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Patent Searching and Data


Title:
NOZZLE-TYPE STEAM TRAP
Document Type and Number:
WIPO Patent Application WO/2015/016298
Kind Code:
A1
Abstract:
A purpose of the present invention is to provide an orifice-nozzle-type, Venturi-nozzle-type, and tunnel-structure resistance-tube-type steam trap that is capable of responding to changes in drain drainage amount that accompany, among other things, fluctuations in the operational pressure differential between a steam trap inlet and outlet and is capable of responding to fluctuations in the amount of steam used as a result of the driving conditions of steam-using equipment, external factors due to the seasons, or the like. Another purpose of the present invention is to provide a strainer filter that eliminates the strength insufficiencies that accompany the miniaturization of a strainer screen for a steam trap of the abovementioned types, that maintains the form of the screen, that enables easy mounting/removal of the screen to/from the strainer, and for which cleaning of the screen and other maintenance are easy. The steam strap of the present invention is an orifice-nozzle-type, Venturi-nozzle-type, and tunnel-structure resistance-tube-type steam trap that has a drain drainage amount adjustment mechanism that is a piping structure in which the height difference between a drain of a Venturi nozzle and a drain system outer discharge outlet is variable. Further, the strainer filter of the present invention is provided with a support body that reinforces the rigidity of a screen that is mounted to a strainer, the support body being provided on the inner side and/or outer side of the screen.

Inventors:
KATSURA, Tsutomu (22-7, Nakahara 2-chome Mitaka-sh, Tokyo 05, 〒1810005, JP)
Application Number:
JP2014/070163
Publication Date:
February 05, 2015
Filing Date:
July 31, 2014
Export Citation:
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Assignee:
ECO FIRST CO., LTD. (Grand Maison Shinjuku-higashi 204, 29-5 Shinjuku 1-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
International Classes:
F16T1/00; B01D35/02; B01D39/12; B01D39/16; B01D39/20
Foreign References:
JP2008309290A2008-12-25
JPH08278000A1996-10-22
JP2010065825A2010-03-25
JPH1190127A1999-04-06
JPH1190126A1999-04-06
JP2002310392A2002-10-23
JP2004162866A2004-06-10
JP2004190827A2004-07-08
JP2004218724A2004-08-05
JP2008309290A2008-12-25
US4426213A1984-01-17
US4745943A1988-05-24
US5060686A1991-10-29
US5123452A1992-06-23
US5429150A1995-07-04
US5628339A1997-05-13
JP2002257287A2002-09-11
JP2004230305A2004-08-19
US5120336A1992-06-09
JP2010156450A2010-07-15
Other References:
See also references of EP 3029368A4
Attorney, Agent or Firm:
TOMONO, Eizo (2-2-2-7B Nakacho, Musashino-shi Tokyo, 06, 〒1800006, JP)
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