Fresh air device and control method thereof

Abstract

The invention provides a fresh air device and a control method thereof. The fresh air device comprises an air draft unit and a dust removal unit. The air draft unit comprises a first cover body, a first filter screen, a controller and an air draft fan electrically connected with the controller, and the first cover body is provided with an air inlet and an air outlet which communicate with the interior and the exterior correspondingly. The dust removal unit comprises a second cover body, a second filter screen and a dust removal fan electrically connected with the controller. The second cover body is provided with an air outlet and an air inlet which are respectively communicated with the indoor and outdoor. During cooling, the air draft fan is started to exhaust indoor air to the outside from the first cover body, so that outdoor cold air is sucked into the indoor space through the second cover body. During dust removal, the dust removal fan is started and blows air to the second filter screen so as to remove dust on the surface of the second filter screen. According to the fresh air device, automatic dust removal can be achieved without additionally arranging a dust removal brush,the dust removal effect is good, the maintenance time and the service life of the fresh air device can be prolonged, and the energy-saving and cooling effects are good.

Description

technical field [0001] The invention relates to the technical field of fresh air cooling, in particular to a fresh air device and a control method thereof. Background technique [0002] In order to reduce cooling energy consumption and meet cooling needs, people gradually apply fresh air systems to cabinets and equipment rooms of base stations. The existing fresh air system consists of three components: a controller, an air intake unit (including an intake fan, a filter screen and an automatic dust removal device) and an exhaust unit (including an exhaust fan). The controller controls the intake fan to deliver low-temperature fresh air to the room. Then control the exhaust fan to discharge high-temperature air to the outside to form a fresh air flow field indoors, thereby achieving the purpose of cooling. The existing fresh air system has the advantages of energy saving and high utilization efficiency. [0003] However, the existing fresh air device has a large volume, whic...

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Problems solved by technology

[0003] However, the existing fresh air device has a large volume, which is not conducive to installation

Moreover, as the application number: CN201120349171.7 discloses a fresh air system dust removal device, the automatic dust removal device of the existing fresh air system includes a bracket, a motor and a dust removal brush, etc., and its structure is complex, and when cooling, it is necessary to start the air intake fan to fill the room. For fresh air, when removing dust, start the intake fan to rotate in reverse to blow towards the filter, and at the same time start the dust removal brush to clean the filter. When the dust removal brush is started to clean the filter, the dust is easily suspended and scattered in the surrounding space. At this time, if the turning direction of the intake fan is restored to refill the room with fresh air, the scattered dust will be brought into the room, which will be harmful Indoor cleanliness will easily lead to clogging of the filter screen, resulting in poor cooling effect, and it will also increase its maintenance frequency, shorten its service life, and is not conducive to energy saving

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