Title:
CENTRIFUGAL BLOWER
Document Type and Number:
WIPO Patent Application WO/2018/151013
Kind Code:
A1
Abstract:
A centrifugal blower includes a turbofan. The turbofan includes a plurality of blades (52), a shroud ring (54), and a main plate. Each of the plurality of blades has a front edge (525), which is an edge located closer to the inner side than the shroud ring is in the radial direction of the turbofan, and a rear edge (526), which is an edge of the blade located on the outer side in the radial direction of the turbofan. The front edge has an other-side area (R1), which is located on the other side in the rotational axis direction in the front edge, and a one-side area (R2), which is located closer to one side in the rotational axis direction than the other-side area in the front edge is. The one-side area is located closer to the one side in the rotational axis direction than the rear edge is. One or a plurality of steps (53) are provided only in a portion of the front edge and in at least one of the one-side area and the other-side area.
Inventors:
ISHII FUMIYA (JP)
ODA SHUZO (JP)
ODA SHUZO (JP)
Application Number:
PCT/JP2018/004463
Publication Date:
August 23, 2018
Filing Date:
February 08, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F04D29/30; F04D29/66
Foreign References:
| JPH01174598U | 1989-12-12 | |||
| JPH04171299A | 1992-06-18 | |||
| JP2007205268A | 2007-08-16 | |||
| JP2002364591A | 2002-12-18 | |||
| JP2010053803A | 2010-03-11 | |||
| US9133849B2 | 2015-09-15 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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