JPS6042370B2 - liquid fuel igniter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid fuel ignition device using a piezoelectric high voltage generator attached to a liquid fuel combustion device such as kerosene.

Conventionally, various types of liquid fuel ignition devices using piezoelectric high-voltage generators have been proposed, including those that inject liquid fuel from a nozzle to ignite a spark, and those that ignite a spark after forming liquid fuel into a foam. Things, etc.

However, conventional types have drawbacks such as low ignition accuracy, complicated equipment, and high cost. The present invention eliminates the above-mentioned drawbacks of the conventional technology, and has a simple structure and ignition by mounting a diaphragm with a wick attached to it that scatters liquid fuel in a mist, a diaphragm impactor, and a high voltage generator on the same board. To provide a liquid fuel ignition device that is easy to use. The present invention will be described below with reference to the embodiments shown in the drawings. In FIGS. 1, 2 and 3,
A hammer 3 that impacts the piezoelectric element of the piezoelectric unit 1
A piezoelectric high voltage generator 31 is attached to the substrate 21, with the pin 6 engaged with and projected from the cam window 5a provided in the housing 5, and the biasing spring 4 engaged with the hammer 3. Further, the pin 17 of the hammer 9, which has a protrusion 9a at the tip, is engaged with and protrudes from the cam window 11a provided in the housing 11, and is slidably engaged with the housing 11 and engaged with the hammer 9. A diaphragm impactor 32 containing a biasing spring 10 is attached to a substrate 21 in parallel with the piezoelectric high voltage generator. An operation lever 1 that slidably engages with guide plates 14 and 15 attached to both ends on the longitudinal center line of a substrate 21, respectively, and has stepped portions 13c to 13d.
Install 3. The piezoelectric high voltage generator 31 and the diaphragm impactor 32 are arranged so that the biasing springs stored in the operating lever 13 are on the same side, and the pins 6 and 17 are opposed to each other at the stepped portion of the operating lever 13. The substrate 2 is connected to the side 13a.
Attached to 1. The pedestal 2 of the piezoelectric element unit 1 is attached to the substrate 21 by engaging the side opposite to the side of the hammer 3 which is engaged with the piezoelectric element unit 1 housed in the casing 5.
A support stand 8 for a diaphragm 7 is attached to a base plate 21, and a lamp wick 16, which is engaged with a protrusion 9a of a hammer 9 and connected to a fuel tank 20 through a fuel supply pipe 19, is attached to its tip. A discharge gap is formed with the tip of the diaphragm 7, and the piezoelectric element unit 1
A discharge electrode 12 electrically connected to the substrate 21 via a high voltage cord 18 is attached to the substrate 21. Next, in the ignition operation, as shown in FIG. 3, when the operating lever 13 is pressed in the direction of arrow A, the pin 17 engaged with the stepped side 13a of the operating lever 13 moves along the stepped side 13b. Moving in the direction of arrow A, the biasing spring 10 is pressed by the hammer 9 and compressed to store the spring force.

When the operating lever 13 is further pressed, the pin 17 moves in the direction of arrow B along one side 11b of the cam window, and the operating lever 1
3, the hammer 9 separates from the step side 13a of the biasing spring 1.
A shock is applied to the diaphragm 7 by the spring force stored at zero.
This impact causes liquid fuel mist to be scattered around from the lamp wick 16 attached to the tip of the diaphragm 7, and when mixed with air, a flammable atmosphere is created. The lamp wick 16 is constantly sucking up liquid fuel in the fuel tank 20 through a fuel supply pipe 19 using a hand pipe phenomenon. On the other hand, in synchronization with the above operation, the pin 6 is similarly pressed in the direction of the arrow A by the operating lever 13, so that the biasing spring 4 is compressed by being pressed by the hammer 3, and the spring force is stored. When the operating lever 13 is further pressed, the pin 6 moves in the direction of the arrow B along one side 5b of the camshaft window and leaves the stepped portion 13a, and the hammer 3 is moved by the biasing spring 4 to the piezoelectric element unit 1. The piezoelectric element unit 1 generates a high voltage, which is guided to the discharge electrode 12 through the high voltage cord 18 and causes a spark discharge toward the tip of the diaphragm 7. At this time, the area around the wick 16 is in a flammable atmosphere, so the discharge energy causes the wick 1 to burn.
6 ignites. By pressing the operating lever 13, a piston is pressed to generate compressed air (not shown), which is guided to the vicinity of the lamp wick 16, and is blown toward the flame lit by the lamp wick 16, bending the flame. The flame is blown into the combustion section of a liquid fuel combustion device and ignited. After ignition operation lever 13
Move in the direction opposite to the direction of arrow A and return to the position before operation. At this time, a fire extinguishing cap 5 covers the lamp wick 16 (not shown) to extinguish the flame. Also, the operating lever 13
By providing steps at both ends of the board 21, the movement distance is regulated by the guide plates 14 and 15 attached to both ends of the board 21, and by inserting a spring into the operating lever 13,
(not shown), so that no external force is required to return to the original position after operation.

Next, from the time when the hammer 9 impacts the diaphragm 7,
After 8111S, the hammer 3 impacts the piezoelectric element unit 1 (if this order is reversed, it will not ignite). The above time difference can be obtained by appropriately selecting the strength of the urging spring and the position of the cam window. As described above, the liquid fuel ignition device according to the present invention has a simple configuration and ignites the liquid fuel combustion device directly with a flame simply by operating the operating lever, so that the flame spreads quickly.
Furthermore, the odor peculiar to petroleum used in liquid fuel is extremely low, and it is easy to move and relocate, which has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional plan view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line -■ in FIG. 1... piezoelectric element unit, 2... pedestal, 3...
...Hammer, 4...Biasing spring, 5...
...Housing, 5a...Cam window, 5b...Side, 6...Zen, 7...Diaphragm, 8...
...Support stand, 9...Hammer, 9a...
...Protrusion, 10...Biasing spring, 11...Housing, 11a...Cam window, 11b...Side,
12...Discharge electrode, 13...Operation lever, 13a...Step side, 13b...Step side, 13c...Step Part side, 13d... Step part side, 14... Guide plate, 15... Guide plate, 16... Light wick, 17... Pin, 18...
...High voltage cord, 19... Fuel supply pipe,
20... Fuel tank, 21... Board,
31...Piezoelectric high voltage generator, 32...
・Vibration plate impactor.

Claims (1)

[Claims] 1. Biasing springs provided in the piezoelectric high voltage generator 31 and the diaphragm impactor 32, which are arranged in parallel on both sides of the operation lever 13, which is movably mounted on the board 21 in the longitudinal direction and has a stepped portion. pins 6 of hammers 3 and 9 engaged with
17, the piezoelectric high voltage generator 31 and the diaphragm impactor 3
The hammer 9 is made to protrude from the cam windows formed in the casings 5 and 11 of the hammer 9 and engage with the stepped portion of the operating lever 13.
Discharge electrodes 12, which are electrically connected to the piezoelectric high voltage generator 31, are attached to the substrate 21 facing each other, forming a discharge gap with the tip of the diaphragm 7. liquid fuel ignition system.