Evaporation type burner

An evaporation type burner comprising,

• a combustion chamber which is a space defined by an inside housing that is a bottomed cylindrical container consisting of a bottom wall and a peripheral wall,
• an impregnation member which is a member disposed at a first end that is an end on said bottom wall side of said inside housing in said combustion chamber and has capillary structure and/or porous structure,
• a fuel supply part which supplies fuel to said impregnation member to impregnate said fuel into said impregnation member, and
• an igniting device which heats vapor of said fuel evaporating from said impregnation member to light up said vapor;
• and
• a plurality of air-supply holes which is opened to said combustion chamber and supplies air to said combustion chamber is formed in said peripheral wall of said inside housing,
• wherein:
• said evaporation type burner further comprises an exudation prevention member which is a member having lower fuel permeability that is a characteristic value corresponding to permeability of said fuel than that of said impregnation member at least in an opposite region which is a surface region of said impregnation member opposite to an infiltration region which is a surface region of said impregnation member where said fuel infiltrates into said impregnation member across said impregnation member,
• a part of said exudation prevention member is embedded inside of said impregnation member while the other part of said exudation prevention member is projected from a surface of said impregnation member,
• the part of said exudation prevention member, which is embedded inside of said impregnation member, is included in the part of said exudation prevention member, which is projected from the surface of said impregnation member, in a projection onto a plane perpendicularly intersecting with an axis direction of said inside housing, and
• a level difference is formed at an interface between said impregnation member and the part of said exudation prevention member, which is projected from the surface of said impregnation member.