Transformer and power converter
AssigneeHitachi, Ltd.
InventorHiroshi HOZOJI
Life of this patent
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Abstract
An object is to improve a core and heat radiation properties from the coil, and to reduce the size of a transformer. In order to attain the object described above, a transformer includes a bobbin wound around with a coil, a columnar core center portion in which the bobbin is mounted, and a plurality of core leg portions joining both ends of the core center portion on the outside of the coil. The size of the core leg portion is larger than the size of the other core leg portions, and the core leg portion includes a flat outer circumferential surface approximately parallel to a surface which is tangent to an outer circumferential side surface of the coil. The transformer is disposed in a housing such that the outer circumferential surface of the core leg portion is tangent to a floor surface of the housing.
Claims14
A transformer comprising:
- a coil configured by winding a conductive wire into the shape of a spiral cylinder;
- a core center portion having a columnar shape in which the coil is mounted;
- and
- a plurality of core leg portions joining both ends of the core center portion on the outside of the coil,
- wherein the transformer is disposed in a storage housing in a state in which a central axis of the core center portion is approximately parallel to a floor surface of the storage housing on which the transformer is mounted.
A power converter comprising:
- a transformer including a coil configured by winding a conductive wire into the shape of a spiral cylinder, a core center portion having a columnar shape in which the coil is mounted, and a plurality of core leg portions joining both ends of the core center portion on the outside of the coil;
- a storage housing in which the transformer is mounted on a floor surface;
- and
- a fan which is disposed on a side surface portion of the storage housing and blows cold air to the transformer,
- wherein the transformer is disposed in the storage housing such that a central axis of the core center portion is approximately parallel to the floor surface of the storage housing on which the transformer is mounted and a direction of the central axis of the core center portion is identical to a direction of the cold air blown from the fan.
Dependencies are inferred from the claim text.