PUMP INCLUDING A SHIELD FOR PROTECTING A PUMP WHEEL AGAINST A COOLANT LEAK ALONG THE HUB OF THE WHEEL
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United States of America Patent
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Issued Date -
Jan 7, 2016
app pub date -
Feb 11, 2014
filing date -
Feb 20, 2013
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Abstract
A pump is provided. The pump includes a flow chamber for the heat-transport fluid, a pump wheel which is placed entirely in the flow chamber and which comprises a hub, a shaft for rotating the pump wheel, having an axial end section rigidly connected to the pump wheel and fitted in the hub of the pump wheel, a motor for rotating the shaft around its axis, and means for causing a coolant for cooling the driveshaft to flow, at a temperature lower than that of the heat-transport fluid, along the driveshaft. The pump also includes a shield for protecting the pump wheel against a coolant leak along an outer peripheral surface of the hub of the pump wheel, the protective shield being attached to the pump wheel.
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