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公开(公告)号：EP4328534A1
公开(公告)日：2024-02-28
申请号：EP21937847.8
申请日：2021-04-20
摘要： 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.
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公开(公告)号：EP4242569A1
公开(公告)日：2023-09-13
申请号：EP20960833.0
申请日：2020-11-06
IPC分类号： F28F9/00
摘要： An outdoor heat exchanger (11) includes a first heat exchange module (21a) and a second heat exchange module (21b), as heat exchange modules (21) each including a plurality of heat transfer tubes (23) and a securing connector (25) that holds the heat transfer tubes (23). The securing connector (25) has a holder plate (27a) holding one end of each of the heat transfer tubes (23), and a pair of side plates (29a) extending from the holder plate (27a) away from the heat transfer tubes (23). The pair of side plates (29a) of the securing connector (25) of the first heat exchange module (21a) is joined to the pair of side plates (29a) of the securing connector (25) of the second heat exchange module (21b). The securing connectors (25) of both of the first heat exchange module (21a) and the second heat exchange module (21b) define a space, and the heat transfer tubes (23) of the first heat exchange module (21a) and the heat transfer tubes (23) of the second heat exchange module (21b) communicate with the space.
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公开(公告)号：EP4001821A1
公开(公告)日：2022-05-25
申请号：EP19937853.0
申请日：2019-07-18
摘要： A heat transfer tube includes: an elongated main body including a plurality of flow passages formed by bending a single plate material a number of times; and an extension portion corresponding to at least one of end portions of the single plate material in an elongated-section long-axis direction that is a direction along a long axis of a section of the main body. The extension portion is longer than a short axis of the section of the main body.
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公开(公告)号：EP4290170A1
公开(公告)日：2023-12-13
申请号：EP21924628.7
申请日：2021-02-04
摘要： A flat heat transfer tube (21) in an outdoor heat exchanger (11) includes a main body (23) and a connecting portion (25). The flat heat transfer tube (21) has a plurality of flow paths (27) spaced from each other. The flat heat transfer tube (21) has a first side portion (29a) and a second side portion (29b) spaced from each other by a width. The connecting portion (25) connected to an opening (33) of a header (31) has an opening end face (26) in which each of the flow paths (27) opens. In the connecting portion (25), the first side portion (29a) is tapered toward the opening end face (26) to be reduced in width. A first opening end (28a) of a first flow path (27a) located closest to the first side portion (29a) has a second flow path cross-sectional area (S2) smaller than a first flow path cross-sectional area (S 1) of an opening end (28) of each of other flow paths (27).
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公开(公告)号：EP4163580A1
公开(公告)日：2023-04-12
申请号：EP20938547.5
申请日：2020-06-04
IPC分类号： F28F9/02
摘要： A heat exchanger according to the present disclosure includes: a heat exchange portion in which a plurality of heat transfer tubes, in which refrigerant flows, are arranged in a height direction, the plurality of heat transfer tubes being configured to exchange heat between the refrigerant and air; a turn-back portion to which one end of each of the plurality of heat transfer tube is connected and which is configured to allow the refrigerant to flow between two rows of heat exchange portions arranged in an airflow direction, one of the two rows of heat exchange portions being the heat exchange portion and arranged on an airflow upstream side, the other of the two rows of heat exchange portions being the heat exchange portion and arranged on an airflow downstream side; and a plurality of distribution merge portions to each of which the other end of the heat transfer tube of the heat exchange portion of each row is connected, and which is configured to distribute the refrigerant to the heat transfer tube or merge refrigerant flows from the heat exchange portions, the plurality of heat transfer tubes of the heat exchange portion being grouped into, in order from an upper side in the height direction, a main heat exchange portion, a first auxiliary heat exchange portion having fewer number of the heat transfer tubes than those of the main heat exchange portion, and a second auxiliary heat exchange portion having fewer number of the heat transfer tubes than those of the first auxiliary heat exchange portion, and being 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 allow the refrigerant to flow out of the heat exchanger.
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公开(公告)号：EP4130612A1
公开(公告)日：2023-02-08
申请号：EP20927408.3
申请日：2020-03-27
摘要： A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus capable of reducing an imbalance in the amounts of liquid refrigerant and gas refrigerant that flow in heat transfer tubes even in a low-load operation of the refrigeration cycle apparatus are obtained. A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus of the present disclosure include: heat transfer tubes arranged in a first direction and extending in a second direction perpendicular to the first direction; a refrigerant distributor connected to one end portion of each of the heat transfer tubes; and a refrigerant inflow pipe connected to the refrigerant distributor. The refrigerant distributor is formed to extend in the first direction, and includes: a gas-liquid separation chamber in which refrigerant that flows from the refrigerant inflow pipe into the gas-liquid separation chamber is separated into gas refrigerant and liquid refrigerant; a distribution chamber connected to the end portion of each of the heat transfer tubes; a liquid passage hole through which the liquid refrigerant flows, and through which the gas-liquid separation chamber and the distribution chamber communicate with each other; and a gas passage hole through which the gas refrigerant flows, and which is provided offset from the liquid passage hole in the first direction.
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公开(公告)号：EP4012315A1
公开(公告)日：2022-06-15
申请号：EP19940370.0
申请日：2019-08-06
摘要： A heat exchanger includes a plurality of fins arranged in parallel to each other and a plurality of heat transfer pipes each extending in a direction intersecting the plurality of fins. The plurality of heat transfer pipes are placed in a plurality of rows in a row direction at a row pitch L1 and are placed in a plurality of steps in a step direction at a step pitch L2. Where an outer diameter of each of the plurality of heat transfer pipes is defined as Do, a wall thickness is defined as tP, an area represented by a numerical expression of L1 × 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 2 - 0.0185 × tP + 0.0043) × In (Do) + (1.6950 × tP 2 + 1.8455 × tP + 1.5416) ≤ B/A ≤ (0.2076 × tP 2 - 0.1480 × tP + 0.0545) × Do ^ (-0.0021 × tP 2 - 0.0528 × tP + 0.0164), and a relation of B/A 2 - 0.0417 × tP + 0.0574 are satisfied.
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公开(公告)号：EP3951287A1
公开(公告)日：2022-02-09
申请号：EP19921695.3
申请日：2019-03-28
发明人： NAKAMURA, Shin , MAEDA, Tsuyoshi , YATSUYANAGI, Akira , MORITA, Atsushi , NAGATA, Ryuichi , HIGASHIIUE, Shinya , ISHIBASHI, Akira , MATSUI, Shigeyoshi , TAKAHASHI, Atsushi
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：EP4310427A1
公开(公告)日：2024-01-24
申请号：EP21931415.0
申请日：2021-03-15
摘要： An outdoor heat exchanger (1) includes: a group of windward flat tubes including a plurality of first flat tubes (201) and a plurality of second flat tubes (202); a group of leeward flat tubes including a plurality of third flat tubes (301) and a plurality of fourth flat tubes (302) and disposed at a leeward position with respect to the group of windward flat tubes in a flow direction of air; and a distributor (10) that distributes refrigerant that flows in from a center of the distributor to the plurality of third flat tubes (301) through a plurality of branches. When the outdoor heat exchanger (1) acts as an evaporator, the refrigerant flows through the plurality of second flat tubes (202), the plurality of fourth flat tubes (302), the plurality of third flat tubes (301), and the plurality of first flat tubes (201) in this order, and when the outdoor heat exchanger (1) acts as a condenser, the refrigerant flows through the plurality of first flat tubes (201), the plurality of third flat tubes (301), the plurality of fourth flat tubes (302), and the plurality of second flat tubes (202) in this order.
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公开(公告)号：EP4160112A1
公开(公告)日：2023-04-05
申请号：EP20938869.3
申请日：2020-06-01
摘要： A heat exchanger includes a first header being configured to collect and deliver refrigerant and extending in a first direction, a second header being configured to collect and deliver refrigerant, being disposed at a position facing the first header and extending in the first direction, and a plurality of heat transfer components each extending from the first header to the second header and being provided at intervals along the first direction, 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.
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