The invention relates to a physical water treatment device, in particular water treatment for protection against limescale.
Limescale is a deposit that builds up on the walls of pipes, bathrooms, and in water appliances, and is formed by deposition of minerals present in medium-hard and hard water. The basic component of limescale is usually calcium carbonate (CaCO3).
One of the known solutions for protection against limescale deposits is physical water treatment on the electro-galvanic principle. Two electrodes of different materials according to the Beketov's series of metals are immersed in flowing water to be treated to create a difference in electrical potentials between the electrodes. The difference in electrical potentials results in the release of metal nanoparticles from the anode electrode, which perform the function of crystallization nuclei, on which the minerals present in water agglomerate into larger formations, which subsequently have a much lower tendency to deposit in the form of limescale.
The use of the electro-galvanic principle for physical water treatment is known from document SK 1272019 (U1), in which an ionic polarization unit for water treatment is presented. The polarization unit consists of a solid hollow body, which replaces part of the water supply pipe. Systems of electrodes for the electro-galvanic principle of water treatment are inside the body. At the same time, the electrodes are shaped to cause non-destructive cavitation phenomena in the flowing water, which help in the process of water galvanization by stirring up the water flow streamlines.
Another known solution for physical water treatment is the technical solution from document SK 1252019 (U1), which describes an ionic polarization device for physical water treatment. The polarization device is made as a cartridge formed by a system of electrodes, which is inserted into a solid two-chamber vessel. The two-chamber vessel is installed to the water pipeline. Water flows gradually through both chambers of the vessel, while water in the cartridge is galvanized. The electrodes differ in shape for each of the chambers, with the turbulent coupling retarder arranged at the interface between the chambers. The function of the turbulent coupling retarder is to ripple the flowing water to stir up the water flow streamlines.
The above-mentioned known solutions have the common disadvantage, i.e. they need to be installed on a pipe. This means that both known solutions have the requirement for sufficient installation space, as they are not flexible in shape. As a rule, the above-mentioned known devices are installed to the water supply pipes in places where there is enough installation space to leave them, for example at the main water shut-off valve, or on pipes in technical rooms. However, in many cases, water consumers do not have access to water supply pipeline, or do not have sufficient installation space to install the above-mentioned devices.
A partial solution to the problems of the above-mentioned background of the invention may be the invention known from document WO 2019043004 (A1), in which water treatment by means of a system of disc-shaped electrodes arranged in a row is presented. The description of the invention shows that the system of electrodes allows limited flexibility of the pipeline within which the system of electrodes is located, whereby the problem of the requirement for sufficient installation space can be solved. However, the disadvantages of the present invention are that the limited flexibility it provides is not suitable for installation in front of single household water appliances, which is generally the only place for water consumers where they can physically treat water in home environment. The inlets of water appliances are usually made up of flexible hoses, e.g. inlet hoses for washing machines, coffee machines, shower heads, etc., and which need to maintain the flexibility of water inlet pipes/hoses as much as possible.
A person skilled in the art could, at first glance, find technical information in the invention from document WO 03008342 (A1) to solve the problem of maintaining the flexibility of water inlet. The present invention serves the purpose of water treatment to remove pathogens present therein with the aid of silver or other metals with an oligodynamic effect. The invention presents that a fibre with metal with an oligodynamic effect is conducted along the inner wall of the flexible water inlet, which acts on pathogens when the water flows through the flexible inlet. In addition, a second fibre of another metal is conducted parallel to the oligodynamic fibre, with the fibres being held in parallel by plastic clamps. First, the fibres serve as a flexible member, and second, there is a difference in electrical potentials between the two parallel fibres.
On the other hand, in a detailed analysis of the invention from document WO 03008342 (A1), a person skilled in the art of physical water treatment will find shortcomings which reduce the effectiveness of the present invention. The most fundamental shortcoming is that the metal fibres are arranged to the inner wall of the flexible water inlet, so that the water of the streamlines in the middle of the water flow does not come into sufficient contact with the metal fibres at the walls of water inlet to ensure its proper treatment. In the flow treatment of water, it is essential that the flowing water be stirred up as much as possible for galvanization in the entire cross-section of the flow. The present invention does not achieve this.
The above-mentioned shortcoming consisting in insufficient disturbance of water streamlines inside the water inlet is solved by the invention from document TWM 548689 (U). The invention presents a water inlet, inside which there is a magnetic screw insert, which forces the flowing water to turbulence, thus allowing the magnetic field to act on water in the entire cross-section of the flow. The magnetic field reverses the clusters of water molecules to dissolve them into smaller units. The disadvantage of this solution is that the water inlet is not flexible, but has a permanent shape similar to “V” or “U”.
The background of the invention shows that no solution is known so far which would leave the water inlet flexible and which at the same time could physically treat the flowing water within the entire cross-section of the flow, not only at the walls of the water inlet.
The purpose of the invention is to provide a physical water treatment device which can, with maximum efficiency, treat water directly in a flexible water inlet without completely losing the flexibility of the water inlet.
The set task is solved by means of a physical water treatment device according to the invention below.
The physical water treatment device, in particular in a flexible water inlet, comprises at least one pair of electrodes for water galvanization and at least one holder into which the electrodes are inserted and which fixes the electrodes.
The core of the invention is based on the fact that the means for inserting and fixing the electrodes together with the electrodes form an integral body which has the shape adapted for insertion into a flexible water inlet. The integral body completely encloses the cavity of the flexible water inlet, with the integral body being hollow for the flow of water through it. The electrodes in the integral body form a flow-through turbulent galvanization system of electrodes.
The main advantage of the invention is that it can block the flow of water inside the flexible inlet, so that all water must flow through the galvanization system of electrodes. In addition, it is advantageous to insert it into a flexible water inlet, which protects the device from damage or theft. In addition, the device limits the flexibility of relatively small section of the flexible inlet with respect to its overall length, so that the flexible inlet does not lose its advantages.
The integral body is preferably adapted for fixed or loose insertion into a flexible water inlet. The loose insertion allows the device inside the water inlet to be moved as required by installation, but the fixed insertion protects the device from accidental falling out of the water inlet. In addition, in the case of chaining of several integral bodies in a row within a single device, the fixed insertion prevents them from moving away at any spacing. On the other hand, longer chaining close to each other can lead to a partial reduction in the flexibility of water inlet. Otherwise, the chaining of several integral bodies with arbitrary spacings, the flexibility of water inlet is preferably reduced at a minimum.
In a preferred embodiment of the device according to the invention, the electrodes of the integral body are provided with openings for the flow of water through the electrodes, with at least some of the openings being provided with stirring-up vanes. This is advantageous because the water not only washes the electrodes, but is actively stirred up by forced flow through the electrode material. In addition, it is advantageous if the refining is supported by stirring-up vanes which stir up the flowing water even more.
In a preferred embodiment of the device according to the invention, the integral body is a capsule. The end bases of the capsule are straight, or pyramidally raised, or roundly convex, or a combination of the list of variants, with the end bases being provided with openings for the flow of water through the capsule. The capsule design has the advantage of greater mechanical protection of the electrodes within the device. For flexible water inlet pipes/hoses, the flexibility of walls is assumed, so that in the case of external force acting on the wall of flexible water inlet, the capsule shape distributes this force effect better than if the compressed wall of inlet acted directly on the electrodes. In addition, in the case of close chaining of integral bodies, pyramidal or round convex bases have the function of defining the safe distance of adjacency, so that bending of the flexible water inlet does not cause collision and damage between adjacent bodies, which would lead to loss of flexibility of water inlet.
In terms of water stirring-up quality, experimental testing proves corrugated sheet electrodes to be advantageous for the capsule, which are sandwiched on top of one another, as well as electrodes which form at least one pair in the capsule in which they interlock, and last but not least electrodes which form at least one row of three electrodes in the capsule for blocking the flow of water, arranged in a row bevelled and parallel next to each other, and at the same time the middle bevelled electrode is inclined in the opposite direction from the end bevelled electrodes and forms a pair for water galvanization with each of the end bevelled electrodes.
In another preferred embodiment of the device according to the invention, the means for inserting and fixing the electrodes is formed by a ring for creating a contact surface with the inner side of the flexible water inlet. At the same time, flexible electrode terminals protrude from the front and rear of the ring. The flexible electrode terminals protrude preferably symmetrically from the ring and are provided with grooves for the insertion of electrodes. The ring design places lower resistance to water flow, while maintaining high galvanization efficiency. At the same time, the flexible electrode terminals have little effect on the flexibility of water inlet.
It is preferred if, in the ring-shaped design, the electrodes have the shape composed of a cross for inserting its arms into the grooves of the flexible terminals and further composed of stirring-up vanes having a shape substantially similar to the shape of propeller blades. The cross forms a support that resists the force of the flowing water and the stirring-up vanes refine the water for effective galvanization.
In an alternative preferred embodiment of the device according to the invention, the means for inserting and fixing the electrodes is formed by an assembly of at least three concentric rings to form an interface with the inside of the flexible water inlet, in which adjacent rings are connected to each other by at least one flexible spacer, with the central rings being provided with at least one groove for inserting the electrodes. The end rings form protective stops, so they are without electrodes. Flexible spacers prevent the rings from being crushed together or from being spaced apart, and in addition allow the device to bend to a limited extent together with the flexible water inlet in the case of an attempt to bend the flexible water inlet. Also for this second embodiment of the device according to the invention, it is preferred if the electrodes have the shape composed of a cross for inserting its arms into the ring and further composed of stirring-up vanes having a shape substantially similar to the shape of propeller blades.
According to experimental testing, the electrodes are preferably made of sheet metal “U” profile, and in addition, in a more preferred variant, the two electrodes of the “U” profile form at least one pair in which they interlock.
Another preferred embodiment of the invention is one in which the means for inserting and fixing the electrodes is formed by at least one inner rod passing through the electrodes and at least two peripheral rods passing through the electrodes at their perimeter. The rods fix the electrodes in a concentric arrangement. At the same time, the ends of the rods are provided with locking means, the role of which is to prevent the electrodes from slipping out of the rods. Furthermore, the peripheral rods are provided with locking means at the intersections through the electrode at their perimeters so that the peripheral rods are not released from the electrodes. Spacer rollers are also loosely mounted on the rods between two adjacent electrodes, the task of which is to prevent the electrodes from approaching each other. The integral body of rods and electrodes is preferably embedded in an electrically non-conductive sleeve. The sleeve has two functions. The primary function is to prevent electrical contact with the wall of the flexible water inlet, in particular if it is a metallic material of which the flexible inlet is made. The secondary superstructure function of the sleeve is to increase the rigidity of the integral body, which is desirable in particular in installation in the existing flexible water inlet pipes/hoses.
In a preferred embodiment of the device according to the invention, the device is provided with a shielding of electromagnetic fields in each of the integral bodies, or a common shielding arranged on the flexible water inlet for at least two integral bodies arranged in a row, or the device is provided with a shielding for arrangement between the inner wall of the flexible water inlet and integral bodies. External electromagnetic fields can cause the accumulation of charge on the electrodes, which in turn limits the galvanization process of physical water treatment.
In a preferred embodiment of the device according to the invention, at least one flow-through turbulent galvanization system of electrodes is provided with at least one permanent magnet. The magnetic field from the permanent magnet will make it possible to reverse the polarity of the existing clusters of magnetic dipoles of molecules in the water, which could serve as a basis for the growth of limescale.
Advantages of the invention include maintaining the flexibility of water inlet. The invented device is suitable both for newly manufactured flexible water inlet pipes/hoses and for existing ones, in which an average skilled worker can install it. At the same time, a high water galvanization effect is achieved, as the entire volume of water flowing through the flexible inlet must flow through the device. It is not possible for some of the water flow streamlines to pass through the device and not wet the surface of the electrodes.
The present invention will be explained in detail by means of the following figures where:
It shall be understood that the specific cases of the invention embodiments described and depicted below are provided for illustration only and do not limit the invention to the examples provided here. Those skilled in the art will find or, based on routine experiment, will be able to provide a greater or lesser number of equivalents to the specific embodiments of the invention which are described here.
To carry out the invention, the condition must be fulfilled that the shape of cross-section of the integral body 3 corresponds to the shape of cross-section of the cavity of flexible water inlet 1 typically a pipe or a hose. In the vast majority of cases, the cross-section of the cavity of flexible water inlet 1 is circular, but it is possible to adapt the invention to be implemented with a different shape of cross-section of the inlet 1. By fulfilling this condition, the integral body 3 touches the inner wall of the inlet 1. The contact between the inner wall of the inlet 1 and the body 3 causes the integral body 3 in the inlet 1 not to travel and at the same time prevents water from flowing around the body 3. To increase the friction in the contact area, it is possible to increase the dimension of the body 3 to be pressed against the inside of the inlet 1. Alternatively, it is sufficient to select the material of the body 3 such that it has a high coefficient of shear friction with respect to the material of the inner wall of the inlet 1. It is also possible to create a constriction on the inlet 1 before and after the first integral body 3 of the device, which would block the possibility of displacing the bodies 3 in the inlet 1.
In the exemplary embodiment of the capsule integral body 3, the bases of the body 3, which are transverse against the flow of water, are provided with openings 5 for the flow of water through the capsule and the system of electrodes 2 enclosed therein. In preferred embodiments of the invention, the bases are pyramidal or convex towards the centre of the body 3. Shaping the bases has two tasks. Firstly, it reduces the resistance of the body 3 to the flow of water and, secondly, when arranging several bodies 3 in a row in a single device, the shaping of bases makes it possible to maintain the flexibility of water inlet 1. Again, in the overwhelming embodiments of the invention, the shape of the bases of the capsule bodies 3 will be round convex, but the invention can also be used with other shapes of the bases of capsules, provided that the condition of flexibility of the water inlet 1 is maintained. A person skilled in the art can handle this task for specific water inlet pipes/hoses 1 as part of his/her routine work.
In the simplest embodiment of the device, the capsule integral body 3 has a spherical shape. The spherical shape meets the requirement to maintain the flexibility of the inlet 1 if the spherical capsules are arranged in a row, since the spherical surfaces do not collide at the point of bending of the water inlet 1. A disadvantage of the spherical embodiment of the invention is that the spherical body 3 provides a small storage space for the electrodes 2 for water galvanization.
In a preferred embodiment of the invention, the capsule integral body 2 is cylindrical with round convex bases. A preferred embodiment of the invention is shown in
In this particular embodiment of the invention shown in
As shown in
The person skilled in the art will be able to design a wide range of design solutions of electrodes 2 for the systems of electrodes 2 inserted into capsules. The mentioned embodiments of the systems of electrodes 2 do not limit the scope of the invention, the essence of which lies mainly in the use of integral bodies 3 while maintaining the flexibility of the water inlet 1.
In another example of the invention embodiments according to
The electrode 2 is shown in detail in
The electrodes 2 are circular, such as those shown in
The physical water treatment device according to the invention finds its application in particular in flexible water inlet pipes/hoses of domestic water appliances prone to limescale deposition, but also in other applications where it is necessary to physically treat water in a flexible water inlet.
Number | Date | Country | Kind |
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PV 2020-304 | May 2020 | CZ | national |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2021/064157 | 5/27/2021 | WO |