Cyclone dust-separating apparatus

• US 20060156699A1
• Filed: 05/13/2005
• Published: 07/20/2006
• Est. Priority Date: 01/14/2005
• Status: Active Grant

• Current Assignee: Samsung Gwangju Electronics Co., Ltd. (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Gwangju Electronics Co., Ltd. (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Tak-Soo
• Granted Patent: US 7,422,615 B2
• Time in Patent Office: Days
• US Class Current: 55/345
• CPC Class Codes: A47L 9/1608 Cyclonic chamber constructions
• CPC Class Codes: A47L 9/165 Construction of inlets
• CPC Class Codes: A47L 9/1658 Construction of outlets
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles
• CPC Class Codes: B04C 5/14 Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations provided with a great number of slits or perforations B04C5/10
• CPC Class Codes: B04C 5/185 Dust collectors
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A cyclone dust-separating apparatus including a cyclone body having a cyclone chamber and a dirt-collecting chamber enclosing an outer circumference of the cyclone chamber, an upper cover disposed on an upper end of the cyclone body to form a connection passage between the cyclone chamber and the dirt-collecting chamber, and a backflow prevention protrusion formed on an inner wall of the upper cover, for preventing dirt collected in the dirt-collecting chamber from flowing back to the cyclone chamber.

Claims

1. A cyclone dust-separating apparatus comprising:

a cyclone body having a cyclone chamber and a dirt-collecting chamber enclosing an outer circumference of the cyclone chamber;

an upper cover disposed on an upper end of the cyclone body to form a connection passage between the cyclone chamber and the dirt-collecting chamber; and

a backflow prevention protrusion formed on an inner wall of the upper cover, the backflow protrusion preventing dirt collected in the dirt-collecting chamber from flowing back to the cyclone chamber.

2. The cyclone dust-separating apparatus as claimed in claim 1, further comprising:

an air discharge pipe disposed on a bottom of the cyclone body;

an air inflow pipe disposed in a lower portion of the cyclone body to penetrate through an inner wall and an outer wall of the cyclone body; and

a guide disposed in the cyclone chamber to guide air drawn in through the air inflow pipe.

3. The cyclone dust-separating apparatus as claimed in claim 2, wherein the backflow prevention protrusion, the shape of which resembles a cylinder, has a larger diameter D2 than a diameter D1 of the cyclone chamber.

4. The cyclone dust-separating apparatus as claimed in claim 3, wherein a height H3 of the backflow prevention protrusion is smaller than a height H4 of the connection passage.

5. A cyclone dust-separating apparatus comprising:

a cyclone body including a circular inner wall, an outer wall spaced from the inner wall by a predetermined distance, a bottom connecting the inner wall and the outer wall, and an upper wall connecting with an upper end of the outer wall;

an air inflow pipe penetrating through the outer wall and the inner wall of the cyclone body; and

an air discharge pipe penetrating through the bottom of the cyclone body.

6. The cyclone dust-separating apparatus as claimed in claim 5, further comprising a backflow prevention protrusion protruding downward from a lower surface of the upper wall, wherein the backflow prevention protrusion has a larger diameter than that of the circular inner wall.

7. A cyclone dust-separating apparatus comprising:

a bottom wall;

an outer wall extending upward from said bottom wall to a first height;

an inner wall being spaced from said outer wall, said inner wall extending upward from said bottom wall to a second height, said second height being smaller than said first height;

an upper cover covering said inner and outer walls so that a connection passage having a fourth height is defined between said inner wall and said upper cover; and

a backflow prevention protrusion extending downward from said upper cover a third height, said third height being smaller than said fourth height.

8. The cyclone dust-separating apparatus as claimed in claim 7, wherein said inner wall has a first diameter and said backflow prevention protrusion has a second diameter, said second diameter being larger than said first diameter.

9. The cyclone dust-separating apparatus as claimed in claim 7, further comprising an air inflow pipe penetrating through said outer and inner walls.

10. The cyclone dust-separating apparatus as claimed in claim 7, further comprising an air discharge pipe penetrating through said bottom wall and extending upwards from said bottom wall a fifth height.

11. The cyclone dust-separating apparatus as claimed in claim 10, wherein said fifth height is smaller than said second height.

12. The cyclone dust-separating apparatus as claimed in claim 11, further comprising a spiral guide disposed on said bottom wall between said inner wall and said air discharge pipe.

13. The cyclone dust-separating apparatus as claimed in claim 12, wherein said spiral guide increases in height from said bottom wall to a sixth height.

14. The cyclone dust-separating apparatus as claimed in claim 13, wherein said fifth height is equal to the result of multiplying a coefficient by a value obtained by subtracting said sixth height from said second height and then adding said sixth height to said result.

15. The cyclone dust-separating apparatus as claimed in claim 14, wherein said coefficient is approximately ⅓

to ½

.

16. A cyclone dust-separating apparatus comprising:

a cyclone body having an air inflow pipe, an air discharge pipe, a cyclone chamber, and a dirt-collecting chamber enclosing an outer circumference of the cyclone chamber; and

an upper cover disposed on an upper end of the cyclone body to form a connection passage between the cyclone chamber and the dirt-collecting chamber,

wherein the air inflow pipe and the air discharge pipe are formed on a lower part of the cyclone body such that dirt is prevented from flowing back through the air discharge pipe when the cyclone body is tilted over.

17. The cyclone dust-separating apparatus as claimed in claim 16, wherein the air inflow pipe is formed on a lower side of the cyclone body, and penetrating through the dirt-collecting chamber to connect to the cyclone chamber;

and,

the air discharge pipe is formed on a lower side of the cyclone body, and protruding into the cyclone chamber.

18. The cyclone dust-separating apparatus as claimed in claim 17, further comprising a guide disposed in the cyclone chamber to upwardly guide air drawn in through the air inflow pipe.

19. A cyclone dust-separating apparatus, comprising:

a cyclone chamber in which air is drawn and dirt is separated from the drawn air by centrifugal force;

a dirt-collecting chamber enclosing an outer circumference of the cyclone chamber; and

a connection passage formed on an upper end of the cyclone chamber, and connecting between the cyclone chamber and the dirt-collecting chamber,

wherein external air is drawn through a lower side of the cyclone body and ascended inside the cyclone chamber in a whirling current, shedding out dirt, the dirt separated from the air is discharged through the connection passage and stored in the dirt-collecting chamber, and clean air is discharged through a center of a bottom of the cyclone chamber such that dirt of the dirt-collecting chamber is prevented from discharging out when the cyclone body is tilted over.

20. The cyclone dust-separating apparatus as claimed in claim 19, further comprising a backflow prevention member provided to an upper end of the dirt-collecting chamber.