US3461898A - Fluid pulse device - Google Patents

Fluid pulse device Download PDF

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Publication number
US3461898A
US3461898A US550284A US3461898DA US3461898A US 3461898 A US3461898 A US 3461898A US 550284 A US550284 A US 550284A US 3461898D A US3461898D A US 3461898DA US 3461898 A US3461898 A US 3461898A
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US
United States
Prior art keywords
fluid
power stream
control
stream
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US550284A
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English (en)
Inventor
Robert H Bellman
Thomas W Bermel
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Corning Glass Works
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Corning Glass Works
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Publication date
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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
    • F15C1/08—Boundary-layer devices, e.g. wall-attachment amplifiers coanda effect
    • F15C1/10—Boundary-layer devices, e.g. wall-attachment amplifiers coanda effect for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate, AND-gate; Comparators; Pulse generators
    • 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]
    • Y10T137/2229—Device including passages having V over T configuration
    • Y10T137/2234—And feedback passage[s] or path[s]
    • 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]
    • Y10T137/2229—Device including passages having V over T configuration
    • Y10T137/224—With particular characteristics of control input

Definitions

  • a high energy fluid stream hereinafter referred to as the power stream issues into an interaction chamber from a nozzle or orifice constructed such that the power stream is well defined in space, which stream is directed toward a receiving aperture by the pressure distribution in the power stream boundary layer region.
  • This pressure distribution is controlled by the wall configuration of the interaction chamber, the power stream energy level, the fluid transport characteristics, the back loading of the amplifier outlet passages, and the flow of control fluid to the boundary layer region.
  • the high velocity power stream issuing from the power stream orifice creates regions of low pressure adjacent the interaction chamber wall and this together with the configuration of the interaction chamber in part cause the power stream to lock-on to one side wall and remain in the lockedon condition without any control fluid flow.
  • Control fluid flow is brought about by control fluid orifices which issue a control stream directed toward the power stream in a direction generally perpendicular thereto.
  • the power stream can be deflected to the opposite wall of the interaction chamber by the control stream and be caused to lock-on thereto, as heretofore described, and remain there even after the control stream has been terminated.
  • the power stream can lock-on to one wall only. It can be deflected to the opposite wall but only for such time as there is a control stream and when the control stream has been terminated the power stream will automatically return and lock-on to the first wall.
  • the apparatus is provided with two outlets or fluid recovery apertures or passages facing the power stream, which outlet passages are arranged such that when the power stream is locked-on to one wall in either a bistable or monostable device, substantially all the fluid of the power stream is directed to one of the outlet passages and when it is locked-on or deflected to the other wall, as in bistable and monostable devices respectively, substantially all the fluid of the power stream is directed to the other of the outlet passages.
  • the fluid so directed to either or both of the passages may be delivered to utilization devices as desired.
  • Another object of this invention is to provide an economic fluid device wherein the duration of the outlet pulse can be accurately predetermined.
  • a further object of this invention is to provide a fluid device wherein the duration of the outlet pulse is substantially independent of the duration of the inlet signal.
  • a still further object is to provide an economic fluid device which operates predictably.
  • a fluid device having an inlet means, means for issuing a fluid power stream, means defining a pair of outlet pas sages positioned in an intercepting relationship to the power stream such that the undeflected power stream will stabilize and flow only in one of said outlet passages, that is the device is monostable, first and second control means positioned to deflect said power stream from one of said outlet passages to the other of said outlet passages, said first control means communicating with said inlet means, said second control means positioned in opposition to said first control means, and delay means connected intermediate the inlet means and the second control means.
  • FIGURE 1 is a side elevation of a fluid operated device embodying the present invention.
  • FIGURE 2 is a plan view of a fluid operated device embodying the present invention.
  • FIGURE 3 is a dual graph illustrating the inlet and outlet pressures with respect to time of the fluid pulse device of the present invention.
  • FIGURE 4 is a plan view of another embodiment of a fluid operated device embodying the present invention.
  • the stream fluid may be compressible such as air, nitrogen, or other gases, or incompressible such as water or other liquids. Both the compressible or incompressible fluids may contain solid material. This invention is not limited to any particular fluid. I
  • a fluid pulse device 10 comprising plates 12, 14, and 16 within which suitable passages or apertures are formed.
  • the passages and internal apertures in plates 12 and 16 must be formed to a depth less than the plate thickness since these plates are also covers for the device.
  • the device may be formed partly in one of the plates while t e balance of it, such as the delay line portion, being formed in another of the plates with the plates thereafter being assembled in such a manner as to permit proper interconnection of the passages.
  • Tubes 18, 20, and 22 provide suitable connections to the various passages. Plates 12, 14,
  • plate 12 is shown formed of transparent material.
  • Plates 12, 14, and 16 may be formed of any suitable material such as metal, glass, ceramic, plastic, or the like, and may be secured, sealed, or bonded together by any suitable method well known to one familiar with the art, such as fusion of the plates together, securing the plates with screws, and the like.
  • a suitable source of high pressure fluid is connected to aperture 24 from which it flows through power stream orifice 26 and emerges therefrom as a well defined high energy power stream which enters interaction chamber 28. Since this is a monostable device, its configuration and arrangement of parts is such that the power stream automatically attaches to wall 30 of interaction chamber 28 and flows through outlet passage 32. There are various ways in which this may be achieved.
  • interaction chamber 28 may be formed in relation to power stream orifice 26 such that wall 30 is closer to the stream than wall 34.
  • splitter or divider 36 may be shaped and positioned in such a manner as to direct or channel the normal flow from orifice 26 into outlet passage 32.
  • One familiar with the art can readily determine and form the various elements so that the device will be monostable.
  • Control fluid orifices 38 and 40 are provided in opposition to one another at the interaction chamber.
  • the power stream emerging from orifice 26 automatically flows through outlet passage 32 but can be deflected to flow through outlet passage 42 by a control fluid flow from orifice 38. Since this is a monostable device the power stream will continue to flow through outlet passage 42 only as long as a control fluid flow is available through orifice 38. When this control fluid flow ceases, the power stream will revert to its stable condition and flow through outlet passage 32.
  • Control fluid is provided to the device through inlet signal aperture 44.
  • Inlet aperture 44 is also connected to fluid delay line 46 which is an elongated fluid passage.
  • the other end of delay line 46 is connected to control orifice 40.
  • Vents 48 and 50 provide entrainment flow as the power stream flows through either outlet passage 32 or outlet passage 42 as is readily understood by one familiar with the art.
  • a suitable source of high pressure fluid is connected to aperture 24 and will emerge from orifice 26 into interaction chamber 28 as a power stream.
  • the power stream will automatically lock-on to wall 30 and pass into outlet passage 32.
  • outlet passage 32 would be connected to ambient although it may be connected to some utilization device when desired.
  • control orifice 40 is formed with a somewhat larger cross section than that of orifice 38. As noted hereinabove, that portion of the signal which passes through delay line 46 will be delayed by the length of time that it takes the signal to traverse the delay line. It is seen, therefore, that the duration of the power stream passing through outlet passage 42 can be accurately and precisely controlled by the length of delay line 46.
  • Curve 54 of FIGURE 3 illustrates the typical outlet pulse received through outlet passage 42 regardless of the duration of input signal 52.
  • inlet signal 52 may be a continuous signal as illustrated, or may be a pulsed signal while the outlet will be pulse 54 or a series of such pulses equal in number to the interruptions of inlet signal 52.
  • the only limitation of the device is that the inlet signal must be of at least the same duration as the desired outlet pulse, that is the duration of the passage of a portion of the inlet signal through the delay line, otherwise the duration of the outlet pulse would be equal to the duration of the inlet signal and would be controlled solely by control fluid flow issuing from control orifice 38.
  • the duration of the outlet pulse will be approximately 0.002 second when the device is operated with air.
  • FIGURE 4 another embodiment of the present invention is illustrated.
  • the device shown is substantially the same as that described in connection with FIGURE 2, except that the delay line is replaced with a fluid resistor 56 and a fluid capacitor 58.
  • the resistorcapacitor combination is connected in series, and is connected to inlet signal aperture 44 at one end and to control orifice 40 at the other end.
  • a fluid resistor may be an orifice or an elongated restriction in the line while a fluid capacitor is an enclosure having a large volume for collecting fluid.
  • a fluid pulse device comprising:
  • first control means communicating with said inlet means positioned to deflect said power stream from that outlet passage in which the stream is stable to the other of said outlet passages,
  • delay means having one end connected to said inlet means and the other end to said second control means for delaying a portion of said signal for a period at least as long as said duration.
  • first and second control means comprise two control fluid orifices positioned downstream from said means for issuing a fluid power stream on opposite sides of and substantially perpendicular to said power stream.

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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)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Fluid-Pressure Circuits (AREA)
US550284A 1966-05-16 1966-05-16 Fluid pulse device Expired - Lifetime US3461898A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55028466A 1966-05-16 1966-05-16

Publications (1)

Publication Number Publication Date
US3461898A true US3461898A (en) 1969-08-19

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Application Number Title Priority Date Filing Date
US550284A Expired - Lifetime US3461898A (en) 1966-05-16 1966-05-16 Fluid pulse device

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US (1) US3461898A (de)
CH (1) CH464578A (de)
DE (1) DE1600419A1 (de)
GB (1) GB1160825A (de)
NL (1) NL6706761A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529612A (en) * 1968-02-23 1970-09-22 Honeywell Inc Pulse frequency converter
US3552414A (en) * 1968-01-24 1971-01-05 Garrett Corp Pulsating fluid pressure frequency rectifier
US3570514A (en) * 1968-09-17 1971-03-16 Garrett Corp Fluidic characteristic sensor
US3621167A (en) * 1969-12-02 1971-11-16 Gen Motors Corp Piston switch controlled by fluid amplifier with time delay
US3712324A (en) * 1970-01-26 1973-01-23 Johnson Service Co Fluidic accelerometer
US11739517B2 (en) 2019-05-17 2023-08-29 Kohler Co. Fluidics devices for plumbing fixtures

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016066A (en) * 1960-01-22 1962-01-09 Raymond W Warren Fluid oscillator
US3185166A (en) * 1960-04-08 1965-05-25 Billy M Horton Fluid oscillator
US3228410A (en) * 1963-09-30 1966-01-11 Raymond W Warren Fluid pulse width modulation
US3232095A (en) * 1962-03-23 1966-02-01 Moore Products Co Pneumatic measuring apparatus
US3266510A (en) * 1963-09-16 1966-08-16 Sperry Rand Corp Device for forming fluid pulses
US3276464A (en) * 1965-10-21 1966-10-04 Bowles Eng Corp Fluid pulse width modulator
US3320966A (en) * 1964-12-31 1967-05-23 Elmer L Swartz Fluid oscillator
US3331379A (en) * 1963-05-31 1967-07-18 Romald E Bowles Weighted comparator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016066A (en) * 1960-01-22 1962-01-09 Raymond W Warren Fluid oscillator
US3185166A (en) * 1960-04-08 1965-05-25 Billy M Horton Fluid oscillator
US3232095A (en) * 1962-03-23 1966-02-01 Moore Products Co Pneumatic measuring apparatus
US3331379A (en) * 1963-05-31 1967-07-18 Romald E Bowles Weighted comparator
US3266510A (en) * 1963-09-16 1966-08-16 Sperry Rand Corp Device for forming fluid pulses
US3228410A (en) * 1963-09-30 1966-01-11 Raymond W Warren Fluid pulse width modulation
US3320966A (en) * 1964-12-31 1967-05-23 Elmer L Swartz Fluid oscillator
US3276464A (en) * 1965-10-21 1966-10-04 Bowles Eng Corp Fluid pulse width modulator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552414A (en) * 1968-01-24 1971-01-05 Garrett Corp Pulsating fluid pressure frequency rectifier
US3529612A (en) * 1968-02-23 1970-09-22 Honeywell Inc Pulse frequency converter
US3570514A (en) * 1968-09-17 1971-03-16 Garrett Corp Fluidic characteristic sensor
US3621167A (en) * 1969-12-02 1971-11-16 Gen Motors Corp Piston switch controlled by fluid amplifier with time delay
US3712324A (en) * 1970-01-26 1973-01-23 Johnson Service Co Fluidic accelerometer
US11739517B2 (en) 2019-05-17 2023-08-29 Kohler Co. Fluidics devices for plumbing fixtures
US11987969B2 (en) 2019-05-17 2024-05-21 Kohler Co. Fluidics devices for plumbing fixtures

Also Published As

Publication number Publication date
DE1600419A1 (de) 1970-10-01
NL6706761A (de) 1967-11-17
GB1160825A (en) 1969-08-06
CH464578A (de) 1968-10-31

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