A fan for air pollution prevention includes a main body, a blower, a filtering and cleaning assembly, and a gas detection module. The main body is configured to form a flow-guiding path. The blower is disposed in the flow-guiding path to guide air convection. The filtering and cleaning assembly is disposed in the flow-guiding path to filter and clean the air pollution source in the air guided by the blower. The gas detection module is disposed in the flow-guiding path to detect the air pollution source and transmit an gas detection data.

A fan for air pollution prevention includes a main body, a blower, a filtering and cleaning assembly, and a gas detection module. The main body is configured to form a flow-guiding path. The blower is disposed in the flow-guiding path to guide air convection. The filtering and cleaning assembly is disposed in the flow-guiding path to filter and clean the air pollution source in the air guided by the blower. The gas detection module is disposed in the flow-guiding path to detect the air pollution source and transmit an gas detection data.

A handheld air purifier may include a suction body provided with a suction surface having a first and second frame, a fan to suction air, and a filter to filter suctioned air, a bending portion extending rearward from the suction body to bend upward, and a handle extending further from the bending portion and held by the user. The second frame may be provided behind the first frame and may include a protrusion that penetrates through the first frame to create a gap between the suction surface and a garment being treated to promote a free airflow through the handheld air purifier.

A handheld air purifier may include a suction body provided with a suction surface having a first and second frame, a fan to suction air, and a filter to filter suctioned air, a bending portion extending rearward from the suction body to bend upward, and a handle extending further from the bending portion and held by the user. The second frame may be provided behind the first frame and may include a protrusion that penetrates through the first frame to create a gap between the suction surface and a garment being treated to promote a free airflow through the handheld air purifier.

Disclosed is a method of filtering air in a closed work environment that includes placing a primary air filter assembly in the closed work environment, where the primary air filter assembly includes a first air input and a first air output. The first air output is poised to emit once-filtered air outside the closed work environment. The method also includes placing a secondary air filter assembly in the closed work environment, where the secondary air filter assembly includes a second air input and a second air output.

Disclosed herein are systems and methods for treating air.

An air conditioning system includes a first unit and a second unit. The space above the ceiling of each of a plurality of clean rooms is included in the chamber as a single space common to a plurality of the clean rooms. The first clean room is higher than the second clean room in air cleanliness.

Provided is a sneeze guard attachment for creating an air curtain between display food covered by a sneeze guard and a person. The device includes a panel, a frame affixed to the panel that creates a chamber between the panel and the sneeze guard, and a means for forcing air into the chamber. The chamber includes an open end, which allows the air to be forced out of the chamber in order to create an air curtain. The air curtain separates the display food contained in a food bar/food prep area from the consumer. The device can be retrofitted on any preexisting food shield or sneeze guard, and can be utilized with various types of display food, including food items found in buffets, salad bars, hot food bars, roller grills, made-to-order food operations, catering stands, roller grills, sandwich preparation areas, and the like.

The present disclosure concerns odorants or fragrances dispersing systems, more specifically a system designed for dispersing one or more odorant compositions from one or more odorant canisters that are incorporated within an air filter of an air conditioner system. The system is configured to permit dispensing of one or more odorants in a selective manner as per user-demand.

The present disclosure concerns odorants or fragrances dispersing systems, more specifically a system designed for dispersing one or more odorant compositions from one or more odorant canisters that are incorporated within an air filter of an air conditioner system. The system is configured to permit dispensing of one or more odorants in a selective manner as per user-demand.