Fast clothes dryer and drying method

• US 20060254082A1
• Filed: 11/21/2003
• Published: 11/16/2006
• Est. Priority Date: 11/22/2002
• Status: Abandoned Application

• Current Assignee: Su Heon Kim
• Original Assignee: Su Heon Kim
• Inventors: Kim, Su Heon
• Application Number:
  US10/535,789
• Publication Number:
  US 20060254082A1
• Time in Patent Office: Days
• US Class Current: 34/595
• CPC Class Codes: D06F 58/02 having dryer drums rotating about a horizontal axis
• CPC Class Codes: D06F 58/30 Drying processes controlling a series of operations in domestic laundry dryers D06F58/32

Abstract

A fast clothes dryer (10) is provided and has a blower (32) located after the dryer lint trap (19) to recover air, boost its velocity and then distribute it throughout the dryer, includes the dryer door (12), dryer fins (28) and dryer circumference. If additional drying is desired, the recovered air can be dehumidified before it is distributed throughout the dryer (10). The inclusion of just one of these features, the air flow through the dryer door (12) can cut drying time from say 20 minutes to 15 minutes, with less wrinkling. The dryer and method use cold air to dry clothes without shrinkage, and to avoid tumbling at initial stages of drying. The clothes may be initially dried at a warm temperature and at a speed high enough to prevent mechanical tumbling for a first period (say 20 minutes) using rotation first in one then the other direction. Then, when partially dry, cold dehumidified air is used with a lower drum rotation speed to permit very gentle tumbling with the drum rotation varying In directions for a second period of say 15 minutes. Thereafter, the clothes may be normally dried at a normal temperature and medium drum speed until done, say for another 10 to 15 minutes.

Claims

1. A clothes dryer, including a housing, a dryer door, a dryer drum, a heat source, comprising a means for recovering air after it leaves the dryer drum, a means for increasing the velocity of the recovered air, means for distributing the recovered air including duct means for supplying air to the periphery of the drum and means for removing moisture from the recovered air before distributing the recovered air, whereby the dryer will dry clothes quickly.

2. A clothes dryer as in claim 1, wherein said duct means distributes recovered air to the circumference of said dryer drum.

3. A clothes dryer as in claim 2, wherein said duct means also distributes recovered air by said dryer door.

4. A clothes dryer as in claim 3, wherein said duct means distributes recovered air through said dryer door.

5. A clothes dryer as in claim 1, wherein said duct means distributes recovered air by said dryer door.

6. A clothes dryer as in claim 5, wherein said duct means distributes recovered air through said dryer door.

7. A clothes dryer as in claim 1, further comprising a distribution header for distributing recovered air.

8. A clothes dryer as in claim 7, further comprising one or more ducts connected to said distribution header.

9. A clothes dryer as in claim 8, further comprising two or more ducts connected to said distribution header.

10. A clothes dryer as in claim 1, wherein said means for increasing the velocity of the recovered air comprises a driven blower.

11. A clothes dryer as in claim 1, wherein said dryer has a motor, and said driven blower is driven by said motor.

12. A clothes dryer as in claim 1, wherein said dryer has at least two motors, one for driving said drum and the other for driving said blower.

13. A clothes dryer as in claim 1, wherein said means for removing moisture is a heat exchange.

14. A clothes dryer as in claim 13, wherein said heat exchanger has a cold fluid circulated therein to cool the recovered air to remove the moisture therein.

15. A clothes dryer as in claim 14, wherein said heat exchanger is externally supplied with cold fluid.

16. A clothes dryer as in claim 14, wherein said heat exchanger forms part of a cooling unit.

17. A clothes dryer as in claim 16, wherein said cooling unit is a refrigeration means.

18. A clothes dryer as in claim 1, wherein said means for removing moisture is a refrigeration means.

19. A clothes dryer as in claim 1, wherein said means for removing moisture is an air cooling means including at least one of:

an air conditioner, refrigerator, circulated cold fluid, cold water and ice water.

20. A clothes dryer as in claim 3, wherein said duct means further comprising a distribution header for distributing recovered air, further comprising two or more ducts connected to said distribution header, said means for increasing the velocity of the recovered air comprises a driven blower, said dryer has at least two motors, one for driving said drum and the other for driving said blower, said means for removing moisture is a heat exchange, said heat exchanger has a cold fluid circulated therein to cool the recovered air to remove the moisture therein.

21. A clothes dryer as in claim 20, wherein said means for removing moisture is an air cooling means including at least one of:

an air conditioner, refrigerator, circulated cool fluid, cold water and ice water.

22. A clothes dryer, including a housing, a dryer door, a dryer drum, a heat source, a lint trap, comprising a means for recovering air after the lint trap, a means for increasing the velocity of the recovered air, means for distributing the recovered air including at least two of the following:

a) first duct means for supplying air axially through the dryer door,

b) second duct means for supplying air to the outer periphery of the drum,

c) third duct means for supplying air to the circumference of the dryer, and

d) means for removing moisture from the recovered air before distributing the recovered air,

whereby the dryer will dry clothes quickly.

23. A method for drying clothes using a dryer having a heat source, a dryer drum, a door for the dryer, a means for moving air from the heat source through the dryer drum, comprising the steps of

recovering at least some of the heated air after the dryer drum,

boosting the velocity of the recovered air,

distributing air to the periphery of the dryer drum, and

dehumidifying the recovered air before it is distributed to the dryer drum,

whereby clothes in the dryer can be quickly and efficiently dried.

24. A method as in claim 23, wherein said step of distributing air comprises the steps of delivering the recovered air to at least two different locations in said dryer drum.

25. A method as in claim 24, wherein said step of delivering the recovered air delivers air to three or more locations in said dryer drum.

26. A method as in claim 24, wherein said dryer includes a lint trap and the step of recovering air recovers air after said lint trap.

27. A method as in claim 23, wherein the step of boosting the velocity of the recovered air, includes the step of drawing the recovered air into a blower and blowing the recovered air.

28. A method as in claim 23, wherein the step of dehumidifying the recovered air includes the step of cooling the recovered air to remove moisture therein.

29. A method as in claim 23, wherein the step of removing the recovered air occurs prior to the step of dehumidifying the recovered air.

30. A method as in claim 23, wherein the step of dehumidifying the recovered air includes the step of air conditioning the recovered air.

31. A method as in claim 23, wherein the step of dehumidifying the recovered air includes the step of refrigerating the recovered air.

32. A method as in claim 24, wherein said step of delivering the recovered air delivers air to three or more locations in said dryer drum, said dryer including a lint trap and the step of recovering air recovers air after said lint trap, the step of boosting the velocity of the recovered air, includes the step of drawing the recovered air into a blower and blowing the recovered air.

33. A method as in claim 32, wherein the step of dehumidifying the recovered air includes the step of cooling the recovered air to remove moisture therein, the step of removing the recovered air occurs prior to the step of dehumidifying the recovered air, and the step of dehumidifying the recovered air includes the step of one of air conditioning the recovered air and refrigerating the recovered air.

34. A method for drying clothes using a dryer having a heat source, a dryer drum, a door for the dryer, a lint trap, a means for moving air from the heat source through the dryer drum, and through the lint trap, comprising the steps of:

recovering at least some of the heated air after the lint trap,

boosting the velocity of the recovered air, and

distributing the recovered air to at least two of the following;

distributing air axial into the dryer drum through the dryer door,

distributing air to the center periphery of the dryer drum,

distributing air to the circumference of the dryer drum, and

dehumidifying the recovered air before it is distributed to the dryer drum,

whereby clothes in the dryer can be quickly and efficiently dried.

35. A clothes dryer having a dryer drum and a door for closing the dryer, means provided for circulating drying air, means for selectively turning the dryer drum:

so that clothes therein do not tumble and so that clothes do tumble.

36. A clothes dryer as in claim 35, wherein said means for selectively turning the dryer drum operates at at least two different speeds.

37. A clothes dryer as in claim 35, wherein said means for selectively turning the dryer drum has a slow speed, a medium speed and a high speed.

38. A clothes dryer as in claim 37, said slow speed permits said clothes to gently tumble, said medium speed is for conventional tumbling, and said high speed is to prevent said clothes from tumbling.

39. A clothes dryer as in claim 35, further comprising control means for automatically controlling said means for selectively turning the dryer drum.

40. A clothes dryer as in claim 38, further comprising control means for automatically controlling said means for selectively turning the dryer drum to first said high speed to permit drying without tumbling, then to said slow speed to permit drying with gentle tumbling, and to said medium speed to permit conventional tumbling and drying.

41. A clothes dryer as in claim 35, having means for heating the drying air and means for cooling the drying air.

42. A clothes dryer as in claim 41, said means for heating the drying air being utilized when said means for selectively turning the dryer drum is turning so that the clothes do not tumble.

43. A clothes dryer as in claim 41, wherein said means for cooling the drying air is utilized when the clothes are gently tumbled.

44. A clothes dryer as in claim 43, wherein said dryer drum can be tumbled at a conventional speed and at a slower speed, and said means for cooling air is utilized when said dryer drum turns at said slower speed.

45. A clothes dryer as in claim 44, wherein after said dryer turns a said slow speed it then turns at said conventional speed and said means for heating the drying air is utilized.

46. A clothes dryer as in claim 45, wherein said dryer drum is turned at high speed in one direction then turned at high speed in the opposite direction.

47. A clothes dryer as in claim 46, wherein the reversals of turning are repeated.

48. A clothes dryer as in claim 45, wherein said dryer drum is turned at slow speed in one direction and then turned at slow speed in the opposite direction.

49. A clothes dryer as in claim 48, wherein the reversals of turning are repeated.

50. A clothes dryer as in claim 35, including means for recovering some of the air from the dryer drum and recirculating the recovered air.

51. A clothes dryer as in claim 50, further including a blower for moving the recovered air.

52. A clothes dryer as in claim 50, including means for dehumidifying the recovered air.

53. A clothes dryer as in claim 52, wherein said means for dehumidifying includes a heat exchanger in the path of the recovered air.

54. A clothes dryer as in claim 53, wherein said heat exchanger is supplied with a cold fluid by one of refrigeration, air conditioner, cold water and ice water.

55. A clothes dryer as in claim 37, said slow speed permits said clothes to gently tumble, said medium speed is for conventional tumbling, and said high speed to prevent said clothes from tumbling, control means for automatically controlling said means for selectively turning the dryer drum to first said high speed to permit drying without tumbling, then to said slow speed to permit drying with gentle tumbling, and to said medium speed to permit conventional tumbling, means for heating the drying air and means for cooling the drying air, said means for heating the drying air being utilized when said means for selectively turning the dryer drum is turning so that the clothes do not tumble, means for cooling the drying air is utilized when the clothes are tumbled, and after said dryer turns a said slow speed it then turns at said conventional speed and said means for heating air is utilized.

56. A clothes dryer as in claim 55, wherein said dryer drum is turned at high speed in one direction then turned at high speed in the opposite direction, wherein the reversals in direction are repeated, said drying drum is then turned at slow speed in one direction and then turned at slow speed in the opposite direction and said reversals of turning are repeated, including means for recovering some of the air from the dryer drum and recirculating the recovered air, a blower for moving the recovered air, means for dehumidifying the recovered air, including a heat exchanger in the path of the recovered air, said heat exchanger being supplied with a cold fluid by one of, refrigeration, air conditioner, cold water, ice water.

57. A method of drying clothes without shrinking, comprising first drying the clothes without tumbling, drying the clothes with cold air with gentle tumbling and drying the clothes with warm air.

58. A method as in claim 57, wherein when drying the clothes without tumbling supplying warm air for drying the clothes.

59. A method as in claim 57, wherein when drying the clothes in the dryer drum without tumbling turning the dryer drum in one direction then the other.

60. A method as in claim 59, wherein the reversal of directions are repeated.

61. A method as in claim 59, wherein the drying without tumbling is carried on for about 1 to 4 minutes before reversing direction.

62. A method as in claim 57, wherein after drying without tumbling the clothes are gently tumbled.

63. A method as in claim 57, when gently tumbling supplying cold air to dry the clothes.

64. A method as in claim 63, including the step of supplying the cold air at 50°

F. or less.

65. A method as in claim 64, including supplying the cold air at about 40°

F.

66. A method as in claim 57, including the steps of moving the clothes at high speed so they do not tumble, then a slow speed so they gently tumble, and then at medium speed where they conventionally tumble.

67. A method as in claim 66, including the step of drying the clothes with warm air when moving at high speed and medium speed and drying the clothes with cold air when moving at slow speed.

68. A method as in claim 67, including the steps of supplying air at about 120°

F. or above for providing warm air and supplying air at about 50°

F. or less for providing cold air.

69. A method as in claim 58, when drying the clothes without tumbling the clothes are placed in a dryer drum, and turning the dryer drum in one direction then the other, repeating the reversal of directions, the drying without tumbling is carried on for about 15 to 25 minutes, after drying without tumbling the clothes are gently tumbled, when gently tumbling supplying cold air to dry the clothes, supplying the cold air at 50°

F. plus or minus 15°

F.

70. A method as in claim 69, including supplying the cold air at about 50°

F. to 35°

F. and supplying warm air at about 100°

F. to 135°

F.

71. A drying method for drying clothes comprising:

a) drying the clothes with warm air without tumbling,

b) drying the clothes with cold air with gentle tumbling, and

c) drying the clothes with warm air at a higher speed to provide more tumbling than during gentle tumbling.