Abstract: A management device 21 comprising a main control part 23 that, during charging of a plurality of power storage elements 41 connected in series, outputs a first pull-down signal to a converter 11 so as to lower a charging voltage when the cell voltage of any of the power storage elements 41 is equal to or greater than a first threshold value.

Abstract: An axial flow fan includes a hub driven to rotate and configured to serve as a rotation axis of the axial flow fan and a blade connected to the hub. The blade has a leading edge and a trailing edge. The trailing edge has an indentation indenting toward the leading edge. The indentation narrows from the trailing edge to the leading edge, and has an apex being a point closest to the leading edge from among the points constituting the indentation. The blade has, at the indentation, a maximum thickness portion at which a thickness of the blade is maximum, and which is positioned radially inside of the apex.

Abstract: A centrifugal blower having high efficiency and reduced noise is provided. A centrifugal blower to be accommodated in a housing having an air inlet includes a spiral casing having a bell mouth and a centrifugal fan housed in the casing. The bell mouth includes a first region and a second region. The first region is disposed closest to the air inlet. A distance from a rotational axis of the centrifugal fan to a downstream end in the first region is greater than a distance from the rotational axis to the downstream end in the second region. A curvature of a surface of the first region in a cross section including the rotational axis is smaller than a curvature of a surface of the second region in a cross section including the rotational axis.

Abstract: A substrate liquid treatment apparatus includes an inner tank configured to store a treatment liquid and having an upper opening, an outer tank disposed outside the inner tank, and a lid movable between a close position for closing the upper opening of the inner tank and an open position for opening the upper opening of the inner tank. The lid includes a main portion that covers the upper opening of the inner tank when the lid is positioned at the close position, and a splash shielding portion connected to the main portion. When the lid is positioned at the close position, the splash shielding portion extends from a position higher than an upper end of a side wall of the inner tank adjacent to the splash shielding portion to a position which is lower than the upper end of the side wall and which is on the outer tank side of the side wall.

Abstract: A honeycomb structure includes an incoming end having a concave shape; an outgoing end having a convex shape; and a plurality of cells each having a polygonal cross section and serving as a channel for a fluid, the channel extending from the incoming end to the outgoing end. The plurality of cells are separated from each other by separator walls. At least one of the plurality of cells has an area of a channel cross section perpendicular to a longitudinal direction, the area increasing from the incoming end toward the outgoing end.

Abstract: An indoor unit according to the present invention includes: an air-sending portion, which includes a casing having a rectangular air outlet and accommodating an impeller including a plurality of blades; a heat exchanger, which is configured to exchange heat with gas sent from the air-sending portion; and a guide portion, which includes an upper guide defining a passage for the gas and being arranged between an upper edge portion of the air outlet and an upper end portion of the heat exchanger and a lower guide defining a passage for the gas and being arranged between a lower edge portion of the air outlet and a lower end portion of the heat exchanger, and is open at side regions of the guide portion.

Abstract: An electric blower includes: an electric motor portion including a rotation shaft; a centrifugal impeller; and a heat dissipating portion connecting the centrifugal impeller and the rotation shaft. A boss portion of the centrifugal impeller is provided with a first hole extending in an extending direction of the rotation shaft. The heat dissipating portion includes a first portion connected to an inner circumferential surface of the first hole, and a second portion connected to the first portion in the extending direction and located outside the first hole. A length of the heat dissipating portion in the extending direction is longer than a length of the first hole in the extending direction.

Abstract: An outdoor unit for an air-conditioning apparatus includes a casing having an air inlet through which air enters the casing, an air-sending device disposed in the casing and configured to create a flow of air passing through the air inlet, a heat exchanger disposed between the casing and the air-sending device and exposed through the air inlet and including a plurality of fins spaced apart from each other, and a partition disposed in the casing and dividing a space in the casing into an air-sending device chamber containing the heat exchanger and the air-sending device and a machine chamber containing a compressor. The plurality of fins include an end fin group located at an end remote from the partition. The casing includes a wall having at least one vent that faces the end fin group and that is located along a side edge part defining an edge of the air inlet.

Abstract: This piezoelectric element includes a lower electrode formed on a substrate, a piezoelectric layer formed on the lower electrode, and an upper electrode formed on the piezoelectric layer. The upper electrode includes a first upper electrode layer made of a metal oxide including an amorphous portion at least at a boundary with the piezoelectric layer and a second upper electrode layer formed on the first upper electrode layer.

Abstract: A propeller fan according to an embodiment of the present invention includes a shaft provided a rotation axis of the propeller fan, and a blade provided on an outer peripheral side of the shaft. The blade has a trailing edge on a rear side of the blade in a rotation direction of the propeller fan. The trailing edge includes a first trailing edge located on an innermost side of the trailing edge, and a second trailing edge adjacent to and outward of the first trailing edge. Where an innermost point of the first trailing edge is a first connection point, a connection point between the first trailing edge and the second trailing edge is a second connection point, and a straight line that extends through the rotation axis and the first connection point is a reference line, the second connection point is located forward of the reference line in the rotation direction, or located on the reference line, and the second trailing edge is located rearward of the second connection point in the rotation direction.

Abstract: A propeller fan includes a cylindrical shaft portion provided on a rotation axis of the propeller fan; a plurality of blades provided on an outer peripheral side of the shaft portion; a connection portion provided adjacent to the shaft portion and connecting two of the plurality of blades that are adjacent to each other in a circumferential direction of the propeller fan; a first rib provided on at least one of a pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on a downstream side in the flow of air, and a second rib provided on at least one of a negative-pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on an upstream side in the flow of air.

Abstract: This cooling device for an amphibious vehicle includes: a heat exchanger mounted in the amphibious vehicle; a coolant introduction passage through which cooling air or cooling water can be introduced from the outside to the heat exchanger as a coolant; a cooling air discharge passage through which the cooling air having passed through the heat exchanger can be discharged to a cooling air discharge portion communicating with the outside; and a cooling water discharge passage through which the cooling water having passed through the heat exchanger can be discharged to a cooling water discharge portion communicating with the outside. The cooling air discharge passage and the cooling water discharge passage are formed such that at least the cooling air discharge portion and the cooling water discharge portion are independent of each other.

Abstract: An impeller includes a boss provided on a rotation axis and a blade provided on an outer circumferential side of the boss. The blade has a radially middle portion that is located midway between an outer circumferential edge and an inner circumferential edge in a radial direction of the blade from the rotation axis. A span-direction section of part of the blade that adjoins the leading edge is shaped such that part of a suction side of the blade that is located in an area between the radially middle portion and the outer circumferential edge is concave, and a span-direction section of part of the blade that adjoins the trailing edge is shaped such that part of the suction side of the blade that is located in the area between the radially middle portion and the outer circumferential edge is convex.

Abstract: A propeller fan includes a shaft disposed on a rotation axis and a blade disposed adjacent to an outer circumferential surface of the shaft. The blade has a leading edge and a trailing edge. At least one of the leading edge and the trailing edge has a notch. The notch includes a pair of side edge-parts forming an acute included angle and bottom edge-part located between the pair of side edge-parts. The bottom edge-part includes at least one protrusion having an obtuse included angle.

Abstract: A phosphor wheel of exemplary embodiment in the present disclosure includes a substrate, a phosphor region circularly provided on one surface of the substrate, a light processing region circularly provided on an other surface of the substrate and entered by incident light, a light processing body provided in the light processing region, a light-transmissive region provided in the substrate, and a drive device rotating the substrate.

Abstract: This accelerometer (100) includes a substrate (30) and a bonding member (90) that bonds the substrate (30) and a supporting member (50) to each other, and the bonding member (90) is arranged in a region (R3) that straddles a first region (R1) in which a first sensor element (11) is arranged and a second region (R2) in which a second sensor element (12) is arranged in a plan view.

Abstract: An air conditioner has a casing and a wind direction changing device. The casing has an air inlet, an air outlet, an outer air path wall, and an inner air path wall. The wind direction changing device has an up-down rotation shaft and a deflector. The deflector extends from the up-down rotation shaft toward the outer air path wall. The deflector has an outer air path wall-side end which faces the outer air path wall and has a first arc shape.

Abstract: A phosphor wheel device includes a motor having a rotation shaft, a phosphor wheel substrate attached to one end side of the rotation shaft, and a first balancer fixed to the phosphor wheel substrate. The first balancer has at least one opening that is opened to an outside of the phosphor wheel device.

Abstract: This cooling device for an amphibious vehicle includes: a heat exchanger mounted in the amphibious vehicle; a coolant introduction passage through which cooling air or cooling water can be introduced from the outside to the heat exchanger as a coolant; a cooling air discharge passage through which the cooling air having passed through the heat exchanger can be discharged to a cooling air discharge portion communicating with the outside; and a cooling water discharge passage through which the cooling water having passed through the heat exchanger can be discharged to a cooling water discharge portion communicating with the outside. The cooling air discharge passage and the cooling water discharge passage are formed such that at least the cooling air discharge portion and the cooling water discharge portion are independent of each other.

Abstract: A wavelength conversion element includes a first phosphor region and a second phosphor region. The second phosphor region is disposed in a thickness direction of the first phosphor region and has a phosphor particle with a particle size different from a particle size of a phosphor particle positioned in the first phosphor region.