An environmental control unit comprises a housing, a vacuum cleaner, a filtration unit, and a blower. The vacuum cleaner is positioned in the housing and is configured to receive a tool contaminant stream produced by at least one tool. The vacuum cleaner filters particulate matter from the tool contaminant stream, thereby producing a filtered air stream. The filtration unit is also positioned within the housing and comprises at least one filter. The blower is positioned within the housing downstream of the filtration unit. The blower is configured to create negative air pressure within the second compartment to draw an area contaminant stream from an exterior of the environmental control unit into the housing. A second blower may also be present. The blower draws the filtered air stream and the area contaminant stream through the at least one filter in the filtration unit to produce a filtered mixture stream.

A vacuum cleaner has a main body, a motor-driven fan unit, a printed circuit board for controlling the motor-driven fan unit and a housing encasing a portion of the printed circuit board. A heat sink of the printed circuit board extends through the housing from an interior of the housing to an exterior of the housing. The printed circuit board is disposed within the main body such that the heat sink is located in an air-flow path through the main body.

Highly efficient particulate collectors, such as for dust and street debris collected by a mobile street cleaning vehicle, with very low pressure loss are disclosed. One embodiment uses a specially contoured passage to separate the solid particles from particulate-laden gas stream by rapid directional change at a throat region. By using the Venturi effect at the accelerating zone communicating with a gas return channel from the particulate retaining chamber, a small amount of the gas will be recirculated from the deposit zone to help move and retain the separated particles in a confined collection receptacle.

A handheld cleaner is provided. The handheld cleaner includes: a dust cup assembly comprising: a cup casing; a device housing configured to have a tube shape and disposed in the cup casing, wherein an outer end face of the device housing at an axial side thereof abuts against or extends out of a partial inner surface of the cup casing, and a dust removal chamber is defined between an inner surface of the cup casing and an outer peripheral surface of the device housing and surrounds the device housing along a circumferential direction of the device housing; and a negative pressure device located within the device housing and configured to enable dusty air to enter the dust removal chamber for dust and air separation; a holding assembly mounted to the dust cup assembly and configured for handholding.

A hand vacuum cleaner may have a first stage cyclone having a first stage cyclone chamber, a first stage cyclone air inlet, a first stage cyclone air outlet and a first stage longitudinal cyclone axis about which the air rotates in the first stage cyclone chamber. A second stage cyclone may be downstream from the first stage cyclone and may be at least substantially nested in the first stage cyclone. The second stage cyclone may have a second stage cyclone chamber, a plurality of second stage cyclone air inlets, a second stage cyclone air outlet and a second stage longitudinal cyclone axis about which the air rotates in the second stage cyclone chamber. A length of the second stage cyclone chamber may be shorter than a length of the first stage cyclone chamber.

A hand vacuum cleaner comprises a main body has a driving handle and houses a suction motor and fan assembly, the suction motor and fan assembly having a suction motor axis of rotation wherein the driving handle has a hand grip portion that extends upwardly and forwardly when the hand vacuum cleaner is oriented with the upper end above the lower end. An air treatment member has a dirt collection region having an openable door provided on a front end of the air treatment member.

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.

The present disclosure relates to a dust cup assembly and a handheld cleaner having the same, the dust cup assembly includes a casing including a cup body with an open top, and a cleaner cover disposed at a top of the cup body and capable of being opened and closed; a negative pressure device provided in the cup body and used to suck airflow from an environment into the casing; and a dedusting device provided in the cup body, located above the negative pressure device and withdrawable from the top of the cup body when the cleaner cover is opened.

An autonomous coverage robot includes a chassis, a drive system configured to maneuver the robot, and a cleaning assembly. The cleaning assembly includes a cleaning assembly housing and at least one driven sweeper brush. The robot includes a controller and a removable sweeper bin configured to receive debris agitated by the driven sweeper brush. The sweeper bin includes an emitter disposed on an interior surface of the bin and a receiver disposed remotely from the emitter on the interior surface of the bin and configured to receive an emitter signal. The emitter and the receiver are disposed such that a threshold level of accumulation of debris in the sweeper bin blocks the receiver from receiving emitter emissions. The robot includes a bin controller disposed in the sweeper bin and monitoring a detector signal and initiating a bin full routine upon determining a bin debris accumulation level requiring service.

A debris monitoring system includes a receptacle, a first and a second emitter, and a first receiver. The receptacle defines an opening to receive debris into the receptacle. The first and second emitter are each arranged to emit a signal across at least a portion of the opening. The first receiver is proximate to the first emitter to receive reflections of the signal emitted by the first emitter, and the first receiver is disposed toward the opening to receive an unreflected portion of the signal emitted by the second emitter across at least a portion of the opening.