Internal and external circulation air purifier and method

Abstract

The invention discloses an internal and external circulation air purifier and a method. The air purifier comprises a machine body, an exhaust pipe assembly, a first filtering piece, a main draught fan and a first draught fan. The machine body is provided with a first indoor air inlet, a second indoor air inlet and an outdoor opening. The exhaust pipe assembly is communicated with the outdoor opening and the outdoor part. The first filtering piece is arranged in the machine body and communicated with the first indoor air inlet. The main draught fan is arranged at the downstream part of the first filtering piece. The first draught fan is arranged in the machine body and communicated with the second indoor air inlet and introduces indoor air to exhaust the air outdoors through the exhaust pipe assembly. The indoor air can be fresh, the concentration of indoor CO2 is reduced, and the comfort level of a user is increased. Meanwhile, by means of the exhaust pipe assembly, only a round pipe commonly seen on the market needs to be used, the user only needs to form a hole in a wall face, and the attractiveness of the wall face is kept. Large mold expenditure is not needed for a manufacturer. Meanwhile, air inlet and air outlet can be achieved, the indoor airflow circulation can be independently achieved, and simultaneous circulation of indoor airflow and outdoor airflow can be achieved.

Description

technical field [0001] The invention relates to an air purifier with internal and external circulation. Background technique [0002] Air purifiers, also known as "air cleaners", air fresheners, etc., refer to the ability to absorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde and other decoration pollution, bacteria , allergens, etc.), which can effectively improve the air cleanliness. However, the existing air purifiers require the indoor doors and windows to be closed tightly to achieve a good air purification effect, but closing the doors and windows for a long time will lead to indoor CO 2 Concentration increases, causing users to feel uncomfortable. Therefore, it is necessary to provide an air purifier capable of internal and external circulation, and in order to achieve internal and external circulation, it is necessary to connect an exhaust pipe to the outside to introduce fresh air. However, the current e...

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Problems solved by technology

[0002] Air purifiers, also known as "air cleaners", air fresheners, etc., refer to the ability to absorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde and other decoration pollution, bacteria , allergens, etc.), which can effectively improve the air cleanliness. However, the existing air purifiers require the indoor doors and windows to be closed tightly to achieve a good air purification effect, but closing the doors and windows for a long time will lead to indoor CO 2 Concentration increases, causing users to feel uncomfortable. Therefore, it is necessary to provide an air purifier capable of internal and external circulation, and in order to achieve internal and external circulation, it is necessary to connect an exhaust pipe to the outside to introduce fresh air. However, the current exhaust pipe can only Wind, or wind, if you want to use two at the same time, you need to drill 2 holes on the wall to achieve it, which will cause troublesome installation and affect the appearance of the wall, or only one hole on the wall to achieve, However, the exhaust pipe adopts a structure separated from the left and right. This structure generally requires a special mold to be produced by injection molding, and the manufacturing cost is relatively high.

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