Abstract: A torsion bar clamp device and method for mounting a heat sink to an electronic component comprising a torsion bar having a longitudinally extending bar and at least one integral lever adapted to engage a heat sink and mounting legs which couple forces imparted by the torsion bar to the heat sink and electronic component such that the heat sink and electronic component are compressively coupled. The invention may be manufactured of injection molded plastic and may be adapted to allow the mounting legs to engage bosses on a socket in which an electronic component is mounted.

Abstract: A method and an arrangement for sensing the clearance between an object and an object-adjacent surface, which is particularly for use in difficult ambient conditions, such as in dirty, corrosive environments and under varying temperature and pressure conditions, e.g. to measure and hold constant the clearance between the sector plates (3, 4) of a regenerative rotary air preheater and the end surfaces of the rotor (2, 8). The sensing device (7) includes a compressed-air operated pipe (9) which is mounted on the object (3, 4) and which includes a sound-emitting opening (14) located adjacent the surface (8), wherein changes in the distance (S) between the object (3, 4) and the surface (8) are represented by changes that occur in the resonant frequency of the pipe (9).

Abstract: A cooling apparatus includes a refrigerant tank having a surface to which heating devices are attached and containing liquid refrigerant which is boiled and evaporated by heat transferred from the heating devices. The refrigerant tank includes a refrigerant chamber, a condensed liquid passage, heat insulating passage, and a communication passage. The heat insulating passage is formed between the condensed liquid passage and the refrigerant chamber. A vapor reverse flow reducing plate having a small hole is provided at the bottom of a lower opening of the heat insulating passage to reduce vaporized refrigerant (bubble) flowing into the refrigerant chamber from the heat insulated passage. Accordingly, the movement of the bubbles from the heat insulating passage to the refrigerant chamber via the communication passage is suppressed, and the heat radiation performance is improved.

Abstract: The present invention relates to a heat transferring device for transferring heat energy from a first gaseous flow into a second gaseous flow. The heat transferring device includes first and second circulating fluidized bed reactors. A first gaseous flow enters the first bed and carries heat transferring particles into a first cyclone. A second gaseous flow enters the second bed and carries heat transferring particles into a second cyclone. The particles accumulated at the bottom of the first cyclone, are presented with a recirculation channel to the first bed and a cross-over channel to the second bed. Likewise, the particles accumulated at the bottom of the second cyclone, are presented with a recirculation channel to the second bed and a cross-over channel to the first bed.

Abstract: A heat sink assembly for use in conjunction with an electronic integrated circuit, such as a chip, comprises a heat sink and a pair of retainers. The heat sink includes a plate defining a large number of fins and a flat bottom surface. A locking protrusion is formed at a proper position of each side of the plate. Each retainer comprises a transition portion, two engaging arms perpendicular to each other, and a nail beneath the transition portion. A rectangular sheath is formed on a distal end of each engaging arm for cooperating with a corresponding locking protrusion. Each nail includes a main body, a neck section, a protruding section and a cone section. A slot is defined through the lower portion of the section and through the protruding section and the cone section.

Abstract: A case which accommodates electronic control circuit is housed in a housing box. An air passage is formed between the case and a main body of the housing box to introduce cooling air for cooling an electronic control circuit in the case. A heat sink is attached to an inner surface of the case by a screw placed in a through hole formed in an area of the case to which the cooling air is not introduced. Accordingly, the electronic control circuit in the case is prevented from dust, water and the like. Further, the electronic control circuit is efficiently cooled down by the cooling air passes through the air passage via the heat sink and the case because an exothermic electronic element of the electronic control circuit is making a contact with the heat sink.

Abstract: A heat exchanger having a side support with a variable compression tab member is disclosed. The tab member engages a brazing fixture used in manufacturing the core and prevents damage to the fins of the core form the brazing fixture.

Abstract: Drive means are provided to move the sector plates of rotary regenerative air preheaters into sealing position with the radial seals on the rotor during rotor turndown. A pair of fluid drive cylinders are connected to a pair of drive chains which rotate a drive shaft. One of the pair of drive cylinders may operate in the extend mode while the other operates in the retract mode or both cylinders may operate in the same mode at the same time for increased force in one direction. Eccentric disk devices are attached to the drive shaft and to the sector plates for converting the rotary motion of the shaft to linear motion of the attachment to the sector plates. The eccentric disk devices may contain two eccentric disks so that the distance of travel can be adjusted.

Abstract: An electronic assembly that may include a two-phase material that absorbs heat generated by an integrated circuit. The heat may be transferred from the integrated circuit to the two-phase material by a heat pipe. The two-phase material can absorb heat in an isothermal process utilizing the latent heat of the material. The isothermal process allows the two-phase material to absorb heat generated by the integrated circuit without raising the temperature of the assembly.

Abstract: The rotor of an existing rotary regenerative air preheater is retrofitted with deeper cold end baskets for general performance enhancement and/or for the tolerance of ammonium bisulfate deposits. the normal cold end support gratings are removed and the support of the cold end baskets of increased depth is at least partially from the existing rotor stay plates.

Abstract: A high watt number heat dissipation module having externally exposed fins is disclosed. The high heat produced by semiconductor operation is dissipated employing the present module, and the packaging rubber body is prevented from overflow. The present module is mounted above the semiconductor wafer and the interior of the heat dissipation plate absorbs the high heat from the wafer, and heat energy is dissipated by means of the fins at the top portion of the heat dissipation plate. A plurality layers of skirts are provided at the surrounding of the heat dissipation plate and the number of layers o the skirts is dependent on the watt number of the wafer.

Abstract: A heat sink including a pedestal. The heat sink is used to dissipate heat from an electrical component such as a processor (e.g., a Pentium® Pro processor). The pedestal is arranged on the heat sink such that a gap which is formed between a surface of the electrical component and the heat sink is maintained to be less than an acceptable gap size. The gap between the heat sink and the electrical component can occur, for example, due to excessive warping of a surface of the electrical component. The excessive warping can be caused, for example, from manufacturing process problems or thermal changes. The pedestal can be arranged on an end of the heat sink facing the electrical component in a manner advantageous to cover a maximum surface area of the electrical component caused due to a particular size and shape of warping which uniquely occurs on a particular type of electrical component.

Abstract: A chill roll for cooling a web is provided and includes a cylindrical outer roll having an inner and an outer surface, the inner surface of the outer roll having circumferential projections spaced at intervals along its length forming circumferential channels therebetween. The chill roll further has a cylindrical inner roll having an inner and an outer surface, and a diameter less than a diameter of the outer cylindrical roll and defining an annular space between the outer surface of the cylindrical inner roll and the inner surface of the cylindrical outer roll, allowing a coolant material to flow into and out of the circumferential channels and to contact the inner surface of the cylindrical outer roll to uniformly cool the outer surface of the cylindrical outer roll.

Abstract: A heat recovery ventilator comprising four rectangular regenerative heat exchangers, two blowers, a rotating air switch all disposed in a compact rectangular housing. The regenerative heat exchangers are stationary with stationary seals between the outside and inside climate. One of the blowers blows a stale airstream out through the heat exchangers; the other blower blows a fresh airstream in through the heat exchangers. The rotating air switch operates in conjunction with the two blowers producing the necessary flow reversal through each regenerative heat exchanger to allow heat and moisture exchange between the stale airstream and the fresh airstream. The rotating air switch is completely on the inside climate side of the regenerative heat exchangers preventing freeze up in cold weather. The rotating air switch uses clearance seals. A high efficiency particulate air filtration filter may be disposed within the housing in the path of the fresh airstream.

Abstract: A cooling element for shaft furnaces provided with a refractory lining, particularly blast furnaces is made of copper or a low copper alloy and is provided with coolant ducts arranged in the interior of the element. The cooling element is composed of an extruded or rolled section which in the interior thereof has a plurality of cooling ducts which are round or have a shape which deviates from the circular shape. The cooling element is provided with lateral webs. The cooling element is equipped on the side facing away from the blast furnace wall in vertical direction with at least one continuous slag rib and the cooling element is equipped on the side facing the blast furnace wall with at least one fastening rib.

Abstract: In a heat-exchange unit 1a constituting a chief portion of an indirect heat exchanger 1, the streams of hot medium that flow through many small flow passages 20 in the flat tubes 2 in the upstream heat-exchange set 5, meet together in the tubular headers 4 for each of the flat tubes 2 and, then, flow again into many small flow passages 20 in the flat tubes 2 in the downstream heat-exchange set 6. Even in case some of the small flow passages 20 are clogged or constricted, all the small flow passages 20 from the upstream common header 71 to the downstream common header 72 do not become incapable of exchanging heat and do not lose the function for exchanging heat, and most of the area of the upstream side and of the downstream side can be normally used.

Abstract: An electronic device has at least one component that is capable of generating a quantity of heat. The electronic device further has an air-moving device and an air duct. The air moving device is capable of creating a flow of air that removes a portion of the quantity of heat. The flow of air enters the air duct. The air duct has a restriction chamber that includes a venturi vent in which the flow of air into the duct and through the restriction chamber creates a new flow of air into the venturi vent. The new flow of air into the venturi vent does not pass over the at least one component in the electronic device.

Abstract: Disclosed is a casing for an electronic device which includes a heat dissipation layer, inner and outer insulative layers along either side of the heat dissipation layer, and a heat pipe which has a portion in thermal-transfer contact with the heat dissipation layer. The heat dissipation layer has a thermal conductivity in a first range whereas the insulative layers have a thermal conductivity in a different, lower range. Preferably, the inner layer is either thicker than the outer layer, has a lower thermal conductivity than the outer layer, or both. Vent holes can be provided through the heat dissipation layer, and, if so, the holes are preferably covered by either the inner or outer layers. Only a portion of the casing need have the foregoing heat dissipation layer, inner and outer insulative layers, and heat pipe.

Abstract: A heating sheet bundle to be mounted tangentially or radially in trapezoidally segmented cells of heating surface carriers of regenerative heat exchangers with stationary or revolving storage masses is composed of a plurality of profiled sheets which are stacked on top of each other and are held together so as to form passage ducts therebetween. On at least two oppositely located sides of the bundle, at least the two outer profiled sheets are constructed as a pair of sheets connected in a dimensionally stable, sandwich-like manner. One of the profiled sheets of the pair of profiled sheets is undulated and the other of the profiled sheets of the pair of profiled sheets is corrugated, wherein the rolling depth of the undulated sheet is greater than the rolling depth of the corrugated sheet.

Abstract: A notebook computer has a base housing with a heat-generating microprocessor therein, and a lid housing pivotally connected to the base housing. Operating heat from the microprocessor is transferred to the lid housing, for dissipation therefrom, via a specially designed thermosyphoning heat pipe structure formed from first and second heat pipes. The first heat pipe representatively has a rectangular cross-section, an evaporating portion thermally communicated with the microprocessor, and a coiled condensing portion centered about the lid hinge line and having a circularly cross-sectioned interior side surface portion defined by flat sides of the first heat pipe. The second heat pipe has a circular cross-section, an evaporating portion pivotally received within the coiled first heat pipe portion, and a condensing portion thermally communicated with the lid housing.