Patent ID: 6401802
Filing Date: 2002-06-11
Classification: F24F,F28D,F28F,Y02B

Abstract:
A heat-recovery unit, comprising:a heat-recovery cell said heat-recovery cell having an upstream end face at one end of a first passage for warm air, a downstream end face at an opposite end of said first passage, an upstream end face at one end, a second, separate passage for cool inlet air, and a downstream end face at an opposite end of said second passage; and a box-like outer housing, said housing having a first inlet opening into said housing directly adjacent said upstream end face of said first passage, a first outlet opening from said housing directly adjacent said downstream end face of said first passage, a second inlet opening into said housing directly adjacent said upstream end face of said second passage, and a second outlet opening from said housing directly adjacent said downstream end face of said second passage, wherein air flow through said housing between respective inlets and outlets is substantially unidirectional, and said at least one of said first inlet opening, said second inlet opening, said first outlet opening, and said second outlet opening of said box-like outer housing including a rotatable turret coupled thereto, wherein said rotatable turret is coupled to said at least one of said first inlet opening, said second inlet opening, said first outlet opening, and said second outlet opening of said box-like outer housing so as to be freely rotatable about a longitudinal axis of said rotatable turret while remaining essentially fixed in an axial position along the longitudinal axis with respect to said box-like outer housing.