JPH058911Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of application and overview of the invention) The present invention relates to a gas rice cooker, particularly a fire extinguishing system consisting of a combination of a valve device and a heat-sensitive device. By providing it at a separate location within the bottom frame, the overall height of the bottom frame can be set low.

(Prior art and its problems) A gas rice cooker equipped with an automatic fire extinguishing device consisting of a combination of a valve device and a heat-sensitive device has already been disclosed in Japanese Utility Model Application Publication No. 121311/1981; As shown in FIG. 2, the valve device 1 is attached to the underframe 10, and the heat-sensitive device 2 is provided so as to face the center of the rice cooker 20, and the valve device 1 is attached to the underframe 10.
are interlocked by a lever 31.

This lever 31 is provided so as to correspond to the valve shaft 11 of the valve device 1, and by operating a swinging lever 32 that interlocks with the lever 31, the valve shaft 11 is pushed in and the valve body in the valve device 1 is opened. It's starting to be talked about a lot.

Further, the heat-sensitive device 2 includes a cylinder body 22 having a top wall 21 facing the center of the bottom of the rice cooker 20, a soft ferrite 23 attached to the top wall 21,
Opposing this soft ferrite 23, a cylinder 22
It consists of a permanent magnet 24 that is provided in the interior so that it can be raised and lowered, and a connecting shaft 25 that is connected to the permanent magnet 24 and connected to the tip of the lever 31. When the swinging lever 32 is pushed down, the lever 31 → the connecting shaft 25 → This permanent magnet 24 is brought into contact with the soft ferrite 23 due to the interlocking relationship of the permanent magnet 24.
4 is attracted to the soft ferrite 23, and the lever 3
The tip of 1 is maintained in a raised position.
At the same time, due to the displacement of the lever 31 in the vicinity of the fulcrum 33 and the relationship between the valve shaft 11 and the actuator 12 interposed therebetween, the valve shaft 11 is maintained in a pushed-in state, and the burner B in the valve device 1 is The circuit to is opened.

As a result, burner B burns and the rice cooker 20
is heated and cooking progresses. When the inside of the rice cooking pot 20 reaches the rice cooking completion temperature, the soft ferrite 23 will detect this, but since the magnetic permeability of the soft ferrite 23 decreases sharply in the temperature range above the set temperature, Therefore, the permanent magnet 24 is separated from the soft ferrite 23 and lowered. As a result, the valve stem 11
The force to push the valve (valve opening holding force) disappears and this valve stem 1
A valve body (not shown) corresponding to 1 automatically returns to cut off the gas circuit and automatically extinguishes the fire.

However, in this conventional type, the height of the lower frame A that houses the burner B and the valve device 1 is increased,
There was a problem that the overall height of the rice cooker could not be set low.

This is because the fulcrum portions of the lever 31 and the swing lever 32 are located outside the valve device 1, and the valve shaft 11 protrudes toward the outside of the lower frame A.

That is, since the pushing stroke of the valve stem 11 needs to be set at a certain level or more, in order to satisfy this condition, the movement range at the tip of the lever 31, which has the fulcrum part 33 near the peripheral wall of the lower frame A, must be set to a certain value or more. becomes larger. The movement space of this lever 31 below the burner B occupies a large proportion of the height of the lower frame A, and the height of the lower frame A becomes higher than necessary.

(Technical Problem) The present invention has a heat-sensitive device consisting of such a soft ferrite 23 and a permanent magnet 24 facing the soft ferrite 23 and provided so as to be able to move up and down, and a lever 31 interlocked with the heat-sensitive device to operate a valve. In the device 1 in which the valve body of the device 1 is opened and closed and this lever is linked with the swinging lever 32, the valve device a lever 3 that is interlocked with the valve shaft 11 of the first valve body and interlocked with the permanent magnet 24;
The technical problem is to be able to set the length of 1 to be short.

(Technical means) The technical means of the present invention taken to solve the above technical problem are the swing lever 32 and the valve device 1.
and are arranged on almost opposite sides across the center of the lower frame A,
The valve shaft 11 of the valve device 1 is provided at the periphery of the lower frame A so as to protrude toward the center of the lower frame A, and the permanent magnet 2
4 and the lever 31 interlocked with the valve shaft 11.
By positioning the fulcrum portion 33 near the valve stem 11 and at the center of the lower frame A, and operating the swing lever 32,
The connection part of the tip of the lever 31 with the permanent magnet 24 is made to move up and down, and a space in the height direction corresponding to the amount of movement of the tip of the lever 31 is formed between the burner B and the bottom of the lower frame A. This is what I did.

(Operation) The above technical means of the present invention operates as follows.

When the swinging lever 32 is pushed down, the tip of the lever 31 is lifted in the same interlocking relationship as in the conventional example described above, and the permanent magnet 24 is attached to the soft ferrite 23.
is absorbed and held in this state.

At the same time, the valve body in the valve device 1 is opened by the interlocking action of the lever 31 and the valve shaft 11. vice versa,
When the permanent magnet 24 is separated from the soft ferrite 23, the lever 31 returns to its initial position, the pushing force of the valve shaft 11 of the valve device 1 is released, the valve body is closed, and the fire is automatically extinguished.

However, in the above-mentioned technical means, the fulcrum part 33 of the lever 31 is located between the valve device 1 and the center of the lower frame A. The range of movement of the tip of the lever 31 is reduced compared to the above.

(Effects) Since the present invention has the above configuration, it has the following unique effects.

Since the range of movement of the tip of the lever 31 in the vertical direction is reduced, the vertical space for the operation of the lever 31 below the burner B is reduced accordingly, and the height of the lower frame A can be reduced accordingly. .

Therefore, the overall height of the appliance is reduced, and the gas rice cooker can be made more compact.

(Example) Hereinafter, an example of the present invention will be described based on FIG. 1.

In this embodiment, a swing lever 32 is provided on the opposite side of the valve device 1, and an operating portion of the swing lever 32 protrudes from an opening a formed in the body of the lower frame A. The valve device 1 is attached to the bottom of the lower frame A, and its gas outlet side is communicated with the burner B through a conduit and a nozzle N provided at its tip (downstream end), and the circuit to the burner B is opened and closed. A valve shaft 11 of a valve body (not shown) protrudes toward the center of the lower frame A. The lever 31 consists of a horizontal portion 34 and an upright portion 35 that bends upward from the horizontal portion 34, and is pivoted near the bending point to form a fulcrum portion 33.
It is becoming. Therefore, when the tip (end on the center side) of the horizontal portion 34 is lifted, the upright portion 3
The upper end of the valve 5 falls outward, and the valve stem 11 is pushed in a certain stroke to open the valve body in the valve device 1.
The tip of the horizontal portion 34 of this lever 31 is connected to a connecting shaft 25 connected to a permanent magnet 24, and when the permanent magnet 24 is attracted to the soft ferrite 23 attached to the top wall 21 of the cylinder body 22, the valve device The valve body in 1 is held in an open state.

Next, the burner B is mounted and fixed on the upper surface of the underframe 10, and one end of this underframe 10 is positioned near the body of the lower frame A to form the pivot support 13 of the swing lever 32, One end of the swing lever 32, which is swingably supported by the shaft support 13, protrudes outside from the opening a and becomes an operating section, and the other end is connected to the horizontal portion 3.
They overlap below the tip of 4.

Therefore, when the operating portion of the swinging lever 32 is pushed down, the inner end of the swinging lever 32 is lifted, so that the tip of the horizontal portion 34 touches the permanent magnet 2.
4. If the operating force of the swing lever 32 is released while the permanent magnet 24 is lifted together with the connecting shaft 25 and is attracted to the soft ferrite 23, only the swing lever 32 can return to its initial state.

It goes without saying that an ignition device or the like that interlocks with the swing lever 32 is provided, and when igniting with an electric device, a configuration in which an indicator lamp lights up at the time of ignition can be adopted, and the swing lever 32 Therefore, even if the swing lever 32 returns to the initial position after the rice cooking state is set, the set state can be confirmed by the lighting of the indicator lamp. When the swinging lever 32 and the horizontal portion 34 are connected, the operation part of the swinging lever 32 remains depressed in the rice cooking set state, so that the rice cooking set state can be determined from this, and the above-mentioned Indicator lamps etc. are not required.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the main parts of the embodiment of the present invention, and Fig. 2 is an explanatory diagram of the conventional example. ...Permanent magnet, 31... Lever, 32... Rocking lever, 33... Fulcrum part, A
...Bottom frame, B...burner.

Claims (1)

[Scope of utility model registration request] The valve body of the valve device 1 is opened and closed by a thermal device consisting of a soft ferrite 23 and a permanent magnet 24 facing the soft ferrite 23 and provided movably up and down, and a lever 31 interlocked with this thermal device. In the gas rice cooker in which the swing lever 32 and the valve device 1 are arranged to be interlocked with the swing lever 32, the swing lever 32 and the valve device 1 are disposed on substantially opposite sides with the center of the lower frame A interposed therebetween, and the valve shaft 11 of the valve device 1 is The lever 31 is provided at the periphery of the lower frame A so as to protrude toward the center of the lower frame A, and the fulcrum portion 33 of the lever 31 that interlocks with the permanent magnet 24 and the valve shaft 11 is located near the valve shaft 11 and on the lower frame. A
By swinging the swinging lever 32, the connection part with the permanent magnet 24 at the tip of the lever 31 is raised and lowered.
A gas rice cooker in which a space in the height direction corresponding to the amount of movement of the tip of the burner is formed between the burner B and the bottom of the lower frame A.