GB2452341A - An ultra violet disinfection lamp - Google Patents
An ultra violet disinfection lamp Download PDFInfo
- Publication number
- GB2452341A GB2452341A GB0717084A GB0717084A GB2452341A GB 2452341 A GB2452341 A GB 2452341A GB 0717084 A GB0717084 A GB 0717084A GB 0717084 A GB0717084 A GB 0717084A GB 2452341 A GB2452341 A GB 2452341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- filter
- lamp assembly
- assembly according
- sleeve
- 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- Withdrawn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
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000010453 quartz Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 150000002823 nitrates Chemical class 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002826 nitrites Chemical class 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010413 mother solution Substances 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
-
- 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
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultra-violet radiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/326—Lamp control systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
A lamp assembly configured to fit within a sleeve, the assembly comprising: a lamp and a filter located outside said lamp, such that in use said filter is provided between said sleeve and said lamp said filter being configured to suppress transmission of radiation at predetermined wavelengths output by said lamp. The lamp assembly may be used for ultraviolet water treatment and disinfection.
Description
A Lamj, Assembly, a Disinfection Apparatus and a Method of Manufacturing a Lamp Assemby The present invention is concerned with a lamp assembly with a filter for filtering out radiation with wavelengths which can cause undesirable photochemjcal reactions. More specifically, the present invention is concerned with UV disinfection.
It is known that UV light can be used for disinfection. It is also known that UV light will cause certain photochemical reactions. For example UV light with wavelengths of approximately 200nni or less will breakdown chlorine. Chlorine is often added as part of a water treatment process. If UV and chlorine are used together, it is necessary to filter out the UV wavelengths to prevent breakdown of the chlorine.
Another example is the conversion of nitrates to nitrite. In agricultural applications nitrite is toxic and only permissible in very small doses in run-off water. However nitrate is allowable in far higher doses. Again there is a need to prevent the UV disinfection process from changing relatively nitrates into toxic nitrites.
In UV water treatment apparatus, the UV source is generally a lamp. The lamp is provided within a sleeve which forms the barrier between the water which is to be treated and the lamp. Traditionally, this sleeve is quartz which has been doped with a material to filter out these chlorine damaging wavelengths. However, the inventors have realized that doping of the quartz sleeve reduces the strength of the sleeve and can lead to early failure of the system due to cracking and breakage. Since the sleeve forms a mechanical barrier between the water being treated and the UV lamp, damage to the sleeve causes failure of the whole apparatus.
Mother solution to filtering out the wavelengths which cause undesirable photochemjcal reactions has been to dope the quartz envelope of the actual lamp itself.
However, this also causes problems of rapid ageing and potential failure of the lamp.
Although doping of the quartz has been discussed to filter out the wavelengths which cause problems in the breakdown of chlorine and the conversion of nitrate to nitrite, it is also used to filter out UV to prevent other photochemjcal reactions.
The present invention has been designed to address the above problem and, in a first aspect provides a lamp assembly configured to fit within a sleeve, the assembly comprising: a lamp and a filter located outside said lamp, such that in use said filter is provided between said sleeve and said lamp said filter being configured to suppress transmission of radiation at predetermined wavelengths output by said lamp.
Generally, the lamp is a UV lamp and said filter is configured to suppress transmission of predetermined UV wavelengths. However, the present invention may be applied to other systems where it is desirable to block the output of the lamp over part of its output range of wavelengths Generally, the lamp assembly will be used in disinfection apparatus.
UV radiation generally spans with wavelength range from 10 nni to 380 nm, with 10 nm to 200 nni being known as the extreme UV range and 200 to 380 nm as the near UV range. Around 250 nni to 260 rim is believed to be the optimum germicidal UV range with the value of 253.7 nm often being quoted in the literature.
As previously described, it is desirable to filter out the extreme UV wavelengths (200nrn or less) to prevent chlorine breakdown and conversion of nitrates to nitrites. It may also be preferable to filter our longer wavelengths e.g. 300nm or more.
Preferably, the filter comprises a doped quartz tube. However, it may be any other type of material which filters the required wavelengths and which can withstand the temperatures Outputted by the lamp. The tube may be doped with Titanium Dioxide.
To prevent heat being trapped between the filter and the lamp, preferably a space is formed between the filter and the lamp and the space is ventilated. Ventilation is preferably provided by allowing air to circulate around said filter.
The lamp is preferably elongate and retaining means are provided to retain said filter with said lamp. Preferably said retaining means comprise end pieces provided at either end of said lamp which prevent said filter from sliding off said lamp. The end pieces may be ceramic. Ventilation can be provided by making the filter shorter than the distance between the end pieces.
In a second aspect the present invention provides a disinfection apparatus Comprising a chamber for containing water which is to be disinfectecj, a sleeve provided in said chamber and a lamp assembly as described above provided in said sleeve.
In a third aspect, the present invention provides a method for manufacturing a lamp assembly said method comprising: providing a lamp; placing a filter around said lamp, said filter being configured to suppress transmission of radiation at predetermined wavelengths; and attaching end pieces at either end of said lamp such that said filter is retained around said lamp by said end pieces.
The present invention will now be described with reference to the following non-limiting preferred emboditnents in which: Figure 1 is a schematic of a UV disinfection apparatus; Figure 2 is a lamp assembly in accordance with an embodiment of the present invention; and Figures 3a to 3c are schematics showing construction of the lamp assembly.
Figure I shows a UV disinfection apparatus for use in disinfecting water. The UV disinfection apparatus of Figure 1 comprises a disinfection chamber 1 which is in the form of a pipe. The pipe is connectable at its ends 3 and 5 to a water system. However, any fluid may be used. In this particular example, water flows through the pipe in the general direction denoted by arrow 7, but may also flow in the other direction.
The pipe itself generally comprises stainless steel and will have a diameter of approximately from 10.2 cm to l2l.9cm (approximately 4 inches to 48 inches).
The chamber is provided with two cup-shaped projections 9 and 11, both of which are shaped to receive and accommodate the ends of sleeve 13. As an alternative or in addition to cup shaped projections, inserts may be cut into the body of the chamber which facilitate the arrangement of a plurality of lamps and monitors etc. Sleeve 13 is an elongated tube which is sealed at either end to chamber 5. Sleeve 13 is provided at an angle of approximately 45° to the general flow direction of the fluid 7.
The sleeve 13 houses UV lamp assembly 14 and thus UV lamp assembly 14 is also provided at an angle of approximately 45° to the general flow direction of the fluid 7.
The lamp assembly will be described in more detail with reference to Figure 2.
Placing the lamp assembly 14 at an angle means that a longer lamp can be used since the length of the lamp does not have equal that of the diameter of the tube of the pipe.
Thus, a longer, lower power density lamp may be used. Also, using a longer lamp which is placed non perpendicular to the direction of fluid flow increases the residence time of the chamber.
The lamp assembly 14 is monitored via UV monitoring means that in this example is UV camera 15. UV camera 15 is provided within projection 9 of pipe I and is positioned to measure radiation from the end of UV lamp assembly 14.
Finally, the UV apparatus comprises a wiper 17 which is configured to move along sleeve 13 in the direction of arrow 19 in order to clean sleeve 13. Although not shown, the wiper 17 is also configured to wipe camera 15. During use, the wiper 17 moves under the control of a wiper drive mechanism (not shown) to avoid blocking output from the UV lamp assembly 14, this drive mechanism is housed in projections 9 and 11.
The lamp assembly 14 shown in figure 1 comprises a lamp which may be a medium pressure IJV or a low pressure UV lamp. Regardless of the type of lamp used, all UV lamps will emit some radiation with wavelengths of less 200nm. However, this problem is particularly pronounced with medium pressure lamps.
The water system of figure 1 may contain chlorine. The lamp assembly of figure 2 comprises a UV lamp 101 which may be a low pressure or medium pressure lamp. At either end of the elongate lamp 101 are provided ceramic end pieces 103 and 105.
Typically, the end pieces are circular, but they may be of any shape. The ceramic end pieces 103 and 105 are good thermal conductors which serve to conduct heat away from the end of the lamp when in use. The wire 107 joins the lamp through the ceramic end pieces and through connector iii.
As is shown in figure 2, the lamp 101 sits within sleeve 121. Sleeve 121 sits as shown in figure 1 as a barrier between the lamp assembly and the water flow 123.
In figure 2, a doped quartz tube 125 is provided around the lamp 101. The doped quartz tube 125 is doped with titanium dioxide. When it is configured to prevent or minimize transmission of UV radiation with wavelengths of less than 200nm, the titanium dioxide is approx. 0.125% by weight.
The ceramic end pieces 103 and 105 are extended to prevent quartz tube 125 from sliding off the lamp. This allows the lamp assembly to be shipped and installed as a single unit.
Typical dimensions for the filter tube are 32mm diameter, 1.7mm wall thickness and 730mm long. There is a gap between the filter tube 125 and the end pieces 103, 105 so that heat is not trapped in the lamp.
Figures 3a to c schematically show how the lamp assembly of figure 2 is manufactured.
Figure 3a shows a lamp 200 which is of a standard design. The lamp comprises a quartz envelope which seals in a mercury vapour. The quartz envelope is crimped at ends 203 onto the electrode assembly (not shown).
Once the lamp 200 has been made crimped, a filter 205 which in this embodiment is a doped quartz tube is provided on the lamp.
Next, ceramic end pieces 207 are glued onto the crimped ends 203 of lamp 200 as shown in figure 3c. It should be noted, that the ceramic end pieces do not rigidly hold the filter tube 205 in place. The filter tube is shorter than the distance between the ceramic end pieces 207 in-order to avoid a heat trap close to the lamp. Thus, the filter 205 just sits around the lamp and is not restrained by an other means than the ceramic end pieces prevent the filter from sliding off the lamp length ways and obviously radial removal of the filter is not possible due to the presence of the lamp.
Claims (17)
- CLAIMS: 1. A lamp assembly configured to fit within a sleeve, the assembly comprising: a lamp and a filter located outside said lamp, such that in use said filter is provided between said sleeve and said lamp said filter being configured to suppress transmission of radiation at predetermined wavelengths output by said lamp.
- 2. A lamp assembly according to claim 1, wherein said lamp is a UV lamp and said filter is configured to suppress transmission of predetermined UV wavelengths.
- 3. A lamp assembly according to either of claims 1 or 2, wherein said lamp assembly is located within a sleeve of a disinfection apparatus.
- 4. A lamp assembly according to any preceding claim, where a space is formed between the filter and the lamp and the space is ventilated.
- 5. A lamp assembly according to any preceding claim, wherein said filter is configured to filter out at least some UV wavelengths of 200nm or less.
- 6. A lamp assembly according to any preceding claim, wherein said filter is configured to filter out at least some UV wavelengths of 300am or more.
- 7. A lamp assembly according to any preceding claim, wherein said filter comprises a doped quartz tube.
- 8. A lamp assembly according to claim 7, wherein the tube is doped with Titanium Dioxide.
- 9. A lamp assembly according to any preceding claim, wherein said lamp is elongate and retaining means are provided to retain said filter with said lamp.
- 10. A lamp assembly according to claim 9, wherein said retaining means comprise end pieces provided at either end of said lamp which prevent said filter from sliding off said lamp.
- 11. A lamp assembly according to claim 10, wherein the end pieces are ceramic.
- 12. A lamp assembly according to either of claims 10 or 11, wherein said filter is shorter than the distance between the end pieces.
- 13. A disinfection apparatus comprising a chamber for containing water which is to be disinfected, a sleeve provided in said chamber and a lamp assembly according to any preceding claim provided in said sleeve.
- 14. A method for manufacturing a lamp assembly said method comprising: providing a lamp; placing a filter around said lamp, said filter being configured to suppress transmission of radiation at predetermined wavelengths; and attaching end pieces at either end of said lamp such that said filter is retained around said lamp by said end pieces.
- 15. A lamp assembly as substantially hereinbefore described with reference to the accompanying figures.
- 16. A disinfection apparatus as substantially hereinbefore described with reference to the accompanying figures.
- 17. A method as substantially hereinbefore described with reference to the accompanying figures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0717084A GB2452341A (en) | 2007-09-03 | 2007-09-03 | An ultra violet disinfection lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0717084A GB2452341A (en) | 2007-09-03 | 2007-09-03 | An ultra violet disinfection lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0717084D0 GB0717084D0 (en) | 2007-10-10 |
| GB2452341A true GB2452341A (en) | 2009-03-04 |
Family
ID=38617166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0717084A Withdrawn GB2452341A (en) | 2007-09-03 | 2007-09-03 | An ultra violet disinfection lamp |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2452341A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012081465A (en) * | 2010-09-15 | 2012-04-26 | Toshiba Corp | Ultraviolet water treating apparatus |
| WO2013106076A1 (en) * | 2011-06-08 | 2013-07-18 | Xenex Healthcare Services, Llc | Ultraviolet discharge lamp apparatuses having optical filters which attenuate visible light |
| US8816301B2 (en) | 2012-12-07 | 2014-08-26 | Xenex Healthcare Services, Llc | Lamp and reflector arrangements for apparatuses with multiple germicidal lamps |
| US9114182B2 (en) | 2012-02-28 | 2015-08-25 | Xenex Disinfection Services, Llc | Germicidal systems and apparatuses having hollow tumbling chambers |
| US9165756B2 (en) | 2011-06-08 | 2015-10-20 | Xenex Disinfection Services, Llc | Ultraviolet discharge lamp apparatuses with one or more reflectors |
| US9517284B1 (en) | 2015-07-02 | 2016-12-13 | Xenex Disinfection Services, Llc. | Germicidal apparatuses with configurations to selectively conduct different disinfection modes interior and exterior to the apparatus |
| US9744255B2 (en) | 2012-06-08 | 2017-08-29 | Xenex Disinfection Services, Llc. | Systems which determine operating parameters and disinfection schedules for germicidal devices |
| GB2549114A (en) * | 2016-04-05 | 2017-10-11 | Alpha-Cure Ltd | UV steriliser assembley and method for constructing same |
| US9867894B2 (en) | 2015-07-02 | 2018-01-16 | Xenex Disinfection Services, Llc. | Germicidal apparatuses with configurations to selectively conduct different disinfection modes interior and exterior to the apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004579A1 (en) * | 2001-07-02 | 2003-01-16 | Water For Life Corporation | Fluid purification system |
| GB2389848A (en) * | 2002-06-17 | 2003-12-24 | Hanovia Ltd | Disinfecting a liquid using a UV lamp |
-
2007
- 2007-09-03 GB GB0717084A patent/GB2452341A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004579A1 (en) * | 2001-07-02 | 2003-01-16 | Water For Life Corporation | Fluid purification system |
| GB2389848A (en) * | 2002-06-17 | 2003-12-24 | Hanovia Ltd | Disinfecting a liquid using a UV lamp |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015110231A (en) * | 2010-09-15 | 2015-06-18 | 株式会社東芝 | Ultraviolet rays water treatment apparatus |
| JP2012081465A (en) * | 2010-09-15 | 2012-04-26 | Toshiba Corp | Ultraviolet water treating apparatus |
| US10335506B2 (en) | 2011-06-08 | 2019-07-02 | Xenex Disinfection Services, Llc. | Mobile ultraviolet lamp apparatuses having a reflector system that redirects light to a high touch area of a room |
| US11511007B2 (en) | 2011-06-08 | 2022-11-29 | Xenex Disinfection Services Inc. | Systems which determine operating parameters for germicidal devices |
| US9093258B2 (en) | 2011-06-08 | 2015-07-28 | Xenex Disinfection Services, Llc | Ultraviolet discharge lamp apparatuses having optical filters which attenuate visible light |
| RU2722236C1 (en) * | 2011-06-08 | 2020-05-28 | ЗИНИКС ДИЗИНФЕКШН СЕРВИСИЗ, ЭлЭлСи | Devices with an ultraviolet discharge lamp and one or more reflectors and systems which determine operating parameters and disinfection plans for bactericidal devices |
| US9165756B2 (en) | 2011-06-08 | 2015-10-20 | Xenex Disinfection Services, Llc | Ultraviolet discharge lamp apparatuses with one or more reflectors |
| US11929247B2 (en) | 2011-06-08 | 2024-03-12 | Xenex Disinfection Services Inc. | Ultraviolet lamp apparatuses having automated mobility while emitting light |
| US9698003B2 (en) | 2011-06-08 | 2017-07-04 | Xenex Disinfection Services, Llc. | Ultraviolet discharge lamp apparatuses with one or more reflectors |
| US11000608B2 (en) | 2011-06-08 | 2021-05-11 | Xenex Disinfection Services Inc. | Ultraviolet lamp room/area disinfection apparatuses having integrated cooling systems |
| US9773658B2 (en) | 2011-06-08 | 2017-09-26 | Xenex Disinfection Services, Llc. | Ultraviolet discharge lamp apparatuses having lamp housings which are transparent to ultraviolet light |
| RU2704612C1 (en) * | 2011-06-08 | 2019-10-30 | ЗИНИКС ДИЗИНФЕКШН СЕРВИСИЗ, ЭлЭлСи | Devices with an ultraviolet discharge lamp and one or more reflectors and systems which determine operating parameters and disinfection plans for bactericidal devices |
| WO2013106076A1 (en) * | 2011-06-08 | 2013-07-18 | Xenex Healthcare Services, Llc | Ultraviolet discharge lamp apparatuses having optical filters which attenuate visible light |
| US10004822B2 (en) | 2011-06-08 | 2018-06-26 | Xenex Disinfection Services, Llc. | Mobile ultraviolet lamp apparatuses having a reflector system that redirects light to a high touch area of a room |
| RU2682667C2 (en) * | 2011-06-08 | 2019-03-20 | ЗИНИКС ДИЗИНФЕКШН СЕРВИСИЗ, ЭлЭлСи | Apparatus with ultraviolet discharge lamp and one or more reflectors and systems which determine operating parameters and disinfection schedules for germicidal devices |
| US10772980B2 (en) | 2011-06-08 | 2020-09-15 | Xenex Disinfection Services Inc. | Systems which determine operating parameters and disinfection schedules for germicidal devices |
| US10410853B2 (en) | 2011-06-08 | 2019-09-10 | Xenex Disinfection Services, Llc. | Ultraviolet lamp apparatuses with one or more moving components |
| US9114182B2 (en) | 2012-02-28 | 2015-08-25 | Xenex Disinfection Services, Llc | Germicidal systems and apparatuses having hollow tumbling chambers |
| US9744255B2 (en) | 2012-06-08 | 2017-08-29 | Xenex Disinfection Services, Llc. | Systems which determine operating parameters and disinfection schedules for germicidal devices |
| US8816301B2 (en) | 2012-12-07 | 2014-08-26 | Xenex Healthcare Services, Llc | Lamp and reflector arrangements for apparatuses with multiple germicidal lamps |
| US9867894B2 (en) | 2015-07-02 | 2018-01-16 | Xenex Disinfection Services, Llc. | Germicidal apparatuses with configurations to selectively conduct different disinfection modes interior and exterior to the apparatus |
| US10583213B2 (en) | 2015-07-02 | 2020-03-10 | Xenex Disinfection Services, Inc. | Germicidal apparatuses with configurations to selectively conduct different disinfection modes interior and exterior to the apparatus |
| US9517284B1 (en) | 2015-07-02 | 2016-12-13 | Xenex Disinfection Services, Llc. | Germicidal apparatuses with configurations to selectively conduct different disinfection modes interior and exterior to the apparatus |
| GB2549114A (en) * | 2016-04-05 | 2017-10-11 | Alpha-Cure Ltd | UV steriliser assembley and method for constructing same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0717084D0 (en) | 2007-10-10 |
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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) |