Separation device for a vacuum cleaner

• US 5,950,274 A
• Filed: 08/13/1997
• Issued: 09/14/1999
• Est. Priority Date: 09/04/1996
• Status: Expired due to Term

• Current Assignee: Aktiebolaget Electrolux
• Original Assignee: ABet Electrolux
• Inventors: Kilstrom, Lars
• Primary Examiner(s): Noore, Chris K.
• Application Number:
  US08/910,763
• Time in Patent Office: 762 Days
• Field of Search: 15/350, 15/353, 55/459.1
• US Class Current: 15/350
• CPC Class Codes: A47L 9/104 Means for intercepting small objects
• CPC Class Codes: A47L 9/165 Construction of inlets
• CPC Class Codes: A47L 9/248 Parts, details or accessories of hoses or pipes nozzles A47L9/02
• 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

Abstract

A vacuum cleaner having a separation device and a vacuum source communicating with a tube handle. The tube handle is connected to a nozzle by a tube shaft (33). The tube shaft is either shaped as a cyclone separator or a cyclone separator is arranged between the nozzle and the tube handle. The cyclone separator is provided with a whirl chamber (37) which is defined, in part, by an up-side-down truncated cone (41). The whirl chamber has an inlet opening (38), a first outlet opening and a second outlet opening. The inlet opening is placed at the upper part of the whirl chamber (37). Partially cleaned air flows through the first outlet opening (39) which communicates with the vacuum source. The second outlet opening (42) is placed at the lower part of the whirl chamber. The second outlet opening communicates with a dust collecting container (43).

Claims

1. A vacuum cleaner comprising a vacuum source (11) communicating with a tube handle (14), said tube handle being connected to a nozzle (16) by means of a tube shaft (15, 33), a cyclone separator being disposed between the tube handle (14) and the nozzle (16), said cyclone separator including a whirl chamber (24, 37) which is at least partially defined by a truncated cone (18b, 41), said cyclone separator comprising:

an inlet opening (23,

     38), said inlet opening being located at an upper part of the whirl chamber (24,

     37);

a central first outlet opening (31,

     39) for partially-cleaned air, said first outlet opening communicating with the vacuum source;

a second outlet opening (22,

     42) for separated particles disposed at a lower part of the whirl chamber, said second outlet opening communicating with a dust collecting container (26,

     43).

2. Vacuum cleaner according to claim 1, wherein the cyclone separator is enclosed in a shell (34) comprising an upper part (34a) with a first tube coupling (35) and a second tube coupling (40), said first tube coupling being connected to the tube shaft (33) and said second tube coupling (40) being connected to the tube handle (14), said upper part (34a) having a channel (36) connecting said first tube coupling (35) with the whirl chamber (37) and a mainly cylindrical wall part which is provided with the inlet opening (38), said inlet opening being arranged such that the air flows mainly tangentially into the whirl chamber, said first outlet opening (39) being provided by a sleeve, said sleeve having an axis which is generally parallel to the axis of the cylindrical wall part, said sleeve being connected to the second tube coupling (40).

3. Vacuum cleaner according to claim 1, wherein the tube shaft (15) comprises the whirl chamber (24), said whirl chamber having a mainly cylindrical wall part (17) provided with said inlet opening (23) through which air flows mainly tangentially into the whirl chamber, the inlet opening (23) communicating with a connecting tube disposed at the lower part of the tube shaft via a channel (19, 28), said first outlet opening (31) being defined by a sleeve, said sleeve having an axis which is generally parallel to an axis of the cylindrical wall part, said sleeve communicating with a tube connection (32) for the tube handle (14), and the tube shaft (15) enclosing said truncated cone (18b).

4. Vacuum cleaner according to claim 1, wherein the tube handle (14) is connected to the vacuum source via a hose (13).

5. Vacuum cleaner according to claim 1, wherein the vacuum source is integrated into the tube handle (14).

6. A cyclone separator attachment for a vacuum cleaner, said separator attachment being removably mounted between a tube shaft and a tube handle, comprising:

a whirl chamber at least partially defined by a truncated cone, said whirl chamber having an inlet opening for particle-laden air, a first, centrally-located outlet opening for partially cleaned air, and a second outlet opening for separated particles, said second outlet opening being disposed at a bottom of said whirl chamber and communicating with a collecting container.

7. A separator attachment according to claim 6, further comprising a shell surrounding said whirl chamber, said shell having first and second tube couplings, a channel fluidly connects said first tube coupling with said whirl chamber via said inlet opening, said inlet opening being arranged such that air flows tangentially into said whirl chamber.

8. A separator attachment according to claim 7, wherein the first outlet opening is defined by a sleeve, said sleeve having an axis which is generally parallel to an axis of the whirl chamber, said sleeve being connected to said second tube coupling.

9. A vacuum cleaner comprising a vacuum source (11) communicating with a tube handle (14), said tube handle being connected to a nozzle (16) via a tube shaft (15), said tube shaft including a cyclone separator, said cyclone separator comprising a truncated cone which at least partially defines a whirl chamber, said cyclone separator comprising:

a cylindrical wall part;

an inlet opening in said cylindrical wall part and located at an upper part of said whirl chamber and through which dirt-laden air enters said whirl chamber;

a central first outlet opening for partially-cleaned air, said first outlet opening communicating with said vacuum source via said tube handle;

a second outlet opening for separated particles disposed at a lower part of the whirl chamber, said second outlet opening communicating with a dust collecting container.

10. A vacuum cleaner according to claim 9, wherein the inlet opening communicates with a connecting tube disposed at the lower part of the tube shaft via a channel.

11. A vacuum cleaner according to claim 10, wherein the first outlet opening is defined by a sleeve, said sleeve having an axis which is generally parallel to an axis of the cylindrical wall part.

12. A vacuum cleaner according to claim 11, wherein the sleeve communicates with a tube connection for the tube handle.