Title:
【発明の名称】斜流羽根車
Document Type and Number:
Japanese Patent JPH0660638
Kind Code:
B2
Abstract:
The disclosure is directed to a mixed flow impeller with a low noise, to be used for a blower of an air conditioner or the like. The mixed flow impeller of the present invention is characterized in three points, i.e., thin thickness blade member increased in its thickness only at its leading edge, a plate-like triangular protrusion provided at an outer peripheral portion of the leading edge, and blade curvature line having its maximum curvature position deviated toward the trailing edge side through employment of a cubic curve. Since each of the above features may be caused to function independently, noise reduction is possible even if it is executed singly, but the maximum effect is available when the are effected in combination.
Inventors:
Teruhiko Tomohiro
Masahiro Shin
Masahiro Shin
Application Number:
JP25287787A
Publication Date:
August 10, 1994
Filing Date:
October 07, 1987
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
F04D29/38; F04D23/00; F04D29/28; F04D29/66; F04D29/68; F24F13/24; (IPC1-7): F04D29/38; F04D29/66
Attorney, Agent or Firm:
Akira Kobiji (2 outside)
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