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 said upper end and said lower end said wall having an outward taper such that said upper end has a width greater than a width of said lower end;
an insulated outer shell spaced from said inner vessel defining an interstitial chamber therebetween, said outer shell having an outer wall and an inner surface spaced from the outer wall with a foam insulating layer disposed between said inner surface and outer wall, said foam layer having an inner surface defining at least a portion of said inner surface of said outer shell; and
a phase change material disposed within said 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.
151 Citations
17 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 said upper end and said lower end said wall having an outward taper such that said upper end has a width greater than a width of said lower end;
an insulated outer shell spaced from said inner vessel defining an interstitial chamber therebetween, said outer shell having an outer wall and an inner surface spaced from the outer wall with a foam insulating layer disposed between said inner surface and outer wall, said foam layer having an inner surface defining at least a portion of said inner surface of said outer shell; and
a phase change material disposed within said 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)
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6. 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 said upper end and said lower end, said upper end terminating in a rim;
an insulated outer shell spaced from said inner vessel defining an interstitial chamber therebetween;
said outer shell having an inner surface and an outer surface and an upper edge terminating in a lip for drinking, said outer shell further having an insulating layer disposed between said inner and outer surfaces, said inner surface having a circumferential outwardly extending recess defined therein, said recess being spaced from said lip;
said rim of said inner vessel being in sealing engagement with said recess in said inner surface of said outer shell and spaced from said lip of said outer shell for preventing contact between said inner vessel and the mouth of a consumer of liquid from said receptacle; and
a phase change material disposed within said 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 (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification