Abstract: A fan includes an impeller including a boss serving as a center of rotation and a plurality of blades provided on an outer circumferential surface of the boss, and a structure member installed on an upstream side of the impeller in an airflow direction. The plurality of blades each have a plurality of recesses disposed only on a side of a suction surface of a leading edge. The plurality of recesses each have a rectangular shape having two longitudinal sides. Consequently, it is possible to reduce fluctuations of lift on the plurality of blades and thereby reduce discrete frequency noise.

Abstract: A laminated coil component is configured by laminating a plurality of magnetic layers and a plurality of coil conductors in a lamination direction. In a cross-section taken along a width direction of the coil conductors, each coil conductor has a first surface on one side in the lamination direction, a second surface on another side in the lamination direction, and side surfaces on both sides in the width direction. The second surface makes contact with the magnetic layer. A hollow cavity portion is formed between the magnetic layer, and the first surface and both side surfaces. The hollow cavity portion has a first extended portion, extending outward in a direction intersecting with the lamination direction, on the first surface side, on at least one of both end sides in the width direction.

Abstract: An indoor unit includes, in an airflow path, an axial fan, an indoor heat exchanger having a W-shape in side view, and a forward drain pan and a rearward drain each disposed below the corresponding valley portion of the indoor heat exchanger. The airflow path is divided into a first airflow path, a second airflow path, and a third airflow path. The indoor unit includes an up/down airflow direction flap disposed at the air outlet. The up/down airflow direction flap includes a rearward up/down airflow direction flap disposed under the second airflow path and the third airflow path, and a forward up/down airflow direction flap disposed forward of the rearward up/down airflow direction flap and under the first airflow path.

Abstract: A fan includes an impeller including a boss that is a rotation center, and a plurality of blades that are provided on an outer peripheral surface of the boss; a motor and a motor fixing portion rotationally driving the impeller; a housing accommodating the impeller; a plurality of stationary blades disposed downstream of the impeller and connecting the motor fixing and the housing; and a connecting portion disposed between the housing and a rotation axis of the impeller, and extending in a rotation direction of the impeller and connecting the plurality of stationary blades. The connecting portion has a recessed portion for passing wind that flows in a radial direction of the impeller.

Abstract: A housing cover provided on a housing section of an indoor unit of an air conditioning apparatus, the indoor unit including a casing, and the housing section provided on a bottom portion of the casing and having a remote control receiving section for receiving an infrared signal from a remote control and a temperature detection sensor for contactlessly detecting a surface temperature of an object in a room, the housing cover comprising a light transmissive surface inclined diagonally downward from a front and a sensor opening port formed behind the light transmissive surface, wherein the light transmissive surface is formed in front of the remote control receiving section to be opposed to and be parallel to the remote control receiving section, and the sensor opening port is formed such that the temperature detection sensor protrudes from the opening port.

Abstract: Provided is an indoor unit for an air-conditioning apparatus including: a sensor box accommodating a sensor configured to detect light; a gearbox configured to hold the sensor box so as to be rotatable, and to be moved along a first axis together with the sensor box; a first motor configured to apply a force causing the sensor box to rotate; a second motor configured to apply a force causing the gearbox to move along the first axis; and a shaft inserted through the gearbox to be rotated by receiving the force from the first motor, in which, in the gearbox, the shaft is inserted, and the gear is accommodated so that a rotational force transmitted from the shaft is transmitted to the sensor box, the gear being movable along the first axis.

Abstract: An air-conditioning apparatus indoor unit includes: a plastic design panel that includes a front panel part having a rectangular shape in front view and a flange part projecting toward a back surface from one longitudinal edge of the front panel part; and a reinforcement member that has a shape extending in the longitudinal direction of the front panel part across a middle part of the design panel and is fixed to the design panel so as to be in contact with a back surface of the front panel part and an inner surface of the flange part.

Abstract: In an indoor unit for an air-conditioning apparatus, a filter, a cleaning mechanism configured to clean the filter, and a dust box are provided to an air inlet. Further, the dust box is provided so as to be freely mountable into and dismountable from a casing in a fore-and-aft direction.

Abstract: An indoor unit includes axial-flow fans, which are provided on downstream of an air inlet. Further, a plurality of first bars are provided to the air inlet. In plan view, leading edge portions of blades of the axial-flow fan are inclined in a direction of rotation of the axial-flow fan from a rotary shaft side of the axial-flow fan to an outer peripheral side. Further, in plan view, the plurality of the first bars are inclined in a direction opposite to the direction of rotation of the axial-flow fan from the rotary shaft side of the axial-flow fan to the outer peripheral side.

Abstract: An indoor unit for an air-conditioning apparatus includes a plurality of axial-flow fans arranged side by side in a horizontal direction below an air inlet. Further, the indoor unit includes a plurality of filters provided to the air inlet so as to be arranged side by side. A cleaning mechanism and a dust box are further provided to the air inlet. Further, the dust box is arranged at a position between adjacent filters and adjacent axial-flow fans.

Abstract: A laminated coil component is configured by laminating a plurality of magnetic layers and a plurality of coil conductors in a lamination direction. In a cross-section taken along a width direction of the coil conductors, each coil conductor has a first surface on one side in the lamination direction, a second surface on another side in the lamination direction, and side surfaces on both sides in the width direction. The second surface makes contact with the magnetic layer. A hollow cavity portion is formed between the magnetic layer, and the first surface and both side surfaces. The hollow cavity portion has a first extended portion, extending outward in a direction intersecting with the lamination direction, on the first surface side, on at least one of both end sides in the width direction.

Abstract: An indoor unit of an air-conditioning apparatus includes a fan unit having an axial fan and a motor that drives the axial fan. The indoor unit also includes a pair of support arms on a back plate constituting a back surface of a casing. The fan unit is supported by the pair of support arms from the below.

Abstract: An indoor unit for an air-conditioning apparatus includes a cartridge provided to an air inlet so as to be freely mountable and dismountable. The cartridge accommodates a filter so as to be freely movable in a right-and-left direction and has an opening port formed in one end portion in the right-and-left direction. A dust box is provided on a side of the end portion of the cartridge. The dust box includes a cleaning mechanism configured to clean the filter and a dust collecting portion configured to collect dust.

Abstract: In an indoor unit for an air-conditioning apparatus, a downstream edge of each of the blades of the fan of an air-blowing device, when viewed in plan view, intersects any of the members of a motor stay of the air-blowing device irrespective of an angle of rotation of the fan. The motor stays are connected to the mounting portions of a bellmouth in which the fan is disposed, wherein the mounting portions protrude downward from a downstream outlet end of the bellmouth and each include side surfaces, of which at least a first side surface opposing a pressure surface of each of the blades of the fan is at an angle relative to a rotation axis of the fan.

Abstract: A heat exchanger includes a plurality of bent parts where a direction of slope of the heat exchanger changes from an upward direction to a downward direction or from a downward direction to an upward direction. The plurality of bent parts is provided on each of a side of an air inlet and a side of an air outlet. The heat exchanger is provided such that all of the plurality of bent parts is visible when the heat exchanger is seen from a front side of a casing. Drain pans are provided below each of the plurality of bent parts that are on the side of the air outlet.

Abstract: A concentration measuring device with which the concentration measurement of a test substance can be facilitated as compared to a conventional technique is provided. The concentration measuring device includes: first to third pipes together forming a circulation path through which a gas can circulate; a pump for flowing the gas in a circulating direction in the circulation path; a sample disposed in the circulation path; and a concentration measuring mechanism for measuring a concentration of a target substance from the sample in the circulation path. The concentration measuring mechanism includes, for example, a sample heater, a catalyst, a catalyst heater, a detection chamber, a concentration sensor, and a control unit.

Abstract: An indoor unit for an air-conditioning apparatus includes a heat exchanger and an air-blowing device disposed upstream of the heat exchanger. The air-blowing device of the indoor unit includes a casing, a bellmouth disposed to an air inlet of the casing, a fan of one of an axial-flow type and a diagonal-flow type disposed within the bellmouth, a motor for rotating the fan, a motor base holding the motor, and a motor stay connecting the motor base to the bellmouth. The fan includes blades. The motor stay includes rod-shaped members. The motor stay of the air-blowing device is configured such that, in plan view, a downstream edge of each blade of the fan intersects any of the rod-shaped members of the motor stay irrespective of the angle of rotation of the fan.

Abstract: A non-volatile semiconductor device includes: memory strings formed by series connection of memory cells respectively connected to word lines, wherein each memory string is connected between a bit line and a source line via first and second select gate transistors; and a control circuit controlling the first and second select gate transistors, such that when voltage of the word line is raised to a predetermined value for data readout from the memory cell, a first status where the first select gate transistor is turned on and the second select gate transistor is turned off and second status where the first select gate transistor is turned off and the second select gate transistor is turned on are generated alternately.

Abstract: A concentration measuring device with which the concentration measurement of a test substance can be facilitated as compared to a conventional technique is provided. The concentration measuring device includes: first to third pipes together forming a circulation path through which a gas can circulate; a pump for flowing the gas in a circulating direction in the circulation path; a sample disposed in the circulation path; and a concentration measuring mechanism for measuring a concentration of a target substance from the sample in the circulation path. The concentration measuring mechanism includes, for example, a sample heater, a catalyst, a catalyst heater, a detection chamber, a concentration sensor, and a control unit.

Abstract: A non-volatile semiconductor device includes: memory strings formed by series connection of memory cells respectively connected to word lines, wherein each memory string is connected between a bit line and a source line via first and second select gate transistors; and a control circuit controlling the first and second select gate transistors, such that when voltage of the word line is raised to a predetermined value for data readout from the memory cell, a first status where the first select gate transistor is turned on and the second select gate transistor is turned off and second status where the first select gate transistor is turned off and the second select gate transistor is turned on are generated alternately.