| 摘要 |
The present invention relates to a helical heat tube for heat exchange, in which a fluid comes into contact with the outer surface thereof, and a combustion gas is fed to the inside, thereby performing the heat exchange. The helical heat tube comprises a tube with a hollow portion through which the combustion gas passes, has both ends opened, and includes a baffle engaged to the inside of the tube. Front and rear surfaces of the tube are dented to form a plurality of first and second grooves, and first and second protrusions are formed between the first and second grooves. The front and rear surfaces of the baffle are formed with inclined third and fourth grooves, and third and fourth protrusions are formed between the third and fourth grooves. Therefore, the heat tube is reliably used even at high pressure, and generates a discontinuous flow of combustion gas, thereby promoting heat transfer. Also, since the heat tube can be densely arranged in a limited space, the heat transfer efficiency is improved. |
