A hand vacuum cleaner has an upper end, a lower end, an air flow passage, a main body with a handle, an air treatment chamber and a suction motor. The air treatment chamber has an air outlet, the air outlet comprising a rigid porous member and a filter media that is removably positionable in the rigid porous member. The air treatment chamber is moveable to an open position in which the air treatment chamber is emptyable, and the rigid porous member is moveable within the air treatment chamber to an open position in which the filter media is removable.

The present invention provides an improved dust control system for removing debris and particulate matter from a fouled air stream. The system may be incorporated into crop harvesting equipment to eliminate the dust pollution generated by conventional harvesting equipment. The dust control system may use a multi-stage air filtering process that employs inertial separation techniques to eliminate particulate matter from the fouled air, without the need for water or electrostatic mechanisms to capture the fine particulates in the fouled air.

The present invention provides an improved dust control system for removing debris and particulate matter from a fouled air stream. The system may be incorporated into crop harvesting equipment to eliminate the dust pollution generated by conventional harvesting equipment. The dust control system may use a multi-stage air filtering process that employs inertial separation techniques to eliminate particulate matter from the fouled air, without the need for water or electrostatic mechanisms to capture the fine particulates in the fouled air.

In some embodiments, an indoor air cleaning apparatus and a method for removing at least a portion of at least one type of gas from an indoor airflow are disclosed. The apparatus may comprise a cabinet; at least one sorbent bank comprising at least one cartridge; a fan assembly comprising at least one housing including at least one housing inlet and at least one housing outlet, at least one motor and at least one impeller; and a heating element configured to operate in at least one of two modes: an active mode and an inactive mode; and a controller configured to operate in at least two modes: an adsorption mode and a regeneration mode.

In some embodiments, an indoor air cleaning apparatus and a method for removing at least a portion of at least one type of gas from an indoor airflow are disclosed. The apparatus may comprise a cabinet; at least one sorbent bank comprising at least one cartridge; a fan assembly comprising at least one housing including at least one housing inlet and at least one housing outlet, at least one motor and at least one impeller; and a heating element configured to operate in at least one of two modes: an active mode and an inactive mode; and a controller configured to operate in at least two modes: an adsorption mode and a regeneration mode.

A cleaner of the present disclosure comprises: a suction part; a main body comprising a body and a body cover for opening and closing the lower side of the body, the body comprising a cyclone part for separating dust from dust masses suctioned through the suction part and a dust container for storing the dust separated by the cyclone part; a handle part coupled to the main body; a filter part disposed inside the body, and filtering air, separated from the dust in the cyclone part; a movable part capable of moving inside the body along a space between the outside of the filter part and the inner circumferential surface of the body; an operation part disposed at the outside of the main body to move the movable part; and a delivery part penetrating through the main body, and connecting the movable part to the operation part.

A cleaner of the present disclosure comprises: a suction part; a main body comprising a body and a body cover for opening and closing the lower side of the body, the body comprising a cyclone part for separating dust from dust masses suctioned through the suction part and a dust container for storing the dust separated by the cyclone part; a handle part coupled to the main body; a filter part disposed inside the body, and filtering air, separated from the dust in the cyclone part; a movable part capable of moving inside the body along a space between the outside of the filter part and the inner circumferential surface of the body; an operation part disposed at the outside of the main body to move the movable part; and a delivery part penetrating through the main body, and connecting the movable part to the operation part.

A surface cleaning apparatus having an air flow path; a suction motor positioned in the air flow path; an air treatment chamber provided in the air flow path; and a porous filter provided in the air treatment chamber and including an outlet passage from the air treatment chamber. An air impermeable impact wall in the air treatment chamber is opposed to an inlet into the air treatment chamber. At least a portion of the impact wall or a deflecting portion of a wall defining part of the front end of the air treatment chamber imparts a circular flow to air entering the air treatment chamber.

A surface cleaning apparatus having an air flow path; a suction motor positioned in the air flow path; an air treatment chamber provided in the air flow path; and a porous filter provided in the air treatment chamber and including an outlet passage from the air treatment chamber. An air impermeable impact wall in the air treatment chamber is opposed to an inlet into the air treatment chamber. At least a portion of the impact wall or a deflecting portion of a wall defining part of the front end of the air treatment chamber imparts a circular flow to air entering the air treatment chamber.

A form of crossflow filtration particle separator which receives a particle laden moving fluid surrounded by a clear moving fluid at a proximal end, and separates the particles into a collection zone, or collector, in response to vortices created by diagonal slits and baffles located from the center of the particle separator to its distal end. The filter operates horizontally in a small amount of space without use of physical filter media or the need of a high pressure flow, while allowing delicate particles to be separated without damage. Particle collection structures allow the separated particles to be carried away in a separate flow.