Body support system with combination of pressure redistribution and internal air flow guide(s) for withdrawing heat and moisture away from body reclining on support surface of body support system

摘要

Body support systems include central cores having one or more internal air flow guides that form part of each system for pressure redistribution, and withdrawal of heat and moisture away from an uppermost comfort layer or body-supporting layer(s). During operation of the system, heat and/or moisture is directed from the uppermost comfort layer or body-supporting layer(s) into the central core portion of the body support system and out of the body support system. The internal air flow guide(s) are formed of cellular polymer material and are coupled to the uppermost comfort layer to form an air flow path.

主权项

1. A body support system, comprising:
at least one uppermost comfort layer, having a support surface, disposed above a central core of the body support system, the uppermost comfort layer comprising a temperature and pressure sensitive cellular polymer material; a foundation support layer comprising a cellular polymer material, the foundation support layer having a bottom surface forming a bottommost outwardly facing surface of the body support system, the central core between the uppermost comfort layer and the foundation support layer; an air flow guide comprising a low air loss material that is disposed within the central core of the body support system, the air flow guide comprising an upper body portion, a central body portion adjacent the upper body portion, and a lower body portion in an overlapped relationship with the central body portion, wherein each of the upper body portion, the central body portion, and the lower body portion comprises open cell polyurethane foam, the air flow guide forming an air flow path within the central core of the body support system for air and/or moisture vapor transport transportable; a support layer comprising a cellular polymer material disposed within the central core between the air flow guide and the foundation support layer of the body support system; at least one electrically driven air flow unit, disposed within a cavity in the body support system, coupled and adjacent to the lower body portion, wherein during operation, the at least one electrically driven air flow unit draws air and moisture vapor away from the at least one uppermost comfort layer through the upper body portion, the central body portion, and the lower body portion such that air along the air flow path is exhausted out of the at least one electrically driven air flow unit to evacuate air and evaporate moisture vapor from the body support system.