Top-burner and cooker comprising the same

• US 8,932,049 B2
• Filed: 12/15/2008
• Issued: 01/13/2015
• Est. Priority Date: 12/14/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yang, Dae-Bong, Jeong, Yong-Ki, Kim, Young-Soo, Kim, Yang-Ho, Wie, Jae-Hyuk, Ryu, Jung-Wan, Lee, Dae-Rae, Lim, Jae-Bum
• Primary Examiner(s): PEREIRO, JORGE ANDRES
• Application Number:
  US12/808,132
• Publication Number:
  US 20110011389A1
• Time in Patent Office: 2,220 Days
• Field of Search: 126/39.E, 126/39.H, 126/39.R, 431/278, 431/284, 431/350, 431/354
• US Class Current: 431/284
• CPC Class Codes: F23D 14/06 with radial outlets at the burner head
• CPC Class Codes: F23D 2900/14062 for cooking ranges having multiple flame rings
• CPC Class Codes: F23D 2900/14063 for cooking ranges having one flame ring fed by multiple venturis
• CPC Class Codes: F24C 3/085 on ranges
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The present invention relates to a top burner and a cooker including the top burner. The present invention includes: an outer burner installed on a top surface of a top plate, and provided with a plurality of flame holes to form flames through combusting gas mixture at a perimeter thereof; an inner burner installed on a top surface of the outer burner, and provided with a plurality of flame holes to form flames through combusting gas mixture at a perimeter thereof disposed inward to the perimeter of the outer burner; a plurality of first mixing tubes supplying gas mixture mixed with air inside the outer burner; a second mixing tube supplying gas mixture mixed with air inside the inner burner; and a passage formed through the outer tube, and in which air supplied to combust gas mixture at the flame holes of the inner burner flows. Thus, according to the present invention, the advantages of heating food more efficiently while reducing incomplete combustion of gas mixture can be realized.

Claims

1. A top burner comprising:

a first burner provided with a plurality of flame holes for forming flames through combusting gas mixture;

a second burner installed on a top surface of the first burner, and provided with a plurality of flame holes for forming flames through combusting of gas mixture for the flames formed at the flame holes of the first burner;

a first mixing tube for supplying gas mixture into the first burner, extended downward from the undersurface of the first burner;

a second mixing tube for supplying gas mixture into the second burner, extended downward from the undersurface of the second burner;

an opening formed on the first burner through which the second mixing tube passes; and

a plurality of passages in which air flows for combusting gas mixture at the flame holes of the first and second burners,

wherein the plurality of passages includes;

a first passage disposed between an undersurface of the first burner and a top surface of a top plate on which the first burner is installed; and

a second passage for air flow into the second burner defined between an inner surface of the opening and an outer periphery of the second mixing tube.

2. The top burner according to claim 1, wherein the plurality of passages includes:

a third passage defined at least between the top surface of the first burner and the undersurface of the second burner.

3. The top burner according to claim 1, further comprising an air guide for guiding air that flows into the first passage.

4. The top burner according to claim 3, wherein the air guide extends radially from a perimetric surface bottom of the first burner.

5. The top burner according to claim 3, wherein the air guide extends radially in a downward slope from a perimetric surface bottom of the first burner.

6. The top burner according to claim 1, further comprising an air guide partitioning air that flows into the first passage.

7. The top burner according to claim 6, wherein the air guide extends downward from an undersurface of the first burner.

8. The top burner according to claim 6, wherein the air guide is disposed radially at a preset central angle apart about a through-opening defined through cutting away a portion of an undersurface of the first burner, the second mixing tube passing through the through-opening to supply gas to the second burner.

9. The top burner according to claim 6, wherein an undersurface of the air guide extends in an upward slope toward a through-opening defined through cutting away a portion of an undersurface of the first burner, the second mixing tube passing through the through-opening to supply gas to the second burner.

10. The top burner according to claim 1, further comprising:

a first air guide guiding air that flows into the first passage; and

a second air guide partitioning the air that flows into the first passage.

11. The top burner according to claim 10, wherein

the first passage is defined between a top surface of a top plate having at least the first burner installed thereon, and an undersurface of the first burner,

the first air guide guides the air flowing into the first passage radially, and

the second air guide partitions the air flowing into the first passage radially.

12. The top burner according to claim 1, further comprising an inflow preventing member for preventing flow of impurities generated from food heated by at least one burner from the first and second burners into the one passage.

13. The top burner according to claim 12, wherein the inflow preventing member is provided on the top surface of the first burner proximate to a perimeter of the second burner.

14. The top burner according to claim 1, further comprising a mixing member for interfering with flow of gas mixture mixed with air supplied into the second burner through the second mixing tube, and enabling mixing of air and gas.

15. The top burner according to claim 14, wherein the mixing member projects from a side of an inner space of the second burner in a direction opposite to a direction in which gas mixture is supplied to the inner space of the second burner from the second mixing tube.

16. The top burner according to claim 14, wherein the mixing member projects from a side of an inner space of the second burner in a direction proximate to an end of the second mixing tube communicating with the inner space of the second burner.

17. The top burner according to claim 14, wherein the mixing member reduces a distance between a top of the second mixing tube communicating with an inner space of the second burner, and a portion of a ceiling of the inner space of the second burner that is directly above the top of the second mixing tube.

18. The top burner according to claim 14, wherein at least a portion of the mixing member overlaps with an end of the second mixing tube communicating with an inner space of the second burner, in a direction in which gas mixture is supplied to the inner space of the f second burner through the second mixing tube.

19. The top burner according to claim 1, further comprising a covering member covering an insertion hole, through which the second mixing tube that supplies gas mixture mixed with air into the second burner formed on a top plate of a cooker passes, from a space between a top surface of the top plate on which the first burner is installed and an undersurface of the first or second burner.

20. The top burner according to claim 19, wherein the covering member extends downward from the undersurface of the second burner, and has a bottom end thereof supported on the top surface of the top plate proximate to the insertion hole.

21. The top burner according to claim 19, wherein the covering member is provided on an undersurface of the second burner to be separated by a preset gap at an inner periphery thereof with an outer periphery of the second mixing tube communicating with the undersurface of the second burner.

22. The top burner according to claim 1, wherein gas mixture mixed with air that is supplied into the first burner is supplied by at three or more mixing tubes disposed by a preset angle apart about a center of an undersurface of the first burner.

23. The top burner according to claim 1, further comprising a mixing recess providing a space for mixing gas mixture mixed with air supplied into the second burner by the second mixing tube.

24. The top burner according to claim 23, wherein the second mixing tube has one end thereof communicating with an inside of the second burner, and the mixing recess is disposed inside the second burner between the one end of the second mixing tube communicating with the inside of the second burner and one or more of the flame holes of the second burner that are closest to the one end of the second mixing tube.

25. The top burner according to claim 23, wherein a top of the second mixing tube communicates with an inside of the second burner by passing through a floor of the second burner, and the mixing recess is defined through recessing downward into a portion of the floor inside the second burner, and the portion is defined by the floor inside the second burner such that the portion is between the top of the second mixing tube and at least one or more of the flame holes of the second burner proximate to the top of the second mixing tube.

26. The top burner according to claim 23, wherein the mixing recess is provided over a central angle of the second burner such that a distance between ends of the mixing recess is at least greater than a diameter of the second mixing tube.

27. The top burner according to claim 1, wherein at least one of the first and second burners comprises:

a burner head; and

a burner cap seated on a top surface of the burner head,

wherein a portion of the flame holes is defined through hole processing, and a remainder of the flame holes is defined between flame hole defining teeth formed on one of the burner head and the burner cap and the other of the burner head and the burner cap.

28. The top burner according to claim 27, wherein

main flame holes of the flame holes for forming flames to heat food are defined through hole processing of the burner head or the burner cap, and

auxiliary flame holes of the flame holes for transferring flames when gas mixture discharged and combusted at the main flame holes is extinguished, the auxiliary flame holes defined by the flame hole defining teeth and one of the burner head and the burner cap.

29. The top burner according to claim 1, wherein at least one of the first and second burners comprises:

a burner head formed with flame hole defining teeth; and

a burner cap mounted on a top surface of the burner head, and formed with flame hole defining teeth corresponding to the flame hole defining teeth of the burner head,

wherein through the flame hole defining teeth of the burner head and the flame hole defining teeth of the burner cap, the flame holes are given a circular flow section in a direction in which gas mixture is discharged.

30. The top burner according to claim 1, further comprising a flame guiding portion guiding and diffusing flames generated from combustion of gas mixture at the flame holes of the second burner.

31. The top burner according to claim 30, wherein the flame guiding portion is formed through a perimetric surface of the second burner being curved at a preset curvature outward and upward from below.

32. The top burner according to claim 30, wherein the second burner comprises:

a second burner head seated on a top surface of the first burner; and

a second burner cap seated on a top surface of the second burner head,

wherein the flame guiding portion is formed through a perimetric surface of the second burner cap being curved at a preset curvature outward and upward from below.

33. The top burner according to claim 1, further comprising an anti-separation member for preventing arbitrary separation when the first or second burner is seated on the top plate.

34. The top burner according to claim 33, wherein the anti-separation member is a projection provided on an outer periphery of the second mixing tube supplying gas mixture mixed with air into the second burner.

35. A cooker comprising:

a top burner unit comprising a top plate defining a top surface exterior, a top grid provided on the top plate and on which food is placed, and the top burner in claim 1; and

an oven unit provided below the top burner.

36. A top burner comprising:

an outer burner installed on a top surface of a top plate, and provided with a plurality of flame holes to form flames through combusting gas mixture at a perimeter thereof;

an inner burner installed on a top surface of the outer burner, and provided with a plurality of flame holes to form flames through combusting gas mixture at a perimeter thereof disposed inward to the perimeter of the outer burner;

a plurality of first mixing tubes supplying gas mixture mixed with air inside the outer burner;

a second mixing tube supplying gas mixture mixed with air inside the inner burner;

a supporting rib for supporting an outer burner cap on a top surface of an outer burner head;

an opening formed on the outer burner and through which the second mixing tube passes; and

a plurality of passages in which air flows for combusting gas mixture at the flame holes of the outer burner and inner burner,

wherein the plurality of passages includes;

a first passage disposed between an undersurface of the outer burner and a top surface of a top plate on which the outer burner is installed;

a second passage for air flow into the outer burner defined between an inner surface of the supporting rib and an outer periphery of the second mixing tube; and

a third passage defined between the top surface of the outer burner and an undersurface of the inner burner.

37. The top burner according to claim 36,

wherein the outer burner comprises:

the outer burner head connected to the first mixing tube; and

the outer burner cap mounted on a top surface of the outer burner head, and having the inner burner installed on a top surface thereof, and

wherein the inner burner comprises;

an inner burner head connected to the second mixing tube, and mounted on the top surface of the outer burner head; and

an inner burner cap mounted on a top surface of the inner burner head.

38. The top burner according to claim 37, wherein

a first air guide is provided at a perimetric surface of the outer burner head to guide air flowing into a first passage of the plurality of passages, and

a second air guide is provided at an undersurface of the outer burner head to partition air flowing into the first passage.

39. The top burner according to claim 38, wherein

the first passage is defined between at least the top surface of the top plate and an undersurface of the outer burner,

the first air guide radially guides the air flowing into the first passage, and

the second air guide radially partitions the air flowing into the first passage.

40. The top burner according to claim 37, wherein an inflow preventing member is formed projecting upward on the top surface of the outer burner cap proximate to a perimeter of the inner burner.

41. The top burner according to claim 37, wherein a mixing member is provided at an undersurface of the outer burner cap, to interfere with flow of gas mixture mixed with air supplied into the outer burner through at least one of the first mixing tubes, and induce mixing of air and gas.

42. The top burner according to claim 41, wherein the mixing member projects downward from the undersurface of the outer burner cap.

43. The top burner according to claim 41, wherein the mixing member reduces a distance between a top of the first mixing tube communicating with the undersurface of the outer burner head, and the undersurface of the outer burner cap.

44. The top burner according to claim 37, wherein the outer burner head and the inner burner head are each provided with a covering member on undersurfaces thereof, for covering an insertion hole defined in the top plate, through which the first and second mixing tubes pass.

45. The top burner according to claim 44, wherein each covering member extends downward from the undersurfaces of the respective outer burner head and the inner burner head, and has a bottom thereof supported on the top surface of the top plate proximate to the insertion hole.

46. The top burner according to claim 37, wherein a mixing recess is defined in a floor of the outer burner head or an undersurface of the outer burner cap, the mixing recess in which gas mixture mixed with air supplied into the outer burner or the inner burner by the first mixing tube is mixed.

47. The top burner according to claim 46, wherein tops of the first mixing tubes and the top of the second mixing tube communicate with an inside of the outer burner or the inner burner, respectively, by passing through the floor of the outer burner or inner burner, and the mixing recess is defined through recessing downward into a portion of the floor inside of the outer burner or inner burner, and the portion is defined by the floor inside the outer burner or inner burner such that the portion is between the tops of the first mixing tubes and at least one or more of the flame holes of the outer burner or proximate to the tops of the first mixing tubes or between the top of the second mixing tube and at least one or more of the flame holes of the inner burner.

48. The top burner according to claim 37, wherein

a portion of the flame holes of the outer burner is defined through hole processing of the outer burner head or the outer burner cap, and

a remainder of the flame holes of the outer burner is defined between flame hole defining teeth formed on one of the outer burner head and the outer burner cap, and the outer burner cap or the outer burner head.

49. The top burner according to claim 37, wherein

a portion of the flame holes of the inner burner is defined through hole processing of the inner burner head or the inner burner cap, and

a remainder of the the flame holes of the inner burner is defined between flame hole defining teeth formed on one of the inner burner head and the inner burner cap, and the inner burner cap or the inner burner head.

50. The top burner according to claim 37, wherein flame hole defining teeth are formed on the outer burner head and the outer burner cap, respectively, to define the flame holes of the outer burner, and through the flame hole defining teeth of the outer burner head and the flame hole defining teeth of the outer burner cap, the flame holes of the outer burner are given a circular flow section in a direction in which gas mixture is discharged.

51. The top burner according to claim 37, wherein flame hole defining teeth are formed on the inner burner head and the inner burner cap, respectively, to define the flame holes of the inner burner, and through the flame hole defining teeth of the inner burner head and the flame hole defining teeth of the inner burner cap, the flame holes of the inner burner are given a circular flow section in a direction in which gas mixture is discharged.

52. The top burner according to claim 37, wherein a flame guiding portion is formed curved at a preset curvature upward and outward from below at a perimetric surface of the inner burner head or the inner burner cap, to guide and diffuse flames generated from combustion of gas mixture at the flame holes of the outer burner.

53. A cooker comprising:

a top burner unit comprising a top plate defining a top surface exterior, a top grid provided on the top plate and on which food is placed, and the top burner in claim 36; and

an oven unit provided below the top burner.

54. The top burner according to claim 36, wherein the second passage is communicated with the third passage.