Abstract: A blower includes a motor with variable rotational speed, and a first controller. The motor has a shaft supported by a bearing with a lubricant sealed in. The first controller rotationally drives the motor. The first controller executes first control to decrease the rotational speed of the motor when a first temperature, which is the temperature of the bearing, decreases during operation in which the motor is rotated in a predetermined low rotational speed range. This air conditioner includes: an indoor unit having the blower, a temperature sensor that measures the first temperature, and a heat exchanger; and a second controller that controls the blower to perform air conditioning operation in a space to be air-conditioned in which the indoor unit is installed.

Abstract: In resin molding, potting to be conducted with a male terminal bonded to a female terminal increases costs and processes. A resin-molded stator includes a coil, a female terminal, a male terminal, and an insulator. The female terminal includes a female terminal connection portion and a spring portion. The male terminal includes a male terminal connection portion, a wire connection portion, and a second surface contact portion. The insulator accommodates the female terminal connection portion, the spring portion, and the male terminal connection portion, and electrically connects the male terminal to the female terminal. The second surface contact portion faces a second surface of the insulator wall.

Abstract: A fan device includes a motor and a control unit. The motor has a variable number of revolutions. The motor includes a shaft supported by a bearing enclosing lubricant. The control unit drives the motor. The control unit executes, when continuously driving the motor at a first number of revolutions or less for a first time period, driving the motor at a second number of revolutions more than the first number of revolutions for a second time period shorter than the first time period. The first number of revolutions causes poor oil film formation of the lubricant in the bearing if the motor is driven for more than the first time period. The second number of revolutions causes oil film formation of the lubricant in the bearing if the motor is driven for the second time period.

Abstract: A CO2 separation/recover method in cement production exhaust gas has a step of harmful component removal that removes an acidic component and a harmful component from exhaust gas discharged from a cement production facility; and a step of CO2 separation and recover that separates and recovers CO2 by bringing the exhaust gas from which the acidic component and the harmful component are removed into contact with a CO2 absorption material, so that the acidic component and the harmful component are removed before separating and recovering CO2, resulting in deterioration of the absorbing ability of the CO2 absorption material being suppressed; and the cement production exhaust gas can be appropriately disposed.

Abstract: Generating methane by adding hydrogen to CO2 in exhaust gas discharged a from cement production facility or CO2 that is separated and recovered from the exhaust gas, and using the methane as an alternative fuel to fossil fuel such as coal, petroleum, natural gas and the like, by methanation of CO2 in the exhaust gas from the cement production facility that includes exhaust gas originated from lime stone not from the fossil oil and effectively utilizing it, it is possible to reduce usage of the fossil fuel, suppress CO2 originated from energy, and improve an effect of reducing greenhouse gas.

Abstract: A motor includes a rotor molded by resin casting, and a stator disposed inside the rotor. The rotor includes a cylindrical portion in which a plurality of magnets are arranged side by side in a circumferential direction. The magnets are exposed on a side of an open end as one end of the cylindrical portion in an axial direction of the cylindrical portion. The cylindrical portion includes an inner resin located inside each of the magnets in a radial direction of the cylindrical portion. The inner resin includes a first resin portion, and a second resin portion closer to the open end than the first resin portion in the axial direction. A sectional area of the second resin portion perpendicular to the axial direction is smaller than a sectional area of the first resin portion perpendicular to the axial direction.

Abstract: In resin molding, potting to be conducted with a male terminal bonded to a female terminal increases costs and processes. A resin-molded stator includes a coil, a female terminal, a male terminal, and an insulator. The female terminal includes a female terminal connection portion and a spring portion. The male terminal includes a male terminal connection portion, a wire connection portion, and a second surface contact portion. The insulator accommodates the female terminal connection portion, the spring portion, and the male terminal connection portion, and electrically connects the male terminal to the female terminal. The second surface contact portion faces a second surface of the insulator wall.

Abstract: A motor includes a stator core having an annular shape, a coil wound around a tooth of the stator core, a first terminal electrically connected to the coil, a housing that houses the first terminal, and a second terminal at least partially inserted into the first terminal housed in the housing. The second terminal includes an electrical connecting portion inserted into the first terminal and electrically connected to the first terminal. The housing includes a first restricting portion that restricts movement, in a circumferential direction of the stator core, of a portion of the second terminal other than the electrical connecting portion.

Abstract: A stator includes a stator core having a plurality of split cores arranged in an annular shape. Each of the split cores includes a yoke portion and a tooth portion protruding from the yoke portion in a radial direction of the stator core. The yoke portions of adjoining split cores are connected to each other at joint surfaces of adjoining split cores. The joint surfaces are provided with a fitting portion that extends along an axial direction of the stator core from an upper end surface to a lower end surface of the stator core. The fitting portion is provided with a crimped portion.

Abstract: An electric motor includes a stator, a rotor having a tubular shape and disposed radially outside of the stator, and a fan mounting portion located on one side of the stator along an axial direction and mounted to the rotor. An end face of the fan mounting portion has a contact region that contacts a mounting surface of a fan, and a noncontact region that does not contact the fan.

Abstract: An electric motor includes a conductive shaft extending along an axis of rotation and passing through a back yoke to be fixed to one of a stator and a rotor. At least one bearing includes a conductive inner ring fixed to the shaft and a conductive outer ring rotatably coupled to the inner ring. A conductive bearing housing extends so as not to be located in a first area at one side with respect to the stator along an axial direction extending along the axis of rotation but to be located in a second area at the opposite side along the axis direction. The bearing housing is fixed to the outer ring of the bearing and to the other of the stator and the rotor. An electric motor is configured to be oppositely spaced from a plate electrically grounded in the axial direction.

Abstract: An electric motor includes a shaft extending along an axial direction, a stator, a rotor arranged farther away from the shaft than the stator in a radial direction of the shaft, a stator fixing part fixed to the shaft and fixed to the stator, and a rotor fixing part facing the stator fixing part and the stator with an air gap formed between in the axial direction. The rotor fixing part is rotatably coupled to the shaft and fixed to the rotor. A rotor hole is formed in the rotor fixing part. The rotor hole passes through the rotor fixing part to be communicated with the air gap. A stator hole is formed in the stator fixing part. The stator hole passes through the stator fixing part to be communicated with the rotor hole with the air gap formed between.

Abstract: A fluidized calciner is provided which allows a reduction in the rate of unburned fuel at an outlet of a fluidized calciner to enable sufficient calcination while preventing possible occlusion in a preheater, even when pulverized coal of coal or coke, which has low combustion quality, is used as fuel, based on calculations in accordance with computational fluid dynamics based on the shape of an actual furnace and operational conditions.

Abstract: The present invention provides a fluidized calciner which can perform sufficient calcination by reducing a rate of unburned fuel at an outlet of the fluidized calciner while preventing occlusion in a preheater.

Abstract: There is provided a method for operating a cement plant capable of simultaneously optimizing both combustion in a calciner and a heat consumption rate.

Abstract: An electric motor includes a stator, a rotor having a tubular shape and disposed radially outside of the stator, and a fan mounting portion located on one side of the stator along an axial direction and mounted to the rotor. An end face of the fan mounting portion has a contact region that contacts a mounting surface of a fan, and a noncontact region that does not contact the fan.

Abstract: The present invention provides a fluidized calciner which can perform sufficient calcination by reducing a rate of unburned fuel at an outlet of the fluidized calciner while preventing occlusion in a preheater.

Abstract: A method for controlling an NOx concentration in an exhaust gas in a combustion facility by: measuring a reaction velocity ki of each of a plurality of chars, each corresponding to a plurality of types of pulverized coals; determining a relationship between the NOx concentration in the exhaust gas and the reaction velocity ki for each of the chars; (iii) blending the plurality of the types of the pulverized coal, wherein a blending ratio of the plurality of the types of the pulverized coal is determined by using, as an index, a reaction velocity kblend of the char of the blended pulverized coal, which corresponds to a target NOx concentration or below, on the basis of the relationship; and supplying the blended pulverized coal to the combustion facility as the fuel of the combustion facility.

Abstract: Providing a cement production apparatus in which raw material is supplied into a duct with being dispersed uniformly so that heat-exchanging efficiency is improved by even preheating and clogging and the like are prevented, so that stable operation can be carried out.

Abstract: An electric motor includes a shaft extending along an axial direction and having conductivity, a plurality of bearings, a bearing housing, a stator arranged so as not to be located between the shaft and the bearing housing, and a rotor arranged so as not to be located between the shaft and the bearing housing. The bearings are axially spaced, with each including a conductive inner ring fixed to and in contact with the shaft, and a conductive outer ring rotatable relative to the inner ring. The bearing housing has a tubular shape surrounding the shaft and contacting at least two outer rings of the bearings. The rotor faces the stator and is coupled to the stator with the shaft, the bearings, and the bearing housing between the stator and the rotor so as to rotate relative to the stator.