Patent ID: 9273910
Filing Date: 2016-03-01
CPC Classification: B01D,F28D,F28F

Claim Text:
1. A heat transfer device for removing heat energy from a plurality of electronic components separated from one another, the heat transfer device comprising: a heat exchange structure containing a working fluid in a closed envelope defining an evaporator and a condenser that are coupled by a vapor line and a liquid return line to provide a circulating path for the working fluid, through vaporization of a liquid phase of the working fluid at the evaporator, condensation of a vapor phase of the working fluid at the condenser, and return of the working fluid from the condenser to the evaporator through the liquid return line; wherein the evaporator comprises a bottom wall having a first single planar portion and one or more first side walls defining a reservoir and a second single planar portion and a third single planar portion with each of the second and third single planar portions elevated with respect to the first single planar portion and each of the second and third single planar portions at least partially defining respective evaporation chambers adjacent the reservoir, the evaporation chambers each being further defined by one or more second side walls adjacent the respective second and third single planar portions, the reservoir in flow communication with the liquid return line and positioned below the evaporation chambers, the evaporation chambers in flow communication with the vapor line, each of the second and third single planar portions provides a contact surface for application of heat energy for at least one of the plurality of electronic components and defines an evaporation surface disposed adjacent to and opposite a respective contact surface with the evaporation surfaces spaced apart from one another by the reservoir, and the evaporation chambers are supplied with the liquid phase of the working fluid from the reservoir, wherein each of the second and third single planar portions extends to the reservoir and each of the first, second, and third planar portions extends parallel to one another and orthogonal to the first one or more side walls.