| 摘要 |
A magnet pump comprises a synthetic resin casing (1), divided into a front casing (2) and a rear casing (3) and configured to internally form an impeller housing chamber (4) and a magnet can housing chamber (5) contiguous thereto, having an inlet and an outlet for a target fluid to be transferred. The magnet can housing chamber (5) in the casing (1) houses a substantially cylindrical magnet can (11) with a follower magnet (14) mounted on the outer rim thereof. The magnet can (11) is rotatably supported by a spindle (8). A disk-like impeller (21) is fixed at the front end of the magnet can (11), having a flow path formed inside to suck the target fluid from the center, transfer the target fluid outward in the radial direction, and discharge the target fluid from the outer rim. The impeller (21) is housed in the impeller housing chamber (4). A driving rotator (51) is magnetically coupled to the follower magnet (14) through the rear casing (3) for applying a rotational driving force to the impeller (21) through the follower magnet (14). The casing (1) forms an eddy chamber (41) at a position for dividing the front casing (2) and the rear casing (3) along the outer rim of the impeller housing chamber (4) to surround the outer rim of the impeller (21). The eddy chamber (41) has overhangs (41a, 41b) formed at an entry of the eddy chamber (41) hanging over from both sides in the rotational-axis direction of the impeller (21). <IMAGE>
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