Patent ID: 9605905
Date: 2017-03-28
CPC Classifications: F24F,F28D,F28F,Y02B

Claim:
1. An air-to-air heat exchanger having a core made of elongated parallel plastic panels composed of individual tubes secured together side-by-side with one another, and spacers secured at intervals spaced from one another along the lengths of said panels and secured to adjacent ones of said panels to space said panels apart to form spaces between said panels and secure said panels together to form a unitary core structure, a housing having walls secured to and enclosing said core, said housing having a first inlet opening at one end of said core and a first outlet opening at the opposite end of said core, each of said first inlet and outlet openings communicating with said tubes in said panels, said housing having a second inlet opening at said opposite end of said core and a second outlet opening for communicating with said spaces between said panels, and a structure for substantially blocking the flow of air between said tubes and said spaces.