Burner to evenly distribute flame

A burner comprising:

• a burner head to receive a mixed gas;
• and
• a burner cap to cover the burner head,
• wherein the burner head comprises an outer wall having a plurality of first flame holes through which a flame is discharged, an inner wall located at an inside of the outer wall and having a plurality of second flame holes through which the flame is discharged, a mixed gas chamber between the outer wall and the inner wall, and a chamber forming wall which forms a flame staying chamber for containing the flame;
• wherein the burner cap comprises a distribution guide to guide a flow of the mixed gas so that the mixed gas in the mixed gas chamber flows in a circumferential direction of the mixed gas chamber, and
• wherein a first portion of the mixed gas flowing along the distribution guide is distributed to the plurality of first flame holes, and a second portion of the mixed gas flowing along the distribution guide flows toward the plurality of second flame holes,
• wherein the distribution guide protrudes downward from a lower surface of the burner cap, and includes a guide lower surface, a first guide surface to form an inner periphery of the distribution guide, and a second guide surface to form an outer periphery of the distribution guide,
• wherein the distribution guide includes a groove for preventing interference with the chamber forming wall,
• wherein the groove is recessed from the second guide surface toward the first guide surface, and
• wherein when the burner cap is seated on the burner head, the chamber forming wall is located in the groove.