WO2010110147A1 - Carburateur à kérosène - Google Patents

Carburateur à kérosène Download PDF

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Publication number
WO2010110147A1
WO2010110147A1 PCT/JP2010/054548 JP2010054548W WO2010110147A1 WO 2010110147 A1 WO2010110147 A1 WO 2010110147A1 JP 2010054548 W JP2010054548 W JP 2010054548W WO 2010110147 A1 WO2010110147 A1 WO 2010110147A1
Authority
WO
WIPO (PCT)
Prior art keywords
kerosene
air
flow path
vaporization pot
pot
Prior art date
Application number
PCT/JP2010/054548
Other languages
English (en)
Japanese (ja)
Inventor
暁 山本
Original Assignee
新日本石油株式会社
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 新日本石油株式会社 filed Critical 新日本石油株式会社
Publication of WO2010110147A1 publication Critical patent/WO2010110147A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners

Definitions

  • the present invention relates to a kerosene vaporizer that vaporizes kerosene, which is used to supply a mixed gas of kerosene and air to a surface combustion burner.
  • Patent Document 1 For example, as disclosed in Patent Document 1, most of the surface combustion burners are for burning gaseous fuel. In this case, a vaporizer for vaporizing the fuel is unnecessary.
  • Patent Document 2 discloses a surface combustion burner using kerosene, which is a liquid fuel, as fuel. Patent Document 2 also describes a vaporizer.
  • ⁇ Unlike surface combustion burners that use gaseous fuel as a fuel, surface combustion burners that use kerosene as a fuel are prone to backfire.
  • the spontaneous ignition temperature of methane which is the main component of natural gas, is about 550 ° C.
  • the spontaneous ignition temperature of kerosene is as low as about 260 ° C.
  • suppressing the temperature of the burner is an effective means for preventing flashback.
  • a coolant is supplied to the surface combustion burner, and the flow path through which the gas mixture of vaporized kerosene and combustion air passes is cooled from the outside by the coolant, and a backfire occurs. Therefore, it is desirable to control the temperature so that kerosene vapor in the mixed gas does not condense.
  • Air (cooling air) can be used as the coolant.
  • the air pump for supplying air to each of the combustion air and the cooling air, the flow meter for measuring the flow rate, and the measured value by the flow meter
  • a control device for controlling the output of the air pump is required. This has been a cause of high cost and complexity.
  • An object of the present invention is to provide a kerosene vaporizer that makes it possible to avoid the need for an air pump, a flow meter and a control device for both combustion air and cooling air, respectively.
  • a kerosene vaporizer for supplying a gas mixture of vaporized kerosene and air to a surface combustion burner, A kerosene vaporization pot with a heater for vaporizing kerosene inside; A kerosene passage, which is a passage communicating with the interior of the kerosene vaporization pot, for introducing kerosene into the kerosene vaporization pot; A first air flow path, which is a flow path communicating with the interior of the kerosene vaporization pot, for introducing air into the kerosene vaporization pot; A mixed gas flow path, which is a flow path communicating with the interior of the kerosene vaporization pot, for discharging the mixed gas of vaporized kerosene and air from the kerosene vaporization pot; A second air flow path that is a flow path branched from the first air flow path; and A kerosene vaporizer is provided that includes an orifice
  • the inner diameter of the orifice is 33-40% of the inner diameter of the second air flow path; and A kerosene vaporizer in which the length of the orifice is 25 to 40% of the diameter in the orifice is preferable.
  • a heater is inserted into the hole, The wall surface of the hole and the heater are in contact with each other, or the wall surface of the hole and the heater are close to each other with an interval of 1 mm or less.
  • a kerosene vaporizer is preferred.
  • the kerosene flow path passes through the opening to the kerosene vaporization pot of the first air flow path;
  • a kerosene vaporizer in which the opening of the kerosene passage to the kerosene vaporization pot is located directly above the kerosene vaporization surface of the kerosene vaporization pot is preferred.
  • the present invention provides a kerosene vaporizer that can avoid the need for an air pump, a flow meter, and a control device for both combustion air and cooling air, respectively.
  • the kerosene vaporizer shown in FIG. 1 is a kerosene vaporizer for supplying a gas mixture of vaporized kerosene and air to a surface combustion burner, and includes the following components.
  • a kerosene vaporization pot 2 provided with a heater 6 for vaporizing kerosene inside.
  • a flow path (kerose oil flow path 7) communicating with the inside of the kerosene vaporization pot for introducing kerosene into the kerosene vaporization pot.
  • a flow path (first air flow path) communicating with the kerosene vaporization pot for introducing air into the kerosene vaporization pot.
  • the first air flow path includes a supply air flow path 1, a branching section 10, and a combustion air flow path 11.
  • the first air channel opens into the kerosene vaporization pot at the opening 9.
  • a flow path (mixed gas flow path 3) communicating with the inside of the kerosene vaporization pot for discharging a mixed gas of vaporized kerosene and air from the kerosene vaporization pot.
  • a flow path branched from the first air flow path (second air flow path).
  • the second air flow path is composed of the branch portion 10 and the cooling air flow path 4.
  • the second air flow path causes the air branched from the first air flow path to be discharged from the kerosene vaporizer without going through the kerosene vaporization pot.
  • An orifice 5 provided in the second air flow path.
  • the channel can be formed using appropriate piping.
  • a round tube (straight tube) is combined to appropriately form a T-shaped portion to form a flow path.
  • kerosene supplied as a liquid is supplied into the kerosene vaporization pot 2 through a kerosene passage 7.
  • the kerosene vaporization pot 2 is provided with a heater 6. Inside the kerosene vaporization pot, the supplied kerosene is heated and vaporized by the heater. An electric heater can be used as the heater 6.
  • a gap is formed inside the kerosene vaporization pot, and this gap is used as a kerosene vaporization chamber.
  • Kerosene and combustion air are supplied to the kerosene vaporizing chamber, and these are mixed in the kerosene vaporizing chamber to form a mixed gas.
  • the kerosene vaporization pot 2 is provided with a thermocouple 8. By controlling the heater based on the measured temperature, the kerosene vaporization pot can be controlled to a predetermined temperature.
  • air is supplied from the supply air passage 1.
  • the supplied air is distributed at an appropriate ratio to the combustion air and the cooling air at the branching section 10.
  • the distribution at this time is distributed inside the kerosene vaporizer without using a flow rate measuring device or a flow rate control device.
  • Combustion air is air for mixing with vaporized kerosene to form a mixed gas.
  • Combustion air is supplied into the kerosene vaporization pot from the supply air passage 1 through the branching portion 10 and further through the combustion air passage 11.
  • the combustion air flow path communicates with the kerosene vaporization pot.
  • Combustion air is mixed with kerosene vaporized in the kerosene vaporization pot.
  • the mixed gas formed in this way is discharged from the kerosene vaporizer through the mixed gas flow path 3.
  • the mixed gas discharged from the kerosene vaporizer is supplied to a surface combustion burner (not shown) and burned.
  • Cooling air is air used to prevent backfire by cooling the surface combustion burner. Air is discharged from the cooling air flow path 4 from the supply air flow path 1 through the branch portion 10. The air discharged from the cooling air flow path is supplied to the surface combustion burner and used as a coolant. The cooling air after cooling the surface combustion burner can also be supplied as secondary combustion air to the flame formed by the combustion of the mixed gas.
  • the kerosene vaporizer can vaporize kerosene, and can discharge a mixed gas of vaporized kerosene and combustion air, and can also discharge cooling air.
  • the air inlet to the kerosene vaporizer for combustion air and the air inlet to the kerosene vaporizer for cooling air are the same (opening of the supply air flow path 1 in FIG. 1).
  • the kerosene vaporizer has a structure that distributes the combustion air amount and the cooling air amount at an appropriate ratio without using a control device inside the kerosene vaporizer. This structure is formed by providing an orifice in the cooling air flow path.
  • the air supplied through the supply air flow path 1 can be distributed at a constant ratio between the combustion air and the cooling air.
  • the inner diameter of the orifice is preferably 33 to 40% of the inner diameter of the portion of the cooling air flow path 4 where the orifice is provided, and at the same time, the orifice length is preferably 25 to 40% of the inner diameter of the orifice.
  • the kerosene vaporization pot has a bottomed cylindrical container with a void inside.
  • a member for forming a hole for inserting a heater in the container and for forming a hole for inserting a pipe for forming a kerosene flow path is provided, and the remaining gap is formed with the kerosene vaporization chamber 12. Is done.
  • FIG. 1B the upper side of the drawing coincides with the vertical upper side.
  • the kerosene vaporizer is used in the arrangement shown in FIG.
  • the bottom surface (lower bottom surface) of the kerosene vaporization chamber functions as the kerosene vaporization surface 13.
  • a thermocouple 8 is provided below the bottom of the kerosene vaporization chamber.
  • the mixed gas flow path is connected to the upper bottom of the container.
  • Kerosene supplied as a liquid can be dripped from the kerosene flow path 7 directly above the kerosene vaporization surface of the kerosene vaporization pot 2 and vaporized.
  • the material of the kerosene vaporization pot is a material with good thermal conductivity, such as brass.
  • Kerosene vaporizer has a heater for vaporizing kerosene inside and can vaporize kerosene stably.
  • a hole for inserting the heater 6 is provided in the kerosene vaporization pot 2, and the heater 6 can be inserted into this hole.
  • the heater supplies vaporization heat necessary for vaporizing kerosene.
  • the kerosene thus vaporized is a combustion air circulation hole provided on the side surface of the kerosene vaporization pot 2, that is, an opening 9 into the kerosene vaporization pot in the first air flow path (combustion air flow path). , Accompanying the combustion air that has flowed in more, discharged from the mixed gas flow path 3 as a mixed gas, and supplied to the surface combustion burner.
  • the kerosene passage 7 is passed through the hole 9 for the combustion air flow on the side of the kerosene vaporization pot, and the opening to the kerosene vaporization pot in the kerosene passage is the kerosene vaporization surface (bottom of the kerosene vaporization chamber) of the kerosene vaporization pot. It is preferable to arrange so that it is located immediately above.
  • the liquid kerosene supply flow rate to the kerosene vaporization pot is the kerosene supply flow rate to the vaporization pot, that is, the kerosene flow rate at the outlet end of the kerosene flow channel is 0.06 m / sec or more, 0.12 m / By setting it to sec or less, it becomes possible to generate more stable vaporized kerosene.
  • kerosene vaporizer of the present invention a gas mixture of vaporized kerosene and combustion air is supplied to a surface combustion burner using kerosene as fuel, and at the same time, air for burner cooling (and secondary combustion air). Can be supplied as well, and it is easy to suppress backfire, which is a concern in a surface combustion burner using kerosene as fuel.
  • air supply means such as an air pump that has been conventionally required for combustion air and cooling air, a flow meter for measuring the flow rate, and an air pump based on the measured value by the flow meter It is possible to combine the control devices for controlling the outputs. As a result, the apparatus can be simplified and the cost can be reduced.
  • This distribution can be performed by an orifice provided in the cooling air flow path, and an appropriate air flow distribution is excellently realized by setting the dimensions within the specific range described above.
  • kerosene vaporization pot made of a material having good thermal conductivity, for example, brass.
  • the supply of vaporization heat necessary for kerosene can be realized by making a hole in the vaporization pot and inserting a heater there. About the output of a heater, it can control using the thermocouple inserted in the lower part of the vaporization pot.
  • the kerosene thus vaporized can be accompanied by the combustion air flowing in from the hole opened on the side surface of the vaporization pot and discharged from the kerosene vaporizer as a mixed gas.
  • the discharged mixed gas is supplied to the surface combustion burner.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)

Abstract

L'invention concerne un carburateur à kérosène qui ne nécessite pas l'utilisation d'une pompe à air, d'un débitmètre et d'un contrôleur ni pour l'air de combustion, ni pour l'air de refroidissement envoyés dans un brûleur à combustion de surface. Le carburateur à kérosène de l'invention, qui envoie le mélange de kérosène vaporisé et l'air à un brûleur à combustion d'un dispositif chauffant et vaporisant intérieurement le kérosène, un canal de kérosène, c'est-à-dire un canal communiquant avec l'intérieur du vaporisateur de kérosène et par lequel le kérosène est introduit dans le vaporisateur, un premier canal d'air, c'est-à-dire un canal communiquant avec l'intérieur du vaporisateur de kérosène et par lequel l'air est introduit dans le vaporisateur, un canal de mélange, c'est-à-dire un canal communiquant avec l'intérieur du vaporisateur de kérosène et par lequel le mélange de kérosène vaporisé et l'air est évacué par le vaporisateur, un deuxième canal d'air, c'est-à-dire un canal ramifié à partir du premier canal d'air, et un orifice formé dans le deuxième canal d'air.
PCT/JP2010/054548 2009-03-27 2010-03-17 Carburateur à kérosène WO2010110147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-079048 2009-03-27
JP2009079048A JP2010230248A (ja) 2009-03-27 2009-03-27 灯油気化器

Publications (1)

Publication Number Publication Date
WO2010110147A1 true WO2010110147A1 (fr) 2010-09-30

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JP (1) JP2010230248A (fr)
WO (1) WO2010110147A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06137518A (ja) * 1992-10-27 1994-05-17 Noritz Corp 液体燃料燃焼装置
JP2002098310A (ja) * 2000-09-26 2002-04-05 Nippon Mitsubishi Oil Corp 液体燃料用バーナマット
JP2003083535A (ja) * 2001-09-07 2003-03-19 Mitsubishi Electric Corp 燃焼装置
JP2006105480A (ja) * 2004-10-05 2006-04-20 Nippon Oil Corp バーナおよび燃料電池システム
JP2007046815A (ja) * 2005-08-08 2007-02-22 North Techno Research Kk 予混合燃焼装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6170312A (ja) * 1984-09-12 1986-04-11 Matsushita Electric Ind Co Ltd 液体燃料気化装置
JPH0517317U (ja) * 1991-07-30 1993-03-05 京セラ株式会社 液体気化装置
JPH08135927A (ja) * 1994-11-07 1996-05-31 Sanyo Electric Co Ltd 液体燃料燃焼装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06137518A (ja) * 1992-10-27 1994-05-17 Noritz Corp 液体燃料燃焼装置
JP2002098310A (ja) * 2000-09-26 2002-04-05 Nippon Mitsubishi Oil Corp 液体燃料用バーナマット
JP2003083535A (ja) * 2001-09-07 2003-03-19 Mitsubishi Electric Corp 燃焼装置
JP2006105480A (ja) * 2004-10-05 2006-04-20 Nippon Oil Corp バーナおよび燃料電池システム
JP2007046815A (ja) * 2005-08-08 2007-02-22 North Techno Research Kk 予混合燃焼装置

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