| 摘要 |
<p>The outlet flow channel (21) has a length (LA) which is at least 8.5 times its diameter. The length is preferably at least 40-70 mm and the diameter is 3 - 4.5 mm. Two to six outlet channels (21) are provided, arranged in a channel casing (24). The casing (7, 8) has a tubular extension (25) surrounding a cavity (28), with the channel casing (24) in the cavity. The channel casing extends into the outlet flow space (19). It is constructed as a single piece with the casing (7, 8). The outlet flow space surrounds an approaching flow channel casing (18), in which the supply channel (15) is arranged, over part of its length.</p> |
