EP0771483A1 - Generateur d'ions positifs ou negatifs en milieu gazeux a surconfinement de plasma - Google Patents
Generateur d'ions positifs ou negatifs en milieu gazeux a surconfinement de plasmaInfo
- Publication number
- EP0771483A1 EP0771483A1 EP95926407A EP95926407A EP0771483A1 EP 0771483 A1 EP0771483 A1 EP 0771483A1 EP 95926407 A EP95926407 A EP 95926407A EP 95926407 A EP95926407 A EP 95926407A EP 0771483 A1 EP0771483 A1 EP 0771483A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- needle
- sheath
- generator according
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
Definitions
- the present invention relates to electronic devices of the "negative or positive ion generator” type. These devices make it possible to maintain inside an enclosure or a local an ion density (for example of negative oxygen ions 0 2 in the air) of homogeneous or localized distribution, permanent or temporary, previously determined and also high than necessary, in the absence of any production of aggressive or toxic compounds (Ozone 0 3 and / or nitrogen oxides NO ⁇ among others).
- Known devices of this kind are based on the "crown" effect (or "tip” effect). Brought for example to a voltage of -6 to -12 kV, a metallic tip then emits a rapidly increasing electron flow (exponentially) with the applied voltage.
- the known faults of these devices inherent in their emissive structure, however severely limit their performance, and more particularly the advantage and the possibilities of applications. In particular, the rudimentary emission configuration generally adopted has the following inevitable consequences:
- the subject of the invention is a generator of positive or negative ions in a gaseous medium, comprising an electronic optic consisting of at least one needle or emissive point arranged in a system of support and acceleration plates, focusing and diffusion of ions comprising a first conductive plate to which the non-emissive end of the needle is fixed, a second conductive plate traversed by said needle and provided, on its face facing said first conductive plate, with an insulating plate , said first and second conductive plates being connected to a suitable high-voltage electrical source and an insulating plate arranged at the height of the emissive end of the needle and ensuring the diffusion of the electrons emitted by the needle, characterized in that the needle has a coaxial sheath made of a dielectric material with high resistivity, low loss and high relative permittivity , in that the part of said
- the generator of the invention is therefore generally characterized by a complete "cladding" of each of the emitting needles, extended by an adaptive emission structure, assembly consisting of a dielectric with high resistivity and low losses, of relative permittivity high, associated with a reorganization of the elements of electronic optics.
- This cladding, this adaptive structure and the reorganization of the electronic otic then ensure the multiple advantages which follow, making it possible in particular: to minimize the diameter of the openings of the field plate, - to thereby ensure the maximum possible "drawdown" of the zero equipotential (by effect of the configuration of the electric field in the dielectric), to ensure a unique relationship between the parameters chosen and the value fixed to the electric field at the end of the needles,
- the device according to the invention thus ensures the production, emission and quasi-isotropic diffusion of an intense flow of charges of one and / or the other sign, without emission of toxic compounds, under a voltage of value moderate, without unnecessary expenditure of energy.
- Such features are absent in whole or in part from all the other emissive point devices currently used.
- FIG. 1 shows the diagram (in principle) of elements of the new electronic optics, with the distribution of the equipotentials and of the emitted ion flux;
- Figure 2 shows the diagram (block diagram) of the entire device in the form of the specific functions exercised by each of its parts.
- the assembly of the device according to the invention comprises two sub-assemblies:
- section I a sub-assembly constituted by the electronic optical system, described above, according to FIG. 1.
- a sub-assembly consisting of a power supply unit (Al) delivering between .the output (S) and the common ground (M) a high voltage (-THT) of the order of 4 to 5 kV under an impedance of the order of a hundred Mohms, intended to supply said electronic optics with the high voltage necessary for ionic production.
- the "electronic optical" part of the device is thus constituted: - a plate (P) made of insulating material, with a thickness of the order of 1 mm, canceling out any electronic emission ( effluvage) towards the rear of the device inside the housing;
- the "leakage" resistance (R f ) symbolizes the real resistance of the plate (P 5 ) responsible for draining the charges (I f ) taken from the local space charge resulting from the electronic emission of the tips.
- Said plate (Pg) is pierced with circular openings (Open) provided with a chamfer (Ch) with an angular opening of the order of 60 °, hollowed out over its entire thickness, so that its underside fits exactly on the open end of the cone (C d ) carried by the internal plate (P ⁇ _), the wall of the chamfer (Ch) lying in the extension of the conical surface of the distal structure (C d ).
- FIG. 2 represents a possible exemplary embodiment of the electronic optical system intended for the production and the emission towards the atmosphere of the ionic flux emitted by the "tips".
- a set of needles is fixed to the conductive plate (P 2 ), subjected by the aforementioned power supply (Al) to a negative voltage (case of the production of ions
- the conductive field plate (P 5 ) carried by the insulating plate (P 4 ) is connected to ground (zero potential).
- the emissive needles are sheathed with dielectric. It follows that the zero equipotential is imposed by the field plate (P 5 ), its distribution then depending on the position and the length of the needles as well as the characteristics of the dielectric sheath and its distal cone (C d ) . In fact, because of the high relative permittivity of the sheath and of its distal cone, the "drawdown" of the zero equipotential is practically done on the external surface of said sheath and ensures the presence of an electric field of maximum value. very high at the free end of the needle, a prerequisite for the most intense primary electronic emission possible.
- the plate (Pg) constituting the device housing has a low but not zero conductivity. This characteristic greatly reduces the capture of the charges emitted, while ensuring their evacuation to the common ground. The optimum dynamic balance between capture and evacuation then results from the choice of the value of said conductivity and the characteristics of the adaptive structure.
- the surface charge acquired by the cone distal (C d ) exerts a strongly repulsive effect on the local space charge, ensuring the emission towards the outside of the maximum ion flux of which only a very small part is captured by the housing.
- the measurement of said "capture current" on the aforementioned experimental model confirms the accuracy of the approach and the effectiveness of the device.
- Such an exemplary embodiment does not exhaust the invention, the various constituent elements of which can be produced, as required, in several parts of suitable dimensions and materials, assembled in the final device, or produced in whole or in part in the form of molded parts having the characteristics and functions of the aforementioned parts, in the functional form of a "unitary electronic optics module".
- the assembly of a determined number of such "unit modules" by simple juxtaposition or by an overall molding makes it possible to have a "composite electronic sheet optic" adapted to previously defined needs.
- Another example of application relates to places subject to strong influences from existing static charges or created by certain devices: this is among others the case of computer rooms in general, places of manipulation or processing of photographic films as well as sensitive electronic components.
- the injection of a sufficient permanent flow of negative charges makes it possible to almost completely eliminate the nuisances observed, without prejudice to those present and sensitive equipment.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9409247 | 1994-07-20 | ||
FR9409247A FR2722923A1 (fr) | 1994-07-20 | 1994-07-20 | Generateur d'ions negatifs ou positifs en milieu gazeux, a surconfinement de plasma |
PCT/FR1995/000978 WO1996002966A1 (fr) | 1994-07-20 | 1995-07-20 | Generateur d'ions positifs ou negatifs en milieu gazeux a surconfinement de plasma |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0771483A1 true EP0771483A1 (fr) | 1997-05-07 |
EP0771483B1 EP0771483B1 (fr) | 1998-12-16 |
Family
ID=9465759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95926407A Expired - Lifetime EP0771483B1 (fr) | 1994-07-20 | 1995-07-20 | Generateur d'ions positifs ou negatifs en milieu gazeux a surconfinement de plasma |
Country Status (12)
Country | Link |
---|---|
US (1) | US5789749A (fr) |
EP (1) | EP0771483B1 (fr) |
JP (1) | JPH10503048A (fr) |
AT (1) | ATE174729T1 (fr) |
AU (1) | AU3081195A (fr) |
BR (1) | BR9508416A (fr) |
CA (1) | CA2195343A1 (fr) |
DE (1) | DE69506712T2 (fr) |
ES (1) | ES2128068T3 (fr) |
FR (1) | FR2722923A1 (fr) |
GR (1) | GR3029664T3 (fr) |
WO (1) | WO1996002966A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19745316C2 (de) * | 1997-10-14 | 2000-11-16 | Thomas Sebald | Vorrichtung zur Erzeugung von Hochspannung für die Ionisation von Gasen |
FR2794295B1 (fr) * | 1999-05-31 | 2001-09-07 | Joel Mercier | Dispositif generateur d'ions |
JP4903942B2 (ja) * | 2001-03-15 | 2012-03-28 | 株式会社キーエンス | イオン発生装置 |
US20050031503A1 (en) * | 2003-08-05 | 2005-02-10 | Fox Michael T. | Air ionization control |
JP4868066B2 (ja) * | 2007-11-30 | 2012-02-01 | 株式会社村田製作所 | イオン発生器 |
FR3044834A1 (fr) | 2015-12-02 | 2017-06-09 | Pierre Guitton | Dispositif de generation d'ions |
CN107154583B (zh) * | 2017-06-06 | 2018-10-30 | 臻烯智创科技(深圳)有限公司 | 负离子发射电极及其制备方法和应用 |
CN113474957A (zh) | 2019-01-11 | 2021-10-01 | 得康氧公司 | 改进型电离粒子发生装置 |
WO2020170096A1 (fr) | 2019-02-18 | 2020-08-27 | Omayur Technologies Private Limited | Dispositif d'impact d'atmosphère par des électrons |
DE102022103550B4 (de) * | 2022-02-15 | 2024-01-04 | Woco Gmbh & Co. Kg | Ansteuerschaltung für einen Elektroabscheider |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3711710A (en) * | 1969-11-07 | 1973-01-16 | Australia Res Lab | Method of and means for controlling corona emission |
US4227235A (en) * | 1978-04-03 | 1980-10-07 | Peter Bishop | Static neutralizer |
DE3148380C2 (de) * | 1981-12-07 | 1986-09-04 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Ionengenerator zur Erzeugung einer Luftströmung |
FR2687858B1 (fr) * | 1992-01-17 | 1996-11-08 | Breton Dominique | Generateur d'ions negatifs a haute tension controlee, sans emission d'ozone, pour milieux habites critiques. |
-
1994
- 1994-07-20 FR FR9409247A patent/FR2722923A1/fr active Granted
-
1995
- 1995-07-20 DE DE69506712T patent/DE69506712T2/de not_active Expired - Fee Related
- 1995-07-20 CA CA002195343A patent/CA2195343A1/fr not_active Abandoned
- 1995-07-20 EP EP95926407A patent/EP0771483B1/fr not_active Expired - Lifetime
- 1995-07-20 US US08/765,825 patent/US5789749A/en not_active Expired - Fee Related
- 1995-07-20 JP JP8504770A patent/JPH10503048A/ja active Pending
- 1995-07-20 AT AT95926407T patent/ATE174729T1/de not_active IP Right Cessation
- 1995-07-20 BR BR9508416A patent/BR9508416A/pt not_active IP Right Cessation
- 1995-07-20 AU AU30811/95A patent/AU3081195A/en not_active Abandoned
- 1995-07-20 WO PCT/FR1995/000978 patent/WO1996002966A1/fr active IP Right Grant
- 1995-07-20 ES ES95926407T patent/ES2128068T3/es not_active Expired - Lifetime
-
1999
- 1999-03-12 GR GR990400748T patent/GR3029664T3/el unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9602966A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH10503048A (ja) | 1998-03-17 |
BR9508416A (pt) | 1997-11-18 |
DE69506712D1 (de) | 1999-01-28 |
AU3081195A (en) | 1996-02-16 |
FR2722923B1 (fr) | 1997-02-07 |
DE69506712T2 (de) | 1999-07-22 |
EP0771483B1 (fr) | 1998-12-16 |
ES2128068T3 (es) | 1999-05-01 |
FR2722923A1 (fr) | 1996-01-26 |
GR3029664T3 (en) | 1999-06-30 |
US5789749A (en) | 1998-08-04 |
CA2195343A1 (fr) | 1996-02-01 |
ATE174729T1 (de) | 1999-01-15 |
WO1996002966A1 (fr) | 1996-02-01 |
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