Cyclonic Separation Device With Acceleration Ramp

• US 20100175219A1
• Filed: 01/11/2010
• Published: 07/15/2010
• Est. Priority Date: 01/15/2009
• Status: Active Grant

• Current Assignee: SEB SA
• Original Assignee: SEB SA
• Inventors: Soen, Alain, Renard, Sylvain
• Granted Patent: US 8,806,707 B2
• Time in Patent Office: Days
• US Class Current: 15/353
• CPC Class Codes: A47L 9/165 Construction of inlets
• 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: B01D 45/16 generated by the winding course of the gas stream , the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A cyclonic separation device for dust and debris in vacuum cleaners, comprising a roughly cylindrical interior cyclonic chamber connected to an air intake, as well as a separator filter located in the central part of the interior chamber, comprising a tube segment to direct airflow to the air intake with this tube segment located around the roughly cylindrical interior cyclonic chamber, from a starting point to an end point near the air intake, with the cross-section of this tube segment near the end point being smaller than that near the starting point in order to form an acceleration ramp for the airflow between these two points.

Claims

1. Device for cyclonic separation of dust and debris in vacuum cleaners, comprising a substantially cylindrical interior cyclonic chamber connected to an air intake, including a separator filter located in a central part of the interior cyclonic chamber, said device further comprising a tube segment to direct airflow to the air intake wherein the tube segment is located around the interior cyclonic chamber, extending from a starting point to an end point near the air intake, with a cross-section of the tube segment near the end point being smaller than the cross-section of the tube segment near the starting point in order to form an acceleration ramp for airflow between the starting point and the end point.

2. Cyclonic separation device as described in claim 1, wherein the tube segment to direct the airflow toward the air intake of the cyclonic chamber extends at least one quarter of the way around the cyclonic chamber.

3. Cyclonic separation device as described in claim 1, wherein the tube segment to direct the airflow toward the air intake of the cyclonic chamber extends at least two-fifths of the way around the cyclonic chamber.

4. Cyclonic separation device as described in claim 1, wherein the tube segment to direct the airflow toward the air intake of the cyclonic chamber is roughly horizontal.

5. Cyclonic separation device as described in claim 1, wherein the tube segment to direct the airflow toward the air intake of the cyclonic chamber is connected to a vertical tube segment with a cross-section that decreases in size, progressing in the same direction as air circulation.

6. Cyclonic separation device as described in claim 1, including a fixed bowl defining the cyclonic chamber, with the bowl holding the tube segment.

7. Cyclonic separation device as described in claim 6, wherein the bowl comprises a tubular structure with a cylindrical lateral exterior surface defining the cyclonic chamber and in that the tube segment is fixed to the cylindrical lateral exterior surface of the tubular structure of the bowl.

8. Cyclonic separation device as described in claim 6, wherein the bowl comprises an inclined, hinged lower section forming a door.

9. A vacuum cleaner comprising a cyclonic separation device for dust and debris as described in claim 1.

10. An upright vacuum cleaner, comprising a housing installed in the handle to hold the cyclonic separation device described in claim 6, said housing comprising a first connector in its lower part, linked to a vertical tube segment of the bowl and a second connector in its upper part linked to the outlet of the cyclonic separation device.