Abstract: In a heat exchanger, an outer diameter of a plurality of heat transfer pipes is defined as Do, a wall thickness is defined as tP, an area represented by a numerical expression of a row pitch L1×a step pitch L2 is defined as A, and an area represented by a numerical expression of ((Do?2×tP)/2)2×? is defined as B, a relation of Do<5.5 mm, a relation of (0.2076×tP2?0.1480×tP+0.0545)×Do{circumflex over (?)}(?0.0021×tP2?0.0528×tP+0.0164)?B/A?(0.0219×tP2?0.0185×tP+0.0043)×ln (Do)+(1.6950×tP2+1.8455×tP+1.5416), and a relation of B/A<0.0076×tP2?0.0417×tP+0.0574 are satisfied.

Abstract: A heat exchanger includes: a first heat exchanger configured to transfer heat between air and refrigerant; and a second heat exchanger provided in series with the first heat exchanger in a first direction that is a flow direction of the air, and configured to transfer heat between the air and the refrigerant. The first heat exchanger includes first heat transfer tubes through which the refrigerant flows, which are spaced apart from each other in a second direction intersecting the first direction, and each of which has a tube axis extending in a third direction intersecting the first and second directions. The second heat exchanger includes: second heat transfer tubes though which the refrigerant flows, which are spaced apart from each other in the second direction, and each of which has a tube axis extending in the third direction; and a corrugated fin provided between the second heat transfer tubes.

Abstract: An outdoor heat exchanger includes: a group of windward flat tubes, a group of leeward flat tubes and a distributor. When the outdoor heat exchanger acts as an evaporator, the refrigerant flows through the plurality of second flat tubes, the plurality of fourth flat tubes, the plurality of third flat tubes, and the plurality of first flat tubes in this order, and when the outdoor heat exchanger acts as a condenser, the refrigerant flows through the plurality of first flat tubes, the plurality of third flat tubes, the plurality of fourth flat tubes, and the plurality of second flat tubes in this order.

Abstract: A power transmission apparatus includes a controller that controls a power transmitter that performs wireless power transmission. The controller is configured to: cause the processor to: cause the power transmitter to emit a first power transmission beam for which a first power is set; acquire feedback information on a result of reception of the first power transmission beam in a power reception apparatus; identify a power receiving capability in the power reception apparatus; and determine, with reference to the power receiving capability and the reception result, a second power which is usable in wireless power supply for the power reception apparatus and which is larger than the first power. The power receiving capability includes a maximum value of an input power range of the power reception apparatus. The wireless power transmission uses an electromagnetic wave having a frequency equal to or higher than that of a microwave.

Abstract: A flat heat transfer tube in an outdoor heat exchanger includes a main body and a connecting portion. The flat heat transfer tube has a plurality of flow paths spaced from each other. The flat heat transfer tube has a first side portion and a second side portion spaced from each other by a width. The connecting portion connected to an opening of a header has an opening end face in which each of the flow paths opens. In the connecting portion, the first side portion is tapered toward the opening end face to be reduced in width. A first opening end of a first flow path located closest to the first side portion has a second flow path cross-sectional area smaller than a first flow path cross-sectional area of an opening end of each of other flow paths.

Abstract: An outdoor heat exchanger includes a first heat exchange module and a second heat exchange module, as heat exchange modules each including a plurality of heat transfer tubes and a securing connector that holds the heat transfer tubes. The securing connector has a holder plate holding one end of each of the heat transfer tubes, and a pair of side plates extending from the holder plate away from the heat transfer tubes. The pair of side plates of the securing connector of the first heat exchange module is joined to the pair of side plates of the securing connector of the second heat exchange module. The securing connectors of both of the first heat exchange module and the second heat exchange module define a space, and the heat transfer tubes of each of the first heat exchange module and the second heat exchange module communicate with the space.

Abstract: A heat exchanger includes: a heat exchange portion in which a plurality of heat transfer tubes, in which refrigerant flows, are arranged in a height direction and grouped into, in order from an upper side in the height direction, a main, first auxiliary and second auxiliary heat exchange portion and configured to, when the heat exchanger serves as a condenser, allow the refrigerant to flow through the heat exchanger in order of the main heat exchange portion of the airflow downstream side row, the main heat exchange portion of the airflow upstream side row, the first auxiliary heat exchange portion of the airflow upstream side row, the first auxiliary heat exchange portion of the airflow downstream side row, the second auxiliary heat exchange portion of the airflow downstream side row, and the second auxiliary heat exchange portion of the airflow upstream side row, and flow out of the heat exchanger.

Abstract: A heat exchanger includes a first header, a second header and a plurality of heat transfer components, wherein the heat transfer components each includes a heat transfer tube extending from the first header to the second header and allowing refrigerant to flow in its inside, and an extension portion being provided in each of the heat transfer tubes and configured to promote heat transfer property of the heat transfer tubes, and wherein the extension portion includes a base portion extending from the heat transfer tube in a second direction in which air that flows between the plurality of heat transfer tubes flows, and a spacer portion extending from the base portion in the first direction and abutting the adjacent heat transfer component.

Abstract: In a heat exchanger, an outer diameter of a plurality of heat transfer pipes is defined as Do, a wall thickness is defined as tP, an area represented by a numerical expression of a row pitch L1×a step pitch L2 is defined as A, and an area represented by a numerical expression of ((Do?2×tP)/2)2×? is defined as B, a relation of Do<5.5 mm, a relation of (0.0219×tP2?0.0185×tP+0.0043)×ln(Do)+(1.6950×tP2+1.8455×tP+1.5416)?B/A?(0.2076×tP2?0.1480×tP+0.0545)×Do{circumflex over (?)}(?0.0021×tP2?0.0528×tP+0.0164), and a relation of B/A<0.0076×tP2?0.0417×tP+0.0574 are satisfied.

Abstract: An outdoor unit includes a casing including an air passage, an outdoor fan disposed in the air passage, a compressor disposed in the casing, an outdoor heat exchanger disposed in the casing and including fins and a heat transfer tube connected to the fins, a control board disposed in the casing and including a control unit that controls the compressor, and a heat sink disposed in the air passage in the casing and being in contact with the control board. The heat transfer tube of the outdoor heat exchanger includes a first region in which gas refrigerant or two-phase gas-liquid refrigerant flows when the outdoor heat exchanger is used as a condenser and a second region that is located downstream of the first region in a refrigerant flow direction and in which single-phase liquid refrigerant flows.

Abstract: An object is to provide a refrigeration cycle apparatus capable of reducing freezing in a lower part of a heat exchanger in which drainage water tends to accumulate and reducing an amount of refrigerant in a refrigerant circuit. The refrigeration cycle apparatus includes the refrigerant circuit 1 connecting, by refrigerant pipes, a compressor, a first expansion device, and a first heat exchanger configured to serve as evaporator during heating operation. The first heat exchanger is provided with a first heat exchange unit and a second heat exchange unit connected to the first heat exchange unit in series in the refrigerant circuit. The first expansion device is connected in parallel with the second heat exchange unit in the refrigerant circuit, and the second heat exchange unit is placed at a position lower than a position of the first heat exchange unit.

Abstract: An outdoor unit includes a casing including an air passage, an outdoor fan disposed in the air passage, a compressor disposed in the casing, an outdoor heat exchanger disposed in the casing and including fins and a heat transfer tube connected to the fins, a control board disposed in the casing and including a control unit that controls the compressor, and a heat sink disposed in the air passage in the casing and being in contact with the control board. The heat transfer tube of the outdoor heat exchanger includes a first region in which gas refrigerant or two-phase gas-liquid refrigerant flows when the outdoor heat exchanger is used as a condenser and a second region that is located downstream of the first region in a refrigerant flow direction and in which single-phase liquid refrigerant flows.

Abstract: The present invention pertains to the diagnosis of coronary artery disease. Specifically, the present invention pertains to the diagnosis of coronary artery disease using phosphatidylinositol (36:5) or lysophosphatidylinositol (20:5) as a molecular marker.

Abstract: Disclosed is a display apparatus including: a display panel; a light source unit; an optical sheet arranged between the display panel and the light source unit; and a housing configured to accommodate the display panel, the light source unit, and the optical sheet, wherein one side in a vertical direction and one side in a horizontal direction among four sides of the optical sheet are support sides held by inside walls of the housing, gaps are provided between the other sides and the inside walls of the housing, the optical sheet has a hole portion near the support sides, and the housing has a positioning portion that engages with the hole portion and restricts movement of the optical sheet in directions perpendicular to the inside walls while allowing deformation of the optical sheet in directions parallel to the support sides.

Abstract: An image display apparatus according to the present invention includes: a display unit configured to display an image on a screen; a calculation unit configured to calculate, based on input image data, an amount of light of a predetermined color emitted from the screen in a case where an image based on the input image data is displayed on the screen; and a notification unit configured to perform predetermined notification, based on the amount of light calculated by the calculation unit.

Abstract: A display apparatus includes: a display unit configured to display an image; a light emission unit configured to individually control light emission for each of a plurality of divided regions; an acquisition unit configured to acquire, for each divided region, a characteristic value of the image displayed on each of the divided regions; and a control unit. The control unit controls light emission of the light emission unit such that: in a moving image region, in which only a moving image is displayed, among the plurality of divided regions, light is emitted at a brightness based on a characteristic value of the moving image region; and in a mixed region, in which both of the moving image and a still image are displayed, among the plurality of divided regions, light is emitted at predetermined brightness.

Abstract: There is provided an image display apparatus that configures, together with another image display apparatus, a multi-screen display system. The image display apparatus includes a light emitting unit, an acquiring unit configured to acquire information concerning light emission brightness of the light emitting unit of the image display apparatus and the other image display apparatus, and a correcting unit configured to correct, on the basis of the information acquired by the acquiring unit, at least one of the light emission brightness of the light emitting unit of the image display apparatus and the other image display apparatus to thereby determine the light emission brightnesses of the light emitting units of the image display apparatus and the other image display apparatus.

Abstract: An image display apparatus according to the present invention includes: a display unit configured to display an image on a screen; a calculation unit configured to calculate, based on input image data, an amount of light of a predetermined color emitted from the screen in a case where an image based on the input image data is displayed on the screen; and a notification unit configured to perform predetermined notification, based on the amount of light calculated by the calculation unit.