A collector tube for a heat exchanger having at least one flat tube, may include a base and a cover arranged opposite the base. The base and the cover may define a longitudinal duct. The base may include at least one passage having an opening configured to accommodate the at least one flat tube of the heat exchanger. The opening may have at least one wide edge and at least one narrow edge. The longitudinal duct may have, in a cross section, a diameter that is smaller than the at least one wide edge of the opening. The at least one passage may include a collar extending away from the longitudinal duct.

An embodiment of the disclosure provides a micro-channel heat exchanger, which includes a flat tube, wherein a width of the flat tube is A, a thickness of the flat tube is T; a plurality of flat tubes are provided, the plurality of flat tubes are arranged in parallel along a first direction, a distance between straight sections of two adjacent flat tubes in the plurality of flat tubes 10 is B, and the first direction is parallel to a symmetry plane; and a length direction of a projection of each of the straight sections on the symmetry plane is a height direction, and a distance between a highest point of the outer bent surface and a lowest point of a top end of the inner bent surface along the height direction on the symmetry plane is H1, wherein H1[(A/B)+1]T.

A heat exchanger can include a plurality of flat tubes each having a heat exchange channel for a flow of a heat exchange medium, and a first collector pipe and a second collector pipe connected to distal sections of the plurality of flat tubes and disposed side by side. Chambers of the first collector pipe and the second collector pipe can be in communication with the heat exchange channels of the flat tubes. The flat tube includes a main body section, a distal section, and a torsion section connected therebetween. The main body section and the distal sections can be straight sections. The first collector pipe and the second collector pipe can be provided with mounting holes for the distal section being inserted into. A length direction of the mounting hole can be inclined to the axis of the first collector pipe or the axis of the second collector pipe.

A microchannel evaporator includes a plurality of microchannels. Each of the plurality of microchannels includes a first end and a second end. A first end-tank is coupled to each first end of the plurality of microchannels and a second end-tank is coupled to each second end of the plurality of microchannels. An inlet is coupled to the first end-tank for receiving a fluid into the microchannel evaporator and an outlet is coupled to the second end-tank for expelling the fluid from the microchannel evaporator. Each microchannel of the plurality of microchannels is substantially U-shaped.

A heat exchanger (100) comprises: a first header tube (1) and two second header tubes (3); a first heat exchange tube (51) in fluid communication with one of the two second header tubes (3) and a second chamber (B) of the first header tube (1); a first runner tube (61) in fluid communication with the one of two second header tubes (3) and a first chamber (A) of the first header tube (1); a second heat exchange tube (52) in fluid communication with the other of the two second header tubes (3) and the first chamber (A) of the first header tube (1); and a second runner tube (62) in fluid communication with the other of the two second header tubes (3) and the second chamber (B) of the first header tube (1). The heat exchanger (100) bends at a first bending portion (71) between the other of the two second header tubes (3) and the first header tube (1), so as to enable the other of the two second header tubes (3) to be higher or lower than the first header tube (1).

A heat exchanger includes a main heat exchange unit including a plurality of first heat transfer pipes arranged side by side, a sub-heat exchange unit including a plurality of second heat transfer pipes arranged side by side, and a relay unit including a plurality of relay passages connecting the plurality of first heat transfer pipes and the plurality of second heat transfer pipes. Each of the plurality of relay passages has one inlet connected to a corresponding one of the plurality of second heat transfer pipes, and a plurality of outlets each connected to a corresponding one of the plurality of first heat transfer pipes. Each of the plurality of relay passages distributes refrigerant flowing from the one inlet, without merging streams of the refrigerant together, and causes the refrigerant to flow out of the plurality of outlets.

A heat exchanger includes a tube having a length and an outside boundary. The tube is configured to convey fluid therethrough to facilitate heat transfer, and the outside boundary of the tube having a bottom wall portion, a top wall portion opposing the bottom wall portion, and two side wall portions between the bottom wall portion and the top wall portion, in which a segment of the length of the tube has a plurality of dimples selectively placed outside of the bottom wall portion.

A heat exchanger includes first and second sets of parallel arranged tubes. The first set of tubes extends along a first arcuate path, the second set of tubes extends along a second arcuate path, and each one of the second set of tubes is aligned in a common plane with a corresponding one of the first set of tubes. Corrugated fin segments are arranged in spaces between adjacent tubes, and crests and troughs of the corrugated fin segments are joined to broad and flat faces of the tubes. In making the heat exchanger, the material of the corrugated fin segment is intermittently slit to define breaking points prior to arranging the corrugated fin segment between the tubes.

In a heat source-side unit according to the present invention, a temperature sensor is installed on an inter-column connecting part included in a plurality of inter-column connecting parts and located higher than an intermediate position in a vertical direction of a heat exchanger.

A heat exchanger is provided for allowing heat to be exchanged between a first fluid and a second fluid, wherein the first fluid is a liquid. The heat exchanger comprises a core comprising: a plurality of first flow paths for the first fluid and a plurality of second flow paths for the second fluid; a plurality of pin components extending into the first flow paths; a plurality of fin components extending through the second flow paths; a plurality of first enclosure bars extending between adjacent separating plates that are either side of the first flow paths, the first enclosure bars being arranged to at least partially define the first flow paths; and a plurality of second enclosure bars extending between adjacent separating plates that are either side of the second flow paths, the second enclosure bars being arranged to at least partially define the second flow paths.