DE1629860B1 - Stopcock with temperature control device for gas-heated ovens equipped with a main burner and a grill burner - Google Patents

Description

1 2

The invention relates to a shut-off valve with an end of a do a stationary with the housing temperature control apparatus for gas-heated, with Ί · a bolts at "rotatably mounted slides excluded ¹ Db'ppelhebels a main burner and a grill burner, wherein the other end of the lever under the control Upgraded ovens , with a nut of the calibration spindle that rotates the plug as a carrier of the control pot, one engages through a central bore 5, and that a rod guided to the slot is then guided by a rod of the plug to operate a shaped end-face valve that closes the gas inlet opening, which slopes down to a stop, the curve is provided on which the lever arm for regulating the opening position is held in the spindle with an electromagnet operated by a three thermocouple following the rotary knob in the vicinity of the flame, and with a temperature of the oven burner that is at io, Where at the rear of the spindle, when the cam is rotated in the middle of the detent when turning in the disengaging direction, the highest part of the cam track is linked via an intermediate spindle to the adjusting nut of the control pot and continues thermostatically up to a stop for the grill burner controlled, to the oven burning sets.

leading, parallel to the chick axis in the same ge 15 In a preferred embodiment, the

housing associated control valve acts. Cam disk above the cam track and the

In a well-known version, the EiH; The stops on the face are diametrically opposite

adjusting spindle already provided a cam disk, lowing projections, which in an end face

So in which the circumference increases in diameter and engage the chick slot with play. The setting

The calibration spindle also uses a longitudinally displaceable control pin against the nut to prevent

a conical peripheral surface of a nut acts, changing its rotation on its underside a

the one on the calibration spindle of the control head of a ther- radial recess for the engagement of the end of the

mostatically controlled gas outlet valve to the main lever arm. ^: - ■ '■

burner is arranged towards. In the drawing, the subject of the invention is missing.

Change of an over-switching possibility (overturning lock) 35 training on a schematic embodiment

explained contrary to the previous position.

sat down Brenner. In addition, this solution has the Fig. 1 shows the adjustable in an upright section

Disadvantage that the longitudinally displaceable control pin gas shut-off valve, ■ ■ "7

on the rising circumferential surface of the cam and Fi g. 2 the top view of the adjusting knob,.-_.-.

also the mother rubs heavily in each case, so that 30 Fig. 3 and 4, the cam disk in a view from below

Significant wear and tear over time and side view,

Abrasion occurs, which then no longer functions.

guaranteed. Experience has shown that the, Ge F i g. 6 and 7 two different switch positions

drive that the chick comes out of the conical seat of the cam disk according to "grill" and "eq" the is raised upwards, - whereby the seal ^ .s5-Fig. 2;

effect is no longer guaranteed. The tap housing 1 has a gas inlet socket corresponding to the basic positions »1 to 8« of the zen V, an outlet connection V> to the oven knob of the setting spindle on each baking pre-burner and an outlet connection IP to the grijjbrengang, if necessary, moved back and forth several times . In the conical bore l ^{d of} the housing 1, the pressure of the control pin 40 lies the chick 2, whose upper end has a front slit 2 ^a running metrically against the inclined circumferential surface of the calibration nut, not as favorable for the service life one sOlch'en .- :. The chick 2 takes to be viewed in its central bore 2 ^b expensive control device. one at its front end with a 3 ° head

In contrast to this, the invention is based on the task of the pin 3, which by a coil spring 4 supported on the Kügrunde to design the control valve in such a way, 45 ken 2 against the lower that the rotary knob of the setting spindle in the "zero end of the Rotary knob 5 ^α bearing setting spin position «is locked, the temperature setting is pushed to del 5. An upper chamber-like GeWahl by turning to the right or left on the häuseausnehmung l ^e is a Gehäusedek control valve for the oven burner or the Frel · -, kel V sealed, the collar-like projection l ^g were leading to the grill burner Leitung'erst 50 the adjusting spindle 5 is axially displaceable and rotatable after performing a longitudinal displacement of the bar. The lid V of the housing 1 has, on setting spindle by pressure on the knob its inside can be a diametrically extending internally performed, wherein in the Rückdre- side latching ^h l for the storage, a-also hung the adjusting knob in the "zero-position" in diametrically extending transverse pin l · 'preferably in each case an overturn lock with regard to it - "' 55 has a rectangular cross-section in the position" 0 ". That takes place for a while as a result of the still effective A rotation of the rotary knob 5 ^a can therefore only seed thermal power delivery made to the electromagnetic, when the setting spindle 5, 5 ° tables in the direction of inlet valve at that unburned gas to be against the spring 4 verschodem other burner and therefore remain in the baking oven in the chick 2 back and the transverse pin V ^ft the Rastl Dekraum of passes, whereby the dough advertising spoiled 60 kels V has left. At the lower end of the can unities. adjusting spindle 5 is a cam Scheib e 6 axially adjustable

According to the invention, this task is thereby arranged bar, the upper face of which is on the

solved that the adjusting spindle is supported with a cross pin rear wall of the housing cover V and one

partly in an inside detent of the housing part, diametrically extending and axially continuous

partly in a diametrically running slot a 65 slot 6 ° for the transverse

the spindle against rotation, but detachably attached pin 1 ', so that the cam 6, 6 ^α through

The cam disc is located on its transverse pin V which pulls the plug when the setting spindle 5 is turned in

turned side has a detent in which the one in both directions is taken. The cam

Disk 6 also carries a rising ring-shaped curved track 6 *, at the highest point of which a detent 6 ^c for the double lever 7, 7 ° (Fig..7) and a protruding stop 6 ^d "grill" (Fig. 6) is provided , which is followed by a stop 6 ^e »oven« at the lowest point of the cam track &. The slot 6 "is an extension of the central opening ^6!, And allows for an axial adjustment of the adjusting spindle 5, the movement of the transverse pin V in it. On the lower face of the cam 6 are also two diametrically opposite projections 6 ^S provided in . Der.Querstift and V-die.Verbindungslinie of the projections 6 ⁸ cross at 90 °, therefore, the cam 6 acts as a cross = - joint and eliminates jamming during rotation, the slot ^2a of the plug 2 to penetrate for the purpose of its rotary driving ·. ^: the setting shaft 5, 5 ^a , which can result from a slight deviation of the axes of the plug 2 and the setting shaft 5 when the temperature increases in the housing 1. On the lower cam track &> of the cam disk 6 is one lever arm l ^a ■ a double lever 7, while the other lever arm 7 ⁶ engages in a radial recess 8 ^{a of} an adjusting nut 8, in which one verla on an axially parallel to the adjusting shaft 5 ufende, provided with external thread calibration spindle 9 is rotatable, which is used for presetting (calibration) of the thermostatically controlled control valve leading to the oven burner.

The front end of the calibration spindle 9 is provided with an adjustment slot 9 ^a for engagement of a screwdriver, whereby the calibration of the device can be carried out easily. The calibration spindle 9 is guided in a bore l ^{k of} the housing 1 and is under the action of a compression coil spring 10 that surrounds it and compensates for excess pressure also axially adjustable, on both sides of which openings 11 ^{& are provided} for gas admission. At the lower end of the control pot 11 has a valve ring ll ^c, its position in the lower chamber V through Verfe rotation of the spindle 9 against the calibration Stellmut- ter ^ 8 can be adjusted for calibration. A bellows 12 is arranged opposite the valve ring 11 ^c , which carries a shut-off plate 12 ° with a sealing ^{washer 12 6} and is connected to the temperature sensor 14 by a pressure line. So that the flame of the oven burner does not go out when the valve 11, 11 ^{c is} shut off, the lower chamber V is connected to the gas space 1 ^m by a bypass nozzle 15. In the housing 1 there is a further chamber 1 ″ below the plug 2 at the inlet connection 1 °, in which the gas inlet barrier is housed, which responds after the flame of the oven burner has gone out; because the thermoelectrically influenced valve 16, here with an I-shaped cross-section, is located ^b under the pressure of the Stegl6 ^a surrounding coil spring 16, the armature plate faces 16 ^C an electromagnet 17 which is energized by a thermocouple 18th

To set a desired temperature of the gas flame of the oven burner, the setting spindle 5, 5 ^{a is moved} in the direction of the arrow towards the plug 2 and then rotated so that the corresponding cross hole of the plug 2 directs the gas to the burner of the oven or grill. When turning the rotary knob 5 ° to a value in the group of numbers "1 to 8", the control pot 11 is set to the desired height using the double lever 7. If the greatest height "8" is slightly exceeded, further rotation is prevented by the detent 6 ^{e of} the cam disk 6 because the double lever 7, 7 ^a penetrates into it (position "0"). If the cam disk 6 is to be rotated further in the same direction into the "grill" position until the cross-section V is stopped by its stop 6 ^ä , the setting spindle 5, 5 "must first be pushed in again to move the double lever 7 To lift 7 ° out of the detent 6 ^{C of} the cam disk 6 by means of the transverse pin V. The gas flow now runs to the grill burner. When rotated in the opposite direction, the double lever 7 on the cam track 6 ^{a reaches} the stop 6 ^e , which corresponds to the lowest " Corresponds to the temperature value on the setting scale.

It can be seen that in order to switch on the control valve on one of the two burners of the oven, the setting spindle 5, 5 ^a must first be moved inward from the detent position, whereupon the user can freely decide whether to switch the control valve to the oven burner or to the Wants to switch on the grill burner. If, in any case, the rotation has taken place in one of the two directions, switching back beyond the zero position is impossible, even if the indentation movement is maintained. If you switch back from the grill position and keep the impression movement upright, the free end of the cross pin V strikes the end 7 ^{a of} the double lever 7 and prevents further rotation. If you let go of the rotary knob 5 "because the rotation cannot be continued anyway, the lever arm 7 ° of the double lever 7 automatically engages in the detent 6 again. Exactly the same process occurs when you press or release the oven burner the rotary knob 5 ^{a moved} back to the zero position.

Claims (3)

Patent claims: 1. Shut-off valve with temperature control device for gas-heated ovens equipped with a main burner and a grill burner, with a spindle that rotates the plug, a rod guided through a central hole in the plug to operate a valve closing the gas inlet opening, which is controlled by a thermocouple attached near the flame operated electromagnet is held in the open position, as well as with a cam disk attached to the spindle, entrained when it is rotated, which acts via an intermediate member on the adjusting nut of the control pot of a thermostatically controlled control valve, which leads to the oven burner and is arranged parallel to the plug axis in the same housing, characterized that the setting spindle (5) with a transverse pin (1 ') partly in an inside detent ( l ^h ) of the housing cover (10, partly in a diametrically extending slot (6 ^a ) one on the spindle (5) secured against rotation, but detachable igen cam disc (6) is located, which on its side facing the chick (2) has a detent (6 ^C ) in which one end (7 ^a ) of a double lever (7, 7 °, 7 ⁶ ) which is mounted in the housing (I ₃ l ^e ) and can be rotated in a stationary manner about a bolt (7 ^C ) slides, the other end of the lever (7 ⁶ ) under the adjusting nut (8) of the calibration spindle (9) as a carrier of the control pot (11) engages, and that an annular end-face curve (6 ^& ) which slopes down to a stop (6 ^e ) ^{is provided next to the slot (6 C) , on which the lever arm (7 ß} ) slides to regulate the temperature of the oven burner with a rotation of the spindle (5, IQ) following the unlatching pressure on the rotary knob (5 °) ^{, whereby behind the detent (6 C} ) the Spindle (5, 1 ') the highest part of the cam track (6 ⁶ ) continues up to a stop (6Ό for the grill burner. 2. Stopcock according to claim 1, characterized in that - the cam disc (6) above the cam track (6 ⁶ ) and the stops (6 ^d , 6 ^e ) on the end face .diametrally opposite projections (6 ^S ) , which in a engage front-side slot (2 ^a ) of the plug (2) with play. 3. Stopcock according to claim 1, characterized in that the adjusting nut (8) to prevent its rotation on its underside has a radial recess (8 ^a ) for the engagement of the end of the lever arm (7 ^δ ). 1 sheet of drawings