Abstract:
Pliable-wall air ducts with internal expanding structures are disclosed. An example air duct system includes a shaft to be disposed within an air duct, to extend in a longitudinal direction, and to be in longitudinal compression. The air duct system also includes a plurality of ribs to be coupled to the shaft and to engage an inner surface of the air duct and a spring to be disposed within the air duct, the spring to be coupled to the shaft. The spring under stress being a contributing factor in both the shaft being in longitudinal compression and the air duct being in longitudinal tension. A method of retrofitting an existing air duct system with internal expanding structure is also disclosed.
Abstract:
In some example pliable air duct systems, inflatable ducts of various diameters and lengths are created by selectively assembling pre-existing stock pieces in different combinations. In some examples, the stock pieces include disconnectable longitudinal joints and disconnectable circumferential joints, wherein the longitudinal joints enable interconnecting multiple stock pieces to achieve a desired tube diameter, and the circumferential joints allow connecting multiple tube segments end-to-end to produce an air duct assembly of a desired length. To control the volume and/or the direction of air discharged from the duct, the duct assembly, in some examples, includes an adjustable register comprising a movable pliable sheet that overlies a discharge opening in a pliable sidewall of the duct. In some examples, the inflatable duct includes one or more cutout patterns on the duct's sidewall to provide guidance in creating a sidewall discharge opening of a proper size and location.
Abstract:
Example methods, apparatus, and articles of manufacture to determine pliable air duct configurations are disclosed. A disclosed example method involves determining a first quantity of adjustable air outlet duct sections to configure an air delivery duct system when an operating mode identifier is received. The operating mode identifier is associated with an amount of air delivered by the air delivery duct system into targeted areas. The first quantity of adjustable air outlet duct sections is based on an airflow rate value and the operating mode identifier. The airflow rate value is indicative of airflow through an air delivery duct system. Each adjustable air outlet duct section includes at least one adjustable air outlet having at least one size- adjustable orifice.
Abstract:
Pliable-wall air ducts with suspended frames are disclosed herein. An example air duct system includes an air duct having a pliable sidewall. The pliable sidewall has a total weight. The example air duct system includes a framework to be disposed within the air duct. The framework includes a shaft to extend in the longitudinal direction, a rib to engage an inner surface of the air duct and a plurality of spokes to connect the rib to the shaft. The example air duct system a plurality of hangers. Each hanger comprises an elongate member having an upper section and a lower section. The lower section is to be coupled to the framework via access through a corresponding opening defined by the pliable sidewall. Most of the total weight of the pliable sidewall is to be carried by the framework.
Abstract:
A door for a cold storage locker or other applications includes an inflatable or fluid-filled seal system. The seal system comprises a network of pliable tubular seals that expand as air or another fluid is forced air through the seals. Expansion of the seals provides a more positive seal. To inhibit frost from accumulating near the seals, the seals are kept relatively warm by continuously circulating fluid through the seals regardless of whether the door is open or closed. In some cases, the fluid within the seals is heated.
Abstract:
Pliable-wall air ducts with suspended frames are disclosed herein. An example air duct system includes an air duct having a pliable sidewall. The pliable sidewall has a total weight. The example air duct system includes a framework to be disposed within the air duct. The framework includes a shaft to extend in the longitudinal direction, a rib to engage an inner surface of the air duct and a plurality of spokes to connect the rib to the shaft. The example air duct system a plurality of hangers. Each hanger comprises an elongate member having an upper section and a lower section. The lower section is to be coupled to the framework via access through a corresponding opening defined by the pliable sidewall. Most of the total weight of the pliable sidewall is to be carried by the framework.
Abstract:
Example air duct systems for supplying conditioned air to comfort zones include various example inflatable tubes with various example dampers. The dampers move noticeably slowly and/or its opening is delayed to reduce the rate at which the tube is inflated by a supply air blower. Depending on the particular example, the damper can be either at the inlet end of the tube or at the tube's opposite end. In some examples, the damper is controlled by an actuator that is powered by air or driven by an electric motor.
Abstract:
In some example pliable air duct systems, inflatable ducts of various diameters and lengths are created by selectively assembling pre-existing stock pieces in different combinations. In some examples, the stock pieces include disconnectable longitudinal joints and disconnectable circumferential joints, wherein the longitudinal joints enable interconnecting multiple stock pieces to achieve a desired tube diameter, and the circumferential joints allow connecting multiple tube segments end-to-end to produce an air duct assembly of a desired length. To control the volume and/or the direction of air discharged from the duct, the duct assembly, in some examples, includes an adjustable register comprising a movable pliable sheet that overlies a discharge opening in a pliable sidewall of the duct. In some examples, the inflatable duct includes one or more cutout patterns on the duct's sidewall to provide guidance in creating a sidewall discharge opening of a proper size and location.
Abstract:
In some example pliable air duct systems, inflatable ducts of various diameters and lengths are created by selectively assembling pre-existing stock pieces in different combinations. In some examples, the stock pieces include disconnectable longitudinal joints and disconnectable circumferential joints, wherein the longitudinal joints enable interconnecting multiple stock pieces to achieve a desired tube diameter, and the circumferential joints allow connecting multiple tube segments end-to-end to produce an air duct assembly of a desired length. To control the volume and/or the direction of air discharged from the duct, the duct assembly, in some examples, includes an adjustable register comprising a movable pliable sheet that overlies a discharge opening in a pliable sidewall of the duct. In some examples, the inflatable duct includes one or more cutout patterns on the duct's sidewall to provide guidance in creating a sidewall discharge opening of a proper size and location.