[특허]Two-stage electrostatic filter

[미국특허] Two-stage electrostatic filter 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B03C-003/08
출원번호	US-0870994 (1997-06-06)
우선권정보	SE-0000515 (1992-02-20)
발명자 / 주소	Loreth Andrzej,SEX Torok Vilmos,SEX
출원인 / 주소	TL-Vent AB, SEX
대리인 / 주소	Browdy and Neimark
인용정보	피인용 횟수 : 82 인용 특허 : 2

초록 ▼

A two-stage electrostatic filter includes an ionization section which is arranged in an upstream part of a throughflow passage (28) and includes a wire-like corona electrode (31) which is disposed in an ionization chamber (29) and connected to one pole of an electric high voltage source (16). The filter further includes a target electrode (21;37) which is spaced from the corona electrode (31) and connected to another pole of the high voltage source. A capacitator separator (30) is located in a downstream part of the throughflow passage (28) and includes a first and second group of electrode elements (32,33) which are placed side-by-side in spaced-apart relationship. The electrode elements (32) of the first group are placed alternately with the electrode elements (33) of the second group and are adapted to lie on a potential which is different from the potential on which the electrode elements (33) of the second group lie. The ionization chamber (29) has a target electrode surface (37;21) which is disposed both upstream and downstream of the corona electrode (31). When measured perpendicularly to the upstream-downstream direction of the throughflow passage (28) and to the longitudinal axis of the corona electrode, the distance of the corona electrode (31) from the target electrode surface is at least four times the distance between neighboring electrode elements (32,33). The capacitator separator (30) and the ionization chamber (29) form a disposable unit made of a non-metallic material, preferably a cellulose fibre material.

대표청구항 ▼

[ We claim:] [1.] A two-stage electrostatic filter comprising an ionization section which is disposed in an upstream part of a throughflow passage and includes an ionization chamber in which there is mounted at least one elongated wire corona electrode which is connected to one pole of the electrical high voltage source, and a target electrode which is spaced from the corona electrode and connected to another pole of the high voltage source,a capacitor separator which is located in a downstream part of the throughflow passage and includes a first group and a second group of electrode elements which are arranged side-by-side in spaced-apart relationship, the electrode elements of the first group being disposed alternatively with the electrode elements of said second group and are on a different potential than the electrode elements of said second group,wherein,the electrode elements (32, 33; 132, 133) comprise an antistatic material having a surface resistivity of 10.sub.9 -10.sub.15 ohms,the ionization chamber (29, 129) includes a target electrode surface (37, 137; 21, 121; 132, 133) which is disposed both upstream and downstream of the corona electrode (31, 131); a distance of the corona electrode (31, 131) from the target electrode surface, when measured perpendicularly to the upstream and downstream direction of the throughflow passage (28, 128) and the longitudinal direction of the corona electrode being not less than about 4 cm and at least four times the distance between neighbouring electrode elements (32, 33; 132, 133).

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[미국특허] Two-stage electrostatic filter 원문보기

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