Device for determining type and dampness of textiles, appliances applying the device, method for detecting type and dampness of textiles, and method for determining a filling level of a container

• US 6,784,997 B2
• Filed: 06/20/2002
• Issued: 08/31/2004
• Est. Priority Date: 12/20/1999
• Status: Expired due to Term

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Bosch und Siemens Hausgerã¤Te GmbH (Robert Bosch GmbH)
• Inventors: Reitmeier, Willibald, Lorenz, Tilmann, Sams, Walter
• Primary Examiner(s): Font, Frank G.
• Assistant Examiner(s): Punnoose, Roy M.
• Application Number:
  US10/177,681
• Publication Number:
  US 20030019253A1
• Time in Patent Office: 803 Days
• Field of Search: 356/429, 356/432, 356/445, 68/120.5
• US Class Current: 356/429
• CPC Class Codes: D06F 2101/02 Characteristics of laundry or load
• CPC Class Codes: D06F 2103/04 Quantity, e.g. weight or variation of weight
• CPC Class Codes: D06F 2103/06 Type or material
• CPC Class Codes: D06F 2103/08 Humidity
• CPC Class Codes: D06F 2103/64 Radiation, e.g. microwaves
• CPC Class Codes: D06F 2105/02 Water supply
• CPC Class Codes: D06F 2105/42 Detergent or additive supply
• CPC Class Codes: D06F 2105/56 Remaining operation time; Remaining operational cycles
• CPC Class Codes: D06F 2105/58 Indications or alarms to the control system or to the user
• CPC Class Codes: D06F 33/36 of washing
• CPC Class Codes: D06F 34/18 Condition of the laundry, e.g. nature or weight
• CPC Class Codes: D06F 58/38 of drying, e.g. to achieve the target humidity

Abstract

A device detects properties of a textile in appliances for treating textiles is provided. The device is fitted into the appliance. Examples of appliances with which the device can be used include washing machines, laundry dryers, spin dryers, machines for dry cleaning, and machines for dying textiles. The device includes sending element and a receiving element respectively for sending and receiving electromagnetic radiation. The receiving element is connected to an evaluation circuit. The evaluation circuit evaluates the radiation reflected and/or transmitted by the textile to render properties and composition of the textile and filling level of the appliance.

Claims

1. In combination with an appliance having a drum for holding textiles, a device for detecting properties of the textiles, the device comprising:

a sending element for sending electromagnetic radiation to a textile item;

a receiving element for receiving electromagnetic radiation from the textile item; and

an evaluation circuit connected to said receiving element and evaluating the electromagnetic radiation received by said receiving element.

2. The device according to claim 1, wherein said receiving element receives electromagnetic radiation reflected by the textile item.

3. The device according to claim 1, wherein said receiving element receives electromagnetic radiation transmitted through the textile item.

4. The device according to claim 1, wherein:

the drum holds the textile item;

said sending element irradiates electromagnetic radiation into the drum to the textile item; and

said receiving element receives electromagnetic radiation from the textile item loaded in the drum.

5. The device according to claim 4, wherein said sending element and said receiving element are disposed in the drum.

6. The device according to claim 5, wherein:

the drum has a loading opening; and

at least one of said sending element and said receiving element are disposed by the loading opening.

7. The device according to claim 6, wherein:

the drum has an upper side; and

at least one of said sending element and said receiving element are disposed by the upper side.

8. The device according to claim 5, wherein:

the drum has a base; and

at least one of said sending element and said receiving element is attached to the base of the drum.

9. The device according to claim 5, wherein:

the drum has a loading door with an inner side; and

at least one of said sending element and said receiving element is on the loading door.

10. The device according to claim 1, wherein said sending element is a broadband emitter.

11. The device according to claim 10, wherein said broadband emitter is selected from the group consisting of an incandescent bulb, a halogen lamp, and a light-emitting diode.

12. The device according to claim 1, wherein said receiving element is a narrowband receiver.

13. The device according to claim 12, wherein said narrowband receiver is selected from the group consisting of a photodiode and a phototransistor.

14. The device according to claim 1, wherein said receiving element is formed as an array including a plurality of receiving components.

15. The device according to claim 6, wherein the at least one of said sending element and said receiving element disposed by the loading opening is formed with an optical component.

16. The device according to claim 15, wherein said optical component is a focusing lens coupling the electromagnetic radiation in and out.

17. The device according claim 6, wherein said receiving element breaks down spectrally the received electromagnetic radiation with a filter selected from the group consisting of an optical filter, a graduated filter, a diffraction grating, and a prism.

18. The device according to claim 6, wherein at least one of said sending element and said receiving element is equipped with an optical waveguide for coupling up or coupling in the electromagnetic radiation.

19. The device according to claim 1, further comprising a control circuit connected to said evaluation circuit.

20. The device according to claim 19, further comprising a memory for storing calibration data connected to at least one of said evaluation circuit and said control circuit.

21. The device according to claim 20, wherein the calibration data is selected from the group consisting of predetermined spectra and measured spectra.

22. The device according to claim 1, wherein at least one of said sending element and said receiving element is equipped with a soiling protector.

23. The device according to claim 22, wherein said soiling protector is formed by an air stream.

24. The device according to claim 23, further comprising a flow duct connected to the drum;

and said air stream is circulating air fed from said flow duct.

25. The device according to claim 23, wherein said air stream is air sucked from outside the drum.

26. The device according to claim 19, wherein at least one of said evaluation circuit and said control circuit utilize artificial intelligence selected from the group consisting of fuzzy logic and a neural network.

27. The device according to claim 1, wherein said receiving element is an array including a plurality of receiving components.

28. A washing machine for washing textiles according to detected properties of the textiles, the washing machine comprising:

a drum; and

a device connected to said drum for detecting properties of a textile item including a sending element for sending electromagnetic radiation to the textile item, a receiving element for receiving electromagnetic radiation from the textile item, and an evaluation circuit connected to said receiving element and evaluating the electromagnetic radiation received by said receiving element.

29. A laundry dryer for drying textiles according to detected properties of the textiles, the laundry dryer comprising:

a drum; and

a device connected to said drum for detecting properties of a textile item including a sending element for sending electromagnetic radiation to the textile item, a receiving element for receiving electromagnetic radiation from the textile item, and an evaluation circuit connected to said receiving element and evaluating the electromagnetic radiation received by said receiving element.

30. A spin dryer for drying textiles according to detected properties of the textiles, the spin dryer comprising:

a drum; and

a device connected to said drum for detecting properties of a textile item including a sending element for sending electromagnetic radiation to the textile item, a receiving element for receiving electromagnetic radiation from the textile item, and an evaluation circuit connected to said receiving element and evaluating the electromagnetic radiation received by said receiving element.

31. A machine for dry cleaning textiles according to detected properties of the textiles, the machine comprising:

a drum; and

a device connected to said drum for detecting properties of a textile item including a sending element for sending electromagnetic radiation to the textile item, a receiving element for receiving electromagnetic radiation from the textile item, and an evaluation circuit connected to said receiving element and evaluating the electromagnetic radiation received by said receiving element.

32. A machine for dying textiles for drying textiles according to detected properties of the textiles, the machine comprising:

a drum; and

a device connected to said drum for detecting properties of a textile item including a sending element sending electromagnetic radiation to the textile item, a receiving element for receiving electromagnetic radiation from the textile item, and an evaluation circuit connected to said receiving element and evaluating the electromagnetic radiation received by said receiving element.

33. A method of detecting properties of textiles in an appliance, which comprises:

providing a container;

irradiating a textile item with electromagnetic radiation from a transmitting element;

receiving electromagnetic radiation from the textile item with a receiving element; and

evaluating the electromagnetic radiation received by the receiving element with an evaluation circuit.

34. The method according to claim 33, which further comprises selecting the appliance from the group consisting of a washing machine, a laundry dryer, a spin dryer, and a machine for dry cleaning, and a machine for dying textiles.

35. The method according to claim 33, wherein the receiving step further comprises receiving reflected electromagnetic radiation from the textile item.

36. The method according to claim 33, wherein the receiving step further comprises receiving transmitted electromagnetic radiation from the textile item.

37. The method according to claim 33, which further comprises determining chemical properties of the textile item from the received electromagnetic radiation.

38. The method according to claim 33, which further comprises determining wetness of the textile item from the received electromagnetic radiation.

39. The method according to claim 33, which further comprises determining a fill level of the drum by evaluating the radiation received by the receiving element.

40. A method of detecting properties of textiles in a washing machine, which comprises:

providing a container;

irradiating a textile item with electromagnetic radiation from a transmitting element;

receiving electromagnetic radiation from the textile item with a receiving element; and

evaluating the electromagnetic radiation received by the receiving element with at least one of an evaluation circuit and a control unit to determine properties of the textile item; and

determining washing properties with at least one of the evaluation circuit and the control unit based upon the determined properties of the textile item, energy consumption, water consumption, type of detergent, amount of detergent, type of mechanical treatment, and duration of treatment.

41. A method of detecting properties of textiles in a laundry dryer, which comprises:

providing a container;

irradiating a textile item with electromagnetic radiation from a transmitting element;

receiving electromagnetic radiation from the textile item with a receiving element; and

evaluating the electromagnetic radiation received by the receiving element with at least one of an evaluation circuit and a control unit to determine properties of the textile item; and

determining drying properties with at least one of the evaluation circuit and the control unit based upon the determined properties of the textile item, drying power used, and drying duration or the washing process in a washing machine is ascertained with regard to energy consumption, water consumption, the type and amount of detergent and the type of mechanical treatment and also the duration of treatment.

42. In combination with an appliance having a loading door with an inner side and a drum for holding textiles, the drum having a loading opening, an upper side, and a base, a device for detecting properties of the textiles, the device comprising:

a transmitting element for transmitting electromagnetic radiation to a textile item;

a receiving element for receiving electromagnetic radiation from the textile item; and

an evaluation circuit connected to said receiving element and evaluating the electromagnetic radiation received by said receiving element, at least one of said transmitting element and said receiving element being disposed by one of the group consisting of;

a region of the loading opening;

the upper side of the loading opening;

the base of the drum; and

the inner side of the door.

43. The device according to claim 42, wherein said receiving element receives electromagnetic radiation reflected by the textile item.

44. The device according to claim 42, wherein said receiving element receives electromagnetic radiation transmitted through the textile item.

45. The device according to claim 42, wherein:

the drum holds the textile item therein;

said transmitting element irradiates electromagnetic radiation into the drum to the textile item; and

said receiving element receives electromagnetic radiation from the textile item loaded in the drum.

46. The device according to claim 42, wherein said transmitting element is a broadband emitter.

47. The device according to claim 46, wherein said broadband emitter is selected from the group consisting of a light bulb, a halogen lamp, and a light-emitting diode.

48. The device according to claim 42, wherein said receiving element is a narrowband receiver.

49. The device according to claim 48, wherein said narrowband receiver is selected from the group consisting of a photodiode and a phototransistor.

50. The device according to claim 42, wherein at least one of said transmitting element and said receiving element has an optical component.

51. The device according to claim 50, wherein said optical component is a focusing lens coupling electromagnetic radiation.

52. The device according to claim 51, wherein:

said transmitting element has a focusing lens coupling out electromagnetic radiation; and

said receiving element has a focusing lens coupling in electromagnetic radiation.

53. The device according claim 42, wherein said receiving element has a filter selected from the group consisting of an optical filter, a graduated filter, a diffraction grating, and a prism for spectrally resolving the received electromagnetic radiation.

54. The device according to claim 42, wherein at least one of said transmitting element and said receiving element has an optical waveguide at least one of coupling and feeding in the electromagnetic radiation.

55. The device according to claim 42, further comprising a control circuit connected to said evaluation circuit.

56. The device according to claim 55, further comprising a memory for storing calibration data connected to at least one of said evaluation circuit and said control circuit.

57. The device according to claim 56, wherein the calibration data is selected from the group consisting of predetermined spectra and measured spectra.

58. The device according to claim 42, wherein at least one of said transmitting element and said receiving element has a soiling protector.

59. The device according to claim 58, wherein said soiling protector is formed by an air stream.

60. The device according to claim 59, further comprising a flow duct connected to the drum, said air stream being circulating air fed from said flow duct.

61. The device according to claim 59, wherein said air stream is air drawn in from outside the drum.

62. The device according to claim 55, wherein at least one of said evaluation circuit and said control circuit utilize artificial intelligence selected from the group consisting of fuzzy logic and a neural network.

63. A method of detecting properties of textiles in an appliance, which comprises:

providing a container;

irradiating a textile item with electromagnetic radiation from at least one transmitting element;

receiving electromagnetic radiation at least one of reflected and transmitted by the textile item with at least one receiving element;

evaluating the electromagnetic radiation received by the receiving element with an evaluation circuit; and

obtaining, with the evaluation circuit, characteristics of the textile with respect to a degree of wetting by a liquid dependent upon the evaluated electromagnetic radiation received.

64. The method according to claim 63, which further comprises selecting the appliance from the group consisting of a washing machine, a laundry dryer, a spin dryer, a machine for dry cleaning, and a machine for dying textiles.

65. The method according to claim 63, which further comprises determining, with the evaluation circuit, a chemical composition of the textile item from the received electromagnetic radiation.

66. The method according to claim 63, which further comprises:

carrying out the evaluating step by evaluating the electromagnetic radiation received by the receiving element with at least one of an evaluation circuit and a control unit to determine properties of the textile item; and

dependent upon the detected characteristics of the textile item, determining with at least one of the evaluation circuit and the control unit at least one of;

washing properties selected from at least one of the group consisting of energy consumption, water consumption, type of detergent, amount of detergent, type of mechanical treatment, and duration of treatment; and

drying properties selected from at least one of the group consisting of drying power used and drying duration.

67. The method according to claim 63, which further comprises determining, with the evaluation circuit, a fill level of the drum by evaluating electromagnetic radiation at least one of reflected and transmitted by the textile item.

68. A method of determining a degree of filling in a laundry drum of a laundry treatment apparatus, which comprises:

irradiating an interior space of the drum containing at least one textile item with electromagnetic radiation from at least one transmitting element;

receiving electromagnetic radiation at least one of reflected from and transmitted by the textile with at least one receiving element; and

determine a degree of filling of the drum with the evaluation circuit by;

determining a first property with respect to an amount and a proportion of electromagnetic radiation at least one of reflected and absorbed by walls of the drum;

determining a second property with respect to a degree of electromagnetic radiation at least one of reflected and transmitted by the textile item; and

comparing the first and second properties to ascertain the degree of filling of the drum.