Abstract: A fire detection apparatus 1A includes a heat detection unit 110A provided such that a part of the heat detection unit 110A is accommodated in an outer cover 20A and another part of the heat detection unit 110A is exposed to an outside of the fire detection apparatus 1A through an insertion hole 120A formed in a top surface portion 22A, and a guard portion 130A which is provided to cover a periphery of the insertion hole 120A and another part of the heat detection unit 110A in the top surface portion 22A and has a plurality of ribs, in which a material of a rib corresponding to a first guard side rib 131A among the plurality of ribs is made different from a material of some other ribs, or a shape of the first guard side rib 131A among the plurality of ribs is made different from a shape of some other ribs.

Abstract: A fire detection apparatus 1A includes a heat detection unit 110A provided such that a part of the heat detection unit 110A is accommodated in an outer cover 20A and another part of the heat detection unit 110A is exposed to an outside of the fire detection apparatus 1A through an insertion hole 120A formed in a top surface portion 22A, and a guard portion 130A which is provided to cover a periphery of the insertion hole 120A and another part of the heat detection unit 110A in the top surface portion 22A and has a plurality of ribs, in which a material of a rib corresponding to a first guard side rib 131A among the plurality of ribs is made different from a material of some other ribs, or a shape of the first guard side rib 131A among the plurality of ribs is made different from a shape of some other ribs.

Abstract: A moving body control device includes an outside recognition unit configured to acquire recognition data of an outside of a moving body, a reception unit which receives designation of a predetermined parking position from a user of the moving body, and a control unit configured to perform automatic parking control for parking the moving body at the predetermined parking position based on the recognition data of the outside and the predetermined parking position, and register the predetermined parking position as a designated parking position. The control unit is configured to register feature points related to the designated parking position by using a plurality of patterns based on illuminance of the outside calculated from the recognition data of the outside.

Abstract: An authentication method is used by an automated driving system that includes a vehicle and an external device, the external device communicating with the vehicle to cause the vehicle to implement automated driving. The vehicle holds a first certificate that certifies validity of the vehicle. The external device holds a second certificate that certifies validity of the external device. The authentication method includes: validating a third certificate that certifies validity of a combination of the vehicle and the external device, in accordance with a result of device authentication performed between the vehicle and the external device by reference to the first certificate and the second certificate.

Abstract: A quartz glass crucible has, from an inner surface side toward an outer surface side of the crucible, an inner transparent layer, a bubble layer, an outer transparent layer, and a crystallization accelerator-containing layer. An outer transition layer where a bubble content decreases from the bubble layer toward the outer transparent layer is provided at a boundary between the bubble layer and the outer transparent layer, and a thickness of the outer transition layer is 0.1 mm or more and 8 mm or less.

Abstract: A stator-core fixing structure fixes a stator core to a housing. The stator-core fixing structure includes a plurality of outer peripheral surface portions, and a plurality of inner peripheral surface portions. The plurality of outer peripheral surface portions are included in an outer peripheral surface of the stator core and have outer diameters different from each other. The plurality of inner peripheral surface portions are included in an inner peripheral surface of the housing and have inner diameters different from each other. Each of the plurality of outer peripheral surface portions corresponds to a corresponding one of the plurality of inner peripheral surface portions. Each of the plurality of outer peripheral surface portions contacts the corresponding one of the plurality of inner peripheral surface portions.

Abstract: A centrifugal compressor includes a tubular shape casing extending in an axial direction, a motor stator fixed to an inside of the casing in a radial direction, a shaft disposed inside of the motor stator in the radial direction and extending in the axial direction, a motor rotor fixed to the shaft and facing the motor stator with a gap in the radial direction, a compression unit fixed to an end portion of the shaft on one side in the axial direction, a first thrust magnetic bearing disposed between the motor rotor and the impeller in the axial direction, and a second thrust magnetic bearing disposed on an other side in the axial direction relative to the motor rotor. A magnetic attraction force of the second thrust magnetic bearing toward the other side is larger than a magnetic attraction force of the first thrust magnetic bearing toward the one side.

Abstract: A quartz glass crucible (1) includes: a crucible body (10) made of silica glass; and a crystallization-accelerator-containing layer (13) formed on an outer surface of the crucible body (10). A concentration of a crystallization accelerator contained in the crystallization-accelerator-containing layer (13) is 1.0×1013 atoms/cm2 or more and 4.8×1015 atoms/cm2 or less. The quarts glass crucible is intended to be capable of not only enduring a single crystal pulling-up process that takes a very long time, such as multi-pulling, but also stably controlling the oxygen concentration and crystal diameter of a silicon single crystal by eliminating a gap between the carbon susceptor and the crucible as much as possible.

Abstract: A quartz glass crucible 1 includes: a quartz glass crucible body 10 having a cylindrical side wall portion 10a, a curved bottom portion 10b, and a corner portion 10c which has a larger curvature than that of the bottom portion 10b and connects the side wall portion 10a and the bottom portion 10b to each other; and an inner-surface coating film 13A which contains a crystallization accelerator and is formed on an inner surface 10i of the quartz glass crucible body 10, in which the inner surface 10i of the quartz glass crucible body 10 is under compressive stress. The quartz glass crucible has high durability even at a high temperature during a single crystal pull-up step and is capable of reducing a generation ratio of pinholes in a silicon single crystal.

Abstract: In an exemplary embodiment, a quartz glass crucible 1 includes: a cylindrical crucible body 10 which has a bottom and is made of quartz glass; and crystallization-accelerator-containing coating films 13A and 13B which are formed on surfaces of the crucible body 10 so as to cause crystallization-accelerator-enriched layers to be formed in the vicinity of the surfaces of the crucible body 10 by heating during a step of pulling up a silicon single crystal by a Czochralski method. The quartz glass crucible is capable of withstanding a single crystal pull-up step undertaken for a very long period of time, such as multi-pulling, and a manufacturing method thereof.

Abstract: A quartz glass crucible 1 includes: a quartz glass crucible body 10 having a cylindrical side wall portion 10a, a curved bottom portion 10b, and a corner portion 10c which has a larger curvature than that of the bottom portion 10b and connects the side wall portion 10a and the bottom portion 10b to each other; and an inner-surface coating film 13A which contains a crystallization accelerator and is formed on an inner surface 10i of the quartz glass crucible body 10, in which the inner surface 10i of the quartz glass crucible body 10 is under compressive stress. The quartz glass crucible has high durability even at a high temperature during a single crystal pull-up step and is capable of reducing a generation ratio of pinholes in a silicon single crystal.

Abstract: A turbo compressor is configured to be provided in a refrigerant circuit in which a refrigeration cycle is performed and to compress a refrigerant. The turbo compressor includes an impeller, an electric motor, a drive shaft coupled to the impeller and the electric motor, and at least one bearing holder supporting the drive shaft via a first bearing. The bearing holder includes a refrigerant passage through which a refrigerant flows, and a plurality of injection ports through which a refrigerant is injected from the refrigerant passage toward a coil end of the electric motor. The injection ports are distributed in a circumferential direction of the bearing holder.

Abstract: A bearing structure includes a drive shaft that extends in a horizontal direction, a touchdown bearing, and a bearing housing. The drive shaft is supported by a magnetic bearing. The touchdown bearing includes a rolling member interposed between an outer ring and an inner ring. The bearing housing supports the touchdown bearing from an outer periphery. At least one of an outer peripheral surface of the drive shaft, an inner peripheral surface of the inner ring, an outer peripheral surface of the outer ring, and an inner peripheral surface of the bearing housing includes a recess in a region overlapping the rolling member in a bearing radial direction.

Abstract: A single-screw compressor includes a screw rotor with a helical groove, a cylindrical wall rotatably housing the screw rotor, a gap adjuster mechanism, and a gear-shaped gate rotor having a plurality of flat gates. The gate rotor is arranged outside the wall. Some of the gates enter a space inside the wall via an opening formed in the cylindrical wall and mesh with the screw rotor. A fluid is compressed in a compression chamber defined in the helical move by the screw rotor, the gates meshing with the screw rotor, and the wall. The gap adjuster mechanism avoids contact between a front surface of the gate rotor toward the compression chamber and a sealing surface of the wall facing the front surface, by displacing at least one of the gate rotor and the sealing surface of the wall in an axial direction of the gate rotor.

Abstract: A hermetic terminal (110) includes a barrier wall (12) to be joined to a housing (11), a body (15) that is to be connected to a signal ground and is fixed to the barrier wall (12) via a first insulator (13), and a signal line (16) passing through the body (15) and fixed to the body (15) via a second insulator (14). When the barrier wall (12) is joined to the housing (11), a space (28) is formed between an inner wall of the housing (11) and a surface (31) of the body (15) intersecting an end face (29) of the body (15) positioned towards the inside of the housing (11).

Abstract: A quartz glass crucible (1) includes: a cylindrical crucible body (10) which has a bottom and is made of quartz glass; and a first crystallization-accelerator-containing coating film (13A) which is formed on an inner surface (10a) so as to cause an inner crystal layer composed of an aggregate of dome-shaped or columnar crystal grains to be formed on a surface-layer portion of the inner surface (10a) of the crucible body (10) by heating during a step of pulling up the silicon single crystal by a Czochralski method. The quartz glass crucible is intended to withstand a single crystal pull-up step undertaken for a very long period of time.

Abstract: A bearing structure includes a drive shaft that extends in a horizontal direction, a touchdown bearing, and a bearing housing. The drive shaft is supported by a magnetic bearing. The touchdown bearing includes a rolling member interposed between an outer ring and an inner ring. The bearing housing supports the touchdown bearing from an outer periphery. At least one of an outer peripheral surface of the drive shaft, an inner peripheral surface of the inner ring, an outer peripheral surface of the outer ring, and an inner peripheral surface of the bearing housing includes a recess in a region overlapping the rolling member in a bearing radial direction.

Abstract: In an exemplary embodiment, a quartz glass crucible 1 includes: a cylindrical crucible body 10 which has a bottom and is made of quartz glass; and a first crystallization-accelerator-containing coating film 13A which is formed on an inner surface 10a so as to cause an inner crystal layer composed of an aggregate of dome-shaped or columnar crystal grains to be formed on a surface-layer portion of the inner surface 10a of the crucible body 10 by heating during a step of pulling up the silicon single crystal by a Czochralski method. The quartz glass crucible is capable of withstanding a single crystal pull-up step undertaken for a very long period of time.

Abstract: [Problems to be solved] Provided is a quartz glass crucible having high durability even at a high temperature during a single crystal pull-up step and capable of reducing a generation ratio of pinholes in a silicon single crystal. [Means to solve the problems] A quartz glass crucible 1 includes: a quartz glass crucible body 10 having a cylindrical side wall portion 10a, a curved bottom portion 10b, and a corner portion 10c which has a larger curvature than that of the bottom portion 10b and connects the side wall portion 10a and the bottom portion 10b to each other; and an inner-surface coating film 13A which contains a crystallization accelerator and is formed on an inner surface 10i of the quartz glass crucible body 10, in which the inner surface 10i of the quartz glass crucible body 10 is under compressive stress.

Abstract: Provided are a quartz glass crucible capable of withstanding a single crystal pull-up step undertaken for a very long period of time, such as multi-pulling, and a manufacturing method thereof. A quartz glass crucible 1 includes: a cylindrical crucible body 10 which has a bottom and is made of quartz glass; and crystallization-accelerator-containing coating films 13A and 13B which are formed on surfaces of the crucible body 10 so as to cause crystallization-accelerator-enriched layers to be formed in the vicinity of the surfaces of the crucible body 10 by heating during a step of pulling up a silicon single crystal by a Czochralski method.