JPH02609B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a technique for adjusting the flame of a gas burner or the like installed in a gas appliance such as a gas stove by using a switch.

(Background Art) Conventionally, for example, in a gas stove, the size of the flame of the gas burner is adjusted using a rotary adjustment knob provided on the front surface. For this reason, when making the flame smaller, it is possible to turn the adjustment knob too much and end up extinguishing the flame, or because there is a pot, etc. on top of the gas burner, the flame cannot be seen, and when turning the adjustment knob, the flame cannot be seen. It was inconvenient to use as it had to be done while peering down.

Therefore, the inventor thought of using a push-in type flame changeover switch to switch the flame to a predetermined size discontinuously, but the flame changes rapidly and discontinuously from a large flame state to a small flame state. When this switch is made, the amount of gas supplied to the gas burner is drastically reduced, which may cause the flame of the gas burner to go out, and if left unnoticed, this can lead to a gas leakage accident.

(Object of the Invention) The present invention has been made in view of the above-mentioned background art, and its purpose is to easily change the size of the flame by using a push-in type flame selection switch. To provide a flame adjustment device for a gas appliance that can be set to a predetermined size, is easy to use, and is free from the fear of the flame being suddenly switched to a small flame state and extinguished.

(Disclosure of the Invention) The flame adjustment device for a gas appliance of the present invention is a gas appliance that has a plurality of push-in flame switching switches for switching the flame size of a gas burner in multiple stages, and is a gas appliance that has a plurality of push-in flame switching switches for switching the flame size of a gas burner in multiple stages. It has a first small flame switching switch, a second small flame switching switch like a small flame switch, a third flame switching switch like a medium heat switch, a large flame switch, etc., and the second to fourth flame switching switches. It is possible to freely switch between the flame selector switches, and when switching to the first flame selector switch, the flame extinguishing prevention mechanism is used so that it can only be done from the state where the second flame selector switch is turned on. This has achieved the above objectives and ensured ease of use and safety.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Although the case of a gas stove will be described as an example, it goes without saying that other gas appliances may be used.

Figures 1 and 2 show the front and plane views of the gas stove A. Gas burners 1 are provided on the left and right sides of the top, respectively, and a grill 2 for grilling fish etc. is provided in the center of the front.
is provided. This gas stove A is operated by a push-type (so-called piano touch) switch, and the right switch group operates the right gas burner 1, and the left switch group operates the left switch. It operates the gas burner 1, and each includes an ignition switch 3, a large fire switch 4,
It consists of a medium flame switch 5, a small flame switch 6, a simmering flame switch 7, and an extinguishing switch 8, and a flame switching switch is constituted by a large flame switch 4, a medium flame switch 5, a small flame switch 6, and a simmering flame switch 7. . Further, 9 and 10 are switches for igniting and extinguishing the grill, and 12 is a switch for opening the door 11 of the grill 2.

The invention is implemented in a part for a gas burner 1. First, when the ignition switch 3 is pushed all the way in, the main valve 13 opens and the pilot valve 14 for the pilot burner (not shown) also opens, and an ignition device (not shown) that continuously discharges the igniter. The pilot burner is lit.
Further, in conjunction with the pushing operation of the ignition switch 3, the conflagration switch 4 is also turned on, the conflagration valve 15 is opened, and the gas burner 1 is ignited by the pilot burner in a conflagration state. After this, when you release your finger that was pushing in the ignition switch 3, the ignition switch 3
And the big fire switch 4 goes down a little and stops in the closed state, and the main valve 13 and the big fire valve 1
5 remains open, only the pilot valve 14 is closed to extinguish the pilot burner, and the gas burner 1 can be used even in a large fire state. Next, turn the medium heat switch 5
Alternatively, when the small fire switch 6 is pushed in, the ignition switch 3 is maintained in the on state, but the large fire switch 4 is returned to its original state, and the medium heat valve 16 or the small fire valve 1 is turned on.
7 opens and the flame of gas burner 1 becomes medium or small flame. In this way, large fire, medium fire, and small fire are
They can be freely switched alternately by a large fire switch 4, a medium heat switch 5, and a small fire switch 6, respectively. However, if you directly switch from a large or medium flame to a low flame with the smallest flame, there is a risk that the flame of gas burner 1 will go out, so in order to press the low flame switch 7, first press the low flame switch 6 to set the flame to a low flame. It is designed so that it cannot be pressed unless it is done by someone above.
Finally, when the fire extinguisher switch 8 is pushed in, all switches 4, 5, 6, and 7, including the ignition switch 3, return to their original state, and the main valve 13 and each switching valve 1
5, 16, 17, and 18 are closed, and the gas is doubly sealed.

A specific configuration for performing the above operations will be explained. As shown in FIG. 3, this is broadly divided into a switch arrangement section 19, a switch switching mechanism section 20, a valve device 21, and a gas burner 1. The switch arrangement section 19 includes an ignition switch 3, a large fire switch 4, a medium heat switch 5, a small fire switch 6, a simmering fire switch 7, and an extinguishing switch 8, which are rotatably supported by a rotary support shaft 22, and are connected to a gas switch. They are exposed in a row on the front of filter A, and can be pressed down with your fingertips, like the keys on a piano.

Next, the switch switching mechanism 20 is made up of components as shown in FIG. Attach the caulking claw 28 to the side plate 25.
Insert it into the front crimping hole 29, and tighten both crimping claws 24, 2.
8 is expanded and fixed to the side plate 25, and the front and rear plates 27, 23
are vertically opposed, and both ends of the cam plate 31 are inserted into the cam plate receiving holes 30 of the side plates 25 between the front and rear plates 27 and 23, and the cam plate 31 is supported so as to be slidable left and right. The cam plate 31 is biased to the left by a spring 33 which is inserted externally. In addition, 34 of the side plate 25 is the rotation support shaft 2.
This is a hole for inserting 2, and 35 of the rear plate 23
is a mounting hole. 36, 37, 38, 39,
40, 41 are each switch 3, 4, 5, 6, 7, 8
Each slide bar 36, 37, 38, 39, 40, 41 is pushed by the front and rear plates 27, 2 so as to pass over the cam plate 31.
Each slide bar 36, 37, 38, 39 is held in the bar insertion holes 42, 43 of No. 3 so as to be slidable back and forth, and protrudes forward from the front plate 27.
Engagement holes 44 are bored in the front ends of the switches 40 and 41, respectively, and the switches 3, 4, 5, 6, 7, and 8 are connected to each other.
The engagement pin 45 protruding from the lower end of the slide bar 36, 37, 38 is inserted, and the slide bar 36, 37, 38,
39, 40, 41 are designed to slide back and forth, and each slide bar 36, 37, 38, 3
9, 40, 41 are urged back forward by a spring 48. Furthermore, a slide bar 38 for medium heat
The slide bar 39 for small fire, the slide bar 40 for simmering fire, and the slide bar 41 for fire extinguishing are common parts, and as shown in FIG. ing. The rear ends of the slide bar 38 for medium heat, the slide bar 39 for low heat, and the slide bar 40 for low heat that protrude rearward from the rear plate 23 are connected to the valve device 21.
The tips of the shafts 47 of the medium heat valve 16, the low heat valve 17, and the simmering heat valve 18 are opposed to each other. In addition, approximately at the center of the fire slide bar 37, as shown in FIG. 8, a cam pawl 49 is provided to protrude downward, and slightly behind the cam pawl 49, an interlocking pawl 50 is provided to protrude upward. The rear end of the slide bar 37 that protrudes further rearward than the rear plate 23 is opposed to the tip of the shaft 47 of the conflagration valve 15.
The slide bar 36 for ignition is as shown in Fig. 9 a, b, c.
As shown in FIG. 10, a cam pawl 51 is provided to protrude downward, and an interlocking piece 52 extends substantially horizontally to the left (toward the conflagration slide bar side), so that the upper surface of the conflagration slide bar 37 It faces the front surface of the interlocking pawl 50, and the pilot valve 14 is located further above.
An ignition operation bar 53 for operating the ignition operation bar 53 is integrally provided, and this ignition operation bar 53 is slidably inserted into a through hole 54 of the rear plate 23. The rear end has a main valve 13 and a pilot valve 1, respectively.
4 and are opposed to the tips of the respective shafts 47.
As shown in FIG. 6, the cam plate 31 has cam holes 55, 56, 5 shaped as shown in order from right to left.
7, 58, 59, 60 are punched out, 55
is a cam hole for ignition, 56 is a cam hole for large fire, 57
is a cam hole for medium heat, 58 is a cam hole for small heat, 59 is a cam hole for medium heat.
The cam hole 60 is for fire extinguishing, and the fire extinguishing mechanism is composed of cam holes 58, 59, each of which has a cam hole 55, 56, 57, 5.
8, 59, 60 have corresponding slide bars 3
Cam claws 5 of 6, 37, 38, 39, 40, 41
1, 49, 46, 46, 46, 46 are inserted. A stopper piece 61 hangs downward from the front edge of the cam plate 31, and the stopper piece 61 has cam holes 55, 56, 57, 58, 59 through which the cam pawls 46, 49, 51 pass during assembly. , 60 is provided with a notch 62 for insertion into the inside.
The cam pawls 46, 49, 5 are activated by the operating force of the spring 48.
During normal operation, the cam plate 31 does not move to a position where the notch 62 overlaps the cam claws 46, 49, 51, so that the cam plate 31 does not come off through the notch 62. A first inclined side 63 and a first locking side 64 are formed on the right edge of the cam hole 55 for ignition, and a second slope side 65 and a second locking side are formed on the right edge of the cam hole 56 for ignition. Side 66 and second unlocking oblique side 6
A third inclined side 68, a third locking side 69, and a third unlocking oblique side 70 are formed on the right edge of the cam hole 57 for medium heat. The right edge of the hole 58 has a fourth inclined side 71 and a fourth locking side 72.
A fourth unlocking oblique side 73 is formed, and a push lock side 7 is formed on the right edge of the cam hole 59 for simmering.
4, a fifth inclined side 75, and a fifth locking side 76, and a sixth locking release oblique side 77 is formed at the right edge of the fire extinguishing cam hole 60. Here, each cam hole 55, 56, 57, 58, 5 shown in FIG.
Dimensions a, b, c, d, e, P, Q in 9, 60,
Dimensions m, n, t of each slide bar 37, 36 for large fire and ignition shown in R and FIGS. 8 and 9b
There is a relationship of a<b<c<d<e P<Q P<R m-n>P R-t>P+(m-n).

However, at the beginning (when not in use), the cam claws 46, 49, 51 of each slide bar 36, 37, 38, 39, 40, 41 are inserted into the cam holes as shown in FIG.
It is located at the front right corner of numbers 5, 56, 57, 58, 59, and 60. From this, when the ignition switch 3 is pushed in with a finger, since there is play between the interlocking pawl 50 and the interlocking piece 52 (m-n>O), only the ignition slide bar 36 moves independently. (See FIG. 11) Push the main valve 13 open, and the interlocking piece 52 hits the interlocking pawl 50 (see FIG. 12). Furthermore, when the ignition switch 3 is pushed in, the large fire slide bar 37 is pushed by the interlocking piece 52 and moved together, and the ignition operation bar 53 pushes open the pilot valve 14 and pushes the ignition device switch to start the pilot by continuous discharge. The burner is ignited, and at the same time, the large flame slide bar 37 pushes open the large flame valve 15, and the pilot burner fires the gas burner 1.
A conflagration is lit (see Figure 13). After this,
When the ignition switch 3 is released, both slide bars 36, 3
7 returns to the front, and the cam pawl 51 of the slide bar 36 for ignition stops when it hits the first locking side 64, keeping the main valve 13 in the open state, and the slide bar 37 for ignition stops when the cam pawl 49 hits the first locking side 64. The flame of the gas burner 1 is maintained at a large flame by hitting the second locking edge 66 and stopping. At this time, the pilot valve 14 is closed and the pilot burner is off, and there is a distance m-n between the interlocking piece 52 and the interlocking pawl 50. Next, when the medium heat switch 5 is pressed, the medium heat slide bar 38 moves backward, and the cam pawl 46 moves to the third position.
Since the cam plate 31 is moved to the left by an amount b by pushing the inclined side 68, the cam pawl 49 for large and small sizes comes off the second locking side 66 of width b and returns to its original position, and at the same time the valve 16 for medium heat is turned off for medium heat. is pushed open by the slide bar 38, and the flame changes from a large flame to a medium flame. When the medium heat switch 5 is pushed further, the cam pawl 46 for medium heat moves to the third position.
Since the cam plate 31 is moved by a distance c (c>b) larger than the width b of the second locking side 66 by pushing the unlocking oblique side 70, the fire slide bar 37 is reliably returned to its original position. The width d of the stop edge 64 is the width d of the cam plate 31
is larger than the moving distance c (c<d), so the main valve 13 is kept open. In this way, when the fire is set to a large fire or a medium fire, the simmering cam pawl 46 engages with the push lock side 74 of the cam hole 59, and the simmering switch 7 cannot be pushed in, causing a large fire or The flame cannot be changed from medium to simmering. Next, when the large flame switch 4 or the small flame switch 6 is pushed in, the same operation as above is performed and the flame is switched from medium flame to large flame or small flame. However, cam hole 58 for small fire
The width a of the fourth locking side 72 is formed short and is the same as the width a of the push-lock side 14 (it may be shorter than the width of the push-lock side 14).
Therefore, when the cam pawl 46 engages with the fourth locking side 72 and is set to the small flame, the cam plate 31 has not returned sufficiently to the right, and the cam pawl 46 for the simmering flame is pushed into the lock side. 74 and is unlocked. Therefore, when the simmer switch 7 is pushed in from a small flame state, the fifth inclined side 75 is pushed by the cam pawl 46 and the cam plate 31 moves by a distance b, causing the cam pawl of the small flame to move. 46
is removed from the fourth locking side 72, the slide bar 39 returns, and the simmering valve 18 is pushed open by the simmering slide bar 40, switching the flame from a small flame to a simmering flame. Note that the cam hole 59 for the simmering flame is not provided with a lock release oblique side, but the gas flow rate is small for both the small flame and the simmering flame, so it is safe even if the small flame valve 17 and the simmering valve 18 are opened at the same time. This is because there is no problem. Further, when the large fire switch 4 or the medium heat switch 5 is pressed from the simmering state, the simmering slide bar 40 returns and the cam pawl 46 engages with the push lock side 74 again. Finally, when the fire extinguishing switch 8 is pressed, the sixth unlocking oblique side 77 is pushed by the cam claw 46 of the extinguishing slide bar 41, and the cam plate 31 moves to the left by e (e>d), and the ignition slide The bar 36 also comes off the first locking side 64 and the first
1 Return all valves 13, 1 as shown in the figure.
4, 15, 16, 17, and 18 will be closed.

The valve arrangement 21 is then shown in FIGS. 15-23. The valve device 21 has a gas flow path formed in a casing consisting of a casing body 78 and a lid 79, and various valves are housed in the gas flow path. As shown in FIG. 15, the lid 79 is airtightly attached to the back of the casing body 78 with screws 81 via a gasket 80, and there is a main valve chamber between the back of the casing body 78 and the lid 79. 8
2 and a switching valve chamber 83 are formed, and both valve chambers 82 and 83 are airtightly partitioned by a partition wall 84, and a pilot valve chamber 85 is formed above the main valve chamber 82. . In addition, as shown in FIG.
A connection port 87 for connecting the gas supply pipe 86 is provided on the lower surface, and this connection port 87 communicates with the inlet 82a of the main valve chamber 82. Further, the outlet 82b of the main valve chamber 82 is branched into an upper and lower part, with the upper part communicating with the inlet 85a of the pilot valve chamber 85, and the lower part communicating with the inlet 83a of the switching valve chamber 83. The main valve 13 consists of a shaft 47 and a rubber valve membrane 89, and the shaft 47 is airtightly inserted into a through hole 90 formed between the front surface of the casing body 78 and the main valve chamber 82 via an O-ring 91. The shaft 47 is opposed to the end of the ignition slide bar 36 as described above.
A valve membrane 89 is attached to the end of the shaft 47 on the main valve chamber 82 side.
A compression spring 92 is tensioned between the valve membrane 89 and the lid body 79, and the force of this spring presses the valve membrane 89 against the wall of the main valve chamber 82, thereby opening the main valve chamber 82. The main valve chamber 82 is airtightly closed between the inlet 82a and the outlet 82b, and when the shaft 47 is pushed, the valve membrane 89 separates from the chamber wall and the main valve chamber 82 opens. When the large diameter portion 93 at the tip of the pilot valve 14 is fitted into the inner periphery of the O-ring 96 as shown in FIG. However, when the shaft 47 is pushed in by the ignition operation bar 53 and the narrow diameter part 95 comes to the position of the O-ring 96, gas passes through the pilot valve 14 and is connected to the pilot burner on the upper surface of the casing body 78. Gas can be supplied to the connecting portion 94. The pilot valve 14 may be of a type in which the valve membrane 97 at the end of the shaft 47 is pressed against the wall of the pilot valve chamber 85, as shown in FIG.
In front of the switching valve chamber 83, a large fire valve chamber 98, a medium fire valve chamber 99, a small fire valve chamber 100, and a simmering valve chamber 101 are provided independently from each other. A common gas passage 103 passing through the main outlet 102 on the upper surface of the casing body 78 is bored, and between the upper surface of each of the valve chambers 98, 99, 100, 101 and the common gas passage 103, there are gas flow rate adjustment holes 104, 10.
5, 106, and 107. Here the main outlet 102 is connected to the gas burner 1 . In addition, gas flow rate adjustment holes 104, 105, 1
06 and 107 have different inner diameters, and the size of the flame is adjusted by restricting the gas flow rate here. Between the switching valve chamber 83 and the large-fire valve chamber 98, medium-heat valve chamber 99, small-fire valve chamber 100, and simmering valve chamber 101, there are a large-fire valve 15, a medium-heat valve 16, a small-fire valve 17, and a simmering valve, respectively. It can be closed by a valve 18. That is, each valve chamber 98, 99, 100,
A through hole 1 is provided between 101 and the casing body 78.
09, 110, 111, 112 are drilled, and these through holes 109, 110, 111, 112
The shafts 47 are hermetically and slidably inserted through the O-rings 91, and a valve leaflet 89 is attached to the tip of each shaft 47, and a compression spring 92 is inserted between the valve leaflet 89 and the lid body 79. Therefore, the valve membrane 89 is pressed against the chamber wall of the switching valve chamber 83 and the switching valve chamber 83
and each of the valve chambers 98, 99, 100, 101 can be airtightly closed, thereby forming a gas flow path between the large fire valve 15, the medium fire valve 16, and the small fire valve. 17. Since it is double-sealed by either the simmering valve 18 or the pilot valve 14 and the main valve 13, safety is ensured even if one valve should become clogged due to dirt or the like. I'm starting to be able to do it. Shaft 4 of each valve 15, 16, 17, 18
7 is each slide bar 37, 38, 3 as mentioned above.
9 and 40, and slide bar 3
When the shaft 47 is pushed by the shafts 7, 38, 39, 40, the valves 15, 16, 17, 18 are opened, and the gas flow rate is throttled to a predetermined amount by the gas flow rate adjustment holes 104, 105, 106, 107. The size of the flame of burner 1 is adjusted. Furthermore, Figure 19a,
b shows another example of the gas flow rate throttling mechanism.
This is for each valve chamber 98, 99, 100, 10
An adjustment piece 114 having T-shaped gas flow rate adjustment holes 104, 105, 106, and 107 each having a different diameter is inserted into a vertical hole 113 of equal diameter formed between the gas passage 1 and the common gas passage 103. It is something that

In the above embodiment, the simmering flame switch, which has the smallest flame, cannot be pressed in except when the medium flame switch is turned on. If the fire is connected to a large flame, the small flame switch with the smallest flame cannot be pressed from a large flame, and the small flame switch can only be pressed from a medium flame.
Various design changes are possible.

In the above description, the flame-extinguishing prevention mechanism is activated when switching from the large flame switch 4 or the medium flame switch 5 to the simmering flame switch 7, but the design of this flame-extinguishing prevention mechanism can be changed in various ways, and in the above embodiment, For example, it is also possible to disable switching from the large fire switch 4 to the small fire switch 6. Furthermore, in the case where the flame changeover switch is provided in multiple stages, it is also possible to prevent the flame from changing over three or more stages, for example.

(Effects of the Invention) Since the present invention is configured as described above, it has the advantage of being easy to use, as it can be easily set to a predetermined size of flame with a single touch by pressing the push-in flame selection switch. . Moreover, it has a first small flame switching switch like a simmering flame switch, a second small flame switching switch like a small flame switch, a third flame switching switch like a medium flame switch, a large flame switch, etc. , second~
It is possible to switch freely between the fourth flame selector switch, and the flame extinguishing prevention mechanism allows switching to the first flame selector switch only when the second flame selector switch is turned on. When cooking, you can freely switch the 2nd to 4th flame selection switches regardless of the order and instantly choose between low, medium, and large heat, allowing you to conveniently cook with the appropriate flame according to the cooking purpose. In addition, since the smallest flame can only be produced from the second smallest flame, there is no danger of the flame being extinguished due to the sudden reduction in the amount of gas, and there is an advantage that gas leakage can be prevented and stability is high.

[Brief explanation of drawings]

Fig. 1 is a front view of a gas stove according to an embodiment of the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is an X of Fig. 1.
- X-ray cross-sectional view; Figure 4 is a plan view of the switch switching mechanism and valve device; Figure 5 is an expanded plan view of the switch switching mechanism; Figures 6a and b are plan views of the cam plate; Front view, Figure 7 is a cross-sectional view of the slide bar for medium heat, large fire, slow fire, and fire extinguishing, Figure 8
The figure is a cross-sectional view of the slide bar for large fires, Figure 9a,
Figures b, c and 10 are a plan view, side view, bottom view and front view of the slide bar for the main switch, Figures 11 to 14 are explanatory diagrams of the operation of the slide bar for the main switch and for large fires, Figure 15 is a horizontal sectional view of the valve device, and Figure 16 is the Y-- in Figure 15.
17 is a sectional view taken along the line Z--Z of FIG. 15, and FIG. 19a is a sectional view showing another example of the gas flow rate throttling mechanism. Figure 19b is a sectional view taken along the line W--W in Figure a, Figures 20 to 22 are rear, top and bottom views of the casing body, and Figure 23 is a front view of the lid. be. 1... Gas burner, 4, 5, 6, 7... Large fire switch constituting the flame switching switch in the embodiment,
Medium flame switch, small flame switch, and simmering flame switch, 58, 59...Cam holes constituting the flame-extinguishing prevention mechanism in the embodiment.

Claims (1)

[Claims] 1 Gas appliances that have multiple push-in flame switching switches for switching the flame size of a gas burner in multiple stages, including the first small flame switching switch such as a simmering flame switch, and a small flame switching switch such as a small flame switch. It has a second small flame switch, a medium heat switch, a third flame switch, a large fire switch, etc., and can be freely switched between the second to fourth flame switch. A flame adjustment device for a gas appliance, characterized in that when switching to the first flame changeover switch, the flame extinguishing prevention mechanism can only be used when the second flame changeover switch is turned on.