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.

A crisper drawer for a refrigerator having a refrigerated compartment is disclosed. The crisper drawer includes a plurality of side walls defining a storage chamber, an opening in a side wall to provide fluid communication between the storage chamber and the refrigerated compartment, and a multi-function filter cassette configured to be positioned within the opening. The multi-function filter cassette includes a first filter configured to remove contaminants from a first air flow within the refrigerated compartment, a second filter configured to remove contaminants and/or moisture from a second air flow within the storage chamber, and a central wall configured to prevent fluid communication between the refrigerated compartment and the storage chamber.

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 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.

A filtration system for a ventilation hood includes a first filter and a second filter, operatively disposed in series. The first filter is configured to be mounted within the ventilation hood, and has an air inlet, an air outlet, and a grease outlet. The second filter includes a filter material with an upstream surface and a downstream surface, an upstream housing element abutting the upstream surface of the filter material, and a downstream housing element abutting the downstream surface of the filter material. The housing elements include openings, and hold the filter material in compression.

A purification device for disinfecting and filtering intake air is disclosed. The purification device comprises a housing provided with a number of inlet perforations for allowing the intake air to enter the housing and a number of air outlet perforations for allowing air purified by the purification device to leave the housing. The purification device moreover comprises a fan arranged inside the housing to suck the intake air into the housing and blow the purified air out of the housing. The purification device further comprises an ultraviolet radiation lamp arranged inside the housing to irradiate the intake air. The purification device also comprises a high-efficiency particulate air (HEPA) filter arranged to filter the intake air before the intake air leaves the housing as purified air. The filter comprises a plurality of pleats arranged in such a manner that the angle between adjacent pleats is 30 degrees or less.

A filter screen rail module, a cleaning member, an indoor unit of an air conditioner, and an air conditioner are provided. The filter screen rail module is applied to the indoor unit of the air conditioner. The indoor unit of the air conditioner includes a face frame defining an air inlet. The filter screen rail module is disposed adjacent to the air inlet. The filter screen rail module is separable from the face frame. The filter screen rail module is provided with a guiding space, in which the filter screen moves.

An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner. The housing can have a window to allow visual inspection of the internal component of the housing and to determine visually whether a filter element is installed therein.

Disclosed are a modularized dust collector system and a control method thereof. In the system, an air inlet and guide device is in communication with a filter device, and comprises a dust inlet channel, a dust guide plate and an airflow uniform-distribution plate; the filter device comprises a dust collector dust-air box and a dust-removing filter bag, and the filter device is of an integrated drawer-type push-pull structure as a whole; an air outlet device is in communication with the filter device, and the air outlet device comprises a dust collector purified air box and an air outlet channel; an ash-removing device is arranged inside the dust collector purified air box; and an ash collecting device is in communication with the filter device, and the ash collecting device has an upper region being provided with an ash hopper, and a lower region therein being provided with an ash conveying mechanism.

A ventilation assembly and an air conditioning apparatus are provided. The ventilation assembly includes: a volute, a surface of the volute being provided with a mounting port; a filter assembly arranged in the mounting port or in a portion of the volute adjacent to the mounting port; and a sealing member arranged with the mounting port or with the portion of the volute adjacent to the mounting port, and configured to seal a gap between the filter assembly and the mounting port.