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公开(公告)号：AU2021379136A9
公开(公告)日：2025-01-16
申请号：AU2021379136
申请日：2021-11-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： KREPEL KENNETH J , JENSEN DOUGLAS D , POCH JAMES F , BISSEN DALE M , PARHAM MICHAEL L
Abstract: A blower/filtration unit for a powered air purifying respirator (PAPR) is presented that includes a motor configured to operate in a standard mode and in a high magnetic field (HMF) mode. The unit also includes a magnetic field sensor. The unit also includes a controller comprising a control mode switching function. The controller executes the control function upon detection of a magnetic field strength that exceeds a reference threshold magnetic field strength. The control function switches the motor operation from the standard mode to the HMF mode.
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公开(公告)号：AU2021379136A1
公开(公告)日：2023-06-22
申请号：AU2021379136
申请日：2021-11-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： KREPEL KENNETH J , JENSEN DOUGLAS D , POCH JAMES F , BISSEN DALE M , PARHAM MICHAEL L
Abstract: A blower/filtration unit for a powered air purifying respirator (PAPR) is presented that includes a motor configured to operate in a standard mode and in a high magnetic field (HMF) mode. The unit also includes a magnetic field sensor. The unit also includes a controller comprising a control mode switching function. The controller executes the control function upon detection of a magnetic field strength that exceeds a reference threshold magnetic field strength. The control function switches the motor operation from the standard mode to the HMF mode.
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公开(公告)号：AU2021379311A9
公开(公告)日：2025-01-09
申请号：AU2021379311
申请日：2021-11-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： JENSEN DOUGLAS D , KREPEL KENNETH J , POCH JAMES F , BISSEN DALE M , PARHAM MICHAEL L , MARTINSON PAUL A
IPC: A62B18/00
Abstract: A blower/filtration unit for a powered air purifying respirator (PAPR) includes a motor configured to operate according to a motor control algorithm. The blower/filtration unit also includes a first pressure sensor positioned at an inlet of the blower/filtration unit. The blower/filtration unit also includes a second pressure sensor positioned at an outlet of the blower/filtration unit. The blower/filtration unit also includes a motor controller that executes the motor control algorithm. The motor control algorithm determines a motor speed required to maintain an airflow rate based on signals from the first and second pressure sensors.
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公开(公告)号：AU2021379136B2
公开(公告)日：2024-10-03
申请号：AU2021379136
申请日：2021-11-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： KREPEL KENNETH J , JENSEN DOUGLAS D , POCH JAMES F , BISSEN DALE M , PARHAM MICHAEL L
Abstract: A blower/filtration unit for a powered air purifying respirator (PAPR) is presented that includes a motor configured to operate in a standard mode and in a high magnetic field (HMF) mode. The unit also includes a magnetic field sensor. The unit also includes a controller comprising a control mode switching function. The controller executes the control function upon detection of a magnetic field strength that exceeds a reference threshold magnetic field strength. The control function switches the motor operation from the standard mode to the HMF mode.
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