FIELD OF INVENTION:

The invention relates to an air purifying device. More particularly it relates to a device which improves the air quality index value.

BACKGROUND OF THE INVENTION:

Air Quality Index (AQI) is a standard value which generally measures the amount of acidic oxide such as (CO)x (NO)x, (SO)x and particulate matter which are unhealthy and a big concern in recent times. If air has low value of AQI then the air is termed as healthy whereas air with high AQI is considered as health hazards. Because when AQI values are above 100 ppm, air quality is considered to be unhealthy, especially for members of populations at greatest risk of a health effect, such as person having asthma, bronchitis and other breathing issues. It is not safe for entire population as if AQI values gets higher (greater than 200ppm).

In 2018, the World Health Organization (WHO) estimated that about 7 million people die each year as a result of breathing tiny particles in contaminated air. In addition, diseases including stroke, heart disease, lung cancer, chronic obstructive pulmonary disease, and respiratory infections including pneumonia develop. According to the WHO, air pollution kills about 700,000 children each year.

Vehicle and industrial pollution are the most common causes of air pollutants, and both are connected to climate change, consequently it indicates that global warming is affecting around the globe.

Every year during the winter season, harvested leftover crops’ burning produces a blackout in the northern region of our country. It was the first thought, but after profound study of the surroundings, it was determined that it was fossil fuel, which is also a by-product of plants and animals. CO, CO2, SO2, NO, NO2 at very high concentrations are the end result of combustion. It also causes a large number of particles to get suspended in the air. All of these issues together implicate that innovation is taking shape.

The seriousness of the issue can be seen from the below data:

Air purifiers have been developed to remove the health risks associated with poor air quality. Currently, a big smog-towers have been installed in few of the cities of India. They require a special set-up for installation calling for high monetary expenses. There are few air purifiers which works in close environment. While working on air pollution they contribute to noise pollution. Thus, there was a need of a system or device which will reduce the air pollutants and improve the air quality index of surrounding air. Current invention fulfils this need. Rapidly rising pollution levels and an increase in airborne illnesses are the primary reasons of developing the current invention. It’s a device which will not require any special set-up to install as in case of the smog-towers. It is a cost effective and silent device.

SUMMARY OF INVENTION:

The invention in first aspect elates to an air purifier device (100) which comprises a) a lower chamber (10) with perforated surface for passage of polluted air inside it; b) an air filtration cartridge (20) having a hollow cavity surrounded by a first innermost layer of Corchorus olitorius coated with lithium peroxide, a second layer of Corchorus olitorius coated with activated carbon, a third layer of Corchorus olitorius coated with ammonium alum, a fourth outermost layer of Corchorus olitorius and placed inside and surrounding the inner surface of said lower chamber (10); c) an upper chamber (30) with perforated surface for passage of purified air outside it; and d) a layer of Corchorus olitorius placed inside and surrounding the inner surface of said upper chamber (30).

In another aspect of the invention the lower chamber has a suction fan (30) to suck the outside air inside. Further the lower chamber (10) and upper chamber (30) may have air quality index sensors (50, 60) thereon. Additionally, said suction fan (30) can be connected to air quality index sensor (50) on the lower chamber (10) and it receives the instructions from said sensor to start and suck the outside air inside the lower chamber (10).

BRIEF DESCRIPTION OF THE DRAWING:

The embodiments herein will be better understood from the following detailed description with reference to the drawings, in which the reference numerals indicate:

FIGURES 1A and IB illustrates the perspective view of the air purifier device of the present invention; FIGURES 2A, 2B, 2C and 2D illustrates the first, the second, the third and the fourth layer of the cartridge (20);

FIGURE 3 illustrates the working of the air purifier device of the present invention; FIGURE 4 illustrates the construction of the air purifier device according to one of the preferred embodiments of the present invention;

FIGURES 5A and 5B illustrates the top view and the bottom view of the lower chamber and the upper chamber respectively according to one of the preferred embodiments of the present invention; and

FIGURES 5C and 5D illustrates the top views of the lower chamber fitted with the suction fan according to one of the preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE INVENTION:

The air purifier, sometimes known as an air cleaner is a device that eliminates impurities from the air. They are especially beneficial for persons who suffer from allergies and asthma.

As mentioned, there remained a long felt need to provide a system or device which will reduce the air pollutants and improve the air quality index of surrounding air. The present embodiments try to address this long felt need.

To explain specifically, an air purifier device (100) comprises a) a lower chamber (10) with perforated surface for passage of polluted air inside it; b) an air filtration cartridge (20) having a hollow cavity surrounded by a first innermost layer of Corchorus olitorius coated with lithium peroxide, a second layer of Corchorus olitorius coated with activated carbon, a third layer of Corchorus olitorius coated with ammonium alum, a fourth outermost layer of Corchorus olitorius and placed inside and surrounding the inner surface of said lower chamber (10); c) an upper chamber (30) with perforated surface for passage of purified air outside it; and d) a layer of Corchorus olitorius placed inside and surrounding the inner surface of said upper chamber (30).

Referring to FIGURES 1A and IB, in one of the preferred embodiments the said lower chamber (10) and said upper chamber (30) are in cylindrical shape. Preferably these chambers are made of metal and more preferably iron can be suitably employed for this purpose. The lower chamber (10) and the upper chamber (30) have perforated surfaces, preferably their surfaces have hexagonal shaped perforations. The bottom end of the lower chamber (10) and the top end of the upper chamber (30) are closed by lids. FIGURES 5A and 5B illustrates the top view and the bottom view of the lower chamber and the upper chamber respectively according to one of the preferred embodiments of the present invention.

The air filtration cartridge (20) is placed at the periphery of the lower chamber (10). It has a hollow cavity surrounded by four layers. These four layers form the sandwich structure. The first innermost layer is of Corchorus olitorius coated with lithium peroxide, the second layer is of Corchorus olitorius coated with activated carbon, the third layer is of Corchorus olitorius coated with ammonium alum and the fourth outermost layer is of Corchorus olitorius. It is placed inside and surrounding the inner surface of said lower chamber (10). Its placement can be seen in FIGURE 4.

The device (100) when placed at air pollution prone area suck the atmospheric air inside the lower chamber (10) which first passes through the cartridge’s (20) first layer to filter out the dust and smog and the filtered air is then transferred to the second layer which promotes particle collision by neutralizing oppositely charge aerosols/colloidal particles. It coagulates the pollutant aerosols that can be adsorbed on the third layer. In addition, the third layer adsorbs pollutant gasses. The fourth layer absorbs majority of automobile gaseous pollutants which are acidic in nature and releases oxygen as an outcome of disproportionation reaction.

It releases oxygen in the atmosphere. Oxygen plays the key role in the environment. As an added and significant advantage, it absorbs acidic pollutant oxides and release oxygen gas.

The purified air rich in oxygen travels towards the upper chamber (30) and is released in the atmosphere after passing through the Corchorus olitorius placed inside and surrounding the inner surface of said upper chamber (30). This processflow an be quickly understood from the FIGURE 3.

Referring to FIGURES 5C and 5D, in a one of the preferred embodiments, the lower chamber may have an additional suction fan (40) to suck the outside air inside. In yet another preferred embodiment of the invention, the lower chamber (10) and said upper chamber (30) have air quality index sensors thereon (50, 60). These sensors measure the quality of input and out air respectively. In another preferred embodiment of the invention, suction fan (40) is connected and receives instructions from said air quality index sensor (50) on the lower chamber (10). It turns on when the air quality index value sensed by and communicated by the sensor (50) is high so as to purify the air at accelerated speed.

The cartridge can be replaced periodically. The time of replacement of the cartridge depends on weather, traffic etc. The sensors and suction fan can be connected to the data analyser and data processor and the device can be monitored remotely by a centralised unit.

The example mentioned below are the best method of performing the invention which is known to the applicant. They in no way construed to limit the scope of invention to the mentioned ingredients only or to their specific quantities only.

Example 1: Construction of the air purifier device (100)

The device of the current invention was constructed in following specifications:

Air filtration cartridge (20) composition:

The air filtration cartridge (20) was fixed inside the lower chamber (10) as can be seen in FIGURE 5A. It was placed inside and surrounding the inner surface of said lower chamber (10) using nut and bolts A layer of Corchorus olitorius was placed inside and surrounding the inner surface of said upper chamber (30) as can be seen in FIGURE 5B. It was placed using nut and bolt

An suction fan (40) with power 2500 rpm operating at 240V generating 60W was installed at the open top end of the lower chamber as can be seen in FIGURE 5C. The upper chamber (30) was placed vertically above the lower chamber (10) as can be seen in FIGURE IB.

The air quality index sensors (50, 60) were installed on lower chamber (10) and upper chamber (30) respectively.

Example 2: Testing of the air purifier device (100) in open polluted environment

The device (100) was kept at Sakinaka junction for 3 days. This place is usually highly air polluted. Using sensors (50, 60) the air quality index readings in ppm were recorded as below:

Oxygen value was qualitatively measured using pyrogallol solution with inlet and outlet air. The intensity of brown colour of alkaline pyrogallol solution indicated that the amount of oxygen in the outlet was more.

Example 3: Testing of the air purifier device (100) without installing entire cartridge (20) but with only few layer and then with cartridge (20)

Case 1:-

The device was taken to Mahindra signal and there it was installed for 1 hours, where AQI values in ppm for different layers (prepared according to example 1) were monitored using sensors (50, 60)

Initially only Corchorus olitorius layer readings were taken which are as follows:

Then the Corchorus olitorius coated with ammonium alum layer readings were taken which are as follows:

Then the Corchorus olitorius coated with lithium peroxide layer readings were taken which are as follows: Then the cartridge (20) was installed and the readings were taken which are as follows:

These tests underlined the air purification efficiency of the device (100) with the cartridge (20). Example 4: Testing of the air purifier device (100) in a close domestic environment

The mosquito repellent stick was used as pollutant.

Using sensors (50, 60) the air quality index readings in ppm were recorded as below:

Above test results again underlined the air purification efficiency of the device (100).

Economic aspects:

A device mentioned in example 1 covers a radial distance of up to 5.25 meters for air purification and thus successive units may be installed at a gap of 10 meters from each other. Considering the average level of pollution to be 300 PPM for 12 to 15 hours a day a cartridge sustains for 15 days. It’s refilling cost around rupees 150/-/unit thus the annual refilling cost approximately rupees 3000/-/unit considering two months of rain will settle particulate matter and the consumption of cartridge would be reduced. Running a street light lamp for a year also need minimum Rs. 4,000/- per lamp post. Thus, the current device is cheaper than the cost needed for running a street light lamp for a year and is very economic.