DE2064899C - Control device for a reciprocating piston engine which is flush with a gaseous flow medium. Separated from 2015472 - Google Patents

Description

gan forming, be soiled in the area of the constriction.

slidably mounted sleeve (26), which is so long it is known to push piston engines by control

is that in one end position you can actuate the opening of the 35 valve located on the side of the working cylinder

first angled bore (24) closes and the öff- attached and their supply lines in corresponding

tion of the second angular bore (25) releases, way with the cylinder chambers below and

while r-ie in the other end position the öff- are connected above the working piston. One

tion of the second angular bore (25) includes such an arrangement describes z. B. the German and the opening of the first angular bore (24) 40 patent specification 557 584. The valve is in the form of a

releases. Running four-way slide valve, in which the

2. Control device according to claim 1, characterized in that the slide in one end position is the left side of the piston characterized in that the control slide (27) and with the pressure source and the right side of the piston with Sleeve (2 * 6) have the same axial length. the outlet into a low pressure area, for example

3. Control device according to one of the instructions into the atmosphere, connects and in the other statements 1 or 2, characterized in that ren end position the right piston side with the Druckder Control slide (27) with a recess source and the left side of the piston with the outlet (28) is provided, in which a circumferential flange (29) binds, so that the working piston accordingly in the the sleeve (26) engages. one and the other end position. The one as a piston

4. Control device according to one of the at 50 formed slide of the valve but would speak 1 to 3, characterized in that the actuated that a piston surface by means of a hand control piston (14) of the main control valve (6) from the control valve is pressurized and the other is connected to a cylindrical core (21) and two ring-shaped with the low-pressure atmosphere,
The reversal of this known device core (21) and pushed through in corresponding 55 but takes place so slowly that the working piston corresponding holes engaging transverse pins (19, 20) in the longer time both end positions are secured, the angled bores (24, waiting.

25) is formed in the core (21) and its design According to German Auslegeschriften 1 230 263,

The openings in the edge area of the 1 249 594 and 1 262 680 are therefore still facing End faces of the heads (17 and 18) 60 know, the reversal of the working piston is formed from it are. one into the other end position by himself

5. To have the control device run according to one of the above. There are also statements at the end of each 1 to 4, characterized in that tappet valves are provided in the cylinder chambers, which at least one circumferential groove of the heads (17 and crossed with the two cylinder chambers) a sealing ring (16, 15) is inserted. 65 den that above and below the control valve slide are formed. In the two end positions of the working piston, this controls the valve tappet in each case so that this him on the way in

sends its other end position. In order to achieve that the switching of the main control valve and thus the reversal of the working piston in its respective end position happens suddenly, is the main control valve provided with an auxiliary control element, which either consists of a double-sided ball valve or consists of a flap valve. This auxiliary control organ responds very quickly when reversing and causes additional loading of the relevant piston surface of the main control valve tappet, see above that its movement into the other position is significantly accelerated when reversing.

However, this working principle and the means necessary for its technical application have Disadvantage. As stated, they have to be very light in order to enable extremely short switching times. But this also means that they are extremely sensitive to a change in viscosity Lubricant residues, but above all against one unavoidable contamination of the same during operation. This is mainly due to the fact that these auxiliary control organs, So both the ball and the valve flap, the valve opening in their direction of movement open and close.

The invention is based on the object, in such a control device, eicis thrust piston motor to make the auxiliary control member so that it is against dirt and lubricant thickening is insensitive and improves the working principle compared to these known designs will.

This object is achieved according to the invention in that the two bores are designed as angular bores which end in the region of the constriction of the control piston in a first or second radial opening, the axial distance of which is essentially equal to the length of the constriction, and the control slide on one the auxiliary control member forming, slidably mounted in the area of the constriction sleeve sits, which is so long that it closes the opening of the first angular bore in one end position and the opening of the second angular bore, while in the other end position it closes the opening of the second angular bore and Rather, it depends on me y ^
sleeve on the leading one
slider of «» "Ρ ^ ί ^ ΐ

Further f ^ s advantage that d didn’t just start then, »J ™ ber operated »^^^ already riding after

play the Ρ ™? ^^
control in one such

i. steering. ^without _K ^ ^ra . ° S ^e ™ ⁿ 8

is headed by soba d ^ J

its end position the g

the invention

to manufacture and
x ₅ accessible if there is

got to. _o " _örn ~ R _P

By the "founding pleasure."

Schers, be aware of it
Main control ^menu
ao lungs stop independently, since the
Negative pressure in the mirror plate in

Auxiliary controller H £ ^

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Work _at _

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of

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Hold on for so long until this is through pressure on the relevant
, 5 to skip m his

will. The purpose of showing f

Main piston from its end positions is particularly advantageous! "Wise ert"'":. J _d

An exemplary embodiment of the invention is shown in the drawings of the _{arrangement of the thrust piston} .

benmotors. , r ", i., no" "em slider of the

F1 g. 2 shows the «^" »W ^ SueroS ^ im Main control valve with the main control valve

Section c _rhi more like Fiκ 2 in plan-

F1 g. 3 shows the slider naen ng · ^

sees. ,. _Λ Working piston 2

In the working cylinder 1 _{[is the £} ^{A ^ ei} ™

with the piston rod 3 .f ^ -J ^^^ mmcvi the cylinder space into a «" * «: ^ yhnder | amme

and an upper ^ «SiSue D ^ esS consists of the« »" P ^^ J ^^ from the valve cylinder 7 and
the mirror plate 8 ^ to

Invention

Ä _g

n £ becomesÜd2S. reaches that the control slide is provided with a recess into which a peripheral flange of the sleeve engages.

In a further embodiment of the invention, the control piston of the main control valve consists of one cylindrical core and two annular heads that are pushed onto the core and through in corresponding Holes engaging cross pins are secured.

the

lying AS
Kanafll is connected via line 13 to ^hn ^ rkanimer 5.

In the valve cylinder 7 slides. Steue ™ ^{n is with O-} rings 15 and JJ I ^ ⁰

linderwand ^ «^" J ^ 'an upper head 17 and
Fig. I _- he is ^^
are the two heads

Zy-8 in

a *.

out that they are below the upper head 17 en- mode of operation
dct. The second angle hole 25 extends from the

The upper slide head surface in the longitudinal direction of the piston motor is located in the slide down and then at right angles F i g. 1 position shown and the pressure radial out of the slide that it is turned on above 5 source 23, the lower cylinder dcs lower head 18 ends. room 4 via line 10, channel 9 of mirror plate 8

Slides over the constriction of the control slide and the control slide 27 is connected to the outlet II.

the auxiliary control member in the form of the control sleeve 26. den. Line 13, on the other hand, connects the upper cylinder

It is in Fig. 1 in its upper end position, in Fig. 2 in derraum5 via the pressure chamber 22 of the main control

drawn in a central position. This control sleeve 26 is io valve with the pressure source 23. The control sleeve 26,

so long that in its upper position it closes the radial opening which is in its upper position

opening of the angled bore 25 and the radial the lower control pressure chamber below the slide

opening of the lower angled bore 24 seals. In overhead 18 from. The line is through the valve 36

its lower position, it gives the radial 35 also closed at its other end, so that

Opening of the angled bore 24 free and seals the 15 in it the existing residual pressure is trapped.

radial opening of the angled bore 25. The upper control pressure chamber and the line 30

The channels 9 and 12 in the mirror plate 8, on the other hand, are released from the pressure chamber slide 27 via the control sleeve 25 alternately connecting to the outlet 11 with the control-released angular bore 25 bears a recess 28 into which a mer 22 is pressurized. This pressure affects collar 29 of the control sleeve 26 engages. The tax ao but not off. On the one hand, namely, the pressure present in the slide 27 follows the movements of the Stcu line 35 as a result of a movement of the ermuffe26. Slide down an increasing resistance

The upper reversing pressure space, opposed to the one in the upper one, on the other hand is the one at the top of the lower part of the valve cylinder 7 of the main control valve 6 Ren annular surface of the upper slide head 17 anliedurch the upper slide head 17 is formed, is as lowing control slide 27 on its underside with acted upon by a line 30 with an upper reversing vein the pressure of the pressure chamber 22, wähtil 32 connected. This is in the upper end of its inside via outlet U with a low plate of the working cylinder 1 screwed in. It ends up being pressure connected. The cross-sections are so leggy an actuating pin 33, which measures in the upper Zy- that the control slide is without larger Lindcrraum 5 protrudes into it. 30 effort not moved out of its end position.

The reversing valve 32 is capped at the top. When the piston 2 has reached its lowest position, see above 38 completed. In its interior it carries a valve he actuates via pin 37 and connects Sealing hood 39. The actuating pin 33 is thereby able to the lower control pressure chamber below the to lift this sealing hood 39, but only when the lower slide head 18 with the lower has overcome the pressure of a spring 40. A pressurized cylinder chamber 4. The one in the line second spring 41 presses the sealing hood 39 on 30 and the upper control pressure chamber above the obcihrcn Seat. Through channels 42, the space within Ren slide head 17 from the angled bore 25 is forward The pressure applied to the sealing hood 39 with the cylinder space 5 causes the sliding lip. is thrown down suddenly. The lower

If the interior of the reversing valve 32 is above 40, the control pressure chamber remains pressureless because the

the line 30 is under pressure and moves the working downward acceleration, the control sleeve 26 continues to piston 2 upwards, so that the upper Zj- ·· '"··· remains pressed up and thereby the connection

linder chamber 5 and thus via the channels 42 with manure of the lower control pressure chamber to the pressure tank

keeps this connected interior of the sealing hood 39 mer closed via the angled bore 24,
are pressureless, the sealing hood 39 is fixed 45 The control slide 27 now connects the un-

pressed on their seat. If the working piston 2 contacts direct cylinder space 4 via the pressure chamber 22 with

In its upper end position, the pin 33 presses the pressure source 23 and the upper cylinder space 5

scr first the spring 40 together. Then he lifts the outlet 11. The working piston 2 turns

the sealing hood 39. As soon as the first un- abruptly reverses its direction of movement and tightness on the seat surface of the sealing hood 39 50 goes upwards.

arises, the pressure inside and outside is equal. First, through the still open reversal of the Dichtangshaube 39, and the tensioned valve 36, the pressure in the Leitang 35 and the spring 40 throws it suddenly upwards. This direct control pressure chamber is built up again. Then The valve 36 closes again abruptly via the duct 30 and the valve 36 above the steamer.

Ben located space depressurized, and the Steoerkol- 55 The violent downward movement of the control piston

ben, who is under pressure from the other side, of the main control valve 6 is raised by the gathering

snaps into its upper position. avf the lower end wall of the cylinder 7

The Umsteuerventfl 32 thus causes a catch. The ki- Snap effect in the action of the control piston 14. Netic energy still drives the control sleeve The lower control pressure chamber, the inner Tefl 60 pieces further, until they turn off the Wmkelbohnmg 25-

of the control valve cylinder 7 of the main stea valve 6 closes and the angle guide 24 opens after em-

formed by the inner slide head 18 is guided upward movement of the working piston

with a line 35 with a lower control valve, the line closed by the valve 36 is

36 connected, which is put under pressure again in preparation with the actuating pin 37 hn In- 35

neren of the lower cylinder 4 ends and works in exactly the same way 65 Now the upper control pressure is also

Works like the valve 32. If the actuating pin 37 space above the upper slide head 17 is still below

actuated by the piston 2, the valve connects the previous pressure, the one through the closed

lower cylinder chamber 4 with the guide line 35. Valve 32 in the guide line 30 remains trapped. the

The piston is therefore under full pressure from above, from below and in the constriction.

So although the control piston 14 on all sides below If there is pressure, it remains in its position because the control slide 27 is now on the lower slide head is applied and the pressure of the pressure chamber 22 is effective from above, while its interior over the outlet 11 is under low pressure.

Even if the piston engine is used for a long time

was out of order and has become completely pressureless and the slide of the control valve in some way Position has stopped, it will return to its end at the latest after a play of the working piston lay back.

When the piston 2 has reached its upper end position, it relieves the upper control pressure chamber above the valve head 17 via valve 32, and there ¹ game starts again.

1 sheet of drawings

Claims (1)

Claims:. The invention relates to a control device for a with a gaseous fluid oe- 1. Control device for a piston engine with a gas-powered piston engine, consisting of two medium-sized fluids, piston-normally closed control valves operated by the engine, consisting of two normally one each from the engine piston, for example when it is open-ended, one of which is one of its control valves both end positions is opened, and one of the motor piston is opened approximately when one of its two end positions is reached by a main one of its two end positions controlled by the control valves, and one of the control valve, one of which is controlled by the main control valve under the influence of the main one, is opened in two end via a line each with a control valve, which is connected to one of the control valves under the influence of the pressure chamber alternately in two frontal over, each one prevailing fluid pressure ver-line with one of the control valves connectable sliding control piston and one with the control pressure chambers prevailing Strömungsmit- butt coupled spool for controlling teldruckes displaceable control piston and the fluid for pressurizing and Entlaeinen with the control piston coupled control is stung of the engine piston, said each of the sliders for controlling the fluid a pressure chamber via one in the control piston for pressurizing and Relief of the motor-provided bore, containing a piston closed with the control piston, in each case the one pressure-interacting auxiliary control element and a single chamber via a respective pre-constriction of the control piston with the flow-monitoring bore in the control piston, one with the control piston and ao pressure source the other via one of the cooperating auxiliary control members and a single valve with a low pressure area constriction of the control piston with the flow connection. medium pressure source and the other via one each. the control valves with a range low so that the piston thrust movement in the two Pressure is connected, thus marked »5 reversal positions very quickly, so ideally suddenly shows that the two bores are reversed as a winch so that the piston movement as a whole conical bores (24 and 25) are formed, which together with a in the area of the constriction of the control piston towards the course. The tax pre- in a first or second radial opening devices must be robust and operationally reliable and in front the, the axial distance of which is essentially insensitive to changes in viscosity is equal to the length of the constriction and that of the mist conveyed in the gaseous fluid The control slide (27) on a lubricant contained in the auxiliary control and against