EP0084214A3 - Electromagnetic-pneumatic current to pressure transducer - Google Patents

Electromagnetic-pneumatic current to pressure transducer Download PDF

Info

Publication number
EP0084214A3
EP0084214A3 EP82305204A EP82305204A EP0084214A3 EP 0084214 A3 EP0084214 A3 EP 0084214A3 EP 82305204 A EP82305204 A EP 82305204A EP 82305204 A EP82305204 A EP 82305204A EP 0084214 A3 EP0084214 A3 EP 0084214A3
Authority
EP
European Patent Office
Prior art keywords
membrane
signal
transducer
pressure
housing
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.)
Withdrawn
Application number
EP82305204A
Other languages
German (de)
French (fr)
Other versions
EP0084214A2 (en
Inventor
Robert O. Brandt, Jr.
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.)
Brandt Industries Inc USA
Original Assignee
Brandt Industries Inc USA
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 Brandt Industries Inc USA filed Critical Brandt Industries Inc USA
Publication of EP0084214A2 publication Critical patent/EP0084214A2/en
Publication of EP0084214A3 publication Critical patent/EP0084214A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B5/00—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities
    • F15B5/003—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities characterised by variation of the pressure in a nozzle or the like, e.g. nozzle-flapper system

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
  • Magnetically Actuated Valves (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

The present invention entails a current to pressure (I/P) transducer for converting andelectric signal to a proportional pressure signal over a given span. Essentially the I/P transducer comprises a housing having a membrane with magnetic and metal properties extending across and over a seat area. An air supply inlet is provided within said housing as well as a pneumatic output port. Typically, at least a portion of the inlet air supply is directed between the seat and membrane and out the output port. The pressure of the fluid passing from the output port becomes the produced proportional pressure signal of the I/P transducer.
Wire windings are disposed within the housing about a core, and two poles of opposite polarity are disposed on opposite sides of the membrane. An input current signal directed through the wire windings results in a magnetic force acting on the magnetic membrane and effectively loading the membrane. The resulting magnetic force acting on the membrane directly affects the pressure of the pneumatic output signal since the loading of the membrane acts to restrict flow between the seat and membrane. By appropriately adjusting the I/P transducer and particularly the fluid flow therethrough, the output fluid pressure signal is maintained proportional to an input current signal directed through the wire windings.
EP82305204A 1981-10-06 1982-09-30 Electromagnetic-pneumatic current to pressure transducer Withdrawn EP0084214A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30907081A 1981-10-06 1981-10-06
US309070 1981-10-06

Publications (2)

Publication Number Publication Date
EP0084214A2 EP0084214A2 (en) 1983-07-27
EP0084214A3 true EP0084214A3 (en) 1984-01-25

Family

ID=23196544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82305204A Withdrawn EP0084214A3 (en) 1981-10-06 1982-09-30 Electromagnetic-pneumatic current to pressure transducer

Country Status (2)

Country Link
EP (1) EP0084214A3 (en)
JP (1) JPS58135416A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638830A (en) * 1985-09-27 1987-01-27 Rosemount Inc. High sensitivity magnetic actuator
US5265638A (en) * 1992-12-22 1993-11-30 Boc Health Care, Inc. Magneto-pneumatic intermittent suction device
JP3476022B2 (en) * 1993-10-15 2003-12-10 横河電機株式会社 Electric / pneumatic converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB762876A (en) * 1952-10-13 1956-12-05 France Etat A high-pressure electro-magnetically operated valve having progressive operation
FR2163246A5 (en) * 1972-09-22 1973-07-20 Bosch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB762876A (en) * 1952-10-13 1956-12-05 France Etat A high-pressure electro-magnetically operated valve having progressive operation
FR2163246A5 (en) * 1972-09-22 1973-07-20 Bosch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PROCEEDINGS OF THE NATIONAL CONFERENCE ON FLUID POWER, vol. 27, 25th-27th September 1973, Chicago, USA *

Also Published As

Publication number Publication date
JPS58135416A (en) 1983-08-12
EP0084214A2 (en) 1983-07-27

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19840926

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BRANDT, ROBERT O., JR.