DE2114964C3 - Control device for fuel gas-air mixtures - Google Patents

Description

ϊ 14

Slide 7 equipped so that corresponding parts are provided with the same reference numerals. The housing front wall 4 has an opening 21 ′ with an internal thread, which is formed by a cover screw 24 can be locked.

With the adjusting screws 19, the plates 17 are set in the two rotary valves 1 and 8 when the entire system is retracted so that in each

Position of the Einsieügiiffi · 12, c the fuel gas-air mixture remains.

The rotary valve 7, 8 are i chambers 1, 2 in conventional The plates 17 have gescl surfaces, so that the same lying on top of each other.

1 sheet of drawings

Claims (3)

let the respective settings for the individual plates be determined exactly when the system equipped with the control device is retracted. For easy adjustability of the respective diameter 1. Control device for fuel gas-air passage cross-section, each plate can be held in a cover plate with a control mixer with axially aligned one behind the other.
In addition, the adjusting screws of each rotary valve for fuel gas and air, the valve on an arc of a circle around the axis of the rectangular adjusting shaft can be arranged transversely to the direction of the adjusting shaft axis and can adjoin the end walls of the adjusting shaft in the associated end wall of the adjusting shaft an opening can be provided, have zende passage openings and through each of which an adjusting screw is accessible. each of which has an end wall in the direction of the This training ensures that the uniaxial of the control shaft is adjustable, characterized in that each adjustable cross-section in a test run only adjusts the new end wall (15) from adjacent plates 15 coming into effect can be. (17), which is perpendicular to the tendon (16 ') of the In the drawing, an embodiment of the respective passage opening (! 6) is shown and the subject of the invention is shown, namely shows
are individually movable. Fig. 1 shows a control device in a total 2. Control device according to claim 1, sees characterized in that each plate (17) with 20 Fig. 2 is a section along the line ΙΙ-ΙΓ in an adjusting screw (19) in a cover plate Fig. 1, (18) is held. 3 shows a section along the line IU-III in 3. Control device according to claim 2, there- Fig. 1, characterized in that the adjusting screws F i g. 4 is a view in the direction of arrow IV in FIG (19) of each rotary valve (7, 8) on a circle 25 Fig. 1. arcs arranged around the axis of the adjusting shaft. The control device has two slides and that in the associated housing end chambers t and 2 for air and fuel gas, the wall (3, 4) has an opening (21, 21 '), have a cylindrical cross-section and each through the one adjusting screw (19) access- a housing end wall 3 or 4 is completed and borrowed. 30 equipped with two connection flanges 5 and 6 respectively are. Inside each slide chamber 1 and 2 respectively a rotary valve 7 or 8 is arranged. On everyone Rotary valve 7, 8 sits a section 9 of an adjusting 35 wave. The sections 9 are connected by a coupling 10 connected with each other. Another section 11 The invention relates to a control device for the actuating shaft is led out through the housing end wall 3 fuel gas-air mixtures with coaxially aligned one behind the other and carries an adjusting handle 12 Air, 4 »end walls 13, 15, between which two rectangular walls 14 are arranged adjacent to each other, facing transversely to the direction of the axis and running parallel to the control shaft axis from the control shaft, so that they have passage openings and in which a rectangular passage opening 16 is in each case an end wall in the direction of the axis of the rotary valve 7 is present. The end wall 15 adjusting shaft is adjustable. 45 consists in an area of the passage opening 16. Such a control device is made up of numerous individual plates 17, which are known with their German utility model 1,926,304. In the case of plate surfaces lying close to one another and the width of the known control device result, the passage opening 16 is largely filled. The plates 17 lent fluctuations in the mixing ratio of run perpendicular to the chord 16 'of the passage fuel gas and air as a result of the opening 16 when the load changes, cf. fixed, the flow values on the inside of the gas or on the air side. half of the cover plate 18 rotatable, but the axial object of the invention is to provide a direction that are immovable. Each adjusting screw 19 control device of the type specified at the outset, which has a threaded shaft which engages the fuel gas-air mixture ratio within the 55 20 of the plates 17 in the adjusting thread. The adjusting screws 19 keep the entire control range almost constant. consequently act as screw spindles, so that this object is achieved according to the invention by rotating an adjusting screw 19 which is achieved with the same that each adjustable end wall consists of connected plate 17 in the direction of the adjusting shaft adjacent plates, which is displaced perpendicular to the axis. The adjusting screws 19 are chords of the respective passage opening 60 according to FIG. 3 are rotatable and individually displaceable on an arc of a circle. arranged slide axis. The housing end wall 3 which can be achieved by such a design has an opening 21 through which the corresponding technical progress consists in that a subdivision of the adjustable end walls into individual adjusting screws 19 is accessible through the adjustment of the adjustment handle 12. According to Fig. 4, a profiling of the cross 65 of the adjusting handle 12 is coupled to a pointer 22, the opening of each rotary slide which shows on a scale 23 the number of the adjusting screw 19, which is accessible on the load-dependent side, according to the sliding plates,
changing flow values is possible, whereby the rotary valve 8 is just like the rotary