How a Smoke Purifier Works

Remove odors from your home and make the air healthier with a top-rated smoke purifier. These powerful devices use both HEPA filters and activated carbon to capture the dangerous toxins and stubborn smells that accompany second hand tobacco smoke.

The most effective smoke purifiers feature Hepa filters capable of trapping airborne particles down to 0.1 microns, plus a fan that is powerful enough to suck the smoky air into the filter quickly. They also have a high CADR rating and advanced smart features.

HEPA Filter

If you want a smoke purifier that can remove tobacco and wildfire smoke, as well as its associated odours and harmful particles, then look no further than a device with a HEPA filter. These mechanical filters are comprised of a dense forest of tangled fibers pressed into sheets, often folded into pleats to increase surface area and lengthen filter life. Air flows through these fibers and most particles get ensnared by one of three mechanisms:

Diffusion: The smallest, ultra-fine particles move randomly when suspended in airflow and collide with gas molecules or the side of the filter’s fibers. This increases the likelihood that they’ll be stopped by interception or impaction, the latter being more effective at low airflows.

Standard HEPA filters can capture up to smoke purifier 99.7% of airborne smoke particles that are 0.3 microns in size or higher, making them extremely useful for removing smoke from the atmosphere. They’re also very effective for those suffering from respiratory conditions such as asthma or other breathing disorders.

Activated Carbon Filter

An activated carbon filter is a powerful tool that helps remove unwanted odors and harmful pollutants like smoke, VOC and chemicals. It does this by adsorption and chemical reaction. The charcoal has tiny pores and nooks that provide a large surface area to capture the unwanted contaminants.

Activated carbon is one of the most affordable and effective filtration materials available. It is widely used to remove bad taste and odors from drinking water, as a natural pesticide, for livestock feed and in winemaking.

The best activated carbon filters have a high molecular weight and small pore size that maximizes its surface area for adsorption of gaseous contaminants. The process of heating the carbon in the presence of steam or other agents opens up its pore structure and increases its surface area.

There are several different types of activated carbon. The most commonly used type is GAC (granular activated carbon). This form of carbon is made up of loose, granulated carbon particles that allow water to flow through it easily. This type of carbon offers a good balance between odor removal ability and longevity.

Another common type of carbon is PAC (powdered activated carbon). This form of carbon has a finer particle size and offers a higher surface area for adsorption. Activated carbon can also be impregnated with substances that enhance its performance in specific applications. For example, potassium permanganate is added to carbon to improve its ability to remove chlorine molecules from drinking water.

UV Light

Viruses, bacteria and odor-causing molecules can be destroyed by UV light. The light radiation destroys the DNA of microorganisms, making them sterile and unable to reproduce. It also deactivates mold spores and reduces the amount of allergens in the air, which is especially helpful for people with allergies.

UV light works in tandem with high efficiency filtration and ventilation to provide you with the cleanest indoor air possible. Because the light requires prolonged exposure to pollutant particles, it is best used in conjunction with a purifier that moves large amounts of air quickly.

It also helps to remove VOCs, or volatile organic compounds, which are a variety of chemicals that can cause environmental problems. They are found in items like new furniture, rugs and carpets, paints, personal care products and pesticides. They can cause health problems including liver damage, nausea and eye, nose and throat irritation. The UV light in the air purifier deodorizes the chemicals by breaking them down into smaller molecules that can no longer linger in your home.

The UV lamps in an air purifier need to be positioned correctly and have a high intensity to be effective. It is also important that they have the right kind of lamp bulbs to avoid generating too much ozone, which can be harmful to humans and animals. Look for ozone-free bulbs made of quartz or titanium to minimize this problem.

Temperature Sensor

Temperature sensors are present in many different devices and industries that we all interact with on a daily basis. These can include industrial machines and environments where safety standards need to be met, medical applications such as patient monitoring or devices within hospitals or laboratories and even motorsports where engine inlet air temperature, exhaust gas and oil temperature are monitored.

Essentially temperature sensors work on the principle that they can detect temperature changes through electrical signals. This is accomplished through a voltage drop across the transistor base and emitter terminals, which is caused by the change in temperature. The more the temperature rises, the higher the voltage is and vice versa.

In addition to these electro-mechanical types of temperature sensors, there are also smoke purifier a number of non-contact sensor options such as infrared and optical. Non-contact sensors are used where a contact sensor may not be suitable, such as in high temperatures or hazardous environments where a safe distance needs to be maintained.

For more complex or specialised applications, there are a number of thermocouple options. These sensors are made up of two dissimilar metals – often copper and constantan – that are welded or crimped together. Due to the difference in their linear expansion rates, they produce a small mechanical bending movement when exposed to heat, which is detected by the temperature sensor. These are the most accurate temperature sensors available and have a very wide range of operating temperatures (from -200 to +2000oC) and are able to be calibrated easily.