Double-draught-fan type fresh air purifying machine

Abstract

The invention provides a double-draught-fan type fresh air purifying machine which integrates the fresh air function and the air return function. Air return openings can be distributed in different rooms. At least two draught fans are adopted to each conduct circulation of supplemented fresh air and returned air. Arc-shaped passageways are adopted for a fresh air outlet cavity and a returned air outlet cavity respectively. The requirements for the size and power of each draught fan are remarkably lowered. The fresh air function and the air return function are separated, a fresh air filter element and a returned air filter element are independently designed, and therefore the pertinence of the filter elements is high, the thickness of the filter elements is reduced, the replacement frequency is lowered, and the whole-machine cost is reduced. Cylindrical or platy filter modules with HEPA efficient filter modules are adopted as filter modules which have the powerful wind power regulation function. The ratio of fresh air to indoor circulating air can be freely regulated according to the changes of the outdoor air quality on the basis of the rotating speed of the draught fans instead of regulating an air valve. An intelligent domestic environment regulation controller is arrange and combined with the internet of things technology and the mobile internet technology, and therefore the purification function can be remotely controlled and regulated, and the requirement for environment-friendly residence can be better met.

Description

technical field [0001] The invention belongs to the field of air purification and its control, and in particular relates to a fresh air purifier for purifying PM2.5. Background technique [0002] PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 microns in the atmosphere, also known as particulate matter that can enter the lungs. Its diameter is less than 1 / 20 of the thickness of a human hair. In Western countries, more than 90% of air purification devices are aimed at allergy sufferers, that is, people who experience severe discomfort from pollen, pet hair, smoke, mold and dust. The Chinese need more to filter waste particles in the air. Many waste particles, especially PM2.5, are much smaller in diameter than pollen, dust and other particles. Therefore, purification devices that work well in Western countries may not be applicable in China. PM2.5 generation sources are divided into: natural sources, including soil dust, plant pollen, spores, ba...

AI Technical Summary

Problems solved by technology

The disadvantage of activated carbon is that it can only temporarily absorb certain pollutants. When the temperature and wind speed rise to a certain level, the adsorbed pollutants may be released and enter the breathing space again to cause secondary pollution.

[0017] However, due to technical limitations, the existing air purification equipment has high filter element replacement frequency, high fan power, high cost, and the possibility of other new pollution such as electrostatic radiation and light radiation, especially for air purification equipment with fresh air functions. , due to the high degree of pollution of outdoor fresh air, the filter element needs to be replaced frequently. In order to meet the clean filtering function, the filter element is designed to be thick, resulting in large wind resistance, and needs to meet the demand for large air volume circulation, so it has a large fan power, high noise, and high cost. High cost of filter material, high maintenance cost, inconvenient adjustment of air volume, etc.

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