IL26585A

IL26585A - Device for treating a liquid by means of a magnetic field

Info

Publication number: IL26585A
Application number: IL26585A
Authority: IL
Original assignee: Vermeiren T
Priority date: 1965-10-12
Filing date: 1966-09-27
Publication date: 1971-02-25
Also published as: CS157701B2; LU52092A1; OA02146A; CH449530A; BR6683308D0

Description

Π1Ρ ?y 7T133 7 S07 DEVICE FOR TREATING A LIQUID BY MEANS OF A MAGNETIC FIELD V The invention relates to a device for treating a liquid by means of a magnetic field, the device being provided with at least one passageway for the liquid to be treated and including means producin in a part of said passageway a magnetic field the lines of force of I which are substantially at right angles to the lengthwise direction of the passageway.

Such devices are known and are used for treating liquids that cause calcareous scale formations,and for generally reducing the corrosive action of liquids, as described for example i Israel Patents No. 3,673 of 5-10-1946 and No, 5,135 of 14-12 1949 in the name of the Applicant.

However, in the known devices, the magnetic fields are generated either by coils supplied with alternating or direct current, or by permanent magnets of a more or less usual design, for example, by straight, cylindrical or semi-cylindrical magnets.

The present invention relates to a device based on a completely new concept that brings about a saving in material and labour, while ensuring better results.

According to the present invention, the means generating the magnetic field are comprised of two magnets that extend parallel to the lengthwise direction of the passageway, the magnets being provided in the middle thereof with inwardly facing projections forming poles of opposite polarity, the ends of each of the magnets also forming poles which are of opposite polarity to that of its respective projection.

In an advantageous embodiment of the invention, the The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which: Figure 1 is a lengthwise vertical section of a pair of magnets relating to a device for treating a liquid according to the invention; Figure 2 is a plan view of the lower one of the magnets shown in Figure 1, and Figure 3 is a section through a series of magnet pairs according to the preceding Figures, said magnets being shown as they are located in a device for treating a liquid accord-* ing to the Invention the section being taken along line III— III of Figure 1.

In the various Figures, the same reference numerals relate to the same Elements* > Δ device for treating liquids by means of a magnetic field, for minimizing the corrosive action of the liquid and for preventing the formation of calcareous scale, may be comprised of a pair of permanent magnets of the kind illustrated in Figure 1· As described below, a device may comprise a plurality of magnet pairs as shown in Figure 3· Each one of the pair of magnets shown in Figure 1 is comprised of a magnetic body that extends in lengthwise direction substantially parallel to the liquid flow.

The upper magnet bears reference numeral 1, while the lower bears reference numeral 2. Each magnet has magnetic polarity at its ends and comprises, intermediate said ends a projecting part which forms a pole of opposite polarity to that of the projection of the opposite magnet. 7 / * The lower magnet 2 hae a North pole at both ends thereof and a South pole of the central projecting part. The upper magnet has a South pole at both ends thereof and a North pole at the central projecting part* The end poles of the magnets 1 and 2 are of opposite polarity such that the bodies 1 and 2 are attracted to one another by magnetic attraction. Bach end of a magnet engages the corresponding end of the other magnet which J forms a pole of opposite polarity* The ends are formed as lugs 3 and 4» hich lugs have flat surfaces engaging one another. The lugs 3 and 4 are higher than the projections 5 and 6, such that when the magnets are located adjacent to one another, with the lugs 3 and 4 engaged, there'' remains a free passage between the projections 5 and 6* The spacing between the projections 5 and 6 is however substantially smaller than the spacing between the other confronting faces of magnets 1 and 2· However, between the pair of lugs a the end of each magnet, there exists a substantial passageway through which the liquid is f¾$!$6 to pass.

The lines of force of the magnetic fields are thus sub* stantially entirely inside the magnets, with the exceptio o the short magnetic field between the projections 5 and 6. The air gap between these projections is very narrow, such that the magnetic flux may be concentrated in this air gap.

Substantially 100S& of the magnetic field is thus applied to the liquid being treated, which constitutes a savings of about 30S¾ in magnetic material compared to the usual embodi¬ ments* At the air gap, that is between the projections 5 and 6, lines' of force of the magnetic field shown in 7 are sub v.- It is to be noted that in practice, a pair of magnets such as shown in Figure 1, or a plurality of identical pairs are located inside a pipe surrounding the magnets, the magnets being disposed one against the other. This pipe is only used for retaining the magnets in position and it thus has no affect on the strength of the magnetic fields* This pipe has not been shown in the drawings. It is preferably made of non-ferromagnetic material.

The liquid passing through the device in the direction'jj¾C the arrows 8 flows through the passageway between the pairs of lugs 3 - 4; this passage is of large cross-section at the ends of the magnets, and becomes narrower between the projections 5 and 6, The pair of magnets are symmetrical relative to the transverse plane through the projections 5-6· The complete passageway between the magnets is thus shaped as a venturi, the smallest spacing being at the location of the gap between the projections 5 and 6, where the magnetic field is the strongest* The liquid velocity is thus highest at the gap, which is extremely advantageous as the efficiency of the magnetic action depends on the one hand on the field strength and on the other hand on the liquid velocity. The venturi shape minimizes the hydraulic resistance.

Due to the very high flow speed, the impurities, for example the iron oxides, are taken along by the liquid and they are thus carried through and out of the apparatus, in such a way that there is less danger of blocking the device inside the magnetic gap.

These advantages permit the use of conventional magnets^ for treating various liquids, whereas previously, for technical ' required magnetic field, the latter being a function of the electrolytic properties of the liquid to be treated.

Figure 3 shows more particularly how it is possible to make a stack or battery of magnet pairs; each pair of magnets fulfills the same purpose as described above. As shown in Figure 3» the magnets which are located back to back each belong to two different pairs* Thus, the magnets 9 and 10, have poles of like polarities at the ends thereof and also in the centre, e.g.. North poles at the ends thereof and a South pole at the centre. Since the magnet pairs are thus back to back the magnetic flux is directed more strongly towards and is concentrated in the gaps* She invention is in no way limited to the above embodiments, and many changes may be brought therein without departing from the scope of the invention as defined by the appended claims* Thus, for example, while the magnets described above are of rectangular-shaped section, they may have other geometrical shapes* Preferably, this shape should allow them to be assembled compactly into a stack as described above in Figure 3, but as stated above they may be disposed in the form of individual pairs inside a tube*

Claims

A.26585/2 WHAT IS CLAIMED IS:

1. A device for treating a liquid by means of a magnetic field, said device having at least one passageway for the liquid to be treated and means producing in a part of said passageway a magnetic field the lines of force of which are substantially at right angles to the lengthwise direction of the passageway, characterized in that the means generating the magnetic field are comprised of two magnets extending parallel to the lengthwise direction of the passageway, said magnets being provided in the middle thereof with inwardly facing projections forming poles of opposite polarity, the ends of each of said magnets also forming poles which are of opposite polarity relative to that of its respective projection.

2. A device according to Claim 1, in which the magnets are mutually engaged at their ends by Iftgs constituting their respective end poles*

3. A device for treating a liquid, substantially as hereinbefore described and illustrated in the accompanying drawings. COHEN ZEDEK AND SPISBACH Attorneys for Applicants.