Dispenser assemblies and systems including a heat storage unit

• US 20050011883A1
• Filed: 06/25/2004
• Published: 01/20/2005
• Est. Priority Date: 06/27/2003
• Status: Active Grant

• Current Assignee: SC Johnson & Son Incorporated
• Original Assignee: SC Johnson & Son Incorporated
• Inventors: Leonard, Stephen, Mather, David, Ablah, Amil, Clothier, Brian
• Granted Patent: US 7,227,108 B2
• Time in Patent Office: Days
• US Class Current: 219/618
• CPC Class Codes: F28D 20/0056 using solid heat storage material F28D20/0052 takes precedence
• CPC Class Codes: H05B 6/62 Apparatus for specific applications
• CPC Class Codes: H05B 6/802 for heating fluids methods of heating fluids in conventional microwave ovens H05B6/687
• CPC Class Codes: Y02E 60/14 Thermal energy storage

Abstract

A heat storage unit (2) includes a body having a passage (12) formed therein through which a flowable product passes. A heatable element (10) is incorporated within the body of the heat storage unit (2) in thermal communication with the passage (12). Meanwhile, a heat-retentive material (8) is in thermal communication with the heatable element (10). The heatable element (10) includes either a magnetically-compatible material or a microwave-compatible material that is heated by locating the heatable element in a field (F) generated by a charging device (6), for example.

Claims

1. A heat storage unit, comprising:

a body having a passage formed therein through which a flowable product passes;

a heatable element incorporated within the body in thermal communication with the passage, the heatable element comprising either a magnetically-compatible material or a microwave-compatible material; and

a heat-retentive material in thermal communication with the heatable element, the heat-retentive material comprising a solid-to-solid phase change material.

2. The heat storage unit of claim 1, wherein the heatable element comprises a magnetically-compatible material that is heatable by locating the heatable element in a magnetic field.

3. The heat storage unit of claim 2, wherein the magnetic field is generated external to the heat storage unit, and the heat storage unit does not include any components for generating a magnetic field to heat the heatable element.

4. The heat storage unit of claim 2, wherein the heat storage unit is cordless.

5. The heat storage unit of claim 2, further comprising:

an induction coil incorporated within the body in proximity to the heatable element; and

a pair of electrical contacts accessible from the exterior of the body, each contact being electrically connected to a respective end of the induction coil.

6. The heat storage unit of claim 2, wherein the heatable element comprises a ferromagnetic material.

7. The heat storage unit of claim 6, wherein the heatable element comprises stainless steel.

8. The heat storage unit of claim 6, wherein the heatable element comprises a temperature sensitive alloy.

9. The heat storage unit of claim 2, wherein the heatable element comprises a graphite-based material.

10. The heat storage unit of claim 1, wherein the heatable element comprises a microwave-compatible material that is heatable by exposing the heatable element to microwave radiation.

11. The heat storage unit of claim 1, wherein the passage in the body comprises an inlet for receiving the flowable product into the body, an outlet for directing the discharge of the flowable product from the body, and a reservoir located between the inlet and the outlet, the reservoir being sized to accommodate at least one dose of the flowable product.

12. The heat storage unit of claim 1, wherein the passage in the body is circuitous, such that the passage is at least twice as long as any dimension of the body.

13. The heat storage unit of claim 1, wherein the heat-retentive material comprises a polyethylene resin and at least one additive.

14. The heat storage unit of claim 13, wherein the at least one additive is selected from the group consisting of structural additives, thermal conductivity additives, antioxidants, and combinations thereof.

15. The heat storage unit of claim 1, further comprising an identification device applied to or incorporated within the body, the identification device storing information about the heat storage unit or about a flowable product used therewith.

16. The heat storage unit of claim 15, wherein the identification device is a radio frequency identification tag.

17. The heat storage unit of claim 1, wherein the body is configured as a cartridge that is detachably securable to each of a plurality of different flowable product dispensers.

18. The heat storage unit of claim 1, wherein the body is configured as an overcap that is detachably securable to an aerosol container.

19. The heat storage unit of claim 18, wherein the heatable element defines a reservoir within the body that is sized to accommodate at least one dose of the flowable product.

20. The heat storage unit of claim 19, wherein the heat-retentive material comprises a sleeve that lines at least a portion of the interior of the reservoir.

21. The heat storage unit of claim 18, wherein the heat-retentive material defines a reservoir within the body that is sized to accommodate at least one dose of the flowable product.

22. The heat storage unit of claim 21 wherein the heatable element comprises a sleeve that lines at least a portion of the exterior of the reservoir.

23. The heat storage unit of claim 21, wherein the heatable element comprises a porous, mesh-like, magnetically-compatible material that is disposed within the reservoir.

24. The heat storage unit of claim 18, wherein the heatable element and the heat-retentive material are configured as an extruded sleeve in which the heatable element is sandwiched between layers of the heat-retentive material, and the sleeve defines a reservoir within the body that is sized to accommodate at least one dose of the flowable product.

25. The heat storage unit of claim 1, wherein the body is configured as a porous pad having incorporated therein a burstable pouch containing the flowable product.

26. The heat storage unit of claim 25, wherein the body includes a plurality of passages through which the flowable product passes, and the heatable element is in thermal communication with each of the plurality of passages.

27. A dispenser assembly, comprising:

the heat storage unit of claim 1;

a container to which the heat storage unit is detachably secured such that an opening in the container is in flow communication with the passage in the body of the heat storage unit; and

an actuator for selectively dispensing the flowable product from the container, through the passage in the body of the heat storage unit, and out of an exit opening of the dispenser assembly.

28. The dispenser assembly of claim 27, further comprising a pumping mechanism for drawing the flowable product out of the container.

29. The dispenser assembly of claim 27, wherein the container is an aerosol container, and the heat storage unit is configured as an overcap for the container.

92. The dispenser assembly of claim 27, wherein the container includes a radio frequency identification tag.

93. The system of claim 1, wherein the charging device includes a detection device that detects when an object having a radio frequency identification tag with particular information stored therein is docket with the charging device, and the charging device only generates the field when an object having a radio frequency identification tag with the particular information stored therein is detected.

30. A heat storage unit for heating a flowable product, the heat storage unit comprising:

a body having a passage formed therein through which a flowable product passes;

a heatable element incorporated within the body in thermal communication with the passage, the heatable element comprising either a magnetically-compatible material or a microwave-compatible material that is heatable by locating the heatable element in a field generated external to the heat storage unit; and

a heat-retentive material that lines at least a portion of the passage and which is in thermal communication with the heatable element,

wherein the heat storage unit does not include any components for generating a field to heat the heatable element.

31. The heat storage unit of claim 30, wherein the heat storage unit is cordless.

32. The heat storage unit of claim 30, wherein the heatable element comprises a magnetically-compatible material that is heatable by locating the heatable element in a magnetic field.

33. The heat storage unit of claim 32, wherein the heatable element comprises a ferromagnetic material.

34. The heat storage unit of claim 33, wherein the heatable element comprises stainless steel.

35. The heat storage unit of claim 33, wherein the heatable element comprises a temperature sensitive alloy.

36. The heat storage unit of claim 32, wherein the heatable element comprises a graphite-based material.

37. The heat storage unit of claim 30, wherein the heatable element comprises a microwave-compatible material that is heatable by exposing the heatable element to microwave radiation.

38. The heat storage unit of claim 30, wherein the passage in the body comprises an inlet for receiving the flowable product into the body, an outlet for directing the discharge of the flowable product from the body, and a reservoir located between the inlet and the outlet, the reservoir being sized to accommodate at least one dose of the flowable product.

39. The heat storage unit of claim 30, wherein the passage in the body is circuitous, such that the passage is at least twice as long as any dimension of the body.

40. The heat storage unit of claim 30, wherein the heat-retentive material comprises a solid-to-solid phase change material.

41. The heat storage unit of claim 40, wherein the heat-retentive material comprises a polyethylene resin and at least one additive.

42. The heat storage unit of claim 41, wherein the at least one additive is selected from the group consisting of structural additives, thermal conductivity additives, antioxidants, and combinations thereof.

43. The heat storage unit of claim 30, wherein the heat-retentive material has a specific heat of at least about 0.4 calories per gram-degree Celsius.

44. The heat storage unit of claim 30, wherein the heat-retentive material has a specific heat of at least about 0.5 calories per gram-degree Celsius.

45. The heat storage unit of claim 30, wherein the heat-retentive material comprises a polymer selected from the group consisting of polyethylene, polypropylene, and nylon.

46. The heat storage unit of claim 30, further comprising an identification device applied to or incorporated within the body, the identification device storing information about the heat storage unit or about a flowable product used therewith.

47. The heat storage unit of claim 46, wherein the identification device is a radio frequency identification tag.

48. The heat storage unit of claim 30, wherein the body is configured as a cartridge that is detachably securable to each of a plurality of different flowable product dispensers.

49. The heat storage unit of claim 30, wherein the body is configured as an overcap that is detachably securable to an aerosol container.

50. The heat storage unit of claim 38, wherein the reservoir is defined by the heat-retentive material, and the heatable element comprises a sleeve that lines at least a portion of the exterior of the reservoir.

51. The heat storage unit of claim 38, wherein the reservoir is defined by the heat-retentive material, and the heatable element comprises a porous, mesh-like, magnetically-compatible material that is disposed within the reservoir.

52. The heat storage unit of claim 38, wherein the reservoir is defined by the heatable element, and the heat-retentive material comprises a sleeve that lines at least a portion of the interior of the reservoir.

53. The heat storage unit of claim 38, wherein the reservoir is defined by an extruded sleeve in which the heatable element is sandwiched between layers of the heat-retentive material.

54. A pad for heating and dispensing a flowable product, the pad comprising:

a porous body comprising a heat-retentive material and either a magnetically-compatible material or a microwave-compatible material; and

a burstable pouch containing the flowable product, the burstable pouch being incorporated within the porous body in thermal communication with the magnetically-compatible material or the microwave-compatible material,

wherein the flowable product is dispensed from the porous body by compressing the burstable pouch.

55. The pad of claim 54, wherein the porous body comprises at least one layer of a magnetically-compatible graphite-based material that is sandwiched between layers of the heat-retentive material.

56. The pad of claim 54, wherein the porous body comprises flakes of a magnetically-compatible graphite-based material incorporated within the heat-retentive material.

57. The pad of claim 54, wherein the heat-retentive material comprises a solid-to-solid phase change material.

58. The pad of claim 54, wherein the heat-retentive material has a specific heat of at least about 0.4 calories per gram-degree Celsius.

59. The pad of claim 54, wherein the heat-retentive material has a specific heat of at least about 0.5 calories per gram-degree Celsius.

60. The pad of claim 54, wherein the heat-retentive material comprises a polymer selected from the group consisting of polyethylene, polypropylene, and nylon.

61. A system, comprising:

a heat storage unit, comprising (i) a body having a passage formed therein, (ii) a heatable element incorporated within the body in thermal communication with the passage, the heatable element comprising either a magnetically-compatible material or a microwave-compatible material, and (iii) a heat-retentive material in thermal communication with the heatable element; and

a charging device to which the heat storage unit is detachably docked such that, when the heat storage unit is docked with the charging device and the charging device is activated, a field is generated that encompasses the heatable element of the heat storage unit, thereby raising the temperature of the heatable element.

62. The system of claim 61, wherein the heatable element comprises a magnetically-compatible material, and the charging device includes an induction coil for generating a magnetic field.

63. The system of claim 62, wherein the charging device further comprises a control device for controlling the induction coil to selectively generate the magnetic field.

64. The system of claim 63, wherein the control device automatically activates the induction coil to generate the magnetic field when the heat storage unit is docked with the charging device.

65. The system of claim 62, wherein the charging device further comprises an activator switch for manually activating the charging device to generate the magnetic field.

66. The system of claim 62, wherein the heatable element comprises a ferromagnetic material.

67. The system of claim 66, wherein the heatable element comprises stainless steel.

68. The system of claim 66, wherein the heatable element comprises a temperature sensitive alloy.

69. The system of claim 62, wherein the heatable element comprises a graphite-based material.

70. The system of claim 61, wherein the heatable element of the heat storage unit is a magnetically-compatible material, and the heat storage unit further comprises (i) an induction coil incorporated within the body in proximity to the heatable element, and (ii) a pair of electrical contacts accessible from the exterior of the body, with each contact being electrically connected to a respective end of the coil, and wherein the charging device includes a pair of corresponding electrical contacts that electrically connect to the pair of electrical contacts on the heat storage unit when the heat storage unit is docked with the charging device.

71. The system of claim 61, wherein the heatable element of the heat storage device is a microwave-compatible material, and the charging device includes a microwave-generating device.

72. The system of claim 61, wherein the heat storage unit further comprises an identification device that stores information about the heat storage unit or about a flowable product used therewith, and wherein the charging device includes a detection device that detects the information stored by the identification device.

73. The system of claim 72, wherein the identification device is a radio frequency identification tag.

74. The heat storage unit of claim 61, wherein the passage in the body of the heat storage unit comprises an inlet for receiving a flowable product into the body, an outlet for directing the discharge of the flowable product from the body, and a reservoir located between the inlet and the outlet, the reservoir being sized to accommodate at least one dose of the flowable product.

75. The heat storage unit of claim 61, wherein the passage in the body of the heat storage unit is circuitous, such that the passage is at least twice as long as any dimension of the body.

76. The system of claim 61, wherein the heat-retentive material is a solid-to-solid phase change material.

77. The system of claim 76, wherein the heat-retentive material comprises a polyethylene resin and at least one additive.

78. The system of claim 77, wherein the at least one additive is selected from the group consisting of structural additives, thermal conductivity additives, antioxidants, and combinations thereof.

79. The system of claim 61, wherein the heat-retentive material has a specific heat of at least about 0.4 calories per gram-degree Celsius.

80. The system of claim 61, wherein the heat-retentive material has a specific heat of at least about 0.5 calories per gram-degree Celsius.

81. The system of claim 61, wherein the heat-retentive material comprises a polymer selected from the group consisting of polyethylene, polypropylene, and nylon.

82. The system of claim 61, wherein the heat storage unit is configured as a cartridge that is detachably securable to each of a plurality of different flowable product dispensers.

83. The system of claim 61, wherein the heat storage unit is configured as an overcap that is detachably securable to an aerosol container.

84. The system of claim 61, wherein the heat storage unit is configured as a porous pad.

94. The system of claim 73, wherein the radio frequency identification tag signals the charging device to generate the field.

85. A method of manufacturing a heat storage unit, comprising the steps of:

a first molding step of molding a heat-retentive body;

a second molding step of molding a heatable element of either magnetically-compatible material or microwave-compatible material in thermal communication with the heat-retentive body,

wherein, during one of said first and second molding steps, a passage is formed through the heat storage unit to define a flow path for a flowable product.

86. A method according to claim 85, wherein the first and second molding steps are carried out simultaneously, such that the heat-retentive body and the heatable element are molded together as a uniform mixture of heatable and heat-retentive material.

87. A method according to claim 85, wherein the first molding step comprises injection molding and the passage is formed through the heat-retentive body during the first molding step, and the second molding step is performed subsequently to the first molding step, such that the heatable element is over-molded around at least a portion of the exterior of the heat-retentive body.

88. A method according to claim 87, wherein the first molding step comprises molding the heat-retentive body in two halves, and wherein, prior to the second molding step, the method comprises the step of bonding the two halves of the heat-retentive body together.

89. A method according to claim 85, wherein the second molding step comprises injection molding and the passage is formed through the heatable element during the second molding step, and the first molding step is performed subsequently to the first molding step, such that the heat-retentive body is over-molded around at least a portion of the exterior of the heatable element.

90. A method according to claim 89, wherein the second molding step comprises molding the heatable element in two halves, and wherein, prior to the first molding step, the method further comprises the step of bonding the two halves of the heatable element together.

91. A method according to claim 85, further comprising the step of over-molding an insulating layer at least partially about the outside of the heat storage unit.