Patent ID: 8382563
Filing Date: 2013-02-26
Classification: B60H

Abstract:
1. A control module for a heating, ventilating, and air conditioning system comprising: a housing forming an air flow conduit therein, the housing having an inlet providing fluid communication between a supply of air and the air flow conduit and a center wall forming a first flow path and a second flow path in the air flow conduit; an evaporator disposed in the housing assembly downstream of the inlet; a heater core disposed in the housing assembly downstream of the evaporator; at least one divider disposed in the housing assembly to partition the air flow conduit into a first sub-passage and a second sub-passage; at least one blend door disposed in the air flow conduit, the at least one blend door selectively positionable between a first position and a second position, wherein the at least one blend door permits a flow of air through the first flow path and militates against the flow of air through the second flow path when positioned in the first position, and permits the flow of air through the second flow path and militates against the flow of air through the first flow path when positioned in the second position, the at least one blend door permitting the flow of air through the first flow path and the second flow path when positioned intermediate the first position and the second position, wherein a third flow path is formed between the at least one blend door and the center wall when the at least one blend door is positioned intermediate the first position and the second position to provide fluid communication between the first flow path and the second flow path downstream of the heater core and upstream of the at least one blend door; a first mode door disposed in the first sub-passage, the first mode door selectively positionable between a first position and a second position, wherein the first mode door permits a flow of conditioned air through a first outlet of the first sub-passage and militates against the flow of conditioned air through a second outlet of the first sub-passage when positioned in the first position, and permits the flow of conditioned air through the second outlet of the first sub-passage and militates against the flow of conditioned air through the first outlet of the first sub-passage when positioned in the second position, and the first mode door permitting the flow of conditioned air through the first outlet of the first sub-passage and the second outlet of the first sub-passage when positioned intermediate the first position and the second position, wherein only the first mode door directs the flow of conditioned air into the first outlet of the first sub-passage and the second outlet of the first sub-passage, and wherein the first mode door is spaced from a wall of the housing forming a gap between a cross-member of the first mode door and the wall when positioned intermediate the first position and the second position; a second mode door disposed in the second sub-passage, the second mode door selectively positionable between a first position and a second position, wherein the second mode door permits a flow of conditioned air through a first outlet of the second sub-passage and militates against the flow of conditioned air through a second outlet of the second sub-passage when positioned in the first position, and permits the flow of conditioned air through the second outlet of the second sub-passage and militates against the flow of conditioned air through the first outlet of the second sub-passage when positioned in the second position, and the second mode door permitting the flow of conditioned air through the first outlet of the second sub-passage and the second outlet of the second sub-passage when positioned intermediate the first position and the second position, wherein only the second mode door directs the flow of conditioned air into the first outlet of the second sub-passage and the second outlet of the second sub-passage, and wherein the second mode door is spaced from a wall of the housing forming a gap between a cross-member of the second mode door and the wall when positioned intermediate the first position and the second position; and a plurality of volume doors, one of the volume doors disposed in at least one of the first outlet and the second outlet of the first sub-passage and another of the volume doors disposed in at least one of the first outlet and the second outlet of the second sub-passage, each of the volume doors selectively positionable between a first position and a second position, wherein each of the volume doors permits the flow of a volume of conditioned air through the at least one of the first outlet and the second outlet of at least one of the first sub-passage and the second sub-passage in the first position and militates against the flow of a volume of conditioned air through the at least one of the first outlet and the second outlet of at least one of the first sub-passage and the second sub-passage when positioned in the second position, and each of the volume doors when positioned intermediate the first position and the second position permitting the flow of a volume of conditioned air less than the volume of conditioned air permitted to flow through the at least one of the first outlet and the second outlet of at least one of the first sub-passage and the second sub-passage when positioned in the first position.