IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0842139
(1977-10-14)
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발명자
/ 주소 |
- Wakeman Thomas G. (West Chester OH)
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출원인 / 주소 |
- The United States of America as represented by the Secretary of the Air Force (Washington DC 06)
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인용정보 |
피인용 횟수 :
18 인용 특허 :
0 |
초록
▼
A structurally compact air-to-air heat exchanger, for a gas turbine engine of the fan bypass type, that permits a lower percentage of cooling air, than is presently needed in the art, to cool effectively the hot turbine, and its parts, of the engine. This goal is achieved, in part, by using a portio
A structurally compact air-to-air heat exchanger, for a gas turbine engine of the fan bypass type, that permits a lower percentage of cooling air, than is presently needed in the art, to cool effectively the hot turbine, and its parts, of the engine. This goal is achieved, in part, by using a portion of the cool flow of fan air as a heat sink, without disturbing the flow of the fan air stream. The heat exchanger is disposed internal of the engine, and, it includes a plurality of flow tubes through which flows the hot cooling air, with the flow tubes positioned in a crossflow relationship with and to a portion of the cool flow of fan air. Three (3) variations of the preferred embodiment of the heat exchanger also are taught.
대표청구항
▼
A compact air-to-air heat exchanger, adapted for use in a gas turbine engine of the fan bypass type having a hot flow of cooling air, a cool flow of fan air, and a primary fan air stream duct in which a first portion of said cool flow of fan air flows, comprising: a. means for cooling said hot flow
A compact air-to-air heat exchanger, adapted for use in a gas turbine engine of the fan bypass type having a hot flow of cooling air, a cool flow of fan air, and a primary fan air stream duct in which a first portion of said cool flow of fan air flows, comprising: a. means for cooling said hot flow of cooling air; b. and, means for heating a second portion of said cool flow of fan air, with this said means in association with said cooling air cooling means; wherein said compact air-to-air heat exchanger is disposed internal of said bypass type gas turbine engine, whereby heat is transferred from said hot flow of cooling air to said second portion of said cool flow of fan air, thereby resulting in an exhaust flow of cooled cooling air; and wherein said means for cooling and said means for heating include, in common, a secondary fan air stream duct, adjacent to said primary air stream duct, through which flows said second portion of said cool flow of fan air, and, a plurality of flow tubes through which flows said hot cooling air, with said flow tubes disposed within and in transverse relationship to said secondary fan air stream duct, and are also simultaneously disposed in cross flow relationship with and to said second portion of said cool flow of fan air, and with said flow tubes having a plurality of circumferentially spaced, radially extending headers which are supported from and are connected to a common cooling air inlet manifold disposed radially inward therefrom and a plurality of circumferentially spaced, radially extending headers which are supported from and are connected to a common cooling air outlet manifold disposed radially inward therefrom.
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