Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3098635 A
Publication typeGrant
Publication dateJul 23, 1963
Filing dateFeb 13, 1961
Priority dateMar 14, 1960
Publication numberUS 3098635 A, US 3098635A, US-A-3098635, US3098635 A, US3098635A
InventorsAdolphe Delaporte Louis, Andre Denisselle Jean
Original AssigneeAdolphe Delaporte Louis, Andre Denisselle Jean
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electromagnetic valves
US 3098635 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

y 23, 1953 1.. A. DELAPORTE ETA]. 3,098,635

ELECTROMAGNETIC VALVES Filed Feb. 15, 1961 INVENTORS Lows ADOLPHE DELAPORTE.

I JEAN ANDRE DENISSELLE ATTORNEY United States Patent 3,098,635 ELECTROMAGNETIC VALVES Louis Adolphe Delaporte, 147 Rue dEstienne dOrves, Clamart, France, and Jean Andr Denisselle, 43 Blvd. Victor Hugo, Paris, France Filed Feb. 13, 1961, Ser. No. 88,793 Claims priority, application France Mar. 14, 1960 4 Claims. (Cl. 251--54) The magnetic circuit of electromagnets, chiefly of the type provided with a plunger core, is normally in contact with the atmosphere and is subjected of necessity to its action which becomes objectionable after a certain time. What is still worse, and which may occur in electromagnetic valves, is the detrimental action of corrosive and the like fluids passing through them, and it is therefore essential to protect the plunger core and the polepieces, chiefly in the case of normally closed valves.

Now, the protecting means used hitherto suffer the drawback of having a reduced efliciency.

Our invention has for its object to remove such drawbacks and it allows using in electromagnetic valves magnetic circuits made of pure iron without any special .care being required, as obtained by a perfect separation be tween such magnetic circuits and the corrosive or the like fluid.

According to our invention, the magnetic circuit is enclosed in a non-corrosive liquid bath, which is preferably non-compressible, the liquid being held back by a single very yielding diaphragm designed in a manner such that a modification in the location of the non-corrosive liquid produced by the movement of the plunger core may be compensated by a modification in the shape of the diaphragm without any stress being exerted on the latter.

Our invention has also for its object an electromagnetic valve provided with a plunger core and incorporating the above arrangement; in said valve, oil fills the space between the core and the vertical tubular member inside which the latter is shiftable so as to form a liquid column between the polepiece closing the upper end of the said tubular member and provided with a filling channel, and the diaphragm at its lower end; said diaphragm is advantageously in the shape of a deformable annular disc clamped along its outer periphery between the body of the valve and the tubular member carried by the electromagnet winding and along its inner periphery between the lower end of the core and the needle valve carried by the latter, the surface of said disc-shaped diaphragm forming an annular groove facing downwardly as long as the needle valve is .closed whereas the diaphragm is deformed by the pressure of the above-mentioned liquid column when the core rises and consequently the needle valve opens, whereby said diaphragm assumes then a downwardly annular convex shape.

It should be remarked that, if pressure is applied to the lower surface of the diaphragm, said pressure is transmitted entirely to the liquid column while the diaphragm serving as a separating member between the liquid column above it and the liquid flowing through the valve underneath it, may be very thin by reason of the equilibrium in pressure on either side thereof. During the deformation of the diaphragm, only reduced stresses arise so that the diaphragm may allow the core to execute strokes of a considerable amplitude.

We have illustrated by way of example in the accompanying drawings a preferred embodiment of our improved electromagnetic valve. In said drawings:

FIG. 1 is a vertical diametrical cross-section of the apparatus, the needle valve being shown as urged onto its seat by the spring acting on the plunger core, the electromagnet not being energized,

Patented July 23, 1963 FIG. 2 is a similar View in which the electromagnet is assumed to be energized and has produced a rise of the core which it has attracted, and consequently a rise of the needle valve.

As illustrated into the body of the valve 1 is screwed a tubular member 2 carrying outwardly the support or housing 3 of the electromagnet, the member 2 forming thus a central chimney 4 at the upper end of which is fitted the electromagnet pole-piece 5 provided with a channel 6 closed by a plug 7.

The lower, wider end of the chimney 4 forms a chamber 8 facing the chamber provided inside the valve body 1 to form the seat 9 for a needle valve 10 controlling the flow through the valve system.

The needle valve 10 is provided with an axial threaded stud through which it is screwed into the lower end of the plunger core 11 which latter is provided at its upper end with a blind bore inside of which is housed a spring 12 engaging the underside of the pole-piece 5.

A single diaphragm 13 in the shape of a very yielding annular disc is clamped along its outer periphery between a bearing surface 14 on the body 1 and a corresponding bearing surface 15 on the tubular member 2 while the central periphery of said diaphragm is clamped between the lower end of the plunger core 11 and the needle valve 10, said diaphragm having an area such that its medial annular section may form a sort of groove opening downwardly when the valve is in its normal closing position, as illustrated in FIG. '1.

The closing position of the valve corresponds to the period of non-energization of the electromagnet winding; the core 11 is then urged by the spring 12 into a position for which it holds the needle valve 10 on its seat 9 to close the valve, while the space between the diaphragm .13 and the poleapiece 5 and between the core 11 and the chimney 4 is filled with oil. The weight of the oil on the diaphragm 13 is opposed by the thrust or pressure exerted in the opposite direction by the fluid held back inside the body of the valve 1.

Upon energizat-ion of the electromagnet winding, an attraction is produced, in order to raise the core 11 which must overcome the opposing force of the spring 12 and also the very slight force required for releasing the needle valve 10 with reference to its seat 9. But simultaneously, as the valve opens and the fluid controlled thereby passes out through seat '9, the pressure until now exerted on the lower surface of diaphragm 13 by the fluid is removed. There no longer being a pressure within body 1 compensating the weight of the liquid column in the chimney 4, this liquid is urged downwardly by the rising of the core l1, so as to vacate the space above the plunger core, whereby the diaphragm 13 is deformed and assumes a reversed curvature forming a downwardly convex projection, as illustrated in FIG. 2.

It will be readily understood that the arrangement provided protects completely the pole-piece 5 and the plunger core 11 from the corrosive action of the fluid controlled by the valve both in the closed and in the open condition of the valve. Further, there is no additional stress due to the diaphragm imposed upon the electromaguet as it operates to control the valve, when the latter is open.

It should be mentioned that the arrangement is also of interest for those cases where the fluid passing through the valve is under pressure and that nothing is to be modifled in the data governing the rising movement of the needle valve, in contradistinction with the requirements of conventional diaphragm valves.

By gauging suitably the clearance between the core and the chimney surrounding it, it is possible to obtain a dashpot action which brakes the speed of operation.

Furthermore, the oil bath serves for damping the vibrations due to the application of A.C., and the noise produced upon energization by the impact of the core against the pole-piece is also considerably reduced. Furthermore, there is no risk of any impurities soiling the polepiece which impurities might lead to the production of noise and to a reduction of the attraction.

Lastly a suitable viscosity of the oil allows also braking the operative speed.

Our invention is obviously applicable to A.C. controlled relays and to all arrangements incorporating an electromagnet, chiefly an electromagnet provided with a plunger core.

What we claim is:

1. An electromagnetic valve comprising a valve body provided with a passageway for a liquid to be handled and with a seat in said passageway, a tubular member carried by said body and opening into said passageway in front of said seat, an electromagnetic winding surrounding said tubular member, a pole-piece closing the outer end of said tubular member, a plunger core adapted to slide outwardly of said valve body in said tubular member under the action of said winding when energized, with a clearance between said plunger core and the wall of the tubular member, a spring urging the plunger core away from the pole-piece, a needle valve carried by the plunger core and adapted to normally close said seat and to open said seat upon energization of the electromagnetic winding, a single, very yielding diaphragm fitted across the lower end of the tubular member between the plunger core and the inner wall of said tubular member, and a mass of non-corrosive, non-compressible liquid completely filling the tubular member above the diaphragm and the pressure of which deforms the latter when the plunger core is actuated upon energization of the electromagnet.

2. An electromagnetic valve comprising a valve body provided with a passageway for a liquid to be handled and with a seat in said passageway, a tubular member carried by said body and opening into said passageway in front of said seat, an electromagnetic windingsurrounding said tubular member, a pole-piece closing the upper end of said tubular member and provided with an axial filling port, a plunger core adapted to slide outwardly of said valve body in said tubular member under the action of said winding when energized, with a clearance between said plunger core and the wall of the tubular member, a spning urging the plunger core away from the pole-piece, a needle valve carried by the plunger core and adapted to normally close said seat and to open said seat upon energization of the electromagnetic winding, a single, very yielding diaphragm fitted across the lower end of the tubular member between the plunger core and the inner wall of said tubular member and a mass of noncorrosive, non-compressible liquid completely filling the tubular member, above the diaphragm, the pressure of which deforms the latter when the plunger core is actuated upon energization of the electromagnet.

3. An electromagnetic valve comprising a valve body provided with a passageway for a liquid to be handled and with a seat in said passageway, a tubular member carried by said body and opening into said passageway in front of said seat, an electromagnetic winding surrounding said tubular member, a pole-piece closing the upper end of said tubular member and provided with an axial filling port, a plunger core adapted to slide outwardly of said valve body in said tubular member under the action of said winding when energized, with a clearance between said plunger core and the wall of the tubular member, a spring urging the plunger core away from the pole-piece, a needle valve screwed into the plunger core and adapted to normally close said seat and to open said seat upon energization of the electromagnetic winding, a single, very yielding :annular diaphragm fitted across the lower end of the tubular member between the plunger core and the inner wall of said tubular member, the outer periphery of said diaphragm being clamped between the wall of the tubular member and the valve body and its inner periph- -ery being clamped between the cooperating ends of the plunger core and of the needle valve, and la mas of noncorrosive, non-compressible liquid completely filling the tubular member above the diaphragm, the pressure of which deforms the latter when the plunger core is actuated upon energization of the electromagnet.

4. An electrically contro led valve comprising a valve chamber having an open end, a valve seat within said chamber, a solenoid comprising a central tube, an armature longitudinally displaceable inside said tube, and an electromagnetic winding surrounding said tube, one end of said tube mounted over the open end of said chamber,

a needle valve positioned Within said chamber to cooperate ''with said valve seat and connected to one end of said armature, a single deformable watertight diaphragm disposed between the interior of said tube and said valve chamber containing the fluid to be distributed, and a body of noncompressible liquid filling entirely the volume limited by said .tube and said flexible diaphragm, said diaphragm having "a diametrical section allowing it to assume a concave or convex form, according to whether said armature is positioned at said one end of said tube or displaced by energizing said winding to the other end of said tube, said diaphragm being in continuous contact with said body of liquid.

References Cited in the file of this patent UNITED STATES PATENTS 1,992,212 Home Feb. 26, 1935 2,098,331 Bowman Nov. 9, 1937 2,350,352 Harding June 6, 1944 2,920,254 Ray Jan. 5, 1960 2,922,614 Nickells Jan. 26, 1960

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1992212 *Feb 27, 1933Feb 26, 1935Burchard E HorneSteam boiler regulator
US2098331 *Apr 21, 1934Nov 9, 1937John Bowman WilliamAutomatic station selector for radio receivers
US2350352 *Nov 8, 1941Jun 6, 1944Harding Jr JohnAeronautical fuel control valve
US2920254 *Jul 18, 1957Jan 5, 1960Gen Controls CoSolenoid device for use with gas valves
US2922614 *Jun 18, 1956Jan 26, 1960Honeywell Regulator CoHum-free solenoid device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3142790 *Jul 5, 1962Jul 28, 1964Gen Motors CorpHermetically sealed solenoid assembly
US3168242 *Nov 5, 1962Feb 2, 1965Eldima A GElectromagnetically operated temperature regulating system
US3226605 *Apr 5, 1962Dec 28, 1965Roberts Controls CompanySolenoid damping mechanism
US3231315 *Feb 3, 1964Jan 25, 1966Ford Motor CoAnti-skid braking system
US3326511 *Oct 5, 1964Jun 20, 1967Danfoss AsMagnetic valve with diaphragm sealed armature cylinder
US3329165 *Feb 10, 1965Jul 4, 1967Erich HerionSolenoid-operated multiway valves
US3399861 *Oct 22, 1965Sep 3, 1968Cadillac Gage CoElectromagnetic torque motor
US3420492 *Oct 6, 1965Jan 7, 1969IttBistable valve mechanism or the like
US3420494 *May 13, 1965Jan 7, 1969Nostorog AgElectromagnetic valve
US3424429 *Oct 23, 1965Jan 28, 1969Sterer Eng & Mfg CoSolenoid operated valve
US3446473 *May 6, 1965May 27, 1969Monsanto CoPulsed solenoid control valves
US3581815 *Feb 17, 1969Jun 1, 1971Hydril CoUnderwater connector with retrievable sealed electrical assembly
US3628566 *Feb 2, 1970Dec 21, 1971Clifford C CarseMultiple fluid control device
US3633869 *Jul 31, 1970Jan 11, 1972Danfoss AsSolenoid valve with adjustable stroke
US3670274 *Oct 6, 1970Jun 13, 1972Skinner Precision Ind IncExplosion-proof valve operator
US3711020 *Jul 6, 1970Jan 16, 1973R ZelnaHigh frequency solder paste gun
US3740019 *Dec 2, 1971Jun 19, 1973Rohe Scientific CorpZero displacement diaphragm valve
US3831615 *Aug 31, 1972Aug 27, 1974Piqua Aircraft CoElectrically controlled governors
US3955795 *Nov 15, 1973May 11, 1976Refreshment Machinery IncorporatedValve
US4826132 *Jul 21, 1988May 2, 1989Firma A.U.K. Muller Gmbh & Co. KgSolenoid valve, especially an outlet valve for infusion water
US4983941 *Nov 22, 1989Jan 8, 1991Mitsubishi Denki Kabushiki KaishaElectromagnetically operated switch
US5046745 *Sep 15, 1988Sep 10, 1991Cummins Engine Company, Inc.Constant volume protective boot
US5127625 *Feb 14, 1991Jul 7, 1992Avl Medical Instruments AgElectromagnetically actuated valve
US5265843 *May 27, 1992Nov 30, 1993Avl Medical Instruments AgElectromagnetically actuated valve
US5478045 *Jun 7, 1994Dec 26, 1995Caterpillar Inc.Damped actuator and valve assembly
US6357721Oct 7, 1999Mar 19, 2002Emerson Electric Gmbh & Co.Valve arrangement
US6609698 *Oct 25, 2000Aug 26, 2003Arichell Technologies, Inc.Ferromagnetic/fluid valve actuator
US6681800 *Jul 19, 2001Jan 27, 2004Festo Ag & Co.Control valve means and furthermore a valve suitable for use as a component thereof
US6712333 *Dec 18, 2001Mar 30, 2004Wabco Gmbh & Co. OhgValve mechanism
US6752371Jun 19, 2002Jun 22, 2004Arichell Technologies, Inc.Valve actuator having small isolated plunger
US6932316 *Jun 19, 2002Aug 23, 2005Arichell Technologies, Inc.Ferromagnetic/fluid valve actuator
US6948697 *Apr 23, 2003Sep 27, 2005Arichell Technologies, Inc.Apparatus and method for controlling fluid flow
US7069941Jun 3, 2004Jul 4, 2006Arichell Technologies Inc.Electronic faucets for long-term operation
US7156363Jun 25, 2004Jan 2, 2007Arichell Technologies, Inc.Bathroom flushers with novel sensors and controllers
US7188822Feb 20, 2004Mar 13, 2007Arichell Technologies, Inc.Enclosures for automatic bathroom flushers
US7325781Feb 20, 2004Feb 5, 2008Arichell Technologies Inc.Automatic bathroom flushers with modular design
US7383721Dec 23, 2005Jun 10, 2008Arichell Technologies Inc.Leak Detector
US7396000Jun 3, 2005Jul 8, 2008Arichell Technologies IncPassive sensors for automatic faucets and bathroom flushers
US7437778Jun 3, 2004Oct 21, 2008Arichell Technologies Inc.Automatic bathroom flushers
US7690623Jul 3, 2006Apr 6, 2010Arichell Technologies Inc.Electronic faucets for long-term operation
US7731154Jul 5, 2008Jun 8, 2010Parsons Natan EPassive sensors for automatic faucets and bathroom flushers
US7921480Jun 2, 2006Apr 12, 2011Parsons Natan EPassive sensors and control algorithms for faucets and bathroom flushers
US8042202Nov 30, 2009Oct 25, 2011Parsons Natan EBathroom flushers with novel sensors and controllers
US8276878Jun 5, 2010Oct 2, 2012Parsons Natan EPassive sensors for automatic faucets
US8376314 *Mar 1, 2007Feb 19, 2013The Subsea CompanyMethods and apparatus to exclude function fluid or seawater from solenoid armature cavities in subsea or surface solenoid valves
US8496025Apr 5, 2010Jul 30, 2013Sloan Valve CompanyElectronic faucets for long-term operation
US8505573 *Aug 1, 2011Aug 13, 2013Sloan Valve CompanyApparatus and method for controlling fluid flow
US8556228Jul 14, 2010Oct 15, 2013Sloan Valve CompanyEnclosures for automatic bathroom flushers
US8576032Jul 16, 2009Nov 5, 2013Sloan Valve CompanyElectromagnetic apparatus and method for controlling fluid flow
US8641011 *Sep 16, 2010Feb 4, 2014SVM Schultz Verwaltungs—GmbH & Co. KGSolenoid with armature having frontal recess
US8733395 *Dec 27, 2011May 27, 2014Flextronics Automotive Usa, Inc.Solenoid operated fluid control valve
US8955822Oct 1, 2012Feb 17, 2015Sloan Valve CompanyPassive sensors for automatic faucets and bathroom flushers
US20020017625 *Jul 19, 2001Feb 14, 2002Festo Ag & Co..Control valve means and furthermore a valve suitable for use as a component thereof
US20020074532 *Dec 18, 2001Jun 20, 2002Juan RoviraValve mechanism
US20020148991 *Jun 19, 2002Oct 17, 2002Kay HerbertFerromagnetic/fluid valve actuator
US20040141296 *Jan 6, 2004Jul 22, 2004Coico Patrick AnthonyStress resistant land grid array (LGA) module and method of forming the same
US20040164101 *Feb 18, 2004Aug 26, 2004Valois SasFluid dispenser
US20040164261 *Feb 20, 2004Aug 26, 2004Parsons Natan E.Automatic bathroom flushers with modular design
US20040201442 *Apr 28, 2004Oct 14, 2004Arichell Technologies, Inc.Valve actuator having small isolated plunger
US20040221899 *Jun 3, 2004Nov 11, 2004Parsons Natan E.Electronic faucets for long-term operation
US20040227117 *Feb 20, 2004Nov 18, 2004Marcichow Martin E.Novel enclosures for automatic bathroom flushers
US20060000995 *Jun 24, 2005Jan 5, 2006Arichell TechnologiesFerromagnetic/fluid valve actuator
US20110062364 *Mar 17, 2011Scherer Georg JSolenoid
US20120068096 *Aug 1, 2011Mar 22, 2012Kay HerbertApparatus and method for controlling fluid flow
US20120199766 *Aug 9, 2012Saturn Electronics & Engineering, Inc.Solenoid operated fluid control valve
DE1204485B *Oct 5, 1963Nov 4, 1965Danfoss AsMagnetventil mit Abdichtung der Ventilteile gegen die Magnetteile durch einen Schlauch
DE1235091B *Oct 5, 1963Feb 23, 1967Danfoss AsMagnetventil mit hydraulischer Bremsung
DE1237394B *Jul 11, 1964Mar 23, 1967Danfoss AsMagnetventil mit einstellbarem Hub
DE1270909B *Jul 24, 1965Jun 20, 1968Danfoss AsMagnetventil fuer Gase
DE2636814A1 *Aug 16, 1976Mar 10, 1977Spraying Systems CoMagnetventil
DE10248342A1 *Oct 17, 2002Oct 23, 2003Continental Teves Ag & Co OhgElectromagnetic valve employs magnetorheological fluid as vibration damper
DE19846226A1 *Oct 7, 1998Apr 27, 2000Emerson Electric GmbhVentilanordnung
DE19846226C2 *Oct 7, 1998Jul 11, 2002Emerson Electric GmbhVentilanordnung
EP0136473A2 *Aug 6, 1984Apr 10, 1985DEERE & COMPANYSolenoid operated valve
EP0992727A2 *Sep 28, 1999Apr 12, 2000EMERSON ELECTRIC GmbH & Co.Valve assembly
EP1217273A2 *Oct 23, 2001Jun 26, 2002WABCO GmbH & Co. OHGSolenoid valve
WO2013118050A1 *Feb 5, 2013Aug 15, 2013Elbi International S.P.A.Solenoid -valve device for controlling a fluid flow, in particular for a household appliance such as a washing machine
Classifications
U.S. Classification251/54, 251/335.1, 335/260, 251/129.17
International ClassificationH01F7/08, F16K31/06, F16K41/10, F16K41/00, H01F7/16
Cooperative ClassificationH01F7/1607, F16K31/0655, F16K41/10
European ClassificationF16K31/06C6, F16K41/10, H01F7/16A