Blowing fan and refrigerator having the same

Details Blowing fan and refrigerator having the same Blowing fan and refrigerator having the same

2005-09-27

2005-09-27

Jones, Melvin (Department: 3744)

Refrigeration

Gas controller or director

Cooled gas directed relative to cooled enclosure

C062S419000

Reexamination Certificate

active

06948332

ABSTRACT:
A blowing fan includes: a hub connected to a rotational shaft of a motor and receiving a driving force of the motor; and a plurality of blades connected at equal intervals in a circumferential direction of the hub and generating a blowing force, in which a connection between the blades and the hub has an area-reduced form in order to reduce a rigidity of the connection portion. The rigidity between a hub where a rotational shaft is fixed and a blade is weakened to lower a torsional resonant frequency of the rotational shaft. Thus, a noise of a refrigerator is considerably reduced.

REFERENCES:
patent: 5326225 (1994-07-01), Gallivan et al.
patent: 5536140 (1996-07-01), Wagner et al.
patent: 6027307 (2000-02-01), Cho et al.
patent: 6584799 (2003-07-01), Jung et al.
patent: 401325398 (1998-12-01), None

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