The present disclosure provides a cyclone separator and a cyclone separation method. The cyclone separator includes a shell and a core tube. An upper end of the shell is provided with a gas inlet. A lower end of the shell is provided with a shell outlet. An opening at a lower end of the core tube is provided inside the shell. The lower end of the core tube is provided with a baffle structure, and at least a portion of the baffle structure extends vertically. By providing the baffle structure, the present disclosure can cut off the flow path of the short-circuit flow and the radially centripetal moving gas flow such as the centripetal flow in the particle spiral band area, weaken the short-circuit flow, the inner vortex flow and the precessing vortex core, thus improving separation efficiency of fine particles with particle diameters of 1 m to 10 m.

A foreign matter removal device removes foreign matter contained in a fluid. The fluid is caused to flow into the trap portion and is separated into an inner fluid flowing inside a separation portion and an outer fluid flowing outside the separation portion. First foreign matter contained in the outer fluid and having a higher specific gravity than the fluid is captured in a gap between an inner wall of the trap portion and the separation portion. Separation of second foreign matter contained in the inner fluid and having a lower specific gravity than the fluid is promoted by a gas-liquid separation portion, and the second foreign matter is discharged to outside, through a foreign-matter-discharging-means-connection portion provided in a ceiling on the vertically upper side at a center part of the trap portion, from foreign-matter-discharging means.

A hand vacuum has an air flow passage extending from a dirty air inlet to a clean air outlet and a motor and fan assembly provided in the air flow passage. The hand vacuum has an air treatment chamber having a front end, a rear end, a treatment chamber axis extending in a forward/rearward direction between the front and rear ends, an air inlet, an air outlet, a dirt outlet and a treatment chamber door rotatably mounted about an axis that is parallel to the treatment chamber axis. The hand vacuum has a dirt collection chamber external to the air treatment chamber. The dirt collection chamber has a collection chamber door rotatably mounted about another axis that extends in a different direction to the forward/rearward direction and extends in an emptying plane. When the collection chamber door is open, an emptying port is provided in the emptying plane.

A hand vacuum has an air flow passage extending from a dirty air inlet to a clean air outlet and a motor and fan assembly provided in the air flow passage. The hand vacuum has an air treatment chamber having a front end, a rear end, a treatment chamber axis extending in a forward/rearward direction between the front and rear ends, an air inlet, an air outlet, a dirt outlet and a treatment chamber door rotatably mounted about an axis that is parallel to the treatment chamber axis. The hand vacuum has a dirt collection chamber external to the air treatment chamber. The dirt collection chamber has a collection chamber door rotatably mounted about another axis that extends in a different direction to the forward/rearward direction and extends in an emptying plane. When the collection chamber door is open, an emptying port is provided in the emptying plane.

A vacuum cleaner and fluid separator includes a vortex generating device which generate forced vortex based on the Coanda effect. The generated vortex is the laminar swirling flow causing the fluid particles to be separated into layers. The fluid with bigger particles swirls at the outer layer, while the fluid with smaller particles swirls at the inner layer. The separator further includes stacked cones with a narrow space between the stacked cones to promote separation. The fluid separator further includes the reverse swirl facilitating cone to separate the fluid with bigger particles to be contained in the fluid storage chamber with bigger particles, and draw partial fluid swirling at the inner layer through the connection channel recycle back to the separation system. The vacuum cleaner further includes the preliminary separating section that separate big impurities out before the separation process for the fluid with smaller particles.

A vacuum cleaner and fluid separator includes a vortex generating device which generate forced vortex based on the Coanda effect. The generated vortex is the laminar swirling flow causing the fluid particles to be separated into layers. The fluid with bigger particles swirls at the outer layer, while the fluid with smaller particles swirls at the inner layer. The separator further includes stacked cones with a narrow space between the stacked cones to promote separation. The fluid separator further includes the reverse swirl facilitating cone to separate the fluid with bigger particles to be contained in the fluid storage chamber with bigger particles, and draw partial fluid swirling at the inner layer through the connection channel recycle back to the separation system. The vacuum cleaner further includes the preliminary separating section that separate big impurities out before the separation process for the fluid with smaller particles.

A compact disc stack cyclone separator includes: a fluid inlet; a vortex generator which generates a forced vortex; a conical or cylindrical vortex generating chamber; a separation chamber which is a cavity formed by downstream open ends of stacked truncated cones; narrow gaps between the stacked truncated cones, a collecting channel for heavy phrase fluid from the gaps between the stacked truncated cones which installed about the outlets of the gaps at upstream open end of the stacked truncated cones to channel heavy phrase fluid to a storage chamber of heavy phrase fluid; and an outlet for heavy phrase fluid to flow out from the storage chamber of heavy phrase fluid, while the outlet of light phrase fluid is annexed to the downstream open end of the last stacked truncated cone which is the downstream open end of separation chamber.

A compact disc stack cyclone separator includes: a fluid inlet; a vortex generator which generates a forced vortex; a conical or cylindrical vortex generating chamber; a separation chamber which is a cavity formed by downstream open ends of stacked truncated cones; narrow gaps between the stacked truncated cones, a collecting channel for heavy phrase fluid from the gaps between the stacked truncated cones which installed about the outlets of the gaps at upstream open end of the stacked truncated cones to channel heavy phrase fluid to a storage chamber of heavy phrase fluid; and an outlet for heavy phrase fluid to flow out from the storage chamber of heavy phrase fluid, while the outlet of light phrase fluid is annexed to the downstream open end of the last stacked truncated cone which is the downstream open end of separation chamber.