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WO2015150603A1 - System for instant cooling in inert atmosphere - Google Patents

System for instant cooling in inert atmosphere Download PDF

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Publication number
WO2015150603A1
WO2015150603A1 PCT/ES2015/070211 ES2015070211W WO2015150603A1 WO 2015150603 A1 WO2015150603 A1 WO 2015150603A1 ES 2015070211 W ES2015070211 W ES 2015070211W WO 2015150603 A1 WO2015150603 A1 WO 2015150603A1
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WO
WIPO (PCT)
Prior art keywords
cooling
cooling chamber
inert gas
air
inert atmosphere
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/ES2015/070211
Other languages
Spanish (es)
French (fr)
Inventor
Carlos ALONSO GONZÁLEZ
Antonio ALONSO GONZÁLEZ
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of WO2015150603A1 publication Critical patent/WO2015150603A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/80—Freezing; Subsequent thawing; Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/28—Quick cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85—Food storage or conservation, e.g. cooling or drying

Definitions

  • the present invention relates to an instantaneous cooling system in an inert atmosphere, intended to accelerate the cooling rate of the products capable of being cooled and obtain the corresponding benefits such as economic savings without having to store the products to be cooled during long periods. periods of time in refrigerators.
  • the invention finds special application in the field of household appliances, as well as commercial refrigeration, hospitality, etc.
  • the cooling system that is recommended has been designed to solve the above-mentioned problems, based on the fact that the cooling chamber itself includes a heat exchanger connected to a cooling circuit, while the chamber is connected to an inert gas tank, establishing a system whose operating principle consists of replacing the air in the interior of the actual cooling chamber with an inert gas, prior to the start of circulation through the heat exchanger of the fluid stored at a very low temperature in the cooling circuit, all with the aim of eliminating the water content existing in the air, giving rise to any cooling power introduced by the cooling circuit to be sensible cooling power, thus transforming the power latent in sensitive and achieving three fundamental objectives:
  • the cooling chamber which is intended to cool the product, it will contain air as normal, so that it is replaced by an inert gas stored in a deposit, prior to the recirculation of a fluid by an air-water heat exchanger, so that that heat exchanger is connected to the cooling circuit with inlet and outlet between both and a recirculation pump in one of the connection branches.
  • the cooling circuit is of low power and contains a fluid stored at very low temperature, this fluid being sent to the exchanger by means of a recirculation pump for the sudden delivery of all the refrigerating power of said fluid of the exchanger to the inert gas previously introduced in the cooling chamber.
  • Such a cooling chamber is connected, through two branches, to the inert gas tank, in one of whose branches there is a solenoid valve for passing or interrupting the inert gas from the tank corresponding to said cooling chamber, while in the other branch there is a vacuum pump to extract air from the cooling chamber, in addition to a couple of check valves and a third valve that allows, according to its cooling sequence, open and close the communication with the camera itself Cooling.
  • the system of the invention comprises a cooling chamber (1) which, as is conventional, will contain air, such a cooling chamber (1) having an inlet in which a valve is provided. solenoid (2).
  • a heat exchanger (3) air-water to which a fan (4) is associated, also located inside the cooling chamber (1), whose function will be set later.
  • the heat exchanger (3) is connected to a cooling circuit (5), with two connecting branches (6 and 7) in the first of which a first valve (8) is provided and in the second a second valve (9) and a circulation pump (10).
  • the cooling chamber (1) is in turn connected through the branches (11 and 12) with an inert gas tank (13), so that in the branch (11) a third valve (14), and in the branch (12) a vacuum pump (15), as well as a couple of check valves (16) and (17) and a fourth valve (18), the branch (12) being furthermore extended to the outside in which a fifth valve (19) is provided.
  • the freon-water refrigeration circuit (5) is of low power and will accumulate in the tank itself part of such circuit (5) a fluid at a very low temperature, so that after introducing the product to be cooled in the cooling chamber (1), the system is put into operation keeping the valves (14) and (18) closed first, the vacuum pump (15) being put into operation and the valve (19) then opened, whereby the The interior of the cooling chamber (1) is removed and the vacuum is thus obtained inside such cooling chamber (1).
  • valve (19) is closed and the vacuum pump (15) stops working, ordering the opening of the valve (14), allowing the inert gas when it reaches the tank (13) to completely flood the cooling chamber ( 1), so that once said cooling chamber (1) is completely flooded by the inert gas coming from the pressure tank (13), the valve (14) will be closed and the valves (8 and 9) will open, setting then running the circulation pump (10) corresponding to the cooling system (5), causing the fluid stored in this recirculates at very low temperature through the air-water heat exchanger (3) located inside the own cooling chamber (1), delivering all the refrigerating capacity accumulated in the fluid of the heat exchanger (3) suddenly, to the inert gas that floods the inside of the cooling chamber (1), at the same time as the fan ( 4) it connects and with it Is increased the thermal exchange between inert gas and the product capable of being cooled inside the cooling chamber (1).
  • the valve (9) will be closed, collecting the circulation pump (10) the fluid and returning it to the cooling circuit tank (5), closing the valve (8) and stopping the fan (4), at the same time that the vacuum pump (15) is connected to the inert gas inside the cooling chamber (1) and once it has reached the vacuum pump (15) by the inert gas coming from the cooling chamber (1), a pressure higher than the storage pressure of the inert gas in the tank (13), opening the valve (18) and allowing the inert gas coming from the cooling chamber (1) is accumulated under pressure in the tank (13), opening the valve (2) vacuum break, once the door of the cooling chamber (1) to pull cooled product opens.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Zoology (AREA)
  • Polymers & Plastics (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention relates to a system consisting of a thermally insulated cooling chamber (1), associated with a low-power cooling circuit (5) with very low temperature fluid accumulation, from which the fluid is sent, by means of a pump (10), to an air-water heat exchanger (3) located inside the cooling chamber (1), which in turn is connected to an inert gas tank (3) which floods the cooling chamber (1) following the extraction of the air from the inside thereof by means of a vacuum pump (15). Said system makes it possible for all the refrigerating power supplied by the cooling circuit (5) to be sensible refrigerating power in order to prevent ice from being formed inside the cooling chamber (1), to increase considerably the cooling power, and to achieve significant energy savings.

Description

SISTEMA PARA ENFRIAMIENTO INSTANTÁNEO EN ATMÓSFERA INERTE  SYSTEM FOR INSTANT COOLING IN INERT ATMOSPHERE

D E S C R I P C I Ó N D E S C R I P C I O N

OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION

La presente invención se refiere a un sistema de enfriamiento instantáneo en atmósfera inerte, previsto para acelerar la velocidad de enfriamiento de los productos susceptibles de ser enfriados y obtener los correspondientes beneficios tales como ahorro económico sin necesidad de tener que almacenar los productos a enfriar durante largos periodos de tiempo en frigoríficos. The present invention relates to an instantaneous cooling system in an inert atmosphere, intended to accelerate the cooling rate of the products capable of being cooled and obtain the corresponding benefits such as economic savings without having to store the products to be cooled during long periods. periods of time in refrigerators.

La invención encuentra especial aplicación en el sector de los electrodomésticos, así como el de la refrigeración comercial, hostelería, etc. The invention finds special application in the field of household appliances, as well as commercial refrigeration, hospitality, etc.

ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION

Actualmente, los productos susceptibles de ser enfriados son almacenados en frigoríficos, botelleros, cámaras frigoríficas, etc durante muy largo periodo de tiempo hasta que alcanza la temperatura óptima para consumo, esto se realiza así por dos motivos principales: Currently, the products that can be cooled are stored in refrigerators, racks, cold rooms, etc. for a very long period of time until they reach the optimum temperature for consumption, this is done for two main reasons:

1.-Al trabajar con circuitos frigoríficos de expansión directa, la entrega de potencia frigorífica instantánea es muy pequeña ya que está limitada por el tamaño del los condensadores estáticos. 1.-When working with direct expansion refrigeration circuits, the delivery of instantaneous refrigerating power is very small since it is limited by the size of the static condensers.

2.-AI portar aire húmedo en su interior no pueden trabajar con temperaturas de evaporación muy bajas, ya que ello originaria la formación súbita de hielo en los evaporadores, actuando dicho hielo como aislante térmico e impidiendo que se pueda realizar el proceso de enfriamiento con rapidez, lo cual conlleva a tener que realizar obligatoriamente continuos deshielos del evaporador con la consiguiente perdida de rendimiento y elevadísimo coste energético. DESCRIPCIÓN DE LA INVENCIÓN 2.-AI carrying humid air in its interior can not work with very low evaporation temperatures, since this originates the sudden formation of ice in the evaporators, this ice acting as a thermal insulator and preventing the cooling process from being carried out with speed, which leads to having to carry out continuous defrosting of the evaporator with the consequent loss of performance and very high energy cost. DESCRIPTION OF THE INVENTION

El sistema para enfriamiento que se preconiza ha sido concebido para resolver la problemática anteriormente expuesta, basándose en que la cámara de enfriamiento propiamente dicha, incluye en su interior un intercambiador de calor conectado a un circuito de enfriamiento, a la vez de que la cámara esta conectada a un depósito de gas inerte, estableciendo un sistema cuyo principio de funcionamiento consiste en sustituir en el interior de la cámara de enfriamiento propiamente dicha el aire existente en la misma por un gas inerte, previamente al inicio de circulación por el intercambiador de calor del fluido almacenado a muy baja temperatura en el circuito de enfriamiento, todo ello con objeto de eliminar el contenido de agua existente en el aire, dando lugar a que toda potencia frigorífica introducida por el circuito de enfriamiento sea potencia frigorífica sensible, transformándose por tanto la potencia latente en sensible y consiguiendo con ello tres objetivos fundamentales: The cooling system that is recommended has been designed to solve the above-mentioned problems, based on the fact that the cooling chamber itself includes a heat exchanger connected to a cooling circuit, while the chamber is connected to an inert gas tank, establishing a system whose operating principle consists of replacing the air in the interior of the actual cooling chamber with an inert gas, prior to the start of circulation through the heat exchanger of the fluid stored at a very low temperature in the cooling circuit, all with the aim of eliminating the water content existing in the air, giving rise to any cooling power introduced by the cooling circuit to be sensible cooling power, thus transforming the power latent in sensitive and achieving three fundamental objectives:

1. La no formación de hielo en el interior de la cámara de refrigeración, a temperaturas muy bajas. 2. Aumento muy importante de la velocidad de enfriamiento. 1. The non-formation of ice inside the cooling chamber, at very low temperatures. 2. Very important increase in cooling speed.

3. Notable ahorro energético, al no utilizar potencia frigorífica latente en la condensación de agua, transformándose esta en potencia frigorífica sensible. Evidentemente, la cámara proporcionará beneficios tanto en el sector doméstico como en el sector comercial, ya que enfriará el producto susceptible de ser enfriado de la temperatura de almacenamiento a la temperatura de consumo de forma casi instantánea, evitando con ello el almacenamiento de productos en frigoríficos domésticos y cámaras frigoríficas comerciales durante largos periodos de tiempo como ocurre tradicionalmente. 3. Notable energy savings, by not using latent cooling power in water condensation, transforming it into sensible cooling capacity. Obviously, the camera will provide benefits both in the domestic sector and in the commercial sector, since it will cool the product susceptible to be cooled from the storage temperature to the consumption temperature almost instantaneously, thus avoiding the storage of products in refrigerators. domestic and commercial cold rooms for long periods of time as is traditionally the case.

En cuanto a la cámara de enfriamiento, en la que se pretende enfriar el producto, contendrá como es normal aire, para que este sea reemplazado por un gas inerte almacenado en un depósito, previamente a la recirculación de un fluido por un intercambiador de calor aire- agua, de manera que ese intercambiador de calor está conectado al circuito de enfriamiento con entrada y salida entre ambos y una bomba de recirculación en uno de los ramales de conexión. As for the cooling chamber, which is intended to cool the product, it will contain air as normal, so that it is replaced by an inert gas stored in a deposit, prior to the recirculation of a fluid by an air-water heat exchanger, so that that heat exchanger is connected to the cooling circuit with inlet and outlet between both and a recirculation pump in one of the connection branches.

Por su parte, el circuito de enfriamiento es de baja potencia y contiene almacenado un fluido a muy baja temperatura, siendo este fluido enviado al intercambiador por medio de una bomba de recirculación para la entrega de forma súbita de toda la potencia frigorífica de dicho fluido del intercambiador al gas inerte previamente introducido en la cámara de enfriamiento. On the other hand, the cooling circuit is of low power and contains a fluid stored at very low temperature, this fluid being sent to the exchanger by means of a recirculation pump for the sudden delivery of all the refrigerating power of said fluid of the exchanger to the inert gas previously introduced in the cooling chamber.

Tal cámara de enfriamiento está conectada, a través de dos ramales, con el depósito de gas inerte, en uno de cuyos ramales hay una electroválvula para dar paso o interrumpir al gas inerte desde el depósito correspondiente a la citada cámara de enfriamiento, mientras que en el otro ramal existe una bomba de vacío para extraer el aire de la cámara de enfriamiento, además de una pareja de válvulas de retención y una tercera válvula que permite, de acuerdo con su secuencia de enfriamiento, abrir y cerrar la comunicación con la propia cámara de enfriamiento. Such a cooling chamber is connected, through two branches, to the inert gas tank, in one of whose branches there is a solenoid valve for passing or interrupting the inert gas from the tank corresponding to said cooling chamber, while in the other branch there is a vacuum pump to extract air from the cooling chamber, in addition to a couple of check valves and a third valve that allows, according to its cooling sequence, open and close the communication with the camera itself Cooling.

En definitiva, se trata de un sistema de enfriamiento instantáneo en atmósfera inerte mediante el que se resuelve los dos problemas referidos en el apartado de antecedentes de la invención, cuya resolución se realiza de la siguiente forma: In short, it is an instantaneous cooling system in an inert atmosphere through which the two problems referred to in the background section of the invention are solved, whose resolution is carried out in the following way:

Utilización de una cámara para enfriamiento instantáneo en atmósfera inerte, trabajando con un circuito frigorífico con enfriamiento freón-agua de baja potencia, con la acumulación de un fluido a muy baja temperatura, y un intercambiador de calor aire-agua de una potencia muy superior a la del circuito frigorífico freón-agua, capaz de entregar de forma instantánea la potencia frigorífica almacenada en el fluido acumulado en tal intercambiador, a muy baja temperatura. b) Se remplaza el aire húmedo contenido en el interior de la cámara de refrigeración, por un gas inerte, de manera que al no contener este moléculas de agua permitirá que la cámara para enfriamiento instantáneo en atmósfera inerte pueda trabajar con temperaturas muy bajas sin que ello de lugar a la formación de hielo, consiguiendo con ello una importante aceleración en el proceso de enfriamiento, ya que con la no presencia de moléculas de agua en el interior de la cámara de enfriamiento se consiga aumentar la potencia frigorífica sensible al coincidir esta con la potencia total, al no utilizarse energía latente en la condensación de las moléculas de agua, y la no formación de hielo que actuaría como aislante térmico consiguiendo con ello no solamente aumentar la velocidad de enfriamiento si no conseguir también un importante ahorro energético. Use of a camera for instantaneous cooling in an inert atmosphere, working with a refrigeration circuit with low-power freon-water cooling, with the accumulation of a fluid at a very low temperature, and an air-water heat exchanger of a power much higher than that of the freon-water refrigeration circuit, capable of instantaneously delivering the refrigerating power stored in the fluid accumulated in such an exchanger, at a very low temperature. b) The humid air contained inside the cooling chamber is replaced by an inert gas, so that since it does not contain this Water will allow the chamber for instantaneous cooling in an inert atmosphere to work at very low temperatures without causing ice formation, thus achieving a significant acceleration in the cooling process, since with the absence of water molecules inside the cooling chamber it is possible to increase the sensible cooling capacity by coinciding with the total power, by not using latent energy in the condensation of the water molecules, and the non-formation of ice that would act as a thermal insulator. This will not only increase the cooling speed but also achieve significant energy savings.

DESCRIPCIÓN DE LOS DIBUJOS DESCRIPTION OF THE DRAWINGS

Para complementar la descripción que seguidamente se va a realizar y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, una hoja única de planos, en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: La figura única mostrada en la hoja de planos corresponde a un sistema de principio de funcionamiento del sistema para enfriamiento instantáneo en atmósfera inerte realizado de acuerdo con el objeto de la Invención. To complement the description that will be made next and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization thereof, an integral sheet of said description is attached as an integral part of said description. drawings, in which the following has been represented with an illustrative and non-restrictive character: The single figure shown in the sheet of plans corresponds to a system operating principle system for instantaneous cooling in an inert atmosphere carried out in accordance with the object of the Invention.

REALIZACIÓN PREFERENTE DE LA INVENCIÓN PREFERRED EMBODIMENT OF THE INVENTION

Como se puede ver en las figuras referidas, el sistema de la invención comprende una cámara de enfriamiento (1 ) que como es convencional contendrá aire, estando tal cámara de enfriamiento (1 ) dotada con una entrada en la que se ha previsto una válvula de solenoide (2). As can be seen in the figures referred to, the system of the invention comprises a cooling chamber (1) which, as is conventional, will contain air, such a cooling chamber (1) having an inlet in which a valve is provided. solenoid (2).

En el interior de tal cámara de enfriamiento (1) se ha previsto un intercambiador de calor (3) aire-agua al que está asociado un ventilador (4) situado también en el interior de la propia cámara de enfriamiento (1), cuya función se pondrá con posterioridad. Inside the cooling chamber (1) there is a heat exchanger (3) air-water to which a fan (4) is associated, also located inside the cooling chamber (1), whose function will be set later.

El intercambiador de calor (3) está conectado a un circuito de enfriamiento (5), con dos ramales de conexión (6 y 7) en el primero de los cuales se ha previsto una primera válvula (8) y en el segundo una segunda válvula (9) y una bomba de circulación (10). The heat exchanger (3) is connected to a cooling circuit (5), with two connecting branches (6 and 7) in the first of which a first valve (8) is provided and in the second a second valve (9) and a circulation pump (10).

Por su parte, la cámara de enfriamiento (1) está a su vez conectada a través de los ramales (11 y 12) con un depósito de gas inerte (13) , de manera que en el ramal (11) se ha previsto una tercera válvula (14), y en el ramal (12) una bomba (15) de vacío, así como una pareja de válvulas de retención (16) y (17) y una cuarta válvula (18), estando además el ramal (12) prolongado hacia el exterior en el que se ha previsto una quinta válvula (19). For its part, the cooling chamber (1) is in turn connected through the branches (11 and 12) with an inert gas tank (13), so that in the branch (11) a third valve (14), and in the branch (12) a vacuum pump (15), as well as a couple of check valves (16) and (17) and a fourth valve (18), the branch (12) being furthermore extended to the outside in which a fifth valve (19) is provided.

De acuerdo con estas características, el funcionamiento es como sigue: According to these characteristics, the operation is as follows:

El circuito frigorífico freón-agua (5) es de baja potencia y acumulará en el propio depósito que forma parte de tal circuito (5) un fluido a muy baja temperatura, de manera tal que tras introducir el producto a enfriar en la cámara de enfriamiento (1), se pone el sistema en funcionamiento manteniéndose en primer lugar cerradas las válvulas (14) y (18), poniéndose en funcionamiento la bomba de vacío (15) y abriéndose seguidamente la válvula (19), con lo que el aire del interior de la cámara de enfriamiento (1) es extraído y se consigue de esta manera el vacío en el interior de tal cámara de enfriamiento (1). A continuación se cierra la válvula (19) y deja de funcionar la bomba de vacío (15), ordenándose la apertura de la válvula (14), permitiendo al gas inerte cuando llega al depósito (13) inundar por completo la cámara de enfriamiento (1), de manera que una vez está completamente inundada dicha cámara de enfriamiento (1) por el gas inerte procedente del depósito a presión (13), se cerrará la válvula (14) y se abrirán las válvulas (8 y 9), poniéndose a continuación en marcha la bomba de circulación (10) correspondiente al sistema de enfriamiento (5), haciendo que el fluido almacenado en este recircule a muy baja temperatura a través del intercambiador de calor (3) aire-agua situado en el interior de la propia cámara de enfriamiento (1), entregando toda la potencia frigorífica acumulada en el fluido del intercambiador térmico (3) de forma súbita, al gas inerte que inunda el interior de la cámara de enfriamiento (1),a la vez que el ventilador (4) se conecta y con ello se aumenta el intercambio térmico entre gas inerte y el producto susceptible de ser enfriado en el interior del cámara de enfriamiento (1 ). The freon-water refrigeration circuit (5) is of low power and will accumulate in the tank itself part of such circuit (5) a fluid at a very low temperature, so that after introducing the product to be cooled in the cooling chamber (1), the system is put into operation keeping the valves (14) and (18) closed first, the vacuum pump (15) being put into operation and the valve (19) then opened, whereby the The interior of the cooling chamber (1) is removed and the vacuum is thus obtained inside such cooling chamber (1). Then the valve (19) is closed and the vacuum pump (15) stops working, ordering the opening of the valve (14), allowing the inert gas when it reaches the tank (13) to completely flood the cooling chamber ( 1), so that once said cooling chamber (1) is completely flooded by the inert gas coming from the pressure tank (13), the valve (14) will be closed and the valves (8 and 9) will open, setting then running the circulation pump (10) corresponding to the cooling system (5), causing the fluid stored in this recirculates at very low temperature through the air-water heat exchanger (3) located inside the own cooling chamber (1), delivering all the refrigerating capacity accumulated in the fluid of the heat exchanger (3) suddenly, to the inert gas that floods the inside of the cooling chamber (1), at the same time as the fan ( 4) it connects and with it Is increased the thermal exchange between inert gas and the product capable of being cooled inside the cooling chamber (1).

Una vez que el producto ha alcanzado la temperatura deseada, se cerrará la válvula (9), recogiendo la bomba de circulación (10) el fluido y devolviéndolo al depósito del circuito de enfriamiento (5), cerrándose la válvula (8) y deteniéndose el ventilador (4), a la vez de que se conecta la bomba de vacío (15) comenzado a aspirar el gas inerte del interior de la cámara de enfriamiento (1 ) y una vez alcanzada en la impulsión de al bomba de vacío (15) por el gas inerte proveniente de la cámara de enfriamiento (1 ), una presión superior a la presión de almacenamiento del gas inerte en el depósito (13), abriéndose la válvula (18) y permitiendo que el gas inerte proveniente de la cámara de enfriamiento (1) se acumule a presión en el depósito (13), abriéndose la válvula (2) de rotura de vacío, una vez que se abra la puerta de la cámara de enfriamiento (1 )para tirar producto enfriado. Once the product has reached the desired temperature, the valve (9) will be closed, collecting the circulation pump (10) the fluid and returning it to the cooling circuit tank (5), closing the valve (8) and stopping the fan (4), at the same time that the vacuum pump (15) is connected to the inert gas inside the cooling chamber (1) and once it has reached the vacuum pump (15) by the inert gas coming from the cooling chamber (1), a pressure higher than the storage pressure of the inert gas in the tank (13), opening the valve (18) and allowing the inert gas coming from the cooling chamber (1) is accumulated under pressure in the tank (13), opening the valve (2) vacuum break, once the door of the cooling chamber (1) to pull cooled product opens.

Claims

R E I V I N D I C A C I O N E S R E I V I N D I C A C I O N S 1 a.- Sistema para enfriamiento instantáneo en atmósfera inerte, que comprendiendo una cámara de enfriamiento (1 ) en la que se pretende enfriar el producto, se caracteriza porque tal cámara de enfriamiento (1 ) está conectada a un depósito de gas inerte (13) destinado a inundar el interior de la cámara de enfriamiento (1 ) tras la extracción del aire contenido en la misma por medio de una bomba de vacío (15), con la particularidad de que en el interior de dicha cámara de enfriamiento (1 ) se ha previsto un intercambiador de calor (3) aire-agua conectado a un circuito de enfriamiento (5), con una bomba de circulación (1 0) mediante la que se impulsa el fluido enfriado en el circuito de enfriamiento (5) al intercambiador de calor (3), de manera que dicho fluido enfriado transmita toda la potencia frigorífica acumulada al gas inerte que inunda la cámara de enfriamiento (1 ). 1 .- system for instant cooling in inert atmosphere, comprising a cooling chamber (1) in which it is intended to cool the product, characterized in that such cooling chamber (1) is connected to an inert gas tank (13 ) intended to flood the interior of the cooling chamber (1) after the extraction of the air contained therein by means of a vacuum pump (15), with the particularity that inside said cooling chamber (1) there is provided an air-water heat exchanger (3) connected to a cooling circuit (5), with a circulation pump (10) through which the cooled fluid in the cooling circuit (5) is driven to the exchanger of heat (3), so that said cooled fluid transmits all the accumulated refrigerating power to the inert gas that floods the cooling chamber (1). 2a.- Sistema para enfriamiento instantáneo en atmósfera inerte, según reivindicación 1 a, caracterizado porque se establecen dos ramales (6) y (7) entre el depósito del circuito frigorífico (5) y el propio intercambiador de calor (3), en los que se han previsto sendas válvulas (8) y (9), respectivamente, así como una bomba de circulación (1 0) en el ramal (7). 2 .- system for instant cooling in inert atmosphere, according to claim 1, characterized in that two strands (6) and (7) between the reservoir of the refrigerant circuit (5) and the exchanger itself heat (3), as in those which are provided with valves (8) and (9), respectively, as well as a circulation pump (10) in the branch (7). 3a.- Sistema para enfriamiento instantáneo en atmósfera inerte, según reivindicación 1 a, caracterizado porque se establecen dos ramales (1 1 ) y (1 2) entre el depósito de gas inerte (13) y la cámara de enfriamiento (1 ), contando con válvulas (14, 1 6, 17 y 1 8), así como una bomba de vacío (1 5) de extracción del aire contenido en la cámara de refrigeración (1 ) para permitir la entrada, a través de la válvula (14), del gas inerte procedente del depósito (1 3) a la propia cámara de enfriamiento (1 ). 3 .- system for instant cooling in inert atmosphere, according to claim 1, characterized in that two branches (1 1) and (1 2) between the inert gas tank (13) and the cooling chamber (1) are set, having valves (14, 1 6, 17 and 1 8), as well as a vacuum pump (1 5) for extracting the air contained in the cooling chamber (1) to allow entry, through the valve (14). ), from the inert gas from the tank (1 3) to the cooling chamber (1).
PCT/ES2015/070211 2014-04-03 2015-03-24 System for instant cooling in inert atmosphere Ceased WO2015150603A1 (en)

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ES201430492A ES2458440B1 (en) 2014-04-03 2014-04-03 System for instant cooling in inert atmosphere

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860222A (en) * 1973-11-02 1975-01-14 Wall Colmonoy Corp Cooling system for vacuum furnaces
US4138854A (en) * 1974-12-09 1979-02-13 Edinburg State Bank Freezing apparatus and method
JPH02223783A (en) * 1989-02-27 1990-09-06 Mitsubishi Electric Corp Refrigeration equipment
US5187947A (en) * 1991-10-16 1993-02-23 Doskocil Companies Incorporated Wheel type freezer and method for rapid, low temperature freezing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860222A (en) * 1973-11-02 1975-01-14 Wall Colmonoy Corp Cooling system for vacuum furnaces
US4138854A (en) * 1974-12-09 1979-02-13 Edinburg State Bank Freezing apparatus and method
JPH02223783A (en) * 1989-02-27 1990-09-06 Mitsubishi Electric Corp Refrigeration equipment
US5187947A (en) * 1991-10-16 1993-02-23 Doskocil Companies Incorporated Wheel type freezer and method for rapid, low temperature freezing

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ES2458440B1 (en) 2014-11-21

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