# US 2024/0197948 A1 · Keep-clean device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0197948 A1 - Document ID: US20240197948A1 - Status: Published application - Kind: A1 - Application number: 18/555,932 - Filed: 2022-03-21 - Published: 2024-06-20 - Earliest claimed: 2021-04-28 - Assignees: Virobuster International GmbH - Applicants: Virobuster International GmbH - Inventors: Fehmi Yigit - Web page: https://patentgrep.com/patent/US20240197948A1 ## CPC - A61L 9/20: Ultraviolet radiation - C02F 1/325: {Irradiation devices or lamp constructions} - A61L 2209/134: Distributing means, e.g. baffles, valves, manifolds, nozzles - A61L 2209/14: Filtering means - C02F 1/001: {Processes for the treatment of water whereby the filtration technique is of importance (C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00)} - C02F 2201/3222: Units using UV-light emitting diodes [LED] - C02F 2201/328: Having flow diverters (baffles) - C02F 2301/043: Treatment of partial or bypass streams - 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 (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) ## Abstract The invention relates to a purification device for inactivating microorganisms, such as bacteria, germs, mold and/or viruses, present in a gaseous medium, in particular air, flowing through the purification device, with an irradiation device for UV irradiation, in particular UV-C irradiation, of the medium, wherein a guiding means flow-connected to the irradiation device is provided for supplying a partial flow of the flow of the medium flowing through the purification device to the irradiation device, wherein at least one further guiding means is provided for guiding a further partial flow and wherein the further guiding means does not open into the irradiation device and/or is guided past the irradiation device and/or is spatially separated and/or flow-separated from the irradiation device. ## Claims ### Claim 1 A purification device for inactivating microorganisms, such as bacteria, germs, mold and/or viruses, present in a gaseous medium, in flowing through the purification device, with an irradiation device—for UV irradiation of the medium, wherein a radiation source is provided in the irradiation device for irradiating the medium and/or the partial flow flowing through the irradiation device, wherein at least one radiation source is provided emitting UV radiation in a wavelength range from 250 to 285 nm, wherein a guiding means flow-connected to the irradiation device is provided for supplying a partial flow of the flow of the medium flowing through the purification device to the irradiation device, wherein at least one further guiding means is provided for guiding a further partial flow and wherein the further guiding means does not open into the irradiation device and/or is guided past the irradiation device and/or is spatially separated and/or flow-separated from the irradiation device. ### Claim 2 (depends on 1) The purification device according to claim 1, wherein a housing having an inlet and an outlet for the medium is provided, wherein the housing can be flowed through by the flow of the medium conducted through the purification device and/or wherein the irradiation device is arranged in the housing. ### Claim 3 (depends on 2) The purification device according to claim 2, wherein the guiding means fluidically connects the inlet to the irradiation device and/or wherein the further guiding means is fluidically connected to the inlet; wherein the further guiding means fluidically connects the inlet to the outlet and/or wherein the guiding means fluidically connects the inlet to the outlet. ### Claim 4 (depends on 1) The purification device according to claim 1, wherein a plurality of further guiding means is provided for conducting a plurality of further partial flows. ### Claim 5 (depends on 2) The purification device according to claim 2, wherein the inlet comprises a plurality of inlet openings and/or wherein the outlet has a plurality of outlet openings; wherein at least one inlet opening is associated with the guiding means and/or at least one further inlet opening is associated with the at least one further guiding means; and/or wherein at least one outlet opening is associated with the guiding means and/or at least one further outlet opening is associated with the at least one further guiding means. ### Claim 6 (depends on 2) The purification device according to claim 2, wherein an outlet means is provided which is flow-connected to the outlet, wherein the guiding means and/or the partial flow exiting from the irradiation device and the at least one further guiding means open into the outlet means for mixing the partial flow exiting from the irradiation device and the at least one further partial flow. ### Claim 7 (depends on 1) The purification device according to claim 1, wherein the purification device is designed in such a way that the partial flow emerging from the irradiation device has a higher velocity, by at least 20%, than the at least one further partial flow. ### Claim 8 (depends on 1) The purification device according to claim 1, wherein a filter device is arranged in the at least one further guiding means and wherein the filter device is designed in such a way that particles with a diameter greater than 1 μm are filtered out of the medium flow. ### Claim 9 (depends on 2) The purification device according to claim 2, wherein a prefilter is arranged upstream of the inlet and/or in the region of the inlet and/or in the guiding means, wherein the prefilter is designed in such a way that particles with a diameter greater than 1 μm are filtered out of the medium flow. ### Claim 10 (depends on 2) The purification device according to claim 2, wherein a blower device is provided for sucking in and/or blowing out the medium. ### Claim 11 (depends on 10) The purification device according to claim 10, wherein the blower device comprises a fan for generating the partial flow in the guiding means from the inlet to the irradiation device, to the outlet, and/or wherein the blower device comprises at least one further fan for generating the at least one further partial flow in the at least one further guiding means from the inlet to the outlet. ### Claim 12 (depends on 10) The purification device according to claim 10, wherein the blower device has an actuating means for controlling the volumetric flow of the partial flow guided into the guiding means and at least one further actuating means for controlling the volumetric flow of the at least one further partial flow guided into the at least one further guiding means. ### Claim 13 (depends on 1) The purification device according to claim 1, wherein the irradiation device is designed to treat a volumetric flow of the partial flow of at least 100 m3/h. ### Claim 14 (depends on 1) The purification device according to claim 1, wherein the purification device is designed in such a way that the volumetric flow of the partial flow guided through the guiding means has a proportion of at least 10% of the total volumetric flow of the medium flow flowing through the purification device. ### Claim 15 (depends on 12) The purification device according to claim 12, wherein a control device is provided for controlling, connecting, disconnecting and/or regulating the volumetric flow of the partial flow and/or of the at least one further partial flow, the control device being designed for controlling and/or regulating the actuating means and/or the at least one further actuating means. ### Claim 16 (depends on 7) The purification device according to claim 7, wherein the purification device is designed in such a way that the partial flow emerging from the irradiation device has a higher velocity, by at least 50%, than the at least one further partial flow. ### Claim 17 (depends on 8) The purification device according to claim 8, wherein the filter device is designed in such a way that particles with a diameter greater than 0.5 μm are filtered out of the medium flow. ### Claim 18 (depends on 12) The purification device according to claim 12, wherein the actuating means is a valve and/or a butterfly valve and the at least one further actuating means is a valve and/or a butterfly valve. ### Claim 19 (depends on 13) The purification device according to claim 13, wherein the irradiation device is designed to treat a volumetric flow of the partial flow of between 300 to 600 m3/h. ### Claim 20 (depends on 14) The purification device according to claim 14, wherein the purification device is designed in such a way that the volumetric flow of the partial flow guided through the guiding means has a proportion of between 30% and 50% of the total volumetric flow of the medium flow flowing through the purification device.