[특허]Methods and systems for creating aerosols

Methods and systems for creating aerosols 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B05B-003/02 B05B-003/10 B05B-015/04 B05B-017/04 B01J-013/00 B05B-005/057 B05C-001/08 B05B-007/00
출원번호	US-0066435 (2013-10-29)
등록번호	US-10016777 (2018-07-10)
발명자 / 주소	Beck, Victor Johnson, David Mathew
출원인 / 주소	Palo Alto Research Center Incorporated
대리인 / 주소	Marger Johnson
인용정보	피인용 횟수 : 0 인용 특허 : 33

초록 ▼

Aerosols can be created by filament stretching and breaking of Newtonian and non-Newtonian fluids by applying a strain to and stretching the fluid. The fluid is stretched along a strain pathway and forms a fluid filament. The fluid filament is caused to break into droplets that can be harvested to form a mist or aerosol. Such a system for aerosol creation can include a pair of counter-rotating rollers that are positioned adjacent to each other that stretch the fluid or a pair of pistons that move toward and away from each other to stretch the fluid.

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1. An aerosol creation system, comprising: a pair of counter-rotating rollers comprising an upper roller and a lower roller that are positioned adjacent each other and define a nip between each other, the nip having an upstream side and a downstream side;a fluid source that is located above but not in direct contact with the top roller that coats the top roller with a flow of fluid; anda driving element that is structured to drive the pair of counter-rotating rollers to rotate in counter rotation with respect to each other and is configured to cause the fluid coating to be drawn through the nip to the downstream side of the nip and to cause the fluid to adhere to one of the rollers, the fluid stretched on the downstream side of the nip between respective surfaces of each of the counter-rotating rollers to form a fluid filament, the fluid filament stretched until the fluid filament breaks into a plurality of droplets. 2. The aerosol creation system of claim 1, wherein at least one of the pair of rollers includes a single material. 3. The aerosol creation system of claim 1, wherein at least one of the pair of rollers includes a core material and is coated with or includes a surface treatment of a material that is softer than the core material. 4. The aerosol creation system of claim 1, wherein the fluid source includes at least one of a slot bead coating, a slot curtain coating, a multi-layer slot bead coating, a slide bead coating, and a slide curtain coating. 5. The aerosol creation system of claim 1, further comprising a vacuum source that applies a vacuum near the downstream side of the nip to encourage the plurality of droplets to be moved away from the downstream side of the nip. 6. The aerosol creation system of claim 1, further comprising an air flow source that provides air near the downstream side of the nip to encourage the plurality of droplets to move away from the downstream side of the nip. 7. The aerosol creation system of claim 1, further comprising an electric field that is applied near the downstream side of the nip to encourage the plurality of droplets to move away from the downstream side of the nip. 8. The aerosol creation system of claim 1, further comprising a gas source that causes gas to be run through each of the rollers and expelled radially from the rollers. 9. The aerosol creation system of claim 8, wherein the expelled gas directs the plurality of droplets in a direction. 10. The aerosol creation system of claim 1, wherein at least one of the rollers includes a textured surface. 11. The aerosol creation system of claim 10, wherein the one or more surfaces is configured based on one or more characteristics of the fluid. 12. The aerosol creation system of claim 10, wherein the one or more surfaces is configured to vary the thickness of the fluid coating. 13. The aerosol creation system of claim 10, wherein the textured surface includes one or more holes that are structured to control the manner in which the fluid filament is formed. 14. The aerosol creation system of claim 1, wherein both of the pair of rollers include a textured surface. 15. The aerosol creation system of claim 1, wherein at least one of the rollers is treated with a surface treatment material that is configured to alter the angle at which the fluid coating contacts the roller. 16. The aerosol creation system of claim 1, further comprising a metering blade that contacts or nearly contacts one of the pair of rollers, the metering blade structured to control the thickness of the fluid coating on the one of the pair of rollers. 17. The aerosol creation system of claim 1, further comprising a harvesting element positioned to collect the plurality of droplets.

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