An air purifier with controllable internal and external circulation

Abstract

The invention discloses an air purifier with controllable internal and external circulation, which includes a box body and an adjustment mechanism connected to a primary filter, the air inlet includes a return air outlet and a fresh air outlet, and the adjustment mechanism includes a fresh air damper, a return air The air door, the first linkage lever, the second linkage lever and the motor, the motor is connected to the second linkage lever, the second linkage lever is connected to the first linkage lever, the first linkage lever is connected to the return air damper, the second linkage lever is connected to the fresh air damper, the first The linkage rod perpendicularly intersects with the second linkage rod. An air purifier with controllable internal and external circulation is manufactured by adopting the above technical scheme, which can achieve the purpose of energy saving and reduce noise interference. The internal and external circulation can also work at the same time, that is, the fresh air and the return air door are half open, and part of the fresh air and return air are mixed and then filtered. This not only meets the continuous replenishment of indoor fresh air, but also quickly eliminates a small amount of PM2.5 and formaldehyde generated indoors. deal with.

Description

technical field [0001] The invention relates to the field of air purifiers, in particular to an air purifier with controllable internal and external circulation. Background technique [0002] In the past two years, as a new electrical appliance, air purifiers have gradually entered the public life, which is of great significance to protecting people's physical and mental health. Although there are many brands on the market, in general, they can be classified into three categories: the first category is the internal circulation type, which accounts for the vast majority of the market share; the second category is the fresh air type; the third category is the fresh air plus exhaust type. , There are 2 fans inside, and the full heat exchanger is used to achieve the purpose of energy saving. [0003] If analyzed from the sources of pollution in the air, these purifiers have their drawbacks. Important pollutants in indoor air can be classified into two categories: one is dust p...

AI Technical Summary

Problems solved by technology

However, harmful substances such as formaldehyde generated indoors cannot be quickly removed

The fresh air plus exhaust type air purifier, if its fresh air volume is as much as the exhaust air volume, generally has no isolation effect on outdoor dirty air. Compared with the internal circulation type air purifier, its advantage is that it can continuously provide fresh air, and its disadvantages It is unable to deal with harmful substances such as indoor formaldehyde, and the operation of two fans increases energy consumption and noise

Compared with the fresh air type air purifier, although the energy and humidity are exchanged, it does not actually achieve the purpose of energy saving, unless it is used in an environment where the indoor odor is strong and a large amount of fresh air is required to be sent in and the polluted air is removed. there is no such need

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