公开(公告)号：US12098856B2

公开(公告)日：2024-09-24

申请号：US17779712

申请日：2020-12-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian D. Gale ,  Andrew R. Fox ,  Alonso M. Hernandez ,  Gregory G. Jager ,  Abby R. Lemon ,  Nicolas W. Tremain

IPC: B01D46/42 ,  F24F8/108 ,  F24F11/52 ,  F24F110/50

CPC classification number: F24F11/52 ,  B01D46/4254 ,  F24F8/108 ,  B01D2279/50 ,  F24F2110/50

Abstract: A powered room air purifier with a visual indicator of air quality, the visual indicator including: a reflector that defines a forwardly-open-ended reflecting cavity and that includes at least one through-opening in a floor or ceiling of the reflector; at least one diffuser layer that covers the forward opening of the forward-open-ended reflecting cavity; and, at least one LED light source that is positioned within the at least one through-opening, the LED light source and the reflector being configured so that the LED light source is shielded from line-of-sight view along a forward-rearward axis of the powered room air purifier.

公开(公告)号：US20220404054A1

公开(公告)日：2022-12-22

申请号：US17779712

申请日：2020-12-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian D. Gale ,  Andrew R. Fox ,  Alonso M. Hernandez ,  Gregory G. Jager ,  Abby R. Lemon ,  Nicolas W. Tremain

IPC: F24F11/52 ,  F24F8/108 ,  B01D46/42

Abstract: A powered room air purifier with a visual indicator of air quality, the visual indicator including: a reflector that defines a forwardly-open-ended reflecting cavity and that comprises at least one through-opening in a floor or ceiling of the reflector; at least one diffuser layer that covers the forward opening of the forward-open-ended reflecting cavity; and, at least one LED light source that is positioned within the at least one through-opening, the LED light source and the reflector being configured so that the LED light source is shielded from line-of-sight view along a forward-rearward axis of the powered room air purifier.

公开(公告)号：US12259160B2

公开(公告)日：2025-03-25

申请号：US17628780

申请日：2020-08-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian D. Gale ,  Andrew R. Fox ,  Alonso M. Hernandez ,  Nicolas W. Tremain

IPC: F24F8/80 ,  F24F13/28

Abstract: A powered room air purifier including a non-movable air filter holder. The room air purifier may include at least one guide ramp located at an upper end of the air filter holder. An air filter may be installed into the air filter holder by a combination of translational and rotational movement of the air filter.

公开(公告)号：US20220381461A1

公开(公告)日：2022-12-01

申请号：US17628780

申请日：2020-08-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian D. Gale ,  Andrew R. Fox ,  Alonso M. Hernandez ,  Nicolas W. Tremain

IPC: F24F8/80 ,  F24F13/28

Abstract: A powered room air purifier including a non-movable air filter holder. The room air purifier may include at least one guide ramp located at an upper end of the air filter holder. An air filter may be installed into the air filter holder by a combination of translational and rotational movement of the air filter.