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1.发明授权公开(公告)号：US11168948B2
公开(公告)日：2021-11-09
申请号：US16332390
申请日：2016-11-28
发明人： Yuki Ugajin , Yusuke Adachi , Hiroaki Makino , Hiroshi Omura
摘要： A heat exchanger includes a plurality of plate-shaped fins disposed at intervals, and a plurality of heat transfer tubes disposed to be inserted into through holes of the fins in a direction perpendicular to the fins. In each of the fins, a starting hole is formed between adjacent through holes, and the starting hole serves as a start point of bending of the fins and has a vertex portion at a bending portion of each fin which is close to an edge thereof. In each of the fins, a cut is made to connect the other edge of the fin and a side of the starting hole which is located opposite to the vertex portion of the starting hole. The above each fin is bent at the vertex portion of the starting hole, by opening the cut from the starting hole.
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公开(公告)号：USD725252S1
公开(公告)日：2015-03-24
申请号：US29480622
申请日：2014-01-28
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公开(公告)号：US11959648B2
公开(公告)日：2024-04-16
申请号：US17426409
申请日：2019-04-03
发明人： Hirotaka Ishida , Hiroaki Makino
摘要： A heat exchanger includes a plurality of fins and a plurality of tubes that are inserted into the fins and that allow refrigerant to flow in the tubes. The tubes include first heat transfer tubes and second heat transfer tubes. Each of the first heat transfer tubes includes grooves formed in an inner surface of the first heat transfer tube, and has an inside diameter Da and a groove depth Ta. Each of the second heat transfer tubes has an inner surface smoothed, has an inside diameter Db, and is connected to an associated one of the first heat transfer tubes. Da−2×Ta≤Db is satisfied.
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公开(公告)号：USD800890S1
公开(公告)日：2017-10-24
申请号：US29588725
申请日：2016-12-22
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公开(公告)号：USD800889S1
公开(公告)日：2017-10-24
申请号：US29588692
申请日：2016-12-22
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公开(公告)号：US09605686B2
公开(公告)日：2017-03-28
申请号：US14447977
申请日：2014-07-31
发明人： Shingo Hamada , Seiji Nakashima , Takashi Ikeda , Takahide Tadokoro , Takuya Kodama , Takashi Kobayashi , Hiroshi Yoshikawa , Hiroaki Makino
CPC分类号： F04D29/384 , F04D19/002 , F04D29/386 , F05D2240/303 , F05D2240/304 , F05D2240/307 , F24F1/06 , F24F1/38
摘要： A leading edge of a blade has a first curved portion provided with a leading-edge rearmost point, and a trailing edge of the blade has a second curved portion located on the inner circumferential side of the trailing edge and a third curved portion located on the outer circumferential side of the blade on the trailing edge. The third curved portion has a trailing-edge foremost point, and the second curved portion has a trailing-edge rearmost point. The trailing edge and a first concentric circle, which is one of concentric circles having as their center an axis of rotation and passes through the leading-edge rearmost point, intersect each other at a first intersection. The first intersection is located between the trailing-edge rearmost point and the trailing-edge foremost point.
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公开(公告)号：US20150247660A1
公开(公告)日：2015-09-03
申请号：US14431402
申请日：2013-06-20
CPC分类号： F25B49/02 , F24F11/30 , F24F11/80 , F24F11/83 , F24F2110/10 , F24F2110/12 , F24F2140/12 , F24F2140/20 , F25B13/00 , F25B30/02 , F25B41/062 , F25B49/027 , F25B2313/02741 , F25B2313/0314 , F25B2313/0315 , F25B2341/063 , F25B2600/2513 , F25B2700/171 , F25B2700/1931 , F25B2700/1933 , F25B2700/2106 , F25B2700/21151 , F25B2700/21152
摘要： An apparatus includes a refrigerant circuit in which a compressor that compresses a refrigerant, an indoor-side heat exchanger serving as a radiator that exchanges heat between the refrigerant and a heating target, an expansion valve that decompresses the refrigerant by opening-degree adjustment, and an outdoor-side heat exchanger serving as an evaporator that exchanges heat between a heat-exchange target and the refrigerant are connected by pipes. The apparatus includes: an outdoor air temperature sensor that detects a temperature of outdoor air serving as the heat-exchange target; a discharge-side temperature sensor that detects a discharge temperature of the refrigerant discharged by the compressor; and a controller that, when the controller determines that a rotation speed of the compressor is a maximum and the temperature of the heat-exchange target is lower than a preset temperature, controls an opening degree of the expansion valve by using the discharge temperature.
摘要翻译： 一种装置包括制冷剂回路，其中压缩制冷剂的压缩机，用作在制冷剂和加热对象物之间进行热交换的散热器的室内侧热交换器，通过开度调节对制冷剂进行减压的膨胀阀，以及 作为在热交换对象和制冷剂之间进行热交换的蒸发器的室外侧热交换器通过管连接。 该装置包括：室外空气温度传感器，其检测作为热交换对象的室外空气的温度; 排出侧温度传感器，其检测由压缩机排出的制冷剂的排出温度; 以及控制器，当所述控制器判断出所述压缩机的转速为最大且所述热交换对象的温度低于预设温度时，通过使用所述排出温度来控制所述膨胀阀的开度。
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公开(公告)号：US12085316B2
公开(公告)日：2024-09-10
申请号：US17801299
申请日：2020-05-20
发明人： Tatsuya Yokogi , Hiroaki Makino
IPC分类号： F25B31/00 , C09K5/04 , C10M107/34 , C10M171/00 , C10N40/30 , F24F11/86
CPC分类号： F25B31/002 , C09K5/042 , C10M107/34 , C10M171/008 , F24F11/86 , C09K2205/12 , C10M2209/1013 , C10N2040/30
摘要： In a refrigeration and air-conditioning apparatus, an inner diameter of an upward-flow pipe is defined as an inner pipe diameter, where a spherical droplet of refrigerating machine oil with a diameter equal to the inner pipe diameter is defined as a spherical refrigerating machine oil droplet, and where a force received by the spherical refrigerating machine oil droplet from refrigerant in liquid form flowing upward through the upward-flow pipe is defined as a fluid force, the refrigerant in liquid form flows upward through the upward-flow pipe at such a speed that the fluid force is greater than a gravitational force applied to the spherical refrigerating machine oil droplet.
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公开(公告)号：US11378286B2
公开(公告)日：2022-07-05
申请号：US16499469
申请日：2017-06-12
摘要： 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.
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公开(公告)号：US10274219B2
公开(公告)日：2019-04-30
申请号：US15536207
申请日：2016-03-25
发明人： Hiroaki Makino , Kouji Yamaguchi , Tetsuya Tazawa
IPC分类号： F24F11/36 , F24F11/77 , F24F11/89 , F24F13/20 , F24F11/30 , F24F1/0007 , F24F110/50 , F24F140/20 , F24F1/00
摘要： When a controller determines that a leakage of refrigerant occurs, the controller executes a control of rotating an air-sending fan at high rotation speed. After the control, the controller executes a control of stopping rotation of the air-sending fan or reducing a rotation speed of the air-sending fan in accordance with a result of detection by a first refrigerant sensor provided in a lower portion of a heat exchanger chamber. Thus, the air-sending fan is prevented from continuing the rotation at high rotation speed. Therefore, an indoor unit for an air-conditioning apparatus is excellent in safety and is capable of avoiding feeling of discomfort of a user due to the high-speed rotation of the air-sending fan.
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