MANUFACTURING METHOD OF FIN TUBE TYPED HEAT EXCHANGER AND COMBUSTION APPARATUS HAVING THE SAME
Provided are a method for manufacturing a fin tube type heat exchanger that may use a pipe expansion apparatus for a long time and improve productivity, and a combustion apparatus including the fin tube type heat exchanger. The method for manufacturing a fin tube type heat exchanger (51) includes: a...
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Zusammenfassung: | Provided are a method for manufacturing a fin tube type heat exchanger that may use a pipe expansion apparatus for a long time and improve productivity, and a combustion apparatus including the fin tube type heat exchanger. The method for manufacturing a fin tube type heat exchanger (51) includes: a pipe expanding process of expanding a thermoelectric pipe (21) by inserting a pipe expansion apparatus (100) into the thermoelectric pipe (21) inserted into an insertion hole (20) of a thermoelectric fin (2). The pipe expanding process includes: a first process of expanding a thermoelectric pipe (21) such that an enlarged diameter prediction range (22) to an insertion hole (20) by expanding the thermoelectric pipe (21) radially into a diameter expansion state in a state in which a pipe expansion apparatus (100) is stopped in the enlarged diameter prediction range (2) in the thermoelectric pipe (21); and a second process of moving the pipe expansion apparatus (100) to the next enlarged diameter prediction range (22) in the thermoelectric pipe (21) in an enlarged diameter state by releasing the expansion of the pipe expansion apparatus (100) in a radial direction.
(과제) 확관장치를 장수명으로 사용할 수 있고, 생산성을 향상시키는 핀 튜브식 열교환기의 제조방법 및 핀 튜브식 열교환기를 구비하는 연소장치를 제공한다. (해결 수단) 핀 튜브식 열교환기(51)의 제조방법은, 전열핀(2)의 삽입구멍(20)에 삽입시킨 전열관(21) 내에 확관장치(100)를 삽입하여 전열관(21)을 확관시키는 확관공정을 포함한다. 확관공정은, 확관장치(100)를 전열관(21) 내의 소정의 확경예정범위(22)에 정지시킨 상태에서 전열관(21)의 직경방향으로 확대시켜서 확경상태로 함으로써 확경예정범위(22)를 삽입구멍(20)과 밀착하도록 확관시키는 제 1 공정과, 확관장치(100)의 직경방향으로의 확대를 해제하여 축경상태에서 확관장치(100)를 전열관(21) 내의 다음의 확경예정범위(22)로 이동시키는 제 2 공정을 가지고, 상기 제 1 공정과 상기 제 2 공정을 교대로 반복하여 실행한다. |
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