公开(公告)号：US20240257792A1

公开(公告)日：2024-08-01

申请号：US18103720

申请日：2023-01-31

Applicant: SharkNinja Operating LLC

Inventor： Max Lacoma

IPC: G10K11/16 ,  A47J43/07

CPC classification number: G10K11/161 ,  A47J43/07 ,  G10K11/172

Abstract: An acoustic muffler for reducing noise emitted by a motorized food processing device is disclosed. The acoustic muffler includes a central chamber connected to both an inlet chamber and an outlet chamber. The inlet chamber is positioned to receive air and noise emitted by the food processing device's motor and the outlet chamber is open to the external environment. The cross-sectional area of the central chamber is at least three times greater than or three times less than the cross-sectional areas of the inlet chamber and the outlet chamber. By adjusting the relative cross-sectional areas of the inlet chamber, central chamber, and outlet chamber, the acoustic muffler can be tuned to reduce noise emitted by the food processing device in a specific frequency range. Additionally, since the acoustic muffler permits air to flow freely to and from the device's motor, cooling of the motor is not significantly impacted.