Sound attenuation for HVAC devices

US11725846B2 · kind B2 · utility

Assignee

• TRANE INTERNATIONAL INC. · US

Inventors

• Yogesh Pandit · Bengaluru, IN
• Richard Lee Jameson · Tyler, US
• Zubin Varghese · Kanchinakote, IN
• John Bailey · Huntersville, US
• Lance Lindenberg · La Vergne, US
• Thomas Gort · Tyler, US
• Shiva Prasad Keralapura Basavaraju · Tyler, US
• Kevin Joseph Ligi · Tyler, US

Key dates

• Filing date: Mar 31, 2021
• Grant date: Aug 15, 2023
• Expiry date: Aug 10, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F24F2013/242
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Example embodiments of the present disclosure relate to improved HVAC devices and kits for HVAC devices that improve the sound attenuation associated with the device, particularly low-frequency noise. An example embodiment includes an improved furnace including a housing with a combustion air chamber, a heat exchanger chamber, and a circulation blower chamber, wherein the combustion air chamber comprises a burner assembly and a combustion air fan, the furnace also includes a sound attenuation layer including a first acoustic metamaterial layer coupled to the combustion air chamber and tuned to attenuate sound for a first frequency band, one or more housing openings fluidly connecting the combustion air chamber to an environment outside the housing, wherein the sound attenuation layer includes a discontinuous section that aligns with one or more of the housing openings.