Gas radiation burner and controlling method thereof

A gas radiation burner comprising:

• a plurality of gas supply units for spraying a mixed gas of a gas and air, wherein each of the gas supply units comprises at least one mixing pipe;
• a burner body having a burner pot accommodating the mixed gas supplied by the gas supply units and a burner housing provided on the burner pot to configure a combustion chamber;
• a burner mat provided over the burner pot to emit a radiant heat generated by combustion of the mixed gas supplied by the burner pot;
• and
• an air supply unit supplying air to the burner housing,
• a pressure recovering member configured to reduce a speed of the mixed gas sprayed by the mixing pipe, wherein the pressure recovering member is located at an exit end of the mixing pipe and is spaced apart from the mixing pipe,
• wherein the gas supply units uniformly provide the mixed gas into the burner pot, and are symmetrically installed to the burner pot so that the mixed gas is evenly distributed into the burner pot, and
• wherein each of the gas supply units further comprises:
• an air detecting member at an air supply passage for supplying the air into the gas radiation burner to detect a pressure of the supplied air;
• an opening/closing member for opening/closing the air supply passage;
• and
• a control unit controlling the opening/closing member to selectively open or close the opening/closing member according to the pressure of the supplied air detected by the air detecting member.