JPH0510758Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application] The present invention relates to a rice-cooking stove, in particular, a type of stove in which the combustion capacity of the gas burner can be set to a combustion capacity suitable for rice cooking, and its operation. It improves sex.

[Prior Art and its Problems] A conventional rice cooking stove will be described below. Here, parts corresponding to the embodiments of the present invention will be described using the same reference numerals.

A conventional gas rice cooker consists of an upper device 1 that removably accommodates a rice cooker 10 equipped with a heat-responsive device S such as a bimetal, and a lower device 2 on which the upper device 1 is removably placed. The lower device 2 is equipped with a gas burner B as a combustion section, a valve device 3 interlocked with the thermal response device S, an automatic fire extinguishing mechanism 4, and an operating device 5. Then, on the top surface of this lower device 2, Gotoku G
It is equipped with. The thermal response device S is a rice cooker 1
When the inside of the valve reaches the set temperature, the operating section operates with a constant stroke, and this operating force is transmitted to the valve device 3 via the automatic fire extinguishing mechanism 4, and the valve device 3 is operated.

Therefore, when the gas burner B is burned with the upper device 1 placed on the upper surface of the lower device 2, when the rice cooking is completed due to the action of the thermal response device S, the valve device is activated in conjunction with the automatic extinguishing mechanism 4. 3 closes the valve and gas burner B is automatically extinguished. When using the stove as a normal stove, a cooking pot or the like is placed on the Gotoku G and the gas burner B is ignited by operating the operating device 5.

In this conventional type, even without employing a special control device as disclosed in Japanese Patent Publication No. 63-29529, the inconvenience that the gas burner B is unnecessarily extinguished when the stove is used does not occur.

Since the heat-responsive device S is installed in the rice cooker 10, when cooking using a cooking pot such as a frying pan, the valve device 3 will not operate even if the temperature at the bottom of the cooking pot becomes high. This is because gas burner B does not automatically extinguish.

However, with this conventional type, gas burner B
The amount of gas burned is set to the amount of gas suitable for cooking rice, so if the gas power is insufficient when using the stove, and the cooking requires a large amount of heat, such as when cooking roasted foods, the finish of the food may be insufficient. becomes.

The present invention is such that the upper device 1 that houses the rice cooker 10 equipped with the heat-responsive device S is removably placed on the upper surface of the lower device 2, and the
The lower device 2 accommodates a valve device 3 and a gas burner B that are interlocked with the thermal response device S via an automatic fire extinguishing mechanism 4, and an operating section of an operating device 5 provided in the lower device 2 accommodates Therefore, the valve device 3
This rice-cooking stove can be operated with the valve open, making it possible to perform various types of cooking even with a heat power higher than that suitable for cooking rice, and making it easier to operate the rice cooker. The technical challenge is to enable each operation to be performed using

[Technical Means] The technical means of the present invention taken to solve the above technical problem is as follows: ``The nozzle N facing the gas burner B is connected to the outlet part of the valve device 3, and the gas burner is installed in the valve device 3. The first gas amount setting means 3a sets the amount of gas supplied to B to the maximum value, the third gas amount setting means 3c sets it to the minimum value, and the second gas amount setting means 3b sets it to an intermediate value thereof. , the gas amount value set by the second gas amount setting means 3b and the diameter of the gas passage hole of the nozzle N is set to a gas amount suitable for rice cooking, and each of the gas amount setting means is set to a gas amount suitable for rice cooking. A predetermined gas amount is set by opening the corresponding lift valve V, and the operating device 5 operates in front of the valve stem of each lift valve V in conjunction with the valve stem. A lever mechanism consisting of a first cam plate 61 supported movably in the axial direction and urged in a direction away from the valve shaft, and a lever for pushing the first cam plate 61 is arranged in parallel. , the cam plate 61,
61, and these cam plates 6
A sliding plate 57 having elongated holes 60 and 60 passing through the holes 1 and 61 respectively is provided, and this sliding plate 5
7 is biased so that one end of each of the long holes 60 is in contact with one side of each of the cam plates 61 in the same direction, and a portion of each cam plate 61 that contacts the end of the long hole 60 has a A first crest 64 that is one-way engaged with the sliding plate 57 in a return movement inhibiting state and a second ridge 65 located in front of the first ridge 64 are provided, and the second ridge 65 is closer to the first ridge 64. The inlet side of the gas circuit to the valve device 3 is provided with a valve body biased in the valve closing direction, and the valve body in the valve open position is opened when energized. A solenoid valve 30 is provided to maintain the valve position, and when the sliding plate 57 comes into contact with the second peak 65, the valve shaft of the valve body of the solenoid valve 30 is pushed into the open position and the first peak 64 A lever device that separates from the valve stem when engaged is interlocked with the sliding plate 57, and a normally closed switch 43 is inserted into the electric circuit of the solenoid valve 30, which is interlocked with a thermal response device that operates when rice cooking is completed. A fire extinguishing lever mechanism for releasing the engagement between the elongated hole 60 of the sliding plate 57 and the first peak 64 is provided separately from each of the lever mechanisms described above.

[Operation] The above technical means of the present invention operates as follows.

When cooking rice, the upper device 1 is placed on the lower device 2, and the required amount of rice and water are put into the rice cooker 10 in the upper device 1, which corresponds to the second gas amount setting means 3b of the automatic extinguishing mechanism 4. Press the operating part of the lever mechanism. As a result, the cam plate 61 pushes the valve shaft of the corresponding lift valve V of the valve device 3 to open the valve.
On the other hand, when the cam plate 61 is pushed in the most, the long hole 60 of the sliding plate 57 and the second peak 65 come into contact with each other, so that the cam plate 61 is moved the most from the initial position and the solenoid valve is set in the open state. Ru.

During this time, when the ignition is ignited and the push-down force on the operating part of the lever mechanism is released, the edge of the elongated hole 60 of the sliding plate 57 engages with the first peak 64, and the lift valve V is opened. maintained. Therefore, the amount of gas supplied from the nozzle N to the gas burner B via this valve device is suitable for rice cooking, and the rice cooker 10 is heated with just the right amount of heat.

On the other hand, when the cam plate 61 is pushed in the most, the elongated hole 60 of the sliding plate 57 and the second peak 65 come into contact with each other, so that the cam plate 61 is moved the most from the initial position and the solenoid valve is set in the open state. Ru.

When the inside of the rice cooker 10 reaches the rice cooking completion state, the thermal response device S detects the temperature at the bottom of the rice cooker 10 at this time, opens the switch 43, and closes the solenoid valve 30.
automatically closes to cut off the gas circuit to the valve device 3. In other words, the fire will be extinguished automatically.

Next, when using it as a stove, operate the operating part of a specific lever mechanism suitable for cooking. Then, the solenoid valve 30 is maintained in the open state by means similar to the above, and the lift valve V corresponding to the lever mechanism is maintained in the open state, and the corresponding gas amount setting means is put into the operating state. The thermal power of the gas burner B is set to one of three levels from the maximum thermal power to the minimum thermal power.

At this time, cooking will proceed with the frying pan or cooking pot placed on the Gotoku G, but since these cooking utensils are not equipped with a thermal response device S, the cooking time may vary depending on the type of cooking. Even if the temperature at the bottom becomes high during cooking, the fire will not be accidentally extinguished.

To extinguish the fire midway through use, press down on the operating part of the separately provided extinguishing lever.
This causes the sliding plate 57 to move to the first position of the first cam plate 61.
Since the engagement between the crest 64 and the edge of the elongated hole 60 is released, the first cam plate 61 that was in the pushed-in state returns to its original state, and the corresponding lift valve V closes to extinguish the fire.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

When cooking rice, simply pushing down the operating part of the lever mechanism corresponding to the second gas amount setting means 3b makes it easy to operate the water.

When using the stove, it can be set to a higher heat than when cooking rice, making it possible to cook roasted foods. In addition, when using this stove, the desired firepower can be set by simply pushing down the operating part of a specific lever mechanism, and in this state of use, there will be no inconvenience that the valve device 3 will inadvertently close and the gas burner B will go out. .

Each operation is performed by simply pushing the operating section of the corresponding lever mechanism, improving overall operability.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 8.

As shown in FIG. 1, the upper device 1 of this embodiment has a plurality of partial protrusions 12, 12 formed on the inner periphery of the upper end of a cylindrical case 11. Rice cooker 1 housed in case 11
The rice cooker 10 has a cylindrical case 11 on its outer periphery.
A certain distance 〓 is now formed between the two. This space is a space for combustion exhaust.
An inner lid 14 is placed on the flange 13 of the rice cooker 10, and the entire open upper end of the rice cooker 10 is closed by an outer lid 15. The outer cover 15 of this embodiment is of a single-opening type, and its fulcrum is disposed at the upper end of the cylindrical case 11, and a locking device is disposed on the opposite side of the fulcrum. The supporting part and locking device for the outer cover 15 have a known structure and are omitted from the drawings.

The thermal response device S attached to the bottom of the rice cooker 10 is a hollow body equipped with a diaphragm D, and a liquid having a predetermined vaporization temperature is sealed in the hollow part. This device is of a type in which the diaphragm D reverses from the state shown in FIG. 1 to a downwardly convex state when the temperature inside the rice cooker 10 reaches a set temperature.

Next, a lower device 2 on which the upper device 1 is placed
As shown in Fig. 2, the planar shape is approximately rectangular, and the top surface has a shallow recess 2 as shown in Fig. 1.
1 is formed, and the Gotoku G is fitted into this recessed portion 21. This Gotoku G has a plurality of inverted L-shaped claw plates 22, 22 protruding from an annular plate. is set. Furthermore, a notch 23 is formed on the upper side of the claw plate 22 at a position that coincides with the legs L of the bottom of the rice cooker 10, and the depth of this notch 23 is such that the rice cooker 10 is not inserted into the cylindrical case 11. The size is set such that the leg portion L can be loosely fitted in the housed and placed state.

Next, the internal structure of the lower device 2 is as shown in FIG. It is exposed upward from the opening 24.

A central hole 50 that penetrates vertically is formed in the center of the gas burner B, and accommodates an elevating shaft 41 of the automatic fire extinguishing mechanism 4 installed in the lower device 2 and a support tube 42 that supports the elevating shaft 41 so as to be able to move up and down. has been done. This support tube 42 is attached together with the gas burner B to the upper surface of the underframe D on which the main parts of the operating device 5 are mounted.

The frame D is disposed from the lower region of the gas burner B to the vicinity of the front edge of the lower device 2, and a valve device 3 is attached to the front end of the frame D. The valve device 3 is constructed as shown in Fig. 2, and is provided with a thermocouple-type solenoid valve 30 as a safety device on the upstream side of the gas inlet 31, and a nozzle N on the opposite side.
The gas inlet 31 is attached to the
Three valve chambers 32, 32 are connected in series downstream of the valve chamber 32, and an outlet side flow path 33 is connected to each of the valve chambers 32 in parallel with the circuit connecting the valve chambers 32, 32.
It is formed in a manner that communicates with the

A lift valve V is specially provided in the communication portion of these two flow paths, and a small orifice 34 is provided downstream of the lift valve V located on the most upstream side in the outlet side flow path 33, and a lift valve V located in the middle is provided. A large orifice 35 is inserted on the downstream side of the valve V, and a nozzle N is connected to the downstream end of the outlet flow path 33, and this nozzle N faces the primary air suction hole of the gas burner B. Here, the diameter of the discharge port of nozzle N is
The gas amount is set to correspond to the maximum gas amount, and the gas amount set by the combination of the diameter of the small orifice 34 and the nozzle N becomes the minimum gas amount value, and the gas amount is set by the combination of the large orifice 35 and the nozzle N. The gas amount is the intermediate value between the two gas amounts. In other words, the nozzle N and the lift valve V immediately before it
The combination with this becomes the first gas amount setting means 3a, the large orifice 35 and the lift valve V immediately before it become the second gas amount setting means 3b, and the small orifice 34 and the lift valve V immediately before it become the third gas amount setting means. This becomes a setting means 3c.

The valve shaft of each of the lift valves V projects forward from the valve body of the valve device 3 and faces the output portion of the operating device 5. This operating device 5 includes a first lever 53 serving as an input part for the first gas amount setting means 3a, a second lever 54 serving as an input part for the second gas amount setting means 3b,
A third lever 55 serving as an input part of the third gas amount setting means 3c, and a first lever that moves forward and backward in conjunction with these levers.
cam plates 61, 61, a sliding plate 57 interlocking with the first cam plate 61, a fourth lever 56 interlocking with the sliding plate 57 and the second cam plate 62, and a sliding plate 57 interlocking with the first cam plate 61; It consists of a fifth lever 58 connected to the tip, and the fifth lever 58 interlocks with the valve shaft of the electromagnetic valve 30 connected to the upstream end of the valve device 3.
The connection relationship between the fifth lever 58 and the tip of the sliding plate 57 is as shown in FIG. When inserted into the convex opening formed at the end, they are interlockably connected, and the two are positively interlocked.

Further, the first lever 53 to the fourth lever 56 are both pivotally supported by a bracket 7 provided at the front end of the lower device 2, and are arranged in parallel and rotatably. Furthermore, the cross-sectional shape of each lever is set similarly, and as shown in FIG.
An extension piece 59 extended from the first cam plate 61 or the second cam plate 62 functions as an actuator for the first cam plate 61 or the second cam plate 62. That is, when the operating portion 51 is pushed down by a certain stroke, the extension piece 59 swings forward in the horizontal direction and pushes the first cam plate 61 or the second cam plate 62 by a certain stroke.

The first cam plate 61, as shown in FIG.
Specifically, as shown in FIGS. 3 and 4, a cam portion 63 is formed on the front side of one side in the longitudinal direction, and both edges on the tip side of this cam portion are edges parallel to the direction of movement. The cam portion 63 is composed of a first peak portion 64 and a second peak portion 65, and a valley portion is formed between the two peak portions. Further, the tip portion facing the valve device 3 is provided with an upright piece 66 facing the valve shaft of the lift valve V. Then, the second mountain portion 6
5 is set larger than that of the other first peak 64.

As shown in FIG. 5, the other second cam plate 62 has only one ridge 67, and the amount of protrusion of this ridge is greater than that of the first ridge 64 of the first cam plate 61. It is set large.

Both the first cam plate 61 and the second cam plate 62 are held by a bracket 7 and a sliding plate 57 slidably mated to the bracket 7 so as to be slidable back and forth. For this reason, the bracket 7 is configured to include a pair of upright plates 71 and 72 at the front and rear.
Bearing portions 73, 73 protruding forward from both ends of 2
A shaft that supports the first lever 53 to the fourth lever 56 is installed between them. And upright plates 71, 72
A horizontally long elongated hole through which the first cam plate 61 is inserted is formed in each of the upright plates 71, and the elongated hole 74 of the upright plate 71 matches the spacing between the parallel parts on the tip sides of the first cam plate 61 and the second cam plate 62. The length of the elongated hole 75 of the upright plate 72 is made to match the width of the second ridge portion 65 forming portion of the first cam plate 61 or the width of the ridge portion 67 forming portion of the second cam plate 62. Further, each of the first cam plate 61 and the second cam plate 62 is provided with a hook-shaped protrusion 68, as shown in FIG. A spring 69 is interposed to bias the cam plate in the return direction.

The fifth lever 58 is pivotally supported by a pin P installed at the bottom of the bracket 7, and swings in the horizontal direction. Further, the fifth lever 58 is attached to the sliding plate 57.
It is always urged in the return direction by a spring 99 interposed between the extension on the opposite side of the bracket 7 and the end of the bracket 7.

Next, the automatic fire extinguishing mechanism 4 includes the above-mentioned lifting shaft 41,
It consists of a combination of a support tube 42 and a switch 43, and this switch 43 is arranged on the bottom plate of the lower device 2 so that its input part 44 faces the lower end of the lifting shaft 41, and electrically, as shown in FIG. The relationship is as shown below.

That is, in this embodiment, a heat sensitive part 45 is disposed near the flame hole of the gas burner B, and a known thermocouple safety device is provided in which a solenoid valve 30 is inserted into a future thermocouple circuit. , the switch 43 is inserted in series with the solenoid valve 30. Therefore, when the heat sensitive section 45 is heated to a constant temperature and the switch 43 is in the closed state, the electromotive force generated at this time maintains the solenoid valve 30 in the open state. When the solenoid valve 3 opens or the flame of gas burner B disappears,
0 closes. Here, the solenoid valve 30 has a valve body that is normally biased in the valve closing direction, and is of a type that maintains the valve body in the open state by the attraction force of the electromagnet. This type of valve automatically closes when the power is cut off, even temporarily.

In the embodiment detailed above, the first lever 5
When any one of the third to third levers 55 is operated, the corresponding first cam plate 61 advances, and the lift valve V facing the upright piece 66 is opened, and the small orifice 34 located downstream thereof is opened. Alternatively, the amount of gas set by the large orifice 35 and furthermore the nozzle N is supplied to the gas burner B.

At this time, when each operating lever is once lowered to the lowest position, the second peak 65 is connected to the long hole formed in the sliding plate 57, as shown in FIG.
The fifth lever 58 swings at a certain angle due to the cam mechanism action of the pair between them, and the iron piece F integrated with the valve body of the solenoid valve 30 is placed in a position where it can be attracted and held by the electromagnet. Pushed in.
At the same time, an ignition device (not shown) operates to ignite the gas burner B. When the operating state is maintained for a certain period of time, the solenoid valve 30 is maintained in the open state by the thermoelectromotive force generated in the thermocouple circuit. Therefore, the solenoid valve 30 is then closed via the fifth lever 58.
Even when the valve-opening force applied to the valve shaft is released, the valve-open state is maintained. Therefore, the first lever 53~
When the downward operating force of any of the third levers 55 is released, each operating lever and the first cam plate 61 return due to the return biasing force of the spring 99, and at the same time, the sliding plate 57 returns due to the biasing force of the extension piece 59. . However, since the first crest 64 is located on the downstream side of the first cam plate 61 in the return direction of the cam portion 63, when the first ridge 64 and one side of the 60 are engaged, this engagement is interrupted. Accordingly, the return movement of the sliding plate 57 and the first cam plate 61 is stopped. Here, the first
Since the amount of movement of the cam plate 61, the opening stroke of the lift valve V, and the swing angle of the fifth lever 58 are set to predetermined values, at the above-mentioned point in time, the output portion of the fifth lever 58 is connected to the solenoid valve 30. The valve body has returned to a position that allows the valve to close, and the upright piece 66 has pushed the valve stem of the lift valve V a certain distance. Therefore, the lift valve V corresponding to a specific operating lever among the first lever 53 to the third lever 55 is maintained in an open state. Further, the solenoid valve 30 is set in a state where it can be automatically closed.

To stop this combustion state by manual operation, the operating portion of the fourth lever 56 corresponding to the second cam plate 62 is pushed down. Then, this second cam plate 6
A second peak 67 is provided on the sliding plate 57, and the sliding plate 57 is cam-paired with one side of the corresponding elongated hole 60.
As shown in FIG. 5, the sliding plate 57 and the first cam plate 61 are disengaged after moving by a distance corresponding to the difference between the amount of protrusion of the sliding plate 57 and the trough of the first cam plate 61. 1 cam plate 61 and the corresponding operating lever return to their initial positions. As a result, the corresponding lift valve V is closed by the return spring 37 acting thereon. When the downward force of the fourth lever 56 is released, the second cam plate 62 returns to its initial position due to the biasing force of the spring 69, and at the same time, the sliding plate 57 also returns to its initial position due to the return biasing force of the extension piece 59. Return to position.

The above operation is the operation when using a stove,
When cooking rice, the upper device 1 is placed on the upper surface of the lower device 2, and the second lever 54 is pushed down to ignite the gas burner B. This depressed state is maintained for a certain period of time to generate a thermoelectromotive force of the heat sensitive part 45. Therefore, when the solenoid valve 30 is maintained in the open state, this second
When the pressing force of the lever 54 is released, the gas burner B enters the combustion state in the same manner as in the above case.
When the rice cooking is completed, the diaphragm D of the thermal response device S operates, and its descending force is applied to the lifting shaft 41.
, and press the input section of the switch 43. As a result, the electric circuit to the electromagnetic valve 30 is cut off, and the electromagnetic valve 30 automatically closes as described above. At this time, the lift valve V corresponding to the second lever 54 is maintained in an open state, but the gas supply to the nozzle N is cut off by closing the electromagnetic valve 30, and the gas burner B is automatically extinguished.

In this embodiment, the fire is automatically extinguished by cutting off the thermocouple circuit of the solenoid valve 30 with the switch 43, but a conventional known mechanical configuration may also be adopted as the automatic fire extinguishing mechanism 4. be.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a schematic plan view of the stove section, and Fig. 3 is a first cam plate 61.
4 is an explanatory diagram of the operation of the first cam plate, FIG. 5 is an explanatory diagram of the second cam plate 62,
FIG. 6 is a sectional view of the first and second cam plates installed, FIG. 7 is a relationship between the fifth lever 58 and the sliding plate 57, and FIG. 8 is an explanatory diagram of the fire extinguishing mechanism. ,
2...Lower device, S...Thermal response device, 10...Rice cooker, 1...Upper device, G...Gotoku, 4...Automatic fire extinguishing mechanism, 3...Valve device, B...Gas burner, 5 ... Operating device, N... Nozzle, 3a... First gas amount setting means, 3c... Third gas amount setting means, 3b... Second gas amount setting means.

Claims (1)

[Scope of utility model registration request] The upper device 1 housing the rice cooker 10 equipped with the thermally responsive device S is removably placed on the upper surface of the lower device 2, and the Gotoku G is placed on the upper surface of the lower device 2.
houses a valve device 3 and a gas burner B that are interlocked with the thermal response device S through an automatic fire extinguishing mechanism 4, and the valve device 3 is opened by an operating section of an operating device 5 provided in the lower device 2. In a rice cooking stove that can be operated according to the state, gas burner B
The nozzle N facing the gas burner B is connected to the outlet of the valve device 3, and the valve device 3 includes a first gas amount setting means 3a for setting the amount of gas supplied to the gas burner B to the maximum value, and a third gas amount setting means 3a for setting the amount of gas supplied to the gas burner B to the minimum value. Gas amount setting means 3c
and a second gas amount setting means 3b that sets the value to an intermediate value between these values, and sets the gas amount value set by the second gas amount setting means 3b and the diameter of the gas passage hole of the nozzle N for cooking rice. Each gas amount setting means is configured to be set to a predetermined gas amount by opening the corresponding lift valve V in the valve device, and the operating device 5
is a first valve that is supported in front of the valve shaft of each of the lift valves V so as to be movable in the axial direction of the valve shaft in conjunction with the valve shaft, and is biased in a direction away from the valve shaft.
A lever mechanism consisting of a cam plate 61 and a lever for pushing the first cam plate 61 is arranged side by side,
A sliding plate 57 is provided which slides in a manner perpendicular to the cam plates 61, 61 and has elongated holes 60, 60 which pass through the cam plates 61, 61 separately. One end of the elongated hole 60 is biased so as to come into contact with one side of each of the cam plates 61 in the same direction, and the sliding plate 57 is provided with a first ridge portion 64 that engages one-way in a return movement inhibiting state and a second ridge portion 65 located in front of the first ridge portion 64, and the second ridge portion 65 is provided.
The peak portion 65 is a peak portion that protrudes more than the first peak portion 64, and is provided with a valve body biased in the valve closing direction on the inlet side of the gas circuit to the valve device 3, and is in the valve open position. A solenoid valve 30 is provided to maintain the valve body in the open position when the valve body is energized, and the sliding plate 57 is in the second position.
When the valve body of the electromagnetic valve 30 comes into contact with the peak 65, the valve shaft of the valve body of the electromagnetic valve 30 is pushed into the valve opening position, and the first peak 64
A lever device that separates from the valve stem when engaged is interlocked with the sliding plate 57, and a normally closed switch 43 is inserted into the electrical circuit of the solenoid valve 30, which is interlocked with a thermal response device that operates when rice cooking is completed. , a rice-cooking stove in which a fire extinguishing lever mechanism for releasing the engagement between the elongated hole 60 of the sliding plate 57 and the first peak 64 is provided separately from each of the lever mechanisms described above.