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ES2467065R1 - Thermal flowmeter for liquids - Google Patents

Thermal flowmeter for liquids Download PDF

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Publication number
ES2467065R1
ES2467065R1 ES201201265A ES201201265A ES2467065R1 ES 2467065 R1 ES2467065 R1 ES 2467065R1 ES 201201265 A ES201201265 A ES 201201265A ES 201201265 A ES201201265 A ES 201201265A ES 2467065 R1 ES2467065 R1 ES 2467065R1
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ES
Spain
Prior art keywords
application
state
art
document
date
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.)
Granted
Application number
ES201201265A
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Spanish (es)
Other versions
ES2467065B2 (en
ES2467065A2 (en
Inventor
Alberto Jesus MOLINA CANTERO
F�lix BISCARRI TRIVINO
Miguel Angel LEAL DIAZ
�lvaro Ariel G�MEZ GUTIERREZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad de Sevilla
Original Assignee
Universidad de Sevilla
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Publication date
Application filed by Universidad de Sevilla filed Critical Universidad de Sevilla
Priority to ES201201265A priority Critical patent/ES2467065B2/en
Publication of ES2467065A2 publication Critical patent/ES2467065A2/en
Publication of ES2467065R1 publication Critical patent/ES2467065R1/en
Application granted granted Critical
Publication of ES2467065B2 publication Critical patent/ES2467065B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/688—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

La presente invención tiene por objeto un caudal�metro térmico para fluidos de inserción de bajo coste, compuesto por un cuerpo sensor que incluye un elemento calefactor y varios sensores de medida y por un cuerpo con un método de medida que combina la medida por tiempo de vuelo (TOF) y la medida de la distribución de temperatura en un elemento caliente (medidor calorimétrico), lo que le permite operar en un rango distinto al habitual en este tipo de sensores (mayor de 500 ml/min) y con un error reducido debido al método de la redundancia de medida y a la disminución del error de medida por compensación de la temperatura del fluido.The present invention aims at a thermal flowmeter for low-cost insertion fluids, consisting of a sensor body that includes a heating element and several measurement sensors and a body with a measurement method that combines the measurement by time of flight (TOF) and the measurement of the temperature distribution in a hot element (calorimetric meter), which allows it to operate in a different range than usual in this type of sensors (greater than 500 ml / min) and with a reduced error due to the measurement redundancy method and the decrease of the measurement error by compensation of the fluid temperature.

Claims (2)

OFICINA ESPAÑOLA DE PATENTES Y MARCAS SPANISH OFFICE OF THE PATENTS AND BRAND N.� solicitud: 201201265 Application No.: 201201265 ESPA�A SPAIN Fecha de presentación de la solicitud: 11.12.2012 Date of submission of the application: 11.12.2012 Fecha de prioridad: Priority Date: INFORME SOBRE EL ESTADO DE LA TECNICA REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl. : G01F1/688 (2006.01) G01F1/708 (2006.01) 51 Int. Cl.: G01F1 / 688 (2006.01) G01F1 / 708 (2006.01) DOCUMENTOS RELEVANTES  RELEVANT DOCUMENTS
Categor�a Category
56 Documentos citados Reivindicaciones afectadas 56 Documents cited Claims Affected
A TO
US 6550324 B1 (MAYER FELIX et al.) 22.04.2003, columna 1, línea 44 – columna 5, línea 38; figuras 1-4. 1-3 US 6550324 B1 (MAYER FELIX et al.) 04.24.2003, column 1, line 44 - column 5, line 38; Figures 1-4. 1-3
A TO
US 3438254 A (SEELEY EUGENE B) 15.04.1969, columna 1, línea 20 – columna 6, línea 40; figuras 1-6. 1-3 US 3438254 A (SEELEY EUGENE B) 04/15/1969, column 1, line 20 - column 6, line 40; Figures 1-6. 1-3
A TO
US 2012216629 A1 (HUANG LIJI et al.) 30.08.2012, párrafos [0005]-[0036]; figuras 1-9. 1-3 US 2012 216291 A1 (HUANG LIJI et al.) 30.08.2012, paragraphs [0005] - [0036]; Figures 1-9. 1-3
A TO
US 2012192644 A1 (ASANO SATOSHI et al.) 02.08.2012, párrafos [0009]-[0123]; figuras 1-13. 1-3 US 2012192644 A1 (ASANO SATOSHI et al.) 02.08.2012, paragraphs [0009] - [0123]; Figures 1-13. 1-3
A TO
US 2008271525 A1 (WANG GAOFENG et al.) 06.11.2008, párrafos [0016]-[0042]; figuras 1-12. 1-3 US 2008271525 A1 (WANG GAOFENG et al.) 06.11.2008, paragraphs [0016] - [0042]; Figures 1-12. 1-3
Categor�a de los documentos citados X: de particular relevancia Y: de particular relevancia combinado con otro/s de la misma categoría A: refleja el estado de la técnica O: referido a divulgación no escrita P: publicado entre la fecha de prioridad y la de presentación de la solicitud E: documento anterior, pero publicado después de la fecha de presentación de la solicitud Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the submission of the application E: previous document, but published after the date of submission of the application
El presente informe ha sido realizado • para todas las reivindicaciones • para las reivindicaciones n�: This report has been prepared • for all claims • for claims no:
Fecha de realización del informe 18.06.2014 Date of completion of the report 06.18.2014
Examinador B. Tejedor Miralles Página 1/4 Examiner B. Weaver Miralles Page 1/4
INFORME DEL ESTADO DE LA TÉCNICA REPORT OF THE STATE OF THE TECHNIQUE N� de solicitud: 201201265 Application number: 201201265 Documentaci�n mínima buscada (sistema de clasificación seguido de los símbolos de clasificación) G01F Bases de datos electrónicas consultadas durante la búsqueda (nombre de la base de datos y, si es posible, términos de Minimum documentation sought (classification system followed by classification symbols) G01F Electronic databases consulted during the search (name of the database and, if possible, terms of b�squeda utilizados) INVENES, EPODOC, WPI, bases de texto completo, bases de literatura no patente search used) INVENES, EPODOC, WPI, full text bases, non-patent literature bases Informe del Estado de la Técnica Página 2/4 State of the Art Report Page 2/4 OPINI�N ESCRITA WRITTEN OPINION N� de solicitud: 201201265 Application number: 201201265 Fecha de Realización de la Opinión Escrita: 18.06.2014 Date of Completion of Written Opinion: 06.18.2014 Declaraci�n Statement
Novedad (Art. 6.1 LP 11/1986) Novelty (Art. 6.1 LP 11/1986)
Reivindicaciones Reivindicaciones 1-3 SI NO Claims Claims 1-3 IF NOT
Actividad inventiva (Art. 8.1 LP11/1986) Inventive activity (Art. 8.1 LP11 / 1986)
Reivindicaciones Reivindicaciones 1-3 SI NO Claims Claims 1-3 IF NOT
Se considera que la solicitud cumple con el requisito de aplicación industrial. Este requisito fue evaluado durante la fase de examen formal y técnico de la solicitud (Artículo 31.2 Ley 11/1986). The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986). Base de la Opinión.-  Opinion Base.- La presente opinión se ha realizado sobre la base de la solicitud de patente tal y como se publica. This opinion has been made on the basis of the patent application as published. Informe del Estado de la Técnica Página 3/4 State of the Art Report Page 3/4 OPINI�N ESCRITA WRITTEN OPINION N� de solicitud: 201201265 Application number: 201201265 1. Documentos considerados.-  1. Documents considered.- A continuación se relacionan los documentos pertenecientes al estado de la técnica tomados en consideración para la realización de esta opinión. The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.
Documento Document
Número Publicación o Identificación Fecha Publicación Publication or Identification Number publication date
D01 D01
US 6550324 B1 (MAYER FELIX et al.) 22.04.2003 US 6550324 B1 (MAYER FELIX et al.) 04/22/2003
D02 D02
US 3438254 A (SEELEY EUGENE B) 15.04.1969 US 3438254 A (SEELEY EUGENE B) 04/15/1969
D03 D03
US 2012216629 A1 (HUANG LIJI et al.) 30.08.2012 US 2012 216291 A1 (HUANG LIJI et al.) 30.08.2012
D04 D04
US 2012192644 A1 (ASANO SATOSHI et al.) 02.08.2012 US 2012192644 A1 (ASANO SATOSHI et al.) 02.08.2012
D05 D05
US 2008271525 A1 (WANG GAOFENG et al.) 06.11.2008 US 2008271525 A1 (WANG GAOFENG et al.) 06.11.2008
2. Declaración motivada según los artículos 29.6 y 29.7 del Reglamento de ejecución de la Ley 11/1986, de 20 de marzo, de Patentes sobre la novedad y la actividad inventiva; citas y explicaciones en apoyo de esta declaración  2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement Reivindicaci�n 1: Claim 1: Se considera el documento D01 como estado de la técnica más cercano al objeto de la invención (entre paréntesis las referencias al documento citado). Dicho documento divulga un caudal�metro térmico para líquidos que comprende un bloque sensor formado por dos sensores de temperatura y un calefactor situado entre ellos (D01: fig.1 (4), (5) (6)); y un cuerpo de medida para el control, la adquisición y procesamiento de las señales procedentes del bloque sensor (D01: fig. 2 (17)). Se diferencia en que no divulga el elemento formado por la tubería y los platos de fijación y que no dispone aguas abajo de dos sensores de temperatura más. La primera diferencia se encuentra divulgada en el documento D02 (D02: fig.6, columna 4, líneas 26-43). En cuanto a la segunda diferencia, el efecto técnico que se consigue es poder realizar combinaciones de las señales para disminuir el error en la medida. El problema técnico a resolver es cómo mejorar la precisión y la repetibilidad de las medidas. Sin embargo, no se ha encontrado en el estado de la técnica ningún documento en el que se divulgue el uso de tres sensores de temperatura situados aguas abajo para dicho fin. Por lo tanto, la primera reivindicación presentaría novedad y actividad inventiva según los artículos 6.1 y 8.1 de la ley de patentes 11/1986. Document D01 is considered as the state of the art closest to the object of the invention (in brackets the references to the cited document). Said document discloses a thermal flowmeter for liquids comprising a sensor block formed by two temperature sensors and a heater located between them (D01: fig. 1 (4), (5) (6)); and a measuring body for the control, acquisition and processing of signals from the sensor block (D01: fig. 2 (17)). It differs in that it does not disclose the element formed by the pipe and fixing plates and does not have two more temperature sensors downstream. The first difference is disclosed in document D02 (D02: fig. 6, column 4, lines 26-43). As for the second difference, the technical effect that is achieved is to be able to make combinations of the signals to reduce the error in the measurement. The technical problem to solve is how to improve the accuracy and repeatability of the measurements. However, no document has been found in the state of the art in which the use of three temperature sensors located downstream for that purpose is disclosed. Therefore, the first claim would present novelty and inventive activity according to articles 6.1 and 8.1 of patent law 11/1986. Reivindicaciones dependientes 2-3: Dependent claims 2-3: Las reivindicaciones 2-3 son dependientes de la reivindicación 1 y como ella, también cumplirían los requisitos de la ley de patentes 11/1986 con respecto a la novedad y actividad inventiva. No obstante, las características técnicas de las reivindicaciones dependientes se encuentran divulgadas en los documentos D01 (figura 1, figura 3, columna 3 líneas 14-25), D03 (párrafo [0009] y, D04 (figura 1). Claims 2-3 are dependent on claim 1 and like it, they would also meet the requirements of patent law 11/1986 with respect to novelty and inventive activity. However, the technical characteristics of the dependent claims are disclosed in documents D01 (figure 1, figure 3, column 3 lines 14-25), D03 (paragraph [0009] and, D04 (figure 1). Informe del Estado de la Técnica Página 4/4 State of the Art Report Page 4/4
ES201201265A 2012-12-11 2012-12-11 Thermal flowmeter for liquids Active ES2467065B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES201201265A ES2467065B2 (en) 2012-12-11 2012-12-11 Thermal flowmeter for liquids

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Application Number Priority Date Filing Date Title
ES201201265A ES2467065B2 (en) 2012-12-11 2012-12-11 Thermal flowmeter for liquids

Publications (3)

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ES2467065A2 ES2467065A2 (en) 2014-06-11
ES2467065R1 true ES2467065R1 (en) 2014-06-30
ES2467065B2 ES2467065B2 (en) 2014-10-09

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438254A (en) * 1965-10-19 1969-04-15 United Control Corp Fluid flow detector
US6550324B1 (en) * 1998-12-22 2003-04-22 Sensirion Ag Method and sensor for measuring a mass flow
US20080271525A1 (en) * 2004-02-02 2008-11-06 Gaofeng Wang Micromachined mass flow sensor and methods of making the same
US20120192644A1 (en) * 2011-01-31 2012-08-02 Hitachi Automotive Systems, Ltd. Thermal Flow Sensor
US20120216629A1 (en) * 2011-02-25 2012-08-30 Siargo Ltd. Mems time-of-flight thermal mass flow meter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438254A (en) * 1965-10-19 1969-04-15 United Control Corp Fluid flow detector
US6550324B1 (en) * 1998-12-22 2003-04-22 Sensirion Ag Method and sensor for measuring a mass flow
US20080271525A1 (en) * 2004-02-02 2008-11-06 Gaofeng Wang Micromachined mass flow sensor and methods of making the same
US20120192644A1 (en) * 2011-01-31 2012-08-02 Hitachi Automotive Systems, Ltd. Thermal Flow Sensor
US20120216629A1 (en) * 2011-02-25 2012-08-30 Siargo Ltd. Mems time-of-flight thermal mass flow meter

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ES2467065B2 (en) 2014-10-09
ES2467065A2 (en) 2014-06-11

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