Vacuum cleaner with removable dust collector, and methods of operating the same

• US 8,021,452 B2
• Filed: 03/16/2009
• Issued: 09/20/2011
• Est. Priority Date: 12/10/2005
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yun, Chang Ho, Hyun, Kie Tak, Ha, Gun Ho, Jeong, Kyeong Seon, Son, Young Bok, Kim, Jae Kyum, Lee, Sung Hwa, Hwang, Man Tae, Yang, Hae Seock, Park, Yun Hee, Kim, Jin Young, Park, Min, Kim, Il Joong, Yoo, Myung Sig, Shin, Jin Hyouk, Choo, Jong Su, Jeong, Hoi Kil, Ko, Moo Hyun, Seo, Jin Wook, Lee, Chang Hoon
• Primary Examiner(s): Hopkins; Robert A
• Application Number:
  US12/404,739
• Publication Number:
  US 20090235956A1
• Time in Patent Office: 918 Days
• Field of Search: 554/28, 554/29, 554/591, 55D/IG.3, 964/05, 964/17, 964/18, 964/19, 964/21
• US Class Current: 55/428
• CPC Class Codes: A47L 5/365 of the vertical type, e.g. tank or bucket type
• CPC Class Codes: A47L 9/0081 Means for exhaust-air diffusion; Means for sound or vibration damping
• CPC Class Codes: A47L 9/108 Dust compression means
• CPC Class Codes: A47L 9/1625 for series flow
• CPC Class Codes: A47L 9/1641 for parallel flow
• 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: B30B 9/3082 with compression means other than rams performing a rectilinear movement
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A vacuum cleaner includes a dust collector that compresses dust stored inside a dust container to minimize the volume of the dust. The dust collector would include one or more pressing plates that are used to compress the dust stored in dust collector. Various methods are used to control movements of the movable pressing plates to facilitate the compression operations. Also, various methods are used to determine when the dust collector is full and needs to be emptied.

Claims

1. A vacuum cleaner, comprising:

a main body including an air suction device that generates an air suctioning force;

a dust container detachably coupled to the main body and including a dust storage portion that stores dust;

at least one press member rotatably disposed within the dust container that compresses the dust stored in the dust storage portion; and

a driving device that automatically rotates the at least one press member.

2. The vacuum cleaner according to claim 1, wherein the at least one press member is capable of being rotated by the driving device when the dust container is installed on the main body.

3. The vacuum cleaner according to claim 1, wherein the at least one press member includes a rotating shaft rotatably coupled to the dust container, and wherein the rotating shaft is connected to the driving device.

4. The vacuum cleaner according to claim 3, wherein the at least one press member rotates bidirectionally.

5. The vacuum cleaner according to claim 3, wherein a cavity is formed in the dust container and a predetermined portion of the rotating shaft is inserted into the cavity.

6. The vacuum cleaner according to claim 3, wherein the rotating shaft extends substantially perpendicular to a bottom surface of the dust container.

7. The vacuum cleaner according to claim 3, wherein the rotating shaft comprises an upper shaft portion and a lower shaft portion having two different widths, respectively, and wherein the lower shaft portion is coupled to the dust container.

8. The vacuum cleaner according to claim 1, wherein the driving device comprises:

a driving motor that generates a driving force; and

a driving mechanism that transfers the driving force of the driving motor to the at least one press member.

9. The vacuum cleaner according to claim 8, wherein the driving motor comprises a bi-directionally rotatable motor.

10. The vacuum cleaner according to claim 8, wherein the driving motor is provided in the main body.

11. The vacuum cleaner according to claim 10, wherein the driving mechanism comprises:

a driven gear coupled to a rotating shaft of the at least one press member; and

a driving gear provided on the main body that transfers the driving force to the driven gear.

12. The vacuum cleaner according to claim 11, wherein the main body comprises a receiving portion that receives the dust container, and wherein an outer circumferential surface of the driving gear is partially exposed from the receiving portion to outside of the vacuum cleaner.

13. The vacuum cleaner according to claim 11, wherein when the dust container is installed on the main body, the driven gear is engaged with the driving gear.

14. The vacuum cleaner according to claim 1, wherein the dust container comprises a fixed member that interacts with the at least one press member to decrease a volume of the dust stored in the dust storage portion.

15. The vacuum cleaner according to claim 1, wherein the dust container comprises a stationery shaft that protrudes inward from one end of the dust storage portion, and wherein the at least one press member is coupled to the stationery shaft.

16. The vacuum cleaner according to claim 15, wherein the stationary shaft is disposed on a same axis as a rotating shaft of the at least one press member.

17. The vacuum cleaner according to claim 15, wherein a cavity is formed within the stationary shaft in an axial direction, the cavity being configured to receive a portion of the at least one press member.

18. The vacuum cleaner according to claim 1, wherein the driving device is disposed adjacent a floor cover of the dust container.

19. The vacuum cleaner according to claim 1, further comprising a dust separator detachably coupled to the main body.

20. The vacuum cleaner according to claim 19, wherein a case of the dust container is similar in shape to a case of the dust separator.

21. The vacuum cleaner according to claim 19, wherein the dust container is disposed below the dust separator.

22. The vacuum cleaner according to claim 19, wherein the dust container is separate from the dust separator.

23. A vacuum cleaner, comprising:

a main body;

a dust container detachably coupled to the main body and including a dust storage portion that stores dust;

at least one plate rotatably disposed within the dust container;

a driving motor provided in the main body that automatically rotates the at least one plate; and

a driving mechanism that transfers a driving force of the driving motor to the at least one plate.

24. The vacuum cleaner according to claim 23, wherein the driving mechanism connects the at least one plate to the driving motor when the dust container is installed on the main body.

25. The vacuum cleaner according to claim 23, wherein the driving motor comprises a bi-directionally rotatable motor.

26. The vacuum cleaner according to claim 23, wherein driving mechanism comprises:

a first driving mechanism provided in the main body and connected to the driving motor; and

a second driving mechanism in communication with the first driving mechanism to transfer the driving force from the driving motor to the at least one plate.

27. The vacuum cleaner according to claim 26, wherein when the dust container is installed on the main body, the first driving mechanism is connected to the second driving mechanism.

28. The vacuum cleaner according to claim 23, further comprising a dust separator detachably coupled to the main body.

29. The vacuum cleaner according to claim 28, wherein a case of the dust container is similar in shape to a case of the dust separator.

30. The vacuum cleaner according to claim 28, wherein the dust container is disposed below the dust separator.

31. The vacuum cleaner according to claim 28, wherein the dust container is separate from the dust separator.

32. A method of operating a vacuum cleaner having a suction motor that generates an air suctioning force and a dust container, wherein at least one press member is provided in the dust container, the method comprising:

operating the suction motor;

moving the at least one press member into a position in which the at least one press member compresses dust in the dust container; and

halting the suction motor and the moving of the at least one press member when a suction motor stopping signal is input by a user, wherein the moving comprises moving the at least one press member automatically using a driving device.

33. The method according to claim 32, wherein the moving comprises rotating the at least one press member.

34. The method according to claim 32, wherein the moving comprises rotating the at least one press member bi-directionally.

35. The method according to claim 32, wherein the moving comprises:

moving the at least one press member in a first direction to compress dust in the dust container until the at least one press member is forced to stop; and

moving the at least one press member in a second opposite direction.

36. A vacuum cleaner, comprising:

a main body including an air suction device that generates an air suctioning force;

a dust container detachably coupled to the main body and including a dust storage portion that stores dust, the dust container having a central longitudinal axis extending in a direction of gravitational pull;

at least one plate rotatably provided in the dust container; and

a driving device that automatically rotates the at least one plate, wherein a rotational axis of the at least one plate extends substantially parallel to the central longitudinal axis of the dust container.