US20050142509A1 - Burner assembly for gas burners of radiant heating type - Google Patents

Burner assembly for gas burners of radiant heating type Download PDF

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Publication number
US20050142509A1
US20050142509A1 US10499807 US49980705A US2005142509A1 US 20050142509 A1 US20050142509 A1 US 20050142509A1 US 10499807 US10499807 US 10499807 US 49980705 A US49980705 A US 49980705A US 2005142509 A1 US2005142509 A1 US 2005142509A1
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Prior art keywords
burner
mixed gas
chamber
burner chamber
part
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Abandoned
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US10499807
Inventor
Young Kim
Dae Jung
Dae Lee
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LG Electronics Inc
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LG Electronics Inc
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24COTHER DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00Stoves and ranges for gaseous fuels
    • F24C3/04Stoves and ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate
    • F24C3/06Stoves and ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate without any visible flame
    • F24C3/067Ranges

Abstract

Burner assembly for a gas burner of radiant heating type including a burner chamber for receiving mixed gas, a burner mat on top of the burner chamber for making combustion, and a baffle part between a bottom of the burner mat and a side of the burner chamber the mixed gas is introduced into the burner chamber therethrough, for uniform distribution of the mixed gas to an entire part of the burner mat.

Description

    TECHNICAL FIELD
  • The present invention relates to gas burners of radiant heating type, and more particularly, to a burner assembly for a gas burner of radiant heating type, in which mixed gas flows to an entire part of a burner mat, uniformly.
  • BACKGROUND ART
  • The present invention relates to gas burners of radiant heating type, and more particularly, to a burner assembly therefore. In general, the gas burner of radiant heating type is a range in which a heating object is heated with a radiant wave emitted from a radiant body when the radiant body is heated by burning a mixed gas of a fuel and air, to cook food.
  • FIG. 1 illustrates a related art gas burner of radiant heating type, schematically. That is, the related art gas burner of radiant heating type is provided with an oven part 10, and a top burner part 20.
  • The top burner part 20 is provided with a burner assembly shown in FIG. 2. The related art burner assembly will be described with reference to FIG. 2.
  • The related art burner assembly is provided with a burner housing 21, a glass plate 22, a mixing tube 23, a burner chamber 24, and a burner mat 25. The burner housing 21 shapes an outside of the burner assembly, and forms a combustion space. The glass plate 22 is placed on top of the burner housing 21 to close an upper part of the burner assembly.
  • The mixing tube 23 is a tube in which fuel and air are introduced therein and mixed together, and is in communication with the burner chamber 24. The burner chamber 24 has a closed circumference and an opened top, for receiving the mixed gas from the mixing tube 23, and storing the mixed gas therein. The opened top of the burner chamber 24 is in communication with an inside space of the burner housing 21.
  • The burner mat 25 is placed on the burner chamber 24, for burning the mixed gas from the burner chamber 24. The burner mat 25 makes surface combustion of the mixed gas, and serves as a radiant body for emitting a radiant wave.
  • The operation of the burner assembly will be described.
  • When a user ignites in a state a heating object is placed on the glass plate 22, the fuel and air are introduced into the mixing tube 23, and mixed therein during the fuel and air pass through the mixing tube 23.
  • Then, the mixed gas is introduced into the burner chamber 24 in communication with the mixing tube 23, passes through the burner mat 25, and blows out into the inside of the combustion space of the burner housing 21. At the same time with this, the mixed gas is ignited with an igniting spark generated by an igniting means (not shown).
  • The mixed gas burns on a surface of the burner mat 25, and the burner mat 25 emits a radiant wave as the burner mat 25 is heated by the combustion. Then, the radiant wave transmits the glass plate 22, and heats the heating object, to cook food.
  • However, the related art burner assembly has a problem in that, a major portion of the mixed gas supplied to an inside of the burner chamber 24 through the mixing tube 23 flows toward a central part of the burner mat 25, uniform surface combustion throughout an entire part of the burner mat 25 has failed.
  • Particularly, in a case the burner assembly has a large size, for an example, if, not a small kettle, but a large cooking container with a large surface area is heated, heating of an outer part of the large cooking container has failed.
  • Moreover, in a case the gas supply is reduced for low temperature heating, to cause an extreme shortage of the mixed gas supplied to the burner chamber 24 compared to an area of the burner mat 25, the combustion takes place only in a central part of the burner mat 25 the mixed gas supply thereto is smooth, but not in an outer part of the burner mat 25.
  • DISCLOSURE OF INVENTION
  • An object of the present invention designed to solve the foregoing problems lies on providing a burner assembly which enables uniform distribution of mixed gas, which is passed through a mixing tube and supplied to an inside of the burner chamber, throughout an entire part of the burner mat.
  • The object of the present invention can be achieved by providing a burner assembly for a gas burner of radiant heating type including a burner chamber for receiving mixed gas, a burner mat on top of the burner chamber for making combustion, and a baffle part between a bottom of the burner mat and a side of the burner chamber the mixed gas is introduced into the burner chamber therethrough, for uniform distribution of the mixed gas to an entire part of the burner mat.
  • The baffle part includes a mesh form of a baffle plate in the burner chamber, and the baffle part further includes a supporting part for holding the baffle plate inside of the burner chamber.
  • In other aspect of the present invention, there is provided a burner assembly for a gas burner of radiant heating type including a burner chamber for receiving mixed gas, a burner mat on top of the burner chamber for making combustion, a baffle part of a substantially cylindrical form between a bottom of the burner mat and a side of the burner chamber the mixed gas is introduced into the burner chamber therethrough, having a bottom in communication with a side of an inside of the burner chamber the mixed gas is introduced to the burner chamber therethrough, and a circumference with a plurality of vanes for guiding the mixed gas toward the circumference of an inside of the burner chamber.
  • In another aspect of the present invention, there is provided a burner assembly for a gas burner of radiant heating type including a burner chamber for receiving mixed gas, a burner mat on top of the burner chamber for making combustion, an impeller at an opening the mixed gas is introduced into the burner chamber therethrough, for guiding the mixed gas toward a circumference of an inside of the burner chamber.
  • BRIEF DESCRIPTION OF DRAWINGS
  • The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention.
  • In the drawings;
  • FIG. 1 illustrates a perspective view of an outside appearance of a related art gas burner of radiant heating type;
  • FIG. 2 illustrates a section showing key parts of a related art burner assembly for a gas burner of radiant heating type, schematically;
  • FIG. 3 illustrates a section of a burner assembly for a gas burner of radiant heating type in accordance with a first preferred embodiment of the present invention, schematically;
  • FIGS. 4 to 7 illustrate sections each showing an example of variation of the burner assembly in accordance with a first preferred embodiment of the present invention;
  • FIG. 8 illustrates a section of a burner assembly for a gas burner of radiant heating type in accordance with a second preferred embodiment of the present invention, schematically;
  • FIGS. 9A and 9B illustrate plan views each showing a flow guide in a burner assembly for a gas burner of radiant heating type in accordance with a second preferred embodiment of the present invention, schematically;
  • FIG. 10 illustrates a section of an example of a variation of a burner assembly for a gas burner of radiant heating type in accordance with a second preferred embodiment of the present invention;
  • FIG. 11 illustrates a section of a burner assembly for a gas burner of radiant heating type in accordance with a third preferred embodiment of the present invention, schematically;
  • FIG. 12 illustrates a section of a burner assembly for a gas burner of radiant heating type in accordance with a fourth preferred embodiment of the present invention, schematically; and
  • FIG. 13 illustrates a section of an example of a variation of a burner assembly for a gas burner of radiant heating type in accordance with a fourth preferred embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION
  • Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
  • The burner assembly in accordance with a first preferred embodiment of the present invention includes a burner chamber 140, a burner mat 150, and a baffle part. The burner chamber 140 is mounted on an underside of the burner housing 110 for receiving a mixed gas mixed at the mixing tube 130. The burner chamber 140 has an opened top. The burner chamber 140 may have a shape the same with the related art as shown in the drawing, or modified similar thereto. The burner mat 150 is placed on top of the burner chamber 140, for making surface combustion of the mixed gas supplied into the burner chamber 140.
  • The baffle part distributes the mixed gas to all part of the burner mat 150 uniformly. The baffle part includes a mesh form of baffle plate 161 in the burner chamber 140. That is, the mesh form of the baffle plate 161 distributes the mixed gas, flowing from the mixing tube 130 toward the burner mat 150, to an entire part of the burner mat 150, uniformly.
  • The baffle plate 161 divides the burner chamber 140 into an upper space and a lower space. That is, the baffle plate 161 divides the burner chamber 140 into the lower space in communication with the mixing tube 130 and the upper space having the burner mat 150 therein.
  • Referring to FIG. 3, an edge of the baffle plate 161 may be placed on a step formed in an inside wall of the burner chamber 140, which is liable to fall down by an external impact or ceaseless flow of the mixed gas.
  • Referring to FIG. 4, to cope with this, the embodiment of the present invention preferably provides separate supporting part 162 for supporting the baffle plate 161. In this instance, the supporting part 162 has a bottom part fixed to a bottom of an inside of the burner chamber 140, and a top part to support a lower surface of the baffle plate 161.
  • Especially, in this case, it is preferable that the baffle plate 161 is space from an inside wall of the burner chamber 140. This is because a case combustion is made smoother at an outer part of the burner mat 150 than a central part has a better uniform heating efficiency than a case combustion is made smoother at a central part of the burner mat 150 than an outer part.
  • That is, transmission of radiant heat from the outer part to a central part of the burner mat 150 has a better combustion efficiency than transmission of radiant heat from central part of the burner mat 150 to the outer side. Moreover, the more combustion at the outer part of the burner mat 150, the more favorable for heating a large cooking container with relatively large surface area.
  • Of course, as shown in FIG. 5, a flow cutoff part 161 a may be further provided in a central part of the baffle plate 161 for cutting off an upward flow of the mixed gas, so that, as described before, more mixed gas flows toward the outer part of the burner mat 150. Moreover, as shown in FIG. 6, the mesh form of baffle plate 161 may be formed to have openings formed the greater as it goes further to an outer side from the central part.
  • As illustrated with different examples, though the first embodiment of the present invention is applicable to a case the mixing tube 130 is in communication with a bottom of the burner chamber 140, the first embodiment of the present invention is also applicable to a case the mixing tube 130 is in communication with a circumferential surface of the burner chamber 140.
  • A burning process of the mixed gas in the burner assembly having the first embodiment of the present invention applied thereto will be described.
  • When the user ignites, gas and air are introduced into the mixing tube 130, and mixed during the gas and air pass through the mixing tube 130. Then, the mixed gas is introduced into the burner chamber 140 in communication with the mixing tube 130, and blows out into a combusting space in the burner housing 110 through the burner mat 150. At this time, the mixed gas is ignited with an igniting spark generated by igniting means (not shown).
  • In this instance, the mixed gas introduced into the burner chamber 140 from the mixing tube 130 is distributed to entire part of the burner mat 150 by the baffle plate 161 in the burner chamber 140. This is because the mesh form of the baffle plate 161 prevent the mixed gas from concentrating a part of the burner mat 150 during the mixed gas passes through the baffle plate 161.
  • According to this, smooth surface combustion is made at the burner mat 150, and a radiant wave from the combustion transmits the glass plate 120, and heats a heating object, to heat entire part, particularly, the outer part of the cooking container uniformly, even if the cooling container is comparatively large.
  • FIG. 8 illustrates a section of a burner assembly for a gas burner of radiant heating type in accordance with a second preferred embodiment of the present invention, schematically.
  • The burner assembly in accordance with a second preferred embodiment of the present invention includes a baffle part for distributing mixed gas to entire part of the burner mat uniformly, having a baffle cylinder 163 in communication with the mixing tube 130. Of course, the baffle cylinder 163 may not be cylindrical, but polygonal. The baffle cylinder 163 is provided between a bottom of the burner mat 150 and a side of the burner chamber 140 the mixed gas is introduced thereto, with an opened circumference.
  • The baffle cylinder 163 has a diameter larger than an opening the mixed gas is introduced therethrough, and a bottom surface fixed to a bottom surface of the burner chamber 140 around the opening the mixed gas is introduced therethrough. The circumference of the baffle part 163 may not be opened fully, but of a mesh form for uniform discharge of the mixed gas.
  • However, the embodiment of the present invention suggests a plurality of vanes 164 in the opened circumference of the baffle cylinder 163 for smooth flow of the mixed gas to the outer part of an inside of the burner chamber 140.
  • Referring to FIG. 9A, for providing a circulating force to a mixed gas flow passing through the circumference of the baffle cylinder 163, the vanes 164 are slanted in a clockwise or counter clockwise direction when a section thereof is seen from above.
  • Of course, referring to FIG. 9B, for providing a circulating force to a mixed gas flow passing through the circumference of the baffle cylinder 163, the vanes 164 may be curved substantially in a clockwise or counter clockwise direction when a section thereof is seen from above.
  • The baffle cylinder 163 may have a top part fully closed, or of a mesh form.
  • A burning process of the mixed gas in the burner assembly having the second embodiment of the present invention applied thereto is the same with the first embodiment, wherein the concentration of the mixed gas to the central part of the burner mat 150 is prevented by the baffle cylinder 163.
  • Moreover, the burner assembly in accordance with the second preferred embodiment of the present invention is also applicable to a structure in which the mixing tube 130 is in communication with a circumference of the burner chamber 140. For an example, as shown in FIG. 10, the baffle cylinder 163 is formed to surround a part of an inside of the burner chamber 140 where the communication with the mixing tube 130 is made. In this instance, the baffle cylinder 163 may be of a mesh form, or a perforated, on the whole.
  • FIG. 11 illustrates a section of a burner assembly for a gas burner of radiant heating type in accordance with a third preferred embodiment of the present invention.
  • The burner assembly for a gas burner of radiant heating type in accordance with a third preferred embodiment of the present invention includes a baffle part for uniform distribution of mixed gas to entire part of a burner mat 150, having a cutoff plate 165 for cutting of flow of the mixed gas.
  • The cutoff plate is positioned in an inside space of the burner chamber 140 close to the opening of the mixing tube 130 the mixed gas is introduced therethrough, for cutting off upward flow of the mixed gas.
  • The burner assembly further includes a supporting part 166 for supporting the cutoff plate 165. The supporting part 166 is formed such that the cutoff plate is held in position in the inside space of the burner chamber 140.
  • The burner assembly for a gas burner of radiant heating type in accordance with a third preferred embodiment of the present invention has a function substantially same with the burner assembly for a gas burner of radiant heating type in accordance with a second preferred embodiment of the present invention, and provides a similar combustion performance.
  • FIG. 12 illustrates a section of a burner assembly for a gas burner of radiant heating type in accordance with a fourth preferred embodiment of the present invention.
  • The burner assembly for a gas burner of radiant heating type in accordance with a third preferred embodiment of the present invention includes a baffle part for uniform distribution of mixed gas to entire part of a burner mat 150, having an impeller 167 at an opening the mixed gas is introduced into the burner chamber 140 therethrough.
  • The impeller 167 may be helical substantially, or slanted in a clockwise or counter clockwise direction, for providing a circulating force to a mixed gas flow passing through the impeller 167. Particularly, as shown in FIG. 13, though the impeller 167 may be on a bottom surface of an inside of the burner chamber 140 alike the foregoing embodiment, the impeller 167 may be in the mixing tube 130.
  • It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
  • Industrial Applicability
  • The burner assembly of the present invention permits uniform combustion at the burner mat by making the mixed gas supply to the entire part of the burner mat, uniform.
  • The burner assembly of the present invention permits combustion at an outer side of the burner mat that enables uniform heating of entire part of a cooking container, even if the cooking container is large.

Claims (16)

  1. 1. A burner assembly for a gas burner of radiant heating type comprising:
    a burner chamber for receiving mixed gas;
    a burner mat on top of the burner chamber for making combustion; and
    a baffle part between a bottom of the burner mat and a side of the burner chamber the mixed gas is introduced into the burner chamber therethrough, for uniform distribution of the mixed gas to an entire part of the burner mat.
  2. 2. The burner assembly as claimed in claim 1, wherein the baffle part includes a mesh form of a baffle plate in the burner chamber.
  3. 3. The burner assembly as claimed in claim 2, wherein the baffle plate has a circumference spaced from an inside wall of the burner chamber.
  4. 4. The burner assembly as claimed in claim 2, wherein the baffle part further includes a supporting part for holding the baffle plate inside of the burner chamber.
  5. 5. The burner assembly as claimed in claim 2, wherein the baffle plate includes a flow cutoff part at a central part for cutting off upward flow of the mixed gas.
  6. 6. The burner assembly as claimed in claim 2, wherein the baffle plate has openings formed the greater as it goes further to an outer side from the central part.
  7. 7. The burner assembly as claimed in claim 1, wherein the baffle plate is substantially cylindrical, and has a lower part in communication with a side of the burner chamber the mixed gas is introduced thereto, and an opened circumference.
  8. 8. The burner assembly as claimed in claim 7, wherein the circumference of the baffle part includes a plurality of vanes for guiding the mixed gas from the opening toward a circumference of an inside of the burner chamber.
  9. 9. The burner assembly as claimed in claim 8, wherein the vanes are slanted in a clockwise or counter clockwise direction when a section thereof is seen from above, for providing a circulating force to the mixed gas flow.
  10. 10. The burner assembly as claimed in claim 8, wherein the vanes are curved in a clockwise or counter clockwise direction when a section thereof is seen from above, for providing a circulating force to the mixed gas flow.
  11. 11. The burner assembly as claimed in claim 7, wherein the baffle part has a top surface of a mesh form.
  12. 12. The burner assembly as claimed in claim 1, wherein the baffle plate includes a cutoff plate positioned close to a side of the burner chamber the mixed gas is introduced thereto, for cutting off a mixed gas flow.
  13. 13. The burner assembly as claimed in claim 1, wherein the baffle part includes an impeller at an opening the mixed gas is introduced into the burner chamber therethrough, for guiding the mixed gas to a circumference side of an inside of the burner chamber.
  14. 14. A burner assembly for a gas burner of radiant heating type comprising:
    a burner chamber for receiving mixed gas;
    a burner mat on top of the burner chamber for making combustion;
    a baffle part of a mesh form between a bottom of the burner mat and a side of the burner chamber the mixed gas is introduced into the burner chamber therethrough; and
    a supporting part for supporting the baffle plate to be held in the burner chamber.
  15. 15. A burner assembly for a gas burner of radiant heating type comprising:
    a burner chamber for receiving mixed gas;
    a burner mat on top of the burner chamber for making combustion;
    a baffle part of a substantially cylindrical form between a bottom of the burner mat and a side of the burner chamber the mixed gas is introduced into the burner chamber therethrough, having a bottom in communication with a side of an inside of the burner chamber the mixed gas is introduced to the burner chamber therethrough, and a circumference with a plurality of vanes for guiding the mixed gas toward the circumference of an inside of the burner chamber.
  16. 16. A burner assembly for a gas burner of radiant heating type comprising:
    a burner chamber for receiving mixed gas;
    a burner mat on top of the burner chamber for making combustion;
    an impeller at an opening the mixed gas is introduced into the burner chamber therethrough, for guiding the mixed gas toward a circumference of an inside of the burner chamber.
US10499807 2003-12-29 2003-12-29 Burner assembly for gas burners of radiant heating type Abandoned US20050142509A1 (en)

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