WO2004042134A1 - Washing method and apparatus using carbon dioxide - Google Patents

Washing method and apparatus using carbon dioxide Download PDF

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Publication number
WO2004042134A1
WO2004042134A1 PCT/MX2003/000066 MX0300066W WO2004042134A1 WO 2004042134 A1 WO2004042134 A1 WO 2004042134A1 MX 0300066 W MX0300066 W MX 0300066W WO 2004042134 A1 WO2004042134 A1 WO 2004042134A1
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WO
WIPO (PCT)
Prior art keywords
washing fluid
washing
fluid
compartment
storage tank
Prior art date
Application number
PCT/MX2003/000066
Other languages
Spanish (es)
French (fr)
Inventor
Asdrúbal FLORES PEREDO
Original Assignee
Flores Peredo Asdrubal
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Flores Peredo Asdrubal filed Critical Flores Peredo Asdrubal
Priority to AU2003261013A priority Critical patent/AU2003261013A1/en
Publication of WO2004042134A1 publication Critical patent/WO2004042134A1/en

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/08—Associated apparatus for handling and recovering the solvents
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/007—Dry cleaning methods
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/02—Dry-cleaning apparatus or methods using volatile solvents having one rotary cleaning receptacle only

Definitions

  • the present invention relates to the technique of washing clothes without using water as the main component of the washing fluid (dry cleaning).
  • dry cleaning different solvents such as perchlorethylene have been used, which have several problems such as toxicity and environmental damage.
  • U.S. Patent 6,314,601 of McClain describes a method of controlling the temperature of the washing fluid.
  • the U.S. Patent System 6,314,601 uses a "mass storage tank” and does not mention or claim a control of the ratio of saturated steam / total mixing of the washing fluid, necessary to eliminate the use of the mass storage tank.
  • US Patent 5,970,554 of Shore describes a method of recovering carbon dioxide.
  • a control system for the saturated steam / total mixing ratio of the washing fluid is not mentioned or claimed in US Patent 5,970,554. i
  • there is no carbon dioxide washing system that has a control of the saturated steam / total mixing ratio of the washing fluid that allows only one storage tank to be used.
  • the present invention includes a washing method and apparatus using carbon dioxide as described and claimed below.
  • the present invention has a storage tank, a washing compartment, washing fluid filtering means, washing fluid throttling means, washing fluid evaporation means, a distillation column, compression fluid media. washing, a pump and condensation means of the washing fluid.
  • the system has an automatic electronic control that activates the different elements of the system including valves, compression means and pumps to perform different operations.
  • the washing method includes the following steps:
  • the washing compartment must be pressurized in order to contain carbon dioxide in a liquid state. This step is carried out by removing the air that is inside the washing compartment and allowing the passage of high pressure saturated steam from the storage tank to the washing compartment. - Partial filling of the washing compartment with washing fluid in a liquid state. This step is performed by transferring washing fluid from the storage tank to the washing compartment.
  • This step is achieved by stirring the items to be washed inside the washing compartment and circulating the washing fluid in a liquid state that is in the washing compartment.
  • the washing fluid in this system has two functions: that of cleaning the items to be washed so that it is convenient that a part of the fluid is in a liquid state and that of pressurizing the washing compartment so that it is necessary that a part of the washing fluid is in a vapor state.
  • the washing fluid is extracted from the storage tank so it is necessary to control the ratio of saturated steam / total mixture of the fluid inside the storage tank in order to have enough steam for pressurizing of the storage compartment. washed.
  • the pressure of the washing fluid must be controlled so that it is sufficient to pressurize the washing compartment, but does not exceed the design pressure of the system.
  • An automatic control monitors the pressure and level in the storage tank and compare them with a set point for correction.
  • the automatic control handles the different elements of the system based on the difference in the readings with the set point to decrease or increase the level of liquid carbon dioxide inside the storage tank and to increase or decrease the pressure inside the storage tank.
  • One more aspect of the quality of the washing fluid is its cleaning. Because the washing fluid is reused, it must be cleaned not only of the insoluble dirt particles in the fluid that are separated with filtering media but also must be cleaned of the soluble substances in it, so that the fluid Washing must be distilled. Maintenance processes For the correct operation of the system it is necessary that several maintenance processes be carried out, including the change of filters, the cleaning of the container of wastes soluble in washing fluid and the recharge of the washing fluid.
  • washing fluid can be achieved by changing the storage tank or filling it with liquid washing fluid from another tank or container that is preferably connected momentarily to said storage tank. Washing fluid can be transferred from one tank to another with an external pump or with a system pump.
  • Another object of the invention is to provide a method for cleaning the washing fluid of an apparatus operating with carbon dioxide. The method of cleaning the washing fluid includes the steps of:
  • the washing fluid is passed through a throttling means in which the pressure and the temperature of the fluid decrease.
  • washing fluid is passed through an evaporation medium.
  • filtering media that allow the separation of non-soluble particles in the washing fluid can be used.
  • the washing fluid to be distilled can come from the lower part of the storage tank or from the lower part of the washing compartment whereby the process can be carried out before, during or after the washing of articles.
  • the distilled washing fluid After distillation the distilled washing fluid is in a gaseous state and the system may require that the saturated steam / total mixture of the washing fluid ratio be reduced by which after distillation the distilled fluid may be partially or totally condensed.
  • Another object of the invention is to provide an apparatus for cleaning a washing fluid based on carbon dioxide used in the dry cleaning of articles.
  • the apparatus includes: a storage tank for storing the washing fluid, a means for throttling the washing fluid in which the pressure of the washing fluid decreases, a means for evaporating the washing fluid, a compression means for transporting me compress the washing fluid, a means of condensing the washing fluid, Washing fluid filtering means for separating insoluble particles from the washing fluid, a distillation column and a container in which the undesirable substances soluble in the washing fluid are stored.
  • Another object of the invention is to provide a method and apparatus for increasing the saturated steam / total mixing ratio of the washing fluid.
  • the method of increasing the saturated steam / total mixing ratio of the washing fluid includes the steps of:
  • the washing fluid is passed through a throttling means in which the pressure and the temperature of the fluid decrease.
  • washing fluid is passed through an evaporation medium.
  • washing fluid evaporates in this process, it is convenient that it passes through a distillation column to separate it from the undesirable substances soluble therein; It is also possible to filter the washing fluid to separate the fluid from soluble particles therein.
  • filter the washing fluid In order to have control over the ratio of saturated steam / total mixing of the washing fluid that returns to the storage tank, it is possible to optionally partially condense the washing fluid by passing it through one or more condensers such that only fluid in the state does not return gas, but return one part in a gaseous state and another in a liquid state.
  • the washing fluid to which the saturated steam / total fluid mixture ratio will be increased can come from the bottom of the storage tank or from the bottom of the Washing compartment with which the process can be carried out before, during or after washing items.
  • Heating means of the washing fluid can be used alternatively or together.
  • the heating means can be found inside the storage tank, inside the washing compartment or both. These same heating means can evaporate the washing fluid in a liquid state and increase the fluid pressure.
  • the saturated steam / total mixture of the wash fluid ratio In some circumstances it may be necessary to decrease the saturated steam / total mixture of the wash fluid ratio. In these cases, part of the saturated vapor of the apparatus is condensed.
  • the saturated steam that condenses can come from the storage tank, the washing compartment and the distillation column.
  • the washing fluid that returns to the washing compartment will be at a lower temperature than the storage tank fluid, which will reduce the pressure of the storage tank.
  • Figl is a schematic diagram of a system in which the essential elements of the invention are shown.
  • Fig2 is a schematic diagram of a system in which the essential elements of the invention are shown with additional filtering means arranged between the throttling means and the storage tank, heating means of the storage tank, heating means of the washing compartment, additional condensation media, an additional pump and additional valves.
  • FIG. 22 A system that can carry out the present invention is schematically shown in FIG.
  • the valve 22 is a safety valve that opens mechanically in case of exceeding the design pressure of the system and the valve 23 is a valve that can be, optionally, of manual or automatic type and is open at all times except when it is desired to clean the insoluble waste receiving container 5.
  • the remaining valves as well as the other elements of the apparatus are operated by an automatic electronic control.
  • the electronic control used is not decisive for the operation of the invention, a variety of automatic controls can be used such as: a programmable logic control or integrated circuit among others.
  • the washing compartment 1 is pressurized. This step begins with the absorption of the air inside the washing compartment 1. achieved by actuating the compression means 3 after opening the valves 17, 18 and 19; Line 31 is open to the atmosphere and, for security reasons, it must flow out of the building where the device is located. At the end of the absorption said valves are closed and the valves 20 and 11 are opened allowing the flow of the washing fluid in the gaseous state from the storage tank 2 to the washing compartment 1, these valves will remain open up to the ventilation of the washing compartment 1.
  • the storage tank 2 will contain the washing fluid in two phases, both in the saturated liquid phase and in the saturated steam phase, it will be connected to the lines 24 at the top of it and to the line 28 at the bottom in order to have access to the washing fluid in both states.
  • Partial filling of the washing compartment 1 with washing fluid in the liquid state will be carried out by turning on the pump 8 after opening the valves 12 and 13. Once the necessary saturated liquid has been transferred, the valve 12 is closed and opened the valve 14 circulating, with the aid of the pump 8, the washing fluid through lines 27, 29 and 30 passing through the filter 9, where the insoluble particles are separated from the washing fluid, until they reach the compartment again Washing items 1 at the same time will shake the items inside the wash compartment. Stirring is intended to remove dirt from items.
  • the agitation can be carried out in different ways in this type of systems, sonic agitation, a motor or a turbine can be used to move a basket inside the washing compartment as already described in the patented and open literature. The duration of this stage is variable.
  • the extraction of the washing fluid from the washing compartment has two stages: the first, the draining of the fluid in a liquid state that is carried out by closing the valve 13 and opening the valve 15, with the pump 8 still on; Valves 14 and 15 close after the pump is turned off.
  • the second stage is the extraction of the washing fluid in the gaseous state, which is carried out by closing the valve 20 and turning on the compression means 3 after opening the valves 17 and 21.
  • the compression means 3 is turned off, the valves 17 and 21 are closed and opened by seconds the valve 19 to allow the steam of the washing fluid to escape into the atmosphere that could remain inside the washing compartment 1; valve 11 is finally closed.
  • the user can proceed to open the door of the washing compartment 1 and take out the washed items.
  • the fluid quality correction process of the storage tank 2 can be carried out during the washing of articles or at times when articles are not being washed, it is not necessary that the door of the washing compartment 1 be closed. It is carried carried out by opening the valves 16 and 21 and turning on the compression means 3, circulating the fluid in a liquid state through a throttling means 6 to the step from which the pressure and the temperature of the washing fluid decreases, then passes through a medium evaporation 7 in which most of the washing fluid changes from a liquid to a gaseous state and the undesirable substances from the soluble dirt of the washed articles remain in a liquid state, the fluids pass to the distillation column 4 in which the undesirable substances are separated and fall by gravity to the container 5, in the distillation column 4 the fraction of the washing fluid that still remains is evaporated It was in a liquid state and after passing through the compression means 3 it passes through a condensation means 10 in which the fluid loses part of the enthalpy gained in the compression and returns to the distilled storage tank 2 and with a saturated steam /
  • a filtration means 35 between the storage tank 2 and the throttling means 6 to prevent particles in the washing fluid from congesting the throttling medium 6.
  • the duration of this stage is variable and depends on the conditions of the fluid in the storage tank 2. At the end of this stage they close the valves 16 and 21 and the compression means 3 is turned off. It is possible to add to the system one or more additional condensation means 41 and 42 arranged as shown in fig. 2 in order to reduce the ratio of saturated steam / total mixing of the washing fluid returning to the storage tank 2.
  • the circulation of the fluid through the condensation means 10, 41 and 42 and to the storage tank 2 is restricted by the valves 43 , 44, 45, 46, 47 and 48 and is controlled according to the conditions of the fluid in the storage tank 2.
  • the system may require heating of the washing fluid in which case the heating means 36 and 37 are activated when the appliance is washing items or only the heating means 36 when the appliance is not washing items.
  • the storage tank is recharged by connecting a tank with washing fluid, preferably momentarily to the storage tank 2 via line 40.
  • Valve 39 is opened and pump 38 is operated until sufficient fluid has been transferred after washing, pump 38 is turned off and valve 39 is closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The invention relates to a washing method and apparatus using carbon dioxide, comprising a storage tank, a washing compartment, washing fluid filtering means, washing fluid choking means, washing fluid evaporation means, a distillation column, washing fluid compression means, a pump and washing fluid condensation means. The washing method comprises several stages. One of said stages is the correction of the quality of the washing fluid, wherein distillation is carried out and the saturated vapor/total mixture ratio of the washing fluid is increased or lowered. If it is necessary to increase the saturated vapor/total mixture ratio of the washing fluid, the fluid in liquid state is passed through choking means. As the washing fluid passes through said choking means, the pressure and temperature of the washing fluid drop. The washing fluid is then passed through evaporation means, wherein most of the washing fluid changes into gaseous state. In a third stage, the fluid passes through a distillation column in which the fraction of the washing fluid that was still in liquid state is evaporated. The fluid is then passed through condensation means, wherein part of the washing fluid changes into liquid state and is finally moved into a distilled fluid storage tank, the washing fluid having then a higher saturated vapor/total mixture ratio. If it is necessary to lower the saturated vapor/total mixture ratio of the washing fluid, part of the saturated vapor of the system is condensed. The system has an automatic electronic control that actuates the different elements of the system in order to carry out different operations.

Description

MÉTODO Y APARATO DE LAVADO UTILIZANDO DIÓXIDO DE CARBONOWASHING METHOD AND APPLIANCE USING CARBON DIOXIDE
DESCRIPCIÓN DEL ARTE PREVIO.DESCRIPTION OF THE PRIOR ART.
La presente invención se refiere a la técnica del lavado de ropa sin utilizar agua como componente principal del fluido de lavado (lavado en seco). En el lavado en seco se han utilizado distintos solventes como el percloretileno que tienen varios problemas como su toxicidad y daños ambientales.The present invention relates to the technique of washing clothes without using water as the main component of the washing fluid (dry cleaning). In dry cleaning, different solvents such as perchlorethylene have been used, which have several problems such as toxicity and environmental damage.
Aparatos para el lavado en seco utilizando dióxido de carbono como medio de lavado han sido sugeridos en patentes como U.S. 5,881,577 de Sauer y U.S. 5,943,721 de Lerette, estos aparatos tienen el problema de requerir de un "tanque de almacenaje masivo", para almacenar la mayor parte del fluido de lavado, en adición a un "tanque de almacenamiento central" en el caso de la patente U.S. 5,881,577 y dos tanques de almacenaje en el caso de la patente U.S. 5,943,721 que tiene funciones como la de almacenar el dióxido de carbono reciclado. La utilización de un tanque de almacenaje masivo y de un "tanque de almacenamiento central" aumenta considerablemente las dimensiones del aparato y limita su comercialización.Dry cleaning devices using carbon dioxide as a washing medium have been suggested in patents such as U.S. 5,881,577 to Sauer and U.S. 5,943,721 of Lerette, these devices have the problem of requiring a "mass storage tank", to store most of the washing fluid, in addition to a "central storage tank" in the case of U.S. Pat. 5,881,577 and two storage tanks in the case of U.S. Pat. 5,943,721 which has functions such as storing recycled carbon dioxide. The use of a mass storage tank and a "central storage tank" considerably increases the dimensions of the apparatus and limits its commercialization.
La patente U.S. 6,314,601 de McClain, describe un método de control de la temperatura del fluido de lavado. El sistema de la patente U.S. 6,314,601 utiliza un "tanque de almacenaje masivo" y no menciona ni reivindica un control de la relación vapor saturado/mezcla total del fluido de lavado, necesario para eliminar el uso del tanque masivo de almacenaje.U.S. Patent 6,314,601 of McClain, describes a method of controlling the temperature of the washing fluid. The U.S. Patent System 6,314,601 uses a "mass storage tank" and does not mention or claim a control of the ratio of saturated steam / total mixing of the washing fluid, necessary to eliminate the use of the mass storage tank.
La patente U.S. 5,970,554 de Shore, describe un método de recuperación de dióxido de carbono. Un sistema de control de la relación vapor saturado/mezcla total del fluido de lavado no se menciona ni reivindica en la patente U.S. 5,970,554. i En la técnica actual no existe un sistema de lavado con dióxido de carbono que cuente con un control de la relación vapor saturado/mezcla total del fluido de lavado que permita utilizar solo un tanque de almacenaje.US Patent 5,970,554 of Shore describes a method of recovering carbon dioxide. A control system for the saturated steam / total mixing ratio of the washing fluid is not mentioned or claimed in US Patent 5,970,554. i In the current technique there is no carbon dioxide washing system that has a control of the saturated steam / total mixing ratio of the washing fluid that allows only one storage tank to be used.
DESCRIPCIÓN DE LA INVENCIÓN.DESCRIPTION OF THE INVENTION
La presente invención incluye un método y aparato de lavado utilizando dióxido de carbono tal y como a continuación se describe y reivindica.The present invention includes a washing method and apparatus using carbon dioxide as described and claimed below.
La presente invención cuenta con un tanque de almacenamiento, un compartimento de lavado, medios de filtrado del fluido de lavado, medios de estrangulamiento del fluido de lavado, medios de evaporación del fluido de lavado, una columna de destilación, medios de compresión del fluido de lavado, una bomba y medios de condensación del fluido de lavado. El sistema cuenta con un control electrónico automático que acciona los diferentes elementos del sistema incluyendo válvulas, medios de compresión y bombas para realizar distintas operaciones.The present invention has a storage tank, a washing compartment, washing fluid filtering means, washing fluid throttling means, washing fluid evaporation means, a distillation column, compression fluid media. washing, a pump and condensation means of the washing fluid. The system has an automatic electronic control that activates the different elements of the system including valves, compression means and pumps to perform different operations.
El método de lavado incluye los siguientes pasos:The washing method includes the following steps:
- Cargado del compartimento de lavado con artículos a ser lavados.- Loaded of the washing compartment with items to be washed.
- Presurizado del compartimento de lavado. El compartimento de lavado deberá de ser presurizado a fin de poder contener dióxido de carbono en estado líquido. Este paso se realiza sacando el aire que se encuentra dentro del compartimento de lavado y permitiendo el paso de vapor saturado a alta presión del tanque de almacenaje al compartimento de lavado. - Llenado parcial del compartimento de lavado con fluido de lavado en estado líquido. Este paso se realiza transfiriendo fluido de lavado del tanque de almacenaje al compartimento de lavado.- Pressurized washing compartment. The washing compartment must be pressurized in order to contain carbon dioxide in a liquid state. This step is carried out by removing the air that is inside the washing compartment and allowing the passage of high pressure saturated steam from the storage tank to the washing compartment. - Partial filling of the washing compartment with washing fluid in a liquid state. This step is performed by transferring washing fluid from the storage tank to the washing compartment.
- Lavado de los artículos en el compartimento de lavado. Este paso se logra agitando los artículos a ser lavados dentro del compartimento de lavado y circulando el fluido de lavado en estado líquido que se encuentra en el compartimento de lavado.- Washing of the items in the washing compartment. This step is achieved by stirring the items to be washed inside the washing compartment and circulating the washing fluid in a liquid state that is in the washing compartment.
- Drenado del fluido de lavado del compartimento de lavado. El líquido saturado dentro del compartimento de lavado debe de ser drenado, y el vapor saturado debe de ser succionado, finalmente se debe de ventilar el compartimento de lavado. El fluido de lavado debe de ser regresado al tanque de almacenaje para su posterior reutilización.- Draining the washing fluid from the washing compartment. The saturated liquid inside the wash compartment must be drained, and the saturated steam must be sucked, finally the wash compartment must be ventilated. The washing fluid must be returned to the storage tank for later reuse.
- Corrección de la calidad del fluido del tanque de almacenaje. El fluido de lavado en este sistema tiene dos funciones: la de limpiar los artículos a ser lavados por lo que es conveniente que una parte del fluido se encuentre en estado líquido y la de presurizar el compartimento de lavado por lo que es necesario que una parte del fluido de lavado se encuentre en estado de vapor. En este sistema el fluido de lavado se extrae del tanque de almacenaje por lo que es necesario controlar la relación vapor saturado/mezcla total del fluido que se encuentra dentro del tanque de almacenaje a fin de contar con el suficiente vapor para el presurizado del compartimento de lavado. Así mismo se debe de controlar la presión del fluido de lavado a fin de que esta sea suficiente para presurizar el compartimento de lavado, pero que no exceda la presión de diseño del sistema. Un control automático monitoréa la presión y el nivel en el tanque de almacenaje y los compara con un punto establecido para su corrección. El control automático maneja los diferentes elementos del sistema para en base a la diferencia de las lecturas con el punto establecido disminuir o aumentar el nivel del dióxido de carbono líquido dentro del tanque de almacenaje y para aumentar o disminuir la presión dentro del tanque de almacenaje. Un aspecto más de la calidad del fluido de lavado es la limpieza del mismo. Debido a que el fluido de lavado es reutilizado este debe de ser limpiado no solo de las partículas de suciedad insolubles en el fluido que son separadas con medios de filtrado sino también debe de ser limpiado de las sustancias solubles en el mismo por lo que el fluido de lavado debe de ser destilado. Procesos de mantenimiento. Para el correcto funcionamiento del sistema es necesario que se realicen varios procesos de mantenimiento, que incluyen el cambio de filtros, el limpiado del recipiente contenedor de desechos solubles en fluido de lavado y la recarga del fluido de lavado. Debido a que este es un sistema abierto a la atmósfera para sacar y meter los artículos a ser lavados en el compartimento de lavado, la pérdida de fluido de lavado es inevitable por lo que debe de ser repuesto periódicamente. El recargado del fluido de lavado se puede lograr cambiando el tanque de almacenaje o rellenándolo con fluido de lavado líquido proveniente de otro tanque o recipiente que se conecta, de preferencia momentáneamente, a dicho tanque de almacenaje. El fluido de lavado se puede transferir de una tanque a otro con una bomba externa o con una bomba del sistema. Otro objetivo de la invención es el de proveer un método para limpiar el fluido de lavado de un aparato que funciona con dióxido de carbono. El método de limpieza del fluido de lavado incluye los pasos de:- Correction of the fluid quality of the storage tank. The washing fluid in this system has two functions: that of cleaning the items to be washed so that it is convenient that a part of the fluid is in a liquid state and that of pressurizing the washing compartment so that it is necessary that a part of the washing fluid is in a vapor state. In this system the washing fluid is extracted from the storage tank so it is necessary to control the ratio of saturated steam / total mixture of the fluid inside the storage tank in order to have enough steam for pressurizing of the storage compartment. washed. Likewise, the pressure of the washing fluid must be controlled so that it is sufficient to pressurize the washing compartment, but does not exceed the design pressure of the system. An automatic control monitors the pressure and level in the storage tank and compare them with a set point for correction. The automatic control handles the different elements of the system based on the difference in the readings with the set point to decrease or increase the level of liquid carbon dioxide inside the storage tank and to increase or decrease the pressure inside the storage tank. One more aspect of the quality of the washing fluid is its cleaning. Because the washing fluid is reused, it must be cleaned not only of the insoluble dirt particles in the fluid that are separated with filtering media but also must be cleaned of the soluble substances in it, so that the fluid Washing must be distilled. Maintenance processes For the correct operation of the system it is necessary that several maintenance processes be carried out, including the change of filters, the cleaning of the container of wastes soluble in washing fluid and the recharge of the washing fluid. Because this is an open system to the atmosphere to remove and put the items to be washed in the washing compartment, the loss of washing fluid is inevitable, so it must be replaced periodically. The refilling of the washing fluid can be achieved by changing the storage tank or filling it with liquid washing fluid from another tank or container that is preferably connected momentarily to said storage tank. Washing fluid can be transferred from one tank to another with an external pump or with a system pump. Another object of the invention is to provide a method for cleaning the washing fluid of an apparatus operating with carbon dioxide. The method of cleaning the washing fluid includes the steps of:
- Estrangulamiento del fluido de lavado. En este paso se hace pasar el fluido de lavado por un medio de estrangulamiento en el cual la presión y la temperatura del fluido descienden.- Strangulation of the washing fluid. In this step, the washing fluid is passed through a throttling means in which the pressure and the temperature of the fluid decrease.
- Evaporado del fluido de lavado. En este paso se hace pasar el fluido de lavado por un medio de evaporación.- Evaporated washing fluid. In this step the washing fluid is passed through an evaporation medium.
En el proceso de destilado se pueden emplear medios de filtrado que permitan la separación de partículas no solubles en el fluido de lavado. El fluido de lavado a destilarse puede provenir de la parte inferior del tanque de almacenaje o de la parte inferior del compartimento de lavado con lo que el proceso se puede llevar a cabo antes, durante o después del lavado de artículos.In the distillation process, filtering media that allow the separation of non-soluble particles in the washing fluid can be used. The washing fluid to be distilled can come from the lower part of the storage tank or from the lower part of the washing compartment whereby the process can be carried out before, during or after the washing of articles.
Después de la destilación el fluido de lavado destilado se encuentra en estado gaseoso y el sistema puede requerir que se disminuya la relación vapor saturado/mezcla total del fluido de lavado por la que después de la destilación se puede condensar parcial o totalmente el fluido destilado.After distillation the distilled washing fluid is in a gaseous state and the system may require that the saturated steam / total mixture of the washing fluid ratio be reduced by which after distillation the distilled fluid may be partially or totally condensed.
Otro objetivo de la invención es el de proveer un aparato para limpiar un fluido de lavado con base de dióxido de carbono utilizado en la limpieza en seco de artículos. El aparato incluye: un tanque de almacenaje para almacenar el fluido de lavado, un medio de estrangulamiento del fluido de lavado en el que desciende la presión del fluido de lavado, un medio de evaporación del fluido de lavado, un medio de compresión para transportar y o comprimir el fluido de lavado, un medio de condensación del fluido de lavado, medios de filtrado del fluido de lavado para separar las partículas insolubles del fluido de lavado, una columna de destilación y un recipiente en el que se almacenan las sustancias no deseables solubles en el fluido de lavado.Another object of the invention is to provide an apparatus for cleaning a washing fluid based on carbon dioxide used in the dry cleaning of articles. The apparatus includes: a storage tank for storing the washing fluid, a means for throttling the washing fluid in which the pressure of the washing fluid decreases, a means for evaporating the washing fluid, a compression means for transporting me compress the washing fluid, a means of condensing the washing fluid, Washing fluid filtering means for separating insoluble particles from the washing fluid, a distillation column and a container in which the undesirable substances soluble in the washing fluid are stored.
Otro objetivo de la invención es el de proveer un método y aparato para aumentar la relación vapor saturado/mezcla total del fluido de lavado. El método para aumentar la relación vapor saturado/mezcla total del fluido de lavado incluye los pasos de:Another object of the invention is to provide a method and apparatus for increasing the saturated steam / total mixing ratio of the washing fluid. The method of increasing the saturated steam / total mixing ratio of the washing fluid includes the steps of:
- Estrangulamiento del fluido de lavado. En este paso se hace pasar el fluido de lavado por un medio de estrangulamiento en el cual la presión y la temperatura del fluido descienden.- Strangulation of the washing fluid. In this step, the washing fluid is passed through a throttling means in which the pressure and the temperature of the fluid decrease.
- Evaporado del fluido de lavado. En este paso se hace pasar el fluido de lavado por un medio de evaporación.- Evaporated washing fluid. In this step the washing fluid is passed through an evaporation medium.
- Transporte al tanque de almacenaje.- Transport to the storage tank.
Debido a que en este proceso se evapora el fluido de lavado es conveniente que pase por una columna de destilación para separarlo de las sustancias no deseables solubles en el mismo; además es posibles filtrar el fluido de lavado para separar el fluido de partículas solubles en el mismo. A fin de tener un control sobre la relación vapor saturado/mezcla total del fluido de lavado que regresa al tanque de almacenaje se puede opcionalmente condensar parcialmente el fluido de lavado haciéndolo pasar por uno o más condensadores de tal manera que no regrese únicamente fluido en estado gaseoso, sino que regrese una parte en estado gaseoso y otra en estado líquido. El fluido de lavado al que se le aumentará la relación vapor saturado/mezcla total de fluido puede provenir de la parte inferior del tanque de almacenaje o de la parte inferior del compartimento de lavado con lo que el proceso se puede llevar a cabo antes, durante o después del lavado de artículos.Because the washing fluid evaporates in this process, it is convenient that it passes through a distillation column to separate it from the undesirable substances soluble therein; It is also possible to filter the washing fluid to separate the fluid from soluble particles therein. In order to have control over the ratio of saturated steam / total mixing of the washing fluid that returns to the storage tank, it is possible to optionally partially condense the washing fluid by passing it through one or more condensers such that only fluid in the state does not return gas, but return one part in a gaseous state and another in a liquid state. The washing fluid to which the saturated steam / total fluid mixture ratio will be increased can come from the bottom of the storage tank or from the bottom of the Washing compartment with which the process can be carried out before, during or after washing items.
Para este proceso se pueden utilizar alternativamente o conjuntamente medios calefactores del fluido de lavado. Los medios calefactores se pueden encontrar dentro del tanque de almacenaje, dentro del compartimento de lavado o dentro de ambos. Estos mismos medios calefactores pueden evaporar el fluido de lavado en estado líquido y aumentar la presión del fluido.Heating means of the washing fluid can be used alternatively or together. The heating means can be found inside the storage tank, inside the washing compartment or both. These same heating means can evaporate the washing fluid in a liquid state and increase the fluid pressure.
En algunas circunstancias puede ser necesario disminuir la relación vapor saturado/mezcla total del fluido de lavado. En estos casos se condensa parte del vapor saturado del aparato. El vapor saturado que se condensa puede provenir del tanque de almacenaje, del compartimento de lavado y o de la columna de destilación. El fluido de lavado que regresa al compartimento de lavado se encontrará a una temperatura menor que el fluido del tanque de almacenaje por lo que disminuirá la presión del mismo.In some circumstances it may be necessary to decrease the saturated steam / total mixture of the wash fluid ratio. In these cases, part of the saturated vapor of the apparatus is condensed. The saturated steam that condenses can come from the storage tank, the washing compartment and the distillation column. The washing fluid that returns to the washing compartment will be at a lower temperature than the storage tank fluid, which will reduce the pressure of the storage tank.
BREVE DESCRIPCIÓN DE LOS DIBUJOS.BRIEF DESCRIPTION OF THE DRAWINGS.
La invención se entenderá mejor por referencia a los dibujos adjuntos, en donde:The invention will be better understood by reference to the accompanying drawings, wherein:
La figl es un diagrama esquemático de un sistema en el cuál se muestran los elementos esenciales de la invención.Figl is a schematic diagram of a system in which the essential elements of the invention are shown.
La fig2 es un diagrama esquemático de un sistema en el cuál se muestran los elementos esenciales de la invención con medios de filtrado adicionales dispuestos entre los medios de estrangulamiento y el tanque de almacenamiento, medios de calentamiento del tanque de almacenamiento, medios de calentamiento del compartimento de lavado, medios de condensación adicionales, una bomba adicional y válvulas adicionales.Fig2 is a schematic diagram of a system in which the essential elements of the invention are shown with additional filtering means arranged between the throttling means and the storage tank, heating means of the storage tank, heating means of the washing compartment, additional condensation media, an additional pump and additional valves.
DESCRIPCIÓN DETALLADA DE LA INVENCIÓN.DETAILED DESCRIPTION OF THE INVENTION.
En la fig 1 se muestra esquemáticamente un sistema que puede llevar a cabo la presente invención. La válvula 22 es una válvula de seguridad que se abre en forma mecánica en caso de sobrepasar la presión de diseño del sistema y la válvula 23 es una válvula que puede ser, opcionalmente, de tipo manual o automática y se encuentra abierta en todo momento salvo cuando se desea limpiar el recipiente receptor de desechos insolubles 5. Las válvulas restantes así como los demás elementos del aparato son manejados por un control electrónico automático. El control electrónico utilizado no es determinante para la el funcionamiento de la invención, se pueden utilizar una variedad de controles automáticos como son: un control lógico programable o circuito integrado entre otros.A system that can carry out the present invention is schematically shown in FIG. The valve 22 is a safety valve that opens mechanically in case of exceeding the design pressure of the system and the valve 23 is a valve that can be, optionally, of manual or automatic type and is open at all times except when it is desired to clean the insoluble waste receiving container 5. The remaining valves as well as the other elements of the apparatus are operated by an automatic electronic control. The electronic control used is not decisive for the operation of the invention, a variety of automatic controls can be used such as: a programmable logic control or integrated circuit among others.
Después de ingresar los artículos a ser lavados en el compartimento de lavado 1 y de cerrar la puerta del mismo se procede al presurizado del compartimento de lavado 1 este paso comienza con la absorción del aire que se encuentra dentro del compartimento de lavado 1 lo anterior se logra accionando el medio de compresión 3 después de abrir las válvulas 17, 18 y 19; la línea 31 se encuentra abierta a la atmósfera y, por razones de seguridad, debe de desembocar fuera de el inmueble donde se encuentre el aparato. Terminando la absorción se cierran dichas válvulas y se abren las válvulas 20 y 11 permitiendo el flujo del fluido de lavado en estado gaseoso del tanque de almacenaje 2 al compartimento de lavado 1, estas válvulas permanecerán abiertas hasta la ventilación del compartimento de lavado 1. El tanque de almacenaje 2 contendrá al fluido de lavado en dos fases, tanto en fase de líquido saturado como en fase de vapor saturado, estará conectado a las línea 24 en la parte superior del mismo y a la línea 28 en la parte inferior a fin de tener acceso al fluido de lavado en ambos estados.After entering the items to be washed in the washing compartment 1 and closing the door thereof, the washing compartment 1 is pressurized. This step begins with the absorption of the air inside the washing compartment 1. achieved by actuating the compression means 3 after opening the valves 17, 18 and 19; Line 31 is open to the atmosphere and, for security reasons, it must flow out of the building where the device is located. At the end of the absorption said valves are closed and the valves 20 and 11 are opened allowing the flow of the washing fluid in the gaseous state from the storage tank 2 to the washing compartment 1, these valves will remain open up to the ventilation of the washing compartment 1. The storage tank 2 will contain the washing fluid in two phases, both in the saturated liquid phase and in the saturated steam phase, it will be connected to the lines 24 at the top of it and to the line 28 at the bottom in order to have access to the washing fluid in both states.
El llenado parcial del compartimento de lavado 1 con fluido de lavado en estado líquido se llevará a cabo encendiendo la bomba 8 después de abrir las válvulas 12 y 13. Una vez que se haya transferido el líquido saturado necesario se cierra la válvula 12 y se abre la válvula 14 haciendo circular, con ayuda de la bomba 8, el fluido de lavado a través de las líneas 27, 29 y 30 pasando por el filtro 9, donde las partículas insolubles son separadas del fluido de lavado, hasta llegar de nuevo al compartimento de lavado 1 al mismo tiempo se agitarán los artículos dentro del compartimento de lavado. La agitación tiene como fin remover la suciedad de los artículos. La agitación se puede llevar a cabo de diferentes maneras en este tipo de sistemas, se puede utilizar agitación sónica, un motor o una turbina para mover una canastilla dentro del compartimento de lavado como ya ha sido descrito en la literatura patentada y abierta. La duración de esta etapa es variable.Partial filling of the washing compartment 1 with washing fluid in the liquid state will be carried out by turning on the pump 8 after opening the valves 12 and 13. Once the necessary saturated liquid has been transferred, the valve 12 is closed and opened the valve 14 circulating, with the aid of the pump 8, the washing fluid through lines 27, 29 and 30 passing through the filter 9, where the insoluble particles are separated from the washing fluid, until they reach the compartment again Washing items 1 at the same time will shake the items inside the wash compartment. Stirring is intended to remove dirt from items. The agitation can be carried out in different ways in this type of systems, sonic agitation, a motor or a turbine can be used to move a basket inside the washing compartment as already described in the patented and open literature. The duration of this stage is variable.
La extracción del fluido de lavado del compartimento de lavado tiene dos etapas: la primera, el drenado del fluido en estado líquido que se realiza cerrando la válvula 13 y abriendo la válvula 15, con la bomba 8 aún encendida; las válvulas 14 y 15 se cierran después de apagar la bomba 8. La segunda etapa es la extracción del fluido de lavado en estado gaseoso que se realiza cerrando la válvula 20 y encendiendo el medio de compresión 3 después de abrir las válvulas 17 y 21. Al termino de la extracción se apaga el medio de compresión 3, se cierran las válvulas 17 y 21 y se abren por unos segundos la válvula 19 para dejar escapar a la atmósfera el vapor del fluido de lavado que pudiera permanecer dentro del compartimento de lavado 1; finalmente se cierra la válvula 11. Al terminar esta etapa el usuario puede proceder a abrir la puerta del compartimento de lavado 1 y sacar los artículos lavados. El proceso de corrección de la calidad del fluido del tanque de almacenaje 2 se puede realizar durante el lavado de artículos o en momentos en que no se estén lavando artículos, no es necesario que se encuentre cerrada la puerta del compartimento de lavado 1. Se lleva a cabo abriendo las válvulas 16 y 21 y encendiendo el medio de compresión 3, haciendo circular el fluido en estado liquido por un medio de estrangulamiento 6 al paso de la cuál desciende la presión y la temperatura del fluido de lavado, después pasa por un medio de evaporación 7 en el que la mayor parte del fluido de lavado cambia de estado líquido a estado gaseoso y las sustancias no deseables, provenientes de la suciedad soluble de los artículos lavados, permanecen en estado líquido, los fluidos pasan a la columna de destilación 4 en la cual las sustancias no deseables son separadas y caen por gravedad al recipiente 5, en la columna de destilación 4 se evapora la fracción del fluido de lavado que aún se encontraba en estado líquido y después de pasar por el medio de compresión 3 pasa por un medio de condensación 10 en el que el fluido pierde parte de la entalpia ganada en la compresión y regresa al tanque de almacenaje 2 destilado y con una relación vapor saturado/mezcla total del fluido de lavado mayor. No necesariamente pero preferentemente debe de haber un medio de filtrado 35 entre el tanque de almacenaje 2 y el medio de estrangulamiento 6 para evitar que partículas en el fluido de lavado congestionen el medio de estrangulamiento 6. La duración de esta etapa es variable y depende de las condiciones del fluido en el tanque de almacenaje 2. Al termino de esta etapa se cierran las válvulas 16 y 21 y se apaga el medio de compresión 3. Es posible agregar al sistema uno o más medios de condensación adicionales 41 y 42 dispuestos como se muestra en la fig. 2 a fin de disminuir la relación vapor saturado/mezcla total del fluido de lavado que regresa al tanque de almacenaje 2. La circulación del fluido por los medios de condensación 10, 41 y 42 y al tanque de almacenaje 2 es restringida por las válvulas 43, 44, 45, 46, 47 y 48 y se controla de acuerdo a las condiciones del fluido en el tanque de almacenaje 2. El sistema puede requerir de el calentamiento del fluido de lavado en cuyo caso se activan los medios de calefacción 36 y 37 cuando el aparato se encuentra lavando artículos o únicamente el medio de calefacción 36 cuando el aparato no se encuentra lavando artículos.The extraction of the washing fluid from the washing compartment has two stages: the first, the draining of the fluid in a liquid state that is carried out by closing the valve 13 and opening the valve 15, with the pump 8 still on; Valves 14 and 15 close after the pump is turned off. The second stage is the extraction of the washing fluid in the gaseous state, which is carried out by closing the valve 20 and turning on the compression means 3 after opening the valves 17 and 21. At the end of the extraction, the compression means 3 is turned off, the valves 17 and 21 are closed and opened by seconds the valve 19 to allow the steam of the washing fluid to escape into the atmosphere that could remain inside the washing compartment 1; valve 11 is finally closed. At the end of this stage the user can proceed to open the door of the washing compartment 1 and take out the washed items. The fluid quality correction process of the storage tank 2 can be carried out during the washing of articles or at times when articles are not being washed, it is not necessary that the door of the washing compartment 1 be closed. It is carried carried out by opening the valves 16 and 21 and turning on the compression means 3, circulating the fluid in a liquid state through a throttling means 6 to the step from which the pressure and the temperature of the washing fluid decreases, then passes through a medium evaporation 7 in which most of the washing fluid changes from a liquid to a gaseous state and the undesirable substances from the soluble dirt of the washed articles remain in a liquid state, the fluids pass to the distillation column 4 in which the undesirable substances are separated and fall by gravity to the container 5, in the distillation column 4 the fraction of the washing fluid that still remains is evaporated It was in a liquid state and after passing through the compression means 3 it passes through a condensation means 10 in which the fluid loses part of the enthalpy gained in the compression and returns to the distilled storage tank 2 and with a saturated steam / total mixing of the major wash fluid. Not necessarily but preferably there should be a filtration means 35 between the storage tank 2 and the throttling means 6 to prevent particles in the washing fluid from congesting the throttling medium 6. The duration of this stage is variable and depends on the conditions of the fluid in the storage tank 2. At the end of this stage they close the valves 16 and 21 and the compression means 3 is turned off. It is possible to add to the system one or more additional condensation means 41 and 42 arranged as shown in fig. 2 in order to reduce the ratio of saturated steam / total mixing of the washing fluid returning to the storage tank 2. The circulation of the fluid through the condensation means 10, 41 and 42 and to the storage tank 2 is restricted by the valves 43 , 44, 45, 46, 47 and 48 and is controlled according to the conditions of the fluid in the storage tank 2. The system may require heating of the washing fluid in which case the heating means 36 and 37 are activated when the appliance is washing items or only the heating means 36 when the appliance is not washing items.
La recarga del tanque de almacenaje se realiza conectando un tanque con fluido de lavado, de preferencia de manera momentánea al tanque de almacenaje 2 por medio de la línea 40. Se abre la válvula 39 y se acciona la bomba 38 hasta haber transferido el suficiente fluido de lavado después se apaga la bomba 38 y se cierra la válvula 39. The storage tank is recharged by connecting a tank with washing fluid, preferably momentarily to the storage tank 2 via line 40. Valve 39 is opened and pump 38 is operated until sufficient fluid has been transferred after washing, pump 38 is turned off and valve 39 is closed.

Claims

REIVINDICACIONES
Habiendo descrito suficientemente la invención, reclamo como de mi propiedad nido de las siguientes cláusulas:Having sufficiently described the invention, I claim as my property nest of the following clauses:
1- Un método para el lavado en seco utilizando un fluido con dióxido de carbono como base caracterizado por el control de la relación vapor saturado/mezcla total del fluido de lavado; el método incluye los pasos de:1- A method for dry cleaning using a carbon dioxide fluid as a base characterized by the control of the saturated steam / total mixture of the washing fluid ratio; The method includes the steps of:
- cargado del compartimento de lavado con artículos a ser lavados - presurizado del compartimento de lavado- loading of the washing compartment with items to be washed - pressurized of the washing compartment
- llenado parcial del compartimento de lavado con fluido de lavado en estado líquido- partial filling of the washing compartment with liquid washing fluid
- agitación de los artículos a ser lavados dentro del compartimento de lavado drenado del fluido de lavado del compartimento de lavado - control de la calidad del fluido de lavado, en el que dicho control de la calidad incluye el control de la presión y de la relación vapor saturado/mezcla total del fluido de lavado y el control de la presión del fluido del lavado- agitation of the items to be washed within the washing compartment drained of the washing fluid of the washing compartment - quality control of the washing fluid, wherein said quality control includes the control of the pressure and the ratio saturated steam / total mixing of the washing fluid and the control of the washing fluid pressure
2- Un método de conformidad con la reivindicación 1, caracterizado por incluir el filtrado del fluido de lavado2- A method according to claim 1, characterized by including the filtering of the washing fluid
3- Un método de conformidad con la reivindicación 1, caracterizado por que dicho control de la calidad del fluido de lavado incluye la destilación del fluido de lavado 4- Un método para aumentar la relación vapor saturado/mezcla total del fluido de lavado de un aparato de lavado en seco con dióxido de carbono, caracterizado por incluir el estrangulamiento del fluido de lavado; el método incluye los pasos de: - estrangulamiento del fluido de lavado para disminuir la presión del mismo3- A method according to claim 1, characterized in that said control of the quality of the washing fluid includes the distillation of the washing fluid 4- A method for increasing the ratio of saturated steam / total mixing of the washing fluid of a dry cleaning apparatus with carbon dioxide, characterized by including the throttling of the washing fluid; The method includes the steps of: - throttling of the washing fluid to reduce the pressure of the same
- evaporado del fluido de lavado- evaporated washing fluid
5- Un método de conformidad con la reivindicación 4, caracterizado por incluir además la condensación parcial del fluido de lavado5- A method according to claim 4, characterized in that it also includes the partial condensation of the washing fluid
6- Un método de conformidad con la reivindicación 4, caracterizado por incluir además la destilación del fluido de lavado6- A method according to claim 4, characterized in that it also includes the distillation of the washing fluid
7- Un método de conformidad con la reivindicación 4, caracterizado por incluir además el filtrado del fluido de lavado7- A method according to claim 4, characterized in that it also includes the filtering of the washing fluid
8- Un método de conformidad con la reivindicación 4, caracterizado por que el fluido de lavado que se estrangula proviene del tanque de almacenaje 9- Un método de conformidad con la reivindicación 4, caracterizado por que el fluido de lavado que se estrangula proviene del compartimento de lavado 10- Un método de conformidad con la reivindicación 4, caracterizado por que además se calienta el fluido de lavado 11- Un método para aumentar la presión del fluido de lavado de un aparato de lavado en seco con dióxido de carbono caracterizado por incluir el estrangulamiento del fluido de lavado; el método incluye los pasos de:8- A method according to claim 4, characterized in that the washing fluid that is throttled comes from the storage tank 9- A method in accordance with claim 4, characterized in that the washing fluid that is throttled comes from the compartment 10- A method according to claim 4, characterized in that the washing fluid is also heated 11- A method for increasing the pressure of the washing fluid of a dry-cleaning apparatus with carbon dioxide characterized by including the throttling of the washing fluid; The method includes the steps of:
- estrangulamiento del fluido de lavado- wash fluid throttling
- evaporado del fluido de lavado- evaporated washing fluid
- compresión del fluido de lavado - Un método de conformidad con la reivindicación 11, caracterizado por que además se incluye la destilación del fluido de lavado - Un método de conformidad con la reivindicación 11, caracterizado por que además se incluye el filtrado del fluido de lavado - Un método de conformidad con la reivindicación 11, caracterizado por que el fluido de lavado que se estrangula proviene del tanque de almacenaje - Un método de conformidad con la reivindicación 11, caracterizado por que el fluido de lavado que se estrangula proviene del compartimento de lavado - Un método de conformidad con la reivindicación 11, caracterizado por que además se calienta el fluido de lavado - Un método para disminuir la presión y la relación vapor saturado/mezcla total del fluido de lavado de un aparato de lavado en seco con dióxido de carbono, caracterizado por incluir la condensación del fluido de lavado - Un método de conformidad con la reivindicación 17, caracterizado por que el fluido de lavado que se condensa proviene del tanque de almacenaje - Un método de conformidad con la reivindicación 17, caracterizado por que el fluido de lavado que se condensa proviene del compartimento de lavado - Un método de conformidad con la reivindicación 17, caracterizado por que el fluido de lavado que se condensa proviene de la columna de destilación - Un método de limpieza del fluido de lavado de un aparato de lavado en seco con dióxido de carbono, caracterizado por incluir el estrangulamiento del fluido de lavado; el método incluye los pasos de: estrangulamiento del fluido de lavado evaporado del fluido de lavado - paso del fluido a través de una columna de destilación- washing fluid compression - A method in accordance with claim 11, characterized in that distillation of the washing fluid is also included - A method in accordance with claim 11, characterized in that the filtering of the washing fluid is also included - A method in accordance with claim 11, characterized in that the washing fluid that is throttled comes from the storage tank - A method according to claim 11, characterized in that the washing fluid that is throttled comes from the washing compartment - a method in accordance with claim 11, characterized in that the washing fluid is also heated - A method for lowering the pressure and the ratio of saturated steam / total mixing of the washing fluid of a dry cleaning apparatus with carbon dioxide, characterized by including condensation of the washing fluid - A method according to claim 17, characterized in that the washing fluid or that condenses comes from the storage tank - A method according to claim 17, characterized in that the washing fluid that condenses comes from the washing compartment - A method in accordance with claim 17, characterized in that the fluid from condensate washing comes from the distillation column - A method of cleaning the washing fluid of a dry cleaning apparatus with carbon dioxide, characterized by including the throttling of the washing fluid; The method includes the steps of: throttling of the evaporated washing fluid of the washing fluid - passage of the fluid through a distillation column
22- Un método de conformidad con la reivindicación 21, caracterizado por que además se incluye la condensación parcial del fluido de lavado 23- Un método de conformidad con la reivindicación 21, caracterizado por que además se incluye el filtrado del fluido de lavado22- A method according to claim 21, characterized in that the partial condensation of the washing fluid is also included 23- A method according to claim 21, characterized in that the filtering of the washing fluid is also included
24- Un método de conformidad con la reivindicación 21, caracterizado por que el fluido de lavado que se estrangula proviene del tanque de almacenaje 25- Un método de conformidad con la reivindicación 21, caracterizado por que el fluido de lavado que se estrangula proviene del compartimento de lavado 26- Un aparato para lavar artículos en un fluido con dióxido de carbono como base caracterizado por ser capaz de controlar la presión y la relación vapor saturado/ mezcla total del fluido de lavado; el aparato incluye: un compartimento de lavado con puerta en el cuál se agitarán y se pondrán en contacto con dicho fluido de lavado los artículos a ser lavados, un tanque de almacenaje para almacenar dicho fluido de lavado en estado líquido y gaseoso, una bomba para transportar dicho fluido, un medio de compresión para transportar y o comprimir dicho fluido, un medio de evaporación, un medio de condensación, una columna de destilación donde se separarán las sustancias solubles en dicho fluido de lavado, medios de filtrado para separar las sustancias insolubles en dicho fluido de lavado, un medio de estrangulamiento del fluido de lavado al paso del cual descenderá la presión de dicho fluido24- A method according to claim 21, characterized in that the washing fluid that is throttled comes from the storage tank 25- A method in accordance with claim 21, characterized in that the washing fluid that is throttled comes from the compartment Washing 26- An apparatus for washing articles in a fluid with carbon dioxide as a base characterized by being able to control the pressure and the ratio of saturated steam / total mixing of the washing fluid; The apparatus includes: a washing compartment with a door in which the items to be washed will be agitated and contacted with said washing fluid, a storage tank for storing said washing fluid in a liquid and gaseous state, a pump for transporting said fluid, a compression means for transporting and compressing said fluid, an evaporation means, a condensation medium, a distillation column where the soluble substances in said washing fluid will be separated, filtering means to separate the insoluble substances in said wash fluid, a means of throttling the washing fluid at the step from which the pressure of said fluid will decrease
27- El aparato de conformidad con la reivindicación 26, caracterizado por que además cuenta con más de un medio de condensación y válvulas dispuestas de tal manera que el fluido puede pasar o no por un o más de un medios de condensación27. The apparatus according to claim 26, characterized in that it also has more than one condensing means and valves arranged in such a way that the fluid may or may not pass through one or more of a condensing means.
28- El aparato de conformidad con la reivindicación 26, caracterizado por que además cuenta con medios calefactores en el tanque de almacenaje para calentar el fluido de lavado 29- El aparato de conformidad con la reivindicación 26, caracterizado por que además cuenta con medios calefactores en el compartimento de lavado para calentar el fluido de lavado 30- Un aparato para controlar la relación vapor saturado/mezcla total del fluido de lavado utilizado en un aparato de lavado en seco con dióxido de carbono, caracterizado por incluir: un medio de estrangulamiento del fluido de lavado en el que desciende la presión del fluido de lavado, un medio de evaporación del fluido de lavado , un medio de compresión para transportar y o comprimir el fluido de lavado, un medio de condensación del fluido de lavado28- The apparatus according to claim 26, characterized in that it also has heating means in the storage tank to heat the washing fluid 29- The apparatus according to claim 26, characterized in that it also has heating means in the washing compartment for heating the washing fluid 30- An apparatus for controlling the saturated steam / total mixing ratio of the washing fluid used in a dry cleaning apparatus with carbon dioxide, characterized by including: a means for throttling the fluid in which the pressure of the washing fluid decreases, a means of evaporating the washing fluid, a compression means for transporting and compressing the washing fluid, a means of condensing the washing fluid
31- El aparato de conformidad con la reivindicación 30, caracterizado por que además cuenta con más de un medio de condensación y válvulas dispuestas de tal manera que el fluido puede pasar o no por un o más de un medios de condensación - El aparato de conformidad con la reivindicación 30, caracterizado por que además cuenta con medios de filtrado del fluido de lavado - El aparato de conformidad con la reivindicación 30, caracterizado por que además cuenta con medios calefactores en el tanque de almacenaje para calentar el fluido de lavado - El aparato de conformidad con la reivindicación 30, caracterizado por que además cuenta con medios calefactores en el compartimento de lavado para calentar el fluido de lavado - Un aparato para controlar la presión del fluido de lavado utilizado en un aparato de lavado en seco con dióxido de carbono, caracterizado por incluir medios de estrangulamiento del fluido de lavado; el aparato incluye: un medio de estrangulamiento del fluido de lavado en el que desciende la presión del fluido de lavado, un medio de evaporación del fluido de lavado, un medio de compresión para transportar y o comprimir el fluido de lavado, un medio de condensación del fluido de lavado - El aparato de conformidad con la reivindicación 35, caracterizado por que además cuenta con más de un medio de condensación y válvulas dispuestas de tal manera que el fluido puede pasar o no por un o más de un medios de condensación - El aparato de conformidad con la reivindicación 35, caracterizado por que además cuenta con medios de filtrado del fluido de lavado - El aparato de conformidad con la reivindicación 35, caracterizado por que además cuenta con medios calefactores en el tanque de almacenaje para calentar el fluido de lavado - El aparato de conformidad con la reivindicación 35, caracterizado por que además cuenta con medios calefactores en el compartimento de lavado para calentar el fluido de lavado - Un aparato para limpiar el fluido de lavado utilizado en un aparato de lavado en seco con dióxido de carbono, caracterizado por incluir medios de estrangulamiento del fluido de lavado; el aparato incluye: un medio de estrangulamiento del fluido de lavado en el que desciende la presión del fluido de lavado, un medio de evaporación del fluido de lavado, un compresor para transportar y o comprimir el fluido de lavado, una columna de destilación, medios de filtrado del fluido de lavado. 31. The apparatus according to claim 30, characterized in that it also has more than one condensing means and valves arranged in such a way that the fluid may or may not pass through one or more of a condensing means. - The apparatus according to claim 30, characterized in that it also has means for filtering the washing fluid - The apparatus according to claim 30, characterized in that it also has heating means in the storage tank for heating the fluid for washing - The apparatus according to claim 30, characterized in that it also has heating means in the washing compartment for heating the washing fluid - An apparatus for controlling the pressure of the washing fluid used in a dry washing apparatus with carbon dioxide, characterized by including means for throttling the washing fluid; The apparatus includes: a means of throttling the washing fluid in which the pressure of the washing fluid decreases, a means of evaporating the washing fluid, a compression means for transporting and compressing the washing fluid, a condensing means of the washing fluid - The apparatus according to claim 35, characterized in that it also has more than one condensing means and valves arranged in such a way that the fluid may or may not pass through one or more of a condensing means - The apparatus according to claim 35, characterized in that it also has means for filtering the washing fluid - The apparatus according to claim 35, characterized in that it also has heating means in the storage tank for heating the washing fluid - The apparatus according to claim 35, characterized in that it also has heating means in the compartment for washing to heat the washing fluid - An apparatus for cleaning the washing fluid used in a dry cleaning apparatus with carbon dioxide, characterized by including means for throttling the washing fluid; The apparatus includes: a means of throttling the washing fluid in which the pressure of the washing fluid decreases, a means of evaporating the washing fluid, a compressor for transporting and compressing the washing fluid, a distillation column, means of filtration of the washing fluid.
PCT/MX2003/000066 2002-11-04 2003-08-18 Washing method and apparatus using carbon dioxide WO2004042134A1 (en)

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MXPA/A/2002/010824 2002-11-04
MXPA02010824 MXPA02010824A (en) 2002-11-04 2002-11-04 Method and washing apparatus employing carbon dioxide.

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EP4001497A3 (en) * 2020-11-17 2022-06-22 LG Electronics Inc. Laundry treating apparatus

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AU2003261013A1 (en) 2004-06-07
MXPA02010824A (en) 2004-05-10

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