Description:BACKGROUND
Field of Invention
[001] Embodiments of the present invention generally relate to an air purification system and particularly to a water based passive air purification system.
Description of Related Art
[002] In many parts of the world, particularly in rural and roadside communities, air quality remains a pressing concern due to widespread exposure to dust, smoke, and other airborne pollutants. Unpaved roads, open-field cooking, and vehicular emissions contribute to high concentrations of particulate matter within homes and communal spaces. These conditions often aggravate respiratory diseases, reduce overall quality of life, and present significant public health challenges.
[003] Conventional air purification systems, such as those based on High Efficiency Particulate Air (HEPA) filters or electric fans, aim to address airborne contamination but require consistent power sources and frequent maintenance. Their reliance on synthetic components and electricity renders them impractical for low-resource settings where power availability remains inconsistent or entirely absent. As a result, such systems fail to serve the needs of economically disadvantaged or geographically isolated populations.
[004] Traditional low-cost alternatives, including window meshes or wet cotton sheets, demonstrate limited effectiveness against fine dust and smoke particles. These setups neither offer robust filtration capabilities nor sustain performance over time. Moreover, traditional setups lacked in collective implementation of a group of materials and substances for conducting air purification. Furthermore, most of these solutions ignore the potential of renewable materials or passive mechanisms.
[005] There is thus a need for an improved and advanced water based passive air purification system that can administer the aforementioned limitations in a more efficient manner.
SUMMARY
[006] Embodiments in accordance with the present invention provide a water based passive air purification system. The system comprising a structural frame made from bamboo. The system further comprising clay panels interlocked into the structural frame. The clay panels are adapted to allow passive airflow. The system further comprising an air inlet located at a lower portion of the structural frame for enabling an entry of ambient air into the system. The system further comprising a water curtain assembly comprising a gravity-fed water channel, and adapted to soak a filtration surface. The system further comprising a natural multilayered filtration assembly positioned downstream of the water curtain assembly. The natural multilayered filtration assembly comprising an outer jute layer for coarse dust filtration; an intermediate coconut husk layer for moisture retention and medium dust capture; an inner activated charcoal layer for chemical and smoke impurity absorption; and a dust collection chamber configured to passively collect particulate matter and water runoff through gravity-fed water channel. The system further comprising an air outlet located at an upper portion of the structural frame for discharge of filtered air. The system further comprising a solar-powered fan mounted at the air outlet to support airflow, and configured to activate under conditions selected from a low natural wind, a high humidity, a high temperature, or a combination thereof.
[007] Embodiments in accordance with the present invention further provide a method for purifying air using a water based passive air purification system. The method comprising steps of enabling an entry of ambient air into clay panels; capturing large particles in the ambient air using a water curtain assembly; conducting a natural fiber filtration using a natural multilayered filtration assembly; collecting particulate matter and water runoff through a gravity-fed flow channel; and discharging and expelling the filtered air using a solar-powered fan mounted at an air outlet.
[008] Embodiments of the present invention may provide a number of advantages depending on their particular configuration. First, embodiments of the present application may provide a water based passive air purification system.
[009] Next, embodiments of the present application may provide an air purification system that functions entirely without electrical power, making it highly suitable for off-grid rural areas where electricity is either unavailable or unreliable.
[0010] Next, embodiments of the present application may provide an air purification system that employs bamboo, clay, coconut husk, and activated charcoal, materials that are both environmentally friendly and locally available, ensuring sustainable and eco-conscious air purification.
[0011] Next, embodiments of the present application may provide an air purification system that incorporates a water curtain for coarse particles and natural fiber layers for fine particulate matter, enabling comprehensive filtration of both dust and smoke from indoor air.
[0012] Next, embodiments of the present application may provide an air purification system that eliminates factory manufactured air filters, resulting in reduced operational costs.
[0013] Next, embodiments of the present application may provide an air purification system that helps maintain indoor humidity at comfortable levels and introduces passive cooling, improving both air quality and indoor comfort.
[0014] These and other advantages will be apparent from the present application of the embodiments described herein.
[0015] The preceding is a simplified summary to provide an understanding of some embodiments of the present invention. This summary is neither an extensive nor exhaustive overview of the present invention and its various embodiments. The summary presents selected concepts of the embodiments of the present invention in a simplified form as an introduction to the more detailed description presented below. As will be appreciated, other embodiments of the present invention are possible utilizing, alone or in combination, one or more of the features set forth above or described in detail below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and still further features and advantages of embodiments of the present invention will become apparent upon consideration of the following detailed description of embodiments thereof, especially when taken in conjunction with the accompanying drawings, and wherein:
[0017] FIG. 1 illustrates a schematic diagram of a water based passive air purification system, according to an embodiment of the present invention;
[0018] FIG. 2 illustrates a block diagram of a processing unit, according to an embodiment of the present invention; and
[0019] FIG. 3 depicts a flowchart of a method for purifying air using a water based passive air purification system, according to an embodiment of the present invention.
[0020] The headings used herein are for organizational purposes only and are not meant to be used to limit the scope of the description or the claims. As used throughout this application, the word "may" is used in a permissive sense (i.e., meaning having the potential to), rather than the mandatory sense (i.e., meaning must). Similarly, the words “include”, “including”, and “includes” mean including but not limited to. To facilitate understanding, like reference numerals have been used, where possible, to designate like elements common to the figures. Optional portions of the figures may be illustrated using dashed or dotted lines, unless the context of usage indicates otherwise.
DETAILED DESCRIPTION
[0021] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the scope of the invention as defined in the claims.
[0022] In any embodiment described herein, the open-ended terms "comprising", "comprises”, and the like (which are synonymous with "including", "having” and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of", “consists essentially of", and the like or the respective closed phrases "consisting of", "consists of”, the like.
[0023] As used herein, the singular forms “a”, “an”, and “the” designate both the singular and the plural, unless expressly stated to designate the singular only.
[0024] FIG. 1 illustrates a schematic diagram of a water based passive air purification system 100 (hereinafter referred to as the system 100), according to an embodiment of the present invention. In an embodiment of the present invention, the system 100 may be adapted to gather a stream of air, and the gathered stream of air may be purified. Upon purification, the system 100 may cool the stream of air. Further, the system 100 may disperse the purified and cold air into a premise. The dispersion of the cold air into the premise may reduce an ambient temperature of the premise, leading to cooling of the premise. The premise may be, but not limited to, a room, an office, a shopping center, an educational campus, a travelling point, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the premise, including known, related art, and/or later developed technologies, that may be cooled using the system 100.
[0025] The system 100 may be installed in the premise at points such as, but not limited to, a window, a door, an air ventilation duct, a balcony, and so forth. Embodiments of the present invention are intended to include or otherwise cover any points in the premise, including known, related art, and/or later developed technologies, suitable for installation of the system 100.
[0026] According to the embodiments of the present invention, the system 100 may incorporate non-limiting hardware components to enhance the processing speed and efficiency such as the system 100 may comprise a structural frame 102, clay panels 104, an air inlet 106, a water curtain assembly 108, misting nozzles 110, a gravity-fed water channel 112, a filtration surface 114, a natural multilayered filtration assembly 116, an outer jute layer 118, an intermediate coconut husk layer 120, an inner activated charcoal layer 122, a dust collection chamber 124, an air outlet 126, an inner airflow channel 128, a solar-powered fan 130, solar panels 132, and a processing unit 134. In an embodiment of the present invention, the hardware components of the system 100 may be integrated with computer-executable instructions for overcoming the challenges and the limitations of the existing systems.
[0027] In an embodiment of the present invention, the structural frame 102 may be adapted to provide integral strength to the system 100. The structural frame 102 may be constructed of materials such as, but not limited to, a metallic material, a plastic material, and so forth. In a preferred embodiment of the present invention, the structural frame 102 may be constructed on a bamboo material. Embodiments of the present invention are intended to include or otherwise cover any type of the material, including known, related art, and/or later developed technologies, for construction of the structural frame 102.
[0028] In an embodiment of the present invention, the clay panels 104 may be interlocked into the structural frame 102. Further, the clay panels 104 may be adapted to allow passive airflow. The passive airflow may be constituted using an array of micropores on a surface of the clay panels 104. Furthermore, the air, passing via the micropores of the clay panels 104, may be cooled down using a phenomena of evaporation. Therefore, the passively passaged air may be cooler than the air outside of the clay panels 104. Moreover, the rate of cooling of the air passing through the clay panels 104 may be directly proportional to an exterior temperature surrounding the system 100. Higher temperatures may develop a greater delta in the temperature of the air passing through the clay panels 104 compared to lower temperatures.
[0029] In an embodiment of the present invention, the air inlet 106 may be located at a lower portion of the structural frame 102. The air inlet 106 may enable an entry of ambient air into the system 100. Along with the ambient air, the air inlet 106 may receive the cooled air from the clay panels 104. The cooled air may be mixed with the ambient air. The mixing of the air may reduce a temperature of the ambient air, leading to a cooling down of the entered ambient air.
[0030] In an embodiment of the present invention, the water curtain assembly 108 may comprise the gravity-fed water channel 112. The water curtain assembly 108 may be supplied with water from a water source (not shown). The water may be passed onto the filtration surface 114 via the gravity-fed water channel 112. Moreover, the misting nozzles 110 in the water curtain assembly 108 may be adapted to spray and uniformly distribute a thin film of water over the filtration surface 114 without dry spots. The ambient air sourced from the air inlet 106 may be passed through the filtration surface 114 of the water curtain assembly 108. The water in the water curtain assembly 108 may allow the passage of the ambient air sourced through the filtration surface 114. Moreover, the filtration surface 114 of the water curtain assembly 108 may capture the large particles in the ambient air. The large particles in the ambient air may be, but not limited to, carbon monoxide, nitrous oxide, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the large particles, including known, related art, and/or later developed technologies, that may be captured by the filtration surface 114 of the water curtain assembly 108.
[0031] In an embodiment of the present invention, the natural multilayered filtration assembly 116 may be positioned downstream of the water curtain assembly 108. The natural multilayered filtration assembly 116 may comprise the outer jute layer 118 for coarse dust filtration. The natural multilayered filtration assembly 116 may comprise the intermediate coconut husk layer 120 for moisture retention and medium dust capture. The intermediate coconut husk layer 120 may be compacted according to a size of the structural frame 102 of the system 100.
[0032] The natural multilayered filtration assembly 116 may comprise the inner activated charcoal layer 122 for chemical and smoke impurity absorption. The chemical and smoke impurity absorbed by the inner activated charcoal layer 122 may be, but not limited to, volatile organic compounds (VOCs), ozone gas, refrigerants, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the chemical and smoke impurity, including known, related art, and/or later developed technologies, that may be absorbed by the inner activated charcoal layer 122.
[0033] The natural multilayered filtration assembly 116 may comprise the dust collection chamber 124 configured to passively collect particulate matter and water runoff through gravity-assisted flow channels. The particulate matter may be, but not limited to, coarse particles (PM10), fine particles (PM2.5), ultrafine particles (PM0.1), and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the particulate matter, including known, related art, and/or later developed technologies, that may be collected by the dust collection chamber 124.
[0034] In an embodiment of the present invention, the air outlet 126 may be located at an upper portion of the structural frame 102. The air outlet 126 may be adapted to discharge the filtered air. The air inlet 106 and the air outlet 126 may be connected through the inner airflow channel 128. The inner airflow channel 128 may comprise sloped surfaces to direct the entered ambient air sequentially through layers of the natural multilayered filtration assembly 116.
[0035] Further, the discharged filtered air, received in the air outlet 126, may be expelled using the solar-powered fan 130. The solar-powered fan 130 may be mounted at the air outlet 126 to support airflow. The solar-powered fan 130 may be adapted to activate under conditions such as, but not limited to, a low natural wind, a high humidity, a high temperature, and so forth. In another embodiment of the present invention, the solar-powered fan 130 may continually be operated to expel the discharged filtered air in the premise. The solar-powered fan 130 may be controlled and modulated using a control panel (not shown). The control panel may enable a user to modulate operational factors of the solar-powered fan 130. The operational factors of the solar-powered fan 130 may be, but not limited to, a working status of the solar-powered fan 130, a rotational speed of the solar-powered fan 130, an automated ON-OFF of the solar-powered fan 130, and so forth. Embodiments of the present invention are intended to include or otherwise cover any operational factors, including known, related art, and/or later developed technologies, of the solar-powered fan 130.
[0036] In an embodiment of the present invention, solar panels 132 may be arranged on the upper portion of the structural frame 102. In another embodiment of the present invention, the solar panels 132 may be arranged on a rooftop of the premise. The solar panels 132 may be adapted to harness electrical energy from solar energy. The harnessed electrical energy may be adapted to operate the solar-powered fan 130.
[0037] In an embodiment of the present invention, the processing unit 134 may be communicatively connected to the solar-powered fan 130, and to the solar panels 132. The processing unit 134 may further be configured to execute computer-executable instructions to generate an output relating to the system 100. The processing unit 134 may be, but not limited to, a Programmable Logic Control (PLC) unit, a microprocessor, a development board, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the processing unit 134 including known, related art, and/or later developed technologies. In an embodiment of the present invention, the processing unit 134 may further be explained in conjunction with FIG. 2.
[0038] FIG. 2 illustrates a block diagram of the processing unit 134, according to an embodiment of the present invention. The processing unit 134 may comprise the computer-executable instructions in form of programming modules such as a data receiving module 200, a data sensory module 204, and an activation module 206.
[0039] In an embodiment of the present invention, the data receiving module 200 may be configured to receive an amount of the electrical energy harnessed by the solar panels 132. The data receiving module 200 may be configured to receive the conditions from the solar panels 132. For example, a high amount of harnessing of the electrical energy may denote a sunny condition. On the contrary, a high amount of harnessing of the electrical energy may denote a cloudy and/or a rainy condition. The amount of the electrical energy and the conditions may be transmitted to the data sensory module 204.
[0040] The data sensory module 204 may be activated upon receipt of the amount of the electrical energy and the conditions from the data receiving module 200. In an embodiment of the present invention, the data sensory module 204 may be configured to interpolate a requirement of activation of the solar-powered fan 130 based on the amount of the electrical energy and the conditions. For example, rainy conditions may develop humidity, to overcome the humidity and circulate fresh air on the premise, the solar-powered fan 130 may be operated. Further, if the electrical energy harnessed may be sufficient to operate the solar-powered fan 130, in such case, the data sensory module 204 may transmit an activation signal to the activation module 206. Else, the data sensory module 204 may reactivate the data receiving module 200 to receive the amount of the electrical energy harnessed and the conditions.
[0041] The activation module 206 may be activated upon receipt of the activation signal from the data sensory module 204. In an embodiment of the present invention, the activation module 206 may be configured to activate the solar-powered fan 130 for circulation and supporting airflow of the filtered and cooled air in the premise.
[0042] FIG. 3 depicts a flowchart of a method 300 for purifying air using the system 100, according to an embodiment of the present invention.
[0043] At step 302, the system 100 may enable the entry of the ambient air into the clay panels 104.
[0044] At step 304, the system 100 may capture the large particles in the ambient air using the water curtain assembly 108.
[0045] At step 306, the system 100 may conduct natural fiber filtration using the natural multilayered filtration assembly 116.
[0046] At step 308, the system 100 may passively collect the particulate matter and the water runoff through the gravity-fed water channel 112.
[0047] At step 310, the system 100 may discharge and expel the filtered air using the solar-powered fan 130 mounted at the air outlet 126.
[0048] While the invention has been described in connection with what is presently considered to be the most practical and various embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.
[0049] This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined in the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements within substantial differences from the literal languages of the claims. , C , Claims:CLAIMS
I/We Claim:
1. A water based passive air purification system (100), the system (100) comprising:
a structural frame (102) made from bamboo;
clay panels (104) interlocked into the structural frame (102), wherein the clay panels (104) are adapted to allow passive airflow;
an air inlet (106) located at a lower portion of the structural frame (102) for enabling an entry of ambient air into the system (100);
a water curtain assembly (108) comprising a gravity-fed water channel (112), and adapted to soak a filtration surface (114);
a natural multilayered filtration assembly (116) positioned downstream of the water curtain assembly (108) and comprising:
an outer jute layer (118) for coarse dust filtration;
an intermediate coconut husk layer (120) for moisture retention and medium dust capture;
an inner activated charcoal layer (122) for chemical and smoke impurity absorption; and
a dust collection chamber (124) configured to passively collect particulate matter and water runoff through the gravity-fed water channel (112).
an air outlet (126) located at an upper portion of the structural frame (102) for discharge of filtered air; and
a solar-powered fan (130) mounted at the air outlet (126) to support airflow, and configured to activate under conditions selected from a low natural wind, a high humidity, a high temperature, or a combination thereof.
2. The system (100) as claimed in claim 1, wherein the water curtain assembly (108) comprises misting nozzles (110) adapted to uniformly distribute a thin film of water over the filtration surface (114) without dry spots.
3. The system (100) as claimed in claim 1, wherein the air inlet (106) and the air outlet (126) are connected through an inner airflow channel (128) having sloped surfaces to direct the air sequentially through layers of the natural multilayered filtration assembly (116).
4. The system (100) as claimed in claim 1, comprising solar panels (132) adapted to harness electrical energy from solar energy, wherein the harnessed electrical energy is adapted to operate the solar-powered fan (130).
5. The system (100) as claimed in claim 1, wherein the chemical and smoke impurity absorbed by the inner activated charcoal layer (122) are selected from, volatile organic compounds (VOCs), ozone gas, refrigerants, or a combination thereof.
6. The system (100) as claimed in claim 1, wherein the particulate matter is selected from, coarse particles (PM10), fine particles (PM2.5), ultrafine particles (PM0.1), and so forth.
7. The system (100) as claimed in claim 1, wherein the filtration surface (114) is adapted to capture large particles in the ambient air.
8. A method (300) for purifying air using a water based passive air purification system (100), the method (300) is characterized by steps of:
enabling an entry of ambient air into clay panels (104);
capturing large particles in the ambient air using a water curtain assembly (108);
conducting a natural fiber filtration using a natural multilayered filtration assembly (116);
collecting particulate matter and water runoff through a gravity-fed water channel (112); and
discharging and expelling the filtered air using a solar-powered fan (130) mounted at an air outlet (126).
9. The method (300) as claimed in claim 8, wherein the particulate matter is selected from, coarse particles (PM10), fine particles (PM2.5), ultrafine particles (PM0.1), and so forth.
10. The method (300) as claimed in claim 8, wherein the solar-powered fan (130) is operated by an electrical energy harnessed using solar panels (132).
Date: July 01, 2025
Place: Noida

Nainsi Rastogi
Patent Agent (IN/PA-2372)
Agent for the Applicant