US4358341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray dryer
Assignee: Henningsen Foods Inc
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Filing: 1981-03-26
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Granted: 1982-11-09
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Expires: 2001-03-26
Abstract
Abstract An improved spray dryer is disclosed for drying heat sensitive food products under sanitary conditions with a maximum product recovery for a minimal dryer size. The dryer has an air flow system for moving air through a drying chamber at generally atmospheric pressure with a controlled laminar air flow. The product being dried is sprayed into the drying chamber by an air distributor plate with a relatively rapid air flow through and immediately surrounding the product spray and with a surrounding air flow of lower velocity. The dried droplets or powder are removed by a powder collector including a drag system.
Inventors
- 👤 Dwight H. Bergquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:12
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/10; F26B3/12; B; B01; B01D; B01D1/00; B01D1/16; B01D1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A horizontally disposed air supply manifold and a drying chamber having a flat top and side and bottom walls for directing air thru said drying chamber with a flow generally parallel to said walls throughout said chamber and having an initial flow pattern of a plurality of generally parallel streams of high velocity and streams of relatively low velocity and of thereafter having a single blended generally parallel flowing air stream having uniform velocity across the stream and having an air distribution plate therein comprising the combination of: a flat plate member; a plurality of elongated first cylindrically tubular nozzles mounted in spaced positions in said plate for passing air at relatively high velocity; a plurality of relatively shorter and smaller diameter second elongated tubular nozzles mounted throughout said plate with generally uniform spacing and surrounding said first nozzles for passing air at a lower velocity; said first and second nozzles having their axes positioned perpendicularly to said flat plate; fluid atomizers mounted beyond the air outlets of said first nozzles, and means at the air exit ends of said first nozzles for causing a flare of the air flowing from said second nozzles.
Claim 2
Dependent Claim
194 words
A horizontally disposed air supply manifold and a drying chamber having a flat top and side and bottom walls for directing air thru said drying chamber with a flow generally parallel to said walls throughout said chamber and having an initial flow pattern of a plurality of generally parallel streams of high velocity and streams of relatively low velocity and of thereafter having a single blended generally parallel flowing air stream having uniform velocity across the stream and having an air distribution plate therein comprising the combination of: a flat plate member; a plurality of elongated first cylindrically tubular nozzles mounted in spaced positions in said plate for passing air at relatively high velocity; a plurality of relatively shorter and smaller diameter second elongated tubular nozzles mounted throughout said plate with generally uniform spacing and surrounding said first nozzles for passing air at a lower velocity; said first and second nozzles having their axes positioned perpendicularly to said flat plate; fluid atomizers mounted beyond the air outlets of said first nozzles, and means at the air exit ends of said first nozzles for causing a flare of the air flowing from said second nozzles.
References Cited (Backward Citations)
DE2148051A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |