US3709243A - Switch device for fluidic logical circuit - Google Patents

Switch device for fluidic logical circuit Download PDF

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Publication number
US3709243A
US3709243A US00050017A US3709243DA US3709243A US 3709243 A US3709243 A US 3709243A US 00050017 A US00050017 A US 00050017A US 3709243D A US3709243D A US 3709243DA US 3709243 A US3709243 A US 3709243A
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United States
Prior art keywords
foil
fluid flow
chambers
channel
plates
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Expired - Lifetime
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US00050017A
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English (en)
Inventor
A Wieme
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Bekaert NV SA
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Bekaert NV SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/02—Details, e.g. special constructional devices for circuits with fluid elements, such as resistances, capacitive circuit elements; devices preventing reaction coupling in composite elements ; Switch boards; Programme devices
    • F15C1/06—Constructional details; Selection of specified materials ; Constructional realisation of one single element; Canal shapes; Jet nozzles; Assembling an element with other devices, only if the element forms the main part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2224—Structure of body of device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2273—Device including linearly-aligned power stream emitter and power stream collector

Definitions

  • ABSTRACT A switch device or element for a fluidic logical circuit, and more particularly to the construction of two airtight combined bodies, e.g., plates, between which a perforated foil is present.
  • the two combined bodies have recesses cooperating with openings through the foil to form a plurality of chambers and channels.
  • Fluids passed through the chambers and channels then function as fluid logical circuit elements in the form of, for example, gates, amplifiers, etc.
  • a fluidic logical circuit consists of a configuration of fluid chambers and connecting channels.
  • the fluid chambers are enclosed spaces into which one or more fluid jets can discharge and can be deviated in direction depending upon the shape of'this space or upon the presence of other fluid jets.
  • the device or element in accordance with the invention is characterized by the fact that a number of recesses are present in the contact surface of the two combined bodies, which together with the apertures in the punched plate or perforated foil form a configuration of fluid chambers and channels. At least one channel division is present with divided channels which lie on both sides of the perforated foil and proceed mainly in the same direction from the cavity formed by an aperture in the foil and the recesses on both sides. The channel to be divided off discharges, principally, in the same direction into this cavity.
  • the combined bodies are mostly small plates, and the recesses in the contact surface thereof do not run through the entire thickness of these plates, with the exception of the apertures used for the fluid supply and discharge.
  • the plates with recesses may be milled and etched, or else cast.
  • the recesses are preferably pressed into the surface by means of a press with hard steel die parts as is used for pressing into an aluminum surface. For pressing the channels, hard bent steel wires can be used.
  • FIGS. 10 and lb show a device that canbe used as a NO circuit
  • FIGS. 2a and 2b show a bistable device with Coanda effect
  • FIG. 3 shows an amplifying device
  • FIG. 4 shows a coding matrix with fluidic diodes at the points of intersection
  • FIG. 5 shows a device the intermediate foil of which consists of several perforated sub-foils
  • FIG. 6 shows a press for the stamping ofa channel.
  • FIGS. la and lb show a device or arrangement that can serve for the execution of a NO-function.
  • FIG. la shows the components prior to the combination.
  • the device consists of two plates 1 and 2 between which the perforated foil or plate 3 is present.
  • Plate 1 contains a groove 4 into which a supply channel 5 discharges.
  • the channel 5 is drilled transversally through the plate.
  • Plate 2 contains only a semi-groove 6 which runs in the same direction as the groove 4.
  • care is taken to ensure that the aperture 7 in the foil and the extremity 8 of the groove 6 lie opposite the supply channel'5 and that both grooves 4'and 6 are parallel.
  • FIG. lb shows a cross-section in the direction AA, of the plates thus combined.
  • a NO-function can be executed with the I element or device as follows: an air current that is injected into the element or device via pipe 4 will flow straight through to the signal outlet, provided that no air current is injected via channel 5. In the latter case, all air is diverted to channel 6.
  • This device thus contains a channel division.
  • the divided channels (channel 6 and the right half of channel 4; FIG. lb) lie on both sides of the foil and proceed from the cavity formed by the aperture 7 and the recesses in the plates 1 and 2. This cavity serves as interaction chamber where the two inflowing air currents can interact.
  • the channel to be divided (left half of channel 4; FIG. lb) discharges into this cavity in the same direction as the divided channels.
  • FIGS. 2a and 2b A bistable device or arrangement with Coanda effect can be executed in accordance with FIGS. 2a and 2b (The effect is described, e.g., in Systems Technology of Sept. 2, I967, pp. 2-3).
  • FIG. 2a shows the device prior to the combination of plates 9 and 10 withintermediate foil 12'
  • FIG. 2b shows a longitudinal section.
  • the input channel 11 for the compressed air converges to a narrow air fissure with height h. As there is no longer any recess in the contact surface of both plates at this location, the height of this air fissure is equal to the thickness of the foil 12.
  • Two control channels 15 and 16 discharge into the space before the channel division, and at the level of the division itself there are also two ventilation channels l7 and 18.
  • the aperture 19 in the foil makes possible the air circulation 11 to one of the two divided channels 13 and 11.
  • the air introduced converges in the input channel 11 to a thin layer of air which is forced through the air fissure and proceeds further in the fluid chamber along one of the two walls 21 and 22,
  • the bistable devices or arrangements with Coanda effect have heretofore been manufactured in such a way, that the configuration of all channels was two-dimensional in a level or plane parallel with the plane or level of the plates..
  • This configuration was formed by casting of the plates or by milling or else etching in'the surface thereof.
  • the configuration is, however, still to a large extent two-dimensional in a level or plane perpendicular to the level or plane of the plates (see, e.g. FIG. 2b) This has a great advantage.
  • the ratio .h/b (b; see FIG. 2a, h; see FIG.
  • the height h of the air fissure is determined by the thickness of the foil 12, and the implementation of a thin air fissure is very simple and solely limited by the thickness of the foil.
  • an element is no longer confined to being two-dimensional in a single plane or level, but can be situated partly in the level according to the plates (channels 15,16, 17 and 18) and partly in a level perpendicular'th'ereto (channels 13 and 14 in FIG. 2b).
  • the dividing'wall between the channels adjacent to each other in thelast named level is the foil, and this can be kept thin.
  • top and bottom plates 9 and l of the device according to FIG. 2a are entirely identical. With a structure with grooved plates that form a two-dimensional configuration, entirely in the plane or level of the plates, this is only possible for symmetrical configurations.
  • the configuration which was implemented in the device according to FIG. 2 is however not symmetrical (see, indeed, FIG. 2b), andnevertheless it waspossible, according to the invention, to design a structure with identical top and bottom plate.
  • An amplifier of thisitype is shown in section in FIG. 3. It consists of two combined plates 24 and 25, with the intermediate foil26.
  • the input channel 27 for the highpowered current discharges into the interaction chamber 28, which is-formed by a part of the aperture 29 in the foil and the recesses in the plates 24 and 25 on both sides.
  • Two control channels 60 and 61 also discharge into the interaction chamber, the introduced flow of which ensures the deviation of the main jet which flows into the interaction chamber via channel 27.
  • With groove-shaped recesses in'the plates 24 and 25, the two divided channels 30 and 31 are formed on both sides of the foil 26, which run in the same direction as that in which the input channel 27 discharges into the interaction chamber 28.
  • the arrangement according to FIG. 1 may be used as.
  • a coding matrix can be formed in a relatively simple way.
  • FIG. 4. It consists of two combined plates 32 and '33, with the intermediate foil 34.
  • One plate contains. a number of wide pressure channels 35, 36 and 37 for the supply of compressed air. These channels correspond to the rows of the matrix.
  • Each channel contains as many side-channels as there are columns in the matrix (e.g., channels 38, 39 and 40).
  • the foil 34 con tains a number of apertures (e.g. 47 and 48), arranged at certain points of intersection of rows and columns. These points of intersection lie at the level of the extremities of the side-channels. When combining the plates, the apertures must therefore fit just over the tongue-shaped end of the corresponding side-channel.
  • Plate 32 contains in the contact surface as many parallel grooves as there are columns in the matrix.
  • each groove When combining the plates, each groove must fit over the apertures in the foil of the corresponding column.
  • a diode is formed of the type described above.
  • the diode of which, forexample, aperture 47 forms part, consists of achannel division with channel. 41 (channel to be'divided and divided channel which lie in each others extension) and the second divided channel 38.
  • channel 35 comes under pressure, then an air current flows via channel 38, aperture 47 and channel 41 to the outlet 44.
  • the compressed air is not transmitted via aperture 48 to the pressure channel 36.
  • the air current in channel 41 instead flows past this aperture and will not change direction by if it can flow straight ahead. 7
  • This foil may be a punched card or a piece of a punched tape. In this way, a certain sequence of code signals can thus rapidly be replaced by another sequence. These may, for example, be series of code signals which correspond to specific operations of machine tools or other machines. The work program of the machine is then determined by the punched card which serves as intermediate foil.
  • a characteristic feature of this coding matrix is the fact that, for the diodes, the groove for the channel to be divided and the divided channel lying in the extension is common for all diodes of the same column (e.g., groove 44) in one plate 32, while for the diodes of the same row, the grooves for the other divided channel (e.g., grooves 38, 39 and 40) discharge into a common channel 35 in the other plate 33.
  • the grooves for the other divided channel e.g., grooves 38, 39 and 40
  • the word foil has been used, to mean thereby that a small plate is used which is sufficiently thin to ensure that the aircurrent could flow away via both divided channels, without appreciable loss of kinetic energywhich is the consequenceof a collision against the wall of the aperture.
  • the shape and structure of this foil are thus of no importance in the definition of the term foil.
  • the inserted foil may consist of several accumulated sub-foils, which together still correspond to the interpretation of foil referred to above. Apertures can still be made in these plates in such a way that after accumulation thin channels are still present inside the foil. This is shown in cross-section in FIG. 5.
  • Such an element or device consists of the bodies to be combined 50 and 51 which contain recesses in the contact surface and a laminated foil 52 which consists of the sub-foils 53, 54 and 55.
  • the system according to FIG. 4 can be made cylindrical ly, whereby plate 33 is replaced by a cylinder.
  • Aluminum plates will preferably be used.
  • the recesses are then stamped therein by means of a press with shapes in hard steel.
  • the channel division will always consist of a channel to be divided and the divided channels, whereby the direction in which these channels discharge into the cavity which is formed by the aperture in the foil and the recesses on both sides thereof, is the same.
  • Devices with slight directional variances, which can be applied without inadmissible loss of energy through the change in direction also belong to the devices according to the invention, as the channels then nevertheless have-mainly the same direction.
  • the devices can be used with an arbitrary fluid, liquid or gas, and the applications are not limited to compressed air alone.
  • a switch device may, if need be, consist of more than two bodies with a perforated foil between them.
  • one of the two bodies may be combined, on another side, with yet another body, with or without foil in between.
  • These bodies may also be arranged in layers, whereby the required shape is obtained by stacking several thin plates on top of each other.
  • a fluidic logical element comprising, in combination, two plates each having in a face thereof a grooveshaped recess extending in the direction of fluid flow, a foil having therein at least one aperture and being hermetically sealed between said two plate faces so as to define two chambers by means of the separation of said foil from the bottoms of said two groove-shaped recesses, said foil having an edge acting to divide the fluid flow delivered to said chambers, inlet means for 3.
  • the logical element as defined in claim I including at least one other recess formed in the face of one of said plates communicating with said chambers at a point adjacent to said edge for forming one controlled channel arranged to feed a control fluid flow signal into said chambers, and control "input means communicating with said other recess.
  • control input means discharges said control fluid flow signal into said chambers in a direction for assuring deviation of said fluid flow.
  • both of said groove-shaped recesses are shaped with varying depths for interacting with said fluid flow to generate a substantial Coanda effect.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Burglar Alarm Systems (AREA)
  • Surgical Instruments (AREA)
  • Amplifiers (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Measuring Volume Flow (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
US00050017A 1969-07-01 1970-06-26 Switch device for fluidic logical circuit Expired - Lifetime US3709243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6910039A NL6910039A (enrdf_load_stackoverflow) 1969-07-01 1969-07-01

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US3709243A true US3709243A (en) 1973-01-09

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US00050017A Expired - Lifetime US3709243A (en) 1969-07-01 1970-06-26 Switch device for fluidic logical circuit

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US (1) US3709243A (enrdf_load_stackoverflow)
JP (1) JPS4840269B1 (enrdf_load_stackoverflow)
BE (1) BE751133A (enrdf_load_stackoverflow)
CA (1) CA930309A (enrdf_load_stackoverflow)
CH (1) CH529933A (enrdf_load_stackoverflow)
CS (1) CS154664B2 (enrdf_load_stackoverflow)
DE (1) DE2031728A1 (enrdf_load_stackoverflow)
FR (1) FR2050416B1 (enrdf_load_stackoverflow)
GB (1) GB1314888A (enrdf_load_stackoverflow)
NL (1) NL6910039A (enrdf_load_stackoverflow)
SE (1) SE360150B (enrdf_load_stackoverflow)
SU (1) SU462353A3 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4508267A (en) * 1980-01-14 1985-04-02 Bowles Fluidics Corporation Liquid oscillator device
US4518013A (en) * 1981-11-27 1985-05-21 Lazarus John H Pressure compensating water flow control devices
US20090114293A1 (en) * 2005-10-25 2009-05-07 Masaki Kanai Flow cell and process for producing the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49115175A (enrdf_load_stackoverflow) * 1973-03-10 1974-11-02
JPS5018762U (enrdf_load_stackoverflow) * 1973-06-19 1975-03-01
GB2355543A (en) * 1999-10-20 2001-04-25 Univ Sheffield Fluidic flow control and fluidic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468331A (en) * 1967-07-03 1969-09-23 Martin Marietta Corp Stacked port fluidic amplifier
US3472259A (en) * 1967-06-23 1969-10-14 Foxboro Co Fluid information system
US3534755A (en) * 1968-07-18 1970-10-20 Gen Electric High signal-to-noise fluid amplifier and fluidic components
US3576191A (en) * 1969-02-24 1971-04-27 Honeywell Inc Temperature-responsive sonic oscillator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1391362A (fr) * 1964-04-21 1965-03-05 Sperry Rand Corp Diode à fluide
GB1130973A (en) * 1966-05-03 1968-10-16 Nat Res Dev Improvements in or relating to fluid logic devices
FR1526693A (fr) * 1967-06-12 1968-05-24 Elektronische Rechenmasch Ind Matrice de décodage hydromécanique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472259A (en) * 1967-06-23 1969-10-14 Foxboro Co Fluid information system
US3468331A (en) * 1967-07-03 1969-09-23 Martin Marietta Corp Stacked port fluidic amplifier
US3534755A (en) * 1968-07-18 1970-10-20 Gen Electric High signal-to-noise fluid amplifier and fluidic components
US3576191A (en) * 1969-02-24 1971-04-27 Honeywell Inc Temperature-responsive sonic oscillator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4508267A (en) * 1980-01-14 1985-04-02 Bowles Fluidics Corporation Liquid oscillator device
US4518013A (en) * 1981-11-27 1985-05-21 Lazarus John H Pressure compensating water flow control devices
US20090114293A1 (en) * 2005-10-25 2009-05-07 Masaki Kanai Flow cell and process for producing the same

Also Published As

Publication number Publication date
FR2050416A1 (enrdf_load_stackoverflow) 1971-04-02
CS154664B2 (enrdf_load_stackoverflow) 1974-04-30
CA930309A (en) 1973-07-17
FR2050416B1 (enrdf_load_stackoverflow) 1973-11-16
JPS4840269B1 (enrdf_load_stackoverflow) 1973-11-29
BE751133A (nl) 1970-11-03
SU462353A3 (ru) 1975-02-28
CH529933A (fr) 1972-10-31
SE360150B (enrdf_load_stackoverflow) 1973-09-17
GB1314888A (en) 1973-04-26
NL6910039A (enrdf_load_stackoverflow) 1971-01-05
DE2031728A1 (de) 1971-01-14

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