PROBLEM TO BE SOLVED: To provide a magnet filter capable of more efficiently removing metal powder than prior art.;SOLUTION: A magnet filter 10 of the present invention comprises a plurality of bar magnets 26 and rod-like magnetic substances 25 arranged in an annular shape. A fluid flowing into a case 11 flows out of the case 11 by passing between the bar magnets 26 and the rod-like magnetic substances 25 and between the rod-like magnetic substances 25 and 25. The plurality of bar magnets 26 are distributed in the circumferential direction of a basket-shaped structure 20, and are magnetized such that they are polarized in the circumferential direction to attract one another. Thus, a magnetic field is formed in a closed annular shape, and expansion of a magnetic flux is restrained. Also, the plurality of rod-like magnetic substances 25 are arranged between the bar magnets 26. Thus, the expansion of the magnetic flux is restrained. This makes magnetic force of the magnetic field strong, and metal powder can be more efficiently removed than prior art.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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