A handheld vacuum cleaner includes a main body with a handle extending along a handle axis. The handheld vacuum cleaner also includes a motor assembly positioned within the main body. The handle axis intersects the motor assembly. The handheld vacuum cleaner also includes a dirty air inlet positioned at a front of the handheld vacuum cleaner and extending along an inlet axis. In addition, the handheld vacuum cleaner includes a cyclonic chamber in fluid communication with the dirty air inlet and the motor assembly. The cyclonic chamber defines a separator axis. The inlet axis and the separator axis intersect to form an acute angle extending between the dirty air inlet and the cyclonic chamber. The inlet axis and the handle axis intersect to form an obtuse angle extending between the dirty air inlet and the handle.

Disclosed are an air duct assembly and a cleaning device. The air duct assembly includes a dirt collecting box, a filter, a cyclone separator and a fan. The dirt collecting box is provided with a dirt collecting cavity and the dirt collecting box is also provided with a dirt inlet and an air outlet communicated with the dirt collecting cavity. The dirt collecting cavity is provided with an air guiding structure, the filter is arranged in the air outlet, the cyclone separator is connected with the air outlet, and the fan is connected with the cyclone separator. The fan drives an air flow to enter into the dirt collecting cavity from the dirt inlet, and enter the cyclone separator from the air outlet after being guided by the air guiding structure, and then enter the fan from the cyclone separator.

A hand vacuum cleaner comprises a cyclone comprising a front end having a cyclone air inlet, a rear end having a cyclone air outlet and a cyclone axis of rotation extending between the front end and the rear end of the cyclone. A conical pre-motor filter is positioned rearward of the cyclone. The pre-motor filter has a front end that faces that faces towards the cyclone air outlet. A suction motor is positioned rearward of the pre-motor filter. The suction motor has an inlet end that faces towards a rear end of the pre-motor filter. A handle is provided at the rear end of the hand vacuum cleaner and is positioned rearward of the suction motor. The handle has an energy storage member housing, The cyclone axis of rotation and the suction motor axis of rotation are parallel, and the handle axis extends at an angle to the cyclone axis of rotation and the suction motor axis of rotation.

A discharge arrangement (120) for a comminution reactor assembly (100). The discharge arrangement (120) comprises a main chamber (202) extending along a main axis (124). The main chamber has an inlet (121) arranged to be fluidly connected to a comminution reactor (110) and an outlet (122) arranged opposite from the inlet (121) along the main axis (124) and closeable by a common material take-out valve (204). The main chamber (202) is arranged to support a fluid-material stream (123) along a helical path about the main axis (124) from the inlet (121) towards the outlet (122). The discharge arrangement (120) further comprises an airduct (206) arranged extending into the main chamber (202) at an acute angle (a) with respect to the main axis (124). The airduct (206) comprises an aperture arranged facing the outlet (122). Thereby, a portion (125) of the fluid-material stream (123) changes direction from the helical fluid-material stream (123) about the main axis (124) from the inlet (121) towards the outlet (122) to a helical flow inside the airduct (206).

Disclosed are a base station and a cleaning equipment. The base station includes: a first box defined with a sewage inlet for solid-liquid mixed garbage to enter the first box; a second box communicated with the first box, for receiving liquid garbage from the first box; a cyclone separator communicated with the first box; and a fan communicated with the cyclone separator, the fan is configured to drive an external airflow into the first box from the sewage inlet, and drive the external airflow to enter the fan after passing through the cyclone separator, such that the solid-liquid mixed garbage enters the first box through the sewage inlet.

A hand vacuum cleaner has an openable air treatment stage. The air treatment stage has a lower openable portion that is moveably mounted to a forward portion of the pre-motor filter housing.

A multiply redundant safety system that protects humans and assets while transfer(s)/fuelling of on road/off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles/vessels utilizing Compressed and or Liquefied Gas Fuels/compound(s). Utilizing Natural Gas Chemical Family of Hydrogen/Propane/ethane/ammonia/and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3)/ozone/hydrogen peroxide/peroxide/solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques/machine learning in combination with one or more sensors; in combination with one or more micro switches/actuator(s) combine to detect any leaks/fire(s)/or explosion hazards/vehicle motion/arc's, spark(s)/and other hazards for quickly mitigating/locking out/stopping fueling/gas/transfers/vehicle releasing system(s).

A multiply redundant safety system that protects humans and assets while transfer(s)/fueling of on road/off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles/vessels utilizing Compressed and or Liquefied Gas Fuels/compound(s). Utilizing Natural Gas Chemical Family of Hydrogen/Propane/ethane/ammonia/and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3)/ozone/hydrogen peroxide/peroxide/solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques/machine learning in combination with one or more sensors; in combination with one or more micro switches/actuator(s) combine to detect any leaks/fire(s)/or explosion hazards/vehicle motion/arc's, spark(s)/and other hazards for quickly mitigating/locking out/stopping fueling/gas/transfers/vehicle releasing system(s).

A filter device has a housing plate with a sleeve extending along a longitudinal axis perpendicular to the housing plate. The sleeve guides fluid containing particles along an inner sleeve surface to separate particles from the fluid and discharge the particles via a discharge window of the sleeve. An immersion tube plate opposite the housing plate has an immersion tube projecting coaxially into the sleeve for outflow of the fluid. The immersion tube has a sealing and centering section about an outer circumference of the immersion tube that forms a sealing surface parallel to the longitudinal axis and radially seals with an inner surface of the sleeve. The sealing and centering section extends about the immersion tube to provide coaxial alignment with the sleeve. A radial and/or axial expansion of the sealing and centering section is reduced in a predetermined region of the immersion tube opposite the discharge window.

A surface cleaning apparatus comprising an upstream air treatment stage and a downstream air treatment stage, which is positioned rearward of the upstream air treatment member. The upstream air treatment stage comprises an openable portion which is moveable between a closed position and an open position by a mount that is provided on the downstream air treatment stage.