WO2018116034A1 - System for identifying and controlling leaks in gas stoves - Google Patents
System for identifying and controlling leaks in gas stoves Download PDFInfo
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- WO2018116034A1 WO2018116034A1 PCT/IB2017/057506 IB2017057506W WO2018116034A1 WO 2018116034 A1 WO2018116034 A1 WO 2018116034A1 IB 2017057506 W IB2017057506 W IB 2017057506W WO 2018116034 A1 WO2018116034 A1 WO 2018116034A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
Definitions
- the present invention belongs to the technical field of control of supplies of household natural gas and propane gas packed in cylinders. Particularly, the invention is related to systems for controlling a gas supply in case of leakage. Even in more detail, the present invention discloses systems for controlling the closing of the gas supply of the stoves of a stove, before a possible leak.
- Patent document CN205102186 discloses a high efficiency stove, which can be monitored and controlled by wireless communication.
- the system is based on the internet of things and intelligence in the cloud. It consists of a microprocessor, a solenoid valve, an electronic ignition system, flame detectors, temperature sensors, leak detectors, alarm and flame protection system.
- the monitoring center includes wireless communication, cloud servers and communication with the mobile terminal.
- the control technology used by this stove cannot be implemented in previously existing stoves.
- the technology in this document uses a leak detector, which generates an alert when there is already a high concentration of natural gas in the environment.
- the technology of this former uses a solenoid valve, which is installed invasively in the gas circuit to enable and disable the supply of gas to the entire stove.
- CN patent 105333464 refers to a stove that implements the concept of the internet of things, which has a solenoid valve and an intelligent control center that contains: a main module, a gas consumption calculation module , a timing module to control the ignition, a leak detector module and a wireless communication module to control the system.
- this technology consists of an already installed stove and cannot be implemented in existing stoves.
- the stove uses a solenoid valve to control the gas supply to the entire stove, which is installed invasively inside the circuit. In this case, the gas leak is detected by a gas detector in the air, which requires a high concentration of natural gas in a confined atmosphere in order to detect the leak.
- the smart gas cooker comprises a module for communicating with the user through a telephone.
- the technology disclosed in this above cannot be installed in existing stoves and uses the determination of a change in gas concentration in the air to detect leaks. In order to detect the leak, this technology requires that the gas concentration in the air be high in order to generate an alert.
- Patent application CN 105258170 discloses a stove and method for controlling it, comprising food temperature sensors, a control terminal, motor knobs and an ignition cooker. This stove and method allow to provide cooking instructions to the system and that it controls combustion. This technology carries out temperature control over food, so that it fails to detect gas leaks immediately.
- Document CN102767850 refers to an intelligent safety control device for a domestic gas cooker.
- the intelligent safety control device comprises a digital control circuit and a control valve.
- the control valve consists of a micro DC deceleration motor, a gear set, a micro switch and a manual control valve body.
- this control device does not use wireless communication to notify the user in case of leakage.
- the present invention discloses a system for the control of the automatic closing of the gas supply of a stove, before a possible leak.
- the system consists of a master device, one or more slave devices, one or more temperature sensors and a user interface.
- the one or more slave devices are installed directly on the knobs that control the opening of the gas supply to each of the stoves of a stove.
- the one or more slave devices indicate the opening of each of the knobs on the cover and perform automatic closing according to the conditions indicated by the master device.
- the master device is responsible for taking measurements, operating the one or more slave devices and carrying out the wireless connection with the user interface. Additionally, the master device allows the detection of absence of flame through temperature measurement, and the determination of the opening state of each of the knobs.
- the system determines leaks by detecting absence of flame through temperature measurement, but not high concentrations of gas in a confined atmosphere.
- the system allows the individual closure of the gas supply to each Stove of a stove, having a slave device in each of the knobs, without the need to use solenoid valves invasively in the gas circuit.
- FIG. 1 Illustrates a general diagram of the invention, which shows each of the stoves of a stove (5) comprising temperature sensors (4), which are connected to the master device (1), which at its Once connected to the slave devices (2) on the stems of the knobs of the stove and wirelessly to a user interface (3).
- FIG. 2 Illustrates the slave device (2), which is installed in each of the knobs of a stove.
- Figure 3 Illustrates the cover of a stove in which the slave device (2) has been installed on one of the knob stems and indicates the exploded view of the slave device (2).
- the present invention relates to a system for the control of automatic and / or assisted closing of the gas supply of a stove, in case of a possible leak.
- the system comprises a master device (1), one or more slave devices to be installed on the knobs of a stove (2) and a user interface (3), as exemplified in Figure 1.
- the slave device comprises a motor (8) and a mechanism (9 and 10) that is coupled to the knob rod of each stove in a stove. Additionally, the slave device (2) has an opening sensor (11) on each knob (6), which sends a signal to the master device (1), indicating if the knob (6) is open or closed. Similarly, the slave device (2) receives from the master device (1) the motor energization order to close the knob (6), if necessary.
- the opening sensor is an end-of-stroke sensor that is mechanically coupled to the slave device (2). In this preferred mode, when the knob is opened, the signal that is sent to the master device (1) is carried out by a normally open contact.
- FIGs 2 and 3 a preferred embodiment of the slave device (2) and the manner in which it is installed in the knobs of a stove knobs is illustrated. Particularly in Figure 2, the different elements that make up the slave device (2) are illustrated, which are: a knob (6), a light emitting diode (7), a motor (8), a cover gear (9), a motor pinion (10) and a limit switch sensor (11).
- the knob (6) serves as protection for the internal mechanism against moisture and allows the manual operation of the stove.
- the light emitting diode (7) indicates to the user when the knob is open.
- the engine (8) generates the rotary movement to close the gas supply if required, upon prior order from the master device.
- the motor pinion (10) is coupled to the motor shaft to increase the torque in conjunction with the cover gear (9).
- the limit switch (11) indicates to the master device when the knob is open (allowing the passage of gas) or closed (preventing the passage of gas).
- the cover gear (9) and the motor pinion (10) are mechanically coupled to the motor (8) when the system is energized by the master device (1) to perform the automatic and / or assisted closing process.
- the motor (8) is mechanically decoupled from the rod, thereby preventing engine wear from everyday use.
- the one or more slave devices (2) are installed superficially, non-invasively on each rod of the knobs. This allows the system to be installed in any existing stove and the closing of each knob can be carried out individually.
- the master device (1) comprises a processor, which performs the processing of the measured variables and executes the control strategy for each stove (5).
- the master device (1) is connected to a sensor of temperature (4) and the opening sensor (11) in each of the stoves (5) of the stove.
- the temperature sensor (4) is a thermocouple.
- the thermocouple is a wired screw type thermocouple.
- the master device comprises analog inputs, by means of which it is connected to the temperature sensor (4) in each of the stoves (5) of the stove.
- the master device processor (1) executes the control strategy, carrying out the following methodology:
- the master device (1) manages to identify the absence of flame.
- the knob (6) When the knob (6) is open, it is expected that there will be an increase in temperature in the presence of flame. However, if the temperature does not increase while the knob (6) is open, it is because there is no flame burning in the stove and therefore there is a leak.
- the methodology carried out by the processor of the master device (1) allows to determine that when an increase in temperature does not occur in a stove, the knob is open, thus determining the occurrence of a gas leak. This methodology allows to identify leaks, before the gas concentration reaches very high levels that can lead to serious safety problems.
- the system may additionally comprise a database server in the cloud to carry out the recording of events that generate alarm. So the master device (1) can optionally send a notification to the database server in the cloud in case of an alarm.
- the master device (1) can also send the temperature data to the server with a certain frequency, when these are above the alarm value, indicating that there is a flame.
- the master device (1) can also send a notice to the database server, indicating when each knob is open.
- This functionality is used for parental control, preventing unauthorized persons (children for example) from operating the cooking deck.
- the master device comprises a counter for hours of use per stove, which anonymously sends said information to the server.
- the user interface (3) sends the timer programming of the closing of the knobs (6) to the database server.
- the database server sends the master device (1) the order to start a timed closing process, together with the respective time and the number of the stove (5). Once the time elapses, the master device (1) sends the closed signal to the slave device (2) on the corresponding knob (6).
- the master device (1) is installed in the lower part of the cover under controlled conditions of temperature and relative humidity.
- the master device (1) is in wireless communication with the user interface (3). When any of the knobs (6) has been activated, the master device (1) sends a signal to the interface (3), which shows the user a notification.
- the user can set the coordinates of the installation point on the stove cover, so that the distance between the user and the stove can be calculated.
- a notification is generated and the possibility of remote closing of the corresponding knob (6) is provided.
- the interface (3) also allows timed control of each knob (6), making it easier to cook some foods.
- the interface (3) allows the user to visualize the flame temperature of each stove (5), from a signal sent from the master device (1).
- the user can be notified about hours of operation related to maintenance service offers.
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- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
SISTEMA PARA LA IDENTIFICACIÓN Y EL CONTROL DE FUGAS EN SYSTEM FOR IDENTIFICATION AND LEAK CONTROL
ESTUFAS DE GAS GAS STOVES
CAMPO DE LA INVENCIÓN FIELD OF THE INVENTION
La presente invención pertenece al campo técnico del control de suministros de gas natural domiciliario y gas propano envasado en cilindros. Particularmente, la invención se encuentra relacionada con sistemas para controlar un suministro de gas en caso de fuga. Aún con más detalle, la presente invención divulga sistemas para controlar el cerrado del suministro de gas de los fogones de una estufa, ante una posible fuga. The present invention belongs to the technical field of control of supplies of household natural gas and propane gas packed in cylinders. Particularly, the invention is related to systems for controlling a gas supply in case of leakage. Even in more detail, the present invention discloses systems for controlling the closing of the gas supply of the stoves of a stove, before a possible leak.
DESCRIPCIÓN DEL ESTADO DE LA TÉCNICA DESCRIPTION OF THE STATE OF THE TECHNIQUE
En el estado de la técnica ya se encuentran reportadas diferentes tecnologías para prevenir la fuga de gas en estufas, mediante el control del suministro de gas, como se puede apreciar a continuación. Different technologies are already reported in the state of the art to prevent gas leakage in stoves, by controlling the gas supply, as can be seen below.
El documento de patente CN205102186 divulga una estufa de alta eficiencia, la cual puede ser monitoreada y controlada por comunicación inalámbrica. El sistema está basado en el internet de las cosas e inteligencia en la nube. El mismo está compuesto por un microprocesador, una válvula solenoide, un sistema de encendido electrónico, detectores de llama, sensores de temperatura, detectores de fugas, alarma y sistema de protección de llama. El centro de monitoreo incluye comunicación inalámbrica, servidores en la nube y comunicación con la terminal móvil. Sin embargo, la tecnología de control empleada por esta estufa no puede ser implementada en estufas existentes previamente. Adicionalmente, la tecnología de este documento utiliza un detector de fugas, el cual genera una alerta cuando ya existe una alta concentración de gas natural en el ambiente. Más aun, la tecnología de esta anterioridad utiliza una válvula solenoide, la cual se instala de forma invasiva en el circuito de gas para habilitar y deshabilitar el suministro de gas a toda la estufa. Por otro lado, la patente CN 105333464 se refiere a una estufa que implementa el concepto de internet de las cosas, que cuenta con una válvula solenoide y un centro de control inteligente que contiene: un módulo principal, un módulo de cálculo de consumo de gas, un módulo de cronometraje para controlar la ignición, un módulo detector de fugas y un módulo de comunicación inalámbrica para controlar el sistema. Sin embargo, esta tecnología consiste en una estufa ya instalada y no se puede implementar en estufas ya existentes. La estufa emplea una válvula solenoide para realizar el control del suministro de gas a toda la estufa, la cual se encuentra instalada de forma invasiva dentro del circuito. En esta anterioridad, la fuga de gas es detectada mediante un detector de gas en el aire, el cual requiere que exista una concentración elevada de gas natural en una atmósfera confinada para poder detectar la fuga . Patent document CN205102186 discloses a high efficiency stove, which can be monitored and controlled by wireless communication. The system is based on the internet of things and intelligence in the cloud. It consists of a microprocessor, a solenoid valve, an electronic ignition system, flame detectors, temperature sensors, leak detectors, alarm and flame protection system. The monitoring center includes wireless communication, cloud servers and communication with the mobile terminal. However, the control technology used by this stove cannot be implemented in previously existing stoves. Additionally, the technology in this document uses a leak detector, which generates an alert when there is already a high concentration of natural gas in the environment. Moreover, the technology of this former uses a solenoid valve, which is installed invasively in the gas circuit to enable and disable the supply of gas to the entire stove. On the other hand, CN patent 105333464 refers to a stove that implements the concept of the internet of things, which has a solenoid valve and an intelligent control center that contains: a main module, a gas consumption calculation module , a timing module to control the ignition, a leak detector module and a wireless communication module to control the system. However, this technology consists of an already installed stove and cannot be implemented in existing stoves. The stove uses a solenoid valve to control the gas supply to the entire stove, which is installed invasively inside the circuit. In this case, the gas leak is detected by a gas detector in the air, which requires a high concentration of natural gas in a confined atmosphere in order to detect the leak.
En cuanto al documento CN 101706113, el mismo da a conocer una cocina de gas inteligente, que resuelve los problemas del bajo grado de control inteligente, la falta de seguridad y la gran ocupación de la cocina de gas convencional. La cocina de gas inteligente comprende un módulo de comunicación con el usuario a través de un teléfono. Igualmente, la tecnología divulgada en esta anterioridad no puede ser instalada en estufas ya existentes y emplea la determinación de cambio de concentración de gas en el aire para detectar fugas. Para poder detectar la fuga, esta tecnología requiere que la concentración del gas en el aire sea elevada para poder generar una alerta . As for document CN 101706113, it discloses an intelligent gas cooker, which solves the problems of the low degree of intelligent control, the lack of security and the great occupation of the conventional gas cooker. The smart gas cooker comprises a module for communicating with the user through a telephone. Likewise, the technology disclosed in this above cannot be installed in existing stoves and uses the determination of a change in gas concentration in the air to detect leaks. In order to detect the leak, this technology requires that the gas concentration in the air be high in order to generate an alert.
La solicitud de patente CN 105258170 divulga una estufa y método para controlarla, que comprende sensores de temperatura de comida, una terminal de control, perillas de motor y un fogón de encendido. Esta estufa y método permiten brindar instrucciones de cocción al sistema y que este controle la combustión. Esta tecnología lleva a cabo control de temperatura sobre los alimentos, de manera que no logra detectar fugas de gas de manera inmediata. Patent application CN 105258170 discloses a stove and method for controlling it, comprising food temperature sensors, a control terminal, motor knobs and an ignition cooker. This stove and method allow to provide cooking instructions to the system and that it controls combustion. This technology carries out temperature control over food, so that it fails to detect gas leaks immediately.
El documento CN102767850 se refiere a un dispositivo de control de seguridad inteligente para una cocina doméstica de gas. El dispositivo de control inteligente de seguridad comprende un circuito de control digital y una válvula de control. La válvula de control se compone de un motor de corriente continua de micro desaceleración, un conjunto de engranajes, un micro interruptor y un cuerpo de válvula de control manual. Sin embargo, este dispositivo de control no utiliza comunicación inalámbrica para notificar al usuario en caso de fuga. Document CN102767850 refers to an intelligent safety control device for a domestic gas cooker. The intelligent safety control device comprises a digital control circuit and a control valve. The control valve consists of a micro DC deceleration motor, a gear set, a micro switch and a manual control valve body. However, this control device does not use wireless communication to notify the user in case of leakage.
De manera que aunque ya existen estufas que comprenden tecnologías para el control de fugas y dispositivos para este mismo fin, no existe aún un sistema que pueda ser implementado e instalado en estufas ya existentes, que logre detectar las fugas de gas antes que se alcance una concentración elevada (lo cual genera una atmósfera explosiva), que también logre cerrar el suministro de gas en cada uno de los fogones de forma individual y que envíe una señal de alerta vía inalámbrica a una interfaz de usuario, desde donde el mismo puede enviar la instrucción de cierre de los fogones. Es precisamente lo anterior lo que la presente invención desea solucionar. So although there are already stoves that include technologies for the control of leaks and devices for this same purpose, there is not yet a system that can be implemented and installed in existing stoves, which manages to detect gas leaks before reaching a high concentration (which generates an explosive atmosphere), which also manages to close the gas supply in each of the stoves individually and sends an alert signal via wireless to a user interface, from where it can send the stove closing instruction. It is precisely the foregoing that the present invention wishes to solve.
DESCRIPCIÓN GENERAL DE LA INVENCIÓN GENERAL DESCRIPTION OF THE INVENTION
La presente invención divulga un sistema para el control del cerrado automático del suministro de gas de una estufa, ante una posible fuga. El sistema se compone de un dispositivo maestro, uno o más dispositivos esclavos, uno o más sensores de temperatura y una interfaz de usuario. El uno o más dispositivos esclavos se instalan directamente sobre las perillas que controlan la apertura del suministro de gas a cada uno de los fogones de una estufa. El uno o más dispositivos esclavos indican la apertura de cada una de las perillas en la cubierta y realizan el cerrado automático de acuerdo con las condiciones indicadas por el dispositivo maestro. El dispositivo maestro se encarga de realizar mediciones, operar el uno o más dispositivos esclavos y llevar a cabo la conexión inalámbrica con la interfaz de usuario. Adicionalmente, el dispositivo maestro permite la detección de ausencia de llama a través de la medición de temperatura, y la determinación del estado de apertura de cada una de las perillas. The present invention discloses a system for the control of the automatic closing of the gas supply of a stove, before a possible leak. The system consists of a master device, one or more slave devices, one or more temperature sensors and a user interface. The one or more slave devices are installed directly on the knobs that control the opening of the gas supply to each of the stoves of a stove. The one or more slave devices indicate the opening of each of the knobs on the cover and perform automatic closing according to the conditions indicated by the master device. The master device is responsible for taking measurements, operating the one or more slave devices and carrying out the wireless connection with the user interface. Additionally, the master device allows the detection of absence of flame through temperature measurement, and the determination of the opening state of each of the knobs.
Todos los elementos que componen el sistema son compactos y modulares, lo que permite que el mismo pueda ser instalado en cualquier cubierta de cocción. Adicionalmente, el sistema desarrollado determina las fugas mediante la detección de ausencia de llama a través de medición de temperatura, más no de concentraciones elevadas de gas en una atmósfera confinada . Además, el sistema permite realizar el cerrado individual del suministro de gas a cada fogón de una estufa, al haber un dispositivo esclavo en cada una de las perillas, sin la necesidad de emplear válvulas tipo solenoide de forma invasiva en el circuito de gas. All the elements that make up the system are compact and modular, which allows it to be installed on any cooking deck. Additionally, the system developed determines leaks by detecting absence of flame through temperature measurement, but not high concentrations of gas in a confined atmosphere. In addition, the system allows the individual closure of the gas supply to each Stove of a stove, having a slave device in each of the knobs, without the need to use solenoid valves invasively in the gas circuit.
BREVE DESCRIPCIÓN DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
Figura 1 - Ilustra un diagrama general de la invención, el cual enseña cada uno de los fogones de una estufa (5) que comprenden sensores de temperatura (4), los cuales se encuentran conectados al dispositivo maestro (1), el cual a su vez se conecta a los dispositivos esclavos (2) en los vástagos de las perillas de la estufa y de forma inalámbrica a una interfaz de usuario (3). Figure 1 - Illustrates a general diagram of the invention, which shows each of the stoves of a stove (5) comprising temperature sensors (4), which are connected to the master device (1), which at its Once connected to the slave devices (2) on the stems of the knobs of the stove and wirelessly to a user interface (3).
Figura 2 - Ilustra el dispositivo esclavo (2), el cual es instalado en cada una de los vástagos de las perillas de una estufa . Figure 2 - Illustrates the slave device (2), which is installed in each of the knobs of a stove.
Figura 3 - Ilustra la cubierta de una estufa en la que se ha instalado el dispositivo esclavo (2) sobre uno de los vástagos de las perillas e indica el despiece del dispositivo esclavo (2). Figure 3 - Illustrates the cover of a stove in which the slave device (2) has been installed on one of the knob stems and indicates the exploded view of the slave device (2).
DESCRIPCIÓN DETALLADA DE LA INVENCIÓN DETAILED DESCRIPTION OF THE INVENTION
La presente invención se refiere a un sistema para el control del cerrado automático y/o asistido del suministro de gas de una estufa, ante una posible fuga . El sistema comprende un dispositivo maestro (1), uno o más dispositivos esclavos para instalarse sobre las perillas de una estufa (2) y una interfaz de usuario (3), como se ejemplifica en la Figura 1. The present invention relates to a system for the control of automatic and / or assisted closing of the gas supply of a stove, in case of a possible leak. The system comprises a master device (1), one or more slave devices to be installed on the knobs of a stove (2) and a user interface (3), as exemplified in Figure 1.
El dispositivo esclavo comprende un motor (8) y un mecanismo (9 y 10) que se acopla al vástago de la perilla de cada fogón de una estufa. Adicionalmente, el dispositivo esclavo (2) cuenta con un sensor de apertura (11) en cada perilla (6), el cual envía una señal al dispositivo maestro (1), indicando si la perilla (6) está abierta o cerrada. De manera similar, el dispositivo esclavo (2) recibe desde el dispositivo maestro ( 1) la orden de energización del motor para efectuar el cerrado de la perilla (6), en caso de ser necesario. En una modalidad preferente de la invención, el sensor de apertura es un sensor de fin de carrera que se encuentra acoplado mecánicamente al dispositivo esclavo (2) . En esta modalidad preferida, cuando la perilla se abre, la señal que es enviada al dispositivo maestro ( 1) se lleva a cabo mediante un contacto normalmente abierto. The slave device comprises a motor (8) and a mechanism (9 and 10) that is coupled to the knob rod of each stove in a stove. Additionally, the slave device (2) has an opening sensor (11) on each knob (6), which sends a signal to the master device (1), indicating if the knob (6) is open or closed. Similarly, the slave device (2) receives from the master device (1) the motor energization order to close the knob (6), if necessary. In a preferred embodiment of the invention, the opening sensor is an end-of-stroke sensor that is mechanically coupled to the slave device (2). In this preferred mode, when the knob is opened, the signal that is sent to the master device (1) is carried out by a normally open contact.
En las Figuras 2 y 3, se ilustra una modalidad preferente del dispositivo esclavo (2) y la forma en la que el mismo se instala en los vástagos de las perillas de una estufa. Particularmente en la Figura 2, se ilustran los diferentes elementos que conforman el dispositivo esclavo (2), los cuales son : una perilla (6), un diodo emisor de luz (7), un motor (8), un engranaje de la cubierta (9), un piñón motor (10) y un sensor de final de carrera (11). La perilla (6) sirve como protección para el mecanismo interno ante la humedad y permite la operación manual del fogón. El diodo emisor de luz (7) indica al usuario cuándo la perilla se encuentra abierta. El motor (8) genera el movimiento rotatorio para cerrar el suministro de gas en caso de requerirse, previa orden del dispositivo maestro. El piñón motor (10) se acopla al eje del motor para aumentar el torque en conjunto con el engranaje de la cubierta (9). El sensor de final de carrera ( 11) indica al dispositivo maestro cuándo la perilla está abierta (permitiendo el paso de gas) o cerrada (impidiendo el paso de gas) . El engranaje de la cubierta (9) y el piñón motor (10) solamente se acoplan mecánicamente al motor (8) cuando el sistema es energizado por el dispositivo maestro (1) para realizar el proceso de cierre automático y/o asistido. Cuando el dispositivo esclavo (2) se opera manualmente por el usuario, el motor (8) se encuentra desacoplado mecánicamente del vástago, evitando con esto el desgaste del motor por el uso cotidiano. In Figures 2 and 3, a preferred embodiment of the slave device (2) and the manner in which it is installed in the knobs of a stove knobs is illustrated. Particularly in Figure 2, the different elements that make up the slave device (2) are illustrated, which are: a knob (6), a light emitting diode (7), a motor (8), a cover gear (9), a motor pinion (10) and a limit switch sensor (11). The knob (6) serves as protection for the internal mechanism against moisture and allows the manual operation of the stove. The light emitting diode (7) indicates to the user when the knob is open. The engine (8) generates the rotary movement to close the gas supply if required, upon prior order from the master device. The motor pinion (10) is coupled to the motor shaft to increase the torque in conjunction with the cover gear (9). The limit switch (11) indicates to the master device when the knob is open (allowing the passage of gas) or closed (preventing the passage of gas). The cover gear (9) and the motor pinion (10) are mechanically coupled to the motor (8) when the system is energized by the master device (1) to perform the automatic and / or assisted closing process. When the slave device (2) is operated manually by the user, the motor (8) is mechanically decoupled from the rod, thereby preventing engine wear from everyday use.
El uno o más dispositivos esclavos (2) se instalan de manera superficial, no invasiva sobre cada vástago de las perillas. Esto permite que el sistema pueda ser instalado en cualquier estufa ya existente y que se pueda llevar a cabo el cerrado de cada una de las perillas, de forma individual. The one or more slave devices (2) are installed superficially, non-invasively on each rod of the knobs. This allows the system to be installed in any existing stove and the closing of each knob can be carried out individually.
El dispositivo maestro ( 1) comprende un procesador, el cual realiza el procesamiento de las variables medidas y ejecuta la estrategia de control por cada fogón (5). El dispositivo maestro (1) se encuentra conectado a un sensor de temperatura (4) y al sensor de apertura (11) en cada uno de los fogones (5) de la estufa. The master device (1) comprises a processor, which performs the processing of the measured variables and executes the control strategy for each stove (5). The master device (1) is connected to a sensor of temperature (4) and the opening sensor (11) in each of the stoves (5) of the stove.
En una modalidad preferente de la invención, el sensor de temperatura (4) es un termopar. En una modalidad aún más preferida, el termopar es un termopar tipo tornillo alambrado. In a preferred embodiment of the invention, the temperature sensor (4) is a thermocouple. In an even more preferred embodiment, the thermocouple is a wired screw type thermocouple.
En una modalidad preferente de la invención, el dispositivo maestro comprende entradas analógicas, mediante las cuales se conecta al sensor de temperatura (4) en cada uno de los fogones (5) de la estufa. In a preferred embodiment of the invention, the master device comprises analog inputs, by means of which it is connected to the temperature sensor (4) in each of the stoves (5) of the stove.
El procesador del dispositivo maestro (1) ejecuta la estrategia de control, llevando a cabo la siguiente metodología : The master device processor (1) executes the control strategy, carrying out the following methodology:
1. Leer la temperatura reportada por el sensor de temperatura (4) en cada uno de los fogones (5) de la estufa; 1. Read the temperature reported by the temperature sensor (4) in each of the stoves (5) of the stove;
2. Leer el estado (abierto o cerrado) de cada una de las perillas (6) de la estufa; 2. Read the status (open or closed) of each of the knobs (6) of the stove;
3. Cuando se determine que la perilla (6) esté abierta, iniciar un retardo parametrizable para detectar cambios de temperatura ; 3. When it is determined that the knob (6) is open, initiate a parameterizable delay to detect temperature changes;
4. Cuando el tiempo de retardo transcurre, comparar el valor leído de temperatura versus un valor (parametrizable por el proveedor) de alarma alta previamente establecido; 4. When the delay time elapses, compare the read temperature value versus a previously set high value (parameterizable by the supplier);
5. Si la temperatura leída es inferior al nivel de alarma fijado, enviar desde el dispositivo maestro (1) al dispositivo esclavo (2) una orden de cerrado. 5. If the temperature read is below the set alarm level, send a close command from the master device (1) to the slave device (2).
Mediante esta metodología, el dispositivo maestro (1) logra identificar la ausencia de llama. Cuando la perilla (6) está abierta, se espera que haya un incremento en la temperatura en presencia de llama . Sin embargo, si no aumenta la temperatura mientras la perilla (6) está abierta, es porque no hay una llama encendida en el fogón y por consiguiente existe una fuga. La metodología llevada a cabo por el procesador del dispositivo maestro (1) permite determinar que cuándo no ocurre un incremento en la temperatura en un fogón, la perilla está abierta, determinando así la ocurrencia de una fuga de gas. Esta metodología permite identificar fugas, antes que la concentración de gas alcance niveles muy elevados que pueden acarrear serios problemas de seguridad. Through this methodology, the master device (1) manages to identify the absence of flame. When the knob (6) is open, it is expected that there will be an increase in temperature in the presence of flame. However, if the temperature does not increase while the knob (6) is open, it is because there is no flame burning in the stove and therefore there is a leak. The methodology carried out by the processor of the master device (1) allows to determine that when an increase in temperature does not occur in a stove, the knob is open, thus determining the occurrence of a gas leak. This methodology allows to identify leaks, before the gas concentration reaches very high levels that can lead to serious safety problems.
En una modalidad preferente de la invención, el sistema puede comprender adicionalmente un servidor de base de datos en la nube para llevar a cabo el registro de eventos que generen alarma. De manera que el dispositivo maestro (1), de forma opcional, puede enviar una notificación al servidor de base de datos en la nube en caso de alarma . In a preferred embodiment of the invention, the system may additionally comprise a database server in the cloud to carry out the recording of events that generate alarm. So the master device (1) can optionally send a notification to the database server in the cloud in case of an alarm.
Opcionalmente, el dispositivo maestro (1) puede también enviar al servidor los datos de temperatura con una frecuencia determinada, cuando estos están por encima del valor de alarma, indicando que hay llama. Optionally, the master device (1) can also send the temperature data to the server with a certain frequency, when these are above the alarm value, indicating that there is a flame.
Opcionalmente, el dispositivo maestro (1) puede también enviar un aviso al servidor de base de datos, indicando cuándo cada perilla está abierta. Esta funcionalidad se usa para control parental, evitando que personas no autorizadas (niños por ejemplo) operen la cubierta de cocción. Optionally, the master device (1) can also send a notice to the database server, indicating when each knob is open. This functionality is used for parental control, preventing unauthorized persons (children for example) from operating the cooking deck.
En otra modalidad de la invención, el dispositivo maestro comprende un contador de horas de uso por fogón, que envía de manera anónima dicha información al servidor. In another embodiment of the invention, the master device comprises a counter for hours of use per stove, which anonymously sends said information to the server.
Opcionalmente, la interfaz de usuario (3) envía al servidor de bases de datos la programación de temporización del cerrado de las perillas (6). El servidor de bases de datos envía al dispositivo maestro ( 1) la orden de comenzar un proceso de cerrado temporizado, junto con el tiempo respectivo y el número del fogón (5). Una vez el tiempo transcurre, el dispositivo maestro (1) envía la señal de cerrado al dispositivo esclavo (2) en la perilla (6) correspondiente. Optionally, the user interface (3) sends the timer programming of the closing of the knobs (6) to the database server. The database server sends the master device (1) the order to start a timed closing process, together with the respective time and the number of the stove (5). Once the time elapses, the master device (1) sends the closed signal to the slave device (2) on the corresponding knob (6).
En una modalidad de la invención, el dispositivo maestro (1) se instala en la parte inferior de la cubierta en condiciones controladas de temperatura y humedad relativa . In one embodiment of the invention, the master device (1) is installed in the lower part of the cover under controlled conditions of temperature and relative humidity.
El dispositivo maestro (1) se encuentra en comunicación inalámbrica con la interfaz de usuario (3). Cuando alguna de las perillas (6) ha sido accionada, el dispositivo maestro (1) envía una señal a la interfaz (3), la cual muestra al usuario una notificación. The master device (1) is in wireless communication with the user interface (3). When any of the knobs (6) has been activated, the master device (1) sends a signal to the interface (3), which shows the user a notification.
En la interfaz de usuario (3), el usuario puede fijar las coordenadas del punto de instalación en la cubierta de la estufa, de manera que se puede calcular la distancia entre el usuario y la estufa. Cuando existe una distancia superior a una distancia inicialmente parametrizada y se detecta apertura de uno o varios fogones, se genera una notificación y se brinda la posibilidad de cierre remoto de la perilla (6) correspondiente. In the user interface (3), the user can set the coordinates of the installation point on the stove cover, so that the distance between the user and the stove can be calculated. When there is a distance greater than an initially parameterized distance and one or more stoves are opened, a notification is generated and the possibility of remote closing of the corresponding knob (6) is provided.
La interfaz (3) permite también realizar control temporizado de cada perilla (6), facilitando la cocción de algunos alimentos. The interface (3) also allows timed control of each knob (6), making it easier to cook some foods.
Más aún, la interfaz (3) permite al usuario visualizar la temperatura de llama de cada fogón (5), a partir de una señal enviada desde el dispositivo maestro (1). Moreover, the interface (3) allows the user to visualize the flame temperature of each stove (5), from a signal sent from the master device (1).
Por medio de la interfaz (3), de forma opcional, se puede notificar al usuario acerca de horarios de operación relacionadas con ofertas de servicios de mantenimiento. Via the interface (3), optionally, the user can be notified about hours of operation related to maintenance service offers.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CONC2016/0005547 | 2016-12-20 | ||
| CO2016005547 | 2016-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018116034A1 true WO2018116034A1 (en) | 2018-06-28 |
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ID=62625986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2017/057506 Ceased WO2018116034A1 (en) | 2016-12-20 | 2017-11-29 | System for identifying and controlling leaks in gas stoves |
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| Country | Link |
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| WO (1) | WO2018116034A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018224899A1 (en) * | 2017-06-05 | 2018-12-13 | Universidad De Medellin | System for turning off stove knobs, and cooktops comprising same |
| US12332512B1 (en) | 2024-07-22 | 2025-06-17 | Whirlpool Corporation | Gimbal encoder |
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| CA2643957A1 (en) * | 2007-11-16 | 2009-05-16 | Wolfedale Engineering Limited | Temperature control device and method |
| CN102767850A (en) * | 2012-08-13 | 2012-11-07 | 王永队 | Intelligent safety control device for household gas cooker |
| WO2015118351A1 (en) * | 2014-02-07 | 2015-08-13 | Haven Limited | Valve and System for Controlling a Gas Burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1151372A (en) * | 1997-08-05 | 1999-02-26 | Rinnai Corp | Rotary gas-valve device |
| CA2643957A1 (en) * | 2007-11-16 | 2009-05-16 | Wolfedale Engineering Limited | Temperature control device and method |
| CN102767850A (en) * | 2012-08-13 | 2012-11-07 | 王永队 | Intelligent safety control device for household gas cooker |
| WO2015118351A1 (en) * | 2014-02-07 | 2015-08-13 | Haven Limited | Valve and System for Controlling a Gas Burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018224899A1 (en) * | 2017-06-05 | 2018-12-13 | Universidad De Medellin | System for turning off stove knobs, and cooktops comprising same |
| US12332512B1 (en) | 2024-07-22 | 2025-06-17 | Whirlpool Corporation | Gimbal encoder |
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