JPH0361087B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a gas control device used in a gas stove.

Conventionally, a system in which a plurality of gas valves that are opened and closed are arranged side by side in a fuel passage connected to a burner, and the amount of gas supplied to the burner is controlled in multiple stages by a combination of opening and closing of these gas valves is, for example, the Utility Model Act of 1973. It is known from Publication No. -28551, etc. However, this method requires an operator to be provided for each gas valve and to selectively open each gas valve, which is troublesome to operate and is also inconvenient in terms of design.

Also, as seen in Japanese Patent Application Laid-Open No. 57-105614, an operating rod connected to each gas valve is operated to open the valve by an operating member facing the front end thereof and a common operating member that drives the operating member. Also known.

However, if the former on-off valve is simply opened and closed using a single common operating member of the latter, the opening/closing position of the intermediate gas valve will be adjusted in steps, making it impossible to adjust the gas amount as continuously as possible. There is an inconvenience.

The object of the present invention is to obtain a gas control device free of such inconveniences, and the present invention includes a minimum gas flow rate gas passage and a plurality of gas control passages in parallel with the minimum gas flow rate gas passage in the fuel passage connected to the burner. an operating member that is provided with a gas valve interposed in each of the gas control passages, and that each gas valve faces each operating rod connected thereto;
a gas control passage having a gas valve interposed therebetween, which is configured to be sequentially opened by a common operating member that drives the actuating member, and which is opened last among the gas control passages having the gas valve interposed therebetween; In the gas control passage except for
A throttle valve is provided to set the maximum gas flow rate flowing through each gas control passage, and a manual valve is provided in series with the minimum gas flow rate gas passage and the gas control passage.

Embodiments of the present invention will first be described with reference to the embodiments shown in FIGS. Gas burner connected to gas outlet 3,
Reference numeral 4 indicates a fuel passage provided in the gas valve body 1, 5 indicates a manual valve facing the fuel passage 4, and 6 indicates an operating member for opening the manual valve 5. The operating member 6 is an operating member on the front side of the machine frame. A push button 6a that is inserted through the panel 7, and an operating rod 6 that extends in front of the push button 6a and is inserted into the fuel passage 4.
The manual valve 5 consists of a manual on-off valve 5a fixedly installed on the operating rod 6b and an electromagnetic safety valve 5b installed on the upstream side opposite to the manual valve 5a, and the push button 6a is According to the pressing operation against the return spring 6c, the manual on-off valve 5a is first opened at the intermediate position, and then when the pressure is further pressed, the electromagnetic safety valve 5b is opened.

When the push button 6a is released from pressure as shown in FIG. 4, the engaging element 11, which is resiliently urged by the spring 10, fits into the locking hole 9 formed in the push button 6a, and its return operation is stopped at the intermediate position. When the separately provided fire extinguishing button 12 is pressed, the engaging element 11 is inserted into the locking hole 9.
The push button 6a is configured so as to return to the starting end position after retracting from the push button 6a.

In the drawing, 13 and 14 are gas passages 1 for minimum gas flow rate.
The gas control passage 15 for minimum gas flow rate has a throttle valve 18 for setting the minimum gas amount, and the gas control passages 13 and 14 have gas valves 16 and 17, respectively. Each gas valve 16, 17 is connected to each operating rod 20, 20.
The gas valve 16 is opened following the gas valve 17 by the actuating member 22 facing the , and the common operating member 21 that drives both the actuating members 21 , so that the gas valve 16 is opened first. Facing gas control passage 1
4 was provided with a throttle valve 19 for setting the maximum gas flow rate through it.

To explain this in detail, the operation member 21 is the operation panel 7
The actuating member 22 is provided so as to be slidable along a long groove 7a provided therein and stopped at a desired position by a knock spring 21a. 22
The gas valves 16 and 17 are sequentially opened via the gas valves 16 and 17.

Next, its operation will be explained.

When the operating member 21 is at the right end position shown in FIG. 3, the gas valves 16 and 17 remain closed. Therefore, when the gas on-off valve 5 is opened, the minimum amount of fuel is supplied to the gas burner A via the minimum gas flow rate gas passage 15.

Next, when moving the operating member 21 to the intermediate position, the operating member 22 pushes open the gas valve 17, so that the fuel supplied to the gas burner A is
Gas control passage 14 and minimum gas flow rate gas passage 15
A medium amount of fuel is supplied via the . At this time, since the maximum amount of gas flowing through the gas control passage 14 is the gas amount set by the throttle 18, the intermediate fuel supply amount is determined by this. The setting is easily determined, and in a state where the gas valve 17 slightly before this is not completely opened, the amount of gas can be obtained in accordance with the degree of opening.

When the operating member 21 is further moved to the left end position, the gas valve 16 also opens and all the passages 13, 14, 15 are opened.
It is supplied to gas burner A via. In other words, the maximum flow rate of fuel is supplied.

Note that the gas valves 16 and 17 shown in FIGS. 1 to 5
Although the valve is of a gas cutoff type, at least one of the valves may be a needle type gas valve as shown in FIG.

In the illustrated example, an operator 23 is provided that faces from the push button 6a of the manual operating member 6 onto the operating rod 20 of the maximum flow rate gas valve 16, and the push button 6
When pressing a, the large flow rate gas valve 16 was pushed open so that a large amount of gas was supplied at the time of ignition.

In the drawing, reference numeral 24 indicates an igniter facing the gas burner A, and the igniter 24 is connected to the push button 6a as shown in FIG.
The gas burner A is connected to a power source S via an ignition switch 25 which is closed at its terminal position in conjunction with the push button 6a, and the gas burner A is ignited by the igniter 24 when the push button 6a is at its terminal position.

Further, in the circuit shown in FIG. 5, after this ignition, the solenoid 5b' of the safety valve 5b is energized by the electromotive force of the thermocouple 26 facing the gas burner A, until the safety valve 5b is attracted and held in the open state. A capacitor 27 is provided to keep the safety valve 5b open during this period.

That is, the capacitor 27 is normally connected to the power source S and charged by the changeover switch 28 linked to the push button 6a, and is connected to the solenoid 5b' by pressing the push button 6a in the intermediate position. Thus, even if the push button 6a is immediately returned to the intermediate position and the pressure on the safety valve 5b is released after the burner A is ignited at the terminal position, the safety valve 5b is The solenoid 5b' is energized by the discharge from the capacitor 27, so that it is attracted and held in the open state. Furthermore, drawing 29 shows the operating rod 2.
This is a guide fixed to the gas valve body 1 that guides the gas valve 0.

Thus, according to the present invention, when fuel gas is supplied to the gas burner only through the minimum gas flow rate gas passage, the minimum amount of gas is supplied to the gas burner, and the minimum gas flow rate and the last opened gas valve are When supplying fuel gas to a gas burner via a gas control passage with the exception of a gas control passage with an interposed The maximum amount of gas flowing through the gas control passages excluding the gas control passage intervening with the gas valve to be opened is determined by the throttle valve interposed in the gas control passage, making it easy to set an intermediate gas amount. Moreover, when the gas valve is not fully opened, the amount of gas corresponding to the degree of opening is obtained, and the intermediate gas amount can be further changed.Furthermore, when all the valves are opened by the operating member, all The maximum amount of gas can be supplied to the gas burner through the gas control passage, and the amount of gas supplied to the gas burner can be easily controlled.

[Brief explanation of drawings]

In the drawings, Fig. 1 is a partially cutaway side view, Fig. 2 is a cross-sectional view taken along the - line, Fig. 3 is a front view with a partially cut away part of Fig. 1, and Fig. 4 is Fig. 3. FIG. 5 is an operating circuit diagram, and FIG. 6 is a diagram corresponding to FIG. 2 of another embodiment. 4... Fuel passage, 16, 17... Gas valve, 20
...operation rod, 21...operation member, 22...operation member.

Claims (1)

[Claims] 1 A minimum gas flow rate gas passage and a plurality of parallel gas control passages are provided in the fuel passage connected to the burner, a gas valve is interposed in each of the gas control passages, and each gas valve is connected to this. An operating member facing each operating rod, and a common 1 that drives the operating member.
The valve is configured to open the valve sequentially with the operation member,
A throttle valve for setting a maximum gas flow rate flowing through each gas control passage is provided in the gas control passages excluding the gas control passage having the gas valve interposed therebetween that is opened last among the gas control passages having the gas valve interposed therebetween. , a gas control device comprising a manual valve provided in series with the minimum gas flow rate gas passage and the gas control passage.