Total heat exchanger

Abstract

The invention discloses a total heat exchanger, relates to the technical field of ventilation systems, and aims to guarantee the indoor air quality and the normal use of the total heat exchanger. The total heat exchanger comprises a box body, an air door component, a heat exchange core body and at least two dust removing and filtration devices, wherein a first heat exchange air flue, a second heat exchange air flue and an internal circulation air flue are arranged inside the box body; the air door component comprises air doors and an air door switching mechanism; the air door switching mechanism can control the air doors to switch between a first working state and a second working state; when the air doors are in the first working state, the air doors can close the internal circulation air flue and open the first heat exchange air flue and the second heat exchange air flue; when the air doors are in the second working state, the air doors can open the internal circulation air flue and close the first heat exchange air flue and the second heat exchange air flue; one dust removing and filtration device is arranged at a fresh air inlet, and the other dust removing and filtration device is arranged at an indoor return air inlet. The total heat exchanger is applied to an indoor air renewal system.

Description

technical field [0001] The invention relates to the technical field of ventilation systems, in particular to a total heat exchanger. Background technique [0002] With the development of urbanization and the continuous improvement of people's living standards, modern urbanites are paying more and more attention to the requirements of the living environment. At present, interior design generally uses full heat exchangers to purify indoor air. However, with the rapid development of modern industry, air pollution is becoming more and more serious, and there are more and more haze days, such as harmful substances in the air (such as PM2.5) seriously exceeding the standard, when outdoor air pollution is serious, a large amount of dust, etc Harmful substances can easily block the dust removal filter device of the total heat exchanger, so the dust removal filter device needs to be cleaned or replaced frequently, and the service life of the dust removal filter device is greatly shor...

AI Technical Summary

Problems solved by technology

[0005] However, the above method has the following problems: although the internal circulation system of the total heat exchanger can allow indoor air to be reintroduced into the room after passing through the dust removal filter device, when the indoor and outdoor air exchange channels are opened, the outdoor air does not pass through the dust removal filter device and enters the heat exchanger first. The exchange core is easy to block the heat exchange core, which greatly reduces the service life of the heat exchange core and seriously affects the normal use of the total heat exchanger

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