JPH025238Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention is a mechanism that allows the flames of the upper and lower burners that make up the gas grill to be adjusted individually in gas grills for grilling fish, etc. installed inside the gas table stove, and prevents gas leak accidents due to reverse operation. related to technology.

[Conventional technology]

Conventionally, there has been a mechanism for adjusting the flames of upper and lower burners that make up a gas grill. The flame changes in four stages, including extinguishing, as shown below. → → → → Upper burner Large flame Large flame Extinguishing flame Extinguishing flame Lower burner Large flame Small flame Large flame Extinguishing flame After ignition, this is normally operated as →→→, but once it is in the previous state, it is returned to the previous state. If this occurs, even if the gas becomes a large flame again in the upper burner, it will not be ignited, resulting in a gas leak accident or ignition in the lower burner, causing a small explosion. As a conventional technique for preventing such accidents, Utility Application No. 57-131625 (filing date: Showa
(August 31, 1957), but the operation between and is performed using the main operation knob, and the operation between and is performed using the adjustment knob 9 as shown in Figure 15.
5. That is, when the main operation knob is pushed and turned, the gas is ignited, and by sliding the adjustment knob 95, it is possible to switch between ~, and when the adjustment knob 95 is set to As shown in FIG. 15, the adjustment knob 95 is inside the bag-shaped cover portion and cannot be operated again, and it is no longer possible to return it to the previous state and adjust it. When the main operation knob is returned to its original position, the adjustment knob 95 is also moved to the bag-shaped cover portion 94.
It is starting to come out and return to its original state.

[Problem that the invention attempts to solve]

In the conventional example, the adjustment knob was set inside the bag-shaped cover part in the state of , making it impossible to operate, so the bag-shaped cover part protruded from the front of the gas stove and There is a problem in that the hand gets caught and gets in the way, and if the bag-like cover is made smaller, the adjustment knob that fits inside must also be made smaller, making it difficult to operate.

[Means to solve the problem]

The flame adjustment mechanism of the gas grill of the present invention includes an upper burner 3 and a lower burner 4 disposed above and below in the grill 2, a gas distributor 11 for distributing and supplying gas to the upper and lower burners 3 and 4, and a main valve. In a flame adjustment mechanism for a gas grill, the adjustment lever 68 is provided with a main operating shaft 12 for opening and closing the gas distributor 9 and an adjustment lever 68 for operating the gas distributor 11 to adjust the amount of gas distributed. 81 and an adjustment shaft 73 having an adjustment operation knob 74 at its tip protrudes from the adjustment lever 68, and when the adjustment lever 68 is operated, the upper burner 3 or the lower burner 4 is adjusted.
A lock key 82 is provided to lock the adjustment lever 68 so that it does not move by fitting into the keyway 81 when the valve is set to the flame-extinguishing state.
2 is characterized in that a release part 83 is attached to the main operating shaft 12 to push back the lock key 82 and remove the lock key 82 from the keyway 81.

[Effect]

The present invention is constructed as described above, and includes a gas distributor for distributing and supplying gas to the upper and lower burners in the grill, a main operating shaft for opening and closing the main valve, and a main operating shaft for operating the gas distributor. In the flame adjustment mechanism of a gas grill similar to the conventional example, which is equipped with an adjustment lever for adjusting the amount of gas distributed, the adjustment lever is provided with a keyway, and the upper burner or the lower burner can be set to the flame-out state by operating the adjustment lever. There is a lock key that fits into the key groove and locks the adjustment lever from moving when the burner is turned off, so there is no risk that the burner will be opened again after either the upper or lower burner has been extinguished. No gas leaks or small explosions,
It is now safe to use. Moreover, when operating the main operating shaft to close the main valve, a release part is attached to the main operating shaft to push back the lock key and remove the lock key from the keyway, so when you turn the main operating shaft to close the main valve, ,
The adjustment lever can now be operated, providing excellent functionality without the hassle of unlocking. Furthermore, a mechanism to prevent reverse operation of the adjustment lever, such as a lock key or keyway, is provided between the main operating shaft and the adjustment lever, and the flame of the upper and lower burners can be adjusted by operating the adjustment knob at the tip of the adjustment shaft protruding from the adjustment lever. Since the adjustment is made, the above-mentioned reverse operation prevention mechanism can be built into the inside of the gas stove, and the reverse operation prevention mechanism can be installed on the surface of the gas stove, unlike the conventional bag-shaped cover part. It is now possible to provide a gas stove that does not stick out and get in the way and has a clean appearance.

【Example】

The one shown in Fig. 13 is a gas stove A. Boiling burners 1 are installed on the left and right sides of the top of the gas stove A, and a fish grill is placed in the center of the gas stove A. A grill 2 used for business, etc. is provided, and a door 7 that allows the grill 2 to be opened and closed is attached to the center of the front of the gas stove A. As shown in FIG. 14, an upper burner 3 and a lower burner 4 are provided on the lower surface of the ceiling and the upper surface of the bottom of the grill 2, respectively. What is shown in FIG. 9 is a gas flow control device 8 for the grill 2, in which a main valve 9, a governor 10, and a gas distributor 11 are connected in series. The main valve 9 is opened and closed by turning the main operating shaft 12, and the main valve 9 is locked when closed.
You can unlock and open by pushing and turning.
When the main operating shaft 12 is turned in the opposite direction to close it, it will be locked as before. The main operating shaft 12 protrudes from the front of the gas stove A, and a main operating knob 13 is attached thereto. Gas flowing into the main valve 9 from the pipe 14 passes through the governor 10 and flows into the gas distributor 11, where it is branched and one side flows to the upper burner 3 through the upper burner connection port 15, and the other side flows to the lower burner connection. It is adapted to flow to the lower burner 4 through the port 16. The governor 10 keeps the gas flow rate constant by reducing changes in the gas flow rate due to fluctuations in gas pressure. That is, the inside of the diaphragm chamber 41 is divided into upper and lower parts by a rubber diaphragm 42, and a gas inlet 43 on the side of the main valve 9 and a gas distributor 11 are separated.
The side gas outlet 44 is open in the space below the diaphragm 42 of the diaphragm chamber 41, and is located at the lower end of a vertical bar 46 that is suspended into the gas outlet 44 from the center of a disk 45 that holds the center of the diaphragm 42. A valve 47 is provided so that when the diaphragm 42 rises, the opening ratio of the gas outlet 44 becomes smaller. Furthermore, a lifting block 49 that can be slid up and down is inserted into the cylindrical portion 48 above the diaphragm 42 and is fixed with a screw 50. A spring 53 is interposed between the cap 52 and the upper surface of the disc 45. However, when the gas pressure on the main valve 9 side becomes too high, the diaphragm 42 is pushed up by the gas, the valve 47 is raised, the gas outlet 44 is throttled, and the gas flow rate is reduced. If the gas pressure is not low, the diaphragm 42 is pushed down by the spring 53,
The gas outlet 44 is opened to increase the gas flow rate, thereby suppressing fluctuations in gas pressure and delivering a substantially constant amount of gas. Note that the gas flow rate can be adjusted by moving the adjustment screw 51 or the cylindrical portion 48 up and down to change the force of the spring 53. As shown in Fig. 10, the upper and lower burner connection ports 15,
16 are provided with on-off valves 17 and 18, respectively. The on-off valves 17 and 18 have a valve rod 19 inserted therethrough, and the lower end of the valve rod 19 is formed into a hemispherical shape. However, both open/close valve 1
The valve rods 19 of 7 and 18 are fitted with O-rings 20 and inserted into the through holes 21 of the gas distributor 11, with their lower ends protruding from the lower surface of the gas distributor 11.
The on-off valve 1 is biased downward by a spring 22.
When 7 and 18 are lowered, the upper and lower burner connection ports 15,
16 is closed and opened when it rises. Furthermore, there is a bypass passage 2 beside the on-off valve 18 on the lower burner 4 side through which a small amount of gas can pass.
3 is formed. The cam mechanism for opening and closing the upper burner connection port 15 and the lower burner connection port 16 is shown in FIGS. 9 and 10.
As shown in FIG. As shown in FIG. 9, a first base plate 24 is provided on the bottom surface of the gas distributor 11.
is attached with a screw 25, and a substantially semicircular cam 27 is rotatably connected to a pivot shaft 26 protruding from the lower surface of the first base plate 24.
The cam pin 29 of the protrusion 28 protrudes from the outer peripheral end of the
A spring 31 is stretched between the spring locking piece 30 of the first base plate 24 and the spring locking piece 30 of the first base plate 24. The edge of the upper surface of the cam 27 faces the lower end of the valve rod 19 as shown in FIG. A protrusion 32 and a recessed part 33 for lowering the on-off valves 17 and 18 are provided.
A pre-acting protrusion 35 that protrudes slightly more than the protrusion 32 is provided at the boundary between the recessed part 33 and the opening/closing valve 1.
Immediately before lowering the opening/closing valves 17, 18, the opening/closing valves 17, 18 are slightly pushed up by the pre-motion protrusion 35. The cam 27 is held down by a cam presser 34 integrally formed with the first base plate 24 to prevent it from floating up. Next, a link mechanism for operating the cam 27 is shown in FIG. The pipe 14 is fixed to the lower surface of the main valve 9, and a second base plate 36 is fixed to the lower surface of the pipe 14 by welding. A support shaft 37 erected on the lower surface of the second base plate 36 has a central portion of a substantially dogleg-shaped fire power switching lever 38 rotatably pivoted, and one end of a dogleg-shaped arm 39 is pivoted. It is pin-coupled to the rear end of the thermal power switching lever 38 via a link pin 40,
The other end of the arm 39 is connected to a cam pin 29 erected on the protrusion 28 of the cam 27. Furthermore, an engagement pin 54 is provided on the upper surface of the front end of the thermal power switching lever 38.
has been erected. Therefore, in the state before ignition, the heating power switching lever 38 is set to the left side (above in FIG. 9), and at this time the cam 27 is set to the left side (above in FIG. 10 and FIG. 12). In the state shown in part (a) of b, both on-off valves 17 and 18 are pushed up by the protrusion 32 of the cam 27 and are set in a fully open (large flame) state (the above-mentioned flame state). From this initial state, the heating power switching lever 38 is on the right side (the direction H in Figure 9).
When the cam 27 is moved to the center and set at the center, the cam 27 rotates in the direction shown in FIG. Gas flows only in the closed bypass passage 23 and forms a small flame, and the on-off valve 17 on the upper burner 3 side is closed to the protrusion 3.
2, it remains pushed up and opens into a large flame (the flame state described above). At this time, the opening/closing valve 18 on the lower burner 4 side is pushed up slightly by the pre-action protrusion 35 as shown in FIG. The lubricant flows between the O-ring 20 and the valve rod 19, breaking the adhesion between the O-ring 20 and the valve rod 19, and ensuring that the O-ring 20 and the valve rod 19 are lowered into the recessed notch 33. Furthermore, when the thermal power switching lever 38 is moved fully to the right, the opening/closing valve 18 of the lower burner 4 is pushed up by the protrusion 32 of the cam 27 and opened, as shown in FIGS. 12a and 12b. There was a huge flame, and the on-off valve 18 on the upper burner 3 side was closed to the cam 2.
7 and closes, the upper burner 3 is extinguished (the flame state described above). At this time, just before the on-off valve 17 on the upper burner 3 side fits into the recessed part 33, the valve rod 31 is removed as shown in FIG.
is pushed up slightly by the pre-motion protrusion 35 and reliably lowered into the recessed notch 33. Next, the ignition mechanism will be explained. On the front surface of the main valve 9, a third base plate 55 with the main operating shaft 12 passed through a large hole 63 is fixed with screws 56, and on the side of the third base plate 55 there is a micrometer for ignition. A switch 57 is attached. The main operating shaft 12 is inserted into an oval-shaped hole 67 of the ignition cam 58 and is prevented from coming out by a C ring 59.The ignition cam 58 is fixed to rotate together with the main operating shaft 12, and is A projecting strip 61 for turning on the operating lever 62 of the micro switch 57 is provided on the circumference of the back surface of the cam 58 . When not in use, the protrusion 61 is disengaged from the operating lever 62 of the micro switch 57, and the micro switch 57 is turned off. However, when the main operating shaft 12 is pushed around, the operating lever 62 is disengaged from the protrusion 61. When pressed, the micro switch 57 is turned on, allowing a discharge device (not shown) provided in the grill 2 to ignite and ignite the gas. Furthermore, when the main operating shaft 12 is released and protrudes as before, the micro switch 57 is activated again.
is turned off. Next, when extinguishing the fire, the upper and lower burners 3 and 4 must be returned to the fully open (large flame) state to preset them in preparation for ignition. A mechanism for preventing the flame from returning to the flame state described above will be explained. As shown in FIG. 1, a stand 64 is attached to the third base plate 55 so as to cover the front of the ignition cam 58, and the edge of the circular hole 65 through which the main operating shaft 12 passes is attached to the third base plate 55. A holding plate 66 having an L-shaped cross section is cut and raised. A circular hole 69 is provided at the upper end of the adjusting lever 68, which is bent into an approximately L-shape, and the main operating shaft 12 is loosely inserted into the circular hole 69 so as to be freely rotatable. An opening 72 is provided in the lower horizontal piece 71 of the adjustment lever 68, and the engagement pin 54 of the thermal power switching lever 38 is inserted from below into this opening 72, and protrudes from the adjustment lever 68. Rotate the adjustment lever 68 left and right by manually operating the adjustment operation knob 74 at the tip of the adjustment shaft 73,
By rotating the thermal power switching lever 38, the gas distributor 11 can be switched.
The back surface of the adjustment lever 68 is brought into sliding contact with the base 64, and the upper peripheral edge is fitted into the presser plate 66 to prevent it from floating up. The bending piece 70 is located behind the lower edge 60 of the third base plate 55 to prevent rattling of the adjustment lever 68 and to allow the adjustment lever 68 to rotate smoothly. An adjustment shaft 73 is provided protruding from the front of the adjustment lever 68, and an adjustment operation knob 74 is attached to the tip of the adjustment shaft 73 that projects from the front of the gas stove A. A swing lever 75 is inserted into the main operating shaft 12 on the front side of the adjustment lever 68 . The swing lever 75 has a pair of protrusions 77 on the inner periphery of the through hole 76.
When the main operating shaft 12, which has an oval cross section, is inserted into the through hole 76, the protrusion 77 comes into contact with the cutout plane 78 on the side surface of the main operating shaft 12, and the swing lever 75 moves to the main operating shaft 12. The main operating shaft 12 can be rotated only within a certain angular range (that is, within the cutout range of the main operating shaft 12). Moreover, the swinging lever 75 has a spring 79 inserted between it and the main operating knob 13 attached to the tip of the main operating shaft 12.
Further, the swing lever 75 is stopped at a position where it hits a protrusion 80 cut and raised on the adjustment lever 68 and becomes substantially parallel to the adjustment lever 68. Also, the third
A support piece 84 extends vertically from the side edge of the base plate 55, and a square pivot hole 8 is provided in the support piece 84.
5 is drilled, and a female screw hole 86 is provided below the pivot hole 85.
is provided. The lock key 82 has a pivot piece 88 projecting at a right angle from its upper end, a key piece 87 projecting at a right angle from its lower end, and an elongated guide hole 89 formed approximately in the center. Then, the pivot piece 88 of the lock key 82 is inserted and locked into the pivot hole 85 of the support piece 84, the key piece 87 is positioned below the support piece 84, and the cylindrical guide tube is inserted into the guide hole 89. 90 is loosely inserted into the guide tube 90, and the screw 91 is screwed into the female threaded hole 86.
A spring 92 inserted through the outer periphery of the screw 91 is stretched between the head of the screw 91 and the lock key 82 to press the lock key 82 against the support piece 84 and press the key piece 87.
is urged to protrude from the lower edge of the support piece 84, and the lock key 82 can be rotated about the pivot piece 88. On the other hand, a key groove 81 that can be engaged with the key piece 87 of the lock key 82 and a stop groove 93 are cut into the upper part of the adjustment lever 68 in a substantially V shape, and the key piece 87 is cut into the edge of the ignition cam 58. a release portion 83 for releasing the engagement between the key groove 81 and the keyway 81;
is installed protrudingly. Therefore, when not in use, the adjustment lever 68 is located at the left end as shown in FIG. It's stopped like that. The heating power switching lever 38 that is engaged with the adjustment lever 68 is also in the left position, and the upper burner connection port 15
The lower burner connection port 16 is kept fully open, but since the main operating shaft 12 is turned clockwise and set to the "off" position and the main valve 9 is closed, the flame is extinguished (as described above). ).
Also, at this time, since the swing lever 75 is in contact with the protrusion 80 of the adjustment lever 68, the adjustment lever 68 is locked so that it cannot move to the right. From this point, when the main operating shaft 12 is pushed all the way in the direction shown in FIG. 58 rotates, the main valve 9 is fully opened, and the ignition cam 58 pushes the micro switch 57 to ignite the upper and lower burners 3 and 4, causing the upper and lower burners 3 and 4 to burn in a large flame state (state described above). As a result, the singing lever 75
is rotated, the lock of the adjustment lever 68 is released, and the adjustment lever 68 can be operated. Therefore,
When the adjustment knob 74 is grasped by hand and the adjustment lever 68 is set to the center as shown in FIG. ).
The state shown in FIG. 3 and the state shown in FIG. 4 can be freely switched by operating the adjustment lever 68. Furthermore,
It is also possible to move the adjustment lever 68 to the right end as shown in FIG. 5 after passing through the state shown in FIG.
The second key piece 87 fits into the key groove 81 of the adjustment lever 68, making it impossible to return the adjustment lever 68 to the left again. This is because in the state shown in Fig. 5, the upper burner 3 is in the extinguished state and the lower burner 4 is burning with a large flame (the above state), so the upper burner connection port 15
This locks the door to prevent it from opening and causing a gas leak or small explosion. After the state shown in FIG. 5 is set, the main operating shaft 12 is returned to extinguish the flames of the upper and lower burners 3 and 4. That is, when the main operating shaft 12 is rotated in the direction N in FIG. 6, the ignition cam 58 and the swing lever 75 also return, and the swing lever 75 comes into contact with the protrusion 80 of the adjustment lever 68 as shown in FIG. When the ignition cam 58 comes into contact with the release part 83, the release part 83 comes out from under the keyway 81 and releases the spring 92.
Push back the key piece 87 against the
from the keyway 81. Furthermore, the main operating shaft 12
When it is returned, the adjustment lever 68 remains unlocked, and the rocking lever 75 pushes the protrusion 80 to return the adjustment lever 68 to its original state. At the same time as the main valve 9 is closed, the gas distributor 11 moves the upper and lower burners 3,
All four engines are returned to their initial state of full throttle.

[Effect of the idea]

The present invention is constructed as described above, and includes an upper burner and a lower burner disposed above and below within the grill, a gas distributor for distributing and supplying gas to the upper and lower burners, and a main valve that is operated to open and close. In the flame adjustment mechanism of a gas grill, the adjustment lever is equipped with a main operating shaft for adjusting the amount of gas distributed, and a keyway is provided in the adjustment lever to adjust the amount of gas distributed by operating the gas distributor. A lock key is provided that fits into the keyway and locks the adjustment lever from moving when the burner or lower burner is set to the extinguished state, so after either the upper or lower burner has been extinguished, that burner can be turned on again. It has the effect of being safe to use as there is no risk of it being opened, causing gas leaks or small explosions during use, and when operating the main operating shaft to close the main valve, the above-mentioned lock key A release part for pushing back and removing the lock key from the keyway is attached to the main operating shaft, so when you turn the main operating shaft and close the main valve, you can operate the adjustment lever, saving you the trouble of releasing the lock. This has the effect that excellent functionality can be obtained without any cost.
Furthermore, a mechanism to prevent reverse operation of the adjustment lever, such as a lock key or keyway, is provided between the main operating shaft and the adjustment lever, and the flame of the upper and lower burners can be adjusted by operating the adjustment knob at the tip of the adjustment shaft protruding from the adjustment lever. Since it is adjustable, the above reverse operation prevention mechanism can be incorporated inside the gas stove.
Unlike the conventional bag-shaped cover part, the reverse operation prevention mechanism does not protrude from the surface of the gas stove and get in the way, and the gas stove has the advantage of providing a clean-looking gas stove. .

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Figure 2 is a partially cutaway front view of the upper and lower burners as shown above when they are in a flame-out state, Figure 3 is a front view of the upper and lower burners as shown above when they are in a large flame state, and Figure 4 is a front view of the upper and lower burners as shown above when they are in a large flame state. Figure 5 is a front view when the upper burner is in a large flame state and the lower burner is in a small flame state. Figure 5 is a front view when the upper burner is in a flame extinguishing state and the lower burner is in a large flame state. An operation explanatory diagram showing the state when the lock key is removed from the key groove by the release part, FIG. 7a is a rear view of the ignition cam as above,
FIG. 7b is a view taken along the X arrow in FIG. 7a, FIG. 8 is a sectional view of the governor, FIG. 9 is a bottom view showing the mechanism for operating the cam for switching the gas distributor,
Fig. 0 is a sectional view of the gas distributor, Fig. 11 is a top view of the same cam, Fig. 12 a and b are explanatory diagrams showing the action of the above cam, Fig. 13 is a front view of the gas table stove, Fig. 14 is a sectional view of the grill in the gas stove, and Fig. 15 is a perspective view of the conventional example, in which 2 is the grill, 3 is the upper burner, 4 is the lower burner,
9 is a main valve, 11 is a gas distributor, 12 is a main operating shaft, 68 is an adjustment lever, 81 is a keyway, 82
83 is a lock key, and 83 is a release part.

Claims (1)

[Scope of utility model registration request] An upper burner and a lower burner are arranged above and below in the grill, a gas distributor is installed to distribute and supply gas to the upper and lower burners, and a main operating shaft is installed to open and close the main valve. In a flame adjustment mechanism for a gas grill that is equipped with an adjustment lever that can be operated to adjust the amount of gas distributed, an adjustment shaft with an adjustment knob at the tip is provided protruding from the adjustment lever, and the adjustment lever is provided with a key groove. A lock key is provided to lock the adjustment lever from moving by fitting into the keyway when the upper burner or lower burner is set to the flame-out state by operating the adjustment lever, and the main valve can be opened by operating the main operating shaft. A flame adjustment mechanism for a gas grill comprising a release part attached to a main operating shaft for pushing back the lock key and removing the lock key from the key groove when closing.