Vacuum cleaner

• US 20020133901A1
• Filed: 03/15/2002
• Published: 09/26/2002
• Est. Priority Date: 08/09/2000
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ohta, Hiroshi, Oka, Yasuhiro
• Granted Patent: US 6,859,975 B2
• Time in Patent Office: Days
• US Class Current: 15/347
• CPC Class Codes: A47L 9/1472 combined with security means, e.g. for preventing use, e.g. in case of absence of the bag
• CPC Class Codes: A47L 9/1666 with filtering means
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles
• CPC Class Codes: A47L 9/1691 Mounting or coupling means for cyclonic chamber or dust receptacles
• CPC Class Codes: A47L 9/2805 Parameters or conditions being sensed
• CPC Class Codes: A47L 9/2842 Suction motors or blowers
• CPC Class Codes: A47L 9/2857 User input or output elements for control, e.g. buttons, switches or displays
• CPC Class Codes: A47L 9/2889 Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A vacuum cleaner has a cyclone dust collector 4, arranged in a suction air passage, for separating dust by making sucked air into a whirling stream. The cyclone dust collector 4 has an inlet port 41a through which the sucked air is introduced, a dust collection chamber 41 for collecting separated dust, a lid 42 for opening and closing the dust collection chamber 41, an exhaust cylinder 44 through which the sucked air is discharged out of the dust collection chamber, and a shielding member 46 arranged below the exhaust cylinder 44. Dust is separated as a result of a whirling stream of air colliding with shielding ribs 46b and a circular portion 46a of the shielding member 46.

Claims

1. A vacuum cleaner comprising a nozzle unit having a nozzle, an electric blower for sucking air, a suction air passage provided between the nozzle unit and the electric blower, and a cyclone dust collector, arranged in the suction air passage, for separating dust by making sucked air into a whiling stream,

wherein the cyclone dust collector comprises a dust collection chamber, having an inlet port through which to introduce the sucked air, for collecting separated dust, a lid for opening and closing the dust collection chamber, and an exhaust cylinder through which to discharge the sucked air.

2. A vacuum cleaner as claimed in claim 1, wherein the exhaust cylinder is detachable from the lid.

3. A vacuum cleaner as claimed in claim 1, further comprising exhaust cylinder detecting means for detecting that the exhaust cylinder is located in a predetermined position, wherein the electric blower is controlled according to a result of detection by the exhaust cylinder detecting means.

4. A vacuum cleaner as claimed in claim 1, further comprising a shielding member with which a stream of air inside the dust collection chamber is made to collide to separate dust.

5. A vacuum cleaner as claimed in claim 4, wherein the lid, the exhaust cylinder, and the shielding member are integrally detachable from the dust collection chamber.

6. A vacuum cleaner as claimed in claim 4, wherein the exhaust cylinder is arranged above the shielding member and substantially on a center line of the dust collection chamber.

7. A vacuum cleaner as claimed in claim 4, wherein the shielding member has a circular portion having a substantially circular shape and arranged inside the dust collection chamber with a gap secured from an inner wall thereof and a protruding portion formed so as to protrude downward from a periphery of the circular portion.

8. A vacuum cleaner as claimed in claim 7, wherein the shielding member has a plurality of shielding ribs arranged radially on a bottom surface of the circular portion so as to protrude downward therefrom.

9. A vacuum cleaner as claimed in claim 8, wherein, between two adjacent shielding ribs, a projection rib is formed so as to protrude from the inner wall of the dust collection chamber toward a center thereof.

10. A vacuum cleaner as claimed in claim 1, wherein the cyclone dust collector is integrally detachable from the suction passage.

11. A vacuum cleaner as claimed in claim 10, further comprising dust collector detecting means for detecting that the cyclone dust collector is located in a predetermined position, wherein the electric blower is controlled according to a result of detection by the dust collector detecting means.