Thermal receptacle with phase change material
First Claim
1. A liquid receptacle for rapidly lowering the temperature of a liquid contained therein to a warm range suitable for human contact and maintaining the liquid in the warm range for an extended period of time, said receptacle comprising:
- an inner vessel having an open upper end and closed lower end and a wall connecting the upper end and the lower end;
a one piece insulated outer shell spaced from the inner vessel defining an interstitial chamber therebetween, the outer shell including an inner layer and an outer layer with an evacuated void therebetween for vacuum insulating the outer shell; and
a phase change material disposed within the chamber for regeneratively absorbing thermal energy from the liquid and then releasing the thermal energy to the liquid to maintain the temperature of the liquid.
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Abstract
A liquid receptacle for rapidly lowering the temperature of a liquid contained therein to a warm range suitable for human contact and maintaining the liquid in the warm range for an extended period of time includes an inner vessel with an open upper end and a closed lower end and a wall connecting the upper and lower end. An insulated outer shell is spaced from the inner vessel to define an interstitial chamber between the inner vessel and the outer shell. A phase change material occupies the chamber and regeneratively absorbs thermal energy from the liquid to cool the liquid and then releases the thermal energy back to the liquid to maintain the temperature of the liquid.
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Citations
33 Claims
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1. A liquid receptacle for rapidly lowering the temperature of a liquid contained therein to a warm range suitable for human contact and maintaining the liquid in the warm range for an extended period of time, said receptacle comprising:
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an inner vessel having an open upper end and closed lower end and a wall connecting the upper end and the lower end; a one piece insulated outer shell spaced from the inner vessel defining an interstitial chamber therebetween, the outer shell including an inner layer and an outer layer with an evacuated void therebetween for vacuum insulating the outer shell; and a phase change material disposed within the chamber for regeneratively absorbing thermal energy from the liquid and then releasing the thermal energy to the liquid to maintain the temperature of the liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A liquid receptacle for rapidly lowering the temperature of a hot beverage contained therein to a warm range suitable for human consumption and maintaining the liquid in the warm range for an extended period of time, said receptacle comprising:
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an inner vessel having an open upper end and closed lower end and a wall connecting the upper end and the lower end, the upper end terminating in a rim; a one piece insulated outer shell spaced from the inner vessel defining an interstitial chamber therebetween, the outer shell having an inner surface and an outer surface and an upper edge terminating in a lip for drinking; the inner surface of the outer shell having a circumferential outwardly extending recess defined therein, the recess being spaced from the lip; the rim of the inner vessel being in sealing engagement with the recess in the inner surface of the outer shell and spaced from the lip of the outer shell for preventing contact between the inner vessel and the mouth of a consumer of liquid from the receptacle; and a phase change material disposed within the chamber for regeneratively absorbing thermal energy from the beverage and then releasing the thermal energy to the beverage to maintain the temperature of the liquid. - View Dependent Claims (16, 17, 18)
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19. A liquid receptacle for rapidly lowering the temperature of a hot beverage contained therein to a warm range suitable for human consumption and maintaining the liquid in the warm range for an extended period of time, said receptacle comprising:
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an inner vessel having an open upper end and closed lower end and a wall connecting the upper end and the lower end, the upper end terminating in a bulbous lip; an insulated outer shell spaced from the inner vessel defining an interstitial chamber therebetween, the outer shell having an inner surface and an outer surface and an upper edge terminating in a lip for drinking; the inner surface of the outer shell having a circumferential outwardly extending arched recess defined therein, the recess being spaced from the lip; the lip of the inner vessel being in sealing engagement with the recess in the inner surface of the outer shell and spaced from the lip of the outer shell for preventing contact between the inner vessel and the mouth of a consumer of liquid from the receptacle; and a phase change material disposed within the chamber for regeneratively absorbing thermal energy from the beverage and then releasing the thermal energy to the beverage to maintain the temperature of the liquid. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A liquid receptacle for rapidly lowering the temperature of a liquid contained therein to a warm range suitable for human contact and maintaining the liquid in the warm range for an extended period of time, said receptacle comprising:
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an inner vessel having an open upper end and closed lower end and a wall connecting the upper end and the lower end; an insulated outer shell spaced from the inner vessel defining an interstitial chamber therebetween, the outer shell including an inner layer and an outer layer with an evacuated void therebetween for vacuum insulating the outer shell, the outer layer of the outer shell forming at least part of the outer surface of the liquid receptacle; and a phase change material disposed within the chamber for regeneratively absorbing thermal energy from the liquid and then releasing the thermal energy to the liquid to maintain the temperature of the liquid.
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Specification