초록 ▼

The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereb

The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.

대표청구항 ▼

[What is claimed:] [1.]i) directing exhaust air to flow through one of said first and second air paths and then through the other of said first and second air paths back into said building, andii) inducing the rotary exchanger wheel to rotate at a rotational speed of from 0 to 2 rpm such that said r

[What is claimed:] [1.]i) directing exhaust air to flow through one of said first and second air paths and then through the other of said first and second air paths back into said building, andii) inducing the rotary exchanger wheel to rotate at a rotational speed of from 0 to 2 rpm such that said rotary exchanger wheel is able to be defrosted by said exhaust air.