US3521794A - Ammonia pump - Google Patents

Ammonia pump Download PDF

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Publication number
US3521794A
US3521794A US657603A US3521794DA US3521794A US 3521794 A US3521794 A US 3521794A US 657603 A US657603 A US 657603A US 3521794D A US3521794D A US 3521794DA US 3521794 A US3521794 A US 3521794A
Authority
US
United States
Prior art keywords
pump
piston
liquid ammonia
electromagnetic
ammonia
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
US657603A
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English (en)
Inventor
Dingeman Bijl
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.)
R Q O HOLDING CO Inc
Original Assignee
GAF Corp
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 GAF Corp filed Critical GAF Corp
Application granted granted Critical
Publication of US3521794A publication Critical patent/US3521794A/en
Assigned to R Q O HOLDING COMPANY INC reassignment R Q O HOLDING COMPANY INC ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GAF CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/02—Details of liquid circulation
    • G03D3/06—Liquid supply; Liquid circulation outside tanks
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D7/00—Gas processing apparatus

Definitions

  • This invention relates to an electromagnetic pump for supplying an intermittent quantity of liquid ammonia to a diazo developing machine.
  • the pump inclu-des a slidable piston adapted to be actuated by the armature of an electromagnet.
  • the coil of the electromagnet is intermittently energized solely by a capacitor discharge circuit responsive to a selective microswitch, the latter of which is controlled by operation of the developing machine.
  • This invention relates to electromagnetic pumps and, in particular, to an improved electromagnetic ammonia pump for periodically dispensing predetermined quantities of liquid ammonia from a container.
  • the novel and improved electromagnetic liquid ammonia pump according to the present invention overcomes the foregoing and other disadvantages encountered in the prior art, by providing a pump which avoids vaporlock of the liquid ammonia, and which will assure an adequate supply of ammonia to the developing machine in response to a machine actuated electrical circuit energizing the pump.
  • the present pump incorporates an electromagnetic coil which is periodically energized through a charged capacitor, by the operation of the developing machine.
  • a magnetic armature which is slidably positioned within the pump will be actuated and in turn impart fluid-pumping motion to a piston member so as to ⁇ dispense liquid ammonia from a container to the diazo developing machine.
  • Another object of the present invention is to provide an electromagnetic liquid ammonia pump responsive to a charged capacitor which periodically energizes the elec tromagnetic coil of the pump for predetermined intermittent liquid ammonia feed.
  • a further and more specific object of the present invention is to provide a novel and improved variable displacement electromagnetic pump which is energized by a capactiance electrical circuit, and which is adapted to periodically convey predetermined quantities of liquid ammonia from a container to a diazo developing machine.
  • the pump assembly 1 includes an elongate tubular member 2 formed of a nonferro-magnetic material, such as thermoplastic.
  • the bottom portion of the tubular member 2 may be crimped inwardly as shown at 3, so as to provide clamping support for an internal piston sleeve 4.
  • a hollow stainless steel plug 5 which is locked thereto by a pin 6, seals the bottom of tubular member 2.
  • the bottom wall 7 of plug 5 includes an aperture 8 for the passage of liquid ammonia.
  • wall 7 provides for a valve seat 9 adapted to support and seat a stainless steei check ball valve 10.
  • an electromagnetic coil assembly or solenoid generally designated by reference numeral 11 encompasses the tubular member 2 and is fastened thereto.
  • the coil assembly 11 is encased in a suitable plastic housing 12 which provides access for an electrical conduit 13 adapted to connect the coil assembly with an electrical circuit generally designated by reference numeral 14.
  • the lower end of plastic housing 12 may include sealing surfaces 15 which cooperate in sealing relationship with a cork or stopper 16 of an ammonia supply container 17.
  • a generally cylindrical ferroemagnetic armature core 18 is positioned so as to be slidable along the longitudinal axis of the tubular member 2.
  • Armature core 18 is connected by means of an elongated Wire 19 to a hollow piston 20.
  • Piston 20 which may be formed of stainless steel, is loosely slidable along the longitudinal axis of tubular member 2, and is supported by internal piston sleeve 4.
  • the upper portion of piston 20 and the lower end of armature core 1S may have steel cross-pins extending therethrough, about which the ends of connecting wire 19 may be wound.
  • Piston 20 includes a bottom wall portion 21 which is adapted to be supported on steel plug 5 when the piston is in its lowermost position in tubular member 2.
  • Bottom wall portion 21 includes an aperture 22 for the passage of liquid ammonia.
  • the inner surface of wall portion 21 provides for a valve seal 23 adapted to seat a stainless steel ball check valve 24.
  • tubular member 2 At the upper end of tubular member 2, the latter may include internal threads adapted to cooperatively engage the threads of a hollow set screw 25 -which may be manually threaded into or out of the tubular member 2 and thereby determine the displacement of the piston.
  • the electrical circuit 14 for the pump assembly 1 includes a source of electrical power 26.
  • a suitable resistor 27, diode 28, and capacitor 29 are connected in series to the source of power 26, across a single-pole two-way switch 30.
  • capacitor 29, relative to electrical power source 26 is the electromagnetic coil assembly 11 of the pump 1.
  • tubular member 2 In order to place the pump assembly 1 into operation, it is inserted into supply container 17 which contains a quantity of liquid ammonia.
  • the lower portion of tubular member 2 extends down into the liquid ammonia, while the upper end thereof may have a suitable conduit (not shown) attached thereto for conveying pumped liquid ammonia to a developing machine under a pressure head which normally fills the tubular member 2. with ammonia.
  • Switch 30 may be a microswitch which is adapted to be actuated by a cam (not shown) attached to a rotating member of the developing machine.
  • a cam not shown
  • the capacitor 29 is discharged across electromagnetic coil assembly 11.
  • armature core 18 will be instantaneously displaced upwardly until stopped by set screw 25.
  • hollow piston 20 will move with armature core 18, by virtue of being fastened thereto, a quantity of liquid ammonia in the upper portion of tubular member 2 will be forced through the hollow set screw 25 into the developing machine.
  • the amount of ammonia conveyed into the developing machine is proportional to the displacement stroke of the armature core 18.
  • microswitch 30 is moved between contact points 30a and 30h resulting from operation of the developing machine and rotation of the control cam on the machine.
  • Another aspect of the present pump construction is 4 that it permits some deflection of tubular member 2 during operation without detrimental effect on the action of the pump.
  • electrical circuit means including capacitance storage discharge means for energizing said coil, whereby during such energization and solely in response to such discharge, said vertical armature and said hollow piston are lifted upwardly so as to dispense liquid material from the top of said tube.
  • An electromagnetic pump as defined in claim 2, wherein said displacement limiting means comprises a hollow set screw threaded into the upper end portion of said tube.
  • a capacitor adapted to be charged by said source of electrical current, when said coil is deenergized
  • said circuit means including a selectively operable single-pole two-way microswitch for connecting said capacitor to said source of electrical current to charge the capacitor while concurrently maintaining said coil in a deenergized condition, and means for periodically operating said microswitch whereby said charged capacitor means is discharged across said coil so as solely to energize the latter to raise the armature link and piston through a single fluid pumping stroke thereof.
  • said stopper having a vertical hole the wall of which fits said tubular member and holds the pump in an upright position in the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Details Of Reciprocating Pumps (AREA)
US657603A 1967-08-01 1967-08-01 Ammonia pump Expired - Lifetime US3521794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65760367A 1967-08-01 1967-08-01

Publications (1)

Publication Number Publication Date
US3521794A true US3521794A (en) 1970-07-28

Family

ID=24637889

Family Applications (1)

Application Number Title Priority Date Filing Date
US657603A Expired - Lifetime US3521794A (en) 1967-08-01 1967-08-01 Ammonia pump

Country Status (8)

Country Link
US (1) US3521794A (enrdf_load_stackoverflow)
JP (1) JPS4815162B1 (enrdf_load_stackoverflow)
BR (1) BR6801002D0 (enrdf_load_stackoverflow)
CH (1) CH485120A (enrdf_load_stackoverflow)
DE (1) DE1703919C3 (enrdf_load_stackoverflow)
FR (1) FR1573791A (enrdf_load_stackoverflow)
GB (1) GB1219608A (enrdf_load_stackoverflow)
NL (1) NL6810832A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102610A (en) * 1976-09-03 1978-07-25 John Taboada Constant volume seal-free reciprocating pump
US4487340A (en) * 1982-07-16 1984-12-11 Shaffer Frank E Adjustable metering oil pump
US4597697A (en) * 1982-07-16 1986-07-01 Shaffer Frank E Adjustable metering oil pump
US4768595A (en) * 1986-04-07 1988-09-06 Marathon Oil Company Oil recovery apparatus using an electromagnetic pump drive
US5014885A (en) * 1987-12-15 1991-05-14 Waeschle Maschinenfabrik Gmbh Apparatus for feeding bulk material
US5271532A (en) * 1990-04-19 1993-12-21 Bernard Jumel Hand pump utilizing press fit components for sealing and closure
US5277341A (en) * 1991-01-29 1994-01-11 Conceptair Anstalt Device for spraying a fluid by means of a pump that is actuated repeatedly by a solenoid
US5417258A (en) * 1991-12-13 1995-05-23 Conceptair Anstalt Rechargeable device for spraying a fluid
US20060151544A1 (en) * 2005-01-07 2006-07-13 Greenwald Technologies Llc Disposable integrated bag and pump
US20090266849A1 (en) * 2005-01-07 2009-10-29 Shlomo Greenwald Disposable Integrated Bag and Pump
US20110139827A1 (en) * 2005-01-07 2011-06-16 Shlomo Greenwald Disposable Pump

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49132738U (enrdf_load_stackoverflow) * 1973-03-14 1974-11-14
JPS5774915A (en) * 1980-10-28 1982-05-11 Sanaroo Koueki Kk Pushbutton switch and method of producing same
JPS62147228U (enrdf_load_stackoverflow) * 1986-03-11 1987-09-17
GB2326984A (en) * 1997-07-01 1999-01-06 Olusola Olumide Akindele Oni Fluid pump with magnetic operation
US6595756B2 (en) * 2001-09-07 2003-07-22 Medtronic Minimed, Inc. Electronic control system and process for electromagnetic pump

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US950411A (en) * 1908-03-06 1910-02-22 Hampton K Smith Liquid-dispensing apparatus.
US2410692A (en) * 1943-06-17 1946-11-05 Safety Car Heating & Lighting Liquid discharging device
US2524645A (en) * 1946-11-13 1950-10-03 Airkem Inc Pump
US2587123A (en) * 1948-06-29 1952-02-26 Dunning Color Corp Film advancing mechanism in slide film projectors
US2752453A (en) * 1950-10-09 1956-06-26 Westinghouse Electric Corp Circuit interrupter and counter therefor
US2804241A (en) * 1951-09-15 1957-08-27 Gen Motors Corp Flow control meter
US3000321A (en) * 1959-09-23 1961-09-19 Gen Motors Corp Electromagnetic plunger pumps
US3193158A (en) * 1960-07-11 1965-07-06 Lopater Benno Windshield-washer device constituted by a reser voir with pump
US3200591A (en) * 1963-09-30 1965-08-17 Itt Polarized solenoid actuating system
US3302582A (en) * 1964-03-14 1967-02-07 Eberspaecher J Electromagnetic pump

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US950411A (en) * 1908-03-06 1910-02-22 Hampton K Smith Liquid-dispensing apparatus.
US2410692A (en) * 1943-06-17 1946-11-05 Safety Car Heating & Lighting Liquid discharging device
US2524645A (en) * 1946-11-13 1950-10-03 Airkem Inc Pump
US2587123A (en) * 1948-06-29 1952-02-26 Dunning Color Corp Film advancing mechanism in slide film projectors
US2752453A (en) * 1950-10-09 1956-06-26 Westinghouse Electric Corp Circuit interrupter and counter therefor
US2804241A (en) * 1951-09-15 1957-08-27 Gen Motors Corp Flow control meter
US3000321A (en) * 1959-09-23 1961-09-19 Gen Motors Corp Electromagnetic plunger pumps
US3193158A (en) * 1960-07-11 1965-07-06 Lopater Benno Windshield-washer device constituted by a reser voir with pump
US3200591A (en) * 1963-09-30 1965-08-17 Itt Polarized solenoid actuating system
US3302582A (en) * 1964-03-14 1967-02-07 Eberspaecher J Electromagnetic pump

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102610A (en) * 1976-09-03 1978-07-25 John Taboada Constant volume seal-free reciprocating pump
US4487340A (en) * 1982-07-16 1984-12-11 Shaffer Frank E Adjustable metering oil pump
US4597697A (en) * 1982-07-16 1986-07-01 Shaffer Frank E Adjustable metering oil pump
US4768595A (en) * 1986-04-07 1988-09-06 Marathon Oil Company Oil recovery apparatus using an electromagnetic pump drive
US5014885A (en) * 1987-12-15 1991-05-14 Waeschle Maschinenfabrik Gmbh Apparatus for feeding bulk material
US5271532A (en) * 1990-04-19 1993-12-21 Bernard Jumel Hand pump utilizing press fit components for sealing and closure
US5277341A (en) * 1991-01-29 1994-01-11 Conceptair Anstalt Device for spraying a fluid by means of a pump that is actuated repeatedly by a solenoid
US5417258A (en) * 1991-12-13 1995-05-23 Conceptair Anstalt Rechargeable device for spraying a fluid
US20060151544A1 (en) * 2005-01-07 2006-07-13 Greenwald Technologies Llc Disposable integrated bag and pump
US7578419B2 (en) * 2005-01-07 2009-08-25 Greenwald Technologies, Llc Disposable integrated bag and pump
US20090266849A1 (en) * 2005-01-07 2009-10-29 Shlomo Greenwald Disposable Integrated Bag and Pump
US7896202B2 (en) 2005-01-07 2011-03-01 Shlomo Greenwald Disposable integrated bag and pump
US20110139827A1 (en) * 2005-01-07 2011-06-16 Shlomo Greenwald Disposable Pump
US8196781B2 (en) 2005-01-07 2012-06-12 Intelligent Coffee Company, Llc Disposable pump

Also Published As

Publication number Publication date
JPS4815162B1 (enrdf_load_stackoverflow) 1973-05-12
DE1703919C3 (de) 1975-07-03
CH485120A (de) 1970-01-31
BR6801002D0 (pt) 1973-01-18
GB1219608A (en) 1971-01-20
FR1573791A (enrdf_load_stackoverflow) 1969-07-04
DE1703919A1 (de) 1972-03-23
NL6810832A (enrdf_load_stackoverflow) 1969-02-04
DE1703919B2 (de) 1974-11-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: R Q O HOLDING COMPANY INC, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GAF CORPORATION;REEL/FRAME:004006/0585

Effective date: 19820526

Owner name: R Q O HOLDING COMPANY INC 111 WEST 2ND ST JAMESTOW

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GAF CORPORATION;REEL/FRAME:004006/0585

Effective date: 19820526