发明名称 |
Sewing machine with a cooling system |
摘要 |
The sewing machine includes a drive shaft which is rotatably mounted in a housing and is connected to a needle to reciprocate the needle at a stitching area in order to effect sewing of material. A fan blade or impeller is affixed to the main shaft for rotation therewith, and it rotates in a chamber in the housing and is constructed with a central inlet opening to pull in air centrally and to discharge it radially downwardly into a lower extension below the oil pan of the sewing machine. The lower extension includes a plurality of ribs extending downwardly from the bottom wall of the oil pan which forms heat exchanger surfaces over which air from the blower is directed. The heat exchange surfaces are arranged in the form of longitudinally extending ribs which extend substantially parallel to the shaft and they define air flow channels therebetween.
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申请公布号 |
US4154182(A) |
申请公布日期 |
1979.05.15 |
申请号 |
US19780867352 |
申请日期 |
1978.01.05 |
申请人 |
PFAFF INDUSTRIEMASCHINEN GMBH |
发明人 |
KLUNDT, KURT |
分类号 |
D05B71/00;(IPC1-7):D05B71/00 |
主分类号 |
D05B71/00 |
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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