US3533428A - Fluidic element - Google Patents

Fluidic element Download PDF

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Publication number
US3533428A
US3533428A US766927A US3533428DA US3533428A US 3533428 A US3533428 A US 3533428A US 766927 A US766927 A US 766927A US 3533428D A US3533428D A US 3533428DA US 3533428 A US3533428 A US 3533428A
Authority
US
United States
Prior art keywords
base plate
recesses
passages
cover plate
fluidic element
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
US766927A
Other languages
English (en)
Inventor
Manfred Rudle
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.)
Hoerbiger Ventilwerke GmbH and Co KG
Original Assignee
Hoerbiger Ventilwerke GmbH and Co KG
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 Hoerbiger Ventilwerke GmbH and Co KG filed Critical Hoerbiger Ventilwerke GmbH and Co KG
Application granted granted Critical
Publication of US3533428A publication Critical patent/US3533428A/en
Anticipated expiration legal-status Critical
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
    • F15C1/02—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]
    • Y10T137/2229—Device including passages having V over T configuration

Definitions

  • the invention relates to a fluidic element for pneumatic controls, particularly to a wall-attachment element or amplifier, comprising a base plate wherein passages are recessed, and a cover plate providing airtight covering for the passages.
  • Fluidic elements of this type are known to be made of glass or plastic plates, with passages recessed in the base plate generally by etching or milling, whereupon the cover plate is applied either by gluing or by thermal welding of the two plates under pressure.
  • the thermal welding process requires considerable pressure.
  • air bubbles are liable to be produced which jeopardize the solidity of the connection and are occasionally responsible for leakages in the passages.
  • the invention consists in a fluidic element for pneumatic controls, comprising a base plate, fluid passages recessed in the base plate, and a cover plate attached to the base plate and covering the passages so as to provide an airtight seal, the base plate presenting in addition to the passages further recesses which are open in the direction of the cover plate, narrow webs being provided separating the passages from the recesses.
  • the cover plate may be attached to the base plate by thermal welding or by gluing of the two plates under pressure.
  • the recesses in the base plate occupy the whole of the remaining surface of the base plate between the fluid passages. Only the webs separating the passages from the recesses and marginal webs surrounding the recesses on the periphery of the base plate remain.
  • Air vents for the recesses leading from the recesses to the outside of the fluidic element may be provided in the base plate and/or in the cover plate for the purpose of preventing air included in the recesses during the manufacture of the fluidic element from deforming the plates softened by heating, during the cooling stage, since the underpressure produced by cooling is allowed to diminish via the air vents.
  • the air vents also serve for the evacuation of the leakage air into the open, thereby preventing the leakage air from penetrating into other passages where it might jeopardize the proper operation of the fluidic element.
  • At least part of the webs remaining on the base plate may engage in groove-shaped recesses of the cover plate.
  • This design serves to facilitate the assembly of the two plates and to avoid deformation of the webs when the two plates are pressed together.
  • the sealing of the passages is thereby improved and penetration of plastic materials into the said passages impeded.
  • FIG. 1 shows a plan view of the base plate of the fluidic element according to the invention with the cover plate removed;
  • FIG. 2 shows a cross-sectional view of the entire fluidic element along line Il-II of FIG. I;
  • FIG. 3 shows a sectional view taken along line III-III of FIG. I of another variant of the fluidic element according to the invention.
  • the fluidic element which in the embodiment of the invention illustrated is a so-called wall-attachment amplifier, comprises a base plate I wherein fluid passages 2 are recessed and covered by means of a cover plate 3 applied to the base plate I so as to provide an airtight seal of the fluid passages.
  • the fluid such as air, for example, admitted through a fluid inlet 4 flows in the direction indicated by the arrows through the fluid passages 2 and emerges therefrom via one of two fluid outlets 5 or 6.
  • the two control inlets provided are designated by reference numbers 7 and 8.
  • the fluid passages 2 are recessed into the base plate I generally made of glass or plastics, by milling or etching, whereupon the cover plate 3 is laid upon it and welded together thermally with the base plate 1 under pressure.
  • the cover plate 3 presents an even surface by means of which it rest upon the webs 10.
  • groove-shaped recesses 12 are provided in the base plate 1, in which the webs l0 engage.
  • the invention is applicable not only to wall-attachment am- 7 plifiers as illustrated by way of example in the drawing, but is to no less advantage also suitable for use in connection with fluid dynamic devices or pure fluid elements of other design comprising a base plate and a cover plate, such as in connection with so-called turbulence amplifiers.
  • a fluidic element for pneumatic controls comprising a base plate, fluid passages recessed in the base plate, and a cover plate attached under pressure to the base plate and covering the passages so as to provide an airtight seal, the base plate having in addition to the fluid passages further recesses occupying essentially all of the remaining surface of the base plate which are open in the direction extending towards the cover plate and isolated from a fluid circuit of the element, narrow webs provided to separate the passages from the recesses, only said webs and marginal webs surrounding the recesses on the periphery of the base plate being attached to the cover plate.
  • a fluidic element as claimed in claim 1 wherein openings are provided in the base plate in the area of the recesses thereof and, leading from the recesses to the outside of the element.
  • a fluidic element as claimed in claim I wherein grooveshaped recesses are provided in the cover plate, in which at least some of the webs on the base plate engage.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
US766927A 1967-10-13 1968-10-11 Fluidic element Expired - Lifetime US3533428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT927567A AT277694B (de) 1967-10-13 1967-10-13 Steuerelement für pneumatische Steuerungssysteme

Publications (1)

Publication Number Publication Date
US3533428A true US3533428A (en) 1970-10-13

Family

ID=3612737

Family Applications (1)

Application Number Title Priority Date Filing Date
US766927A Expired - Lifetime US3533428A (en) 1967-10-13 1968-10-11 Fluidic element

Country Status (7)

Country Link
US (1) US3533428A (de)
AT (1) AT277694B (de)
CH (1) CH470593A (de)
DE (1) DE1802341A1 (de)
FR (1) FR1586288A (de)
GB (1) GB1208374A (de)
SE (1) SE336089B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110140A (en) * 1976-12-15 1978-08-29 Johnson Controls, Inc. Method of making fluid system circuit board
US4188977A (en) * 1976-12-15 1980-02-19 Johnson Controls, Inc. Fluid system circuit board
US4283497A (en) * 1979-01-24 1981-08-11 Samson Helfgott Microbiological systems
WO1992021884A1 (en) * 1991-06-07 1992-12-10 Aker Subsea As Hydraulic circuit board
US20120186682A1 (en) * 2009-07-23 2012-07-26 Airbus Operations Gmbh Fluid actuator for producing a pulsed outlet flow in the flow around an aerodynamic body, and discharge device and aerodynamic body equipped therewith

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304749A (en) * 1980-02-22 1981-12-08 Peter Bauer Method for mass production assembly of fluidic devices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110140A (en) * 1976-12-15 1978-08-29 Johnson Controls, Inc. Method of making fluid system circuit board
US4188977A (en) * 1976-12-15 1980-02-19 Johnson Controls, Inc. Fluid system circuit board
US4283497A (en) * 1979-01-24 1981-08-11 Samson Helfgott Microbiological systems
WO1992021884A1 (en) * 1991-06-07 1992-12-10 Aker Subsea As Hydraulic circuit board
US20120186682A1 (en) * 2009-07-23 2012-07-26 Airbus Operations Gmbh Fluid actuator for producing a pulsed outlet flow in the flow around an aerodynamic body, and discharge device and aerodynamic body equipped therewith
US8844571B2 (en) * 2009-07-23 2014-09-30 Airbus Operations Gmbh Fluid actuator for producing a pulsed outlet flow in the flow around an aerodynamic body, and discharge device and aerodynamic body equipped therewith

Also Published As

Publication number Publication date
FR1586288A (de) 1970-02-13
DE1802341A1 (de) 1969-05-29
SE336089B (de) 1971-06-21
CH470593A (de) 1969-03-31
AT277694B (de) 1970-01-12
GB1208374A (en) 1970-10-14

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