[IP Encyclopedia] How a Home Air Purifier become an essential appliance?

Air purifier [Photo provided : imagetoday]

Patent Application : Electric precipitation (US1016476A)

Year : 1911

Country : U.S.A

Region : Oakland State of California

Name : Frederick Gardner Cottrell

It is not long history to check concentration of fine dust in the public broadcasting news. Problem of fine dust caused from yellow dust of China chemical factory and exhaust gas of car deeply comes to our life. Due to this it is essential to buy an air purifier that purify the indoor air in home now in the IP encyclopedia lets take a look at the Air purifiers history of patent that means 21 centurys problem of air pollution.

Water and Air is essential element for human being to live. It can be seem easily around our life before few decades ago we had a question of Will the day come to buy an air in the future? but we are currently living in the era that buys water.

Now if we ask a question that Will the day come to buy an air in the future? to people we could receive an answer It can be sufficiently possible. Of course the day have not came yet. But the circumstance is that it has faced the circumstance to purify the air. Purifier is the intellectual property that signs great crisis that we have faced with.

When is the start of purifiers creation? The technology which purify the air was not developed for indoor air purifier simply. Before long ago the technology Purify is needed for various reason first of all the biggest reason was the first industrial revolution.

In the England where it is the home of the Industrial revolution the factory had appeared in the middle of Londons vicinity that has much manpower in the 19 century. At that time next to the Buckingham palace where Queen Victoria lived in there were many woolen stuff factories birthplace of that widespreadly existed in the London. At that time in the most of the factory people live in the vicinity of factory were not free from black soot of coal and sulfurous acid gas.

Coal was widespreadly used in the home. In the numerous household fireplace was used for heating system in the winter the coal was the main base material. The problem was that fire accident frequently appeared but there was no fire trucks and the action that fire fighters were getting into the fireplace happened many times. The things which was invented for the fire fighters and general citizen was the Gas mask for fire fighter.

Early gas mask was developed by John Stenhouse who was chemist of Scotland in the 1854 and John Tyndall has enhanced the gadget for respiratory organ by developing a hood that filters a bad air and smoke from air.

By being commercialized the gas masks the protective device was arranged from gas when the fire accident occurs there was no way to prevent the radical air pollution. Including England in the advanced country rushing into industry revolution everywhere the special measures were needed for the fumes that was caused from coal chemical factory which destroy the center of cities.

In the late 19 century Dr. Frederick Cottrell developed a Electrostatic Precipitator filtering dust in the air by using static shock in the Oakland of California U.S.A. This technology has performances that filters the fine and highest heat smoke particles that are attached to the thermal power plant chimney therefore could not be easily filtered. The technology Electrostatic Precipitator was revolutionary to the extent that calls the beginning of air purifier. Since then it was used at device which purify the various air.

After the time the revolution occurred once again about Air purifier ironically due to the Manhattan Project which stance for the U.Ss creation of atom bomb it occurred. After the first World War from 1914 to 1918 U.S.A and Europe powers competed ardently to get military equipment.

In the case of U.S.A that has especially risen up as a world superpower through war very powerful weapon was needed which is able to solve the wasteful competition of armament at once. In this background development of atomic bomb was discussed. Of course the opposition was severe. Because radioactive dust diffusion caused from throwing down atomic bomb seems potent. In the U.S.A possibility of accident of bomb misfire caused by accident have to be considered the strict level of necessity for air purifying was raised for workers who had worked in the radiation factory.

The invention which was developed by this reason was HEPA Filter. HEPA means High Efficiency Particulate Air which is abbreviation made from a first note of each word. In a nutshell it means filter that filters numerous harmful particle being stacked up in several wrinkle filter like a paper. HEPA filter is efficient air filter it was commercialized as each air purifying filter in 1950.

It was early 20 century that modern air purifier which is known for nowadays was made. Because the demand of air purifier arose by changing the aspect of industry for numerous developed countries including the U.S.A. Buildings were increasing and space that was narrow and confined space was raised also air pollution was extended to severe level. By increasing people who demand for the pure space they rushed into the development of air purifier at the industry of home appliance.

By using Electrostatic Precipitator which was already developed and with the function of HEPA filter air purifier has been made. Especially in this period mass production of high performance filter which had economic feasibility was possible and it had long life span due to development of aerospace technology. The first air purifier was invented through the process of building a extent scale building. If you look at an ‘Air filtration system’ patent applicant in 1966 patent of Ronald H. Deibert who was Air A Medic Corps researcher you can see the iron barrel of ventilation shape that is found at company building and in the middle of iron barrel it was designed as a shape installed air purifying filter. It takes numerous installation fee so it is possible in the system which is only scale of company.

The demand of air purifying in the home has been rising by achieving pure atmosphere in the working space. The installation of air filter system in every household had no efficiency for aspect of productivity and economic feasibility so air purifier which were not created together with the building equipment in the household has been developed as a independent of product.

Air purifier which was a form that you just need to connect to the concent and has portability has been developed for the first time without special equipment production. For the related patent there is ‘Air purifier’ patent of Marron Hak who was researcher of Hamilton Beach Brands Inc in 2000s. Since then home air purifier has been developed accompanying with various filter performance until now.

The filtering way of indoor air purifier which are being released in the market currently is able to be classified in 3 types. At first the filter type air purifier which is widely used is the way to discharge air that is purified through filter after absorbing air by using spun fan. The air that came in were filtered out through HEPA filter the smell is absorbed using activated carbon. Nowadays there is model using ULPA filter that has better performance than HEPA.

Next ion air purifier is a way to attach particulate among the air discharging ion to air by flowing high voltage to electrode that has a certain distance and remove the particle by attracting to +pole Electrostatic Precipitator. It has advantage in that it has low power consumption and silence. The disadvantage is that it is ineffective in the large space and takes long time to purifying the air and the biggest problem is that it makes ozone particle by combining with oxygen molecule.

Finally Electrostatic Precipitator air purifier is a way to use the principle of electric discharge like ion way. It purifies the polluted air by precipitation that has strong dust collecting power in other words it is called as a anion purifier or filterless purifier. Unlike the ion type it is used with a fan has low maintenance cost and has great advantage of enhancing the efficiency if you use in the dust circumstance. However efficiency of absorbing dust was not good compared to HEPA and also it has disadvantage that regular cleaning is needed because the inside of the device gets dirty easily.

South Korea is always sensitive to air purifying due to density of fine dust and yellow dust from China. Due to the reason the circumstance are installing air purifier as a basic option at many officetels (Dual-purpose buildings used for commercial and residential purposes) and new apartment. In the human beings long history the necessity of air purifier has not been focused greatly. The short history of air purifier could be the By others faults wise men correct their own that let us know the seriousness of air pollution in the earths air pollution. We hope that The day of buying an air in the future will not arrive by following the climate agreement well.

Air purifier filter [Photo provided : imagetoday]

John Stenhouses Fire fighter gas mask [Photo provided : Wikipedia]

Frederick Gardner Cottrells ‘Electrostatic Precipitator patent [Photo provided : Google patents]

George T Carties HEPA filter patent [Photo provided : Google patents]

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