A heat exchanger (1) for thermally coupling a first fluid to a second fluid so as to transfer heat and in a fluidically separate manner includes a securing assembly (8) of two cover parts (9) and at least one, preferably a plurality of guide parts (11), through which duct tubes (5) of the heat exchanger (1) pass. The duct tubes (5) extend inside a housing tube (2) along the longitudinal axis of the housing tube (2). The first fluid passes through the housing tube (2) outside of the duct tubes (5), and the second fluid passes through the duct tubes (5). The duct tubes (5) may have circular or flattened cross-sections.

In accordance with at least one aspect of this disclosure, a transition structure for a heat exchanger can include a body defining a dome cavity. The dome cavity can be configured to transition flow between at least one first channel and a plurality of second channels having a different number than the at least one first channel.

An air conditioner including a distributor configured to distribute a fluid to a heat exchanger. The distributor comprises a main pipe; a partition defining a plurality of distribution paths in the main pipe; a first branched pipe inserted into the main pipe as much as first length, linked to a first distribution path of the plurality of distribution paths, connected to a first portion of the heat exchanger; and a second branched pipe inserted into the main pipe as much as second length different from the first length, linked to the first distribution path, connected to a second portion of the heat exchanger. A flow velocity of air exchanging heat at the first portion of the heat exchanger is faster than a flow velocity of air exchanging heat at the second portion of the heat exchanger. The first length is shorter than the second length.

A heat exchanger comprising a first manifold and a second manifold connected by a bundle of tubes, configured to provide at least an entry pass and an exit pass for a heat exchange fluid, further comprising an inlet port associated with the entry pass and an outlet port associated with the exit pass, wherein the exit pass is fluidically connected with the outlet port through a first opening, the first opening being connected with the outlet port through an additional channel outside of the manifolds, characterized in that the exit pass is further fluidically connected with the outlet port through a second opening so that the path for the heat exchange fluid to the outlet port is shorter from the second opening than from the first opening.

A transfer tube for a thermal transfer device can include at least one wall having an inner surface and an outer surface, where the inner surface forms a cavity, where the at least one wall further has a first end and a second end. The first end can be configured to couple to a terminus of a heat exchanger of the thermal transfer device. The second end can be configured to couple to a collector box of the thermal transfer device. At least a portion of the at least one wall can be disposed in a vestibule of the thermal transfer device. The cavity can be configured to simultaneously receive a first fluid that flows from the first end to the second end and a second fluid that flows from the second end to the first end.

A transfer tube for a thermal transfer device can include at least one wall having an inner surface and an outer surface, where the inner surface forms a cavity, where the at least one wall further has a first end and a second end. The first end can be configured to couple to a terminus of a heat exchanger of the thermal transfer device. The second end can be configured to couple to a collector box of the thermal transfer device. At least a portion of the at least one wall can be disposed in a vestibule of the thermal transfer device. The cavity can be configured to simultaneously receive a first fluid that flows from the first end to the second end and a second fluid that flows from the second end to the first end.

A heat exchange apparatus and a manufacturing method therefor are disclosed. The heat exchange apparatus comprises a valve core part and a core body part. The valve core part is provided with a valve base part. The valve seat part is at least partly arranged in a first conduit. The valve base part is provided with a base section with a bottom opening and a middle section with a peripheral opening. The valve base part is provided with a throttling hole. The throttling hole is in communication with the peripheral opening and the bottom opening. The middle section is arranged on a sheet part and the peripheral opening is in communication with inter-sheets channels. The heat exchanging apparatus comprising a connecting element. The connecting element is at least partly inserted into the first conduit. The bottom opening is in communication with a connecting cavity.

A heat exchanger includes a collecting pipe, a number of heat exchange tubes and a distributor. The collecting pipe has a first cavity and a first inner peripheral wall. The heat exchange tube has a second cavity. The distributor is accommodated in the first cavity. The distributor has a main cavity and a flow channel. The distributor includes a second inner peripheral wall forming the main cavity and a first outer peripheral wall. An axis of the first outer circle is not coaxial with an axis of the second outer circle, so that the flow channel of the distributor is relatively tortuous. It is beneficial to improve the distribution effect of a fluid. Besides, since the flow channel is formed inside the distributor, it is also beneficial to reduce the manufacturing difficulty of the distributor. A method for making the heat exchanger is also disclosed.

A heat exchanger duct includes a wall having ends spaced along a central axis. An inlet manifold is positioned within a downstream portion of the duct at a radially outward location. An outlet manifold is positioned within an upstream portion of the duct at a radially outward location. At least one of the inlet and outlet manifolds extend at least 10 degrees around the circumference of the duct. A central manifold is disposed between the inlet and outlet manifolds, and radially inwardly of the inlet and outlet manifolds. Heat exchanger entrance elements extend radially inward from the inlet manifold to the central manifold, and heat exchanger exit elements extend radially outward from the central manifold to the outlet manifold. A gas turbine engine is also disclosed.

A heat exchange device including a valve element component, a core body component and a connecting member having a first end and a second end, and the second end is provided with a welding section and an adjacent section; the core body component is provided with a welding matching portion; the welding section is welded to the welding matching portion, and the adjacent section is adjacent to the welding section; the outer diameter of the welding section is smaller than or equal to the inner diameter of the welding matching portion, and the outer diameter of the adjacent section is smaller than or equal to the inner diameter of the welding matching portion; and the distance between the end of the welding matching portion away from the valve element component and the end of the welding section away from the valve element component is larger than or equal to zero.