IMPROVED AIR PURIFICATION AND DECONTAMINATION DEVICES, SYSTEMS, AND METHODS

    公开(公告)号:WO2022241466A1

    公开(公告)日:2022-11-17

    申请号:PCT/US2022/072303

    申请日:2022-05-13

    申请人: CHIRAYATH, Paul

    发明人: CHIRAYATH, Paul

    摘要: Air purification devices include an air inlet and outlet, upstream and downstream sections in air flow communication with the air inlet and outlet and a filter removably positioned between the upstream and downstream sections to filter at least pathogens from air being passed through the filter. One or more ultraviolet (UV) illuminating sources may be positioned in at least the upstream section proximate the filter to illuminate at least an upstream surface of the filter with sufficient UV radiation to kill viable pathogens that accumulate on the filter. One or more ozone generating sources may be positioned to generate ozone in sufficient concentrations to kill viable pathogens proximate the device. The UV illuminating sources and ozone generating sources may be positioned to provide a predetermined pressure drop across the sources and air flow pattern proximate the filter, and enable the filter to be removed without handling the sources.

    OUTDOOR AIR PURIFIER COMPRISING AT LEAST ONE FILTER ELEMENT AND USE OF A FILTER ELEMENT IN SUCH AN AIR PURIFIER

    公开(公告)号:WO2022268730A1

    公开(公告)日:2022-12-29

    申请号:PCT/EP2022/066747

    申请日:2022-06-20

    申请人: MANN+HUMMEL GMBH

    摘要: The invention relates to an outdoor air purifier (100), comprising a housing (102) comprising at least one housing part (104), wherein the housing (102) has at least one flow inlet (142) for outdoor air to be purified and at least one flow outlet (144) for cleaned air, a fan (150) with a standing rotational axis (152) arranged within the housing (102), wherein the at least one flow inlet (142) is arranged radially with regards to the rotational axis (152) of the fan (150), wherein the at least one outlet (144) is arranged axially with regards to the rotational axis (152) of the fan (150), at least one filter element (10, 30) that at least partially surrounds, in particular circumferentially, an inner clean air space (160) of the housing (102), wherein the fan (150) is displaced axially from a mounting base (110) of the housing (102) and is in fluid connection with the inner clean air space (160),wherein the at least one filter element (10, 30) extends essentially parallel to the rotational axis (152) of the fan (150).The invention further relates to a filter element (10, 30) and a use of a filter element (10, 30).

    SELF-CLEANING AIR FILTER SYSTEM
    5.
    发明申请

    公开(公告)号:WO2022029533A1

    公开(公告)日:2022-02-10

    申请号:PCT/IB2021/056508

    申请日:2021-07-19

    摘要: A method of operating a cleaning process on a filter in a vehicle air intake, comprises passing air through the filter from an upstream side to a downstream side, and providing an exhaust duct having an inlet end adjacent the upstream side of the filter and an outlet end adjacent a cooling fan of the vehicle arranged to draw air through the exhaust duct from the inlet end to the outlet end. In a periodic cleaning subroutine, the rotational speed of the cooling fan is increased (110) from a first speed to a second speed, whilst a pulse of pressurised fluid is applied (112, 116) to a downstream side of the filter, and the exhaust duct carries away (114, 118) material dislodged from the upstream side of the filter by the applied pulse, before the rotational speed of the fan is reduced (120) to its original level. The fan may be replaced by alternative devices for drawing air through the exhaust duct.

    DUST EXTRACTOR COMPRISING A DUST CYCLONE CONTAINER ADJACENT TO A FINE FILTER SECTION WITH A BATTERY POWERED BLOWER/FAN MOTOR

    公开(公告)号:WO2021251874A1

    公开(公告)日:2021-12-16

    申请号:PCT/SE2021/050535

    申请日:2021-06-04

    申请人: HUSQVARNA AB

    摘要: The present disclosure relates to dust extractor (1) comprising a dust cyclone container (3) having a contaminated portion downstream an air inlet (2) and a clean portion downstream the contaminated portion, and a dust separating part (9) there between. The contaminated portion is provided with a dust container (59). The dust extractor (1 ) comprises a fine filter section (12) arranged adjacent to the dust cyclone container (3) and having a contaminated section and a clean section downstream the contaminated section, and a fine filter part (15) is adapted to be provided between the contaminated section and the clean section. An air channel (47) runs between a clean side of the dust cyclone container (3) and a contaminated side of the fine filter part (15). The dust extractor also comprises a mobility section (66) comprising wheels and a blower/fan motor (10) for drawing air from the air inlet (2) through the dust extractor. The dust cyclone container (3) has a center axis (48) along its longitudinal extension, and the fine filter part (15) is provided at a radial distance from the dust cyclone container (3) along a plane (P) perpendicular to the center axis (48) of the dust cyclone container (3), the plane (P) coinciding with the dust cyclone container (3) and a portion of the fine filter part (15). The blower/fan motor (10) is adapted to be powered at least partly by at least one onboard battery (61 ), and preferably two batteries (61 ), wherein the at least one battery (61 ) is arranged to be received in at least one battery slot (62) provided in the fine filter section (12) or in the mobility section (66).