A vacuum cleaner and suction nozzle thereof. The vacuum cleaner has a housing, dust collecting unit, filter assembly, motor assembly and roller brush. The suction nozzle has a bottom housing, front cover and roller brush. The housing includes a concave cavity; the bottom housing and the front cover latch together to form a chamber; the roller brush assembly and the separation piece fit into this chamber; the separation piece corresponds to a transmission component of the roller brush. When rotating at high speed, the roller brush forms a seamless and closed separation face with the separation piece, preventing foreign matter from entering the transmission component, thus avoiding reduced suction and damage due to a tangled synchronous belt or a shaft jamming a roller brush bearing.

A two-stage dust-air separation structure includes a cyclone separator and a spiral dust-air separation device. A first stage separation of dust from air is realized by a cyclone housing, and by arranging a second-stage cyclone barrel 5 inside the cyclone housing and arranging the spiral dust-air separation device at a barrel opening of the second-stage cyclone barrel, the dusty air, after going through the first stage separation, is guided by the spiral dust-air separation device to form, on an inner wall of the second-stage cyclone barrel, an airflow rotating towards the barrel bottom, and the dust in the airflow is driven by a centrifugal force to rotate downwardly to the barrel bottom and be collected in a second-stage dust collecting space, and the air in the rotating airflow is extracted by the negative pressure, thereby realizing a second stage separation of dust from air.

A portable surface cleaning apparatus has a main body and air treatment member assembly is removably mounted to the main body. The air treatment member assembly air outlet and/or the suction motor inlet end is provided at the lower end of the air treatment member assembly when the surface cleaning apparatus is located on a floor and a pre-motor filter underlies the air treatment member assembly and/or the suction motor.

A portable surface cleaning apparatus has a main body and air treatment member assembly is removably mounted to the main body. The air treatment member assembly air outlet and/or the suction motor inlet end is provided at the lower end of the air treatment member assembly when the surface cleaning apparatus is located on a floor and a pre-motor filter underlies the air treatment member assembly and/or the suction motor.

A vacuum cleaner, includes a dirty air inlet, a clean air outlet and an air channel arranged between the dirty air inlet and the clean air outlet. A vacuum generator is arranged inside the air channel. A first filter is arranged in the upper reach of the vacuum generator. A second filter is arranged in the upper reach of the first filter. The vacuum cleaner further comprises a state sensor. When in a second state, the first filter and the second filter are not combined, and the state sensor is not triggered. Missing mounting prevention detection of a main filter and a pre-filter can be realised at the same time by means of a micro-control switch, thereby saving on cost.

A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member positioned in the air flow path. The air treatment member comprises a dirt collection region which has an openable door. A pre-motor filter is positioned downstream of the chamber and upstream of the suction motor and a suction motor is provided in the air flow path downstream of the chamber. The air flow path comprises a downstream portion extending from the pre-motor filter to the suction motor, and, during an emptying mode of operation, the openable door is opened and the downstream portion of the air flow path is closed.

A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member positioned in the air flow path. The air treatment member comprises a dirt collection region which has an openable door. A pre-motor filter is positioned downstream of the chamber and upstream of the suction motor and a suction motor is provided in the air flow path downstream of the chamber. The air flow path comprises a downstream portion extending from the pre-motor filter to the suction motor, and, during an emptying mode of operation, the openable door is opened and the downstream portion of the air flow path is closed.

A surface treatment apparatus may include an air flow path extending from a dirty air inlet to a clean air outlet and a main body. A suction motor may be provided in the air flow path. A cyclone bin assembly may be provided in the air flow path and may be removably mountable to the main body. A pre-motor filter chamber may be provided and may have a rear wall, a sidewall extending and an openable front wall opposite the rear wall and sealingly enclosing the pre-motor filter chamber. The pre-motor filter chamber may be disposed longitudinally between the cyclone bin assembly and the suction motor and the cyclone bin assembly may be positioned in front of at least a portion of the openable front wall of the pre-motor filter chamber. The front wall may be accessible when the cyclone bin assembly is removed from the main body.

A trap for use with a vacuum cleaner includes a trap body formed in a substantially cylindrical shape. The trap body includes a suction opening formed at one axial end to suck in a target to be trapped and an insertion opening formed at the other end to be inserted into a vacuum cleaner. An adhesive is provided on at least a portion of an inner surface of the trap body. The trap for use with a vacuum cleaner includes a net portion. The net portion blocks a plane orthogonal to an axial direction of the trap body. The net portion includes a net formed in at least a portion to transmit air sucked in through the suction opening. The trap body includes a protrusion formed on at least a portion in a circumferential direction of an outer surface thereof to protrude outward.

A vacuum cleaner including a dirty air inlet, a fluid flow path extending from the dirty air inlet to a clean air outlet, a fluid flow motor positioned in the fluid flow path, and a filter assembly positioned in the fluid flow path. The filter assembly including a first cylindrical filter and a second cylindrical filter nested within and removable from the first cylindrical filter. An inner diameter of the first cylindrical filter is smaller than an outer diameter of the second cylindrical filter such that the second cylindrical filter is compressed in order to be nested within the first cylindrical filter.