HVAC systems and methods with improved heat exchangers

US9714775B2 · kind B2 · utility

Assignee

• Lennox Industries Inc. · US

Inventors

• Kirankumar A. Muley · Pune, IN
• Kapil Das Sahu · Pune, IN
• Glenn W. Kowald · Carrollton, US
• Ajay Chidambaram Pillai Swornalatha · Kanyakumari, IN
• Ian Burmania · Carrollton, US
• John W. Whitesitt · Garland, US
• Donald N. Zimmer · Marshalltown, US

Key dates

• Filing date: Jun 25, 2014
• Grant date: Jul 25, 2017
• Expiry date: Aug 18, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B30/00
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Systems, tools, and methods are presented that enable a plurality of turbulators to enhance heat transfer within a heat exchanger of a heating, ventilating, and air conditioning (HVAC) system. The plurality of turbulators each include a ribbon member having a variable pattern formed over a length. In one instance, the variable pattern of the ribbon member includes a plurality of bends defining intervals of alternating pitch. The intervals progressively increase in dimension as the ribbon member is traversed over the length. In another embodiment, the intervals contain apertures whose area increases as the length is traversed. Other systems, tools and methods are presented.