US 4,382,239 A · Waveguide cooling system

Waveguide cooling system

OwnerAlan M. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace, Bill C. J. Chen +1inventors

InventorsAlan M. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace, Bill C. J. Chen, Robert W. Hartop

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Abstract

An improved system is described for cooling high power waveguides by the use of cooling ducts extending along the waveguide, which minimizes hot spots at the flanges where waveguide sections are connected together. The cooling duct (24) extends along substantially the full length of the waveguide section, and each flange (18, 20) at the end of the section has a through hole (36) with an inner end connected to the duct and an opposite end that can be aligned with a flange hole in another waveguide section. Each flange (20) is formed with a drainage groove (60) in its face, between the through hole (36) and the waveguide conduit (16) to prevent leakage of cooling fluid into the waveguide. The ducts have narrowed sections (32, 34) immediately adjacent to the flanges to provide room for the installation of fasteners closely around the waveguide channel.

Claims7

Dependent claims

A microwave waveguide, comprising:

a waveguide section which includes a conduit pipe forming a microwave conduit and having a pair of pipe ends, a flange mounted at either end of the pipe, and walls forming a cooling duct extending along the length direction of said conduit and lying beside said conduit pipe;
at least one of said flanges having a through hole therein laterally spaced from said conduit and having one hole end coupled to said cooling duct.

Dependencies are inferred from the claim text.