High temperature heat resistant structure

• US 4,573,872 A
• Filed: 10/26/1983
• Issued: 03/04/1986
• Est. Priority Date: 12/27/1982
• Status: Expired due to Fees

• Current Assignee: Tokyo Shibaura Denki Kabushiki Kaisha (Toshiba Corporation)
• Original Assignee: Tokyo Shibaura Denki Kabushiki Kaisha (Toshiba Corporation)
• Inventors: Nakata, Yuji
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/545,646
• Time in Patent Office: 860 Days
• Field of Search: 244/117 A, 244/123, 244/158 A, 60/730, 60/753, 60/267, 138/147, 138/149, 138/151, 138/157, 138/161, 138/120, 415/134, 415/138, 415/139, 415/200, 416/229 A, 416/231 R, 416/231 B, 416/241 R, 416/241 A, 416/241 B, 416/96 A, 416/97 R, 416/97 A, 416/96 R, 416/219 R, 416/219 A, 428/632, 428/633, 428/608, 165/81, 165/169, 165/170, 165/171
• US Class Current: 416/96.00A
• CPC Class Codes: F01D 25/08 Cooling of machines or engines in general F01P; Heating; Heat-insulation of blade-carrying members, of blades F01D5/00
• CPC Class Codes: F01D 5/187 Convection cooling
• CPC Class Codes: F01D 5/284 Selection of ceramic materials
• CPC Class Codes: F05D 2260/231 Preventing heat transfer
• CPC Class Codes: Y10T 428/12444 Embodying fibers interengaged or between layers [e.g., paper, etc.]

Abstract

A heat resistance structure adapted to be used in a passage of a high temperature fluid, comprises a heat resistant metal plate having a smooth outer surface, a layer of a substance having a high heat transmission resistance extended along an internal surface of the metal plate, and heat conductive bodies provided in close contact with the layer, all being arranged in this order from the outer surface of the structure to the interior of the structure. A plurality of coolant passages are further provided through each of the heat conductive bodies.

Claims

1. A heat resistant structure adapted to be used in a passage through which flows a high temperature fluid, comprising:

a heat resistant metal plate having a smooth outer surface exposed to the fluid;

a layer of ceramic fiber material having a high heat transmission resistance extended along an internal surface of said metal plate;

a plurality of heat conductive bodies each spaced apart from adjacent bodies and each located in close contact with said ceramic fiber layer on a side thereof away from said metal plate, each of said heat conductive bodies being provided with a portion which is in slidable contact with a corresponding portion of the adjacent bodies; and

a plurality of passages provided through each of said heat conductive bodies for passing a coolant therethrough,

said heat resistant metal plate being provided with a plurality of projections on said internal surface thereof and each of said plurality of heat conductive bodies being provided with a recess engageable with respective ones of said plurality of projections with said ceramic fiber layer being interposed between each projection and respective recess.

2. A heat resistant structure as set forth in claim 1 wherein said heat conductive bodies are made of copper.

3. A heat resistant structure as set forth in claim 1 wherein said projections and recesses are formed to provide dovetail-shaped cross-sections engageable with each other.

4. A heat resistant structure as set forth in claim 3 wherein a reinforcing plate is further provided on the side of said heat conductive bodies away from the layer of the substance having a high heat transmission resistance.

5. A turbine blade made of a heat resistant structure as set forth in claim 1.