Patent ID: 8622118
Filing Date: 2014-01-07
Classification: F28D,H01L

Abstract:
1. A loop heat pipe comprising: an evaporator comprising a bottom plate, a cover plate parallel to the bottom plate, and a peripheral side plate between the bottom plate and the cover plate; a condenser; a vapor line and a liquid line each connecting the evaporator with the condenser, thereby forming a closed loop; a working medium contained in the closed loop; and a wick structure received in the evaporator, the wick structure comprising a bottom wall in contact with the bottom plate, a support wall extending up from the bottom wall and contacting the cover plate, and a plurality of guide walls extending out laterally from the support wall, the support wall separating an interior of the evaporator into a liquid chamber adjacent to the liquid line and a vapor chamber adjacent to the vapor line, the guide walls located in the vapor chamber, a plurality of guide channels defined between the guide walls for guiding the working medium in a vapor state to flow from the vapor chamber through the vapor line to the condenser; wherein one portion of the side plate defines a liquid inlet connecting the liquid line, and another opposite portion of the side plate defines a vapor outlet connecting the vapor line, the support wall is a four-sided wall comprising a first wall, a second wall, a third wall and a fourth wall, the first, second, third and fourth walls surrounding the liquid chamber, the first wall abuts the portion of the side plate which defines the liquid inlet, and a cutout aligned with the liquid inlet is defined in the first wall, and the cutout extends substantially along the height of the first wall.