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.

The invention relates to a heat exchanger (1) comprising a bundle of tubes (2) arranged parallel to one another and inside of which a first heat transfer fluid is intended to circulate, wherein a second fluid is intended to pass through the bundle of tubes (2) between said tubes (2), said bundle of tubes (2) comprising spacers (6) which are arranged between said tubes (2), said spacers (6) having corrugations (60) extending in the longitudinal direction of the tubes (2), said corrugations (60) having ridges (61) in contact with said tubes (2) and sidewalls (62) connecting said ridges (61), the spacers (6) comprising a first portion (6A) and a second portion (6B), the first portion (6A) being disposed upstream of the second portion (6B) in the direction of passage of the second heat transfer fluid, the first (6A) and second (6B) portions being made from two distinct parts of different shapes.

The present invention relates to a heat exchanger (1) comprising a bundle of tubes (2) arranged parallel to one another and inside of which a first heat transfer fluid is intended to circulate, a second fluid being intended to pass through the bundle of tubes (2) between said tubes (2), said bundle of tubes (2) comprising spacers (6) which are disposed between said tubes (2), said spacers (6) having corrugations (60) extending in the longitudinal direction of the tubes (2), said corrugations (60) having ridges (61) in contact with said tubes (2) and sidewalls (62) connecting said ridges (61), the spacers (6) comprising a first portion (6A) and a second portion (6B), the first portion (6A) being arranged upstream of the second portion (6B) in the direction of flow of the second heat transfer fluid, wherein the first portion (6A) protrudes from the front edge of the tubes (2), the ridges (61) of the first portion (6A) having a profile having a flat (64) and the ridges (61) of the second portion (6B) having a rounded profile (65) such that the corrugations (60) have a sinusoidal profile.

The invention relates to a heat exchanger block 2 and to a heat recovery ventilation unit 1 comprising such a heat exchanger block. In the heat exchanger block 2, the individual flow cross-section (Q1) of flow passages of said plurality of first air flow passages (AFP1) in said parallel flow region (PF) and the individual flow cross-section (Q2) of flow passages of said plurality of second air flow passages (AFP2) in said parallel flow region (PF) gradually, preferably linearly, decrease along a straight line (x-perpendicular to the parallel air flow passages (AFP1 and AFP2) and from said first wall (W1) to said second wall (W2) of the block.

A heat exchanger has at least one inlet and outlet to permit circulation of refrigerant therethrough. Each heat exchanger includes a plurality of thin sections of material arranged between a pair of thin flat outer plates. Each of the thin sections of material is comprised of parallel flow paths, allowing for the refrigerant to flow through the inlet, then from one section to the next, and finally out the outlet. The arrangement of the sections of parallel flow paths allows for the refrigerant to come into contact with the majority of the inside wall of the outer plates, allowing for maximum heat exchange. In use for cooling liquids, the heat exchangers are arranged within a frame and brought into contact with the liquid to be cooled. When the heat exchangers are used to cool liquid sufficiently to produce ice crystals, a rotating scraping device sweeps across the surface of the heat exchanger, removing any ice crystals that have formed.

A plate heat exchanger without straight flow channels is provided, for exchanging heat between fluids. Said heat exchanger, comprises a start plate, an end plate and a number of heat exchanger plates provided with a pressed pattern of ridges and grooves with a pitch. The heat exchanger plates are kept at a distance from each other by contact between ridges and grooves of neighboring plates in contact points, when said plates are being stacked onto one another. Flow channels are thus formed between said plates, the contact points are positioned so that no straight lines are formed along the length of the heat exchanger plates.

A heat exchanger includes a first set of fins, a second set of fins, and an exterior wall. The first set of fins extend radially and are coaxial with each other. The first set of fins forms a first set of channels. The second set of fins extend radially and are coaxial with each other. The second set of fins forms a second set of channels. Channels of the first and second sets of channels are disposed in an alternating pattern in a circumferential direction of the heat exchanger. The first and second sets of fins are integrally formed together. A cross-sectional width of a channel of at least one of the first set of channels and the second set of channels increases as a radial distance from a centerline axis of the heat exchanger increases.

A three-dimensional heat dissipating device includes a vapor chamber, a heat pipe, a working fluid and a solder bonding portion. The vapor chamber includes an inner cavity and a first joint. The first joint is formed with a passage being in communication with the inner cavity. The heat pipe is provided with a pipe space and a second joint. The pipe space is in communication with the inner cavity through the passage. The second joint is sleeved to surround the first joint such that one end surface of the second joint is directly contacted with one surface of the vapor chamber. The working fluid is filled within the pipe space and the inner cavity. The solder bonding portion connected to the second joint and the surface of the vapor chamber for integrating the heat pipe and the vapor chamber together.

A heat exchanger includes a plurality of fins arranged as a network and delimiting corridors, and an envelope having an internal wall and an external wall, the internal and external walls delimiting between them a channel for a flow of a first fluid in a main direction, the network of fins being arranged in the channel and connected to the internal and external walls, at least one passage for a flow of a second fluid being embedded in at least one of the internal and external walls, the channel being, in the main direction, divergent and then convergent.

A heat sink includes a base plate; a cover overlapping the base plate; fins, each having a plate-like shape projecting from the base plate in a direction perpendicular to the base plate, located between the base plate and the cover; one or a plurality of first fin groups composed of a plurality of the fins arranged with a gap therebetween in a first direction; and one or a plurality of second fin groups composed of a plurality of the fins arranged with a gap therebetween in the first direction, and adjacent to the first fin group with a gap therebetween in a second direction. Positions in the first direction of the fins belonging to the second fin group are displaced with respect to positions in the first direction of the fins belonging to the first fin group. Each of the fines has an S-shape.