Classifications

• • 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
  • F24C3/008—Ranges
• • 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
  • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
  • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N1/00—Regulating fuel supply
  • F23N1/005—Regulating fuel supply using electrical or electromechanical means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N1/00—Regulating fuel supply
  • F23N1/007—Regulating fuel supply using mechanical means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N5/00—Systems for controlling combustion
  • F23N5/20—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays
• • 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
  • F24C3/126—Arrangement or mounting of control or safety devices on ranges
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N2235/00—Valves, nozzles or pumps
  • F23N2235/12—Fuel valves
  • F23N2235/14—Fuel valves electromagnetically operated
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N2235/00—Valves, nozzles or pumps
  • F23N2235/12—Fuel valves
  • F23N2235/16—Fuel valves variable flow or proportional valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N2235/00—Valves, nozzles or pumps
  • F23N2235/12—Fuel valves
  • F23N2235/18—Groups of two or more valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N2237/00—Controlling
  • F23N2237/10—High or low fire
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23N—REGULATING OR CONTROLLING COMBUSTION
  • F23N2241/00—Applications
  • F23N2241/08—Household apparatus

Definitions

• the present invention relates to gas cooking appliances.
• US2008216810A1 describes a gas cooking appliance comprising at least one gas burner, a regulating valve fluidically communicated with each burner for regulating gas flow between a minimum power and a nominal power, and a timer switch for increasing the power of the burner to a booster power with a booster gas flow rate during a predetermined time interval.
• WO 2018/122714 A1 refers to a regulating valve which can provide a booster gas flow rate during a predetermined time interval.
• the body of the regulating valve comprises an auxiliary duct which can be communicated with the outlet of the regulating valve.
• US 2019/085998 A1 discloses a gas cooking appliance comprising at least one gas burner, a regulating valve fluidically communicated with the burner for regulating gas flow between a minimum power and a nominal power, and an electromagnetic valve arranged between the regulating valve and the burner.
• the electromagnetic valve comprises a closure member, moveable between a closing position and an opening position, the closure member comprising a through hole calibrated to allow the passage of the minimum gas flow.
• the closure member is arranged by default in the open position.
• the object of the invention is to provide a gas cooking appliance, as defined in the claims.
• the gas cooking appliance of the invention comprises at least one gas burner, a regulating valve fluidically communicated with the burner for regulating gas flow between a minimum power and a nominal power, and a timer switch for increasing the power of the burner to a booster power with a booster gas flow rate during a predetermined time interval.
• the gas cooking appliance further comprises an electromagnetic valve arranged between the regulating valve and the burner, the electromagnetic valve comprising a closure member, moveable between a closing position and an opening position, the closure member comprising a through hole calibrated to allow a gas flow corresponding to the nominal power of the burner to pass.
• the timer switch is configured for controlling the electromagnetic valve by causing the closure member to transition to the opening position to allow the passage of a flow providing the booster power.
• the closure member is arranged by default in the closing position, such that it allows, at most, the gas flow corresponding to the nominal power to pass, and in order to provide the booster power, the timer switch, which causes the closure member to transition to the opening position during a predetermined time, is activated.
• the gas cooking appliance of the invention is a simple and compact appliance as it requires only one internal gas conduit and allows the electromagnetic valve to be coupled directly to the outlet of the regulating valve, therefore reducing the required space, the number of required parts, and therefore the cost.
• Figures 1 to 9 show a first embodiment of a gas cooking appliance 100 according to the invention.
• the gas cooking appliance comprises four burners 10a-10d of different gas heat outputs, fluidically associated with a respective injector 11a-11d.
• the gas cooking appliance 100 comprises a regulating valve 20a for the burner 10a, which is fluidically communicated with the injector 11a, for regulating gas flow reaching the burner 10a from a main gas conduit 1.
• Gas flow regulation allows regulating the power of the burner 10a between a minimum power and a nominal power, and supplying a booster power which is greater than the nominal power.
• the gas cooking appliance 100 further comprises three manual gas valves 70b-70d, which are fluidically communicated with the injectors 11b-11d, for regulating gas flow reaching the respective burners 10b-10d from the main gas conduit 1.
• Gas flow regulation allows regulating the power of the burners 10b-10d between a minimum power and a nominal power.
• the valve 20a comprises a rotary actuator 21 acting in a range of angular actuation A, the actuator 21 being configured for varying the gas flow rate Q through the regulating valve 20a.
• the valve 20a is a compact element comprising a manual gas valve 70a, the manual valve 70a comprising a body 22 comprising an inlet conduit 23, assembled and in fluid communication with the main gas conduit 1, an outlet conduit 24, and the actuator 21 which is the actuating shaft of the manual valve 70a.
• the valve 20a also comprises an electromagnetic valve 40 which is coupled to the outlet conduit 24.
• the electromagnetic valve 40 comprises the gas outlet 41, which is fluidically communicated with the injector 11a, a gas inlet 47, which is fluidically communicated with the outlet conduit 24 of the valve 20a, and a single channel 43 running along the inside of the electromagnetic valve 40, and comprising a closure hole 45 through which gas flow is supplied to the gas outlet, the channel 43 fluidically communicating the inlet 47 and the gas outlet 41.
• the electromagnetic valve 40 also comprises a closure member 42, moveable between a closing position and an opening position, comprising a hole 44 configured for a first gas flow to go through same, the valve 20a supplying to the outlet 41 a second gas flow that is greater than the first gas flow when the closure member 42 is in the opening position, opening the closure hole 45 in the channel 43.
• a closure member 42 When the closure member 42 is in the closing position, it allows the passage of gas to the gas outlet 41 only through the hole 44.
• the gas cooking appliance 100 also comprises a timer switch 53, which is a device which allows increasing the power of the burner 10a to the booster power with a booster gas flow rate Qb, during a predetermined time interval, the timer switch 53 controlling the electromagnetic valve 40 of the valve 20a when it receives an operation signal and is activated.
• the gas cooking appliance 100 comprises an electric switch 60 for activating the timer switch 53 when it is activated, generating the operation signal and sending it to the timer switch 53.
• the gas cooking appliance 100 comprises a spark generator 51 electrically connected to an electrode 52 associated with each burner 10a-10d for igniting flame in said burner 10a-10d when it is activated.
• the switch 60 is operatively associated with the actuator 21 and electrically connected to the spark generator 51, such that when the switch 60 is activated by the user acting on the actuator 21, it activates the spark generator 51, said spark generator 51 activating the electrodes 52, and activates the timer switch 53 which controls the electromagnetic valve 40, simultaneously.
• the user does not have to arrange the actuator of the valve in a specific gas flow position on one hand, and press on a separate switch of the regulating valve on the other, so as to activate the booster or overfeeding function of the burner, but rather in one and the same operation of the valve 20a, he or she positions the actuator 21 in a booster gas flow position corresponding to the booster flow rate Qb, and by simply pressing on the actuator 21 in said position, the switch 60 is activated as it is associated with the actuator 21. With this operation, the booster gas flow rate Qb flows and flame is ignited in the burner simultaneously.
• the manual valves 70b-70d also comprise a rotary actuator 21 which is configured for varying the gas flow rate Q through the manual valves 70b-70d.
• the manual valves 70b-70d also comprise a body comprising an inlet conduit, assembled and in fluid communication with the main gas conduit 1, an outlet conduit, and the actuator 21 which is the actuating shaft of the manual valves 70b-70d.
• the gas cooking appliance 100 comprises three electric switches 60 associated with the actuators 21 of the manual valves 70b-70d.
• the switches 60 are electrically connected to the spark generator 51, such that when the switch 60 is activated by the user acting on the actuator 21, it activates the spark generator 51, said spark generator 51 activating the electrodes 52.
• the activation of the switch 60 is by means of pressing thereon.
• the actuator 21, which is the actuating shaft of the valve 20a and of the manual valves 70b-70d, is suitable for being moved axially, such that in its axial movement, the actuator 21 presses on a micro 61 of the switch 60, activating it.
• the switches 60 associated with the manual valves 70b-70d are electrically connected in parallel with the spark generator 51, and the switch 60 associated with the valve 20a is electrically connected with a wire independent of that of the other switches 60 to the spark generator 51 and the timer switch 53.
• the hole 44 of the closure member 42 is designed such that it is calibrated to limit the first gas flow going through same, when the closure member 42 is in the closing position, to a maximum flow rate QM corresponding with the nominal power of the burner 10a. Therefore, as long as the electromagnetic valve 40 is not activated, the maximum gas flow which can pass through the hole 44 of the closure member 42 is the maximum flow rate QM of the burner 10a. As the actuator 21 is arranged at other points of the actuation range, corresponding to smaller gas flows than the maximum flow rate QM, the hole 44 will allow said gas flows to pass, without restrictions, to the burner 10a.
• the actuator 21 when the actuator 21 is positioned within the booster range Ab, it can be positioned in said range in positions with different gas flow, all of them within the booster flow rate Qb, such that, even with the presence of those different gas flows, the limitation of the calibrated injector 11a will allow the burner 10a to work with the predetermined maximum booster power during the time interval predetermined by the timer switch 53.
• the actuation range A of the actuator 21 for regulating gas flow comprises a booster range Ab which, in the shown embodiment of the gas cooking appliance 100, is comprised between about 60° and between about 95°, in which the valve 20a supplies the booster flow rate Qb to the outlet 41 of the electromagnetic valve 40, when the switch 60 is activated and the closure member 42 is in the opening position.
• a position within the booster range Ab is that shown in Figure 9 as position P9.
• the user does not have to arrange the actuator 21 in a gas position on one hand, and press on a separate switch of the regulating valve on the other, but rather in one and the same operation with the valve 20a, he or she will position the actuator in the booster range Ab allowing a booster gas flow corresponding to the booster flow rate Qb, and by simply pressing on the actuator 21 in said position, he or she will activate the switch 60, and thereby actuate the booster or overfeeding function of the burner 10a.
• the booster flow rate Qb and the maximum flow rate QM coincide in the same angular position within the booster range Ab.
• the actuation range A for regulating gas flow comprises a regulation range A1 corresponding to a corresponding variable gas flow between a minimum gas flow rate Qm, corresponding to the minimum power of the burner 10a, in position P1 of the regulation range A1, and the maximum flow rate QM of the valve 20a, in position P9.
• the booster range Ab is at least partially within the regulation range A1 or adjacent to the regulation range A1, such that the gas flow corresponding to the booster flow rate Qb is obtained as the sum of flows corresponding to the booster range Ab and the regulation range A1, in the angular segment in which they coincide, but always with the booster flow rate Qb transitioning to the maximum flow rate QM, when the predetermined time interval set by the timer switch 53, when it has been activated, has elapsed.
• Said transmission element 21c is housed in a housing which is fluidically communicated with a hole (not shown in the drawings) which is arranged in the body 22 of the valve 20a, and is moreover fluidically communicated with the lower part of the regulator element 25. This hole fluidically communicates with the safety valve 71.
• a knob 29, shown in Figure 8 is arranged in the actuator 21 of the valve 20a to make it easier for the user to handle said valve 20a.
• Visual indications 29a which allow guiding the user with respect to the power required of the selected burner are arranged either in the panel of the gas cooking appliance 100 or in the lever 29 itself. Therefore, for example, the OFF position is indicated to indicate the valve being closed to gas flow, booster power/Qb, nominal power/QM, and minimum power/Qm, in addition to indicating, for example, the nine gas flow positions, between maximum flow P9 corresponding to the booster flow rate Qb and the maximum flow rate QM, and position P1 of minimum flow rate Qm.
• the gas cooking appliance 100 also comprises a thermocouple 12 arranged next to the burner 10a, said thermocouple 12 being electrically connected to the safety valve 71 of the regulating valve 20a.
• This thermocouple 12 has a safety function. Due to the flame in the burner 10a, the safety valve 71 is open due to the electric current generated in the thermocouple 12 and a magnetic group of the safety valve being powered with said electric current. However, when the flame in the burner 10a is extinguished for some reason, the magnetic group is no longer electrically powered, and the safety valve of the regulating valve 20a closes, closing the gas flow to the burner 10a.
• the gas outlet 41 of the electromagnetic valve 40 is fluidically communicated with the injector 11a through a single gas conduit 2a, through which conduit 2a different gas flows corresponding between the minimum and nominal power of the burner 10a, and the booster power when the electromagnetic valve 40 of the valve 20a is activated, go to said injector 11a, and therefore to the burner 10a.
• the manual valves 70b-70d are also fluidically communicated with the injectors 11b-11d through a respective single gas conduit 2b-2d.

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

Priority Applications (4)

Applications Claiming Priority (1)

Publications (2)

Family

ID=69147451

Family Applications (1)

Country Status (4)

Family Cites Families (10)

• 2019
  • 2019-12-17 ES ES19383125T patent/ES3041710T3/es active Active
  • 2019-12-17 PL PL19383125.2T patent/PL3839342T3/pl unknown
  • 2019-12-17 EP EP19383125.2A patent/EP3839342B1/en active Active
• 2020
  • 2020-12-15 CN CN202011472445.1A patent/CN112984563B/zh active Active

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