WO2019025199A1 - Disinfection facility for liquids - Google Patents
Disinfection facility for liquids Download PDFInfo
- Publication number
- WO2019025199A1 WO2019025199A1 PCT/EP2018/069608 EP2018069608W WO2019025199A1 WO 2019025199 A1 WO2019025199 A1 WO 2019025199A1 EP 2018069608 W EP2018069608 W EP 2018069608W WO 2019025199 A1 WO2019025199 A1 WO 2019025199A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing body
- disinfection system
- cylindrical housing
- inlet
- fluid
- Prior art date
Links
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 title description 4
- 239000012530 fluid Substances 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 229920003023 plastic Polymers 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 230000001678 irradiating effect Effects 0.000 claims abstract 2
- 238000001816 cooling Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 239000012809 cooling fluid Substances 0.000 claims description 7
- 230000000249 desinfective effect Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- -1 for example Polymers 0.000 description 5
- 230000002070 germicidal effect Effects 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical class [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002351 wastewater 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
-
- 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—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
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
-
- 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
-
- 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
- C02F2201/322—Lamp arrangement
- C02F2201/3222—Units using UV-light emitting diodes [LED]
-
- 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
- C02F2201/322—Lamp arrangement
- C02F2201/3225—Lamps immersed in an open channel, containing the liquid to be treated
-
- 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
- C02F2201/322—Lamp arrangement
- C02F2201/3227—Units with two or more lamps
-
- 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
- C02F2201/322—Lamp arrangement
- C02F2201/3228—Units having reflectors, e.g. coatings, baffles, plates, mirrors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/02—Fluid flow conditions
- C02F2301/026—Spiral, helicoidal, radial
-
- 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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Definitions
- the present invention relates to a disinfecting system for fluids to be disinfected and to a method for disinfecting fluids.
- UV lamps have been used for many decades for the disinfection of drinking water and wastewater, for the disinfection of work areas in biological laboratories and in air conditioning systems.
- UV light is very well suited to deactivate microorganisms such as spores, fungi, bacteria, parasites, algae, etc.
- Disinfecting plants of this type can be used for liquids, such as water, and gases, such as indoor air.
- UV disinfection relies on a physical process.
- bacteria, viruses, etc. are irradiated with the germicidal wavelength of UV radiation, they lose their ability to reproduce and become infected.
- the microorganisms are thus deactivated by photooxidation of their DNA. More than 99.9% of all pathogens can be rendered harmless in fractions of a second in this way.
- the high-energy, entertaining UV radiation has mainly a wavelength of 200 to 280 nm, preferably from 265 to 280 nm. It falls into the so-called short-wave UV-C range and has a strong germicidal effect. However, it has recently been shown that even radiation with a wavelength of up to 405 nm is sufficient to achieve the germicidal effect.
- UV disinfection has many advantages and has been proven for a long time.
- housing bodies are used with an inlet and an outlet, through which the liquid to be disinfected flows and in Their interior has a light source in the form of a mercury vapor lamp that emits UV light.
- UV lamps are not suitable for so-called point-of-use applications and temporary operation.
- mercury is harmful when released, the full radiant power is released only after a warm-up period of several minutes.
- Object of the present invention is therefore to provide a comparison with the prior art improved disinfection system.
- a disinfection system which has a substantially cylindrical housing body with an inlet and an outlet, wherein the cylindrical housing body inside a ring-shaped reaction space surrounding a cylindrical interior, and an LED-based UV light source for irradiation of the annular reaction space flowing through to be disinfected fluid, wherein the cylindrical housing body
- i) consists of UV-transparent glass and on its outer wall an inwardly directed mirror coating, or
- ii) consists of a material selected from the group of glass, plastic and / or metal and on its inner wall has a UV-reflective coating
- iv) is arranged coolably on an outer wall of the cylindrical interior.
- One of the decisive factors for the invention is that the radiation emitted by the LED-based UV light source can not escape and thus the light energy required for the disinfection of the fluids is optimally utilized.
- the cylindrical housing body according to a first embodiment of UV-transparent glass and on its outer wall has an inwardly directed reflection, which reflects the light emitted from the LED-based UV light source radiation.
- the mirror coating on the outer wall of the cylindrical housing body is arranged, a contamination or abrasion of the mirror coating is advantageously excluded by possibly contained in the fluid dirt particles.
- the term UV-transparent glass is understood to mean a vitreous material which is permeable to UV radiation in the wavelength range from 200 to 500 nm.
- the UV-transparent glass preferably consists of a material selected from the group comprising quartz glass, borosilicate glass, the term UV-transparent glass also including UV-permeable plastics, such as, for example, polyethylene terephthalate (PET) and / or polymethyl methacrylate (PMMA) ) within the meaning of the present invention.
- UV-permeable plastics such as, for example, polyethylene terephthalate (PET) and / or polymethyl methacrylate (PMMA)
- the mirror coating is preferably a reflective coating based on aluminum, which is applied to the outer wall of the cylindrical housing body.
- Various coating methods are known in principle to the person skilled in the art. In principle, other materials for the reflective coating, such as silver, can be used.
- the cylindrical housing body consists of a material selected from the group consisting of silicon-based glass, plastic and / or metal and has on its inner wall a UV-reflecting coating which is that of the LED-based UV light source reflected radiation emitted.
- the UV-reflective coating is preferably made of a material selected from the group consisting of high purity, optical PTFE, expanded PTFE (ePTFE), barium sulfate or any other UV-reflective material available.
- PTFE polytetrafluoroethylene
- the particularly advantageous properties of polytetrafluoroethylene (PTFE), such as an extremely low surface tension and high resistance to acids, bases and UV light, have long been known. Furthermore, PTFE is physiologically harmless. Surprisingly, it has now been shown that high-purity, optical PTFE and ePTFE, in addition to the known properties, for light in the wavelength range of 200 to 500 nm shows a high reflection.
- the UV-light-reflecting coating preferably has a layer thickness of at least 250 ⁇ m, more preferably of 500 ⁇ m and very particularly preferably of 1000 ⁇ m.
- Preferred metals are selected from the group comprising aluminum and / or stainless steel, suitable alloys also being conceivable.
- the housing body can be made from almost any common plastic.
- particularly preferred plastics are selected from the group comprising polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyvinyl chloride (PVC) and / or polytetrafluoroethylene (PTFE).
- the LED-based UV light source can be cooled by the arrangement in the cylindrical interior or on an outer wall of the cylindrical interior, so that the heat generated in the process can be dissipated.
- LED-based light source is understood to mean a composite of a multiplicity of light-emitting diodes which are arranged on a carrier strip.
- the light-emitting diodes can emit monochromatic UV light in the wavelength range from 200 to 500 nm.
- the specific wavelength used depends on the planned use of the disinfection system.
- the LED technology offers considerable advantages, especially compared to conventional mercury radiating technology.
- the advantages are in particular: a clearly defined wavelength without disturbing secondary peaks,
- the UV radiation of the LED is available immediately after switching on, previous radiators need a warm-up time of 10 to 20 minutes,
- the LEDs have no aging or reduction of life, with previous known from the prior art emitters lose up to 2 hours of life per switching operation and are not suitable due to the warm-up time for so-called "point of use applications" or discontinuous processes , LED spotlight already,
- the LED light sources have a defined narrow wavelength range, which is provided depending on the purpose and customer request, through the use of LED different geometries of the disinfection system can be realized,
- LEDs are mechanically robust.
- the flow-through housing body has at least one, more preferably a plurality of cross-sectional changes.
- the cross-sectional changes may be formed for example by depressions on the outside of the cylindrical housing body, which cause corresponding bulges on the inside. Also, constrictions or similar cross-sectional changes are conceivable. It may be a single cross-sectional change or a variety of cross-sectional changes.
- the disinfection system further comprises a mixing valve arranged at the inlet, via which a hot and cold water inlet can be connected.
- a hot and cold water inlet can be connected.
- the inlet is arranged at a first end and the outlet is arranged at a second end of the cylindrical housing body, wherein the inlet can be arranged on the circumference as desired.
- the inlet is arranged such that the inlet and thus the flow direction of the fluid are oriented in the direction of a body center of the cylindrical housing body.
- the inlet is arranged tangentially, so that the fluid to be disinfected flows helically through the annular reaction space, from the inlet in the direction of the outlet.
- the disinfection system further comprises a flow-through channel arranged in the cylindrical interior for a cooling fluid, wherein the LED-based UV light source is preferably arranged on an outer wall of the flow-through channel. This makes the LED-based UV light source coolable.
- the inlet for the fluid can be fluidically connected in the housing body with an outlet of the flow-through channel, so that the disinfection system forms an open cooling circuit.
- the disinfectant system supplied to be disinfected fluid is thus initially used as a cooling fluid before it is then supplied to the disinfection.
- the flow-through channel is connected to a closed cooling circuit, which cools the LED-based UV light source back.
- the cooling circuit preferably has a cooling unit that keeps the cooling fluid at a desired temperature.
- the channel is preferably made of a metal, such as aluminum or stainless steel.
- the inlet and the outlet for the fluid to be disinfected are arranged in the region of a first end of the cylindrical housing body, the cylindrical interior preferably extending in the form of a channel coaxially inside the cylindrical housing body, the channel communicating with the housing Inlet for the fluid to be disinfected fluidly connected and in the region of a second end of the cylindrical Housing body has an opening.
- the LED-based UV light source is then placed on the outer wall of the channel.
- the fluid to be disinfected through the channel cools the back of the LED-based UV light source.
- the fluid flows out through the opening and into the annular reaction space through which it flows in the direction of the outlet.
- the radiation emitted and / or reflected by the LED-based UV light source strikes the fluid and disinfects it.
- the opening is helically formed, so that the fluid to be disinfected flows through the annular reaction space in the form of a helix in the direction of the outlet.
- the outer wall of the channel can furthermore preferably be provided with a protective element.
- the outer wall of the channel may be covered with a plastic layer in which the LED-based UV light source is embedded.
- the cylindrical housing body produced from a silicon-based glass can furthermore be provided with a protective layer, for example made of a plastic.
- the housing body may be formed in the form of a Pianarreaktors.
- the present invention also relates to a method for disinfecting fluids, wherein in a first step, a fluid to be disinfected, preferably to be disinfected water, is introduced into the inventive disinfection system and the fluid in a further step by means of UV radiation is disinfected so that a disinfected fluid is obtained.
- FIG. 1 is a greatly simplified schematic representation of a disinfection system according to the invention in longitudinal section, Figure 2 shows an enlarged section of a region A of Figure 1,
- FIG. 3 shows a second embodiment of the disinfection system according to the invention in longitudinal section with an open cooling system
- FIG. 4 shows a third variant of the disinfection system according to the invention in longitudinal section with a closed cooling system
- Figure 5 shows a fourth embodiment of the disinfection system according to the invention in longitudinal section
- Figure 6 shows a fifth embodiment of the disinfection system according to the invention in longitudinal section.
- FIG. 1 shows a greatly simplified schematic illustration of a variant of the inventive disinfection system 1 for fluids to be disinfected in longitudinal section, comprising a substantially cylindrically shaped housing body 10 made of a UV-transparent glass 11 (FIG. 2) with an inlet 12 and an outlet 13 1, the inlet 12 is disposed at a first end of the cylindrical housing body 10 and the outlet 13 at a second end opposite the first end.
- a substantially cylindrically shaped housing body 10 made of a UV-transparent glass 11 (FIG. 2) with an inlet 12 and an outlet 13 1
- the inlet 12 is disposed at a first end of the cylindrical housing body 10 and the outlet 13 at a second end opposite the first end.
- the inlet 12 can be arbitrarily arranged on the circumference, but in the present embodiment it is arranged such that the inlet 12 and thus the flow direction of the fluid are oriented in the direction of a body center of the cylindrical housing body 10.
- the inlet 12 can also be arranged tangentially, so that the fluid to be disinfected helically an annular reaction space 14, from the inlet 12 in the direction of outlet 13 can flow through.
- the annular reaction space 14 surrounds a cylindrical interior 15, on whose outer wall 15a an LED-based UV light source 30 (not shown) is arranged.
- the LED-based UV light source 30 is composed of a plurality of light emitting diodes 31 (not shown) distributed over the entire surface of the outer wall 15 a of the inner space 15.
- the interior space 15 with the light-emitting diodes 31 arranged on the outer wall 15a and further electrical components, such as electrical lines, can be formed as a separate unit, which can be removed from the housing body 10 and thus also exchanged.
- the housing body 10 has on its outer wall 16 an inwardly directed aluminum-based mirror coating 17, for example in the form of a reflective coating (see FIG. 2).
- the UV light emitted by the LED-based UV light source 30, which is shown by way of example in FIG. 2 by means of a beam path 40, is reflected back into the annular reaction space 14 after passing through the UV-transparent glass 11.
- the fluid to be disinfected for example water to be disinfected, flows through the inlet 12 into the housing body 10 or into the annular reaction space 14, where it is irradiated with UV light.
- the specific wavelength of the emitted UV light is preferably in a wavelength range of 200 to 500 nm, more preferably in the wavelength range of 265-280 nm or 400-410 nm.
- FIG. 3 shows a longitudinal section of a second embodiment variant of the disinfection system 1 according to the invention, which further comprises an open cooling system 2 and a mixing valve 50 arranged at the inlet 12.
- the housing body 10 is formed from two cylindrical bodies which form an annular reaction space 14 and an inner space 15 separated therefrom by a wall 15b.
- the cylindrical housing body 10 is provided on an inner wall 16a with a UV-light-reflecting coating 17a, for example comprising ePTFE.
- the interior space 15 furthermore has a throughflowable cylindrical channel 20 for a cooling fluid, which comprises on its outer wall 21 the LED-based light source 30 in the form of a plurality of light-emitting diodes 31.
- the light-emitting diodes 31 emit UV radiation which radiates through the UV light-transparent interior wall 15a into the annular reaction space 14 and disinfects the fluid flowing through the annular reaction space 14.
- the mixing valve 50 arranged at the inlet 12 has in each case a connection for cold and hot water 51, 52 and can be at a corresponding extraction point, as a so-called.
- Point-of-use application can be used, for example, to disinfect tap water immediately prior to removal.
- the cold water inlet 51 is first passed through the channel 20. Because the light-emitting diodes 31 of the LED-based light source 30 are arranged on the outer wall 21 of the channel 20, they are cooled by the fluid flowing through the channel 20, in particular tap water.
- Figure 4 shows a third embodiment of the disinfection system 1 according to the invention in longitudinal section, which further comprises a closed cooling system 3 and arranged at the inlet 12 mixing valve 50 having a connection for cold and hot water 51, 52 comprises.
- the cylindrical housing body 10 has on its UV light-transparent outer wall 16 an inwardly directed aluminum-based mirror coating 17, which reflects the light emitted by the light-emitting diodes 31.
- the cylindrical channel 20 arranged in the interior 15 is connected to a closed cooling system 3, which cools the light-emitting diodes 31 at the rear.
- the cooling system 3 preferably has a cooling unit 4, that the cooling fluid temperature corresponding to a desired temperature.
- FIG. 1 A further embodiment variant of the disinfection system 1 according to the invention is shown in FIG. 1
- the inlet 12 and the outlet 13 for the fluid to be disinfected are arranged in the region of a first end of the cylindrical housing body 10.
- the cylindrical housing body 10 has a plurality of cross-sectional changes 18, which lead to bulges 19 on the inside. These can have virtually any shape, it is essential that they lead in the annular reaction space 14 to a turbulence of the fluid and to a scattering of the emitted UV light by reflection.
- the housing body 10 On its UV light-transparent outer wall, the housing body 10, an aluminum-based mirror coating 17, which reflects the UV light.
- the inner space 15 in the form of a cylindrical channel 20 extends coaxially within the cylindrical housing body 10, so that an annular reaction space 14 is formed.
- the light-emitting diodes 31 are arranged on the outer wall 15 a of the channel 20, so that the fluid to be disinfected through the channel 20 cools the rear side of the diodes 31.
- the fluid to be disinfected is introduced through the cylindrical channel 20 into the disinfection system 1.
- the channel 20 has an opening 22, via which the fluid flowing through the channel 20 flows into the annular reaction space 14 and flows through in the direction of the outlet 13.
- the UV radiation emitted by the LED-based UV light source 30 strikes the fluid and disinfects it.
- FIG. 6 shows a fifth embodiment variant of the disinfection system 1 according to the invention in longitudinal section.
- the outer wall 15a of the channel 20 is provided with a protective element 23, for example in the form of a plastic layer, in which the light-emitting diodes 31 are embedded.
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- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a disinfection facility (1) for fluids to be disinfected, comprising: a substantially cylindrical housing body (10) with an inlet (12) and an outlet (13), the cylindrical housing body (10) having an annular reaction chamber (14) on the inner side, surrounding a cylindrical inner space (15), and an LED-based UV-light source (30) for irradiating the fluid to be disinfected, which flows through the annular reaction chamber (14), the cylindrical housing body (10) i) consisting of a UV-transparent glass and having an inwardly oriented mirror coating (17) on the outer wall (16) thereof, or ii) consisting of a material selected from the group containing glass, plastic and/or metal and having a UV-light-reflecting coating (17a) on the inner wall (16a) thereof, and the LED-based UV-light source (30) being arranged in a coolable manner iii) in the cylindrical inner space (15), or iv) on an outer wall (15a) of the cylindrical inner space (15).
Description
Desinfektionsanlage für Flüssigkeiten Disinfection plant for liquids
Die vorliegende Erfindung betrifft eine Desinfektionsanlage für zu desinfizierende Fluide sowie ein Verfahren zur Desinfektion von Fluiden. The present invention relates to a disinfecting system for fluids to be disinfected and to a method for disinfecting fluids.
Die keimtötende, desinfizierende Wirkung von UV-Licht zur Keimabtötung ist bekannt und wird häufig bei der Wasseraufbereitung verwendet. Beispielsweise werden UV-Strahler seit vielen Jahrzehnten für die Desinfektion von Trinkwasser und Abwasser, zur Desinfektion von Arbeitsbereichen in biologischen Laboratorien und in Klimaanlagen eingesetzt. Mit entsprechender Dosis und Wellenlänge eignet sich UV-Licht sehr gut, um Mikroorganismen wie beispielsweise Sporen, Pilze, Bakterien, Parasiten, Algen usw. zu deaktivieren. Desinfektionsanlagen dieser Art können für Flüssigkeiten, wie beispielsweise Wasser, und Gase, wie beispielsweise Raumluft, eingesetzt werden. The germicidal, disinfecting effect of UV light for germ killing is known and is often used in water treatment. For example, UV lamps have been used for many decades for the disinfection of drinking water and wastewater, for the disinfection of work areas in biological laboratories and in air conditioning systems. With appropriate dose and wavelength UV light is very well suited to deactivate microorganisms such as spores, fungi, bacteria, parasites, algae, etc. Disinfecting plants of this type can be used for liquids, such as water, and gases, such as indoor air.
Im Gegensatz zu chemischen Wasserdesinfektionsverfahren beruht die UV- Desinfektion auf einem physikalischen Prozess. Wenn Bakterien, Viren usw. mit der keimtötenden Wellenlänge der UV-Strahlung bestrahlt werden, verlieren sie ihre Reproduktions- und Infektionsfähigkeit. Die Mikroorganismen werden somit durch Photooxidation ihrer DNA deaktiviert. Mehr als 99,9 % aller Pathogene können auf diese Weise innerhalb von Sekundenbruchteilen unschädlich gemacht werden. Unlike chemical water disinfection processes, UV disinfection relies on a physical process. When bacteria, viruses, etc. are irradiated with the germicidal wavelength of UV radiation, they lose their ability to reproduce and become infected. The microorganisms are thus deactivated by photooxidation of their DNA. More than 99.9% of all pathogens can be rendered harmless in fractions of a second in this way.
Die energiereiche, kurzweilige UV-Strahlung weist dabei hauptsächlich eine Wellenlänge von 200 bis 280 nm, vorzugsweise von 265 bis 280 nm auf. Sie fällt damit in den sogenannten kurzwelligen UV-C-Bereich und hat einen stark keimtötenden Effekt. Allerdings hat sich jüngst gezeigt, dass auch Strahlung mit einer Wellenlänge mit bis zu 405 nm ausreichend ist, um die keimtötende Wirkung zu erzielen. The high-energy, entertaining UV radiation has mainly a wavelength of 200 to 280 nm, preferably from 265 to 280 nm. It falls into the so-called short-wave UV-C range and has a strong germicidal effect. However, it has recently been shown that even radiation with a wavelength of up to 405 nm is sufficient to achieve the germicidal effect.
Die UV-Desinfektion weist viele Vorteile auf und hat sich seit langem bewährt. Beispielsweise werden Gehäusekörper mit einem Einlass und einem Auslass ver- wendet, die mit der zu desinfizierenden Flüssigkeit durchströmt werden und in
ihrem Inneren eine Lichtquelle in Form einer Quecksilberdampflampe aufweisen, die UV-Licht emittiert. UV disinfection has many advantages and has been proven for a long time. For example, housing bodies are used with an inlet and an outlet, through which the liquid to be disinfected flows and in Their interior has a light source in the form of a mercury vapor lamp that emits UV light.
Solche UV-Lampen sind jedoch für sogenannte Point-of-use Anwendungen sowie den temporären Betrieb nicht geeignet. Neben der Tatsache, dass Quecksilber bei Freisetzung gesundheitsschädlich ist, wird die volle Strahlungsleistung erst nach einer Aufwärmphase von mehreren Minuten abgegeben. However, such UV lamps are not suitable for so-called point-of-use applications and temporary operation. In addition to the fact that mercury is harmful when released, the full radiant power is released only after a warm-up period of several minutes.
Aufgabe der vorliegenden Erfindung ist es daher eine gegenüber dem Stand der Technik verbesserte Desinfektionsanlage bereitzustellen. Object of the present invention is therefore to provide a comparison with the prior art improved disinfection system.
Erfindungsgemäß wird die Aufgabe durch eine Desinfektionsanlage gelöst, die einen im Wesentlichen zylindrischen Gehäusekörper mit einem Einlass und einem Auslass aufweist, wobei der zylindrische Gehäusekörper innenseitig einen ring- förmigen Reaktionsraum, der einen zylindrischen Innenraum umgibt, sowie eine LED-basierte UV-Lichtquelle zur Bestrahlung des den ringförmigen Reaktionsraum durchströmenden zu desinfizierenden Fluids aufweist, wobei der zylindrische Gehäusekörper According to the invention the object is achieved by a disinfection system which has a substantially cylindrical housing body with an inlet and an outlet, wherein the cylindrical housing body inside a ring-shaped reaction space surrounding a cylindrical interior, and an LED-based UV light source for irradiation of the annular reaction space flowing through to be disinfected fluid, wherein the cylindrical housing body
i) aus UV-transparentem Glas besteht und auf seiner Außenwand eine nach innen gerichtete Verspiegelung, oder i) consists of UV-transparent glass and on its outer wall an inwardly directed mirror coating, or
ii) aus einem Material besteht ausgewählt aus der Gruppe Glas, Kunststoff und/oder Metall und auf seiner Innenwand eine UV-Licht reflektierende Beschichtung aufweist, und ii) consists of a material selected from the group of glass, plastic and / or metal and on its inner wall has a UV-reflective coating, and
die LED-basierte UV-Lichtquelle the LED based UV light source
iii) in dem zylindrischen Innenraum, oder iii) in the cylindrical interior, or
iv) an einer Außenwand des zylindrischen Innenraums kühlbar angeordnet ist. iv) is arranged coolably on an outer wall of the cylindrical interior.
Für die Erfindung ist unter anderem entscheidend, dass die von der LED- basierten UV-Lichtquelle emittierte Strahlung nicht austreten kann und somit die für die Desinfektion der Fluide erforderliche Lichtenergie optimal ausgenutzt wird . One of the decisive factors for the invention is that the radiation emitted by the LED-based UV light source can not escape and thus the light energy required for the disinfection of the fluids is optimally utilized.
Erfindungsgemäß wird dies dadurch erzielt, dass der zylindrische Gehäusekörper gemäß einer ersten Ausführungsvariante aus UV-transparentem Glas besteht und auf seiner Außenwand eine nach innen gerichtete Verspiegelung aufweist, die die von der LED-basierten UV-Lichtquelle emittierte Strahlung reflektiert. Dadurch, dass die Verspiegelung auf der Außenwand des zylindrischen Gehäusekörpers
angeordnet ist, wird eine Verschmutzung oder Abrasion der Verspiegelung durch in dem Fluid evtl. enthaltende Schmutzpartikel vorteilhafterweise ausgeschlossen. Mit dem Begriff UV-transparentes Glas wird im Sinne der vorliegenden Erfindung ein glasartiges Material verstanden, dass für UV-Strahlung im Wellenlängenbereich von 200 bis 500 nm durchlässig ist. Bevorzugt besteht das UV-transparente Glas aus einem Material ausgewählt aus der Gruppe enthaltend Quarzglas, Boro- silicatglas, wobei unter dem Begriff UV-transparentes Glas auch UV-durchlässige Kunststoffe, wie zum Beispiel Polyethylenterephthalat (PET) und/oder Polyme- thylmethacrylat (PMMA) im Sinne der vorliegenden Erfindung verstanden werden. According to the invention this is achieved in that the cylindrical housing body according to a first embodiment of UV-transparent glass and on its outer wall has an inwardly directed reflection, which reflects the light emitted from the LED-based UV light source radiation. Characterized in that the mirror coating on the outer wall of the cylindrical housing body is arranged, a contamination or abrasion of the mirror coating is advantageously excluded by possibly contained in the fluid dirt particles. For the purposes of the present invention, the term UV-transparent glass is understood to mean a vitreous material which is permeable to UV radiation in the wavelength range from 200 to 500 nm. The UV-transparent glass preferably consists of a material selected from the group comprising quartz glass, borosilicate glass, the term UV-transparent glass also including UV-permeable plastics, such as, for example, polyethylene terephthalate (PET) and / or polymethyl methacrylate (PMMA) ) within the meaning of the present invention.
Bei der Verspiegelung handelt es sich vorzugsweise um eine reflektierende Be- Schichtung auf Basis von Aluminium, die auf die Außenwand des zylindrischen Gehäusekörpers aufgetragen wird . Diverse Beschichtungsverfahren sind dem Fachmann grundsätzlich bekannt. Grundsätzlich können auch andere Materialien für die reflektierende Beschichtung, wie beispielsweise Silber, verwendet werden. Gemäß einer zweiten erfindungsgemäßen Ausführungsvariante besteht der zylindrische Gehäusekörper aus einem Material ausgewählt aus der Gruppe enthaltend Silizium-basiertes Glas, Kunststoff und/oder Metall und weist auf seiner Innenwand eine UV-Licht reflektierende Beschichtung auf, die die von der LED- basierten UV-Lichtquelle emittierte Strahlung reflektiert. The mirror coating is preferably a reflective coating based on aluminum, which is applied to the outer wall of the cylindrical housing body. Various coating methods are known in principle to the person skilled in the art. In principle, other materials for the reflective coating, such as silver, can be used. According to a second embodiment variant according to the invention, the cylindrical housing body consists of a material selected from the group consisting of silicon-based glass, plastic and / or metal and has on its inner wall a UV-reflecting coating which is that of the LED-based UV light source reflected radiation emitted.
Die UV-Licht reflektierende Beschichtung besteht vorzugsweise aus einem Material ausgewählt aus der Gruppe umfassend hochreines, optisches PTFE, expandiertes PTFE (ePTFE), Bariumsulfat oder einem anderen verfügbaren UV-Licht reflektierenden Material. The UV-reflective coating is preferably made of a material selected from the group consisting of high purity, optical PTFE, expanded PTFE (ePTFE), barium sulfate or any other UV-reflective material available.
Die besonders vorteilhaften Eigenschaften von Polytetrafluorethylen (PTFE), wie eine äußerst niedrige Oberflächenspannung sowie eine hohe Beständigkeit gegenüber Säuren, Basen und UV-Licht, sind seit langem bekannt. Weiterhin ist PTFE physiologisch unbedenklich. Überraschenderweise hat sich nun gezeigt, dass hochreines, optisches PTFE und ePTFE, neben den bekannten Eigenschaften, für Licht im Wellenlängenbereich von 200 bis 500 nm eine hohe Reflexion zeigt.
Vorzugsweise weist die UV-Licht reflektierende Beschichtung eine Schichtdicke von mindestens 250 pm, mehr bevorzugt von 500 μηι und ganz besonders bevorzugt von 1000 pm auf. The particularly advantageous properties of polytetrafluoroethylene (PTFE), such as an extremely low surface tension and high resistance to acids, bases and UV light, have long been known. Furthermore, PTFE is physiologically harmless. Surprisingly, it has now been shown that high-purity, optical PTFE and ePTFE, in addition to the known properties, for light in the wavelength range of 200 to 500 nm shows a high reflection. The UV-light-reflecting coating preferably has a layer thickness of at least 250 μm, more preferably of 500 μm and very particularly preferably of 1000 μm.
Bevorzugte Metalle sind ausgewählt aus der Gruppe umfassend Aluminium und/oder Edelstahl, wobei geeignete Legierungen ebenfalls denkbar sind . Preferred metals are selected from the group comprising aluminum and / or stainless steel, suitable alloys also being conceivable.
Grundsätzlich kann der Gehäusekörper aus nahezu jedem gängigen Kunststoff hergestellt werden. Besonders bevorzugte Kunststoff sind jedoch ausgewählt aus der Gruppe umfassend Polyethylenterephthalat (PET), Polymethylmethacrylat (PMMA), Polyvinylchlorid (PVC) und/oder Polytetrafluorethylen (PTFE). In principle, the housing body can be made from almost any common plastic. However, particularly preferred plastics are selected from the group comprising polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyvinyl chloride (PVC) and / or polytetrafluoroethylene (PTFE).
Weiterhin ist für die vorliegende Erfindung entscheidend, dass die LED-basierte UV-Lichtquelle durch die Anordnung in dem zylindrischen Innenraum oder an einer Außenwand des zylindrischen Innenraums kühlbar ist, so dass die im Prozess entstehende Wärme abführbar ist. Furthermore, it is crucial for the present invention that the LED-based UV light source can be cooled by the arrangement in the cylindrical interior or on an outer wall of the cylindrical interior, so that the heat generated in the process can be dissipated.
Mit dem Begriff einer LED-basierten Lichtquelle wird im Sinne der vorliegenden Erfindung ein Verbund aus einer Vielzahl von lichtemittierenden-Dioden verstanden, die auf einem Trägerstreifen angeordnet sind . For the purposes of the present invention, the term "LED-based light source" is understood to mean a composite of a multiplicity of light-emitting diodes which are arranged on a carrier strip.
Dabei können die lichtemittierenden-Dioden monochromatisches UV-Licht im Wellenlängenbereich von 200 bis 500 nm emittieren. Die spezifisch eingesetzte Wellenlänge ist hierbei abhängig von der geplanten Verwendung der Desinfektionsanlage. The light-emitting diodes can emit monochromatic UV light in the wavelength range from 200 to 500 nm. The specific wavelength used depends on the planned use of the disinfection system.
Die LED-Technik bietet erheblich Vorteile, insbesondere gegenüber herkömmlicher Quecksilber-Strahlertechnik. Die Vorteile sind insbesondere: eine klar definierte Wellenlänge ohne störende Nebenpeaks, The LED technology offers considerable advantages, especially compared to conventional mercury radiating technology. The advantages are in particular: a clearly defined wavelength without disturbing secondary peaks,
eine schonende Verfahrensweise, a gentle procedure,
selektive Umsetzung und daher keine störenden Nebenreaktionen, gefahrlose Niederspannungstechnik, selective conversion and therefore no interfering side reactions, safe low-voltage technology,
- lange Lebensdauer und einfache Entsorgung der lichtemittierenden- Dioden,
Schadstoffabbau ohne Zusatz von aggressiven Chemikalien, long life and easy disposal of the light-emitting diodes, Pollutant removal without the addition of aggressive chemicals,
die UV-Strahlung der LED steht unmittelbar nach dem Einschalten zur Verfügung, wobei bisherige Strahler eine Aufwärmzeit von 10 bis 20 Minuten benötigen, the UV radiation of the LED is available immediately after switching on, previous radiators need a warm-up time of 10 to 20 minutes,
bei Schaltvorgängen weisen die LED keine Alterung oder Reduzierung der Lebensdauer auf, wobei bisherige aus dem Stand der Technik bekannte Strahler etwa bis zu 2 Stunden an Lebensdauer je Schaltvorgang verlieren und aufgrund der Aufwärmzeit für sogenannte„Point of Use Anwendungen" oder diskontinuierliche Prozesse nicht geeignet sind, LED Strahler dagegen schon, during switching operations, the LEDs have no aging or reduction of life, with previous known from the prior art emitters lose up to 2 hours of life per switching operation and are not suitable due to the warm-up time for so-called "point of use applications" or discontinuous processes , LED spotlight already,
die LED Lichtquellen weisen einen definierten engen Wellenlängenbereich auf, der je nach Anwendungszweck und Kundenwunsch bereitgestellt ist, durch den Einsatz von LED können unterschiedliche Geometrien der Desinfektionsanlage realisiert werden, The LED light sources have a defined narrow wavelength range, which is provided depending on the purpose and customer request, through the use of LED different geometries of the disinfection system can be realized,
zudem sind LED mechanisch robust. In addition, LEDs are mechanically robust.
In einer besonders vorteilhaften Ausführungsvariante weist der durchströmbare Gehäusekörper mindestens eine, mehr bevorzugt mehrere Querschnittsveränderungen auf. Dadurch wird einerseits das, den zylindrischen Gehäusekörper durchströmende, Fluid verwirbelt, andererseits die UV-Strahlung in unterschiedliche Richtungen reflektiert und damit gestreut. In a particularly advantageous embodiment, the flow-through housing body has at least one, more preferably a plurality of cross-sectional changes. As a result, on the one hand the fluid flowing through the cylindrical housing body is fluidized, on the other hand the UV radiation is reflected in different directions and thus scattered.
Die Querschnittsveränderungen können beispielsweise durch Vertiefungen auf der Außenseite des zylindrischen Gehäusekörpers gebildet sein, die entsprechende Ausbeulungen auf der Innenseite bewirken. Auch sind Einschnürungen oder ähnliche Querschnittsveränderungen denkbar. Es kann sich dabei um eine einzige Querschnittsveränderung oder um eine Vielzahl an Querschnittsveränderungen handeln. The cross-sectional changes may be formed for example by depressions on the outside of the cylindrical housing body, which cause corresponding bulges on the inside. Also, constrictions or similar cross-sectional changes are conceivable. It may be a single cross-sectional change or a variety of cross-sectional changes.
Gemäß einer weiteren vorteilhaften Ausführungsvariante weist die Desinfektionsanlage weiterhin eine am Einlass angeordnete Mischarmatur auf, über die ein Warm- und Kaltwasserzulauf anschließbar ist. So ist insbesondere bei sogenannten Point-of-use-Anwendungen nahezu keimfreies Wasser in der gewünschten Temperatur, die üblicherweise 5 - 75 °C beträgt, erhältlich.
In einer Ausführungsvariante ist der Einlass an einem ersten Ende und der Aus- lass an einem zweiten Ende des zylindrischen Gehäusekörpers angeordnet, wobei der Einlass umfangsseitig beliebig anordenbar ist. Beispielsweise ist der Einlass derart angeordnet, dass der Einlass und damit die Fließrichtung des Fluids in Richtung einer Körpermitte des zylindrischen Gehäusekörpers orientiert sind . According to a further advantageous embodiment variant, the disinfection system further comprises a mixing valve arranged at the inlet, via which a hot and cold water inlet can be connected. Thus, in particular in so-called point-of-use applications, almost germ-free water in the desired temperature, which is usually 5-75 ° C, available. In one embodiment variant, the inlet is arranged at a first end and the outlet is arranged at a second end of the cylindrical housing body, wherein the inlet can be arranged on the circumference as desired. For example, the inlet is arranged such that the inlet and thus the flow direction of the fluid are oriented in the direction of a body center of the cylindrical housing body.
Gemäß einer bevorzugten Ausführungsvariante ist der Einlass tangential angeordnet, so dass das zu desinfizierende Fluid wendeiförmig den ringförmigen Reaktionsraum, vom Einlass in Richtung Auslass, durchströmt. According to a preferred embodiment variant, the inlet is arranged tangentially, so that the fluid to be disinfected flows helically through the annular reaction space, from the inlet in the direction of the outlet.
In einer weiteren vorteilhaften Ausführungsvariante weist die Desinfektionsanlage weiterhin einen in dem zylindrischen Innenraum angeordneten durchströmbaren Kanal für ein Kühlfluid auf, wobei die LED-basierte UV-Lichtquelle vorzugsweise an einer Außenwand des durchströmbaren Kanals angeordnet ist. Hierdurch ist die LED-basierte UV-Lichtquelle kühlbar. In a further advantageous embodiment, the disinfection system further comprises a flow-through channel arranged in the cylindrical interior for a cooling fluid, wherein the LED-based UV light source is preferably arranged on an outer wall of the flow-through channel. This makes the LED-based UV light source coolable.
So kann in einer Ausführungsvariante der Einlass für das Fluid in den Gehäusekörper mit einem Auslass des durchströmbaren Kanals fluidisch verbunden werden, so dass die Desinfektionsanlage einen offenen Kühlkreislauf ausbildet. Das der Desinfektionsanlage zugeführte zu desinfizierende Fluid wird somit zunächst als Kühlfluid genutzt, bevor es anschließend der Desinfektion zugeführt wird. Thus, in one embodiment, the inlet for the fluid can be fluidically connected in the housing body with an outlet of the flow-through channel, so that the disinfection system forms an open cooling circuit. The disinfectant system supplied to be disinfected fluid is thus initially used as a cooling fluid before it is then supplied to the disinfection.
Alternativ ist der durchströmbare Kanal an einen geschlossenen Kühlkreislauf angeschlossen, welcher die LED-basierte UV-Lichtquelle rückseitig kühlt. Hierzu weist der Kühlkreislauf vorzugsweise ein Kühlaggregat auf, dass das Kühlfluid entsprechend einer gewünschten Temperatur temperiert. Alternatively, the flow-through channel is connected to a closed cooling circuit, which cools the LED-based UV light source back. For this purpose, the cooling circuit preferably has a cooling unit that keeps the cooling fluid at a desired temperature.
Der Kanal besteht dabei vorzugsweise aus einem Metall, wie beispielsweise Aluminium oder Edelstahl. The channel is preferably made of a metal, such as aluminum or stainless steel.
In einer anderen bevorzugten Ausführungsvariante sind der Einlass und der Auslass für das zu desinfizierende Fluid im Bereich eines ersten Endes des zylindrischen Gehäusekörpers angeordnet, wobei der zylindrische Innenraum sich vorzugsweise in Form eines Kanals koaxial innerhalb des zylindrischen Gehäusekör- pers erstreckt, wobei der Kanals mit dem Einlass für das zu desinfizierende Fluid fluidisch verbunden ist und im Bereich eines zweites Endes des zylindrischen Ge-
häusekörpers eine Öffnung aufweist. Die LED-basierte UV-Lichtquelle ist sodann auf der Außenwand des Kanals angeordnet. Das den Kanal durchströmende zu desinfizierende Fluid kühlt dabei die Rückseite der LED-basierten UV-Lichtquelle. Am entgegengesetzten Ende strömt das Fluid durch die Öffnung heraus und ge- langt in den ringförmigen Reaktionsraum, den es in Richtung Auslass durchströmt. Dabei trifft die von der LED-basierten UV-Lichtquelle emittierte und/oder reflektierte Strahlung auf das Fluid und desinfiziert dieses. In another preferred embodiment variant, the inlet and the outlet for the fluid to be disinfected are arranged in the region of a first end of the cylindrical housing body, the cylindrical interior preferably extending in the form of a channel coaxially inside the cylindrical housing body, the channel communicating with the housing Inlet for the fluid to be disinfected fluidly connected and in the region of a second end of the cylindrical Housing body has an opening. The LED-based UV light source is then placed on the outer wall of the channel. The fluid to be disinfected through the channel cools the back of the LED-based UV light source. At the opposite end, the fluid flows out through the opening and into the annular reaction space through which it flows in the direction of the outlet. The radiation emitted and / or reflected by the LED-based UV light source strikes the fluid and disinfects it.
In einer besonders vorteilhaften Weiterbildung ist die Öffnung wendeiförmig aus- gebildet, so dass das zu desinfizierende Fluid den ringförmigen Reaktionsraum wendeiförmig in Richtung des Auslasses durchströmt. In a particularly advantageous development, the opening is helically formed, so that the fluid to be disinfected flows through the annular reaction space in the form of a helix in the direction of the outlet.
Die Außenwand des Kanals kann weiterhin vorzugsweise mit einem Schutzelement versehen sein. Beispielsweise kann die Außenwand des Kanals mit einer Kunststoffschicht überzogen sein, in die die LED-basierte UV-Lichtquelle eingebettet ist. The outer wall of the channel can furthermore preferably be provided with a protective element. For example, the outer wall of the channel may be covered with a plastic layer in which the LED-based UV light source is embedded.
Zur besseren mechanischen Stabilität oder als Kratzschutz kann der aus einem Silizium-basierten Glas hergestellte zylindrische Gehäusekörper weiterhin mit einer Schutzschicht, beispielsweise aus einem Kunststoff, versehen sein. For better mechanical stability or as scratch protection, the cylindrical housing body produced from a silicon-based glass can furthermore be provided with a protective layer, for example made of a plastic.
Abweichend von der geometrischen Gestaltung des zylindrischen Gehäusekörpers sind auch andere Formen denkbar, z. B. quadratisch, rechteckig sowie jede andere technisch herstellbare Geometrie. Auch kann der Gehäusekörper in Form eines Pianarreaktors ausgebildet sein. Deviating from the geometric design of the cylindrical housing body and other shapes are conceivable, for. As square, rectangular and any other technically manufacturable geometry. Also, the housing body may be formed in the form of a Pianarreaktors.
Gemäß einem weiteren Aspekt betrifft die vorliegende Erfindung zudem ein Verfahren zur Desinfektion von Fluiden, wobei in einem ersten Schritt ein zu desinfizierendes Fluid, vorzugsweise zu desinfizierendes Wasser, in die erfindungsge- mäße Desinfektionsanlage eingeleitet wird und das Fluid in einem weiteren Schritt mittels UV-Strahlung desinfiziert wird, so dass ein desinfiziertes Fluid erhalten wird . According to a further aspect, the present invention also relates to a method for disinfecting fluids, wherein in a first step, a fluid to be disinfected, preferably to be disinfected water, is introduced into the inventive disinfection system and the fluid in a further step by means of UV radiation is disinfected so that a disinfected fluid is obtained.
Nachfolgend wird die vorliegende Erfindung anhand von Ausführungsbeispielen näher erläutert. Diese Ausführungsbeispiele sind beispielhaft und nicht einschränkend zu verstehen und sollen den Fachmann in die Lage versetzen, die
Erfindung auszuführen. Es wird darauf hingewiesen, dass die in den Ausführungsbeispielen genannten technischen Merkmale, insbesondere technischen Mittel, einzeln und auch in Kombination miteinander vom Fachmann zur Weiterbildung der erfindungsgemäßen Gegenstände herangezogen werden können. Es zeigen : The present invention will be explained in more detail below with reference to exemplary embodiments. These embodiments are to be understood as illustrative and not restrictive and are intended to enable those skilled in the art to To carry out invention. It should be noted that the technical features mentioned in the exemplary embodiments, in particular technical means, individually and also in combination with one another can be used by the person skilled in the art for the further development of the objects according to the invention. Show it :
Figur 1 eine stark vereinfachte Prinzipdarstellung einer erfindungsgemäßen Desinfektionsanlage im Längsschnitt, Figur 2 einen vergrößerten Ausschnitt eines Bereichs A aus Figur 1, 1 is a greatly simplified schematic representation of a disinfection system according to the invention in longitudinal section, Figure 2 shows an enlarged section of a region A of Figure 1,
Figur 3 eine zweite Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage im Längsschnitt mit einem offenen Kühlsystem, Figur 4 eine dritte Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage im Längsschnitt mit einem geschlossenen Kühlsystem, 3 shows a second embodiment of the disinfection system according to the invention in longitudinal section with an open cooling system, FIG. 4 shows a third variant of the disinfection system according to the invention in longitudinal section with a closed cooling system,
Figur 5 eine vierte Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage im Längsschnitt, und Figure 5 shows a fourth embodiment of the disinfection system according to the invention in longitudinal section, and
Figur 6 eine fünfte Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage im Längsschnitt. Figure 6 shows a fifth embodiment of the disinfection system according to the invention in longitudinal section.
Figur 1 zeigt eine stark vereinfachte Prinzipdarstellung einer Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage 1 für zu desinfizierende Fluide im Längsschnitt aufweisend einen im Wesentlichen zylindrisch ausgebildeten Gehäusekörper 10 aus einem UV-transparentem Glas 11 (Fig. 2) mit einem Einlass 12 und einem Auslass 13. Wie in der Figur 1 dargestellt, ist der Einlass 12 an einem ersten Ende des zylindrischen Gehäusekörpers 10 und der Auslass 13 an einem, dem ersten Ende gegenüberliegenden, zweiten Ende angeordnet. FIG. 1 shows a greatly simplified schematic illustration of a variant of the inventive disinfection system 1 for fluids to be disinfected in longitudinal section, comprising a substantially cylindrically shaped housing body 10 made of a UV-transparent glass 11 (FIG. 2) with an inlet 12 and an outlet 13 1, the inlet 12 is disposed at a first end of the cylindrical housing body 10 and the outlet 13 at a second end opposite the first end.
Der Einlass 12 ist grundsätzlich umfangsseitig beliebig anordenbar, in der vorliegenden Ausführungsvariante jedoch derart angeordnet, dass der Einlass 12 und damit die Fließrichtung des Fluids in Richtung einer Körpermitte des zylindrischen Gehäusekörpers 10 orientiert sind . In einer alternativen Ausführungsvariante ist der Einlass 12 auch tangential anordenbar, so dass das zu desinfizierende Fluid
wendeiförmig einen ringförmigen Reaktionsraum 14, vom Einlass 12 in Richtung Auslass 13 durchströmen kann . In principle, the inlet 12 can be arbitrarily arranged on the circumference, but in the present embodiment it is arranged such that the inlet 12 and thus the flow direction of the fluid are oriented in the direction of a body center of the cylindrical housing body 10. In an alternative embodiment, the inlet 12 can also be arranged tangentially, so that the fluid to be disinfected helically an annular reaction space 14, from the inlet 12 in the direction of outlet 13 can flow through.
Innerhalb des Gehäusekörpers 10 umgibt der ringförmige Reaktionsraum 14 ei- nen zylindrisch ausgebildeten Innenraum 15, auf dessen Außenwand 15a eine LED-basierte UV-Lichtquelle 30 (nicht dargestellt) angeordnet ist. Die LED- basierte UV-Lichtquelle 30 besteht aus einer Vielzahl lichtemittierender-Dioden 31 (nicht dargestellt), die über die gesamte Fläche der Außenwand 15a des Innenraums 15 verteilt angeordnet sind . Within the housing body 10, the annular reaction space 14 surrounds a cylindrical interior 15, on whose outer wall 15a an LED-based UV light source 30 (not shown) is arranged. The LED-based UV light source 30 is composed of a plurality of light emitting diodes 31 (not shown) distributed over the entire surface of the outer wall 15 a of the inner space 15.
In einer besonders bevorzugten Ausführungsvariante kann der Innenraum 15 mit den auf der Außenwand 15a angeordneten lichtemittierenden-Dioden 31 sowie weiteren elektrischen Komponenten, wie beispielsweise elektrische Leitungen, als separate Einheit ausgebildet werden, die aus dem Gehäusekörper 10 heraus- nehmbar und somit auch austauschbar ist. In a particularly preferred embodiment variant, the interior space 15 with the light-emitting diodes 31 arranged on the outer wall 15a and further electrical components, such as electrical lines, can be formed as a separate unit, which can be removed from the housing body 10 and thus also exchanged.
Weiterhin weist der Gehäusekörper 10 auf seiner Außenwand 16 eine nach innen gerichtete Aluminium-basierte Verspiegelung 17, beispielsweise in Form einer reflektierenden Beschichtung, auf (siehe Fig . 2) . Durch die Verspiegelung 17 wird das von der LED-basierten UV-Lichtquelle 30 emittierte UV-Licht, das in der Figur 2 exemplarisch mittels eines Strahlengangs 40 gezeigt ist, nach Durchtritt durch das UV-transparente Glas 11 zurück in den ringförmigen Reaktionsraum 14 reflektiert. Das zu desinfizierende Fluid, beispielsweise zu desinfizierendes Wasser, strömt durch den Einlass 12 in den Gehäusekörper 10 beziehungsweise in den ringförmigen Reaktionsraum 14 hinein und wird dort mit UV-Licht bestrahlt. Die spezifische Wellenlänge des ausgesendeten UV-Lichts liegt dabei bevorzugt in einem Wellenlängenbereich von 200 bis 500 nm, mehr bevorzugt im Wellenlängenbe- reich von 265 - 280 nm oder 400 - 410 nm . Furthermore, the housing body 10 has on its outer wall 16 an inwardly directed aluminum-based mirror coating 17, for example in the form of a reflective coating (see FIG. 2). As a result of the mirror coating 17, the UV light emitted by the LED-based UV light source 30, which is shown by way of example in FIG. 2 by means of a beam path 40, is reflected back into the annular reaction space 14 after passing through the UV-transparent glass 11. The fluid to be disinfected, for example water to be disinfected, flows through the inlet 12 into the housing body 10 or into the annular reaction space 14, where it is irradiated with UV light. The specific wavelength of the emitted UV light is preferably in a wavelength range of 200 to 500 nm, more preferably in the wavelength range of 265-280 nm or 400-410 nm.
Figur 3 zeigt eine zweite Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage 1 im Längsschnitt, die weiterhin ein offenes Kühlsystem 2 und eine am Einlass 12 angeordnete Mischarmatur 50 umfasst.
Der Gehäusekörper 10 wird aus zwei zylindrischen Körpern gebildet, die einen ringförmigen Reaktionsraum 14 sowie einen hiervon durch eine Wand 15b getrennten Innenraum 15 ausbilden . Im Unterschied zu der ersten Ausführungsvariante (Figuren 1 und 2) ist der zylindrische Gehäusekörper 10 an einer Innen- wand 16a mit einer UV-Licht reflektierenden Beschichtung 17a, beispielsweise umfassend ePTFE, versehen . Ferner weist der Innenraum 15 weiterhin einen durchströmbaren zylindrischen Kanal 20 für ein Kühlfluid auf, der auf seiner Außenwand 21 die LED-basierte Lichtquelle 30 in Form von mehreren lichtemittie- renden-Dioden 31 umfasst. Die lichtemittierenden-Dioden 31 emittieren UV- Strahlung, die durch die UV-Licht transparente Innenraumwand 15a in den ringförmigen Reaktionsraum 14 hineinstrahlt und das den ringförmigen Reaktionsraum 14 durchströmende Fluid desinfiziert. FIG. 3 shows a longitudinal section of a second embodiment variant of the disinfection system 1 according to the invention, which further comprises an open cooling system 2 and a mixing valve 50 arranged at the inlet 12. The housing body 10 is formed from two cylindrical bodies which form an annular reaction space 14 and an inner space 15 separated therefrom by a wall 15b. In contrast to the first embodiment variant (FIGS. 1 and 2), the cylindrical housing body 10 is provided on an inner wall 16a with a UV-light-reflecting coating 17a, for example comprising ePTFE. Furthermore, the interior space 15 furthermore has a throughflowable cylindrical channel 20 for a cooling fluid, which comprises on its outer wall 21 the LED-based light source 30 in the form of a plurality of light-emitting diodes 31. The light-emitting diodes 31 emit UV radiation which radiates through the UV light-transparent interior wall 15a into the annular reaction space 14 and disinfects the fluid flowing through the annular reaction space 14.
Die am Einlass 12 angeordnete Mischarmatur 50 weist jeweils einen Anschluss für Kalt- und Warmwasser 51, 52 auf und kann an einer entsprechenden Entnahmestelle, als eine sog . Point-of-use-Anwendung genutzt werden, um beispielsweise Leitungswasser direkt vor der Entnahme zu desinfizieren . The mixing valve 50 arranged at the inlet 12 has in each case a connection for cold and hot water 51, 52 and can be at a corresponding extraction point, as a so-called. Point-of-use application can be used, for example, to disinfect tap water immediately prior to removal.
Wie in Fig . 3 dargestellt, wird der Kaltwasserzulauf 51 zunächst über den Kanal 20 geleitet. Dadurch, dass die lichtemittierenden-Dioden 31 der LED-basierten Lichtquelle 30 an der Außenwand 21 des Kanals 20 angeordnet sind, werden diese durch das den Kanal 20 durchströmende Fluid, insbesondere Leitungswasser, gekühlt. Figur 4 zeigt eine dritte Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage 1 im Längsschnitt, die weiterhin ein geschlossenes Kühlsystem 3 und eine am Einlass 12 angeordnete Mischarmatur 50 mit einem Anschluss für Kalt- und Warmwasser 51, 52 aufweist umfasst. Im Unterschied zu der in Fig . 3 gezeigten Ausführungsvariante weist der zylindrische Gehäusekörper 10 an seiner UV-Licht transparenten Außenwand 16 eine nach innen gerichtete Aluminium-basierte Verspiegelung 17 auf, die das von den lichtemittierenden-Dioden 31 emittierte Licht reflektiert. Weiterhin ist der im Innenraum 15 angeordnete zylindrische Kanal 20 an einen geschlossenes Kühlsys- tem 3 angeschlossen, welcher die lichtemittierenden-Dioden 31 rückseitig kühlt.
Hierzu weist das Kühlsystem 3 vorzugsweise ein Kühlaggregat 4 auf, dass das Kühlfluid entsprechend einer gewünschten Temperatur temperiert. As shown in FIG. 3, the cold water inlet 51 is first passed through the channel 20. Because the light-emitting diodes 31 of the LED-based light source 30 are arranged on the outer wall 21 of the channel 20, they are cooled by the fluid flowing through the channel 20, in particular tap water. Figure 4 shows a third embodiment of the disinfection system 1 according to the invention in longitudinal section, which further comprises a closed cooling system 3 and arranged at the inlet 12 mixing valve 50 having a connection for cold and hot water 51, 52 comprises. In contrast to the in Fig. 3, the cylindrical housing body 10 has on its UV light-transparent outer wall 16 an inwardly directed aluminum-based mirror coating 17, which reflects the light emitted by the light-emitting diodes 31. Furthermore, the cylindrical channel 20 arranged in the interior 15 is connected to a closed cooling system 3, which cools the light-emitting diodes 31 at the rear. For this purpose, the cooling system 3 preferably has a cooling unit 4, that the cooling fluid temperature corresponding to a desired temperature.
Eine weitere Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage 1 ist in Figur 5 gezeigt. A further embodiment variant of the disinfection system 1 according to the invention is shown in FIG.
Bei dem in Figur 5 gezeigten zylindrischen Gehäusekörper 10 sind der Einlass 12 und der Auslass 13 für das zu desinfizierende Fluid im Bereich eines ersten Endes des zylindrischen Gehäusekörpers 10 angeordnet. Im Unterschied zu den vorangegangenen Ausführungsbeispielen weist der zylindrische Gehäusekörper 10 mehrere Querschnittsveränderungen 18 auf, die innenseitig zu Ausbeulungen 19 führen . Diese können nahezu jede beliebige Form aufweisen, wesentlich ist, dass sie in dem ringförmigen Reaktionsraum 14 zu einer Verwirbelung des Fluids und zu einer Streuung des emittierten UV-Lichts durch Reflektion führen . In the case of the cylindrical housing body 10 shown in FIG. 5, the inlet 12 and the outlet 13 for the fluid to be disinfected are arranged in the region of a first end of the cylindrical housing body 10. In contrast to the preceding exemplary embodiments, the cylindrical housing body 10 has a plurality of cross-sectional changes 18, which lead to bulges 19 on the inside. These can have virtually any shape, it is essential that they lead in the annular reaction space 14 to a turbulence of the fluid and to a scattering of the emitted UV light by reflection.
Auf seiner UV-Licht transparenten Außenwand weist der Gehäusekörper 10 eine Aluminium-basierte Verspiegelung 17 auf, die das UV-Licht reflektiert. On its UV light-transparent outer wall, the housing body 10, an aluminum-based mirror coating 17, which reflects the UV light.
Wie in den zuvor gezeigten Ausführungsbeispielen, erstreckt sich der Innenraum 15 in Form eines zylindrischen Kanals 20 koaxial innerhalb des zylindrischen Gehäusekörpers 10, so dass ein ringförmiger Reaktionsraum 14 gebildet wird . As in the embodiments previously shown, the inner space 15 in the form of a cylindrical channel 20 extends coaxially within the cylindrical housing body 10, so that an annular reaction space 14 is formed.
Die lichtemittierenden-Dioden 31 sind auf der Außenwand 15a des Kanals 20 angeordnet, so dass das den Kanal 20 durchströmende zu desinfizierende Fluid die Rückseite der Dioden 31 kühlt. The light-emitting diodes 31 are arranged on the outer wall 15 a of the channel 20, so that the fluid to be disinfected through the channel 20 cools the rear side of the diodes 31.
Das zu desinfizierende Fluid wird durch den zylindrischen Kanal 20 in die Desinfektionsanlage 1 eingeleitet. Am zum Einlass 12 gegenüber angeordnetem Ende weist der Kanal 20 eine Öffnung 22 auf, über die das den Kanal 20 durchströ- mende Fluid in den ringförmigen Reaktionsraum 14 einströmt und in Richtung Auslass 13 durchströmt. Dabei trifft die von der LED-basierten UV-Lichtquelle 30 emittierte UV-Strahlung auf das Fluid und desinfiziert dieses. The fluid to be disinfected is introduced through the cylindrical channel 20 into the disinfection system 1. At the end arranged opposite the inlet 12, the channel 20 has an opening 22, via which the fluid flowing through the channel 20 flows into the annular reaction space 14 and flows through in the direction of the outlet 13. The UV radiation emitted by the LED-based UV light source 30 strikes the fluid and disinfects it.
In einer besonders vorteilhaften Weiterbildung ist die Öffnung 22 wendeiförmig ausgebildet, so dass das zu desinfizierende Fluid den ringförmigen Reaktionsraum 14 wendeiförmig in Richtung des Auslasses 13 durchströmt.
In Figur 6 ist eine fünfte Ausführungsvariante der erfindungsgemäßen Desinfektionsanlage 1 im Längsschnitt gezeigt. Im Unterschied zu der in Figur 5 gezeigten Ausführungsvariante ist die Außenwand 15a des Kanals 20 mit einem Schut- zelement 23, beispielsweise in Form einer Kunststoffschicht, versehen, in der die lichtemittierenden-Dioden 31 eingebettet sind .
In a particularly advantageous embodiment, the opening 22 is helical, so that the fluid to be disinfected flows through the annular reaction space 14 helically in the direction of the outlet 13. FIG. 6 shows a fifth embodiment variant of the disinfection system 1 according to the invention in longitudinal section. In contrast to the embodiment variant shown in FIG. 5, the outer wall 15a of the channel 20 is provided with a protective element 23, for example in the form of a plastic layer, in which the light-emitting diodes 31 are embedded.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Desinfektionsanlage 1 disinfection system
2 offener Kühlkreislauf 2 open cooling circuit
3 geschlossener Kühlkreislauf 3 closed cooling circuit
4 Kühlaggregat 4 refrigeration unit
10 zylindrischer Gehäusekörper 10 cylindrical housing body
11 UV-transparentes Glas 11 UV-transparent glass
12 Einlass 12 inlet
13 Auslass 13 outlet
14 ringförmiger Reaktionsraum 14 annular reaction space
15 Innenraum 15 interior
15a Außenwand des Innenraums 15a outer wall of the interior
15b Wand des Innenraums 15b wall of the interior
16 Außenwand des Gehäusekörpers 16 outer wall of the housing body
16a Innenwand des Gehäusekörpers16a inner wall of the housing body
17 Verspiegelung 17 mirroring
17a UV-Licht reflektierende Beschichtung 17a UV-reflective coating
18 Querschnittsveränderung 18 cross-sectional change
19 Ausbeulung 19 bulging
20 zylindrischer Kanal 20 cylindrical channel
21 Außenwand des Kanals 21 outer wall of the canal
22 Öffnung 22 opening
23 Schutzelement 23 protective element
30 LED-basierte UV-Lichtquelle 30 LED-based UV light source
31 lichtemittierende- Dioden 31 light-emitting diodes
40 Strahlengang 40 beam path
50 Mischarmatur 50 mixing valve
51 Kaltwasser 51 cold water
52 Warmwasser
52 hot water
Claims
Patentansprüche claims
1. Desinfektionsanlage (1) für zu desinfizierende Fluide, aufweisend : 1. Disinfection plant (1) for fluids to be disinfected, comprising:
einen im Wesentlichen zylindrischen Gehäusekörper (10) mit einem Einlass (12) und einem Auslass (13), wobei der zylindrische Gehäusekörper (10) innenseitig einen ringförmigen Reaktionsraum (14), der einen zylindrischen Innenraum (15) umgibt, sowie eine LED-basierte UV- Lichtquelle (30) zur Bestrahlung des den ringförmigen Reaktionsraum (14) durchströmenden zu desinfizierenden Fluids aufweist, wobei der zylindrische Gehäusekörper (10) a substantially cylindrical housing body (10) having an inlet (12) and an outlet (13), the cylindrical housing body (10) having on the inside an annular reaction space (14) surrounding a cylindrical interior (15) and an LED-based one UV light source (30) for irradiating the annular reaction space (14) flowing through to be disinfected fluid, wherein the cylindrical housing body (10)
i) aus einem UV-transparentem Glas besteht und auf seiner Außenwand (16) eine nach innen gerichtete Verspiegelung (17), oder ii) aus einem Material besteht ausgewählt aus der Gruppe Glas, Kunststoff und/oder Metall und auf seiner Innenwand (16a) eine UV- Licht reflektierende Beschichtung (17a) aufweist, i) consists of a UV-transparent glass and on its outer wall (16) an inwardly directed mirror coating (17), or ii) consists of a material selected from the group glass, plastic and / or metal and on its inner wall (16a) a UV-light reflective coating (17a),
und wobei die LED-basierte UV-Lichtquelle (30) and wherein the LED-based UV light source (30)
iii) in dem zylindrischen Innenraum (15), oder iii) in the cylindrical interior (15), or
iv) an einer Außenwand (15a) des zylindrischen Innenraums (15), kühlbar angeordnet ist. iv) is arranged to be cooled on an outer wall (15a) of the cylindrical inner space (15).
2. Desinfektionsanlage (1) nach Anspruch 1, wobei der zylindrische Gehäusekörper (10) mindestens eine, vorzugsweise mehrere Querschnittsveränderungen (18) aufweist. 2. Disinfection plant (1) according to claim 1, wherein the cylindrical housing body (10) has at least one, preferably a plurality of cross-sectional changes (18).
3. Desinfektionsanlage (1) nach Anspruch 1 oder 2, weiterhin aufweisend eine am Einlass (12) angeordnete Mischarmatur (50). 3. disinfection system (1) according to claim 1 or 2, further comprising a at the inlet (12) arranged mixing valve (50).
4. Desinfektionsanlage (1) nach einem der vorhergehenden Ansprüche, wobei der Einlass (12) an einem ersten Ende und der Auslass (13) an einem zweiten Ende des zylindrischen Gehäusekörpers (10) angeordnet ist. 4. disinfection system (1) according to any one of the preceding claims, wherein the inlet (12) at a first end and the outlet (13) at a second end of the cylindrical housing body (10) is arranged.
5. Desinfektionsanlage (1) nach Anspruch 4, wobei der Einlass (12) tangential angeordnet ist, so dass das zu desinfizierende Fluid den ringförmigen Reaktionsraum (14) wendeiförmig durchströmt.
5. Disinfection plant (1) according to claim 4, wherein the inlet (12) is arranged tangentially, so that the fluid to be disinfected flows through the annular reaction space (14) helically.
6. Desinfektionsanlage (1) nach einem der vorhergehenden Ansprüche, weiterhin aufweisend einen in dem zylindrischen Innenraum (15) angeordneten durchströmbaren Kanal (20) für ein Kühlfluid. 6. disinfection system (1) according to one of the preceding claims, further comprising a in the cylindrical interior (15) arranged through-flow channel (20) for a cooling fluid.
7. Desinfektionsanlage (1) nach Anspruch 6, wobei die LED-basierte UV- Lichtquelle (30) an einer Außenwand (21) des durchströmbaren Kanals7. disinfection system (1) according to claim 6, wherein the LED-based UV light source (30) on an outer wall (21) of the flow-through channel
(20) angeordnet ist, so dass die LED-basierte UV-Lichtquelle (30) durch das Kühlfluid kühlbar ist. (20) is arranged so that the LED-based UV light source (30) is cooled by the cooling fluid.
8. Desinfektionsanlage (1) nach Anspruch 6 oder 7, wobei der Einlass (12) mit einem Auslass (13) des durchströmbaren Kanals (20) fluidisch verbunden ist und einen offenen Kühlkreislauf (2) bildet. 8. disinfection system (1) according to claim 6 or 7, wherein the inlet (12) with an outlet (13) of the flow-through channel (20) is fluidly connected and forms an open cooling circuit (2).
9. Desinfektionsanlage (1) nach Anspruch 6 oder 7, wobei der durchströmbare Kanal (20) an einen geschlossenen Kühlkreislauf (3) angeschlossen ist. 9. disinfection system (1) according to claim 6 or 7, wherein the flow-through channel (20) to a closed cooling circuit (3) is connected.
10. Desinfektionsanlage (1) nach einem der vorhergehenden Ansprüche 1 bis 3, wobei der Einlass (12) und der Auslass (13) im Bereich eines ersten Endes des zylindrischen Gehäusekörpers (10) angeordnet sind. 10. Disinfection system (1) according to one of the preceding claims 1 to 3, wherein the inlet (12) and the outlet (13) in the region of a first end of the cylindrical housing body (10) are arranged.
11. Desinfektionsanlage (1) nach Anspruch 10, wobei der zylindrische Innenraum (15) sich in Form eines Kanals (20) koaxial innerhalb des zylindrischen Gehäusekörpers (10) erstreckt, wobei der Kanal (20) mit dem Einlass (12) fluidisch verbunden ist und im Bereich eines zweiten Endes des zylindrischen Gehäusekörpers (10) eine Öffnung (22) aufweist. 11. The disinfection system (1) according to claim 10, wherein the cylindrical interior (15) extends in the form of a channel (20) coaxially within the cylindrical housing body (10), wherein the channel (20) is fluidically connected to the inlet (12) and in the region of a second end of the cylindrical housing body (10) has an opening (22).
12. Desinfektionsanlage (1) nach Anspruch 11, wobei die Öffnung (22) wendeiförmig ausgebildet ist, so dass das zu desinfizierende Fluid den ringförmigen Reaktionsraum (14) wendeiförmig in Richtung des Auslasses (13) durchströmt. 12. Disinfection system (1) according to claim 11, wherein the opening (22) is helical, so that the fluid to be disinfected flows through the annular reaction space (14) helically in the direction of the outlet (13).
13. Desinfektionsanlage (1) nach Anspruch 11 oder 12, wobei die Außenwand13. disinfection system (1) according to claim 11 or 12, wherein the outer wall
(21) des Kanals (20) mit einem Schutzelement (23) versehen ist. (21) of the channel (20) is provided with a protective element (23).
14. Desinfektionsanlage (1) nach einem der vorhergehenden Ansprüche 1 bis 13, wobei der zylindrische Gehäusekörper (10) außenseitig mit einer Schutzschicht versehen ist. 14. disinfection system (1) according to any one of the preceding claims 1 to 13, wherein the cylindrical housing body (10) is provided on the outside with a protective layer.
15. Verfahren zur Desinfektion von Fluiden umfassend die Schritte:
i) Bereitstellen einer Desinfektionsanlage (1) nach einem der Ansprüche 15. A method of disinfecting fluids comprising the steps of: i) providing a disinfection system (1) according to one of the claims
1 bis 14, 1 to 14,
ii) Einleiten des zu desinfizierenden Fluids, und ii) introducing the fluid to be disinfected, and
iii) Desinfizieren des Fluids.
iii) disinfecting the fluid.
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DE102017117324.2A DE102017117324A1 (en) | 2017-07-31 | 2017-07-31 | Disinfection plant for liquids |
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WO2022179699A1 (en) * | 2021-02-26 | 2022-09-01 | Kolbenschmidt Pierburg Innovations Gmbh | Disinfection apparatus |
DE102021215097A1 (en) * | 2021-12-30 | 2023-07-06 | Robert Bosch Gesellschaft mit beschränkter Haftung | Device for water treatment, operating method |
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WO2016008806A1 (en) * | 2014-07-18 | 2016-01-21 | Nestec S.A. | Apparatus for purifying liquid by ultraviolet light irradiation |
CN204671608U (en) * | 2015-05-21 | 2015-09-30 | 胡芳 | A kind of UV LED liquid steriliser |
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AU2021240845B2 (en) * | 2020-03-25 | 2023-09-21 | Hytecon Ag | Device for disinfecting a fluid |
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