Liquid heaters and vaporizers – Steam treatment – Water tube boiler
Reexamination Certificate
2006-12-13
2011-10-25
Yuen, Henry (Department: 3742)
Liquid heaters and vaporizers
Steam treatment
Water tube boiler
C432S064000, C432S148000, C432S163000, C432S209000, C060S644100, C060S650000, C060S655000, C060S678000, C165S146000, C165S158000, C219S600000
Reexamination Certificate
active
08042498
ABSTRACT:
A superheated steam generator includes an introduction section for introducing saturated steam into hollow pipe members arranged as steam flow passages and acting as inductively heated elements, and a discharge section for discharging superheated steam from the flow passages, wherein a turbulence generator is disposed in each of the steam flow passages to accelerate heat transfer to the steam in the pipe members, wherein the turbulence generator is a zigzag bent member disposed in the steam flow passage, and a zigzag bending pitch of the bent member changes from rough to minute from the introduction section to the discharge section.
REFERENCES:
patent: 2510801 (1950-06-01), Chilowsky
patent: 2587530 (1952-02-01), Rossi
patent: 4056079 (1977-11-01), Reid et al.
patent: 2002270351 (2002-09-01), None
patent: 2003297537 (2003-10-01), None
JP2002-270351A and JP2003-297537A are machine translation.
Hiramatsu Yoshimasa
Hirayama Kotaro
Kogin Takashi
Dai-Ichi High Frequency Co. Ltd.
Dang Ket D
Westman, Hattori, Daniels & Adrian LLP
Yuen Henry
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