Burner device

1 . A gas burner device, comprising:

a burner; and

an injector configured to supply gas to the burner to generate a flame, the injector being on one side of the burner,

the flame being generated around the burner as the gas supplied by the injector burns and the flame includes:

a first flame portion farthest from an installation surface on which the gas burner device is installed;

a second flame portion; and

a third flame portion closest to the installation surface so that the second flame portion is between the first flame portion and the third flame portion and the second flame portion transitions the first flame portion into the third flame portion,

wherein the first flame portion and the second flame portion are unblocked from each other, and

the third flame portion is blocked from the first flame portion and the second flame portion,

wherein the burner comprises:

a stack structure formed by a first spreader, a second spreader, and a third spreader that are sequentially stacked toward the installation surface,

wherein:

the third flame portion is around a position between the third spreader and the second spreader,

the second flame portion is around a position between the second spreader and the first spreader, and

the first flame portion is around an opposite side of the second spreader in the first spreader,

wherein the first spreader comprises:

a first spreader body;

a first gas receiving space formed inside the first spreader body; and

a plurality of first flame holes arranged along a circumference of the first spreader body,

wherein the plurality of first flame holes are formed by penetrating through the first spreader body, such that the first gas receiving space and the first flame portion are unblocked from each other,

wherein the first spreader further comprises:

a gas branch hole formed by penetrating through the first spreader body such that the first gas receiving space and inside of the second spreader are unblocked from each other.

2 . The gas burner device of claim 1 , wherein the injector comprises:

a first orifice configured to supply gas to the first flame portion; and

a second orifice configured to supply gas to the third flame portion.

3 . The gas burner device of claim 1 , further comprising:

a cover configured to be stacked to cover the first spreader from the opposite side of the second spreader with respect to the first spreader.

4 . The gas burner device of claim 1 , wherein the second spreader comprises:

a second spreader body;

a second gas receiving space formed as at least a portion of a surface of the second spreader body facing the first spreader and recessed toward the third spreader; and

a plurality of second flame holes arranged along a circumference of the second spreader body,

wherein the plurality of second flame holes are formed by penetrating through at least a portion of the second spreader body, such that the second gas receiving space and the second flame portion are unblocked from each other.

5 . The gas burner device of claim 1 , wherein at least a portion of the gas branch hole is formed along the circumference of the first spreader body.

6 . The gas burner device of claim 4 , wherein the at least a portion of the second gas receiving space is formed to be recessed on the second spreader body to be closer to the third spreader with respect to a line extending along a direction in which the plurality of second flame holes penetrate.

7 . The gas burner device of claim 6 , wherein the second spreader further comprises:

a plurality of third flame holes formed along the circumference of the second spreader body are closer to the third spreader than the plurality of second flame holes on the second spreader body,

wherein the plurality of third flame holes are blocked from the second gas receiving space, and the plurality of third flame holes are unblocked from the third flame portion.

8 . The gas burner device of claim 6 , wherein the third spreader comprises:

a plurality of third flame holes formed along a circumference of the third spreader,

wherein the plurality of third flame holes are unblocked from the third flame portion.

9 . The gas burner device of claim 7 , wherein the third spreader comprises:

a third spreader body; and

a third gas receiving space formed with at least a portion recessed toward the installation surface from a surface of the third spreader body facing the second spreader,

wherein the second spreader further includes:

an auxiliary third gas receiving space formed with at least a portion recessed toward the first spreader from a surface of the second spreader body facing the third spreader, and separated from the second gas receiving space,

wherein the third gas receiving space connects with the plurality of third flame holes, and

the auxiliary third gas receiving space connects with the third gas receiving space.

10 . The gas burner device of claim 8 , wherein the third spreader comprises:

a third spreader body; and

a third gas receiving space formed with at least a portion recessed toward the installation surface from a surface of the third spreader body facing the second spreader,

wherein the third gas receiving space connects with the plurality of third flame holes.

11 . The gas burner device of claim 1 , wherein an amount of heat generated in the second flame portion per unit time is less than or equal to 10% of an amount of heat generated in the first flame portion per unit time.