|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||096/130; 128/204.16; 128/204.21; 128/205.24|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 22 인용 특허 : 140|
A portable gas fractionalization apparatus that provides oxygen rich air to patients is provided. The apparatus is compact, lightweight, and low-noise. The components are assembled in a housing that is divided into two compartments. One compartment is maintained at a lower temperature than the other compartment. The lower temperature compartment is configured for mounting components that can be damaged by heat. The higher temperature compartment is configured for mounting heat generating components. An air stream is directed to flow from an ambient air i...
What is claimed is: 1. An oxygen concentrator comprising: a controller; at least one current actuated compressor; and a Pulse Width Modulated (PWM) current source connected to the compressor, wherein the controller actuates the compressor by providing a PWM signal to the current source which converts the PWM signal to a compressor actuation current. 2. The concentrator of claim 1, wherein the speed of the compressor varies with the amplitude of the compressor actuation current, said compressor actuation current varies with the PWM duty cycle provided...