A rotating device and a vacuum pump are provided, having a structure in which a refrigerant or the like does not leak out to an inside and which can sufficiently cool a rotating body, obtain high reliability, and realize cost reduction. The structure is constituted to include: a casing; a rotating body including a rotating shaft disposed rotatably relative to the casing, the rotating body constituted integrally with the rotating shaft; a hollow part formed along a center of the rotating shaft in the rotating body; and a cooling rod which is fixed to the casing and provided in a state of non-contact with the rotating body in the hollow part without having a mechanism for injecting a refrigerant, and which absorbs a radiation heat of the rotating body to cool the rotating body.

Systems and methods for thermal washers are described herein. A thermal washer may comprise a first metallic plate having a first inner surface and a first outer surface, a second metallic plate having a second inner surface and a second outer surface, the second metallic plate being oriented substantially parallel to the first metallic plate such that the first inner surface and the second inner surface are separated by a gap, and a thermal wool in contact with the first inner surface and the second inner surface, the thermal wool filling a void between the first inner surface and the second inner surface. A width of the thermal wool may be substantially equal to a width of the first metallic plate and a length of the thermal wool may be substantially equal to a length of the first metallic plate.

Systems and methods for thermal seals are described herein. A thermal seal may comprise a first metallic plate having a first inner surface and a first outer surface, a second metallic plate having a second inner surface and a second outer surface, the second metallic plate being oriented substantially parallel to the first metallic plate such that the first inner surface and the second inner surface are separated by a gap, and a thermal wool having a plate portion in contact with the first inner surface and the second inner surface, the plate portion filling a void between the first inner surface and the second inner surface, and having a shoulder portion extending from a perimeter of the plate portion, the shoulder portion extending outward from between the first metallic plate and the second metallic plate.

Turbine engine (80) components, such as blades (92), vanes (104, 106), ring segment 110 abradable surfaces 120, or transitions (85), have furcated engineered groove features (EGFs) (403, 404, 418, 509, 511, 512) that cut into the outer surface of the component's thermal barrier coating (TBC). In some embodiments, the EGF planform pattern defines adjoining outer hexagons (560, 640, 670, 690, 710). In some embodiments, the EGF pattern further defines within each outer hexagon (560, 640, 670, 690, 710) a planform pattern of adjoining inner polygons (570, 580, 590, 600, 610, 680, 682, 700, 702, 704, 705, 720). At least three respective groove segments (509, 511, 512) within the EGF pattern (506, 507, 508) converge at each respective outer hexagonal vertex (510, 564) or inner polygonal vertex (574, 564, 604, 614) in a multifurcated pattern, so that crack-inducing stresses are attenuated in cascading fashion, as the stress (σ.sub.A) is furcated (σ.sub.B, σ.sub.C) at each successive vertex juncture.

A vacuum pump comprises: a pump main body; a heater provided at the pump main body; a power source device configured to supply power to the pump main body; a cooler provided between the pump main body and the power source device; a connection plate provided between the pump main body and the cooler; a first heat insulating plate arranged between the cooler and the connection plate; and a second heat insulating plate arranged between the pump main body and the connection plate.

A handheld fan includes a housing, a fan assembly mounted in the housing and close to a rear portion of the housing, a semiconductor chilling plate mounted in the housing and arranged in front of the fan assembly, and a cold conducting piece arranged on a front end of the housing. A front end surface of the semiconductor chilling plate is a cooling surface. The cold conducting piece is attached to the front end surface of the semiconductor chilling plate. An air outlet is defined between the cold conducting piece and the housing.

A multi-stage fluid conditioning system having a housing with a fluid inlet and outlet. A shaft extends within the housing and supports a first fan unit with a first magnet/electromagnet plate on an inlet side of said housing and a second fan unit with a second magnet/electromagnet supporting plate on an outlet side of the housing. Each of the first and second magnet/electromagnet supporting plates include at least one vane configured to direct fluid flow. The shaft rotates the plates in order to draw a fluid flow through the inlet and successively across the inlet and outlet sides for thermal conditioning resulting from creation of high frequency oscillating magnetic fields according to a succeeding conditioning operations before being outputted the conditioned fluid from the housing through the fluid outlet.

A vacuum pump capable of suppressing the solidification of gas in a normal operation of a pump is provided. Provided is a vacuum pump including a casing that has an inlet port for sucking gas from outside and an outlet port for exhausting the gas to the outside; a turbo-molecular-pump mechanism that is disposed in the casing and includes rotor blades and stator blades alternately arranged in multiple stages in an axial direction; a thread-groove-pump mechanism that is disposed in the casing and is connectedly disposed on an exhaust side of the turbo-molecular-pump mechanism; first temperature regulating means that is configured to regulate cooling of the turbo-molecular-pump mechanism; and second temperature regulating means that is configured to regulate heating of the thread-groove-pump mechanism.

A vacuum pump includes a rotor provided with a plurality of rotor blades and a rotor cylinder portion, a driving portion, a bearing, stator blades, a thread groove stator that is disposed downstream of the stator blades and has an inner peripheral surface facing an outer peripheral surface of the rotor cylinder portion, and a heat insulating wall disposed downstream of the thread groove. The heat insulating wall includes a ring-shaped annular portion, and a substantially cylindrical wall portion extending from an inner portion of the annular portion in the radial direction to the upstream side and forming a flow path on the outer peripheral surface side. A first corner portion is formed between an upstream-side surface of the annular portion and the outer peripheral surface of the wall portion, the first corner portion being formed in an arc shape.

A fan includes a rotor having a shaft, a rotor core having an annular shape about a center axis of the shaft, and a permanent magnet fixed to the rotor core, the permanent magnet forming a magnet magnetic pole, a part of the rotor core forming a virtual magnetic pole, a stator surrounding the rotor from outside in a radial direction about the center axis, a rotating blade fixed to the shaft and formed of a nonmagnetic material, and a frame surrounding the stator from outside in the radial direction and formed of a nonmagnetic material.