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Title:
TURBINE NOZZLE, TURBINE GENERATOR AND REFRIGERATING UNIT HAVING THE SAME
Document Type and Number:
Japanese Patent JP2010014095
Kind Code:
A
Abstract:

To provide a turbine nozzle capable of adjusting a flow rate, and restraining an energy loss in fluid.

This turbine nozzle 4 has a nozzle body 40 forming an inside flow passage 49 having a tapering-off flow passage 41 formed in a tapering-off shape toward the downstream side and an orifice part 42 arranged on the downstream end of the tapering-off flow passage 41, and a needle valve 9 for adjusting the flow rate of the fluid passing through the nozzle body 40. A needle 9 has a valve element 92 arranged in the tapering-off flow passage 41 so as to freely advance-retreat and adjusting opening of the orifice part 42. The valve element 92 is formed in a tapering-off shape in a tip part toward the downstream side of the inside flow passage 49, and a groove 97 extending toward the downstream side is formed on an outer peripheral surface 95a.


Inventors:
KOJIMA MAKOTO
HIWADA TAKESHI
Application Number:
JP2008177176A
Publication Date:
January 21, 2010
Filing Date:
July 07, 2008
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F03B1/04; F25B1/10
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura