JPS5620908A - Low-nox burner - Google Patents

Low-nox burner

Info

Publication number
JPS5620908A
JPS5620908A JP9612979A JP9612979A JPS5620908A JP S5620908 A JPS5620908 A JP S5620908A JP 9612979 A JP9612979 A JP 9612979A JP 9612979 A JP9612979 A JP 9612979A JP S5620908 A JPS5620908 A JP S5620908A
Authority
JP
Japan
Prior art keywords
temperature region
furnace
secondary air
air
primary air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9612979A
Other languages
Japanese (ja)
Other versions
JPS6225926B2 (en
Inventor
Masao Oikawa
Hitoshi Takasugi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP9612979A priority Critical patent/JPS5620908A/en
Publication of JPS5620908A publication Critical patent/JPS5620908A/en
Publication of JPS6225926B2 publication Critical patent/JPS6225926B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Air Supply (AREA)
  • Combustion Of Fluid Fuel (AREA)

Abstract

PURPOSE: To minimize generation of NOx while keeping stable combustion, by employing an arrangement capable of controlling the flow rate of primary air, distribution angle of secondary air to the furnace and the amount of combustion gas recirculated to a high-temperature region.
CONSTITUTION: A portion of combusting air A introduced into wind box 4 flows into sleeve 6 as primary air A1. Here, the flow rate of primary air is controlled by damper 9 such that partial pressure of oxygen in high-temperature region H formed in furnace 14 is lowered. On the other hand, secondary air A2 imparted with swirl by swirl vanes 13 is distributed in the manner of by-passing the high-temperature region H with a predetermined angle to the axis of burner. Therefore, density of oxygen in high-temperature region H is lowered and generation of NOx can be reduced. At the same time, pressure at high-temperature region H becomes lower than that at the section in furnace 14 where secondary air is passed. On the other hand, secondary air ejected into furnace 14 in the manner of enclosing high-temperature region H by the high kinetic energy possessed thereby immediately after ejection into furnace 14 loses energy gradually, so that its static pressure is raised.
COPYRIGHT: (C)1981,JPO&Japio
JP9612979A 1979-07-30 1979-07-30 Low-nox burner Granted JPS5620908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9612979A JPS5620908A (en) 1979-07-30 1979-07-30 Low-nox burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9612979A JPS5620908A (en) 1979-07-30 1979-07-30 Low-nox burner

Publications (2)

Publication Number Publication Date
JPS5620908A true JPS5620908A (en) 1981-02-27
JPS6225926B2 JPS6225926B2 (en) 1987-06-05

Family

ID=14156768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9612979A Granted JPS5620908A (en) 1979-07-30 1979-07-30 Low-nox burner

Country Status (1)

Country Link
JP (1) JPS5620908A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837018U (en) * 1981-08-28 1983-03-10 東陶機器株式会社 Premixed gas burner
JP2007024335A (en) * 2005-07-12 2007-02-01 Chugai Ro Co Ltd Combustion apparatus and flame forming unit used therefor
US7175423B1 (en) * 2000-10-26 2007-02-13 Bloom Engineering Company, Inc. Air staged low-NOx burner
US9212820B2 (en) 2010-01-15 2015-12-15 Lennox Industries Inc. Furnace burner box
US9335045B2 (en) 2010-01-15 2016-05-10 Lennox Industries Inc. Furnace, a method for operating a furnace and a furnace controller configured for the same
US9429338B2 (en) 2010-01-15 2016-08-30 Lennox Industries Inc. Furnace header box having blocked condensation protection, a furnace including the header box and a blocked condensation protection system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01124774U (en) * 1988-02-18 1989-08-24
JPH0320329U (en) * 1989-07-11 1991-02-27

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49124632A (en) * 1973-03-19 1974-11-28
JPS5055933A (en) * 1973-09-19 1975-05-16
JPS5164922U (en) * 1974-11-18 1976-05-21

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49124632A (en) * 1973-03-19 1974-11-28
JPS5055933A (en) * 1973-09-19 1975-05-16
JPS5164922U (en) * 1974-11-18 1976-05-21

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837018U (en) * 1981-08-28 1983-03-10 東陶機器株式会社 Premixed gas burner
US7175423B1 (en) * 2000-10-26 2007-02-13 Bloom Engineering Company, Inc. Air staged low-NOx burner
JP2007024335A (en) * 2005-07-12 2007-02-01 Chugai Ro Co Ltd Combustion apparatus and flame forming unit used therefor
US9541303B2 (en) 2010-01-15 2017-01-10 Lennox Industries Inc. Alternative-fuel gas orifice having principal-fuel gas orifice temperature profile and a heating, ventilation and air conditioning system incorporating the same
US9335045B2 (en) 2010-01-15 2016-05-10 Lennox Industries Inc. Furnace, a method for operating a furnace and a furnace controller configured for the same
US9429338B2 (en) 2010-01-15 2016-08-30 Lennox Industries Inc. Furnace header box having blocked condensation protection, a furnace including the header box and a blocked condensation protection system
US9212820B2 (en) 2010-01-15 2015-12-15 Lennox Industries Inc. Furnace burner box
US9561564B2 (en) 2010-01-15 2017-02-07 Lennox Industries Inc. Furnace burner box
US9765965B2 (en) 2010-01-15 2017-09-19 Lennox Industries Inc. Furnace, a method for operating a furnace and a furnace controller configured for the same
US9815154B2 (en) 2010-01-15 2017-11-14 Lennox Industries Inc. Furnace header box having blocked condensation protection, a furnace including the header box and a blocked condensation protection system
US9878404B2 (en) 2010-01-15 2018-01-30 Lennox Industries Inc. Condensation management system, a furnace including the same and a condensation collection box
US10253981B2 (en) 2010-01-15 2019-04-09 Lennox Industries Inc. Furnace, a method for operating a furnace and a furnace controller configured for the same
US10376999B2 (en) 2010-01-15 2019-08-13 Lennox Industries Inc. Alternative-fuel gas orifice having principal-fuel gas orifice temperature profile and a heating, ventilation and air conditioning system incorporating the same

Also Published As

Publication number Publication date
JPS6225926B2 (en) 1987-06-05

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