Heat exchanger arrangement having at least one multipass heat exchanger and method for operating a heat exchanger arrangement

    公开(公告)号:US12117249B2

    公开(公告)日:2024-10-15

    申请号:US17601744

    申请日:2020-03-23

    摘要: The invention relates to a heat exchanger arrangement having at least one multipass heat exchanger, which comprises a first distributor (1), a second distributor (2) and at least one tubular diverter distributor (4) having a predefined tube cross-section (AU), and a tube arrangement (25) having a plurality of tubes (5) which are at least substantially parallel to one another and have a predefined tube cross-section (AR), through which a fluid—particularly, water—can flow and which are arranged in the tube arrangement (25) in columns with a predefined number of columns (n), wherein the first distributor (1) and the second distributor (2) are arranged at one end (A) of the heat exchanger arrangement and the diverter distributor (4) is arranged at the opposing end (B), and the tubes (5) extend from the one end (A) to the opposing end (B) and are connected to the diverter distributor (4) and the first or the second distributor (1, 2), and at least one vent opening (10) is arranged at a highest point (T), or at least in the vicinity of the highest point (T), of the diverter distributor (4) to equalize the pressure with the surroundings. In order to enable rapid filling of the heat exchanger arrangement with the fluid, a valve (11) is arranged in the at least one vent opening (10). When the valve (11) is fully opened, a flow cross-section (d) is clear for the passage of air, and the pipe cross-section (AU) of the diverter distributor (4) and the flow cross-section (d) of the valve (11) are the same as or greater than a minimum cross-section (Dmin), which is calculated from the product of the number of columns in the tube arrangement (25) and the pipe cross-section (AR) of the tubes (Dmin=n AR).

    HEAT EXCHANGER AND OUTDOOR UNIT COMPRISING SAID HEAT EXCHANGER

    公开(公告)号:US20240175643A1

    公开(公告)日:2024-05-30

    申请号:US18284099

    申请日:2022-03-16

    IPC分类号: F28F1/02 F28D1/053

    CPC分类号: F28F1/022 F28D1/05366

    摘要: There is provided a heat exchanger capable of suppressing a decrease in the amount of heat exchange due to the nonuniform air velocity distribution. The heat exchanger includes a plurality of rooms partitioned by partition plates inside the inlet header, a plurality of flat tubes connected to each room and a plurality of branch pipes connected to each room and the distributor, in which depending on an air velocity distribution, the number of the branch portions of the branch pipe connected to the room, to which the flat tubes located in a part having a high air velocity are connected, is less than the number of the branch portions of the branch pipe connected to the room, to which the flat tubes passing through a part having a low air velocity, are connected.

    HEAT EXCHANGER
    3.
    发明公开
    HEAT EXCHANGER 审中-公开

    公开(公告)号:US20240159468A1

    公开(公告)日:2024-05-16

    申请号:US18259672

    申请日:2021-12-23

    申请人: Danfoss A/S

    IPC分类号: F28D1/053 F28F1/02

    CPC分类号: F28D1/05366 F28F1/022

    摘要: A heat exchanger including: a collecting pipe that has a collecting pipe wall; and a plurality of flat pipes. The plurality of flat pipes include two groups of first flat pipes, which are positioned on the outermost side in an axial direction of the collecting pipe, and a second flat pipe, which is positioned between the two groups of first flat pipes; and the collecting pipe includes two first parts, which correspond to the two groups of first flat pipes in the axial direction of the collecting pipe, and a second part, which is positioned between the two first parts. The tensile strength of at least one group of first flat pipes from the two groups of first flat pipes in the axial direction of the collecting pipe is greater than the tensile strength of the second flat pipe in the axial direction of the collecting pipe and/or the tensile strength of at least one first part from the two first parts of the collecting pipe in the axial direction of the collecting pipe is greater than the tensile strength of the second part of the collecting pipe in the axial direction of the collecting pipe. By means of the heat exchanger in the present invention, the bursting strength of the heat exchanger can be improved.

    ANNULAR ARRANGEMENT OF HEAT EXCHANGERS
    4.
    发明公开

    公开(公告)号:US20240093943A1

    公开(公告)日:2024-03-21

    申请号:US17947337

    申请日:2022-09-19

    IPC分类号: F28D1/053 F02C7/10 F28D21/00

    摘要: A heat exchanger having: front and aft ends; heat exchanger cores in an annular loop that define circumferential gaps between adjacent pairs of the cores, the cores, individually or as axially aligned sets, extend from the front to aft ends and have facing inlet sides and circumferentially facing outlet sides configured such that the inlet sides and the outlet sides from the adjacent pairs of the cores face into the same circumferential gaps; and core guide vanes disposed in the circumferential gaps, the core guide vanes have an aft portion that extends from the front end to the aft end of the heat exchanger, wherein: at the front end the heat exchanger, the core guide vanes are closer to the outlet side of the cores; and at the aft end the heat exchanger, the core guide vanes are closer to the inlet sides of the cores.

    HEAT EXCHANGER ASSEMBLY FOR A MOTOR VEHICLE
    5.
    发明公开

    公开(公告)号:US20230366631A1

    公开(公告)日:2023-11-16

    申请号:US18315114

    申请日:2023-05-10

    IPC分类号: F28D1/053 F28D21/00

    摘要: A heat exchanger assembly for a motor vehicle includes a heat exchanger having at least one inlet tank, at least one outlet tank, and a plurality of exchanger tubes of an exchanger core. The exchanger tubes connect the inlet tank and the outlet tank and extend along a transverse axis that extends perpendicular to a longitudinal axis of the motor vehicle. Each exchanger tube defines a fluid passage path for fluid. A first pair of adjacent exchanger tubes form a first air passage path therebetween for ambient air and a second pair of adjacent exchanger tubes form a second air passage path therebetween for ambient air. The first air passage path has an air flow resistance that is different from an air flow resistance of the second air passage path.

    COOLING SYSTEM
    6.
    发明公开
    COOLING SYSTEM 审中-公开

    公开(公告)号:US20230311713A1

    公开(公告)日:2023-10-05

    申请号:US18015958

    申请日:2021-06-18

    IPC分类号: B60L58/33 F28D3/02 F28D1/053

    摘要: A cooling system for a fuel cell of a motor vehicle may include a closed coolant circuit through which a coolant is circulatable, a heat exchanger fluidically incorporated in the coolant circuit for cooling the coolant, an open sprinkler circuit through which a sprinkler fluid is flowable for cooling the heat exchanger, and a channel structure fluidically incorporated in the sprinkler circuit. The heat exchanger may include an air inlet surface, an air outlet surface, and a plurality of cooling tubes. The coolant may be flowable through the heat exchanger via the plurality of cooling tubes. Air may be flowable through the heat exchanger from the air inlet surface to the air outlet surface. The channel structure may include a plurality of channels, which may each include a plurality of outlet nozzles via which the sprinkler fluid is appliable to the plurality of cooling tubes.

    WATER-SHEDDING DEVICE FOR EVAPORATOR CORES
    7.
    发明公开

    公开(公告)号:US20230175790A1

    公开(公告)日:2023-06-08

    申请号:US17543813

    申请日:2021-12-07

    摘要: A heat exchanger that includes a first manifold; a second manifold; a plurality of refrigerant tubes configured to fluidically couple the first and second manifolds; a plurality of fins placed between the plurality of refrigerant tubes, such that the fins and refrigerant tubes define a core having a plurality of open channels that allow air to flow there through; and a water-shedding device positioned approximate to the first manifold with a separation distance being maintained there between. At least a portion of the water-shedding device extends into one or more fin free windows located between the plurality of refrigerant tubes, such that condensate is extracted from between the refrigerant tubes.

    HEAT EXCHANGER AND AIR CONDITIONING SYSTEM HAVING THE SAME

    公开(公告)号:US20230168038A1

    公开(公告)日:2023-06-01

    申请号:US18057812

    申请日:2022-11-22

    申请人: Danfoss A/S

    IPC分类号: F28D1/053 F28F1/10 F28F9/00

    摘要: The present disclosure discloses a heat exchanger and an air conditioning system having the heat exchanger. The heat exchanger includes a first heat exchanger core, a second heat exchanger core and a connection part. Heat exchange tubes of the first heat exchanger core and the second heat exchanger core include first circuit heat exchange tubes. A length of the heat exchange tube of the first heat exchanger core is greater than a length of the heat exchange tube of the second heat exchanger core. The connection part includes a first connection part through which the first circuit heat exchange tubes of the first heat exchanger core are connected with the first circuit heat exchange tubes of the second heat exchanger core. The heat exchange tubes of at least one of the first heat exchanger core and the second heat exchanger core further include second circuit heat exchange tubes. First circuit heat exchange tube groups each constituted by at least one of the first circuit heat exchange tubes and second circuit heat exchange tube groups each constituted by at least one of the second circuit heat exchange tubes are arranged alternately. Thereby, the heat exchange performance can be improved at both partial load and full load.