| 摘要 |
<p>This invention relates to a reversible unidirectional-flow liquid pump.
<??>The pump includes a pumping assembly comprising a gerotor type of gear-set (46, 50), and has its inlet (66-68) in series fluid-flow connection with a valve (70) adapted, upon reversal of the direction of pump rotation, to cause a hydraulic lock to be formed in the gear-set whereby the pumping assembly is repositioned such as to ensure continued unidirectional liquid flow despite the reversal of rotation.
<??>The pump, which is particularly suitable for use as an oil pump in refrigerant compressors, does not rely upon friction in repositioning the pumping assembly. </p> |
