DE7005348U - GAS FITTING WITH A THERMOELECTRIC IGNITION DEVICE. - Google Patents

Description

Junkers 517

? Li-pu /? I

February 15, 1970

JU "ή KERS. & CO. GJVLBH. In Wernau / Neckar

Gas valve with a therino-electric ignition safety device

The invention relates to a gas fitting with a thermoelectric Ignition safety device and a built-on piezoelectric ignition device, which by the rotatable and push-in operating handle of the gas valve can be actuated, through the switching rod of which both a releasing at least the ignition gas Valve as well as a main gas valve designed as a plate valve or plug cock can be controlled, and that when the operating handle is turned from the off position into the ignition position at the same time the piezoelectric ignition device can be actuated, which one Ambcss, at least one inserted into a fitting body Piezo crystal, a firing pin and a hammer acted upon by a striker spring, which when the Operating handle can be released via a driver and driver spring Coupling formed is movable in the tensioning direction of the mainspring, so that after releasing the coupling of the hammer on the Firing pin strikes.

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Junkers 517

Such a gas valve with a thermoelectric ignition fuse device and a built-on piezoelectric igniter is already known for a gas-fired water heater. Y / hen the gas-heated device is taken into operation and to it If the gas supply to the burner of the device is to be released, the pilot flame on the pilot burner must first be ignited. to For this purpose, the operating handle of the gas valve is first brought from the off position to the ignition division, in other words Ignition gas valve is opened and the ignition flame is to be ignited by means of a simultaneously actuated piezoelectric ignition device. The actuation of the piezoelectric igniter to generate the piezoelectric energy for the ignition spark takes place in the known execution of a combination of a gas valve with a piezoelectric ignition device held at the point in time in which the gas valve reaches the ignition position. Las igniting the There may be no pilot flame if the ignition spark is generated, even before the pilot gas line to the pilot burner has been vented and no pilot gas has yet escaped from the pilot burner. With the usual Executions are expensive cash measures required to the rollover to delay the ignition spark by a period of time during which the ignition gas supply line can be vented and grounded.

The invention is based on the object with simple smocks and with little effort to remedy the specified inadequacy.

The object is achieved in a gas fitting of the type mentioned at the outset according to the invention in that one of the two / coupling members is provided with a feeling notch, which softens the turning movement shortly before the end of the tensioning process of the mainspring of the operating handle is delayed before the coupling between the driver and the kit-taking spring is achieved by further turning the operating handle is solvable.

For this purpose, the training in the V ^.; It is also possible that the nose of the hammer's hit spring with a transverse

ο u-i / cers 517

i-tastriiie is designed as a feeling notch, in which the driver with a snow shortly before the end of the clamping process a.

In a preferred embodiment it is provided that cass dem formed on the operating handle as a radially protruding approach Kitnehi..er in Spannrichtur.g a stepped paragraph like this upstream is that between this and dec driver a Locking groove is formed as a feeling lock, in v / oak the hook-shaped Bent l.'ase of the driving fecer shortly before the end of the clamping process intervenes.

The, training of a gas valve with an attached piezoelectric Ignition device according to the invention ensures that the ignition spark is only generated after the ignition gas line has been vented and the ignition gas flowing out of the auxiliary burner is ignited for safety will. The simple cash taking according to the invention makes this Loosen the coupling between the operating handle and the Hamiaer moved in the direction of tension of the impact spring at the end of the tensioning process delayed by a feeling notch until the ignition gas line to the pilot burner is vented and at the moment of Flashover of the ignition spark on the pilot burner actually ignition gas' emanates. There is no need to repeat the ignition process usually.

The object of the invention is based on two in the drawing schematically illustrated embodiments explained in more detail.

Show it:

? ig. 1 is a view of the partially broken operating handle of the gas fitting in the off position with the attached piezoelectric igniter;

2 shows a view according to Pig. 1, but in the position the feeling notch shortly before reaching the ignition position.

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3 shows a broken and partially broken away View of another execution form in the Exhibition;

Pig. 4 a view of Pigur 3, but shortly before Reaching the ignition position;

Pig. 5 shows a path-time diagram of the actuation process of the ignition device.

In Pig. 1 to 4 of the drawing, only the operating handle 10 of the gas valve of a gas-heated water heater known per se is shown, on the visible side of the operating handle 10, the off position of the gas valve is represented by a simple circle, the ignition position by a filled triangle and the one from the Drawing not recognizable open position is marked. The operating handle 10 has a handle neck 101, which is also known per se, which is provided with a control link or a control curve for the sequence of movements when operating the gas valve and with a driver 102 for operating a piezoelectric ignition device. The remaining parts of the gas valve and the water heater are not the subject of the invention and are not shown in the drawing. From the-Gasariaatur of the water heater is made in a known manner to ^c .eh both the gas supply to the pilot burner as well as for; Ha-apt burner controlled by the water heater. The gas arara is generally with a thermoelectric]! Zündsicherungsvorrichtung and designed as a poppet valve or plug valve haup tgasventil provided. In a likewise known manner, a spark gap is assigned to the pilot burner, to which energy is supplied from a piezoelectric ignition device which is attached to the gas valve. Such a piezoelectric, generally designated by the reference numeral 11

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Junkers 517

Ignition device also consists of a known manner Anvil 12, at least one in egg: .cr. ?. Ssungskörper 13 inserted Ρ1βεοβ1ε: τεηΐ, a firing pin 14 and a through one Striker spring 15 acted on chamber 16. The hammer 16 is on arranged at one end of a pivotable angle lever 7, the pivot axis of which passes through the other end of the angle lever 17 a pivot pin I9 attached to the holder 18 is formed. The Kalter 18 is provided with two angled tabs 181 and 182, of which the tab 181 is used to hold the piezoelectric Ignition device 11 and the other flap 182 for fastening the ignition device 11 to the gas valve and as a retainer the striker spring 15 is formed. The V.'inkelhebei 17 forms the pivot lever of the hammer 16 and is with its short lever arm mounted pivotably on the pivot pin 19, on which a torsion spring is pushed as a striker spring 15. With the Hammer 16 is a leaf spring as a driving spring 20 connected unc angled. One leg 201 of the Kitnahmefeder 20 is between the hammer 16 and the free end of the Swivel lever 17 attached, while the other leg 202 is provided at its free end with a bent nose 203 ', which in the area of the driver 102 on the handle neck 101 of the operating handle 10 protrudes. The driving spring 20 is a corresponding shaped support bracket 21 assigned, soft the same Υ; inkeiform as the ^ itnahmefeder 20 has. One thigh 211 of the support bracket 21 is between the Kitnahmefeder 20 and the Pivoting lever 17 arranged, while the other leg 212 rests against the kit-taking spring 20 and is dimensioned in its length so that that the nose 203 of the kit receiving spring 20 remains free. When pressing the control handle 10 counterclockwise becomes the hammer pivoted by the interaction of the driver 102 on the handle shark 101 and the kit-taking spring 20. After moving the hammer 16 Over a certain distance while tensioning the mainspring 15, the coupling between the for tensioning the Striker spring 15 attacking force and the chamber 16 released,

• Ill Il

Junkers 517

so that the latter strikes the firing pin 14, whereby piezoelectric energy is generated, which is conducted to the spark gap via the line connected to the attachment 13I of the fitting body 15, se that he jumpers, from sparks that in the ignition position of the gas assembly from the ignition burner escaping GaS ⁷ ZUE ignition is brought. When the gas valve is moved from the off position to the ignition position, a non-illustrated gas valve is actuated, and the ignition position releases the gas supply to the pilot burner, the gas supply line to the pilot burner requiring ventilation before the pilot flame is ignited.

GcrriäoS of the invention is one of the two coupling members and the Xase 203 of the driver spring 20 or the driver 102 ar. Handle neck 101 of the operating handle 10 with a feeling latch provided which, shortly before the end of the tensioning process of the mainspring 15, delays the twisting movement of the operating handle 10, before by further turning the control handle 10 the coupling between the driver 102 and the Kitnahdefeder 20 releasable is.

The ITase is in the one embodiment κ gerr.üss Eigur 1 and 2 203 the I'.itnah ^ efeäer 20 of the hammer Ic with a transverse ^ astriiie 204 designed as an emotional detent into which the Driver 102 with a cutting edge 103 shortly before the end of the clamping process engages and the twisting movement of the operating handle 10 delayed in the ignition division.

With c.or other .vasführur.gsform according to? Igur 3 and 4, dea is 3edio - '. Ur. _{In the} tensioning direction, a step-shaped shoulder 104 is positioned in front of the handle 10 as a radially protruding approach, in such a way that between this and the driver 102, a r.aatrilie IG ^ is formed as a feeling notch, into which the hook-shaped bent lase 203 of the pick-up spring 20 shortly before Ln ^ e

Junkers 517

dc-s clamping process engages and the twisting movement of the operating handle it 10 is delayed in the ignition position.

It "" works as follows:

If the off position of the operating handle 10 shown in FIG. 1 is assumed, in which the gas-heated water heater is not in operation, the gas valve is operated by turning the operating handle 10 generally counterclockwise from the off position indicated by the open circle -Position in the Z and division marked by the filled triangle. This twisting power of the operating handle it with the operating handle 10, the i \ to the handle neck 101 10 Inappropriate driver 102, soft immediately after the start of the rotational ^movement: entrains ase 203, the Kiitnahmef Eder 20 of the hammer 16 of the piezoelectric ignitor. 11 This movement of the kit-taking spring 20 takes place without resilient evasion of the same, ^ .a the support bracket 21 forms a rigid contact with the kit-taking spring 20. As a result of the movement of the driver spring 20, the V / angle lever 17 and thus the hammer Io are pivoted in the opposite direction, whereby the mainspring 15 is tensioned. Shortly before the end of the tensioning process of the mainspring 15 "and before reaching the firing division of the operating handle 10 marked by the filled triangle, the cutting edge 105 of the driver 102 engages in the locking groove 204 of the kit-taking spring 20 as a feeler catch (see Pig. 2), so that the twisting movement of the operating handle 10 is delayed in the ignition pitch, since an additional force must be applied in order to: overcome the emotional lock when twisting the 3-radius handle 10 can be seen, the locking of the cutting edge 103 of the I-iitnehraers 102 in the locking groove 204 of the driving spring 20 causes a delay in the course of the movement of the operating handle 10, which ensures venting of the ignition gas line before the ignition spark flashes, since the ignition gas valve the twisting movement of the operating handle 10

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before reaching the ignition position in its offer position got. After overcoming the Y / resistance of the filling notch reaches the kit receiving spring 20 and thus the pivot lever 17 is seated the hammer 16 attached to it its furthest swiveled-out position and at the moment in which the cutting edge 105 of the driver - 102 on the handle shark 101 of the operating handle 10 the hasty groove 204 of the drive spring 20 leaves the coupling between the force acting on the chamber 16 and the hammer 16 is released and that during the pivoting of the pivot lever 17 tensioned mainspring 15 can be saved with their Peder energy act on the pivot lever 17 and thus on the hammer 16. The hammer 16 schlägx under the action of the mainspring 15 on the firing pin 14. The piezoelectric energy generated by the impact of the hammer 16 is via the Approach 131 and an outgoing KochsprmiLAgskabel to Ignition spark gap derived from the pilot burner of the V / a gas heater. The ignition sparks ignite the gas escaping from the ignition burner. A misfire, i.e. before ignition gas flows out of the pilot burner, v / is avoided because during the delay of the movement of the operating handle 10 from the off-axis to the ignition position Ignition gas line is vented and ignition gas normally escapes at the moment of spark formation.

In the second embodiment according to FIGS. 3 and 4 it runs the actuation of the gas valve from the off position to the ignition position and ignition as described. When turning the operating handle 10 engages the nose 203 of the driver spring 20 in the Hastriile 105 of the driver 102 as a feeling notch shortly before End of the tensioning process of the mainspring 15 and before it is reached the ignition position and causes the ventilation of the Ignition gas line required delay in the course of the movement of the operating handle 10 from the off position to the ignition position.

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In both cases it ":

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θ 111 .-- üIe.V.2 of the LG

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service handle 10

us the Aus-Steliunir in the Zündteilunn;

according to aea shown in Figure 5: Path-time-Dia ^ rra. ^^. Of the from the off position indicated by the open circle, the movement initially runs uniformly according to line 22 ice to Ratchet of the emotional speed. Point 23 »From the.: ;;:;. Point off if the movement is delayed along line 24 until; Point 25, so that during this period the ent

ventilate the ignition gas line

: tt can find. Vo ^ point

the movement according to line 2c will be rapid until it is reached the ignition position indicated by the filled triangle, in which the ignition takes place.

The arrangement of a feeling notch can be done with all gas fittings with a piezoelectric ignition device, regardless of whether they are provided with a gas valve designed as a poppet valve or a plug valve. It plays again It does not matter whether the piezoelectric ignition device is either a rotary or a crank actuation to tension the mainspring aux points. Auen is the order of the Geiun_sraste to Gasarma- Doors with piezoelectric ignition device possible, do not calibrate to a water heater as in the described embodiment assigned.

5348 -

Claims (2)

~ ⁱ⁰ ~ Junkers 517 back . Gas arrnatur sit a thersoelectric ignition safety device and an attached piezoelectric igniter, which is driven by the rotatable and retractable Operating handle of the gas instrumentation can be operated by the Holding rod as well as a releasing at least the ignition gas Valve as well as a poppet valve or plug cock designed as Eaupxgasvenxii can be controlled, and that when twisted the operating handle from the off position into the ignition position at the same time the piezoelectric ignition device can be actuated, soft one .-. Ziboss, at least one in a piezo crystal inserted into the socket, a firing pin and a hammer operated by a shock feaer aufv / eist, v / elcher leg: turn the operating handle over a detachable coupling formed by Hitnehicer and Kitnahnefeder can be moved in the tensioning direction of the mainspring so that after loosening the coupling, the haider strikes the firing pin, characterized, that one of the two Xoppiungsglieder with a G-sensing notch strand ibt, soft shortly before the end of the tensioning process aer striker spring (15) the turning movement of the operating handle it (10) is delayed before turning the control handle further (10) the coupling between the: Iitnehser (102) and the driving spring (20) is releasable. 2. Gas system according to claim 1, characterized in that the nose (203) of the hot-close spring (20) des I-Ia ::. "iers (16) ~ it is a transverse Sastrille (204) is designed as a C-sensor catch, in which the I-iitnehijer (Ί G 2) r. With a cutting edge (103) shortly before and ε of the clamping process intervenes. - 11 - ~ Jvjikere 517 Gas fitting according to claim 1, characterized in that ge k e η η, that the driver (102) formed as a radially protruding projection on the operating handle (10) in the opannrichtung a step-shaped shoulder (104) is upstream in such a way that a locking groove between this and the driver (102) (105) is formed as a feeling notch, in which the hook-shaped bent nose (203) of the driving spring (20) is short intervenes before the end * of the clamping process. 7005848