A vehicle air-conditioning apparatus includes a filter case configured to accommodate a filter, and a filter cover configured to couple to an open upper end of the filter case. The filter case defines an inner space configured to accommodate the filter therein and having the open upper end to receive and discharge the filter therethrough. The inner space is inclined with respect to a vertical direction to allow the filter to be received into and discharged from the filter case in an inclined state. The filter cover includes a fixing protrusion protruding from a lower surface of the filter cover facing the inner space of the filter case and being configured to press and fix the filter in the inner space.

This application provides a wall-mounted air purifier, including a casing, a filter mounted in the casing, and a fan mounted in the casing. The casing is provided with an air inlet and an air outlet, and the air outlet is located at the position corresponding to the outlet of the fan, the filter is located between the air inlet and the fan, an ultraviolet light source is also mounted in the casing, and the ultraviolet light source is arranged between the air inlet and the fan. The wall-mounted air purifier provided in the present application filters and purifies the air by providing a filter in the casing; and an ultraviolet light source is mounted in the casing to sterilize and disinfect the gas entering the air inlet and purify the air, improve air purification capacity.

An air filter arrangement (A) includes at least two frames removably attached to each other, each one of the at least two frames delimiting one of at least two spaces/volumes (V1, V2, V3) and all of the at least two frames together defining an air flow path (V1-V2-V3) passing through each one of the at least two adjacent/contiguous spaces/volumes (V1, V2, V3), wherein the space/volume (V1, V2, V3) of one frame of the at least two frames includes a first air filter (F1), the space/volume (V1, V2, V3) of another frame of the at least two frames includes a second air filter (F2), and the space/volume (V1, V2, V3) of one frame of the at least two frames includes an air moving unit (M1). A combined air filter arrangement (CA) may include at least two such air filter arrangements.

A filtration unit for aspirating infectious aerosols and spray droplets expelled from a patient's mouth is disclosed. The filtration unit has a housing defining an air inlet; an articulated tube assembly fluidly connected to the air inlet; a hood connected to the tube assembly; a fan disposed in the lower portion of the housing; and at least one filter disposed in the housing vertically above the fan and fluidly between the air inlet and at least one air outlet defined in the filtration unit. During operation of the fan, air flows sequentially through the hood, then through the articulated tube assembly, then through the air inlet into the housing, then through the at least one filter, and then out of the housing via the at least one air outlet. A method of using the filtration unit is also disclosed.

A filtration device is provided, configured to be assembled between a tube seat and an air diffuser of a ventilation system, including: a main body, at least one filter and at least one light source. The main body includes an air inlet connected with the tube seat, an air outlet connected with the air diffuser and a shielding portion blocking between the air inlet and the air outlet. The shielding portion defines at least one passage. The at least one filter is disposed on the main body and corresponds to the at least one passage. The at least one filter has a photocatalyst material disposed thereon. An illumination area of the at least one light source corresponds to the at least one passage. A distance between the at least one light source and the at least one filter is smaller than or equal to 100 mm.

Air cleaner assemblies, related methods, components therefor, and features thereof are described. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. In some examples, a filter cartridge for an air cleaner includes a media pack extending along a longitudinal axis between opposite inlet and outlet flow ends and defining an outer perimeter with opposite straight sides and a first curved end. The filter cartridge can include a seal arrangement circumscribing the media pack outer perimeter, wherein a portion of the seal arrangement extends beyond a first plane defined by the media pack outlet flow end and a portion of the seal arrangement is disposed between the first plane and a second plane defined by the media pack inlet flow end, wherein the seal arrangement is aligned along a third plane disposed at an oblique angle to the first and second planes.

A connection arrangement for fixing a lid to a filter housing and to a filter element, by which an insertion opening in the filter housing can be closed, includes a holding element on the filter element and a locking element on the lid. The holding element can be fixed by a contact surface for contacting the locking element in a recess of the filter housing. The holding element has a latching geometry with which it can be latched in the recess of the filter housing. The locking element is a shaft with a bolt rod and a handle part. The shaft is guided through the lid such that the lid and the filter element in the latching position can, by the bolt rod and a contact surface formed as a ramp on the holding element, which engage with one another by turning the locking element, be spanned against each other.

There is described a filter assembly (2) comprising a filter housing (15) and a removable filter cartridge (16) arranged and/or arrangeable within the filter housing (15). The filter assembly (2) comprises an expelling device configured to exert an expelling force onto the filter cartridge (16) when being arranged within the filter housing (15) for at least partially directing the filter cartridge (16) out of the filter housing (15) and a control device controllable into a locking configuration for blocking the filter cartridge (16) within the filter housing (15) and/or for counter-acting against the expelling force and an unlocking configuration for allowing the expelling force to at least partially expel the filter cartridge (16) from the filter housing (15). The control device comprises at least a first interaction element (20) and a second interaction element (21) interacting and/or being configured to interact with one another with the control device being controlled into the locking configuration. The first interaction element (20) and the second interaction element (21) are configured such that the interaction between the first interaction element (20) and the second interaction element (21) is interrupted and/or released with the control device being controlled into the unlocking configuration and the filter cartridge (16) is provided with the first interaction element (20) and the filter housing (15) is provided with the second interaction element (21).

An adjustable filter track system a filter track having a recess configured to receive a filter, and a frame having a first coupling feature configured to couple to the filter track in a first configuration and a second coupling feature configured to couple to the filter track in a second configuration, where the filter track and the frame are configured to hold the filter in place within the recess, and where the filter track is adjustable between the first configuration and the second configuration to accommodate different thicknesses of the filter.

An air filtration ceiling fan apparatus includes a ceiling fan unit and an air filtration unit. The ceiling fan unit includes a motor and a plurality of fan blades operably coupled to the motor. The air filtration unit includes a filter element and a filter fan configured to move air through the filter element. The ceiling fan unit is operably connected to the air filtration unit to form the air filtration ceiling fan, and the air filtration ceiling fan is configured to attach to a ceiling.