US3608573A - Fluidistor - Google Patents

Fluidistor Download PDF

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Publication number
US3608573A
US3608573A US796484A US3608573DA US3608573A US 3608573 A US3608573 A US 3608573A US 796484 A US796484 A US 796484A US 3608573D A US3608573D A US 3608573DA US 3608573 A US3608573 A US 3608573A
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United States
Prior art keywords
fluidistor
inlet
control chamber
flow
control
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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US796484A
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English (en)
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Per Svante Bahrton
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Individual
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Individual
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Publication of US3608573A publication Critical patent/US3608573A/en
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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
    • 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]
    • Y10T137/2087—Means to cause rotational flow of fluid [e.g., vortex generator]
    • Y10T137/2104—Vortex generator in interaction chamber 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]
    • Y10T137/2229—Device including passages having V over T configuration
    • Y10T137/2256—And enlarged interaction chamber

Definitions

  • a fluidistor of the type comprising an inlet, at least two outlets, and an intermediate passage including at least one control chamber.
  • the transition region between the inlet and the control chamber is designed to provide unstable flow to the control chamber. This increases the amplification of the device by reducing the control energy required to switch the output from one outlet to another.
  • the unstable flow to the control chamber is caused by wedgelike shoulder means projecting substantially perpendicular to the direction of flow at the transition region from inlet to control chamber.
  • the wedgelike shoulder means has a small dimension in the direction of flow as compared to the dimension perpendicular to the direction of flow.
  • the transition region from the control chamber to the outlet is also sharply defined for the same reasons.
  • PATYENTED SEP28 Ian 3 6 08 l 57 3 FLUIDISTOR The present invention relates to a fluidistor of the type comprising an inlet, at least two outlets and an intermediate passage, including at least one control chamber, each control chamber being adapted to be supplied with a control signal serving to cause a fluid passing through the fluidistor to leave it through one or more selected outlets.
  • the main object of the invention is to provide a fluidistor of the kind above specified, having such a design that its field of use will become very broad and generic.
  • Another object of the invention is to provide a fluidistor which is adapted to be used for liquids as well as for gaseous fluids.
  • a further object of the invention is to provide a fluidistor which, following no or insignificant modifications, permits the flow speed to vary within wide limits.
  • Still another object of the invention is to provide a fluidistor that can be controlled by a variety of different control means.
  • the invention has also for its purpose to provide a fluidistor pennitting a low control power to-be used for controlling the flow of a fluid passing through the fluidistor at a high energy, i.e. at a high-speed and/orata high-static pressure.
  • the fluidistor is primarily characterized in that at the transition between the inlet and said intermediate passage there is provided a restriction adapted to generate or amplify a vortex in a control chamber for the purpose of changing the direction of flow of said fluid.
  • said restriction is constituted by a rib, a flange or similar means projecting into the inlet.
  • the surface of the restriction member defining its upstream wall forms a considerable angle, preferably about 90, with the main direction of flow in the inlet, said direction being substantially parallel to'the longitudinal axis of the inlet.
  • the rib, flange or similar means in many cases it is suitable to dimension the rib, flange or similar means so that, in the main direction of the flow of the working fluid, it will have a small width as compared to its extension perpendicular to said direction of flow and to the plane in which the flow is moved when diverted from one outlet to another.
  • Another characteristic feature of the invention is that the distance between the edge of the restriction closest to the longitudinal axis of the inlet and said axis is approximately equal to the distance between said axis and the portion of the fluidistor forming a transition between a control chamber and the corresponding outlet.
  • the last-mentioned portion of the fluidistor should in turn be located upstream of the adjacent portion of the wall of the control chamber.
  • FIG. 1 is a perspective view showing a fluidistor designed according to the invention and comprising one inlet and two outlets.
  • FIG. 2 is a horizontal sectional view illustrating the flow pattern in the fluidistor of FIG. 1 when set for controlled flow through one of its two outlets.
  • Reference numeral generally designates a fluidistor here shown as comprising a block 11 with one inlet 12 and two outlets l3 and 14.
  • a fluidistor here shown as comprising a block 11 with one inlet 12 and two outlets l3 and 14.
  • two opposite wall portions of the fluidistor are presumed to consist of two parallel cover plates, one of which, identified as 110, has been shown in FIG. 1.
  • FIG. 1 also illustrates threaded holes 11' for receiving screws adapted to secure the other cover plate, not shown, to block 11.
  • a control chamber or vortex chamber 15 Between inlet 12 and each outlet 13 and 14, respectively, there is provided a control chamber or vortex chamber 15, 16.
  • Reference numerals 17 and 18 designate edges defining the transitions between the control chambers and 16, and the respective outlets 13 and 14.
  • Each control chamber has connected thereto a conduit 19 and 20, respectively, containing a valve means 21 and 22, respectively.
  • a restriction which, in the embodiment shown, is formed by two projections 23, 24 extending from two opposite walls of the inlet. The purpose of this restriction will be explained below.
  • the working fluid is introduced through inlet 12. If symmetrical conditions prevail in the two control chambers 15 and 16, i.e. if valve member 21 and 22 are both open or closed, as the case may be, it may occur that the flow of the fluid is either split between the two outlets 13 and 14 or passed quite at random through either of them. However, by setting up a pressure difference between the two control chambers it is possible positively to divert the fluid through a selected outlet. In the control chambers the passing working fluid will due to an ejector effect create a partial vacuum.
  • control chamber 15 and assuming that valve 21 in conduit 19 is closed it is obvious that the reduced pressure in said chamber will be maintained, whereas if the value is open the pressure difference will continuously be compensated.
  • the fluid surrounding the fluidistor 10 may be the controlling fluid and it may operate at the pressure of the ambient fluid which might be the atmosphere.
  • a pressure difference can be set up between the two chambers, and that this may be effected by use of any suitable means.
  • One method for creating such a pressure difference is positively to generate an excess pressure in one of the control chambers while maintaining a lower pressure in the other chamber. Said lower pressure could be that of the ambient.
  • valve 21 is closed whereas valve 22 is open. In control chamber 16 the pressure will thus be continuously compensated whereas a reduced pressure will prevail in chamber 15.
  • the projection 23 will cause a vortex generally moving in a clockwise direction as indicated by arrows.
  • the working fluid will be subjected to the influence of a component of motion directed downwardly in FIG. 2 and against the outer walls of chamber 15 and outlet 13.
  • the pressure difference be reversed, the conditions just described will instead appear in chamber 16 so that the working fluid will be switched over to outlet 14.
  • the fluidistor will function in the same general manner as a flip-flop circuit or bistable switching circuit.
  • the restriction must have such a profile, that an abrupt change in the flow pattern is caused at the transition between the inlet and the control chambers. In this way the desired vortex generation or amplification in those chambers is secured.
  • the transverse length of the restriction amounts to between 10 and 40 percent of the distance between the inner wall of the inlet and the center axis thereof.
  • control fluid may have either the same state of aggregate as the working fluid or another state of aggregate.
  • the working fluid may be either a liquid or a gas.
  • the number of outlets of the fluidistor as well as their directions may also be varied in view of the local conditions and several fluidistor units may be entirely or partially combined into a common device.
  • the fluidistor according to this invention can be controlled by means of continuous control signals as well as by means of control pulses of short duration.
  • a fluidistor having an inlet, at least two outlets and an intermediate passage containing at least one control chamber, each said control chamber being adapted to be supplied with a control signal, in the form of a control fluid flow, serving to direct a working fluid, passing through said fluidistor from said inlet to a selected outlet,
  • a fluidistor as claimed in claim 2 characterized in that said shoulder means have a small width in the main direction of flow of said working fluid as compared to its extension perpendicular to said direction of flow and to the plane in which switching takes place.
  • a fluidistor as claimed in claim 4 characterized in that said portion of said fluidistor, defining the transition between said control chamber and its related outlet, is sharply defined, comprising in edge facing the direction of working fluid flow.
  • a fluidistor as claimed in claim 4 characterized in that the transition between a control chamber and its related outlet is located upstream of the adjacent portion of the wall of said control chamber.

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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)
  • Fluid-Pressure Circuits (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Reciprocating Pumps (AREA)
  • Air-Flow Control Members (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Multiple-Way Valves (AREA)
US796484A 1968-02-06 1969-02-04 Fluidistor Expired - Lifetime US3608573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE01537/68A SE330835B (da) 1968-02-06 1968-02-06

Publications (1)

Publication Number Publication Date
US3608573A true US3608573A (en) 1971-09-28

Family

ID=20258367

Family Applications (1)

Application Number Title Priority Date Filing Date
US796484A Expired - Lifetime US3608573A (en) 1968-02-06 1969-02-04 Fluidistor

Country Status (11)

Country Link
US (1) US3608573A (da)
JP (1) JPS5132796B1 (da)
CH (1) CH485949A (da)
DE (1) DE1905963C3 (da)
DK (1) DK132906C (da)
FI (1) FI52764C (da)
FR (1) FR2001425A1 (da)
GB (1) GB1255255A (da)
NL (1) NL144372B (da)
NO (1) NO130163B (da)
SE (1) SE330835B (da)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712323A (en) * 1970-09-08 1973-01-23 Bell Telephone Labor Inc Fluidic half-adder
US3849846A (en) * 1971-06-11 1974-11-26 Fiber Industries Inc Apparatus for fluid treatment of yarn
US3994056A (en) * 1973-04-24 1976-11-30 Fiber Industries, Inc. Apparatus for fluid treatment of yarn
US4085615A (en) * 1976-11-22 1978-04-25 General Electric Company Linear flowmeter
WO1980000543A1 (en) * 1978-09-11 1980-04-03 Bowles Fluidics Corp Dual pattern windshield washer nozzle
US4373553A (en) * 1980-01-14 1983-02-15 The United States Of America As Represented By The Secretary Of The Army Broad band flueric amplifier
US20150093198A1 (en) * 2013-09-30 2015-04-02 Korea Institute Of Construction Technology Inlet of underground reservoir having multiple-stage structure
US20170108020A1 (en) * 2015-10-15 2017-04-20 Dolphin Fluidics S.R.L. Total isolation diverter valve

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1052745B (it) * 1975-12-24 1981-07-20 Aeritalia Spa Valvola deviatrice fluidica
FR2472683A1 (fr) * 1979-12-28 1981-07-03 Thomson Brandt Bascule fluidique du type bistable, et son application aux appareils electromenagers
DE102004006796A1 (de) * 2004-02-11 2005-09-22 Oase Gmbh Wasserschalter
DE102016212254B4 (de) 2016-07-05 2018-09-20 Hansgrohe Se Sanitärbrause mit Fluid-Umschaltventil
CN113266623A (zh) * 2021-05-17 2021-08-17 中国航空发动机研究院 一种单反馈通道的流体振荡器
DE102022117251A1 (de) 2022-07-11 2024-01-11 Esters-Elektronik GmbH Verfahren und Messvorrichtung zur Bestimmung einer Dichte oder eines Maßes dafür eines Fluids, Verfahren zur Bestimmung der Reinheit oder eines Maßes dafür eines Fluids, Verwendung und Fluid-Bereitstellungs-Einheit

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216439A (en) * 1962-12-18 1965-11-09 Bowles Eng Corp External vortex transformer
US3331382A (en) * 1966-05-26 1967-07-18 Billy M Horton Pure fluid amplifier
US3368577A (en) * 1964-12-04 1968-02-13 Marquardt Corp Fluid pressure amplifier
US3420253A (en) * 1965-06-09 1969-01-07 Nasa Fluid jet amplifier
US3447383A (en) * 1966-01-04 1969-06-03 United Aircraft Corp Twin vortex angular rate sensor
US3456665A (en) * 1965-05-12 1969-07-22 Bertin & Cie Fluid amplifiers
US3468326A (en) * 1967-10-19 1969-09-23 Bailey Meter Co Triggerable flip-flop fluid device
US3486520A (en) * 1967-07-26 1969-12-30 James M Hyer Deflector fluidic amplifier
US3500849A (en) * 1967-05-10 1970-03-17 Corning Glass Works Free-running oscillator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283767A (en) * 1963-05-31 1966-11-08 Ibm Jet fluid amplifier
US3276463A (en) * 1964-01-16 1966-10-04 Romald E Bowles Fluid conversion systems
US3313313A (en) * 1964-04-10 1967-04-11 Katz Silas Fluid pressure reference
FR1396853A (fr) * 1964-05-29 1965-04-23 Ibm Amplificateur à fluide
FR1434409A (fr) * 1965-02-26 1966-04-08 Pomagalski Jean Sa Dispositif de commande comprenant des variateurs de vitesse, notamment pour véhicules automobiles équipés de plusieurs roues motrices indépendantes, et chenillette comprenant un tel dispositif
US3425431A (en) * 1965-03-29 1969-02-04 American Standard Inc Control apparatus and methods

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216439A (en) * 1962-12-18 1965-11-09 Bowles Eng Corp External vortex transformer
US3368577A (en) * 1964-12-04 1968-02-13 Marquardt Corp Fluid pressure amplifier
US3456665A (en) * 1965-05-12 1969-07-22 Bertin & Cie Fluid amplifiers
US3420253A (en) * 1965-06-09 1969-01-07 Nasa Fluid jet amplifier
US3447383A (en) * 1966-01-04 1969-06-03 United Aircraft Corp Twin vortex angular rate sensor
US3331382A (en) * 1966-05-26 1967-07-18 Billy M Horton Pure fluid amplifier
US3500849A (en) * 1967-05-10 1970-03-17 Corning Glass Works Free-running oscillator
US3486520A (en) * 1967-07-26 1969-12-30 James M Hyer Deflector fluidic amplifier
US3468326A (en) * 1967-10-19 1969-09-23 Bailey Meter Co Triggerable flip-flop fluid device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712323A (en) * 1970-09-08 1973-01-23 Bell Telephone Labor Inc Fluidic half-adder
US3849846A (en) * 1971-06-11 1974-11-26 Fiber Industries Inc Apparatus for fluid treatment of yarn
US3994056A (en) * 1973-04-24 1976-11-30 Fiber Industries, Inc. Apparatus for fluid treatment of yarn
US4085615A (en) * 1976-11-22 1978-04-25 General Electric Company Linear flowmeter
WO1980000543A1 (en) * 1978-09-11 1980-04-03 Bowles Fluidics Corp Dual pattern windshield washer nozzle
US4210283A (en) * 1978-09-11 1980-07-01 Bowles Fluidics Corp Dual pattern windshield washer nozzle
US4373553A (en) * 1980-01-14 1983-02-15 The United States Of America As Represented By The Secretary Of The Army Broad band flueric amplifier
US20150093198A1 (en) * 2013-09-30 2015-04-02 Korea Institute Of Construction Technology Inlet of underground reservoir having multiple-stage structure
US9534369B2 (en) * 2013-09-30 2017-01-03 Korea Institute Of Construction Technology Inlet of underground reservoir having multiple-stage structure
US20170108020A1 (en) * 2015-10-15 2017-04-20 Dolphin Fluidics S.R.L. Total isolation diverter valve
US10071236B2 (en) * 2015-10-15 2018-09-11 Dolphin Fluidics S.R.L. Total isolation diverter valve

Also Published As

Publication number Publication date
FR2001425A1 (fr) 1969-09-26
SE330835B (da) 1970-11-30
CH485949A (de) 1970-02-15
NO130163B (da) 1974-07-15
GB1255255A (en) 1971-12-01
JPS5132796B1 (da) 1976-09-14
DE1905963A1 (de) 1969-09-04
FR2001425B1 (da) 1973-12-21
NL6901799A (da) 1969-08-08
DK132906B (da) 1976-02-23
DE1905963B2 (da) 1974-11-21
DK132906C (da) 1976-07-19
FI52764B (da) 1977-08-01
FI52764C (fi) 1977-11-10
NL144372B (nl) 1974-12-16
DE1905963C3 (de) 1982-04-01

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