Water-carrying household appliance having an automatic dosing system, and method for automatic dosing

• US 9,334,602 B2
• Filed: 09/30/2009
• Issued: 05/10/2016
• Est. Priority Date: 10/07/2008
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Inventors: Hasse, Torsten, Sabalat, Andre, Schulze, Ingo
• Primary Examiner(s): Ko, Jason
• Assistant Examiner(s): Bell, Spencer
• Application Number:
  US13/119,531
• Publication Number:
  US 20110186098A1
• Time in Patent Office: 2,414 Days
• Field of Search: 134/56.R
• US Class Current: 1/1
• CPC Class Codes: D06F 33/37 of metering of detergents or additives
• CPC Class Codes: D06F 39/022 in a liquid state D06F39/024 takes precedence

Abstract

A water-carrying household appliance is provided that has a housing; a treatment chamber; and an automatic dosing system within the housing. The automatic dosing system has a reservoir for a liquid treatment agent and a delivery pump within the reservoir. The household appliance further includes a controller to control the automatic dosing system.

Claims

1. A water-carrying household appliance, comprising:

a housing;

a treatment chamber within the housing;

a manual dosing chamber a) in fluid communication with the treatment chamber and b) located within the housing, wherein the manual dosing chamber does not include a pump;

an automatic dosing system a) in fluid communication with the treatment chamber and b) located within the same region of the housing as the manual dosing chamber, the automatic dosing system having;

a reservoir for a liquid treatment agent;

a removable lid configured to cover an entirety of the reservoir;

a delivery pump supported by the lid so that the delivery pump is removable with the lid, an exterior of the delivery pump being configured to be in direct contact with the liquid treatment agent in the reservoir; and

a controller to control the automatic dosing system,

wherein the manual dosing chamber and the automatic dosing system are located in a common dispensing drawer.

2. The water-carrying household appliance of claim 1, wherein the automatic dosing system comprises the manual dosing chamber.

3. The water-carrying household appliance of claim 1, wherein the automatic dosing system has two reservoirs.

4. The water-carrying household appliance of claim 3, wherein the two automatic dosing system reservoirs are fluidly connected to a common outlet duct.

5. The water-carrying household appliance of claim 4, further comprising a water supply line that feeds into the common outlet duct defined by the automatic dosing system reservoirs.

6. The water-carrying household appliance of claim 3, wherein the removable lid is configured to cover an entirety of both automatic dosing system reservoirs.

7. The water-carrying household appliance of claim 1, wherein the automatic dosing system is arranged in a detachable manner within the housing, and wherein the automatic dosing system is removable from the housing.

8. The water-carrying household of claim 1, wherein the delivery pump is arranged in a detachable manner within the reservoir, and wherein the delivery pump is removable from the reservoir.

9. The water-carrying household appliance of claim 1, wherein the delivery pump is an immersion pump.

10. The water-carrying household appliance of claim 1, further comprising a plurality of delivery pumps, wherein each of the plurality of delivery pumps is removable individually.

11. The water-carrying household appliance of claim 1, wherein the household appliance is a washing machine having a treatment agent drawer, and wherein the automatic dosing system is in the treatment agent drawer.

12. The water-carrying household appliance of claim 11, wherein the automatic dosing system comprises the manual dosing chamber and two reservoirs.

13. The water-carrying household appliance of claim 1, wherein the delivery pump has a suction side, which is positioned in the interior of the reservoir, and a delivery side, which opens into an outlet duct.

14. The water-carrying household appliance of claim 1, wherein the delivery pump is a gear pump.

15. The water-carrying household appliance of claim 1, wherein the delivery pump has a direct current drive.

16. The water-carrying household appliance of claim 15, wherein the direct current drive is operated in a low-voltage range.

17. The water-carrying household appliance of claim 1, wherein the reservoir defines a continuous space and is configured to hold the liquid treatment agent.

18. The water-carrying household appliance of claim 17, wherein the automatic dosing system further comprises a lid configured to cover the reservoir, the lid having a fill opening.

19. The water-carrying household appliance of claim 18, wherein the delivery pump is configured to convey the liquid treatment agent to an outlet duct in communication with the treatment chamber.

20. The water-carrying household appliance of claim 19, wherein the automatic dosing system comprises a plurality of reservoirs, and at least two reservoirs are in communication with the outlet duct.

21. The water-carrying household appliance of claim 20, wherein the automatic dosing system comprises a plurality of delivery pumps, each pump being associated with a corresponding one of said plurality of reservoirs.

22. The water-carrying household appliance of claim 21, wherein an exterior of each of said plurality of delivery pumps is configured to be in direct contact with the liquid treatment agent.

23. The water-carrying household appliance of claim 21, wherein each of said plurality of delivery pumps is suspended from an underside of the removable lid.

24. The water-carrying household appliance of claim 22 further comprising a water supply line in communication with the outlet duct.

25. The water-carrying household appliance of claim 24, wherein each of said plurality of delivery pumps is fluidly connected to the outlet duct.

26. The water-carrying household appliance of claim 1, further comprising a control panel with a user input and a display, wherein the automatic dosing system is located adjacent the control panel.

27. The water-carrying household appliance of claim 1, wherein the reservoir is distinct from the manual dosing chamber.

28. The water-carrying household appliance of claim 1, wherein the manual dosing chamber is in close proximity to the automatic dosing system.

29. The water-carrying household appliance of claim 1, wherein the manual dosing chamber and the reservoir share a common wall.

30. The water-carrying household appliance of claim 1, wherein the manual dosing chamber is on the same side of the treatment chamber as the reservoir.

31. The water-carrying household appliance of claim 1, wherein a main body of the delivery pump is arranged on a base of the reservoir when the removable lid covers the reservoir.

32. The water-carrying household appliance of claim 1, wherein the delivery pump is supported entirely from the underside of the removable lid.

33. The water-carrying household appliance of claim 1, wherein the removable lid has openings separate from the delivery pump for refilling the reservoir without removing the lid or the delivery pump from the reservoir.

34. The water-carrying household appliance of claim 1, wherein the automatic dosing system further comprises an outlet duct configured to receive a discharge from the delivery pump, and the lid and the delivery pump are configured so that securing the lid to the reservoir automatically aligns an outlet of the delivery pump with the outlet duct.

35. The water-carrying household appliance of claim 1, wherein the common dispensing drawer is located above the treatment chamber.

36. A method for automatic dosing of a treatment agent in a water-carrying household appliance having a housing;

a treatment chamber;

a manual dosing chamber located within the housing and in fluid communication with the treatment chamber wherein the manual dosing chamber does not include a pump, an automatic dosing system located within the same region of the housing as the manual dosing chamber, wherein the automatic dosing system has a reservoir for a liquid treatment agent, a removable lid configured to cover an entirety of the reservoir, a delivery pump suspended from an underside of the removable lid, an exterior of the delivery pump being configured to be in direct contact with the liquid treatment agent in the reservoir; and

a controller to control the automatic dosing system, wherein the manual dosing chamber and the automatic dosing system are located in a common dispensing drawer;

the method comprising;

i) determining a type and a desired quantity of the liquid treatment agent to be dosed;

ii) driving the delivery pump assigned to the liquid treatment agent to be dosed;

iii) determining a supplied actual quantity of the liquid treatment agent to be dosed during step ii);

iv) comparing the supplied actual quantity of the liquid treatment agent with the desired quantity determined in step i); and

v) switching off the delivery pump when the desired quantity determined in step i) is reached.

37. The method of claim 36, wherein the delivery pump has a rotationally operated delivery unit, and wherein in step iii) the supplied actual quantity of the liquid treatment agent is detected by measuring rotations of the delivery unit of the delivery pump.

38. The method of claim 37, wherein a number of the rotations of a direct current drive is measured in step iii).

39. The method of claim 38, wherein the number of the rotations of a pump drive is determined from a signal profile of the pump drive.