The present disclosure relates to a dust cup assembly and a handheld cleaner having the same, the dust cup assembly includes a casing having a central chamber, a dedusting chamber and a dust collecting chamber, wherein the central chamber is configured to have an upright columnar shape and comprises an air exhaust chamber and a mounting chamber in communication with each other in an up-and-down direction, the dedusting chamber is configured to have a closed annular cross section and surrounds the air exhaust chamber by one circle, the dust collecting chamber is located below the dedusting chamber, has a non-closed annular cross section and surrounds the mounting chamber by less than a circle; a negative pressure device, in which wherein at least a majority of the negative pressure device is provided in the mounting chamber and used to suck airflow from the environment into the casing; and a dedusting device provided in the dedusting chamber to remove dust from the sucked airflow.

A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet; a suction motor provided in the air flow path; and a cyclone bin assembly comprising first and second stage cyclones. The first stage cyclone is provided in the air flow path and comprises a first stage cyclone chamber having a first stage second end wall that is spaced from a first stage first end wall. The second stage cyclone is provided in the air flow path downstream of the first stage cyclone and comprises a second stage cyclone chamber having a second stage second end wall that is spaced from a second stage first end wall. The first stage second end wall and the second stage second end wall are concurrently openable and the second stage second end wall may be moveable separately from the first stage second end wall.

A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet; a suction motor provided in the air flow path; and a cyclone bin assembly comprising first and second stage cyclones. The first stage cyclone is provided in the air flow path and comprises a first stage cyclone chamber having a first stage second end wall that is spaced from a first stage first end wall. The second stage cyclone is provided in the air flow path downstream of the first stage cyclone and comprises a second stage cyclone chamber having a second stage second end wall that is spaced from a second stage first end wall. The first stage second end wall and the second stage second end wall are concurrently openable and the second stage second end wall may be moveable separately from the first stage second end wall.

A fluid separator includes a body, an inlet, a first outlet and/or a second outlet. The first outlet may include a vortex finder that may have a convergent-divergent configuration. The second outlet may include or may be connected to a pressure relief valve. At least a portion of the pressure relief valve may be disposed in the vortex finder. The pressure relief valve may be disposed entirely outside of the vortex finder. The vortex finder may include a divergent section and a convergent section. In embodiments, the divergent section may be at least twice as long as the convergent section, a taper angle of the convergent section may be at least twice as large as a taper angle of the divergent section, and/or an axial length of a portion of the vortex finder extending into the body may be at least 1.5 times a diameter of the inlet.

A fluid separator includes a body, an inlet, a first outlet and/or a second outlet. The first outlet may include a vortex finder that may have a convergent-divergent configuration. The second outlet may include or may be connected to a pressure relief valve. At least a portion of the pressure relief valve may be disposed in the vortex finder. The pressure relief valve may be disposed entirely outside of the vortex finder. The vortex finder may include a divergent section and a convergent section. In embodiments, the divergent section may be at least twice as long as the convergent section, a taper angle of the convergent section may be at least twice as large as a taper angle of the divergent section, and/or an axial length of a portion of the vortex finder extending into the body may be at least 1.5 times a diameter of the inlet.

A filter (10) has a port block (13) provided with: an inflow port (11) to which compressed air is supplied; and an outflow port (12) from which purified compressed air flows out. A filter container (14) is attached to the port block (13), and an element assembly (30) is disposed inside the filter element (31). The element assembly (30) has: a filter element (31); and an air guide member (41) provided inside the filter element (31). The compressed air filtered through the filter element (31) is guided to an inner surface of the air guide member (41) through a slit (46).

A separator apparatus is described for separating liquids and solids from a gas. The separator apparatus includes a reverse flow cyclone comprising a cylindrical section, a conical section, and a top, the cylindrical section having a feed inlet, the top having a gas outlet, and the conical section having a reject outlet at the bottom thereof. An axial cyclone is disposed in the cylindrical section, the axial cyclone oriented with a first end located proximate to the top of the apparatus and a second end opposite the first end, the axial cyclone having a tapered entrance fixture at the second end thereof and having a wall with a plurality of openings located between the first end of the axial cyclone and a midpoint of the axial cyclone. A drain plate is coupled to the cylindrical section below the openings of the axial cyclone.

A system and method are provided in at least one embodiment to process water to produce gas that can be separated into at least two gas flows using a water treatment system having a disk-pack rotating in it to cause out gassing from the water. In a further embodiment, the method and system use the gas released from the water to produce substantially fresh water from the processed salt water.

A system and method are provided in at least one embodiment to process water to produce gas that can be separated into at least two gas flows using a water treatment system having a disk-pack rotating in it to cause out gassing from the water. In a further embodiment, the method and system use the gas released from the water to produce substantially fresh water from the processed salt water.

In at least one embodiment, the invention provides a retrofit for existing water treatment systems where the retrofit includes a particulate separator with a connection member and a discharge module. In a further embodiment, the invention includes a water treatment system combined with at least one of the following: a particulate separator, a supplementary inlet, and a waveform disk-pack turbine.