DE2022061B - Control device for a piston engine operated by pressure medium - Google Patents

Description

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clamped flexible lamellae 5 the cylinder head «U

2. This

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connected and open to atmosphere ^ '^^^ T, watch grinding 26 n. These measures require a kind of ^Au fl ¹ "^ ™, ™ * boys 28 and 29 for atmo-, pp and »^^^ Soaps 26 and 27 are stabilized and lead to an overturning of the sphere, uie λ ^ _G ^ _{the enüan} g of _the

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Wn. and ZylintodnricWong with associated

38

with the BeV-ugszeichen D and E. ti and rtg'cgengesied sections of the piston ? S £ i3S

openings 3Sί (F

35. Leadership

position at one end between rod H and An

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lower section of the piston and cylinder assembly A according to F ί g. 3 emitted gas escapes via channel E and goes via loop 27 to the atmosphere.

The downward movement of the rod brings the head plate 18 against the cylinder head 12, whereby the pad 19 of the plate closes the opening 37. As a result, the gas flow through the lines 38 ceases, and a gas switching current flows through the line 8. This switches the main flow of working gas to the channel 4 and thus to the line E , causing the rod 11 to move back. Although the upper opening 37 then opens again, the Coanda effect ensures that the flow of working gas which now flows through the fluidic control device B continues to pass through the line E.

When the rod 11 reaches the upper end of its stroke according to FIG. 3, the lower opening 37 is blocked by the cushion 19 on the lower plate 18, after which the same sequence of processes occurs and the gas flow to the channel 3 and the line D are switched over. Then a work cycle is completed. It has been found that the engine is self-starting in that the working gas supplied to the fluidic control device B seeks out one or the other outlet duct 3 or 4; although the theory suggests that the gas flow could initially be split between the two channels, it has been found in practice that this is not the case, possibly considering that no practical embodiment is exactly symmetrical. Once an exit channel has been selected, the Coanda effect fixes the current along this channel.

It was found that piston engines of the most varied dimensions are built according to the invention

ίο can be. The speed of these engines is expediently set by varying the air supply pressure or that the variable Adjusts pressure throttles 33 and 34 (FIG. 2). A wide range of speeds is possible.

Motors according to the invention are useful for chemical plants and chemical analysis. you are useful as a source of low thrust when stirring liquids, e.g. B. for melting point apparatus, where excessive thrust conventional electrically

ao driven agitators often leads to breakage. Since there are no electrical parts, the inventive Engine safe in very flammable atmospheres. It was found that engines according to the invention, smaller and quieter and more reliable

“5 lighter than other reciprocating air motors are.

1 sheet of drawings

Claims (3)

2Ö22 061 3 ι 2 flow lines, the outflow of which is alternately patent claims: can be controlled with the help of a control device that is connected to a protruding from the cylinder, the lifting 1. Control device for a piston rod carrying pressure medium is attached. Actuated piston motor for reciprocating S It is a control device of this type for a movement, the cylinder of which is known for two-sided Beauf thread cutting machine, be ⁵ which is connected to the impact of a reciprocating piston at the two ends of the reciprocating piston on one side a piston rod is connected to a pressure medium line , the outside of the cylinder a closure body, which has a common pressure medium source, with which at the distance of the piston stroke alternately with the other pressure medium line io located outflow openings of the two permanent through control by means of a bistable fluid flow lines can be acted upon To be stable, the piston rod must have at least one of the double positions with the aid of the piston motor by means of the extension stroke length, so that a cross-flow in each of the piston end positions results in a very space-consuming system which Ιιιησρη iimcr-tiaithnr cinH wnhpj t \\ e T pitimo fiir t «rfnriilv.r fltnaus additional measures. To local the cross-currents require a cross-connection between the support and the fixation of the permanent through-flow ducts of the same kind, directly from a pressure medium at a distance from the cylinder,
source-fed permanent duichflow lines. There is another, similar control device for the outflow of which can be controlled alternately with the aid of a piston engine which drives a crankshaft and which is known on a 20. in which the line for the cross-currents is a protruding from the cylinder, the reciprocating piston cross connection between two identical flow-guiding piston rod is attached, characterized by the axial distance in the cylinder that open to the drive for the jacket of the piston engine and a stirrer certain when released The piston rod can be acted upon by a reciprocating piston end face with which the pressure medium located in the cylinder (11) on both sides from the cylinder (10) can be acted upon. One stands and that the outflow of the permanent flow- such an arrangement requires a relatively pipeline (? 8.39) through an outward-pointing long piston, which inevitably has a considerable mass opening (37) in each of the two cylinder faces and a not inconsiderable movement resistance ( 12) is formed, each with the help of one at the booth offers. In addition, there is also a compulsory end of the piston rod located, a relatively long cylinder and with the one half of the control device forming, considerable strokes, as are necessary in the case of reciprocating closing bodies (18, 21) closing agitation large piston length, bar, which is designed at the same time as a buffer plate for which a satisfactory actuation and control limitation of the piston movement. tion, especially slow piston stroke 2. Control device according to claim 1, characterized in that 35 is. characterized in that the reciprocating piston (14.15) of the object of the invention is to provide a control device a pair between plates (14 ', 15') of the type described at the beginning for the tensioned flexible lamellae (14,15) is formed, drove to create a stirring device, which is which are chamfered in a diverging manner on the outer circumference. More compact structure with less to be moved 3. Control device according to claim 1 or 2 40 piston mass allows easier control,
in which the piston directly through the fluidic This object is achieved in that the amplifier is acted upon, wherein the pressure '■ drive for a stirring device certain piston center lines for inflow as well as for outflow rod protrudes on both sides from the cylinder and serve each have an outflow line branching off at an acute angle to and that the outflow of the permanent flow lines inflow, 45 through an outwardly facing opening in each of which is characterized in that the outflow lines. two cylinder end faces are formed, which are connected to the outlet channels (3, 4) of the fluidic booster located at the associated end of the piston rod and to the atmosphere, which are one half of the control device forming sphere open drainage loops . the resilient closure body is closable, the 50 at the same time as a buffer plate for limiting the Piston movement is designed. By using The use of two piston rods ensures that the piston is guided independently of the piston design and thereby the training of a very The invention relates to a Steuereinrioh- 55 light and axially short piston with device for a pressure medium-actuated piston motor for low mass and resistance to movement enables back and forth movement, the cylinder for so that the control facilitates and the response on both sides of a reciprocating piston " Due to the arrangement of both ends on a pressure pipe line which is intended for the continuous flow lines, the medium source from a common pressure orifices in the cylinder end faces need the medium source alternately with the other pressure medium piston rods, not one of the double ones Stroke length telleitung by control by means of a bistable corresponding length, so that overall the fluidic booster can be acted upon, the stable piston engine can be made more compact, states with the help of the piston engine by triggering, which also has the advantage What is achieved is that in each case a cross-flow in the piston end positions can be changed, which is not cumbersome measures for local support, whereby the line for the cross-flow and fixation of continuous flow lines in a cross-connection between two identical, immediately spaced from the engine cylinder must be made by a pressure medium source fed permanent. Finally, the use of resilient