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Thermal receptacle with phase change material containing insert

a technology of phase change material and thermoplastic, which is applied in the direction of domestic cooling apparatus, packaging goods type, lighting and heating apparatus, etc., can solve the problems of diluting hot beverages, burning to the mouth, and burning to the skin, and achieves the effect of high demand for hot beverages

Inactive Publication Date: 2013-10-03
WILLIAMS PRESTON NOEL +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a reusable beverage container that can rapidly cool down a hot liquid, such as coffee, to a safe temperature and then maintain it at that temperature for an extended period of time without needing external energy or manipulation by the user. The container uses a phase change material that absorbs and releases thermal energy from the liquid to achieve this cooling and maintenance. The invention has a wide range of applications, including use in desk-based industries and in portable settings. Overall, the invention provides a better experience for hot beverage consumption by allowing them to cool quickly and maintain a safe temperature.

Problems solved by technology

Some impatient consumers will attempt to drink the beverage too soon resulting in burns to the mouth.
Similarly, if the drink is spilled before it has had sufficient time to cool, burns to the skin may result.
This approach rapidly cools the beverage but dilutes the hot beverage.
This is frequently undesirable.
This approach is often inconvenient and imprecise; if the person adds too little or too much, the temperature of the hot beverage will be higher or lower than desired and may require further attention.
Finally, this approach does not provide any assistance in maintaining the temperature of the hot beverage in the acceptable drinking temperature range.
Once the beverage reaches an acceptable temperature, it will continue to lose thermal energy to its surroundings.
This results in the beverage becoming cool too quickly.
This approach suffers from some of the same limitations as adding cool liquid or ice.
If the cup is too cool or too warm or has too much or too little thermal mass, the beverage will stabilize at the wrong temperature.
Also, while a heavy container will slow the rate of cooling somewhat due to the increase in the total thermal mass of the system, the effect will be small and the beverage will only remain in the ideal drinking range for a short period.
These approaches slow the cooling rate of the beverage.
However, the ability of the insulated mugs currently on the market to maintain beverage temperatures is relatively limited.
Stainless, vacuum insulated mugs are excellent at maintaining temperature, but no product currently exists which can passively cool a hot beverage quickly.
Insulation does not provide a way to add thermal energy back to the beverage.

Method used

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  • Thermal receptacle with phase change material containing insert
  • Thermal receptacle with phase change material containing insert
  • Thermal receptacle with phase change material containing insert

Examples

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Embodiment Construction

[0024]One embodiment of the present invention is a coffee cup. Such an embodiment can be used for coffee or any liquid that is desired to be brought into and maintained within a desired temperature range. The cup rapidly cools the coffee or liquid by employing phase change materials (PCMs) to help manage the temperature of the coffee. The phase change materials are placed within an insert adapted to be inserted into the cup. Additional phase change materials can be placed inside the cup walls, such as disclosed in U.S. Pat. No. 6,634,417, incorporated herein by reference.

[0025]Cup embodiments of the present invention include phase change material in an insert or inserts designed to be placed within the interior of the liquid cavity of the cup. The insert can be of several different designs but each design increases the amount of surface area that is between the coffee and the PCM (as compared to PCM in the walls of the cup alone) thereby increasing the thermal transfer between the h...

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Abstract

A thermal receptacle having a side wall which has an inner surface and a spaced outer surface. An interstitial chamber may be defined by the space between the inner and outer surfaces. A phase change material containing insert is provided into the receptacle. The insert contains a phase change material or a plurality of different phase change materials. Phase change material may also be located within the interstitial chamber. The phase change material regeneratively absorbs thermal energy from a hot liquid in the receptacle thereby rapidly lowering the temperature of the liquid and then the material releases the thermal energy back to the liquid to maintain the temperature of the liquid.

Description

RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application Ser. No. 61 / 583,888, filed Jan. 6, 2012, and incorporated herein by reference.TECHNICAL FIELD[0002]The subject invention relates generally to liquid receptacles or containers and more specifically to a receptacle having a phase change material insert and which rapidly cools a hot liquid (or heats a cold liquid) to a desired range and then maintains the fluid in the desired range for an extended period.BACKGROUND OF THE INVENTION[0003]There have been many attempts in the past to maintain liquids and solids within certain temperature ranges. Hot beverages are usually prepared and served at temperatures well above the desired temperature range of consumption. Typically, the consumer must wait some time before the beverage to sufficiently cool before drinking it. Some impatient consumers will attempt to drink the beverage too soon resulting in burns to the mouth. Similarly, if the drink is spil...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D81/18
CPCF25D3/08B65D81/18F25D31/007F25D2303/0842F25D2331/803
Inventor WILLIAMS, PRESTON NOELLINDQUIST, ERIC ROBERTSUTTERLIN, WILLIAM RUSTYHAUN, LUKE
Owner WILLIAMS PRESTON NOEL
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