Replacing ventilation type haze-removing fresh air ventilator capable of switching fresh return air

Abstract

The invention discloses a replacing ventilation type haze-removing fresh air ventilator capable of switching fresh return air. The replacing ventilation type haze-removing fresh air ventilator capable of switching fresh return air comprises an internal machine and an external machine which are connected mutually; the internal machine is arranged in an air-conditioner room; a switchable air supply channel is adopted; air source can be selected autonomously according to the condition of the outdoor air; when the external air is in good condition, fresh air can serve as the air source; when the external air is in bad condition, the indoor return air is filtered to serve as the air source; a primary filter arranged in the internal machine performs primary filtration on volatile substances in the air and a PM2.5 efficient filter performs secondary filtration on the air, so that the purity of the air entering indoors is guaranteed; during layout design, an air return opening is formed in a ceiling and an air supply opening is formed in a floor, so that a replacing ventilation form from bottom to top is formed and self-circulation of vitiated air in the room is avoided.

Description

technical field [0001] The invention relates to a fresh fan, in particular to a replacement ventilation type haze-removing fresh fan with switchable fresh return air. Background technique [0002] With the continuous improvement of people's requirements for indoor air quality, fresh air fans are used more and more widely. Because the introduction of fresh air can replace indoor dirty air, reduce the content of indoor carbon dioxide and volatile organic compounds, protect human health, and improve work efficiency. But if the air is not treated, dust from the outdoor air will be introduced into the room, while increasing the load on the air conditioning unit. [0003] At present, the common fresh air will send the air into the room after filtering and heat and humidity treatment, but it has the following problems: 1. In any case, including the serious pollution of the outdoor environment, the fresh air is used as the only source of air, and This will accelerate the blockage ...

AI Technical Summary

Problems solved by technology

[0003] At present, the common fresh air will send the air into the room after filtering and heat and humidity treatment, but it has the following problems: 1. In any case, including the serious pollution of the outdoor environment, the fresh air is used as the only source of air, and This will accelerate the blockage of the filter and increase the cost of use; 2. The air supply method of ordinary fresh air fans is usually top air supply. In order to ensure sufficient fresh air in the activity area of ​​​​people, the fresh air volume must be increased, which will increase the heat and humidity of the fresh air fan. energy consumption, which also increases the cost of use

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