| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing method of a heat insulating board of refrigerant piping and a fixing fitting indirectly jointing heat insulating boards each other by a fixing fitting. SOLUTION: The plurality of heat insulating boards 12A, 12B covering refrigerant piping 10 are connected in the axial direction of the refrigerant piping 10. These heat insulating boards 12A, 12B are pinched by a setting board 14 arranged inside of an overlapped part of the seam and a pushing board 16 arranged outside. The narrowed mouth side of the fixing fitting 18 formed in a trumpet shape is inserted to a through-hole 20 made on the overlapped part of the heat insulating boards 12A, 12B, and the inner periphery of the fixing fitting 18 is welded to the setting board 14. The pushing board 16 is pushed with the curve of the side of the fixing fitting 18 and the heat insulating boards are fixed each other. The heat insulating boards 12A, 12B are indirectly fixed by welding the fixing fitting 18 to the pushing board 14. COPYRIGHT: (C)2004,JPO
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