JP2709660B2 - Gas valve for opening and closing gas - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas valve for opening and closing a gas, which is capable of performing all operations from ignition to combustion, thermal power and temperature adjustment, and fire extinguishing by pressing a push button.

[0002]

2. Description of the Related Art A gas valve for automatic ignition that ignites, burns, and extinguishes a gas by a pushing operation using a push button is known in Japanese Utility Model Laid-Open Publication No. 64-38455.

[0003]

Such a conventional gas valve for automatic ignition is a thermoelectric type valve which opens when a push button is pushed in, a holding mechanism therefor, and a valve which automatically closes when gas disappears. The safety valve (thermocouple type) is used in combination with the regulator. Therefore, if this is used as a gas valve for the regulator, the control of the regulating temperature and the safety against abnormal overheating are insufficient, and it may cause burns or fire. There was a problem that it became.

The present invention has been made in view of such problems of the prior art, and has as its object to improve the temperature control function of a gas stove and the like, and to make the operation of a fire prevention safe, Another object of the present invention is to provide a safe and small gas opening / closing gas valve which is easy to handle.

[0005]

In order to achieve the above object, a gas valve for opening and closing a gas according to the present invention is turned on and off in a push-push type by a case body 3 having a gas inlet 1 and a gas outlet 2. An automatic ignition gas valve comprising a push button 4, a main valve 5 opened by being pushed by pushing the push button 4, and a switch 6 for an igniter, wherein a first solenoid valve SV1 for opening and closing gas is provided. And a second solenoid valve SV2 for adjusting the temperature.
The second solenoid valves SV1 and SV2 are arranged in series, and the first and second solenoid valves are installed upstream of the main valve 5.

When the main valve 5 is opened, the first and second
It is preferable that the electromagnetic valves SV1 and SV2 are simultaneously energized to open the valve seat 7 with the combined electromagnetic attraction of the two electromagnetic valves.

A main valve 5 is provided on a first rod 11 which is pushed by a push button 4, and the first rod 11 is connected to a first / second solenoid valve SV1 / SV2 by a second valve.
It is also possible to provide a configuration in which the second rod is pushed by the first rod to assist the opening of the solenoid valve.

[0008]

FIG. 1 shows a closed state. When the push button 4 is now pushed in from this state, the slide body 8 is pressed against the bias of the spring 9.
Move together to push down the first rod 11 against the main spring 10, so that the main valve 5 is opened. Also at the same time
The second rod 12 is pushed down by the tip of the rod 11.
The pushing of the second rod 12 causes the valve seat 7 to open and the gas inlet 1 and the gas outlet 2 to communicate with each other, and simultaneously the first and second plungers 13 and 14 are manually pushed into the magnet attraction positions. When the push button 4 is pressed, the igniter switch 6 is turned on, and the igniter (not shown) operates.

When the push-button 4 is released and the push-in is released, the spring 9 attempts to return.
Since the holding mechanism 15 is operated and held, the pushed-in state is maintained. Next, when a current is applied to each of the coils 26 and 27 of the first and second solenoid valves SV1 and SV2, an electromagnetic force acts on each of the coils 26 and 27 so that the first and second plungers 13 and 14 are moved by the yoke 18 by the electromagnetic force. -Adsorbs to 19, and each valve is opened to hold it at the adsorption position. At this time, as shown in FIG. 2, since the temperature control valve 20 is also opened together with the valve seat 7, the combustion state becomes large combustion.

Next, when the second solenoid valve SV2 is de-energized while the first solenoid valve SV1 is energized, the second plunger 14 becomes free and returns together with the second rod 12. The return of the second rod brings the temperature control valve 20 into a closed state. When the temperature control valve 20 is closed, as shown in FIG. 3, a small amount of gas which has been narrowed down from only the orifice hole 21 provided in the valve flows to the downstream side. It becomes burning.

When the current of the first solenoid valve SV1 is cut off, the valve seat 7 as a safety valve closes immediately, so that the gas stops instantaneously.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A push button 4 is attached to the outer end of a slide body 8 and is operated in a push-push manner. When the slide body 8 is pressed once against the urging of the spring 9, the slide body 8 is held by the holding mechanism 15 when it is returned by about a half stroke. The configuration of the holding mechanism 15 is not the gist of the present invention, so details thereof are omitted. However, when the holding mechanism 15 is pressed again at the push-in holding position, it is released and returns to the original position at once.

The needle valve 2 is located immediately before reaching the gas outlet 2.
2 is provided. The needle 22 moves forward and backward by the rotation operation of the linear lever 23 to limit the gas outflow amount to large, small, large, medium and small, and adjusts the heating power. These adjustments are performed on the downstream side of the main valve 5. That is, adjustment on the secondary side. Since the structure of the needle valve mechanism is not the gist of the present invention and is not different from that of the conventional type, the details are omitted.

The first and second solenoid valves SV1 and SV2 are slidably fitted into coils 26 and 27 wound around bobbin cases 24 and 25 and vertical holes 28 and 29 at the centers of the bobbin cases 24 and 25, respectively. Plungers 13 and 14
The yokes 18 and 19 become electromagnets to attract the plungers upon excitation, and the plungers 13 and 14 are biased by springs 33 and 34 in a direction away from the yokes.
The second rod 12 is provided with first and second solenoid valves SV1 and SV1.
The two rods are slidably inserted into the vertical holes 28 and 29 of the bobbin case in which one rod is connected in series so as to be common,
On the way, the first and second plungers 13 and 14 are attached. The first plunger 13 is loosely attached to the rod 12. The valve seat 7 is fixed to the plunger 13, but is formed of an elastic body such as rubber, so that the valve seat 7 is attached to the rod 12 so as to freely move in the axial direction and be displaced. As shown in FIGS. 2 and 3, the valve seat 7 is formed by integrally connecting an outer ring 7a and an inner ring 7b with a thin film intermediate ring 7c. The temperature control valve 20 is located in the middle of the second rod 12,
Orifice hole 2
One. The valve seat 7 and the temperature control valve 20 are provided on the upstream side of the main valve 5, that is, on the secondary pressure side, and the main valve 5 and the first and second solenoid valves SV1 and SV2 are arranged on a straight line.

[0015]

As described above, the present invention has a main valve pushed by a push button, a first solenoid valve SV1 for opening and closing gas, and a second solenoid valve SV2 for temperature adjustment. ,
Since the main valve 5 and the first and second solenoid valves SV1 and SV2 are arranged in series, and the first and second solenoid valves are installed on the upstream side of the main valve 5, the gas valve is opened and closed. First
When the second solenoid valve for temperature control is turned on or off by energizing or shutting off the second solenoid valve for temperature control in a state where the solenoid valve is turned on by energization, the valve seat and the temperature on the upstream side of the main valve, that is, on the primary pressure side of the gas. The temperature control can be freely performed by opening and closing the valve control, the safety can be improved by stable thermal power, and a small and high-performance gas valve for automatic gas ignition can be easily and inexpensively provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a gas valve for opening and closing a gas according to the present invention.

FIG. 2 is an enlarged sectional view showing operating states (opening) of first and second solenoid valves.

FIG. 3 is a sectional view of an operation state of the first solenoid valve (during small combustion).

[Explanation of symbols]

 Reference Signs List 1 gas inlet 2 gas outlet 3 case body 4 push button 5 main valve 7 valve sheath 11 first rod 12 second rod 20 temperature control valve 21 orifice hole SV1 first solenoid valve SV2 second solenoid valve

Claims (3)

(57) [Claims] 1. A push button 4 which is turned on and off in a push-push manner in a case body 3 having a gas inlet 1 and a gas outlet 2, and a main valve which is opened by being pushed by the push button 4 being pushed in. 5 and a switch 6 for an igniter, comprising a first solenoid valve SV1 for opening and closing gas and a second solenoid valve SV2 for adjusting temperature, and the main valve 5 First and second solenoid valves SV1 and SV
2. A gas valve for opening and closing a gas, characterized in that the gas valves 2 are arranged in series and the first and second solenoid valves are installed upstream of the main valve 5. 2. When the main valve 5 is opened, the first and second solenoid valves SV1 and SV2 are simultaneously energized to open the valve seat 7 with the combined electromagnetic attraction of the two solenoid valves. The gas valve for opening and closing gas according to claim 1. 3. A main valve (5) is provided on a first rod (11) pushed by a push button (4), and the first rod (11) is connected to a first / second solenoid valve (SV1) / (SV2). The rod (12) is opposed to the first rod, and the second rod is pushed by the first rod to assist in opening the solenoid valve.
A gas valve for opening and closing gas according to the description.