JPH0233013Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an ignition device for a dental gas burner, and in particular, the ignition and extinguishing of the dental gas burner is performed using a momentary type operating switch such as a touch switch or a non-contact switch. In addition, the operation switch can be placed at any position away from the gas burner, for example, the operation switch can be installed in the most easily accessible place, such as the front of the work tape, and the The aim is to improve the operability of ignition and extinguishing operations.

Conventionally, when igniting a dental gas burner, the gas opening/closing tip is opened to let out the gas, and then the burner is ignited with a pine or the like, or a piezoelectric element is activated when the tip is operated to ignite the burner. However, all of them are cumbersome to operate, and as a result, they are often left lit during medical treatment, resulting in a lot of wasted gas.

The present invention was developed in view of the above-mentioned circumstances, and it makes it easy to ignite and extinguish gas, so that it is ignited only when in use, and is extinguished when not in use. The aim is to achieve significant savings and improve operability.

The figure is a diagram for explaining one embodiment of the ignition system for a dental gas burner according to the present invention. In the figure, 1 is a momentary type operation switch, 2 is a control circuit, 3 is a high voltage generator, and 4 is an electromagnetic Valve 5 is a gas ignition part, and by pressing operation switch 1,
A flip-flop circuit 2a disposed in the control circuit 2 operates, and for example, relay coils 2b and 2c operate according to its Q output signal, and the electromagnetic valve 4
At the same time as opening, the high-pressure generator 3 is energized to start discharging, and gas is ignited in the gas ignition section 5. The high-pressure generator 3 is energized by a timer or the like (not shown) for a period of time, for example, about 4 seconds, until the gas is completely ignited, and is turned off after 4 seconds have elapsed. Further, the operation switch 1 is of a momentary type, and once turned on, the fact that it has been turned on is maintained by the flip-flop circuit 2a as described above, and the electromagnetic valve 4 is opened.
The high pressure generator is discharged for a predetermined period of time during which gas is ignited and the high pressure generator is turned off after said predetermined period of time. When extinguishing the gas ignited as described above, when the operation switch 1 is turned on again, the output of the flip-flop circuit 2a in the control circuit 2 is switched from Q to Q.
The output signal of the flip-flop circuit 2a is held, the solenoid valve 4 is closed by this output signal, and the gas in the gas igniter 5 is extinguished. To ignite the gas again, the operation switch 1 may be turned on again, and the gas igniter 5 can be ignited and extinguished by the same operation. Although the example in which a touch switch is used as the operation switch 1 has been described above, the present invention
It is not limited to the above embodiments, for example,
It is easily understood that a non-contact photo sensor can be used in place of the touch switch so that the burner can be ignited and extinguished simply by bringing a hand close to the burner.

As is clear from the above explanation, according to the present invention, the operating switch can be installed at any position away from the gas burner, so the operating switch can be placed in a place where it is easiest to operate, for example, in front of the work table. It is possible to install it.
Therefore, the operation switch is easy to operate, and the gas can be easily ignited and extinguished, so that by igniting the gas only when gas is used, a large amount of gas can be saved.

[Brief explanation of the drawing]

The figure is a diagram for explaining one embodiment of the dental gas burner according to the present invention. DESCRIPTION OF SYMBOLS 1...operation switch, 2...control circuit, 3...high pressure generator, 4...electromagnetic valve, 5...gas ignition part.

Claims (1)

[Scope of utility model registration request] It has a momentary type operation switch, a high voltage generator, a solenoid valve for opening and closing a valve that supplies gas to a dental gas burner, and a control circuit that controls the operation of the high voltage generator and the solenoid valve. , the control circuit includes a flip-flop circuit and a timer, and when the operation switch is turned on, the solenoid valve is opened and the high voltage generator is energized at the same time by the Q (or) output signal of the flip-flop circuit; When the high voltage generator is energized for a predetermined time set by the timer and then cut off, and then the operating switch is turned on, the flip-flop circuit is inverted and the (or Q) output signal of the flip-flop circuit is turned on. An ignition device for a dental gas burner, characterized in that the solenoid valve is closed.