# US 11,305,220 B2 · Purification device for air purification and air purifier having same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,220 B2 - Document ID: US11305220B2 - Status: Granted - Kind: B2 - Application number: 17/160,276 - Filed: 2021-01-27 - Published: 2021-05-20 - Granted: 2022-04-19 - Earliest claimed: 2018-08-31 - Assignees: Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd.; Midea Group Co., Ltd. - Applicants: Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd.; Midea Group Co., Ltd. - Inventors: Yunqing Han; Tongsheng Wang; Hui Zhang - Web page: https://patentgrep.com/patent/US11305220B2 ## CPC - B01D 45/14: generated by rotating vanes, discs, drums or brushes - B01D 47/06: Spray cleaning - B01D 47/16: Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid - B01D 50/40: Combinations of devices covered by groups B01D45/00 and B01D47/00 - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A purification device comprising a housing provided with an air inlet and an air outlet and at least one purifying assembly rotatably arranged in a cavity inside the housing. A respective purifying assembly comprises a first rotary cylinder and a first rotary disk. The first rotary disk is connected downstream of the first rotary cylinder, and a portion of the first rotary disk is provided with a second mesh. The purification device further comprises a water inlet pipe including a water inflow end and a water discharge end that is provided with a plurality of circumferentially distributed water injection nozzles. The purification device further comprises a fan assembly including a fan and a motor. The fan is arranged downstream of the purifying assembly to drive air from the air inlet to the air outlet, and the motor is configured to drive the purifying assembly and the fan into rotation. ## Claims ### Claim 1 A purification device for purifying air, comprising: a housing provided with an air inlet and an air outlet, wherein a cavity communicating with the air inlet and the air outlet is defined in the housing; at least one purifying assembly rotatably arranged in the cavity and located between the air inlet and the air outlet, wherein a respective purifying assembly of the at least one purifying assembly comprises a first rotary cylinder and a first rotary disk, the first rotary cylinder is spaced apart from a side wall of the housing, a side wall of the first rotary cylinder is provided with a first mesh in a circumferential direction of the side wall of the first rotary cylinder, the first rotary disk is connected downstream of the first rotary cylinder, and a portion of the first rotary disk, which is located between the first rotary cylinder and the housing in a radial direction, is provided with a second mesh; a water inlet pipe comprising a water inflow end and a water discharge end, the water discharge end being provided with a plurality of circumferentially distributed water injection nozzles, and the water discharge end extending into the first rotary cylinder; and a fan assembly comprising a fan and a motor, the fan being arranged downstream of the purifying assembly to drive air to flow from the air inlet to the air outlet via the purifying assembly, and the motor being configured to drive the purifying assembly and the fan into rotation. ### Claim 2 (depends on 1) The purification device for purifying air according to claim 1, wherein the motor is arranged above the fan and is connected with the fan to drive the at least one purifying assembly and the fan to rotate synchronously. ### Claim 3 (depends on 2) The purification device for purifying air according to claim 2, wherein the fan is arranged above the first rotary disk and is fixedly connected with the first rotary disk. ### Claim 4 (depends on 2) The purification device for purifying air according to claim 2, wherein the motor has a motor shaft, and each of the at least one purifying assembly and the fan is connected with the motor shaft. ### Claim 5 (depends on 1) The purification device for purifying air according to claim 1, wherein the fan comprises a body and a plurality of fan blades, and the plurality of fan blades are distributed along a circumferential direction of the body and spaced apart from each other. ### Claim 6 (depends on 5) The purification device for purifying air according to claim 5, wherein the fan blades are arranged on a side wall of the body, and are located above a portion of the first rotary disk which is located between the housing and the body. ### Claim 7 (depends on 5) The purification device for purifying air according to claim 5, wherein the body is cylindrical, the body is coaxial with the first rotary disk and the first rotary cylinder, and a dimension of the body in the radial direction is the same as a dimension of the first rotary cylinder in the radial direction. ### Claim 8 (depends on 1) The purification device for purifying air according to claim 1, wherein each of an upper end and a lower end of the first rotary cylinder is formed as a closed structure, and a bottom wall of the first rotary cylinder is provided with an opening adapted to be passed by the water inlet pipe. ### Claim 9 (depends on 1) The purification device for purifying air according to claim 1, wherein the air outlet is arranged at a position higher than the air inlet, and the at least one purifying assembly is sequentially stacked in an up and down direction. ### Claim 10 (depends on 1) The purification device for purifying air according to claim 1, further comprising a capture member, wherein the capture member is rotatably arranged between the at least one purifying assembly and the fan assembly and comprises a second rotary cylinder and a second rotary disk, an outer circumferential wall of the second rotary cylinder is a cylindrical surface, the second rotary cylinder is spaced apart from the side wall of the housing, the second rotary disk is connected downstream of the second rotary cylinder, and a portion of the second rotary disk, which is located between the second rotary cylinder and the housing at least in the radial direction, is provided with a third mesh. ### Claim 11 An air purifier comprising a purification device for purifying air, wherein the purification device for purifying air comprises: a housing provided with an air inlet and an air outlet, wherein a cavity communicating with the air inlet and the air outlet is defined in the housing; at least one purifying assembly rotatably arranged in the cavity and located between the air inlet and the air outlet, wherein a respective purifying assembly of the at least one purifying assembly comprises a first rotary cylinder and a first rotary disk, the first rotary cylinder is spaced apart from a side wall of the housing, a side wall of the first rotary cylinder is provided with a first mesh in a circumferential direction of the side wall of the first rotary cylinder, the first rotary disk is connected downstream of the first rotary cylinder, and a portion of the first rotary disk, which is located between the first rotary cylinder and the housing in a radial direction, is provided with a second mesh; a water inlet pipe comprising a water inflow end and a water discharge end, the water discharge end being provided with a plurality of circumferentially distributed water injection nozzles, and the water discharge end extending into the first rotary cylinder; and a fan assembly comprising a fan and a motor, the fan being arranged downstream of the purifying assembly to drive air to flow from the air inlet to the air outlet via the purifying assembly, and the motor being configured to drive the purifying assembly and the fan into rotation. ### Claim 12 (depends on 11) The air purifier according to claim 11, wherein the motor is arranged above the fan and is connected with the fan to drive the at least one purifying assembly and the fan to rotate synchronously. ### Claim 13 (depends on 12) The air purifier according to claim 12, wherein the fan is arranged above the first rotary disk and is fixedly connected with the first rotary disk. ### Claim 14 (depends on 12) The air purifier according to claim 12, wherein the motor has a motor shaft, and each of the at least one purifying assembly and the fan is connected with the motor shaft. ### Claim 15 (depends on 11) The air purifier according to claim 11, wherein the fan comprises a body and a plurality of fan blades, and the plurality of fan blades are distributed along a circumferential direction of the body and spaced apart from each other. ### Claim 16 (depends on 15) The air purifier according to claim 15, wherein the fan blades are arranged on a side wall of the body, and are located above a portion of the first rotary disk which is located between the housing and the body. ### Claim 17 (depends on 15) The air purifier according to claim 15, wherein the body is cylindrical, the body is coaxial with the first rotary disk and the first rotary cylinder, and a dimension of the body in the radial direction is the same as a dimension of the first rotary cylinder in the radial direction. ### Claim 18 (depends on 11) The air purifier according to claim 11, wherein each of an upper end and a lower end of the first rotary cylinder is formed as a closed structure, and a bottom wall of the first rotary cylinder is provided with an opening adapted to be passed by the water inlet pipe. ### Claim 19 (depends on 11) The air purifier according to claim 11, wherein the air outlet is arranged at a position higher than the air inlet, and the at least one purifying assembly is sequentially stacked in an up and down direction. ### Claim 20 (depends on 11) The air purifier according to claim 11, wherein the purification device for purifying air further comprises a capture member, wherein the capture member is rotatably arranged between the at least one purifying assembly and the fan assembly and comprises a second rotary cylinder and a second rotary disk, an outer circumferential wall of the second rotary cylinder is a cylindrical surface, the second rotary cylinder is spaced apart from the side wall of the housing, the second rotary disk is connected downstream of the second rotary cylinder, and a portion of the second rotary disk, which is located between the second rotary cylinder and the housing at least in the radial direction, is provided with a third mesh.