Patent US3884654A successfully refreshed from Google Patents.
US3884654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for forming a homogeneous sheet of a flowing substance
Assignee: Tunzini Ameliorair SA
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Filing: 1972-01-17
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Granted: 1975-05-20
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Expires: 1992-01-17
Abstract
Abstract The device has at least one inclined trickling wall having a wet side and a dry side and means to cause the flowing substance to trickle over the wet side of this trickling wall. At least one complementary wall is constituted by a lower portion extending transversely beyond the extension of the wet side of the trickling wall and bounding with the lower edge of the trickling wall a separating slot. An upper portion extends upwardly from the dry side of the trickling wall and bounds with this dry side a reserve volume upwardly open and in communication with a zone of the device under suction with respect to the zone situated at the level of the lower edge of the trickling wall. The device is useful for washing a polluted gas such as air charged with paint fog from a painting enclosure or in coating machines.
Inventors
- 👤 Crevoisier Philippe De
- 👤 John George Stockholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:36
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; B01D45/00; B01D45/04; B01D45/08; B01D45/10; B01D47/02; B01D47/021; B01D47/027; B05; B05B; B05B14/00; B05B14/40; B05B14/46; B05B14/468; Y; Y02; Y02P; Y02P70/00; Y02P70/10; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
256 words
A device for producing a homogeneous sheet of liquid for washing polluted gas, the device comprising a liquid supply; an inclined first wall; means for causing liquid from said liquid supply to trickle down on one side of said first wall to form a sheet of liquid thereon; reserve means defining a reserve liquid volume, said reserve means comprising a second wall, said second wall being spaced from the other side of said first wall and having an upper portion facing said other side of said first wall to define a reserve liquid tank, and a lower portion extending from said upper portion and spaced below the lower edge of said first wall and cooperating with the lower edge of said first wall to define a slot, said lower portion extending transversely beyond the lower edge of said first wall; means for causing a stream of polluted gas to flow over said one side of said first wall so that said liquid will wash said gas; and means for placing the top surface of said reserve liquid volume in said reserve liquid tank in communication with a zone of the device situated downstream of the lower edge of said first wall with respect to the flow of polluted gas, such that, in operation, the lowered pressure induced by said stream is communicated to said reserve liquid tank and causes suction of liquid into the reserve tank through said slot, the liquid in the reserve tank being available to compensate for streaking in said sheet of liquid.
Claim 2
Independent Claim
256 words
A device for producing a homogeneous sheet of liquid for washing polluted gas, the device comprising a liquid supply; an inclined first wall; means for causing liquid from said liquid supply to trickle down on one side of said first wall to form a sheet of liquid thereon; reserve means defining a reserve liquid volume, said reserve means comprising a second wall, said second wall being spaced from the other side of said first wall and having an upper portion facing said other side of said first wall to define a reserve liquid tank, and a lower portion extending from said upper portion and spaced below the lower edge of said first wall and cooperating with the lower edge of said first wall to define a slot, said lower portion extending transversely beyond the lower edge of said first wall; means for causing a stream of polluted gas to flow over said one side of said first wall so that said liquid will wash said gas; and means for placing the top surface of said reserve liquid volume in said reserve liquid tank in communication with a zone of the device situated downstream of the lower edge of said first wall with respect to the flow of polluted gas, such that, in operation, the lowered pressure induced by said stream is communicated to said reserve liquid tank and causes suction of liquid into the reserve tank through said slot, the liquid in the reserve tank being available to compensate for streaking in said sheet of liquid.
Claim 3
Dependent Claim
22 words
A device according to claim 1, wherein said first wall is frustoconical, the axis thereof being vertical, said second wall being annular.
Claim 4
Dependent Claim
16 words
A device according to claim 1, wherein the lower portion of the second wall is horizontal.
Claim 5
Dependent Claim
17 words
A device according to claim 1, wherein the lower portion of the second wall is directed upwardly.
Claim 6
Dependent Claim
30 words
A device according to claim 1, wherein the upper edge of the second wall comprises a rounded extension projecting downwardly and in the opposite direction from the associated first wall.
Claim 7
Dependent Claim
46 words
A device according to claim 1, including a transverse wall arranged above said slot and projecting from the first wall toward the associated second wall, so as to define in cooperation with such second wall a passage through which liquid in the reserve tank can flow.
Claim 8
Dependent Claim
37 words
A device according to claim 6, wherein the transverse wall cooperates with the associated second wall to define a dead volume in which gaseous bubbles formed at the level of the associated slot can be temporarily retained.
Claim 9
Dependent Claim
17 words
A device according to claim 6, wherein the transverse wall is fixed to the associated first wall.
Claim 10
Dependent Claim
21 words
A device according to claim 8, wherein the transverse wall is fixed in sealing tight fashion to the associated first wall.
Claim 11
Dependent Claim
21 words
A device according to claim 6, wherein the transverse wall is fixed to the associated first wall above its lower edge.
Claim 12
Dependent Claim
24 words
A device according to claim 6, wherein the transverse wall is fixed to the associated first wall at the level of its lower edge.
Claim 13
Dependent Claim
45 words
A device according to claim 6, wherein the space between the transverse wall and the lower portion of the associated second wall is not greater than the space between the lower edge of the associated first wall and the lower portion of such second wall.
Claim 14
Dependent Claim
33 words
A device according to claim 1, comprising two of said first walls one of which extends below the other, and two of said second walls each associated with one of said first walls.
Claim 15
Dependent Claim
64 words
A device according to claim 13, wherein said first walls are arranged with their said one sides facing one another, a deflecting wall facing the lower edge of that first wall which extends below the other first wall, and a barrier surface being arranged below the lower edge of the deflecting wall to define, in cooperation with such lower edge, a gas discharge passage.
Claim 16
Dependent Claim
35 words
A device according to claim 14, wherein means are provided for adjusting the position of the deflecting wall with respect to the lower edge of that first wall which extends below the other first walL.
Claim 17
Dependent Claim
22 words
A device according to claim 15, wherein the deflecting wall is pivotally mounted and is adjustable by means of a drive member.
Claim 18
Dependent Claim
39 words
A device according to claim 15, wherein the deflecting wall is pivotally mounted and is adjustable by the combined action of the liquid impinging thereupon, of the polluted gas flow, and of the weight of the deflecting wall itself.
Claim 19
Dependent Claim
17 words
A device according to claim 17, including a damping device to restrain oscillation of the deflecting wall.
Claim 20
Dependent Claim
13 words
A device according to claim 14, wherein the deflecting wall is substantially vertical.
Claim 21
Dependent Claim
52 words
A device according to claim 14, wherein the deflecting wall is connected to the second wall associated with said other first wall, by an upper extension which terminates at such second wall, such upper extension being convex towards polluted gas flow and the deflecting wall being other than convex in such direction.
Claim 22
Dependent Claim
20 words
A device according to claim 14, wherein the barrier surface is constituted by the surface of a reservoir of liquid.
Claim 23
Dependent Claim
50 words
A device according to claim 21, wherein a separating plate for droplets of liquid extends substantially vertically, beyond said gas discharge and projects above the surface of the liquid of said reservoir, means being provided for removal of the washing liquid in reverse direction to the flow of polluted gas.
Claim 24
Dependent Claim
114 words
A device according to claim 14, wherein the distance X between that first wall which extends below the other first wall, and the second wall associated with the other first wall, is greater than the distance Y between the second wall associated with that first wall which extends below the other first wall, and the deflecting wall; the distance Z between the barrier surface and the lower edge of the deflecting wall is greater than said distance X; and the dimension Z1 of the portion of the deflecting wall which extends below the second wall associated with that first wall which extends below the other first wall, is greater than the said distance Y.
Claim 25
Dependent Claim
25 words
A device according to claim 23, wherein the parameters X, Y, Z and Z1 have the following relative values: X 2Y, Z 2X, Z1 2Y.
Claim 26
Dependent Claim
256 words
Device for producing a homogeneous sheet of liquid for washing polluted gas, the device comprising an inclined first wall, for trickling said liquid thereon, means for causing liquid to trickle down one side of said first wall to form a sheet of liquid thereon, a second wall complementary with said first wall and having an upper portion facing the other side of the first wall and a lower portion cooperating with the lower edge of said first wall to define a slot, the upper portion of the second wall cooperating with said other side of the first wall to define a reserve liquid tank which opens upwardly to communicate with a first chamber, and means for maintaining said first chamber at a lower pressure than a second chamber containing the lower edge of said one side of the first wall, such that, in operation, liquid flows from the reserve tank to compensate for streaking in said sheet of liquid, and means for causing a stream of polluted gas to flow over said one side of the first wall, to be washed by said liquid, including a transverse wall arranged above said slot and extending from the first wall towards the second wall, so as to form with the said first wall a section of passage through which the liquid contained in the reserve tank can flow, wherein the transverse wall is fixed on the first wall above the lower edge of said first wall, and the second wall has an elongated basin below the transverse wall.
Claim 27
Dependent Claim
256 words
Device for producing a homogeneous sheet of liquid for washing polluted gas, the device comprising an inclined first wall, for trickling said liquid thereon, means for causing liquid to trickle down one side of said first wall to form a sheet of liquid thereon, a second wall complementary with said first wall and having an upper portion facing the other side of the first wall and a lower portion cooperating with the lower edge of said first wall to define a slot, the upper portion of the second wall cooperating with said other side of the first wall to define a reserve liquid tank which opens upwardly to communicate with a first chamber, and means for maintaining said first chamber at a lower pressure than a second chamber containing the lower edge of said one side of the first wall, such that, in operation, liquid flows from the reserve tank to compensate for streaking in said sheet of liquid, and means for causing a stream of polluted gas to flow over said one side of the first wall, to be washed by said liquid, including a transverse wall arranged above said slot and extending from the first wall towards the second wall, so as to form with the said first wall a section of passage through which the liquid contained in the reserve tank can flow, wherein the transverse wall is fixed on the first wall above the lower edge of said first wall, and the second wall has an elongated basin below the transverse wall.
Claim 28
Dependent Claim
223 words
Device for producing a homogeneous sheet of liquid for washing polluted gas, the device comprising an inclined first wall, for trickling said liquid thereon, means for causing liquid to trickle down one side of said first wall to form a sheet of liquid thereon, a second wall complementary with said first wall and having an upper portion facing the other side of the first wall and a lower portion cooperating with the lower edge of said first wall to define a slot, the upper portion of the second wall cooperating with said other side of the first wall to define a reserve liquid tank which opens upwardly to communicate with a first chamber, and means for maintaining said first chamber at a lower pressure than a second chamber containing the lower edge of said one side of the first wall, such that, in operation, liquid flows from the reserve tank to compensate for streaking in said sheet of liquid, and means for causing a stream of polluted gas to flow over said one side of the first wall to be washed by said liquid, the second wall being mounted on the device by means of an articulation which enables said second wall to be moved relative to said first wall so that the distance between said first and second walls can be changed.
Claim 29
Dependent Claim
223 words
Device for producing a homogeneous sheet of liquid for washing polluted gas, the device comprising an inclined first wall, for trickling said liquid thereon, means for causing liquid to trickle down one side of said first wall to form a sheet of liquid thereon, a second wall complementary with said first wall and having an upper portion facing the other side of the first wall and a lower portion cooperating with the lower edge of said first wall to define a slot, the upper portion of the second wall cooperating with said other side of the first wall to define a reserve liquid tank which opens upwardly to communicate with a first chamber, and means for maintaining said first chamber at a lower pressure than a second chamber containing the lower edge of said one side of the first wall, such that, in operation, liquid flows from the reserve tank to compensate for streaking in said sheet of liquid, and means for causing a stream of polluted gas to flow over said one side of the first wall to be washed by said liquid, the second wall being mounted on the device by means of an articulation which enables said second wall to be moved relative to said first wall so that the distance between said first and second walls can be changed.
Claim 30
Dependent Claim
22 words
Device according to calim 26, wherein the articulation of the second wall is situated towards the upper edge of the second wall.
Claim 31
Dependent Claim
22 words
Device according to calim 26, wherein the articulation of the second wall is situated towards the upper edge of the second wall.
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |