# US 10,441,916 B2 · Air purifier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,916 B2 - Document ID: US10441916B2 - Status: Granted - Kind: B2 - Application number: 15/744,070 - Filed: 2016-06-28 - Published: 2018-07-19 - Granted: 2019-10-15 - Earliest claimed: 2015-07-14 - Assignees: Guangzhou Merci Forest Environment Science and Technology Co., Ltd. - Applicants: Guangzhou Merci Forest Environment Science and Technology Co., Ltd. - Inventors: Zhuoquan Chen - Web page: https://patentgrep.com/patent/US10441916B2 ## CPC - B01D 53/1425: {Regeneration of liquid absorbents} - A01G 9/02: Receptacles, e.g. flower-pots or boxes (self-acting watering devices A01G27/00; hanging flower baskets, holders or containers for flower-pots A47G7/00); Glasses for cultivating flowers - A01G 27/005: {Reservoirs connected to flower-pots through conduits} - A61L 9/20: Ultraviolet radiation - B01D 46/0036: {by adsorption or absorption} - B01D 46/10: Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces - B01D 46/62: connected in series - B01D 47/022: {by using a liquid curtain (B01D47/06 takes precedence)} - B01D 50/60: Combinations of devices covered by groups B01D46/00 and B01D47/00 - B01D 53/1412: {Controlling the absorption process} - B01D 53/1487: {Removing organic compounds} - C02F 3/32: characterised by the animals or plants used, e.g. algae - C02F 3/348: {characterised by the way or the form in which the microorganisms are added or dosed} - C12M 37/02: {Filters} - F24F 8/175: using biological materials, plants or microorganisms - F24F 8/90: Cleaning of purification apparatus - A61L 2209/111: Sensor means, e.g. motion, brightness, scent, contaminant sensors - A61L 2209/134: Distributing means, e.g. baffles, valves, manifolds, nozzles - A61L 2209/14: Filtering means - B01D 53/1493: {Selection of liquid materials for use as absorbents} - B01D 53/185: {Liquid distributors} - B01D 2252/103: Water - B01D 2257/708: Volatile organic compounds V.O.C.'s - B01D 2258/06: Polluted air - B01D 2259/804: UV light - C02F 2103/18: from the purification of gaseous effluents - F24F 8/26: using ozone - Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters - 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) - A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12) - 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) - C12M: APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; {APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS} - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract Disclosed is an air purifier, which comprises a shell with an air inlet and an air outlet, an ecological purification system with a flowerpot assembly, a microorganism box and a water tank arranged in sequence, a filtering system, and a control system for carrying out control. The water of the ecological purification system flows through the filtering system to bring dust and VOCs adsorbed by the filtering system into the ecological purification system for purification. The flowerpot assembly comprises a flowerpot. The water of the water tank enters the flowerpot via a water inlet, and when the water level is higher than a water outlet, the water flows through the microorganism box and then enters the water tank, so as to form the water circulation. The air purifier is simple in structure, easy to operate and low in cost, and has a high purification efficiency for air pollutants, especially VOCs. ## Claims ### Claim 1 An air purifier, comprising: a shell provided with an air inlet and an air outlet; and further including: a control system, and an ecological purification system and a filtering system which are connected to the control system; water in the ecological purification system flowing through the filtering system, to bring dusts and VOCs adsorbed by the filtering system into the ecological purification system for purification, wherein the ecological purification system includes a flowerpot assembly configured for planting plants, a microorganism box configured for accommodating microorganisms and a water tank configured for holding water, arranged in sequence; wherein the flowerpot assembly includes a flowerpot provided with a water inlet and a water outlet; and the ecological purification system is provided with a following water circulation: water in the water tank enters the flowerpot via the water inlet of the flowerpot, and when a water level in the flowerpot is higher than the water outlet of the flowerpot, the water flows through the microorganism box via the water outlet of the flowerpot, and then enters the water tank. ### Claim 2 (depends on 1) The air purifier of claim 1, wherein the filtering system comprises a filtering layer including a primary filtering layer, a secondary filtering layer capable of adsorbing dusts and a water curtain capable of adsorbing VOCs and dusts, which are arranged in sequence between the air inlet and the air outlet; both ends of the water curtain being respectively in fluid communication with the water outlet of the flowerpot and the microorganism box. ### Claim 3 (depends on 2) The air purifier of claim 2, wherein the ecological purification system further comprises a water diverter assembly provided between the flowerpot and the water curtain, wherein the water diverter assembly is provided with at least one water outlet and at least one water inlet; the water inlet of the water diverter assembly is in fluid communication with the water outlet of the flowerpot, and the water outlet of the water diverter assembly is in fluid communication with the water curtain. ### Claim 4 (depends on 3) The air purifier of claim 3, wherein the microorganism box is provided therein with fillers which are capable of adsorbing dusts, VOCs and microorganisms; a drainage outlet is provided at the bottom of the water tank, the drainage outlet being detachably connected with a closing element matching therewith; the water curtain is formed by folding a water absorbent material and/or an antibacterial material; and the ecological purification system further includes a water pump connected to the control system, and a drawing pipe assembly connected with the water pump, and configured to introduce the water from the water tank to the water inlet of the flowerpot. ### Claim 5 (depends on 1) The air purifier of claim 1, wherein the flowerpot is further provided with an overflow hole positioned higher than the water outlet of the flowerpot; the ecological purification system further includes a return pipe assembly connected to the overflow hole of the flowerpot so as to introduce excessive water into the water tank when the water level in the flowerpot is higher than the overflow hole. ### Claim 6 (depends on 1) The air purifier of claim 1, wherein the air purifier further comprises a monitor connected to the control system and configured to monitor air quality. ### Claim 7 (depends on 1) The air purifier of claim 1, wherein the control system comprises a circuit board, a function key and a display. ### Claim 8 (depends on 1) The air purifier of claim 1, wherein the water outlet of the flowerpot is provided with a first filter screen configured for preventing the water outlet of the flowerpot from being blocked by plant roots. ### Claim 9 (depends on 1) The air purifier of claim 1, wherein the control system comprises a toppling switch configured for automatically cutting off the power when the air purifier is toppling. ### Claim 10 (depends on 1) The air purifier of claim 1, wherein the filtering system further comprises a fan device connected with the control system, and the fan device includes a wind rotor, an electric motor configured for driving the wind rotor and a wind guide tube guiding the wind caused by the rotating of the wind rotor to the air outlet. ### Claim 11 (depends on 10) The air purifier of claim 10, wherein the air purifier further comprises an ultraviolet lamp assembly provided between the wind rotor and the air outlet. ### Claim 12 (depends on 1) The air purifier of claim 1, wherein the flowerpot assembly further comprises a flowerpot support configured to support the flowerpot, a flowerpot sealing ring configured to seal the flowerpot and the flowerpot support, and a flowerpot cover configured to close the flowerpot; the water tank is provided with a water-tank separator configured to seal the water tank and further to prevent the water in the water tank from overflowing when the air purifier is toppling, and the water-tank separator is provided inside or on the top of the water tank, and hermetically connected with the water tank. ### Claim 13 (depends on 1) The air purifier of claim 1, wherein the air purifier is further provided with a water adding inlet configured for adding water from outside, the water adding inlet being provided with a second filter screen; the water adding inlet is in direct communication with the water tank through a water pipe assembly, or the water adding inlet is provided on the flowerpot, so that the water adding inlet is in fluid communication with the water tank by the communication between the water adding inlet and the flowerpot; and the water tank is provided with a water level sensor connected with the control system. ### Claim 14 (depends on 1) The air purifier of claim 1, wherein the flowerpot is of cone shape; the flowerpot is positioned above the air outlet, and purified air exhausted from the air outlet is blown upwards to the bottom and/or the outer surface of the flowerpot, leaving the purified air blocked to change the wind direction to form a turbulent flow. ### Claim 15 (depends on 1) The air purifier of claim 1, wherein an air outlet cover is provided on the air outlet; the air outlet cover is provided with a plurality of vents distributed in dots, and the purified air exhausted from the vents is blown to the bottom and/or the outer surface of the flowerpot.