How do the big ones are DIY air purifiers?

How do the big ones are DIY air purifiers?

The haze is coming again, closing the doors and windows, pretending that the thick smog can’t come in (be strange), as well as the harmful pollution released by interior decoration materials, artificial panels, composite furniture, and the second-hand smoke that floats… These are the pains that can breathe!

“Save the Breath” is a matter of people’s livelihood. Not long ago, Blueair and the Nutshell Network held a DIY Air Purifier Competition. The vast shells were also open-minded and submitted a variety of “empty net solutions”. Let’s take a look at their concept sketches~

[Secondary soul painting] by the stinky gardener

The mobile purifier, based on Hayao Miyazaki’s “Hal’s Moving Castle”, can also fly.
Metal detector, 24K infrared laser eye, largemouth strong inhalation, top pipe output, let the bacteria all dogs.

[Please accept your knees] by the peninsula

Installed on the roof, it does not occupy space and is beautiful and elegant, that is, the filter replacement is not convenient.
Based on the UFO flying saucer, it has six sides and needs a remote control.

[Future Black Technology] by geeks who love the above art

Stepping on a spinning bike provides a source of power for the machine, both fitness and environmentally friendly.
According to the principle of the electrostatic copier, the smog particles are mixed into the ink, and the input text can be printed.

However, only “Alans” successfully entered the three yuan

Acrylic shell + HEPA filter + activated carbon net + fan + power module, from prototype design to DIY production, netizen “-Biu took a big-” took 3 days. She gave this boxy machine a lovely name: Alans.
Dubai VS Olansi

So, what is the strength of the new DIY air purifier “Olans”? The shell net came in. Blueair’s most representative Pro L air purifier, in an enclosed glass room with a site of about 15 square meters, held an informal friendly match between the two sides.

Task 1
Spread the board with formaldehyde and then minimize the concentration of formaldehyde in the air within 30 minutes.

Task 2
Simulate the normal indoor environment and then minimize the PM2.5 concentration in the air as much as possible within 30 minutes.

It can be seen from the results of the competition that “Auslanes” has been listed by professional player Blueair “Dubai” in both the formaldehyde project and the PM2.5 project.

Where is the DIY air purifier lost? Is there a problem with the production materials? Or is there a design omission? With these questions, we conducted a comprehensive analysis.

Material selection and process: the foundation laid from the body

▲Production of the acrylic sheet used by Allan

The outer shell of the Australian is acrylic, it has good transparency and plasticity, and most importantly it is cheap. First, cut with a laser, then use a glue gun to bond and seal, the final physical shape looks quite similar…

However, it is just like a model. Industrial grade air purifiers have many features in the selection of materials, processes and product design. Blueair uses solid alloy steel that does not produce harmful substances or cracks like industrial plastics but also has sound and noise resistance.

Blueair’s chief designer, Mr. Magnus, shared his design philosophy: “For Blueair, quality is as important as beauty. Every part is carefully selected and durable. We chose not to use plastic. Rugged galvanized steel, and it doesn’t contain a lot of harmful substances like plastic, you only need to replace the filter to ensure that the product has been used for many years.”

Wind tunnel design: open up the lung capacity, and “do not fight”

▲The fan used in making Alans

The right and top of the Olans enclosure are air inlets and outlets, but after confirmation by Blueair engineers, the air ducts were designed to be oversized and violated safety regulations. The sound control of Olans is also not good. The average noise of 1 minute is 58 decibels, which is close to the loud talk.

The Blueair Pro L uses a right-in and left-out air duct design. In order to expand the contact area with the air, the internal filter screen is also designed as a V-shaped, two filters can be placed at the same time, and there are two correspondingly. The ultra-quiet fans run synchronously and the low-speed running noise is only 29 decibels. A reasonable air duct design not only helps to capture more dirty air but also sends out more clean air, which also helps to reduce “wind noise”.

Filtering: Don’t let the “filter” fight alone

▲Production of the universal filter used by Alans

Olansi uses the common activated carbon particle filter and HEPA filter on the market, but we can clearly see in the PM2.5 test: when the particle content drops to about 60, no matter how many cycles of filtration, the value Can not fall down; and formaldehyde, only purified about 27%.

So is it better to change the denser filter? If the filter is made thick and dense, although the capture rate can be increased, the wind resistance is also increased, eventually, the air volume is insufficient, and the energy consumption and noise are also increased.

How is Blueair solved? Blueair uses an ultra-quiet patented technology, HEPASilent®, which combines electrostatic and mechanical filtration to deliver more clean air with minimal energy consumption and noise. All products are certified to “zero ozone” by ARB testing. Without any harmful emissions.

For gaseous pollutants such as formaldehyde, Blueair has developed a new activated carbon filter: the honeycomb structure is removed, the wind resistance is smaller, and the contact surface is more sufficient; the alumina carrier with better activity is used, the microporous structure is more developed; the cold catalyst content is increased by 3 times. Capturing formaldehyde is more powerful. After a new upgrade, the Blueair filter has reached the highest national CCM level and can capture more air pollutants at the same time.

CADR: Race against time

An important indicator for choosing an air purifier is CADR, which is simply the volume of air purified per unit of time. Indoor air is flowing dynamically. Ingress, cleaning, ventilation, and walking will increase the number of impurities in the air. If the CADR is not high enough, the purification speed will not keep up with the continuous generation of pollution.

In fact, through the test results, we can see that the CADR of Aol’s is much lower than that of Blueair, but how strong is the CDAR value of the Blueair Pro L up to 700m3/h?

In a 45-square-meter meeting room, the shell network tested the performance of the Blueair Pro L: after 90 minutes, the concentration of PM2.5 in this room dropped from 128μg/m3 to below 5.84μg/m3… And this is not the limit, the Blueair Pro L can be used for up to 84 square meters of space.

Detection: not let go of every corner

The actual use of the air purifier is very important. We open the air purifier every day. Is the indoor air really getting better?

In order to detect the actual effect of the air purifier, it is not enough to measure the data of the tuyere. The air purifier will first purify the nearby air, but the indoor air is always flowing, and people will walk around every corner of the room, so the correct method should be to measure every corner of the room. When the entire room was cleaned, the air purifier really worked.

Professional instruments are also indispensable during the testing process. In order to solve the problem of expensive instruments, Blueair provides users with free on-site air detection services. Experienced inspectors will never let go of any corners. Finally, detailed inspection reports will be issued, and the actual use of the products will be clear at a glance.

Technology: Serving a better life

The technology stems from a curiosity about the unknown, and the exploration of the limits, Blueair engineers prefer to use technology to make life better. By comparing with the DIY air purifier, we found that in order to truly master the technology and produce excellent products, professional knowledge and dedication are indispensable.

The Smart Age has been launched, and Blueair has also launched the smart app Blueair Friend and the smart detection product Blueair Aware and recently launched the live view Air View by Blueair. Air View, like Google Earth, contains 360° real-life photos of major cities around the world. The data is updated daily in real-time, and China is also planning to include it in the future.

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