CLEAN WATER FOR BATHING AND MEDICAL TREATMENTS
20220371925 · 2022-11-24
Assignee
Inventors
Cpc classification
C02F2305/023
CHEMISTRY; METALLURGY
C02F1/467
CHEMISTRY; METALLURGY
C02F2103/42
CHEMISTRY; METALLURGY
C02F1/001
CHEMISTRY; METALLURGY
International classification
Abstract
An easily adaptable or do-it-yourself (DIY) installation water cleaning device on any existing spa or pool is provided herein. The cleaning device includes an electrolysis module equipped with a particular boron-doped diamond electrode on silicum substrate. The foregoing also relates to a method to clean water on spa or pools using a water cleaning device that includes particular boron-doped diamond electrode present on the elecrolysis module. The foregoing also relates to electrolyzed bathing water for use in the treatment of inflammatory diseases of the skin and for use for use in the treatment of wound healing of the skin.
Claims
1. A water cleaning device used to prepare water for treatment of the skin, comprising an electrolysis module connected to an electric power supply module, said electrolysis module comprising at least two boron-doped diamond electrodes coated on a silicon substrate, in which the concentration of boron is of between 200 ppm (3×10.sup.19B atoms/cm.sup.3) and 1500 ppm (2×10.sup.20B atoms/cm.sup.3), said diamond electrodes having an active surface area of between about 50 and 100 cm.sup.2, the electric power supply module supplying a direct current to the electrodes, the operating voltage of said electrodes being between −1V and −2V on cathodic polarization and between +2V and +4V on anodic polarization, the device being configured to allow, in use, permanent circulation past the electrodes in a closed loop.
2. The water cleaning device according to claim 1, wherein the prepared water is used for treatment of wound healing of the skin.
3. The water cleaning device according to claim 1, wherein the prepared water is used for treatment of inflammatory diseases of the skin.
4. The water cleaning device according to claim 3, wherein the inflammatory diseases are eczema or atopic dermatitis.
5. The water cleaning device according to claim 1, wherein it further comprises a hydraulic or water flow sensor to measure the water flow passing through the electrodes, the hydraulic or water flow sensor being positioned before a water inlet or after an outlet of the electrolysis module.
6. Electrolyzed bathing water for use in the treatment of the skin and being obtained according to a water cleaning method to clean water without fungicidal additives or without biocidal chemical additives and comprising the steps of: installing a water cleaning device in series in a water filtration circuit of a spa or pool where an affected area of a person's skin is bathed, said cleaning device comprising two boron-doped diamond electrodes coated on a silicon substrate, in which the concentration of boron is of between 200 ppm (3×10.sup.19B atoms/cm.sup.3) and 1500 ppm (2×10.sup.20B atoms/cm.sup.3), said diamond electrodes having an active surface area of between 50 and 100 cm.sup.2, the operating voltage of said electrodes being between −1V and −2V on cathodic polarization and between +2V and +4V on anodic polarization; circulating said bathing water contained in said spa or pool in said filtration circuit by a filtration system and/or a pump such that said electrodes are in permanent contact with water in said spa or pool filtration circuit in a closed loop; and periodically connecting said electrodes to an electrical power source to periodically electrolyze the water circulated over said electrodes.
7. The electrolyzed bathing water according to claim 6, wherein the water is applied to the skin over a period ranging from 5 to 60 minutes.
8. The electrolyzed bathing water according to claim 6, wherein the pH of said water is maintained between 6 and 8.
9. The electrolyzed bathing water according to claim 6, wherein the temperature of the water is maintained between 35° C. and 45° C.
10. The electrolyzed bathing water according to claim 6, wherein the electrodes are periodically powered to perform electrolysis cycles of at least 30 min to one hour, with 4 to 12 cycles per 24 hours.
11. The electrolyzed bathing water according to claim 6, wherein the affected area of a person's skin is a wound.
12. The electrolyzed bathing water according to claim 6, wherein the affected area of a person's skin is an inflamed area, the person having an inflammatory disease.
13. The electrolyzed bathing water according to claim 12, wherein the inflammatory disease is eczema or atopic dermatitis.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0025] The accompanying drawings, which are incorporated in and constitute part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. The embodiments illustrated herein are presently preferred, it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown, wherein:
[0026]
[0027]
[0028]
[0029]
[0030]
[0031]
[0032]
DETAILED DESCRIPTION OF THE INVENTION
[0033] It has been surprisingly found that the drawbacks of the cited prior art are solvent by using a water cleaning device including at least two boron-doped diamond electrodes coated on a silicon substrate, in which the concentration of boron is of between 200 ppm (3×1019 B atoms/cm3) and 1500 ppm (2×1020 B atoms/cm3), the diamond electrodes having an active surface area of between about 50 and 100 cm2, preferably between about 60 and 80 cm2, more preferably about 70 cm2. This water cleaning device is used for preparing an electrolyzed bathing water for use in the treatment of inflammatory diseases of the skin, in particular the treatment of eczema or atopic dermatitis. It is also used for preparing an electrolyzed bathing water for use in the treatment of wound healing of the skin.
[0034] The inventors have surprisingly discovered that using specific boron-doped diamond electrodes having a surface of more than 50 cm2, with an optimum at about 70 cm2, allows to provide full decontamination of bathing waters without use of chlorinated chemicals or flocculants. This thus allows for more hygienic and dermatologically neutral water cleaning in spas and pools.
[0035] In addition, the use of such electrodes allows for intermittent, periodical, electrolysis of the water, which is more efficient from an electrical power consumption point of view.
[0036] In preferred embodiment the water cleaning device is easily adaptable to an existing cleaning system of a spa or pool, such that it can be easily fitted into the filtration circuit without fuss or amendment works for users.
[0037] The operating voltage of the electrodes present in the water cleaning device is included between −1V and −2V on cathodic polarization and between +2V and +4V on anodic polarization.
[0038] The electrodes of the water cleaning devices can adopt various shapes such as a circular, square, triangular rectangular or star-shaped transversal cross-section in a plane perpendicular to a longitudinal direction of the electrode.
[0039] In a preferred embodiment the thickness of the boron doped diamond layer is included between 1 m and 9 m, preferably 1 and 4 m, more preferably 1 and 3 m.
[0040] The resistivity of the silicon substrate in the water cleaning device is included between 50 to 200 mOhm.cm, preferably 50 to 150 mOhm.cm.
[0041] In a preferred embodiment the water cleaning device further includes hydraulic or water flow sensor.
[0042] Another aspect of the invention is a method to clean bathing water in spas or pools without fungicidal or biocidal chemical additives, which includes the steps of:
[0043] Installing a cleaning device as previously defined in a water filtration circuit of a spa or pool;
[0044] Circulating bathing water contained in the spa or pool in the filtration circuit by a filtration system and/or a pump such that the electrodes are in permanent contact with water in the spa or pool filtration circuit,
[0045] Periodically connecting the electrodes to an electrical power source to periodically electrolyze the water circulated over the electrodes.
[0046] In the context of the present invention, the terms “periodical” or “periodically” in relation to the connection of the electrodes to electrical power and to the electrolysis cycles thereby delivered on the water circulated in the filtration circuit of a spa or pool shall be construed as meaning “non-permanent”, i.e. intermittent, occurring at time-spaced intervals, the time-spaced intervals not necessarily being constant over time.
[0047] In other words, the terms “periodical” or “periodically” shall not be interpreted in such a way that they are strictly limited to a mathematical definition of those terms, i.e. periods of identical duration cyclically repeating over time.
[0048] In a preferred embodiment when applying the method of clean bathing according to the invention is to maintain the pH of the water present in the spas or pools between 6 and 8.
[0049] In the method according to the invention is it is important that the temperature of the water is maintained between 35-∞C and 45oC.
[0050] In the method according to the invention the water is circulated continuously in the filtration circuit and the electrodes are periodically powered to perform electrolysis cycles of at least 30 min to one hour.
[0051] In a preferred embodiment of the method according to the invention the electrode are powered at regular intervals.
[0052] In a preferred embodiment of the method according to the invention 4 to 12 electrolysis cycles are conducted per 24h, i.e. the electrodes are electrically powered 4 to 12 times a day. Preferably, two consecutive electrolysis cycles shall not be completed within less than 2h, to maintain full efficiency of the water cleaning method over time, in particular over months, without requiring changing the bathing water.
[0053] In the method according to the present invention, the water does need, and should preferably not contain any cleaning chemical additives with fungicidal or bacteriocidal effect or the like. The only acceptable additive to allow proper performance of the invention may be a conductivity salt such as NaCl to improve electrolysis cycles. The conductivity salt may be present at a concentration of 0.2 to 2g per Liter, preferably from 0.5 to 1g per Liter.
[0054] The invention also relates to electrolysed bathing water obtained by the method described above.
[0055] The invention also relates to electrolysed bathing water according to the invention for use in the treatment of inflammatory diseases of the skin.
[0056] The invention also relates to electrolysed bathing water according to the invention for use in the treatment of wound healing of the skin.
[0057] The electrolysed bathing water according to the invention for use in the treatment of inflammatory diseases of the skin or for wound healing is used over a period ranging from 5 to 60 minutes of exposure.
[0058] The electrolysed bathing water is obtained by means of the water cleaning device that allows for the implementation of the method described above, the cleaning device being where applicable present in a fixed or movable manner in a swimming pool, a spa, a bathtub or a shower. It can also be present in a traditional water distribution circuit, preferably at the distribution outlet such as a tap.
[0059] With reference now to the drawings,
[0060] From an existing spa 4 or pool system with its own water circuit 4′, it is very easy to adapt a water cleaning device according to the invention, including a power supply module or box 2 in connection with at least one electrolysis module 1, which includes at least two boron-doped diamond electrode deposited on a silicon substrate. The water cleaning device also includes a hydraulic or water flow sensor 3 shown in
[0061] One advantage of the present invention is that the water cleaning device proposed is made of simple and inexpensive elements easy to adapt and install in existing spa or pool systems.
[0062] As highlighted in
[0063] These classical systems usually require usage of chemical compounds such as chlorine as cleaning and purifying agents in the water on a regular basis, for example in pill, liquid or powder form, to remove or destroy fungus or bacteria present in water. Other known chemicals such as Trichloro isocyanure or PHMB for polyhexamethyleme biguanide can be used as well.
[0064] Adding such chemicals can be detrimental to the safety and comfort of users as, despite the presence of a filtering system, they can cause allergies or skin and tissues irritation of users.
[0065] The water cleaning system according to the invention advantageously allow for effective cleaning and cleaning of the water of spas and pools without using any chlorinated additives or fungicides, thanks to electrolysis of the water of a spa or pool by means of boron-doped diamond electrodes, which produces into the water natural disinfecting agents, including active oxygen, and eliminates micro-organisms, fungi, urea and like faster than any chlorinated additive.
[0066] This provides an undeniable advantage over the use of chemical compounds to clean the water of spa or pool. The only requirement for the cleaning system and method of the invention to work effectively is the presence in the water of a spa or pool to be disinfected of conductivity salts such as NaCl, either naturally present or added in the water if required. The conductivity salt is present at the concentration of 0.2 to 2 g per Liter, preferably from 0.5 to 1 g per Liter, which is probably the lowest content of NaCl or conductivity salt usually present on spa and pools. By avoiding any added chemical compounds, the drawbacks such as skin or eyes irritation disappear for users.
[0067] The working principles of the water cleaning device of the invention, which will be described further, allows for a long period of time (about 3 months) to keep the water clean in the spa and pool without changing it and therefore reduces the maintenance of the spa or pool (changing the water, draining the spa or spool, changing the filter, Ķ.).
[0068] In the water cleaning device of the invention there is at least one electrolysis module 1 including at least two boron-doped diamond electrodes coated on a substrate.
[0069] The electrode(s) provides a contact area that is included between 50 and 100 cm2, preferably 60 and 80, more preferably about 70 cm2.
[0070] The surface area as well as the diamond nature of the electrode(s) provides a double advantage over the existing spa or pool cleaning systems configurations found in the prior art.
[0071] The first advantage with the surface area of the electrode(s) is that the contact between the electrode and the water to be treated is optimal, thus the contact area allows to treat efficiently about 6 to 10 m3 of water per day with a reduced consumption of electricity during the cleaning process.
[0072] A second important advantage is the operating windows (meaning the electrical parameters for the power supply of the electrode(s)) of the particular boron-doped diamond electrode(s).
[0073] This aspect of the electrode(s) is very important as highlighted in
[0074] The comparison of
[0075] The boron doping of the diamond electrode also has its importance on the properties of the water obtained; the concentration of boron is between 200 ppm (3×1019 B atoms/cm3) and 1500 ppm (2×1020 B atoms/cm3).
[0076] This boron concentration as well as the nature of the electrodes with a diamond base on silicon provide it with properties that allow it to operate on a potential between −1V and −2V on the cathode polarisation and on +2V and +4V on the anode polarisation. It is very important as highlighted in
[0077] This larger working window is of importance as shown in
[0078] Without being limited by theory, accessing operating overvoltages that are much higher than the conventional and expensive electrodes which are platinum electrodes, makes it possible to obtain water that has an interesting therapeutic potential on diseases of the skin. The physical-chemical interaction between the electrodes used for the invention and the molecules of electrolysed water allows for a functionalisation of the water that is not easy to characterise with current techniques but of which the therapeutic effects on the skin can be observed directly. These boron-doped diamond electrodes make it possible to generate or to activate ionic and radical species that will provide the water with a therapeutic potential and more particularly on the processes of wound healing and inflammation. The water produced by the method of the invention has therapeutical and biological properties and shows activity that is undeniable with regards to conventional non-electrolysed water according to the method of the invention.
[0079] While with platinum electrode we could have valuable chemical compounds generated to clean correctly when there is chemical additive added to the water generated such as O3 from H2O or O2 from H2O or Cl2 from Cl—, the use of the electrode according to the present invention does no longer require any additives. Without being bonded by theory, it seems that using the particular electrodes makes the water is own cleaning agent.
[0080] Therefore the particular diamond electrode(s) of the water cleaning system of the invention totally avoids the use of chemicals commonly used in spas or pools to clean them and is efficiently treating a large volume of water for a long period of time.
[0081] The boron-doped diamond electrode(s) could be according to the prior art deposited on various substrates such as metal or alloys, but the most convenient substrate found to be suitable for the application contemplated on spa or pool is a silicon substrate.
[0082] The thickness of the silicon substrate where the boron doped diamond layer is deposited on is about 1 m and 9 m, preferably 1 and 4 m, preferably 1 and 3 m.
[0083] Silicon is also preferred as a substrate for supporting the boron doped diamond layer as it cannot rust into water and a strong and efficient bond between silicon and the boron doped diamond layer can be obtained upon formation of the electrode(s).
[0084] The boron doped diamond layer is for example deposited by Chemical vapor deposition also known as CVD or by plasma assisted chemical vapor deposition process PACVD. Other examples of process for example, hot filament CVD (HFCVD); combustion flame CVD (CFCVD); arc jet plasma-assisted CVD (AJCVD); laser-assisted CVD (LCVD); and RF or microwave plasma-assisted CVD (RF or MW CVD) could be also contemplated.
[0085] The boron-doped diamond electrode(s) in the electrolysis module 1 of the cleaning system of the invention may have various shapes, and for example show a circular, square, triangular rectangular or star-shaped transversal cross-section in a plane perpendicular to a longitudinal direction of the electrode(s).
[0086] The electrolysis module 1 is open to a hydraulic or water flow in the water circuit of a spa or pool and connected to the electric power supply module 2. To work properly and not jeopardize the proper working conditions, the electrode(s) are supplied a direct current from the power supply module 2 as show in
[0087] To work properly the electrolysis module 1 requires to be permanently bathed into water, and preferably that water is circulated over the electrodes by the filtration system 6 of the spa or pool. As shown in
[0088] According to
[0089] Should the electrode(s) in the electrolysis module 1 not be bathed into water, then the power supply module 2 also detects the opening of the electrical circuit and thus shuts down power as well.
[0090] The water cleaning device according to the invention further includes an earthing apparatus 7 (shown in
[0091] The water cleaning device according to the present invention can advantageously work in an automatic mode or can be activated or deactivated on demand, manually or by using a remote controller system.
[0092] Another advantage of the present invention lies in the fact that the water cleaning device does not necessarily need permanent activation but can be activated periodically, i.e. at timely intervals, preferably but not necessarily regular intervals. It has been found that electrolyzing the water at regular intervals allows for the water to remain clean for a long period of time. Activating the electrolysis module between 4 to 12 times for at least one hour per day is sufficient to obtain clean water, for over 3 month to one year. In case of strong frequentation, the electrolysis module can be activated full time for up to one full day.
[0093] Another object of the present invention is a method to clean bathing water in spas or pools without fungicidal or biocidal chemical additives, wherein the method includes the steps of:
[0094] Installing a water cleaning device according as described previously in an existing water filtration circuit of a spa or pool;
[0095] Circulating bathing water contained in the spa or pool in the filtration circuit by a filtration system and/or a pump such that the boron-doped diamond on silicon substrate electrodes present in the electrolysis module 1 are in permanent contact with water in the spa or pool filtration circuit;
[0096] and then periodically applying an electric current to the electrode to electrolyze the water circulating over the electrodes.
[0097] The water cleaning device subjects the water passing through the electrolysis module to a quantity of current during the electrolysis process between 15 and 500 mAh/L of water, more preferably 40 to 250 mAh/L of water, even more preferably 50 to 200 mAh/L, the electrolysis duration being between 15 and 60 minutes per cycle, 4 to 12 cycles per day.
[0098] As mentioned previously to enhance the capacity of the system to speed the water cleaning process or to treat efficiently a higher volume of water, it is possible to use at least one electrolysis module, just requiring to adapt accordingly the connection of the existing water circuit with the electrolysis module present with the water cleaning device.
[0099] It is important that the pH of the water should not be too much acid to promote water comfort, the ideal pH to use efficiently the water cleaning device is between 6 and 8.
[0100] It is also important to avoid having warm water on the cleaning device system; water maintained between 35-∞C and 45oC, ideally 40oC is the best temperature for using the water cleaning device.
[0101] Another advantage of the cleaning device according to the invention is the low level of maintenance on the electrodes present in the electrolysis module 1. A simple inversion of the polarity of the boron doped diamond electrodes will be required to clean them and is performed by the electronic card of the dedicated box.
[0102] By way of comparative example, the inventors tested two electrolysis protocols, which demonstrate the efficiency of the periodical electrolysis process of the invention in the cleaning of water contained in a spa.
[0103] More specifically, electrolysing the spa water once a day during 12 continuous hours applying a current charge of 10 to 12 Ah/day.m3 does not allow keeping spa water sanitized for use of 4 persons/week over a 1 month period, while the filtration of the water is continuously activated.
[0104] By opposition, conducting electrolysis cycles of the water for between 30 min and 1 h applying a current charge of 10 to 12 Ah/day.m3, at regular intervals between 4 to 12 times a day over a 1 month period, while the filtration of the water is continuously activated, provides a perfectly sanitized spa water with no use of any chemical nor any water replacement.
[0105] In addition, use of standard salt electrodes instead of boron-doped diamond electrodes according to the current invention induces a strong increase in concentration of combined chlorinated compounds (chloramines) in the water, which is totally absent with the current invention system and diamond electrodes.
[0106] Regarding the skin conditions and the wound healing, the present invention relates to a particular electrolysed bathing water obtained by the described method that makes use of particular boron-doped diamond electrodes fixed on silicon making it possible to resolve the aforementioned problems or disadvantages. It has the following advantages and improvements:
[0107] It is not based on conventional drugs which over prolonged use cause, due to the nature of the disease (its recurrence), a habituation or a resistance,
[0108] It is hardly or not at all invasive,
[0109] The water is unlimited and easily accessible,
[0110] It does not require the delivery of a prescription or particular precautions when it is used,
[0111] The cost of production thereof is relatively low,
[0112] The possibility of easily “reactivating” the water in an active or therapeutic state substantially limits its expiry date,
[0113] The absence of allergies or habituation.
[0114] The bathing water as a product obtained by the electrolysis/cleaning method of the invention is able to be used in the treatment of inflammatory diseases of the skin and more particularly for use in the treatment of eczema or atopic dermatitis. This bathing water also has cicatrising properties, and is able to be used in the treatment of the wound healing or of associated disorders. The bathing water thus obtained can be used within different devices. The devices used can be selected among a swimming pool, a spa, a bathtub or a water distribution system such as a tap or a shower or a suitable ambulatory treatment device. The electrolysis module used will then be integrated into an existing water circuit so as to prepare the electrolysed water, for example in swimming pools or spas, or added and connected as a mobile device on a hydraulic circuit linked to a tap if a shower or a bathtub is considered. In the context of an ambulatory treatment device, an electrolysis device and a reservoir of water with a determined volume can be connected or assembled in a closed circuit with an applicator tap or member, with a recovery device also able to be associated in such a way as to prevent losses in the drain of electrolysed treatment water and the recycling thereof to the reservoir for another electrolysis.
[0115] The nomad or mobile or even fixed mode of usage and the adaptability thereof to existing devices so as to produce electrolysed water useful in the treatment of inflammatory diseases of the skin is an advantage of the present invention.
[0116] The initial water subjected to the electrolysis, regardless of the source thereof, is cleaned and potentialised by the electrolysis. It is therefore not necessary to use distilled water, as the method of electrolysis of the invention provides a natural anti-bacterial and anti-fungal effect, which makes it possible to obtain high quality water.
[0117] Any water, whether it is natural, spring water or from the mains can be used in the method of producing electrolysed water according to the invention. The advantage and the flexibility of use of the electrolysis module according to the invention makes it possible to obtain from a common water source a treatment that is less expensive because it does not require any conventional chemicals in the treatment of inflammatory diseases of the skin or in the treatment of the cicatrisation or of associated disorders, while still avoiding the secondary effects of the chemicals.
[0118] In the case of use in devices such as swimming pools, spas, bathtubs, etc, Ķthe advantage is that a large surface can be treated; it can concern the entire body or all or a part of the body, and is especially effective when the inflammatory disease is localised in different zones; this avoids using substantial quantities of cream.
[0119] The treatment can take place in a bath for a duration of exposure ranging from 5 to 45 minutes and repeated more than once a day, for example until the inflammatory symptoms disappear or are attenuated, or until the cicatrisation occurs.
[0120] In the case of treating a child suffering from severe eczema on the upper and lower limbs and the back, the treatment is more effective after two days and as soon as 5 hours after exposure for fifteen minutes in a bath including the electrolysed water according to the method of the invention. Before being placed in the bath containing the water, a very high density of inflammation of the skin is observed on the foot, which is attenuated 5 hours after exposure in the bath; then, two days after the bath, the inflammatory portion seems to be in the form of a scab that is still reddish but no longer causes any itching conducive to forming scabs that will subside afterwards.
[0121] Those skilled in the art will appreciate from the foregoing that various adaptations and modifications of the just described embodiments can be configured without departing from the scope and sprit of the invention. Therefore, it is to be understood that, within the scope of the appended claims, the invention may be practiced other than as specifically described hereinOf note, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “includes”, and/or “including,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof
[0122] As well, the corresponding structures, materials, acts, and equivalents of all means or step plus function elements in the claims below are intended to include any structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the invention. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
[0123] Having thus described the invention of the present application in detail and by reference to embodiments thereof, it will be apparent that modifications and variations are possible without departing from the scope of the invention defined in the appended claims as follows: