US3674421A - Apparatus for purifying and sterilizing premises - Google Patents
Apparatus for purifying and sterilizing premises Download PDFInfo
- Publication number
- US3674421A US3674421A US886514A US3674421DA US3674421A US 3674421 A US3674421 A US 3674421A US 886514 A US886514 A US 886514A US 3674421D A US3674421D A US 3674421DA US 3674421 A US3674421 A US 3674421A
- Authority
- US
- United States
- Prior art keywords
- premises
- tube
- tubes
- casing
- reflector
- 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
- 230000001954 sterilising effect Effects 0.000 title description 7
- 230000005855 radiation Effects 0.000 description 22
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 9
- 230000008901 benefit Effects 0.000 description 3
- 230000002070 germicidal effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000000266 injurious effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
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
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
Definitions
- This invention is concerned with purifying and sterilizing premises.
- This type of apparatus is generally equipped with an ultra-violet ray tube known as a hot-cathode UV tube.
- This type of tube emits not only radiation centered on the 2537 A. line but also radiation centered on the 1850 A. line, which is that corresponding to ozone, another disinfectant and freshener which is powerful but harmful to humans.
- this type of tube since the quantity of ozone released by this type of tube is very slight, it can be used with practically no risk in occupied premises, for example an operating theatre.
- the invention proposes apparatus by means of which premises, for example operating theatres, can be purified when occupied and sterilized when unoccupied.
- the apparatus according to the invention is essentially characterised in that it comprises a case in which forced circulation of the atmosphere of the premises in which the apparatus is situated can be produced, for example, by means of a fan, and this case contains a hot-cathode ultra-violet ray tube and a cold-cathode ultra-violet ray tube.
- the ventilating case is in the form of an elongated box, defining an elongated air flow path, with a suction inlet, near which the fan is situated, and a delivery outlet between which the two tubes are mounted extending axially the length of the flow path, so that all the air drawn in flows correctly along both tubes to be purified and/or sterilized.
- the back of the case is provided with a reflector, preferably in the form of aluminum sheeting crimped and deformed to make successive dihedrons or undulations of which ridges are in a plane close to the two tubes.
- the undulations have a triangular cross section and an edge thereof forms the apex of each triangle. It is these edges that are close to the tubes.
- the two tubes are situated in a plane parallel to the back of the case thus equipped with its retarding reflector, and, to prevent any bombardment of one tube by the other, a metal screen, preferably detachable, is provided between the two tubes.
- That wall of the case opposite the back of the case is in the form of a door which, when open, permits direct radiation into the premises.
- the inside surface of this wall may be provided with a reflector.
- this door has a window obturated with a transparent or translucent sheet, through which one can see whether the apparatus is operating.
- FIG. 1 is a perspective front view, with the cover open;
- FIG. 2 is a section through the apparatus shown in FIG. 1, along a horizontal plane passing between the two tubes;
- FIG. 3 is a cross-section along a plane passing in front of the fan, on a small scale.
- reference 1 designates an oblong casing, with casings 2, 3 at each end.
- Each of the casings 2, 3 has an oblique, slotted front face 4 or 5 respectively.
- the casing 2 is separated from the oblong casing 1 by a wall 6, which contains an aperture 7 and to which two brackets 8, 9 attach a motor 10 for driving a fan 11.
- the casing 3 which is separated from the oblong box 1 by a wall element 12, contains the ignition circuit elements 13, 14 for two ultra-violet ray tubes 15, 16, the said circuits not being described in detail.
- the two tubes 15, 16 are mounted in the elongated box 1 by way of sockets such as 17, 18, mounted respectively on brackets 20 and on the wall element 12.
- the two tubes are parallel to one another and on the axis of the elongated or oblong casing 1, and are in a plane parallel to the back 21 of this casing.
- This back is provided with a reflector 22 made from metal sheeting deformed to give successive dihedrons, of which alternate ridges 23, 24 are in the vicinity of the two tubes 15, 16.
- a metal screen 25, impervious to the radiation of the tubes, situated between the two tubes is mounted on a plate 26 with four clips 27, 28, by means of which the screen is held between the two tubes to prevent bombardment of one by the other.
- the front wall of the oblong casing 1 is formed by a door 29, with hinges 30, 31.
- the inside surface of this door 29 is lined with an undulating reflector 32, and it contains a slot or window 33 covered with a strip 34 of transparent or translucent material.
- the door 29 When the apparatus is to operate in the occupied premises where it is situated, the door 29 is closed and only the tube 15 (which is the hot-cathode tube) and fan unit 10, 11 are connected to the mains.
- the fan draws the air in through the slotted wall 4 and delivers it into the casing 1 in the direction of the outlet formed by the slotted wall 5.
- the air sweeps over the tube 15 and is purified while in contact with this tube by the ultra-violet radiation emitted by the tube.
- This contact between the air and the tube 15 is improved by the eddies produced in the air-stream by the reflector 22 with the dihedrons 23, 24.
- the window 33, 34 makes it possible to see whether the apparatus is operating.
- the tube 16 (the cold-cathode tube) is also switched on, and this both emits ultra-violet radiation and produces ozone.
- the period during which the two tubes act on the air-stream is increased by the reflector 22 with the dihedrons 23, 24, as in the preceding case, so that the air discharged through the slotted plate is very pure.
- the door may be pivoted into the position shown in FIG. 1.
- the reflector 32 then reflects some of the radiation onto the ceiling, if the apparatus is a ceiling fitting.
- the apparatus may be mounted as a wall fitting or be mobile in the premises which are to be purified, while still retaining its advantages connected with the in situ action of the ozone on the air purified by the hot-cathode tube 15.
- the embodiment illustrated is not restrictive, and the invention also covers any other embodiment which combines in a single case combinations of hotcathode and cold-cathode UV lamps with the advantage of permitting the ozone to act where it is produced on the air-stream already purified by means of a hot-cathode tube.
- Apparatus for purifying the air in a space and sterilizing said space comprising, means comprising a casing defining an elongated, axially confined flow path for air, means to positively flow air into said casing at an inlet end of said flow path and out of said casing at an opposite outlet end of said flow path, an elongated hot-cathode ultraviolet ray tube in said flow path disposed longitudinally extending in the same general direction of said flow path and having a length substantially the length of said flow path between the inlet end and outlet end thereof, said tube emitting ultraviolet radiation of a germicidal wavelength in operation, an elongated coldcathode ultraviolet ray tube disposed in said flow path generally parallel to said hot-cathode tube and of substantially the same length and selectively energizable to emit germicidal radiation and for developing ozone in said flow path, common means providing electrical sockets for both tubes for joint or individual energization thereof, a radiation reflector disposed adjacent one sidewall of said casing and
- Apparatus 'for purifying the air in a space and sterilizing said space including a pivitally mounted elongated door constituting a second sidewall of said casing extending the axial length of said flow path between the inlet end and outlet end of said flow path, and a second radiation reflector on the inner side of said door disposed extending substantially the full length of said door and the height of said flow path, said second sidewall being disposed to said one sidewall of said casing, and said tubes being disposed extending between both radiation reflectors.
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)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR182587 | 1968-12-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3674421A true US3674421A (en) | 1972-07-04 |
Family
ID=8659691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US886514A Expired - Lifetime US3674421A (en) | 1968-12-31 | 1969-12-19 | Apparatus for purifying and sterilizing premises |
Country Status (8)
Country | Link |
---|---|
US (1) | US3674421A (no) |
BE (1) | BE743316A (no) |
DE (1) | DE1965022B2 (no) |
FR (1) | FR1604451A (no) |
GB (1) | GB1289150A (no) |
LU (1) | LU59997A1 (no) |
MC (1) | MC885A1 (no) |
NL (1) | NL155732B (no) |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757495A (en) * | 1971-12-30 | 1973-09-11 | W Sievers | Portable air purifier |
US3937967A (en) * | 1974-04-16 | 1976-02-10 | Kurt Steinitz | Electronic air purifier with ozone suppression |
US3970426A (en) * | 1974-03-18 | 1976-07-20 | Deering Milliken Research Corporation | Method and apparatus for the presterilization of packing machines |
US4553992A (en) * | 1984-10-17 | 1985-11-19 | Boissinot Jean Guy | Scrubber apparatus for purifying foul air produced during an embalming, an autopsy or the like |
US4931654A (en) * | 1989-10-18 | 1990-06-05 | Horng Wen Jenn | Radiant air-sterilizing apparatus |
US5112370A (en) * | 1989-12-13 | 1992-05-12 | Michele Gazzano | Device for sterilizing a forced air flow by means of ultraviolet radiations |
EP0560690A1 (fr) * | 1992-03-13 | 1993-09-15 | Jean Decupper | Dispositif pour l'équipement de chambres froides utilisées pour le stockage de produits alimentaires |
US5480615A (en) * | 1994-12-12 | 1996-01-02 | Curry; Jeanette | Germicide diffuser |
US5523057A (en) * | 1995-02-06 | 1996-06-04 | Mazzilli; Matt | Air sterilization and filteration apparatus |
US5547635A (en) * | 1987-10-22 | 1996-08-20 | Duthie, Jr.; Robert E. | Sterilization method and apparatus |
US5612001A (en) * | 1991-10-18 | 1997-03-18 | Matschke; Arthur L. | Apparatus and method for germicidal cleansing of air |
US5891399A (en) * | 1993-12-22 | 1999-04-06 | Klean As | Cleaning arrangement including filters and ultraviolet radiation |
US5997812A (en) * | 1996-06-20 | 1999-12-07 | Coolant Treatment Systems, L.L.C. | Methods and apparatus for the application of combined fields to disinfect fluids |
US6083387A (en) * | 1996-06-20 | 2000-07-04 | Burnham Technologies Ltd. | Apparatus for the disinfection of fluids |
US6221314B1 (en) | 1997-11-04 | 2001-04-24 | Wil Bigelow | Air actinism chamber apparatus and method |
US20020031460A1 (en) * | 2000-07-17 | 2002-03-14 | Kulp John C. | UV air cleaning & disinfecting system |
ES2169007A1 (es) * | 2000-12-05 | 2002-06-16 | Tecnitem S L | Desinfectadora del aire aplicable sobre conductos de aire acondicionado y plenum de retorno. |
US6500387B1 (en) | 2000-05-19 | 2002-12-31 | Nukuest, Inc. | Air actinism chamber apparatus and method |
US20030217641A1 (en) * | 1992-10-09 | 2003-11-27 | Palestro Richard P. | Ultraviolet germicidal apparatus and method |
US6656424B1 (en) | 2000-02-18 | 2003-12-02 | Uvas, Llc | Ultraviolet area sterilizer and method of area sterilization using ultraviolet radiation |
US20040166037A1 (en) * | 2003-02-25 | 2004-08-26 | Youdell Harry F. | Air filtration and treatment apparatus |
US20050000365A1 (en) * | 2003-05-08 | 2005-01-06 | Roger Nelsen | System for purifying and removing contaminants from gaseous fluids |
US20050175498A1 (en) * | 1997-09-17 | 2005-08-11 | Jerry Nelson | Method and apparatus for producing purified or ozone enriched air to remove contaminants from fluids |
US20060263272A1 (en) * | 2003-06-16 | 2006-11-23 | Dionisio James L | Cartridge device containing uvc for air disinfection. "uvbio-clean" |
US20080212337A1 (en) * | 2005-07-20 | 2008-09-04 | Mangiardi John R | Multifunctional Floor Pods |
US20090191100A1 (en) * | 2008-01-29 | 2009-07-30 | Deal Jeffery L | Area sterilizer and method of disinfection |
WO2010026416A1 (en) * | 2008-09-04 | 2010-03-11 | Bae Systems Plc | Sterilizing flammable materials by uv irradiation |
EP2163262A1 (en) * | 2008-09-04 | 2010-03-17 | BAE Systems PLC | Sterilizing flammable materials by UV irradiation |
US20110168898A1 (en) * | 2010-01-14 | 2011-07-14 | Infection Prevention Technologies | Systems and Methods for Emitting Radiant Energy |
US8859994B2 (en) | 2008-01-29 | 2014-10-14 | Jeffery L. Deal | Disinfection device and method |
US20170321877A1 (en) * | 2016-05-09 | 2017-11-09 | John Polidoro | Wall mounted hospital bed, health care facility, or other wall (or surface) type light with ultraviolet-c germicidal (or other) air decontamination system |
US11291743B2 (en) * | 2016-05-09 | 2022-04-05 | John Polidoro | Ceiling-mounted decontamination unit with luminaire |
USD959888S1 (en) * | 2019-07-25 | 2022-08-09 | Lg Electronics Inc. | Bed with sterilizing bar |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2497826A1 (fr) * | 1981-01-12 | 1982-07-16 | Pasteur Institut | Hotte pour la manipulation de milieux biologiques, tels que des cultures cellulaires |
GB2212370B (en) * | 1987-11-09 | 1992-02-05 | Tiong Ee Ong | Air purifying apparatus |
FR2666742A1 (fr) * | 1990-09-17 | 1992-03-20 | Decupper Jean | Dispositif pour l'equipement de chambres froides utilisees pour le stockage de produits alimentaires. |
US9867897B2 (en) | 2012-09-01 | 2018-01-16 | Dbg Group Investments Llc | Active photocatalytic oxidation |
EP3291844B1 (en) * | 2015-05-06 | 2023-08-23 | Dbg Group Investments, LLC | Active photocatalytic oxidation |
ES1255880Y (es) * | 2020-08-12 | 2021-01-29 | Oozbein Biohigiene Sl | Dispositivo generador de ozono para techo |
-
1968
- 1968-12-31 FR FR182587A patent/FR1604451A/fr not_active Expired
-
1969
- 1969-12-05 MC MC863A patent/MC885A1/xx unknown
- 1969-12-11 LU LU59997D patent/LU59997A1/xx unknown
- 1969-12-16 NL NL6918817.A patent/NL155732B/xx not_active IP Right Cessation
- 1969-12-17 BE BE743316D patent/BE743316A/xx unknown
- 1969-12-18 GB GB1289150D patent/GB1289150A/en not_active Expired
- 1969-12-19 US US886514A patent/US3674421A/en not_active Expired - Lifetime
- 1969-12-27 DE DE19691965022 patent/DE1965022B2/de not_active Ceased
Cited By (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757495A (en) * | 1971-12-30 | 1973-09-11 | W Sievers | Portable air purifier |
US3970426A (en) * | 1974-03-18 | 1976-07-20 | Deering Milliken Research Corporation | Method and apparatus for the presterilization of packing machines |
US3937967A (en) * | 1974-04-16 | 1976-02-10 | Kurt Steinitz | Electronic air purifier with ozone suppression |
US4553992A (en) * | 1984-10-17 | 1985-11-19 | Boissinot Jean Guy | Scrubber apparatus for purifying foul air produced during an embalming, an autopsy or the like |
US5547635A (en) * | 1987-10-22 | 1996-08-20 | Duthie, Jr.; Robert E. | Sterilization method and apparatus |
US4931654A (en) * | 1989-10-18 | 1990-06-05 | Horng Wen Jenn | Radiant air-sterilizing apparatus |
US5112370A (en) * | 1989-12-13 | 1992-05-12 | Michele Gazzano | Device for sterilizing a forced air flow by means of ultraviolet radiations |
US5612001A (en) * | 1991-10-18 | 1997-03-18 | Matschke; Arthur L. | Apparatus and method for germicidal cleansing of air |
EP0560690A1 (fr) * | 1992-03-13 | 1993-09-15 | Jean Decupper | Dispositif pour l'équipement de chambres froides utilisées pour le stockage de produits alimentaires |
FR2693259A1 (fr) * | 1992-03-13 | 1994-01-07 | Decupper Jean | Dispositif pour l'équipement de chambres froides utilisées pour le stockage de produits alimentaires. |
US20030217641A1 (en) * | 1992-10-09 | 2003-11-27 | Palestro Richard P. | Ultraviolet germicidal apparatus and method |
US5891399A (en) * | 1993-12-22 | 1999-04-06 | Klean As | Cleaning arrangement including filters and ultraviolet radiation |
US5480615A (en) * | 1994-12-12 | 1996-01-02 | Curry; Jeanette | Germicide diffuser |
US5523057A (en) * | 1995-02-06 | 1996-06-04 | Mazzilli; Matt | Air sterilization and filteration apparatus |
US5997812A (en) * | 1996-06-20 | 1999-12-07 | Coolant Treatment Systems, L.L.C. | Methods and apparatus for the application of combined fields to disinfect fluids |
US6083387A (en) * | 1996-06-20 | 2000-07-04 | Burnham Technologies Ltd. | Apparatus for the disinfection of fluids |
US20050175498A1 (en) * | 1997-09-17 | 2005-08-11 | Jerry Nelson | Method and apparatus for producing purified or ozone enriched air to remove contaminants from fluids |
US6221314B1 (en) | 1997-11-04 | 2001-04-24 | Wil Bigelow | Air actinism chamber apparatus and method |
US6656424B1 (en) | 2000-02-18 | 2003-12-02 | Uvas, Llc | Ultraviolet area sterilizer and method of area sterilization using ultraviolet radiation |
US6500387B1 (en) | 2000-05-19 | 2002-12-31 | Nukuest, Inc. | Air actinism chamber apparatus and method |
US20020031460A1 (en) * | 2000-07-17 | 2002-03-14 | Kulp John C. | UV air cleaning & disinfecting system |
US6855295B2 (en) * | 2000-07-17 | 2005-02-15 | John C. Kulp | UV air cleaning and disinfecting system |
ES2169007A1 (es) * | 2000-12-05 | 2002-06-16 | Tecnitem S L | Desinfectadora del aire aplicable sobre conductos de aire acondicionado y plenum de retorno. |
US20040166037A1 (en) * | 2003-02-25 | 2004-08-26 | Youdell Harry F. | Air filtration and treatment apparatus |
US20050000365A1 (en) * | 2003-05-08 | 2005-01-06 | Roger Nelsen | System for purifying and removing contaminants from gaseous fluids |
US6939397B2 (en) | 2003-05-08 | 2005-09-06 | Eco-Rx, Inc. | System for purifying and removing contaminants from gaseous fluids |
US20060263272A1 (en) * | 2003-06-16 | 2006-11-23 | Dionisio James L | Cartridge device containing uvc for air disinfection. "uvbio-clean" |
US7175814B2 (en) | 2003-06-16 | 2007-02-13 | Dionisio James L | Air disinfecting system and cartridge device containing ultraviolet light |
US7841737B2 (en) * | 2005-07-20 | 2010-11-30 | Optimus Services Llc | Ambient lighting in surgical environments |
US20080212337A1 (en) * | 2005-07-20 | 2008-09-04 | Mangiardi John R | Multifunctional Floor Pods |
US8859994B2 (en) | 2008-01-29 | 2014-10-14 | Jeffery L. Deal | Disinfection device and method |
US20090191100A1 (en) * | 2008-01-29 | 2009-07-30 | Deal Jeffery L | Area sterilizer and method of disinfection |
US8067750B2 (en) | 2008-01-29 | 2011-11-29 | Deal Jeffery L | Area sterilizer and method of disinfection |
WO2010026416A1 (en) * | 2008-09-04 | 2010-03-11 | Bae Systems Plc | Sterilizing flammable materials by uv irradiation |
EP2163262A1 (en) * | 2008-09-04 | 2010-03-17 | BAE Systems PLC | Sterilizing flammable materials by UV irradiation |
US8894925B2 (en) | 2008-09-04 | 2014-11-25 | Bae Systems Plc | Treating flammable materials |
US20110168898A1 (en) * | 2010-01-14 | 2011-07-14 | Infection Prevention Technologies | Systems and Methods for Emitting Radiant Energy |
US8455832B2 (en) | 2010-01-14 | 2013-06-04 | Infection Prevention Technologies | Systems and methods for emitting radiant energy |
US8841634B2 (en) | 2010-01-14 | 2014-09-23 | Infection Prevention Technologies | Systems and methods for emitting radiant energy |
US10064968B2 (en) | 2010-01-14 | 2018-09-04 | Skytron, Llc | Systems and methods for emitting radiant energy |
US20170321877A1 (en) * | 2016-05-09 | 2017-11-09 | John Polidoro | Wall mounted hospital bed, health care facility, or other wall (or surface) type light with ultraviolet-c germicidal (or other) air decontamination system |
US10808964B2 (en) * | 2016-05-09 | 2020-10-20 | John Polidoro | Wall mounted hospital bed, health care facility, or other wall (or surface) type light with Ultraviolet-C germicidal (or other) air decontamination system |
US11291743B2 (en) * | 2016-05-09 | 2022-04-05 | John Polidoro | Ceiling-mounted decontamination unit with luminaire |
USD959888S1 (en) * | 2019-07-25 | 2022-08-09 | Lg Electronics Inc. | Bed with sterilizing bar |
Also Published As
Publication number | Publication date |
---|---|
DE1965022B2 (de) | 1973-04-05 |
DE1965022A1 (de) | 1970-07-23 |
NL155732B (nl) | 1978-02-15 |
FR1604451A (no) | 1971-11-08 |
GB1289150A (no) | 1972-09-13 |
MC885A1 (fr) | 1972-03-06 |
LU59997A1 (no) | 1970-02-11 |
NL6918817A (no) | 1970-07-02 |
BE743316A (no) | 1970-06-17 |
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