Patent ID: 8381715
Filing Date: 2013-02-26
Classification: F23C,F23D,F24C,F24H,Y02B

Abstract:
1. A radiant tube heater comprising a housing; an opening in one end of said housing; a burner tube extending outwardly from said housing around said opening; a burner in said housing spaced apart from said opening; a gas inlet extending into said housing and connected to said burner for introducing fuel into said burner; a blower in said housing for introducing combustion air into the housing for mixing with the fuel and for blowing a flame and the products of combustion out of the housing into said burner tube; and a flame tube in said burner tube for receiving the flame, the flame tube extending a short distance from the opening into the burner tube whereby air required for efficient combustion of the gases passes between the burner and the opening to create the flame, which is blown through the opening and then through the flame tube, and excess air exiting the housing through the opening passes between the burner tube and the flame tube for heating by the flame tube.