US3586024A - High gain monostable fluidic switching device - Google Patents

High gain monostable fluidic switching device Download PDF

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Publication number
US3586024A
US3586024A US3586024DA US3586024A US 3586024 A US3586024 A US 3586024A US 3586024D A US3586024D A US 3586024DA US 3586024 A US3586024 A US 3586024A
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US
United States
Prior art keywords
control
fluid
receiver
chamber
interaction chamber
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
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English (en)
Inventor
John J Tuzson
James R Vaughn
Cecil D Oglesby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Borg Warner Corp
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Borg Warner Corp
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Publication of US3586024A publication Critical patent/US3586024A/en
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Assigned to BORG-WARNER CORPORATION, A DE CORP. reassignment BORG-WARNER CORPORATION, A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE AS OF DEC. 31, 1987 Assignors: BORG-WARNER AUTOMOTIVE, INC., A DE CORP.
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F15C1/002—Circuit elements having no moving parts for controlling engines, turbines, compressors (starting, speed regulation, temperature control or the like)
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/69—Fluid amplifiers in carburetors
    • 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]
    • Y10T137/218—Means to regulate or vary operation of device
    • Y10T137/2185—To vary frequency of pulses or oscillations
    • 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
    • Y10T137/2245—Multiple control-input passages

Definitions

  • ABSTRACT A high gain monostable fluid amplifier serves as a metering valve in which a fluid stream can be deflected from [54] HIGH GAIN MONOSTABLE FLUID: SWTCHING a primary receiver to an alternate receiver by means of control DEVICE pulses. The frequency and duration of the control pulses pro- 8 Gain, 4 Drawing Figs. vide means for varying the amount of fluid deliveredto the alternate receiver.
  • Auxiliary control slots employed in the m- [52] U.S.Cl 137/81-5, teraction region provide rapid response to the presence and 261/36 absence of a control pulse and provide sharp cutotf when [5 l] IIEL Cl witching from the auxiliary receiver to the receiver of Search
  • the control 510s are arranged to oppose attachment in 261/36 the primary receiver when a control pulse is present and to assist wall attachment in the primary receiver in the absence [56] References cued of a control pulse.
  • the metered fluid is UNlTED STATES PATENTS liquid and the control fluid is gas, for example, a liquid fuel 3,386,709 6/ 1968 Drayer 137/815 X metered by an air signal.
  • the present invention relates generally to fluid logic elements and more particularly to a digital-type amplifier.
  • Fluid amplifier devices in general, have the capability of selectively deflecting a fluid stream among alternate receivers, in response to the application of fluid pressure signals. It is an object of the present invention to provide a fluid amplifier for metering the fluid delivered to a selected receiver in accordance with a fluid pressure control signal. A further object is to provide a fluid amplifier which substantially excludes flow to a selected receiver in the absence of a control signal. A further object of the invention is to provide a fluid amplifier in which the behavior of the fluid stream is closely controlled by the fluid pressure control signal which may be applied in the form of pulses of varying duration or frequency. A still further object is to provide a fluid amplifier in which a relatively high energy fluid stream such as a liquid can be controlled by a relatively low energy control signal such as air.
  • a still further object is to provide a fluid amplifier for metering a fluid stream to alternate receivers in which the receivers are subjected to substantially different pressure conditions.
  • An additional object is to provide a fluid amplifier for metering liquid fuel delivered to a negative pressure region, such as the intake system of an internal combustion engine, by means of a control signal such as air pulses corresponding to the speed and load of the engine.
  • FIG. 1 is a plan view of an amplifier according to the present invention, with portions removed to reveal the internal passages therein;
  • FIG. 2 is a fragmentary section view taken along the line 2-2 of FIG. 1;
  • FIG. 3 is a fragmentary section view taken along the line 3-3 of FIG. I;
  • FIG. 4 is a plan view similar to FIG. 1, of an alternate embodiment of the fluid amplifier of the present invention.
  • the body of switching device 10 may include a stack of plates 11, 12, 13 of a fluid impervious material such as plastic, in which the various fluid passages described hereinafter are formed.
  • the plates are secured to each other as by cap screws 15 to form a fluid impervious body.
  • a fluid interaction chamber 14 is defined in part by walls l6, 17 in plate 12 and by the inner surfaces 18, 19 of plates 11 and 13.
  • a first receiver duct 21 extends from interaction chamber 14 sharing the common wall 16 and having the spaced wall 22.
  • First receiver duct 21 terminates in the first outlet port 23.
  • a second receiver duct 24 is defined in part by the wall portions 26, 27, 28 and extends from the interaction chamber 14 to the second outlet port 29.
  • a control chamber 31 is formed in plate 12 and communicates with interaction chamber 14 by means of a control nozzle 32 extending transversely through wall 16.
  • a supply chamber 33 includes a power nozzle 34 extending substantially parallel to wall 16 and opening into interaction chamber 14 opposite first receiver duct 21.
  • An ambient chamber 36 and nozzle 37 are arranged oppositely to control chamber 31 and nozzle 32 and communicate with interaction chamber 14 through wall portion 17
  • a group of control slots 38 here shown as four in number, open through wall 16 into interaction chamber 14 at an angle with respect to power jet 34.
  • Control slots 38 act as auxiliary control nozzles aiding in switching flow between receivers 21 and 24.
  • An auxiliary control channel 39 is defined in part by wall portions 41, 42 and communicates with control slots 38.
  • auxiliary control channel 39 also communicates with control chamber 31, with first outlet port 23 and with the common attachment wall 16.
  • auxiliary channel 39 is here shown as a single continuous slot formed in bottom plate 1 I, however, the channel may be formed in plate 12 if desired, or a pair of channels may be formed in plates 11 and 13 if desired.
  • Auxiliary channel 39 need not be a single continuous passage, but may be in the form of separate channels communicating control slots 38 with other portions of the device.
  • control slots 38 be connected to the control chamber 31.
  • control jets issue from control nozzle 32 and from the connected control slot 38 which then functions as a supplementary or auxiliary control nozzle.
  • the supplementary jet issuing from the control slot 38 provides a bubble or wedge of air along the attachment wall 16 which spoils the wall attachment of the liquid jet issuing from power nozzle 34.
  • the control jet issuing from control nozzle 32 interacts with the liquid jet issuing from power nozzle 34 switching the liquid stream into receiver 24.
  • control slots 38 are connected to both the downstream portion of receiver 21 and to the control chamber 31, thus the control slots participate both in switching the stream into receiver 24 when a control pulse is initiated and in excluding the stream from receiver 24 when the control pulse is terminated.
  • the comprehensive configuration shown in the drawing may be modified if desired, in order to provide a particular level of performance. For example, single or multiple control slots may be employed depending upon the energy level of the jet issuing from power nozzle 34in proportion to the energy level of the control pulse. In other configurations, it may be desirable to connect one or more control slots to a downstream portion of receiver 21 without at the same time being connected to the control chamber 31, or some of the control slots may be connected downstream of receiver 21 while others are connected with control chamber 31.
  • the number of slots employed and their connections to other portions of the device provide means for selecting desired switching characteristics of the device.
  • a circuit employing the switching device 10 is shown schematically in FIG. 1.
  • a pulse generating apparatus 43 is connected to control chamber 31 by means of a conduit 44.
  • Pulse generating apparatus 43 may take many forms depending upon the metering function to be performed by the amplifier 10. In its simplest form pulsing apparatus 43 can be a simple OFF ON valve for regulating a fluid control pressure applied to control chamber 31. On the other hand, pulsing apparatus 43 may involve more complex apparatus for supplying a control signal in which the frequency and/or the duration of the fluid pressure pulses are regulated in accordance with a selected condition or combination of conditions.
  • Supply chamber 33 is connected to a conduit 46 and pump 47 for supplying fluid under pressure to the switching device 10.
  • First outlet port 23 is connected to a conduit 43 arranged to deliver fluid to the sump 49.
  • Second outlet port 29 is connected to a conduit 51 for delivering fluid to an alternate receptacle 53.
  • Ambient chamber 36 is vented to atmosphere by means of conduit 45. If desired, ambient chamber 36 may be connected to an adjustable source of fluid pressure for adjusting the switching bias of amplifier 10.
  • fluid such as a liquid is supplied under pressure to supply chamber 33.
  • Nozzle 34 projects a stream of fluid through interaction chamber 14 into first receiver duct 21 from which the fluid is conducted to sump 49 by means of first outlet port 23 and conduit 43.
  • the fluid stream from power nozzle 34 is directed toward first receiver duct 21. Movement of fluid in first receiver duct 21 tends to evacuate auxiliary channel 39 which in turn tends to evacuate control slots 38.
  • discharge of fluid through first outlet port 23 tends to evacuate auxiliary channel 39 and control slots 38 in the absence of a control fluid pressure in control chamber 31. Evacuation of control slots 38 tend to enhance wall attachment of the fluid stream to the wall 16 thus substantially excluding the fluid stream from second receiver duct 24.
  • the fluid is recirculated to sump 49.
  • FIG. 4 an alternate embodiment of the fluidic switching device of the present invention is shown, particularly adapted for use as a fuel metering device for an internal combustion engine.
  • the metering valve 110 is similar in many respects to the construction shown in FIG. 1, but having modifications in the second receiver duct.
  • Metering valve 1111 includes an interaction chamber 114, a first receiver duct 121, a first outlet port 123, a control chamber 131, control nozzle 132, supply chamber 133, power nozzle 134, ambient chamber 136, ambient nozzle 137, control slots 138 and auxiliary control channel 139.
  • the above named portions of the device may be similar in construction and function to those described in connection with FIG. 1, to which reference should be made for a more detailed description.
  • the wall portions 126, 128 converge toward each other forming a fluid restriction as indicated at 127.
  • second receiver duct 124 The spaced walls of second receiver duct 124 then diverge from each other as indicated by portions 156, 157, encompassing a pair of laterally spaced vent ports 159, The walls then reconverge toward each other as indicated by portions 161, 162 to form a second fluid restriction 163.
  • a fuel tank 149 and fuel pump 147 supply liquid fuel to supply chamber 133 by means of conduit 146.
  • the fuel is recirculated back to tank 149 by means of first receiver duct 121, first outlet port 123 and return conduit 148.
  • Interaction chamber 114 is vented to atmosphere or to a bias control by ambient chamber 136, nozzle 137 and conduit 145.
  • Pulse generator 143 preferably provides a series of air pressure pulses in which the frequency of the pulses is a function of engine speed and the duration of a pulse is a function of engine load. This signal is conducted to control chamber 131 by means of conduit 144 and serves to deflect fuel issuing from power nozzle 134 into second receiver duct 124.
  • Second outlet port 129 is adapted for incorporation into the intake system of an internal combustion engine where it is subjected to negative pressures ranging from a few inches of water to several inches of mercury.
  • the vent chamber 164 provides means for isolating such negative pressure conditions from the control pressure and biasing means acting in the interaction chamber.
  • a fluid amplifier device capable of controlling a liquid jet by means of a gas control pulse, comprising a body member having defined therein a fluid interaction chamber, first and second receiver ducts communicating with said interaction chamber, a power nozzle communicating with said interaction chamber and aligned with said first receiver duct adapted to project a liquid jet through said interaction chamber, a first control nozzle angularly disposed with respect to said power nozzle opening into said interaction chamber adapted to project a gas jet into said interaction chamber, and auxiliary control means including at least one auxiliary control nozzle opening into said interaction chamber spaced downstream from said first control nozzle, and an auxiliary channel communicating said auxiliary control nozzle with a downstream portion of said first receiver duct.
  • a fluid amplifier according to claim 3 including a plurality of auxiliary control nozzles opening through said common wall member into said interaction chamber.
  • a fluid amplifier including a control chamber connected to said first control nozzle, and an auxiliary channel connected to said control chamber and extending along a portion of said common wall member communicating said plurality of auxiliary control nozzles with said control chamber and with a downstream portion of said first receiver duct.
  • a fluid amplifier device including an interaction chamber, a power nozzle opening into said interaction chamber, and first and second receiver ducts extending from said interaction chamber, said interaction chamber having biasing means associated therewith for normally directing fluid flow from said power nozzle into said first receiver duct, and having pressure control means associated therewith for selectively switching fluid flow into said second receiver duct, said second receiver duct being connected to an outlet port adapted for connection to a negative pressure region, said second receiver duct including a pair of spaced sidewall portions converging toward each other defining a first fluid restrictor, said sidewall portions diverging from each other defining an isolation chamber and reconverging toward each other defining a second fluid restrictor disposed between said interaction chamber and said outlet port, isolating said negative pressure region from said biasing means and control means, said second fluid restrictor being in substantial alignment with said first fluid restrictor, said isolation chamber including a pair of laterally spaced venting ports disposed on opposite sides of a line extending through said first and second restrictors.
  • a fluid amplifier adapted for selectively delivering a measured charge of liquid fuel into said second receiver duct, said outlet port forming a portion of an air induction passage for an internal combustion engine, said isolation chamber including a pair of converging sidewall portions defining an outlet nozzle opening into said outlet port, said isolation chamber including a pair of laterally spaced venting ports arranged on opposite sides of said outlet nozzle, said venting ports and outlet nozzle providing means for pro jecting said charge of liquid fuel into said air induction passage for dispersal into an air 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Nozzles (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Feeding And Controlling Fuel (AREA)
US3586024D 1969-06-25 1969-06-25 High gain monostable fluidic switching device Expired - Lifetime US3586024A (en)

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US83636969A 1969-06-25 1969-06-25

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US3586024A true US3586024A (en) 1971-06-22

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US3586024D Expired - Lifetime US3586024A (en) 1969-06-25 1969-06-25 High gain monostable fluidic switching device

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US (1) US3586024A (enrdf_load_stackoverflow)
JP (1) JPS4836479B1 (enrdf_load_stackoverflow)
CA (1) CA928222A (enrdf_load_stackoverflow)
DE (1) DE2030014A1 (enrdf_load_stackoverflow)
FR (1) FR2047944B1 (enrdf_load_stackoverflow)
GB (1) GB1301155A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6805164B2 (en) * 2001-12-04 2004-10-19 Bowles Fluidics Corporation Means for generating oscillating fluid jets having specified flow patterns
US20090277586A1 (en) * 2006-06-05 2009-11-12 Yoshiyuki Hanada Gas Introducing Apparatus, Manufacturing Method for the Gas Introducing Apparatus and Processing Apparatus
US20120055560A1 (en) * 2010-05-13 2012-03-08 Shridhar Gopalan Fluid stream powered pulse generating fluidic oscillator
US9943863B2 (en) 2015-04-29 2018-04-17 Delta Faucet Company Showerhead with scanner nozzles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386709A (en) * 1965-09-16 1968-06-04 Gen Motors Corp Fuel system and method of operation
US3389894A (en) * 1965-10-11 1968-06-25 Alan M Binder Fuel induction device
US3467124A (en) * 1966-05-04 1969-09-16 Glass John P Fluidic device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386709A (en) * 1965-09-16 1968-06-04 Gen Motors Corp Fuel system and method of operation
US3389894A (en) * 1965-10-11 1968-06-25 Alan M Binder Fuel induction device
US3467124A (en) * 1966-05-04 1969-09-16 Glass John P Fluidic device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6805164B2 (en) * 2001-12-04 2004-10-19 Bowles Fluidics Corporation Means for generating oscillating fluid jets having specified flow patterns
US20090277586A1 (en) * 2006-06-05 2009-11-12 Yoshiyuki Hanada Gas Introducing Apparatus, Manufacturing Method for the Gas Introducing Apparatus and Processing Apparatus
US20120055560A1 (en) * 2010-05-13 2012-03-08 Shridhar Gopalan Fluid stream powered pulse generating fluidic oscillator
US8770229B2 (en) * 2010-05-13 2014-07-08 Bowles Fluidics Corporation Fluid stream powered pulse generating fluidic oscillator
US9943863B2 (en) 2015-04-29 2018-04-17 Delta Faucet Company Showerhead with scanner nozzles
US10399094B2 (en) 2015-04-29 2019-09-03 Delta Faucet Company Showerhead with scanner nozzles
US11241702B2 (en) 2015-04-29 2022-02-08 Delta Faucet Company Showerhead with scanner nozzles

Also Published As

Publication number Publication date
GB1301155A (en) 1972-12-29
DE2030014B2 (enrdf_load_stackoverflow) 1974-06-06
DE2030014A1 (de) 1971-01-07
FR2047944B1 (enrdf_load_stackoverflow) 1974-03-22
FR2047944A1 (enrdf_load_stackoverflow) 1971-03-19
JPS4836479B1 (enrdf_load_stackoverflow) 1973-11-05
DE2030014C3 (enrdf_load_stackoverflow) 1975-02-13
CA928222A (en) 1973-06-12

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Date Code Title Description
AS Assignment

Owner name: BORG-WARNER CORPORATION, A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE AS OF DEC. 31, 1987;ASSIGNOR:BORG-WARNER AUTOMOTIVE, INC., A DE CORP.;REEL/FRAME:005287/0001

Effective date: 19881122