A tight-fit riveting structure for a clustered radiation fin set and a heat pipe and a riveting method include a radiation fin set formed by locking a plurality of radiation fins together and at least one heat pipe. The radiation fin set has an accommodation slot for accommodating the heat pipe. The heat pipe is positioned in the accommodation slot for a tight fit by subjecting two sides of the accommodation slot of the radiation fin set to a riveting operation. First riveting and deforming portions defined on two sides of a communication mouth of the accommodation slot are riveted towards a surface of the heat pipe, which causes the deformation of the first riveting and deforming portions whereby the heat pipe is clamped in a tight fit manner.

A electronic device includes: a plurality of substrates each including a substrate main body and a heat generating element, the plurality of substrates being provided side by side in a plate thickness direction; a cooler which is provided between the substrates adjacent to each other, and configured to cool the heat generating element; and a piping which is made of metal, and is connected to the cooler. The piping includes: an inner piping portion which is arranged in an inter-substrate region, and is connected to the cooler; an inner piping extending portion provided so as to extend from the inner piping portion to an outer side of the inter-substrate region; and an outer piping portion which is arranged to be shifted from the inter-substrate region, and is connected to the inner piping extending portion. The outer piping portion includes a movable piping portion that is deformable.

A heat dissipation device is configured for a working fluid to flow therethrough. The heat dissipation device includes a base and at least one heat dissipation fin. The base has at least one internal channel configured for the working fluid to flow therethrough. The at least one heat dissipation fin having an extension channel and an inlet and an outlet is in fluid communication with the extension channel. The at least one heat dissipation fin is inserted into one side of the base, and the extension channel is communicated with the at least one internal channel through the inlet and the outlet.

An internal structure of vapor chamber is provided. A first plate has an inner surface. A periphery of the first plate has a sealing edge extending outwardly; a level difference exists between the first plate and the sealing edge. Multiple supporting protrusions are formed on the inner surface of the first plate. A second plate has an inner surface spaced apart from the inner surface of the first plate. The brazing structure has a sealing portion and connecting portions, the sealing portion is fixed between the second plate and the sealing edges of the first plate, and the connecting portions are respectively disposed between the corresponding supporting portions of the first plate and of the second plate. The sealing portion is disposed around a periphery of the second plate to align and contact with the sealing edge.

A wick sheet for a vapor chamber includes a sheet body having a first body surface and a second body surface, a first vapor flow channel portion, a liquid flow channel portion provided on the second body surface, and the second vapor flow channel portion provided on the first body surface. The sheet body includes a land portion having the longitudinal direction being a first direction, and the first vapor flow channel portion is disposed around the land portion. The second vapor flow channel portion includes a vapor flow channel groove extending from one of side edges of the land portion to the other side edge in a second direction orthogonal to the first direction.

A tight-fit riveting structure for a heat dissipation aluminum base and a heat pipe includes a heat dissipation aluminum base, a heat pipe, and a holder. When the heat dissipation aluminum base is to be manufactured, an upper surface of a thin aluminum plate is pressed downward to form an arched portion. The arched portion protrudes below the thin aluminum plate. A cavity is defined in the arched portion. The cavity has an upper end opening. The cavity has an inner width corresponding to an outer width of the heat pipe. The cavity has a depth greater than a thickness of the heat pipe.

A loop-type heat pipe includes a loop-type heat pipe main body including a loop-shaped flow path in which a working fluid is enclosed, a first magnet provided to the loop-type heat pipe main body, a heat dissipation plate thermally connected to the loop-type heat pipe main body, and a second magnet provided to the heat dissipation plate and provided to face the first magnet. The first magnet and the second magnet are provided so that different magnetic poles face to each other.

A refrigerated merchandiser including a case defining a product display area and including an air inlet and an air outlet in communication with the product display area to form an air curtain across a front of the product display area. The refrigerated merchandiser also includes a shelf that is coupled to the case within the product display area. The shelf includes insulation between a top and a bottom of the shelf, and a passive heat exchanger that has a heat pipe embedded in the shelf within the insulation and that extends from a front of the shelf to a back of the shelf. Ambient air infiltrating the air curtain initiates passive heat transfer within the plurality of heat tubes.

A cooling apparatus for a medium voltage switchgear includes an evaporator section; a fluid conduit; and a condenser section. The evaporator section surrounds a current carrying contact and is configured such that fluid within the evaporator section can contact an outer surface of the current carrying contact. The evaporator section is fluidly connected to the fluid conduit. At least part of the evaporator section is electrically insulating and is connected to the fluid conduit. The fluid conduit is fluidly connected to the condenser section. In use, a working fluid in the evaporator section is heated to a vapor state, the vapor is transferred by the fluid conduit to the condenser section, and the vapor in the condenser section is condensed to the working fluid. The working fluid is passively returned to the evaporator section.

An energy exchanger for exchanging energy between a hot flow and a cold flow may comprise a hot flow section and a cold flow section, each of the sections comprising the same quantity of channels having variable cross sections. The inlets of the hot flow channels may be juxtaposed to the outlets of the cold flow channels and the outlets of the hot flow channels may be juxtaposed to the inlets of the cold flow channels such that the hot and cold flows move in opposing directions. The energy exchanger may further comprise a liquid distribution system and a common interface between each hot flow channel and a corresponding cold flow channel with an exponentially varying surface area adapted for exchanging latent energy released through condensation in the hot flow section and absorbed through evaporation in the cold flow section.