Heat pipe for transferring heat
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United States of America Patent
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-
Nov 1, 1994
Grant Date -
N/A
app pub date -
Jul 8, 1993
filing date -
Jul 8, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heat pipe has at least one liquid flow channel and one vapor flow channel for the movement of the heat carrier fluid from the evaporator end to the condenser end and vice versa. The liquid flow channel is so constructed that the capillary radius of its cross-sectional area increases from the evaporator end to the condenser end of the heat pipe, preferably in a continuous manner. Further, the evaporator end of the pipe is provided with a closure member for communicating the liquid flow channel with the vapor flow channel for replenishing the liquid in the evaporating end if necessary. Opening of the closure member also permits gas and/or vapor bubbles that have been collected in the liquid flow channel to pass into the vapor channel. The closure member may be operated by an electromagnetic valve.
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