A vapor chamber structure includes a thin-sheet housing with a hollow interior and a composite capillary layer installed in the thin-sheet housing. The composite capillary layer is a metal woven mesh formed by weaving plural metal filaments, and each metal filament of the composite capillary layer is a steel wire having a coating layer on the exterior of the steel wire. By pulling and drawing the steel into a linear shape, a smaller wire diameter is obtained, so that the composite capillary layer will not be broken easily and can be used for making a finer woven mesh which can be installed in a thinner vapor chamber.

A heat dissipation device includes two titanium metal sheets, which are subjected to a heat treatment before undergoing mechanical processing, plastic working and surface modification. With these arrangements, the titanium metal sheets can be freely plastically deformed and possess a capillary force, and can therefore be used in place of the conventional copper material to serve as a material for making heat dissipation devices, and the heat dissipation devices so produced can have largely reduced weight and largely improved heat dissipation performance.

The present application discloses two-phase cooling devices that may include at least three substrates: a metal with a wicking structure, an intermediate substrate and a backplane. The titanium thermal module may be adapted for use in a mobile device, such as a portable device or smartphone, where it may offer compelling performance advantages. The thermal module may also have a metal layer which may act as a shield for radiation or an antenna for radiation, or may add mechanical strength to the thermal module.

The disclosure relates to a heat exchanger comprising a central body with a first set of channels and a second set of channels extending along a main direction through the central body, wherein, in the central body, in any cross-section across the main direction, the channels of the first and second sets form a checkered pattern in said cross-sections, wherein the heat exchanger further comprises two inner transition portions, wherein, in respective inner transition portion, among the rows extending along a first direction, are every second, counted along a second direction, row provided with channels being along the main direction increasingly shifted in position in a first direction relative to the other channels such that the checkered pattern of channels is transformed into a line pattern.

A case heat dissipation unit of handheld electronic device includes a back cover including a ceramic layer. A titanium metal layer or a stainless steel metal layer is disposed on the ceramic layer in a position corresponding to at least one heat source. The ceramic layer is an outer surface of the handheld electronic device and exposed to an external environment. The titanium metal layer or the stainless steel metal layer faces a receiving space of the handheld electronic device in contact with the heat source in the receiving space. The titanium metal layer or the stainless steel metal layer serves to absorb the heat generated by the heat source and transfer the heat to the ceramic layer for dissipating the heat.

Various embodiments include heat exchangers and methods of making heat exchangers from a series of stacked plates each made of two foil sheets bonded together in bonding locations forming fluid flow passages between the foil sheets in regions where the foil sheets are not bonded. An inlet port and an outlet port located at opposite ends of the planar extent of the two foil sheets extend through the foil sheets perpendicular to the planar extent of the foil sheets. The inlet and outlet ports provide access for a first fluid to flow into or out of the internal plate passages formed between the two foil sheets. Interstitial channels are formed between the series of plates and configured to allow the flow of a second fluid between the series of plates, allowing heat to be transferred between the two fluids while isolating the two fluids from one another.

The present application discloses two-phase cooling devices that may include at least three substrates: a metal with a wicking structure, an intermediate substrate and a backplane. A fluid may be contained within the wicking structure and vapor cavity for transporting thermal energy from one region of the thermal ground plane to another region of the thermal ground plane, wherein the fluid may be driven by capillary forces within the wicking structure. The titanium thermal ground plane may be adapted for use in a mobile device, such as a portable device or smartphone, where it may offer compelling performance advantages.

A heat exchanger includes a core defining a first passageway configured for a first fluid to flow through and a second passageway configured for a second fluid to flow through. The core includes a plurality of unit cells coupled together. Each unit cell of the plurality of unit cells includes a sidewall at least partly defining a first passageway portion, a second passageway portion, a plurality of first openings for the first fluid to flow through, and a plurality of second openings for the second fluid to flow through. Each unit cell of the plurality of unit cells is configured to enable the first fluid to combine and divide in the first passageway portion. Each unit cell is further configured to enable the second fluid to combine and divide in the second passageway portion.

A heat dissipation device includes a main body and at least one heat conduction member. The main body has a top face. A periphery of the top face has a connection section. One end of the heat conduction member is correspondingly in contact and connection with the top face or the connection section. By means of the structure design of the present invention, the horizontal heat dissipation effect is greatly enhanced and the heat dissipation effect of the entire heat dissipation device is greatly enhanced.

A method of manufacturing a heat exchanger comprising a body and a support embedded within the body. The support comprises a different material and/or a different material structure to the body and hence has at least one material property which is different to that of the body. The method comprises; forming at least a first portion of the support with a first material and a first material structure using a first additive manufacturing step; and forming at least a first portion of the body with a second material and a second material structure using a second additive manufacturing step. The first material is different to the second material and/or the first material structure is different to the second material structure.