# US 2014/0150276 A1 · Laundry machine having a drying function > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150276 A1 - Document ID: US20140150276A1 - Status: Published application - Kind: A1 - Application number: 14/173,892 - Filed: 2014-02-06 - Published: 2014-06-05 - Earliest claimed: 2009-05-28 - Assignees: LG Electronics Inc. - Inventors: Ig Geun KWON; Sangwook HONG; Youngsuk KIM; Hyunseok SEO - Web page: https://patentgrep.com/patent/US20140150276A1 ## CPC - 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 29/005: {the other separate apparatus being a drying appliance} - D06F 58/22: Lint collecting arrangements - D06F 58/26: Heating arrangements, e.g. gas heating equipment (D06F58/18 takes precedence) - F26B 21/003: {Air or gas filters} - D06F 37/22: in machines with a receptacle rotating or oscillating about a horizontal axis - D06F 37/267: {Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups (D06F37/206 takes precedence)} - D06F 39/088: {Liquid supply arrangements} - D06F 39/12: Casings; Tubs - D06F 58/04: Details (controlling or regulating devices D06F34/00) - D06F 58/24: Condensing arrangements - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES - F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27) ## Abstract The present invention relates to a laundry machine having a drying function for drying an object to be dried, especially clothes. In the laundry machine according to one embodiment of the present invention, lint and the like that may be contained in the hot air are removed by the filter, whereby the lint and the like can be prevented from being piled on the duct. Also, the filter is placed in a way that it is exposed into the tub, whereby the filter can be cleaned automatically while it is being driven. ## Claims ### Claim 1 A combo washer dryer, comprising: a tub to contain wash water, the tub having a hot air inlet and a hot air outlet; a drum rotatably provided in the tub; a heater and a fan to generate hot air; a duct to guide hot air to the hot air inlet; a filter assembly to filter air discharged through the hot air outlet and introduced into the duct; and a filter cleaning device to supply cleaning water to the filter assembly, wherein the filter assembly comprises: a filter housing provided between the hot air outlet and the duct; a filter provided at the filter housing to filter air; and a cleaning water dispersion device provided at the filter housing to disperse cleaning water over the filter. ### Claim 2 (depends on 1) The combo washer dryer according to claim 1, wherein the cleaning water dispersion device comprises a collision face provided at or on the filter housing such that cleaning water collides with the collision face. ### Claim 3 (depends on 2) The combo washer dryer according to claim 2, wherein the collision face is integrally provided at or on the filter housing. ### Claim 4 (depends on 3) The combo washer dryer according to claim 3, wherein the collision face comprises a bar shaped rib. ### Claim 5 (depends on 4) The combo washer dryer according to claim 4, wherein the bar shaped rib is formed at a central portion of the filter. ### Claim 6 (depends on 3) The combo washer dryer according to claim 3, wherein the filter cleaning device supplies cleaning water to the collision face. ### Claim 7 (depends on 1) The combo washer dryer according to claim 1, wherein the filter cleaning device supplies cleaning water to the cleaning water dispersion device provided at the filter housing to disperse cleaning water over the filter from a side of the filter housing. ### Claim 8 (depends on 1) The combo washer dryer according to claim 1, wherein the filter cleaning device supplies cleaning water to the filter from a side opposite to a side of the filter facing the tub. ### Claim 9 (depends on 1) The combo washer dryer according to claim 1, wherein the cleaning water dispersion device comprises an injection body to inject the cleaning water supplied from the filter cleaning device to the filter. ### Claim 10 (depends on 9) The combo washer dryer according to claim 9, wherein the injection body injects the cleaning water from a side of the filter onto the filter. ### Claim 11 (depends on 9) The combo washer dryer according to claim 9, wherein the injection body comprises a shower nozzle. ### Claim 12 (depends on 1) The combo washer dryer according to claim 1, wherein the hot air inlet, the hot air outlet, the filter assembly, and the duct are arranged such that hot air supplied through the hot air inlet is circulated via the drum, the tub, the hot air outlet, the filter, and the duct. ### Claim 13 (depends on 1) The combo washer dryer according to claim 1, wherein the hot air outlet protrudes from an outer circumference of the tub. ### Claim 14 (depends on 13) The combo washer dryer according to claim 13, wherein the hot air outlet is provided at a rear of an upper circumference of the tub. ### Claim 15 (depends on 14) The combo washer dryer according to claim 14, wherein the hot air outlet is spaced from a perpendicular line passing through a central axis formed in a longitudinal direction of the tub by a predetermined distance. ### Claim 16 (depends on 13) The combo washer dryer according to claim 13, wherein the filter housing is removably provided at or in the hot air outlet. ### Claim 17 (depends on 13) The combo washer dryer according to claim 13, wherein the filter is fixed to a lower portion of the filter housing such that the filter is located in the hot air outlet. ### Claim 18 (depends on 13) The combo washer dryer according to claim 13, wherein the filter is provided at an inner circumference of the tub. ### Claim 19 (depends on 13) The combo washer dryer according to claim 13, wherein the filter is provided at an inner circumference of the tub such that the filter protrudes toward the drum. ### Claim 20 (depends on 1) The combo washer dryer according to claim 1, further comprising: a water supply hose to supply wash water to the tub, wherein the filter cleaning device comprises a branch hose that diverses from the water supply hose to supply cleaning water into the filter housing. ### Claim 21 A combo washer dryer, comprising: a drum to receive objects to be dried; a heater and a fan to generate hot air; an condensing device to that provides a space to receive the drum, the condensing device comprising a hot air inlet and a hot air outlet, wherein an outer circumference of the condensing device heat exchanges with external air through natural convection, and air moving to the hot air inlet is condensed at an inner circumference of the condensing device; a duct to guide hot air to the hot air inlet; a filter assembly to filter air discharged from the hot air outlet and introduced into the duct; and a filter cleaning device to supply cleaning water to the filter assembly, wherein the filter assembly comprises: a filter housing provided between the hot air outlet and the duct; a filter provided at the filter housing to filter air; and a cleaning water dispersion device provided at the filter housing to disperse cleaning water supplied from the filter cleaning device over the filter. ### Claim 22 (depends on 21) The combo washer dryer according to claim 21, wherein the condensing device comprises a tub to receive the drum, and wherein the tub is configured such that an outer circumference of the tub heat exchanges with external air through natural convection and air introduced into the tub through the hot air inlet is condensed at an inner circumference of the tub.