Geoffrey Daniel Daly,Alexander Virr,Stephen Anthony Lea,Dion Charles Chewe Martin,Nicholas Jerome Reed,Larry Puckeridge,Timothy Tsun-Fai Fu
申请号：
US13954300
公开号：
US20140041663A1
申请日:
2013.07.30
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A multiple stage variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the multiple stage blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.
