US1961878A - Removal of tobacco smoke from air - Google Patents
Removal of tobacco smoke from air Download PDFInfo
- Publication number
- US1961878A US1961878A US592201A US59220132A US1961878A US 1961878 A US1961878 A US 1961878A US 592201 A US592201 A US 592201A US 59220132 A US59220132 A US 59220132A US 1961878 A US1961878 A US 1961878A
- Authority
- US
- United States
- Prior art keywords
- air
- tobacco smoke
- ozone
- ozonizer
- removal
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S261/00—Gas and liquid contact apparatus
- Y10S261/42—Ozonizers
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Treating Waste Gases (AREA)
- Separation Of Gases By Adsorption (AREA)
Description
June 5, 1934. w. K. GILKEY 1,961,378
REMOVAL OF TOBACCO SMOKE FROM AIR Filed Feb. 10. 1952 Far/f/ea 20 A I 19 1 fa/a/ys a Fade 1/00 12 6/10/21 her 16 Fan sformer 18 i 0 [/0 are Patented June 5, 1934 warren STATES REMOVAL OF TOBACCO SMOKE FROM AIR William K. Gilkey, Dayton, Ohio, assignor to Frigidaire Corporation, Dayton, Ohio, a corpo ration of Delaware Application February 10, 1932, Serial No. 592,201
4 Claims. (01. 23-4) This invention relates to chemistry and more particularly to the purification of air containing tobacco smoke and the like.
In places where large numbers of people congregate and smoke tobacco it has been a difficult problem to provide proper atmospheric conditions Without the necessity of introducing an excessive amount of fresh air. It is an object of this invention to provide a method or mechanism capable of purifying the air laden with tobacco smoke in such places in a manner that an undue introduction of fresh air is not necessary.
Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawing, wherein a preferred form of the present invention is clearly shown.
In the drawing:
Fig. 1 shows diagrammatically a complete apt paratus embodying this invention; and
Fig. 2 shows diagrammatically a connection between the ozonizer and the transformer.
In practicing this invention preferably the air is circulated through a treating device, the air being withdrawn from and discharged to the space to be purified. The air passing through this device is subjected to the action of an ozonizer, thereafter passes through a, small reaction chamber and then through or in contact with W a catalyst of sufficient capacity to change all of the ozone in the air to oxygen. Heretofore attempts have been made to purify air by means of ozonizers. However, the method was to discharge ozone directly into the room to produce therein a low concentration of ozone (in the order of .01 part per million). My method differs from this in that the air is segregated in a localized zone, and there subjected to the action of a high concentration of ozone. Thereafter ozone not used in oxidizing the odoriferous compounds is removed by the action of a catalyst before discharging the segregated air back into the room.
Such an apparatus, of sufficient capacity for the load imposed upon it, has been found to free the air of tobacco smoke and odors very successfully. Tobacco smoke consists of very small particles, believed to be about 000001 inch in size. These particles are believed to consist of a nucleus of carbon or ash upon which is condensed tar, water, acids, etc. The more volatile compounds of these particles evaporate first and provide the pleasant odors of tobacco smoke, whereas the less volatile compounds are the last to evaporate and produce the stale and offensive odors so prevalent in a room after smoking has been going on for sometime. A portion of these small particles are temporarily precipitated in the ozonizer, forming a tarry coat on the surfaces of the ozonizer. This tarry coat is continually being vaporized, the vapors passing on with the air to the. reaction chamber and thence to the catalyst. The odoriferous substances are oxidized both in the ozonizer and the reaction chamber and changed into unoffensive compounds. The air from the reaction chamber then comes in contact with the catalyzer where the excess ozone is changed back to oxygen, so that when the treated air is discharged back into the room, it carries neither the offensive tobacco odors nor offensive ozone odors.
A unit which has been found to be of a capacity sufficient to clean up an ordinary ofiice room within a half hour is shown in the drawing. In the drawing, a fan 10 is driven by a suitable electric motor and is of sufilcient capacity to circulate approximately 300 cu. ft. per minute through the apparatus. The air enters the apparatus at the air inlet 9, enters the fan 10 and is forced through an ozonizer 11. The air discharged from the ozonizer 11 then passes through a reaction chamber 12 from which it discharges through a bed of catalyst 13 and is discharged back into the room at the top of the apparatus. The ozonizer is of a capacity and construction capable of precipitating tobacco smoke and at the same time producing large quantities of ozone. To this end it is made of a series of spaced glass plates 14 each having on one side attached aluminum foil layers 15 in such a manner as to provide ten air passages each measuring about 12 x 12 x 0.3 inches having glass on one side and aluminum foil on the other. These air passages are open at one end to the discharge from the fan and on the other end to the reaction chamber 12. The power for this ozonizer is furnished by a transformer rated at 450 milli-amperes and 15,000 volts. A suitable transformer is of the type now commercially used for neon signs. The ozonizer is connected to the transformer as shown in Fig. 2, each alternate aluminum foil 15 being connected to one terminal 16 of the transformer 17 and the other alternate aluminum foil 15 being connected to the remaining terminal 18 of the transformer 17.
The reaction chamber 12 may be of any suitable size to permit reaction between the ozone and particles or vapors. I have found that a chamber of approximately 1 cu. ft. is of sufficient capacity to provide the necessary reaction. The bed of catalyst 13 preferably is made by enclosing activated charcoal 19 between the brass gauze screens 20. The bed is approximately 24x24x inches in dimensions. Activated charcoal of the commercial type now on sale may be used, preferably being of the type produced from cocoanut shells and known in the trade as commercial adsorbent charcoal. Preferably it should have a capacity substantially the same as that known as gas mask activated charcoal. A suitable charcoal is 6-8 mesh inch charcoal manufactured by the Barnebey- Chaney Company of Columbus, Ohio. Suitable methods of activation for charcoal are now well known. One such method, which is satisfactory, is to subject the cocoanut shell charcoal to the action of superheated steam in accordance with the methods described by Oscar L. Barnebey. The brass gauze 20 may be of any suitable mesh sufllcient to hold the charcoal, and a mesh of 100 per square inch has been found satisfactory.
An apparatus built in accordance with the above dimensions has been found very satisfactory in maintaining an ordinary room substantially free from an offensive amount of tobacco smoke when occupied by a normal number of smokers.
While the form of embodiment of the invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.
What is claimed is as follows:
1. The method of purifying air laden with tobacco smoke which comprises subjecting the air to the action of ozone and thereafter to the action of a catalyst capable of restoring the ozone to oxygen.
2. The method of purifying air laden with tobacco smoke which comprises passing the air through an ozonizer and then in contact with a catalyst capable of restoring the ozone to oxygen.
3. The method of purifying air laden with tobacco smoke which comprises subjecting the air to the action of ozone and thereafter to the action of activated charcoal capable of restoring the ozone to oxygen.
4. The method of purifying air laden with tobacco smoke which comprises passing the air through an ozonizer and then in contact with activated charcoal capable of restoring the ozone to oxygen.
WILLIAM K. GILKEY.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US592201A US1961878A (en) | 1932-02-10 | 1932-02-10 | Removal of tobacco smoke from air |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US592201A US1961878A (en) | 1932-02-10 | 1932-02-10 | Removal of tobacco smoke from air |
Publications (1)
Publication Number | Publication Date |
---|---|
US1961878A true US1961878A (en) | 1934-06-05 |
Family
ID=24369722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US592201A Expired - Lifetime US1961878A (en) | 1932-02-10 | 1932-02-10 | Removal of tobacco smoke from air |
Country Status (1)
Country | Link |
---|---|
US (1) | US1961878A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2809881A (en) * | 1954-12-20 | 1957-10-15 | Welsbach Corp | Processes for the catalytic purification of oxygen employing o3 |
US2918355A (en) * | 1955-07-14 | 1959-12-22 | Pan American Petroleum Corp | Method for determining gas-catalyst contacting efficiency |
US2953435A (en) * | 1958-12-12 | 1960-09-20 | Pure Oil Co | Method of preparing cyanogen |
US3269801A (en) * | 1961-10-20 | 1966-08-30 | Lockheed Aircraft Corp | Systems for removing ozone |
US3516783A (en) * | 1965-03-12 | 1970-06-23 | Gen Eaux Cie | Process for removing ozone from ozone-loaded air |
JPS49108845U (en) * | 1973-01-13 | 1974-09-18 | ||
US3933980A (en) * | 1974-12-19 | 1976-01-20 | Stauffer Chemical Company | Process for removing ethylenically unsaturated chlorinated hydrocarbons from gas streams |
US3949056A (en) * | 1974-06-10 | 1976-04-06 | Nakshbendi Ghassan F | Method for treating air containing odoriferous substances |
US4256710A (en) * | 1978-11-01 | 1981-03-17 | Mitsubishi Denki Kabushiki Kaisha | Process for deodorization |
US4343776A (en) * | 1980-12-22 | 1982-08-10 | Engelhard Corporation | Ozone abatement catalyst having improved durability and low temperature performance |
US4343765A (en) * | 1980-12-11 | 1982-08-10 | Georgia Tech Research Institute | Method for deodorizing and disinfecting air |
JPS63143348U (en) * | 1987-03-13 | 1988-09-21 | ||
US4904289A (en) * | 1987-03-13 | 1990-02-27 | Sharp Kabushki Kaisha | Deodorizing apparatus |
US5454968A (en) * | 1990-11-08 | 1995-10-03 | United Technologies Corporation | Flat sheet CO2 sorbent |
DE4424834A1 (en) * | 1994-07-14 | 1996-01-18 | Manfred H Langner | Air steriliser suitable for use in food industry, air conditioning and individual rooms, |
ES2253988A1 (en) * | 2004-06-18 | 2006-06-01 | Sistemas De Proteccion Del Medio Ambiente, S.L. | Ozone generation based cleaner for contaminated air has a secondary air input and an output air turbine |
US20070212253A1 (en) * | 2004-12-21 | 2007-09-13 | Elrod Scott A | Descenting systems and methods |
US20100071633A1 (en) * | 2004-12-21 | 2010-03-25 | Ozonics, LLC | Descenting Systems And Methods |
US20100107991A1 (en) * | 2004-12-21 | 2010-05-06 | Elrod Scott A | Systems and methods for detecting descented material |
US20100289655A1 (en) * | 2004-12-21 | 2010-11-18 | Elrod Scott A | Detecting descented material |
US7939015B1 (en) | 2004-12-21 | 2011-05-10 | Parah, Llc | Method of descenting hunter's clothing |
US8257648B2 (en) | 2004-12-21 | 2012-09-04 | Scott Elrod | System and method for reducing odors in a blind |
-
1932
- 1932-02-10 US US592201A patent/US1961878A/en not_active Expired - Lifetime
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2809881A (en) * | 1954-12-20 | 1957-10-15 | Welsbach Corp | Processes for the catalytic purification of oxygen employing o3 |
US2918355A (en) * | 1955-07-14 | 1959-12-22 | Pan American Petroleum Corp | Method for determining gas-catalyst contacting efficiency |
US2953435A (en) * | 1958-12-12 | 1960-09-20 | Pure Oil Co | Method of preparing cyanogen |
US3269801A (en) * | 1961-10-20 | 1966-08-30 | Lockheed Aircraft Corp | Systems for removing ozone |
US3516783A (en) * | 1965-03-12 | 1970-06-23 | Gen Eaux Cie | Process for removing ozone from ozone-loaded air |
JPS49108845U (en) * | 1973-01-13 | 1974-09-18 | ||
US3949056A (en) * | 1974-06-10 | 1976-04-06 | Nakshbendi Ghassan F | Method for treating air containing odoriferous substances |
US3933980A (en) * | 1974-12-19 | 1976-01-20 | Stauffer Chemical Company | Process for removing ethylenically unsaturated chlorinated hydrocarbons from gas streams |
US4256710A (en) * | 1978-11-01 | 1981-03-17 | Mitsubishi Denki Kabushiki Kaisha | Process for deodorization |
US4343765A (en) * | 1980-12-11 | 1982-08-10 | Georgia Tech Research Institute | Method for deodorizing and disinfecting air |
US4343776A (en) * | 1980-12-22 | 1982-08-10 | Engelhard Corporation | Ozone abatement catalyst having improved durability and low temperature performance |
JPS63143348U (en) * | 1987-03-13 | 1988-09-21 | ||
US4904289A (en) * | 1987-03-13 | 1990-02-27 | Sharp Kabushki Kaisha | Deodorizing apparatus |
JPH0417152Y2 (en) * | 1987-03-13 | 1992-04-16 | ||
US5681503A (en) * | 1990-11-08 | 1997-10-28 | United Technologies Corporation | Flat sheet CO2 sorbent |
US5454968A (en) * | 1990-11-08 | 1995-10-03 | United Technologies Corporation | Flat sheet CO2 sorbent |
DE4424834A1 (en) * | 1994-07-14 | 1996-01-18 | Manfred H Langner | Air steriliser suitable for use in food industry, air conditioning and individual rooms, |
ES2253988A1 (en) * | 2004-06-18 | 2006-06-01 | Sistemas De Proteccion Del Medio Ambiente, S.L. | Ozone generation based cleaner for contaminated air has a secondary air input and an output air turbine |
US7939015B1 (en) | 2004-12-21 | 2011-05-10 | Parah, Llc | Method of descenting hunter's clothing |
US8066939B2 (en) | 2004-12-21 | 2011-11-29 | Parah, Llc | Descenting methods |
US20100107991A1 (en) * | 2004-12-21 | 2010-05-06 | Elrod Scott A | Systems and methods for detecting descented material |
US20100226819A1 (en) * | 2004-12-21 | 2010-09-09 | Elrod Scott A | Descenting systems and methods |
US20100289655A1 (en) * | 2004-12-21 | 2010-11-18 | Elrod Scott A | Detecting descented material |
US20070212253A1 (en) * | 2004-12-21 | 2007-09-13 | Elrod Scott A | Descenting systems and methods |
US10752501B2 (en) | 2004-12-21 | 2020-08-25 | Parah, Llc | Scent elimination device for hunters in the field |
US20100071633A1 (en) * | 2004-12-21 | 2010-03-25 | Ozonics, LLC | Descenting Systems And Methods |
US8187533B2 (en) | 2004-12-21 | 2012-05-29 | Parah, Llc | Descenting systems and methods |
US8257648B2 (en) | 2004-12-21 | 2012-09-04 | Scott Elrod | System and method for reducing odors in a blind |
US8329096B2 (en) | 2004-12-21 | 2012-12-11 | Parah, Llc | Systems and methods for detecting descented material |
US8404180B1 (en) | 2004-12-21 | 2013-03-26 | Parah, Llc | Method of descenting hunter's clothing |
US8557177B1 (en) | 2004-12-21 | 2013-10-15 | Parah, Llc | Method of descenting hunter's clothing |
US8663553B2 (en) | 2004-12-21 | 2014-03-04 | Scott Elrod | System and method for reducing odors in a blind |
US9759701B2 (en) | 2004-12-21 | 2017-09-12 | Parah, Llc | Systems and methods for detecting descented material |
WO2011144948A2 (en) | 2010-05-21 | 2011-11-24 | Parah, Llc | Detecting descented material |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1961878A (en) | Removal of tobacco smoke from air | |
US3469934A (en) | Method of purifying closed atmospheres | |
US3807148A (en) | Air purifying device for use with an ash tray | |
US2203188A (en) | Treatment of air | |
JPS6240285B2 (en) | ||
US2248713A (en) | Means for air conditioning | |
JP3129910B2 (en) | Comfortable air generator and comfortable housing using it | |
US2116480A (en) | Method and apparatus for conditioning air | |
HU201138B (en) | Device for filtering the respiratory air with chemisorption filter | |
EA004732B1 (en) | Device for regenerating air in enclosed space | |
JPH06142170A (en) | Interior air cleaner using gaseous hydroxyl ion | |
JPS5910925B2 (en) | Oxygen recycling ozone generator | |
JPS62163726A (en) | Simple deodorizer | |
FR2285167A1 (en) | Purifying air contg. low impurity concns. - using an adsorbent strip contg. activated carbon fibres | |
DE2610227A1 (en) | METHOD AND DEVICE FOR GENERATING AND RECOVERING OZONE | |
JPS5851881B2 (en) | Oxygen recycling ozone generation method and generator | |
JPS62183838A (en) | Air purifier | |
JP2670972B2 (en) | How to remove trace acetaldehyde from air | |
JP2888565B2 (en) | Deodorizing method and deodorizing device | |
JPS59189856A (en) | Air purifying and sterilizing method | |
US3403688A (en) | Treating of tobacco leaves | |
JP2002011087A (en) | Air purifying device | |
JPS56113327A (en) | Odorous gas treatment apparatus | |
JPS5676223A (en) | Dry type deodorizing device | |
JPH11155479A (en) | Apparatus for decomposing ethylene and preservation cabinet for vegetable and fruit using the same |