BOILER - MITSUBISHI HEAVY IND MARINE MACHINERY & EQUIPMENT CO LTD

Title:

BOILER

Document Type and Number:

WIPO Patent Application WO/2020/170622

Kind Code:

A1

Abstract:

Provided is a boiler such that even if a large-capacity main burner is operating and a small-capacity sub-burner is not operating, it is possible to cool the sub-burner. The boiler comprises: a combustion vessel (11) that forms a combustion chamber (24); a main burner that is disposed in the combustion vessel (11); a sub-burner (13) that is disposed in the combustion vessel (11), disposed downstream of the flame formed by the main burner, and has a smaller capacity than the main burner; a sub-burner wind box (40) that accommodates the sub-burner (13) and is attached to the combustion vessel (11); a sub-burner air fan (44) that supplies air to the sub-burner wind box (40); and a control unit that controls the sub-burner air fan (44). The control unit controls the sub-burner air fan (44) so that the pressure in the sub-burner wind box (40) becomes higher than the pressure in the combustion vessel (11), when the main burner is operating and the sub burner (13) is not operating.

Inventors:

TERAHARA TAKAZUMI (JP)
MORI MASAFUMI (JP)
NAKAMURA RYUTA (JP)
AMANO HIDEKI (JP)

Application Number:

PCT/JP2020/000220

Publication Date:

August 27, 2020

Filing Date:

January 08, 2020

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI HEAVY IND MARINE MACHINERY & EQUIPMENT CO LTD (JP)

International Classes:

F22B31/00; F23D14/78

Domestic Patent References:

WO2009078191A1

2009-06-25

Foreign References:

JP2018141585A	2018-09-13
JPH01121612A	1989-05-15
JPH09210325A	1997-08-12
JPS62172905U	1987-11-02
JPS5523870A	1980-02-20
JP2008014574A	2008-01-24
JP2005233483A	2005-09-02
JP2016194408A	2016-11-17
JPS58122804U	1983-08-20
JPS5747107A	1982-03-17
JPS59170601A	1984-09-26
KR20130001432A	2013-01-04
JPS5781999U	1982-05-20

Other References: