Air Pumping Device

摘要

An air pumping device for the buoyancy control of a lighter than air craft is presented. The pumping device integrates within a single housing a centrifugal compressor and an axial gap, ironless core, electric motor. All of the rotating components of the compressor and motor are mounted on a single common shaft. The air pumping device includes a valve arrangement which allows for both forward and reverse airflow though the compressor portion of the device. The motor portion of the device features a stator coil and power, communications and sensor electronics, all integrated on a single common printed circuit board. The air pumping device exhibits exceptionally high operating efficiency and power density, which are highly desirable for lighter than air craft applications.

主权项

1. An air pumping device, comprising:
a compressor, including an impeller and a compression chamber; a motor, including two rotors and a stator; wherein the impeller and the rotors are mounted on a common rotatable shaft; and wherein the stator is disposed between the rotors, such that each rotor is equidistant from the stator to define an air gap between each rotor and the stator.