Trane International Inc.

Ramesh Vedula

Nathan Wagers

Karthik Sankar Ram

Ganesh Narayana

Srikanth Kanduri

A centrifugal fan for use as a blower in a heating, ventilation, air conditioning, and refrigeration (HVACR) system has a plurality of blades each having a leading edge camber angle of at or about 10 degrees to at or about 30 degrees, a trailing edge camber angle of at or about 10 degrees to at or about 30 degrees, a stagger angle of at or about 35 degrees to at or about 55 degrees, and a chord having a length L, wherein the length L over the diameter of the centrifugal fan divided by the diameter D satisfies the inequality 0.25&#x2264;L/D&#x2264;0.42. The fan blades having these parameters provide improved fan efficiency at certain operating conditions. The fan blades may further have a forward or radial sweep. The fan blades may have a uniform thickness from the leading edge to the trailing edge.

Backward curved plenum fan having enhanced efficiency

A blower and method of manufacturing a blower for a heating, ventilation, air conditioning, and refrigeration (HVACR) unit is disclosed. The blower includes a plurality of blower sections. Each section includes a first shroud, a second shroud spaced from the first shroud in a direction of a longitudinal axis of the blower, and a blade. The blade is formed such that a first end of the blade is joined with the first shroud and a second end of the blade is joined with the second shroud. A band is secured to the plurality of blower sections.

Growing community of inventors

Karnataka, India

Ramesh Vedula