The present invention provides a surgical smoke removing device, which includes a smoke removing apparatus adapted to be connected to an application apparatus. The smoke removing apparatus includes an air cleaner, a stage, and a controller. The air cleaner has an inlet to suck in air, and an outlet to blow out clean air. The stage is configured to move the outlet of the air cleaner, such that the outlet targets at an emission source and/or a breathing zone of a user. The controller is connected to the air cleaner and the stage.

An air flow controller for an air cleaner and an air cleaner are provided. The air flow controller may include a fan, and a housing, the fan being provided in the housing and the housing being movable from an initial horizontal position in which the air flow controller directs air flow in a vertical direction to an inclined position in which the air flow controller directs air flow in a diagonal direction.

An air flow guiding structure for a pulse filter cartridge configured to include a hollow filter media pack, said air flow guiding structure extending from a first end to a second end and including a cage, said air flow guiding structure being configured to be positioned inside a hollow filter media pack of an pulse air filter cartridge, and said air flow guiding structure including at least one air flow guiding vane arranged at least partially within an interior volume of the cage, which vane is configured to guide of an air flow directed into the air filter cartridge through the cage and the filter media pack during use. The disclosure further relates to an air filter cartridge.

An air purifying system may include at least three air cleaners or purifiers capable of independently operating and a docking station to support the at least three air purifiers. Since the air purifiers may be separated or stacked together on the docking station, the air purifying system may be operated in various states desired by a user.

An air flow controller for an air cleaner and an air cleaner are provided. The air flow controller may include a fan, and a housing, the fan being provided in the housing and the housing being movable from an initial horizontal position in which the air flow controller directs air flow in a vertical direction to an inclined position in which the air flow controller directs air flow in a diagonal direction.

A duct filter box device including a filter box member and a duct collar member. The filter box member is in fluid communication with a supply air passage from an air handler unit. Moreover, the filter box member includes at least one filter element for filtering air particles from the supply air. The duct collar member is attached to the filter box member and is in fluid communication with the filtered supply air passing through the filter element. The duct collar member is attached to a supply duct channel for distributing the filtered air to one or more supply vents.

An air cleaner assembly (100) for an internal combustion engine, has a housing (10) with at least one intake air inlet and at least one intake air outlet (14) formed in the housing wall (18) for supplying an intake air to the internal combustion engine, at least one filter element disposed within the housing (10) for filtering the intake air, separating a rough air side from a clean air side inside the housing (10), and at least one flow straightener insert (20) comprising a body structure (40) with a hydrocarbon absorbing medium (30) disposed at the clean air side of the filter element. The at least one outlet (14) accommodates the at least one flow straightener insert (20).

When drawing down drinking water stored in an enclosed reservoir, air must be utilized to displace the drawn-down drinking water in order to ensure an acceptable level of drinking water outflow. If the intake air is not clean, or if debris is carried by the intake air into the reservoir tank, contamination of the drinking water may commence. Such contamination or build-up of unwanted particulates is obviously not desirable. The reservoir inlet air cleaning system serves to prevent potentially contaminating materials carried by the atmosphere from entering the reservoir tank. The system is scalable to reservoirs of all sizes, and thus may be customized for a particular use or for a particular location. An exemplary embodiment of the reservoir inlet air cleaning system may include a filtration unit, an air conduit, a means for controlling air intake so that other potential points of air inlet are closed off, means for controlling both condensate accumulation and contamination in the air conduit (and the reservoir tank), and means for preventing partial vacuum conditions and over-pressure conditions within the reservoir tank (or the air conduit) so as to avoid damage that may be caused by partial vacuum conditions and over-pressure conditions.

An air cleaner is provided. The air cleaner may include at least one air cleaning module including a fan, a filter and an inlet through which air is suctioned into the filter; an air flow controller configured to be movably disposed on the at least one air cleaning module and including an air flow control fan to control a flow of the air discharged from the at least one air cleaning module. The air flow controller may be movable from a first position at which the air is discharged in an upward direction to a second position at which the air is discharged in a diagonally upward direction.

An air purifier capable of adjusting wind directions according to an embodiment of the present invention comprises: a housing having an air outlet port on one side thereof; an air guide having a front end portion disposed at the center of the air outlet port such that the air outlet port becomes a ring shape and a rear end portion extending in a direction toward the other surface of the housing and coupled to the inside of the housing so as to be rotatable in a direction inclined with respect to the air release direction of the air outlet port; and a rotation-restraining portion for restraining the rotation of the air guide by elastically supporting the air guide on the housing.