ES2589512B1 - Portable refrigerator with attachable refrigerator, no power source or ice. - Google Patents

Abstract

Portable refrigerator with docking refrigerator, without energy source or ice. # Consisting of a housing with lid, an insulating sandwich material, of expanded polystyrene, comprising a removable capsule by means of anchors to the housing, said cryogenic liquid containing capsule being and being made of a metal or metal alloy of good thermo-conductive properties, said capsule containing a recharge valve and an exhaust valve and joining ducts consisting of metal sheets or metal alloy of good thermo-conductive properties, which they connect said capsule with the inside of the housing, transmitting the cold and the capsule can be recharged through the valve.

Description

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DESCRIPTION

PORTABLE FRIDGE WITH COUPLABLE COOLER, WITHOUT SOURCE

OF ENERGY N ICE OBJECT OF THE INVENTION

The present invention relates to a portable refrigerator that cools and keeps refrigerated or frozen food, both solid and liquid inside, without using a source of energy or adding ice, but the refrigeration is carried out through a cryogenic liquid that can be liquid nitrogen or liquid oxygen, which acts as a cooling liquid, although in different embodiments it can be used as liquid or solid C02 cryogenic substance.

The invention object of this specification works by being the capsule containing the cryogenic liquid at a temperature well below zero, for example: the liquid nitrogen at -1960 C and the argon at -185.9 0 C, introducing said capsule into of the cooling device and mitigating the temperature that it emits outwardly through the insulator and transmitted through the ducts of union with the mouth, cooling the container according to the needs of the cooling device, so that it is able to cool, cool or cool. freeze any food or drink.

Advantageously, this novel invention brings to the state of the art a product that cools or keeps cold, chilled or frozen, drinks or food without the need of an external power source such as electricity, ice or snow like the old refrigerators and preserving , at all times, its cooling properties and qualities.

The main novelty of this invention is to cool, refrigerate or freeze drinks or food with the following advantages:

- Great product stability thanks to the duration of cold maintenance.

- It does not need an external power supply (electricity), with the consequent energy saving.

- Economic savings.

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-100% ecological.

- Help to care for the environment.

- Saving drinking water and ice

- Avoid the consumption of plastic bags for ice transport.

The invention is intended for commercial, domestic and industrial use and covers a wide range of products:

- Cooler of both solid products and drinks

- Portable fridge always cold.

- Fixed fridge.

- Fridge freezer.

It has its field of application in the manufacturing and manufacturing industry of refrigeration devices for food and beverages and more particularly in the industry of the manufacture of refrigerators refrigerated by cryogenic liquid without source of electrical energy.

BACKGROUND OF THE INVENTION

Although no identical invention has been found to that described, we present below the documents found that reflect the state of the art related to the proposed invention.

Thus, US Patent 2046953 A (KELLOGG JOHN L) of 07/07/1936, uses a cryogenic gas, not a cryogenic liquid as in the requested one, there being no metal contact between the refrigerant container and the space to be cooled, while in the requested invention the system cools through the metallic junction ducts between the capsule and the inside of the container. In said patent compared to co2 when it passes into a gaseous state, it is conducted through sleeves into the barrels of drinks, mixed with the drinks and what it does is help out the drink under pressure and at the same time cool it. On the other hand, the requested invention has nothing to do with it, since what it does is to cool any food or drink that is stored inside, through the metals that are connected to the cryogenic liquid containing capsule. Also in the comparative patent it is clearly explained that the system is part of the supply

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of carbonated drinks, in which it is used to expel with the help of CO2 in a gaseous state, the output of the cooled beverage, because it is mixed with the beverage. There is a big difference between the two patents, in the requested one only two valves are used, an external housing, insulator and a capsule containing the pressure liquid. The comparative presents instead some conduits for its operation that do not have to do with the union conduits of the requested one and some sleeves to mix the gas with the drink. When in the requested system the liquid only refrigerates, it is not mixed with the drink, nor is it mixed at any time with what is going to cool. It is only injected and returns to the atmosphere in gas, from the same compartment (the capsule).

Document US 2104466 A (MARZOLF GEORGE B) of 04/01/1938, is very different from the requested invention, since this is to cool, keep refrigerated or even freeze, drinks and food, while the one compared instead is used for transport, and to dispense carbonated drinks. There is no other type of beverage to cool because if not, they would be carbonated when mixed with the liquid.

US 1993730 A (CARPENTER WALTER E) of 03/12/1935, is a patent that uses dry ice, not a cryogenic liquid as in the requested invention. In addition, the insulator is totally different, the outer shell being metallic, not like the one that is plastic. In addition, it needs a housing to cover the system along with the barrels, while the requested one cools through thermodynamics, (through the metallic union ducts), and the one compared through insulated compartments and sleeves.

Document ES2 008 998 14 refers to a cryogenic freezer for freezing food products or the like, which comprises: an insulated enclosure having a lower inlet and an upper outlet; conveyor means for moving food products along a path from said entrance to said exit, a greater part of said path being a helical section with a plurality of overlapping floors; means for contacting food products, moving along said path, with liquid cryogen in a lower zone

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generally near said inlet to initially extract a substantial amount of heat from the surface of said food products; means for producing a generally horizontal cryogen vapor circulation in all the upper zones of said helical section, whereby a vertical temperature gradient is created within said enclosure, with relatively warm temperatures existing near said outlet; and means for controlling the steam outlet by said inlet and said outlet so that at least about 80% of the cryogen vapor generated within said enclosure comes out of it by said upper outlet.

Document ES 2 106 976 T3 describes a refrigeration apparatus having at least a first and a second refrigeration compartment, each compartment having its own access door, comprising a first evaporator for said first compartment, said first evaporator working at a first pressure value; a second evaporator for said second compartment, said second evaporator operating at a pressure value greater than said first pressure level; a single capacitor; a single compressor; a refrigerant circuit comprising a series of conduits to provide a refrigerant flow sequentially to said first and second evaporators, said condenser and said compressor; valve means in said refrigerant circuit for directing refrigerant to one selected from said evaporators from said condenser and to prevent a flow of refrigerant to said first evaporator when refrigerant is being directed to said second evaporator in order to cool said second compartment; a check valve in the duct on the suction side of said first evaporator, to prevent the return flow of refrigerant from said second evaporator to said first evaporator; and means in said refrigerant circuit for evacuating refrigerant from said first evaporator after finishing the flow of refrigerant towards said first evaporator in order to ensure that there is sufficient refrigerant charge for the sequential operation of the second evaporator.

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ES 2 289 552 T3 describes a process of cooling a product comprising N adsorption / desorption cycles ordered under vacuum, with N being an integer greater than 1, each cycle comprising the steps consisting of: - extracting heat from a vapor phase refrigerant fluid in a condenser at a first pressure lower than the critical pressure of said fluid to condense said refrigerant fluid, - introducing said liquid phase refrigerant fluid in an evaporator at a second pressure lower than the first pressure to vaporize a part of said refrigerant fluid and cooling the other part of said refrigerant fluid to a vaporization temperature of said refrigerant fluid at said second pressure, said vaporization temperature decreasing from one cycle to the next cycle, said first and second pressures being chosen in each cycle of so that said vaporization temperature in one cycle is increasingly lower than the co temperature ndensation of said refrigerant fluid in the next cycle at the first pressure of said next cycle. - providing heat to the liquid part of said refrigerant fluid at said second pressure in said evaporator to evaporate said refrigerant fluid, - adsorbing said vapor phase refrigerant fluid in at least one adsorption / desorption enclosure attached to said evaporator and containing an adsorbent of zeolite, - after an amount of said refrigerant fluid is adsorbed in said zeolite adsorbent, regenerate said zeolite adsorbent by heating to desorb said amount of refrigerant fluid in vapor phase, - forward said amount of refrigerant fluid in vapor phase towards said condenser, said process further comprising the following steps: effecting N-1 exchanges of heat each time between the refrigerant fluid in the evaporator of one cycle and the refrigerant fluid in the condenser of the following cycle in the order of the cycles to thus perform said heat input in said evaporator and said heat extraction in said condenser, and cooled said product by heat exchange with the cooling fluid at least in the evaporator of the last cycle.

Document ES 2 113 908 T3 refers to a domestic refrigerating apparatus with at least one refrigerating chamber that closes with a

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door, in which refrigerated product containers are provided, a vaporizer and a fan that supplies it with ambient air and that is located in the natural convection current produced by the refrigerating power of the vaporizer, characterized in that the fan necessarily exchanges the air refrigerant both during the refrigeration activity and during the defrosting activity, in which, due to the location and formation of the refrigerated product containers and the fan, the refrigerant air is transported to the sector of the walls of the refrigerator space and along the door covering all the height and width of them.

ES 2 296 668 T3 is an air cooling device, comprising a compressor having an inlet and an outlet, a turbo expander with a turbine wheel with which said compressor is connected to said turbo expander, a first fan mounted on a common shaft with the aforementioned turbo expander, a first dual duct heat exchanger, a cooling chamber with a second fan and an air cooler mounted inside the chamber, a second dual duct heat exchanger, a tank of water connected to a second conduit of the second heat exchanger, and a moisture separator; wherein a first duct of the second double duct heat exchanger, a first duct of the first dual duct heat exchanger, the moisture separator, the turbo expander, the air cooler, and the second duct of the first heat exchanger Double duct, they are connected in series with the compressor inlet.

Document ES 2 188 161 T3 refers to a domestic refrigerator cooled by the Peltier effect, with an enclosure to be cooled formed by one or two thermally insulated enclosures, where the air circulates by natural convection, in which the heat that enters the enclosures is removed by evaporation of a liquid in which at least one enclosure to be cooled is cooled by two units coupled in cascade, each unit comprising two thermosiphons separated by pellets of Peltier effect, one of which is arranged thermosipons of each unit for the

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condensation of a liquid housed inside it on a cold face of the Peltier effect granules and the other thermosiphon of each unit being arranged for the evaporation of a liquid housed inside it on a hot face of the Peltier effect granules, characterized in that each thermosiphon includes a first circuit for the circulation of the evaporated liquid to an area in which the liquid must condense, and a second circuit to return the condensed liquid to an area in which it must evaporate, said second circuit not being the same as the first circuit In one of the units coupled in cascade, the heat removal from the hot faces of the granules is arranged by the elaboration of a fluid, which is caused to condense in an ambient air exchanger arranged in a high position with respect to the granules, the condensed fluid being arranged to return by gravity. Thermosiphons contain water as a coolant with adequate degrees of vacuum, whereby evaporation occurs at the desired temperatures in each thermosiphon.

Conclusions: As can be seen from the investigation carried out, we believe that none of the documents found affect the novelty and inventiveness of the compared invention, since none of these solves the problems posed as the proposed invention does.

DESCRIPTION OF THE INVENTION The portable refrigerator with attachable refrigerator, without energy source or ice object of the present invention is constituted from the following elements:

- A preferably plastic housing,

- An insulating coating, the material used for said expanded polystyrene coating may be.

- A capsule containing said cryogenic liquid made of a metal or alloy of metals with good thermal conductive properties. Said capsule may contain an exhaust valve.

- Some metal sheets or alloys of metals with good thermo-conductive properties, which connect the capsule with the inside of the housing.

- Anchors of the capsule to the refrigerator housing, which make said capsule removable for the recharge of the cryogenic liquid.

- An insulating cover.

- A cryogenic liquid that can be liquid nitrogen or liquid oxygen, which acts as a cooling liquid.

- A valve to recharge the coolant by injection.

- Union ducts, consisting of sheets of thermally conductive material

The invention object of this specification works when the cryogenic liquid containing capsule is at a temperature well below zero, for example: the nitrogen liquefies at -196 0 C and the argon at -185.9 0 C, introducing said capsule inside the cooling device and mitigating the temperature that it emits outwards through the insulator and transmitted through the junction ducts with the mouth, 15 cooling the container according to the needs of the cooling device, so that it can cool , refrigerate or freeze any food or drink. Through the junction ducts, the interior temperature can be adjusted manually, connecting or disconnecting junction points to achieve that temperature.

20 In addition to these previously described elements, a

apparatus to recharge the cold of the cryogenic liquid through valve. Said apparatus for recharging the cold is constituted by a bottle of cryogenic liquid or cryogenic gas and an injection valve. The product is introduced into said apparatus, and it introduces the liquid or gas through a valve. Once the product has been recharged, the housing is closed again and the device is ready to be used again.

Gradually, the container loses its cooling properties and needs to be recharged to recover its cooling functions. For this, the housing of the invention is disassembled through a screw cap, the cryogenic container being exposed for injection of more liquid into the capsule so that said container

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Regain your cooling and cold maintenance functions. In different embodiments, solid co2 can be introduced.

BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of this specification a drawing is attached which by way of non-limiting example describes a preferred embodiment of the invention:

Figure 1: Conventional perspective view of the portable refrigerator with the capsule anchored to the housing.

Figure 2: Conventional perspective view of the portable refrigerator with the capsule removed from the housing.

Figure 3: Section view of the refrigerator

Figure 4: Sectional view of the elevation and side of the carcass

This figure shows the following numbered elements:

1. Portable fridge

2. Housing

3. Union ducts consisting of thermo conductive sheets

4. Insulation material

5. Capsule

6. Cryogenic liquid

7. Insulating cover

8. Refill valve.

9. Exhaust valve

10. Capsule anchor

DESCRIPTION OF A PREFERRED EMBODIMENT A preferred embodiment of the portable refrigerator (1) object of the present invention is constituted from the following elements:

- A housing (2) preferably made of plastic,

- An insulating material (4) in sandwich, said polystyrene material being expanded.

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- A capsule (5) containing said cryogenic liquid made of a metal or alloy of metals with good thermal conductive properties. Said capsule (5) contains a refill valve (8) and an exhaust valve (9), the latter being for relief of cryogenic liquid pressure (6).

- Joint ducts consisting of metal sheets (3) or metal alloys of good thermo-conductive properties, which join the capsule (5) with the inside of the housing (2) thus producing the cold transfer.

- Anchors (10) of the capsule (5) to the housing (2) of the portable refrigerator (1), which make it possible for said capsule (5) to be removable for the recharge of the cryogenic liquid (6).

- An insulating cover (7).

- A cryogenic liquid (6) which can be liquid nitrogen or liquid oxygen, which acts as a cooling liquid.

- A valve to recharge (8) by injection the cooling liquid.

- An exhaust valve (9) for relief.

The invention object of this specification works by being the capsule (5) containing the cryogenic liquid at a temperature well below zero, for example: the nitrogen liquefies at -196 0 C and the argon at -185.9 0 C, said capsule (5) being anchored to the housing (2) and the temperature emitted outwardly mitigated through the insulating material (4) and transmitted through the junction points consisting of thermo-conductive sheets (3), cooling the container in accordance with the needs of the refrigeration device, so that any food or drink can be cooled, refrigerated or frozen.

In addition to these previously described elements, an apparatus is required to recharge the cryogenic liquid through the valve. Said apparatus for recharging the cold is constituted by a gas bottle or cryogenic liquid or others, and an injection valve. The product is introduced into said apparatus, and it introduces the liquid or gas through a

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valve. Once the product has been recharged, the housing is closed again and the device is ready to be used again.

Gradually, the container loses its cooling properties and needs to be recharged to recover its cooling functions. For this, the casing of the invention is disassembled through a screw cap, the cryogenic container being exposed for injection of more liquid into the capsule so that said container returns to its cooling and cold maintenance functions.

In different embodiments, the portable refrigerator object of the present invention may have other forms suitable for other applications, in addition to being able to also use co2.

Claims (2)

ES 2 589 512 A1 1Portable refrigerator with attachable refrigerator, without source of energy or ice, consisting of a casing (2) preferably made of plastic with a lid, an insulating material (4) in sandwich both from the casing and from the lid, said polystyrene material being expanded , characterized by comprising a capsule (5) removable by means of anchors to the housing, said capsule containing cryogenic liquid (6) and being manufactured with a metal or alloy of metals of good thermo-conductive properties, said capsule (5) containing a recharge valve 10 (8) and an exhaust valve (9) and connecting ducts (3) consisting of metal sheets (3) or metal alloys of good thermo-conductive properties, which join said capsule (5) with the inside the housing (2). 2 - Portable refrigerator with docking refrigerator, without energy source 15 or ice, according to claim 1, characterized in that said cryogenic liquid (6) is liquid nitrogen or liquid oxygen, acting as a cryogenic liquid (6) refrigerant. 3.- Portable refrigerator with attachable refrigerator, without energy source or ice, according to claims 1 and 2, characterized by comprising an apparatus for recharging the cryogenic liquid through injection valve from a cryogenic liquid bottle attachable to said capsule by said valve.