JPH0120566Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention allows the main gas valve to be switched between two positions, a fully closed position and a fully open position, with a single operating piece in gas stoves that use all primary air, such as those using an infrared combustion method. The present invention relates to a gas control valve device.

Previously, the main gas valve could be switched between the fully closed position and the fully open position using an operating piece, for example, by Jikosho.
It is known from the publication No. 45-13256.

However, this requires two operating pieces to switch the main gas valve between the fully closed and fully open positions.
The problem is that the structure becomes more complex.

The object of the present invention is to obtain a gas control valve device for gas stoves that is free from such defects, and includes an electromagnetic safety valve 2, a main gas valve 3, and an ignition gas valve 4 installed in a valve housing 1. An operating rod 5 is inserted into the housing 1, which is movable from a stop position to an intermediate valve opening position against a spring 6, and then to a final ignition position. The valve was opened,
At the ignition position, the ignition gas valve 4 is opened in addition to the main gas valve 3, and the electromagnetic safety valve 2 is opened by pressure. A control piece 8 which is interlocked with the actuation rod and is opposed to the operating rod 5 is normally held in an inactive standby position by a spring 9, and a stopper 10 is elastically pressed into engagement with the control piece 8.
When pushing the operating rod 5 to the opening and ignition operating positions of the valves 2, 3, and 4 using the control piece 8 that is linked to the pressing and swinging motion of the operating piece 7, the actuator 7 and the control piece 8 move over the stopper 10. The control piece 8 is provided with a locking protrusion 11 which is stopped by the stopper 10 when the spring 9 swings back, and in this stopping position, the operating rod 5 is held at the intermediate open position. When the operating piece 7 is to be swung back from the position toward the standby position, the operating piece 7 releases the locking protrusion 11 by the stopper 10 to return the control piece 8 to the standby position, and then the operating rod 5 is moved. It is configured to rapidly return to the stop position.

Embodiments of the present invention will be described with reference to the drawings.

In the drawing, reference numeral 1 denotes a valve housing having a gas inlet 12, a main gas outlet 13, and an ignition gas outlet 14; A third communication port 17 is formed between the gas outlet 13 and the ignition gas outlet 14, the first communication port 15 is opened and closed by the electromagnetic safety valve 2, and the second and third communication ports 16 and 17 are connected to the main gas valve 3, respectively. The ignition gas valves 4 are opened and closed respectively, and these communication ports 15,
16, 17 and the on-off valves 2, 3, 4 are located in a straight line, and the main gas valve 3 and the ignition gas valve 4 are provided on the operating rod 5. The electromagnetic safety valve 2 is disposed opposite to the tip of the operating rod 5, and is pressed open at the tip by the movement of the operating rod 5, and the opened state is maintained by suction by an electromagnetic device. It is operated by using the electromotive force of a thermocouple installed in the combustion section of the engine.

The operating rod 5 is always biased by a spring 6 in the direction of closing the valves 3 and 4 on the shaft, and is movably inserted with its base end protruding outside the valve housing 1.

An operating piece 7 and a control piece 8 that swing around a fixed shaft 18 are provided outside the housing 1, and the bent portion 8a of the control piece 8 is opposed to the protruding base end of the operating rod 5, and the operating piece 7 and the control piece Both pieces 8 are biased by a spring 9 in a direction away from the base end of the operating rod 5, and are stabilized in a standby position stopped by a stopper 19 provided on the housing 1, and the operating piece 7 is moved away from the grip piece 7a. The control piece 8 is interlocked in the same direction only when the control piece 8 is pressed and swung against the spring 9, and this swiveling causes the bending portion 8a to push the operating rod 5 in the valve-opening direction. .

A stopper 10 at the tip of a link 20 is pressed into engagement with a control piece 8 that moves in the pressing and swinging direction of the operating piece 7 and the control piece 8 when the operating piece 7 presses and swings. When 8 swings in the same direction, it presses the stopper 10 and overcomes it, but when the spring 9 returns to swinging, the stopper 10 prevents the return movement. Ta.

In the above configuration, as shown in FIG. 2, the operating rod 5 is moved backward to the right in the drawing by the spring 6, and the valves 2, 3, and 4 have their communication ports 15, 16, and 17 fully closed. Yes, and the swinging operation piece 7 has a spring 9
It is held in the inoperative standby position, which is stopped by the stopper 10 due to the bias of Since the bent portion 8a pushes the base end of the operating rod 5 against the spring 6, the electromagnetic safety valve 2 is pressed open by the tip of the rod 5 against the spring 22, opening the communication port 15, and valve 3,
4 also opens the respective communication ports 16 and 17, and the gas passage becomes fully open as shown in Figure 3. As will be described later, the ignition operation is performed by closing the operating switch of the pilot ignition device in synchronization with this fully opening operation. We ignite the main gas. Incidentally, when the operation piece 7 and the control piece 8 swing when fully opened, the locking protrusion 11 of the control piece 8 presses against the stopper 10 and overcomes it.

After the operating piece 7 is pressed and swung all at once as described above, when the pressure is released, both the operating piece 7 and the control piece 8 are swung in the return direction by the spring 9. The side edges of the control piece 8 and the locking protrusion 11 of the control piece 8 are both stopped by the stopper 10, and the backward movement is prevented. At this time, the operating rod 5
The gas valve stops at the intermediate double-acting position due to the bias of the spring 6, and the valves 2 and 3 continue to remain open, but the pilot gas valve 4
The valve closes the third communication port 17 and becomes the intermediate valve open position shown in FIG. 4, and combustion of the main gas continues without change.

If the operation piece 7 is pushed up from the bottom surface as shown by the arrow in FIG.
1 and when the stopper 10 is released from the locking protrusion 11, the control piece 8 is moved by the spring 9.
When the control piece 8 is energized, it rapidly moves back and returns to the inactive standby position together with the operating piece 7, and the operating piece 7 is stopped at that position by the stopper 19. Then, the valve is quickly returned from the intermediate valve opening position to the starting position shown in FIG. 2, and all of the valves 2, 3, and 4 are instantly fully closed and ready for the next valve opening operation. Moreover, as described above, the operating rod 5 has a locking portion 11 of the control piece 8 that is connected to the stopper 1.
0, the valve is held in the open position, so that the stopper 10 does not disengage from the locking protrusion 11 due to intentional or accidental swinging of the operating piece 7 in the backward direction. , the gas valve 3 on the rod 5 does not move.

The pilot ignition operation switch described above is provided with two switches S ₁ for closing the power supply circuit and a switch S ₂ for ignition operation of the ignition device 23 on the swing locus of the operation piece 7.
When the operating piece 7 is pressed and swung, first the switch _S1 for closing the power supply circuit is operated, and then the ignition operation switch _S2 is operated.

In the illustrated embodiment, a fire power adjustment device is incorporated in the valve housing 1.

That is, two gas outlets 25 and 26 are arranged in parallel to communicate with the main gas outlet 13 via a gas governor 24, and one of the outlets 26 is opened and closed by a valve 27, and when the valve 27 is opened, both outlets are opened. The main gas can be adjusted in two stages to increase the capacity by taking out the main gas from 25 and 26, or to reduce the capacity by taking out the main gas from only one outlet 25 by closing the valve 27. It is provided on an operating rod 28 which is biased in the valve closing direction by a spring 29, and is opened and closed by the forward and backward movements of the operating rod 28.

Further, the forward and backward movement of the operating rod 28 is controlled by a swinging operating piece 30 similar to the swinging operating piece 7 for controlling the movement of the operating rod 5 in the gas control valve device described above, as well as a control piece 31 interlocking therewith. Since the means are the same, the explanation thereof will be omitted.

Furthermore, by pressing and swinging the swinging operation piece 30, the valve 27 is
When the two outlets 25 and 26 are opened and the two outlets 25 and 26 are used at the same time, a switch _S3 is provided which is activated when the operation piece 30 is swung so that the capacity of the blower 32 installed in the stove can be changed from weak to strong.

FIG. 6 shows the operating electrical circuit of the ignition device 23 as well as the blower 32, in which the operating piece 7 first switches the switch S _{1 .}
The power supply circuit of the ignition device 23 and the blower 32 is closed, and then the ignition device 23 is started by operating the switch _S2 , and the capacity of the blower 32 is adjusted by the switch _S3 using the operating piece 30 for adjusting the capacity. can now be switched from weak to strong.

According to the present invention, the swing operation piece 7 is provided outside the valve housing 1.
and a control piece 8 which is interlocked when pushed and is opposed to the proximal end of the operating rod 5, are provided so that they are normally held in an inactive standby position by a spring 9,
When the stopper 10 is elastically pressed into engagement with these, and the control piece 8, which is linked to the pressing and swinging movement of the operation piece 7, pushes the operation rod 5 to the opening position of each valve 2, 3, 4 and the ignition operation position. When the operating piece 7 and the control piece 8 are swung back by the spring 9 after passing over the stopper 10, the locking protrusion 11 is stopped by the stopper 10.
is provided on the control piece 8, so that the operating rod 5 is held at the intermediate valve opening position in this stopping position, and when the operating piece 7 is to be swung back from this stopping position toward the standby position, the operating piece 7 is Stopper 10
The control piece 8 is returned to the standby position by releasing the locking protrusion 11, and the operating rod 5 is rapidly returned to the stop position. By releasing the pressure, the operation piece 7
The locking protrusion 11 of the control piece 8 that swings together with the valve engages with the stopper 10, and the control piece 8 can reliably lock the operating rod 5 in the intermediate valve open position. When the piece 7 is swung back toward the standby position, the latching protrusion 11 is released from the stopper 10 by the oscillating piece 7, and the operating rod 5 is quickly returned to the stop position. The main gas valve 13 can be switched between the fully open and fully closed positions by pressing and swinging the single operating piece 7, and the operating rod 5 is able to switch the main gas valve 13 between the fully open and fully closed positions. Since the locking protrusion 11 is held in the valve open position by engaging with the stopper 10, the operating piece 7 can be moved in the backward direction intentionally or accidentally within a range in which the stopper 10 does not disengage from the locking protrusion 11. The gas valve 3 on the rod 5 does not move due to the rocking of the rod.
Therefore, the gas valve 3 is reliably kept at the fully open position, and there is no half-open/close state in the switching operation, which has the effect of obtaining a gas control valve device suitable for an all-primary air type gas combustor.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a plan view, FIG. 2 is a side view taken along the line -- in FIG. 1, and FIGS. Figure 5 is a side view taken along the - line in Figure 1;
The figure is an electrical circuit diagram of the actuation switch. 1...Valve housing, 2...Solenoid safety valve, 3...Main gas valve, 4...Ignition gas valve, 5...Operation rod, 6...
... Return spring, 7... Swing operation piece, 8... Control piece,
9... Spring, 10... Stopper, 11... Locking protrusion.

Claims (1)

[Scope of utility model registration request] An electromagnetic safety valve 2, a main gas valve 3, and an ignition gas valve 4 are assembled in a valve housing 1, and the valve housing 1 can be returned from a closed position and moved against a spring 6 through an intermediate valve open position and then to a terminal ignition position. The operating rod 5 is inserted, and the main gas valve 3 is opened when the operating rod 5 is in the open position.
At the ignition position, the ignition gas valve 4 is opened in addition to the main gas valve 3, and the electromagnetic safety valve 2 is opened by pressure. A control piece 8 which is interlocked when the actuator is activated and is opposed to the base end of the operating rod 5 is normally held in an inactive standby position by a spring 9, and a stopper 10 is elastically pressed into engagement with these pieces. and the control piece 8 interlocks with the pressing and swinging of the operation piece 7.
When the operating rod 5 is pushed to the opening position of each valve 2, 3, 4 and the ignition operation position, it is pushed over the stopper 10, and when the operating piece 7 and the control piece 8 are swung back by the spring 9, it is pushed over the stopper 10. A locking protrusion 11 to be stopped is provided on the control piece 8, and in this stopping position, the operating rod 5 is held at an intermediate valve opening position, and the operating piece 7 is returned from this stopping position to the standby position. When moving the gas stove, the operating piece 7 releases the locking protrusion 11 by the stopper 10 to return the control piece 8 to the standby position, and the operating rod 5 is rapidly returned to the stop position. Types of gas control valve devices.