| 摘要 |
PURPOSE:To prevent the mixing of primary air stream and secondary air stream by a method wherein a square pillar is constituted of the combination of the housing frames of triangular pillars made by splitting the square pillar into two parts along a diagonal line in the laminating direction of a heat exchanging element. CONSTITUTION:One set of housing 2 is constituted by a method wherein a filling agent is coated previously on respective sides including the rib 5 of the housing frame 2A of a triangular pillar, made by splitting a square pillar along a diagonal line in the laminating direction of a heat exchanging element 1, while a retaining piece 3a and a retaining hole 4a in a triangular end face 2a are engaged with the retaining hole 4b and the retaining piece 3b mutually. Two pieces of the housing frames 2A of the same member are prepared in such manner and both of them are engaged to hold respective sides of the heat exchanging element 1 whereby the mixing of the primary and secondary air streams may be prevented, respective housing frames may be made by one kind of molding mold and a labor to manage the parts may be reduced. |
