| US 7,530,889 B2 | ||
| Common HVAC doors | ||
| Steven B. Marshall, Oxford, Mich. (US); Earl H. Buckman, Warren, Mich. (US); Kevin B. Horne, Orion, Mich. (US); David S. Newman, Lake Orion, Mich. (US); and Robert W. Oliver, Howell, Mich. (US) | ||
| Assigned to Valeo Climate Control Corp., Auburn Hills, Mich. (US) | ||
| Filed on Sep. 30, 2005, as Appl. No. 11/239,994. | ||
| Prior Publication US 2007/0077879 A1, Apr. 05, 2007 | ||
| Int. Cl. F24F 7/00 (2006.01) | ||
| U.S. Cl. 454—121 [454/139] | 12 Claims |
| 1. An HVAC system, comprising:
a. an HVAC unit;
b. at least one air inlet and one air outlet duct to the HVAC unit; and
c. at least two air diversion, direction, distribution or air mixing doors, each door including an outer sealing surface and
opposed ends, the opposed ends each of which are tapered or canted and each having an axis boss disposed thereon wherein the
outer sealing surface of a first door can pass within the two axis bosses of a second door;
wherein the at least two doors are barrel doors, each barrel door including a barrel part and two opposite ends, the opposite
ends being shaped like circular segments, each door rotatable about a rotational axis parallel to and spaced apart from the
rotational axis of the other door;
and wherein the at least two barrel doors are nested so that the barrel part of a first barrel door is placed substantially
completely within a space defined by the barrel part, two opposite ends and axis of rotation of a second barrel door such
that the barrel part of the first barrel door selectively swings or passes on the first barrel door's axis of rotation out
of, into and through the space defined by the barrel part, two opposite ends and axis of rotation of the second barrel door.
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