| 摘要 |
PROBLEM TO BE SOLVED: To reliably connect and hold a connecting pipe (30) from the inside of a casing (12) to a discharge port (20).SOLUTION: A casing (12) includes a port opposed surface (38-5) opposed to a port (36-2) thereof and a connecting pipe support (38) comprising a mounting opening (38-2). A connecting pipe (30) includes a connecting pipe (30-1) opposed to an inner surface of the port and a fastening projection (30-6). The mounting opening is shaped so that the fastening projection protruding from an outer peripheral surface of a connecting pipe passes therethrough. The fastening projection is inserted between the connecting pipe support and the port by turning the connecting pipe about a longitudinal axial line (A) while the fastening projection passes through the mounting opening and in which a flow channel of the connecting pipe is in communication with a discharge port, and the connecting pipe is thereby held in the longitudinal axial line direction. |
