Claims:WE CLAIM
1. A novel device for air purification, said device adapted to function as an air/atmospheric cleaning equipment adapted to filter bio particles and comprising:
? an air suction unit adapted to suck in air via an air inlet (16) as well as release out the filtered clean air through an air outlet (17), said air suction unit using a low wattage suction fan and adapted to suck-in polluted air within any room or from a specific generating source through said air inlet (16) of said device, said inlet (16) augmented with a suitably designed suction hood using a flexible self-balanced duct or hose in order to suck-in polluted air from a specific generating source into said device;
? a washable pre-filter unit (10) adapted to function as a media filter to trap aerosols of the size greater than or equal to 20µm;
? electrostatic filter section (9) comprising a set of dual electrostatic filter modules wherein each of said electrostatic filter module uses a unique arrangement of aluminium plates of four sizes using stainless rods, aluminium and insulating ceramic spacers, stainless steel frame supports , ceramic insulating bushes, cast tungsten anode wires positioned using stainless steel springs and fasteners, adapted to filter the air from said pre-filter unit and to trap particles of the size 0.01µm including bio-particles;
? an ultraviolet (UV) light source (18), said ultraviolet (UV) light source (18) adapted to function as a germicidal source and to filter the air from said electrostatic filter section, said germicidal ultraviolet (UV) light source (18) further adapted to render the remaining bio-particles present in the air non-viable;
? a post-filter unit (8) with an anti-bacterial nano particle coated media activated by said ultraviolet (UV) light source (18), said nanoparticle coating is a combination of silver (Ag) and titanium di-oxide (TiO2) nanoparticles impregnated uniquely into a reticulated foam media;
? a power supply unit adapted to provide electrical power for the functioning of a plurality of electrical units in said device, said power supply unit is self-protected from overload and short-circuit wherein the opening of the filter access door switches off the electrical circuit of said device, said plurality of electrical and mechanical units suitably mounted in a portable metal enclosure fitted with a set of wheels(19);
? a plurality of electrical functional elements operably coupled with one another via wired connectivity within said device; wherein each of said
pre-filter unit (10), electrostatic filter section (9), ultraviolet light source (18) and post-filter unit (8) with said anti-bacterial nanoparticle coated media is positioned and combined in such a way as to provide maximum filtration efficiency.
2. The novel device for air purification as claimed in Claim 1, wherein said ultraviolet (UV) light source (18) in said device is positioned in such a way as to (i) bathe the plates of said electrostatic filter modulesd (9) and to render bio-particles trapped on said plates non-viable, (ii) to render bio-particles in the air received from said electro-static filter modules (9) non-viable as said bio-particles pass through the (UV) light source (18), and (iii) to activate the anti-bacterial nanoparticle coating in said post-filter unit (8).
3. The novel device for air purification as claimed in Claim 2, wherein said ultraviolet (UV) light source (18) in said device includes a pair of ultraviolet lamps completely enclosed within said device and not visible from outside the device.
4. The novel device for air purification as claimed in Claim 3 wherein the power rating of each of said ultraviolet lamps is 15 watt(or more).
5. The novel device for air purification as claimed in Claim 4, wherein the wavelength of light radiation emitted from each of said ultraviolet lamps is 254nm.
6. The novel device for air purification as claimed in Claim 1, wherein said filtered clean air is statically neutral thereby making said device viable for a plurality of medical applications.
7. The novel device for air purification as claimed in Claim 1, wherein said device is configured in such a way as to be safe for other electronic devices in the vicinity against electromagnetic interference (EMI) and radio frequency interference (RFI).
8. The novel device for air purification as claimed in Claim 1, wherein said filtration efficiency is about 95%.
9. The novel device for air purification as claimed in Claim 1, wherein the size of the filtered particle/aerosol lies in the range of 0.01µm to 20µm.
10. The novel device for air purification as claimed in Claim 1, wherein said pre-filter unit, said electrostatic filter section, said ultraviolet light source are washable and re-usable. said post-filter unit may be recharged every year or as required.
, Description:FIELD OF THE INVENTION
The subject matter of the instant invention relates generally to the field of filtering and cleaning devices for treating air. Particularly and not exclusively, the subject matter of the instant invention is related an effective device for treating and cleaning air to reduce airborne pollutants including microorganisms such as bacteria and virus, fungus , molds , spores, and allergens (referred to as bio-particles hereafter) in buildings including residential dwellings which are detrimental to human health and environment. The bio particles are also rendered non-viable (dead or not capable of living, growing, and developing).
BACKGROUND OF THE INVENTION AND THE PRIOR ART
The United States Patent document No. US7258729B1 (bearing the Application No. 11/197,234) entitled “Electronic Bi-Polar Electrostatic Air Cleaner’ as assigned to Air Ion Devices Inc., illustrates an air cleaner apparatus. The air cleaner apparatus therein includes a first conductive screen member, a second conductive screen member, a dielectric filter media material interposed between the first conductive screen member and the second conductive screen member to form a filter. There is a power supply adapted to provide opposite polarity high voltage to the first and second conductive screen members. These conductive screen members are coated with a carbon material such as activated charcoal to prevent the built-up of capacitance. There is a pair of post ionization electrodes adjacent to the second conductive screen member. The power supply is activated in the second conductive screen member. The first and second conductive screen members are polarized. Small particles in an air stream passing through the air cleaner apparatus are charged and attracted to the opposite polarity and lodge at random on the dielectric filter media material and held in place by the closed circuit of opposite polarity screens. The filter media is treated with a bactericide. The post ionization electrodes charge particles in the air with opposite charges thereby causing the particles to agglomerate.
The United States Patent document No. US8211374B2 (bearing the Application No. 10/565,426 and US Publication No. US2006/0182672A1) entitled ‘Air Cleaning Device’ as assigned to Novaerus UK Ltd., illustrates an apparatus for the treatment of air. The apparatus includes a low power alternating current corona discharge ozone generator with a power rating in the range of 4 watts ~ 50 watts mounted inside a chamber. The chamber is defined by an earthed casing comprising a metal or a plastics material impregnated or coated with a metallic material and having an air inlet and an air outlet. The inlet and outlet are disposed in proximity to each other and the apparatus is provided with a single filter mounted so that respective different portions of the filter occlude the inlet and outlet, respectively. At least one air flow impeller formed and arranged to induce a flow of air through the chamber from inlet to outlet in a non-rectilinear path. The ozone generator is formed and arranged for generating a restricted concentration of ozone and any other reactive species formed together therewith, within an inactivating zone contained within the chamber, through which the air flow is passed in use of the apparatus, which restricted concentration is sufficient effectively to inactivate airborne pollutant material entrained in the air flow. The restricted concentration decays sufficiently outside the inactivating zone so that the concentration of ozone in the cleaned air expelled from the apparatus is less than about 0.3 ppm without the use of an ozone decomposition catalyzer.
The European Patent document No. EP1931441A1 (claiming the Priority of the PCT Application No. PCT/US2006/035488) entitled ‘Electrostatic Air Filter’ as assigned to Argonide Corp., illustrates A filter for gaseous media. The apparatus includes a plurality of nano alumina fibers and a plurality of second fibers mixed with the nano alumina fibers. The second fibers are arranged to create asymmetrical pores. The second fibers comprise a combination of coarse and fine fibers. The filter is capable of removing greater than 99.97% of 0.3µm particles from a humid air or gas stream. Further, the filter media is capable of removing greater than 99.995% of a plurality of penetrating particles from a liquid or water aerosol.
The United States Patent document No. US20060278075A1 (bearing the Application No. 11/152,261) entitled ‘Air Purifier and Related Methods for Residential Dwellings’ as assigned to ESCOBAR ANTHONY, illustrates a method of exchanging filter cartridges in a return air system of a residential dwelling. The method includes the steps of manually and slidably removing an existing filter cartridge from a slot in the return air system, manually and slidably installing in the slot a replacement filter cartridge comprised of a source of ultra violet light and an electrostatic filter, displacing residential air along the return air system and as influent air through the filter, exposing the influent air to ultra violet radiation at the replacement filter cartridge to reduce airborne infections, and trapping other airborne particles in the electrostatic filter of the replacement cartridge. The filter cartridge for slot insertion into the return air system of a residential dwelling includes a retainer limiting the filter cartridge to a planar configuration, an ultra violet emitter carried by the retainer to reduce the airborne contaminates in the return air including bacteria and viruses, and an electrostatic filter to capture other airborne particles in the return air.
The United States Patent document No. US20130129565A1 (bearing the Application No. 13/813,763) entitled ‘Filter and Device for Treating Air’ as assigned to ECO-NANO GLOBAL Pte Ltd Co., illustrates a filter, that includes at least one antibacterial layer consisting of nano-silver particles and at least one ultraviolet photocatalytic layer that consists of consists of titanium oxide ranging from 0.1% to 21% by weight. The filter further includes at least one electrostatic layer. The antibacterial layer further includes zinc oxide, calcium oxide, magnesium oxide, silica or any combination thereof. The antibacterial layer has a loading of nano-silver particles ranging from 0.1% to 5% by weight. The size of the nano-silver particles is in the range from 10 nm to 25 nm. The filter is protected by a polymeric net, a metal casing or a combination thereof.
It is apparent from the prior-art including the aforementioned Patent documents that, there are air cleaners in available in the market which work using either di-electric charged plates, physical filter media ,high efficiency particulate air (HEPA) filters, or using electrostatic charged plates or using ionizers, or using anti-bacterial coating. It is observed that there is no such mention of any prior-art subject matter which uses a combination of all the techniques of di-electric charged plates , physical filter media, or using ionizers, or using anti-bacterial coating. Further to this, the above devices trap particles only as small as 0.3µm and do not render bio-particles trapped non-viable. Therefore bio-particles can escape and are capable of infection. Also ,ionizers are capable of trapping particles as small as 0.01µm. However, the trapped bio-load may escape and the escaping bio-particles are capable of infection. It is found that an anti-bacterial coating renders bio-particles non-viable. However, an anti-bacterial coating cannot trap other types of pollutants. In addition to this, the air filter as disclosed in most of the prior art are non-washable and meant for one-time usage.
Accordingly, in order to overcome one or more drawbacks associated with the prior art, there is strong felt a need for an effective, affordable and reliable device for air purification. The proposed device for air purification: (refer Fig 1 and Fig 3 attached)
? uses a combination of three techniques of 2-stage electrostatic filtration using high-voltage ionization and collection with a unique arrangement of aluminium plates of four sizes (small, medium, big and end/front plates) using stainless rods, aluminium and ceramic insulating spacers, aluminium/stainless steel frame supports, ceramic insulating high voltage (HV) bushes, cast tungsten anode wires(191micron) positioned using stainless steel springs and fasteners, germicidal Ultraviolet light and anti-bacterial silver and titanium dioxide nano coated media;
? uses a unique DUAL electrostatic filter module arrangement;
? wherein the filtering units are washable and re-usable except for the post filter which may be recharged every year or as required;
? traps bio-particles and renders them non-viable making it suitable for a plurality of medical applications;
? configured to release ion-free exhaust (statically neutral outlet air); and
? is operably safe with respect to electro-magnetic interference (EMI) and radio-frequency interference (RFI).
OBJECTS OF THE INVENTION
Few of the objects of the instant invention are as stated below:
? It is an object of the instant invention to provide an effective, affordable and reliable device for air purification that uses a combination of all the three techniques of 2-stage electrostatic filtration using high-voltage ionization and collection , germicidal Ultraviolet light and anti-bacterial nano coated filter media;
? It is another object of the instant invention to provide an effective, affordable and reliable device for air purification that uses dual electrostatic filtration technique- filter modules with a unique arrangement of mechanical components
? It is yet another object of the instant invention to provide an effective, affordable and reliable device for air purification that includes washable and re-usable filtering elements;
? It is an additional object of the instant invention to provide an effective, affordable and reliable device for air purification that traps bio-particles and renders them non-viable making it suitable for a plurality of medical applications;
? It is a further object of the instant invention to provide an effective, affordable and reliable device for air purification system that is configured to release ion-free exhaust air(statically neutral outlet air); and
? It is a still further object of the instant invention to provide an effective, affordable and reliable device for air purification that is operably safe for other electronic devices in the vicinity with respect to electro-magnetic interference (EMI) and radio-frequency interference (RFI).
Other objects, aspects, features and goals of the instant invention will be better understood from the following detailed description.
SUMMARY OF THE INVENTION
The instant invention provides an effective, affordable and reliable device for air purification including bio particles.
Principally, in accordance with a primary embodiment of the instant invention, the device for air purification is adapted to function as an air/atmospheric cleaning equipment. The device for air purification in accordance with the primary embodiment of the instant invention includes: an air suction unit with a low wattage suction fan. The air suction unit is adapted to suck-in polluted air within any room or from a specific generating source through an air inlet of the air purification device. The inlet is capable of being augmented at the inlet portion with a suitably designed suction hood using a flexible self-balanced duct or hose in order to suck-in polluted air from a specific generating source into the air purification device. There is also provided a pre-filter unit adapted to function as a media filter to trap particles of the size greater than or equal to 20µm.
Typically, in accordance with the primary embodiment of the instant invention, the device for air purification includes an electrostatic filter section comprising a dual set of electrostatic filter modules with uniquely arranged mechanical components (refer Fig 3 attached). The electrostatic filter section is adapted to filter the air from the pre-filter unit and further to trap particles of the size 0.01µm including bio-particles.
Each electrostatic filter module(refer Fig 3 attached) is made up of 4 sets of aluminium plates , designated as small (dimensions 115mmx275mm ), medium (dimensions 120mmx275mm) , big (dimensions 170mm x275mm) and end/front plates (dimension 284mm x 190mm) and each with a unique set of holes of 25mm diameter and 7mm diameter. The 7mm holes are used to insert a stainless steel rod to hold a set of plates together using ceramic spacers and aluminium spacers . The 25mm holes are used to provide air gap as required to avoid short-circuit for the high voltage to be connected to the module. They also hold the ceramic bushes on the end plates. The complete module dimension is 380mm x 288mm x 194 mm and consists of two sections, ionization section and collection section integrated into one module.. The ionization section consists of the big plates (earthing plates), ceramic insulating spacers, and stainless steel rods arranged linearly with about 45mm gap between the big plates. Midway between two big plates an anode wire of cast tungsten 191 micron is strung from top to bottom and held in tension using two stainless steel anode wire springs . There are a total of 7 such sections which form the ionization section The collection section consists of small and medium plates arranged alternately with about 7.5mm gap between the plates and insulated using ceramic and aluminium spacers . These are positioned towards the rear part of the big plates .The end/front plates along with aluminium/stainless steel angle corner plates form a rigid frame to hold the aluminium plates in place. The end/front plates also hold the ceramic insulating bushes in place and provide the electrical contact points . High voltage DC of 10KV(nominal voltage) is supplied to the ionization section and DC 5KV (nominal voltage) are supplied to the collection section.
Air carrying particles enters the ionization section where the high voltage of 10kv DC provides an electrostaticstatic field between the big plates(earthing plates) and the anode wire. The particles are charged with a positive charge . The particles then enter the collection section where they are attracted to the medium(earthed ) and big plates (earthed) and adhere to the these plates . The small plates provide an additional push to the particles as the plates are supplied with 5KC DC and repel the particles which are pushed to the medium and big plates(both earthed). Thus particles of size 0.01 micron to about 20 micron are collected with about 95% or more efficiency The high voltage power supply provides 10KV DC and 5KV DC including earthing and is fully protected against short circuit and overload .
The particles collected in the plates stay adhered to the surface of the plates even when the power supply is switched off , unless dislodged with some force such as pressure air or water , or rapping or wiped .
The filters when choked can be washed periodically using water at about 120bar pressure , dried using clean compressed air and re-used many times during the life of the device . There is no replacement of filters for the life of the device unless physically damaged during handling.
Typically, in accordance with the primary embodiment of the instant invention, the device for air purification includes ultraviolet (UV) light source. The ultraviolet (UV) light source is adapted to function as a germicidal source and to filter the air from the electrostatic filter section. The germicidal ultraviolet (UV) light source is further adapted to render the remaining bio-particles present in the air, non-viable. The ultraviolet (UV) light source in the air purification device includes a pair of ultraviolet lamps with each ultraviolet lamp having the power rating of 15 watt or more and the wavelength of the emitted light radiation from each ultraviolet lamp is 254nm . The pair of aforementioned ultraviolet lamps are completely enclosed within the air purification device and not visible from outside the device( for safety as direct UV light is harmful to eyes).
Typically, in accordance with the primary embodiment of the instant invention, the device for air purification includes a post-filter unit with an anti-bacterial nanoparticle coated media activated by the ultraviolet (UV) light source. The coating includes a combination of silver (Ag) and titanium di-oxide (TiO2) in the form of nano particles impregnated uniquely into a reticulated foam media.
Typically, in accordance with the primary embodiment of the instant invention, the ultraviolet (UV) light source is positioned in such a way as to:
- bathe the plates of said electrostatic filter and to render bio-particles trapped on the plates non-viable;
- render bio-particles in the air received from said electro-static filter non-viable as the bio-particles pass through the (UV) light source; and
- activate the anti-bacterial nanoparticle coating in the post-filter unit.
Typically, in accordance with the primary embodiment of the instant invention, there is provided a power supply unit in the air purification device, adapted to provide electrical power for the functioning of a plurality of electrical units in the device. The power supply unit is self-protected from overload and short-circuit. The opening of the filter access door switches off the electrical circuit of the device to provide safety. The plurality of electrical and mechanical units are suitably mounted in a portable metal enclosure fitted with a set of wheels.
Typically, in accordance with the primary embodiment of the instant invention, a plurality of electrical functional elements are operably coupled with one another via wired connectivity within the air purification device. The air suction unit helps to discharge the filtered air through an air outlet as well as sucking air into the device. The filtered clean air from the complete system is statically neutral.
Typically, in accordance with the primary embodiment of the instant invention, the pre-filter unit, the electrostatic filter section, the ultraviolet light source and the post-filter unit with the anti-bacterial nanoparticle coating are positioned and combined in such a way as to provide a filtration efficiency of about 95% for all particles ranging from about 20 microns to 0.01 microns which includes bio-particles. Furthermore, the air purification device of the instant invention is configured in such a way as to be safe for other electronic devices in the vicinity against electromagnetic interference (EMI) and radio frequency interference (RFI). Still further, all the aforementioned filtering components as used in the air purification device of the instant invention are washable and re-usable except for the post filter media which may be recharged every year or as required. In addition, the statically neutral and bio-particle free exhaust makes the air purification device find applications in the medical field.
The following description is illustrative in nature and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the following detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The accompanying drawings illustrate the best mode for carrying out the invention as presently contemplated and set forth herein after. The instant invention may be more clearly understood from a consideration of the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings wherein like reference letters and numerals indicate the corresponding parts in various figures in the accompanying drawings, and in which:
Fig-1 illustrates a schematic of the arrangement of the mechanical functional and structural elements operably coupled to one another in accordance with an aspect of the principal embodiment of the instant invention; and
Fig-2 illustrates a schematic of the arrangement of the electrical functional and structural elements operably coupled to one another in accordance with an aspect of the principal embodiment of the instant invention; and
Fig-3 illustrates a schematic of the unique arrangement of the electro-static filter module in accordance with an aspect of the principal embodiment of the instant invention.
DETAILED DESCRIPTION OF THE PREFERRED AND ILLUSTRTAED EMBODIMENTS OF THE PRESENT INVENTION
In order to ameliorate and overcome one or more drawbacks and disadvantages associated with the prior art and to provide additional advantages, a novel device for air purification is provided and illustrated herein. Additional features and advantages are realized through the techniques of the disclosure of the instant invention. Other embodiments and aspects of the disclosure of the instant invention are described in detail herein and are considered a part of the claimed invention.
The principle aim of any air cleaning device and the relevant technology is to reduce the airborne particles to a possible minimum. Usually, gaseous media including air do contain dispersed airborne particles. These airborne floating particles can be either solid, or a liquid or a semi-liquid/solid particle whose velocity to settle down in a system is very low due to Brownian motion
These airborne particles can be either dispersed particles (as in dust) or coagulated particles (as in smoke). Further to this, these airborne particles can be either inorganic particles like a metal or a mineral dust, or an organic particles like an animal skin or hair or a hydrocarbon based fuel, or a living particle like a virus or an unicellular algae or a bacteria. Furthermore, these airborne particles can be a visible particle with diameter of more than 10µm or an invisible particle with diameter of 5µm to 10 micron, or smaller particles with size in the range 0.1µm ~ 5µm, or superfine particles of size less than 0.1µm, or a microscopic particle of size in the range 0.25µm ~ 10µm, a super microscopic particle of size less than 0.25µm.
Referring now to Fig-1, the mechanical construction configuration and functioning of the air purification device, in accordance with the most preferred embodiment of the instant invention, is illustrated herewith. the air The purification device includes a pull handle denoted by the reference numeral 14 , a Power ON indicator also functioning as a push button denoted by the reference numeral 12, a set of identical wheels denoted by the reference numeral 19, an air inlet denoted by the reference numeral 16, an air outlet denoted by the reference numeral 17, pre-filter unit denoted by the reference numeral 10, electrostatic filter modules denoted by the reference numeral 9, an ultra violet (UV) light source denoted by the reference numeral 18 and a post-filter unit denoted by the reference numeral 8.
An air suction unit with reference numeral 3 is included in the novel device for air purification. The air suction unit uses a low wattage suction fan. The air suction unit is adapted to suck-in polluted air within any room or from a specific generating source through the air inlet (16) of the air purification device. The air inlet (16) can be augmented at the suction inlet with a suitably designed suction hood using a flexible self-balanced duct or hose in order to suck-in polluted air from a specific generating source into the air purification device.
The pre-filter unit (10) is adapted to function as a media filter to trap particles of the size greater than or equal to 20µm. The electrostatic filter section(9) includes a pair of filter modules adapted to filter the air from the pre-filter unit (10) and to trap particles of the size 0.01µm including bio-particles.
The ultraviolet (UV) light source (18) is adapted to function as a germicidal source and to filter the air from received from the electrostatic filter unit (9). The germicidal ultraviolet (UV) light source (18) further adapted to render the remaining bio-particles present in the air, non-viable. The ultraviolet (UV) light source (18) in the device includes a pair of ultraviolet lamps completely enclosed within the air purification device and not visible from outside the device. The power rating of each ultraviolet lamp is 15 watt (or more). The wavelength of light radiation emitted from each ultraviolet lamp is 254nm.
The post-filter unit (8) is provided with an anti-bacterial nanoparticle coating activated by the ultraviolet (UV) light source (18). The nanoparticle coating includes a combination of silver (Ag) and titanium di-oxide (TiO2)nanoparticles impregnated uniquely into a reticulated foam media.
The pre-filter unit (10), the electrostatic filter modules(9), the ultraviolet light source (18) and the post-filter unit (8) with the anti-bacterial nanoparticle coating are positioned and combined in such a way as to provide a filtration efficiency of about 95%. The filtered clean air is released by the existing air suction unit through the air outlet (17). The filtered clean air released through the air outlet (17) is statically neutral thereby making the air purification device of the instant invention suitable for a plurality of medical applications.
The pre-filter unit (10), the electrostatic filter unit (9), the ultraviolet light source (18) are washable and re-usable. The size of the filtered particles lies in the range of 0.01µm ~ 20µm. The air purification device as disclosed in the instant invention is configured in such a way as to be safe for other electronic devices in the vicinity against electromagnetic interference (EMI) and radio frequency interference (RFI).
The aforementioned ultraviolet (UV) light source (18) in the air purification device of the instant invention is positioned in such a way as to:
- bathe the plates of the electrostatic filter section (9) and to render bio-particles trapped on the plates non-viable;
- render bio-particles in the air received from said electro-static filter modules (9) non-viable as the bio-particles pass through the (UV) light source (18); and
- activate the anti-bacterial nanoparticle coating in the post-filter unit (8).
Referring now to Fig-2, the electrical construction configuration and functioning of the air purification device, in accordance with the most preferred embodiment of the instant invention, is illustrated herewith. In accordance with an aspect of the instant invention, there is provided a plurality of electrical functional elements operably coupled with one another via wired connectivity within the air purification device. Further, there is provided a power supply unit adapted to provide electrical power for the functioning of a plurality of electrical units in the air purification device. In accordance with an additional aspect of the instant invention, the power supply unit is self-protected from overload and short-circuit . Wherein the opening of the filter access door switches off the electrical circuit of the air purification device.
Referring now to Fig-3, the electrostatic filter module (9) is illustrated. The electrostatic filter unit (9) is adapted to filter the air from the pre-filter unit(10) and to trap particles of the size 0.01µm including bio-particles. The electrostatic module consists of aluminium plates of four sizes using stainless rods, aluminium and insulating ceramic spacers, stainless steel frame supports , ceramic insulating bushes, cast tungsten anode wires positioned using stainless steel springs and fasteners,
The plurality of electrical and mechanical units in the air purification device are suitably mounted in a portable metal enclosure fitted with a set of wheels(19) for portability.
From the foregoing description, it will be seen that the instant invention is well adapted to attain all ends, goals and objects herein above set forth together with other advantages which are obvious and inherent to the structure.
TECHNICAL ADVANTAGES AND ECONOMIC SIGNIFICANCE OF THE PRESENT INVENTION
The instant invention provides an effective, affordable and reliable device for air purification that uses a combination of all the three techniques of 2-stage electrostatic filtration using high-voltage ionization and collection , germicidal Ultraviolet light and anti-bacterial nano coated media filter; The filter components of the air purification device of the instant invention consisting a pre-filter and an electrostatic filter modules can be washed and re-used many times for its lifetime. The post-filter may be recharged every year or as required. The air purification device of the instant invention is configured in such a way as to trap bio-particles and render them non-viable making it suitable for suitable for a plurality of medical applications. The air purification device of the instant invention is further configured to release air exhaust which is statically neutral. Furthermore, the air purification device of the instant invention is operably safe with respect to electro-magnetic interference (EMI) and radio-frequency interference (RFI). Additionally, the filtering units of the air purification device in accordance with the instant invention are washable and re-usable except for the post filter nano coated media which is to be recharged every year or as required. As the exhaust from the disclosed air purification device is statically neutral, it finds applications in medical field.
Having now reviewed this detailed description and the drawings of the illustrated and presently preferred embodiment, those ordinarily skilled in the pertinent art will realize that these merely define a presently preferred embodiment of the invention instead of delimitating it. Rather, it must be kept in mind that the scope of the invention, as set forth below, is broad enough to encompass a substantial number and wide variety of embodiments, many of which may not even resemble that depicted and described here. Nevertheless, such additional embodiments will employ the spirit and scope of the invention which is established only by the following claims and their equivalents thereof.