylindrical housing, the second section also being attached to the conduit outer wall along the lower edge thereof and to the lower wall of the guide, and wherein the first section of the bottom panel slopes downwardly from the conduit inlet end opening toward the outlet end opening.
Claim 4
Dependent Claim 26 words
A fluid inlet structure in accordance with claim 1, wherein the lower wall of the guide is a partial conical section substantially concentric with the housing.
Claim 5
Dependent Claim 52 words
A fluid inlet structure in accordance with claim 3, wherein the outer wall of the guide is substantially parallel to the housing axis and is of gradually increasing height along the direction of flow, such that the width of the lower wall of the guide decreases in the downstream direction of flow.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-16 1977-01-15 1977-07-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-16 1981-01-15 1981-07-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-16 1985-01-15 1985-07-17 $7700.00 Window Closed / Lapsed

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