Title:
【発明の名称】連続環状スロットを使用する圧縮機抽気
Document Type and Number:
Japanese Patent JP2002536584
Kind Code:
A
Abstract:
A structure and a method to form the structure are provided for an impeller bleed passage of a compressor for a gas turbine engine. The compressor has an impeller assembly which includes an impeller rotor rotatably supported within an annular shroud having an inlet and an outlet. The shroud is made of two separate annular segments which are axially spaced apart. Each of the segments is supported separately and independently in a cantilevered manner. Such that a circumferentially continuous, uninterrupted annular slot is formed between the two segments and air passes through the slot without causing a dynamic component to affect the impeller rotor. The width of the slot is adjustable for different engines depending on the requirements of use of a particular engine. The width of the slot is also self-regulating in response to changes in the air pressure within the shroud because of the deformation of the segments. The structure is relatively simple and inexpensive to manufacture.
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Inventors:
Tremine, eric
Application Number:
JP2000597556A
Publication Date:
October 29, 2002
Filing Date:
February 02, 2000
Export Citation:
Assignee:
Pratt & Whitney Canada Corporation
International Classes:
F04D29/46; F04D27/02; F04D29/42; F04D29/44; (IPC1-7): F04D29/46; F04D29/42; F04D29/44
Attorney, Agent or Firm:
Fujiya Shiga (2 outside)