JP2017106697A - Gas appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas appliance that prevents a user from mistaking that the user has pushed an ignition/extinguishment button to an ignition position before pushing the button to the ignition position in igniting a gas burner by pushing the ignition/extinguishment button.SOLUTION: A gas appliance includes: a main valve 21a disposed so that the main valve is opened by a push-in force with respect to the ignition/extinguishment button 41; and an electric actuator operable by pushing the ignition/extinguishment button. The electric actuator is configured to push a valve body 35a of a solenoid safety valve so as to come into contact with an electric magnet 35.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a gas appliance provided with a push-operation type point-extinguishing button.

  Some gas appliances, such as gas stoves, are equipped with a fire extinguishing button in order to perform fire extinguishing of the gas burner. For example, in the case where the front panel of the gas stove has a point-extinguishing button, when the point-extinguishing button is pushed into the appliance from a fire extinguishing position where there is no step with respect to the front panel, supply of gas to the gas burner is started. The igniter is activated and the gas burner is ignited. After igniting the gas burner, when the hand is released from the point-extinguishing button, the point-extinguishing button protrudes to the near side by the urging force. In this state, the thermal power is adjusted to increase or decrease the thermal power, and when the gas burner is extinguished, the point-extinguishing button is pushed again to return to the initial fire extinguishing position (see, for example, Patent Document 1).

  For gas appliances that operate as described above, when the gas fire burner is ignited by pushing the fire extinguisher button from the fire extinguishing position, the main valve located on the far side of the fire extinguishing button is attached with the force of pushing the fire extinguishing button. The operation of opening the valve against the force and then moving the valve body of the electromagnetic safety valve against the urging force with the force of pushing the fire extinguishing button and pressing the valve body against the adsorption holding electromagnet Done.

  When the pushing force against the fire extinguisher button is released after the ignition of the gas burner is completed, the fire extinguishing button is pushed out to the fire power adjustment position as described above, but the valve body of the electromagnetic safety valve is adsorbed and held by the electromagnet, and the original valve is The valve is held open.

Japanese Patent Laying-Open No. 2015-1111029 (FIG. 7)

  In the above-mentioned conventional one, when the point fire extinguishing button is pushed from the fire extinguishing position for ignition, the main valve is opened first. At that time, the main valve is opened against the urging force. The button press becomes heavy. For this reason, the person who is performing the ignition operation has the illusion that the ignition button has been pushed to the position where the valve body of the electromagnetic safety valve is pressed against the electromagnet due to the pushing of the ignition button becoming heavy. The pushing force may be released by stopping at that position.

  If pressing of the fire extinguishing button is stopped before the valve body of the electromagnetic safety valve is pressed against the electromagnet, the valve body of the electromagnetic safety valve is not held open by the electromagnet, and the gas burner is not ignited. In this case, the person performing the ignition operation has an illusion that the fire extinguishing button has been pushed to the ignition position, and therefore, there is a tendency to determine that the cause that the gas burner does not ignite is a malfunction of the gas appliance.

  Therefore, in view of the above problems, the present invention provides a gas appliance that does not give the illusion that the fire extinguisher button is pushed to the ignition position before the fire extinguishing button is pushed to the ignition position when the fire extinguisher button is pushed to ignite the gas burner. The issue is to provide.

  In order to solve the above-described problems, the gas appliance according to the present invention has an electromagnetic safety valve and a main valve arranged in the middle of a gas supply path to the gas burner, and the main valve is opened by pressing a fire extinguishing button. In addition, in the gas appliance that starts the supply of gas to the gas burner and activates the ignition device by pressing the valve body of the electromagnetic safety valve against the electromagnet for holding the valve open, the original force is applied by the pushing force to the point-extinguishing button. The main valve is arranged so that the valve is opened, and an electric actuator that is operated by pressing a point fire extinguishing button is provided, and the valve body of the electromagnetic safety valve is pressed against the electromagnet by the electric actuator. To do.

  The main valve is opened by pushing force against the fire extinguisher button, but the valve body of the electromagnetic safety valve is opened by the electric actuator, so the resistance to pushing of the fire extinguisher button at ignition does not change in two stages. You can avoid the illusion that you pressed the button halfway.

  Specifically, an ignition position detecting means for detecting that the point-extinguishing button is pushed to the ignition position is provided, and when the ignition position detecting means detects that the push button is pushed to the ignition position, the electric actuator is The valve body of the electromagnetic safety valve is operated to press against the electromagnet.

  The point fire extinguishing button includes a push-push mechanism that holds the fire extinguishing position at three positions: a fire extinguishing position, the ignition position, and a thermal power adjustment position that is set on the near side from the ignition position beyond the fire extinguishing position, There is provided second detection means that operates at a predetermined position where the point-extinguishing button moves from the ignition position to the thermal power adjustment position and passes through the extinguishing position, and the ignition position detecting unit ignites the point-extinguishing button. When the second detection means is activated in a state where it has not been detected that it has been pushed to the position, by operating the ignition device, it is possible to move the point from the point on the fire extinguishing button without completely pushing the point on the fire extinguishing button to the ignition position. It is desirable to ignite the gas burner even when

  By the way, the electric actuator is operated in the opposite direction with the valve body of the electromagnetic safety valve pressed against the electromagnet by the electric actuator, and the valve body is attracted and held by the electromagnet, and the gas flow rate to the gas burner is determined by the amount of operation. It may be configured to adjust the heating power of the gas burner by increasing or decreasing the value.

  As is apparent from the above description, the present invention does not change the resistance to pushing of the fire extinguisher button in two steps, so that it is possible to avoid the illusion that the fire extinguisher button is pushed halfway. Can be reliably ignited.

The perspective view seen from the front of the gas stove to which the thermal-power control apparatus of this invention is applied The figure which shows the piping state in a gas stove Perspective view of thermal power control device Disassembled perspective view of thermal power control device Diagram showing cam groove shape of heart cam Diagram showing heart cam position and spring bar status Cross section of thermal power control device

  With reference to FIG. 1, 1 is a gas stove which is an example of the gas appliance by this invention. A top plate 11 is provided on the upper surface of the gas stove 1, and the top plate 11 is provided with three gas burners 11a, 11b, and 11c. On the other hand, the front panel 12 of the gas stove 1 is provided with thermal power control devices 13a, 13b, and 13c for performing point-extinguishing operations and thermal power control operations of the gas burners 11a, 11b, and 11c. In addition, a grill box 14 is provided in the approximate center of the front panel 12, and an upper fire burner 14 a and a lower fire burner 14 b are installed in the grill box 14. Then, the fire extinguishing and the thermal power adjustment of the upper fire burner 14 a and the lower fire burner 14 b are performed by the thermal power adjusting device 15.

  Referring to FIG. 2, in the present embodiment, the gas supply lines are branched into four in parallel, and thermal power control devices 13a, 13b, 13c, and 15 are provided in each of the branched supply lines. It has been. The thermal power control device 13a will be described as an example. The thermal power control device 13a includes a main valve 2 and a flow rate control unit 3 having a thermal power control function and an electromagnetic safety valve function. The flow rate adjusting unit 3 is operated by one motor 31.

  The flow rate control unit 3 of the thermal power control device 15 is branched into two parallel systems, each of which is provided with on / off valves 15a and 15b that open and close by electromagnetic force, and an orifice 16 that bypasses both the on / off valves 15a and 15b. It has been. Therefore, for example, when the on-off valve 15a is opened, the heating power of the upper fire burner 14a becomes high fire, and when the on-off valve 15a is closed, the gas passing through the orifice 16 makes low fire.

  With reference to FIG. 3 and FIG. 4, the structure of the thermal power control device 13a will be described by taking the thermal power control device 13a as an example. Reference numeral 41 denotes an operation knob that functions as a point-extinguishing button, which is pushed in when extinguishing a point, and is rotated while holding the outer peripheral surface when adjusting the heating power. An inner member 42 that moves forward and backward together with the operation knob 41 and rotates is connected to the inner side of the operation knob 41, and the inner member 42 is movable in the front-rear direction with respect to the rotation member 44. Is engaged. A coil spring 43 is contracted between the inner member 42 and the rotating member 44, and the operation knob 41 is always urged toward the near side via the inner member 42.

  The rotating member 44 is loosely fitted to a guide shaft 48 that engages with a bracket 47 made of sheet metal, and can rotate about the guide shaft 48. The guide shaft 48 is provided with an engaging claw that engages the rotating member 44 so as not to move in the forward direction, and the rotating member 44 is pressed against the bracket 47 by the reaction of the coil spring 43. The moving member 44 can be rotated without moving in the front-rear direction. Since the rotation member 44 is engaged with the inner member 42, when the operation knob 41 is rotated, the rotation member 44 is rotated via the inner member 42.

  A gear 44a is formed on the outer peripheral surface of the rear end portion of the rotating member 44, and a pinion 45 is engaged with the gear 44a. The pinion 45 is fitted on a shaft 46a of a rotary encoder 46 that is a rotation sensor. Therefore, when the rotation member 44 rotates, the shaft 46a of the rotary encoder 46 rotates. An electrical switch is provided in the rotary encoder 46. When the shaft 46a rotates, the switch repeatedly turns on and off at every predetermined angle. Therefore, when the shaft 46a rotates, the number of pulse signals corresponding to the rotation angle is increased. Is output. The motor 31 operates in accordance with the number of pulses, and the gas flow rate supplied to the gas burner is adjusted by a mechanism described later.

  A guide member 5 is attached to the rear of the bracket 47 (in the pushing direction side). The guide member 5 has a function of guiding the slider 62 and the regulating member 8 which are two members so as to be movable in the front-rear direction. On the left side when viewed from the front, a micro switch 51 having two contacts that are turned on and off depending on the position of the regulating member 8 and a second micro switch (not shown) are attached. A window hole 52 from which an engaging claw 81 formed on the regulating member 8 projects is formed on the right side surface. Similarly, a lock plate 7 is attached to the right side surface so as to be swingable in the vertical direction. A lock portion 72 is formed on the lock plate 7. When the lock plate 7 swings upward and overlaps the window hole 52, the engagement claw 81 of the restriction member 8 comes into contact with the lock portion 72, thereby restricting the restriction. The movement of the restriction member 8 is locked so that the member 8 cannot move further forward.

  The slider 62 is provided with an arm 61 that protrudes toward the front, and this arm 61 is rotatably engaged with the inner member 42. Accordingly, when the operation knob 41 is pushed in, the slider 62 moves backward in the guide member 5 via the arm 61. Further, when the operation knob 41 is returned to the near side by the biasing force of the coil spring 43, the slider 62 is also moved to the near side via the arm 61.

  A heart cam 6 is integrally provided on the slider 62, and a spring rod 71 into which the tip end portion 71 a is inserted into the cam groove of the heart cam 6 is held by the guide member 5 so as to be swingable. Since the tip 71a of the spring bar 71 is inserted through the window hole 73 of the lock plate 7, when the tip 71a swings and the vertical position is displaced, the lock plate 7 moves up and down in accordance with the displacement. Swing in the direction.

  The rod 21 protrudes from the main valve 21a toward the front, and a coil spring 82 is contracted between the main valve 21a and the regulating member 8. Accordingly, the regulating member 8 is always urged by the coil spring 82 toward the front side. However, when the slider 62 is moved backward by pushing the operation knob 41, if the regulating member 8 is pushed by the slider 62, the regulating member 8 is regulated. The member 8 also moves rearward and pushes the rod 21 rearward. When the slider 62 is moved forward, the regulating member 8 is also moved forward by the biasing force of the coil spring 82. At this time, the lock plate 7 is swung upward and the lock portion 72 is moved to the window hole 52. As described above, the engagement claw 81 comes into contact with the lock portion 72 and the movement of the restricting member 8 in the forward direction is restricted, and the main valve 21a is held open as described above.

  Referring to FIGS. 5 and 6, the heart cam 6 is formed with a substantially heart-shaped cam groove. When the operation knob 41 is in the fire extinguishing position, the tip 71a of the spring bar 71 is in the position a shown in FIG. When the operation knob 41 is pushed to the ignition position at the time of ignition from that position, the heart cam 6 moves backward, and at that time, the distal end portion 71a moves from a to b. At the time of the movement, the distal end portion 71a gets over the stepped portion D1, so that the pushing force against the operation knob 41 is released after completion of ignition, and the heart cam 6 moves together with the slider 62 to the heating power adjustment position which is the foremost end by the biasing force of the coil spring 43. At this time, the tip 71a does not return to a but moves to c beyond the step D2.

  When the fire is extinguished, the operation knob 41 is pushed in again. At this time, the tip 71a moves from c to d. Note that the vehicle travels over the step D3 immediately before reaching d. When the pushing force on the operation knob 41 is released from this state, the slider 62 returns to the near side by the urging force of the coil spring 43, and the tip end portion 71a returns to a corresponding to the fire extinguishing position again beyond the step portion D4.

  Referring to FIG. 7, in the fire extinguishing state shown in FIG. 7A, the operation knob 41 is in a state where there is no step with the front panel 12. At this time, the regulating member 8 is pressed against the slider 62 from the rear, and the front end of the rod 21 is separated from the regulating member 8. Therefore, the main valve 21a attached to the approximate center of the rod 21 is closed, and the valve body 22a of the electromagnetic safety valve is also closed. Thus, since both the main valve 21a and the valve body 22a of the electromagnetic safety valve are closed, the gas is not supplied to the gas burner.

  When the operation knob 41 is pushed down to the ignition position as shown in FIG. 5B, the regulating member 8 is also moved backward by being pushed by the slider 62. At this time, the rod 21 is also pushed rearward, so that the main valve 21a is opened. Further, when it is detected by turning on the micro switch 51 that the operation knob 41 has been pushed to the ignition position, the motor 31 is operated to move the heating power adjustment rod 33 in the right direction in the figure. A rotating body 32 is attached to the rotating shaft of the motor 31, and a screw portion 33 a formed on the heating power adjusting rod 33 is screwed into the rotating body 32. For this reason, when the rotating body 32 rotates, the thermal power adjustment rod 33 moves in a state where the rotation is prevented.

  The thermal power adjusting portion 33b formed at the tip of the thermal power adjusting rod 33 moves the sliding member 34 in the right direction in the drawing while being fitted to the cylindrical sliding member 34, so that the valve body 35a of the electromagnetic safety valve also slides. It is pushed by the member 34 and moves to the right. The valve body 35a is pressed against the electromagnet 35 of the electromagnetic safety valve. Since the electromagnet 35 is energized and excited when the micro switch 51 is turned on, the valve body 35a is opened to the electromagnet 35. Adsorbed and held in a state.

  When the pushing force on the operation knob 41 is released from this state, the operation knob 41 moves forward and protrudes as shown in FIG. At this time, the slider 62 also moves forward, but the lock plate 7 swings upward to restrict the movement of the restricting member 8 in the forward direction. In this state, the rod 21 is in contact with the regulating member 8, and the main valve 21a is held in a state in which the valve is opened. Further, the valve element 35a of the electromagnetic safety valve is also held by suction in the opened state.

  In this state, when the operation knob 41 is rotated to perform the thermal power adjustment operation, the rotary encoder 46 detects the rotation amount and operates the motor 31 to slide with the thermal power adjustment unit 33b at the tip of the thermal power adjustment rod 33. The distance from the hollow portion of the member 34 is increased or decreased, and the flow rate of the gas supplied to the gas burner through the hollow portion is increased or decreased.

  Then, when extinguishing the fire from this heating power adjustment position, the operation knob 41 is pushed in, and it returns to a which is the first fire extinguishing position via c to d shown in FIG. At that time, the state changes from the state shown in FIG. 7C to the state shown in FIG. In the middle of the change, the engagement between the lock plate 7 and the regulating member 8 is released, so that the rod 21 is moved forward by the biasing force of the coil spring 82 and the main valve 21a is closed.

  By the way, as described above, when the operation knob 41 is pushed from the fire extinguishing position to the ignition position, it is detected that the micro switch 51 is turned on to turn the ignition knob to the ignition position. As described above, when the pushing force to the operation knob 41 is released before the ignition position without being completely pushed into the ignition position, the operation knob 41 jumps to the heating power adjustment position without turning on the micro switch 51. In the above-described configuration, in such a case, since the micro switch 51 is not turned on, the gas burner is not ignited. In order to eliminate this non-ignition situation as inconvenience, the above-described second microswitch (not shown) is provided to be turned on at the “second detection position” in FIG. The second detection position was set at a position farther from the fire extinguishing position to the heating power adjustment position. By configuring in this way, the gas stove can be ignited even if the operation knob 41 is not sufficiently pushed during ignition.

  If the gas burner misfires during cooking, the valve body 35a is closed by shutting off the current for holding the adsorption that is applied to the electromagnet 35 of the electromagnetic safety valve, and the supply of gas to the gas burner is stopped. Can be made.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Gas cooker 2 On-off valve part 3 Flow control part 5 Guide member 6 Heart cam 7 Lock board 8 Control member 12 Front panel 13a Thermal power control device 13b Thermal power control device 13c Thermal power control device 14 Grill box 15 Thermal power control device 21 Rod 21a Original valve 31 Motor 35a Valve body 41 Operation knob 46 Rotary encoder

Claims (4)

  An electromagnetic safety valve and a main valve are installed in the middle of the gas supply path to the gas burner, and the valve is opened and the valve body of the electromagnetic safety valve is held open by pressing the fire extinguishing button. In the gas appliance that is pressed against the electromagnet and starts supplying the gas to the gas burner and operates the ignition device, the main valve is arranged so that the main valve is opened by the pushing force against the point-extinguishing button, A gas appliance comprising an electric actuator that operates by pressing a point fire extinguishing button, and the valve body of the electromagnetic safety valve is pressed against the electromagnet by the electric actuator.   An ignition position detecting means for detecting that the point-extinguishing button has been pushed to the ignition position is provided, and when the ignition position detecting means detects that the push button has been pushed to the ignition position, the electric actuator is operated to actuate an electromagnetic safety valve. The gas appliance according to claim 1, wherein the valve body is pressed against the electromagnet.   A push-push mechanism that holds the point-extinguishing button at three positions: an extinguishing position, an ignition position, and a thermal power adjustment position that is set on the near side from the ignition position beyond the extinguishing position; There is provided second detection means that operates at a predetermined position in the middle of the movement of the button from the ignition position to the firepower adjustment position and has passed through the fire extinguishing position, and the ignition position detecting means moves the fire extinguishing button to the ignition position. 3. The gas appliance according to claim 2, wherein the ignition device is operated when the second detection unit is operated in a state where it is not detected that the battery is pushed in. 4.   With the electric actuator pressing the valve body of the electromagnetic safety valve against the electromagnet and holding the valve body with the electromagnet, the electric actuator is operated in the reverse direction, and the flow rate of gas to the gas burner is increased or decreased by the amount of operation. The gas appliance according to any one of claims 1 to 3, wherein the gas burner is configured to adjust a heating power of the gas burner.

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