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公开(公告)号：US20240060722A1
公开(公告)日：2024-02-22
申请号：US18259445
申请日：2021-02-26
发明人： Akira YATSUYANAGI , Tsuyoshi MAEDA , Shin NAKAMURA
CPC分类号： F28D7/0033 , F28F1/325 , F28F21/084
摘要： A heat exchanger includes: a first header and a second header; and a plurality of heat-transfer members, each of the plurality of heat-transfer members having a first end in a second direction connected to the first header and a second end in the second direction connected to the second header. The heat exchanger further includes a plurality of heat-transfer promotion members, each of the plurality of heat-transfer promotion members being located in the external space, being arranged in a central region between two heat-transfer members adjacent to each other in a first direction among the plurality of heat-transfer members, and extending in a third direction.
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公开(公告)号：US20240003636A1
公开(公告)日：2024-01-04
申请号：US18254794
申请日：2021-02-04
摘要： 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.
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公开(公告)号：US20220228818A1
公开(公告)日：2022-07-21
申请号：US17615199
申请日：2019-08-06
摘要： 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×π is defined as B, a relation of Do
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公开(公告)号：US20210108864A1
公开(公告)日：2021-04-15
申请号：US17057002
申请日：2018-07-11
摘要： An object is to provide a heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus in which frost melt water is inhibited from reaching an upper surface of a header and the heat exchange performance and the reliability are improved. The invention includes: a plurality of heat transfer tubes arranged in parallel with each other; a fin connected to at least one of the plurality of heat transfer tubes; and a header having a header end surface being a surface along a direction in which the plurality of heat transfer tubes are arranged in parallel with each other, the header being connected to one end portions of the plurality of heat transfer tubes. The fin has a first portion including an edge facing the header and a second portion other than the first portion, the fin extending in a first direction crossing the direction in which the plurality of heat transfer tubes are arranged in parallel with each other, the first direction being perpendicular to a longitudinal tube axis of each of the plurality of heat transfer tubes. An end portion in the first direction of the first portion projects in the first direction relative to the header end surface, and an end portion in the first direction of the second portion is positioned closer in the first direction to the plurality of heat transfer tubes than the header end surface is.
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公开(公告)号：US20200149818A1
公开(公告)日：2020-05-14
申请号：US16627404
申请日：2017-08-03
发明人： Akira ISHIBASHI , Tsuyoshi MAEDA , Shinya HIGASHIIUE , Daisuke ITO , Shin NAKAMURA , Ryota AKAIWA , Akira YATSUYANAGI , Ryuichi NAGATA , Eiji HIHARA , Chaobin DANG , Jiyang LI
摘要： In a heat exchanger, each of a plurality of heat exchange members includes: a flat pipe; and a heat transfer plate integrated with the flat pipe along a longitudinal direction of the flat pipe. A width direction of each of the flat pipes intersects with a direction in which the plurality of heat exchange members are arranged side by side. Each of the heat transfer plates includes an extending portion extending outward in the width direction of each of the flat pipes from at least one of one end of a corresponding one of the flat pipes in the width direction and another end of the corresponding one of the flat pipes in the width direction. Each of the flat pipes has one or more flat pipe bent portions, each forming a groove extending along the longitudinal direction of the flat pipes.
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公开(公告)号：US20170336145A1
公开(公告)日：2017-11-23
申请号：US15526829
申请日：2015-01-30
发明人： Shin NAKAMURA , Hideaki MAEYAMA , Akira ISHIBASHI , Shinya HIGASHIIUE , Daisuke ITO , Shigeyoshi MATSUI , Yuki UGAJIN
CPC分类号： F28D1/047 , F25B47/025 , F28D1/0417 , F28D1/0471 , F28D2021/0068 , F28F1/02 , F28F1/32 , F28F9/262 , F28F13/06
摘要： In a heat exchanger, a first heat exchange unit is formed by curving a third heat exchange unit having a planar shape through L-shape bending, and a second heat exchange unit is formed by curving a fourth heat exchange unit having a planar shape through the L-shape bending, independently of the third heat exchange unit. The first heat exchange unit and the second heat exchange unit are arranged so as to be opposed to each other along a corner portion between adjacent two side surfaces of a casing.
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公开(公告)号：US20220136740A1
公开(公告)日：2022-05-05
申请号：US17434298
申请日：2019-03-28
发明人： Shin NAKAMURA , Tsuyoshi MAEDA , Akira YATSUYANAGI , Atsushi MORITA , Ryuichi NAGATA , Shinya HIGASHIIUE , Akira ISHIBASHI , Shigeyoshi MATSUI , Atsushi TAKAHASHI
摘要： 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.
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公开(公告)号：US20200018494A1
公开(公告)日：2020-01-16
申请号：US16480403
申请日：2017-04-04
发明人： Akira YATSUYANAGI , Tsuyoshi MAEDA , Shin NAKAMURA
摘要： In a heat exchanger, when a lower surface of the first heat transfer tube is horizontal, in a vertical cross section perpendicular to a direction in which the first heat transfer tube passes through a first fin, upper surfaces of the first and second heat transfer tubes are inclined downward, an upper end of the second heat transfer tube is higher than the lower surface of the first heat transfer tube, and an intersecting point A at which an extension line of the upper surface of the second heat transfer tube and an extension line of the lower surface of the first heat transfer tube intersect is closer to the second heat transfer tube than is an intersecting point B at which the extension line of the upper surface of the second heat transfer tube and an extension line of a lower surface of the second heat transfer tube intersect.
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公开(公告)号：US20190331352A1
公开(公告)日：2019-10-31
申请号：US16089100
申请日：2016-06-07
发明人： Yohei KATO , Tsubasa TANDA , Shin NAKAMURA , Akira ISHIBASHI
摘要： An outdoor unit for an air-conditioning apparatus is configured to suppress damage on hairpin portions at an end portion of an outdoor heat exchanger due to freezing. The outdoor unit includes: an air passage defined inside a casing; an outdoor heat exchanger, which is installed in the air passage, and includes a plurality of heat exchange portions; an outdoor unit fan configured to introduce air into the outdoor heat exchanger; and an air passage blocking object installed in the air passage, and configured to block air flow. The outdoor heat exchanger includes: a heat transfer tube configured to allow refrigerant to pass therein; and a fin connected to the heat transfer tube. The heat transfer tube includes a hairpin portion, which is bent and folded back and to which no fin is connected. The air passage blocking object is configured to cover the hairpin portion.
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公开(公告)号：US20180238637A1
公开(公告)日：2018-08-23
申请号：US15753185
申请日：2015-09-30
发明人： Akira ISHIBASHI , Yuki UGAJIN , Daisuke ITO , Shin NAKAMURA , Satoshi UEYAMA , Aya KAWASHIMA , Susumu YOSHIMURA , Takashi MATSUMOTO , Ryota AKAIWA , Yoji ONAKA
CPC分类号： F28F1/04 , F25B39/00 , F28D1/05383 , F28D7/0066 , F28D2021/0068 , F28F1/02 , F28F1/022 , F28F1/06 , F28F9/02 , F28F2210/08
摘要： A heat exchanger includes a first heat exchanging portion including first and second flat tubes stacked in parallel with each other and spaced from each other to allow fluid to pass between the first and second flat tubes, and a second heat exchanging portion including third and fourth flat tubes stacked in parallel with each other, spaced from each other to allow fluid to pass between the third and fourth flat tubes, and oriented crosswise to a direction in which the first and second flat tubes are oriented. The second heat exchanging portion is arranged downstream of the first heat exchanging portion with respect to flow of the fluid.
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