WO1998019319A1

WO1998019319A1 - Magnetic tube and inductive devices

Info

Publication number: WO1998019319A1
Application number: PCT/US1996/017389
Authority: WO
Inventors: Clarence W. Mcqueen
Original assignee: Mcqueen Clarence W
Priority date: 1996-10-31
Filing date: 1996-10-31
Publication date: 1998-05-07

Abstract

A ferromagnetic tube with conductor windings on the outside, electrical current passing through the conductor (7) will cause a magnetic field, that if the tube is long relative to the diameter, will be largely inside. If the tube is relatively short in relation to the diameter, will flow almost totally on the outside. When ferromagnetic end caps (2) and a center post (3) are added to the tube and a conductor is wound on the center post, with the center post placed between the end caps and in the interior of the tube, electrical current passing through the conductor will cause a magnetic field that will, if the tube is long relative to the diameter, flow to the outside. If the tube is short relative to the diameter, flow will be almost totally confined within the tube.

Description

MAGNETIC TUBE AND INDUCTIVE DEVICES

BACKGROUND OF THE INVENTION

This invention relates to the positioning of magnetic fields in or around ferro magnetic tubes for applications relating to the containment of charged particles, and also to inductive devices such as transformers, fluxgate inverters and electro magnets. Enclosed magnetic fields are currently produced utilizing the Rowland

Ring principal, the magnetic bottle ,the magnetic mirror and the Tokamak or toroidal wound hollow torus. The Rowland Ring principal is used extensively in the production of core and shell type transformers.

SUMMARY OF THE INVENTION It is the object of my invention to provide a simplified method of containment and ordering of charged particles.

It is another object of my invention to provide an improved transformer by reducing the weight and cost per watt.

It is another object of my invention to reduce stray magnetic fields emanating from an inductive device and the effect of stray external magnetic fields on an inductive device.

It is another object of my invention to provide an improved inverter system by reducing flux leakage, weight of material per watt of power and cost per watt of power. The aforementioned and other objects of this invention are achieved by the utilization of ferromagnetic tubular construction.

When an electric current passes through a coil wound on the outside of a ferromagnetic tube that is long " 6 or more times" the diameter the resultant magnetic field will be on the inside of the tube.

With two caps and a center post of a ferromagnetic material added and with the conductor wound on the center post, the resultant magnetic field will be on the outside of the tube.

When an electric current passes through a coil wound on the outside of a ferromagnetic tube that is, short " less than 1-1/2 times " relative to the diameter, the resultant magnetic field will be on the outside of said tube. With two end caps and a center post of ferromagnetic material added and with the conductor wound on said center post the resulting magnetic field is almost totally enclosed within said tube. When a current carrying conductor is wound on the outside of a long ferromagnetic tube the resultant magnetic field inside said tube will impose an ordered arrangement on charged particles placed inside of said tube.

The almost complete containment of the magnetic field within the magnetic tube, when said tube is short relative to the diameter and if the current carrying conductor is wound on the center post an effective current/ E.M.F. modifier or controller is the result.

BRIEF DESCRIPTION OF DRAWINGS Figure 1 This is a drawing of the ferromagnetic core parts without attachment devices or conductor coils and is for familiarization with the core concept.

Figure 2 This is a sectional drawing "split down the center" of a long tube with the conductor coil wound on the outside of said tube, the arrows indicate the magnetic field direction.

Figure 3 This is a sectional drawing "split down the center" of a long tube with a conductor coiled on the center post and with end caps. The arrows indicate the magnetic field direction.

Figure 4 This is a sectional drawing " split down the center "of a long tube with conductor coils on the center post and also on the outside of the tube. These conductors can be the primary and secondary conductors of a transformer. Figure 5 This drawing is a short tube with a conductor coiled on the outside of the tube. The arrows indicate the magnetic field direction of this arrangement.

Figure 6 This is a sectional drawing " split down the center " of a short tube with the conductor wound on the center post. The arrows indicate the magnetic field direction for this arrangement.

Figure 7 This drawing is similar to figure 5, with the addition of a second conductor coil on the outside. This arrangement is a transformer configuration with primary and secondary coils on the outside of the tube. Figure 8 This a sectional drawing " split down the center " and is similar to figure 6 with the addition of two more conductor coils. This arrangement can be a transformer with primary and secondary coils or a flux gate with signal, power and trigger coils used primarily on an inverter system.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to figure 8. When the tube assembly is short " less than 1 1/2 times the diameter", a changing or alternating current passing through conductor coil 7 produces a changing magnetic field in the center post 3, with this magnetic field almost totally contained within a space defined by the end caps 2 and tube 1. This changing magnetic field then produces a secondary current in conductor coil (s) 9 and or 10. This action results in a transformer. End caps 2 and tube 1 also restrict stray magnetic fields from outside as well as from inside the system. This is the preferred embodiment.

DESCRIPTION OF OTHER EMBODIMENTS Referring to figure 1. This drawing shows only the ferromagnetic core parts. All core parts can be constructed from thin sheets of a ferromagnetic material. The center post 3 is in contact with the end caps 2 which are in contact with tube 1. These units come in long " 6 or more times the diameter" configuration or in short " 1 1/2 or less tines the diameter" configuration, these parts provide the magnetic field paths and the end caps and tube also provide magnetic field containment and shielding. The end caps 2 and center post 3 are not required for all configurations.

Referring to figure 2 This is a sectional drawing "split down the center" of the long configuration. When current passes through conductor coil 4 that is coiled on the outside of tube 1 , the resulting magnetic field is as indicated by the arrows and is inside of tube 1.

Referring to figure 3 This is a sectional drawing " split down the center " of the long configuration. When current passes through conductor 5 that is wound 105 on center post 3, placed as shown between end caps 2 that are in contact with the ends of tube 1 , the resulting magnetic field is as shown by the arrows and is on the outside of tube 1.

Referring to figure 4 This is a sectional drawing "split down through the center " of the long configuration. When a changing electric current is passed 110 through conductor 4 a changing magnetic field is established inside of tube 1 and produces a secondary current in conductor coil 5. Conversely , if said changing electric current is passed through conductor coil 5 , a changing magnetic field is established outside of tube 1 and produces a secondary current in conductor coil

4. Conductor 5 is insulated from contact with the end caps 2 by electrical 115 insulation "not shown".

Referring to figure 5 This is a drawing of the short configuration. Current passing through conductor coil 6 wound on the outside of tube 1 produces a magnetic field almost totally on the outside of tube 1.

Referring to figure 6 This is a sectional drawing " split down the center" of 120 the short configuration. Electric current passing through conductor 7 wound around center post 3 produces a magnetic field in center post 3 and is contained , as indicated by the arrows, by the end caps 2 and tube 1. This magnetic field is almost totally contained within the tube and end caps.

Referring to figure 7 A changing electric current passing through 125 conductor 6 wound on the outside of tube 1 produces a changing magnetic field on the outside of tube 1 which produces a secondary current in conductor 8, also coiled on the outside of tube 1. This is the short configuration.

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Claims

CLAIMS I claim:

1 ) A method of containing a magnetic field within in a tube comprising , a ferromagnetic tube ,whose length is greater than six times the diameter, with a conductor coiled on the outside of said tube.

2 ) A method of containing a magnetic field as in claim 1 comprising a ferromagnetic tube, whose length is one and one half or less times the diameter, with ferromagnetic end caps, a ferromagnetic center post and with a conductor coiled on said center post.

3 ) A method of containing a magnetic field on the outside of a tube comprising, a ferromagnetic tube, whose length is greater than six times the diameter, with two ferromagnetic end caps, a ferromagnetic center post and with a conductor coiled on said center post.

4 ) A method of containing a magnetic field as in claim 3 comprising, a ferromagnetic tube, whose length is one and one half of less times the diameter, with a conductor coiled on the outside of said tube.

5 ) An inductive device comprising, a ferromagnetic tube, whose length is one and one half or less times the diameter, two ferromagnetic end caps, a ferromagnetic center post with primary and secondary conductors coiled on said center post.