An air pre-filter module that is designed and configured to be used in conjunction with air filtration and air cleaning systems that use filters, including commercial and residential heating and air conditioning systems, motor vehicle heating and air conditioning systems, free standing air filtration or cleaning systems and vacuum cleaners that include filters or bagless vacuums. The air pre-filter modules are positioned upstream of conventional air filters and perturb the airflow entering the conventional air filters thereby improving the efficiency of the conventional air filters to remove airborne particles. The air pre-filter modules can include chemical agents that neutralize pathogens, adhesive coatings that trap particles, fragrance oils that add a scent to the filter air and/or fabric strips with loops or hooks that trap hair and other fibrous materials.

A cabin air filter for use in cabins of vehicles for air filtration and conditioning of indoor environment in the cabin. The cabin air filter includes a filter media encased in a frame and a fragrance formulation deposited on the filter media.

As an accessory to cannabis and other smokers, an increased capacity, environmental and ecological friendly, sustainable solution personal air filter is disclosed. The solution effectively and efficiently combines passive filter medium and properties of fluid mechanics to achieve the increased capacity. Additionally, a specific order of passive filter elements is provided to increase filtering efficiency. Wherever possible, biodegradable materials are employed such a biodegradable PLA polymers.

An air cleaner includes a case, an air inlet, an air outlet, a grill covering the air inlet to filter airborne oil droplets, a fan to suction air through the air inlet and discharge air out of the air outlet, a roll filter provided between the grill and the fan to filter oil mist, and a filter roller to cut the roll filter. The roll filter includes a roller and a filter sheet wound around the roller, and the filter sheet may be unwound to extend behind the grill. When the filter sheet becomes dirty, the roll filter is further unwound so that a clean section is provided behind the grill, and the filter cutter may cut off the dirty section. During cutting, a clamp holds down the filter sheet. The case includes a slit through which the dirty section of the filter sheet passes for discarding.

The present disclosure provides an exhaust system for litter boxes or animal enclosures and related methods. One such system comprises a litter box enclosure having an opening in a cover of the litter box enclosure; a duct conduit that is configured to mate a first end of the duct conduit to the opening of the litter box enclosure; an exhaust fan mechanism having an intake port and an output port, wherein the intake port is configured to mate with a second end of the duct conduit; an additional duct conduit having two ends, wherein a first of the two ends is configured to mate with the output port of the exhaust fan mechanism; and an air filter having an intake opening that is configured to mate with a second of the two ends of the additional duct conduit. Other systems and methods are also provided.

A food recycler can include a case having a case volume between 8.79 liters and 35 liters, a control system, a user interface in electrical communication with the control system, and a bucket being configured with a bucket volume, wherein a ratio of the bucket volume to the case volume is between 0.0717 and 0.2857. The recycler can include a motor in communication with the control system, the motor being configured adjacent at least in part to the bucket, a gearbox configured below the bucket and in mechanical communication with the motor, a filter system having at least one filter and configured to receive air from a top portion of the bucket and a drying component configured to remove water from waste food items.

A base platform carrying a bedding tray with a plurality of tray legs raising the bedding tray above the base platform to define an air channel between the base platform and the bedding tray. An air suction gap between a perimeter wall surrounding the bedding tray and a perimeter side surface of the bedding tray, wherein the air suction gap extends around an entire perimeter of the bedding tray. Airflow openings included in the bedding tray drawing air through the bedding tray downward into the air channel. A blower unit carried by the base platform drawing air downward through the bedding tray and the air suction gap into the air channel, wherein the air suction gap channels air downward from around the entire perimeter of the bedding tray and into the air channel underneath the bedding tray so that debris is drawn down around the sides of the bedding tray.

A replaceable air filter element has a multilayer filter medium panel configured for mounting on a reusable exoskeleton support frame. The exoskeleton support frame is installable on a flow face of the filter medium panel and is provided with U-shaped locking members configured to detachably engage with and mount the filter medium panel. The exoskeleton support frame is configured to be reused such that only the filter medium panel is replaced, thereby reducing the environmental waste and making for a “green” eco-friendly air filter element.

In accordance with the present disclosure a modular air treatment system is disclosed. The modular air treatment system includes a fan apparatus having a base to removably couple to at least one of an air filter and/or a humidifier, wherein the fan apparatus includes a fan body with at least one convex surface and a nozzle to output air along the at least one convex surface.

A food recycler can include a case having a case volume between 8.79 liters and 35 liters, a control system, a user interface in electrical communication with the control system, and a bucket being configured with a bucket volume, wherein a ratio of the bucket volume to the case volume is between 0.0717 and 0.2857. The recycler can include a motor in communication with the control system, the motor being configured adjacent at least in part to the bucket, a gearbox configured below the bucket and in mechanical communication with the motor, a filter system having at least one filter and configured to receive air from a top portion of the bucket and a drying component configured to remove water from waste food items.