JP3050525B2 - Gas control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument plug body having a gas flow path which can communicate with a burner, and an opening degree of the gas flow path for changing and adjusting the heat of the burner between high and low heat. , A valve element for adjusting the flow rate of fuel gas by changing the pressure, a heating power adjustment lever for changing and adjusting the heating power of the burner by operating the valve element, and an ignition operating device for operating an ignition device for igniting the burner When the ignition operation tool is operated to the ignition position, the valve body is operated to a medium heat position between high heat and low heat to change and adjust the flow rate of fuel gas to an amount suitable for ignition. The present invention relates to a gas amount adjusting device configured as described above.

[0002]

2. Description of the Related Art In such a gas amount adjusting device, when an ignition device is operated to ignite a burner, if the amount of fuel gas supplied to the burner is large, the fuel is ignited more than necessary, and then the gas is In some cases, the amount must be adjusted. Conversely, when the amount of fuel gas is small, reliable ignition may not be possible. Therefore, conventionally, Japanese Utility Model Laid-Open No. 4-1296 has been proposed.
As disclosed in Japanese Patent No. 45, when the ignition operating tool is operated to the ignition position, the valve body that changes and adjusts the degree of opening of the gas flow path in conjunction with the operation to the ignition position is switched between high and low heat. An arrangement for forcibly moving to a medium fire position has been proposed. According to the device disclosed in this publication, an operation pin extending from a valve body that changes and adjusts the degree of opening of the gas flow path is pressed and moved toward the medium fire when the operation pin is on the high heat side. And a rotating member for pressing and moving to the medium fire side when it is on the low fire side, and the valve body is moved to the medium fire side at the time of ignition by these two rotating members. Met.

[0003]

Therefore, in the apparatus disclosed in the above publication, it is necessary to move the valve body to the medium ignition position by using a two-way valve.
One rotating member is required, the number of parts is large, the structure is complicated, and there is a disadvantage that the cost is inevitably high.

The present invention has been made to overcome the above-mentioned drawbacks, and has as its object to reduce the number of parts by using only one member which moves in conjunction with the operation of the ignition operating tool to the ignition position. Another object of the present invention is to provide a gas amount adjusting device capable of reliably operating a valve body to a medium ignition position at the time of ignition by using one moving member while simplifying the structure.

[0005]

In order to achieve this object, according to the first aspect of the present invention, a position setting for setting one ignition position which is interlocked with an ignition operating tool for operating an ignition device for a burner. The member is rotatably attached to the appliance plug main body, and the position setting member is configured to move to the ignition setting position in conjunction with the operation of the ignition operating tool to the ignition position,
When the valve element is on the high-fire side, the high-fire-side pressing surface that acts on the pressed part extending from the valve element, and the low-fire-side pressing surface that acts on the pressed part when the valve element is on the low-fire side. Is provided on the position setting member, and the valve body is operated to the medium fire position by the action of the high-fire side pressing surface and the low-fire side pressing surface accompanying the movement of the position setting member to the ignition setting position . ,
In addition, the heating power adjustment lever and the position setting member are the same.
It is mounted so as to be rotatable around the rotation axis. That is,
By the movement of one position setting member, even in low heat side there valve body in high heat side, so cut with be manipulated to a medium heat position suitable the valve body to the ignition, the number of components And simplification of the structure can reduce manufacturing costs.
Can also operate to medium heat position of the valve body, performs by acting directly on the pressed portion of the extending the high heat-side pressing surface and low heat side pressing surface provided on the positioning member from the valve body Therefore, the operation of the valve element to the medium fire position is also ensured, and the valve element can be reliably operated to the desired position. Moreover, the valve
The position setting member acting on the pressed part extending from the body
Since it is attached to the main body so that it can rotate,
The movement is smoother and easier than
The attachment structure is simpler and the position setting member can be rotated.
As a result, reliable valve body operation as described above can be performed.
Furthermore, the heating power adjustment lever and the position setting member are
It is the same because it is attached around the core so that it can rotate.
The fire-power adjustment lever and the position setting member
It is possible to place the heat adjustment lever and position setting part
Combine the materials compactly and attach it to the instrument stopper body
And rotate the heat adjustment lever and the position setting member
It is possible to share the configuration for mounting as much as possible.
In order to further simplify the structure and reduce manufacturing costs.
Can be.

[0006]

[0007]

According to the second aspect of the present invention, the valve body is slidably attached to the appliance plug main body, and the opening degree of the gas flow path is changed by sliding the valve body. Further, since the pressed portion is engaged with cam means provided on the heating power adjustment lever, the valve body is slid by the action of the cam means accompanying the rotation of the heating power adjustment lever,
For the pressed portion extending from the valve body, not only the position setting member, but also the cam means of the thermal power adjustment lever acts, and the structure can be simplified by sharing the pressed portion, In addition, in cooperation with the operation according to the first aspect , the heating power adjusting lever, the position setting member, and the valve body can be arranged close to each other, and these can be compactly assembled to the appliance plug main body.

According to the third aspect of the present invention, the ignition operating tool is a slidable slider, and the pressing portion provided on the slider is connected to the position setting member by pushing the slider to the ignition position. Since the position setting member is configured to be rotated by pressing the operation portion, it is easy to apply force as compared with the rotary type ignition operation tool, and therefore, the position setting member via the slider is provided. Rotation and sliding of the valve element can be performed smoothly. Then, a spring is provided for elastically biasing the operating portion connected to the position setting member toward the pressing portion, so that the slider can be held at the closed position and the open position, and at a position upstream of the valve body. An on-off valve for opening and closing the gas flow path is provided, the on-off valve is closed when the slider is in the closed position, and the on-off valve is opened when the slider is in the open position, and when the slider is in the open position. The position setting member is provided with an allowable space for allowing the pressed portion to relatively slide with respect to the position setting member. Therefore, in the combustion state of the burner in which the slider is in the open position, regardless of the position holding member, the thermal power The burner power can be adjusted by rotating the adjustment lever.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments applied to various gas appliances such as a gas stove and a gas oven will be described with reference to the drawings. As shown in FIGS. 1 and 2,
An instrument plug main body 2 is provided near the panel 1 on the front surface of the gas stove, and fuel gas supplied from an inlet 3 of an opening of the instrument plug main body 2 is supplied to a burner 6 from a nozzle 5 fixed to an outlet 4. It is configured as follows. This instrument stopper body 2
Is composed of a plurality of cast parts, and is assembled with a packing interposed therebetween and fixed with bolts. In this assembled state, the inlet 3 is connected to the outlet through a gas passage 7. 4 is connected.

An electromagnetic safety valve 9 as an on-off valve for opening and closing the gas passage 7 is provided at the rear end of the instrument plug main body 2, and a fixed frame 10 made of synthetic resin is fixed at the front end. A slider 11 made of synthetic resin, which is an example of an ignition operation tool, is slidably fitted in the fixed frame 10. This slider 11 has a metal valve rod 12
Is fixedly extended to the safety valve 9 side, and a valve body 1 for opening and closing the gas flow path 7 is provided on the valve rod 12.
4 are provided. Between the slider 11 and the fixed frame 10, a first coil spring 15
A second coil spring 16 is provided between the
Are interposed respectively, these two coil springs 15,
The slider 11 elastically urges the slider 11 toward the front side of the stove.

A heart cam member 17 having a substantially heart-shaped cam groove is attached to the lower surface of the slider 11, and a U-shaped pin 1 rotatably held by a fixed frame 10.
8, the free end of the heart cam member 1 penetrates the fixed frame 10.
7 is engaged with the cam groove. Since the heart cam member 17 and the like are conventionally known, a detailed description thereof will be omitted, but by the cooperative action of the heart cam member 17 and the pin 18,
The slider 11 elastically biased by the two coil springs 15 and 16 is normally held at the closed position A. When the operation button 19 rotatably attached to the panel 1 is pressed from the closed position A, the slider 11 slides toward the rear end side against the elastic force of the coil springs 15 and 16, and the maximum pushing position is reached. To the ignition position C. Thereafter, when the pressing force on the operation button 19 is released, the slider 11 is elastically restored and is held at the open position B shown in FIG. When the operation button 19 is further pressed from the open position B, the operation button 19 is elastically returned to the closed position A.
A push mechanism is configured.

Although not described in detail, a contact plate block having a fixed contact for an ignition device and a fixed contact for a safety device (not shown) is attached to one side of the fixed frame 10.
A movable contact attached to the slider 11 switches each fixed contact between a contact state and a non-contact state as the slider 11 slides. That is, when the slider 11 is at the closed position A, both the fixed contact for the ignition device and the fixed contact for the safety device are maintained in a non-contact state, and
The gas passage 7 is closed by the valve body 14, and the safety valve 9 is also elastically closed.

When the slider 11 is pushed in from the closed position A by pressing the operation button 19, the valve body 14
Is opened, the fixed contact for the safety device is switched to the contact state, and the tip of the valve rod 12 presses the safety valve 9 to open it. When the burner 6 is further pushed to the ignition position C, the fixed contact for the ignition device is switched to a contact state, and the burner 6 is ignited by an ignition device (not shown).

Thereafter, when the pressing force on the operation button 19 is released, the slider 11 returns to the open position B and is held at the position, and the fixed contact for the ignition device is switched to a non-contact state. At this time, the valve element 14 keeps the gas flow path 7 open, and the safety valve 9 is kept open by the thermoelectromotive force of the thermocouple (not shown) due to the combustion of the burner 6, so that the combustion of the burner 6 continues. Is done. Also in this open position B,
Since the fixed contact for the safety device maintains the contact state,
When the burner 6 unexpectedly extinguishes a fire, the safety valve 9 automatically closes due to a decrease in the thermoelectromotive force of the thermocouple to prevent leakage of combustion gas. When the operation button 19 is further pressed from the open position B, the slider 11 automatically returns to the original closed position A as described above.

The instrument plug main body 2 is provided with an insertion hole 20 which is opened at the front end and extends to the gas flow path 7, and a metal needle 21 as a valve is inserted into the insertion hole 20. ing. The needle 21 is slidably inserted into the insertion hole 20, and by sliding the needle 21, the tip of the needle 21 is connected to the valve hole 22 that communicates the gas flow path 7 and the outlet 4. The opening degree of the burner 6
It is configured to regulate the flow rate of the fuel gas to the fuel cell. At the tip of the needle 21, a nozzle hole 23 for setting the minimum throttle amount is formed in the axial direction of the needle 21, and in the middle of the needle 21, a metal as a pressed portion made of a separate member is formed. Operating pin 25 is inserted and fixed.

The operation pin 25 is located in a slit 26 extending from the upper surface of the instrument plug main body 2 to the insertion hole 20 for inserting the needle 21, and the slit 26 is parallel to the axis of the insertion hole 20. , An opening at the front end of the instrument plug main body 2 in the same manner as the insertion hole 20, and the upper end of the operating pin 25 is
6 is configured to protrude upward. As shown in FIG. 3, the upper end of the operation pin 25 protruding from the slit 26 engages with a heating power adjustment lever 27 rotatably supported by the instrument plug main body 2. The heat of the burner 6 can be changed and adjusted between a high heat and a low heat by a dynamic operation. Further, a cam member 28 also serving as a position setting member for setting an ignition position, which is also rotatably supported by the appliance plug main body 2, is engaged with the upper end of the operation pin 25. By rotating to the set position, the amount of fuel gas supplied to the burner 6 at the time of ignition of the burner 6 is changed and adjusted to an amount suitable for ignition.

The heating power control lever 27 is formed by bending a single metal plate, as shown in FIG.
At one end, a mounting hole 29 is formed, and the other end is connected to the lever 3.
0, and a cam hole 31 as a cam means into which the upper end of the operation pin 25 is inserted and engaged.
The cam hole 31 has an arcuate cam hole 31a centered on a position different from the bolt hole 29, and an arcuate cam hole 31a.
and a straight insertion / removal hole 31b communicating with a. The other end of the insertion / removal hole 31b is open on the lever 30 side.

The heating power control lever 27 having such a configuration is
In a state where the mounting hole 29 is fitted over the upper part of the cylindrical stepped portion 2a protruding from the upper surface of the instrument plug main body 2, it is rotatably held by a bolt 32 screwed to the instrument plug main body 2 and the lever portion 30 is turned. It penetrates the panel 1 and protrudes from the front surface of the stove above the operation button 19 so as to be rotatable in the horizontal direction. Therefore, when the lever 30 is rotated in the opening direction shown in FIG. 2, the operation pin 25 engaging with the arc-shaped cam hole 31a is forcibly moved to the front end side of the instrument plug main body 2, and the needle 21 is accordingly moved. The needle 21 slides and the tip of the needle 21 increases the opening degree of the valve hole 22. Conversely, when the needle 21 rotates in the closing direction, the needle 21 slides to the rear end side to reduce the opening degree of the valve hole 22. It is possible to adjust the amount of gas by making it smaller.

The cam member 28 is also formed by bending a metal plate and has a substantially U-shaped cross section as shown in FIG. 33 and a cam hole 34, an opening mounting hole 35 that opens laterally is formed on the lower side, and an operating section 36 is integrally formed. A receiving seat 37 for a coil spring is formed integrally with the intermediate piece connecting the two. The cam hole 34 includes an arc-shaped high-fire-side pressing surface 34a bulging toward the mounting hole 33 and an arc-shaped low-fire-side pressing surface 34b bulging toward the high-fire side pressing surface 34a. When the needle 21 is on the high-fire side, the high-fire-side pressing surface 34a presses the operation pin 25 when the needle 21 is on the low-fire side. A linear allowable space 34c is also provided to allow the operation pin 25 to slide relative to the cam member 28.

The cam member 28 having such a structure is provided below the heating power adjusting lever 27 in a state where the mounting hole 33 is externally fitted to the lower part of the columnar step 2a, and the columnar step 2a and the bolt 32 In a state where the opening mounting hole 35 is fitted to the projection 38 which is concentric with the above, the opening 38 is rotatably held by the bolt 32. That is, the thermal power control lever 2
7 and the cam member 28 are configured to be rotatable around the same axis, and the cam member 28 is interposed between a receiving seat 37 on the cam member 28 side and a receiving seat 39 on the instrument plug main body 2 side. 2 is biased in the counterclockwise direction in FIG. 2 by the mounted and held coil spring 40, and is elastically held at a predetermined position by a stopper (not shown). The pressing portion 41 formed on the cam member 28 comes into contact with the operating portion 36 of the cam member 28, and the cam member 28
Is configured to be able to rotate clockwise.

That is, as shown in FIG. 5A, the operation button 19 is operated in a state where the heating power adjustment lever 27 is turned to the high heat side and the needle 21 is located at the front end side of the appliance plug main body 2. When the slider 11 at the closed position A is pushed to the ignition position C, the pressing member 41 presses the operation piece 36, and the cam member 2 resists the elastic force of the coil spring 40.
8 is rotated clockwise. With the rotation of the cam member 28, as shown in FIG.
a forcibly moves the operation pin 25 located on the front end side of the instrument plug main body 2 to the rear end side, and the tip end of the needle 21 moves the opening degree of the valve hole 22 to a medium fire position suitable for ignition, and The burner 6 is ignited by operating the ignition device as described above. Conversely, as shown in FIG.
Is positioned on the low-fire side, and the slider 11 is moved to the ignition position C.
When the cam member 28 is rotated clockwise, as shown in FIG.
b forcibly moves the operation pin 25 to the front end side,
Is moved to the middle fire position suitable for ignition.

That is, regardless of whether the needle 21 is in the high-fire state where the needle 21 is located at the front end side of the instrument plug main body 2 or in the low-fire state where the needle 21 is located at the rear end side, the cam member is pushed with the slider 11 pushed into the ignition position C. 28 rotates to the ignition set position, forcibly moves the needle 21 to the medium ignition position suitable for ignition via the operation pin 25, and in this state, the burner 6 is ignited. Operation button 1 after ignition is completed
When the pressing force to the slider 9 is released, the slider 11 is released as described above.
Is elastically returned to the open position B, and the position is held, and accordingly, the cam member 28 also rotates counterclockwise, and the stopper shown in FIG. 5A or FIG. Is held in position. In the position holding state at the open position B, since the linear allowable space 34c provided in the cam member 28 is set so as to overlap the slit 26 for the operation pin 25, the heating power adjustment lever 27 is rotated. Thus, the heat of the burner 6 can be freely changed and adjusted.

[Another Embodiment] In the above embodiment, the needle 21 as a valve body is
Sliding reduces the flow rate of fuel gas to the burner.
And configured to adjust, but the valve body 21 and rotatable structures, configured to regulate changes the opening degree of the gas flow path 7 by its rotation, is possible to add various modifications in actual implementation it can.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of a gas amount adjusting device.

FIG. 2 is a partially cutaway plan view of the gas amount adjusting device.

FIG. 3 is a sectional view of a main part of the gas amount adjusting device.

FIG. 4 is an exploded perspective view of a heat adjusting lever and a position setting member.

FIG. 5 is a plan view showing the operation of the position setting member.

FIG. 6 is a plan view showing the operation of the position setting member.

[Explanation of symbols]

 2 Instrument plug body 6 Burner 7 Gas flow path 9 Open / close valve 11 Slider 21 as ignition operating tool 21 Valve body 25 Pressed portion 27 Fire power control lever 28 Position setting member 31 Cam means 34a High fire side press surface 34b Low fire side press surface 34c Permissible Space 36 Operating part 40 Spring 41 Pressing part A Closed position B Open position C Ignition position

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F23N 5/26 F23N 1/00 102

Claims (3)

(57) [Claims] 1. An instrument plug main body having a gas flow path capable of communicating with a burner, and a fuel gas by changing an opening degree of the gas flow path so as to change and adjust the heat of the burner between high heat and low heat. A valve body for adjusting the flow rate of the burner, a heating power adjustment lever for operating the valve body to change and adjust the heating power of the burner, and an ignition operating tool for operating an ignition device for igniting the burner. When the operating tool is operated to the ignition position, the valve body is operated to the middle fire position between high and low heats to change and adjust the flow rate of fuel gas to an amount suitable for ignition. A gas amount adjusting device, wherein a position setting member for setting one ignition position that moves to an ignition setting position in conjunction with an operation of the ignition operation tool to an ignition position is rotatably attached to the appliance plug main body. , When the valve element is on the high-fire side, A high-fire side pressing surface acting on the extended pressed portion and a low-fire side pressing surface acting on the pressed portion when the valve element is on the low-fire side are provided on the one position setting member, and the position setting thereof is performed. Ri configured tear to operate the valve body by the action of the high heat-side pressing surface and the low heat-side pressing surface caused by the rotation of the ignition set position of the member to a medium heat position, and the thermal power adjusting lever And the position setting unit
A gas amount adjusting device in which a material is rotatably mounted around the same rotation axis . 2. The valve body can be slid with respect to an instrument stopper main body.
The gas flow path is opened by sliding the valve body.
The stirrer is changed, and
The pressed portion is engaged with the cam means provided on the
The valve body is slid by the action of the cam means accompanying the rotation of the lever.
The gas amount adjusting device according to claim 1, wherein the gas amount adjusting device is configured to be operated. 3. A slider on which the ignition operating device is slidable.
The slider to the ignition position.
The pressing part provided on the slider is connected to the position setting member.
Press the operation unit to rotate the position setting member.
And an operating unit connected to the position setting member is pressed by the pressing unit.
A spring for elastically biasing the slider is provided, and the slider is
The position can be held between the closed position and the open position, and
An on-off valve that opens and closes the gas flow path upstream of the valve
Closing the on-off valve when the slider is in the closed position,
The on-off valve is configured to open when in the open position
When the slider is in the open position,
Allowable air to allow relative sliding of the pressure part to the position setting member
3. The gas amount adjusting device according to claim 2, wherein a space is provided on the position setting member .