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Title:
BOILER SYSTEM
Document Type and Number:
Japanese Patent JP2015096784
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a boiler system capable of preventing high temperature water accumulated in a feed-water heater from boiling while a boiler is in combustion operation.SOLUTION: A boiler system comprises: a boiler 2 which has a feed-water heater 3 to heat water supplied to the boiler 2 by exhaust gas; a feed-water line L1 to supply the water to the boiler 2 through the feed-water heater 3; a feed-water flow rate adjustment section 11 which is arranged on the feed-water line L1 at an upstream side of the feed-water heating device 3 and adjusts a flow rate of the water W1 supplied to the feed-water heater 3; a water temperature detection section 12 which is arranged on the feed-water line L1 at a downstream side of the feed-water heater 3 and detects a temperature of the water W1 supplied to the boiler 2 from the feed-water heater 3; and a control section 10 which controls the feed-water flow rate adjustment section 11. The control section 10 controls the feed-water flow rate adjustment section 11 so that the water W1 is supplied to the feed-water heater 3 when water supply is not requested by the boiler 2 and a state, where the temperature of the water W1 detected by the feed-water temperature detection section 12 is equal to or higher than a reference temperature, lasts a preset period or longer.

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Inventors:
ONISHI TAKAAKI
YAHAGI YOICHI
Application Number:
JP2013236997A
Publication Date:
May 21, 2015
Filing Date:
November 15, 2013
Export Citation:
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Assignee:
MIURA KOGYO KK
International Classes:
F22D5/26; F22D11/06
Domestic Patent References:
JP2012072991A2012-04-12
JPH0462306A1992-02-27
JP2012002385A2012-01-05
JPH1182914A1999-03-26
JP2012002384A2012-01-05
JPH0245310U1990-03-28
JPH09236207A1997-09-09
JP2008298308A2008-12-11
JPH0828804A1996-02-02
JPH01193506A1989-08-03
JP2002250503A2002-09-06
Foreign References:
US6196163B12001-03-06
Attorney, Agent or Firm:
Iwaike Mitsuru
Ryota Kato



 
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