Is the air purifier really useful? Still psychological?

Is the air purifier really useful? Still psychological?

Seeing that the moon is approaching, the smog seems to be full of blood and mouth, step by step.

An aerosol system consisting of tiny water droplets or ice crystals;
Niobium is a collection of particles such as dust, sulfuric acid, nitric acid, and organic hydrocarbons in the air.

There is no doubt that it is harmful and not too shallow.

When the haze gradually approached the city, some people screamed and some people closed their doors.

Before, a friend who was not familiar with me asked me a very sharp question, saying:

“You old let me open the window to ventilate and smell, is the smog coming over?”

Me: (I just returned to Chengdu soon) “Is Chengdu smog serious?”

“That can be dripping, in the winter, the gray outside, the whole follow-up of the coal kiln, black smoke.”

Me: “Is the purifier open?”

She: “Is that awkward thing?”

The official explanation is products that can absorb, decompose or convert various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde, and other decoration pollution, bacteria, allergens, etc.) and effectively improve air cleanliness.

However, the best quality room air purifier may be a gimmick, is it really useful? Will it be just a psychological effect?

However, the best large room air purifier was not invented because of smog.

In 1823, in order to prevent firefighters from being exposed to smoke during firefighting, John and Charles Dean invented a smoke protection device, which is the prototype of a modern air purifier.

After a long time, a warrior named Hans Tenghaus, after many attempts discovered that charcoal could filter out harmful gases in the air and used it on the air purifier.

Later, when World War II broke out, the US government did not allow them to be exposed to radiation and other substances in order to protect the scientific research workers, so they developed a HEPA filter.

In the 1950s and 1960s, HEPA filters were very popular.

HEPA filter: interwoven with very fine organic fibers, the capture particles are extremely strong, and can remove at least 97.00% of the airborne particles 0.3-micrometer diameter.
The development of the industry has intensified the deterioration of the air. At the end of the 20th century, the air purifier began to turn, and the home air purifier began to appear. The function began to become diverse. Before World War II and before, the main function of the purifier was to remove the stench in the air. And harmful chemical gases, etc., and now the purifier function has been greatly expanded, bacteria, viruses, dust, pollen, mold spores, formaldehyde and so on.

The air purifier can be said to be an indoor artifact, of course, the premise is that you have to buy a regular quality-assured product.

First of all, your attention to the following concepts:

CADR value: refers to the amount of clean air. The air purifier provides the clean air rate of the air purifier according to the parameters of the target particulate matter purification ability under the rated state and the specified test conditions.
In other words, it is the ability of this machine to purify the air.

CCM refers to the cumulative purification amount, that is, the total amount of target pollution of the cumulative purification treatment when the clean air volume of the air purifier is attenuated to 50% of the initial value.
In other words, it is how much air is purified when there is only half of the machine’s working capacity.

Clean energy efficiency: The amount of clean air produced by the unit purifier of the air purifier at rated state.
In other words, it is to consume the same amount of electricity, to see who is cleaner.

Applicable area: Based on the CADR value indicated by the purifier, derived from the F algorithm, it can meet the (maximum) room area applicable to the purification requirements of particulate matter.
In other words, in other words, this room is suitable for a large room.
There are also several common pitfalls.

Misunderstanding 1: The larger the air volume of the air purifier, the more effective it is.

The air output is only one of the parameters of the air purifier. It is not the effect that the larger the air volume is, the more effective the air purifier is. The performance evaluation index of the air purifier is CADR (clean air volume) = air volume × purifier purification efficiency, so the purifier The effect is also dependent on the amount of air output and the single pass removal efficiency of the contaminants.

Myth 2: The air purifier bought once and for all, no need to clean

As with the regular maintenance of air conditioners, air purifiers also require regular cleaning and maintenance. When the air purifier is used for a long time, it will absorb some substances such as dust and fluff in the air, so it should be cleaned at the air inlet, fan, etc.

Misunderstanding 3: Open the air purifier before entering the house

If the purifier is turned on when entering the house, the effect of the short-time air purifier is not good. There are many air purifiers in the market that support remote booting, preferably open in advance.

Myth 4: Too much dependence on air purifiers

In the case of the good air outside, it is possible to open the window and ventilate, or even open the air purifier. In addition, many air purifiers have a limited effect on formaldehyde, and ventilation is also essential.

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