GB1274276A - Improvements in fluidic systems and fluidic devices therefor - Google Patents

Improvements in fluidic systems and fluidic devices therefor

Info

Publication number
GB1274276A
GB1274276A GB4049969A GB4049969A GB1274276A GB 1274276 A GB1274276 A GB 1274276A GB 4049969 A GB4049969 A GB 4049969A GB 4049969 A GB4049969 A GB 4049969A GB 1274276 A GB1274276 A GB 1274276A
Authority
GB
United Kingdom
Prior art keywords
passage
signal
inlet
main
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
Application number
GB4049969A
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atlas Copco AB filed Critical Atlas Copco AB
Publication of GB1274276A publication Critical patent/GB1274276A/en
Expired legal-status Critical Current

Links

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]
    • Y10T137/218—Means to regulate or vary operation of device
    • Y10T137/2202—By movable element
    • Y10T137/2218—Means [e.g., valve] in control input
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)
  • Fluid-Driven Valves (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Control Of Fluid Pressure (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1,274,276. Fluid regulation; fluid-pressure servomotor systems. ATLAS COPCO A.B. Aug. 13, 1969 [Aug. 26, 1968], No.40499/69. Headings G3H and G3P. [Also in Divisions G1] The body of a fluidic device 1 has formed therein a substantially venturi-shaped main passage having inlet and outlet portions 3 and 4 respectively, and a signal passage 6, the passages being rectangular in cross-section and so disposed that the angle 7 between the signal passage 6 and the centre line of the main passage lies between 20 degrees and 60 degrees, and is preferably equal to 45 degrees. The signal passage is arranged to intersect the main passage at the minimum cross-sectional area portion 5 of the main passage and at this branch-off point the main passage cross-sectional area increases discontinuously in a direction from the inlet 3 to the outlet 4. With the above arrangement and in the absence of an impedance downstream of the outlet portion 4, flow within the inlet portion 3 adheres, inter alia, to wall 9 thereof, detaches itself from the wall at the point of intersection of the main and signal passages, and re-attaches itself to a wall 8 of the outlet portion at a point downstream of the intersection. Thus no flow enters the signal passage 6. Upon introducing an impedance downstream of portion 4, flow from the inlet portion 3 can be distributed between the portion 4 and passage 6, or diverted entirely into passage 6, Figs. 2a, 2b, 2c (not shown). Alternatively, Figs.3 and 4 (not shown), more than one signal passage may be provided. When applied to controlling a valve, Fig. 6, the device is connected to a signal source 33, an adjustable restrictor 34 and a signal responsive control 31 which may comprise a deflectable membrane to which a valve spindle is secured, the position of this spindle being determined by the state of restrictor 34 and hence by the pressure in signal passage 6.
GB4049969A 1968-08-26 1969-08-13 Improvements in fluidic systems and fluidic devices therefor Expired GB1274276A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1143468A SE327340B (en) 1968-08-26 1968-08-26

Publications (1)

Publication Number Publication Date
GB1274276A true GB1274276A (en) 1972-05-17

Family

ID=20293958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4049969A Expired GB1274276A (en) 1968-08-26 1969-08-13 Improvements in fluidic systems and fluidic devices therefor

Country Status (5)

Country Link
US (1) US3656495A (en)
JP (1) JPS4813158B1 (en)
DE (1) DE1943137B2 (en)
GB (1) GB1274276A (en)
SE (1) SE327340B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2399023A (en) * 2003-03-06 2004-09-08 Intersurgical Ltd Venturi device with exit orifice of reduced size and elongate cross-section

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164671C2 (en) * 1971-12-24 1987-10-01 Bergwerksverband Gmbh, 4300 Essen Method and device for the pneumatic control of the metering of pneumatically conveyed granular and / or dusty materials
US3830096A (en) * 1972-07-18 1974-08-20 Meidensha Electric Mfg Co Ltd A load insensitive type fluid restrictor
US4027407A (en) * 1975-11-24 1977-06-07 Kiss Sandor G Jet flow alternator
AU5368299A (en) * 1999-08-31 2001-03-26 Dct Double-Cone Technology Ag Double cone for generation of a pressure difference
US7128092B2 (en) * 1999-08-31 2006-10-31 Dct Double-Cone Technology Ag Separating arrangement for treatment of fluids
US8517350B2 (en) * 2011-08-24 2013-08-27 Franmara, Inc. Venturi apparatus for pouring and aereating beverages
US10898895B2 (en) 2018-09-13 2021-01-26 Talis Biomedical Corporation Vented converging capillary biological sample port and reservoir
US11008627B2 (en) 2019-08-15 2021-05-18 Talis Biomedical Corporation Diagnostic system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182674A (en) * 1961-07-24 1965-05-11 Sperry Rand Corp System and apparatus for producing, maintaining and controlling laminar fluid streamflow
US3232095A (en) * 1962-03-23 1966-02-01 Moore Products Co Pneumatic measuring apparatus
US3194253A (en) * 1962-06-21 1965-07-13 Pitney Bowes Inc Fluid flow control device
US3212515A (en) * 1962-07-13 1965-10-19 Giannini Controls Corp Fluid amplifier
FR1351404A (en) * 1962-08-07 1964-02-07 Snecma Aerodynamic or hydrodynamic servo-valve which can be used in particular for the steering and stabilization of rockets
US3170476A (en) * 1962-08-22 1965-02-23 Honeywell Inc Pure fluid amplifier
US3258023A (en) * 1963-04-12 1966-06-28 Romald E Bowles Pneumatic eye
US3204405A (en) * 1964-02-20 1965-09-07 Raymond W Warren Three dimensional jet vectoring system
US3468328A (en) * 1965-10-15 1969-09-23 Bowles Eng Corp Distributed amplifier
US3457935A (en) * 1966-11-28 1969-07-29 Gen Electric Fluid amplifiers
US3500846A (en) * 1966-12-30 1970-03-17 Imp Eastman Corp Fluid device
US3509897A (en) * 1967-05-05 1970-05-05 Aro Corp Fluidic logic memory element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2399023A (en) * 2003-03-06 2004-09-08 Intersurgical Ltd Venturi device with exit orifice of reduced size and elongate cross-section
GB2399023B (en) * 2003-03-06 2006-04-12 Intersurgical Ltd Improvements relating to venturi devices

Also Published As

Publication number Publication date
US3656495A (en) 1972-04-18
DE1943137B2 (en) 1974-04-25
JPS4813158B1 (en) 1973-04-25
DE1943137A1 (en) 1970-08-20
SE327340B (en) 1970-08-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees