WO2012010736A1 - Antifreeze concentration conductivity measuring device - Google Patents
Antifreeze concentration conductivity measuring device Download PDFInfo
- Publication number
- WO2012010736A1 WO2012010736A1 PCT/ES2011/070532 ES2011070532W WO2012010736A1 WO 2012010736 A1 WO2012010736 A1 WO 2012010736A1 ES 2011070532 W ES2011070532 W ES 2011070532W WO 2012010736 A1 WO2012010736 A1 WO 2012010736A1
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- WO
- WIPO (PCT)
- Prior art keywords
- antifreeze
- concentration
- measuring device
- solution
- electrical conductivity
- 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.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
Definitions
- the present invention belongs to the field of material analysis for the determination of its chemical or physical properties, and more specifically to the analysis of coolants and antifreeze liquids.
- the main object of the present invention is a measuring device that allows to determine the temperature and concentration of antifreeze present in a solution, even for solutions below 0 ° C, warning by means of an alarm signal in case said antifreeze is find below a certain value.
- a glycol-weight, or a refractometer device is used, by means of which it is possible to determine the protection temperature, from which the fluid loses its properties refrigerants and changes to solid phase.
- the techniques used are essentially laboratory methods such as liquid chromatography or electrophoresis, difficult to transport to the place of exploitation, and in no case adapted to the man in the field, for example people responsible for the proper functioning of the industrial engines or engines of a car, truck or bus park.
- the composition of a coolant requires a concentration of concrete antifreeze, which affects its density. The adulteration of the liquid or its poor concentration must be known in advance by the consumer since the consequences of using a liquid without the right conditions can be of great importance for the cooling circuit.
- the aforementioned technical problem is solved by providing a device for measuring the concentration of antifreeze in a refrigerant solution, which is at a temperature below 0 ° C, warning if the solution loses its characteristics cooling ideals, when the antifreeze is below a certain value.
- the measuring device, object of the present invention stands out primarily for being based on the principle of electrical conductivity of aqueous solutions, whereby, in any aqueous medium there is a direct relationship between its temperature and its electrical conductivity, therefore at higher The temperature of the coolant solution is its conductivity.
- the electrical conductivity is inversely proportional to its percentage in the solution, that is, the higher the conductivity of a cooling solution, the lower its concentration of antifreeze.
- the measuring device object of the invention is capable of carrying out measurements of refrigerant solutions with negative temperatures, which makes it possible to considerably optimize the refrigeration control processes of numerous industrial applications, such as in the beer industry, in refrigerators draft beer commercials.
- Said measuring device which can be portable or installable, comprises at least: a temperature sensor, preferably an NTC thermistor, adapted to measure the exact temperature of a cooling solution; an electrical conductivity sensor; a microcontroller linked to the temperature sensor and the electrical conductivity sensor, adapted for the management and processing of the information obtained by said sensors, and equipped with the necessary software to determine the concentration of antifreeze present in the refrigerant solution; a user interface, which preferably comprises a keyboard and a screen, by means of which it is possible to calibrate the measuring device object of the invention for different refrigerant solutions, and through which a user can know different parameters of the refrigerant solution; and a power supply connected to the general power grid, which provides power to the other components mentioned above.
- the measuring device object of the invention has alarm means, which can be luminous and / or acoustic , whereby the user has real-time knowledge of the state of said refrigerant solution.
- the microcontroller preferably has an ice detection system, for those situations in which the refrigerant solution exceeds the phase change temperature and solidifies, which if allowed to pass could have fatal consequences. .
- Figure 1. Shows a schematic view of the elements that make up the measuring device object of the invention
- the measuring device (1) of the concentration of antifreeze present in a refrigerant solution comprises:
- a temperature sensor (2) of the NTC thermistor type which is small in size and provides rapid temperature measurements with high sensitivity for an operating range between approximately -100 ° C and 450 ° C,
- microcontroller (4) linked to the temperature sensor (2) and the electrical conductivity sensor (3), equipped with the software necessary to determine the concentration of antifreeze as a percentage of the cooling solution, combining the data provided by both sensors (2, 3),
- a power supply (8) that provides electrical power to the other components of the measuring device (1) object of the invention.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
DISPOSITIVO DE MEDIDA DE LA CONCENTRACIÓN DE MEASUREMENT DEVICE FOR THE CONCENTRATION OF
ANTICONGELANTE ANTIFREEZE
D E S C R I P C I Ó N D E S C R I P C I Ó N
OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION
La presente invención pertenece al campo del análisis de materiales para la determinación de sus propiedades químicas o físicas, y más concretamente al análisis de líquidos refrigerantes y anticongelantes. The present invention belongs to the field of material analysis for the determination of its chemical or physical properties, and more specifically to the analysis of coolants and antifreeze liquids.
El objeto principal de la presente invención es un dispositivo de medida que permite determinar la temperatura y la concentración de anticongelante presente en una disolución, incluso para disoluciones por debajo de 0 °C, avisando mediante una señal de alarma en caso de que dicho anticongelante se encuentre por debajo de un determinado valor. The main object of the present invention is a measuring device that allows to determine the temperature and concentration of antifreeze present in a solution, even for solutions below 0 ° C, warning by means of an alarm signal in case said antifreeze is find below a certain value.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Actualmente, para conocer las características y calidad de un fluido de refrigeración se utiliza, o bien un pesa-glicol, o bien un dispositivo refractómetro, mediante los cuales es posible determinar la temperatura de protección, a partir de la cual el fluido pierde sus propiedades refrigerantes y cambia a fase sólida. Para dosificar los líquidos anticongelantes, las técnicas utilizadas son esencialmente métodos de laboratorio tales como la cromatografía líquida o la electroforesis, difícilmente transportables al lugar de la explotación, y en ningún caso adaptados al hombre de campo, por ejemplo personas encargadas del buen funcionamiento de los motores industriales o de los motores de un parque de automóviles, camiones o autobuses. La composición de un líquido refrigerante exige un grado de concentración de anticongelante concreto, el cual afecta a su densidad. La adulteración del líquido o la deficiente concentración del mismo deben ser conocidas de antemano por el consumidor ya que las consecuencias de utilizar un líquido sin las condiciones adecuadas, pueden ser de gran importancia para el circuito refrigerador. Currently, to know the characteristics and quality of a cooling fluid, either a glycol-weight, or a refractometer device is used, by means of which it is possible to determine the protection temperature, from which the fluid loses its properties refrigerants and changes to solid phase. To dose the antifreeze liquids, the techniques used are essentially laboratory methods such as liquid chromatography or electrophoresis, difficult to transport to the place of exploitation, and in no case adapted to the man in the field, for example people responsible for the proper functioning of the industrial engines or engines of a car, truck or bus park. The composition of a coolant requires a concentration of concrete antifreeze, which affects its density. The adulteration of the liquid or its poor concentration must be known in advance by the consumer since the consequences of using a liquid without the right conditions can be of great importance for the cooling circuit.
Es evidente que actualmente existen en el mercado densímetros y otros aparatos de precisión adaptados para conocer la densidad o grado de concentración de un líquido cualquiera, pero estos aparatos de medición resultan ser muy delicados y costosos. Dichos dispositivos están basados en el principio de "refracción de la luz" en soluciones acuosas, por el cual, cuando aumenta la densidad de un fluido (por ejemplo: cuando se disuelve azúcar en agua), el índice de refracción aumenta proporcionalmente. It is evident that densimeters and other precision devices adapted to know the density or degree of concentration of any liquid currently exist on the market, but these measuring devices turn out to be very delicate and expensive. Such devices are based on the principle of "light refraction" in aqueous solutions, whereby, when the density of a fluid increases (for example: when sugar is dissolved in water), the refractive index increases proportionally.
El problema técnico aquí planteado es que los instrumentos y dispositivos anteriormente citados, basados en fenómenos de refracción, no permiten conocer en tiempo real la concentración exacta de anticongelante presente en una disolución que se encuentre a una temperatura inferior a 0°C, con lo cual no es posible controlar de forma eficiente y precisa procesos de refrigeración desarrollados por debajo de dicha temperatura. The technical problem presented here is that the instruments and devices mentioned above, based on refraction phenomena, do not allow to know in real time the exact concentration of antifreeze present in a solution that is at a temperature below 0 ° C, whereby It is not possible to efficiently and accurately control cooling processes developed below that temperature.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
Mediante la presente invención se resuelve el problema técnico anteriormente planteado proporcionando un dispositivo de medida de la concentración de anticongelante existente en una disolución refrigerante, la cual se encuentra a una temperatura inferior a 0°C, avisando en caso de que dicha disolución pierda sus características ideales de refrigeración, al encontrarse el anticongelante por debajo de un determinado valor. El dispositivo de medida, objeto de la presente invención, destaca fundamentalmente por estar basado en el principio de conductividad eléctrica de soluciones acuosas, por el cual, en todo medio acuoso existe una relación directa entre su temperatura y su conductividad eléctrica, por tanto a mayor temperatura de la disolución refrigerante mayor es su conductividad. A su vez, la conductividad eléctrica es inversamente proporcional a su porcentaje en la disolución, esto es, cuanto mayor es la conductividad de una disolución refrigerante, menor es su concentración de anticongelante. By means of the present invention, the aforementioned technical problem is solved by providing a device for measuring the concentration of antifreeze in a refrigerant solution, which is at a temperature below 0 ° C, warning if the solution loses its characteristics cooling ideals, when the antifreeze is below a certain value. The measuring device, object of the present invention, stands out primarily for being based on the principle of electrical conductivity of aqueous solutions, whereby, in any aqueous medium there is a direct relationship between its temperature and its electrical conductivity, therefore at higher The temperature of the coolant solution is its conductivity. In turn, the electrical conductivity is inversely proportional to its percentage in the solution, that is, the higher the conductivity of a cooling solution, the lower its concentration of antifreeze.
Empleando este principio, el dispositivo de medida objeto de invención es capaz de realizar mediciones de disoluciones refrigerantes con temperaturas negativas, lo cual permite optimizar considerablemente los procesos de control de refrigeración de numerosas aplicaciones industriales, como por ejemplo en la industria cervecera, en los refrigeradores comerciales de cerveza de barril. Using this principle, the measuring device object of the invention is capable of carrying out measurements of refrigerant solutions with negative temperatures, which makes it possible to considerably optimize the refrigeration control processes of numerous industrial applications, such as in the beer industry, in refrigerators draft beer commercials.
Dicho dispositivo de medida, el cual puede ser portátil o instalable, comprende al menos: un sensor de temperatura, preferentemente un termistor NTC, adaptado para medir la temperatura exacta de una disolución refrigerante; un sensor de conductividad eléctrica; un microcontrolador vinculado al sensor de temperatura y al sensor de conductividad eléctrica, adaptado para la gestión y procesamiento de la información obtenida por dichos sensores, y dotado del software necesario para determinar la concentración de anticongelante presente en la disolución refrigerante; una interfaz de usuario, que preferentemente comprende un teclado y una pantalla, mediante la cual es posible calibrar el dispositivo de medida objeto de invención para diferentes disoluciones refrigerantes, y a través de la cual un usuario puede conocer distintos parámetros de la disolución refrigerante; y una fuente de alimentación conectada a la red eléctrica general, que proporciona energía al resto de componentes anteriormente citados. Said measuring device, which can be portable or installable, comprises at least: a temperature sensor, preferably an NTC thermistor, adapted to measure the exact temperature of a cooling solution; an electrical conductivity sensor; a microcontroller linked to the temperature sensor and the electrical conductivity sensor, adapted for the management and processing of the information obtained by said sensors, and equipped with the necessary software to determine the concentration of antifreeze present in the refrigerant solution; a user interface, which preferably comprises a keyboard and a screen, by means of which it is possible to calibrate the measuring device object of the invention for different refrigerant solutions, and through which a user can know different parameters of the refrigerant solution; and a power supply connected to the general power grid, which provides power to the other components mentioned above.
Para los casos en que la disolución refrigerante pierda sus propiedades refrigerantes y el anticongelante disminuya por debajo de un determinado umbral, el cual ha sido previamente establecido mediante la interfaz de usuario, se ha previsto que el dispositivo de medida objeto de invención disponga de unos medios de alarma, que pueden ser luminosos y/o acústicos, mediante los cuales el usuario tiene conocimiento en tiempo real del estado de dicha disolución refrigerante. For cases where the cooling solution loses its properties refrigerants and the antifreeze decrease below a certain threshold, which has been previously established through the user interface, it is provided that the measuring device object of the invention has alarm means, which can be luminous and / or acoustic , whereby the user has real-time knowledge of the state of said refrigerant solution.
Por otra parte, se ha previsto que el microcontrolador disponga preferentemente de un sistema de detección de hielo, para aquellas situaciones en las que la disolución refrigerante supere la temperatura de cambio de fase y se solidifique, lo cual si se deja pasar podría tener fatales consecuencias. On the other hand, it is envisaged that the microcontroller preferably has an ice detection system, for those situations in which the refrigerant solution exceeds the phase change temperature and solidifies, which if allowed to pass could have fatal consequences. .
DESCRIPCIÓN DE LOS DIBUJOS DESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con un ejemplo preferente de realización práctica de la misma, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:
Figura 1.- Muestra una vista esquemática de los elementos que componen el dispositivo de medida objeto de invención Figure 1.- Shows a schematic view of the elements that make up the measuring device object of the invention
REALIZACIÓN PREFERENTE DE LA INVENCIÓN De acuerdo con una realización preferente mostrada en el esquema de la figura 1 , el dispositivo de medida (1 ) de la concentración de anticongelante presente en una disolución refrigerante comprende: PREFERRED EMBODIMENT OF THE INVENTION According to a preferred embodiment shown in the scheme of Figure 1, the measuring device (1) of the concentration of antifreeze present in a refrigerant solution comprises:
- un sensor de temperatura (2) del tipo termistor NTC, el cual presenta un tamaño reducido y proporciona medidas rápidas de temperatura con una alta sensibilidad para un rango de funcionamiento comprendido entre aproximadamente -100°C y 450 °C, - a temperature sensor (2) of the NTC thermistor type, which is small in size and provides rapid temperature measurements with high sensitivity for an operating range between approximately -100 ° C and 450 ° C,
- un sensor de conductividad (3) eléctrica, - an electrical conductivity sensor (3),
- un microcontrolador (4) vinculado al sensor de temperatura (2) y al sensor de conductividad (3) eléctrica, dotado del software necesario para la determinación de la concentración de anticongelante en tanto por ciento respecto de la disolución refrigerante, combinando los datos aportados por ambos sensores (2, 3), - a microcontroller (4) linked to the temperature sensor (2) and the electrical conductivity sensor (3), equipped with the software necessary to determine the concentration of antifreeze as a percentage of the cooling solution, combining the data provided by both sensors (2, 3),
- una interfaz de usuario (5) vinculada al microcontrolador (4), dotado de un teclado (6) y una pantalla (7), mediante la cual es posible calibrar el dispositivo de medida (1 ) para diferentes disoluciones refrigerantes, y a través de la cual un usuario puede conocer distintos parámetros de la disolución, y - a user interface (5) linked to the microcontroller (4), equipped with a keyboard (6) and a screen (7), by means of which it is possible to calibrate the measuring device (1) for different cooling solutions, and through which a user can know different dissolution parameters, and
- una fuente de alimentación (8) que proporciona energía eléctrica al resto de componentes del dispositivo de medida (1 ) objeto de invención. - a power supply (8) that provides electrical power to the other components of the measuring device (1) object of the invention.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201031113A ES2390551B1 (en) | 2010-07-20 | 2010-07-20 | MEASUREMENT DEVICE FOR THE CONCENTRATION OF ANTI-FREEZER |
| ESP201031113 | 2010-07-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2012010736A1 true WO2012010736A1 (en) | 2012-01-26 |
| WO2012010736A4 WO2012010736A4 (en) | 2012-04-12 |
Family
ID=44764177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2011/070532 Ceased WO2012010736A1 (en) | 2010-07-20 | 2011-07-19 | Antifreeze concentration conductivity measuring device |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES2390551B1 (en) |
| WO (1) | WO2012010736A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140102672A1 (en) * | 2012-10-11 | 2014-04-17 | International Business Machines Corporation | Cooling system with automated seasonal freeze protection |
| CN108153208A (en) * | 2018-02-24 | 2018-06-12 | 天津云拓网络科技有限公司 | A kind of antifreeze monitoring system of fire protection pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19649366A1 (en) * | 1996-11-28 | 1998-06-04 | Siemens Automotive Sa | Microsensor for liquid analysis, especially of alcohol-gasoline mixtures |
| US6030839A (en) * | 1997-08-27 | 2000-02-29 | Japan Nuclear Cycle Development Institute | Method for determining sodium concentration in alcohol |
| EP1300677A2 (en) * | 2001-10-02 | 2003-04-09 | Delphi Technologies, Inc. | Engine oil contamination sensor |
| WO2003056304A1 (en) * | 2001-12-21 | 2003-07-10 | Scania Cv Ab (Publ) | Method for analysis and a monitoring device |
| US20040250606A1 (en) * | 2001-10-29 | 2004-12-16 | Stephanus Buttgenbach | Device and method for determining the quality of a medium, particularly of a lubricant and/or coolant |
-
2010
- 2010-07-20 ES ES201031113A patent/ES2390551B1/en active Active
-
2011
- 2011-07-19 WO PCT/ES2011/070532 patent/WO2012010736A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19649366A1 (en) * | 1996-11-28 | 1998-06-04 | Siemens Automotive Sa | Microsensor for liquid analysis, especially of alcohol-gasoline mixtures |
| US6030839A (en) * | 1997-08-27 | 2000-02-29 | Japan Nuclear Cycle Development Institute | Method for determining sodium concentration in alcohol |
| EP1300677A2 (en) * | 2001-10-02 | 2003-04-09 | Delphi Technologies, Inc. | Engine oil contamination sensor |
| US20040250606A1 (en) * | 2001-10-29 | 2004-12-16 | Stephanus Buttgenbach | Device and method for determining the quality of a medium, particularly of a lubricant and/or coolant |
| WO2003056304A1 (en) * | 2001-12-21 | 2003-07-10 | Scania Cv Ab (Publ) | Method for analysis and a monitoring device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140102672A1 (en) * | 2012-10-11 | 2014-04-17 | International Business Machines Corporation | Cooling system with automated seasonal freeze protection |
| US9351431B2 (en) | 2012-10-11 | 2016-05-24 | International Business Machines Corporation | Cooling system with automated seasonal freeze protection |
| US9357682B2 (en) | 2012-10-11 | 2016-05-31 | International Business Machines Corporation | Cooling method with automated seasonal freeze protection |
| CN108153208A (en) * | 2018-02-24 | 2018-06-12 | 天津云拓网络科技有限公司 | A kind of antifreeze monitoring system of fire protection pipeline |
| CN108153208B (en) * | 2018-02-24 | 2024-05-14 | 广州晓网电子科技有限公司 | Fire control pipeline monitoring system that prevents frostbite |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2390551B1 (en) | 2013-10-02 |
| WO2012010736A4 (en) | 2012-04-12 |
| ES2390551A1 (en) | 2012-11-14 |
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