| 摘要 |
PURPOSE:To prevent the generation of a liquid stagnation part and to enhance the pressure resistance of each header by connecting a pair of headers constituted as dividing members from a pull rod, a header fixing metal fitting and an auxiliary connection means and providing a horizontal hole to the header fixing metal fitting so as to pierce the body part thereof. CONSTITUTION:A pair of plastic headers 1, 10 respectively mounted to both ends of a case 20 and a perforated support pipe 4a are constituted as two dividing members 1a, 1b, 10a, 10b. A pair of these headers are connected from the pull rod 6 piercing through a support pipe group 4 from the first header 1, a header fixing metal fitting 11 inserted from the second header 10 to be connected to the pull rod 6 and connecting both headers in a tensile state to make it possible to enhance the pressure resistance of the headers and an auxiliary connection means connecting the respective dividing members in both headers at the outer peripheral edge parts thereof. A horizontal hole 12 is provided to the fixing metal fitting so as to pierce the body part thereof to prevent the generation of a liquid stagnation part in the perforated support pipe 4a. As a result, the pressure resistance of each header can be enhanced. |
