Simplified Fan Guard
Original Publication Date: 1989-Feb-01
Included in the Prior Art Database: 2005-Jan-27
This article describes a fan guard which is designed to allow more air flow with less restrictions for better cooling. Many commercially available fan guards have 7 to 10 rings with from 35 to 60 welds. An example of such a design is shown in Fig. 1. The design disclosed herein is shown in Fig. 2. It has three rings and 15 welds (three butt welds for rings and 12 welds at intersections of rings and mounting wires). Increasing the diameter of the rings from .062" TO .072" ALLOWS THE DISTANCE BETWEEN RINGS TO BE INCREASED. THE increase in wire diameter increases the strength between wires and will pass Underwriters Laboratory (UL) and Canadian Standards Association (CSA) requirements. The mounting wires align with the fan support bars to reduce air resistance and noise.