JPS60140020A - Automatic ignition device for gas burner - Google Patents

Abstract

PURPOSE:To perform both a supplying of gas to a burner part and an ignition with only one operation by a method wherein a piezoelectric ignition means is cooperatively operated with an operating part in case that the valve is kept opened. CONSTITUTION:When a pushbutton 39 is pushed toward a pushing position, a permanent magnet 19 for driving the valve is sucked toward the permanent magnet 24 for operating the valve to open the gas passage. With this arrangement, gas fed to the inlet gas passage 14 is passed through the first valve storing concave part 12, a central gas passage 16, an outlet gas passage 15 and a pipe 18 and is supplied to the burner 3. When the pushbutton 39 is pushed up to a pushing position, the hammer shaft 38 may strike the piezoelectric element 35. With this arrangement, a high voltage is produced by the piezoelectric element 35, this voltage is applied between the extremity end of the ignition rod 37 and the burner 3, thereby to ignite the gas injected from the burner 3. With this arragement, it is possible to perform both a gas supplying and an ignition of gas with only one operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a novel automatic ignition device for a gas combustor. Specifically, it relates to an automatic ignition device in a gas combustor such as a gas water heater or a gas range, and can supply gas to a part of the burner and the gas to the burner with just one operation of opening the operating section. The object of the present invention is to provide a new automatic ignition device for a gas combustor, which ignites gas ejected from a portion of a burner and is excellent in operability and safety.

BACKGROUND ART AND PROBLEMS Conventionally, various automatic ignition devices for gas burners such as gas water heaters and gas ranges have been proposed. For example, a gas cock that opens and closes the gas passage and an ignition cock that ignites the gas are provided so that they can move independently, so that one hand operates the gas cock and the other hand operates the ignition cock. There is. Although each operating part of such an ignition system can be configured relatively easily, the ignition operation is complicated, and if both cocks are not operated at the right time, ignition errors may occur or gas leaks may occur. There is a danger that this may occur.

Furthermore, for example, there is a device in which a so-called push-and-turn type cock is provided, and by pressing the cock in the axial direction and rotating it in the ignition direction, the gas passage is opened and ignition is performed. . Such an igniter is -
When you look at it, it seems that the ignition is done automatically with one action, but in reality, two actions are required: pressing the cock and rotating it, and the operation requires a certain amount of force. . Furthermore, if the cock is not pushed in enough, ignition may not occur, resulting in a risk of ignition error or gas leakage.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and allows gas to be supplied to a part of the burner and gas to be ejected from the part of the burner with just one operation of opening the operating section. An object of the present invention is to provide a new automatic ignition device for a gas combustor, which has excellent operability and safety, and is capable of igniting gas.

Summary of the Invention In order to achieve the above-mentioned object, the automatic ignition device for a gas combustor of the present invention comprises a valve for opening and closing a gas passage, and a piezoelectric ignition means for opening and closing the valve. is characterized in that it is linked to the operating section and is activated when the valve is opened.

EMBODIMENTS Below, details of the automatic ignition device for a gas combustor of the present invention will be explained according to embodiments shown in the main drawings. What is shown in the drawings is an embodiment in which the present invention is applied to an automatic ignition device for a water heater.

In the figure, ■ is a water heater, which consists of a heated tank 2, a burner 3 disposed below it, an automatic ignition device 4 for igniting the burner 3, and various piping.

5 is a housing of the automatic ignition device 4;
are combined in approximately three layers in the front-back direction (in Figure 2, the upper side of the page is the front, and the lower side is the rear. Also, the right side of the page of the same figure is the right side, and the left side is the left side). It consists of a base part 6, an intermediate part 7, and a front part 8. A front cover 9 is disposed on the front surface of the front section 8, and a side cover 10 is disposed on the right half of the front surface of the intermediate section 7. Each part 6.7 and 8 and each cover 9.1 constituting these housing 5
0 are integrally connected by screws 11, 11, . . . Φ (see Fig. 3).

Reference numeral 12 denotes a first valve storage section which is formed at a position offset to the left side of the base section 6 and opened at the front surface of the side section 6, and has a substantially circular longitudinal cross-sectional shape. 13.13
(See FIG. 3) is a slit formed in a portion located on the opposite side of the center of the first storage recess 12. 14
is a gas passage on the inlet side formed in the lower part of the base portion 6, and communicates with the first four valve storage portions 12. Further, reference numeral 15 denotes an outlet side gas passage formed in the upper part of the base 6, and the gas passage 15 is connected to the first valve storage section 1 through the central passage 16.
It is connected to 2. The central gas passage 16 is formed coaxially with the axis of the first four valve housing parts 12, and its opening 16' is formed in the shape of an inverted conical surface. Thus, the gas passage 14 on the inlet side is communicated with the gas passage 15 on the outlet side via the first valve housing 12 and the central gas passage 16.

Note that 17 is a gas pipe whose one end is connected to the gas passage 14 on the inlet side, and whose other end is connected to a gas supply source (not shown). Moreover, 18 is a gas pipe whose one end is connected to the gas passage 15 on the outlet side, and the other end is connected to the burner 3 of the water heater I described above.

Reference numeral 19 denotes a permanent magnet for driving a valve disposed in the first valve storage recess 12, which is formed into a substantially disk shape, and has a pair of engaging protrusions 20, 20 on its outer peripheral surface in opposite directions. It is protruded so as to extend to.

Therefore, the valve driving permanent magnet 19 has its protrusion 20.20.
By being engaged with the slits 13.13 of the first four valve storage parts 12, rotation is made impossible, and the valve is housed in a state in which it is freely movable in the front and rear directions within the first four valve storage parts 12. . On the rear surface of the valve driving permanent magnet 19 is a substantially shaft-shaped valve body 22 with an O-ring 21 externally fitted in the middle part.
is fixed. When the valve driving permanent magnet 19 is moved rearward, the O-ring 21 of the valve body 22 comes into pressure contact with the opening 16' of the central gas passage 16, and
This blocks the gas passage 14 on the inlet side and the gas passage 15 on the outlet side.

23 is a second portion formed on the rear end surface of the intermediate portion 7 of the housing 5;
The first four valve housing parts 12 are located at positions corresponding to the first four valve housing parts 12. Reference numeral 24 designates a valve operating permanent magnet rotatably disposed within the second valve storage section 23, and is formed into a substantially disk shape.

Note that 25 is a diaphragm sheet-like diaphragm disposed between the opening of the first four valve housing parts 12 and the second valve housing recess 23, and is attached to the front end surface of the base part 6 together with the rubber gasket 26 for sealing. and the rear end surface of the intermediate portion 7. Therefore, the valve driving permanent magnet 19 and the valve operating permanent magnet 2
4 and are arranged to face each other with a diaphragm 25 in between.

As shown in FIG. 2, the valve operating permanent magnet 24 is located at a position (hereinafter referred to as "
"Repulsion position." ), the valve driving permanent magnet 19 is moved rearward by the repulsive force of both permanent magnets 19 and 24. As a result, the valve body 22
closes the central gas passage 16 as described above. Further, as shown in FIG. 5, the valve operating permanent magnet 24 is located at a position where the magnetic poles at both ends thereof and the magnetic poles of the valve driving permanent magnet 19 are opposite to each other. When the permanent magnet 19 for driving the valve is rotated to the "attraction position", the permanent magnet 19 is moved forward by the attraction force of the two permanent magnets 19 and 24, and the permanent magnet 19 is moved forward through the diaphragm 25. and is attracted to the valve operating permanent magnet 24. As a result, the O-ring 21 of the valve body 22 separates from the opening 16' of the central gas passage 16.
opens.

Reference numeral 27 denotes a rotating shaft, whose rear end is rotatably supported by a bearing 28 provided in the intermediate portion 7 of the housing, and whose rear end is fixed to the valve operating permanent magnet 24. The front end of the rotating shaft 27 is connected to the housing 5.
It penetrates the front part 8 and the front cover 9 and projects forward, and a knob 29 is fixed to the projecting part.

Reference numeral 30 denotes a lock plate fixed to a substantially intermediate portion of the rotating shaft 27 in the axial direction by a fixing means such as screwing. A groove 31 is formed. One engagement hole 32 is formed in the lock disk 30 at the position where the groove 31 is formed. Note that 33 is a storage recess formed in the front part of the housing 5, and the lock disk 30 is arranged within this storage recess 33. Thus, the lock disk 30 is connected to the valve operating permanent magnet 24 via the rotating shaft 27.
It is rotated integrally with the In this embodiment, the engagement hole 32 formed in the lock disk 30 is positioned approximately to the left of the rotating shaft 27 when the valve operating permanent magnet 24 is in the repulsion position. .

34 is a piezoelectric unit, the case of which is the housing 5
It is integrally incorporated into the housing 5 by being embedded in the base portion 6 and intermediate portion 7 of the housing. 3
Reference numeral 5 denotes a piezoelectric element disposed inside the case of the piezoelectric unit 24, and electrodes 36a, 3 are provided on both end faces in the front and back direction.
6b, one electrode 36a is electrically connected to the burner 3 through a cord (not shown), and the other electrode 36b has its tip close to the burner 3 (also through a cord (not shown)). The ignition rod 37 is electrically connected to the ignition rod 37, which is located at the same time.

38 is a hammer shaft of the piezoelectric unit 34, the front end of which penetrates the side cover and protrudes forward, and the rear end of which is slidably supported inside the piezoelectric unit I.34. The hammer shaft 38 is connected to the piezoelectric unit 34.
It is always urged forward by a spring (not shown) provided inside the case, and when pushed against the urging force, it is rapidly moved toward the piezoelectric element 35 by an elastic means (not shown). The piezoelectric element 35 described above is thereby struck.

Reference numeral 39 denotes a push button, whose lower part is slidably supported by the side cover 10, and whose one side part abuts against the front surface 9 of the front cover to prevent it from being pulled out. Reference numeral 40 denotes a pressing protrusion formed inside the push button 39 so as to protrude rearward, and the rear end surface of the pressing protrusion 40 is in light contact with the front end surface of the above-described knob 38. As long as the push button 39 cannot be pressed rearward, it is held in the position shown in FIGS. 2 and 3 by the hammer shaft 38 of the piezoelectric unit 34.

41 is a lock pin, and the lock pin 41 has its middle portion slidably inserted into a through hole 42 formed in the front wall of the front portion 8 of the housing 5. This lock pin 41 is interlocked with the push button 39 described above. That is, 4
Reference numeral 3 denotes a link rod, which is rotatably supported by a fulcrum pin 44 protruding from the front cover 9 at a portion slightly closer to one end than the center. One end of the link rod 43 is rotatably connected to the front end of a connecting rod 45 whose rear end is fixed to the lock pin 41, and the other end of the link rod 43 is protruded from the front wall of the push button 38. It is rotatably connected to the protruding piece 46 that is formed. Thus, when the push button 39 is pushed rearward, the link rod 43 is rotated about the fulcrum pin 44, and the lock pin 41 is moved forward.

When the above-mentioned permanent magnet 24 for valve operation reaches a rotational position slightly different from the repulsion position, the lock pin 41
An engaging protrusion 41' formed at the rear portion is inserted into a retaining hole 32 formed in the lock disc 30, thereby locking the lock disc 30. In other words, the state in which the valve operating permanent magnet 24 is rotated to the repulsion position is maintained. The state in which the lock pin 41 locks the lock disk 30 is maintained by the push button 39, which is prevented from moving backward by the hammer shaft 38 of the piezoelectric unit 34. That is, when the push button 39 is in the position shown in FIG.

Therefore, from the state IE shown in FIG. 2, that is, the state in which the gas passage is closed, the push button 39 moves to the position shown in FIG. 5 (hereinafter referred to as
This position is called the "push position". ), gas is ejected from the burner 3 and the ejected gas is automatically ignited.

That is, when the push button 39 is pushed toward the push-in position, the link rod 43 is rotated clockwise from the state shown in FIG. 2, and the lock pin 41 is accordingly moved forward. Then, the engagement protrusion 41' of the lock pin 41
When the valve is removed from the engagement hole 32 of the lock disc 30, the valve operating permanent magnet 24 is simultaneously rotated to the attraction position. This is because, as described above, the lock pin 41 locks the lock disk 30 when the valve operating permanent magnet 24 comes to a position away from the repulsion position. Even though it is in a state of repulsion with the valve drive permanent magnet 19, it rotates to the attraction position and the valve drive permanent magnet 1
This is because it is biased to attract 9. Thus, the valve driving permanent magnet 19 is attracted to the valve operating permanent magnet 24, and the gas passage is opened. Thereby, the gas that has reached the gas passage 14 on the inlet side is supplied to the burner 3 through the path of the first valve housing recess 12 - the central gas passage 16 - the gas passage 15 on the outlet side - the pipe 18. And push button 39
When the piezoelectric element 35 is pushed into the push-in position, the hammer shaft 38 strikes the piezoelectric element 35 as described above. This causes a high voltage to be generated by the piezoelectric element 35, which voltage is applied between the tip of the ignition rod 37 and the burner 3, so that an arc discharge occurs therebetween. Thus, the gas ejected from the burner 3 is ignited.

Note that when the push button 39 is pushed in as described above, thereby opening the gas passage and igniting, the push button 39 is held substantially at the pushed position. That is, the push button 39 is pushed forward by the resilient force of the hammer shaft 38 to return to the front, but in this state, the engagement protrusion 41' of the lock pin 41 is pressed against the lock disc. Since it is in contact with the groove 31 of 30, the lock rod 43
cannot be rotated counterclockwise. Therefore, the push button 39 is held in the pushed-in position, and the lock pin 41 has its engagement protrusion 41' rear end surface pressed against the groove 31 of the lock disc 30.

To stop combustion by the burner 3, move the knob 29 approximately 18 degrees in the direction indicated by the two-dot chain arrow in FIG.
Just turn it 0 degrees. Then, the rotating shaft 27 rotates approximately 180 degrees again, so the valve operating permanent magnet 24 rotates to the repulsion position, thereby moving the valve operating permanent magnet 19 backward, and the permanent magnet 19 blocks the gas passage. be done. At the same time, the lock disk 30 is rotated and its engagement hole 3 is rotated.
2 comes to a position corresponding to the lock pin 41, so that the engaging protrusion 41' of the lock pin 41 is inserted into the retaining hole 32. Then, the push button 39 and the hammer shaft 38 return to the non-depressed position, and the engaging protrusion 41' of the lock pin 41 becomes engaged with the engaging hole 32 of the lock disc 30, thereby causing the rotating shaft 27 is locked, and the gas passage is closed by the valve body 22.

In the above embodiment, in order to rotate the valve operation permanent magnet 24 from the repulsion position to the attraction position, the valve operation permanent magnet 24 is locked in a compatible position from the repulsion position, thereby accumulating rotational force and locking the valve operation permanent magnet 24. By releasing the holder, the rotational force automatically rotates the holder to the suction position, but depending on the case, a torsion coil spring or the like may be used to rotate the holder. That is, a torsion coil spring is fitted onto the middle part of the rotating shaft 27,
One end thereof is engaged with the lock disc, and the other end is engaged with the housing 5. If you do this, the rotating shaft 27
When the valve operating permanent magnet 24 is rotated to the repulsive position, the locking disc 3 is attached to the torsion coil spring.
0, that is, an elastic force that attempts to rotate the rotating shaft 27 in the opposite direction is accumulated. Therefore, when the locking disk 30 is unlocked by the locking pin 41, the rotating shaft 2
7 is rotated more reliably by the elastic rotational force of the torsion coil spring.

Effects of the Invention As described above, the automatic ignition device for a gas combustor of the present invention comprises a valve for opening and closing a gas passage, and a piezoelectric ignition means for opening and closing the valve. The valve is characterized in that it is linked to an operating section and is activated when the valve is opened.

Therefore, according to the present invention, gas can be supplied and ignited to a portion of the /<-na by only one operation of operating the operating section so as to open the gas passage. Therefore, the operability can be improved.

Moreover, since the gas passage is always open when the piezoelectric ignition means is activated, the gas ejected from a portion of the burner is reliably ignited.

Therefore, there is no need to worry about ignition errors or gas leaks, and safety is improved.

6 According to the present invention, it is possible to provide a novel automatic ignition device for a gas combustor that is excellent in operability and safety.

In the above-mentioned embodiment, the gas passage is opened and the piezoelectric ignition means is activated by pressing the push button, but by doing so, the operation for igniting is extremely simplified. , further improves operability.

Furthermore, in the embodiment described above, the valve that opens and closes the gas passage was driven using magnetic force control means that utilizes the repulsive force and attraction force of the magnet. The open or closed state is reliably maintained, and the valve opens and closes smoothly. On top of that,
The operator does not need any force to open the valve.

In the above embodiments, the automatic ignition device for a gas combustor of the present invention was applied as an automatic ignition device for a water heater, but the present invention is not limited to this, and is applicable to gas ranges, gas stoves, bathtubs, etc. It can also be widely applied to automatic ignition devices used in household gas combustors such as pots or gas combustors for various industrial machines.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the automatic ignition system for a gas combustor according to the present invention.
The figure is a cross-sectional view taken along line A-A in Figure 1, Figure 3 is a cross-sectional view taken along line B-B in Figure 2, and Figure 4 is an exploded perspective view of the main parts of the automatic ignition system. FIG. 5 is a sectional view taken along line A--A in FIG. 1 in a state where the ignition operation is performed. Explanation of symbols No. 1: Gas combustor, 3: Part of burner, 4: φ automatic ignition device, 14.15.16: Gas passage, 22: Valve, 29, φ, operation part , 34...Piezoelectric ignition means, 39...For operating section Applicant Seiji Kagawa 9 Figure 1

Claims (1)

[Claims] It consists of a valve for opening and closing the gas passage, and a piezoelectric ignition means for opening and closing the valve, and the piezoelectric ignition means is interlocked with the operation section and is activated when the valve is opened. Automatic ignition device for gas combustor characterized by