WO2024107087A1 - Brûleur à gaz - Google Patents

Brûleur à gaz Download PDF

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Publication number
WO2024107087A1
WO2024107087A1 PCT/RU2023/050266 RU2023050266W WO2024107087A1 WO 2024107087 A1 WO2024107087 A1 WO 2024107087A1 RU 2023050266 W RU2023050266 W RU 2023050266W WO 2024107087 A1 WO2024107087 A1 WO 2024107087A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
rod
temperature sensor
burner
gas burner
Prior art date
Application number
PCT/RU2023/050266
Other languages
English (en)
Russian (ru)
Inventor
Андрей Васильевич ГАЛАК
Original Assignee
Андрей Васильевич ГАЛАК
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
Priority claimed from RU2022129942A external-priority patent/RU2797620C1/ru
Application filed by Андрей Васильевич ГАЛАК filed Critical Андрей Васильевич ГАЛАК
Publication of WO2024107087A1 publication Critical patent/WO2024107087A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices

Definitions

  • the invention relates to the field of household gas appliances, in particular stoves operating on both liquefied and natural gaseous fuels, the oven burners and table burners of which are equipped with flame control devices that ensure automatic shutdown of the gas supply if the burner flame goes out.
  • the disadvantages of known technical solutions include the low consumer and operational properties of gas burners: low reliability of the automatic safety system due to the complexity of its design, redundancy of components and parts; inconvenience of operation when igniting a gas burner device, difficulty in upgrading existing equipment, and the need to power the protective device.
  • the working part of the control electrode is made with a diameter of 1.5-3 mm and ends with a pointed tip with an angle from 30° to 60°, and a time-setting capacitance is introduced into the electronic amplifier circuit, which provides a delay in turning off the gas when the flame goes out, and an alarm for the operation of the shutdown device.
  • Disadvantages complexity of the design, the need for power supply, the presence of electronic components in the design.
  • thermocouple The disadvantages of the known method of monitoring the presence of a flame with a thermocouple and the known device are its inertia and low reliability, since the EMF (10...30 mV) generated by the thermocouple is limited and to reliably hold the solenoid valve it is necessary to accurately install the end of the thermocouple (hot junction) into the working flame zone, which is difficult to do with changes in flame height that occur with fluctuations in gas pressure in the system and adjustment of the gas supply, while it is necessary to ensure low transition resistances between the thermocouple and the holding coil, which can change during the oxidation of materials, sharply reducing the holding force of the coil, which leads to false alarms of the safety device and malfunction of the gas stove oven.
  • thermocouple leads to the fact that for stable operation of the burner, the consumer needs to hold the magnetic plug using a button for some time, up to 30 seconds, after ignition of the gas, which significantly reduces the consumer properties of gas equipment.
  • the delay in turning off the gas after the flame goes out can be up to 90 s, which leads to some gas pollution in the oven and the room, and the absence of an alarm about the operation of the device requires additional visual monitoring of the operation of the gas stove and the presence of the flame.
  • thermocouple is not capable of generating sufficient energy to directly activate an electromagnet from a resting state in which the gas is shut off.
  • the electromagnet must be activated forcibly, mechanically, by pressing the gas supply button. In this case, said pressing must be continued and, therefore, the latch must be held for a certain period of time, usually 1-5 seconds after the flame ignites, until the thermocouple releases enough energy to keep the electromagnet on even without mechanical force.
  • the system consists of two components: a thermocouple and a solenoid valve.
  • the solenoid valve is mounted in a common housing together with the gas tap.
  • the thermocouple acts as a kind of electric generator. As a result of heating, an EMF arises in it, which is transmitted to the solenoid valve and keeps it open. Through the open valve, gas flows to the burner. If the flame goes out, the thermocouple cools down for some time, the electricity disappears and the valve no longer receives a signal and closes. This stops the gas supply to the burner.
  • the claimed invention unlike other known inventions, which are essentially a semblance of a standard system, works on a different principle and eliminates the disadvantage of the standard system, namely: the need to keep the tap pressed when turned on due to the presence of a power supply and electronics that forcibly hold the valve is in the open position until the thermocouple is heated (the proposed technical solution does not have this drawback).
  • the analogues have disadvantages: the need for power supply, the presence of electronic components in the design, and therefore greater complexity and less reliability of the design.
  • the problem to be solved by the invention is to improve the consumer and operational properties of a gas burner.
  • a gas burner design includes an effective, fast-acting protective mechanism for controlling the flame of gas stove burners, which increases the reliability of flame control and excludes from the design control units based on electronic components and dependent on power supply, which do not always work reliably and are relatively short-lived: for example, Chromel-Copel thermocouple and solenoid valve.
  • the technical result is increasing the safety of the gas burner, reliability and durability, eliminating dependence on the power supply.
  • a new design of a gas burner containing a housing, a divider, a nozzle, a valve, a temperature sensor characterized by a rod located along the central vertical axis of the burner with the ability to control the gas supply through the nozzle;
  • the internal cavity of the cylinder of the divider body has upper and lower partitions with holes in the center , coinciding with the vertical axis of the burner, through which a rod is installed with the ability to move up and down vertically;
  • An automatic protective mechanism is installed on the side protrusion of the lower partition, including a temperature sensor, a flow sensor, a latch with a spring, while the latch is installed with the possibility of rotation on the axis of the protrusion of the lower partition,
  • the temperature sensor consists of a metal part attached to the divider body, and a thermoelement installed on the same axis with the flow sensor;
  • the rod is equipped with a spring and a locking ring, and at the latch level has an annular groove.
  • the jet is equipped with a valve with a spring, and the rod spring is installed above the upper partition.
  • the latch is made in the form of a plate with ends bent in opposite directions perpendicular to the plane of the plate.
  • the flow sensor is made in the form of a light metal plate.
  • the temperature sensor thermocouple is made in the form of a bimetallic plate;
  • the metal part of the temperature sensor is made in the form of a plate with two curved ends and its long part is rigidly detachably fixed horizontally to the divider body.
  • the bent end of the metal part of the temperature sensor and the upper end of the thermoelement of the temperature sensor are rigidly and permanently connected to each other.
  • Another special case is when the rod spring is located below the upper partition, and the rod is equipped with a seal.
  • FIG. 1 Design of a typical gas control system.
  • Fig. 2 Typical gas control system.
  • Fig. 3 Design of a typical stove burner.
  • Fig. 5 Design of the inventive gas burner.
  • Fig. 8 Construction of a gas burner at low gas pressure in the system.
  • thermocouple flame sensor
  • Example implementation To implement the stated technical result, a gas burner is proposed, containing a housing 1, a divider 2, a nozzle 4, a valve 7, a temperature sensor 9, 10. Along the central vertical axis of the burner there is a rod 14 with the ability to control the gas supply through the nozzle 4, the internal cavity of the cylinder of the divider body 2 has an upper 20 and lower 21 partitions with holes in the center coinciding with the vertical axis of the burner, through which a rod 14 is installed with the ability to move up and down vertically.
  • An automatic protective mechanism is installed on the side protrusion of the lower partition 21, including a temperature sensor 9 and 10, a flow sensor 11, a latch 12 with a spring 13, while the latch 12 is mounted with the possibility of rotation on the axis 22 of the protrusion of the lower partition, the temperature sensor consists of a metal part 9 , attached to the divider body, and a thermoelement 10 mounted on the same axis 23 with the flow sensor 11; rod 14 is equipped with a spring 15 and a locking ring 18, and at the level of the latch 12 it has an annular groove 25.
  • the jet 4 is equipped with a valve 16 having a seal 24, with a spring 17, while the spring 15 of the rod 14 is installed above the upper partition 20.
  • the latch 12 is made in the form of a plate with ends bent in opposite directions, perpendicular to the plane of the plate, working as shoulder.
  • the flow sensor 11 is made in the form of a light metal plate.
  • the thermoelement 10 of the temperature sensor is made in the form of a bimetallic plate, and the metal part 9 of the temperature sensor is made in the form of a plate with two curved ends and its long part is rigidly detachably fixed horizontally to the body of the divider 2.
  • the bent end of the metal part of the temperature sensor 9 and the upper end of the thermoelement of the temperature sensor 10 are rigidly and permanently connected to each other.
  • the spring of the rod 15 is located below the upper partition 20, and the rod 14 is equipped with a seal 19.
  • the claimed design differs from the typical protective system of gas burners by modernizing the following main components.
  • the diameter of the internal cylinder of the divider 2 is made slightly larger than in the standard design. This is necessary to compensate for the decrease in throughput, since the installed new elements partially block the flow of the gas-air mixture.
  • the divider 2 itself, unlike the standard one, which is simply inserted into the burner body 1, must be secured in the body in any convenient way (screws, latches, hooks, etc.).
  • In the inner part of the divider 2 there are two partitions: upper 20 and lower 21, which are located horizontally and, when viewed from above, are located relative to each other at an angle of 90 degrees. The partitions are formed during the manufacture of the divider by casting and form a single whole with the divider, or are manufactured separately and attached to the divider body using any suitable technological method.
  • Each partition has a central hole that coincides with the vertical axis of the burner.
  • a metal rod 14 is installed vertically in the holes of these partitions, which can move up and down in these holes.
  • the lower end of the rod 14 rests against the upper platform of the nozzle valve 16.
  • the rod 14 is located in the center, along the axis of the divider. (Alternatively, with a small diameter of the middle part of the divider, which can be in low-power burners, for the convenience of placing parts of the protective mechanism, the rod 14 can be shifted away from the middle. In this case, a horizontal plate is installed at the lower end of the rod 14, which presses to the jet valve 16).
  • the rod 14 In the upper part of the rod 14 there is a spring 15, which is located between the upper partition 20 and the locking ring 18, located at the very top of the rod 14. In the middle part, the rod 14 has an annular groove 25 for the latch 12 at the level of its lower arm (bent end).
  • a latch 12 is installed on the lower partition 21 of the divider body on the axis 22. The axis is located approximately in the middle of the latch 12. The upper arm of the latch (above the axis) is bent away from the rod and has an additional protrusion closer to the rod. The lower arm is bent towards the rod 14.
  • a temperature sensor (9, 10) is installed, consisting of two parts: the metal part of the thermoelement 9 and the thermoelement 10 itself. Both parts are connected to each other (for example, by spot welding).
  • the thermoelement with its metal part 9 is attached rigidly and detachably to the divider (for example, with 1-2 screws, depending on the design and size of the divider) through heat-insulating gaskets (asbestos, paranit, fiberglass, etc.).
  • thermoelement 9 The metal part of the thermoelement 9 is connected at one end to the second part (the thermoelement itself) 10, while the other end of the metal part of the thermoelement 9 is in the flame zone, and its task is to transfer heat from the flame to the second part of the thermoelement 10.
  • the second part of the temperature sensor is the thermoelement 10 is a bimetallic plate. This is an element that has the property deform (bend) in one direction under the influence of elevated temperature.
  • the plate contains two metals, each of which has its own thermal expansion coefficient. As a result, when such a plate is heated, one component expands by a certain amount, and the second by another. This leads to bending of the plate 10, and the degree of deformation is directly proportional to the temperature change.
  • Plate 10 When the plate 10 cools, it acquires its original position.
  • Plate 10 is a monolithic connection (rigid, permanent) of two plates made of materials with different coefficients of thermal expansion and is located in such a way that when heated, the plate bends in the direction from the rod 14 to the inner surface of the divider wall.
  • Such bimetallic elements are durable and widely used in various fields of mechanics, measuring technology, and automation.
  • a flow sensor 11 is fixed, which is a thin metal plate made of light metal (for example , aluminum, etc.) fixed horizontally on the swing axis 23.
  • the flow sensor plate 11 On one side (closer to the rod 14) from the swing axis 23, the flow sensor plate 11 has a relatively large area and light weight. On the other side of the swing axis 23, the flow sensor plate 11 has a small area, but greater weight, which is achieved by attaching a load of heavier metal (iron, etc.) to this side of the flow sensor plate 11.
  • the flow sensor plate 11 is balanced in such a way that the part having a larger area is slightly heavier. And when the gas is turned off, this side of the flow sensor plate 11 is lowered down until it comes into contact with the lower partition 21 of the divider 2. When the burner is turned on, that is, when the gas tap is opened, the flow of the gas-air mixture lifts the flow sensor plate 11 up, to the upper arm of the latch 12.
  • a typical jet is a metal (usually brass) part.
  • the jet is screwed into the burner body. Gas is supplied to it from below through a supply tube.
  • a hole of a certain diameter At the top of the nozzle there is a hole of a certain diameter through which gas enters the burner.
  • the modernized nozzle consists of: a metal body 4 of the same shape and size as the standard one, only the gas supply hole is of a larger diameter.
  • a valve 16 with the ability to move up and down. When moving upward, valve 16 with its lower part, on which the rubber seal of valve 24 is located, blocks the gas flow through nozzle 4.
  • the diameter of the valve stem 16 is smaller than the diameter of the hole in the nozzle body 4. Accordingly, a gap remains between the nozzle body 4 and the valve stem 16 through which gas passes.
  • the diameters of the valve stem 16 and the holes of the jet body 4 are selected so that the gas flow through the jet is the same as that of a standard jet.
  • the design of the protective mechanism does not change, only the spring 15 of the rod 14 is located not on top of the upper partition 20 of the divider 2, but below, and at the lower end of the rod 14 there is a rubber seal 19.
  • the standard jet 4 of the standard design remains, that is without valve 16 jets. In this case, at the top of the nozzle there is a hole for the exit of gas of a certain diameter (for example, 0.5-1 mm).
  • the entire operation of the automatic protective mechanism is similar to that described above. The difference is that rod 14, when the protection system is triggered, moves not up, but down.
  • the inventive design provides the following advantages.
  • thermocouple and solenoid valve are activated. In this case, each time there is mechanical movement of the valve elements and, accordingly, wear of these parts. In the proposed system, during normal operation, this does not happen.
  • the design does not include a thermocouple and a solenoid valve; a simpler and more reliable standard gas valve without a solenoid valve is used.
  • the jet valve is constantly in the open position.
  • the latch and the divider rod are also constantly in the same position. There are no mechanical movements, and accordingly there is no wear of these parts.
  • thermocouples in both designs work differently.
  • the thermocouple used in a typical system is located directly in the flame zone, since its operation requires heating to a relatively high temperature (the temperature at the tip of the control device reaches 800-1000 ° C, and often higher). As a result of heating, an EMF arises, which keeps the gas solenoid valve open. Due to the high temperature, over time the housing burns out and, accordingly, the thermocouple breaks down.
  • the proposed system does not have this drawback, since it uses a bimetallic plate, which is a simpler and more reliable device, and also does not require such high heating and is not located directly in the flame zone.
  • the technical result that can be obtained by implementing the proposed technical solution is to increase the reliability of the gas burner by simplifying the design of the automatic safety mechanism, removing dependence on the power supply, as well as increasing safety and convenience when operating the gas burner.
  • the claimed mechanism for automatically stopping the gas supply in the event of a flame extinguishment can be used on any other household and industrial appliances running on natural or liquefied gas, including heaters or water heaters.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)

Abstract

L'invention, qui concerne un brûleur à gaz, se rapporte aux appareils ménagers à gaz et permet d'augmenter la sécurité, la fiabilité et la durée de vie, et de se passer d'alimentation électrique. Ce brûleur à gaz comprend un corps, un distributeur, un gicleur, un clapet, un capteur de température, et une tige est disposée le long de l'axe central vertical du brûleur de manière à contrôler l'alimentation en gaz via le gicleur. La cavité interne du cylindre du corps du distributeur comprend des cloisons supérieure et inférieure avec des ouvertures au centre, qui coïncident avec l'axe vertical du brûleur et à travers lesquelles est disposée la tige de manière à se déplacer verticalement vers le haut et vers le bas. Sur une protubérance latérale de la cloison inférieure se trouve un mécanisme de protection automatique comprenant un capteur de température, un capteur de flux, un verrou avec un ressort; le verrou est disposé de manière à tourner sur l'axe de la protubérance de la cloison inférieure, le capteur de température comprend une partie métallique fixée au corps du distributeur, et un élément thermique disposé sur un même axe que le capteur de flux; la tige comporte un ressort et un anneau d'amortissement, et comporte une gorge annulaire au niveau du verrou.
PCT/RU2023/050266 2022-11-17 2023-11-15 Brûleur à gaz WO2024107087A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2022129942 2022-11-17
RU2022129942A RU2797620C1 (ru) 2022-11-17 Газовая горелка

Publications (1)

Publication Number Publication Date
WO2024107087A1 true WO2024107087A1 (fr) 2024-05-23

Family

ID=91085176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2023/050266 WO2024107087A1 (fr) 2022-11-17 2023-11-15 Brûleur à gaz

Country Status (1)

Country Link
WO (1) WO2024107087A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2105243C1 (ru) * 1996-03-06 1998-02-20 Евгений Александрович Бессонов Горелка газовой плиты
RU2126935C1 (ru) * 1997-06-24 1999-02-27 Залесский Виктор Фридрихович Способ контроля пламени горелки газовой плиты и устройство для его осуществления

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2105243C1 (ru) * 1996-03-06 1998-02-20 Евгений Александрович Бессонов Горелка газовой плиты
RU2126935C1 (ru) * 1997-06-24 1999-02-27 Залесский Виктор Фридрихович Способ контроля пламени горелки газовой плиты и устройство для его осуществления

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