DE1928581A1 - Monostable Fluidic OR gate with multiple entrances - Google Patents

Description

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THE BEHDXX CORPORATION, Fisher Building " Detroit * Michigan, UBA. "* ~"

Monostable Fluidic OR gate with multiple inputs

The invention relates to a monostable fluidic ODEH-tor with Multiple inputs where isolated inputs are used arrive to avoid the generation of spurious signals that can be transferred to other stages of the circuit.

OR gates with multiple entrances according to the current status technology have one or the other of two disadvantages which seriously limit the scope. One of these disadvantages is the relative Switching inability that are present in devices that structurally the same as proportional amplifiers. The other of these Disadvantages consists in the loss of the control medium and the Signal attenuation, which experience has shown to occur with monostable 'i'oren, those with ventilated reaction chambers and powerful Overlay control pulses work.

An object of the present invention is directed to Creation of a Fluidic OR / NOR-Tcires or Gates that the to-S. above mentioned errors and disadvantages .not has.

Since OR / NOR gates are known in which the multiple

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Control channels are connected to form a single control port and since these gates have the further disadvantage that spurious signals are generated in the balance of the system by using them, another object of the present invention is to see a FluidicODER / NOR To create a gate that does not generate spurious signals in other portions of the circuit in which it is used. Further gate parts and details of the invention emerge from the following description of an exemplary embodiment with reference to the drawing, the single figure of which shows a multiple input OR / NOR gate or gate which schematically embodies and reproduces the teaching of the present invention. ■ '- · ■. '\ ■ - Λ': "- ^: Ζ · ..-.

In the drawing a Fluidic OR / NOR ^ Oft / NOR Gate) is shown, ; since * has an inlet opening 10, which is connected to a Source of a pressurized medium P_ in connection is · The opening 30 is flow-wise above your Channel 14 with #ex nozzle connection to provide a power transmission of the medium in the medium reaction zone, the general is denoted by 16. The reaction zone 16 is with equipped with a facility with which: Help an output channel preference can be established, namely «ine ventilation 18 and a snug wall 20, so that a power atom of a medium coming out of the nozzle 12 the reaction zone 16 flows and out through the exit channel 22 can flow, which is referred to as NOR channel »

As is well known, the Coanda effect says that medium flowing over a wall "hugs" this wall which makes the zone between the stream and the wall

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is sucked, whereby a low pressure zone is created · for For this purpose, the snuggling wall 20 is provided and the ventilation 18 is provided to allow a possible snuggling the side wall 32 of the reaction zone 16 to keep out. The power medium flow therefore tends towards the output channel 22.

In the vicinity of the clinging wall 20 there are a large number of control channels, referred to and shown here as two channels 24 and 26, with reaction zone 16 in FIG Flow connection · While only two of these are shown, like this it is obvious that it is possible to provide a number other than this number of control channels. A second output channel 28 is also shown and this one stands in with the reaction zone. Flow connection and is designated as UDER channel.

In the reaction zone to, downstream of the aeration 18 and upstream of exit duct 28, is an override controller Located, and has the shape of a concave recess 30 (cusp) · The recess 30 takes an intermediate layer with respect to the control channels 24 and 26 to collect medium flowing out of the control channels, and to direct this back into the reaction zone 16 in the event that more than one control channel has a control medium flow or a single channel has a strong overlay *, overly-strong signal.

In operation, the gate operates in the following catfish · A source of a medium with a Pruck P ₈ causes a power flow of the medium from the nozzle 12 into the reaction

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zone 16 entry. In the absence of a control signal from a of the control channels, the power beam shows an affinity to the KOE exit channel 22 and hugs the wall 20, which is intended for this purpose · In the presence of a Ventilation 18 is arranged so that a similar snuggling occurs on the other side of the reaction zone 16, since the suction effect, which causes the wall to nestle, decreases} is prevented.

The combination of the clinging water 20, ventilation opening 18, the rare wall 32 work together »so that a sharp switching characteristic is generated» whether switching from NOR to OBBR or from QDlR »and HOR takes place. The clinging wall 20 is important, however, around the gate To give a monostable operating characteristic "The ventilation opening 18 itself is necessary" to prevent a long overlapping control signal or directly successive control signals from switching the flow of the medium in the non-preferred position for a sufficiently long period of time » To give the power flow of the ψ medium the opportunity to suck in the zone between the flow of the medium and the rare wall 32 · Without the ventilation opening, the Coanda effect would cause the flow of the medium to cling to the wall 3-2«

If a control pulse appears in one of the control channels 24 or 26, * o if the pressure in the starting zone is suddenly increased, so that nestling against the wall is prevented and then the power ray of the medium «physically through moment transmission is shifted from the HOR output channel 22 to the OR output channel.

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appear, or if two control pulses together in the control channels 24 and 26 should appear or occur, the resulting control pressure on the medium supply flow, the emerges from the nozzle 12, be sure to override this. Bas would mean that instead of a 'simple slip of the current from channel 22 to channel 28, the control pulse to it would tend to drive the power medium flow beyond channel 2Θ to push or force until part of the medium power flow enters the ventilation opening 18. The concave »recess 30 can prevent this by using a passive overpricing control provides.

When the medium power flow starts from channel 22 to channel 2Θ to switch, so would the presence of additional Control pulse text in channels 24 and 26 have a noticeable effect exercise. However, additional control pulses would drive the medium power flow cause calibration to continue according to reohts (in relation to on the figure according to the drawing) «than usual The case would be · If the medium power flow continues Moving further towards reohts becomes part of the medium's lead Current, which now contains control medium, through the concave recess 30 deflected and against the main medium flow in but generally opposite way back to the control impulses » steered. The stronger these control impulses are and the further to the right the medium flow is forced, the greater the effect of the concave recess 30, i.e. the deflection and Diverting larger amounts of medium from the main medium flow . appears correspondingly more.

In the case that only a single control signal is generated, the medium conducting flow would be to the outside through the channel 28

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stream without the over-inflation control recess30 here when would be consulted * This means that the signal by deflecting the medium through the recess 30 uncut remains until more than one control signal from the control channels 24 and 26 are received and the song that passes through the recess is deflected, weakens the medium power flow in an extent that comes close to the moment and escapes it. speaks, which was added by the additional control signal · fe Therefore remains the strength of the medium power beam or Flow visibly unavoided and undiminished, even if there is an override condition

Thus, the device of the present invention retains its monostable mode of operation in all operating states and conditions and there is no medium or signal attenuation or loss for the case where control pulses coAniidate.

All recognizable in the description and in the drawing The details shown are important for the invention ι

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Claims (3)

- 7 * "PATENT CLAIMS 1. Fluidic OR / NQR gate or gate with a source of a pressurized medium to create a stream of a medium to be introduced through a nozzle into a media reaction zone, with output channels connected to the medium reaction zone, which in a suitable manner the medium flow from 'the medium reaction zone discharge, with a plurality of control channels leading to the medium reaction zone and generally across the main medium flow and run arranged to one side of this medium flow, with a ventilation duct that adjoins the medium reaction zone is connected and generally transverse to the main medium flow and to one side of this flow opposite the plurality the öteuerKauaxe is arranged, characterized in that, that a passive media overload control device (30) is provided and is located in the medium reaction zone (16) near the ventilation channel (18) and a counter control medium pressure can provide in the event that the jet or the flow of the medium is overdriven. 2. Fluidic OR / MOR gate or gate according to claim 1, characterized in that the passive media override control device (30) the shape of a concave bulge (30) is at the level of the connection point located downstream the ventilation duct (18) and the medium rejection zone (16) is arranged. 3. Fluidic OR / NOR gate or gate according to claims 1 or 2, thereby characterized in that a snug wall (20) downstream of the many control channels (24,26) is provided to provide a * to build up preferred output flow of the medium flow. 009852/1041 S. _t Blank page