Abstract: An improved heat transfer means provides for a dual corrugated fin material which improves heat transfer by increasing the surface area of the fin without a corresponding increase in volume. The improved heat transfer means comprises a fin generated from a flat sheet of metal. The fin includes a first corrugated pattern having a first height, and a second corrugated pattern having a second height, wherein the first pattern is integral in the second pattern and the first height is less than the second height.

Abstract: A heat exchanger combines a lanced fin surface with a ruffled fin surface to create a lanced ruffled turbulizer. The lanced ruffled turbulizer combines the turbulence generated by lancing the heat transfer or turbulizer surface to the deflection forces on the fluid stream generated by a ruffled turbulizer to improve the thermal performance of the heat exchanger.

Abstract: A method and apparatus adaptable for use with bottled water dispensing systems thermoelectrically cools the bottled water contained in a bottle which is positioned in a water receptacle within a housing. The bottled water cooling units include a heat sink having a plurality of fins, preferably of a corrugated configuration, secured to and extending outwardly from the first side of a base plate. At least one thermoelectric chip, being connectable to an electrical energy source and having a cold side and a hot side, is bonded to the second side of the base plate, wherein the cold side of the chip is in contact with the water receptacle to lower the temperature of the water contained in and flowing through the receptacle, and the hot side of the chip is in direct contact with the heat sink base plate. A fan is provided to circulate air through the plurality of fins of the heat sink.

Abstract: A heat sink is created from a single or multiple lengths of compressed, corrugated fin, eliminating the need for a heat sink base plate. A length of corrugated fin is compressed in a fixturing operation to form a continuous top flat surface and a continuous bottom flat surface. After the fixturing operation, a bonding operation is performed to generate permanent continuous top and bottom flat surfaces on which elements requiring temperature control may be mounted directly, eliminating the cost and weight of a base plate.

Abstract: A housing for enclosing motorized appliances consists of a structure constructed of noise absorbing materials. A door on the housing, when closed, activates internal circuitry for supplying power to the enclosed appliance. The housing absorbs much of the noise generated during operation of the appliance, allowing conversation and entertainment to continue in a normal manner without noise interruption from the appliance.

Abstract: A holding fixture for use in the brazing of heat exchangers applying multiple holding pressures, two of which are in senses opposed to one another. Cage members mount a heat exchanger between them and are biased in a separating sense. At the same time they incorporate apparatus to apply a clamping pressure essentially within respective cage members. Fixture mechanism includes a detachable part useful as a reactant member in application of the clamping pressure and as a dynamic retainer in applying a pressure in conjunction with a separating motion of the cage members. The invention has method aspects related to brazing in the presence of multiple applied pressures.

Abstract: A fluid circulating system including a pump and an accumulator-reservoir device of the bootstrap type in which operation of the pump energizes the device to maintain a pressurized system despite an increasing fluid density caused by lowering fluid temperatures. A light spring force is applied which establishes a minimal system pressure effective even when the pump is shut off and which maintains in its proper convolution a rolling diaphragm comprised in the accumulator-reservoir device.