Minebea Company, Limited

Minebea Mitsumi Inc.

Yukihiro Higuchi

Naoya Murakami

Atsushi Taroda

Tomoyoshi Sasajima

Toshiaki Seima

Koichi Tamai

Haruomi Morohashi

Koichi Takeda

Masahiro Kitagawa

A rotating device includes a shaft, an impeller fixed to the shaft, a motor causing the impeller to rotate, and a casing accommodating the impeller and the motor. The casing includes a suction port and a discharge port for a fluid. The casing and a heat sink are adjacent in a radial direction of the impeller. The heat sink includes a first part adjacent to the discharge port and a second part disposed inside the discharge port. The first part is in contact with a heat pipe. The second part is in contact with the casing in an axial direction of the impeller.

Rotating device

An axial fan comprises an impeller. The impeller comprises a hub and a plurality of blades disposed on an outer circumference of the hub. A pressure surface of each of the blades is at least partially a convex surface bulging from a suction surface side to a pressure surface side. The convex surface is provided within a predetermined region of the pressure surface of the blade on a hub side. The predetermined region is arranged as part of a radial width of the blade.

Axial fan

An impeller of this disclosure includes a hub having a ring shape; and a plurality of blades that are provided on an outer periphery of the hub, wherein the blade has a trailing edge formed such that an inner side of a radial width of the blade is curved in a direction opposite to a rotation direction, in a plan view as viewed in a direction of a rotation axis.

Impeller and fan including the impeller

An axial flow fan includes an impeller having a hub and vanes disposed at equal intervals on an outer peripheral portion of the hub; a rotor shaft located at the center of the impeller; a motor portion rotating the impeller around the rotor shaft as an axis; a casing surrounding an outer periphery of the impeller; a base portion supporting the motor portion; and a stationary blade located in a blowout opening side of air flow, the stationary blade connecting the base portion and the casing, wherein the stationary blade has on its surface a guide portion allowing air flow flowing along the surface to be rectified and guided from a direction of the blowout opening to an outside.

Axial flow fan

A centrifugal fan includes: a casing; and an impeller that is attached to a rotation shaft of a motor, wherein the casing has an upper suction port and a lower suction port, wherein the impeller has a rotor hub, a plurality of blades arranged around the rotor hub in a circumferential direction, and a main plate coupled to the rotor hub and connects the blades in the circumferential direction, and wherein an inclination of an outer edge of the blades at an upper blade portion that is located above the main plate with respect to a plane parallel to the rotation shaft and an inclination of the outer edge of the blades at a lower blade portion that is located below the main plate with respect to the plane parallel to the rotation shaft are set to be in the same direction.

Centrifugal fan

An axial flow fan motorcomprises: a casing outer frame; an impeller; a rotor shaftas a rotation axis at a center of the impeller; a bearing housingin an inside of a rotor housing; and a base portion hubin an air blowout opening side, wherein, in a cross-sectional view along the rotation axis, the base portion hubhas an outer peripheral portionat least partially inclined to the rotation axis side by an angle &#x3b8;1 toward the air blowout opening sidewith regard to a straight line parallel to the rotation axis, and the casing outer framehas an inner peripheral portionat least partially inclined to the rotation axis side by an angle &#x3b8;2 toward the air blowout opening sidewith regard to a straight line parallel to the rotation axis.

Growing community of inventors

Fukuroi, Japan

Yukihiro Higuchi