公开(公告)号：US20240245191A1

公开(公告)日：2024-07-25

申请号：US18289569

申请日：2022-04-28

Applicant: Dyson Technology Limited

Inventor： Wei Jie LAM ,  Apoorv AGHA ,  Clement Jian Ming TAN ,  Nicklaus YU

IPC: A45D20/12

CPC classification number: A45D20/122

Abstract: Disclosed is an attachment for a hair care appliance that has an air inlet end for receiving an airflow from the appliance, an air outlet end for emitting the airflow from the attachment, a wall defining and extending about an airflow path for the airflow and a noise attenuation member surrounded by the wall. The noise attenuation member is configured to guide the airflow along at least part of the airflow path.

公开(公告)号：US20240237800A1

公开(公告)日：2024-07-18

申请号：US18288671

申请日：2022-04-19

Applicant: Dyson Technology Limited

Inventor： Yuen Kee LEOW ,  Weifu YU ,  Clement Jian Ming TAN ,  Xinyi LI ,  Gaudencio III Racho TEVES ,  Stephen John WOOLAGHAN ,  Kishan Mayur AMRATIA ,  Jack Michael THOMPSON ,  Brian William WEEKS ,  Teng Lee KHOO

IPC: A45D20/12

CPC classification number: A45D20/12

Abstract: A haircare appliance includes a pressure sensor for generating a pressure signal indicative of air pressure within an airflow path, the pressure sensor being upstream of an airflow generator. A controller is configured to estimate, based at least partly on the pressure signal, a blockage factor corresponding to an amount by which the airflow path is blocked. When the estimated blockage factor exceeds a blockage warning threshold, a warning indicative of a partial blockage is output. When the estimated blockage factor exceeds a critical threshold, the critical threshold being higher than the blockage warning threshold, a power output of at least one component of the haircare appliance is turned off or reduced.