Novel fan

Abstract

The invention provides a novel fan. The fan comprises an air filtering cavity and a box cover, wherein an air inlet end, an air filtering device, an air feeder, an air outlet filter layer and an air outlet end are sequentially arranged in the air filtering cavity along the direction from air inlet to air outlet; the air outlet filter layer is formed by joining a plurality of filter cores together; flow benefiting pillars with circular arc-shaped cross sections are respectively arranged at joints of adjacent filter cores; the circular arc center angles are the angles between the adjacent filter cores; a bypass valve with a sensor and an outdoor air outlet are arranged at the air inlet end; the air feeder is a direct-current variable-frequency fan; and a PTC (Positive Temperature Coefficient) heater is arranged above the air feeder. The novel fan provided by the invention has the advantages that 99.9% of armful gases containing formaldehyde, bacterial virion and the like in the air can be filtered; 99.9% of undesirable odors and dust haze are removed; the operation is stable and no electric spark burst sound or ozone is produced; the service life of the novel fan is two times that of fans in prior art; and the indoor air can be rapidly purified in a short time and the practicability is strong.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a fresh fan. Background technique [0002] Haze weather has become a very active keyword in the media in recent months. my country is a country with serious PM2.5 pollution. The overall situation is high PM2.5 pollution, especially in North China. Moreover, with the continuous development of the economy and the rapid increase of urban car ownership, the proportion of small particulate matter in the urban atmosphere continues to increase. More attention should be paid to the harm of PM2.5 to human health. However, the vast majority of people spend 70% to 90% of their time indoors. The survey of the CCTV international website also shows that nearly 1 / 5 of people stay in a centralized air-conditioned environment for more than 8 hours a day. Therefore, the U.S. Centers for Disease Control and Prevention believes that indoor air pollution is even several times more harmful t...

AI Technical Summary

Problems solved by technology

[0003] Therefore, it is very necessary to design a safe and reliable indoor fresh air machine with good filtering effect. The existing fresh air machine is equipped with an air filter device and a total heat exchange device to realize heat exchange while purifying the air, but such devices often Large volume, troublesome installation, complex internal structure, long air purification time, high noise, inconsistent air volume, unsatisfactory air purification effect, affecting the comfort of use

Especially when used indoors such as classrooms, it is easy to cause waste of electricity

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