JP2019100681A - Gas valve device for heating cooker - Google Patents

Abstract

To shorten a time necessary from an ignition operation to burner ignition in a gas valve device 7 for a heating cooker which is provided with a solenoid safety valve 72, an operation rod 76 axially driven by a motor 74, and a valve seat member 77 which is axially movable in a valve casing 71, and in which a pressing portion 76a disposed on the operation rod 76 is brought into contact with a pressure receiving portion 77a disposed on the valve seat member 77 by movement to one side in an axial direction of the operation rod 76, the valve seat member 77 is pressed to one side in the axial direction, and a valve element 722 for a safety valve is pressed to a valve opening position through the valve seat member 77.SOLUTION: An operation rod 76 is moved to a prescribed standby position to have a state that a pressing portion 76a is kept into contact with a pressure receiving portion 77a, or a state just before the contact, to standby before an ignition operation. Preferably, the standby position is determined on a position of the operation rod 76 to have a state that a valve element 722 for a safety valve exists on the valve opening position or a position near the valve opening position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a heating cooker interposed in a gas supply path to a burner of a heating cooker provided with a burner for heating a food to be cooked and a point fire extinguishing operation member operated for ignition and extinguishment of the burner. The present invention relates to a gas valve device.

  Heretofore, as a gas valve device of this type, according to Patent Document 1, an electromagnetic safety valve, an operation rod axially driven by a motor, and an axially movable valve seat member are provided in a valve casing It has been known. The electromagnetic safety valve has a safety valve seat and a safety valve seat, which are provided so that one axial direction is the forward movement direction and the other axial direction is the backward movement direction so as to face the valve seat member in the forward movement direction. Suction that is connected to the opposing valve body for the safety valve, a valve spring for urging the valve body for the safety valve in the backward direction to be seated on the valve seat for the safety valve, and a valve shaft extending in the forward direction to the valve body for the safety valve A piece and an electromagnet facing the suction piece are provided. Further, the operating rod is provided with a pressing portion provided on the valve seat member and facing the pressure receiving portion facing in the backward movement direction, and movement of the valve seat member in the backward movement direction in the valve casing is a valve seat for safety valve A valve seat stopper for stopping at a predetermined return end position at which the valve body for safety valve can be seated, and a valve seat spring for biasing the valve seat member in the return direction are provided. Then, by the movement of the operating rod in the forward movement direction, the pressing portion is brought into contact with the pressure receiving portion, and the valve seat member is pushed forward from the return end position, and the safety valve seat is used as the safety valve By bringing the valve body into contact, the valve body of the safety valve is pushed against the biasing force of the valve spring to the valve opening position where the adsorption piece abuts on the electromagnet.

  According to the above gas valve device, the electromagnet is energized in a state where the valve body for the safety valve is pushed to the valve opening position through the valve seat member by the movement of the operation rod in the forward movement direction, and the valve body for the safety valve After adsorbing the valve in the valve opening position, by moving the operating rod in the backward direction, the valve seat for safety valve is separated from the valve body for the safety valve which is adsorbed in the valve opening position, and the electromagnetic safety valve is opened. Then, even if an open failure occurs in which the valve body for the safety valve is held at the valve opening position, the valve seat for the safety valve is pressed against the valve body for the safety valve by moving the operating rod again in the forward movement direction. The safety valve can be closed to prevent the release of gas. Further, even if the operating rod locks in the forward movement position, the release of gas can be prevented since the electromagnetic safety valve is closed. Therefore, it is possible to achieve fail-safe when an open failure occurs in the solenoid safety valve or when the operating rod is locked in the forward movement position.

  Here, at the time of burner combustion, the operating rod usually moves to such a position that the pressing portion is separated from the pressure receiving portion of the valve seat member at the return end position to some extent in the return direction. Then, when the fire extinguishing operation by the point fire extinguishing operation member is performed, the current supply to the electromagnet is stopped without moving the operation rod, and the gas supply to the burner is stopped by closing the electromagnetic safety valve. There is.

  Therefore, when the ignition operation is performed by the point fire extinguishing operation member, the operating rod is at the normal position during burner combustion (a position where the pressing portion is separated to some extent from the pressure receiving portion of the valve seat member at the return end position) Often move in the forward direction. As a result, it takes time for the pressing portion to abut the pressure receiving portion of the valve seat member at the return end position from the start of movement of the operating rod in the forward direction, and thereafter the safety valve is moved to the open position. The pressing also takes time, and the time taken from the ignition operation to the burner ignition becomes long.

JP, 2013-68356, A

  In view of the above-mentioned point, the present invention makes it a subject to provide a gas valve device for cooking devices which made it possible to shorten time taken from ignition operation to burner ignition.

  In order to solve the above problems, the present invention relates to a gas supply passage to a burner of a heating cooker provided with a burner for heating a food to be cooked and a point fire extinguishing operation member operated for ignition and extinguishment of the burner. A gas valve device for a cooker to be interposed, wherein an electromagnetic safety valve, an operation rod axially driven by a motor, and an axially movable valve seat member are provided in a valve casing, The electromagnetic safety valve is a safety valve seat that is provided so as to face the forward movement direction to the valve seat member with one axial direction as the forward movement direction and the other axial direction as the backward movement direction, and a safety valve for the safety valve The valve body, a valve spring for urging the safety valve body in the backward direction to be seated on the safety valve seat, an adsorption piece connected to the safety valve body via a valve shaft extending in the forward direction, and adsorption And an electromagnet facing the piece, and the operating rod is provided on the valve seat member. The pressure receiving portion facing the backward movement direction is provided with a pressing portion opposite to the pressure receiving portion, and a predetermined valve valve seat can be seated on the safety valve seat with movement of the valve seat member in the backward movement direction in the valve casing A valve seat stopper for stopping at the return end position and a valve seat spring for urging the valve seat member in the return direction are provided, and the pressing portion is brought into contact with the pressure receiving portion by the forward movement of the operating rod. The valve seat member is pushed forward from the return end position, and the safety valve seat abuts against the safety valve, until the valve opening position where the suction valve abuts against the electromagnet. In the device in which the pressing force is applied against the biasing force of the valve spring, the operating rod is in contact with the pressure receiving portion before the ignition operation is performed by the point fire extinguishing operation member, or the return end position Waiting for a predetermined minute distance from the pressure receiving portion of the valve seat member It is moved to a position wherein the to standby.

  According to the present invention, the time required for the pressing portion to abut the pressure receiving portion of the valve seat member at the return end position from the start of movement of the operating rod in the forward movement direction after the ignition operation is zero or extremely short. The time taken from the ignition operation to the burner ignition can be reduced accordingly.

  Further, in the present invention, it is preferable that the standby position is set to the position of the operating rod in which the safety valve body is in the valve opening position or a position where the valve body approaches a predetermined minute distance from the valve opening position. According to this, after ignition operation, time required to push the valve element for safety valve to the valve opening position can be made zero or extremely short, and time required from ignition operation to burner ignition can be further shortened.

  Further, in the present invention, it is desirable that a convex portion be provided on at least one of the pressing portion and the pressure receiving portion so that the pressing portion and the pressure receiving portion are in line contact or point contact. According to this, even if the sealing agent applied to the gas pipe at the time of piping construction intrudes into the gas valve device and adheres to the contact portion between the pressing portion and the pressure receiving portion, the pressure portion and the pressure receiving portion Since the contact area between the two is reduced, it is possible to prevent the pressure portion from being firmly fixed to the pressure receiving portion as much as impossible to separate from the pressure receiving portion.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of an example of a heating cooker which comprises the gas valve apparatus of embodiment of this invention. The figure which shows the gas circuit of the heating cooker of FIG. The cut side view of the gas valve device of the embodiment of the present invention. The disassembled perspective view of the interlocking mechanism which the gas valve apparatus of embodiment comprises. (A) (b) (c) Cutaway side view of the principal part which shows operation of the gas valve device of an embodiment. (A) Enlarged cutting side surface of pressing portion and pressure receiving portion of gas valve device of the embodiment, (b) A cross-sectional view of the operating rod cut along the line B-B in FIG. (A) Enlarged cutting side surface of pressing portion and pressure receiving portion of gas valve device of another embodiment, (b) Cross-sectional view of operation rod cut along line B-B in FIG. 7 (a).

  FIG. 1 shows a cooker consisting of a built-in stove. The heating cooker is placed on the countertop so as to cover the upper surface of the cooker main body 1 installed so as to be dropped into the opening opened in the countertop of the system kitchen (not shown) and the cooker main body 1 Top plate 2 and a front left # 1 and a front right # 2 which are exposed on the top plate 2 and which are to be heated (not shown) such as a pot placed on the V-Tei 21 on the top plate 2 And a total of three burners # 3 on the rear side, and a grill 4 incorporated in the cooker body 1.

  Referring to FIG. 2, the gas supply passage 5 for the heating cooker is branched into four branch passages 5a on the downstream side of the main valve 6 interposed therebetween, and three branch passages 5a among them are # 1 to # 1. The remaining branch path 5a connected to the burner 3 of # 3 is connected to the burner 4 of # 4 provided on the grill 4 and heating the food in the grill 4. In each of the branch paths 5a, gas valves 7 of # 1 to # 4 in which an electromagnetic safety valve 72 and a flow control valve 73 described later are incorporated are interposed.

In addition, an ignition electrode 31 is attached to each burner 3. Then, the igniter 32 ₁ to apply a high voltage to the three ignition electrodes 31 of the three burners 3 of # 1 to # 3, the igniter 32 ₂ for applying a high voltage to the ignition electrode 31 of the burner 3 ♯4 Is provided. Each burner 3 is also provided with a flame detection element such as a thermocouple (not shown).

On the front panel 1 a of the cooker body 1, a power switch 11 and point-extinguishing buttons 12 # 1 to # 4 which are point-extinguishing operation members for the burners # 1 to # 4 are provided. Each point fire button 12 is a push-push type, and protrudes from the fire position shown in FIG. 1 which is immersed in the front panel 1a to a burning position in front of the front panel 1a by pushing once and releasing it. It can be turned for adjustment. A signal from an operation detection switch (not shown) of the point fire button 12 of each burner 3 is input to a controller 8 consisting of a microcomputer which is an electronic control means together with a signal from the flame detection element of each burner 3. Then, the controller 8 controls the igniters 32 ₁ and 32 ₂ , the main valve 6 and the gas valve devices 7 of # _{1 to} # 4.

  Referring to FIG. 3, the gas valve device 7 includes a cylindrical valve casing 71, an electromagnetic safety valve 72 disposed in the axial direction in the valve casing 71, and the other axial deviation in the valve casing 71. A motor 74 comprising a flow control valve 73 disposed in series with the electromagnetic safety valve 72, a stepping motor mounted on the outer end of the box 711 attached to the other axial end of the valve casing 71, and a shaft The control rod 76 is inserted from the other side and axially driven by the motor 74 through the interlocking mechanism 75, and a valve seat member 77 axially movably provided in the valve casing 71. In the following description, one axial direction is referred to as a forward movement direction, and the other axial direction is referred to as a backward movement direction.

  In the valve casing 71, a gas inlet 71a located on the upstream side of the electromagnetic safety valve 72 and a gas outlet 71b located on the downstream side of the flow control valve 73 are opened. Then, when the electromagnetic safety valve 72 is opened, the gas flows from the gas inlet 71 a to the gas outlet 71 b, and the gas is supplied to the corresponding burner 3.

The electromagnetic safety valve 72 is a valve seat 721 for safety valve formed to face the valve seat member 77 in the forward direction.
, The valve body 722 for the safety valve facing the valve seat 721 for the safety valve, the valve spring 723 for urging the valve body 722 for the safety valve in the backward direction and seating on the valve seat 721 for the safety valve, An adsorption piece 724 connected via a valve shaft 722a extending in the forward movement direction and an electromagnet 725 facing the adsorption piece 724 are provided. Then, the safety valve valve body 722 is opened by energizing the electromagnet 725 in a state where the safety valve body 722 is pushed against the valve spring 723 to the valve opening position where the attraction piece 724 abuts against the electromagnet 725. It is made to be attracted and held at the position. Also, when a misfire is detected by a flame detection element attached to the burner 3 or when a fire extinguishing operation is performed to push the point fire button 12 from the combustion position back to the fire position, the energization of the electromagnet 725 is stopped. The valve body 722 for safety valve is returned to the valve closing position where it is seated on the valve seat 721 for safety valve by a valve spring 723, the electromagnetic safety valve 72 is closed, and the gas supply to the burner 3 is stopped.

  Also, a projection formed on the inner surface of the valve casing 71 that stops the movement of the valve seat member 77 in the backward movement direction at a predetermined backward movement end position where the safety valve valve body 722 can be seated in the valve casing 71 A valve seat stopper 771 and a valve seat spring 772 for urging the valve seat member 77 in the backward movement direction to elastically hold the valve seat member 77 in the backward movement end position. Also, in order to prevent the flow of gas to the outside of the valve seat member 77, a veloff ram 773 is provided.

  The flow control valve 73 includes a control valve seat 731 formed to face the return direction to the valve seat member 77, and a control valve valve body 732 fixed to the forward movement side end of the operation rod 76. Have. The valve body 732 for the control valve is inserted from the return direction into the closing valve portion 732a that can be seated on the valve seat 731 for the control valve so as to close the valve hole 731a opened in the valve seat 731 for the control valve. It has a possible needle portion 732 b and a bypass passage 732 c which constantly communicates the upstream side and the downstream side of the flow rate adjustment valve 73. In the present embodiment, the pressure receiving portion 77a provided on the valve seat member 77 and directed in the backward direction is constituted by the valve seat 731 for the control valve, and the pressing portion 76a provided on the operation rod 76 is opposed to the pressure receiving portion 77a. It is comprised by the closure valve part 732a. Further, although the control valve valve body 732 is integrally formed with the operation rod 76, the control valve valve body 732 may be attached to the operation rod 76 as a separate body from the operation rod 76.

  Referring to FIGS. 3 and 4, interlocking mechanism 75 includes a reduction gear train 751 incorporated in the case of motor 74, a rotation shaft 752 rotationally driven by motor 74 via reduction gear train 751, and a rotation shaft In the cylindrical cam body 754 concentric with the operation rod 76 and connected to the rotary shaft 752 via the connector 753 so as to rotate interlockingly with the shaft 752, and the spiral cam groove 754a formed in the cam body 754 The operating rod 76 is formed by an axial thrust that is engaged with the pin 755 fixed to the operating rod 76 and that acts from the cam groove 754a through the pin 755 by the rotation of the cam body 754 in the forward and reverse directions. It is made to move in the forward movement direction and the backward movement direction.

  The connector 753 has a non-circular hole 753 a fitted to a non-circular rotating shaft 752 in cross section and rotates together with the rotating shaft 752. Further, the connector 753 is provided with a projecting piece portion 753b which transmits a rotational force by engaging with a notch portion 754b formed at the end of the cam body 754 in the backward movement direction. A guide cylinder 756 extending in the backward direction from the valve casing 71 is inserted into the cam body 754. The guide cylinder 756 is formed with an elongated hole 756a in the axial direction, and the pin 755 is slidably engaged with the elongated hole 756a in the axial direction.

  According to the above configuration, when the motor 74 is rotated in the normal direction, the operating rod 76 is engaged via the interlocking mechanism 75, that is, the reduction gear train 751, the rotating shaft 752, the connector 753, the cam 754 and the pin 755. The valve seat for the control valve of the valve seat member 77 in which the closing valve portion 732a (the pressing portion 76a) of the control valve valve body 732 is stopped by the valve seat stopper 771 moving in the forward movement direction. The valve seat member 77 is pushed by the closing valve portion 732a to move in the forward movement direction, and the safety valve 722 is pushed to the valve opening position through the valve seat member 77. It is moved (the state shown in FIG. 5 (a)).

When an ignition operation is performed to cause the point fire button 12 to project from the fire suppression position to the combustion position, the electromagnet 725 is energized while the safety valve 732 is pressed to the valve opening position, and the safety valve 722 is opened. Then, the motor 74 is reversely rotated while the spark electrode 31 is sparked by energizing the igniter 32 ₁ (the igniter 32 ₂ when the ignition operation is performed with the # 4 point fire button). By rotating in the direction, the operating rod 76, that is, the control valve 732 is moved in the backward direction. At this time, the valve seat member 77 moves in the backward direction following the control valve valve body 732 by the biasing force of the valve seat spring 772 to the return end position stopped by the valve seat stopper 771, and the safety valve The electromagnetic safety valve 72 is opened as the seat 721 separates from the valve body 722 which is held by suction in the open position. When the valve body 732 for control valve further moves in the backward direction with respect to the valve seat member 77 stopped at the return end position, the closing valve portion 732a separates from the valve seat 731 for the control valve and the needle portion 732b is a valve hole 731a. The gas flow rate gradually increases, and the burner 3 is ignited. Thereafter, the valve body 732 for the control valve moves in the forward direction, and the closing valve portion 732a is seated on the valve seat 731 for the control valve in a predetermined stroke range, that is, with the valve seat member 77 at the return end position. It exists in the range between the position (the state of FIG. 5 (b)) and the position (the state of FIG. 5 (c)) immediately before the safety valve seat 721 abuts on the safety valve If this is the case, the gas flows only through the bypass passage 732c, and the gas flow rate is maintained at the minimum amount.

  It is difficult to controlly stop the motor 74 at the moment when the safety valve 722 reaches the open position, ie, at the moment when the attraction piece 724 abuts against the electromagnet 725. Therefore, when the operation rod 76 is pushed in the forward movement direction via the interlocking mechanism 75 by further rotation of the motor 74 in the forward rotation direction after the valve element 722 for the safety valve reaches the valve opening position, the adsorption piece 724 and the electromagnet An excessive force may be applied to the contact portion with 725, and the suction piece 724 may be scratched to cause a suction failure.

  Therefore, in the present embodiment, a cam stopper 757 formed of an end plate of the box 711 which freely moves the cam body 754 in the axial direction and stops movement of the cam body 754 in the forward movement direction at a predetermined position; A cam spring 758 is provided to bias the cam body 754 in the forward movement direction. Then, when the safety valve 722 reaches the open position, the cam body 754 receives the cam spring 758 by an axial reaction force acting from the pin 755 through the cam groove 754 a by further rotation of the motor 74 in the forward direction. Move in the backward direction against the biasing force of the According to this, even if the motor 74 is further rotated in the forward direction after the safety valve 722 reaches the valve opening position, no excessive force is applied to the contact portion between the attraction piece 724 and the electromagnet 725. It is possible to prevent the occurrence of the adsorption failure due to the damage of the adsorption piece 724. In addition, before the valve body 722 for safety valve reaches the valve opening position, the cam spring 758 is moved so as not to lose the biasing force of the valve spring 723 and the valve seat spring 772 and move the cam 754 in the backward direction. The biasing force is set to be slightly larger than the combined force of the biasing forces of the valve spring 723 and the valve seat spring 772.

  By the way, except for the minimum heating power during the combustion of the burner 3, for the control valve of the valve seat member 77 in which the closing valve portion 732 a of the control valve valve body 732, that is, the pressing portion 76 a of the operation rod 76 is at the return end position. It is separated from the valve seat 731, that is, the pressure receiving portion 77 a in the return direction. Then, when the fire extinguishing operation is performed by the point fire button 12 in a state where the burner 3 is burned with a thermal power other than the minimum thermal power, only by closing the electromagnetic safety valve 72, the operating rod 76 is in the burning position. If the ignition button 12 is held from the fire extinguishing position to the combustion position, the time taken to ignite the burner will be long. That is, when the ignition operation is performed, first, the safety valve valve body 722 is pushed to the open position, but the pressing portion 76a is separated from the pressure receiving portion 77a of the valve seat member 77 located at the return end position. Also, it takes time for the pressing portion 76a to abut the pressure receiving portion 77a from the start of the movement of the operation rod 76 in the forward movement direction, and then it is also time to push the safety valve 722 to the valve opening position. It takes a long time from ignition operation to burner ignition.

  Therefore, in the present embodiment, before the ignition operation by the point fire button 12 is performed, the pressure receiving pressure of the valve seat member 77 in the state where the pressing portion 76a is in contact with the pressure receiving portion 77a or the return end position It is moved to a predetermined standby position which is in a state of approaching a predetermined minute distance (for example, a predetermined distance of 2 mm or less) from the portion 77a and made to stand by. According to this, the time required for the pressing portion 76a to abut the pressure receiving portion 77a of the valve seat member 77 located at the return end position from the start of the movement of the operating rod 76 in the forward direction is zero or extremely short. The time taken from the ignition operation to the burner ignition can be reduced accordingly. The movement of the operation rod 76 to the standby position may be performed when the fire extinguishing operation is performed by the point fire button 12 or when the power switch 11 is turned off.

  Here, in the "state where the pressing portion 76a is in contact with the pressure receiving portion 77a" described above, not only the state in which the pressing portion 76a is in contact with the pressure receiving portion 77a of the valve seat member 77 existing at the return end position Also included is the state after the portion 76a is in contact with the pressure receiving portion 77a and the movement of the valve seat member 77 from the return end position in the forward direction is started. Then, the standby position of the operating rod 76 is a state where the safety valve 722 is in a position where the valve opening position or the valve opening position approaches a predetermined minute distance (for example, a predetermined distance of 2 mm or less). It is desirable to set at the position of According to this, after ignition operation, the time taken to push the valve element 722 for the safety valve to the valve opening position can be made zero or extremely short, and the time from ignition operation to burner ignition can be further shortened. .

  By the way, when the pressing portion 76a of the operation rod 76 abuts on the pressure receiving portion 77a of the valve seat member 77 in a surface contact state, the following problems occur. That is, when the pressing portion 76a contacts the pressure receiving portion 77a in a surface contact state and the contact area of both the pressing portion 76a and the pressure receiving portion 77a increases, the sealing agent applied to the gas piping at the time of piping construction becomes the gas valve device 7 When it penetrates inside and adheres to the contact portion between the pressing portion 76a and the pressure receiving portion 77a, the pressing portion 76a is strongly fixed to the pressure receiving portion 77a, and the pressing portion 76a can not be pulled away from the pressure receiving portion 77a.

  Therefore, in the present embodiment, at least one of the pressing portion 76a and the pressure receiving portion 77a, for example, the pressing portion 76a is provided with an annular convex portion 76b as shown in FIG. 6, and the pressing portion 76a and the pressure receiving portion 77a It is in line contact. According to this, the contact area between both the pressing portion 76a and the pressure receiving portion 77a is reduced, and therefore, even if the sealing agent adheres to the contact portion between the pressing portion 76a and the pressure receiving portion 77a, the adhesion is weakened. The pressing portion 76a can be separated from the pressure receiving portion 77a.

  As shown in FIG. 7, at least one of the pressing portion 76a and the pressure receiving portion 77a, for example, the pressing portion 76a, is provided with a plurality of dot-shaped convex portions 76c at intervals in the circumferential direction. The same effect can be obtained even if the pressure receiving portion 77a and the pressure receiving portion 77a are in point contact with each other. In this case, with the pressing portion 76a in contact with the pressure receiving portion 77a, the pressing portion 76a, that is, the closing valve portion 732a of the control valve valve body 732 and the pressure receiving portion 77a, that is, the control valve seat 731. There is no need to form a bypass passage 732c in the valve body 732 for the control valve, since an air space through which the gas flows is secured therebetween.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, although the flow control valve 73 is incorporated in the gas valve device 7 in addition to the electromagnetic safety valve 72 in the above embodiment, the flow control valve 73 may be omitted. Moreover, although the heating cooker of the said embodiment is a stove, this invention is applicable similarly to the gas valve apparatus for heating cookers other than a stove.

DESCRIPTION OF SYMBOLS 1 ... Cooker main body, 12 ... Point fire-extinguishing button (point fire-extinguishing operation member), 3 ... Burner, 5 ... Gas supply path, 7 ... Gas valve apparatus, 71 ... Valve casing, 72 ... Solenoid safety valve, 721 ... Valve seat for safety valves , 722: valve body for safety valve, 722a: valve shaft, 723: valve spring, 724: adsorption piece, 725: electromagnet, 74: motor, 76: operating rod, 76a: pressing portion, 76b, 76c ... convex portion, 77 ... Valve seat member 77a: Pressure receiving portion.

Claims (3)

A gas valve device for a heating cooker interposed in a gas supply path to a burner of a heating cooker comprising a burner for heating a food to be cooked and a point fire extinguishing operation member operated to ignite and extinguish the burner. There,
An electromagnetic safety valve, an operation rod axially driven by a motor, and an axially movable valve seat member are provided in the valve casing, and the electromagnetic safety valve is configured such that one in the axial direction is forward, the other in the axial direction With the valve seat member facing the forward direction, the valve body for the safety valve facing the valve seat, and the valve body for the safety valve biased in the backward direction. A valve spring to be seated on the safety valve seat, an adsorption piece connected to the safety valve body via a valve shaft extending in the forward movement direction, and an electromagnet facing the adsorption piece,
The operating rod is provided with a pressing portion facing the pressure receiving portion facing the backward movement direction provided on the valve seat member, and movement of the valve seat member in the backward movement direction to the safety valve seat in the valve casing A valve seat stopper for stopping at a predetermined return end position where the valve body can be seated and a valve seat spring for urging the valve seat member in the return direction are provided, and the operating rod is moved in the forward movement direction The pressure member is in contact with the pressure receiving portion to push the valve seat member in the forward direction from the return end position, and the safety valve seat is in contact with the safety valve, so that the safety valve is used as an electromagnet. In a device that is pushed against the biasing force of the valve spring to the valve opening position where the suction piece abuts,
Before the ignition operation by the point fire extinguishing operation member is performed, the operation rod is in a state in which the pressing portion is in contact with the pressure receiving portion or in a state of approaching a predetermined minute distance from the pressure receiving portion of the valve seat member existing at the return end position. A gas valve device for a heating cooker, which is moved to a predetermined standby position and made to stand by.   The standby position is set to a position of the operating rod in a state where the valve body for safety valve is in a position close to a predetermined minute distance from the valve opening position or the valve opening position. Gas valve device for a heating cooker as described. The gas valve according to claim 1 or 2, wherein at least one of the pressing portion and the pressure receiving portion is provided with a convex portion such that the pressing portion and the pressure receiving portion are in line contact or point contact. apparatus.

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