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WO2018116034A1 - Système d'identification et de contrôle de fuites dans des poêles à gaz - Google Patents

Système d'identification et de contrôle de fuites dans des poêles à gaz Download PDF

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Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
stove
knob
master device
temperature
stoves
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.)
Ceased
Application number
PCT/IB2017/057506
Other languages
English (en)
Spanish (es)
Inventor
Mauricio GONZALEZ PALACIO
Mario Alberto LUNA DEL RISCO
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 MEDELLIN
Original Assignee
UNIVERSIDAD DE MEDELLIN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UNIVERSIDAD DE MEDELLIN filed Critical UNIVERSIDAD DE MEDELLIN
Publication of WO2018116034A1 publication Critical patent/WO2018116034A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

La présente invention concerne un système de contrôle de l'alimentation en gaz des brûleurs d'un poêle, en cas de fuite de gaz. Ce système peut être mis en oeuvre et installé dans des poêles déjà existants, effectue la détection de la fuite au moyen de l'identification d'une absence de flamme par la mesure de la température, permet le contrôle indépendant de chacun des brûleurs et maintient la communication sans fil avec une interface d'utilisateur, offrant des informations en temps réel à l'utilisateur associées à l'état de chacun des brûleurs et de chacun des boutons correspondants. Ce système comprend un dispositif maître, un ou plusieurs dispositifs esclaves, un ou plusieurs capteurs de température et une interface d'utilisateur.
PCT/IB2017/057506 2016-12-20 2017-11-29 Système d'identification et de contrôle de fuites dans des poêles à gaz Ceased WO2018116034A1 (fr)

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 (fr) 2018-06-28

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Family Applications (1)

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PCT/IB2017/057506 Ceased WO2018116034A1 (fr) 2016-12-20 2017-11-29 Système d'identification et de contrôle de fuites dans des poêles à gaz

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WO (1) WO2018116034A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018224899A1 (fr) * 2017-06-05 2018-12-13 Universidad De Medellin Système pour la fermeture de boutons de cuisinières et dessus de cuisinières le comprenant
US12332512B1 (en) 2024-07-22 2025-06-17 Whirlpool Corporation Gimbal encoder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1151372A (ja) * 1997-08-05 1999-02-26 Rinnai Corp 回転式ガス弁装置
CA2643957A1 (fr) * 2007-11-16 2009-05-16 Wolfedale Engineering Limited Dispositif et methode de regulation de temperature
CN102767850A (zh) * 2012-08-13 2012-11-07 王永队 家庭燃气灶智能安全控制装置
WO2015118351A1 (fr) * 2014-02-07 2015-08-13 Haven Limited Valve et système permettant de régler un brûleur à gaz

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1151372A (ja) * 1997-08-05 1999-02-26 Rinnai Corp 回転式ガス弁装置
CA2643957A1 (fr) * 2007-11-16 2009-05-16 Wolfedale Engineering Limited Dispositif et methode de regulation de temperature
CN102767850A (zh) * 2012-08-13 2012-11-07 王永队 家庭燃气灶智能安全控制装置
WO2015118351A1 (fr) * 2014-02-07 2015-08-13 Haven Limited Valve et système permettant de régler un brûleur à gaz

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018224899A1 (fr) * 2017-06-05 2018-12-13 Universidad De Medellin Système pour la fermeture de boutons de cuisinières et dessus de cuisinières le comprenant
US12332512B1 (en) 2024-07-22 2025-06-17 Whirlpool Corporation Gimbal encoder

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