JPS6039929B2 - Selective ignition method for multi-mouth gas appliances - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to household and commercial gas appliances that use various gases such as city gas, natural gas, propane gas, etc. The present invention relates to a selective ignition system for multi-mouth gas appliances that is useful for use.

The ignition method according to the present invention is based on a continuous ignition method by discharging the electric charge accumulated in a capacitor, and is characterized by improving the conventional selective ignition method and making it safer and more reliable. .

FIG. 1 shows an example of a conventional ignition system. The figure shows a case where there are two igniters. 1 is a high voltage generation unit, which is mainly composed of a high voltage transformer.

Reference numeral 2 denotes a power source; S, , S2 are switches for the power source 2 for supplying power to the high voltage generating unit 1;

S',,S'2 are high voltage selector switches, P,,P2 are spark plugs, G,, ○2 are gas cocks, T,,T2 are knobs, and the knobs T, are switches S,,, as shown by the dotted lines.
It is set to be interlocked with S' and gas cock G.
The same applies to the knob L. In the case of the above-mentioned type, to cause the spark plug P to discharge, first operate the knob T (usually the first step is pressed).

) Close the switch S, and the power source 2 is connected to the high voltage generation unit 1. Next, operate the knob T again (usually the second stage rotates).

) The switch S' is closed and the spark plug P starts discharging. At the same time, Gascock G. Since the ignition plug P and P are interlocked to open, the gas can be ignited at the spark plug P. When discharging the plug P2, it is sufficient to operate the knob T2, switches S2, S'2, and gas tank G2 in exactly the same manner. However, in the conventional system as described above, the switch S'
Because it is necessary to switch extremely high voltages, for example, about 15,000 volts, the switch mechanism is required to be of high quality and have high voltage resistance.

Furthermore, it is thought that the switch may deteriorate after long-term use, and a defect in the switch part may lead to discharge failure and even non-ignition of the gas, leading to a serious accident in terms of safety measures. Furthermore, if the wiring of the high-voltage part is routed around, or especially if it is routed through the appliance body, the parasitic capacitance will increase, resulting in a drop in the output voltage, and if discharge occurs between the appliance body and the high-voltage wiring. However, there are various drawbacks such as: All of these drawbacks are caused by using a switching device to perform switching operations under high pressure conditions.

Therefore, it is an object of the present invention to provide a system in which the above-described switching operation in a high voltage state is stopped and the switching operation is performed in a low voltage state. Another object of the present invention is to eliminate accidents with gas appliances and to reduce the total cost by simplifying the mechanism of the switch section.

FIG. 2 shows a basic circuit of the discharge ignition system used in the present invention. 2 is a power supply, 4 is an oscillation booster circuit, 5 is a trigger circuit section, 6 is an SCR (thyristor), 7 is a capacitor, 8 is a high voltage transformer, and 9 is a spark plug.

Here, the low voltage circuit is the circuit of the power supply 3 and the trigger circuit section, but in this example, if the switch changeover operation is performed in the power supply circuit section, all the circuit sections after that will be required in the same number as the number of igniters, which will increase the cost. becomes higher.

Therefore, the present invention provides a circuit system in which the basic circuit shown in FIG. 2 is further improved to reduce the number of parts.

FIG. 3 shows a schematic diagram of the discharge ignition system according to the present invention.

Power supply 2, oscillation booster circuit 4, trigger circuit 5, capacitor 7
is the same as the basic example shown in FIG. 2, but a changeover switch section 10 is provided after the trigger circuit 5. One of the trigger changeover switches has an SCR (thyristor) 6, a high voltage transformer 8, and a spark plug P, and the other one has an SCR 6' and a high voltage transformer 8.
', a spark plug P2 is provided. In this example, the case where the gas appliance has two gas appliances is explained, but it goes without saying that the same structure can be applied to the case where the gas appliance has two gas appliances or more, that is, multiple gas appliances. If you do it like this, SC
The advantage is that it is only necessary to use the same number of R6 and high-voltage transformers, and the rest can be the same.

In the case of this system, the changeover switch unit 10 has a low voltage of about several volts, so there is no failure that occurs in conventional switches, and the reliability and life of the switch can be significantly improved. FIG. 4 shows an embodiment of a gas appliance using the selective ignition system according to the present invention.

Components common to the conventional example shown in FIG. 1 are indicated using the same numbers. 11 is a low voltage unit that compactly combines an oscillation booster circuit, a trigger circuit, and a capacitor, 2 is a power supply, S, , S2 is a switch for power supply 2, S', , S'2 is a selection trigger changeover switch, P, , P2 is the spark plug, ○
,,G2 is a gas stick, T,,T2 is a knob and T,
are switches S, , S' and gas cock G. As shown by the dotted line, the linked state is set.

Selection trigger changeover switch S', S'2 and plug P,
, P2, a unit 12 including an SCR and a high voltage transformer between
, 12' are connected. If you want to ignite using the spark plug P, first operate the knob T (normally, press the first button).

) Power switch S. When the switch is closed, the power supply 2 is connected to the changeover switch section. Next, when the knob T is operated again (usually rotated to the second stage) and the selection trigger changeover switch S' is closed, the spark plug P starts discharging due to the operation of the unit 11. At the same time, the gas cock G is opened so that the gas can be ignited at the spark plug P. When the knob T is released, that is, when the first step of pressing is stopped, the power switch S is opened and the spark plug S stops discharging.

The discharge at plug P2 is exactly the same. As explained above, it is only necessary to increase the number of gas appliances according to the present invention, and it is extremely effective in eliminating accidents in the field of gas appliances, simplifying the mechanism of the switch part, and igniting various gas appliances. Provides an effective means for use in equipment.

[Brief explanation of the drawing]

FIG. 1 shows an example of a conventional ignition system. FIG. 2 shows a basic circuit diagram of the ignition system used in the present invention, and FIG. 3 shows a schematic diagram of the discharge ignition system according to the present invention. FIG. 4 shows an embodiment of FIG. 3. 2...
Power supply, S,, S2... Power switch, S',, S'
2...Selection trigger changeover switch, P,,P2...
...・Spark plug, 10...・Selector switch section, 11
...Low pressure unit, 12,12'...High pressure unit. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. A low-voltage unit including an oscillation booster circuit section, a power supply section, a capacitor, and a trigger circuit section, a trigger selection switch for switching the output of the trigger circuit to a plurality of high-voltage units, and each of the trigger selection switches. This selective ignition system for a multi-mouth gas appliance is provided with a high voltage unit consisting of a combination of an SCR and a high voltage transformer connected in series, a spark plug device which performs a discharging operation by the output of the high voltage unit, a power switch connected to the power source, and a gas cock device. 2. The selective ignition system for a multi-mouth gas appliance according to claim 1, wherein the power switch, the trigger selection switch, and the gas stove device are operably linked and connected by the same knob device.