| 20100193165 | HIGHLY EFFICIENT ENVIRONMENT-FRIENDLY AIR TYPE HEAT EXCHANGER - Disclosed herein is an eco-friendly high-efficiency heat exchanger for exchanging indoor air with outdoor air. The heat exchanger includes a housing which defines a main body of the heat exchanger and has on both sides thereof an indoor air inlet for introducing the indoor air into the housing and an indoor air outlet for discharging the indoor air from the housing. A first plate is inserted into the housing, and has a thin sheet and a protrusion which is provided along an edge of the thin sheet in such a way as to protrude out and is open at predetermined positions on the protrusion to provide an entrance and an exit. A second plate is placed on the upper or lower portion of the first plate, and has a thin sheet and a plurality of protrusions which protrude along the length of the thin sheet in parallel. Here, a plurality of first and second plates is alternately layered. | 08-05-2010 |
