US3744724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air distributing channel
Assignee: Sulzer AG
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Filing: 1972-03-24
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Granted: 1973-07-10
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Expires: 1992-03-24
Abstract
Abstract Air is distributed uniformly and at reduced outflow speed from the outlet of the channel. The perforated inner wall defines an air passage of linearly decreasing cross-section with the channel bottom to uniformly distribute the air. The next perforated wall defines a partitioned turbulence space to reduce air speed. The domed perforated wall defines a second turbulence space to further reduce air speed.
Inventors
- 👤 C Caille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:08
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/068
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
234 words
An air distributing channel having an air outlet end defining a longitudinally extending air passage and an inlet to said outlet end of predetermined crosssection; a first wall disposed within said outlet end of said channel to linearly decrease the cross-sectional area of said air passage in the longitudinal direction and having a plurality of longitudinally spaced apart openings therein for uniformly distributing air from said air passage therethrough, said openings having an effective opening cross-section substantially equal to said cross-section of said inlet; a second wall disposed longitudinally within said outlet end of said channel in spaced relation to said first wall to define a first turbulence space therebetween, said second wall having a plurality of openings therein for passage of air therethrough; a plurality of baffles positioned in longitudinally spaced relation within said first turbulence space to nullify the longitudinal flow components of the air passing through said first turbulence space; a third wall disposed longitudinally of said outlet end of said channel in spaced relation to said second wall to define a second turbulence space therebetween, said third wall having a plurality of openings therein for passage of air therethrough; and each of said plurality of openings in said second wall and said third wall having a gradually increasing effective opening cross-section relative to said openings in said first wall to effect a reduction iN speed in the air passing therethrough.
Claim 2
Dependent Claim
234 words
An air distributing channel having an air outlet end defining a longitudinally extending air passage and an inlet to said outlet end of predetermined crosssection; a first wall disposed within said outlet end of said channel to linearly decrease the cross-sectional area of said air passage in the longitudinal direction and having a plurality of longitudinally spaced apart openings therein for uniformly distributing air from said air passage therethrough, said openings having an effective opening cross-section substantially equal to said cross-section of said inlet; a second wall disposed longitudinally within said outlet end of said channel in spaced relation to said first wall to define a first turbulence space therebetween, said second wall having a plurality of openings therein for passage of air therethrough; a plurality of baffles positioned in longitudinally spaced relation within said first turbulence space to nullify the longitudinal flow components of the air passing through said first turbulence space; a third wall disposed longitudinally of said outlet end of said channel in spaced relation to said second wall to define a second turbulence space therebetween, said third wall having a plurality of openings therein for passage of air therethrough; and each of said plurality of openings in said second wall and said third wall having a gradually increasing effective opening cross-section relative to said openings in said first wall to effect a reduction iN speed in the air passing therethrough.
Claim 3
Dependent Claim
23 words
An air distributing channel as set forth in claim 1 wherein said openings in said walls are disposed laterally of said outlet end.
Claim 4
Dependent Claim
23 words
An air distributing channel as set forth in claim 1 wherein said baffles are plates disposed as partitions in said first turbulence space.
Claim 5
Dependent Claim
25 words
An air distributing channel as set forth in claim 1 wherein the ratio of effective opening cross-section of two adjacent plurality of openings is constant.
Claim 6
Dependent Claim
27 words
An air distributing channel as set forth in claim 1 wherein said baffles are spaced apart equally from one to four times the diameter of said channel.
Claim 7
Dependent Claim
38 words
An air distributing channel as set forth in claim 1 further having a wedge-shaped filler in a section of said outlet end in opposition to said first wall to linearly decrease said cross-sectional area of said air passage.
Claim 8
Dependent Claim
26 words
An air distributing channel as set forth in claim 1 wherein said third wall is in the form of an arch over said channel outlet end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |