PROPELLER-SHAPED IMPELLER AND RAILWAY CARRIAGE AIR-CONDITIONING APPARATUS

Title:

PROPELLER-SHAPED IMPELLER AND RAILWAY CARRIAGE AIR-CONDITIONING APPARATUS

Document Type and Number:

WIPO Patent Application WO/2018/221295

Kind Code:

A1

Abstract:

A boss part (31) is placed on a bearing surface (42) in a state of being fitted to the rotary spindle (41) of a motor (40) and is rotated by the rotary spindle (41). An airflow-generating unit (32) has a plurality of vanes protruding to the outside in the radial direction of the rotary spindle (41) from each of the boss parts (31), generating an airflow by being rotated together with the boss parts (31). The boss part (31) has a first end surface (31a) which comes into contact with the bearing surface (42) when one end in the thickness direction is fitted to the rotary spindle (41) towards the bearing surface (42), and a second end surface (31b) which comes into contact with the bearing surface (42) when the other end in the thickness direction is fitted to the rotary spindle (41) towards the bearing surface (42). If the height of the airflow generating unit (32) from the first end surface (31a) is defined as A and the height of the airflow generating unit (32) from the second end surface (31b) is defined as B (where A≥B), the symmetry defined by A/B falls within the range of 1.0 to 1.3.

Inventors:

MURAKAMI HIROAKI (JP)
SHINGU WAHEI (JP)
NAKASHIMA SEIJI (JP)

Application Number:

PCT/JP2018/019502

Publication Date:

December 06, 2018

Filing Date:

May 21, 2018

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F04D29/38; B61D27/00; F04D29/32; F24F1/00

Foreign References:

JP2008019832A	2008-01-31
JPS615399U	1986-01-13
JPS5246129U	1977-04-01
JP2003048536A	2003-02-18
JP2006273099A	2006-10-12
JP2003048536A	2003-02-18
JP2017107436A	2017-06-15

Other References: