Throttle device, and refrigeration cycle system including same
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United States of America Patent
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Oct 2, 2018
Grant Date -
Feb 2, 2017
app pub date -
Mar 27, 2015
filing date -
Apr 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
In a throttle device, a needle member (20) includes a tapered portion (20P) having a taper angle (2θ), and a length (X) along a center axis from a position (20PS) to an apical surface of the tapered portion (20P) is set to a value equal to or above a prescribed amount of lift (L′×cos2 θ), where the position (20PS) is a position corresponding to an edge (22as) of a valve port (22a) in a state where the tapered portion (20P) is inserted in the valve port (22a) and establishes a closed state of the valve port (22a).
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