Fresh air filtering device for doors and windows

Abstract

The invention provides a fresh air filtering device for doors and windows in the technical field of air purification. The fresh air filtering device comprises a shell; the multiple driving assemblies are fixedly arranged on one side of the inner cavity of the shell; the switching assembly is fixedly arranged in the inner cavity of the shell and located on the other side of the inner cavity of the shell; the top plate is fixedly buckled at the top end of the shell; the air inlet and the air outlets are formed in the outer wall of the shell, a plurality of first through holes are formed in the air inlet, the number of the air outlets is multiple, and the air outlets correspond to the driving assembly in position; and the filtering assembly is arranged in the inner cavity of the shell and corresponds to the air inlet in position. According to the fresh air filtering device of the door and window, the quality of fresh air is guaranteed, meanwhile, impurities in the external environment are prevented from entering the device, and multiple flow speed gears are provided for a user to adjust.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a fresh air filter device for doors and windows. Background technique [0002] The fresh air system is an independent air treatment system composed of a supply air system and an exhaust air system. It is divided into two types: a ducted fresh air system and a ductless fresh air system. The ducted fresh air system consists of a fresh air fan and duct accessories. The purifying outdoor air is introduced into the room, and the indoor air is discharged through pipes; the ductless fresh air system is composed of fresh air fans, and the fresh air fans are also used to purify the outdoor air into the room. Relatively speaking, the ducted fresh air system is more suitable for industrial or large-area offices due to the large amount of engineering. District use, while the ductless fresh air system is more suitable for home use because of its convenient installation; [0003] Now...

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Problems solved by technology

[0003] Nowadays, with the continuous improvement of people's living standards, the requirements for the indoor air environment are also gradually increasing, but the way of ventilation by opening and closing doors and windows has fast wind speed, rapid room temperature changes, and does not have the function of fresh air filtration. In addition, the existing After long-term use of some door and window fresh air devices, due to the dust in the external environment, the filter screen is clogged, it is difficult to clean, and the filtering effect is average. In the state of indoor and outdoor air pressure balance, the fresh air ventilation effect is poor, which improves the air quality. The effect needs to be improved

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