Full heat exchange type fresh air machine

Abstract

The invention discloses a full heat exchange type fresh air machine which comprises a fresh air inlet chamber, an exhausted air inlet chamber, a fresh air supply chamber and an exhausted air supply chamber. The full heat exchange type fresh air machine is further provided with a fresh air bypass port and an exhausted air bypass port, wherein the fresh air inlet chamber and the fresh air supply chamber are communicated through the fresh air bypass port to form a fresh air bypass air circuit, and the exhausted air inlet chamber and the exhausted air supply chamber are communicated through the exhausted bypass port to form an exhausted air bypass air circuit. By means of the full heat exchange type fresh air machine, under the conditions that the size of a machine body is not increased, the purpose of bypassing the fresh air and the exhausted air through different air circuits is achieved.

Description

technical field [0001] The invention relates to household appliances, in particular to a total heat exchange type fresh air blower. Background technique [0002] The main working principle of the full heat exchange fresh air fan includes: indoor air enters the machine through the indoor exhaust air inlet, and is discharged outside by the exhaust air blower after passing through the total heat exchange core; outdoor air enters the machine through the outdoor fresh air inlet, passes through After the total heat exchange core is sent into the room by the fresh air blower, the two airflows meet at the total heat exchange core to complete the exchange of temperature and humidity. This cycle achieves the purpose of replacing indoor air and reducing energy consumption. [0003] When the full heat exchange type fresh air fan is used in spring and autumn, the difference between the indoor temperature and the outdoor temperature is small at this time, and it is often not necessary to...

AI Technical Summary

Problems solved by technology

This bypass scheme in the prior art causes a difference in resistance between the fresh air side and the exhaust air side. When the bypass is used, the exhaust air volume is greater than the fresh air intake air volume, resulting in negative pressure in the room, so that the outdoor unfiltered air can directly enter the room ( For example, through gaps in doors and windows, etc.); meanwhile, the fresh air fans in the prior art also have the following disadvantages: the bypass structure is relatively large, the heat exchange core passes through the wind on one side, and there is a pressure difference on both sides for a long time, which increases the heat dissipation. Exchange core loss, low bypass efficiency, increase unit energy consumption, reduce heat exchange efficiency

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