Method and device for cleaning a component, particularly an evaporator of a condenser device, and washer/dryer or dryer having such a device

• US 9,347,171 B2
• Filed: 09/24/2008
• Issued: 05/24/2016
• Est. Priority Date: 10/12/2007
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Bosch und Siemens Hausgerã¤Te GmbH (Robert Bosch GmbH)
• Inventors: Grunert, Klaus, Pischits, Dimitri, Willwert, Ralf, Wuttge, Oliver
• Primary Examiner(s): Kornakov, Michael
• Assistant Examiner(s): Lorenzi, Marc
• Application Number:
  US12/682,283
• Publication Number:
  US 20100212369A1
• Time in Patent Office: 2,799 Days
• Field of Search: 68/13.R, 682/08, 137/113, 222/509, 222/518, 251/246, 251/323
• US Class Current: 1/1
• CPC Class Codes: D06F 58/22 Lint collecting arrangements
• CPC Class Codes: D06F 58/24 Condensing arrangements

Abstract

A device for cleaning an evaporator of a condenser with condensation water. The device includes a condensation water pan that collects condensation water condensed from process air by the evaporator, and a collection container above the evaporator that receives the condensation water from the condensation water pan and that dispenses the condensation water with a gush onto the evaporator from a rinsing chamber of the collection container with a sudden opening of a closure part through a downpipe.

Claims

1. A device for cleaning an evaporator of a condenser with condensation water, the device comprising:

a condensation water pan configured to collect condensation water condensed from process air by the evaporator;

a collection container above the evaporator configured to receive the condensation water collected by the condensation water pan;

a control device; and

a downpipe to direct the condensation water onto the evaporator from the collection container,

wherein the collection container further comprises a rinsing chamber having an outlet fluidly joining the rinsing chamber to the downpipe and a closure plate positioned on the collection container to cover the outlet in a closed position of the closure plate, the closure plate being configured to be actuated by the control device to open the outlet and allow a flow of condensation water to flow from the rinsing chamber to the downpipe,

wherein the collection container further comprises a storage chamber configured to receive condensation water overflowing from the rinsing chamber,

wherein the collection container further comprises a partition wall extending between the rinsing chamber and the storage chamber from a bottom of the collection container, and

wherein the closure plate further comprises a support pin extending from a bottom side of the closure plate into an opening in the bottom of the collection container to lift the closure plate into an open position, the opening being separate from the outlet such that the support pin is separated from a flow path of the flow of condensation water flowing from the outlet to the downpipe.

2. The device of claim 1, further comprising a pressurized water supply configured to dispense pressurized water onto the evaporator.

3. The device of claim 1, wherein the collection container is removable from a receiving device to empty the condensation water from the storage chamber of the collection container.

4. The device of claim 1, wherein a cross-section of the downpipe along at least a portion of a length of the downpipe is narrower than a cross section of the outlet of the rinsing chamber.

5. The device of claim 1, wherein a rinsing nozzle of the downpipe is located at a fixed position relative to an evaporator inlet.

6. The device of claim 1, wherein a rinsing nozzle of the downpipe is movable between a first position proximal to an evaporator inlet and a second position proximal to an evaporator outlet.

7. The device of claim 1, further comprising a pump to pump the condensation water from the condensation water pan to the collection container.

8. The device of claim 1, further comprising a mains water line configured to supply pressurized mains water to the downpipe such that the downpipe dispenses the pressurized mains water onto the evaporator from above.

9. The device of claim 8, wherein the control device is configured to control a supply of pressurized mains water to the downpipe.

10. The device of claim 3, wherein the closure plate and the collection container are connected by the support pin such that the closure plate is removable with the collection container.

11. The device of claim 1, wherein the collection container further comprises peripheral walls, the partition wall being lower in height than the peripheral walls.

12. The device of claim 11, wherein the partition wall has a height such that condensation water overflows into the storage chamber when the rinsing chamber contains 2.5 liters of water.

13. The device of claim 1, further comprising a drain or a pump to remove condensation water from the storage chamber.

14. The device of claim 1, further comprising an overflow container configured to receive condensation water overflowing from the storage chamber.

15. The device of claim 14, further comprising a return channel to direct condensation water from the overflow container to the condensation water pan.

16. The device of claim 3, wherein the collection container further comprises a grip for removal of the collection container from the receiving device.

17. The device of claim 1, wherein the rinsing chamber is shaped and dimensioned to contain 2.5 liters of condensation water.

18. The device of claim 1, wherein the collection container is configured to dispense the condensation water contained in the rinsing chamber from the downpipe and onto the evaporator within a duration of 2 seconds or less.

19. The device of claim 1, wherein the collection container is configured to dispense the condensation water contained in the rinsing chamber from the downpipe and onto the evaporator at a flow of at least 75 liters per minute.

20. The device of claim 1, wherein the rinsing chamber and the storage chamber are positioned laterally adjacent to one another.

21. The device of claim 1, wherein the partition wall extends vertically from the bottom of the collection container.

22. The device of claim 1, further comprising an actuation pin, wherein the actuation pin is positioned such that an end of the actuation pin contacts an end of the support pin opposite the closure plate to push the closure plate into the open position.

23. The device of claim 22, further comprising a bistable spring configured to operate the actuation pin to displace the support pin and the closure plate and open the outlet of the rinsing chamber.

24. The device of claim 23, further comprising a thermal or magnetic relay coupled to the bistable spring and configured to actuate the bistable spring.

25. The device of claim 23, further comprising an actuation device,

wherein the control device is configured to control the actuation device to operate the bistable spring for opening and closing the closure plate.

26. The device of claim 25, wherein the actuation pin, the bistable spring, and the actuation device are separated from the flow of condensation water from the rinsing chamber to the downpipe.

27. The device of claim 1, wherein the support pin is dimensioned such that an end of the support pin opposite the closure plate does not extend out from the opening in the closed position.

28. The device of claim 1, further comprising a sealing disk positioned to form a seal between the outlet and the downpipe.

29. A household appliance for treatment of laundry, comprising:

an evaporator configured to condense condensation water from process air;

a drum to contain the laundry during treatment;

at least one process air duct connecting the drum and the evaporator; and

the device of claim 1.

30. A method for cleaning an evaporator of a condenser with condensation water, the method comprising:

acquiring condensation water from air in a process air circuit from drying moist laundry;

collecting the condensation water in a condensation water pan;

feeding the condensation water to a rinsing chamber of a collection container, the collection container located above the evaporator; and

opening a closure plate with a control device to dispense a flow of condensation water from the rinsing chamber and through an outlet of the rinsing chamber to a downpipe and onto the evaporator, the closure plate being positioned on the collection container to cover the outlet in a closed position of the closure plate,

wherein the collection container further comprises a storage chamber configured to receive condensation water overflowing from the rinsing chamber, and

wherein the collection container further comprises a partition wall extending between the rinsing chamber and the storage chamber from a bottom of the collection container, and

wherein the closure plate further comprises a support pin extending from a bottom side of the closure plate into an opening in the bottom of the collection container to lift the closure plate into an open position, the opening being separate from the outlet such that the support pin is separated from a flow path of the flow of condensation water flowing from the outlet to the downpipe.

31. The method of claim 30, further comprising dispensing pressurized mains water onto the evaporator from above.

32. The method of claim 30, further comprising:

removing the collection container from a receiving device; and

draining the condensation water by emptying the collection container.

33. The method of claim 30, further comprising draining the condensation water by draining or pumping the condensation water into a waste water catching device.

34. The method of claim 30, wherein dispensing of the condensation water is at a constant flow rate during dispensing.

35. The method of claim 30, further comprising dispensing the condensation water from a rinsing nozzle of the downpipe located at a fixed position relative to an inlet area of the process air into the evaporator.

36. The method of claim 30, further comprising dispensing the condensation water from a rinsing nozzle of the downpipe by moving the rinsing nozzle between a first position proximal to an evaporator inlet and a second position proximal to an evaporator outlet.

37. The method of claim 30, further comprising pumping the condensation water from the condensation water pan to the collection container.

38. The method of claim 30, wherein the rinsing chamber is shaped and dimensioned to contain 2.5 liters of condensation water.

39. The method of claim 30, further comprising supplying pressurized mains water to the downpipe from a mains water line such that the downpipe dispenses the pressurized mains water onto the evaporator from above.

40. The method of claim 39, further comprising controlling the supplying of the pressurized mains water to the downpipe with the control device.

41. The method of claim 30, further comprising receiving condensation water overflowing from the storage chamber in an overflow container.

42. The method of claim 41, further comprising directing condensation water from the overflow container to the condensation water pan with a return channel.

43. The method of claim 30, wherein the collection container further comprises peripheral walls, the partition wall being lower in height than the peripheral walls.

44. The method of claim 43, wherein the partition wall has a height such that condensation water overflows into the storage chamber when the rinsing chamber contains 2.5 liters of water.

45. The method of claim 32, wherein the closure plate is attached to the collection container such that the closure plate is removed with the collection container.

46. The method of claim 32, wherein the collection container further comprises a grip for removal of the collection container from the receiving device.

47. The method of claim 30, further comprising dispensing the condensation water from the rinsing chamber, through the downpipe, and onto the evaporator at a flow rate of at least 75 liters per minute.

48. The method of claim 30, further comprising dispensing the condensation water from the rinsing chamber, through the downpipe, and onto the evaporator within a duration of 2 seconds or less.

49. The method of claim 30, wherein the rinsing chamber and the storage chamber are positioned laterally adjacent to one another.

50. The method of claim 30, wherein the partition wall extends vertically from the bottom of the collection container.

51. The method of claim 30, wherein opening the closure plate further comprises pushing the closure plate into the open position by contacting an end of an actuation pin with an end of the support pin opposite the closure plate.

52. The method of claim 51, further comprising actuating the actuation pin with a bistable spring to open the closure plate.

53. The method of claim 52, wherein actuating the bistable spring comprises actuating the bistable spring with one of a thermal relay and an electromagnetic relay.

54. The method of claim 52, further comprising opening and closing the closure plate by controlling an actuation device with the control device to operate the bistable spring and actuate the actuation pin.

55. The method of claim 54, wherein the actuation pin, the bistable spring, and the actuation device are separated from the flow of condensation water from the rinsing chamber to the downpipe.

56. The method of claim 30, wherein the support pin is dimensioned such that an end of the support pin opposite the closure plate does not extend out from the opening in the closed position.

57. The method of claim 30, further comprising a sealing disk positioned to form a seal between the outlet and the downpipe.