Device and method for discharging liquid material
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United States of America Patent
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Aug 2, 2022
Grant Date -
Sep 29, 2016
app pub date -
Nov 5, 2014
filing date -
Nov 6, 2013
priority date (Note) -
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Abstract
A discharge device and method can eliminate the influence of pump pulsation while temperature reduction of liquid material is minimized. The discharge device includes a nozzle (19) having a discharge port (28) a valve seat (31) having a communication bore (30) communicating with the discharge port, a liquid chamber (33) extending vertically, a needle (4) for opening and closing the communication bore of the valve seat, and a circulation flow passage through which the liquid material is supplied to the liquid chamber. The device further includes a rod-shaped flow passage formation member (34) provided with an outer flow passage (36) having a top opening (40) formed at an upper end and a bottom opening (41) formed at a lower end, and with an inner flow passage (35) having a bottom opening (41) in communication with an outer flow passage and a top opening (38).
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