JPH0658535A - Gas control device - Google Patents

Abstract

PURPOSE:To prevent the generation of a flame failure by installing a pertinent gas flow passage position and an extinguishment position and an ignition position before and behind an operation pushbutton switch and installing on the outer periphery of a heating power control pushbutton switch a reset means which resets the heating power control pushbutton switch which interlocks with the depressing operation of the operation pushbutton switch to a strong heating power position. CONSTITUTION:There is installed an operation pushbutton switch 2 which may move in the longitudinal direction and set up at three different positions, say, an operation position which continuously maintains a gas flow passage opened state, an extinguishment position which closes the gas flow passage and an ignition position which ignites. A heating power control knob 24 is mounted to the outer periphery of the operation pushbutton switch 2 in such a fashion that it may be rotated. There is also installed a reset means which interlocks with the depressing operation of the operation pushbutton switch 2 and rests the heating power control knob 24 to a strong power position. This construction makes it possible to eliminate the need for purging the flow passage and ignite only by depressing the operation pushbutton switch 2 and ignite without failures during ignition time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas control device for a gas appliance.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Laid-Open No. 63-251718, an operation button is rotatable with respect to a main body of a device and movable in a front-rear direction, and the operation button is pushed all the way in to ignite. Here, by releasing the pressing on the operation button, the operation button protrudes forward and the state where the gas passage is open is maintained, and by rotating the operation button, the heat power is adjusted, and the operation button protrudes forward. It is known that the fire is extinguished when the operation button is pushed in the used state. Then, in order to improve the ignition performance at the time of ignition, purge ignition is performed only at the time of ignition and a large amount of gas is temporarily flown to perform ignition.

[0003]

However, in the former conventional example described above, it is necessary to separately form a purge flow path in the gas flow path, and in the case of extinguishing the fire, the When ignited, the amount of gas temporarily increases by ignition due to the above-mentioned purge flow path, but ignition is performed, but when the operation button is released, the purge flow path closes and returns to the set heating power, and suddenly like the rapid throttle. There was a problem that the air was overexposed at the moment of returning to the small fire, and the fire ended because of returning to the small fire.

The present invention has been made in view of the above-mentioned problems of the conventional example, and its purpose is to eliminate the need for a purge flow path as in the conventional case, and to ignite an operation button. It is an object of the present invention to provide a gas control device that can be easily ignited with a single touch, and that can reliably perform ignition without fear of misfiring even when the operation button is released.

[0005]

A gas control device of the present invention is provided with an operation button 2 which is movable in the front-rear direction, and a state in which a gas passage G is opened at three different positions of the operation button 2 in the front-rear direction. A continuously used use position, a fire extinguishing position with the gas passage G closed, and an ignition position for igniting are provided, and a heat power adjusting knob 24 for operating the heat power adjusting means is turned around the operation button 2. It is movably fitted and is provided with reset means for resetting the heat power adjusting knob 24 to a large fire position in synchronization with the pressing operation of the operation button 2, and such a structure is adopted. By doing so, the problems of the conventional example described above are solved and the object of the present invention is achieved.

[0006]

According to the present invention, the heat power adjusting knob 24 for operating the heat power adjusting means is rotatably fitted on the outer peripheral portion of the operation button 2, and the heat power is adjusted in association with the pressing operation of the operation button 2. Since the reset means for resetting the operating knob 24 to the large fire position is provided, ignition and extinguishing are performed by pressing the operating button 2, and in the ignited state, the thermal power adjusting knob 2 on the outer periphery of the operating button 2 is used.
4 is rotated to adjust the heat power. Then, when the operation button 2 is pressed to extinguish the fire with the firepower adjusting knob 2 positioned at the small fire position, the firepower adjusting knob is rotated to the large fire position and reset by the resetting means. As a result, when the operation button 2 is pressed and operated during the next ignition, the fire power adjusting means is always ignited in a state of large fire, and a gas amount necessary for ignition is obtained, and the operation button 2 is released. Immediately after that, a large flow rate of gas is still flowing, so that the conventional rapid throttling state does not occur and misfiring due to excess air does not occur.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. The gas control device A is a gas oven, a grill,
The gas stove or the gas appliance in which these are combined is attached near the operation panel P on the front of the appliance of the appliance main body. The gas control device A includes an ignition means, a fire extinguishing means, and a heat power adjusting means.
The gas control device A will be described below.

As shown in FIG. 2, the instrument plug body 1 is formed with an inlet 8 and an outlet 9, and the gas introduced from the inlet 8 is supplied to the burner section 10 through the outlet 9. You can do it. Inside the instrument stopper body 1, a safety valve 11 is provided in order from the vicinity of the inlet 8 toward the outlet 9.
A valve hole 12 for the main valve 13, a valve hole 14 for the main valve 13, and a valve hole 16 for the gas amount control valve 15 are formed. The safety valve 11 that opens and closes the valve hole 12 is an electromagnetic valve, and the valve body 11a of the safety valve 11 is separated from the valve hole 12 against the spring 18 by the push rod 17 that is pushed by pushing the operation button 2. The valve is opened, and the thermocoupling T electrically connected to the safety valve 11 detects the combustion in the burner section 10 with heat sensitivity, and the open state of the safety valve 11 is maintained by the heat sensitive result of the combustion. This opening is maintained regardless of the separation of the push rod 17 from the valve body 11a when the operation button 2 is returned, and when the combustion in the burner section 10 is unexpectedly extinguished and cut off, the thermocoupling T The safety valve 11, which is an electromagnetic valve, is automatically closed and closed by the exhaust heat signal from the system to ensure safety. The main valve 13 is attached to the push rod 17 in the valve hole 14 for the main valve 13, and the main valve 13 is opened by pushing the operation button 2 against the spring 19 to open the operation button 2. When the pushing force is released, the main valve 13 can be closed by returning it together with the push rod 17 via the spring 19. The gas amount adjusting valve 15 is provided in the valve hole 16 for the gas amount adjusting valve 15, and the gas amount adjusting valve 15 is inserted into and withdrawn from the valve hole 16 in conjunction with the rotation operation of the operation button 2 (described later). Then, the amount of gas from the valve hole 16 to the burner portion 10 is changed and adjusted, whereby the thermal power is adjusted, and this serves as the thermal power adjusting means.

Next, the operation system of the operation button 2 will be described in detail. As shown in FIGS. 1 and 2, the operation button 2 has a protruding portion 25 facing rearward.
And a front body 2b attached to the front side of the main body 2a. A guide member 26 is attached to the instrument plug body 1 with a screw.
The protrusion 25 is slidably fitted in the insertion hole 27 of FIG. 6, and the spring 28 biases the spring force in the direction in which the protrusion 25 pops out from the insertion hole 27. A heart cam groove 29 is provided in the protruding portion 25. The heart cam groove 29 has a shape as shown in FIGS. 11, 12, and 13, and includes a first groove 29a, a second groove 29b, and a third groove 29.
The first groove 29a is formed by connecting c to each other in a substantially heart shape.
The rear end is shallower than the third groove 29c, the front end of the third groove 29c is shallower than the rear end of the second groove 29b, and the front end of the second groove 29b is shallower than the front end of the first groove 29a. ing. The third groove 29c is formed so as to extend rearward. As shown in FIG. 9, one end of a valve lock plate 31 is rotatably attached to the side surface of the guide member 26 near the front end thereof about a shaft 30. A long hole 32 is formed in a direction intersecting the front-back direction of the member 26. A hole 33 is provided at the rear end portion of the valve lock plate 31, and this hole 33 is provided so as to communicate with the elongated hole 32 of the guide member 26 when the valve lock plate 31 is rotated. On the side surface near the rear end of the guide member 26, a shaft portion 34a at the rear end portion of the cam pin 34 having a U-shape is rotatably supported, and the shaft portion at the front end portion of the cam pin 34 is rotatably supported. 34b is inserted into the hole 33 and the long hole 32 of the valve lock plate 31, and the protrusion 2
It is inserted in the heart cam groove 29 of No. 5. Guide member 2
A valve pressing plate 35 is externally fitted to the guide member 26 so as to be movable. The valve pressing plate 35 has an opening 36.
Is provided, and the shaft portion 34 at the front end portion of the cam pin 34 is provided.
b is inserted in this opening 36. A step 37 is provided at the rear edge of the opening 36. The valve retainer plate 35 is provided with a contact portion 38, and when the operation button 2 is pushed rearward, the contacted portion 39 provided on the projecting portion 25 hits the contact portion 38 and is pushed to move rearward. ing. Further, when the contact portion 38 moves, the front end portion of the push rod 17 is pushed and operated. 11 to 13
There are three different positions in the front-rear direction of the operation button 2 which is movable in the front-rear direction with respect to the instrument stopper body 1 (a use position where the gas passage is kept open and a fire extinguishing position where the gas passage is closed). The ignition position for igniting) is shown, and the heart cam is further provided at the use position where the gas passage is kept open, the extinguishing position where the gas passage is closed, and the ignition position where ignition is performed. The positional relationship among the groove 29, the shaft portion 34b of the cam pin 34, and the elongated hole 32 is shown. That is, at the fire extinguishing position of the operation button 2 (in the embodiment, the fire extinguishing position is the position where the front surface of the operation button 2 slightly protrudes from the front surface of the operation panel P of the instrument body shown in FIG. 2) is the protrusion by the spring 28. 25 is pushed forward, but in this state, as shown in FIG.
4b is located at the hook-shaped bent portion of the rear end of the second groove 29b of the heart cam groove 29, and the operation button 2 is held and held so as not to project forward from the state of FIG. When the operation button 2 is pushed rearward against the spring force of the spring 28 in this state, the shaft portion 34b moves in the second groove 29b while being guided by the second groove 29b and moves from the front end portion of the second groove 29b to the first end. It moves to the front end of the groove 29a. This state is the pushed-in state to the innermost position, and at this time, ignition is performed as described later. Then, when the push on the operation button 2 is released from this state, the operation button 2 is moved forward by the spring force of the spring 28, and the shaft portion 34b is moved from the front end portion to the rear end portion of the first groove 29a. , From the rear end of the first groove 29a to the third
When it moves to the groove 29c and moves to the rear end of the third groove 29c as shown in FIG. 11, and when it is located at the rear end of the third groove 29c, the operation button 2 is prevented from further moving. It is designed to hold the protruding state of. That is, as shown in FIG. 4, the position where the front surface of the operation button 2 is projected forward from the front surface of the operation panel P of the instrument body is the use position.

By the way, the valve pressing plate 35 is shown in FIGS.
As shown in FIG. 3, the switch holding portion 41 is provided, and the ignition switch (FIG. 3) is operated by the switch holding portion 41 only when the operation button 2 is pushed and the valve holding plate 35 is moved backward and pushed to the innermost part. (Not shown) is operated to ignite. In this case, in the ignition position, as shown in FIG.
As shown in FIG. 5, the shaft portion 34b moves along the long hole 32, and the locking piece 31a at the rear end portion of the valve lock plate 31 is moved to the step portion 37.
Further, the push rod 17 is moved forward by the spring force of the spring 19 by releasing the pushing into the operation button 2 in this state, pushing the contact portion 38 and moving the valve pressing plate 35 forward. However, the step portion 37 of the valve pressing plate 35
As shown in FIG. 3, it hits the locking piece 31a and is prevented from moving forward. Therefore, the push rod 17 stays in a state of moving a little forward, and keeps the main valve 13 in the open state.
The on-off valve 21 is closed. Further, the operation button 2 is pushed in from the use position where the gas passage G is kept open, and the operation button 2 is moved to the fire extinguishing position as described above.
6A, the shaft portion 34b moves in the long hole 32 to disengage the locking piece 31a from the step portion 37, as shown in FIG. Then, since the push rod 17 is pushed forward by the spring force of the spring 19, the push rod 17 pushes the contact portion 38 and the valve pressing plate 35 moves forward, so that the fire extinguishing switch 42 is pushed by the switch operating portion 40. Release the fire extinguishing switch 42
The main valve 13 is closed by pressing the push rod 17 forward by the spring 19.

A thermal power adjusting knob 24 for operating the thermal power adjusting means is rotatably fitted on the outer peripheral portion of the operation button 2. That is, after the heat power adjusting knob 24 is rotatably fitted from the front of the main body 2a of the operation button 2, the front body 2b constituting the front portion of the operation button 2 is attached to the front surface of the main body 2a. In this case, the front body 2 of the operation button 2 as shown in FIG.
The front surface outer peripheral portion 2c of b has a large diameter, and a cylindrical heat power adjusting knob 24 is rotatably arranged on the rear side of the front outer peripheral portion 2c of the operation button 2 so that The outer surface of the front outer peripheral portion 2c and the outer surface of the heat power adjusting knob 24 are flush with each other. That is, when the front surface of the operation button 2 is pressed, the fire power adjustment knob 24 is prevented from being accidentally touched with a finger, and the cylindrical fire power adjustment knob 24 is pressed with a finger when the fire power is adjusted. It can be rotated and operated independently from the operation button 2.

An annular portion 46 is provided at the rear end of the heating power adjusting knob 24, and the annular portion 46 is provided with a gear 47 as shown in FIGS. Valve hole 16 in the instrument stopper body 1
The adjusting rod 48 of the gas amount adjusting valve 15 is inserted through the portion so as to be able to be pushed and pulled freely.
Is protruded, and this pin 49 is inserted into a long hole 51 formed so as to face a cylinder body 50 attached to the instrument plug body 1, and the pin 49 is projected from the cylinder body 50. 50 is rotatably fitted in the driven gear 52 and is inserted into the spiral groove 53, and the gear 47 of the annular portion 46 is driven by the driven gear 5.
It meshes with 2. Here, when the adjusting rod 48 is inserted into the tubular body 50, the adjusting rod 48 is covered with a pushing spring 60 for urging a spring force in one direction (front side in the illustrated embodiment), and one end is adjusted. The pressing spring 60 is inserted into the tubular body 50 from the front together with the adjusting rod 48 in a state of being applied to the step of the rod 48 (in this case,
The pin 49 is inserted into the elongated hole 51 of the tubular body 50 and is inserted), and a stopper cap 61 is attached to the front end portion of the tubular body 50 to elastically contact the front end of the pressing spring 60 with the stopper cap 61.
The flange 62 at the front end of the stopper cap 61 is located on the front side of the cylindrical driven gear 52 that is rotatably fitted to the cylindrical body 5 so that the driven gear 52 does not come off from the cylindrical body 5 forward. It has become.

A reset pin 90 is inserted through the front end portion of the guide member 26, and the reset pin 90 is used for the operation button 2.
The reset pin 90 has both ends thereof fitted in the cam grooves 94 on the inner surface of the cam cylinder portion 93 provided on the inner surface of the rear portion of the thermal power adjusting knob 24. One side edge of the cam groove 94 is a straight side edge 95 in a direction parallel to the pressing operation direction of the operation button 2 as shown in a development view in FIG. 5, and this straight side edge 95 is a large fire position. In addition, the other side edge facing the linear side edge 95 that is a large fire position is inclined edge 96 that is closer to the linear side edge 95 side toward the front side and further away from the linear side edge 95 toward the rear side. The rear end portion of the inclined edge 96 is a rear end linear edge portion 97 parallel to the linear side edge 95.
7 is the small fire position, and further, the front end portion of the inclined edge 96 is the front end linear edge portion 98 parallel to the linear side edge 95, and the front end linear edge portion 98 is the large fire position. .

Therefore, the operation button 2 is located in the use position where the gas passage is kept open, that is, in the use state, the operation button 2 is moved forward, and thus the operation button 2 is moved forward. The heat power adjusting knob 24 rotatably attached to the outer periphery of the second member 2 also moves forward, and therefore the reset pin 9
0 is located at the rear end of the cam groove 94. Therefore, in this state, in the range from the position where the rear end of the linear side edge 95 which is the large fire position hits the reset pin 90 to the position where the rear end linear edge 97 which is the small fire position hits the reset pin 90 (that is, The heating power can be adjusted by rotating the heating power adjustment knob 24 (in the range from large fire to small fire). On the other hand, when extinguishing a fire, the operator pushes the operation button 2 to change from the use position to the extinguishing position to extinguish the fire. Moving. In this case, when the reset pin 90 is located at the large fire position immediately before extinguishing the fire as shown in FIG.
Will be located at positions a to b in FIG. However, when the reset pin 90 is located at the small fire position immediately before extinguishing the fire as shown in FIG.
Is moved rearward, the sloping edge 96 hits the reset pin 90. Therefore, as the thermal power adjustment knob 24 moves rearward, the thermal power adjustment knob 24 rotates, and the reset pin 90 passes through the two positions to move to the extinguishing position. Then, it will be located at the position of Ro, which is the location of the great fire. As a result, when the fire is extinguished, the heating power adjusting knob 24 is always reset to the large fire position. Similarly, even if the fire is extinguished in the medium heat state, the fire power adjusting knob 24 is always reset to the large fire position when the fire is extinguished. In this way, regardless of the state of the heat power adjustment just before the fire is extinguished, when the operation button 2 is pressed to extinguish the fire, the heat power adjusting knob 24 is automatically reset to the large fire position. When igniting by pressing the front part of the, the gas will always be ignited by flowing in a large fire state, and as a result, reliable ignition can be performed without providing a purge circuit as in the past. Become. Then, immediately after ignition, when the finger is released from the front surface of the operation button 2 to release the pressure to put the gas into a use state, it is in a large fire state. As in the case of the rapid throttle, there is no excess air and there is no risk of misfire.

Reference numeral 70 in the drawing denotes a click locking body inserted in a hole provided in the outer peripheral portion of the operation button 2, which is elastically biased outward by a spring 71 and has a heating power adjusting knob 24.
Can be locked in a locking groove (not shown) provided on the inner surface of the. The locking of the click locking body 70 and the locking groove is, for example, a small fire position or a large fire position, and when the click locking body 70 is locked in the locking groove 72, a click sound is generated. It is designed to be clickable.

[0016]

As described above, according to the present invention, the operation button that is movable in the front-rear direction is provided, and the state where the gas passage is opened at each of three different positions in the front-rear direction of the operation button is continuously maintained. The operating position, the fire extinguishing position with the gas passage closed, and the ignition position for igniting are provided, and the heat power adjusting knob for operating the heat power adjusting means is rotatably fitted on the outer peripheral portion of the operation button. Since the resetting means for resetting the heat power adjusting knob to the large fire position is provided in conjunction with the operation of pressing the operation button, ignition and extinguishing are performed by pressing the operation button. The adjustment knob can be rotated to adjust the heating power, which simplifies the operation part and prevents erroneous operation.Moreover, with the heating adjustment knob in the small fire position, When the fire is extinguished by pressing the operation button By rotating the resetting knob for resetting the heat power adjustment position to the large fire position and resetting, the fire power adjusting means will always be turned on when the operation button is pressed during the next ignition without separately forming a purge flow path as in the conventional case. Ignition is performed in this state, the amount of gas required at the time of ignition is reliably obtained, and a large amount of gas is still flowing immediately after the finger is released from the operation button. As a result, misfire or the like due to excess air does not occur, and simple and reliable ignition is possible.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is a sectional view of the fire extinguishing state of the above.

3 (a) and 3 (b) are side views showing a relationship between a locking piece and a step portion in the same use state and a side view showing a positional relationship between a heart cam groove and a shaft portion in this case.

4 (a) and 4 (b) are a side sectional view and a bottom view showing the positional relationship in the combustion state of the operation button, the thermal power adjustment knob, and the reset pin of the above.

FIG. 5 is a development view of a cam cylinder portion used in the above.

6 (a) and 6 (b) are side views showing a relationship between the locking piece and the step portion in the same extinguishing state and a side view showing a positional relationship between the heart cam groove and the shaft portion in this case.

7 (a), (b), (c), and (d) are side views of operation buttons, bottom views of heart cam portions, side views of guide members,
It is sectional drawing of a guide member.

8A and 8B are a side view showing a relationship between a locking piece and a step portion in the same ignition state and a side view showing a positional relationship between a heart cam groove and a shaft portion in this case.

FIG. 9 is a partially cutaway side view of the above.

FIG. 10 is a partially cutaway side view showing the attachment of the display band and the heart cam groove of the above.

FIG. 11 is a partially cutaway side view showing the heart cam groove portion in the above-mentioned use position.

FIG. 12 is a partially cutaway side view showing the heart cam groove portion in the fire extinguishing position of the above.

FIG. 13 is a partially cutaway side view showing the heart cam groove portion at the ignition position of the above.

[Explanation of symbols]

 2 Operation buttons 24 Knob for adjusting thermal power G Gas passage

Claims (1)

[Claims] 1. An operating button which is movable in the front-rear direction is provided, and a use position in which the gas passage is continuously opened in each of three different positions of the operation button in the front-rear direction, and a fire extinguishing operation in which the gas passage is closed. A position and an ignition position for igniting are provided, and a thermal power adjustment knob for operating the thermal power adjustment means is rotatably fitted on the outer peripheral portion of the operation button, and the thermal power is adjusted in conjunction with the pressing operation of the operation button. A gas control device comprising reset means for resetting the control knob to a high fire position.