Double-ended blower and volutes therefor

A double-ended 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 double-ended blower can provide faster pressure response a...

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Bibliographic Details
Main Authors MARTIN DION CHARLES C, VIRR ALEXANDER, FU TIMOTHY TSUN-FAI, LEA STEPHEN A, DALY GEOFFREY D, REED NICHOLAS J, PUCKERIDGE LARRY
Format Patent
LanguageEnglish
Published 28.06.2005
Edition7
Subjects
BLASTING
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
HEATING
HUMAN NECESSITIES
HYGIENE
LIGHTING
MECHANICAL ENGINEERING
MEDICAL OR VETERINARY SCIENCE
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:A double-ended 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 double-ended 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.
Bibliography:Application Number: US20010360757