The History Of Air Purifier
Air purifiers have been around for centuries, with the first recorded use in the 17th century. Early air purifiers were used to remove odors and pollutants from the air, but it wasn't until the late 19th century that air purifiers began to be used for the purpose of cleaning the air.
The first air purifier was invented in 1871 by John Stenhouse, a Scottish chemist. Stenhouse' s air purifier was a white, cone-shaped device that sat on a table. It had a fan that pulled air through a layer of cotton wool, which filtered out dust and other particulates.
In 1885, another air purifier was invented by an American, George E. Freeth. Freeth's air purifier was a more sophisticated device than Stenhouse's. It had a series of metal plates that were electrically charged. These charged plates attracted and trapped dust particles and other pollutants.
Air purifiers became increasingly popular in the United States in the 1930s and 1940s, as concerns about air pollution increased. Air purifiers were used in homes, offices, and factories tore move dust, smoke, and other contaminants from the air.
In the 1950s, air purifiers began to be used in hospitals to help prevent the spread of airborne diseases. Air purifiers were also used in public buildings, such as schools and libraries, to improve indoor air quality.
In the 1960s, advances in air-purifier technology led to the development of portable air purifiers. These devices could be used in cars, RVs, and boats to remove pollutants from the air.
In the 1970s, air purifiers were introduced that could remove a wide range of pollutants, including bacteria and viruses. These devices, known as HEPA (high-efficiency particulate air) filters, are still used today in many air purifiers.
In the 1980s, ozone generators were introduced as a way to remove pollutants from the air. Ozone is a gas that is formed when oxygen molecules are broken apart by electrical discharge. Ozone generators produce ozone by passing air through a high-voltage electrical field.
Ozone generators were found to be effective at removing a wide range of pollutants, including viruses, bacteria, and mold spores. However, they also were found to produce harmful by-products, such as formaldehyde and carbon monoxide. As a result, ozone generators are no longer widely used.
In the 1990s, air purifiers that used ultraviolet (UV) light were introduced. UV light is a type of electromagnetic radiation that is invisible to the human eye. UV light can kill bacteria and viruses by damaging their DNA.
Air purifiers that use UV light are effective at removing a wide range of contaminants, including bacteria, viruses, mold spores, and dust mites. UV air purifiers are used in a variety of settings, including homes, hospitals, and office buildings.
Air purifiers have come a long way since the first one was invented in the 17th century. Today, there are a variety of air purifiers available that can remove a wide range of pollutants, including bacteria, viruses, mold spores, dust mites, and smoke.