A continuously variable transmission for a vehicle includes a drive clutch, a driven clutch operably coupled to the drive clutch, and a belt extending between the drive and driven clutches. The continuously variable transmission also includes an inner cover and an outer cover removably coupled to the inner cover. At least one of the inner and outer covers includes an air inlet for providing cooling air to the drive and driven clutches and the belt.

A heat exchanger has an upper manifold with a first curved section; a lower manifold spaced from and extending parallel to the upper manifold and having a second curved section; a plurality of refrigerant tubes, and a plurality of corrugated fins. Each corrugated fin is formed by a strip having radiused portions alternating with planar portions, and the radiused portions are in contact with the respective adjacent refrigerant tubes. Each of the fins has a curve-inner edge and a curve outer edge and at least one edge of the curve-inner edge and the curve outer edge of at least one fin has a recessed portion in the planar portions that is recessed inward toward a center of the core.

According to various aspects, exemplary embodiments are provided of heat exchangers and applications. In an exemplary embodiment, a heat exchanger can include at least a first feature array and a second feature array, a channel in an interior of the heat exchanger, through which a fluid can flov, an inlet for the fluid to enter the channel, an outlet for the fluid to exit the channel. The channel may include at least one surface and said first feature array and said second feature array are positioned on the at least one surface of the channel, the fluid configured to flow from said inlet, through said channel to said outlet, and the first and second feature arrays have different densities.

A heat exchange system for casings of rotary electric machines is described herein. The heat exchange system applied to the rotating electrical machine casing and the machine is equipped with a finned casing comprising a number of fins equipped with a modified profile, each one interleaved with complementary fins, both profiles distributed over the external surface of the casing. The fins have a predominantly continuous profile, supported in parallel along the casing height, and respectively show projections from a guideline, with structures with trapezoidal or rectangular section being interleaved to one another in a front region of the machine.

A continuously variable transmission for a vehicle includes a drive clutch, a driven clutch operably coupled to the drive clutch, and a belt extending between the drive and driven clutches. The continuously variable transmission also includes an inner cover and an outer cover removably coupled to the inner cover. At least one of the inner and outer covers includes an air inlet for providing cooling air to the drive and driven clutches and the belt.

A heat exchanger includes: refrigerant channels that extend in a first direction, are disposed along a second direction intersecting with the first direction, and are disposed along a third direction intersecting with the first direction and the second direction; and heat transfer tubes defining the refrigerant channels. One or both of a size of an outer edge and a size of an inner edge of the heat transfer tubes are different between a first position and a second position in the first direction. Outer surfaces of the heat transfer tubes each include a protrusion that protrudes in a direction intersecting with the first direction, and is in contact with an outer surface of one of the heat transfer tubes adjacent thereto in the second direction. The protrusion includes a concave portion extending along the third direction.

A heat dissipation apparatus, including a base plate, a guide fin group, and a heat dissipation fin group, where the guide fin group is formed on a surface of the base plate, the guide fin group is disposed with at least two guide fins that are disposed at an interval, and the at least two guide fins extend along a surface of the base plate from an edge of the base plate, and a flow path for flowing of an airflow is formed between two adjacent guide fins, and the heat dissipation fin group includes at least one heat dissipation fin, where the at least one heat dissipation fin is fixedly connected to the top of the at least two guide fins to dissipate heat of the at least two guide fins. The heat dissipation apparatus further includes, guide fins and a stopper fin.

An air-cooled and ventilated heat exchanger includes a fin and a plurality of heat transfer tubes. The fin has a plate-shaped part and a plurality of protruding parts. The plate-shaped part is positioned so that a plate-thickness direction intersects an air-flow direction generated by ventilation, and the protruding parts protrude from the plate-shaped part in the plate-thickness direction. The heat-transfer tubes are-inserted into the fin so as to intersect the air-flow direction. The protruding parts have a first protruding part and a second protruding part. An inclination angle of the first protruding part with respect to the plate-shaped part is a first angle, an inclination angle of the second protruding part with respect to the plate-shaped part is a second angle, and the second angle is different from the first angle. The second protruding part is placed adjacent to the first protruding part.

At least one heat pipe is fixed to each of fin plates, a rectangular fin plate assembly is constituted of the fin plate, the fin plate and the fin plate of the plurality of respective radiation fin parts as the plurality of radiation fin parts are seen from the direction in which the heat pipes extend, the plurality of heat pipes include a first heat pipe group and a second heat pipe group, the first heat pipe group is positioned at the center in the longitudinal direction of the fin plate assembly, the second heat pipe group is positioned on both sides of the first heat pipe group in the longitudinal direction of the fin plate assembly, and the fin plate thermally connected to the first heat pipe group includes expanding parts.

A defrosting device includes a heating unit filled with a working fluid and including an active heating part heated to a first temperature that can evaporate the working fluid, and a passive heating part positioned at a rear side of the active heating part and heated to a lower temperature than the first temperature. The defrosting device also includes a heat pipe disposed adjacent to an evaporator to transfer heat to the evaporator while circulating working fluid heated by the active heating part, the heat pipe including an entrance portion configured to receive working fluid evaporated by the active heating part, and a return portion connected adjacent to the passive heating part and configured to receive working fluid that has condensed after circulating through the heat pipe. Condensed working fluid received at the heating unit first passes through the passive heating part before being reheated at the active heating part.