发明名称 |
Blowing fan and refrigerator having the same |
摘要 |
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.
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申请公布号 |
US6948332(B2) |
申请公布日期 |
2005.09.27 |
申请号 |
US20040758105 |
申请日期 |
2004.01.16 |
申请人 |
LG ELECTRONICS INC. |
发明人 |
LEE DONG IL;SHIN HYOUN JEONG |
分类号 |
F04D29/32;F04D29/34;F04D29/38;F04D29/66;F25D17/06;(IPC1-7):F25D17/04 |
主分类号 |
F04D29/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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