A kind of aggregate rotating magnetic field device

Abstract

The present invention provides a polymerized rotating magnetic field device, including a cylindrical shell, a fixed disk and a rotating disk arranged in the shell, wherein the fixed disk is fixedly connected in the cylindrical shell, a shaft rod is vertically arranged at the center of the fixed disk, and six electromagnetic coils are fixedly connected with the center of the fixed disk as a dot to form a three-phase star circuit connected to a power supply; an iron powder glue layer is arranged on the fixed disk, and the iron powder glue layer is used for magnetic conduction and covering the gaps between the components in the enclosure of the fixed disk; the rotating disk has a bearing seat arranged at the center, the bearing seat is connected to the shaft rod of the fixed disk, and a plurality of permanent magnetic rings are fixedly connected with the center as a dot array on the rotating disk, and an iron powder glue filling layer is arranged on the rotating disk. The present invention has the advantages of a small body, low cost, and an average surface magnetic induction intensity of not less than 1500 Gauss, and is suitable for making physical therapy and health care products for use in families and small clinics.

Description

Technical Field

[0001] The invention belongs to the technical field of biomagnetism and rotating magnetic field, and in particular is a polymerized rotating magnetic field device suitable for home and outdoor use. Background Art

[0002] Biomagnetic research has found that when the magnetic field intensity is sufficient and reaches a certain rotation speed, the internal magnetic flux of the human body's cells changes, inducing a strong current, and then a more significant physiological effect can be produced. The high-intensity magnetic field rotation therapy machine developed by the Peking University Tumor Physics Technology Research Center directly hits the lesion through the magnetic lines of force generated by the dual magnetic field rotation, corrects the disordered state of the human body's biomagnetic field and bio-aura, relieves or eliminates pain, and breaks through the fact that drug therapy cannot take effect quickly, and has the therapeutic advantages of treating multiple diseases. The permanent magnet variable speed rotation therapy device of Chinese patent 2015107449798 includes two sets of mirror-symmetrical permanent magnets, which keep the permanent magnets rotating horizontally. The two sets of permanent magnets are connected to the connector with opposite magnetic poles, so that the magnetic lines of force of the two sets of permanent magnets are more concentrated, but it is not suitable for miniaturization. Chinese Patent 2016104718975 discloses a magnetic field combination structure and a rotating magnetic therapy machine, in which guide magnets are provided at the ends of two adjacent magnetic blocks with opposite polarities, so that the ends of the two adjacent magnetic blocks with opposite polarities form a closed magnetic field to reduce magnetic field loss, but the assembly also has the problem of being too large in size. Summary of the invention

[0003] Aiming at the problem that the existing gyromagnetic equipment is large in size, high in cost and not conducive to promotion, the present invention provides a miniaturized rotating magnetic field device suitable for home use, which has small size and excellent magnetic therapy effect.

[0004] The technical solution of the present invention is: a converging rotating magnetic field device, comprising a cylindrical shell, a fixed disk and a rotating disk arranged in the shell,

[0005] The fixed disk is fixedly connected in the cylindrical shell, and a fence is arranged on the outer edge of the fixed disk. A shaft is vertically arranged at the center of the fixed disk. Six core holes are arranged in an array with the center of the fixed disk as a dot. The iron core holes are fixedly connected to the electromagnetic coils. The six electromagnetic coils are respectively connected in pairs to form a single-phase circuit that enters from the head end of one electromagnetic coil and exits from the head end of another electromagnetic coil. The three single-phase circuits formed are then connected to form a three-phase star circuit and connected to the power supply; an iron powder glue layer is arranged on the fixed disk, and the iron powder glue layer is used for magnetic conduction and covering the gaps between the components in the fixed disk enclosure;

[0006] The rotating disk has a bearing seat at the center, and a fence is arranged along the outer edge of the rotating disk. The bearing seat is connected to the fixed disk shaft rod. A plurality of permanent magnet rings are fixedly connected to the rotating disk with the center as a dot array. The outer periphery of the permanent magnet ring is provided with an annular mineral powder rubber ring with a thickness of 0.5 to 3 cm. An iron powder rubber filling layer is arranged on the rotating disk, and the iron powder rubber filling layer is used for magnetic conduction and covering the gaps between the components in the rotating disk fence.

[0007] The fixed disk and the iron powder glue layer are provided with six ventilation holes in a dot array with the center as a circle, and the ventilation holes are arranged between two adjacent electromagnetic coils.

[0008] Another technical solution of the present invention is: a concentrated rotating magnetic field device, comprising a housing, a small asynchronous motor installed inside the housing, and a rotating disk.

[0009] The rotating disk has an axial hole at the center, which is fixedly connected to the motor shaft. A number of permanent magnet rings are fixedly connected to the rotating disk in a circular array with the center as a dot. An annular mineral powder rubber ring with a thickness of 0.5 to 3 cm is sleeved on the outer circumference of the permanent magnet ring. An iron powder rubber filling layer is provided on the rotating disk, which is used for magnetic conduction and covering the gaps between the components in the rotating disk enclosure.

[0010] For the above two solutions, further,

[0011] The rotating disk is fixedly connected with a plurality of leveling tubes in a dot array with the center as a circle. The leveling tubes are located at the edge of the rotating disk surface and are arranged between adjacent permanent magnetic rings for installing leveling weights to adjust the dynamic balance of the rotating disk.

[0012] The annular mineral powder rubber ring is formed by mineral powder glue, and the mineral powder glue is obtained by stirring and mixing the following materials in the following mass ratio:

[0013] Tourmaline powder of 1000-2000 mesh, meteorite particles of 60-120 mesh, rutile powder of 400-1000 mesh, jade particles of 60-120 mesh, crystal particles of 60-120 mesh, tremolite powder of 400-1000 mesh, silane coupling agent and polymer in a mass ratio of (1-3): (2-5): 20:30:10:20:0.5: (21-30).

[0014] The iron powder glue layer is formed by iron powder glue, and the iron powder glue is obtained by stirring and mixing the following materials in the following mass ratio:

[0015] 60-400 mesh refined iron powder, 400-1000 mesh germanium stone powder, 400-1000 mesh rutile powder, 400-1000 mesh tremolite powder, silane coupling agent and polymer in a mass ratio of (45-70):10:10:10:0.5:(21-30).

[0016] The rotating disk is made of titanium alloy or electrical pure iron. An electrical pure iron plate layer is arranged on the upper surface of the rotating disk. The thickness of the electrical pure iron plate layer is 2-5 mm. The height of the rotating disk enclosure is 1-6 cm.

[0017] A jade plate group is arranged at the position of the shell corresponding to the rotating disk. The jade plate group is formed by a number of small jade plates fixedly connected to the shell. The materials of the small jade plates include tourmaline, germanium, rutile, zirconite, crystal, and jade. The small jade plates made of crystal are symmetrically arranged.

[0018] It also includes a front baffle, which is installed on the shell and located in front of the rotating disk. The front baffle is made of mineral powder glue using a vibration molding process. The thickness of the front baffle is 3 to 10 mm. A number of tourmaline beads and meteorite beads are fixedly connected to the front baffle; it also includes a number of energy stone beads, which are arranged adjacent to the jade plate group.

[0019] The permanent magnet ring has an N pole outward or a N, S, N, S symmetrical four-pole arrangement.

[0020] The beneficial effect of the present invention is that, at the outer circle of several permanent magnetic rings on the rotating disk, an isolation layer is first made of an annular mineral powder rubber ring, and the remaining space is filled with iron powder glue to form an iron powder glue layer, the iron powder glue layer together with the enclosure forms a magnetic conductive path, the iron powder glue layer can replace magnetic conductive materials such as silicon steel sheets and pure iron, and can also greatly improve the magnetic field strength under the same spatial conditions; among them, the iron powder glue, mineral powder glue, and jade plate assembly all use the heating effect of the motor or electromagnetic coil after being energized to stimulate the far infrared rays of jade and energy minerals, and promote the physical therapy effect with double-line radiation; the present invention has the advantages of a small body, low cost, and an average surface magnetic induction intensity of not less than 1500 gauss, and is suitable for making physical therapy health care products for use in homes and small clinics. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a rotating disk according to Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a fixed disk according to Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of Example 3 of the present invention.

[0026] 1. Three-phase asynchronous motor; 2. Shaft; 3. Rotating disk; 4. Fixed disk; 5. Cylindrical shell; 6. Permanent magnet ring; 7. Leveling tube; 8. Bearing; 9. Ring-shaped mineral powder rubber ring; 10. Iron powder rubber layer; 11. Meteorite beads; 12. Electromagnetic coil; 13. Ventilation holes; 14. Pure iron plate; 15. Jade plate assembly; 16. Energy stone beads; 17. Tourmaline beads; 31. Rotating disk iron powder rubber filling layer. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 1 , 2 As shown in FIG. 3 , a polymerized rotating magnetic field device is made of stainless steel and has a cylindrical shell 5 with an outer diameter of 219 mm and a length of 80 mm; a fixed disk 4 and a rotating disk 3 are arranged axially in the shell 5.

[0029] A fence is arranged along the outer edge of the fixed disk 4, and a shaft 2 is vertically arranged at the center of the fixed disk 4. There are six core holes in the array with the center of the fixed disk 4 as a dot, and the electromagnetic coil 12 is fixedly connected to the core hole. The six electromagnetic coils 12 are arranged in a ring in the deep groove of the fixed disk along the order of W1, W2, W3, W4, W5, and W6, and W1 and W4, W3 and W6, and W5 and W2 are connected to form three series circuits in an end-to-end manner, respectively, the front coil enters from the head end, and the rear coil enters from the tail end, and then connected to form a star connection. , a rotating magnetic field is formed by controlling a three-phase frequency conversion circuit; the six coils are sequentially passed with a lag of π / 3 electrical angle, and the magnetic field of the electromagnetic coil 12 is rotated to link the rotating disk in front of it to rotate nearly synchronously, and the magnetic field behind it has a certain magnetic force promoting effect on the permanent magnet 6 in front. An iron powder glue layer 10 is provided on the fixed disk 4, and the iron powder glue layer 10 is used for magnetic conduction and covering the gaps between the components in the fixed disk enclosure, thereby increasing the magnetic field strength by 10% to 30%; an inner enclosure can also be set at the center of the fixed disk to enclose the electromagnetic coil between the two enclosures;

[0030] The rotating disk 3 is made of electrical pure iron and has an outer circumference of 190, an inner wall of 180mm, and an annular deep groove of 20-40mm. A bearing 8 with an outer diameter of 35mm is arranged in the center, and the bearing 8 is connected to the fixed disk shaft 2. Three permanent magnet rings 6 made of neodymium iron boron N40 with an outer diameter of 60mm, a thickness of 20-40mm, and an N pole facing outward are fixedly connected near the outer ring of the rotating disk 3 with the center as a dot array. The outer periphery of the permanent magnet ring 6 is provided with an annular mineral powder rubber ring 9 with a thickness of 0.5-3cm. A rotating disk iron powder rubber filling layer 31 is provided on the rotating disk 3. The rotating disk iron powder rubber filling is used for magnetic conduction and covering the gaps between the components in the rotating disk enclosure to increase the magnetic field strength by 10%-30%. 6-9 leveling tubes 7 are also arranged near the outer ring and between adjacent permanent magnet rings 6. The heavier side must be under the rotating body for gradual adjustment to achieve the purpose of adjusting the dynamic balance of the rotating disk.

[0031] The housing 5 is provided with a jade plate group 15 at a position corresponding to the rotating disk. The jade plate group is formed by a plurality of small jade plates fixedly connected to the housing. The materials of the small jade plates include tourmaline, germanium stone, rutile, zirconite, crystal, and jade. The crystal small jade plates are symmetrically arranged. A plurality of energy stone round beads 16 are also provided, which are arranged adjacent to the jade plate group 15.

[0032] The isolation layer formed by the annular mineral powder rubber ring forms a magnetic conductive circuit through the 5mm thick electrical pure iron plate and the periphery of the iron powder glue, so that the magnetic lines of force on the N-pole surface can rise significantly, thereby improving the magnetic induction intensity of the action surface; the iron powder glue is used to cover the middle part (middle hole) and the peripheral area of ​​the six electromagnetic coils 12 as a whole, forming a common magnetic conductive circuit. The magnetic lines of force entering (entering) a certain electromagnetic coil pass through the surrounding iron powder glue and the electrical pure iron plate at the bottom as a circuit, which can also greatly reduce the length of the air gap or increase the magnetic flux density.

[0033] The annular mineral powder rubber ring in this scheme is formed by mineral powder glue, and the mineral powder glue is obtained by stirring and mixing the following materials in a mass ratio, and the mass ratio is (1-3): (2-5): 20: 30: 10: 20: 0.5: (21-30) 1000-2000 mesh tourmaline powder, 60-120 mesh meteorite particles, 400-1000 mesh rutile powder, 60-120 mesh jade particles, 60-120 mesh crystal particles, 400-1000 mesh tremolite powder, silane coupling agent and polymer; the iron powder glue layer is formed by iron powder glue, and the iron powder glue is obtained by stirring and mixing the following materials in the following mass ratio, the mass ratio is (45-70): 10: 10: 10: 0.5: (21-30) 60-400 mesh refined iron powder, 400-1000 mesh germanium stone powder, 400-1000 mesh rutile powder, 400-1000 mesh tremolite powder, silane coupling agent and polymer. The annular mineral powder rubber ring and iron powder rubber layer are used to form the permanent magnet 6 and the electromagnetic coil 12 in an integral polymerization manner, and the good magnetic conductivity of the outer periphery is used to significantly improve the positive magnetic field of the permanent magnet and the magnetic density of the electromagnetic coil. The basic process of using polymers, minerals and iron powder to make polymers still belongs to the category of artificial synthetic stone. The configuration of curing agent, accelerator, silane coupling agent and other materials can refer to the current technology. Mineral powder glue 9. Tourmaline, germanium, rutile, zirconite, crystal and jade in iron powder glue have the characteristics of generating infrared rays when heated; the needle-like fiber structure of tremolite can significantly improve the physical indicators of polymers; meteorites contain cosmic dark energy and magnetism of outer space, and the active magnetic energy contained can stimulate a variety of active peptides in the human body, thereby regulating physiological functions; iron powder is added to polymers to form good magnetic conductivity with particle combination structure; rutile is a typical metal oxide semiconductor mineral with unique properties in photocatalysis; zirconite is a green-ink fine-grained porphyry with ferromagnetism and N monopole magnetic characteristics, and can also spontaneously radiate far-infrared waves; crystal health care has almost formed a crystal therapy theory, and it is common sense that it generates frequency vibrations when heated.

[0034] In this scheme, a plurality of N poles are arranged outward, or a four-pole arrangement of N, S, N, S symmetric poles is used to generate a rotating magnetic field for the human body at the cylindrical end surface. The speed of the permanent magnet 6 is set to 0-4200 rpm, and the rotation time on the human body is generally 15-60 minutes, which can quickly produce the effect of promoting blood circulation and removing blood stasis.

[0035] Example 2

[0036] A polymerized rotating magnetic field device comprises a shell, a small three-phase asynchronous motor 1 installed inside the shell, and a rotating disk 3, wherein the three-phase asynchronous motor 1 has four poles and a power of 250 to 400 watts, and the rotating disk 3 is made of titanium alloy material, the annular groove depth is set to 30 mm, the annular width is 55 mm, and an axial hole is arranged in the center, wherein an electrical pure iron plate layer is arranged on the upper surface of the rotating disk, and the thickness of the electrical pure iron plate layer is 2-5 mm, the rotating disk axial hole is fixedly connected to the motor shaft, and two permanent magnet rings with an outer diameter of 50 mm and a thickness of 40 mm are fixedly connected to the rotating disk in a circular point-symmetrical manner, and an annular mineral powder rubber ring with a thickness of 0.5 to 3 cm is sleeved on the outer periphery of the permanent magnet ring, and an iron powder rubber filling layer is arranged on the rotating disk, and the iron powder rubber filling layer is used for magnetic conduction and covering the gaps between the components in the rotating disk enclosure, and the rotating disk 3 can adjust the speed within 0-2900 rpm when the motor is controlled by a frequency converter. A jade plate group is arranged at the position of the rotating disk corresponding to the shell. The jade plate group is formed by a number of small jade plates with a width of 2-6cm and a thickness of 6-15mm fixedly connected to the shell. The materials of the small jade plates include tourmaline, germanium, rutile, zirconite, crystal, and jade. The small jade plates made of crystal are arranged symmetrically, and far-infrared rays are radiated to the human body that contacts it under heating conditions, so as to improve the therapeutic effect with double-line effect.

[0037] Example 3

[0038] like Figure 1As shown, the present invention has the condition that the minerals are automatically heated by electrical components. Jade and energy minerals can use heat energy to generate far infrared rays that are beneficial to the human body at a temperature above 32 degrees. It also includes a front baffle plate 15 with a thickness of 3-10mm, which is made of mineral powder glue using a vibration molding process, installed on the shell, and located on the front side of the rotating disk. 24 tourmaline round beads 17 with a diameter of 6-12mm and 8 meteorite round beads 11 are bonded on the front baffle plate with mineral powder glue 9 to form a polymer structure with round heads protruding outside, and hot wind is used to excite tourmaline and generate strong far infrared rays; it also includes a number of energy stone round beads 16, which are bonded with mineral powder glue 9 at the front end of the ring near the jade plate group, and in the middle of the body of the shell, round beads with a particle size of 10-18mm made of energy minerals are also used. They are also bonded to the shell 5 by drilling holes first and then inlaying round beads to form a far infrared ray emission source. On the front end plate and the housing 5, the hole is first rotated and then the jade round beads are bonded. From the material selection, the focus is formed relative to each other by symmetrical bonding, at least the same color mineral should keep the angle symmetry or diagonal, and pay attention to the aesthetics of the process decoration. Crystal minerals have stronger thermoelectricity. When they are used as jade plate group 15 and symmetrically arranged on the end, they have better physical therapy effect on human body. The above structure forms a stronger far infrared emission system on the front of the equipment. How to utilize natural minerals to improve the environment and improve the internal environment of the human body, especially utilize the far infrared rays of minerals for physical therapy, the present invention has unique heating and wind heat circulation and the characteristics that various minerals are suitable for bonding, and through the combination of minerals and regular changes, different conditions are adjusted accordingly, and there is still the necessity of further in-depth research.

Claims

1. A converging rotating magnetic field device, characterized in that: It includes a cylindrical shell, a fixed disk and a rotating disk arranged in the shell. The fixed disk is fixedly connected in the cylindrical shell, and a fence is arranged on the outer edge of the fixed disk. A shaft is vertically arranged at the center of the fixed disk. Six core holes are arranged in a dot array with the center of the fixed disk as a circle. The electromagnetic coils are fixedly connected to the core holes. Two of the six electromagnetic coils are connected to each other to form a single-phase circuit that enters from the head end of one electromagnetic coil and exits from the head end of another electromagnetic coil. The three single-phase circuits are then connected to form a three-phase star circuit and connected to the power supply. An iron powder glue filling layer is arranged on the fixed disk, and the iron powder glue filling layer is used for magnetic conductivity and covering the gaps between the components in the fixed disk enclosure. The rotating disk has a bearing seat at the center, a fence is arranged on the outer edge of the rotating disk, the bearing seat is connected to the fixed disk shaft, a plurality of permanent magnet rings are fixedly connected to the rotating disk with the center as a dot array, and an annular mineral powder rubber ring with a thickness of 0.5 to 3 cm is sleeved on the outer periphery of the permanent magnet ring. An iron powder rubber filling layer is arranged on the rotating disk, and the iron powder rubber filling layer is used for magnetic conduction and covering the gaps between the components in the rotating disk fence; The fixed disk and the iron powder glue filling layer are provided with six ventilation holes in a dot array with the center as a circle, and the ventilation holes are arranged between two adjacent electromagnetic coils; The rotating disk is fixedly connected with a plurality of leveling tubes in a circle array with the center as a dot. The leveling tubes are located at the edge of the rotating disk and are arranged between adjacent permanent magnetic rings for installing leveling weights to adjust the dynamic balance of the rotating disk. The annular mineral powder rubber ring is formed by mineral powder glue, and the mineral powder glue is obtained by stirring and mixing the following materials in the following mass ratios, the mass ratios being (1-3): (2-5): 20:30:10:20:0.5: (21-30) of 1000-2000 mesh tourmaline powder, 60-120 mesh meteorite particles, 400-1000 mesh rutile powder, 60-120 mesh jade particles, 60-120 mesh crystal particles, 400-1000 mesh tremolite powder, silane coupling agent and polymer; The iron powder glue filling layer is formed by iron powder glue, which is obtained by stirring and mixing the following materials in the following mass ratios: 60-400 mesh refined iron powder, 400-1000 mesh germanium stone powder, 400-1000 mesh rutile powder, 400-1000 mesh tremolite powder, silane coupling agent and polymer in the mass ratio of (45-70):10:10:10:0.5:(21-30); the rotating disk is made of titanium alloy or electrical pure iron, and an electrical pure iron plate layer is arranged on the upper surface of the rotating disk, the electrical pure iron plate layer has a thickness of 2-5 mm, and the height of the rotating disk enclosure is 1-6 cm; A jade plate assembly is arranged at the position of the housing corresponding to the rotating disk. The jade plate assembly is formed by a plurality of small jade plates fixedly connected to the housing. The materials of the small jade plates include tourmaline, germanium, rutile, zircon, crystal, and jade. The small jade plates made of crystal are symmetrically arranged. It also includes a front baffle, which is installed on the shell and located in front of the rotating disk. The front baffle is made of mineral powder glue using a vibration molding process. The thickness of the front baffle is 3 to 10 mm. A number of tourmaline beads and meteorite beads are fixedly connected to the front baffle; it also includes a number of energy stone beads, which are arranged near the jade group plate.

2. A converging rotating magnetic field device, comprising a housing, a small asynchronous motor installed inside the housing, and a rotating disk. The rotating disk has an axial hole at its center, which is fixedly connected to the motor shaft. A plurality of permanent magnet rings are fixedly connected to the rotating disk in a dot array with the center as a circle. The outer periphery of the permanent magnet ring is sleeved with an annular mineral powder rubber ring with a thickness of 0.5 to 3 cm. The rotating disk is provided with an iron powder rubber filling layer, which is used for magnetic conduction and covering the gaps between the components in the rotating disk enclosure. The rotating disk is fixedly connected with a plurality of leveling tubes in a circle array with the center as a dot. The leveling tubes are located at the edge of the rotating disk and are arranged between adjacent permanent magnetic rings for installing leveling weights to adjust the dynamic balance of the rotating disk. The annular mineral powder rubber ring is formed by mineral powder glue, and the mineral powder glue is obtained by stirring and mixing the following materials in the following mass ratios, the mass ratios being (1-3): (2-5): 20:30:10:20:0.5: (21-30) of 1000-2000 mesh tourmaline powder, 60-120 mesh meteorite particles, 400-1000 mesh rutile powder, 60-120 mesh jade particles, 60-120 mesh crystal particles, 400-1000 mesh tremolite powder, silane coupling agent and polymer; The iron powder glue filling layer is formed by iron powder glue, which is obtained by stirring and mixing the following materials in the following mass ratios: 60-400 mesh refined iron powder, 400-1000 mesh germanium stone powder, 400-1000 mesh rutile powder, 400-1000 mesh tremolite powder, silane coupling agent and polymer; The rotating disk is made of titanium alloy or electrical pure iron, and an electrical pure iron plate layer is arranged on the upper surface of the rotating disk. The thickness of the electrical pure iron plate layer is 2-5 mm, and the height of the rotating disk enclosure is 1-6 cm; A jade plate assembly is arranged at the position of the housing corresponding to the rotating disk. The jade plate assembly is formed by a plurality of small jade plates fixedly connected to the housing. The materials of the small jade plates include tourmaline, germanium, rutile, zircon, crystal, and jade. The small jade plates made of crystal are symmetrically arranged. It also includes a front baffle, which is installed on the shell and located in front of the rotating disk. The front baffle is made of mineral powder glue using a vibration molding process. The thickness of the front baffle is 3 to 10 mm. A number of tourmaline beads and meteorite beads are fixedly connected to the front baffle; it also includes a number of energy stone beads, which are arranged near the jade group plate.

3. The aggregate rotating magnetic field device according to claim 1 or 2, characterized in that: The permanent magnet ring has an N pole facing outward or a N, S, N, S symmetrical quadrupole arrangement.

Images