摘要:
[Object] To provide a phase-change-type heat spreader, a flow-path structure, an electronic apparatus including the phase-change-type heat spreader, a flow-path structure used therein, and the like that are capable of improving a thermal efficiency by a phase change and lowering a thermal resistance.[Solving Means] Capillary boards (401 to 404) in which a plurality of openings (408) penetrating the capillary boards are formed on a wall surface constituting grooves (405) in a longitudinal direction of the grooves (405), are laminated while each being rotated 90 degrees to be deviated within an X-Y plane so that the grooves (405) of those layers extend in mutually-orthogonal directions, and the plurality of openings (408) function as a part of a vapor-phase flow path through which a vapor refrigerant evaporated by heat received by a heat-receiving plate circulates.
摘要:
[Object] To provide a low-cost production method for a heat transportation device with which efficient production with a small number of steps is possible.[Solving Means] A capillary member (5) having a larger thickness than a frame member (2) is mounted on an inner surface (11) of a lower plate member (1). Subsequently, the frame member (2) is mounted on the inner surface (11) of the lower plate member (1), and an upper plate member (3) is mounted on the capillary member (5). Due to a difference between the thickness of the capillary member (5) and the thickness of the frame member (2), a squashing amount (G) is provided between the frame member (2) and the upper plate member (3). Then, the lower plate member (1) and the upper plate member (3) are diffusion-bonded with the frame member (2). At this time, the capillary member (5) is compressed by an amount corresponding to the squashing amount (G). Since the capillary member (5) has elasticity, a pressure (P) is partially absorbed, and a pressure (P′) smaller than the pressure (P) is applied to the lower plate member (1) from the capillary member (5). By the pressure (P′), the inner surface (11) of the lower plate member (1) and the capillary member (5) are diffusion-bonded.
摘要:
A plate-type heat transport device and electronic instrument are provided. The plate-type heat transport device includes a heat absorbing plane absorbing heat because of the evaporation of a working fluid, a heat emission plane opposing the heat absorbing plane and emitting heat because of the condensation of the working fluid, and a flow path two-dimensionally arranged between the heat absorbing plane and the heat emission plane to align with the heat absorbing plane and the heat emission plane, the flow path allowing the working fluid to flow therethrough for changing the phase of the working fluid, and the flow path being capable of two-dimensionally diffusing the working fluid by generating a capillary force in the condensed working fluid.
摘要:
According to an embodiment, there is provided a heat spreader including an evaporation portion, a first condenser portion, a working fluid, and a first flow path. The evaporation portion is arranged in a first position. The first condenser portion is arranged in a second position, the second position being arranged apart from and higher than the first position. The working fluid evaporates from a liquid phase to a gas phase in the evaporation portion, and condenses from the gas phase to the liquid phase in the first condenser portion. The first flow path is made of a nanomaterial, has hydrophobicity on a surface, and causes the working fluid condensed to the liquid phase in the first condenser portion to flow to the evaporation portion by a gravitational force.
摘要:
According to an embodiment of the present invention, there is provided a heat transport device including a working fluid, an evaporation portion, a condenser portion, a flow path portion, and an area. The working fluid includes pure water and an organic compound bearing a hydroxyl group. The evaporation portion causes the working fluid to evaporate from a liquid phase to a vapor phase. The condenser portion communicates with the evaporation portion, and causes the working fluid to condense from the vapor phase to the liquid phase. The flow path portion causes the working fluid condensed in the condenser portion to the liquid phase to flow to the evaporation portion. The area is made of a carbon material and provided on at least one of the evaporation portion, the condenser portion, and the flow path portion.
摘要:
A heat-transporting device includes a casing, a working fluid, a first substrate, a second substrate, and a third substrate. The casing includes a first side and a second side opposed to the first side. The working fluid is sealed inside the casing and transports heat by a phase change. The first substrate includes an inlet through which the working fluid is injected and constitutes the first side of the casing. The second substrate is disposed opposite to the first substrate and constitutes the second side of the casing. The third substrate includes a contact portion that is brought into contact with the inlet so that the inlet is sealed when the inlet is pressed, the third substrate being interposed between the first substrate and the second substrate.
摘要:
A heat transport device includes a working fluid, an evaporation portion, a condenser portion, a flow path portion, a concave portion, and a protrusion portion. The evaporation portion causes the working fluid to evaporate from a liquid phase to a vapor phase. The condenser portion communicates with the evaporation portion, and causes the working fluid to condense from the vapor phase to the liquid phase. The flow path portion causes the working fluid condensed in the condenser portion to the liquid phase to flow to the evaporation portion. The concave portion is provided on at least one of the evaporation portion and the flow path portion, in which the liquid-phase working fluid flows. The protrusion portion is made of nanomaterial protruding from an inner wall side surface of the concave portion such that the protrusion portion partially covers an opening surface of the concave portion.
摘要:
According to an embodiment, there is provided a heat spreader including a condenser portion formed of a nanomaterial. The heat spreader further includes a first plate member, a second plate member, and a support portion. The first plate member includes a first surface, the first surface including a first area provided with the condenser portion. The second plate member includes a second surface and is arranged such that the second surface faces the first surface. The support portion protrudes from the first area of the first plate member to the second plate member, and has an end portion that is free from the nanomaterial and is in contact with the second surface of the second plate member.
摘要:
According to an embodiment, there is provided a heat spreader including an evaporation portion, a first condenser portion, a working fluid, and a first flow path. The evaporation portion is arranged in a first position. The first condenser portion is arranged in a second position, the second position being the first position. The working fluid evaporates from a liquid phase to a gas phase in the evaporation portion, and condenses from the gas phase to the liquid phase in the first condenser portion. The first flow path is made of a nanomaterial, has hydrophobicity on a surface, and causes the working fluid condensed to the liquid phase in the first condenser portion to flow to the evaporation portion.
摘要:
[Object] To provide a heat transport device manufacturing method and a heat transport device that has a high hermeticity and is manufactured without increasing a load applied at a time of performing diffusion bonding.[Solving Means] A bonding surface (1a) of an upper member (1) that is subjected to diffusion bonding to a bonding surface (21) of a frame member (2) is formed into a convex shape, which can make a contact area of the bonding surface (1a) and the bonding surface (21) small. Therefore, a pressure (load per unit area) applied to the bonding surfaces (1a and 21) is increased, and thus the diffusion bonding of the bonding surfaces (1a and 21) is performed by a high pressure. Similarly, a bonding surface (3a) of a lower member (3) and a bonding surface (23) of the frame member (2) are also subjected to the diffusion bonding by a high pressure. As a result, a heat transport device (100) having a high hermeticity can be manufactured without increasing an entire load (F) applied at the time of the diffusion bonding.