A heat sink for dissipating heat generated by an integrated circuit package includes a flat base 10, two vertical U-shaped heat pipes 20 and a heat dissipation body. The heat dissipation body includes a pair of side plates 40 and a plurality of fins 50 sandwiched between the side plates 40. Each heat pipe 20 has a horizontal heat absorbing portion 22 attached to the base 10, and two heat dissipation portions 24 extending perpendicularly from opposite ends of the heat absorbing portion 22 and thr...

A heat sink with heat pipes includes a base (10). The base includes a bottom surface contacting a heat-generating component (40), an upper surface opposite to the bottom surface, and a plurality of grooves (14) defined on the upper surface of the base. The heat sink further includes two heat pipes (32, 36) received in the grooves, each heat pipe comprising an evaporating section (322, 362) and a condensing section (324, 364) respectively, wherein the evaporating sections of the heat pipes are cl...

A heat sink includes a base (10) and heat pipes (20). The base includes a bottom surface contacting with a heat-generating electronic component (100), an upper surface defining grooves (12) receiving the heat pipes therein. Evaporating sections (22) of the heat pipes are located near a first end portion (10a) and condensing sections (24) of the heat pipes are located near a second end portion (10b) of the base. A first fin assembly (30) is mounted on the upper surface and a second fin assembly (...

An internal combustion engine has a compression cylinder with a liquid spray apparatus for spraying sufficient liquid into the cylinder such that the liquid absorbs the heat of the gas as it is compressed without vaporizing. A separator removes the liquid from the gas/liquid mixture as it leaves the cylinder. The gas is then directed to a expansion cylinder for combustion with fuel delivered by a fuel supply apparatus. The cylinders being coupled together by a crankshaft.

A heat engine is constructed from sheet metal and the like. The heat engine has an outer container and inner container which contains a displacer and a power piston. A plurality of positioning members are provided to dimensionally stabilize the inner and outer containers. By providing positioning members that extend between the inner and the outer containers, a sandwiched construction is obtained which allows the inner and outer containers to reinforce each other thus permitting the use of thin ...

A detachable heat bonnet for mounting over and around a conventional heat pump which confines and electrically heats air confined in spaced areas between the enclosure means and the exterior surfaces of the heat pump. This supplementary heat supplied by a small, high capacity electrical heater, prevents the actuating of the auxiliary heat strips of the heat pump, when the coolness of the inside air calls for the heating cycle.

The invention concerns controllable liquid line to suction line heat exchangers for use in reversible cycle heat pumps.

An improved heat pump having supplementary electric heat and a bypass feature protecting the outside coil from icing. The heat pump operates conventionally during space cooling. When employed for heating purposes, operation is conventional above the critical ambient temperature below which the heat pump is ineffective. Below this critical ambient temperature, an electric heater heats refrigerant which then proceeds through a conventional vapor compression and heat exchange cycle. However, frigid...

A heat pipe heat exchanger utilizing a working fluid such as water incorporates heating means for preventing the freezing of the working fluid when the heat exchanger is non-operational. These heating means are located at or near the heat pipe in the lower region of the heat exchanger so as to prevent the freezing of the working fluid. Trapped gases within the heat pipe caused by the reaction of the working fluid with the metallurgy of the pipe are released by heating the working fluid with the ...

A heat pipe has at least one liquid flow channel and one vapor flow channel for the movement of the heat carrier fluid from the evaporator end to the condenser end and vice versa. The liquid flow channel is so constructed that the capillary radius of its cross-sectional area increases from the evaporator end to the condenser end of the heat pipe, preferably in a continuous manner. Further, the evaporator end of the pipe is provided with a closure member for communicating the liquid flow channel ...