EP0064559B1 - Flüssigkeitsbrenner mit docht - Google Patents

Flüssigkeitsbrenner mit docht Download PDF

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Publication number
EP0064559B1
EP0064559B1 EP81903069A EP81903069A EP0064559B1 EP 0064559 B1 EP0064559 B1 EP 0064559B1 EP 81903069 A EP81903069 A EP 81903069A EP 81903069 A EP81903069 A EP 81903069A EP 0064559 B1 EP0064559 B1 EP 0064559B1
Authority
EP
European Patent Office
Prior art keywords
wick
combustion
liquid fuel
cylindrical body
flame
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.)
Expired
Application number
EP81903069A
Other languages
English (en)
French (fr)
Other versions
EP0064559A1 (de
EP0064559A4 (de
Inventor
Akihiko Hashimoto
Hideharu Shimizu
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0064559A1 publication Critical patent/EP0064559A1/de
Publication of EP0064559A4 publication Critical patent/EP0064559A4/de
Application granted granted Critical
Publication of EP0064559B1 publication Critical patent/EP0064559B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D3/00—Burners using capillary action
    • F23D3/02—Wick burners
    • F23D3/18—Details of wick burners
    • F23D3/22—Devices for mixing evaporated fuel with air

Definitions

  • This invention relates to a liquid fuel burner adapted to make variable the rate of gasification of a liquid fuel, such as kerosene, sucked up by a wick, thereby facilitating the adjustment of the rate of combustion of fuel.
  • a liquid fuel such as kerosene
  • the wick type liquid fuel burner of conventional kerosene stove or the like is so arranged that the top of the wick is projected between inner and outer flame cylinders so that changing the projection height of the wick makes variable the rate of gasification of fuel from the wick, thereby adjusting the rate of combustion of fuel.
  • an excessive decrease in the projection height of the wick accelerates the deposition of tar on the wick or increases the CO content of exhaust gases, so that actually it has been impossible to substantially adjust the combustion rate.
  • the recent worsening of the condition of oil supply has come up with kerosene containing heavier fractions, which means that the kerosene now available has a wide range of boiling point and contains large amounts of high-boiling substances.
  • the wick temperature can hardly be elevated during the dry burning because of the amount of air supply being limited by the decreased diameters of air holes formed in the inner and outer flame cylinders adjacent to the wick to reduce the amount of CO emission and odor while stable combustion is obtained from ignition. As a result, there has been a drawback that even if the dry burning is performed, the deposited tar cannot be eliminated.
  • the petroleum burner disclosed in Japanese Patent Publication No. 22584/1969 comprises upper inner and outer flame cylinders and lower inner and outer flame cylinders which define a combustion chamber, the arrangement being such that the size of said combustion chamber can be changed by vertically moving said upper inner and outer flame cylinders. Therefore, the area of the air inlet port in the region between the lower inner and outer flame cylinders does not change.
  • the petroleum burner discloses in Japanese Utility Model Publication No. 31696/1972 includes a base body composed of base and inner and outer flame cylinders, and various burners with heating portions having different surface areas are provided for said base body, whereby the device can be used for any room heating. Therefore, in the lower portion of the base body where the wick projects, no change in the inlet air flow rate takes place.
  • the petroleum burner disclosed in Japanese Utility Model Application Disclosure No. 132637/ 1976 comprises wick guiding inner and outer cylinders for guiding a vertically movable wick, and an upper cylinder having small holes and installed at the upper end of the wick guiding inner cylinder, the arrangement being such that when said wick is vertically moved to sink in an upper space defined by the wick guiding inner and outer cylinders and the fire is thereby put out, cold air is introduced into the upper space through the small holes in the upper cylinder; thus, evaporation of petroleum is suppressed and the fire is rapidly put out. The amount of air for combustion in the vicinity of the wick is not altered.
  • the petroleum oil burner disclosed in Japanese Utility Model Application Disclosure No. 69037/ 1977 comprises outer and inner wick cylinders guiding a wick, inner and outer flame cylinders constituting a combustion chamber and installed on the upper ends of said inner and outer wick guiding cylinders, and carolic force adjusting inner and outer cylinders surrounding said inner and outer flame cylinders. And the carolic force adjusting inner and outer cylinders are rotated in the order mentioned to change the area of each air hole, thereby adjusting the combustion rate.
  • the present invention provides a liquid fuel burner comprising inner and outer flame cylinders which define a combustion chamber therebetween, said inner and outer flame cylinders having a plurality of air holes therein for feeding air for combustion into the combustion chamber, an upwardly projecting wick being installed in said combustion chamber for drawing up liquid fuel, wherein the liquid fuel is evaporated from the top of the wick by the heat of combustion in the combustion chamber, whereby the liquid fuel is mixed with the air for combustion and burned, characterised in that there is provided a removable cylindrical body having a plurality of air holes therein for feeding air for combustion into the combustion chamber, said cylindrical body arranged to be removably installed at the lower end of at least either said inner flame cylinder or said outer flame cylinder so as to surround the upper portion of said wick whereby the rate of the combustion in the combustion chamber can be adjusted either by replacing said cylindrical body with another cylindrical body having a different set of air holes or by removing said cylindrical body and using only inner and outer flame cylinders.
  • an outer wick cylinder 3 is installed through a packing 2 above a top opening in a fixed tank 1 which stores kerosene used as an example of liquid fuel.
  • a wick guide cylinder 4 which vertically movably carries on its periphery a cylindrical wick 5.
  • the wick 5 serves to suck up kerosene in the fixed tank 1 and gasify it.
  • the upper portions of the outer wick cylinder 3 and wick guide cylinder 4 terminate in fire tray portions 6 and 7, respectively, on which is mounted a combustion cylinder assembly 14 comprising an outer flame cylinder 8, an inner flame cylinder 9, an outer cylinder 10, a substantially hemisphere-like a coil 12 and a partition plate 13 in the form of a disk.
  • the outer flame cylinder 8 and inner flame cylinder 9 are each formed with a number of air holes 15. The air which flows in through the air holes 15 and gasified kerosene from the top of the wick 5 are mixed together, and the mixture is burned in a combustion chamber 16 defined between the outer and inner flame cylinders 8 and 9.
  • the inner and outer flame cylinders 9 and 8 of said combustion cylinder assembly 14 have inner and outer flame cylindrical bodies 17 and 18, respectively, removably fitted to their lower ends, as shown in Fig. 2.
  • the inner flame cylindrical body 17, as shown in Fig. 3 is formed with a number of air holes 19.
  • the total area of these air holes 19 is larger than that of the air holes 15 in the lower portion of the inner flame cylinder 9 having the same height as the height A of the inner flame cylindrical body 17.
  • the outer flame cylindrical body 18 is also formed with a number of air holes 20, as shown in Fig. 4.
  • the total area of these air holes 20 is larger than that of the air holes 15 formed in the lower portion of the outer flame cylinder 8 having the same height as the height A of the outer flame cylindrical body 18.
  • the inner and outer flame cylindrical body 17 and 18 have the lower ends of the inner and outer flame cylinders 9 and 8 force-fitted thereto, but such connections may be of thread or bayonet type. In any case, it is preferable that there be no protrusion in the interior of the combustion chamber 16, in order to prevent disturbance of combustion and degradation of material.
  • this liquid fuel burner is used with the inner and outer flame cylindrical bodies 17 and 18 removed, as shown in Fig. 1 or with these inner and outer flame cylindrical bodies 17 and 18 mounted, as shown in Fig. 2.
  • the overall height of the combustion cylinder assembly 14 changes and so does the draft in the combustion chamber 16; accordingly, the combustion rate increases or decreases. That is, it is possible to adjust the combustion rate.
  • the flow rate of air in the vicinity of the wick 5 can be changed by mounting or dismounting the outer and inner flame cylindrical bodies 18 and 17, various kinds of kerosene can be burned more completely.
  • the inner and outer flame cylindrical bodies 17 and 18 having air holes 19 and 20 of large total opening area are used as in this embodiment, mounting them increase the amount of inflow of air adjacent to the wick 5, accelerates combustion adjacent to the wick 5, elevates the temperature of the wick 5, and makes it easier to eliminate the tar deposited on the wick 5. As a result, even if the deposition of tar has made it impossible to use the wick any further as in the past, it can be revived by performing the dry burning with a supply of kerosene cut off.
  • the inner and outer flame cylindrical bodies 17 and 18 are inexpensive, the merit will double. Therefore, the inner and outer flame cylindrical bodies 17 and 18 should be as inexpensive as possible, and their height should be as small as possible. However, they should be tall enough to rise above the top of the wick 5 in its projected position so as not to substantially influence combustion. That is, if the inner and outer flame cylindrical bodies 17 and 18 are tall enough to rise above the top of the wick 5 in its projected position, there will be a merit that even if a clearance is created in the junction between the inner and outer flame cylindrical bodies 17 and 18 and the inner and outer flame cylinders 9 and 8 of the combustion cylinder assembly 14, this will not substantially influence combustion.
  • Fig. 5 shows another embodiment of the invention, wherein the inner and outer flame cylinders 9 and 8 are divided into upper and lower portions, the lower portions serving as the inner and outer flame cylindrical bodies 17 and 18, respectively.
  • Figs. 6 and 7 show other embodiments of the invention, wherein only the outer flame cylinder 8 or the inner flame cylinder 9 is divided into upper and lower portions.
  • the intended merit can be obtained by changing the lower air hole area in only one of the inner and outer flame cylinders 9 and 8.
  • the draft in the combustion chamber can be changed by mounting and dismounting the inner and outer flame cylindrical bodies, it is possible to adjust the rate of combustion by changing the rate of gasification of fuel without having to change the projection height of the wick.
  • the mounting and dismounting of the inner and outer flame cylindrical bodies changes the flow rate of air adjacent to the wick, so that at least two kinds of liquid fuels can be burned completely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)

Claims (3)

1. Ein Flüssigkeitsbrenner mit einem inneren (9) und einem äußeren (8) Flammzylinder, die zwischen sich eine Brennkammer (16) einschließen, wobei der innere (9) und der äußere (8) Flammzylinder eine Mehrzahl von Luftlöchern (15) darin aufweisen, um Luft für die Verbrennung in die Brennkammer (16) zuzuführen, einem nach oben vorstehenden Docht (5), der in der Brennkammer (16) angeordnet ist, um flüssigen Brennstoff nach oben zu ziehen, wobei der flüssige Brennstoff von der Oberseite des Dochtes (5) durch die Verbrennungswärme in der Brennkammer (16) verdampft wird, wodurch der flüssige Brennstoff mit Luft für die Verbrennung vermischt und verdampft wird, dadurch gekennzeichnet, daß ein lösbarer zylindrischer Körper (17 oder 18) mit einer Vielzahl von Luftlöchern (19 oder 20) darin zur Zuführung von Luft für die Verbrennung in die Brennkammer (16) vorgesehen ist, der so angeordnet ist, daß er lösbar am unteren Ende von wenigstens entweder dem inneren Flammzylinder (8) oder dem äußeren Flammzylinder (9) angebracht ist, um den oberen Teil des Dochtes (5) zu umgeben, wodurch die Verbrennungsrate in der Brennkammer (16) entweder durch Ersatz des zylindrischen Körpers (17 oder 18) durch einen anderen zylindrischen Körper mit unterschiedlichem Luftlochsatz oder durch Entfernen des zylindrischen Körpers (17 oder 18) und Verwendung nur des inneren und des äußeren Flammzylinders (8 und 9) eingestellt werden kann.
2. Ein Flüssigkeitsbrenner nach Anspruch 1, bei dem der Gesamtquerschnitt der Luftlöcher (19 oder 20) in dem zylindrischen Körper (17 oder 18) größer als der der Luftlöcher (15) in dem unteren Teil des inneren (9) oder des äußeren (8) Flammzylinders ist, die dieselbe Höhe wie jene des zylindrischen Körpers (17 oder 18) haben.
3. Ein Flüssigkeitsbrenner nach Anspruch 1, bei dem die Höhe des zylindrischen Körpers (17 oder 18) größer ist, als die vorstehende Höhe des Dochtes (5).
EP81903069A 1980-11-18 1981-11-17 Flüssigkeitsbrenner mit docht Expired EP0064559B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP163073/80 1980-11-18
JP55163073A JPS5784907A (en) 1980-11-18 1980-11-18 Combustor

Publications (3)

Publication Number Publication Date
EP0064559A1 EP0064559A1 (de) 1982-11-17
EP0064559A4 EP0064559A4 (de) 1983-04-18
EP0064559B1 true EP0064559B1 (de) 1985-07-31

Family

ID=15766662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81903069A Expired EP0064559B1 (de) 1980-11-18 1981-11-17 Flüssigkeitsbrenner mit docht

Country Status (3)

Country Link
EP (1) EP0064559B1 (de)
JP (1) JPS5784907A (de)
WO (1) WO1982001763A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779509B1 (fr) * 1998-06-04 2000-07-07 Prod Berger Bruleur a combustion catalytique en matiere poreuse et flacon equipe d'un tel bruleur
FR2856775B1 (fr) 2003-06-27 2005-08-19 Prod Berger Bruleur a combustion catalytique en matiere poreuse et flacon equipe d'un tel bruleur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4422584B1 (de) * 1966-10-25 1969-09-26
JPS4731696Y1 (de) * 1968-12-25 1972-09-25
JPS5269037U (de) * 1975-11-18 1977-05-23

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51132637U (de) * 1975-04-17 1976-10-25

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4422584B1 (de) * 1966-10-25 1969-09-26
JPS4731696Y1 (de) * 1968-12-25 1972-09-25
JPS5269037U (de) * 1975-11-18 1977-05-23

Also Published As

Publication number Publication date
JPS5784907A (en) 1982-05-27
WO1982001763A1 (fr) 1982-05-27
EP0064559A1 (de) 1982-11-17
EP0064559A4 (de) 1983-04-18

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