US3740865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying installation
Assignee: Individual
•
Filing: 1971-02-01
•
Granted: 1973-06-26
•
Expires: 1991-02-01
Abstract
Abstract An installation for the drying by atomization of products dissolved or suspended in a liquid, comprising a drying chamber provided at one end with supply means for supplying drying air into the interior of the drying chamber, and atomizing means for atomizing the liquid to be dried and directing the aforesaid liquid into the flow of drying air. The drying chamber is provided at the other end with discharge means for the discharge of the portion of powder produced which deposits in the chamber, and at least one discharge aperture for the discharge of the drying air and of the portion of the powder entrained by the latter. The discharge aperture communicates with an air powder separator.
Inventors
- 👤 P Laguilharre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:27
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
205 words
An apparatus for the drying by atomization of a product dissolved or suspended in a liquid comprising means defining a drying chamber provided at one end with supply means for supplying drying air into the interior of the drying chamber and atomizing means for atomizing the liquid to be dried and directing the aforesaid liquid into the flow of drying air, the drying chamber being provided at the other end with discharge means for the discharge of the portion of powder produced which deposits in the chamber and at least one discharge aperture separate from said discharge means for the discharge of the drying air and the portion of powder entrained by the latter, said discharge aperture communicating with an air/powder separator means wherein the separator means is a double-flow air/powder separator which is arranged adjacent the drying chamber and provided with a powder discharge outlet leading into the interior of the drying chamber adjacent said other end thereof and at least one auxiliary air injection device for injecting auxiliary air into the interior of the said separator and towards the said chamber, the direction of air flowing through the said injection device being the resultant of an axial component and of a tangential component.
Claim 2
Independent Claim
205 words
An apparatus for the drying by atomization of a product dissolved or suspended in a liquid comprising means defining a drying chamber provided at one end with supply means for supplying drying air into the interior of the drying chamber and atomizing means for atomizing the liquid to be dried and directing the aforesaid liquid into the flow of drying air, the drying chamber being provided at the other end with discharge means for the discharge of the portion of powder produced which deposits in the chamber and at least one discharge aperture separate from said discharge means for the discharge of the drying air and the portion of powder entrained by the latter, said discharge aperture communicating with an air/powder separator means wherein the separator means is a double-flow air/powder separator which is arranged adjacent the drying chamber and provided with a powder discharge outlet leading into the interior of the drying chamber adjacent said other end thereof and at least one auxiliary air injection device for injecting auxiliary air into the interior of the said separator and towards the said chamber, the direction of air flowing through the said injection device being the resultant of an axial component and of a tangential component.
Claim 3
Dependent Claim
24 words
An apparatus as claimed in claim 1 wherein the drying chamber is substantially cyLindrical and the double-flow separator is juxtaposed coaxially to said chamber.
Claim 4
Dependent Claim
68 words
An apparatus as claimed in claim 1 wherein the drying chamber is provided with at least one secondary air admission device for directing into the interior of the drying chamber a current of secondary air, the direction of which has an axial component, the axial components of the secondary air in the drying chamber and of the auxiliary air in the separator being directed one towards the other.
Claim 5
Dependent Claim
58 words
An apparatus as claimed in claim 3 wherein at least one secondary air admission device is arranged so that, in operation, the secondary air admitted into the drying chamber also has a tangential component, the tangential components of the secondary air in the drying chamber and of the auxiliary air in the separator being in the same direction.
Claim 6
Dependent Claim
33 words
An apparatus as claimed in claim 1 wherein the double-flow separator contains a plurality of auxiliary air injection devices, arranged to be fed with air at different temperatures and/or with different humidity contents.
Claim 7
Dependent Claim
44 words
An apparatus as claimed in claim 1 wherein at its part adjacent to the double-flow separator the drying chamber is provided with a widened portion in which all the powder produced collects and on the periphery of which a powder discharge aperture is provided.
Claim 8
Dependent Claim
50 words
An apparatus as claimed in claim 1 wherein the powder outlet of the separator leading into the drying chamber is constituted by an annular space formed around a diaphragm through which there passes a pipe for the passage into the separator of the drying air coming from the drying chamber.
Claim 9
Dependent Claim
22 words
An apparatus as claimed in claim 7 wherein the diaphragm is situated at the junction between the drying chamber and the separator.
Claim 10
Dependent Claim
13 words
An apparatus as claimed in claim 7 wherein the diaphragm is movable axially.
Claim 11
Dependent Claim
33 words
An apparatus as claimed in claim 1 wherein the drying chamber is horizontal and of substantially ovoid section, the bottom of said chamber forming a spout in which the discharge means are disposed.
Claim 12
Dependent Claim
34 words
An apparatus as claimed in claim 10 wherein the drying chamber is horizontal and the section of the widened portion is substantially ovoid, the bottom of said widened portion constituting a powder extraction hopper.
Claim 13
Dependent Claim
29 words
An apparatus as claimed in claim 1 wherein the drying chamber is substantially vertical and the discharge aperture communicating with the double-free separator is surmounted by a removable deflector.
Claim 14
Dependent Claim
35 words
An apparatus as claimed in claim 1, wherein the drying chamber is substantially vertical and the bottom of the drying chamber forms a volute, a widened end of which leads into the powder discharge means.
Claim 15
Dependent Claim
25 words
An apparatus as claimed in claim 1, wherein the drying chamber is substantially vertical and the bottom of said chamber is movable about its axis.
Claim 16
Independent Claim
217 words
An apparatus for the drying by atomization of products dissolved or suspended in a liquid comprising a drying chamber provided at one end with supply means for supplying drying air into the interior of the drying chamber and atomizing means for atomizing the liquid to be dried and directing the aforesaid liquid into the flow of drying air, the drying chamber being provided at the other end with discharge means for the discharge of the portion of powder produced which deposits in the chamber and at least one discharge aperture for the discharge of the drying air and the portion of powder entrained by the latter, said at least one discharge aperture communicating with an air/powder separator wherein the separator is a double-flow, air/powder separator which is arranged adjacent the drying chamber and provided with a powder outlet leading into the interior of the drying chamber and at least one auxiliary air injection device for injecting auxiliary air into the interior of the said separator and towards the said chamber, the direction of air flowing through the said at least one injection device being the resultant of an axial component and of a tangential component, and a differential measuring device for measuring the pressure differential in the adjacent zones of the double-flow separator and the drying chamber.
Claim 17
Independent Claim
217 words
An apparatus for the drying by atomization of products dissolved or suspended in a liquid comprising a drying chamber provided at one end with supply means for supplying drying air into the interior of the drying chamber and atomizing means for atomizing the liquid to be dried and directing the aforesaid liquid into the flow of drying air, the drying chamber being provided at the other end with discharge means for the discharge of the portion of powder produced which deposits in the chamber and at least one discharge aperture for the discharge of the drying air and the portion of powder entrained by the latter, said at least one discharge aperture communicating with an air/powder separator wherein the separator is a double-flow, air/powder separator which is arranged adjacent the drying chamber and provided with a powder outlet leading into the interior of the drying chamber and at least one auxiliary air injection device for injecting auxiliary air into the interior of the said separator and towards the said chamber, the direction of air flowing through the said at least one injection device being the resultant of an axial component and of a tangential component, and a differential measuring device for measuring the pressure differential in the adjacent zones of the double-flow separator and the drying chamber.
Claim 18
Dependent Claim
31 words
An apparatus as claimed in claim 15 wherein the measuring device is associated with regulating means for regulating the flow of air passing from the double-flow separator into the drying chamber.
Claim 19
Dependent Claim
23 words
An apparatus as claimed in claim 16 wherein the regulating means act on the flow of auxiliary air injected into the double-flow separator.
Claim 20
Dependent Claim
23 words
An apparatus as claimed in claim 16, wherein the regulating means act on the flow of secondary air admitted into the drying chamber.
Claim 21
Dependent Claim
28 words
An apparatus as claimed in claim 16, wherein the regulating means vary the position of the diaphragm in relation to the drying chamber wall adjacent the double-flow separator.
Claim 22
Independent Claim
288 words
An apparatus for the drying by atomization of a product dissolved or suspended in a liquid, comprising: wall means defining a drying chamber; first inlet means communicating with one end of said drying chamber for supplying drying air into the interior of said chamber; second inlet means communicating with said one end of said drying chamber for supplying a liquid thereto, said liquid having a product dissolved or suspended therein, said second inlet means having atomizing means associated therewith for atomizing the liquid to be dried and directing the liquid into the flow of drying air; first outlet means associated with the other end of said drying chamber for permitting the discharge of the portion of the powder which deposits in the chamber; second outlet means associated with said other end of said drying chamber and separate from said first outlet means for discharging the drying air from said chamber, said drying air having a portion of the powder entrained therein; a double-flow air/powder separator means disposed adjacent said other end of said drying chamber for receiving the drying air as discharged from said drying chamber and for separating the entrained powder therefrom; said separator means including third inlet means communicating with said second outlet means for causing the air discharged from said drying chamber to be supplied to one end of the separator chamber as defined by said separator means; third outlet means associated with said one end of said separator chamber and communicating with said other end of said drying chamber for permitting the powder separated from the drying air within said separator chamber to be supplied to said drying chamber; and fourth outlet means communicating with said separating chamber for permitting discharge of air therefrom.
Claim 23
Independent Claim
288 words
An apparatus for the drying by atomization of a product dissolved or suspended in a liquid, comprising: wall means defining a drying chamber; first inlet means communicating with one end of said drying chamber for supplying drying air into the interior of said chamber; second inlet means communicating with said one end of said drying chamber for supplying a liquid thereto, said liquid having a product dissolved or suspended therein, said second inlet means having atomizing means associated therewith for atomizing the liquid to be dried and directing the liquid into the flow of drying air; first outlet means associated with the other end of said drying chamber for permitting the discharge of the portion of the powder which deposits in the chamber; second outlet means associated with said other end of said drying chamber and separate from said first outlet means for discharging the drying air from said chamber, said drying air having a portion of the powder entrained therein; a double-flow air/powder separator means disposed adjacent said other end of said drying chamber for receiving the drying air as discharged from said drying chamber and for separating the entrained powder therefrom; said separator means including third inlet means communicating with said second outlet means for causing the air discharged from said drying chamber to be supplied to one end of the separator chamber as defined by said separator means; third outlet means associated with said one end of said separator chamber and communicating with said other end of said drying chamber for permitting the powder separated from the drying air within said separator chamber to be supplied to said drying chamber; and fourth outlet means communicating with said separating chamber for permitting discharge of air therefrom.
Claim 24
Dependent Claim
101 words
An apparatus according to claim 20, wherein the drying chamber and the separation chamber are disposed adjacent and in substantial axial alignment with one another, said second outlet means and said third inlet means being substantially in alignment for permitting the drying air to flow directly from the drying chamber into the separation chamber, and said third outlet means comprising an annular ring-like opening disposed in surrounding relationship to said third inlet means for providing direct communication from said one end of said separation chamber to said other end of said drying chamber in the vicinity of said first outlet means.
Claim 25
Dependent Claim
90 words
An apparatus according to claim 21, wherein said separator means includes an air injection device for causing auxiliary air to flow in a helical pattern around and axially of the separator chamber in a direction toward said one end thereof for causing the entrained powder to be separated from said drying air and transported through the third outlet means, and said fourth outlet means being substantially coaxially aligned with the third inlet means and disposed in communication with said other end of said separator chamber for discharging the air therefrom.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |