US2019003333A1PendingUtilityA1

Thermally driven spring valve for turbine gas path parts

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Assignee: UNITED TECHNOLOGIES CORPPriority: Jan 7, 2016Filed: Aug 24, 2018Published: Jan 3, 2019
Est. expiryJan 7, 2036(~9.5 yrs left)· nominal 20-yr term from priority
Inventors:Tracy A. Propheter-HinckleyLane Thornton
F05D 2260/20Y02T50/676F01D 9/02F05D 2300/17F05D 2240/81F05D 2240/12F01D 5/189F05D 2240/126F16K 15/16F05D 2300/50212F16K 31/002F05D 2300/143F05D 2220/32F01D 17/12F01D 25/12F01D 17/105Y02T50/60
58
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Claims

Abstract

A thermally driven spring valve for turbine gas path parts is disclosed herein. A thermally driven spring valve includes a bimetallic sheet comprising a base, a first finger portion extending from the base and a second finger portion extending from the base, the first finger portion having a first curvature vector and the second finger portion have a second curvature vector, wherein an exterior surface extends from the base through the first finger portion and the second finger portion and an interior surface extends from the base through the first finger portion and the second finger portion, wherein the exterior surface of the first finger portion is disposed proximate the interior surface of the base wherein the exterior surface of the second finger portion is disposed proximate the interior surface of the base. A thermally driven spring valve may include perforations through a finger portion.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A thermally driven spring valve comprising:
 a metallic sheet comprising a base mount portion and a floating portion having a curvature vector, wherein the base mount portion is coupled to a wall of a chamber, wherein the floating portion is disposed proximate an aperture in the wall.   
     
     
         2 . The thermally driven spring valve of  claim 1 , wherein the metallic sheet is coupled to the wall of the chamber by at least one of brazing or welding. The thermally driven spring valve of  claim 1 , wherein the metallic sheet is a bimetallic sheet. 
     
     
         4 . The thermally driven spring valve of  claim 1 , wherein the metallic sheet comprises at least one of steel, titanium, titanium alloy, cobalt, cobalt alloy, platinum, or platinum alloy. 
     
     
         5 . The thermally driven spring valve of  claim 1 , wherein the metallic sheet has a coefficient of thermal expansion of between about 0.6×10 −6 /K to about 25×10 −6 /K. 
     
     
         6 . The thermally driven spring valve of  claim 1 , wherein the chamber is coupled to a baffle.

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