# US 2020/0399820 A1 · Washing/drying machine with a device for cleaning an air filter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399820 A1 - Document ID: US20200399820A1 - Status: Published application - Kind: A1 - Application number: 17/007,737 - Filed: 2020-08-31 - Published: 2020-12-24 - Earliest claimed: 2014-12-30 - Assignees: Whirlpool EMEA S.p.A. - Applicants: Whirlpool Emea S.P.A. - Inventors: GIOVANNI BOMBARDIERI - Web page: https://patentgrep.com/patent/US20200399820A1 ## CPC - D06F 58/22: Lint collecting arrangements - B08B 3/02: Cleaning by the force of jets or sprays - B08B 3/04: Cleaning involving contact with liquid - D06F 25/00: Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air (control of washing or of washing and drying D06F33/00, D06F34/00; domestic laundry dryers D06F58/00) - D06F 39/083: {Liquid discharge or recirculation arrangements} - D06F 39/10: Filtering arrangements - D06F 58/10: Drying cabinets or drying chambers having heating or ventilating means - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES - B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL ## Abstract The invention relates to a washing/drying machine equipped with a filter cleaning device for removing filaments released by laundry items during the washing/drying cycle. The filter cleaning device comprises nozzles that spray water onto the sides of the filtering wall where filaments get deposited during circulation of air in the air circuit. ## Claims ### Claim 1 A washing/drying machine comprising: a chamber; a basket housed in said chamber for loading laundry to be treated; an air circuit for circulating air taken in from the chamber; and; a filter comprising: a cage-like structure having a geometry complimentary in shape to an intake port in the chamber and configured to be inserted in the intake port; a filtering wall arranged about the cage-like structure; and a crown comprising a plurality of water nozzles distributed about a periphery of the crown, the crown configured to connect to the cage-like structure for jetting water onto a side of the filter facing toward the chamber where filaments get deposited during circulation of air in the air circuit; the cage-like structure and the crown configured to be secured to the intake port. ### Claim 2 (depends on 1) The washing/drying machine of claim 1, wherein the cage-like structure comprises a cylindrical geometry. ### Claim 3 (depends on 1) The washing/drying machine of claim 1, wherein the crown comprises a cylindrical geometry. ### Claim 4 (depends on 1) The washing/drying machine of claim 1, wherein the air circuit comprising an intake channel, a delivery channel and a fan arranged between the intake channel and the delivery channel. ### Claim 5 (depends on 4) The washing/drying machine of claim 4, wherein the intake channel forms the intake port in communication with an aperture formed in a back wall of the chamber. ### Claim 6 (depends on 5) The washing/drying machine of claim 5, wherein the intake channel comprises a cylindrical geometry. ### Claim 7 (depends on 1) The washing/drying machine of claim 1, wherein water is jetted against the filtering wall tangential thereto. ### Claim 8 (depends on 1) The washing/drying machine to claim 1, further comprising a hydraulic circuit for supplying water to the plurality of water nozzles. ### Claim 9 (depends on 8) The washing/drying machine of claim 8, wherein the hydraulic circuit for recirculating water comes from the chamber and/or from the air circuit, to be supplied to the nozzles. ### Claim 10 (depends on 1) The washing/drying machine of claim 1, wherein the water nozzles are defined by a plurality of protrusions extending from and positioned around the periphery of the crown. ### Claim 11 (depends on 1) The washing/drying machine of claim 1, wherein the crown comprises one or more appendices extending from a base of the crown. ### Claim 12 (depends on 1) The washing/drying machine of claim 1, wherein the cage-like structure comprises at least one slot for engaging the one or more appendices of the crown. ### Claim 13 A washing/drying machine comprising: a chamber having an intake port; a basket housed in said chamber for loading laundry to be treated; an air circuit for circulating air taken in from the chamber; and; a filter comprising: a cage-like structure configured to be inserted in the intake port; a filtering wall arranged about the cage-like structure; and a crown comprising a plurality of water nozzles distributed about a periphery of the crown, the crown configured to securely connect to the cage-like structure for jetting water onto a side of the filter facing toward the chamber where filaments get deposited during circulation of air in the air circuit. ### Claim 14 (depends on 13) The washing/drying machine of claim 13, wherein the cage-like structure comprises a cylindrical geometry. ### Claim 15 (depends on 1) The washing/drying machine of claim 1, wherein the crown comprises a cylindrical geometry. ### Claim 16 (depends on 1) The washing/drying machine of claim 1, wherein the air circuit comprising an intake channel, a delivery channel and a fan arranged between the intake channel and the delivery channel. ### Claim 17 (depends on 16) The washing/drying machine of claim 16, wherein the intake channel forms the intake port in communication with an aperture formed in a back wall of the chamber. ### Claim 18 (depends on 17) The washing/drying machine of claim 17, wherein the intake channel comprises a cylindrical geometry. ### Claim 19 (depends on 13) The washing/drying machine of claim 13, wherein water is jetted against the filtering wall tangential thereto. ### Claim 20 (depends on 13) The washing/drying machine of claim 13, wherein the water nozzles are defined by a plurality of protrusions extending from and positioned around the periphery of the crown.