WO1982004303A1 - Dispositif de combustion permettant de supprimer l'echappement d'oxyde d'azote et d'empecher la combustion incomplete - Google Patents

Dispositif de combustion permettant de supprimer l'echappement d'oxyde d'azote et d'empecher la combustion incomplete Download PDF

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Publication number
WO1982004303A1
WO1982004303A1 PCT/JP1982/000202 JP8200202W WO8204303A1 WO 1982004303 A1 WO1982004303 A1 WO 1982004303A1 JP 8200202 W JP8200202 W JP 8200202W WO 8204303 A1 WO8204303 A1 WO 8204303A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion
air
combustion chamber
burner
wire mesh
Prior art date
Application number
PCT/JP1982/000202
Other languages
English (en)
Japanese (ja)
Inventor
Electric Industrial Co Ltd Matsushita
Original Assignee
Kinpara Nobuyuki
Moriya Yoshifumi
Ohashi Tokuyoshi
Hara Masaichi
Ishikura Naoki
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
Priority claimed from JP56081767A external-priority patent/JPS57198946A/ja
Priority claimed from JP56081769A external-priority patent/JPS57198947A/ja
Application filed by Kinpara Nobuyuki, Moriya Yoshifumi, Ohashi Tokuyoshi, Hara Masaichi, Ishikura Naoki filed Critical Kinpara Nobuyuki
Priority to GB08301979A priority Critical patent/GB2111181B/en
Publication of WO1982004303A1 publication Critical patent/WO1982004303A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M11/00—Safety arrangements

Definitions

  • the present invention relates to a combustion device such as a so-called indoor open-type combustor that uses indoor air for combustion and discharges exhaust gas into a room], while improving combustion safety and reducing exhaust gas. It is to clean the combustion device.
  • a wire mesh burner shown in FIG. 2 can be considered as a means for compensating for the drawbacks of the above-mentioned Sheubunk burner and further reducing the temperature.
  • the fuel jetted from the gas nozzle 24 and the primary air sucked by the effect of the gas are mixed, and as a premixed gas, it passes through the gas mixture chamber 25 to the wire mesh.
  • Surface combustion is performed at the flame outlet 26.
  • An outer metal rod 2 is provided inside the wire mesh opening 26, and the outer periphery of the wire mesh burner 23 is provided so as to effectively take radiant heat from the red-hot wire mesh opening 26 to the outer periphery.
  • the wire mesh burner 23 has a smaller heat capacity at the flame opening compared to the Siban Knokna, so that the load can be reduced. It is possible to achieve low and low temperature. 29 is a combustion chamber, 30 is an auxiliary air port to compensate for primary air shortage when the primary air port is clogged, and 31 is a spark plug.
  • 29 is a combustion chamber
  • 30 is an auxiliary air port to compensate for primary air shortage when the primary air port is clogged
  • 31 is a spark plug.
  • the influence of the air flow with a large ratio occupied NO 2 wire mesh burner also affect the push from server down Kuba Ichina like the human body to perform the surface combustion on NOx, the inflow of air into the combustion chamber If the combustion load is too high, the temperature of the wire mesh is too high to cause backfire, and if the combustion load is too low, the generation of G0 increases.
  • there is a disadvantage that it is difficult to change the combustion amount.
  • the present invention relates to a combustion device such as an open-air type hot-air heater, which aims to reduce NOx and also to reduce N02, which has a large adverse effect on the human body.
  • Et al is a decrease in atmospheric oxygen concentration by poor ventilation, as well as primary air inlet packed]?
  • a combustion device such as a hot-air heater with a highly safe function that can reliably detect an incomplete combustion state due to a blocked hot air outlet and control combustion before the indoor air is contaminated. 5 to provide.
  • FIG. 1 is a side sectional view of a combustion device such as a hot-air heater in one embodiment of the present invention
  • FIG. 2 is a sectional view showing a conventional burner.
  • FIG. 1 is a side sectional view showing the principle of a hot air heater using the combustion device of the present invention.
  • 1 is a casing for a hot-air heater
  • 2 is a burner j
  • a primary air port 4 provided opposite a gas nozzle 3
  • a mixing pipe 5 a mixed-air chamber 6
  • a combustion cylinder It is composed of a flame port 8 composed of a wire mesh inside, an outer cylinder 9 of a combustion cylinder formed of a metal plate, and a combustion chamber 1 O having a closed structure for preventing inflow of secondary air.
  • a transition metal-based catalyst body 11 composed of a glass net, a wire net, etc. is provided.
  • the air sucked from the suction port 13 by the blower 12 sucks the combustion gas by the guide plate 14 and passes through the air passage 15 through the temperature 5 around the outer periphery of the combustion cylinder. It is blown from the air outlet 1 6.
  • 1 is the first gas ⁇
  • 18 is the governor
  • 19 is the second gas valve, which is ignited from the spark plug 21 by the control circuit 20.
  • the combustion detection element 22 It detects the output of the combustion detection element 22 from a transition metal oxygen concentration sensor such as 102, Sn02, etc., and controls the combustion.
  • a transition metal oxygen concentration sensor such as 102, Sn02, etc.
  • C the gas ejected from the gas nozzle 3
  • the air required for combustion is sucked from the primary air port 4 as primary air through the primary air port 4, and is guided into the air-fuel mixture chamber 6 while being mixed by the mixing pipe 5.
  • the air-fuel mixture is injected into the combustion chamber 1 O from the flame port 8 composed of a wire mesh, and at the same time, discharges and ignites with the spark plug 21, and performs surface combustion in the flame port 8.
  • the flame opening 8 is formed of a wire mesh, its heat capacity is small, and the outer cylinder 9 of the combustion cylinder 9 is made of a metal plate with little radiant heat, so that the flame maintains good combustion even at low load combustion. Mouth temperature is maintained. High.
  • the outer circumference of the outer cylinder 1 O of the combustion cylinder 7 is a mixed air passage “! 5”, so even if radiant heat is captured, it is cooled and the flame outlet S becomes abnormally hot. No backfire will occur.
  • a transition metal-based metal mesh such as stainless steel, molybdenum steel, iron-chromium steel, or a metal mesh in the exhaust gas passage downstream of the combustion chamber 1 o Since the medium 11 is provided in a high-temperature atmosphere of about 5 OO ° (up to OO), the catalyst 11 is reduced to NO 2 in the reduction catalyst and the exhaust gas to NO.
  • the catalyst body 11 prevents the air flow in the combustion chamber 1 O from being disturbed by the blower blower 12, and prevents the increase in the generation of G 0 gas, which is a problem particularly at low load combustion. .
  • the combustion chamber 1 O has a closed structure that does not allow air to flow in.
  • the combustion chamber 10 has a sealed structure that prevents the inflow of secondary air.] Since the air required for combustion is performed only with premixed air, Since the oxygen concentration in the combustion exhaust gas and the flammability in the combustion chamber have a completely constant relationship, the transitional oxygen concentration sensor, such as Sn02, Ti02, has a low oxygen concentration in the combustion detection element. Primary air clogging. ⁇ Wind blowout It is possible to detect deterioration of combustion state due to blockage of air outlet.
  • the combustion chamber is made to be a closed structure, the air flow is small, and the combustion is not affected by the air flow.
  • the NOx accounted NO 2 component in the combustion gas can rather small 3 ⁇ 4, and the oxygen concentration cell detected accurately incomplete combustion state in the combustion sensing element capacitors', before the indoor air is Okisome will stop burning It is possible to introduce a combustion device such as a hot air heater with high safety to stop the combustion.
  • N2 By reducing NO 2 in the exhaust gas to N 0, N2 can be further reduced.
  • the outer cylinder of the combustion cylinder of the surface combustion burner is made of a metal plate, which is cost-effective compared to conventional glass cylinders.
  • the premixed surface combustion burner is provided in the closed combustion chamber and the transition metal catalyst is provided downstream of the combustion chamber, NOx, particularly N02, can be reduced.
  • a clean combustion condition is obtained for the human body, and an oxygen concentration sensor is provided in the combustion chamber. J. Incomplete combustion is quickly and reliably detected and combustion is stopped to prevent accidents. Can be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

Dispositif de combustion possedant un bruleur de combustion de surface de melange prealable (2) dans une structure etanche disposee dans une chambre de combustion (10) empechant l'air secondaire de s'ecouler jusqu'a la surface de combustion pour supprimer la production de NO2 provoquee par l'oxydation de NO pendant la combustion, un catalyseur (11) d'une serie de metaux de transition etant dispose dans le passage posterieur de gaz d'echappement de la chambre de combustion (10) pour reduire la quantite de NO2 en reduisant le NO2 dans le gaz d'echappement en NO, et un detecteur de densite d'oxygene (22) etant dispose dans la chambre de combustion (10) de la structure etanche empechant l'air secondaire de s'ecouler a l'interieur, de maniere a permettre d'arreter la combustion lors de la detection d'un etat de combustion incomplete.
PCT/JP1982/000202 1981-05-27 1982-05-27 Dispositif de combustion permettant de supprimer l'echappement d'oxyde d'azote et d'empecher la combustion incomplete WO1982004303A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08301979A GB2111181B (en) 1981-05-27 1982-05-27 Combustion device for suppressing exhaust of nitrogen oxide and preventing incomplete combustion

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP56081767A JPS57198946A (en) 1981-05-27 1981-05-27 Hot air type room heater
JP81/81769810527 1981-05-27
JP56081769A JPS57198947A (en) 1981-05-27 1981-05-27 Hot air type room heater
JP81/81767 1981-05-27

Publications (1)

Publication Number Publication Date
WO1982004303A1 true WO1982004303A1 (fr) 1982-12-09

Family

ID=26422777

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1982/000202 WO1982004303A1 (fr) 1981-05-27 1982-05-27 Dispositif de combustion permettant de supprimer l'echappement d'oxyde d'azote et d'empecher la combustion incomplete

Country Status (3)

Country Link
AU (1) AU550281B2 (fr)
GB (1) GB2111181B (fr)
WO (1) WO1982004303A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU651673B2 (en) * 1991-03-21 1994-07-28 Semak Australia Pty. Ltd. Gas fired burner device
MX2007010988A (es) 2005-03-10 2007-09-25 Shell Int Research Sistema de transferencia de calor para la combustion de un combustible y el calentamiento de un fluido de proceso y proceso que utiliza el mismo.
BRPI0608345B1 (pt) 2005-03-10 2018-09-11 Shell Int Research métodos para dar partida em um sistema de aquecimento direto e em um dispositivo de aquisição de dados
RU2464494C1 (ru) * 2011-05-20 2012-10-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Северный (Арктический) федеральный университет" (С(А)ФУ) Топочное устройство с охлаждаемым подом

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50131855A (fr) * 1974-04-08 1975-10-18
JPS51142730A (en) * 1975-06-03 1976-12-08 Matsushita Electric Ind Co Ltd Gas burner with safety device
JPS51142732A (en) * 1975-06-04 1976-12-08 Matsushita Electric Ind Co Ltd Safety device for gas burner
JPS52129024A (en) * 1977-05-10 1977-10-29 Matsushita Electric Ind Co Ltd Gas burner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50131855A (fr) * 1974-04-08 1975-10-18
JPS51142730A (en) * 1975-06-03 1976-12-08 Matsushita Electric Ind Co Ltd Gas burner with safety device
JPS51142732A (en) * 1975-06-04 1976-12-08 Matsushita Electric Ind Co Ltd Safety device for gas burner
JPS52129024A (en) * 1977-05-10 1977-10-29 Matsushita Electric Ind Co Ltd Gas burner

Also Published As

Publication number Publication date
GB2111181A (en) 1983-06-29
GB2111181B (en) 1985-08-21
GB8301979D0 (en) 1983-02-23
AU550281B2 (en) 1986-03-13
AU8459782A (en) 1982-12-07

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