초록 ▼

A fluid heater, capable of having a high energy density structure with an increased radiation receiving area, facilitating maintenance services and preventing intrusion of contamination substances, comprises a transparent internal pipe (11) which is open-ended at both ends and is positioned within a

A fluid heater, capable of having a high energy density structure with an increased radiation receiving area, facilitating maintenance services and preventing intrusion of contamination substances, comprises a transparent internal pipe (11) which is open-ended at both ends and is positioned within an external pipe (12) of a fluid heating pipe unit (1). The fluid heating pipe unit (1) is provided with a fluid inlet (31) and a fluid outlet (32). The adjacent ends of the external pipe (12) and internal pipe (11) are connected to each other and sealed, and an electrical radiant heater (2) is arranged within the internal pipe (11) with a space (7) left therebetween. The ends of the electric heater (2) are removably supported by positioning members (91, 92). An inwardly directed radiation reflecting surface (12b) and/or a radiation absorbing material (12c) can be provided as part of the external tube (12).

대표청구항 ▼

A fluid heating device comprising: a transparent annular inner wall forming an internal space for receiving an infrared radiation heating member, said transparent annual inner wall having first and second open ends; an annular outer wall spaced outwardly from said transparent annular inner wall to f

A fluid heating device comprising: a transparent annular inner wall forming an internal space for receiving an infrared radiation heating member, said transparent annual inner wall having first and second open ends; an annular outer wall spaced outwardly from said transparent annular inner wall to form a fluid passageway therebetween; an infrared radiation heating member removably positioned in said internal space so that said infrared radiation heating member can be removed from said fluid heating device without requiring that said fluid passageway be opened; said infrared radiation heating member, when positioned in said internal space, being spaced from said transparent annular inner wall to form a clearance between said infrared radiation heating member and said transparent annular inner wall such that said infrared radiation heating member is at least partially surrounded by said transparent annular inner wall while avoiding direct contact between said infrared radiation heating member and said transparent annular inner wall; and a radiation reflection member positioned on the exterior of said annular outer wall so as to reflect infrared radiation, which has passed from said infrared radiation heating member through said transparent annular inner wall, said fluid passageway, and said annular outer wall, back through said annular outer wall into said fluid passageway.