• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Gas apparatus comprising at least one gas burner (10), a gas valve (20) comprising magnetic means, a main coil (33), connected to a thermocouple (60) and an auxiliary coil (34) connected to the magnetic means, and a manual actuator (40) acting on the magnetic means for opening a gas passage, the gas apparatus (200) comprising a control unit (100) connected to the auxiliary coil (34), and a electrical switch (70) connected to the control unit (100). When acting on the manual actuator (40), the electrical switch (70) is activated, and the control unit (100) applies a pulsing voltage to the auxiliary coil (34), generating a current signal that allows detecting the opening of the gas passage as a function of the change in the inductance of the auxiliary coil (34). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2668231A1
    申请号:ES201631466
    申请日:2016-11-16
    公开日:2018-05-17
    发明作者:Félix Querejeta Andueza；Jesús Ignacio ERRASTI BADIOLA
    申请人:Copreci S Coop；
    IPC主号:
    专利说明:

    DESCRIPTION

    Gas appliance

    SECTOR OF THE TECHNIQUE 5

    The present invention relates to gas appliances, and more specifically to gas cooking appliances.

    PREVIOUS STATE OF THE TECHNIQUE 10

    Gas appliances are known, in particular gas cooking appliances, comprising at least one gas burner, and for each gas burner, a gas valve with a gas inlet line and a gas outlet line from where The gas burner is fed with gas. This gas valve comprises an electromagnetic valve 15 for opening or closing a gas passage towards the gas burner, said electromagnetic valve comprising a magnetic closing member, a magnetic core, a main coil electrically connected to a thermocouple, which is arranged together to the gas burner, and rolled to the magnetic core. The gas valve also comprises a manual actuator that acts on the magnetic closure member to open the gas passage through the electromagnetic valve 20 when it is axially actuated. When the manual actuator is operated, the gas passage to the gas burner is opened, and the flame in said burner can be ignited. Heating the thermocouple with the flame produces an electromotive force in the main coil that allows the magnetic closure member and the magnetic core to be held together, and thus the passage of gas through the electromagnetic valve 25 is open, as long as remain active flame.

    Gas apparatuses are known which further comprise means for opening the passage of gas through the electromagnetic valve more quickly. CN1439849A describes a gas apparatus comprising at least one gas burner, and a gas valve for each burner, said gas valve comprising an electromagnetic valve comprising magnetic means for keeping a gas passage open to the burner, said said comprising. magnetic means a magnetic closure member, and a magnetic core, a main coil, electrically connected to a thermocouple disposed next to the
    burner, and wound in the magnetic core, and an auxiliary coil wound in the magnetic core. The gas valve also comprises a manual actuator that acts on the magnetic closure member to open the gas passage when it is axially displaced. The gas apparatus also comprises a control unit electrically connected to the auxiliary coil, and an electrical switch electrically connected to the control unit, said control unit providing a current signal circulating through the auxiliary coil, when the electrical switch it is activated, allowing said current signal to keep the gas passage open.

    To light the flame on the gas device burner, the user must press the manual actuator to open the gas passage in the solenoid valve to the gas burner, and activate the electric switch so that the control unit provides a signal of current to the auxiliary coil, and keep the gas passage open until the flame is ignited by some means of ignition. After the flame is ignited, it is the main coil that allows the gas passage to be kept open, by heating the flame of the thermocouple.

    EXHIBITION OF THE INVENTION

    The object of the invention is to provide a gas apparatus as defined in the 20 claims.

    The gas apparatus of the invention comprises at least one gas burner, and one gas valve for each burner, said gas valve comprising an electromagnetic valve comprising magnetic means for keeping open a gas passage 25 towards the burner, said said comprising. magnetic means a magnetic closure member, and a magnetic core, a main coil, electrically connected to a thermocouple arranged next to the burner, and wound in the magnetic core, and an auxiliary coil wound in the magnetic core. The gas valve also comprises a manual actuator that acts on the magnetic closure member to open the gas passage when it is axially displaced. The gas apparatus also comprises a control unit electrically connected to the auxiliary coil, and an electrical switch electrically connected to the control unit, said control unit providing a current signal flowing through the auxiliary coil, when the electrical switch is activated,
    allowing said current signal to keep the gas passage open.

    When the manual actuator moves axially, the electric switch is activated and the control unit applies a pulsating voltage to the auxiliary coil that generates the current signal, said control unit detecting the opening of the gas passage as a function of the change of the value of the inductance in the auxiliary coil.

    When the manual actuator is pressed, the user is not sure that the gas passage in the electromagnetic valve is open, either because he has not pressed said manual actuator all the way down, or because the gas valve has a problem that prevents it. In these 10 cases, even if the electric switch is activated so that the control unit supplies the current signal to the auxiliary coil, if the gas passage is not open the auxiliary coil is not able to keep the gas passage open, and since there is no flame in the gas burner, the main coil cannot keep said gas passage open either.
     fifteen
    The gas apparatus of the invention detects the opening of the gas passage, depending on the change in the value of the inductance in the auxiliary coil, when after activation of the electric switch, when the manual actuator is pressed, the control unit with the signal from the electrical switch applies a pulsating voltage to the auxiliary coil that generates the current signal. Thus, if the magnetic closing member 20 contacts the magnetic core when the manual actuator is pressed, the auxiliary coil will have a first inductance value and as a consequence the current signal will have a first value. If, when the manual actuator is pressed, the magnetic closure member does not contact the magnetic core, the auxiliary coil will have a second inductance value, different from the first inductance value, and the current signal will have a second value, different from the first value. Thus, in a simple manner the control unit of the gas apparatus detects whether the gas passage is open or not.

    These and other advantages and features of the invention will become apparent in view of the figures and the detailed description of the invention.
     30
    DESCRIPTION OF THE DRAWINGS

    Figure 1 shows a general scheme of an embodiment of a gas apparatus according to the invention.
    Figure 2 shows a partial diagram of the gas valve of the gas apparatus of Figure 1, with the manual actuator not being operated and the gas passage of the electromagnetic valve closed.

    Figure 3 shows a partial diagram of the gas valve of the gas apparatus of Figure 5 1, with the manual actuator actuated and the gas passage of the electromagnetic valve open.

    Figure 4a shows a diagram with the signal of the pulsating voltage applied to the auxiliary coil by the control unit of the gas apparatus of Figure 1.
     10
    Figure 4b shows a diagram with the current signal generated by the pulsating voltage of Figure 4a, when the magnetic means are in contact, the pulse voltage signal being in phase with the current signals.

    Figure 4c shows a diagram with the current signal generated by the pulsating voltage 15 of Figure 4a, when the magnetic means are separated with the pulse voltage signal being in phase with the current signals.

    Figure 5 shows a diagram with the ignition sequence of a burner of the gas apparatus of Figure 1, in which the gas apparatus does not comprise flame detection.

    Figure 6 shows a diagram with the ignition sequence of a burner of the gas apparatus of Figure 1, in which the gas apparatus comprises flame detection.
     25
    Figure 7 shows a diagram with the reignition sequence of a gas burner of the gas apparatus of Figure 1.

     Figure 8 shows a diagram with the re-ignition sequence of a gas burner of the gas apparatus of Figure 1, and the subsequent closure of the gas passage. 30

    DETAILED EXHIBITION OF THE INVENTION

    Figure 1 shows a general scheme of an embodiment of a gas apparatus 200
    according to the invention. Figure 2 shows a partial diagram of the gas valve 20 of the gas apparatus 200 of Figure 1, with the manual actuator 40 not being operated and the gas passage 21 of the electromagnetic valve 30 closed. Figure 3 shows a partial diagram of the gas valve 20 of the gas apparatus 200 of Figure 1, with the manual actuator 40 actuated and the gas passage 21 of the solenoid valve 30 open. Figure 4a 5 shows a diagram with a signal of the pulsating voltage Vp applied to the auxiliary coil 34 by the control unit 100 of the gas apparatus 200 of Figure 1, Figure 4b shows a diagram with a current signal i generated by the pulsating voltage Vp when the magnetic means 31, 32 are in contact, the signal of the pulsating voltage Vp being in phase with the current signals i, and Figure 4c shows a diagram with the signal of current 10 generated by the pulsating voltage Vp when the magnetic means 31, 32 are separated, the signal of the pulsating voltage Vp being in phase with the current signals i.

    The embodiment of the gas apparatus 200 of the invention shown, comprises a gas burner 10 ignited and with flame with a container on top, and a gas valve 20 for said burner 10. The gas valve 20 comprises an inlet conduit 22 of gas supplying said gas valve 20 from a supply source (not shown in the Figures), and a gas outlet 23 fluidically connected to the gas burner 10, and which allows its gas supply. The gas valve 20 comprises an electromagnetic valve 30, said electromagnetic valve 30 comprising, in a classical way 20 magnetic means 31, 32 which allow to keep open a gas passage 21 towards the gas burner 10, and a main coil 33. magnetic means 31, 32 comprise a magnetic closure member 31, and a magnetic core 32, and the main coil 33 is electrically connected to a thermocouple 60 disposed next to the burner 10, and wound in the magnetic core 32. The electromagnetic valve 30 also It comprises a second coil, which is an auxiliary coil 34, which, like the main coil 33, is wound to the magnetic core 32.

    The gas valve 20 also comprises a manual actuator 40 which in this embodiment of the gas apparatus 200 is coupled to the magnetic closure member 31. When the manual actuator 30 is not actuated, the magnetic closure member 31 closes the gas passage 21, for example with the help of a spring (not shown in the figures). When the manual actuator 40 is actuated, by pressing and moving it axially, the magnetic closing member 31 is moved by moving it, and overcoming the force of the spring the gas passage opens
    twenty-one.

    The gas valve 20 comprises a rotating organ (not shown in the Figures), arranged in the gas flow inside said gas valve 20, between the electromagnetic valve 30 and the gas outlet duct 23, the coupling being coupled manual actuator 40 to said rotating member, said rotating member allowing to regulate the flow of gas towards the gas burner 10. In a classic gas valve with the magnetic means and the main coil, when the user wants to light the flame in the burner of gas presses the manual actuator to open the gas passage in the solenoid valve towards the gas burner, and then rotates the gas actuator so that by means of the rotating organ supply a gas flow to the gas burner. Using some means of ignition, light the flame on the burner, while holding down the manual actuator, and after a while you can stop operating the manual actuator, since after the flame is ignited, by heating the thermocouple flame , it is the main coil that allows to keep the gas passage open by means of the electromotive force (hereinafter referred to as fem), since said fem creates a magnetic field that allows the magnetic means to be in contact and to have the passage of gas. But this way of lighting the flame in the gas burner is slow, since the generated fem increases in a progressive way until reaching a voltage value sufficient to keep the magnetic media in contact. twenty

    As already described above, the gas apparatus 200 comprises the auxiliary coil 34. Said gas apparatus 200 also comprises a control unit 100, which is electrically connected to said auxiliary coil 34, and an electrical switch 70 also electrically connected to the control unit 100. In this embodiment of the gas apparatus 25 200, the electric switch 70 is arranged in such a way that, when the manual actuator 40 is axially displaced, it closes the electric switch 70, an activation signal 71 arriving at the control unit 100. When the control unit 100 is activated by the activation signal 71, said control unit 100 provides a current signal i circulating through the auxiliary coil 34. This current signal i allows to maintain the passage of gas 21 opened quickly, so that the user can first release the manual actuator 40. By immediately circulating the current signal through the bobi An auxiliary magnetic field is rapidly generated which allows the magnetic means 31, 32 to be held together, the magnetic core 32 attracting the magnetic closure member 31, and
    In this way, the gas passage 21 is open. The flame ignition operation is performed as explained above, the fem is generated in the main coil, said main coil being definitely the one who keeps the gas passage 21 open. In short, it is a quick assistance to the ignition of the flame in the gas burner 10. 5

    But the user can find himself in certain situations in which he is not certain that the passage of gas 21 in the solenoid valve 30 is open, either because he has not pressed said manual actuator 40 to the bottom, ensuring the contact of the means magnetic 31, 32, and therefore the opening of the gas passage 21, or because the gas valve 20 has some problem that prevents it, such as dirt, wear, etc. In such cases, even when the electric switch 70 is activated so that the control unit 100 supplies the current signal ia to the auxiliary coil 34, if the gas passage 21 is not open, and the magnetic means 31, 32 are not in contact, the auxiliary coil 34 is not able to generate a magnetic field capable of attracting said magnetic means 31, 32, and 15 to open the gas passage 21. Since the flame cannot be ignited in the gas burner 10, the main coil 33 does not generate the fem, nor can it keep said gas passage open 21.

    However, the gas apparatus 200 of the invention detects the opening of the gas passage 21, 20 depending on the change of the inductance value in the auxiliary coil 34. By acting on the manual actuator 40, and after the activation of the switch electric 70, the control unit 100 is activated with the activation signal 71 from the electrical switch 70, and applies a pulsating voltage Vp to the auxiliary coil 34 that generates the current signal i. Thus, if, when the manual actuator 40 is pressed, the magnetic closure member 31 contacts the magnetic core 25, the auxiliary coil 34 will have a first inductance value, and as a consequence the current signal i will have a first value. If, when the manual actuator 40 is pressed, the magnetic closure member 31 does not contact the magnetic core 32, the auxiliary coil 34 will have a second inductance value, different from the first inductance value, and the current signal i will have a second value, different from the first value. Thus, the control unit 100 of the gas apparatus 200 knows whether the gas passage 21 is open or not, before making any other decision.

    As shown in Figure 4, in this embodiment of the gas apparatus 200, the signal of
    pulsating voltage Vp overlaps with the current signal i, that is, they are in phase. The pulsating voltage signal Vp is a square electrical pulse signal, with a pulsating DC voltage value Vp above a positive DC voltage value. The pulsating voltage Vp has a frequency between 10 Hz and 1 kHz, using a pulsating voltage Vp of 20 Hz being used in the preferred embodiment.

    The change in the value of the inductance in the auxiliary coil 34, when it goes from a non-actuation situation on the manual actuator 40 to a situation in which said manual actuator 40 is actuated to open the gas passage 21, is detected by checking the control unit 100 the evolution of the value of the current signal i circulating through said auxiliary coil 10, said current signal i being checked after each electrical pulse of the pulsating voltage Vp.

    The pulsating voltage Vp is applied to the auxiliary coil 34 for a time t, the current signal i being checked at a sampling time t1 after each electrical pulse. The control unit 100 detects the opening of the gas passage 21, preferably, when there is a change in the value of the inductance in the auxiliary coil 34 the current signal i checked passes, between consecutive electrical pulses, of a value of current Ic greater than a reference current Ir, at a current value Ia less than said reference current Ir. The value of the reference current Ir is a predetermined value by the manufacturer of the gas apparatus 200, depending on the characteristics of the auxiliary coil 34 and the magnetic means 31, 32, being a value that clearly differentiates the opening and closing situation of the gas passage 21, and therefore the contact or separation situation of said magnetic means 31, 32 .
     25
    Another mode of detection by the control unit 100 of the opening of the gas passage 21, is to check the value of the current signal i in a sampling time t1 after each electrical pulse, decreasing the value of the current signal i checked in successive pulses up to a current value Ia corresponding to the opening position of the gas passage 21. 30

    The application time t of the pulsating voltage Vp can have a value, for example, between about 5 seconds and between about 10 seconds.

    Figure 5 shows a diagram with the ignition sequence of a burner 10 of a gas apparatus, in which said gas apparatus (not shown in the Figures) is like the gas apparatus 200 of Figure 1, but does not comprise flame detection Said gas apparatus comprises a spark generator 50 disposed next to the gas burner 10, and electrically connected to the control unit 100. When the gas apparatus 5 does not comprise any type of fast acting flame detection, for example systems of Ionization or the use of the fem generated by the main coil 33 by the control unit 100, the sequence of ignition of the flame in the gas burner 10 begins with pressing, and therefore axial displacement of the manual actuator 40.
     10
    With the pressing of the manual actuator 40, the electric switch 70 is closed first, and the activation signal 71 reaches the control unit 100. When the control unit 100 is activated by the activation signal 71, said control unit 100 applies the pulsating voltage Vp to the auxiliary coil 34 for a time t, said pulsating voltage Vp generating the current signal i circulating through the auxiliary coil 34. By moving the manual actuator 15 completely 40, the magnetic closing member 31 and the core magnetic 32 are contacted, changing the value of the inductance of the auxiliary coil 34 in an instant tL. The user, in this embodiment of the gas apparatus 200, after pressing the manual actuator 40 rotates said manual actuator 40 so that the gas can exit through the outlet duct 23 towards the gas burner 10. After the instant tL of detection of the 20 changing the inductance value, the control unit 100 acts on the spark generator 50 generating a spark train 51 to ignite the flame in the gas burner 10, said spark train 51 having a duration from the moment tL to the end of time t of the pulsating voltage Vp. Once the flame is lit in the gas burner 10, the thermocouple 60 is heated and the fem in the main coil 25 33 is progressively generated until a voltage value close to the nominal Vn is reached and always greater than a minimum threshold value Vum defined by the manufacturer of the gas apparatus 200, this moment coinciding with the end of the application of the pulsating voltage Vp and the spark train 51.
     30
    Figure 6 shows a diagram with the ignition sequence of a burner 10 of the gas apparatus 200 of Figure 1, wherein said gas apparatus 200 comprises flame detection, and also comprises a spark generator 50 arranged next to the burner gas 10, and electrically connected to the control unit 100. The flame detection of the
    Gas apparatus 200 consists of an electrical connection 72 with the thermocouple assembly line 60 and main coil 33, so that the fem generated by said main coil 33 allows an electrical signal to be sent to the control unit 100, said control unit comprising 100 signal detection means (not shown in the Figures). The flame ignition sequence in the gas burner 10 begins with pressing, and therefore 5 axial displacement of the manual actuator 40.

    With the pressing of the manual actuator 40, the electric switch 70 is closed first, and the activation signal 71 reaches the control unit 100. When the control unit 100 is activated by the activation signal 71, said control unit 100 applies the pulsating voltage 10 Vp to the auxiliary coil 34, said pulsating voltage Vp generating the current signal i circulating through the auxiliary coil 34. By moving the manual actuator 40 fully, the magnetic closing member 31 and the magnetic core 32 are set in contact, changing the inductance value of the auxiliary coil 34 in an instant tL. After pressing the manual actuator 40, the user turns said manual actuator 40 so that the gas 15 can exit through the outlet duct 23 towards the gas burner 10. After the instant tL of detecting the inductance value change, the control unit 100 acts on the spark generator 50 generating a train of sparks 51 to ignite the flame in the gas burner 10. Once the flame is lit in the gas burner 10, the thermocouple 60 is heated and generated in a manner progressive the fem in the main coil 33. When said 20 fem reaches a predetermined threshold voltage value Vu, lower than the value of the nominal operating voltage Vn of the main coil 33, the control unit 100 via the electrical signal which arrives by means of the electrical connection 72, understands that with said threshold voltage value Vu is sufficient to keep the gas passage 21 open, therefore keeping the magnetic means 31, 32 in contact, and ceasing to act on the 25 spark generator 50. In this embodiment of the gas apparatus 200, at the same time the control unit 100 also ceases to apply the pulsating voltage Vp to the auxiliary coil 34. In this way it is possible to limit the electrical consumption to the achievement of the threshold voltage value Vu in the main coil 33.
     30
    Once the flame has been ignited in the gas burner 10, cooking can be carried out. However, problems may arise with the flame of the burner 10. Figure 7 shows a diagram with the re-ignition sequence of the gas burner 10 of the gas apparatus 200 of Figure 1, in which in said gas apparatus 200 the gas unit
    control 100 is electrically connected to the main coil 33. If a situation occurs in which the flame of the gas burner 10 is extinguished, due to the wind for example, or without extinguishing the flame for example the wind causes a flame dispersion in the burner 10 which affects the non-heating or under heating of the thermocouple 60, the effect produced is that the fem and therefore the nominal voltage value Vn in the main coil 5 begins to decrease.

    When the fem generated in the main coil 33 drops from the nominal voltage value Vn to the minimum threshold voltage value Vum, the control unit 100 applies the pulsating voltage Vp to the auxiliary coil 34 to keep the magnetic means 31, 32 in 10 contact and the gas passage 21 open, and at the same time acts on the spark generator 50, to generate the spark train 51, for a time t ', also defined by the manufacturer of the gas apparatus 200 with safety criteria . If the problem was a flame shutdown of the gas burner 10, the spark train 51 allows the reignition of said flame, the thermocouple 60 is reheated, recovering the nominal voltage value Vn of 15 the fem of the main coil 33 , allowing the maintenance of the opening of the gas passage 21. Another way of assessing the situation of extinguishing the flame of the gas burner 10 by the control unit 100, is to define in said control unit 100 drop gradients of the value of the tension in the main coil 33 in certain times, and gradients of increase in the value of the voltage in the main coil 33 in certain times (not shown in the Figures), so that said values being reached in the defined times , the control unit 100 applies the pulsating voltage Vp on the auxiliary coil 34, and acts on the spark generator 50 at the same time, and stops acting, respectively.
     25
    Figure 8 shows a diagram with the re-ignition sequence of the gas burner 10 of the gas apparatus 200 of Figure 1, and the subsequent closure of the gas passage 21, wherein in said gas apparatus 200 the control unit 100 It is electrically connected to the main coil 33. Unlike the re-ignition sequence described above, there may be situations in which, even trying, it is not possible to re-ignite the gas burner 10. In such situations, and for safety reasons, It is convenient to close the gas passage 21 as soon as possible.

    When the fem generated in the main coil 33 drops from the voltage value
    rated Vn up to a minimum threshold voltage value Vum defined by the manufacturer of the gas appliance 200, the control unit 100 applies the pulsating voltage Vp to the auxiliary coil 34 to keep the magnetic means 31, 32 in contact and the gas passage 21 open, and at the same time acts on the spark generator 50, to generate the spark train 51, for a time t '. If the problem was a flame shutdown of the gas burner 10, but the spark train 51 does not allow the reignition of said flame, the nominal voltage value Vn of the fem of the main coil 33 will continue to decrease. When the fem generated by the thermocouple 60 reaches a minimum voltage value Vm, the control unit 100 applies a voltage V 'to the auxiliary coil 34, of inverse polarity to the pulsating voltage Vp, and with such a value that it allows to separate the magnetic means 31, 32, such that 10 in a rapid manner the gas passage 21 closes, and the gas no longer reaches the gas burner 10. When the control unit 100 applies the voltage V 'to the auxiliary coil 34, at the same time it can emit acoustic and / or visual signals that allow the user to indicate that something abnormal has occurred, and in this situation it allows the user to realize that the gas valve 20 must be closed, turning the manual actuator 40 to a OFF position. fifteen

    Also in this situation, and as described above for a re-ignition sequence, the control unit 100 can assess the gas burner flame-off situation 10, by defining drop gradients of the voltage value at the main coil 33 at certain times. If a certain voltage drop gradient occurs after a certain time, the control unit 100 can interpret it as the spark train 51 has failed to reignite the flame in the gas burner 10.

     25
    权利要求:
    Claims (12)
    [1]

    1. Gas apparatus comprising at least one gas burner (10), and one gas valve (20) for each burner (10), said gas valve (20) comprising an electromagnetic valve (30) comprising magnetic means (31, 32) to keep a gas passage (21) open towards the burner (10), said magnetic means (31, 32) comprising a magnetic closure member (31), and a magnetic core (32), a main coil (33), electrically connected to a thermocouple (60) arranged next to the burner (10), and wound on the magnetic core (32), an auxiliary coil (34) wound on the magnetic core (32), and an actuator manual (40) acting on the magnetic closing member (31) to open the gas passage (21) when it is axially displaced, the gas apparatus (200) also comprising a control unit (100) electrically connected to the auxiliary coil (34), and an electrical switch (70) electrically connected to the control unit (100), said control unit (100) providing a current signal (i) circulating through the auxiliary coil (34), when the electric switch (70) is activated, allowing said current signal (i) to keep the gas passage open (21), characterized in that when the manual actuator (40) moves axially, the electric switch (70) is activated and the control unit (100) applies a pulsating voltage (Vp) to the auxiliary coil (34) that generates the current signal (i), said control unit (100) detecting the opening of the gas passage (21) as a function 20 of the change of the inductance value in the auxiliary coil (34).

    [2]
    2. A gas apparatus according to claim 1, wherein the pulsating voltage (Vp) overlaps with the current signal (i).
     25
    [3]
    3. A gas apparatus according to claim 1 or 2, wherein the change of the inductance value in the auxiliary coil (34) is detected by checking the evolution of the current signal (i) that circulates through said auxiliary coil (34) .

    [4]
    4. A gas apparatus according to claim 3, wherein the current signal (i) is checked after each electrical pulse of the pulsating voltage (Vp).

    [5]
    5. A gas apparatus according to claim 4, wherein the pulsating voltage (Vp) has a duration of time (t), the current signal (i) being checked in an instant (t1) after
    each electrical pulse, detecting the control unit (100) the opening of the gas passage (21) because due to the change of the inductance value in the auxiliary coil (34), the current signal (i) checked passes between pulses consecutive electric, of a value (Ic) greater than a reference current (Ir) at a value (Ia) less than said reference current (Ir). 5

    [6]
    6. A gas apparatus according to claim 4, wherein the pulsating voltage (Vp) has a duration of time (t), the current signal (i) being checked in an instant (t1) after each electrical pulse, detecting the unit of control (100) the opening of the gas passage (21) because due to the change of the inductance value in the auxiliary coil (34), the checked current signal (i) decreases in successive pulses up to a corresponding value (Ia) to the opening position of the gas passage (21).

    [7]
    7. A gas apparatus according to claim 5 or 6, wherein the pulsating signal (Vp) is applied during the time (t) between approximately 5 seconds and between approximately 10 15 seconds.

    [8]
    8. A gas apparatus according to any of the preceding claims, wherein the control unit (100) acts on a spark generator (50) when it detects the change of the inductance value in the auxiliary coil (34), generating a train of sparks (51) to ignite a flame in the burner (10), until the end of time (t) of the pulsating voltage (Vp).

    [9]
    9. A gas apparatus according to any one of claims 1 to 7, wherein the main coil (33) is electrically connected to the control unit (100) through an electrical connection 72, said control unit acting (100) on a spark generator (50) when it detects the change of the inductance value in the auxiliary coil (34), generating a train of sparks (51) to ignite a flame in the burner (10), and when a generated electromotive force by the thermocouple (60) in the main coil (33) with the heating of the flame, it reaches a predetermined threshold voltage value (Vu) 30, the control unit (100) stops acting on the spark generator (50) .

    [10]
    10. A gas apparatus according to claim 9, wherein the control unit (100) ceases to apply the pulsating voltage (Vp) to the auxiliary coil (34), when the electromotive force 35
    generated by the thermocouple (60) in the main coil (33) reaches the threshold voltage value (Vu).

    [11]
    11. A gas apparatus according to claim 10, wherein the control unit (100) applies the pulsating voltage (Vp) for a time (t ') to the auxiliary coil (34), when the electromotive force generated by the thermocouple (60) in the main coil (33), descends from a nominal voltage value (Vn) to a minimum threshold voltage value (Vum), the control unit (100) acts on the spark generator (50), generating a train of sparks (51) to ignite the flame in the burner (10) until the end of time (t ') of the pulsating signal (Vp), recovering the electromotive force generated by the thermocouple (60) in the main coil 33 the nominal voltage value (Vn).

    [12]
    12. The gas apparatus according to claim 10, wherein the control unit (100) applies the pulsating voltage (Vp) for a time (t ') to the auxiliary coil (34), when the electromotive force generated by the thermocouple ( 60) in the main coil (33), a nominal voltage value (Vn) drops from 15 to a minimum threshold voltage value (Vum), the control unit (100) acts on the spark generator (50), generating a train of sparks to ignite the flame in the burner (10), until the end of the time (t ') of the pulsating signal (Vp) to reach the nominal voltage value (Vn), and then applying the control unit (100) a voltage (V '), of inverse polarity at the pulsating voltage 20 (Vp) to the auxiliary coil (34) to close the gas passage (21), when the electromotive force generated by the thermocouple (60) drops at a minimum voltage value (Vm).
     25
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    ES2668231B1|2019-02-25|
    CN108072056A|2018-05-25|
    KR20180055726A|2018-05-25|
    CN108072056B|2020-10-30|
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    法律状态:
    2017-03-15| PC2A| Transfer of patent|Owner name: COPRECI, S.COOP. Effective date: 20170309 |
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    ES201631466A|ES2668231B1|2016-11-16|2016-11-16|Gas appliance|ES201631466A| ES2668231B1|2016-11-16|2016-11-16|Gas appliance|
    CN201710265032.8A| CN108072056B|2016-11-16|2017-04-21|Gas appliance|
    KR1020170152121A| KR20180055726A|2016-11-16|2017-11-15|Gas appliance|
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