JP7360402B2 - Self-cooling device and method - Google Patents

Description

FIELD OF THE INVENTION The present invention relates generally to techniques for cooling food and beverage food containers and processes for manufacturing such food containers. More specifically, the present invention relates to food and beverage containers for cooling food products such as beverages, methods of cooling such food products, and methods of assembling and operating the apparatus. The terms "beverage," "food," "food product," and "food container contents" are considered equivalent for the purposes of this application and are used interchangeably. The term "food container" refers to any closed, retractable storage means for food intended for consumption.

Many self-cooling beverage and food container devices have existed for some time for cooling the contents of beverage or other food and beverage containers. These devices may use flexible, deformable receptacles or rigid receptacle sides to store refrigerant for phase change cooling. Some prior art devices use a desiccant with a vacuum operating to evaporate water at low pressure and absorb the vapor into the desiccant. Other conventional devices use refrigerant stored in a liquid phase between pressure vessels to achieve cooling by phase changing the refrigerant from a liquid to a gaseous state. The inventors have invented a variety of such devices and methods of manufacturing them. Some conventional self-cooling food container technologies rely on evaporation of the refrigerant from the liquid phase to the gas phase. Some rely solely on desiccants. Desiccant technology relies on the thermodynamic potential of the desiccant to absorb water from the gas phase into the desiccant to achieve evaporation of water in a vacuum. These early inventions did not meet all the needs of the beverage industry and did not use electrogenic heat transport means to cool beverages. In fact, they are so structurally different from the present invention that a person skilled in the art would not be able to go beyond the prior art to the present invention without an inventive process. In an effort to find a cost-effective and functional device for self-cooling beverage food containers, the inventors conducted various experiments to arrive at the present novel method. The following issues make cost-effective commercialization of all prior art devices very high.

Prior art techniques using liquefied refrigerants fail to address the practical problems of manufacturing and beverage plant operations that are essential to the success of self-cooling food container programs. Some such prior art designs require pressurized food containers to store liquid refrigerant. The only liquid refrigerants that can be stored between commercially viable pressure canisters are HFCS, CFCS, hydrocarbons, ethers, and other highly flammable low pressure gases. These gases are not commercially viable, making implementation of such technology difficult. Most commercial refrigerants are ozone depleting and global warming and are therefore prohibited by the US EPA and other governing bodies from being released directly into the atmosphere as products in self-cooling food containers. The EPA mandates that no refrigerants, other than _CO2 , be used in self-cooling food containers, and if they are used, the design must be safe. Currently available refrigerants cause both global warming and ozone layer depletion. Typically, it is a common refrigerant such as 134a or 152a. In some cases, flammable gases such as butane and propane have been tried, but they pose a high risk factor for several reasons. First, using such technology in a closed room can result in various effects such as suffocation, poisoning, etc. Second, the flammability of some refrigerants limits the number of food containers that can be opened in a closed environment such as a putty or inside a car. The inventor has several patents relating to these prior art techniques and has experimented with some of these techniques and found them not suitable for commercial viability. Furthermore, the cost of refrigerants is very high and the cost of cooling does not justify the use of refrigerant gas.

Examples of inventions that use pressurized gas include U.S. Pat. No. 3,241,731, No. 8,033,132, No. 4,319,464, No. 3,852,975, No. 4,669,273, No. 3,494,141 No. 3,520,148, No. 3,636,726, No. 3,759,060, No. 3,597,937, No. 4,584,848, No. 3 , 417,573, 3,468,452, 654,174, 1,971,364, 5,655,384, 5,063,754, No. 3,919,856, No. 4,640,102, No. 3,881,321, No. 4,656,838, No. 3,862,548, No. 4,679, No. 407, No. 4,688,395, No. 3,842,617, No. 3,803,867, No. 6,170,283, No. 5,704,222, and others. Found in many.

Prior art techniques using cryogenic refrigerants, such as _CO2 , fail to address the practical problems of manufacturing and beverage plant operations that are essential to the success of self-cooling food container programs. All such prior art designs require very high pressure food containers to store cryogenic refrigerants. Some technologies promising the use of _CO2 implement carbon traps such as activated carbon or fullerene nanotubes to store the refrigerant in a carbon matrix. These added desiccant and activated carbon storage systems are too expensive to implement commercially, and furthermore, the carbon and other absorbent media that reduce pressure can contaminate the beverage product. Therefore, there is a need to reduce the amount of such chemicals required. Cryogenic self-cooling food containers, which require very high-pressure containers and the use of cryogenic gases such as _CO2 , require expensive food containers made of high-pressure bearing materials such as aluminum, steel, and fiberglass. be. They are inherently dangerous because the pressures involved are typically on the order of 600 psi or more. They are also complex because the pressures involved are much higher than traditional food containers can withstand. Examples of such prior art include U.S. Patent No. 5,331,817; No. 183, and the devices disclosed in U.S. Pat. No. 4,993,236.

Desiccant-based self-cooling food containers require the desiccant to be stored between pre-created vacuums. When the vacuum is broken between the two compartments, water vapor is drawn into the vacuum and absorbed into the desiccant, taking heat of vaporization away from the cooled item and condensing within the desiccant. The heat taken away by the evaporated water heats the desiccant but is not allowed to interact with the beverage. Otherwise, it will heat the beverage again. Maintaining a true vacuum within the desiccant chamber and water reservoir is very difficult. Also, the valves and actuation devices used by the prior art require stiff pins, knives, etc. Vacuum conditions need to be maintained during long periods of storage and can be compromised. If moisture migrates to the desiccant, cooling capacity can be compromised. Additionally, handling desiccant crystals in the manner in which prior art designs are implemented, and powders in high-volume production environments where the desiccant must be maintained free of moisture and contaminants within pressurized beverage food containers, is extremely difficult. It is difficult to Therefore, better technology is required to handle these desiccants separately from food containers. The process itself is also inefficient and limited by the amount of desiccant used, since the heat absorption potential of the desiccant decreases once the vacuum is removed and evaporation begins.

Other fields also face problems posed by vacuum conditions, such as the difficulty of creating and maintaining them, and the lack of efficiency they create. An early example is found in Thomas A. Edison's evolution of the light bulb. His first practical incandescent lamp, which he patented in 1879, contained a carbonized bamboo filament contained within a vacuum glass bulb. It definitely propelled the world into a new era, but it was initially very inefficient. Then, in 1904, European inventors discovered that replacing the carbonized bamboo filament with tungsten, and in 1913, replacing the vacuum inside the light bulb with an inert dry gas doubled its luminous efficiency. Although the field was different from what it is today, and the technical problems presented were quite different, this is perhaps an example that suggests product efficiency was improved by replacing vacuum with dry gas.

Generally, these prior art techniques are not cost effective techniques and rely on very large and complex canister designs for the containers of the beverage and food products in which they are included. In fact, the desiccant to water ratio is about 3:1 and the volume loss ratio of such beverage food containers is about 40%. Desiccant or sorbent costs, food container costs, and manufacturing process costs are very high despite nearly 20 years of testing. Therefore, it would be advantageous to reduce the amount of these ingredients required and reengineer the manufacturing process to move the interior of food containers away from these chemicals.

Examples of devices using this technology include U.S. Patent Nos. 7,107,783; 6,389,839; 829,902,4, 462,224, 7,213,401, 4,928,495, 4,250,720, 2,144,441, No. 4,126,016, No. 3,642,059, No. 3,379,025, No. 4,736,599, No. 4,759,191, No. 3,316 , No. 736, No. 3,950,960, No. 2,472,825, No. 3,252,270, No. 3,967,465, No. 1,841,691, No. No. 2,195,0772, No. 322,617, No. 5,168,708, No. 5,230,216, No. 4,911,740, No. 5,233,836 , No. 4,752,310, No. 4,205,531, No. 4,048,810, No. 2,053,683, No. 3,270,512, No. 4, No. 531,384, No. 5,359,861, No. 6,141,970, No. 6,341,491, No. 4,993,239, No. 4,901,535, No. 4,949,549, No. 5,048,301, No. 5,079,932, No. 4,513,053, No. 4,974,419, No. 5,018 , No. 368, No. 5,035,230, No. 6,889,507, No. 5,197,302, No. 5,313,799, No. 6,151,911, No. No. 6,151,911, No. 5,692,381, No. 4,924,676, No. 5,038,581, No. 4,479,364, No. 4,368, No. 624, No. 4,660,629, No. 4,574,874, No. 4,402,915, No. 5,233,836, No. 5,230,216 let US Pat. No. 5,983,662 uses a sponge instead of a desiccant to cool the beverage.

The prior art also reveals self-cooling food containers that are chemically endothermic. These rely on absorbing heat from the contents of the food container using a fixed stoichiometric reaction of chemicals. U.S. Patent Nos. 3,970,068, 2,300,793, 2,620,788, 4,773,389, 3,561,424, 3, No. 950,158, No. 3,887,346, No. 3,874,504, No. 4,753,085, No. 4,528,218, No. 5,626,022, No. 6,103,280, and many others utilize endothermic reactions to remove heat from water to cool beverage and food containers.

Previous endothermic self-cooling food containers rely on a stoichiometric mixture of certain amounts of chemicals to achieve a certain amount of cooling. After the cooling process, the thermodynamic transport mechanism and cooling potential are eliminated and no further cooling occurs. The products of the reaction also remain as caustic and acidic components in the form of bases and acids that can be harmful. For example, US Patent Application Publication US2015/0354885AL shows a system for externally cooling a beverage containing a certain amount of beverage. The system includes a cooling housing having an inner wall and an outer wall, the inner wall being a thermally conductive material in contact with at least a portion of the beverage holder, and the cooling housing containing at least two separate substantially non-toxic reactants. defining an internal compartment containing reactants that, when reacting with each other, cause an irreversible entropy increasing reaction, wherein the irreversible entropy increasing reaction causes a chemical reaction at least three times greater than the stoichiometric number of said reactants. producing a stoichiometric number of substantially non-toxic products, wherein said at least two separate substantially non-toxic reactants are initially contained within said internal compartment separated from each other, said irreversible entropy When reacting with each other in an incremental reaction, they cause a heat drop of the beverage in the beverage holder. No recovery system is used to conserve the stoichiometry of the reactants, but the system uses the same type of endotherm disclosed in all prior art techniques that use a fixed cooling potential based on a fixed stoichiometry of the reactants. applicable to the system. Further cooling using electrogenic heat transport means is not disclosed.

Different from all the prior art mentioned above, the present invention provides a novel method for cooling beverages in food containers by updating the cooling potential of a given amount of reactants using dry gas electromotive force regeneration. Provides a cost-effective, thermodynamically simple and viable means of heat transport. Many trials and errors were made to obtain this configuration of the disclosed invention.

Generally related U.S. patents teaching reaction cooling include U.S. Pat. No. 4,319,464 to Dodd, issued March 1982; U.S. Pat. No. 267, U.S. Pat. No. 4,669,273 to Fischer et al., issued June 1987, U.S. Pat. U.S. Patent No. 5,44,7039 to Allison et al., issued December 1998; U.S. Patent No. 5,845,501 to Stonehouse et al., issued December 1998; No. 6,065,300, U.S. Patent No. 6,102,108 to Sillince, issued August 2000, U.S. Patent No. 6,105,384 to Joseph, issued August 2000, January 2002 US Pat. No. 6,341,491 to Paine et al., issued in November 2004, US Pat. No. 6,817,202, issued in November 2004, and US Pat. It will be done.

1.0 Disadvantages of the Prior Art Using Endothermic Cooling Systems a) Prior art endothermic cooling systems e.g. Therefore, the potential for solvation and subsequent cooling is limited. The water acts as a humidifying fluid that ionizes the chemicals, the ions utilize the energy of solvation, and as the solvent cools down, the process becomes energy starved, which exponentially speeds up the extraction process of solvation energy. Because they are slow, these techniques do not use the full potential of available solvation energy. For example, to cool a 16 ounce beverage by 30 degrees Fahrenheit requires at least 127 grams of potassium chloride to be dissolved in approximately 380 grams of water. This is not commercially viable with self-cooling food container technology relying solely on this process. The present invention overcomes this drawback with extremely dry gas. Dry gases with dew points of 10°F to -150°F can readily absorb vapor from liquids that have been cooled to freezing points. The dew point temperature of the drying gas itself simply increases, but the actual temperature of the drying gas itself remains constant.

b) Also, solutes used for endothermic cooling in solvents such as water require a stoichiometric molar ratio with water for cooling. In all prior art techniques, a fixed amount of cooling can be achieved by irreversibly combining a fixed amount of water with a fixed amount of ionizable compounds (eg chlorides and nitrates). Solvation products of endothermic reactants can result in acidic solutions and basic products such as hydrochloric acid and sodium hydroxide resulting from the dissolution of potassium chloride ions in water. The disadvantage of this is that it forces this water transition from a liquid state from a cold solution to a vapor state, dries the compound, offsets the stoichiometry of water to the compound used, and, in a reversible manner, solvates the compound. In order to renew the entropy increasing reaction in the compartment formed by the inner sleeve member with protrusions that can be cooled again by requiring more water to be solved by the drying gas acting as a medium . The protrusion allows one side of the inner sleeve member to hold the humidifying liquid and the other side of the inner sleeve member to function as a dry gas evaporator. The drying gas removes the heat of reformation of these solutes from the solution. This has the advantage of regenerating ionizable compounds that can be reionized reversibly due to endothermic reactions through desalination and salting out processes that can only occur with drying gases acting as intermediate transport vehicles for evaporation.

c) The prior art also requires the use of impermeable metals for the desiccant and water chambers due to the need to maintain a true vacuum over long periods of time. In the present invention, although aluminum may be used in the construction of the device according to the invention, the parts of the device surrounding the food are preferably injection molded, which are inexpensive materials that interact with standard aluminum or steel food containers. Made from heat-shrinkable plastic materials such as stretch-blown polyethylene tetraphthalate (PET) and shrinkable polyvinyl chloride (PVC). The implementation of such a material allows it to perform a mechanical function when exposed to heat of evaporation, increasing the volume of the drying gas chamber and reducing the constant volume of drying gas inside due to the shrinkable physical properties of the said material. By diluting the heat, it is possible to actually perform mechanical work from this heat.

d) Also, the manufacturing process of the food container is not affected by the method used to manufacture the device, as the food container itself is not modified in a destructible manner.

Thus, the present invention bypasses the stoichiometric limitations of common methods of cooling products by endothermic reactions, and also bypasses the need for true vacuum and other drawbacks, allowing We proceed directly to the properties of electrogenic steam and heat transport means that use dry gases in low vapor pressure conditions at low dew point temperatures, as well as the properties of the materials used that function in a beneficial manner.

2.0 Disadvantages of Prior Art Using Desiccant/Vacuum Cooling Systems a) Previous desiccant technologies require permanent true vacuum storage to provide cooling by evaporating water at low pressures. . The present invention bypasses this step of storing vacuum in the desiccant process and takes advantage of the physical properties of the materials used by the present invention to produce dilution of the drying gas only when necessary. The drying gas starts the process of evaporation, which is enhanced by the dilution of the drying gas. In most cases, the materials used to manufacture the invention are preferably combinations of heat-shrinkable plastic materials, such as injection-stretched, inexpensive materials that interact with standard aluminum or steel food containers. Made from a combination of blown heat-shrinkable polyethylene tetraphthalate (PET) and heat-shrinkable polyvinyl chloride (PVC). The implementation of such a heat-shrinkable material allows it to perform a mechanical function when exposed to the heat of evaporation, expanding the volume of the drying gas chamber and diluting the drying gas due to the shrinkable physical properties of said material. By producing heat, it is possible to actually perform mechanical work from this heat. Although aluminum can be used in many parts of the structure, certain functions used for drying gas dilution require such heat-shrinkable plastic materials.

b) Prior art desiccant processes also produce 100% partial vapor pressure of the evaporating agent, such as water, in the cooling chamber when a vacuum is exposed to the cooling chamber. This is problematic. The water vapor evaporated by the vacuum reduces the vacuum and stops the process until the desiccant again begins to reduce the vapor pressure within the cooling chamber. Therefore, this process depends on the rate of vapor absorption by the desiccant.

c) Also, the water vapor evaporated by the vacuum of the prior art can fill the cooling chamber, contact the cooling surfaces, condense and transfer the heat of condensation from one section of said cooling chamber to another. The minimum operating temperature for evaporative steam is 32° F., the freezing point of water. The drying gas system used by the present invention has a dew point temperature in the range of 10°F to -150°F below the freezing point of water, so evaporation of water vapor into the drying gas is prevented by cooling and icing. I can't do it. Although the dew point temperature of the drying gas increases due to evaporation, the cooling chamber is not heated.

d) Also, during the sorption reaction, the sorption material is heated by the heat of sorption, which significantly reduces the water sorption ability. The drying gas becomes even more hygroscopic when heated by removing heat from the vapor absorbing material and lowering the dew point temperature.

In the present invention, plastic heat shrink vapor absorption technology is used according to some embodiments of the invention. The drying gas is used to absorb humidifying liquid vapor from the compartment created by the internal sleeve member, which can be brought to ice-cold temperatures while lowering the dew point temperature (not the temperature) of the drying gas. Unlike conventional desiccant systems of the prior art, this humidifying liquid vapor is not readily available to cooling surfaces due to condensation. The humidifying liquid vapor is retained by the low vapor pressure of the drying gas and therefore does not condense on the cooling surface. A plastic heat shrink vapor absorber absorbs vapor from the drying gas, eliminating the need for a true vacuum. Therefore, any humidifying liquid can be used. For example, a humidifying liquid such as dimethyl ether can be used, which is a pressurized liquid, but can emit vapor that can be immediately absorbed by the drying gas. In a sense, the drying gas acts as an engine vapor pressure cascade conductor to move vapor from the liquid phase to the plastic heat-shrink vapor absorber using an electromotive potential. Unless the vapor is exposed to the cooling chamber, it will be absorbed by the plastic heat-shrink vapor absorber, which interacts more easily with the electrogenic properties of the drying gas than direct vapor. For example, a standard desiccant in an air conditioner using a desiccant wheel takes advantage of the drying gas to move and regenerate moisture. This is not done in a vacuum. The drying gas can be imagined to have intervening van der Waals forces that hold the vapor in a tightly confined intervening form, making the plastic heat shrink vapor absorber more suitable for absorbing it. . It has been found that smaller pore size molecular sieves can absorb vapor from the drying gas more easily than from direct absorption of the vapor itself. It is understood that polar vapor molecules tend to combine primarily electrically to form cascading chains towards regions of low vapor pressure, thus exhibiting fluid-like viscous behavior that dissolves polarity. I can explain if I do. The polarity of the humidifying liquid, such as water, is necessary to facilitate the desiccant absorption process. This is seen in non-polar gases, for example as double structures of common gases such as h ₂ , n ₂ , o ₂ . The drying gas suppresses this polarity and the normal static electricity associated with drying air to electrostatically drive the process is suppressed.

The present invention uses the heat of a plastic heat shrink vapor absorber to change its shape to create and produce dilution by increasing the volume of the drying gas chamber in which a certain amount of drying gas is stored. Specially designed plastic heat shrink vapor absorbent material to activate the physical properties of the chamber walls. Therefore, there is no need to store a permanent vacuum, and no true vacuum is required.

As an additional advantage, the present invention also provides a deformable simple sealing ring structure made of one of suitable O-ring seals, metal band seals, rubber band seals, putty seals, and sealing wax seals. Seals are used to actuate and perform the sealing function, and therefore the present invention does not require pins, knives and other methods to introduce water vapor into the plastic heat shrink vapor absorbent material, even if they are still used. Not necessarily necessary. There is no need to worry about vacuum loss during storage. Therefore, the plastic heat shrink vapor absorbers and subcategories of vapor absorbers used in the present invention need not have the highest affinity for the humidifying liquid vapor of the humidifying liquid used. Instead, they are optimized for delivery of the humidifying liquid vapor by dry gas. Thus, while the prior invention requires a finely tuned desiccant for pure vapor absorption, the present invention finely tunes the vapor absorbent for absorption of vapor from the drying gas.

Dry gases, such as substantially dry air, substantially dry CO ₂ , substantially dry nitrogen, and other substantially dry gases with very low dew point temperatures, are primarily caused by the humidity of the air and the atmosphere. can cause extreme cooling, as evidenced by the energy available within and the weather patterns driven by it. Not surprisingly, dry air can lead to dramatic snow and ice formations, resulting in extreme weather patterns around the world. It is no surprise that lip balms used for dry lips sell well in winter. From hurricanes to tornadoes, heavy snow storms, and winter ice storms, nature has created amazing electrogenic heat transporters that can be emulated to use air humidification and dehumidification to help cool beverages and food. We have been providing it. My theory is that a tornado's tremendous vacuum energy is the result of sudden condensation of water vapor due to dehumidification of humidified dry air. Water vapor has 1840 times the volume of liquid water of the same weight, so when a giant cloud condenses, the volume decreases significantly, resulting in a vacuum that looks like the funnel cloud of a tornado. Simple wind movement cannot generate such tremendous energy. Similarly, humidification of very dry air results in very low temperatures that cause snowstorms. This is because after moisture is absorbed into dry air and evaporates, removing heat from the surrounding environment, the same moist air becomes saturated and the vapor is deposited again as moisture in a cold environment as snow, which creates This is because hailstones are produced in cold environments.

Water has the best thermodynamic potential for cooling food. Because it has the highest heat of vaporization, it can be used in conjunction with electrogenic drying and regeneration processes that use water molecules to cool food containers. However, since water has a high heat of vaporization, it does not evaporate easily and must be evaporated by appropriate means. Also, as water cools, it becomes increasingly difficult to evaporate it, for example in endothermic reaction and desiccant evaporation systems. Accordingly, neither endothermic cooling nor the conventional desiccant cooling systems of the prior art have proven themselves to be the most efficient forms of cooling food products such as beverages. Combining dry gas mediation with other cooling methods can effectively increase the thermodynamic potential for cooling food products using two basic substances, water and dry gas.

The Present Invention The following definitions are generally used to explain some terms used in this disclosure to describe the present invention.

"Food container" means a metal or plastic food container and includes the food or beverage product used in the present invention.

"Food" shall mean any substance that is a consumable, preferably a liquid beverage.
"Inwards" shall mean pointing in the direction of the food.
"Outward" shall mean pointing away from the food.
"Dew point temperature" shall mean the temperature at which the vapor of the humidifying liquid in a sample of dry gas at constant atmospheric pressure condenses into the humidifying liquid at the same rate as it evaporates.

For the purposes of this application, "inner sleeve member" shall mean a thin-walled, cup-shaped container made of either plastic or metal.

For the purposes of this application, a "covering sleeve member" shall mean a cup-shaped container having thin walls and made of either plastic or metal.

For the purposes of this application, "protrusion" shall mean:
For the purposes of this application, "humidifying liquid" shall mean any liquid that is used to evaporate and cool itself.

"Dry gas" means a gas that has a dew point temperature that is substantially low relative to a particular humidifying liquid, and that has a dew point temperature that is substantially lower than 10° F. shall mean a gas having an extremely low vapor partial pressure. Thus, a drying gas may be dry relative to a humidifying liquid, but still be a humidifying gas in relation to another liquid.

For the purposes of this application, "humidifying liquid vapor" shall mean any humidifying liquid vapor.

For the purposes of this application, "inward facing" shall mean structures facing towards the side walls of the food container. The inward undulations thus form compartments with surfaces that they surround and tangentially contact.

For the purposes of this application, "outward facing" shall mean any structure oriented away from the food container sidewall.

For the purposes of this application, "protrusion" shall mean any curved and straight protrusion from a wall, including inward and outward wall undulations. Thus, an outwardly directed projection can form a compartment with a surface that surrounds and contacts the outwardly directed projection, and an inwardly directed projection can form a compartment that has a surface that surrounds and contacts the inwardly directed projection.

For the purposes of this application, "heat transport means" shall mean a thermodynamic and electrogenic potential for exchanging heat between substances.
For the purposes of this application, "compartment" shall mean the space enclosed by the protrusion and one of the food container side wall and the covering sleeve member side wall.

For the purposes of this application, "closed structure" shall mean any structure that forms a seal between two walls.

For the purposes of this application, "chamber" shall mean a space enclosed by one or more sealing structures.

For the purposes of this application, "cup-shaped" shall mean a cup-shaped structure having a closed end and an opposite open end separated by a cylindrical wall.

For the purposes of this application, "heat-shrinkable" shall mean a material that forms a surface that is capable of shrinking in its area upon heating.

For the purposes of this application, "sealing" shall mean a part of a wall that is capable of forming a seal with another wall.

"Wider" for the purposes of this application shall mean having larger dimensions.
For the purposes of this application, "pressure differential" shall mean the pressure difference between two fluids separated by a dry gas seal, including the pressure difference due to the difference in the height of gravity between said two fluids. . It is anticipated that any one of two such fluids may be contained within the chamber and have a higher pressure than the other.

For the purposes of this application, "ion" shall mean an atom or molecule with a non-zero net charge.
For the purposes of this application, a "compound" is defined as any compound that can cool endothermically by reacting with each other and by dissolving in a humidifying liquid such as water to form ions from its elements or combinations of elements. shall mean a compound.

For the purposes of this application, an "inner sleeve member" refers to a thin-walled cylinder which may preferably take the form of a thin-walled cup and optionally a cylinder made of a non-permeable barrier material such as plastic or aluminum. shall mean structure.
For the purposes of this application, "food" shall mean any substance that is a consumable, preferably a liquid beverage.
"Food container" shall mean any food container made of metal or plastic that can store food or beverages.
For purposes of this application, "dry gas" shall mean a gas with substantially low water vapor partial pressure approaching a dew point temperature of less than 10°F, with little or no humidifying liquid present therein. do. Note that the drying gas itself may liquefy.
For purposes of this application, "wet gas" shall mean a dry gas that has been humidified to have a higher water vapor pressure and a dew point temperature greater than 10 degrees Fahrenheit.

For the purposes of this application, "low vapor pressure medium" shall mean any condition that results in a very rare medium such as dry gas, vacuum, or a low partial vapor pressure medium.
For the purposes of this application, a "drying gas chamber" is a functional structure that preferably contains and delivers drying gas and that can hold other structures within it.

"PVC" shall mean heat-shrinkable polyvinyl chloride.

"PET" shall mean heat-shrinkable polyethylene tetraphthalate.

"Ionizable" shall refer to any compound that can dissolve in water to form ions from its element or combination of elements.

For the purposes of this application, "vapor absorbing material" shall mean any substance or combination of substances capable of absorbing humidification liquid vapor as defined herein.

For the purposes of this application, "plastic heat-shrinkable vapor absorbing material" refers to any substance or combination of substances capable of absorbing humidifying liquid vapor and generating heat of condensation of the humidifying liquid vapor to heat-shrink the heat-shrinkable plastic. shall mean.

For the purposes of this application, "sealing wax" shall mean any wax that is insoluble in the humidifying liquid.

For the purposes of this application, "thermal wax" shall mean any wax having a melting point temperature at least above ambient temperature.

"Reactive compound" shall mean a hydrated compound that reacts with another compound to provide endothermic cooling, thereby producing a humidifying liquid.

"Dissolved compound" shall mean a compound that dissolves in the humidifying liquid and, by its ionization, provides endothermic cooling of the humidifying liquid.

For the purposes of this application, "upright" shall mean vertically oriented.

For orientation and clarity, assume that the food container is standing upright and vertically with the bottom of the food container resting on a horizontal surface.

The present invention describes the thermodynamic potential for evaporation of a humidifying liquid such as water, a water-ethanol azeotrope, a dimethyl ether-water azeotrope, or a suitable liquid, such as a drying gas to force this evaporation from a further cold liquid. using a substantially lower vapor pressure medium capacity. To do this, standard food containers such as cans or bottles are provided. The food container is preferably a cylindrical beverage food container of standard design, equipped with standard food release means and a standard food release opening.

First Embodiment of the Invention In a first embodiment of the invention, a food container is provided with an adhesive lining of metal and plastic strips attached to the food container side wall to provide a seal-breaking structure. Prepare what was given. The seal breaking structure may also be inward facing as a depression made in the food container side wall, but preferably the seal breaking structure is a thick self-contained structure mounted to act as a disruption of the smoothness of the food container side wall. It may also be provided as an adhesive plastic strip. A seal breaking structure is provided on the side wall of the food container for breaking the seal made by the dry gas seal.

The covering sleeve member seal is provided in the form of a ring structure consisting of one of an O-ring seal, a rubber band seal, a putty seal, and a sealing wax seal, and an adhesive bonding agent, formed into a thin loop. In the case of rubber bands, this type is often used to hold multiple items together, such as bundles of paper. In the case of O-rings, they are a type of rubber seal that has traditionally been used to seal surfaces. The seal of the covering sleeve member preferably surrounds the food container side wall with a cross-sectional dimension of less than 4 mm. Preferably, the covering sleeve member seal is expandable to form a tight sealing band around the food container. When made from sealing wax, the covering sleeve member seal should be formed at the appropriate location on the food container sidewall, as defined herein. For example, in the case of a rubber band and an O-ring, the loop diameter of the covered sleeve member seal can be expanded, and the covered sleeve member seal is arranged circumferentially and parallel to the diametric plane of the food container. Firmly hold the seam of the top wall of the food container in a plane that is large and close to the top wall of the food container.

Dry gas seals are also provided, which also come in the form of ring structures such as O-ring seals, rubber band seals, putty seals, and sealing wax seals, adhesive bonding, and are formed into thin loops. The dry gas seal surrounds the food container side wall and should preferably have a cross-sectional dimension of less than 4 mm in width. If the dry gas seal is a rubber band, expand it to form a band around the side wall of the food container. If made from sealing wax, a dry gas seal should be formed on the food container sidewall at the appropriate location. When using a rubber band, place the dry gas seal circumferentially to hold the seal firmly around the food container sidewall in a plane that is angled to the food container's diameter plane. The minimum distal separation of the dry gas seal below the covering sleeve member seal is preferably about 20 mm.

Before the device is used, the seal breaking structure is positioned between the dry gas seal and the covering sleeve member seal.

An inner sleeve member is provided, and in a first embodiment, the inner sleeve member is preferably made from a thin material such as plastic and aluminum, and the inner sleeve member wall is made of cotton laminated thereon. , woven mesh, absorbent paper, and absorbent cardboard. Preferably, the inner sleeve member is made from a thin plastic material and is formed by compression molding, heat shrinking, and injection molding.

The inner sleeve member has an inner sleeve member sidewall with surface protrusions on the inner and outer surfaces, such as the protrusions shown in FIGS. 2, 12, 20, 21 and 22. These protrusions can be in the form of waves with inward and outward inward protrusions. The purpose of the inward and outward protrusions is to increase its strength, surface area and allow:
a) A variety of different compounds can be stored between the outwardly directed protrusions when forming a compartment against the food container side wall. If a compartment is formed for the covering sleeve member, more specific chemicals can be stored between the inward projections.
b) A humidifying liquid can be drawn between the projections to ionize and cool the compounds. Drying gas can also pass freely through the compartment to evaporate the humidifying liquid.
c) Reacting chemicals that react endothermically can be stored between separate compartments before mixing the reactions by deforming the compartments.

The uniform undulating protrusions of the inner sleeve member are shown in FIGS. Just an example. For example, the inner sleeve member side walls may be injection molded with ribs projecting from the walls to form compartments that serve the same purpose. Various protruding features, such as the protrusions described above, can be used to increase the surface area of the inner sleeve member. For example, the inwardly directed protrusions of the inner sleeve member may tangentially fit with the food container sidewall to form an outwardly directed compartment of outwardly directed protrusions around the food container sidewall to retain the compound and the food container sidewall. The humidifying liquid held in the outwardly facing compartment formed by the humidifier is allowed to enter therein and ionize the compounds that endothermically dissolve therein and provide initial cooling of the product. The humidifying liquid, preferably water, can then be evaporated by the drying gas present in the outwardly facing compartment and absorbed by the plastic heat shrink vapor absorbent material to provide a second means of cooling. If the compound is held between the outwardly directed protrusions against the side wall of the food container and the humidifying liquid is retained between the outwardly directed protrusions and penetrates between the outwardly directed protrusions and causes endothermic cooling by solvation, The opposite configuration is also possible.

The inner sleeve member can also be made as a cylindrical wall with protrusions that provide structural support, solution retention, and free passage of drying gas to evaporate humidifying liquid within the drying gas chamber. Preferably, the inner sleeve member is a heat-shrinkable plastic sleeve with absorbent material attached to its surface to absorb the humidifying liquid and retain sufficient humidifying liquid without spilling it due to osmotic pressure.

In a first embodiment of the invention, the inner sleeve member circumferentially surrounds the food container sidewall at least partially in the area below the dry gas seal and is bonded to the food container sidewall by adhesive, tape, and friction. held in place by using one of the Preferably, the inner sleeve member partially surrounds the exposed surface of the food container side wall below the dry gas seal and extends around the bottom edge of the food container in a cup-like configuration.

a heat-shrinkable thin-walled cup-shaped sleeve that encloses the food container in whole or in part, comprising a covering sleeve member made of either heat-shrinkable polyethylene terephthalate (PET) or polyvinyl chloride (PVC); do. Preferably, the covering sleeve member has a covering sleeve member sidewall which can take a variety of shapes, but which allows it to form a sealing fit with a portion of the food container sidewall, as described in the following paragraphs and pages. It shall have a cylindrical seal.

The covering sleeve member side wall is the outer covering of the device and generally covers the inner sleeve member and the closed food container containing the food product below the top wall of the food container and partially covers the inward facing wall of the drying gas chamber. It partially forms a humidifying liquid chamber wall. Preferably, the covering sleeve member sidewalls are made of a plastic material that can be partially reformed by heat shrinking when heat is applied, such as heat shrinkable PET and heat shrinkable PVC. The covering sleeve member sidewall preferably extends to partially cover the food container sidewall and partially cover the food container top wall. The covering sleeve member sidewall is a snug fit over and surrounding the inner sleeve member. The inner sleeve member has an outwardly directed protrusion that tangentially contacts the inwardly facing surface of the covered sleeve member side wall, so that the dry gas chamber can have multiple compartments formed by the inwardly directed protrusions with the covered sleeve member side wall. form part of.

If the covering sleeve member sidewall extends to cover most or all of the food container top wall, add an extension grip made from a simple plastic ring and snap into the seam of the food container top wall so that the user can attach the extension grip. Because it can be gripped and rotated, the food container can be rotated relative to the covering sleeve member. As shown in Figure 17, the covering sleeve member may be constructed with support structures such as channels and cavities that allow it to have more structural strength to prevent collapse when vacuum is applied. .

The covering sleeve member sidewall covers the attached inner sleeve member and completely or partially covers the food container. The covering sleeve member sidewall has a covering sleeve member seal that can be heat-shrinked to contract in diameter and seal the food container sidewall to form a seal. Although it is anticipated that the sidewall end of the covering sleeve member will be located at the covering sleeve member seal, it is contemplated that the covering sleeve member sidewall end may extend beyond the covering sleeve member seal. As the sheathing sleeve member seal heat shrinks, the sheathing sleeve member sidewall applies pressure to tighten around the surface of the sheathing sleeve member seal on the food container sidewall, which in turn applies additional pressure to tighten around the surface of the dry gas seal on the food container sidewall. to form a humidifying fluid chamber between the food container side wall and the covering sleeve member side wall.

As mentioned above, the covering sleeve member is rotatable relative to the food container sidewall. Advantageously, therefore, the dry gas seal and the covering sleeve member seal rotate together with the covering sleeve member relative to the food container side wall. It is anticipated that the covering sleeve member sidewall will deform by compressive heat shrinkage around the covering sleeve member seal to securely hold the covering sleeve member seal and provide it for sealed rotation with the covering sleeve member. However, it is also envisaged that the covering sleeve member could be spun in shape and then made from thin aluminum that would securely hold the covering sleeve member seal and provide it for sealed rotation with the covering sleeve member. The covering sleeve member sidewall is expected to be partially deformed by compression around the dry gas seal to provide a seal that securely holds the dry gas seal and rotates with the covering sleeve member against the food container side wall. Ru. However, it is also envisioned that the covering sleeve member may be made from thin aluminum that may be in spun form to firmly hold the covering sleeve member seal and provide it for sealed rotation with the covering sleeve member. The covering sleeve member seal is symmetrically arranged with respect to the rotational force of the covering seal and may not rotate with the covering sleeve member, but is still expected to form a seal between the covering seal and the food container sidewall. However, it is expected that the dry gas seal is not symmetrical with respect to the rotation of the covering sleeve member and therefore the dry gas seal must rotate in unison with the covering sleeve member relative to the food container side wall.

The side walls of the sheathing sleeve member are either heat-shrinked (if made from one of heat-shrinkable PET or heat-shrinkable PVC) or crimped and spin-formed using rollers (if made from aluminium). ), the covering sleeve member seal can be compressed and sealed as described above. The sidewalls of the coated sleeve member are reinforced by protrusions, such as ribs, undulations, circumferential grooves, etc., providing strength, surface area, and various different ionizable compounds between any of the inward protrusions. It also makes it possible to store and facilitate the passage of dry gases and steam. The covered sleeve member sidewall has a covered sleeve member seal that is used to form a sealing surface with a covered sleeve member seal. The covering sleeve member seal compresses the dry gas seal and presses it against the food container sidewall to form a fluid seal. When the covering sleeve member seal contracts to tighten and seal the surface of the dry gas seal, a rotatable seal is formed between the food container sidewall and the covering sleeve member. It is anticipated that the sheathing sleeve member seal will partially deform around the sheathing sleeve member seal to provide a secure hold on the sheathing sleeve member seal and causing it to rotate therewith. It is anticipated that the covering sleeve member sidewalls will also partially deform around the dry gas seal to securely hold the dry gas seal and provide for sealing rotation with the covering sleeve member during rotation. This provides actuation means when the covering sleeve member rotates.

The inwardly facing surface of the partially covered sleeve member sidewall, the dry gas seal, the covered sleeve member seal, and the partially outwardly facing surface of the food container sidewall together form a humidifying fluid chamber. The humidifying liquid is stored in a sealed manner between the humidifying liquid chambers. It is anticipated that the humidifying liquid may also be a pressurized liquefied gas.

The sheathing sleeve member sidewall has a sheathing sleeve member restriction that tightens the wick of the inner sleeve member to create a restricted vapor passage for passage of humidifying liquid vapor and drying gas in a controlled manner. When the inner sleeve member restriction is tightened around the surface of the wick, it forms a rotatable restricted vapor passage. Rotation without deforming or rotating the restrictive steam passageway and the inner sleeve member itself is expected to cause the covering sleeve member sidewall to slide and rotate over the restrictive steam passageway. The covering sleeve member is made with a covering sleeve member bottom wall sealingly connected to the covering sleeve member side walls. The covering sleeve member bottom wall rotates into sealing connection with the inwardly projecting covering sleeve member annular wall, preferably forming a frustoconical shape. The covering sleeve member annular wall may also have other forms such as a partially hemispherical dome shape, a cylindrical shape, and an inverted frustoconical shape, i.e. having a closed end diameter larger at its upper wall than at its open end. good. The drying gas chamber is a chamber formed inside the covering sleeve member below the drying gas seal.

According to a first embodiment of the invention, therefore, the drying gas chamber is below the humidifying liquid chamber and accommodates the food container and the attached inner sleeve member. It is anticipated that the covering sleeve member will be made from spun or deep drawn aluminum and formed to provide all the required sealing by rotomolding and rolling the part. In such cases, the covering sleeve member annular wall is made from one of heat-shrinkable injection stretch blown PET and polyolefin materials and PVC materials and then joined to the covering sleeve member bottom wall by ultrasonic welding or gluing. Good too.

A thin-walled open-ended support cylinder with a support cylinder hole near the top end rests at the opposite open end on the covering sleeve member bottom wall between the covering sleeve member side wall and the covering sleeve member annular wall to close the food container bottom edge. is placed so that it is in contact with the

An annular plastic heat shrink vapor absorbing material retention space is defined within the dry gas chamber between the inner surface of the support cylinder, the inner sheathing sleeve member annular wall, and the inner sheathing sleeve member bottom wall. An annular hot wax retention space is also defined within the dry gas chamber between the outer surface of the support cylinder, the inner surface of the covering sleeve member annular wall, and the inner surface of the covering sleeve member bottom wall. The annular hot wax holding space may be filled with a suitable hot wax that melts at a temperature in the range of 70°F to 160°F. The support cylinder prevents the bottom wall of the covering sleeve member from deforming out of shape relative to the food container, and also protects the hands of the user gripping the device from excessive heat. Thermal wax 138 may be removed and replaced with dry gas.

Several cooling actuation means and cooling actuation means stages are provided. The first is triggered when the covering sleeve is rotated relative to the food container sidewall, which places the drying gas seal and the drying gas seal over the provided seal-breaking structure, separating the humidifying fluid chamber and the drying gas seal. Allows fluid communication of exposed humidifying fluid to and from the gas chamber. A second cooling actuation means and a second cooling actuation means stage are also provided. A deformable ring structure seal preferably consisting of one of O-ring seals, metal seals, rubber band seals, putty seals, and sealing wax seals, adhesive bonding agents and shaped into a thin loop is a dry gas seal. , which is preferably of a deformable material. When the covering sleeve member is pressed onto the drying gas seal and deformed, the humidifying liquid leaks from the humidifying liquid chamber and enters the drying gas chamber, where it can ionize compounds and simultaneously evaporate into drying gas. Good results are also obtained when the dry gas seal is made of a deformable structure such as a thin metal band laminated with either a sealing wax material or a sealing putty material.

The inner sleeve member is preferably made of protrusions forming a compartment with a food container sidewall and a covering sleeve member sidewall to provide strength, surface area, and storage of various discrete compounds between any of those protrusions. make it possible to

The annular plastic heat-shrinkable vapor absorbent holding space holds a plastic heat-shrinkable vapor absorbent material such as silica gel and the shape of the absorbent material listed in Table 1. The annular plastic heat-shrinkable vapor absorbing space is a stretch-molded heat-shrinkable portion of the covering sleeve member. If the sheathing sleeve member is made from aluminum, the sheathing sleeve member annular wall is made from one of heat-shrinkable PET and heat-shrinkable PVC and is attached to the sheathing sleeve member bottom wall with a suitable adhesive. must be created as a separate item. The covering sleeve member annular wall responds to the increase in temperature by deforming and contracting and flattening to increase the volume of the drying gas chamber. This deformation is caused by the plastic heat shrink vapor absorbent being heated as it absorbs humidifying liquid vapor from the drying gas.

The covering sleeve member annular wall preferably forms a shape that penetrates the volume of the drying gas chamber. The protruding shape of the covering sleeve member annular wall is important to enhance the functionality of the device. The shape of the covering sleeve member annular wall may be an inverted cup, a dome, and any suitable shape that minimizes the volume of an equivalent cylindrical volume formed solely by the covering sleeve member side walls, preferably having a flat bottom. be able to. The shape of the covering sleeve member annular wall must first minimize the volume of the drying gas chamber and then maximize its penetration into the drying gas chamber when heated. In the illustrated example, the shape of the covering sleeve member annular wall forms an inverted cup shape and a dome. Advantageously, the annular plastic heat shrink vapor absorbent retaining space is in fluid communication with the drying gas. When the device cooling actuation means is actuated, the plastic heat shrink vapor absorbing material heats the annular wall of the covering sleeve member. When heated, the annular wall of the covering sleeve member contracts to minimize its area. The annular plastic heat shrink vapor absorbent retaining space contracts and moves outwardly from the domed bottom wall of the food container, increasing the volume of the drying gas chamber and creating a substantial negative pressure for the drying gas. This reduces the vapor partial pressure of the drying gas and the partial pressure of the humidifying liquid vapor within the drying gas chamber and thus within the inner sleeve member.

It is anticipated that the inner sleeve member may also be made from one of pressure formed and deep drawn aluminum. It is anticipated that the inner sleeve member sidewalls can be overlapped with a core material that is made to retain only the humidifying liquid without spilling it when it is received. The inward and outward projections may be formed by first forming the inner sleeve member sidewall into a cylinder, then placing the cylindrical wall on a mold and heat shrinking to form the inward and outward projections. Preferably, the inwardly directed projections tangentially contact the food container sidewall and the outwardly directed projections form multiple compartments with the food container sidewall to retain the compound or humidifying liquid against the food container sidewall. The outwardly directed projections also tangentially contact the covering sleeve member sidewalls and the inwardly directed projections form multiple compartments with the covering sleeve member sidewalls to permit fluid communication with the drying gas.

In all embodiments, it is anticipated that the walls of the inner sleeve member may also be impregnated or layered with an ionizable compound that has a reversible endothermic entropy increasing reaction with the humidifying fluid. The inner sleeve member can be heat-shrinked to form its shape on a mold by hot spraying a stream of microparticles of an ionizable compound at high impact pressure. can. In all cases, the inner sleeve member must have a vapor passageway defined by its outer wall and the covering sleeve member side walls to allow vapor to pass only through the plastic heat shrink vapor absorbing material. This is easily accomplished with film material forming the inner sleeve member by tying the steam wicking material over the inner sleeve member restriction.

Another method for inserting ionizable soluble salts into the inner sleeve member is to use a soluble material such as polyvinyl acetate (PVA) laminated to the outer wall of the inner sleeve member and attach the ionizable compound to the PVA layer. be. Other lamination materials such as water-soluble adhesives can be used for this purpose. Drying gas is preferably provided within the drying gas chamber at a pressure slightly below ambient atmospheric pressure.

A very dry gas is provided, such as dry air, dry _CO2 . Drying gas can be stored at room temperature and under moderate pressure. Drying gas can be easily produced using a pressure precipitation system, or using a refrigeration system, or using a desiccant stack that removes humidifying liquid vapor from the humidified gas. When the drying gas is stored in the drying gas chamber, it functions as if the drying gas chamber were evacuated for the purpose of humidifying liquid introduced into the drying gas chamber. This is because the dry gas has a low vapor pressure of the humidifying liquid, which can be said to be the vapor partial pressure of the vacuum partial humidifying liquid. In a closed food container, the drying gas, when exposed to humidifying liquid vapor, absorbs humidifying liquid vapor from the environment and is cooled in the same way that water evaporates when exposed to a vacuum. However, since the drying gas carries the humidifying liquid vapor as electrostatically bound vapor within its molecular structure, the humidifying liquid vapor does not easily condense on surfaces above the dew point temperature. This provides a means of heat transport that can be understood by comparing what happens to the evacuated gas and its temperature and pressure relationships. The drying gas can only exert a low partial humidification liquid vapor pressure and has moisture component molecules that function as if the vapor were in a vacuum. This interstitial molecular sieve of the drying gas potential is a measure of its relative dew point temperature to the humidifying liquid vapor, which is like an exhausted gas at a negative temperature compared to the humidified gas at room temperature. The partial pressure of the humidifying liquid vapor in the drying gas is very low, so the moisture behaves as if it were floating in a vacuum when exposed to the drying gas. Therefore, the actions performed by the drying gas in the practice of the invention, except for the fact that the vacuum environment evaporates the humidifying liquid and the humidifying liquid vapor may condense on surfaces colder than the temperature of the vapor, It is equivalent to the action performed in a vacuum environment of humidifying liquid vapor. Dry gas is an electrogenic transport vehicle. This is justified by the fact that the drying gas acts as phonons with well-defined discrete units or quanta of vibrational mechanical energy. Phonons and electrons are the two main types of particle excitations that contribute to the thermal energy that contributes to heat capacity. The removal of polar humidifying liquid vapor molecules, such as water molecules in vapor form, into the drying gas is due to the electrogenic heat transport potential. Dry gas hyperventilation is known to alter airway reactivity and ion content on the tracheal side of rabbits (Respir physiol. 1997 Jul; 109(1):65-72). In a paper titled "the nature of gas ions," negative ions in drying gases are generally clusters of molecules that undergo a transition step over a certain range of electrical forces and pressures and eventually become negative carriers. becomes virtually all electrons [nature 95, 230-231 (April 29, 1915) doi:10.1038/095230b0]. The book ``Conduction of electricity through gases'' (Cambridge University Press) states that when the gas is dry than when the gas is wet, the diffusion rate of negative ions exceeds the rate of diffusion of cations. has been shown to be much larger. Drying gas is therefore an electrogenic heat transporter. Therefore, an essential component of the drying gas is achievable in the cooling device when leading to the evaporation of the humidifying liquid, especially when the relative dew point of the drying gas to the humidifying liquid vapor is in the range below the formation of solids from the humidifying liquid. It is better than a vacuum when the partial vapor pressure of the humidifying liquid at any given surface temperature is low. For water vapor, it is below 32°F. Polymer electrogenic membranes (PEMs), such as Nafion®, have a hydrophobic Teflon-like backbone with sulfonic acid end groups attached to the electrogenic transport water that passes through the membrane. used. Polyvinyl acetate (PVA) containing membranes are also used for the purpose of filtering ions from solutions. The vapor pressure of the humidifying liquid vapor changes stepwise within the chemical, such as the thirsty molecules of Nafion® drawing the humidifying liquid vapor deeper and deeper through its structure by electrogenic heat transport. Generate flow. The drying gas exhibits similar behavior by creating a spherical gradient of drying gas to transport the humidifying liquid vapor and equilibrating the vapor pressure of the humidifying liquid vapor.

With the possibility of removing humidifying liquids such as water from the drying gas, dew points can be from 10°F to -150°F. Therefore, humidifying liquids above these temperatures tend to be absorbed by drying gases below the dew point temperature. This possibility of the drying gas and a specially designed wicking layer absorbing the humidifying liquid from the cold surface has been exploited in several cooling processes to combine the desiccant with either a vacuum or stoichiometric endothermic reaction. It can produce a continuous process that results in much more efficient cooling than can be achieved with other methods. For example, to cool a 16 ounce beverage by 30 degrees Fahrenheit requires dissolving at least 127 grams of potassium chloride in approximately 380 grams of water using conventional prior art techniques. This is not commercially viable with self-cooling food container technology relying solely on this process. The present invention uses much less ionizable compound (67 g) in one mode, which is 100 g of humidifying fluid, and can regenerate the ionizable compound for reuse. For example, ion exchange compounds and other types of electrochemical and electrogenic membranes, such as PEMs, preferentially cool by absorbing water vapor and permeating protons through their structure, converting the liquid to permeated vapor. . The inner sleeve member may be fabricated from similar materials, such as ion exchange film materials, and function similarly to channel water formed by reaction of chemicals within the humidification fluid chamber for further cooling. The drying gas in the drying gas chamber can interact multiple times with the humidifying liquid vapor in the drying gas chamber to humidify and further cool.

If the mass of the beverage is m _b , then the heat capacity c _p is the heat removed to cause a temperature change of Δt and is given by:

ここで、θ＝（２５＋１９ｖ）であり、ｖはガス流の速度である。 An area exposed to drying gas at the same temperature as the water and at a starting humidity ratio x _s =0.005 (kg of H ₂ O per kg of drying gas) to produce water with a relative humidity ratio of x = 0.02. The amount of water (kg/s) evaporated from is given by the empirical formula (the 2003 Ashrae handbook - HVAC Applications), (Ashrae 2003), (Shah 1990, 1992, 2002).

Here, θ=(25+19v), and v is the velocity of the gas flow.

ここで、Ｅ_ｈは＜水を加熱するために使用されるエネルギーであり、Ｅ_ｖは、１００℃で水を蒸発させるために必要なエネルギーである。

As an example using dry air, the practical calculations are for an air flow rate of 1 m/s for a 45 second flow with a starting relative humidity of 0.005 and an exposed area of approximately 225 ^cm (6" x 6" cooling matrix). , the approximate water removal rate is 0.158 g/sec. The total heat required to raise 7.8 g of water from room temperature of 22° C. to steam is provided by the drying gas.

where E _h is the energy used to heat the water and E _v is the energy required to evaporate water at 100 °C.

This corresponds to 17,615 Joules of energy per cooling matrix removed with drying gas alone. It takes only 54,790 joules of energy to cool 16 fluid ounces of beverage from room temperature to 20 degrees Celsius. Therefore, if no endotherms occur, only two second wicking layers may be required in the cooling matrix, although more can be added. It is clear that a lot of thermodynamic potential is stored in the drying gas for the removal of heat h. Dry air, _CO2 , and nitrogen have very similar thermodynamic behavior in the humidification process. Therefore, dry air is not the only gas that can be used for this purpose. A suitable very dry gas such as dry _CO2 is sufficient as long as the dew point can be suitably lowered to be thermodynamically acceptable.

W. Nature (205, 278 (January 16, 1965); DOI: 10.1038/205278A0). W. ``Effect of carbon dioxide on evaporation of water'' published by John Mansfield and ``I'' published by Frank Sechrist in Nature (199, 899-900; August 31, 1963). nfluence of gases on the The study, titled ``rate of evaporation of water,'' found that water containing dissolved carbon dioxide, or surrounded by an atmosphere of this gas, evaporated 15 to 50 percent faster than water in the presence of air alone. It is shown that. Advantageously, therefore, the use of a drying gas, such as _CO2 , which is already found in carbonated beverages, can reliably increase the cooling capacity of the drying gas relative to water.

The present invention, unlike all the cited prior art, discloses a novel technology for cooling bottles and cans (metal and plastic beverage and food product containers) with label-like structures and It has the additional aspect of cooling in stages by multiple means using heat transport means. Currently, manufacturing costs are limited only by the cost of the covering sleeve member, the cost of the inner sleeve member, the cost of chemical components, and the cost of the process used to manufacture the device.

The drying gas can also transport water vapor from the cold solutions in the electrolyte intrusion process to dehydrate these ionic solutions and reactivate the solutes to further use their thermodynamic potential. The drying gas not only cools, but also allows the stoichiometric imbalance to recycle the solute and perform further cooling. The invention can be practiced without chemicals, with only a drying gas and a drying gas chamber. For example, a humidifying liquid may be produced by a chemical reaction of water that provides hydrated chemicals within a dry gas chamber. This produced humidifying liquid can be evaporated and absorbed into the drying gas for further cooling. The plastic heat shrink vapor absorber also keeps the drying gas dry in the drying gas chamber. The vapor of the humidifying liquid absorbed by the drying gas is absorbed into the plastic heat-shrinkable vapor absorbing material, reducing the vapor pressure in the humidifying liquid chamber and further releasing the humidifying liquid held between the inner sleeve member and the food container side wall. Evaporates and cools the food.

By removing the absorbed humidifying liquid vapor from the moist drying gas with a plastic heat-shrinkable vapor absorber, the drying gas can be regenerated without the need for large amounts of drying gas in the drying gas chamber and without the need for a vacuum. Can be used again. Thus, the present invention has several methodological and functional advantages over evaporative, endothermic, and drying vacuum systems disclosed in the prior art.

Second Embodiment of the Invention A second embodiment of the invention is shown in FIGS. 11, 12 and 20. A second embodiment of the invention uses the same elements used in the first embodiment to reconfigure another method of use and operation of the device. This time, the dry gas seal is moved further down and positioned to seal between the inwardly facing surface of the covering sleeve member sidewall and the outwardly facing surface of the inner sleeve member sidewall bottom edge. The inner sleeve member, dry gas seal, covering sleeve member seal, and food container thus partially form a humidifying fluid chamber. The humidifying fluid is held in highly hydrated reactive compounds. Thus, the humidifying liquid is released in place by the reaction of the reactive compounds having an endothermic reaction to produce water as the humidifying liquid. A drying gas chamber is formed below a drying gas seal that is separate from the humidifying liquid chamber. In this embodiment of the invention, the reactive compound is stored between opposite sides of the inner sleeve member in a compartment formed by the outwardly directed food container sidewall of the inner sleeve member. The reactive compound can also be stored outside the inner sleeve member sidewall in a compartment formed by the inner sleeve member sidewall with an inwardly directed projection.

Third Embodiment of the Invention A third embodiment of the invention is shown in FIG. The third embodiment of the invention uses the same elements used in the first embodiment to reconfigure another method of use and operation of the device 10. In a third embodiment of the invention, the dry gas seal is simply moved to seal between the inwardly facing surface of the upper edge of the inner sleeve member sidewall and the outwardly facing surface of the food container sidewall. A humidifying liquid is used to fill the compartment formed between the food container sidewall and the outwardly directed projection of the inner sleeve member. the

Fourth Embodiment of the Present Invention A fourth embodiment of the present invention is shown in FIG. A fourth embodiment of the invention uses the same elements used in the first embodiment to reconfigure another method of use and operation of the device. In a fourth embodiment of the invention, the dry gas seal is again moved approximately half way up the inwardly facing surface of the inner sleeve member side wall to form a similar connection with the inwardly facing surface of the upper end of the inner sleeve member side wall. and the outward facing surface of the side wall of the food container. A humidifying liquid fills a compartment formed below the dry gas seal between the inwardly facing surface of the outwardly facing projection of the inner sleeve member and the outwardly facing surface of the food container side wall. This allows the compartment formed between the inwardly facing surface of the outwardly facing projection of the inner sleeve member and the outwardly facing surface of the food container side wall to be filled with dissolved compound above the dry gas seal.

The object of the present invention is to use the drying gas as an ionic modifier to reform the solutes from their ions in solution to their original nonionic state and be reused over and over again for the same purpose. An object of the present invention is to provide a method of cooling a food container using a novel heat transport means to remove heat from the food.

Another object of the invention is to provide a method for assembling a self-cooling food container in finished form with a food product, such as a beverage, therein, provided with a dry gas heat transport means for cooling the food container. be.

Yet another object of the present invention is to provide a self-cooling device for cooling food containers that uses conventional filled and closed food containers in finished form to endothermically ionize compounds with water to further cool the food. It is.

A further object of the invention is to use substantially dry gas humidification to evaporate water from a solution of ionized compounds and regenerate the ionized compounds in non-ionized form to further ionize them into food products. Furthermore, it is an object to provide an endothermic cooling device.

A further object of the invention is to use humidification of a substantially dry gas to evaporate water from a solution formed by reacting reactants endothermically to cool and produce a humidification liquid, such as water. , to provide an apparatus for further cooling by evaporation using dry gas and vapor absorbing material.

Finally, it is an object of the present invention to provide a thermodynamically simple, feasible and cost-effective device for removing heat from food products and thereby cooling them.

The present invention achieves the above objects and others, as may be determined by a fair reading and interpretation of the specification as a whole.

Therefore, the present invention can achieve much more cooling, including:
a) Remove and evaporate water vapor from a cold solution to enhance cooling.
b) dehydrating the ionized compound with the negative entropy of the solution back to its original ionizable compound state and reusing it for further cooling (storage of the ionizable compound);
c) Not only removes the heat of vaporization from the cold solution, but also removes any reversible reforming energy of the compound from the ionic solution, preventing reheating due to reversal of the heat of formation of the ions from the solution.
d) Use drying gas to evaporate water vapor from the reaction product water to remove more heat and clean the vapor for further cooling.
e) Automatically vaporizes the drying gas by deforming the annular plastic heat-shrinkable vapor absorbing material holding space, increasing the volume of the drying gas chamber, realizing dilution of the drying gas, and lowering its vapor partial pressure to humidify. Allow the liquid to evaporate further.

Heat Transport Means The first heat transport means disclosed in the present invention comprises a substantially dry gas as a medium for regenerating the ionic state from a solution of a humidifying liquid and a solute that forms ions for reuse. use. This achieves the following:
a) cooling by ionizable compounds dissolved in the humidifying liquid entering the drying gas chamber; b) further cooling by the drying gas which reconstitutes and re-forms the ionizable compounds by reversible salting out of the humidifying liquid for reuse. Achieve much of the same thing by depleting the solvent of the solution and drying solute and putting more humidifying liquid into the drying gas chamber to reuse the regenerated solute for demineralization and further ionization. c) Further cooling by evaporating the humidifying liquid of (a) or (b) with dry gas.

The humidifying liquid is preferably water and may be a liquid that has an ionization potential for ionizable compounds or solutes.

Deposition of solutes by a dry gas medium, such as dry gas, removes the heat produced by demineralization because the humidified dry gas medium increases the dew point temperature without heating. Therefore, there is no need to store a stoichiometric ratio of a solvent, such as a humidifying liquid, and an ionizable compound, such as an ionizable compound, in order to cool a beverage. The humidifying fluid can contain more than ionizable compounds, and the ionizable compounds ionize multiple times through multiple mineralization and demineralization cycles. If the rate of solvation and demineralization of such solutions is controlled, the drying gas will further solvate the solute by removing the humidifying liquid from such reactions at a controlled rate. essentially transporting this water vapor for reuse without reheating the cooling surface. The ions release the same energy that is absorbed from the humidifier ions being destroyed. Efficiency lies in the direct transfer of bound energy from the broken humidifying liquid molecules to the reforming energy of the humidifying liquid vapor as vapor that is immediately carried away or absorbed and removed by the dry gas humidification. An example using water is shown below.

If the product is a liquid containing water, the amount of the product itself will function as a humidifying liquid, such as water, as long as it does not adversely interact with the solute. If the product is semi-solid or solid, a separate liquid is preferably provided, which is simply a suitable humidifying liquid.

A food container is provided that includes a food container having a spout and a spout opening means. The food container is preferably one of a metal can and a plastic bottle. Preferably, the drying gas is provided as one of air, nitrogen and carbon dioxide. Preferably, the drying gas has a dew point temperature below 10° F. with respect to the humidifying liquid vapor.

Various other objects, advantages, and features of the invention will become apparent to those skilled in the art from the following discussion taken in conjunction with the following drawings that depict preferred embodiments of the invention.

Figure 3 shows a food container with a metal can attached to a covering sleeve member, showing details of the covering of the covering sleeve member and details of the top wall of the food container. The curved arrow indicates that when the surface of the seal of the food container is broken by the seal-breaking structure, the food container rotates relative to the covering sleeve member and vice versa, which can activate cooling. . FIG. 7 is an example of one form of an inner sleeve member with an inwardly directed protrusion and an outwardly directed protrusion. This increases the surface area. The inner sleeve member sidewall is shown impregnated with ionizable compound S. Inward and outward projections provide a simple means of storing chemicals, increasing surface area and strength, and also allowing free passage of drying gas within the device. 1 is a cross-sectional view of the device according to the first embodiment before use; FIG. The food container is shown as a metal can attached to the side wall of the covering sleeve member, showing details of the covering sleeve member closure and some details of the food container top wall, as well as the drying gas chamber. The humidifying liquid chamber is above the drying gas chamber between the two seals. An annular plastic heat shrink vapor absorbent retention space and an annular hot wax retention space are shown. The covering sleeve member annular wall is shown forming an inverted cup by way of example. Figure 3 shows a cross-section of the device after the cooling actuation means have been used; Note that the cross section depends on where it is taken, since the protrusions can be of the smallest or largest diameter, in this case they are taken with the smallest diameter. The wick is saturated with a humidifying liquid that endothermically dissolves the compound and provides a first means of cooling. The covering sleeve member annular wall is contracted to a generally flat plane, and the annular plastic heat shrink vapor absorbent retaining space is increased in volume by drawing negative pressure into the drying gas chamber. The arrows indicate the flow of drying gas and steam to and from the inward projections of the inner sleeve member to provide a second means of cooling. The left side of the food device shows a cross section of the inner sleeve member forming an inward projection with drying gas therein, and the right side of the device shows a cross section of the inner sleeve member forming an outward projection with the compound in the drying gas chamber. It shows. FIG. 2 is a cross-sectional view of the device with a domed annular plastic heat-shrinkable vapor absorbing material holding space before use. Figure 3 is a partially cutaway view of the side wall of the covering sleeve member showing details of the humidifying liquid chamber, drying gas chamber, and seals; The seal failure configuration is shown before the cooling actuation means are used. Figure 3 is a partially cutaway view of the side wall of the covering sleeve member showing details of the humidifying liquid chamber, drying gas chamber, and seals; A seal breaking structure across the drying gas seal to initiate the cooling actuation means by leaking humidifying liquid into the drying gas chamber. Figure 3 shows a cross-section of the device according to the first embodiment just after the cooling actuation means have been used and the plastic heat-shrinkable vapor absorber is still cooling; The covering sleeve member annular wall is shown as a truncated inverted conical cup to increase the volume of entry of the annular plastic heat-shrink vapor absorber holding space into the drying gas chamber. 1 shows a cross-section of a first embodiment of the device of the invention when the food container is a bottle; FIG. The food container is shown as a bottle. The deformable ring structure forming the dry gas seal is pressed with a finger to show humidifying liquid leaking into the dry gas chamber and saturating the inner sleeve member. A second embodiment of the present invention is shown. In FIG. 11, the humidifying liquid chamber is filled with hydrating compounds that produce humidifying liquid by endothermic reaction with each other. A plastic heat shrink vapor absorbing material is between the inner sleeve member bottom wall and the covering sleeve member bottom wall. Once the dry gas seal is broken with finger pressure, the sidewall of the covering sleeve member is manually massaged to mix the reacting compounds into an endothermic reaction, producing an initial endothermic cooling while simultaneously creating a humidifying liquid. The humidifying liquid vapor is absorbed by the drying gas and, as before, transported to the plastic heat-shrinkable vapor absorber D for a second cooling. The inner sleeve member is shown surrounding the food container side wall and about to be inserted into the covering sleeve member. Fig. 3 shows a cross-section of an inner sleeve member with inwardly directed and outwardly directed protrusions for conveying dissolved and reactive compounds within a portion surrounding a food container sidewall; A third embodiment of the present invention is shown. In this embodiment, a humidifying liquid surrounds the food container sidewall and a drying gas chamber surrounds the subassembly. A third embodiment of the present invention is shown. In this embodiment, the humidifying liquid is shown to enter the dry gas chamber and fall into the wick once the dry gas seal is broken. A fourth embodiment of the invention is shown, in which a drying gas chamber surrounds a humidifying liquid chamber. The humidifying liquid chamber is sealed at the center of the side wall of the inner sleeve member by a dry gas seal. The finger presses and deforms the drying gas seal, illustrating that the humidifying liquid enters the drying gas chamber in a manner similar to that shown in FIG. The flow of humidifying liquid from the humidifying liquid chamber is due to the pressure difference between the drying gas chamber and the humidifying liquid chamber. When the plastic heat-shrinkable vapor-absorbing material is heated and the annular plastic heat-shrinkable vapor-absorbing material holding space is deformed, a negative pressure is generated in the drying gas chamber. As a result, the humidifying liquid is drawn into the drying gas chamber from the humidifying liquid chamber, the drying gas chamber is saturated, and both endothermic cooling and evaporative cooling are performed. 1 shows a partial cutaway of a device 10 having projections on the inner sleeve member and support structure on the covering sleeve member. 2 shows a manufacturing method of the present invention when a heat-shrinkable plastic is used to form a covering sleeve member. 2 shows the manufacturing method of the present invention when aluminum is used to form the covering sleeve member. The cross-section of the food container wall surrounded by the inner sleeve member and the covering sleeve member is shown again. Inward and outward projections have been shown to carry independent sets of dissolved compounds within them surrounding the food container sidewall. FIG. 6 shows an enlarged cross-sectional view of the device illustrating the deformation of the projections when the sidewall of the coated sleeve is manually massaged to mix the separated reaction compounds at the inward projections. Dissolved compounds are also shown within the compartment formed by the outwardly directed protrusion with the covering sleeve member when being stirred to form a solution. Another form of protrusion is shown as an example of a rib on the wall of the inner sleeve member.

As appropriate, detailed embodiments of the invention are disclosed herein. However, it is to be understood that the disclosed embodiments are merely illustrative of the invention, which may be embodied in various forms. Accordingly, the specific structural and functional details disclosed herein are not to be construed as limitations, but merely as a basis for the claims, and for limiting the invention in virtually any suitable construction. should be construed as a representative basis for teaching those skilled in the art to use the Referring now to the drawings, like features and features of the invention that are illustrated in various figures are designated by the same reference numerals. For orientation and clarity, food container 20 is assumed to be standing vertically, with food container 20 standing in its normal orientation. The present invention uses the thermodynamic potential of evaporation of a humidifying liquid h1, such as water or a suitable liquid, and the ability of a substantially low vapor pressure medium, such as a drying gas DG, to force this evaporation from even cold liquids. do.

First Embodiment of the Invention Referring to FIGS. 1-10, a standard food container 20 is provided. The food container 20 is preferably a cylindrical beverage food container of standard design and is provided with a standard food release means 113 and a standard food release opening 112. The food container 20 includes a seal-breaking structure 122 on the surface of the food container sidewall 100, which may be an indentation that does not tear the food container sidewall 100. The seal-breaking structure 122 can also be a simple self-adhesive protrusion that can destroy the smoothness of the food container sidewall 100 and thus its sealing ability. The location of the seal breaking structure 122 shall be provided in accordance with the following.

Covering sleeve member seal 121 is provided in the form of a thin loop structure consisting of one of an O-ring seal, a metal band seal, a rubber band seal, a putty seal, and a sealing wax seal, and an adhesive bond. Preferably, the covering sleeve member seal 121 is provided in the form of a looped rubber band, usually ring-shaped, commonly used for holding multiple objects together, such as for holding stacks of paper. . The diameter of the covering sleeve member seal 121 is preferably about 75% of the circumference surrounding the food container 20. The cross-sectional dimension of the covering sleeve member seal 121 is preferably less than 4 mm. Covering sleeve member seal 121 should form a tight sealing band around food container 20. Covering sleeve member seal 121 is circumferentially and sealingly disposed around food container side wall 100 in a plane parallel to the diametric plane of food container 20 and proximate food container top wall 107 .

Dry gas seals 123 are preferably provided in the form of O-ring seals, rubber band seals, putty seals, and sealing wax seals, as well as adhesive bonding agents, and are shaped into thin loops, usually ring structures. Preferably, the dry gas seal 123 is made from a seal type with a rectangular cross section, such as is typically found in rubber bands commonly used to hold objects together. The cross-sectional dimension of the dry gas seal 123 is preferably less than 4 mm. The dry gas seal 123 is preferably expandable to form a tight seal around the food container 20. The dry gas seal 123 is arranged in a plane that is inclined circumferentially at a small angle to the diametric plane of the food container 20. Rectangular cross-section seals are preferred, but not required, as round cross-section seals tend to be symmetrical in the diametrical plane of the food container 20. The dry gas seal 123 is inclined at an angle to the diametric plane of the food container 20 with a maximum distal separation of about 20 mm below the covering sleeve member seal 121. The maximum separation between the coated sleeve member seal 121 and the dry gas seal 123 is determined by the volume of space that can be formed between the two seals when the device is completed, as will be determined later. Seal breaking structure 122 must be disposed between and substantially in contact with dry gas seal 123 and covering sleeve member seal 121 before device 10 is used.

The inner sleeve member 102 includes an inner sleeve member side wall 105 and an inner sleeve member bottom wall 106, and in the first embodiment, the inner sleeve member 102 is preferably made of heat shrinkable stretch molded polyvinyl chloride (PVC) and a heat shrinkable stretch molded polyvinyl chloride (PVC). Made from a thin, impermeable version of shrinkable, stretch-molded polyethylene terephthalate (PET). Other materials may be used depending on how the inner sleeve member 102 is formed. The outward facing surface of the inner sleeve member sidewall 105 may be lined with a flexible wick 140 made from a wicking material such as one of cotton, porous plastic, woven mesh, absorbent paper, and wool. preferable. The inner sleeve member sidewall 105 may be laminated with a thin porous wick 140 made from absorbent paper to make its outwardly facing surface absorbent. The wick 140 must be thin to reduce its impact as a thermal mass on the functionality of the device 10. The inner sleeve member 102 is first formed with a cylindrical inner sleeve member sidewall 105, then lined with a wick 140, and then formed into various shapes by one of compression molding and heat shrinking to form its surface. Forms a protruding protrusion. Alternatively, the shape may be injection molded with a wick 140 placed inside the mold sidewall for adhering to the inner sleeve member sidewall 105. For example, the inner sleeve member side wall 105 is preferably constructed with inwardly directed protrusions 103 and outwardly directed protrusions 104, respectively, on its wall to increase its surface area and provide strength, surface area, and FIGS. As shown in FIGS. 13 and 20, various different compounds can be stored between any of the protrusions. The number of protrusions must be two or more and can be any suitable number that allows particulate chemical to be stored between the protrusions. 2, 12, 20, 21 and 22 are only examples of possible protrusions that can be made on the inner sleeve member 102. For example, the inner sleeve member 102 may be injection molded with curved or straight ribs projecting from its walls to compartmentalize the side walls 105 of the inner sleeve member and react with each other to absorb heat. Reactive compounds RCC of various compounds S capable of providing cooling may be stored, as well as dissolved compounds DCC of various compounds S capable of dissolving endothermically in the humidification liquid HL. Various protruding features, such as the protrusions described above, may be used to increase the strength and surface area of the inner sleeve member 102. The protruding features form channels for such protrusions, such as the inwardly directed protrusions 103 and outwardly directed protrusions 104 shown by way of example in FIGS. and allows the dry gas DG to fill and saturate the outer surface of the inner sleeve member 102 and, if necessary, the inner surface of the inner sleeve member 102. Preferably, the protruding protrusion of the inner sleeve member 102 also forms a channel along the inner sleeve member sidewall 105 to allow drying gas DG to fill and saturate the inner sleeve member 102. Preferably, the inner sleeve member 102 is lined with a wick layer 140 to absorb the humidifying liquid HL and retain a minimal amount of the humidifying liquid HL without spilling it due to osmotic pressure. The inwardly directed projections 103 and outwardly directed projections 104 of the inner sleeve member sidewall 105 must be in frictional tangential contact with the food container sidewall 100 to form a compartment between the inner sleeve member sidewall 105 and the food container sidewall 100. No.

Inner sleeve member sidewall 105 is circumferentially mounted in tangential frictional contact with food container sidewall 100 to at least partially cover food container sidewall 100 below dry gas seal 123 . Ultrasonic welding, adhesives and tape may be used to hold it securely in place and form a separate compartment with at least the food container sidewall 100. Preferably, the inner sleeve member sidewall 105 extends below the dry gas seal 123 to partially cover the exposed surface of the food container sidewall 100, but the inner sleeve member sidewall 105 also extends below the dry gas seal 123 to the food container. It is envisioned that sidewall 100 may be entirely encircled, and that inner sleeve member bottom wall 106 may extend over and encircle food container domed bottom wall 22 as a cup-like sleeve structure. The inwardly directed projections 103 and outwardly directed projections 104 must be sturdy and must prevent the inner sleeve member sidewall 105 from collapsing under reduced pressure.

A covering sleeve member 30 is provided. Covering sleeve member 30 is preferably made from one of the heat-shrinkable materials stretch-molded polyethylene terephthalate (PET), polyvinyl chloride (PVC), and other heat-shrinkable materials that also enclose food container 20. It is made in the form of a thin-walled cup-like structure that surrounds and encloses it in whole or in part. Preferably, the covering sleeve member 30 has a covering sleeve member sidewall 101 shaped to follow the contour of the food container sidewall 100. The covering sleeve member sidewall 101 can take on a variety of shapes, but as previously discussed, it must be possible to mate with a portion of the food container sidewall 100 during the manufacturing process. The covering sleeve member side wall 101 completely or partially covers the closed food container 20 containing the food P. Covering sleeve member sidewall 101 is preferably made from one of the heat-shrinkable materials stretch-molded polyethylene terephthalate (PET), polyvinyl chloride (PVC), and other heat-shrinkable materials; can be made of thin aluminum material as a deep drawn container and must be reformable to form a seal with the food container 20 by spin forming and crimping. Covering sleeve member sidewall 101 preferably extends partially over food container sidewall 100 and partially over food container top wall 107. Covering sleeve member sidewall 101 is a just-sliding fit over inner sleeve member 102 . When the covering sleeve member side wall 101 extends to cover the food container top wall 107, an extension grip 111 made from a simple plastic ring is provided that snaps to the food container top wall seam 114 to allow the user to close the extension grip 111. Since the food sleeve 20 can be gripped and rotated, the food sleeve 20 can be rotated relative to the covering sleeve member 30.

Covering sleeve member sidewall 101 covers inner sleeve member 102 and covers food container 20 in whole or in part. Covering sleeve member sidewall 101 preferably extends partially over food container sidewall 100 and partially over food container top wall 107. The covering sleeve member sidewall 101 has a covering sleeve member seal 108 that can be heat-shrinked to reduce its diameter and seal against the food container sidewall 100 to form a covering sleeve member sidewall seal 109. As shown in FIG. 17, the covering sleeve member sidewall 101 has support structures 25 such as channels and cavities that allow it to have sufficient structural strength to prevent collapse when dilution of the drying gas GS occurs. May be constructed.

Although it is anticipated that the covering sleeve member sidewall end 110 will be located at the covering sleeve member seal 108, it is contemplated that the covering sleeve member sidewall end 110 may extend beyond the covering sleeve member seal 108. When the sheathing sleeve member seal 108 is heat-shrinked or mechanically formed, the sheathing sleeve member sidewall 101 tightens around the surfaces of the sheathing sleeve member seal 121 and the dry gas seal 123, allowing the humidifying fluid to flow between the two seals. A chamber W is formed respectively. A humidifying liquid HL is hermetically stored between the humidifying liquid chambers w.

Covering sleeve member 30 is rotatable relative to food container sidewall 100. Advantageously, therefore, the dry gas seal 123 and the covering sleeve member seal 121 rotate together with the covering sleeve member 30 relative to the food container side wall 100. The sidewall 101 of the sheathing sleeve member can be deformed by compressive contraction around the sheathing sleeve member seal 121 to securely hold the sheathing sleeve member seal 121 and provide it for sealed rotation with the sheathing sleeve member 30. is expected. Covering sleeve member sidewall 101 is partially deformed by compressive contraction around covering sleeve member seal 121 to securely hold covering sleeve member seal 121 and provide for sealing rotation of it with covering sleeve member 30. It is expected that. However, although the covering sleeve member seal 121 may not rotate with the covering sleeve member 30, it is expected that it will still form a seal. However, the dry gas seal 123 must rotate in coordination with the covering sleeve member 30 relative to the food container sidewall 100.

The covering sleeve member sidewall 101 has a covering sleeve member seal 109 that can be heat-shrinked or mechanically formed as described above to allow the food container sidewall 100 to shrink and seal thereto. Covering the sleeve member sidewall 101 when deflated also seals against the dry gas seal 123 and presses it against the food container sidewall 100 to form a seal. It is anticipated that the sheathing sleeve member seal 108 will partially deform around the sheathing sleeve member seal 121 to provide a secure hold on the sheathing sleeve member seal 121 and rotation thereof with the sheathing sleeve member 30. be done. It is anticipated that the covering sleeve member sidewall 101 will also partially deform around the dry gas seal 123 to securely hold the dry gas seal 123 and provide for sealing rotation with the covering sleeve member 30 during rotation. This provides a first cooling actuation means θ when the covering sleeve member 30 rotates.

Covering sleeve member sidewalls 101 may be heat-shrinked or mechanically formed to constrict a portion of inner sleeve member 102 to restrict passage of humidifying liquid HL vapor Vw and drying gas DG in a controlled manner. It has a covering sleeve member restriction 128 that can form a steam passage 129a. When the covering sleeve member restriction 128 is retracted, the covering sleeve member restriction 128 tightens around the surface of the inner sleeve member 102 to close off the protrusion or projections and form a rotatable restricted steam passageway 129a. is expected. As the covering sleeve member sidewall 101 rotates, it is expected to slide and rotate over the restricted steam passageway 129a.

The covering sleeve member 30 has a covering sleeve member bottom wall 130 that sealingly connects to the covering sleeve member side wall 101. The sealing of the covering sleeve member bottom wall 130 connects to an inwardly projecting covering sleeve member retractable annular wall 133. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding.

The inner surface of the sheathing sleeve member partially defines a drying gas chamber DGS that extends over the inner sleeve member and the space defined by the inner sleeve member bottom wall 130 and the sheathing sleeve member collapsible annular wall 133.

It is anticipated that the covering sleeve member 101 may be made from one of spun aluminum, hydraulically formed aluminum, and deep drawn aluminum to provide all the necessary sealing. In such cases, the covering sleeve member shrinkable annular wall 133 may be made from one of heat-shrinkable PET and PVC materials and added to the covering sleeve member bottom wall 130 by ultrasonic welding or gluing. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding.

As shown, a thin-walled open-ended support cylinder 132 with a support cylinder hole 137 near the top end is connected to the cover sleeve member bottom wall 130 between the cover sleeve member side wall 101 and the cover sleeve member retractable annular wall 133. The cover sleeve member bottom wall 130 can be placed on top and function as a support member for the covering sleeve member bottom wall 130 with respect to the food container 20, so that the shrinkage force can prevent the covering sleeve member bottom wall 130 from collapsing. Covering sleeve member contractible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding.

The annular plastic heat-shrinkable vapor absorbent holding space 131 in the drying gas chamber DGS is a space defined by the inner surface of the support cylinder 132, the inner sheathing sleeve member collapsible annular wall 133, and the inner sheathing sleeve member bottom wall 130. formed between. An annular plastic heat shrink vapor absorbent holding space 131 is in fluid communication with the drying gas and is within the drying gas chamber DGS. An annular hot wax retention space 136 is also formed in a dry gas chamber DGS between the outer surface of the support cylinder 132, the inner surface of the covering sleeve member shrinkable annular wall 133, and the inner surface of the covering sleeve member bottom wall 130. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding. The annular thermal wax holding space 136 is optionally filled with a suitable thermal wax 138 that can be melted at temperatures ranging from 70° F. to 160° F. to adjust the amount of heat exposed to the covering sleeve member retractable annular wall 133. may be done. The support cylinder 132 prevents the covering sleeve member bottom wall 130 from collapsing and deforming in shape relative to the food container 20.

The covering sleeve member 30 rotates with the dry gas seal 123 and the dry gas seal 123 traverses the seal breaking structure 122 to break the seal formed by the dry gas seal between the food container sidewall 100 and the covering sleeve member sidewall 101. , and when exposing the humidifying liquid HL from the humidifying liquid chamber W to the drying gas chamber, a cooling actuating means θ is provided.

The inner sleeve member 102 is preferably designed with inwardly directed protrusions 103 and outwardly directed protrusions 104 as shown in FIGS. form. In such a case, the inwardly directed protrusions 103 abut the food container sidewall 100 and the outwardly directed protrusions 104 abut the covering sleeve member sidewall 101. This increases its strength and surface area, and as shown in FIG. This allows them to be stored in separate rooms. It is expected that each respective undulation serves as a storage means for a distinct compound S that dissolves and cools endothermically.

The annular plastic heat-shrinkable vapor absorbing material holding space 131 holds plastic heat-shrinkable vapor absorbing material D such as silica gel, molecular sieve, clay desiccant such as montmorillonite clay, calcium oxide, and calcium sulfide. The annular plastic heat shrink vapor absorbent retaining space 131 is preferably stretch formed by one of thermoforming, injection stretch blowing, and vacuum forming when the covering sleeve member 30 is formed. The covering sleeve member contractible annular wall 133 increases the volume of the drying gas chamber DGS in response to an increase in its temperature by deforming, thus diluting the drying gas contained therein. This deformation is caused by the plastic heat-shrinkable vapor-absorbing material D, which, when absorbing the humidifying liquid HL vapor from the humidified drying gas DG in the drying gas chamber DGS, is heated and thus heats the covering sleeve member shrinkable annular wall 133. . The dry gas chamber DGS is in fluid communication with the plastic heat shrink vapor absorber D and the restricted vapor passage 129a, so advantageously the annular plastic heat shrink vapor absorber holding space 131 is connected to the dry gas chamber DGS and It is in fluid communication with the interior of inner sleeve member 102 . When the cooling activation means θ is activated, the plastic heat-shrinkable vapor absorbing material D heats the covering sleeve member shrinkable annular wall 133. The covering sleeve member retractable annular wall 133 protrudes and enters the drying gas chamber DGS. The shape of the protrusion is important in improving the cooling performance of the device. The shape of the protrusion formed by the covering sleeve member retractable annular wall 133 can be an inverted cup, a dome, and preferably any suitable shape that minimizes the volume of the drying gas chamber DGS. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding.

The shape of the covering sleeve member retractable annular wall 133 should minimize the drying gas chamber DGS and maximize penetration into the drying gas chamber DGS. In the illustrated example, the shape of the protrusion formed by the covering sleeve member retractable annular wall 133 is inverted cup-like in shape and is a dome. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding. When heated, the covering sleeve member shrinkable annular wall 133 shrinks to minimize its area. The annular plastic heat-shrinkable vapor absorber holding space 131 expands outward to increase in volume, maximizing the volume of the drying gas chamber DGS and forcing the drying gas DG to maintain its initial pressure (preferably below atmospheric pressure). generates substantially less pressure than the As a result, the vapor pressures of the drying gas DG and the humidifying liquid vapor Vw in the drying gas chamber DGS are reduced.

Inner sleeve member 102 is preferably made from plastic materials such as PET and PVC. If made from a non-plastic material, the protrusions of the inner sleeve member 102 may be formed by adding a water-insoluble adhesive to the wicking material to form the inner sleeve member 102 and then shaping the material into the desired shape when the adhesive dries. It can also be formed by molding. The inner sleeve member 102 is capable of holding the humidifying liquid HL just against the food container side wall 100 when it is received, and the outer sleeve member is also capable of holding the chemical S against the food container side wall 100. It is envisaged that it could be made to have orientation protrusions 104.

To form the inwardly directed protrusions 103 and outwardly directed protrusions 104, the material used to make the inner sleeve member 102 is placed on a mold and is heat-shrinkable, if made from a heat-shrinkable material, from a plastic material. Formed by one of injection molding if made of wicking material, press molding with adhesive if made of wicking material. Thus, the inner sleeve member 102 can have inwardly directed protrusions 103 and outwardly directed protrusions 104 and, when bounded by the food container sidewall 100, absorbs not only liquid but also endothermic melting and cooling by their solvation. A separate compound S can also be maintained that can either react endothermically to produce and cool a humidifying liquid. It is also contemplated that the inner sleeve member 102 may be formed as a moldable wick material, such as cotton, with the addition of a dryable insoluble adhesive.

Cardboard 134 is optionally provided, but not required, to be adhered just over the covering sleeve member bottom wall 130 to act as an insulator and absorb the heat generated by the plastic heat shrink vapor absorber D. protect the consumer from possible burns. The cardboard 134 must be breathable, preferably with small cardboard holes to allow gas to flow freely to and from the atmosphere when the annular plastic heat shrink vapor absorber retaining space wall 133 is flattened. It has 135.

In all embodiments, it is anticipated that the material walls and interior of the inner sleeve member 102 may be injected with an ionizable compound S that has a reversible endothermic reaction with the humidification liquid HL. This can be done by layering the walls of the inner sleeve member 102 with ionizable salts such as potassium chloride, ammonium chloride, ammonium nitrate, and other types of endothermic salts that have an endothermic ionization potential. When made from heat-shrinkable plastic materials such as PET and PVC, the inner sleeve member 102 is heat-shrinked to its shape by thermal spraying at high impact pressure with a stream of particles of ionizable compound S. and simultaneously coating it with an ionizable chemical S to form its final shape. In all cases, the inner sleeve member 102 has, on its outer surface, a plastic heat-shrinkable vapor absorbing material D that allows only the humidifying liquid vapor Vw to pass through the drying gas chamber DGS, as will be explained later. It has a wick that must form a restricted steam passage 129a. This is easily accomplished with a plastic film material forming the inner sleeve member 102 by tying the wicking material onto the inner sleeve member restriction 128.

Another method of incorporating a soluble ionizable compound S, such as an endothermic salt, into the material of the inner sleeve member 102 is to use a polyvinyl acetate (PVA) layer on the outer wall of the inner sleeve member 102 to incorporate the ionizable chemical S. There is a method of attaching it to the PVA layer. Other lamination materials can be used for this purpose, such as humidifying fluid water-soluble adhesives.

Drying gas DG is provided inside the drying gas chamber DGS, preferably just below ambient atmospheric pressure. Drying gas GS is provided by a drying gas source DGS, which fills the space between the plastic heat-shrinkable vapor absorbent material D and the inner sleeve member 102 in the drying gas chamber e.

Manufacturing Method of First Embodiment Here, as shown in FIGS. 18 and 19, a method M for manufacturing the device will be described. This manufacturing method M generally applies to all embodiments, with the exception of some ordering of tasks, which may be modified or deleted as necessary. A standard food container 20 is provided. The provided covering sleeve member seal 121 and the covering sleeve member seal 121 are arranged circumferentially and sealingly around the food container side wall 100 in a plane parallel to the diametric plane of the food container 20 and at the food container top wall seam 114. tie around.

The dry gas seal 123 is provided as a rectangular seal, such as a rubber band, extending and disposed in a circumferentially inclined plane at a small angle relative to the diametric plane of the food container sidewall 100 to secure the covering sleeve member. Below seal 121 it has a maximum separation of about 50 mm and a minimum separation of about 20 mm. Preferably, a plastic self-adhesive label forming the seal-breaking structure 122 is provided and is attached to the food container sidewall 100 and positioned within and between the maximum separation gap between the dry gas seal 123 and the covering sleeve member seal 121. be done.

An inner sleeve member 102 is provided and circumferentially mounted to at least partially cover the food container sidewall 100 below the dry gas seal 123 using one of friction, adhesive, and double-sided adhesive tape. It will be done.

The covering sleeve member 30 is provided as a cup-shaped structure with straight covering sleeve member side walls 101, as shown in FIG. The covering sleeve member side wall 101 should be at least 50 mm higher than the food container 20 and should extend beyond the food container top wall 107. Covering sleeve member sidewall 101 is a snug fit over and surrounding inner sleeve member 102 .

A support cylinder 132 is placed on the covering sleeve member bottom wall 130 with a support cylinder hole 137 proximate to the food container 20 and forms an annular plastic heat shrink vapor absorbent retaining space 131 and an annular hot wax retaining space 136. The thermal wax 138 is arranged to fill the annular thermal wax holding space 136 , and the plastic heat-shrinkable vapor absorbing material D is filled into the annular plastic heat-shrinking vapor absorbing material holding space 131 .

A food container 20 with an inner sleeve member 102 , a seal breaking structure 122 , a covering sleeve member seal 121 and a dry gas seal 123 is inserted so as to be disposed on a support cylinder 132 inside the covering sleeve member 30 . be done.

The cylindrical rod CR is provided with a through hole TH in its length direction, and a three-way joint TFW is attached to the through hole TH. A first input of the three-way fitting TFW is connected by a dry gas hose DGH and is in fluid communication with a dry gas pressure canister DGC via a dry gas valve DGV. The second input of the three-way joint TFW is connected to the vacuum pump VP by a vacuum pump hose VPH via a vacuum valve Vv. The third input of the three-way joint TFW is connected to a humidifying liquid valve HLV which is connected to a humidifying liquid valve HLT by a humidifying liquid hose HLH.

The outer diameter of the cylindrical rod CR is accurately fitted inside the covering sleeve member 30, and about 20 mm is inserted into the open end of the covering sleeve member 30, and the covering sleeve member 30 is heat-shrinked to seal its surroundings. . The humidifying liquid valve HLV, drying gas valve DGV, and vacuum valve Vv are shut off.

The dry gas valve DGV at a low pressure of about 1 psig and the vacuum valve Vv are first opened, allowing the dry gas GS to flood the interior of the sheathing sleeve member 30 and pumping the moist air inside the sheathing sleeve member 30 using the vacuum pump VP. Allows gas to be expelled. After a few seconds of purge, the drying gas valve DGV is turned off and the vacuum pump VP lightly vaporizes the drying gas DG remaining in the covering sleeve member 30 to a pressure slightly below ambient atmospheric pressure. A shutoff valve may be provided to control the pressure, but the vacuum pump VP itself can be made to provide the necessary dilution.

Hot air HA from a heat source HG, such as a heat gun, is first directed at the location of the covering sleeve member closure 108, contracts and tightens around the surface of the dry gas seal 123 against the food container sidewall 100, and then the hot air HA is removed. This seals the drying gas GS at lean pressure in the drying gas chamber DGS below the drying gas seal 123.

The drying gas valve DGV and the vacuum valve Vv are then shut off, and the humidifying liquid valve HLV is opened, causing the humidifying liquid HL to flow into the annular space above the drying gas seal 123 between the food container side wall 100 and the covering sleeve member side wall 101. The space is allowed to fill to a level just below the covering sleeve member seal 121, and then it is shut off.

Hot air HA from the heat source HG is directed to the location of the covering sleeve member seal 108 to contract and tighten the covering seal 121 against the food container sidewall 100, after which the hot air HA is removed. As a result, the humidifying liquid HL is sealed, and a humidifying liquid chamber W is formed between the dry gas seal 123, the covering seal 121, the food container side wall 100, and the covering sleeve member side wall 101.

Excess material of the covering sleeve member 30 above the food container top wall seam 114 that is still attached to the cylindrical rod CR is then trimmed to create the covering sleeve member side wall end 110. Extension grip 111 is snapped onto food container top wall seam 114 to act as an extension of food container 20. The device 10 is now ready for use.

Method of operation of the device according to the first embodiment Before the food release means 113 is used, it is envisaged that the cooling activation means θ will be activated. However, if the food release means 113 is actuated before the cooling activation means θ, the pressure drop in the food container 20 will cause the food container side wall 100 to relax, loosening the dry gas seal against the food container side wall 100, and causing the food container side wall 100 to relax. By simply applying finger pressure 40 to press the covering sleeve member side wall 101 in the area of the dry gas seal 123, the device 123 is actuated to deform the dry gas seal 123 and the food container side wall 100, as shown in FIG. It is expected to allow the humidifying liquid HL to leak into the drying gas chamber DGS. In either case, the gravitational pressure difference causes the humidifying liquid HL to pass between the dry gas seal 123 and the food container side wall 100, thereby activating the cooling. Thus, when the food release means 113 is used for the first time, a second cooling activation means is provided. When the cooling actuation means θ is actuated, rotation of the covering sleeve member 30 having the covering sleeve member seal 121 and the dry gas seal 123 against the food container side wall 100 causes the seal breaking structure 122 to cross under the dry gas seal 123, and the humidifying liquid chamber The seal between W and the food container side wall 100 holding the humidifying liquid HL is released. The humidifying liquid HL enters between the outward projections and dissolves the ionic compound S held therein. Thereby, the first endothermic cooling of the humidifying liquid HL is performed. The humidifying liquid HL also saturates the inner sleeve member sidewall 105 and the wick 140 absorbs the humidifying liquid. The drying gas DG absorbs the humidifying liquid vapor Vw from the wick 140, and its evaporation causes a second further cooling of the humidifying liquid HL. Furthermore, a third cooling is achieved when the solution formed by the species of dissolved compound DCC of compound S and the humidifying liquid HL evaporates into drying gas GS, thereby drying the humidifying liquid.

The heat of vaporization H is removed as the drying gas DG becomes moist and lowers the dew point temperature. Note that the temperature of the drying gas DG does not rise in this process because the heat of evaporation h of the humidifying liquid HL is taken away by its dew point temperature. The higher dew point temperature drying gas DG saturates the drying gas chamber DGS and enters the restricted steam passage 129a. Dry gas DG is an electrogenic transport vehicle. The removal of polar water molecules in vapor form into the drying gas DG is due to the electrogenic heat transport potential. The dry gas DG changes the reactivity of the restricted steam passage 129a (respir. Physiol. 1997 Jul; 109(1):65-72). Negative ions in the drying gas DG attract polar molecules of the humidifying liquid HL in the restricted vapor passage 129a. This is why when the air is dry, we are more susceptible to static electricity.

The plastic heat shrink vapor absorbing material D may be one of a liquid, a gel, and a solid that absorbs the humidifying liquid HL vapor Vw. The humidifying liquid HL may also be a pressurized liquid in equilibrium with its vapor, such as an ammonium solution, a dimethyl ether solution, and a carbonate solution. In such cases, Table 1 provides various combinations of plastic heat shrink vapor absorbent D, drying gas GS, and humidifying liquid HL that can be used in the present invention.

The dry gas GS moistened with humidifying liquid vapor Vw enters through the restricted vapor passage 129a and then passes through the support cylinder hole 137 and is absorbed into the plastic heat-shrinkable vapor absorbent material D to dehumidify the vapor. The pressure is reduced and the dew point temperature of the dehumidified dry gas GS is much lower than the dew point temperature of the humidified dry gas DG in the dry gas chamber DGS. The dehumidified drying gas DG in the drying gas chamber DGS is drawn in again by the high vapor pressure of the drying gas chamber DGS, absorbing more vapor and transporting it to the plastic heat-shrinkable vapor absorbing material D. The plastic heat-shrinkable vapor-absorbing material D is heated as it adsorbs the humidifying liquid vapor Vw, and the annular plastic heat-shrinkable vapor-absorbing material retaining space wall 133, which has been stretched and formed in advance under tension, undergoes area deformation and It responds to an increase in its temperature by contraction. When heated, the annular plastic heat-shrink vapor absorbent retaining space wall 133 contracts in surface area and moves outward from the domed bottom 22 of the food container, increasing the volume of the drying gas chamber DGS and thus increasing the drying gas chamber DGS. A substantially lower vapor pressure is generated in the certain amount of dilute dry gas DG in the gas chamber DGS. As a result, the vapor pressure of the drying gas DG in the drying gas chamber DGS further decreases, and the humidifying liquid vapor Vw in the drying gas chamber DGS is drawn into the drying gas DG and evaporated. This deformation of the annular plastic heat-shrinkable vapor absorber retaining space wall 133 continues to generate more heat of vaporization h, and preferably flattens the annular plastic heat-shrinkable vapor absorber retaining space wall 133, thus making it more original. Increase the volume of the drying gas chamber DGS relative to its volume.

To prevent the covering sleeve member bottom wall 130 from losing its shape and deforming, the support cylinder 132 absorbs the compressive force of the annular plastic heat-shrinkable vapor absorbing material retaining space wall 133 against the food container bottom edge 21; Cover the sleeve member bottom wall 130 so that it does not deform. Therefore, the flattening of the annular plastic heat-shrinkable vapor absorbent retaining space wall 133 does not affect the structure of the covering sleeve member bottom wall 130. Due to the deformation and flattening of the annular plastic heat-shrinkable vapor absorbing material retaining space wall 133, the volume of the drying gas chamber DGS increases, and since there is a certain amount of drying gas DG in the drying gas chamber DGS, more Generates low pressure. The annular plastic heat shrink vapor absorbent holding space 131 is also made larger by flattening the annular plastic heat shrink vapor absorbent holding space wall 133. Thereby, the plastic heat-shrinkable vapor absorbent material D continuously shifts, moves, falls, and spreads on the flattened annular plastic heat-shrinkable vapor-absorbent holding space wall 133. This spreading is more effective when the plastic heat-shrinkable vapor absorbent material D is agitated and a larger surface area is assumed. Furthermore, the drying gas DG is preferably at atmospheric pressure when stored between the drying gas chambers DGS. The negative pressure generated in the dry gas DG causes the dry gas DG to absorb more of the humidifying liquid vapor Vw by evaporating the humidifying liquid HL. The expansion of the humidifying liquid HL by about 1840 times into the humidifying liquid vapor Vw in the drying gas chamber DGS due to gasification of the humidifying liquid HL is due to the expansion of the humidifying liquid HL by about 1840 times into the humidifying liquid vapor Vw in the drying gas chamber DGS due to the relationship with the annular plastic heat-shrinkable vapor absorbing material holding space 131. Increases relative vapor pressure. Advantageously, therefore, the humidifying liquid vapor Vw in the drying gas chamber DGS naturally desires to enter the plastic heat-shrinkable vapor absorbing material D. The drying gas DG is thus an electrogenic heat transport means for entraining the humidifying liquid vapor Vw into the plastic heat-shrinkable vapor absorbent material D without the need for a true vacuum.

When the drying gas DG delivers the humidifying liquid vapor Vw to the plastic heat-shrinkable vapor absorber D, the heat generated by the plastic heat-shrinkable vapor absorber D causes the actual temperature to rise. The heat from the plastic heat-shrinkable vapor absorber D is partially absorbed by the drying gas DG, and its dew point temperature is further reduced. As a result, the drying gas DG moves to the plastic heat-shrinkable vapor absorbing material D again and collects more humidifying liquid vapor Vw from the drying gas chamber DGS. Cooling continues in this manner and the ionizable compounds on the drying gas chamber DGS are dehydrated. Although ionizable compounds are not absolutely necessary for the invention to function, they improve the cooling efficiency since the drying gas DG absorbs the humidifying liquid vapor Vw even from the cold humidifying liquid HL. The final source of evaporative heat h is the food product P, which is cooled in this way. By drying Compound S back to its original form (if used), the drying gas chamber DGS is "salted out" and can be reused for further cooling. Once the drying gas DG is dried by the plastic heat-shrinkable vapor absorber D, it can be recooled for further cooling.

Furthermore, due to the deformation movement of the annular plastic heat-shrinkable vapor absorbing material holding space wall 133, the plastic heat-shrinking vapor absorbing material D moves and spreads, and the unexposed plastic heat-shrinking vapor absorbing material D acts to cause the plastic heat-shrinkable vapor absorbing material D to move and spread. It becomes possible to achieve absorption of the humidifying liquid vapor Vw into the absorbent material D. A heat-absorbing thermal wax 138, such as conventional candle wax, is disposed in an annular thermal wax retention space 136 between the support cylinder 132 and the covering sleeve member sidewall 101 to absorb the heat of vaporization h from the plastic heat-shrinkable vapor absorbing material D. It is expected that the heat of vaporization h can be stored. However, this has been found to be effective only when large quantities of plastic heat shrink vapor absorbent material D are used in large food containers 20 with capacities greater than 20 ounces.

Additionally, the coated sleeve member 30 can be made of a shrinkable material such as TPX™, which is formed from a combination of plastic materials called polymethylpentene and glass beads, so that the coated sleeve member 30 is It quickly releases the absorbed heat of vaporization h through its structure and quickly radiates the heat of vaporization h to the atmosphere. Furthermore, due to the deformation movement of the annular plastic heat-shrinkable vapor absorbing material retaining space wall 133, the atmosphere therein absorbs heat from the plastic heat-shrinkable vapor absorbing material D, and this heat is transferred to the flattened annular plastic heat-shrinkable vapor absorbing material D. As the heated air volume under the material holding space walls 133 is vented, it is removed either through cardboard holes 137 (if used) or directly to the atmosphere.

Cardboard 134 is provided, but is not required. Preferably, but not necessarily, the cardboard 134 is made to fit over and adhere to the covering sleeve member bottom wall 130 to protect the consumer from possible burns. The cardboard 134 has a small cardboard hole 135 in the center to allow gas to flow freely to the atmosphere due to the flattening of the annular plastic heat shrink vapor absorbent retaining space wall 133.

It is anticipated that in all embodiments, the walls and materials used to form the inner sleeve member 102 may be layered with an ionizable compound S that has a reversible endothermic reaction with the humidification liquid HL. .

Drying gas DG is provided inside the drying gas chamber DGS, preferably just below ambient atmospheric pressure. Drying gas GS is provided by a drying gas source DGS and fills the empty space between the drying gas chamber DGS, the plastic heat-shrinkable vapor absorbing material D, and the inner sleeve member 102.

Second Embodiment of the Invention Referring to FIGS. 11 and 12 and 13, a standard food container 20 is provided. As before, the food container 20 is preferably a cylindrical beverage container of standard design and is provided with standard food release means 112.

As shown in FIGS. 10, 11, and 12, as before, the covering sleeve member seal 121 can be one of O-ring seals, metal band seals, rubber band seals, putty seals, sealing wax seals, and adhesive bonding agents. It comes in the form of a thin loop structure made from one. Preferably, the covering sleeve member seal 121 is provided in the form of a loop band, typically in the shape of an O-ring. The cross-sectional dimension of the covering sleeve member seal 121 is preferably less than 4 mm. Covering sleeve member seal 121 should form a tight seal around food container top wall seam 114. The covering sleeve member seal 121 is circumferentially and sealingly disposed around the food container side wall 100 in a plane parallel to the diametric plane of the food container 20 and proximate the food container top wall 107 , and close to the food container top wall seam 114 . placed around.

As before, the inner sleeve member 102 includes an inner sleeve member side wall 105 and an inner sleeve member bottom wall 106, as described in the first embodiment; are preferably made from thin, impermeable versions of heat-shrinkable stretch-molded polyvinyl chloride (PVC) and heat-shrinkable stretch-molded polyethylene terephthalate (PET). Other materials may be used depending on how the inner sleeve member 102 is formed.

As before, the inner sleeve member 102 is first formed with a cylindrical inner sleeve member sidewall 105 and then formed into various shapes by one of compression molding and heat shrinking with protruding parts on its surface. Form protrusions. Alternatively, the shape may be injection molded or compression molded.

As before, the inner sleeve member side wall 105 is preferably made with inwardly directed protrusions 103 and outwardly directed protrusions 104 on its walls, respectively, to increase its surface area and provide strength, surface area, and As shown, a variety of different reactive compounds RCC can be stored between independent protrusions. The number of protrusions must be two or more so that at least the reactive compound RCC can be used in the device 10. Various protruding shapes on the inner sleeve member sidewall 105, such as the protrusions described above, may be used to increase the strength and surface area of the inner sleeve member 102. The protruding features form compartments with protrusions, such as inwardly directed protrusions 103 and outwardly directed protrusions 104 shown by way of example in FIGS. 11, 12, 13, and 20, to provide strength to the inner sleeve member 102 and to prevent reactive compounds from forming. Place the RCC into it and allow it to be filled and saturated with dry gas DG. Preferably, the protruding protrusion of the inner sleeve member 102 also forms a compartment on the inner sleeve member sidewall 105 to allow the drying gas DG to interact with the reactive compound RCC. The inwardly directed projections 103 of the inner sleeve member sidewall 105 should be in frictional tangential contact with the food container sidewall 100 to form a compartment for the chemical compound RCC between the inner sleeve member sidewall 105 and the food container sidewall 100. Must be.

Inner sleeve member sidewall 105 is circumferentially mounted in tangential frictional contact with food container sidewall 100 to at least partially cover food container sidewall 100 below covering sleeve member seal 121 . Grease, soft pliable adhesives and waxes may be used to hold it firmly in place and form a separate compartment with at least the food container sidewall 100. Preferably, the inner sleeve member sidewall 105 extends to partially cover as much of the exposed surface of the food container sidewall 100 below the covering sleeve member seal 121 as possible.

As before, dry gas seals 123 also come in the form of O-ring seals, metal band seals, rubber band seals, putty seals, and sealing wax seals, adhesive bonding agents, formed into thin loops, usually ring structures. . Dry gas seal 123 is circumferentially and sealingly disposed around inner sleeve member side wall 105 in a plane parallel to the diametric plane of food container 20 and proximate to inner sleeve member side wall lower edge 24 . Maximum distal separation between coated sleeve member seal 121 and dry gas seal 123 is optimal for this version of the invention to function. Dry gas seal 123 should have an outer diameter slightly larger than the outer diameter of outwardly directed protrusion 104 of inner sleeve member 102 when disposed around inner sleeve member sidewall lower edge 24 . This allows the dry gas seal 123 with the covering sleeve member 30 to form a suitable seal.

As before, the inner sleeve member side wall 105 may also entirely encircle the food container side wall 100 below the dry gas seal 123, and the inner sleeve member bottom wall 106 may be configured as a cup-shaped sleeve structure to form a food container dome. It is contemplated that it may extend over and around the mold bottom wall 22.

As before, the inwardly directed projections 103 of the inner sleeve member 102 are held firmly tangentially against the side wall 100 of the food container, preferably by friction. Again, the outwardly directed projections 104 and the food container sidewall 100 form a separate collection of compartments with the food container sidewall 100. Inwardly directed protrusion 103 and covering sleeve member sidewall 101 also form a separate collection of compartments above dry gas seal 123. The compartment formed by the outwardly directed protrusion 104 and the food container sidewall 100 is filled with a reactive compound RCC selected from a pair of hydrated compounds S that react endothermically to produce the humidifying liquid HL used by the device 10. It will be done. Each of the selected pairs of reactive compounds RCC are placed in adjacent compartments formed by outwardly directed projections 104 and food container sidewalls 100.

A covering sleeve member 30 is provided. Covering sleeve member 30 may be comprised of any of other materials such as stretch-molded polyethylene terephthalate (PET), polyvinyl chloride (terephthalate or PVC), and deep-drawn aluminum to enclose food container 20 in its entirety or Partially surround and wrap. Preferably, the covering sleeve member 30 has a covering sleeve member sidewall 101 that can fit snugly over the inner sleeve member sidewall 105 and has a shape that follows the contour of the food container sidewall 100. The sidewall 101 of the sheathing sleeve member can take a variety of shapes, but when the sheathing sleeve member sidewall 101 is hermetically fitted with a portion of the food container sidewall 100 and formed as described above, it provides a dry gas seal. 123 and the covering sleeve member seal 121 must be retained to allow the seal to form.

The covering sleeve member side wall 101 covers, in whole or in part, a closed food container 20 containing a food product P to which an inner sleeve member 102 is attached. Covering sleeve member sidewall 101 preferably extends partially over food container sidewall 100 and partially over food container top wall 107. Covering sleeve member sidewall 101 can be made of many types of materials, but preferably heat-shrinkable plastics such as PET and PVC are preferred. The covering sleeve member sidewall 101 may also be made of aluminum as a deep drawn container and must be reformable by spin forming and clamping to form a seal with the food container 20.

As before, the covering sleeve member 30 has a covering sleeve member bottom wall 130 that sealingly connects to the covering sleeve member side wall 101. The sealing of the covering sleeve member bottom wall 130 connects to an inwardly projecting covering sleeve member retractable annular wall 133. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding.

As previously mentioned, the covering sleeve member 101 is made from spun or deep drawn aluminum and formed to provide all the sealing required by partially spinning and rolling it. expected to obtain. In such cases, the covering sleeve member shrinkable annular wall 133 may be made from heat-shrinkable PET or PVC material and added to the covering sleeve member bottom wall 130 by ultrasonic welding or gluing. Optionally, a thin-walled open-ended support cylinder 132 with a support cylinder bore 137 near the top end of the cover sleeve member bottom wall 130 between the cover sleeve member side wall 101 and the cover sleeve member collapsible annular wall 133 It is placed at the opposite open end and placed in contact with the food container 20. If the covering sleeve member side wall 101 is made strong enough, the support cylinder 132 is not necessary.

Also, as previously mentioned, the annular plastic heat-shrinkable vapor absorbing material holding space 131 within the sheathing sleeve member 30 includes the inner surface of the support cylinder 132, the inner sheathing sleeve member shrinkable annular wall 133, and the inner sheathing sleeve member bottom wall. 130. The annular plastic heat-shrinkable vapor absorbent holding space 131 is filled with plastic heat-shrinkable vapor absorbent material D up to the height of the covering sleeve member shrinkable annular wall 133 .

An annular hot wax retention space 136 is also formed in the covering sleeve member 30 between the outer surface of the support cylinder 132, the inner surface of the covering sleeve member side wall 102, and the inner surface of the covering sleeve member bottom wall 130. The annular hot wax holding space 136 may optionally be filled to the height of the support cylinder 132 with a suitable hot wax 138 that can be melted at temperatures in the range of 70°F to 160°F. The support cylinder 132 prevents the covering sleeve member bottom wall 130 from collapsing and deforming in shape relative to the food container 20.

When the covering sleeve member is placed over the food container 20 and the attached inner sleeve member 102, the inner sleeve member bottom wall 106 rests on the support cylinder 137 and the outwardly directed projections 104 on the inner sleeve member side walls 105 , tangentially contacts the sleeve member side walls 101 to form a compartment between said walls. The covering sleeve member sidewall 101 covers the attached inner sleeve member 102 and covers the food container sidewall 100 in whole or in part. As shown in FIGS. 13 and 20, the inwardly directed projections 103 and the covering sleeve member sidewalls 101 form a collection of separate compartments above the dry gas seal 123. As shown in FIGS. Covering sleeve member sidewall 101 preferably extends partially over food container sidewall 100 and partially over food container top wall 107.

As before, the covering sleeve member sidewall 101 should fit snugly over the inner sleeve member 102 and just tangentially contact the dry gas seal 123. As before, the covering sleeve member sidewall 101 has a covering sleeve member seal 118 that in turn contracts in diameter to form a seal between the inner sleeve member sidewall 105 and the covering sleeve member sidewall 101. This seal seals the diluted drying gas GS to just below atmospheric pressure, thereby providing support cylinder 132, an annular hot wax holding space 136 with hot wax 138 therein, a plastic heat shrink vapor absorbing It is used to form a drying gas chamber DGS below the drying gas seal 123 which houses an annular plastic heat-shrinkable vapor absorbing material holding space 131 with material D housed therein.

Preferably, a number of reactive compounds RCC are then placed within the compartment thus formed by the inwardly directed projections 103 and the covering sleeve member sidewalls 101. These compartments are adjacent to the reactive compound RCC located in the compartment previously formed by the outwardly directed projections 104 and the food container sidewall 100. Of course, inward protrusions 103 and outward protrusions 104 can be used to respectively store separate and different species of reactive compounds RCC selected as pairs. Thus, more than one species of a pair of reactive compounds RCC can be used in device 10. Preferably, the various different reactive compounds RCC capable of reacting with each _{other endothermically are BA(OH)2.8H2O (} s) and _NH4SCN (s), and _NH4NO3 ( _s ). ) and NH ₄ CL(s). These reactive compounds RCC have humidifying liquid HL stored between their hydrated structures.

In this way, the humidifying liquid chamber w is formed above the dry gas seal 123 with the inward protrusion 103 and the outward protrusion 104 containing therein the reactive compound RCC having water as the humidifying liquid HL. . To avoid premature reactions, pairs of reactive compounds RCC that are capable of reacting with each other are placed in separate outward protrusions 104, each separated by an inward protrusion 103. The same applies to the reactive compounds placed on separate inwardly directed protrusions 103, each separated by an outwardly directed protrusion 104.

A dry gas GS diluted to just below atmospheric pressure is provided to fill and displace the sheathing sleeve member 30. Covering sleeve member sidewall 101 has a covering sleeve member seal 108 that can be reduced in diameter to seal over covering seal 121 and form a seal from covering sleeve member sidewall seal 109 . When the diameter of the covering sleeve member sealing portion 108 is reduced, a seal is formed by the covering seal 121 between the food container top wall seam 114 and the covering sleeve member 30, and the humidifying liquid chamber W is isolated from the atmosphere.

As before, it is anticipated that the covered sleeve member sidewall end 110 will be located in the covered sleeve member seal 108, but it is contemplated that the covered sleeve member sidewall end 110 may extend beyond the covered sleeve member seal 108. It will be done.

The covering sleeve member seal 108 is made of a heat-shrinkable material or rolls formed on a roll forming machine to reduce the diameter and seal against the covering seal 121 against the food seal top wall seam 114; When holding the diluted dry gas GS therein, it can be heated and heat-shrinked.

FIG. 13 shows the separation arrangement of the reactive compound RCC in the humidifying liquid chamber W.

Second Embodiment Manufacturing Method A standard food container 20 is provided.

As before, a dry gas seal 123 is provided and initially positioned sealingly circumferentially around the food container side wall 100 in a plane parallel to the diametric plane of the food container 20 and at the inner sleeve member side wall lower end 24 Tie it around and seal it.

As previously mentioned, inner sleeve member 102 is preferably provided as a cylindrical structure with inwardly directed projections 103 and outwardly directed projections 104. Inwardly directed protrusion 103 should have a diameter that provides a snug sliding fit on food container sidewall 100. Accordingly, the inner sleeve member 102 is slid over the food container sidewall 100 and placed over the dry gas seal 123 and is circumferentially attached to at least partially close the food container sidewall 100 above the dry gas seal 123. cover.

The desired species of reactive compound RCC are then loaded into each outwardly directed protrusion 104 forming a respective chamber.

As before, a covering sleeve member seal 121 is provided and securely disposed around the food container side wall 100 in a plane parallel to the diametric plane of the food container 20 and ties around the food container top wall seam 114.

As before, a covering sleeve member 30 is provided. The covering sleeve member side wall 101 should be longer than the food container 20 and in practice preferably extends at least 50 mm beyond the food container top wall 107 for manufacturing purposes.

To avoid refilling, as before, a support cylinder 132 (not shown as an example that is not absolutely necessary) is placed on the covering sleeve member bottom wall 130 with a support cylinder hole 137 close to the food container 20. , an annular plastic heat shrink vapor absorbent retaining space 131 and an annular hot wax retaining space 136 may be formed. A thermal wax 138 (not shown as an example which is not absolutely necessary) is arranged to fill the annular thermal wax holding space 136. The plastic heat-shrinkable vapor absorbing material D is filled into the annular plastic heat-shrinking vapor absorbing material holding space 131.

The subassembly consisting of the food container 20, inner sleeve member 102, covered sleeve member seal 121, and dry gas seal 123 is assembled with the inner sleeve member bottom wall 106 above the plastic heat shrink vapor absorbent material and the covered sleeve member side wall. 101 by friction. The desired species of reactive compound RCC is then charged into each inwardly directed protrusion 103 forming a respective chamber with a covering sleeve member sidewall 101.

A cylindrical rod CR is provided as before. The humidifying liquid valve HLV, drying gas valve DGV, and vacuum valve Vv are shut off.

The dry gas valve DGV at a low pressure of about 1 psig and the vacuum valve Vv are first opened, allowing the dry gas GS to flood the interior of the sheathing sleeve member 30 and pumping the moist air inside the sheathing sleeve member 30 using the vacuum pump VP. Allows gas to be expelled. After a few seconds of purge, the drying gas valve DGV is turned off and the vacuum pump VP lightly vaporizes the drying gas DG remaining in the covering sleeve member 30 to a pressure slightly below ambient atmospheric pressure. The hot air HA from the heat source HG is first directed to the location of the covering sleeve member side wall 118 and heat shrinks its diameter at the covering sleeve member sealing portion 119 to create a seal between the covering sleeve member side wall 100 and the gas seal 123 against drying. is formed and the dry gas seal 123 is sealed against the inner sleeve member sidewall 105, after which the hot air HA is removed. This traps the dilute dry gas GS in the plastic heat-shrinkable vapor absorber D below the dry gas seal 123.

As before, if made from heat-shrinkable plastic, the hot air HA is directed at the location of the sheathing sleeve member seal 108 on the sheathing sleeve member side wall 101, causing the sheathing sleeve member seal 108 to contract and shrink the sheathing sleeve member. Tightening around the surface of the seal 121 tightens it against the food container top wall seam 114 to form a seal, after which hot air HA is removed. Thereby, the humidifying liquid chamber W is sealed with dilute dry gas GS.

When made from deep drawn and spun aluminum, the forming rollers from the roll forming machine RFM are directed at the location of the food covering sleeve member seal 108 on the covering sleeve member sidewall 101 to cause the covering sleeve member seal 108 to contract. and tighten around the surface of the covering sleeve member seal 121 to form a seal against the food container top wall seam 114.

Therefore, the dilute pressure drying gas GS is sealed inside the humidifying liquid chamber w and the drying gas chamber DGS, and also permeates the plastic heat-shrinkable vapor absorbing material D. After that, the dry gas valve DGV and the vacuum valve Vv are shut off. As before, the excess material of the covering sleeve member 30 still attached to the cylindrical rod CR is trimmed to create the covering sleeve member sidewall ends 110. The device 10 is now ready for use.

Method of operation of the device The cooling actuation means 40 are actuated by deforming the drying gas seal 123 using finger pressure f, causing fluid communication between the humidifying liquid chamber W and the drying gas chamber DGS. It is anticipated that the cooling activation means 40 will be activated before the food release means 113 is used. However, if the food release means 113 is actuated before the cooling actuation means, the pressure drop in the food container 20 causes the food container sidewall 100 to relax, loosening the grip of the dry gas seal 123 against the inner sleeve member sidewall 105. , which is expected to cause fluid communication between the humidifying liquid chamber W, the drying gas chamber DGS and the plastic heat-shrinkable vapor absorbing material D.

Next, the covering sleeve member side wall 101 is manually massaged against the inner sleeve member side wall 105 to cause the reaction compounds RCC in the humidifying liquid chamber W to react with each other and to be endothermically cooled, and at the same time to generate the humidifying liquid HL. be able to. The massage deforms the inwardly directed and outwardly directed projections 104 of the inner sleeve member 102 such that the reactive compounds RCC mix and react with each other to provide a first cooling means in the device 10 by endothermic reaction cooling and at the same time It is possible to provide means for producing humidifying liquid HL for the second cooling means.

The dilution of the drying gas GS forces the humidifying liquid HL produced by the reaction to evaporate into the drying gas dg as humidifying liquid vapor Vw. The drying gas DG absorbs the humidifying liquid vapor Vw, which lowers the dew point temperature of the drying gas DG and it becomes a humidified gas in the third cooling means of the device 10. Additional heat of vaporization h is removed from the humidifying liquid HL as the drying gas DG becomes moist and lowers the dew point temperature. The drying gas DG with a higher dew point temperature saturates the drying gas chamber DGS and is absorbed by the plastic heat-shrinkable vapor absorber D in the annular plastic heat-shrinkable vapor absorber holding space 131 . The plastic heat-shrinkable vapor-absorbing material D is heated as it adsorbs the humidifying liquid vapor Vw, and the annular plastic heat-shrinkable vapor-absorbing material holding space wall 133 to which tension is applied by being stretched and formed deforms and contracts its area. in response to an increase in its temperature.

As before, when heated, the annular plastic heat shrink vapor absorbent retaining space wall 133 contracts its surface area and moves outwardly from the food container domed bottom wall 22, causing the drying gas chamber DGS and the humidifying liquid The volume of the chamber W is increased, thereby producing a substantially lower vapor pressure in the quantity of dilute drying gas DG in the drying gas chamber DGS. As a result, the vapor pressure of the drying gas DG in the drying gas chamber DGS decreases. This lowers the pressure in the drying gas chamber DGS and absorbs more humidifying liquid vapor Vw to continue the cooling process.

Furthermore, due to the deformation movement of the annular plastic heat-shrinkable vapor absorbing material holding space wall 133, the plastic heat-shrinking vapor absorbing material D moves and spreads, and the unexposed plastic heat-shrinking vapor absorbing material D acts to cause the plastic heat-shrinkable vapor absorbing material D to move and spread. It is now possible to achieve an absorption of the humidifying liquid vapor Vw into the absorbent material D, and a second cooling means is provided by the evaporation of the humidifying liquid HL produced by the reaction.

Third Embodiment of the Invention Referring to FIG. 15, a standard food container 20 is provided. This embodiment is just another version of the first and second embodiments with the same elements. The difference between this third embodiment and the first embodiment is that a dry gas seal 123 is made at the inner sleeve member side wall upper edge 105a of the inner sleeve member side wall 105 and the food container side wall 100.

As before, the covering sleeve member seal 121 is made from one of an O-ring seal, a metal ring seal, a rubber band seal, a putty seal, and a sealing wax seal, as described in the first embodiment of the invention. It is provided in the form of a thin loop structure and an adhesive bonding agent. Covering sleeve member seal 121 should be expandable to form a tight sealing band around food container 20. The loop diameter of the covering sleeve member seal 121 is circumferentially and sealingly disposed about the food container top wall seam 114 in a plane parallel to the diametric plane of the food container 20.

As before, the dry gas seal 123 can be in the form of O-ring seals, metal band seals, rubber band seals, putty seals, and sealing wax seals, adhesive bonding agents, as described in the first embodiment of the invention. Also provided are thin loops, usually shaped into ring structures. The dry gas seal 123 is disposed in a circumferential seal around the food container sidewall 100 in a plane parallel to the diametrical plane of the food container 20 and spaced approximately 20 mm from the covering sleeve member seal 121 .

As before, the thin cup-shaped inner sleeve member 102 includes an inner sleeve member side wall 105 and an inner sleeve member bottom wall 106. The inner sleeve member 102 is a thin walled cup-like structure with an inner sleeve member sidewall 105 and an inner sleeve member bottom wall 106 that partially surrounds the food container sidewall 100 forming an annular gap with the food container sidewall 100.

As before, inner sleeve member 102 is preferably formed from any injection molded plastic material such as PET and PVC. Inner sleeve member 102 may also be formed as a thin deep drawn aluminum cup. Although the inner sleeve member 102 can be injection molded, it is anticipated that the inner sleeve member 102 will be made from heat-shrinkable plastic materials such as PET and PVC. Thus, the inner sleeve member 102 is tall enough to surround the food container bottom dome wall 22 such that the inner sleeve member side wall 105 extends along the majority of the food container side wall 100 with the inner sleeve member upper edge 105a directly above the dry gas seal 123. Should be covered. Inner sleeve member sidewall 105 is reduced in diameter to clamp against dry gas seal 123 to form a fluid seal between food container sidewalls 100. The inner surface of the inner sleeve member side wall 105, the dry gas seal 123, the outer surface of the food container side wall 100, the outer surface of the food dome-shaped bottom wall 22, and the inner surface of the inner sleeve member bottom wall 106 form a humidifying liquid chamber filled with humidifying liquid HL. W and partially surrounds the food container side wall 100 and the food dome-shaped bottom wall 22. The humidifying liquid fills the humidifying liquid chamber W up to just below the dry gas seal 123. Accordingly, when the inner sleeve member 102 is heat-shrinked or crimped to seal the dry gas seal 123, the dry gas seal 123 forms a partial seal between the inner sleeve member sidewall 105 and the food container sidewall 100; A sealed humidifying liquid chamber W containing a humidifying liquid HL is formed. Therefore, the humidifying liquid HL partially surrounds the food container bottom dome wall 22 and the food container side wall 100.

As before, wick 140 is optionally provided, but not required. Wick 140 is coupled to the outwardly facing wall of inner sleeve member sidewall 105 as previously discussed.

As before, the sheathing sleeve member sidewall 101 has a sheathing sleeve member seal 118 that can be reduced in diameter to form a restricted steam passageway 119a on the wick 140 relative to the inner sleeve member sidewall 105. . Compression of the covering sleeve member seal 118 also causes the dry gas seal 123 to seal between the inner sleeve member sidewall 105 and the food container sidewall 100.

As before, the covering sleeve member seal 108, when contracted in diameter, forms the covering sleeve member seal 109 with the covering seal 121 and tightens around the food container top wall seam 114 to form the drying gas chamber DGS. . The drying gas chamber DGS includes a covering sleeve member seal 121 , a covering sleeve member sidewall 101 , a food container sidewall 100 partially above the drying gas seal 123 , a drying gas seal 123 , and an outwardly facing surface of the inner sleeve member 102 . It extends between. A drying gas DG, preferably just below ambient atmospheric pressure, is provided inside the drying gas chamber DGS.

As before, the covering sleeve member 30 has a covering sleeve member bottom wall 130 that sealingly connects to the covering sleeve member side wall 101. The sealing of the covering sleeve member bottom wall 130 connects to an inwardly projecting covering sleeve member retractable annular wall 133. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding.

The food container 20 is preferably a cylindrical beverage container of standard design with a standard food product release means 113 and a standard food product outlet 112.

A covering sleeve member 30 is provided. The previously described covering sleeve member 30 is preferably made from one of stretch-molded, stretch-blown PET and PVC to form a heat-shrinkable covering sleeve member 30 in the form of a thin-walled cup-shaped sleeve, which It can also be formed from deep-drawn thin-walled aluminum. The covering sleeve member 30 has a covering sleeve member sidewall 101 that wholly or partially surrounds the food container 20 with an inner sleeve member 102 attached to the food container sidewall 100. The sidewall 101 of the sheathing sleeve member can take on a variety of shapes to provide strength, but, as previously discussed, must allow the sheathing sleeve member sidewall 101 to mate with a portion of the food container sidewall 100. . The covering sleeve member side wall 101 completely or partially covers the closed food container 20 containing the food P. Covering sleeve member sidewalls 101 can be made of other plastic materials that can shrink when heat is applied to their surfaces. Covering sleeve member sidewall 101 preferably extends partially over food container sidewall 100 and partially over food container top wall 107. Covering sleeve member sidewall 101 is a tight sliding fit and circumferentially surrounds wick 140 of inner sleeve member 102 . Covering sleeve member sidewall 101 preferably extends partially over food container sidewall 100 and partially over food container top wall 107. Although it is anticipated that the covering sleeve member sidewall end 110 will be located at the covering sleeve member closure 108, it is anticipated that the covering sleeve member sidewall end 110 will extend beyond the covering sleeve member closure 108 and above the food container top wall 107. It is considered good. When the covering sleeve member seal 108 contracts, it tightens around the surface of the inner sleeve member 102, the surface of the dry gas seal 123, the surface of the covering sleeve member seal 121, and partially the surface of the food container sidewall 100. forming an annular drying gas chamber DGS defined in part by the surface of the side wall of the covering sleeve member.

Covering sleeve member 30 protects inner sleeve member 102 . When the covering sleeve member side wall 101 heat shrinks, it should not tighten around the surface of the inner sleeve member 102 and the humidifying liquid vapor Vw should pass between the covering sleeve member side wall 101 and the outward facing inner sleeve member side wall 105. We have to make it possible. It is anticipated that the covering sleeve member seal 118 will partially deform around the inner sleeve member 102 to securely hold it and provide a restricted steam passageway 119a.

The outwardly facing surface of the inner sleeve member side wall 105, the drying gas seal 123, and the inwardly facing surface partially covering the sleeve member 30 form a drying gas chamber DGS. The outward facing surface of the food container side wall 100, the covering sleeve member seal 121, and partially the inward facing surface of the food container side wall 101 form a humidifying fluid chamber w.

The covering sleeve member 30 has a covering sleeve member bottom wall 130 that sealingly connects to the covering sleeve member side wall 101. The sealing of the covering sleeve member bottom wall 130 connects to an inwardly projecting covering sleeve member retractable annular wall 133. Covering sleeve member collapsible annular wall 133 is flexible and can respond to pressure changes by collapsing or expanding. Covering sleeve member shrinkable annular wall 133 is filled with plastic heat shrink vapor absorbing material D up to the level of covering sleeve member shrinkable annular wall 133. The inner surface of the sheathing sleeve member 30 below the sheathing sleeve member seal 121 forms a drying gas chamber DGS containing a drying gas GS.

It is anticipated that the covering sleeve member 101 may be made from spun or deep drawn aluminum and formed to provide all the sealing required by partially spinning and rolling it. In such cases, the covering sleeve member shrinkable annular wall 133 may be made from heat-shrinkable PET or PVC material and added to the covering sleeve member bottom wall 130 by ultrasonic welding or gluing. Optionally, a thin-walled open-ended support cylinder 132 provided as before with a support cylinder hole 137 near the top end provides a sheath between the sheathing sleeve member side wall 101 and the sheathing sleeve member retractable annular wall 133. It is placed at the opposite open end of the sleeve member bottom wall 130 and contacts the inner sleeve member bottom wall 105 . If the covering sleeve member side wall 101 is made strong enough, the support cylinder 132 is not necessary.

The annular plastic heat-shrinkable vapor absorbent holding space 131 in the drying gas chamber DGS is a space defined by the inner surface of the support cylinder 132, the inner sheathing sleeve member collapsible annular wall 133, and the inner sheathing sleeve member bottom wall 130. formed between. An annular plastic heat-shrinkable vapor absorbent holding space 131 is in fluid communication with and within the drying gas chamber DGS. An annular hot wax retention space 136 is formed in the dry gas chamber DGS between the outer surface of the support cylinder 132, the inner surface of the covering sleeve member side wall 102, and the inner surface of the covering sleeve member bottom wall 130. The annular hot wax holding space 136 may optionally be filled with a suitable hot wax 138 that can be melted at a temperature in the range of 70°F to 160°F. The support cylinder 132 prevents the covering sleeve member bottom wall 130 from collapsing and deforming in shape relative to the food container 20.

The cooling actuating means 40 uses a finger f to push down the covering sleeve member side wall 101 at the location of the drying gas seal 123, deforming it and exposing the humidifying liquid HL from the humidifying liquid chamber W to the drying gas chamber e. Provided when

It is anticipated that the inner sleeve member 102 can have a shape and configuration that can help increase surface area to aid evaporation in the drying gas chamber DGS. It is anticipated that the ionizable compound S may be selected from a species of dissolved compound DCC that dissolves endothermically and may be disposed on the inward protrusion 103 of the inner sleeve member 102 as described above. This can be done by injecting the ionizable soluble compound DCC into the outwardly facing surface of the inner sleeve member 102, as previously discussed. A restricted steam passage 119a is formed by tightening the covering sleeve member seal 118 on the wick 140.

The annular plastic heat-shrinkable vapor absorbing material holding space 131 holds plastic heat-shrinkable vapor absorbing material D such as silica gel, molecular sieve, clay desiccant such as montmorillonite clay, calcium oxide, and calcium sulfide. The annular plastic heat shrink vapor absorbent retaining space 131 is stretch molded from heat shrink materials including various forms of heat shrink PET and various forms of heat shrink PVC. Covering sleeve member contractible annular wall 133 responds to heat by deforming and contracting its surface area. Advantageously, the covering sleeve member shrinkable annular wall 133 tends to shrink in surface area and flatten with the heat received from the plastic heat shrink vapor absorbing material, increasing the volume of the drying gas chamber DGS. This deformation is caused by the plastic heat-shrinkable vapor absorbing material D being heated when it absorbs the humidifying liquid HL vapor Vw from the humidified drying gas DG in the drying gas chamber DGS. The drying gas GS in the drying gas chamber DGS is in fluid communication with the plastic heat shrink vapor absorber D and the restricted vapor passage 119a, so advantageously the annular plastic heat shrink vapor absorber retaining space 131 is It is in fluid communication with the outer wall of sleeve member 102 .

The shape of the covering sleeve member retractable annular wall 133 must minimize the drying gas chamber DGS before being heated, and therefore the penetration into the drying gas chamber DGS maximizes the volume of the drying gas chamber DGS and must be designed to increase. In the example shown in FIG. 1, the shape of the covering sleeve member collapsible annular wall 133 is an inverted cup. However, it can take many shapes, as shown in the various diagrams.

When heated, the covering sleeve member shrinkable annular wall 133 shrinks to minimize its area. The annular plastic heat-shrinkable vapor absorber retaining space 131 expands and moves outward, increasing the volume of the drying gas chamber DGS and forcing the drying gas DG from an initial pressure that is preferably slightly less than ambient atmospheric pressure. It also produces substantially lower pressures. This reduces the vapor pressure of the drying gas DG and any vapor within the drying gas chamber DGS, and thus the vapor pressure within the inner sleeve member 102. Therefore, the covering sleeve member sidewall 100 is designed with annular projections or lateral projections to strengthen it and prevent it from collapsing under the dilution forces generated by the plastic heat-shrinkable vapor absorbing material D. It is expected that this may be possible. For example, the inwardly directed protrusions 103 and outwardly directed protrusions 104 shown in FIG. Good as sufficient to provide. It is expected that the humidifying liquid chamber W can sufficiently hold the humidifying liquid HL without overflowing when receiving the humidifying liquid HL.

As before, the outwardly facing surface of the inner sleeve member 102 forms part of the drying gas chamber DGS. This surface is heat-shrinked to form its shape by thermally spraying it with a stream of fine particles of an ionized compound carried by heated air at high thermal shock pressures. It can also be layered with an ionizable compound S during formation. A drying gas DG, preferably at a pressure slightly lower than atmospheric pressure, is prepared inside the drying gas chamber DGS, and the drying gas DG is filled with the drying gas chamber DGS, and between the drying gas chamber DGS (low pressure) and the humidifying liquid chamber W. Create a slight pressure difference.

FIG. 16 shows the device 10 according to the fourth embodiment when the cooling means F are activated.

Third Embodiment Manufacturing Method This method is essentially the same as the steps required for the first embodiment, except for minor differences, in which a standard food container 20 is provided.

As before, a covering sleeve member seal 121 is provided, the covering sleeve member seal 121 being enlarged and firmly disposed circumferentially around the food container side wall 100 in a plane parallel to the diametric plane of the food container 20; Tie around the food container top wall seam 114.

As before, a dry gas seal 123 is provided, enlarged and circumferentially around the food container top wall 107 approximately 20 mm or so below the covering sleeve member seal 121 in a plane parallel to the diametric plane of the food container 20. the food container side wall 100.

The inner sleeve member 102 is provided in the form of a cup sleeve as previously described and frictionally fits around the food container sidewall 100 to cover the dry gas seal 123. As before, a wick 140 is optionally provided and joined to the outwardly facing wall of the inner sleeve member sidewall 105.

The humidifying liquid HL is poured into the inner sleeve member 102, filling the humidifying liquid chamber W between the food container and the inner sleeve member 102 to just below the dry gas seal 123.

The hot air HA is first directed against the inner sleeve member 102 at the location of the dry gas seal 123, causing the inner sleeve member 102 to partially contract and tighten around the surface of the dry gas seal 123, after which the hot air HA is removed. . As a result, the humidifying liquid HL is sealed, and the annular gap between the food container and the internal sleeve member 102 forms a sealed humidifying liquid chamber w extending directly below the dry gas seal 123.

As before, the covering sleeve member 30 is provided as a cup-like structure with straight covering sleeve member side walls 101, as shown in FIG.

As before, the covering sleeve member side wall 101 should be higher than the food container 20 and should extend at least 50 mm beyond the food container top wall 107. Covering sleeve member sidewall 101 fits over inner sleeve member 102 .

As before, a support cylinder 132 is placed on the covering sleeve member bottom wall 130 with a support cylinder hole 137 proximate to the food container 20, forming an annular plastic heat shrink vapor absorbent retention space 131 and an annular hot wax retention space 136. do. As before, the thermal wax 138 is arranged to fill and retain the annular thermal wax retention space 136 and the plastic heat shrink vapor absorbent material D is filled into the annular plastic heat shrink vapor absorbent retention space 131. .

As before, the food container 20 with the inner sleeve member 102 , the attached inner sleeve member 102 , the covering sleeve member seal 121 , and the dry gas seal 123 is mounted on a support cylinder 132 inside the covering sleeve member 30 . Inserted so that it is placed above.

As before, the cylindrical rod CR is provided with a through hole TH in its length direction, and a three-way joint TFW is attached to the through hole TH. As before, the first input of the three-way fitting TFW is connected by a dry gas hose DGH and is in fluid communication with a dry gas pressure canister DGC via a dry gas valve DGV. As before, the second input of the three-way joint TFW is connected to the vacuum pump VP by a vacuum pump hose VPH via a vacuum valve Vv. As before, the third input of the three-way joint TFW is connected by the humidifying liquid tank HLT via the humidifying liquid valve HLV.

As before, the outer diameter of the cylindrical rod CR is precisely fitted inside the covering sleeve member 30, so that about 20 mm is inserted into the open end of the covering sleeve member 30, and the covering sleeve member 30 seals around it. is heat-shrinked. The humidifying liquid valve HLV, drying gas valve DGV, and vacuum valve Vv are shut off.

As previously mentioned, drying gas valve DGV, regulated at a low pressure of about 1 psig, and vacuum valve Vv are first opened to flood the interior of coating sleeve member 30 with drying gas GS, which is then pumped using vacuum pump VP. , the moist air and gas inside the inner sleeve member 102, the drying gas chamber DGS, and the covering sleeve member 30 are expelled. After a few seconds of purge, the drying gas valve DGV is turned off and the vacuum pump VP lightly vaporizes the drying gas DG remaining in the covering sleeve member 30 to a pressure slightly below ambient atmospheric pressure. A shutoff valve may be provided to control the pressure, but the vacuum pump VP itself can be made to provide the necessary dilution.

The hot air HA from the heat source HS is directed to the food covering sleeve member seal 108 of the covering sleeve member sidewall 101 and contracts and tightens around the covering seal 121, after which the hot air HA is removed. As a result, the dry gas GS is formed in a sealed manner within the dry gas chamber DGS.

The excess material of the covering sleeve member 30 attached to the cylindrical rod CR is then trimmed to create the covering sleeve member sidewall ends 110. The device 10 is now ready for use.

Method of operation of the device Before the food release means 113 is used, it is envisaged that the cooling actuation means 40 will be actuated by the pressure of the finger f to deform the dry gas seal 123. However, if the food release means 113 is used before the cooling actuation means 40, the pressure drop due to the lack of a seal in the food P and the lack of a seal in the carbonated food container 20 will cause the food container side wall 100 to relax and thus Compromising the integrity of the seal formed by the dry gas seal 123 between the inner sleeve member 102 and the covering sleeve member sidewall 101, and the slight dilution of the dry gas GS, the dry gas chamber DGS (low pressure) and the humidification It is expected that a pressure difference will occur between the liquid chamber w and the liquid chamber w. In either case of the cooling actuation means 40, the humidifying liquid HL naturally evaporates the humidifying liquid vapor Vw from the humidifying liquid chamber W into the drying gas chamber DGS. The slight dilution of the drying gas GS creates a pressure difference between the drying gas chamber DGS (low pressure) and the humidifying liquid chamber w. In both cases of the cooling actuation means 40, the humidifying liquid vapor Vw is naturally evaporated and enters the drying gas chamber DGS due to the pressure difference between the drying gas chamber DGS and the humidifying liquid chamber W. This starts the cooling process by evaporating the humidifying liquid vapor Vw into the drying gas GS. The same thing happens if the food release means 113 are used before the cooling activation means 40. When the carbonation pressure is released from the food P, the hold of the drying gas seal 123 on the side wall 100 of the food container weakens, and when the drying gas GS becomes slightly diluted, the drying gas chamber DGS (low pressure) and the humidifying liquid chamber w A pressure difference occurs between the two. In both cases of the cooling actuation means 40, the humidifying liquid vapor Vw is naturally forced to enter the drying gas chamber DGS. The humidifying liquid vapor Vw passes through a drying gas chamber DGS having a drying gas DG therein. The drying gas chamber DGS is expected to contain compound S therein. Thereby, further endothermic cooling is performed. The dry gas GS vaporizes the humidifying liquid HL into humidifying liquid vapor Vw, and evaporative cooling is performed. The drying gas DG absorbs the humidifying liquid vapor Vw, which lowers the dew point temperature of the drying gas DG and it becomes a humidified gas. The heat of vaporization H is removed as the drying gas DG becomes moist and lowers the dew point temperature. As before, the plastic heat-shrinkable vapor absorbent material D is heated as it adsorbs the humidifying liquid vapor Vw, and the annular plastic heat-shrinkable vapor-absorbent holding space wall 133, which is tensioned by being stretch-formed, It responds to an increase in its temperature by deformation and contraction of its area.

As before, when heated, the annular plastic heat shrink vapor absorbent retaining space wall 133 contracts its surface area and moves outwardly from the food container domed bottom wall 22, reducing the volume of the drying gas chamber DGS. increased, thereby producing a substantially lower vapor pressure in the constant volume of dilute drying gas DG in the drying gas chamber DGS. As a result, the vapor pressure of the drying gas DG in the drying gas chamber DGS decreases. The pressure in the drying gas chamber DGS is now lower and the humidifying liquid vapor Vw is therefore drawn into the drying gas chamber DGS at an accelerated rate. This deformation of the annular plastic heat-shrinkable vapor absorbent retaining space wall 133 continues to generate more heat of vaporization h, causing the annular plastic heat-shrinkable vapor absorbent retaining space wall 133 to flatten, thus making the original The volume of the drying gas chamber DGS is increased relative to the volume of the drying gas chamber DGS. Due to the deformation and flattening of the annular plastic heat-shrinkable vapor absorbing material retaining space wall 133, the volume of the drying gas chamber DGS increases, and since there is a certain amount of drying gas DG in the drying gas chamber DGS, more Generates low pressure. The annular plastic heat shrink vapor absorbent holding space 131 is also made larger by flattening the annular plastic heat shrink vapor absorbent holding space wall 133. As before, this causes the plastic heat shrink vapor absorber D to continuously shift, move, fall and unfurl onto the flattened annular plastic heat shrink vapor absorber retaining space wall 133. This spreading is more effective when the plastic heat-shrinkable vapor absorbent material D is agitated and a larger surface area is assumed. The drying gas DG is thus an electrogenic heat transport means for entraining the humidifying liquid vapor Vw into the plastic heat-shrinkable vapor absorbing material D without the need for a vacuum.

Combinations of humidifying liquid HL and plastic heat-shrinkable vapor absorbing material D are summarized in Table 1 below.

FIG. 16 shows a third embodiment in which a dry gas seal 123 is positioned approximately midway along the food container sidewall 100 to create a space above the humidifying liquid chamber and retain dissolved compounds DCC above the dry gas seal 123. Here is yet another version of . FIG. 16 also shows outwardly heat shrinkable protrusions 141 forming the bottom wall of inner sleeve member 102. FIG. The heat-shrinkable protrusion 141 is located outwardly relative to the food container 20, which increases the volume of the drying gas chamber DGS when heated by the plastic heat-shrinkable vapor absorber D, while at the same time it reduces the volume of the humidifying liquid chamber W. This is an example of a structure that stands out. It acts as a pump for the humidifying liquid HL to rise and interact with the dissolved compounds DCC to provide endothermic cooling by their solvation. At the same time, the humidifying liquid HL is evaporated by the drying gas DG into humidifying liquid vapor Vw, which is further cooled by evaporation. Therefore, by adjusting the amount of humidifying liquid HL pumped into the dissolved compound DCC and the evaporation rate of the humidifying liquid HL, the drying and dissolution of the dissolved compound DCC can be controlled and repeated using the same amount of chemical. The solvation process and cooling can be repeated by providing cooling.

Claims (14)

A self-cooling device,
a food container having a food container wall with an outer surface of the food container wall;
a first chamber connected to the food container and containing a humidifying liquid;
a second chamber extending over at least a portion of the outer wall of the food container and in thermal communication with the outer wall of the food container, the second chamber containing a drying gas having a dew point of less than 10°F (-12.22°C) at ambient atmospheric pressure; a second chamber containing;
a barrier structure that seals and separates the first chamber from the second chamber;
a humidifying liquid release mechanism for opening fluid communication between the first chamber and the second chamber in the barrier structure, wherein actuation of the humidifying liquid releasing mechanism causes at least a portion of the humidifying liquid to flow into the first chamber and the second chamber; A self-cooling device comprising a humidifying liquid discharge mechanism that discharges humidifying liquid into two chambers. 2. The apparatus of claim 1, wherein the food container comprises a product outlet and a product release mechanism operative to release food through the product outlet. 3. The apparatus of claim 2, wherein the food container has a cylindrical food container side wall, a food container top wall, and a food container bottom wall, the food container top wall comprising the product outlet. 4. The apparatus of claim 3, wherein the second chamber extends over the bottom wall of the food container. a covering sleeve member having a covering sleeve member wall substantially impermeable to liquids, vapors and gases, the covering sleeve member wall being spaced outwardly from the food container wall; a rotatably sealed covering sleeve member sealing portion on the food container wall, defining a closed space between the food container wall and the covering sleeve member, the closed space including the first chamber and the covering sleeve member; 5. The apparatus of claim 4, containing and defining a second chamber and containing the barrier structure between the first chamber and the second chamber. further comprising an extended grip extending upwardly above the covering sleeve member, wherein the covering sleeve member is rotatable relative to the food container wall, and the barrier structure is arranged within the enclosed space to accommodate the food container wall and the food container wall. a ring structure in sealing contact with the covering sleeve member and slidable against the food container wall; With structure and rotatably aligned protrusions,
By grasping the extension grip and the covering sleeve member and rotating the extension grip, and thus the food container, relative to the covering sleeve member, the ring structure extends relative to the projection into a position where it extends over the projection. 6. The apparatus of claim 5, wherein a ring structure is moved to open fluid communication between the first chamber and the second chamber. 5. The apparatus of any one of claims 1 to 4, wherein the second chamber further comprises an endothermic compound. The barrier structure includes a dry gas seal extending circumferentially of the food container wall and spaced below the covering sleeve member seal, the first chamber being above the dry gas seal. the second chamber is defined below the dry gas seal;
The apparatus further comprises an inner sleeve member in the second chamber between the food container wall and the covering sleeve member, the inner sleeve member being injected with an endothermic compound. The device described. 9. A device according to claim 7 or claim 8, wherein the endothermic compound is potassium chloride, ammonium chloride or ammonium nitrate. 10. The device according to any one of claims 1 to 9, wherein the humidifying liquid comprises water or dimethyl ether. 11. The method of claim 1, wherein the dry gas comprises one of substantially dry air, substantially dry nitrogen, and substantially dry carbon dioxide. Device. 2. The apparatus of claim 1, wherein the food container is a can. 13. A device according to any preceding claim, wherein the pressure in the second chamber is below ambient atmospheric pressure and lower than the pressure in the first chamber. providing a food container having a food container wall with a food container wall exterior;
forming a first chamber connected to the food container and containing a humidifying liquid;
a second chamber extending over at least a portion of the outer wall of the food container and in thermal communication with the outer wall of the food container, the second chamber containing a drying gas having a dew point of less than 10°F (-12.22°C) at ambient atmospheric pressure; forming a second chamber containing;
providing a barrier structure sealingly separating the first chamber from the second chamber;
providing a humidifying liquid release mechanism for opening fluid communication between the first chamber and the second chamber in the barrier structure, wherein actuation of the humidifying liquid releasing mechanism causes at least one of the humidifying liquid providing a humidifying fluid release mechanism, wherein a portion of the humidifying fluid is released into the second chamber.

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