A heat spreading apparatus (20) includes a first planar body (22) for attachment to a heat generating surface and a second planar body (21) connected to the first planar body (22) defining a void therebetween. The void contains a vaporizing fluid and includes a planar capillary path (50) and a non-capillary path (32).

Thin, planar heat spreader

A modular door mounted heat exchanger (10) for use with an outdoor equipment enclosure (12) of the type having a sealed equipment compartment (22) used to house heat generating electronics and telecommunications equipment (29) therein is disclosed. The heat exchanger includes a door panel (33) sized and shaped to be received on, and to close an access opening (20) defined as a part of the equipment enclosure. The door panel has an interior surface (34) for facing inwardly of the enclosure, and an exterior surface (36) for facing outwardly of the enclosure. A heat exchanger cover (37) constructed and arranged to be mounted to the exterior surface of the door panel is provided. The heat exchanger cover defines a plenum (38) between the exterior surface of the door panel and the heat exchanger cover. At least a first opening (40) and at least a spaced second opening (41) are defined within the plenum for defining an air flow path (44, 45) passing within and at least partially along the plenum. At least one fan (42, 48, 79) is provided for drawing air into and exhausting air out of the plenum through the at least first and second openings, respectively. The fan is constructed and arranged to draw outside air through the plenum for cooling the exterior surface of the door panel, so that the air within the enclosure that comes into contact with the interior surface of the door panel is in turn cooled.

Door mounted heat exchanger for outdoor equipment enclosure

According to the present invention, a cooling apparatus using boiling and condensing refrigerant, includes a fluid separating plate for separating a high-temperature fluid from a low-temperature fluid, a refrigerant tank disposed on the side of the high-temperature fluid from the fluid separating plate, a refrigerant sealed into the refrigerant tank, a pair of communication pipes, one end of which is communicated with the refrigerant tank hermetically, a condensing portion communicated with the other end of the communication pipes and disposed on the side of the low-temperature fluid from the fluid separating plate, and a heat insulating material as a high-temperature portion-side heat insulating material coated on the outer periphery of the high-temperature-side communication pipe. In this way, it is possible to suppress a heat conduction from a high-temperature portion (high-temperature air) to the high-temperature-side communication pipe. As a result, it is possible to prevent the descending refrigerant which has been condensed and liquefied in the radiator from receiving heat from the high-temperature portion through the high-temperature-side communication pipe to receive an ascending force in the high-temperature-side communication pipe.

Cooling apparatus using boiling and condensing refrigerant

An electrical equipment cabinet utilizes a door-mounted, air-to-air heat exchanger for providing cooling to the equipment housed in the cabinet while maintaining a closed or sealed environment within the cabinet. An arrangement of ducts and vents is used to force interior and exterior air through the heat exchanger using powered fans mounted within the main portion of the cabinet. The mounting of the heat exchanger on or within the door of the cabinet makes more efficient use of the space available within the cabinet, and the placement of the fans within the main portion of the cabinet protects them from damage and avoids the need to provide electrical power to the door.

Electrical cabinet with door-mounted heat exchanger

A heat dissipation device includes a primary heat sink ( 10 ) contacting a central processing unit and a secondary heat sink ( 20 ) attached on heat-generating electronic components adjacent the central processing unit. The primary heat sink includes a base ( 12 ) and a heat-dissipation portion ( 14 ) disposed on a middle of the base. The secondary heat sink includes a substrate ( 22 ) and a plurality of fin assemblies ( 24 ) arranged on the substrate. The base is laid on the substrate with the fin assemblies arranged around the heat-dissipation portion. The primary heat sink is partly superposed on the secondary heat sink with a compact structure. The heat-dissipation portion can simultaneously dissipate heat from the central processing unit and its adjacent heat-generating electronic components.

Heat dissipation device

A cooling apparatus for a housing which is provided with an opening at the upper part thereof, comprises a casing located on the upper part of the housing and including a bottom plate to close the opening and a chamber, a partition wall provided in the casing to divide the chamber into a first chamber section and a second chamber section, heat exchanger including at least one heat pipe provided in the casing through the partition wall with coolant therein for exchanging heat in the first chamber section with heat in the second chamber section. The heat pipe has one end portion in the first chamber section and the other end portion in the second chamber section, and inclines with the one end portion located lower than the other end portion.

Cooling apparatus for a closed housing

A heat-pipe system of the two-phase fluid loop type comprising a liquid duct as a main loop for circulating a working fluid in liquid phase by a pump, an evaporator having a first capillary structure to which the working fluid is supplied from high pressure side of the main loop, a condenser having a second capillary structure for returning liquid condensate to the low pressure side of the man loop after radiating heat in the condenser, and a bypass pipe connected between the evaporator and the radiator for transporting vapor evaporated in the evaporator through its capillary structure to the second capillary of the condenser. With this construction, since the working fluid is circulated by the pump while the supply of the liquid corresponding to that evaporated in the capillary structure of the evaporator is carried out by the capillary force in the evaporator, a large amount of heat can be transported over long distances. A method of and apparatus for controlling a flow rate of a working fluid in a liquid duct of the heat-pipe system is also disclosed.

Heat-pipe system and method of and apparatus for controlling a flow rate of a working fluid in a liquid pipe of the heat pipe system

PURPOSE: To enable highly efficient refrigeration by providing a heat pipe reclining and placing a refrigerating device on the top part of a box where the temperature is the highest CONSTITUTION: A refrigerating device can be placed on a box 21 since a heat pipe 32 is mounted with its end lower at the side of the first chamber The air in the box 21 sucked into the first chamber 26a is heated to a high temperature by equipment inside This air is cooled by heating up the evaporator part of the heat pipe 32 The heat pipe 32 transfers the heat taken out of air to the evaporator in the second chamber 26b and the heat is expelled by outer air flowing inside the second chamber 26b thus providing highly efficient refrigeration COPYRIGHT: (C)1982,JPO&Japio

Refrigerating device for closed box

of EP0075683A reactor vessel comprising heat-propagating means such as a heat pipe (10) which is provided in contact with or apart from a peripheral wall (11) of a reactor vessel body or inside of said peripheral wall (11), whose upper portion lies above a free liquid level (13) of a coolant and whose lower portion lies below said free liquid level (13), thereby enabling temperature prevailing in that portion of the reactor vessel peripheral wall (11) which lies near the free liquid level of a coolant heated by a reactor core (12) to have a gentle gradient.

Yoshiro Miyazaki

Papers

Cooling apparatus for a closed housing

Heat-pipe system and method of and apparatus for controlling a flow rate of a working fluid in a liquid pipe of the heat pipe system

Refrigerating device for closed box

Fast breeder nuclear reactor vessel