Abstract: A cooler for the water circulation system of a combustion engine has a motor driven pump mounted directly on the cooler and connected via a flat surface with a plate provided with a three-way valve. The flat surface has an inlet and outlet connected to the plate.

Abstract: The present invention provides an apparatus (200) that includes a heat-generating component (202) and a heat-dissipating apparatus (120). The heat-generating component (202) is mounted on a substrate (204). The heat-dissipating apparatus (120) includes a housing piece (100) that includes a sealed chamber (102) and a phase change material (106) disposed within the sealed chamber (102). The heat-dissipating apparatus (120) is thermally coupled to the heat-generating component (202) and provides for heat dissipation by an endothermic process of changing phase from solid to liquid, thereby lowering the operating temperature of the heat-generating component (202).

Abstract: A connecting structure for connecting a radiator having a reinforcement member and a condenser having a bracket is provided. The structure includes a connecting member having a spacer portion and a holding portion integrally formed on opposite sides of a notch. The spacer portion is fittingly inserted into the reinforcement member, and a folded portion of the reinforcement member and the condenser bracket are inserted into the notch. A bolt is inserted through the reinforcement member, the spacer portion, the bracket and the holding portion and a nut is screwed onto a tip of the bolt for clamping the radiator and the condenser together.

Abstract: Self-enclosing heat exchangers are made from stacked plates having raised peripheral flanges on one side of the plates and continuous peripheral ridges on the other side of the plates, so that when the plates are put together, fully enclosed alternating flow channels are provided between the plates. The plates have raised bosses defining flow ports that line-up in the stacked plates to form manifolds for the flow of heat exchange fluids through alternate plates. Rib and groove barriers are formed in the plates inside the peripheral flanges and ridges. The barriers prevent short circuit flow on one side of the plates and promote flow to remote areas on the other side of the plates, to improve the overall efficiency of the heat exchangers.

Abstract: A heat sink with a multi-layer dispersion space is directly molded to form an upper and a lower flowing layer. A twin fan design is incorporated into the main body of the heat whereby a pair of centered circular recesses respectively formed for the reception of the cooling fans in the main body of the heat sink. In addition, fan supporters are fixed within the respective circular recesses in order to anchor said cooling fans to the main body of the heat sink; wherein each fan supporter comprises a stopping plate for diverting flow from the lower flowing layer tangentially from the respective fan recess.

Abstract: First heat-transfer plates S1 and second heat-transfer plates S2 are radially arranged between a larger diameter cylindrical-shaped outer casing 6 and a smaller diameter cylindrical-shaped inner casing 7 to form combustion gas passages 4 and air passages 5 alternately in a circumferential direction, and a multiplicity of projections 22, 23 formed on both surfaces of the first heat-transfer plates S1 and second heat-transfer plates S2 are jointed to one another at tip ends thereof. Pitches P between adjacent projections 22, 23 are changed in a radial direction to make the number of heat transfer units substantially constant in a radial direction to uniformize temperature distributions on the first heat-transfer plates S1 and second heat-transfer plates S2 in the radial direction, thereby avoiding a decrease in heat exchanging efficiency and generation of unwanted thermal stress.

Abstract: The invention provides a heat sink for cooling and electronic device. The heat sink includes a member, and a heat pipe secured to the member. The member has a first portion, a second portion, and a plurality of fins on the second portion. The heat pipe has a first, evaporator section and a second, condenser section. The first section is located at the first portion so that heat can be transferred thereto from a heat generating component of the electronic device. The second section is located at the second portion so that heat can be transferred therefrom to the second portion.

Abstract: A heat exchanger in which refrigerant flows has a first core portion disposed in a first air passage for exchanging heat with inside air and a second core portion for exchanging heat with outside air. The second core portion is disposed at a downstream side of the first core portion in a refrigerant flow direction. Accordingly, refrigerant exchanges heat with inside air, first, and then exchanges heat with outside air, a temperature of which is lower than that of inside air. Further, refrigerant flows to form an opposed flow with respect to an air flow direction in the respective first and second core portions. As a result, heating performance of the heat exchanger is improved.

Abstract: A cooling apparatus comprising an air-cooled heat exchanger, a plurality of louvres to control a cooling air flow passing the heat exchanger, a mechanism for operating the louvres and means for actuating the operating mechanism according to temperature of the heat exchanger. The actuating means comprises a bar having a first end and a second end and being of a material having a considerably lower thermal expansion coefficient than that of the heat exchanger, said bar being attached by its first end substantially at a first end of the heat exchanger, and means for controlling the position of the operating mechanism in dependence on a difference in displacements of the second end.

Abstract: A heat exchanger for an automobile radiator having a matrix of tubes extending through a stack of fins. The matrix has lateral faces having free edges of the fins which are protected by a side cover. The side cover comprises a spine portion and two side branches terminated in anchor hooks which engage with lateral notches on the fins. The spine portion is substantially flat and has on its internal face a longitudinal rib, which makes contact with the free edges of the fins.

Abstract: A heat exchanger tube having an internal surface that is configured to enhance the heat transfer performance of the tube. The internal enhancement has a plurality of polyhedrons extending from the inner wall of the tubing. The polyhedrons have first and second planar faces disposed substantially parallel to the polyhedral axis. The polyhedrons have third and fourth faces disposed at an angle oblique to the longitudinal axis of the tube. The resulting surface increases the internal surface area of the tube and the turbulence characteristics of the surface, and thus, increases the heat transfer performance of the tube.

Abstract: A sideplate for a heat exchanger has a double-folded flange on both sides of an elongate web portion. The sideplate has braze cladding on one side only, to prevent discoloration problems during brazing.

Abstract: A heat sink includes a base having a plurality of ribs formed thereon and defining a plurality of grooves therebetween, and a folded fin member having a plurality of side walls connected by alternately arranged top and bottom walls. The folded fin member is mounted to the base by inserting the bottom walls thereof into the grooves of the base to directly contact a top surface of the base. Thermal grease, wax, or tape is interposed between the bottom walls of the folded fin member and the top surface of the base for enhancing heat transfer therebetween. Each rib of the base has two corrugated inside faces and each side wall of the folded fin member has at least one inclined tab extending therefrom for engaging with the corresponding corrugated inside face of the ribs of the base thereby securing the folded fin member to the base.

Abstract: In boiling heat transfer tube, fins 2 are provided on an outer surface of the tube body 1 in a manner such that the fins 2 each extend in a peripheral direction of the tube and a direction inclined to the tube axis at a pitch P2 in the tube axial direction. Protrusions 4 and recesses 5 are alternately formed in a length direction of a fin, a protrusion coming after a recess or vice versa, by being pressed. Opening 6 widths at the top ends of the cavity 3 between an adjacent pair of fins 2 are narrowed by inward jutting-out of the fins at both recesses 5 and protrusions 4. A profile of each of the protrusions in section perpendicular to the tube axis assumes a trapezoid. An opening width (W) between protrusions in section including the tube axis is 0.13 mm<W ≦0.40 mm, an angle (&thgr;) formed between opposed side surfaces of each recess in section perpendicular to the tube axis is 55 degrees or less. A pitch (P1) of the recesses or the protrusions in section perpendicular to the tube axis is 0.

Abstract: A heat transfer tube having an inner surface provided with a dense pattern of polyhedrons having crack-like cavities on at least two surfaces of a single polyhedron, forming three-dimensional crack-like cavities that enhance flow evaporation heat transfer. The tube is made by (a) forming in an inner surface for the tube a plurality of generally parallel first grooves, (b) forming in the inner surface and over the first grooves a plurality of generally parallel second fins extending at a first angle of between 0 and about 25 degrees relative to a longitudinal axis for the tube to thereby devolve the second angle fins into the pattern of cavities, and (c) forming in the second fins a pattern of generally parallel crosshatches extending cross-wise thereto.

Abstract: A heat radiating device for a notebook includes a metallic heat sink having multiple first fins mounted therein, a support base attached to the metallic heat sink and containing a recess therein, the support base having a first side abutting the first fins and a second side containing a grille-shaped air discharge port, multiple second fins received in the recess and each having a height smaller than the depth of the recess, and a fan including a support plate secured on the support base and containing a hole, a bracket mounted on the support plate and received in the recess, and a fan body rotatably mounted on the support bracket.

Abstract: A heat absorbent device is comprised of a container filled with a phase change material selected to melt at about 75° F. It is arranged to be installed in a room with business critical electronics equipment that requires constant cooling by a cooling system, typically, to about 72° F. In some embodiments, the container is comprised of a container for attaching to a T-rail of a ceiling tile system. In another embodiment, the container is comprised of a container with hooks for attaching to holes on computer cabinets. In yet another embodiment, the container is comprised of a ceiling tile with a plurality of individually sealed cells containing the phase change material. In the event of a cooling system failure and rapidly rising room temperature, the phase change material will begin absorbing heat and cooling the room when the room temperature has reached its melting point.

Abstract: An oil cooler 11 comprises oil channel members 2A arranged one above another in parallel at a spacing and each composed of a pair of plates 20A, each of the plates 20A having a hole 21 at each of opposite ends thereof and a channel portion 22 between the end holes 21, the pair of plates 20A being joined with recessed surfaces of their channel portions 22 opposed to each other to form the oil channel member 2A; and annular header members 4A each interposed between each pair of adjacent oil channel members 2A at each of opposite lateral ends of the cooler.

Abstract: The present invention relates to an improved system and method for cooling electronic devices. The present system is particularly adapted for cooling computer equipment. The system comprises a sealed enclosure which houses one or more heat generating electronic devices; a blower; and a heat exchanger. The sealed enclosure may be pressurized with a gas medium such as dry nitrogen up to a pressure of approximately two atmospheres. The elevated pressure increases the gas density, effectively increasing the mass flow rate and heat carrying capacity of the gas. The blower is also a constant volume device such that it can move the same volume of gas regardless of density. Accordingly, for a given heat load, the size of the blower may be reduced. Or, alternatively, a given blower can cool a device having a higher heat load. Finally, by pressurizing the enclosure, the present invention eliminates the need to size a forced air cooling system based on high elevation requirements.

Abstract: In an air conditioning condenser having a fluid tank with interchangeable cartridge the tank is screwed axially into a connecting base which is in turn brazed to a header box of the condenser. It contains an interchangeable axial cartridge and is in communication with the header box through ducts provided in the connecting base. Applications include apparatus for air conditioning the passenger space of a motor vehicle.