JPS5811307Y2 - gas rice cooker - Google Patents

Description

[Detailed description of the invention] The present invention aims to improve the automatic fire extinguishing device for gas rice cookers, particularly by simplifying the valve structure and operation lever structure. After confirmation, the main burner can be ignited, and all of these operations can be performed using a single operating lever.

Additionally, a secondary feature is the ability to more quickly perform air purging in the rubber piping leading to the equipment.

The details of the present invention will be described below according to the illustrated embodiments.

In the figure, reference numeral 1 denotes the bottom of the rice cooker, with which the top surface 3 of a cylindrical body 2 disposed below abuts, and the soft ferrite 4 attached to the inner surface of the top surface functions as a heat-sensitive element.

A permanent magnet 6 that moves up and down along a guide shaft 5 disposed inside the cylinder corresponds to the soft ferrite 4, and the permanent magnet 6 is linked to an operating lever 9 via a lifting rod 7 and a lever 8. ing.

The lever 8 and the operating lever 9 are coaxially supported by a bracket 11 provided on the front surface of the valve body 10, and furthermore, the lever 8 and the operating lever 9 are configured to rotate together only within an appropriate range of rotation of the operating lever 9.

That is, the connecting portion between the lever 8 and the operating lever 9 is bent as shown in FIG.
The rotation of the operation lever 9 until the bent portion 15 or the base end 16 of the bent tongue piece 12 comes into contact with the lever 8 is made independent of the rotation of the lever 8. be.

Next, the valve body 10 has a gas port 17 to a valve chamber 18.
One side reaches the main burner 19 and the other side reaches the pilot burner 20.
A gas flow path is formed that reaches the valve chamber, and a valve seat 21 is formed on the inlet side of the valve chamber, and a valve seat 22 is formed on the gas outlet side to the main burner 19 so that the two valve seats face each other. 14
A valve body 23 provided at the base is located between both valve seats 21 and 22 and is normally urged by a spring 24 to abut against the valve seat 21.

In the gas rice cooker having the structure described in detail above, when the operating lever 9 is pushed down, the bent tongue piece 12 resists the spring 24 and moves against the valve shaft 1.
Push in 7.

As a result, the valve body 23 comes into contact with the valve seat 22 after opening both the gas circuit to the main burner 19 and the gas flow path to the pilot burner 20 .

Therefore, if an ignition means such as a piezoelectric device is operated to ignite the pilot burner 20 during this time, only the pilot burner 20 continues to burn.

In the above operation, after the base 16 of the bent tongue piece 12 of the operating lever 9 and the lever 8 come into contact, they rotate together, and the elevating rod 7 connected to the tip of the lever 8 lifts the permanent magnet 6. Then, the permanent magnet is attracted to the soft ferrite 4.

Next, when the push-down blade of the operating lever 9 is released, the operating lever returns to the state where the bent portion 15 of the bent tongue piece 12 is in contact with the lever 8 (state A), and the valve body 23 is moved into the valve chamber. 18
Since the gas flow path to the main burner 19 is opened, the flame transfers from the pilot burner 20 to the main burner 19.

When the internal temperature of the rice cooking pot reaches the rice cooking completion temperature, the soft ferrite 4 transforms and the magnetic permeability rapidly decreases, and the permanent magnet 6 is separated by gravity etc., so that the lever 8 and the operating lever 9 return to their original state (B The valve element 23 also comes into contact with the valve seat 21 by the spring 24, and the main burner 19 and pilot burner 20 are extinguished.

In addition, when the permanent magnet 6 is attracted to the soft ferrite 4 and the operating lever 9 is in the state A during cooking, etc., when the operating lever 9 is forcibly rotated back, the bent portion 15 of the bent tongue piece 12 comes into contact with lever 8 and rotates it back,
While the permanent magnet 6 is forcibly separated from the soft ferrite 4, it is also possible to forcibly extinguish the fire by operating the operating lever 9.

This makes it possible to repeat the ignition operation in the event of ignition error when using an ignition means such as piezoelectric ignition.

Furthermore, if the equipment is not used for a long time with the main cock closed, the inside of the rubber tube piping is replaced with air, and there is a problem with the ability to release the air by ignition operation when reusing it. During the depression operation of the operating lever 9, the gas circuit to the main burner 19 is also opened, which has the effect that air is discharged in a short time by the ignition operation.

However, although the structure is such that the flame is transferred to the main burner 19 after confirming the ignition of the pilot burner 20, it also prevents explosions and ignition accidents during the re-ignition operation after an ignition error. be done.

In the above embodiment, soft ferrite is used as the heat-sensitive element, but it is also possible to use other heat-sensitive elements such as bimetal. It is necessary to set the response relationship and, in addition, to set the interlocking relationship between the operating lever 9 and the lever 8.

As is already clear from the detailed description above, the gas rice cooker of the present invention has a gas inlet 017 in the valve body 10 and a valve chamber 1 in the valve body 10.
8, forming a gas flow path where one reaches the main burner 19 and the other reaches the pilot burner 20, and the valve chamber 18 is provided with a valve seat 21 on its inlet side, and a gas outlet to the main burner 19 is formed. Provide a valve seat 22 on the side and make these valve seats face each other,
The valve body 23, which is disposed between the valve seats 21 and 22 and which automatically closes the valve chamber 18 by means of a spring 24, is linked with the operation lever 9, and the lever 8, which responds to the heat-sensitive element, is operated within the operating range of the operation lever. Although it is characterized in that only a certain section inside is operated in a positive manner, it is possible to simplify the valve structure and lever structure in the fire extinguishing device of the gas rice cooker, and also to simplify the valve structure and the lever structure in the fire extinguishing device of the gas rice cooker. The main burner 19 can be ignited after confirming the ignition of the burner 20, and the gas rice cooker has sufficient air purge performance.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the embodiment of the present invention, and Fig. 2 is an exploded perspective view of the main parts showing the relationship between the lever 8 and the operating lever 9. ......Operation lever 10...Valve body, 17...Gas inlet, 18...Valve chamber, 19...Main burner, 20... ...Pilot burner, 21.22...
・Valve seat, 23...valve body, 24...spring.

Claims (1)

[Scope of utility model registration request] A gas passage is formed in the valve body 10 from the gas inlet 17 through the valve chamber 18, one reaching the main burner 19 and the other reaching the pilot burner 20, and the valve chamber 18 has a valve seat 21 on the gas inlet side. At the same time, a valve seat 22 is provided on the gas outlet side to the main burner 19, and these valve seats are made to face each other.
A valve body 23, which is disposed between 1 and 22 and which automatically closes the valve chamber 18 on the artificial side by a spring 24, is interlocked with an operating lever 9, and the lever 8, which responds to the heat-sensitive element, is operated within the operating range of the pushing lever. A gas rice cooker that is characterized by being positively interlocked only in a certain section.