Patent US4239512A successfully refreshed from Google Patents.
US4239512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air washer particularly for paint spray booths
Assignee: Binks Sames Corp
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Filing: 1978-02-13
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Granted: 1980-12-16
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Expires: 1998-02-13
Abstract
Abstract Air or other gases containing contaminants or requiring treatment are moved into at least one substantially continuous sheet of treating liquid at the entrance to a streamline flow passage. A nozzle mounted adjacent the entrance end of the flow passage forms one or more substantially continuous solid sheets of treating liquid covering the entrance to the passage. The passage has a convex throat and an exit smaller than the entrance so that the gas and treating liquid entrained therein move through the passage at an accelerating velocity with smooth, non-turbulent, unidirectional flow, and are discharged therefrom with no discernible turbulence or splashing. The gas and the treating liquid are discharged from the flow passaage into an eliminator chamber of large volume, whereupon the treating liquid and any entrained contaminants drop out of and are separated from the gas. The invention is particularly adapted to paint spray booths for removal of paint overspray from the booth ventilating air prior to discharge of the air to atmosphere.
Inventors
- 👤 Frank L. Dobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:46
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/06; B01D47/00; B01D47/02; B01D47/022; B01D50/00; B05; B05B; B05B14/00; B05B14/40; B05B14/46; B05B14/468; Y; Y02; Y02P; Y02P70/00; Y02P70/10; Y10; Y10S; Y10S261/00; Y10S261/54; Y10S55/00; Y10S55/46
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
163 words
A method of removing contaminants from a gas comprising the steps of: generating at least one substantially continuous sheet of washing liquid across the entrance to a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area from its entrance to its exit, the sheet of washing liquid emanating from the axis of the streamline flow-passage substantially perpendicular to said axis at the entrance of said flow passage and completely covering the cross-sectional area of the flow-passage adjacent the entrance thereof; simultaneously moving a gas into the entrance of the flow passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and washing liquid entrained therein through said flow-passage at continuously accelerating velocity in a substantially laminar unidirectional flow free of discernible turbulence; discharging the gas and washing liquid from said flow-passage and decelerating the gas outwardly of the flow-passage for separating the gas from the liquid and wetted contaminants.
Claim 2
Independent Claim
163 words
A method of removing contaminants from a gas comprising the steps of: generating at least one substantially continuous sheet of washing liquid across the entrance to a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area from its entrance to its exit, the sheet of washing liquid emanating from the axis of the streamline flow-passage substantially perpendicular to said axis at the entrance of said flow passage and completely covering the cross-sectional area of the flow-passage adjacent the entrance thereof; simultaneously moving a gas into the entrance of the flow passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and washing liquid entrained therein through said flow-passage at continuously accelerating velocity in a substantially laminar unidirectional flow free of discernible turbulence; discharging the gas and washing liquid from said flow-passage and decelerating the gas outwardly of the flow-passage for separating the gas from the liquid and wetted contaminants.
Claim 3
Independent Claim
154 words
A method treating a gas comprising the steps of: generating at least one substantially continuous sheet of liquid across the entrance to a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area from its entrance to its exit, the sheet of liquid emanating from the axis of the streamline flow passage substantially perpendicular to said axis at the entrance of said flow passage and completely covering the cross-sectional area of the flow-passage adjacent the entrance thereof; simultaneously moving a gas into the entrance of said flow passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and liquid entrained therein through said flow-passage at continuously accelerating velocity in a substantially laminar unidirectional flow free of discernible turbulence; discharging the gas and liquid from said flow-passage and decelerating the gas outwardly of the flow-passage for separating the gas from the liquid.
Claim 4
Independent Claim
154 words
A method treating a gas comprising the steps of: generating at least one substantially continuous sheet of liquid across the entrance to a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area from its entrance to its exit, the sheet of liquid emanating from the axis of the streamline flow passage substantially perpendicular to said axis at the entrance of said flow passage and completely covering the cross-sectional area of the flow-passage adjacent the entrance thereof; simultaneously moving a gas into the entrance of said flow passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and liquid entrained therein through said flow-passage at continuously accelerating velocity in a substantially laminar unidirectional flow free of discernible turbulence; discharging the gas and liquid from said flow-passage and decelerating the gas outwardly of the flow-passage for separating the gas from the liquid.
Claim 5
Independent Claim
165 words
A method of conditioning a gas comprising the steps of: defining a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area in direction of flow; generating at least one substantially continuous sheet of liquid emanating from the axis of the streamline flow passage substantially perpendicular to said axis at the entrance of said flow passage for completely covering the cross-sectional area of the entrance of the flow-passage with a substantially continuous curtain of liquid; moving the gas into the entrance of said flow-passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and liquid entrained therein through said passage at continuously accelerating velocity in a substantially unidirectional flow free of discernible turbulence; and discharging the gas and liquid from the exit of said flow passage substantially without obstruction into a chamber of large volumetric capacity, so as to decelerate the gas and cause the liquid to be separated from the gas.
Claim 6
Independent Claim
165 words
A method of conditioning a gas comprising the steps of: defining a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area in direction of flow; generating at least one substantially continuous sheet of liquid emanating from the axis of the streamline flow passage substantially perpendicular to said axis at the entrance of said flow passage for completely covering the cross-sectional area of the entrance of the flow-passage with a substantially continuous curtain of liquid; moving the gas into the entrance of said flow-passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and liquid entrained therein through said passage at continuously accelerating velocity in a substantially unidirectional flow free of discernible turbulence; and discharging the gas and liquid from the exit of said flow passage substantially without obstruction into a chamber of large volumetric capacity, so as to decelerate the gas and cause the liquid to be separated from the gas.
Claim 7
Independent Claim
158 words
A method of removing contaminants from a gas comprising the steps of: defining a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area; generating at least one substantially continuous sheet of washing liquid emanating from the axis of the streamline flow passage substantially perpendicular to said axis at the entrance of said flow passage for completely filling the cross-sectional area of the entrance of the flow-passage with a substantially continuous curtain of washing liquid; moving the gas into the entrance of said flow-passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and washing liquid entrained therein through said flow-passage at continuously accelerating velocity in a substantially unidirectional flow free of discernible turbulence; and discharging the gas and washing liquid from the exit of said flow-passage and decelerating the gas outwardly of the flow-passage for separating the gas from the liquid and wetted contaminants.
Claim 8
Independent Claim
158 words
A method of removing contaminants from a gas comprising the steps of: defining a streamline flow-passage having a smoothly curved convex interior surface progressively decreasing in cross-sectional area; generating at least one substantially continuous sheet of washing liquid emanating from the axis of the streamline flow passage substantially perpendicular to said axis at the entrance of said flow passage for completely filling the cross-sectional area of the entrance of the flow-passage with a substantially continuous curtain of washing liquid; moving the gas into the entrance of said flow-passage and through the sheet of liquid for admixing the gas and the liquid; substantially simultaneously accelerating the gas and washing liquid entrained therein through said flow-passage at continuously accelerating velocity in a substantially unidirectional flow free of discernible turbulence; and discharging the gas and washing liquid from the exit of said flow-passage and decelerating the gas outwardly of the flow-passage for separating the gas from the liquid and wetted contaminants.
Claim 9
Dependent Claim
27 words
The method of claim 4, including the step of defining the smoothly curved convex interior surface of the flow-passage by substantially a 90° arc of uniform radius.
Claim 10
Dependent Claim
25 words
The method of claim 5, including the step of defining a streamline flow-passage having an axial length equal to about one-half of the exit diameter.
Claim 11
Dependent Claim
40 words
The method according to claim 4, wherein the separating step includes the step of impinging the gas liquid mixture against a sweep sheet so that the liquid and contaminants are flowed to a drain and the gas is separately exhausted.
Claim 12
Dependent Claim
47 words
The method according to claim 4, including the step of maintaining a plurality of substantially continuous solid sheets of washing liquid covering the entrance to the flow passage, said plurality of sheets emanating from the axis of said flow passage in axially spaced relationship to each other.
Claim 13
Dependent Claim
12 words
The method according to claim 4 wherein the washing liquid comprises oil.
Claim 14
Dependent Claim
19 words
The method according to claim 4 wherein the washing liquid comprises a mixture of water and water miscible oil.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |