A combustor applied in thermophotovoltaic system

A combustor applied in thermophotovoltaic system comprising:

• a combustion device, which includes a combustion body and a burning unit disposed in said combustion body;
• wherein, said combustion body is transparent and neat-resistant;
• said combustion body including an inner wall, an outer wall, an opening surrounded by an end of said inner wall, and an accommodating room cooperatively formed by a surrounding of said inner wall as well as communicated with said opening;
• said burning unit being disposed to insert into said accommodating room;
• a burning-supported medium being attached to said inner wall of said combustion body;
• a gas inlet for an entrance of combustion-supporting gas, a fuel inlet for an entrance of fuel, and a first outlet for discharge of hot product, gas derived from combusting being respectively defined on said combustion body;
• thereby, a fuel/air mixture being released via said burning unit;
• and
• a reversed tube disposed to cover said combustion body;
• said opening of said combustion body and said reversed tube being spaced out to form a gap;
• a room for air swirling being brought, about while said reversed tube covers said combustion body;
• said room and said accommodating room of said combustion body being intercommunicated via said opening;
• said gap between said reversed tube and said combustion body being formed for said hot product gas to be circulated within said combustor and then discharged.