A modular filtration device is composed of a modular docking plate having at least one quick disconnect plumbing coupling; at least one electrical connector; and at least one alignment feature for aligning and receiving a modular filter; and a modular filter composed of a docking face having: at least one quick disconnect plumbing coupling; at least one electrical connector; and at least one alignment feature that mates with an alignment feature of the modular docking plate to provide proper alignment of the filter with the docking plate, engagement of the quick disconnect plumbing couplings, engagement of the electrical connectors, and engagement of the locking mechanism. The modular filtration device comprises a locking mechanism to hold the filter in place during operation. A modular filtration system is composed of a plurality of the filtration devices.

The air filtration system for a box fan is a frame that couples to a box fan and holds an air filter adjacent to the box fan such that air drawn into the box fan must pass through the air filter. The front of the frame includes a fan mount that retains the fan in the frame using a press-fit. The rear of the frame comprises a filter mount that holds an air filter in the path of air flowing through the fan. The filter mount includes a top door that retains the filter and allow access to install and remove filters. In some embodiments, the air filtration system for a box fan may include a second fan mount to hold a second air filter.

A gel-sealed air supply box comprising an air inlet and a box body, wherein the box body is internally provided with a filter. A plurality of filter profiles that are sequentially connected are arranged on inner side surfaces of the box body, and a corner dust generating pipe is arranged between two filter profiles of the plurality of filter profiles. A dust distributing pipe is arranged at a top end of the plurality of filter profiles, and the dust distributing pipe is communicated with the corner dust generating pipe. A plurality of dust holes are formed in a top end of the dust distributing pipe. According to the disclosure, dust can be uniformly generated and a more precise detection result can be achieved.

An ambient air purifying device has a blower housing with air inlet and air outlet. In the blower housing, a flow generating device is arranged generating an air flow from air inlet to air outlet. Between air inlet and air outlet, a filter device is arranged with filter elements arranged relative to each other in a V shape. The blower housing has a servicing door through which the blower housing interior is accessible. The filter device has a filter element support held at the blower housing and supporting the filter elements. The filter element support is pivotably supported about an axis at the blower housing. The filter element support is transferrable from an operating state, in which it is completely inside the blower housing, into a servicing state, in which it projects at least partially through the servicing door from the blower housing, by pivoting about the axis.

A face mask having a positive air flow by use of an attached portable air purification unit. The device is used to filter and purify inhaled air, making it easier for individuals to comfortably wear a face mask for public health and safety. An outtake filter inhibits contaminated air from being expelled by the mask wearer. The portable air purifier is powered by means of rechargeable battery power using a USB connector, allowing static or dynamic use.

A food recycler can include a bucket with a certain configuration for processing waste food. A bucket includes an interior surface having thereon a set of projections. A grinding mechanism includes a first arm connected to a rotational member, the first arm having a first distal end adjacent to the interior surface of the bucket and that has notches that are complementary to the projections. A second arm has a second distal end also having notches complementary to projections. Waste food is processed with the grinding mechanism.

A dust collector includes an enclosure and a tube sheet separating filter and clean air compartments. The tube sheet forms a filter opening and a filter is located within the filter compartment and includes a filter flange having an air outlet aligned with said filter opening. The flange includes first and second alignment structures located on a first lateral side of the flange. A clamping assembly includes first and second filter clamps that are movable between a sealing position for sealing the filter flange against the tube sheet, and a release position. The first filter clamp engages the first alignment structure when in the sealing position. The second filter clamp engages the second alignment structure when in the sealing position. The dust collector includes means for moving the filter clamps between the sealing position and the release position.

A method for controlling display of information on a display device includes storing information corresponding to a broadcast program guide. When a signal is received based on activation of a specific key while the first broadcast program is displayed on a screen, information on the first broadcast program and information on a second program to be broadcast after the first broadcast program is detected. The first broadcast program is then displayed in a first region of the screen simultaneously with the information on the first broadcast program and the information on the second broadcast program in a second region of the screen.

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.

An air cleaner assembly is disclosed, along with related methods. In one aspect, the air cleaner assembly has a housing including a housing body and a removable cover that together define an interior volume for holding a filter cartridge. The housing body can include a first plurality of lugs, wherein each of the first plurality of lugs has a first engagement surface disposed at a first angle that is oblique to a rotational plane of the cover. A second plurality of lugs can be provided on the cover, wherein each of the second plurality of lugs has a second engagement surface disposed at the first angle. A lock mechanism can also be provided that is disposed on the cover, wherein the lock mechanism includes a lock member axially movable between a locked position and an unlocked position to selectively secure the cover to the housing body.