[특허]Method and apparatus for atomizing liquids having minimal droplet size

[미국특허] Method and apparatus for atomizing liquids having minimal droplet size 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B05B-001/08
출원번호	US-0107274 (2002-03-27)
발명자 / 주소	Varanasi, Padma P. Bronson, David C. Daley, Guy D.
출원인 / 주소	S. C. Johnson & Son, Inc.
인용정보	피인용 횟수 : 23 인용 특허 : 13

초록 ▼

An orifice plate is vibrated up and down at high frequency while liquid is delivered to its lower surface so that the liquid is ejected up from the plate in the form of very small diameter droplets. The upper surface of the plate is constructed to resist wetting and buildup of a liquid film thereby to form smaller diameter liquid droplets which are ejected to greater heights. The upper surface of the plate may be treated with a surfactant such as a flurosurfactant.

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1. A method of generating droplets of minimal diameter comprising the steps of:providing a reservoir containing a liquid to be atomized;providing a vibratory atomization plate having multiple orifices formed therethrough wherein the liquid is ejected as droplets through the orifices;providing a liquid delivery system including one of a wick and a capillary tube for transporting the liquid to be atomized from the reservoir to the vibratory atomization plate; andtreating a surface of said plate from which droplets of the liquid are ejected during atomization with at least one of a surfactant and a chemical containing a fluorinated group, to minimize liquid accumulation on the surface,wherein the liquid is supplied to said plate while vibrating said plate to atomize the liquid. 2. A method according to claim 1, wherein said atomization plate is an orifice plate. 3. A method according to claim 2, wherein the orifices are between 3 and 10 microns at the upper surface of the plate. 4. A method according to claim 3, wherein the orifice plate is made of metal. 5. A method according to claim 1, wherein the surface of the plate is treated with a surfactant. 6. A method according to claim 5, wherein the surfactant is a fluorosurfactant. 7. A method according to claim 1, wherein the surface of the plate is treated with a chemical which contains a fluorinated group. 8. A method according to claim 7 wherein the fluorinated group is selected from the group consisting of polymers, surfactants, and silanes. 9. A method according to claim 1, wherein the plate is vibrated at a frequency in the range of 120 to 100 kilohertz. 10. An atomization device for converting a liquid into droplets of minimum diameter, said device comprising:a reservoir containing a liquid to be atomized;an atomization plate coupled to an actuator to be vibrated thereby, said plate having (i) multiple orifices formed therethrough through which the liquid is ejected as droplets and (ii) a surface from which the droplets are ejected, said surface having been treated with at least one of a surfactant and a chemical containing a fluorinated group to minimize accumulation of liquid thereon; anda liquid supply system, including one of a wick and a capillary tube for transporting the liquid to said atomization plate during vibration thereof. 11. An atomization device according to claim 10, wherein said atomization plate is an orifice plate. 12. An atomization device according to claim 11, wherein said liquid supply system supplies liquid to a surface of said plate opposite to that from which liquid droplets are ejected. 13. An atomization device according to claim 11, wherein the orifices are between 3 and 10 microns the upper surface of the orifice plate. 14. An atomization device according to claim 13, wherein said orifice plate is made of metal. 15. An atomization device according to claim 10, wherein said surface of said plate is treated with a surfactant. 16. An atomization device according to claim 15, wherein said surfactant is a flurosurfactant. 17. An atomization device according to claim 10, wherein said surface of said plate has been treated with a chemical which contains a fluorinated group. 18. An atomization device according to claim 17, wherein said fluorinated group is selected from the group consisting of polymers, surfactants and silanes. 19. An atomization device according to claim 10, wherein said plate is vibrated at a frequency in the range of 120 to 160 kilohertz.

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[미국특허] Method and apparatus for atomizing liquids having minimal droplet size 원문보기

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이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

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[미국특허] Method and apparatus for atomizing liquids having minimal droplet size 원문보기

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이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

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