GB2093638A - Negative ion generators - Google Patents
Negative ion generators Download PDFInfo
- Publication number
- GB2093638A GB2093638A GB8101713A GB8101713A GB2093638A GB 2093638 A GB2093638 A GB 2093638A GB 8101713 A GB8101713 A GB 8101713A GB 8101713 A GB8101713 A GB 8101713A GB 2093638 A GB2093638 A GB 2093638A
- Authority
- GB
- United Kingdom
- Prior art keywords
- corona discharge
- cloth
- activated charcoal
- negative
- sites
- 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.)
- Withdrawn
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
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
In a negative ion generator of the corona discharge type, one or more sharp points of electrically conductive material are raised to a negative potential relative to earth so that corona appears at the point or points. Negative ions are thus created in the corona region and are accelerated into the surrounding air space by virtue of the electrical field set up. Some Ozone is also generated and this is undesirable. The present invention proposes the use of Activated Charcoal Cloth material as the corona discharge site or sites. By the judicious forming of the said cloth 1 the fibres of the cloth form the sharply pointed corona discharge points. It has been found that less Ozone is generated when using the Activated Charcoal as corona discharge sites than that generated when using the usual metallic needle points. <IMAGE>
Description
SPECIFICATION
Improvements to negative ion generators
This invention relates to Negative lon Generators of the corona discharge type. To one aquainted with the art such a device comprises essentially a high voltage D.C. generating circuit the negative polarity of which with respect to ground potential is connected throught current limiting resistors to one or more corona discharge elements. Negative ions are produced at sites on the corona discharge elements the said ions being projected into the surrounding air by virture of the high electrical field existing in the region of the corona discharge. Ozone and certain
Oxides of Nitrogen are also produced by the corona discharge action in air and the creation of these gases is undesirable.Negative lon
Generators of the corona discharge type generally employ sharpiy pointed metallic needles as corona discharge elements.
This invention consists in making the corona discharge elements of Activated Charcoal material arranged so that corona discharge actually takes place on the said Activated
Charcoal material. Activated Charcoal exhibits adsorption properties to Ozone and certain
Oxides of Nitrogen. When corona discharge occurs on this material there is a reduction in the amounts of Ozone and Oxides of Nitrogen liberated compared to the liberated using sharply pointed metallic needles as corona discharge elements.The Activated Charcoal material proposed for use in this invention is a woven Activated Charcoal cloth. Filaments forming the threads of this material are typically of about 1 3 micrometres in diameter.
The said cloth is electrically conductive. It will be apparent from later description that random filaments protruding from the edge or surface of a cut band of said cloth become corona discharge sites on the corona discharge element. The invention is more readily understood by reference to Figs. 1 2, and 3.
In Fig. 1. a cut band of the said Activated
Charcoal Cloth 1. is wrapped concentrically around a support member 2. The support member may be of metal or of insulating material. One edge of the wrapped cloth is extended beyond the end of the support member the other end of which may be threaded for mounting purposes. The whole assembly is held together by one or more sleeves 3.The sleeve or sleeves may be metallic or of insulating material such as rubber. A cross section of the arrangment is depicted in Fig. 2. Fine filaments constituting the said wrapped cloth protruding in random fashion from the cloth edges become corona discharge sites on the thus constructed corona discharge element when this is connected to a high voltage D.C.
supply of sufficient value and the said element correctly positioned on the Negative lon Generator Chassis. It is to be understood that according to the invention the support member in Fig. 1. and Fig. 2. may be of any cross sectional shape. For example it may be in part hollow or tubular.
In Fig. 3. according to the invention a corona discharge element is constructed as a band or bands of Activated Charcoal cloth 1.
held taught between support members 2.
With suitable electrical connection and positioning on the Negative ion Generator Chassis corona discharge takes place at the edge or edges of the said cloth.
The particular examples shown are understood not be restrictive in scope as Activated
Charcoal corona discharge elements.
1. A negative ion generator of the corona discharge type using Activated Charcoal Cloth material as the actual corona discharge points.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (1)
- **WARNING** start of CLMS field may overlap end of DESC **.SPECIFICATION Improvements to negative ion generators This invention relates to Negative lon Generators of the corona discharge type. To one aquainted with the art such a device comprises essentially a high voltage D.C. generating circuit the negative polarity of which with respect to ground potential is connected throught current limiting resistors to one or more corona discharge elements. Negative ions are produced at sites on the corona discharge elements the said ions being projected into the surrounding air by virture of the high electrical field existing in the region of the corona discharge. Ozone and certain Oxides of Nitrogen are also produced by the corona discharge action in air and the creation of these gases is undesirable.Negative lon Generators of the corona discharge type generally employ sharpiy pointed metallic needles as corona discharge elements.This invention consists in making the corona discharge elements of Activated Charcoal material arranged so that corona discharge actually takes place on the said Activated Charcoal material. Activated Charcoal exhibits adsorption properties to Ozone and certain Oxides of Nitrogen. When corona discharge occurs on this material there is a reduction in the amounts of Ozone and Oxides of Nitrogen liberated compared to the liberated using sharply pointed metallic needles as corona discharge elements.The Activated Charcoal material proposed for use in this invention is a woven Activated Charcoal cloth. Filaments forming the threads of this material are typically of about 1 3 micrometres in diameter.The said cloth is electrically conductive. It will be apparent from later description that random filaments protruding from the edge or surface of a cut band of said cloth become corona discharge sites on the corona discharge element. The invention is more readily understood by reference to Figs. 1 2, and 3.In Fig. 1. a cut band of the said Activated Charcoal Cloth 1. is wrapped concentrically around a support member 2. The support member may be of metal or of insulating material. One edge of the wrapped cloth is extended beyond the end of the support member the other end of which may be threaded for mounting purposes. The whole assembly is held together by one or more sleeves 3.The sleeve or sleeves may be metallic or of insulating material such as rubber. A cross section of the arrangment is depicted in Fig. 2. Fine filaments constituting the said wrapped cloth protruding in random fashion from the cloth edges become corona discharge sites on the thus constructed corona discharge element when this is connected to a high voltage D.C.supply of sufficient value and the said element correctly positioned on the Negative lon Generator Chassis. It is to be understood that according to the invention the support member in Fig. 1. and Fig. 2. may be of any cross sectional shape. For example it may be in part hollow or tubular.In Fig. 3. according to the invention a corona discharge element is constructed as a band or bands of Activated Charcoal cloth 1.held taught between support members 2.With suitable electrical connection and positioning on the Negative ion Generator Chassis corona discharge takes place at the edge or edges of the said cloth.The particular examples shown are understood not be restrictive in scope as Activated Charcoal corona discharge elements.1. A negative ion generator of the corona discharge type using Activated Charcoal Cloth material as the actual corona discharge points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8101713A GB2093638A (en) | 1981-01-21 | 1981-01-21 | Negative ion generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8101713A GB2093638A (en) | 1981-01-21 | 1981-01-21 | Negative ion generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2093638A true GB2093638A (en) | 1982-09-02 |
Family
ID=10519089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8101713A Withdrawn GB2093638A (en) | 1981-01-21 | 1981-01-21 | Negative ion generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2093638A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136215A (en) * | 1983-02-18 | 1984-09-12 | Amcor Ltd | Ionisation apparatus |
| DE3610238A1 (en) * | 1985-04-01 | 1986-10-02 | Suzhou Medical College, Suzhou | ELECTRODE FOR IONIZING AIR WITH SIMULTANEOUS DECONTINATION |
| WO1987006501A1 (en) * | 1986-04-21 | 1987-11-05 | Astra-Vent Ab | An arrangement for generating an electric corona discharge in air |
| DE102005056726A1 (en) * | 2005-11-29 | 2007-05-31 | Daniel Dehne | Purification of oxygen-containing gases contaminated with organic particulates, e.g. bacteria, pollen,or odors, comprises treatment with cold plasma of free radicals and oxidizing molecules produced by silent electric discharge |
| CN115301411A (en) * | 2022-07-20 | 2022-11-08 | 浙江菲达环保科技股份有限公司 | Self-heating ash-free discharge electrode and preparation method thereof |
| DE102021127875A1 (en) | 2021-10-26 | 2023-04-27 | Krömker Holding GmbH | Device for ionizing ambient air |
-
1981
- 1981-01-21 GB GB8101713A patent/GB2093638A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136215A (en) * | 1983-02-18 | 1984-09-12 | Amcor Ltd | Ionisation apparatus |
| DE3610238A1 (en) * | 1985-04-01 | 1986-10-02 | Suzhou Medical College, Suzhou | ELECTRODE FOR IONIZING AIR WITH SIMULTANEOUS DECONTINATION |
| US4719535A (en) * | 1985-04-01 | 1988-01-12 | Suzhou Medical College | Air-ionizing and deozonizing electrode |
| WO1987006501A1 (en) * | 1986-04-21 | 1987-11-05 | Astra-Vent Ab | An arrangement for generating an electric corona discharge in air |
| JPS63503180A (en) * | 1986-04-21 | 1988-11-17 | アストラ・ベント・アー・ベー | Arrangement for generating electric corona discharge in the air |
| DE102005056726A1 (en) * | 2005-11-29 | 2007-05-31 | Daniel Dehne | Purification of oxygen-containing gases contaminated with organic particulates, e.g. bacteria, pollen,or odors, comprises treatment with cold plasma of free radicals and oxidizing molecules produced by silent electric discharge |
| DE102005056726B4 (en) * | 2005-11-29 | 2011-09-15 | Daniel Dehne | Capacitor device and process for generating radicals and oxidants |
| DE102021127875A1 (en) | 2021-10-26 | 2023-04-27 | Krömker Holding GmbH | Device for ionizing ambient air |
| EP4175082A1 (en) | 2021-10-26 | 2023-05-03 | Krömker Holding GmbH | Device for ionizing ambient air |
| CN115301411A (en) * | 2022-07-20 | 2022-11-08 | 浙江菲达环保科技股份有限公司 | Self-heating ash-free discharge electrode and preparation method thereof |
| CN115301411B (en) * | 2022-07-20 | 2024-03-26 | 浙江菲达环保科技股份有限公司 | Self-heating non-ash-sticking discharge electrode and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |