ES2918257B2 - Low pressure chamber for testing an aerosol treatment device - Google Patents
Low pressure chamber for testing an aerosol treatment deviceInfo
- Publication number
- ES2918257B2 ES2918257B2 ES202230281A ES202230281A ES2918257B2 ES 2918257 B2 ES2918257 B2 ES 2918257B2 ES 202230281 A ES202230281 A ES 202230281A ES 202230281 A ES202230281 A ES 202230281A ES 2918257 B2 ES2918257 B2 ES 2918257B2
- Authority
- ES
- Spain
- Prior art keywords
- aerosol
- chamber
- treatment device
- testing
- low pressure
- 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.)
- Active
Links
- 239000000443 aerosol Substances 0.000 title claims description 50
- 238000012360 testing method Methods 0.000 title claims description 16
- 239000002775 capsule Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 230000000415 inactivating effect Effects 0.000 claims description 12
- 238000011109 contamination Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000003380 propellant Substances 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 241000293869 Salmonella enterica subsp. enterica serovar Typhimurium Species 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/02—Air-pressure chambers; Air-locks therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/02—Air-pressure chambers; Air-locks therefor
- B01L1/025—Environmental chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/08—Ergonomic or safety aspects of handling devices
- B01L2200/082—Handling hazardous material
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
- Colloid Chemistry (AREA)
- Measuring Fluid Pressure (AREA)
Description
DESCRIPCIÓN DESCRIPTION
Cámara de baja presión para prueba de un dispositivo de tratamiento de aerosoles Low pressure chamber for testing an aerosol treatment device
Objeto de la Invención y estado de la técnica: Object of the Invention and state of the art:
Los aerosoles son partículas diminutas de sólidos o líquidos suspendidos en el aire u otro gas; que pueden dispersarse y propagarse a distancias importantes; y según sea su naturaleza concreta, pueden alterar procesos industriales o producir enfermedades. Para resolver este problema se han desarrollado dispositivos para el tratamiento de aerosoles cuya efectividad es preciso probar. Aerosols are tiny particles of solids or liquids suspended in air or other gas; that they can disperse and spread over significant distances; and depending on their specific nature, they can alter industrial processes or cause diseases. To solve this problem, aerosol treatment devices have been developed, the effectiveness of which needs to be proven.
Dada la capacidad de dispersión y propagación de los aerosoles por el aire, resulta evidente el riesgo de probar estos dispositivos con los aerosoles objetivo activos; por ello frecuentemente se utilizan aerosoles diferentes que se consideran similares. Si bien este método puede resultar valido para los dispositivos de tratamiento por retención mecánica de partículas; filtros tipo HEPA o MERV; existen nuevas tecnologías que utilizan sistemas físicos; como la radiación UVC; o químicos; ozono, iones, etc..; en los que el método de la partícula similar puede proporcionar resultados incorrectos. La prueba optima debe hacerse con los mismos aerosoles que se pretende neutralizar; pero minimizando el riesgo de contaminación del ambiente exterior por dichos aerosoles. Given the ability of aerosols to disperse and spread through the air, the risk of testing these devices with active target aerosols is evident; For this reason, different aerosols that are considered similar are frequently used. Although this method may be valid for treatment devices for mechanical particle retention; HEPA or MERV type filters; there are new technologies that use physical systems; such as UVC radiation; or chemicals; ozone, ions, etc.; where the similar particle method may provide incorrect results. The optimal test should be done with the same aerosols that are intended to be neutralized; but minimizing the risk of contamination of the outside environment by said aerosols.
Utilidad de la Invención: Utility of the Invention:
Es una cámara que permite probar la efectividad de un dispositivo de tratamiento de aerosoles, minimizando el riesgo de contaminación del ambiente exterior por dichos aerosoles. It is a chamber that allows testing the effectiveness of an aerosol treatment device, minimizing the risk of contamination of the outside environment by said aerosols.
La cámara se conecta al dispositivo objeto de prueba formando un conjunto estanco, en cuyo interior se liberan y recogen las muestras de aerosoles. Dispone de una cápsula de vacío para funcionar a una presión inferior a la del ambiente exterior. Ambas presiones se controlan con objeto de detectar fallos de hermeticidad; en cuyo caso, se dispersa un agente inactivador de aerosoles dentro de la cámara. Este mismo agente inactivador se utiliza antes de extraer las muestras de la cámara, que para no resultar afectadas están depositadas en cápsulas herméticas. The chamber is connected to the device under test forming a sealed assembly, inside which the aerosol samples are released and collected. It has a vacuum capsule to operate at a pressure lower than that of the outside environment. Both pressures are controlled in order to detect leaks; in which case, an aerosol inactivating agent is dispersed within the chamber. This same inactivating agent is used before extracting the samples from the chamber, which are placed in airtight capsules to avoid being affected.
Descripción de la Invención: Description of the Invention:
Es una cámara que permite probar la efectividad de un dispositivo de tratamiento de aerosoles, minimizando el riesgo de contaminación del ambiente exterior por dichos aerosoles. It is a chamber that allows testing the effectiveness of an aerosol treatment device, minimizing the risk of contamination of the outside environment by said aerosols.
Está delimitada por una envolvente que dispone de conductos de conexión (1) con el dispositivo de tratamiento de aerosoles (2), de aberturas para introducir objetos en la cámara cuando no está funcionando (3), y de un sistema de manipulación de dichos objetos (4); formado todo ello un compartimento cerrado que resulta estanco respecto del ambiente exterior. It is delimited by an envelope that has connection ducts (1) with the aerosol treatment device (2), openings to introduce objects into the chamber when it is not working (3), and a system for handling said objects. (4); All of this forms a closed compartment that is sealed from the outside environment.
En su interior hay un difusor de aerosoles (5), un muestreador de aerosoles; que puede ser de captura simple o incluir registro de parámetros ambientales (6), y capsulas herméticas para almacenamiento de las muestras de aerosoles (7). Inside there is an aerosol diffuser (5), an aerosol sampler; which can be simple capture or include recording of environmental parameters (6), and hermetic capsules for storing aerosol samples (7).
Esta caracterizado por disponer en el interior de la cámara de una capsula de vacío (8) con válvula de apertura (9), un medidor de la presión diferencial interior y exterior (10), un propulsor que mueve el gas de la cámara a través del dispositivo de tratamiento (11), y un difusor de agente inactivador de los aerosoles dispersos dentro de la cámara (12). It is characterized by having inside the chamber a vacuum capsule (8) with an opening valve (9), an internal and external differential pressure meter (10), a propellant that moves the gas in the chamber through of the treatment device (11), and a diffuser of inactivating agent for the aerosols dispersed within the chamber (12).
El procedimiento de uso puede realizarse de forma manual o mecánica, se inicia mediante la apertura de la válvula de la capsula de vacío para reducir la presión interior por debajo de la presión atmosférica, y su control mediante el medidor de presión diferencial, de manera que si se alcanza un valor mínimo preestablecido, se acciona el sistema de difusión del agente inactivador de aerosoles. Este mismo agente inactivador se utiliza al final de la prueba, antes de extraer las muestras de la cámara, que para no resultar afectadas están depositadas en las capsulas herméticas. The use procedure can be carried out manually or mechanically, it begins by opening the valve of the vacuum capsule to reduce the internal pressure below atmospheric pressure, and its control using the differential pressure meter, so that If a pre-established minimum value is reached, the aerosol inactivating agent diffusion system is activated. This same inactivating agent is used at the end of the test, before removing the samples from the chamber, which are placed in hermetic capsules to avoid being affected.
Funcionamiento: Functioning:
La cámara se conecta al dispositivo objeto de prueba formando un conjunto estanco. Al abrirse la válvula de la capsula de vacío, una cantidad de gas de la cámara entra en la capsula. Dado que la envolvente es estanca, el gas encerrado en su interior se expande y por ello se reduce la presión interior. The camera is connected to the device under test forming a waterproof assembly. When the vacuum capsule valve opens, a quantity of gas from the chamber enters the capsule. Since the envelope is sealed, the gas trapped inside expands and therefore the internal pressure is reduced.
Esta diferencia de presión respecto del exterior, se controla con el medidor de la presión diferencial interior y exterior; aporta información sobre la estanqueidad de la cámara durante información todo el proceso e impide el desplazamiento de aerosoles hacia exterior, dado que se desplazan desde la zona de mayor presión hacia la de menor presión. This pressure difference with respect to the outside is controlled with the inside and outside differential pressure meter; It provides information about the tightness of the chamber during the entire process and prevents the movement of aerosols outwards, since they move from the area of higher pressure to that of lower pressure.
Así, los aerosoles dispersados circulan dentro del dispositivo de tratamiento objeto de prueba mediante el propulsor de gas, normalmente un ventilador; y se recogen con el muestreador; minimizando el riesgo de contaminación del ambiente exterior. Thus, the dispersed aerosols circulate within the treatment device under test by the gas propellant, usually a fan; and are collected with the sampler; minimizing the risk of contamination of the external environment.
La extracción de las muestras para su observación, requiere la apertura de la cámara, por ello antes es preciso neutralizar los posibles aerosoles que hayan quedado dispersos dentro de la cámara. Esto se realiza mediante un difusor de agente inactivador de eficacia probada, habitualmente un producto químico en estado gaseoso. El tiempo de acción se puede reducir con la ayuda del propulsor de gas, que contribuye a la dispersión. Extracting the samples for observation requires opening the chamber; therefore, it is first necessary to neutralize any possible aerosols that have been dispersed inside the chamber. This is done using a proven inactivating agent diffuser, usually a chemical in a gaseous state. The action time can be reduced with the help of the gas propellant, which contributes to dispersion.
Por último, en el supuesto de un fallo grave de estanqueidad de la cámara, el aire del ambiente exterior entraría en la cámara, se reduciría el diferencial de presión interior exterior y seria detectado por el medidor de presión, lo que implicaría el accionamiento del difusor de agente inactivador, evitando el riesgo de propagación de los aerosoles al exterior. Finally, in the event of a serious leak in the chamber, air from the outside environment would enter the chamber, the internal-exterior pressure differential would be reduced and would be detected by the pressure gauge, which would imply the activation of the diffuser. of inactivating agent, avoiding the risk of aerosols spreading to the outside.
Según lo expuesto, se posibilita la prueba de efectividad de un dispositivo de tratamiento de aerosoles, minimizando el riesgo de contaminación del ambiente exterior por dichos aerosoles. According to the above, the effectiveness test of an aerosol treatment device is possible, minimizing the risk of contamination of the external environment by said aerosols.
Descripción de una realización practica de la invención: Description of a practical embodiment of the invention:
Se propone probar la efectividad de un dispositivo que utiliza radiación ultravioleta para inactivar aerosoles de Salmonella Typhimurium. It is proposed to test the effectiveness of a device that uses ultraviolet radiation to inactivate Salmonella Typhimurium aerosols.
Se fabrica una cámara de forma cubica que se conecta al dispositivo de tratamiento mediante conductos de entrada y salida, resultando estanco respecto del ambiente exterior. A cubic-shaped chamber is manufactured that is connected to the treatment device through inlet and outlet ducts, resulting in watertightness with respect to the outside environment.
Se ha dispuesto un manómetro en el interior y otro en el interior de forma que ambos son visibles por el operador. También se ha dispuesto dispositivos de medida de la humedad relativa y de la temperatura interior. A pressure gauge has been arranged inside and another inside so that both are visible to the operator. Devices for measuring relative humidity and interior temperature have also been provided.
Una de sus caras es desmontable a modo de apertura, y dispone de guantes flexibles, que permiten manipular los siguientes objetos: One of its faces is removable as an opening, and it has flexible gloves, which allow the following objects to be manipulated:
- Una capsula de vacío con válvula, extraíble para vaciado y limpieza. - A vacuum capsule with valve, removable for emptying and cleaning.
- Un atomizador manual, extraíble para carga y limpieza, que incluye solución acuosa de Salmonella Typhimurium. - A manual atomizer, removable for loading and cleaning, which includes an aqueous solution of Salmonella Typhimurium.
- Un muestreador muestreador de aerosoles con batería incorporada, extraíble para carga y limpieza, y que utiliza placas de Petri con cierre hermético. - An aerosol sampler with a built-in battery, removable for charging and cleaning, and using hermetically sealed Petri dishes.
- Un spray con alcohol isopropílico a presión, como agente isopropílico inactivador de los aerosoles de Salmonella Typhimurium. - A spray with isopropyl alcohol under pressure, as an isopropyl inactivating agent for Salmonella Typhimurium aerosols.
EXPLICACIÓN BREVE DE LOS DIBUJOS BRIEF EXPLANATION OF THE DRAWINGS
Figura-1 Muestra vista esquemática en planta de una posible realización compacta de la invención. Figure-1 Shows a schematic plan view of a possible compact embodiment of the invention.
Figura-2 Muestra vista esquemática en planta de una posible realización de la invención, no compacta y utilizando conductos flexibles. Figure-2 Shows a schematic plan view of a possible embodiment of the invention, not compact and using flexible conduits.
LEYENDA LEGEND
1 Conductos de conexión 1 Connection ducts
2 Dispositivo de tratamiento de aerosoles 2 Aerosol treatment device
3 Aberturas para introducir objetos 3 openings to introduce objects
4 Sistema de manipulación de dichos objetos 4 Manipulation system for said objects
5 Difusor de aerosoles 5 Aerosol diffuser
6 Muestreador de aerosoles 6 Aerosol sampler
7 Capsulas de muestras de aerosoles 7 Aerosol sample capsules
8 Capsula de vacío 8 Vacuum capsule
9 Válvula de apertura de la capsula de vacío 9 Vacuum capsule opening valve
10 Medidor de la presión diferencial interior y exterior 10 Indoor and outdoor differential pressure meter
11 Propulsor que mueve el gas 11 Propeller that moves the gas
12 Difusor de agente inactivador 12 Inactivating agent diffuser
Claims (5)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES202230281A ES2918257B2 (en) | 2022-03-28 | 2022-03-28 | Low pressure chamber for testing an aerosol treatment device |
| EP23164569.8A EP4252906A1 (en) | 2022-03-28 | 2023-03-28 | Low-pressure chamber for testing an aerosol treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES202230281A ES2918257B2 (en) | 2022-03-28 | 2022-03-28 | Low pressure chamber for testing an aerosol treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2918257A1 ES2918257A1 (en) | 2022-07-14 |
| ES2918257B2 true ES2918257B2 (en) | 2024-05-03 |
Family
ID=82361423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES202230281A Active ES2918257B2 (en) | 2022-03-28 | 2022-03-28 | Low pressure chamber for testing an aerosol treatment device |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4252906A1 (en) |
| ES (1) | ES2918257B2 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7077486B2 (en) * | 2002-12-20 | 2006-07-18 | Tattershall Stephen F | Enclosure for handling hazardous material |
| CN101298626A (en) * | 2008-07-02 | 2008-11-05 | 中国人民解放军军事医学科学院微生物流行病研究所 | Highly effective particle filter biological detection method and safe cabinet detection system |
| US8658107B2 (en) * | 2008-08-20 | 2014-02-25 | Panasonic Healthcare Co., Ltd. | Isolator |
| CN102101062B (en) * | 2010-11-26 | 2013-05-01 | 中国人民解放军军事医学科学院微生物流行病研究所 | Aerosol microenvironment enclosed cabin for aerosol experiment |
| CN202011880U (en) * | 2011-01-10 | 2011-10-19 | 山东新华医疗器械股份有限公司 | Tester for bacteria blocking property of gas permeable packing material in aseptic apparatus |
| JP5559737B2 (en) * | 2011-04-28 | 2014-07-23 | パナソニックヘルスケア株式会社 | Isolator |
| CN105651944B (en) * | 2016-02-25 | 2017-12-08 | 青岛众瑞智能仪器有限公司 | A kind of animal aerosol exposes experimental system |
-
2022
- 2022-03-28 ES ES202230281A patent/ES2918257B2/en active Active
-
2023
- 2023-03-28 EP EP23164569.8A patent/EP4252906A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ES2918257A1 (en) | 2022-07-14 |
| EP4252906A1 (en) | 2023-10-04 |
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