A dirt separator for a vacuum cleaner includes a chamber having an inlet through which dirt-laden fluid enters and an outlet through which cleansed fluid exits the chamber. A disc located at the outlet rotates about a rotational axis and comprises holes through which the cleansed fluid passes. The inlet is defined by an end of an inlet duct that extends within the chamber, and a separation distance between the centre of the inlet and the centre of the disc is no greater than the diameter of the inlet.

A surface cleaning apparatus comprises an air treatment chamber having a porous member at the air outlet. The air treatment chamber has a stationary portion and an openable portion, the openable portion is moveably mounted by a mount between a closed position in which the air treatment chamber is closed and an open position in which the air treatment chamber is open. The porous member is moveable concurrently with the openable portion. When the openable portion is in the closed position, the openable portion and the stationery portion abut along peripheral edges that extend along a length of the air treatment chamber sidewall.

A surface cleaning apparatus comprises an air treatment chamber having a porous member at the air outlet. The air treatment chamber has a stationary portion and an openable portion, the openable portion is moveably mounted by a mount between a closed position in which the air treatment chamber is closed and an open position in which the air treatment chamber is open. The porous member is moveable concurrently with the openable portion. When the openable portion is in the closed position, the openable portion and the stationery portion abut along peripheral edges that extend along a length of the air treatment chamber sidewall.

A surface cleaning apparatus comprises an air treatment chamber having a first end, an axially opposed second end, an axis extending between the first and second axially opposed ends and an axially extending air treatment chamber sidewall. The air treatment chamber air outlet is provided at the second opposed end and the first opposed end is moveably mounted between a closed position and an open position in which the air treatment chamber is open. The air treatment chamber has a stationary portion and an openable portion and the openable portion is moveably mounted between a closed position and an open position in which the air treatment chamber is open. When the openable portion is in the closed position, the openable portion and the stationery portion abut along peripheral edges that extend along a length of the air treatment chamber sidewall.

A cleaner includes: a suction motor that generates suction force; a dust separation unit that separates dust from air sucked by the suction force; a motor housing that covers the suction motor; a flow guide that surrounds an outer side of the motor housing and guides air discharged from the dust separation unit to the suction motor; and a body that forms an external appearance by surrounding the flow guide and guides air discharged from the suction motor together with the flow guide.

A hand vacuum cleaner has a cyclonic stage which comprises a stationary portion and an openable portion. The openable portion is rotatably mounted by a rotatable mount between a closed position in which a cyclone chamber is closed and an open position in which the cyclone chamber is open. The stationary portion comprises an upper portion of the first cyclonic stage and the openable portion comprises a lower portion of the first cyclonic stage. The rotatable mount is located at a rearward end of the openable portion.

Provided is a dust collector of a vacuum cleaner, the dust collector including a dust collecting casing including an air inlet, an air outlet, and a foreign substance discharge port, a cyclone module configured to separate foreign substances by inducing a swirling flow of air drawn in via the air inlet, and a discharge door switchable between an open position in which the foreign substance discharge port is opened and a closed position in which the foreign substance discharge port is closed, wherein the cyclone module includes a fixed part and a rotating part having a rotating state in which it is allowed to rotate with respect to the fixed part when the discharge door is in the open position and a locked state in which it is prevented from rotating with respect to the fixed part when the discharge door is in the closed position.

A hatch mechanism for a pre-separator 120, the mechanism comprising an aperture having a perimeter arranged in a plane, and at least three elongated obturator elements pivotably attached along the perimeter at respective hinge ends, each obturator element comprising a distal end arranged opposite to the hinge end along the extension direction of the obturator element, wherein adjacent obturator elements arranged along the perimeter are connected by foldable joining members arranged to guide the distal ends to a common intersection point distanced from the plane, whereby the obturator elements are arranged to fold about respective hinge ends to a position of mutual support to close the hatch mechanism.

A cleaner includes: a suction motor that generates suction force; a dust separation unit that separates dust from air sucked by the suction force; a motor housing that covers the suction motor; a flow guide that surrounds an outer side of the motor housing and guides air discharged from the dust separation unit to the suction motor; and a body that forms an external appearance by surrounding the flow guide and guides air discharged from the suction motor together with the flow guide.

The present invention provides a gas-liquid separator with enhanced performance and easy operation, capable of performing gas-liquid separation such as advanced defoaming or degassing, and with a structure that facilitates easy CIP cleaning and disassembly cleaning, allowing it to meet sanitary specifications.

This gas-liquid separator for gas-liquid separation performed by centrifugal force of an impeller mounted on a shaft which is supported by a bearing part and rotates in a casing comprises: the axial end of the impeller farther from the bearing part being positioned with clearance from the inner wall of the casing so as to slide on the inner wall of the casing; an exhaust outlet of the casing disposed in a position opposite the sliding impeller part; a vacuum device connected to the exhaust outlet; a discharge impeller part providing discharge force to the passing fluid formed around the axial end of the impeller; a discharge outlet of the casing disposed in a position opposite the discharge impeller part; and a suction inlet of the casing disposed in a position closer to the bearing part than the discharge outlet.