Dual-mode fresh air purification machine and indoor air purification circulation system

Abstract

The invention provides a dual-mode fresh air purification machine and an indoor air purification circulation system. A fresh air filtering portion communicates with a return air filtering portion through a mode switching cavity. An opening or a through hole is formed in a shell in the back face of the mode switching cavity. The opening or the through hole is used as an indoor air return opening used during air return. The opening or the through hole is used as a fresh air supply opening used during fresh air output. By the adoption of the structure, the two operating modes can be obtained; the first operating mode is the air purification large-circulation mode, wherein two fans run at the normal rotating speed, and the opening or the through hole is used as the air return opening; the second mode is the pure fresh air purification mode, wherein the second fan is in the low-rotating-speed operating mode, the opening or the through hole is used as the fresh air supply opening for conveying fresh air to other rooms. By the adoption of the dual-mode fresh air purification machine and the indoor air purification circulation system, the dual-mode switching is achieved by additionally arranging the mode switching cavity, specific different working modes are matched out by controlling and changing the output air volume of the two fans, and the problems that at present, the livelihood of people is seriously troubled by the fog and haze weather, and the content of indoor carbon dioxide is excessive in the daily life are solved.

Description

technical field [0001] The invention belongs to the field of air purification, and in particular relates to a fresh air purifier for dealing with haze weather. Background technique [0002] In recent years, there have been large-scale continuous smog days in China. At the same time, the smog index in various places has frequently exceeded the table. Students and kindergartens have to suspend classes and holidays. The respiratory health of most residents is seriously threatened. [0003] Haze weather is a state of air pollution. Haze is a general expression of the excessive content of various suspended particulate matter in the atmosphere, especially PM2.5 (particulate matter with an aerodynamic equivalent diameter less than or equal to 2.5 microns) is considered to cause haze The "culprit" of the weather. Along with the deterioration of air quality, increasing appears in the phenomenon of cloudy weather, and harm increases the weight of. In many areas of China, the haze we...

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Problems solved by technology

[0007] 1. Using electrostatic electronic dust removal type, ozone type, negative oxygen ion type, photocatalytic technology, etc., the purification effect is limited, and the resulting electrostatic adsorption and dust accumulation will damage the indoor air and bring radiation and other hazards

[0008] 2. Using filter technology, the filter-type air purifiers currently on the market are placed in the room, because the circulation system is small, so it cannot effectively purify the indoor air; especially some air purification products in developed countries , because the ambient air quality is generally high, there is no need to develop air purifiers for haze weather, and its filtration and purification effects are far from meeting the requirements of PM2.5 filtration level

[0009] 3. In addition, in China, due to the serious outdoor air pollution, the filter element needs to be replaced frequently, which is inconvenient and expensive to use, which is not conducive to the year-round use of ordinary households

[0010] 4. All kinds of indoor air purifiers have local circulating air, which cannot improve the indoor air environment as a whole, and have no real beneficial purification effect

[0011] 5. More importantly, all kinds of indoor air purifiers do n

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