The heat exchanger includes a first heat-exchange portion and a second heat-exchange portion. The first heat-exchange portion includes a first header tank having an inflow portion through which the heat medium flows into the first heat-exchange portion. The second heat-exchange portion includes a second header tank having an outflow portion through which the heat medium flows out of the second heat-exchange portion. The first header tank and the second header tank are connected to each other via a connecting portion. The connecting portion has a slit passing through the connecting portion.

An un-finned heat exchanger (100). The heat exchanger (100) comprises: a heat exchange tube (1), which comprises a body; a fluid channel (11) formed inside the body; and a collecting tube (2) connected to the heat exchange tube (1). Using the heat exchanger can reduce accumulation of dirt on the heat exchanger.

A heat exchanger assembly includes a plurality of flattened heat exchanger tubes. The plurality of heat exchanger tubes include a bend that separates the plurality of heat exchanger tubes between extending in a first plane and extending in a second plane transverse to the first plane. An inlet manifold is in fluid communication with the plurality of heat exchanger tubes and includes a distribution insert at least partially extending through an inlet opening in the inlet manifold. An outlet manifold is in fluid communication with the plurality of heat exchanger tubes and includes an outlet opening spaced inward from opposing ends of the outlet manifold.

Embodiments of the present disclosure are directed to a climate management system that includes a heat exchanger having a first set of microchannel coils fluidly coupled to a first circuit of the climate management system and a second set of microchannel coils fluidly coupled to a second circuit of the climate management system, where the first circuit and the second circuit are fluidly separate from one another, and where the first set of microchannel coils and the second set of microchannel coils are disposed in an alternating arrangement along a length of the heat exchanger such that the first set of microchannel coils and the second set of microchannel coils are interlaced in the heat exchanger.

A heat exchanger (5) includes a plurality of flat heat transfer tubes (11) and a header (12), wherein the header (12) includes a first partition member (21) that separates an internal space of a main body unit (20) into a refrigerant inflow portion (24) and an upper portion (25), a second partition member (22) that separates the upper portion (25) into a connected portion (26) connected to the plurality of flat heat transfer tubes (11) and an opposite portion (27), and a third partition member (23) that separates the opposite portion (27) into a windward portion (28) and a leeward portion (29) a plurality of windward communication holes (35) and a plurality of leeward communication holes (36) that allow communication from the windward portion (28) and the leeward portion (29) to the connected portion (26) are arranged the second partition member (22) an adjustment channel (30) that distributes the refrigerant from the refrigerant inflow portion (24) to the windward portion (28) and the leeward portion (29) and that increases a flow rate of the plurality of windward communication holes (35) as compared to a flow rate of the plurality of leeward communication holes (36) is arranged in the header (12).

A heat exchanger includes tubes arranged side by side, and a tank connected to ends of the tubes. The heat exchanger performs heat exchange between a first fluid flowing inside the tubes and a second fluid flowing outside the tubes. The heat exchanger includes a closing member disposed inside the tank and partially closing an opening provided at an end of a predetermined tube that is at least one of the tubes. The predetermined tube has a protrusion formed at the end of the predetermined tube. The closing member has an avoiding structure that avoids interference between the protrusion and the closing member.

Disclosed is a heat exchanger, including: at least two heat exchange tube groups—wherein each heat exchange tube group includes at least two heat exchange tubes; and a connecting member, wherein the at least two heat exchange tubes are communicated with each other by the connecting member—the at least two heat exchange tube groups are connected by the connecting member, and the at least two heat exchange tube groups are not communicated with each other. The heat exchanger solves a problem that the structure of the heat exchanger with an A type structure in a technology known to inventors is complicated.

In one instance, a multistage microchannel condenser is provided for use as an aspect of a heating, ventilating, and air conditioning (HVAC) system. The multistage microchannel condenser includes at least two pluralities of flat tubes having microchannels, each associated with a different refrigeration circuit, that are interspersed so that when only one refrigeration circuit is operational, the multistage microchannel condenser still does not have any substantial thermal dead spots. Manifolds are used on each end of the multistage microchannel condenser to fluidly couple members of the at least two pluralities of flat tubes such that the refrigerant in each refrigeration circuit remains separated while still using a majority of the area of the face of the multistage microchannel condenser. Other aspects are presented.

A heat exchanger includes: a header that extends in a horizontal direction; and heat transfer tubes that extends in a direction crossing the horizontal direction, that are disposed side by side in a longitudinal direction of the header, and that are connected to the header. The header includes a first space that causes a refrigerant to flow in a first direction along the longitudinal direction of the header, a second space that causes the refrigerant to flow in a second direction along the longitudinal direction of the header and opposite to the first direction, a circulation member extends in the longitudinal direction of the header and separates the first space from the second space, a first communication port, a second communication port, and an inflow port.

A heat exchanger according to the present disclosure includes a main heat exchange unit configured to exchange heat between air and refrigerant, and condense the refrigerant, a subcooling heat exchange unit configured to exchange heat between air and the refrigerant passing through the main heat exchange unit, and subcool the refrigerant passing through the main heat exchange unit, and a connection pipe configured to connect the main heat exchange unit and the subcooling heat exchange unit to allow the refrigerant to pass therethrough, wherein the connection pipe connects the main heat exchange unit on its outflow side to the refrigerant and the subcooling heat exchange unit on its inflow side to the refrigerant, such that when the main heat exchange unit condenses the refrigerant, the refrigerant from the outside flows into the downstream side of the main heat exchange unit and the subcooling heat exchange unit relative to a flow of the air, and flows out from the upstream side of the main heat exchange unit and the subcooling heat exchange unit relative to a flow of the air to form a counter flow in which a flow of the refrigerant is opposite to a flow of the air.