US4407450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of aerodynamic production of liquid and solid disperse aerosols
Assignee: VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT SINTETICHESKIKH VOLOKON
•
Filing: 1980-10-30
•
Granted: 1983-10-04
•
Expires: 2000-10-30
Abstract
Abstract The method consists in that the liquid or solid particles being dispersed are brought in contact with a gas stream, which then conveys said particles till their collision with an obstacle, whereas said gas stream is subjected to symmetrical compression with gas streams whose discharge velocity 1.2 to 20 times that of the gas stream that conveys liquid or solid particles, and said symmetrical gas streams are so directed as to provide their homocentric convergence at an angle of from 30° to 90° on the obstacle. The method enables production of liquid and solid aerosols with a degree of dispersity below 1 μm within a narrow range of particle sizes.
Inventors
- 👤 Alexandr S. Chegolya
- 👤 Vladimir A. Malykh
- 👤 Vladimir V. Chizhov
- 👤 Viktor I. Yankov
- 👤 Nikolai I. Pirog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:03
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/08; B05B7/0807; B05B7/0861
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
A method of aerodynamically producing an aerosol of solid or liquid particles, comprising developing a main gas stream with entrained atomized liquid or solid particles, compressing the main gas stream radially and constricting it during axial travel thereof by application thereto of at least three converging gaseous streams symmetrically disposed circumferentially of said main gas stream and converging to a given point of convergence, impacting the compressed main gas stream with the entrained particles therein on a solid obstacle having curvature at the point of convergence of the gaseous streams, and the point of convergence being disposed on a curved surface of said obstacle on which the main gaseous stream and said particles are impacted, and the three gaseous streams constricting the main gas stream upstream of said obstacle to maintain it in a constricted state during axial travel thereof until it strikes said obstacle, whereby an aerosol dispersion of the particles is developed at said obstacle.
Claim 2
Independent Claim
157 words
A method of aerodynamically producing an aerosol of solid or liquid particles, comprising developing a main gas stream with entrained atomized liquid or solid particles, compressing the main gas stream radially and constricting it during axial travel thereof by application thereto of at least three converging gaseous streams symmetrically disposed circumferentially of said main gas stream and converging to a given point of convergence, impacting the compressed main gas stream with the entrained particles therein on a solid obstacle having curvature at the point of convergence of the gaseous streams, and the point of convergence being disposed on a curved surface of said obstacle on which the main gaseous stream and said particles are impacted, and the three gaseous streams constricting the main gas stream upstream of said obstacle to maintain it in a constricted state during axial travel thereof until it strikes said obstacle, whereby an aerosol dispersion of the particles is developed at said obstacle.
Claim 3
Dependent Claim
70 words
A method of aerodynamically producing an aerosol of solid or liquid particles according to claim 1, in which the gas streams disposed symmetrically about the main gas stream have a velocity which is 1.2 to 20 times the velocity of the main gas stream and said gas streams are disposed to effect homocentric convergence at an angle on the obstacle and said angle of convergence ranging from 30° to 90°.
Claim 4
Dependent Claim
162 words
Apparatus for aerodynamically producing an aerosol of solid or liquid particles comprising, atomizer means for developing a gaseous main stream having particles of a solid or liquid particles comprising, atomizer means for developing a gaseous main stream having particles of a solid or liquid dispersed therein, other nozzle means for applying at least three converging gaseous streams symmetrically about the main gaseous stream to effectively compress the gaseous main stream radially constricting it during axial travel thereof and converging at a point of convergence downstream of said nozzle means, and solid means having a curved surface at said point of convergence on which the radial compressed gaseous main stream and the converging gaseous streams impact, and said other nozzle means being disposed for applying said gaseous streams to said main stream upstream of said solid means constricting it along its path of travel axially until it impacts said curved surface, whereby the streams develop an aerosol of the particles upon said impact.
Claim 5
Dependent Claim
162 words
Apparatus for aerodynamically producing an aerosol of solid or liquid particles comprising, atomizer means for developing a gaseous main stream having particles of a solid or liquid particles comprising, atomizer means for developing a gaseous main stream having particles of a solid or liquid dispersed therein, other nozzle means for applying at least three converging gaseous streams symmetrically about the main gaseous stream to effectively compress the gaseous main stream radially constricting it during axial travel thereof and converging at a point of convergence downstream of said nozzle means, and solid means having a curved surface at said point of convergence on which the radial compressed gaseous main stream and the converging gaseous streams impact, and said other nozzle means being disposed for applying said gaseous streams to said main stream upstream of said solid means constricting it along its path of travel axially until it impacts said curved surface, whereby the streams develop an aerosol of the particles upon said impact.
Claim 6
Dependent Claim
23 words
Apparatus for aerodynamically producing an aerosol of solid or liquid particles according to claim 3, in which said solid means is a sphere.
References Cited (Backward Citations)
US735287A
Cited
GB154736A
Cited
US1411470A
Cited
US1633291A
Cited
US1876669A
Cited
FR809837A
Cited
US2247548A
Cited
GB558604A
Cited
US3085865A
Cited
US3790080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |