US1270170A - Electromagnetic valve. - Google Patents

Description

J. McL. KINGSBURY.

ELECTROMAGNETIC VALVE.

APPLICATION FILED FEB. Q, I9I8.

1,270, 1 70. Patented June 18, 1918.

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WITNESS 2 1 8 J 2 gym UNITED STATES PATENT OFFICE.

JOHN MOLEAN KINGSBUEY, OF NEW YORK, N. Y.

ELECTROMAGNETIC VALVE.

Specification of Letters Patent.

Application filed February 4, 1918. Serial No. 215,848.

To all whom it may concern:

Be it known that I, JOHN MCLEAN Knees- BURY, a citizen of the United States, resid ing at 321 West 94th street, New York, in the county of New York and State of New York, have invented a new and useful Electromagnetic Valve, of which the following is a specification.

My invention relates to improvements in electromagnetically controlled valves for controlling the flow of fluids, either liquid or gaseous, under pressure and having the features herein shown and described. In many forms of electromagnetic valves in common use in which movable members are actuated by an electromagnet certain operating conditions obtain which are undesirable. Electromagnetic valves as usually constructed are not selfcontained. The valve proper with its multiplicity of packings, stufiing boxes, springs, guides, valve stem and housing with tortuous passages, is usually mounted below the operating magnet and attached to its frame.

Such construction necessitates the use of some form of'push or pull rod, or a more complicated system of levers to transmit the pull of the armature to the operating valve stem. In other words it is commercial practioe to take two complete and radically different devices, one of a purely electrical nature, the operating magnet; the other of a purely mechanical nature, the valve; attach the frame of one to the body of the other and interpose some form of operating means as indicated above.

We are familiar with the shortcomings of valves as ordinarily constructed, springs oxidize and obtain a permanent set, rubber valve bulbs and gaskets rapidly deteriorate and become leaky and stufiing boxes bind and impose undue friction. My device will not be subject to such troubles as allof the above parts are eliminated from its construction.

It will be noted that I have adapted the extremely simple design of the electromagnet to form a purely self contained electromagnetic valve, without requiring any additional parts in its construction. By causing the fluid to flow through the core opening in the winding, and if desired by making the magnet frame with jacket chambers, the fluid flow can be directed about the winding also, I thus obtain additional radiating means for dissipating the heat generated by the current in the winding.

It is well known in the art that the armature of an alternating current magnet will vibrate and chatter and that this can be prevented in several ways, one of which is to embed a copper damper in the armature adjacent to the air gap. In my valve this chattering and vibrating of the armature is prevented by the flow and pressure of the fluid in which it is submerged and surrounded.

My invention will best be understood in connection with the accompanying drawings, in which merely for purposes of illustration I have shown two forms in which my invention may be embodied and in which,

Figure 1 shows an elevation and partial section of one form of my electromagnetic valve.

Fig. 2 shows a modified form in elevation and partial section of my electromagnetic valve with a'water'jacketed frame.

Corresponding parts have the same numbers in both Figs. 1 and 2.

In the particular'form of device shown in Fig. 1, an electromagnet frame 1 is drilled and threaded to receive the armature stop 2, which is held in position b locknut 3.

Supply pipe 4 is attached to the upper threaded end, and the tube 5 to the lower threaded end of stop 2. I provide a pas which forms the valve chamber 7. The

lower end of tube 5 is threaded to receive the valve seat 8 and outlet connection 9. The armature 10 is loosel inclosed within the tube 5, thereby provi ing a free opening around it for the How of the fluid in which it is thus submerged. The armature 10 rests upon the spherical armature ball 11 of magnetic material. I have used the term armature ball for the reason, that from a magnetic standpoint this ball forms part of, andcooperates with 1 0 to make up the complete armature of the magnet. Armature ball 11 rests in turn upon valve seat 8 which is of nonmagnetic material. The upper surface of valve seat 8 may be depressed substantially as shown, so that the armature ball is directed toward its ground seat at the upper end of opening 12, and held in place upon said ground seat by its own weight and also the weight of 10, as well as by the pressure of the fluid thereon. The lower surface of armature 10 is at right angles to the longitudinal axis and is made smooth so that the armature ball 11 is free to roll thereon in finding its ground seat about opening- 12.

Although preferable for mechanical reasons, it is not necessary that, 'to the broadest aspect of my improvement, the armature be constructed in two parts. The armature 10 can be made in one piece as shown in Fig. 2, with the lower end so shaped as to properly engage the ground seat in the opening 12 of valve seat 8. It is evident that the two piece armature l0 and 11 as shown has mechanical advantages, as the ball portion 11 is free to roll to its proper seat while with the one piece construction shown in Fig. 2, it must slide to its seat.

Gone 13 is of nonmagnetic material and prevents arma'ture 10 from sticking to stop 2, due to residual magnetism in these parts.

Fig. 2 shows a modified form of my electromagnetic valve with the frame 1, inclosing winding 14, made with cored chambers 15 communicating with opening 6 thus providing means for additional circulation of the fluid about as well as through the winding to aid in dissipating the heat generated by the current in said winding. In Fig. 2 I have shown the onepiece armature 10. Stop 2 and valve seat 8 are threaded and attached to frame 1.

The operation of my electromagnetic valve is the same as that of the ordinary plunger type electromagnet, in which I utilize the plunger or armature as a valve to control the opening through the valve seat 8, for the flow of the fluid therethrough.

When an electric current is passed through the winding 14 the armature l0 and ball 11 attracted thereto is drawn up against stop 2, thus leaving the opening 12 free for the flow of the fluid therethrough.

When the current is cut off the armature returns to its seat and stops the flow.

My invention may be embodied in other forms than those shown and described, and I therefore do not limit my invention to the precise arrangement described, except in so far as it is limited by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is 5- 1. An electromagnetic valve comprising an actuating winding and an iron frame which surrounds said winding andforms part of a magnetic circuit therefor, an axial opening through said winding and frame forming a fluid chamber, a loosely fitting armature consisting of two parts, one of which is a spherical ball, both parts thereof being immersed in the fluid in said chamber and adapted to move freely therein.

2. An electromagnetic valve comprising an actuating winding, and an iron frame which surrounds said winding and forms part of a magnetic circuit therefor, an axial opening through said winding and frame forming a fluid chamber, a loosely fitting armature consisting of two parts, one of which is a spherical ball, both parts thereof being immersed in the fluid in said chamber and adapted to move freely therein, one part of the armature resting on the spherical ball part, said ball part in turn resting on the influent side of a valve seat in said chamber, and adapted to control the flow of fluid through an opening in said valve seat.

3. An electromagnetic valve with an axial opening through its winding and openings through its surrounding iron frame, said openin s forming fluid chambers, the flow of flui through said chambers cooperating with the lining of said axial opening and body of said'iron frame to dissipate the heat generated by the current -in said windin 'In witness whereof, I. hereunto subscribe my name this 29 day of J an., A. D. 1918.

J. MCLEAN KINGSBURY.

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