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US 4,363,729 AGranted
Magnetic filter
AssigneeDaidotokushuko Kabushikikaisha
InventorJunichi Yano
Life of this patent
Estimating the term…
Abstract
A magnetic filter for separating ferromagnetic particles from a fluid. The filter includes a filter container having an inlet, outlet, and inner space wherein an annular filter element is located. A magnetic-field generating device is surrounded by the annular filter element, and is adapted to magnetize the filter element. A fluid to be filtered is allowed to enter the filter from the inlet, and ferromagnetic particles in suspension in the fluid, when passing the filter element, are attracted thereby. The purified fluid is allowed to flow out of the filter through the outlet.
Claims4
A magnetic filter comprising:
- (i) a filter container having an inlet and an outlet,
- (ii) a sealed hollow inner body disposed coaxially within said filter container and bounding therewith an annular passage communicating with said inlet and outlet,
- (iii) an annular filter element of magnetizable material disposed coaxially in said container across said annular passage and having an upstream face and a downstream face,
- (iv) a pair of annular perforated pole pieces disposed coaxially in said container and across said flow passage and abutting respectively said upstream face and said downstream face of said filter element, the perforations of said pole pieces providing a plurality of flow paths therethrough, and
- (v) a magnetic field generating device disposed in said inner body and comprising an iron core, a coil wound round said core, and a DC power supply means including an electric wire connected to said coil for energizing the same, said core and coil being disposed coaxially within said pole pieces for transmitting a magnetic field through said pole pieces to said filter element for magnetizing said filter element.
2 more elements
Dependencies are inferred from the claim text.