JPH0144944Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gas stove having an ignition device, and particularly to a gas stove having a re-ignition function.

[Prior art]

In general, a gas tank equipped with an ignition device has a main gas flow path that supplies the main fuel within the casing and a sub-gas flow path that supplies fuel during ignition, and both gas flow paths are opened and closed by a single lever. At this time, the main gas flow path is opened from the middle to the end of the lever's forward movement, and the auxiliary gas flow path is opened only at the end of the lever's forward movement.

On the other hand, when the lever is operated forward, the piezoelectric ignition device is turned on by the lever at the end of the forward movement of the lever, which opens the auxiliary gas flow path, and the fuel flowing out from the auxiliary gas flow path is ignited. This ignites the fuel flowing out from the main gas flow path.

After the ignition, the stopper prevents the lever from returning beyond a predetermined position, thereby closing only the auxiliary gas flow path.

By the way, in the above-mentioned conventional gas stove, when the lever is moved back to a predetermined position by the stopper, the piezoelectric ignition device has not yet completely returned to its original position.

Therefore, if the above-mentioned ignition operation by operating the lever is not achieved for some reason, the stopper can be released and the lever can be fully returned to its original state.
In other words, it was necessary to perform a reset operation and operate the lever again from the initial position.

This has the drawback that the operation is troublesome and the re-ignition operation cannot be carried out quickly, so that the amount of unburned gas flowing out increases during the re-ignition, which is dangerous.

[Problem that the invention attempts to solve]

This invention allows the piezoelectric igniter to be turned on and off in the region before the return operation of the lever that opens and closes the gas flow path, thereby making it possible to re-ignite without the need for a reset operation. The purpose is to obtain a gas stove that can be safely and quickly ignited.

[Means for Solving the Problems] In order to achieve the above object, the present invention is constructed as follows.

That is, a valve that opens and closes a gas flow path in the casing is normally closed and biased by a spring, a stem is connected to the valve, one end of which is made to protrude outside the casing, and a piezoelectric igniter is connected in parallel with one end of the stem. a valve arm that locks to one end of the stem; and a stopper arm that restricts the outward return operation of the valve arm at a predetermined position; an on lever that presses the valve arm in the direction of the valve opening operation; and the stopper arm. A reset lever is provided for pressing the piezoelectric ignition device in the release direction, and an actuation piece for turning on and off the piezoelectric ignition device is provided on the valve arm at a predetermined position prior to the reset operation of the valve arm.

[Effect]

When the on-lever is operated, the valve arm is actuated to open the valve via the stem, opening the gas flow path inside the casing.

On the other hand, when the valve arm moves forward beyond a predetermined position due to the above-mentioned operation of the on-lever, the actuating piece provided on the valve arm turns on the piezoelectric ignition device, thereby igniting the fuel flowing out from the gas flow path. become.

If you release the on lever in this state, the valve arm will return due to the repulsive force of the spring, and when this return action reaches the predetermined position, it will be stopped by the stopper arm, maintaining the open state of the gas flow path. .

On the other hand, the piezoelectric ignition device returns to its original position when the actuating piece returns to a predetermined position together with the valve arm.

Therefore, when the valve arm is moved forward again via the ON lever at the predetermined return operating position of the valve arm, the actuating piece will operate the piezoelectric igniter again when the gas flow path is open.

〔Example〕

Next, an embodiment in which the configuration according to the present invention is embodied will be described based on the drawings.

First, in the drawings, FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a sectional view thereof.
Reference numeral 1 denotes a casing, and within the casing 1 is formed a main gas flow path 2 that is L-shaped when viewed from the side.

A first valve hole 3 and a second valve hole 4 are formed in series in the lower part 2a of the main gas flow path 2, and these are opened and closed by a first valve body 5 and a second valve body 8.

The first valve body 5 is supported by a first stem 6 that is slidably supported at the rear end of the casing 1, and is always urged to the right, that is, always closed, by a first valve spring 7.

Further, the second valve body 8 is supported by a second stem 9 that is slidably supported at the front of the casing 1, and is always urged to the right, that is, always closed, by a second valve spring 10. The second stem 9 extends to the right of the casing, that is, in the front direction, and its left side is formed as a large diameter part 9a, and its right side is formed as a small diameter part 9b,
The right end portion 9c of the small diameter portion 9b is made to protrude outward from the casing 1.

A pin 11 is disposed horizontally and orthogonally to the outer end of the right end portion 9c and is locked therein, and a vertically intermediate portion of a valve arm 13 formed in a plate shape is brought into contact with the pin 11 from the outside.

The valve arm 13 is swingably connected to the upper part of an arm base 12 whose upper end is fixed to the right end wall of the casing 1 by an upper arm pin 14, and is biased to swing rightward by an upper arm spring 15.

Further, a stopper arm 16 formed in a plate shape at the lower part of the arm base 12 is swingably connected at its left end by a lower arm pin 17, and is biased upward by a lower arm spring 18.

An engaging pawl 13a having a narrow width is formed at the lower end of the valve arm 13, and an engaging hole 16a for fitting and locking the engaging pawl 13a is formed at the middle portion of the stopper arm 16 in the left-right direction. .

The engagement hole 16a allows the valve arm 13a to move forward,
In other words, when the valve arm 13 swings to the left, the engaging claw 13a is engaged, and then when the valve arm 13 moves back, that is, swings to the right, it engages with the engaging claw 13a when it reaches its predetermined position. The valve arm is arranged so as to prevent the valve arm from moving back at a predetermined position.

Here, the O-ring 19 is attached to the stem insertion hole of the casing 1 into which the right end of the large-diameter portion 9a of the second stem 9 is inserted, and this O-ring 19 and the second
The stem fitting hole of the casing 1 located between the small diameter portion 9b of the stem 9 and the stem fitting hole of the casing 1 is connected to a small diameter pilot gas outlet path 2c, that is, a sub gas flow path. .

The pilot gas flow path 2c is connected to the second stem 9
When the large diameter portion 9a is separated to the left of the O-ring 19, it communicates with the lower portion 2a of the gas flow path 2 through a stem insertion hole into which the right end side of the large diameter portion 9a is inserted.

When this communication starts, the valve arm 13
The valve arm 1
3 is the time at which the return is prevented by the stopper arm 16.

A piezoelectric ignition device 20 is attached to the lower part of the arm base 12 described above. This piezoelectric ignition device 20 consists of a pressing rod 21, a piezoelectric element section 22, and a spark discharge section (not shown), and the pressing rod 21 is connected to a second
By pressing leftward in the figure, an impact is applied to the piezoelectric element part 22, and the impact generates a high voltage in the piezoelectric element part 22, which is then passed through the lead wire to the outlet part of the pilot gas flow path 2c. Sparks are generated by a spark generator located at the

The pressing rod 21 has a return spring (not shown).
The valve arm 13 is normally biased back to the right in FIG.

The actuating piece 13b is arranged so as to face the pressing rod 21 immediately outside when it returns, with the stopper arm 16 restricting the movement of the valve arm 13 in the return direction at a predetermined position.

Further, the lever pin 23 is rotatably attached to the arm base 12 described above, and the lever pin 23 is rotatably attached to the arm base 12.
An on lever 24 and an off lever 25 are installed in parallel.

The on lever 24 is integrally attached to the lever pin 23, and the off lever 25 is rotatably attached to the lever pin 23.

A lever spring 26 is attached to the lever pin 23, and one end of the lever spring 26 is engaged with the lever pin 23 and the other end is engaged with the off lever 25, so that the elastic force of the lever spring 26 causes the on lever 24 to move to its operating piece 24a.
comes into contact with the valve arm 13 from the outside, and the off lever 25 is biased so that its operating piece 25a returns to the outside.

The operating piece 25a of the off lever 25 is located close to the outside of the stopper arm 16, and when the off lever 25 is activated, that is, the operating piece 25a is rotated to the left in FIG.
6 is released, that is, rotated downward in FIG. 2, so that the stopper arm 16 faces the outer end of the stopper arm 16 in a downwardly inclined manner toward the left.

Note that the elastic force of the lever spring 26 mentioned above is set smaller than the elastic force of the arm spring 15, and the pressing force of the valve arm 13 by the on lever 24 via the lever spring 26 causes the valve arm 13 to open. That is, in FIG. 2, it should not rotate to the left.

Next, the operation of the above embodiment will be explained.

First, as shown in FIG. 2, in a state where the first and second valve bodies 5 and 8 close the first and second valve holes 3 and 4, if the on lever 24 is pushed down and rotated clockwise, the The result will be as shown in Figure 3.

That is, the operating piece 24a of the on-lever 24 rotates the valve arm 13 to the left, and presses and moves the second stem 9 to the left via the pin 11.

As a result, the second valve body 8 is operated to open, and
The second stem 9 presses the first stem 6 to the left,
The first valve body 5 is opened, and fuel gas flows into the main gas flow path 2.

At the same time, the small diameter portion 9b of the second stem 9
9, the pilot gas flow path 2c communicates with the main gas flow path 2, and the pilot gas flow path 2c
Fuel gas is also distributed.

On the other hand, along with the valve arm 13, the actuating piece 13a
moves to the left and presses the pressing rod 21 to the left, which activates the piezoelectric ignition device 20 and ignites the gas flowing out from the pilot gas flow path 2c. The gas flowing out from the flow path 2 will be ignited.

Further, due to the leftward movement of the valve arm 13, the engaging claw 13a of the valve arm 13 engages the engaging hole 16 of the stopper arm 16.
a, the stopper arm 16 moves upward due to the elastic force of the lower arm spring 13, and the engagement hole 16a fits into the engagement claw 13a.

Next, when the on lever 24 is released, the state shown in FIG. 4 is achieved.

That is, the elastic force of the first and second valve springs 7, 10 and the upper arm spring causes the first and second stems 6,
9 and the valve arm 13 move to the right, and when the amount of rightward movement reaches a predetermined amount, the engagement claw 13a collides with the engagement hole 16a.

As a result, the first
Further rightward movement of the second stems 6 and 9 is prevented,
The first and second valve bodies 5, 8 are held open, and the right end of the large diameter portion 9a of the second stem 9 is fitted into the O-ring 19, closing the pilot gas passage 2c.

Therefore, only the gas flowing out from the main gas flow path 2 continues to burn.

On the other hand, as the valve arm 13 moves to the right by the predetermined amount, the actuation piece 13b also moves to the right by a predetermined amount, whereby the pressing rod 21 returns to its original position.

Therefore, when the on-lever 24 is moved to the left again from the state shown in FIG. 4, that is, turned on, the pilot gas passage 2c is opened again and the piezoelectric ignition device 20 is ignited.

Next, from the state shown in FIG. 4, if the off lever 25 is pressed, that is, turned off, the state will be as shown by the imaginary line in FIG.

That is, when the off-lever 25 is pressed, the operating piece 25a rotates the stopper arm 16 clockwise to disengage the engagement hole 16a from the engagement claw 13a.

As a result, the elastic force of the upper and lower arm springs causes the valve arm 13 and the stopper arm 1 to
6 to the initial position, and the main gas flow path 2 is closed as shown in FIG.

[Effect of idea]

As is clear from the above embodiments, according to the configuration of the present invention, when an ignition error occurs, the ignition operation can be performed again by operating the off lever, that is, resetting the valve arm, without completely returning the valve arm. This has the effect of safely and quickly re-igniting the flame.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the gas tank according to the present invention, Fig. 2 is a cross-sectional side view thereof, and Fig. 3
4 to 4 are cross-sectional side views corresponding to FIG. 2 showing the ignition operating state, and FIG. 5 is a side view of essential parts showing the ignition operating state. 1... Casing, 2... Main gas flow path, 2c...
... Pilot gas flow path, 3, 4 ... First and second valve holes, 5 ... First valve body, 6 ... First stem, 7 ...
First valve spring, 8... First valve body, 9... Second stem, 10... Second valve spring, 13... Valve arm, 13a... Engaging claw, 13b... Operating piece, 16
...Stopper arm, 16a...Engagement hole, 20...
...Piezoelectric ignition device, 24...On lever, 25...
Off lever.

Claims (1)

[Scope of utility model registration request] A valve that opens and closes a gas flow path in the casing is normally closed and biased by a spring, a stem is connected to the valve and one end thereof projects outside the casing, a piezoelectric ignition device is provided in parallel with one end of the stem, and the above-mentioned A valve arm that locks on one end of the stem and a stopper arm that restricts the outward return operation of the valve arm at a predetermined position are provided, an on lever that presses the valve arm in the valve opening direction and a stopper arm that pushes the stopper arm in the release direction. 2. A gas tank having a re-ignition function, comprising: a reset lever that is pressed against the valve arm; and an actuating piece that turns on and off the piezoelectric ignition device at a predetermined position prior to the return operation of the valve arm.