Fresh air machine with multiple working modes

Abstract

The fresh air ventilator comprises a machine shell, a fresh air filtering inlet, an outdoor air inlet and outlet and an indoor air inlet and outlet are formed in the machine shell, the fresh air filtering inlet and the outdoor air inlet and outlet face outdoors, the indoor air inlet and outlet face indoors, and a filtering assembly is arranged at the fresh air filtering inlet; an air blowing mechanism is rotationally connected into the machine shell and is provided with a fresh air leading-in position and a fresh air direct blowing position, the fresh air leading-in position is used for blocking the outdoor air inlet and outlet and leading fresh air from the fresh air filtering inlet to the indoor air inlet and outlet, and the fresh air direct blowing position is used for leading the fresh air from the outdoor air inlet and outlet to the indoor air inlet and outlet; and the waste air exhaust position is used for guiding waste air from the indoor air inlet / outlet to the outdoor air inlet / outlet. According to the fresh air ventilator, only one blowing mechanism is arranged, even if the fresh air ventilator has different functions, the different functions can be switched by changing the circumferential position and the blowing direction of the blowing mechanism in the machine shell, the power cost is saved, the operation energy consumption is reduced, and the size of the fresh air ventilator is reduced.

Description

technical field [0001] The invention belongs to the technical field of indoor air purification, and in particular relates to a multi-working mode fresh fan. Background technique [0002] Fresh air fans are the most commonly used air purification equipment, which can introduce and filter outdoor air into the room. The traditional fresh air fans are all one-way positive pressure type, that is, the fresh air fan can only send fresh air into the room, and dynamically maintain the indoor air pressure relative to the outdoor slight positive pressure, and the indoor air escapes through the gaps of doors and windows, and the function is relatively simple. [0003] Therefore, a type of two-way fresh air fan has gradually appeared on the market. This type of fresh air fan can not only introduce outdoor fresh air into the room, but also discharge the indoor dirty air to the outside. For example, the Chinese invention patent application with publication number CN114001426A discloses a ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the existing fresh air fans are: (1) In addition to the fresh air passage and the fresh air fan, an additional independent exhaust air passage and exhaust fan are required to realize the function of exhausting indoor exhaust air to the outside. The simultaneous existence of the exhaust air channel and the fresh air channel not only doubles the size of the whole machine, but also increases the energy consumption of the fresh air fan; (2) When the fresh air fan and the exhaust fan work at the same time, in order to prevent the fresh air entering the room from It is sucked into the exhaust air inlet, it is necessary to set the distance between the fresh air outlet and the exhaust air inlet as far as possible, and even install pipes at the fresh air outlet or exhaust air inlet to extend the fresh air outlet and exhaust air inlet. Setting them in different spatial positions further increases the volume of the casing and even takes up indoor space; making the fresh air fan and exhaust fan not work at the same time can avoid the problem that the fresh air is discharged in a short time, but the fresh air The volume is still increased; (3) it can only be used to send the filtered fresh air into the room, but the filtered fresh air needs to pass through the filter, resulting in less air volume; in some special cases, it is not possible to directly send a large amount of air into the room Fresh air for faster air circulation

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