Abstract: An evaporator used in a vehicle air conditioner has vertical plates with a hybrid corrugated fin between the plates. The leading section of the fin as horizontally oriented corrugations, as is normal, while the trailing section has vertically oriented corrugations. Air passes through louvers in the vertical corrugations, and their vertical orientation aids in water drainage.

Abstract: A heat exchanger includes a core adapted to heat air with counter-flowing hot gases. Substantially isothermal hot and cool portions of the core are interconnected by a matrix portion exposed to a temperature gradient. A top sheet is positioned over the core and includes first and second ends and a middle portion between the first and second ends. The middle portion includes a window and compliant ligament portions extending alongside the window and interconnecting the first and second ends. The first and second ends of the top sheet are positioned over the isothermal cool and hot portions of the core, respectively, and the middle portion of the top sheet is positioned over the matrix portion of the core. The compliant ligament portions of the top sheet are deflectable in response to the temperature gradient across the matrix portion of the core to reduce strain on and deflection of the first and second ends of the top sheet.

Abstract: A radial flow heat exchanger for heating or cooling a fluid includes a sealed fluid manifold for passage of fluid. A sealed fluid receiving hub is spaced interiorly of the interior peripheral portion of the manifold and includes a passageway for passage of fluid into or out of the heat exchanger. A plurality of separate and spaced fluid flow tubes are disposed between the manifold and the hub. Each of the tubes are in sealed fluid communication with the manifold at one end and the other end is in sealed fluid communication with the hub. A fin assembly is positioned between the manifold and the hub and includes a heat conducting material arranged at spaced intervals between the manifold and the hub, the heat conducting material including a plurality of spaced apertures through which tubes pass.

Abstract: A CPU cooling device with a mounting mechanism has at least one pair of wedge members. The wedge member has a positioning end for passing through a through hole of a vertical plate, a protruding block, a snapping plate for retaining a fixing frame by means of engagement of a distal snapping end on the snapping plate and a flange of the fixing frame, and an embedding plate for locking a radiator by inserting the embedding plate into a groove on a ledge of the radiator.

Abstract: The present invention provides a wind cover locking element structure of heat radiator comprising a locking element, a heat radiator, a wind cover, and a socket. Projective sheet bodies are disposed at both sides of openings on two sideboards of the wind cover. The sheet bodies have abutting and positioning functions. When the locking element and the socket are locked together, the sheet bodies can abut against the locking portions of the locking element so as to be positioned, thereby reducing the shift between the locking element and the heat radiator. The heat radiator can thus be accurately stuck on a CPU.

Abstract: A heating, ventilation and/or air-conditioning device has a heat exchanger consisting of a stack of orientation plates (1, 20) having a first and a second opposite longitudinal ends, certain orientation plates having separation elements intended to divert a flow of cooling liquid circulating in an axial direction of the heat exchanger so as to direct it to a channel region in which it travels from one said end to the other in a longitudinal direction of the orientation plates (1, 20). At least one separation element has at least one stiffening means (26′) integral at least with one region of said separation element (6, 26).

Abstract: A continuous combination fin for a heat exchanger includes a base wall having a first portion, a second portion and a third portion. The continuous combination fin also includes a plurality of entrance louvers in the first portion extending outwardly at a predetermined angle in a first direction from the base wall. The continuous combination fin includes a plurality of exit louvers in the third portion extending outwardly at a predetermined angle in a second direction from the base wall reversed from the first direction. The continuous combination fin further includes a plurality of drainage louvers in one of the first portion and the second portion and the third portion that are off-set relative to each other such that air flows through the entrance louvers and exit louvers and water drains through the drainage louvers.

Abstract: A folded fin heat sink to be clamped onto circuit components in need of cooling, in particular CPU's. Ridges are designed to optimize air flow. Suitable for use with a fan to force air movement.

Abstract: Plural heat-exchanging plates for forming an evaporator have plural projection ribs. The projection ribs protrude toward outside of each pair of the heat-exchanging plates to form therein refrigerant passages through which refrigerant flows, and to form an air passage between adjacent pairs of the heat-exchanging plates. The projection ribs protrude from flat surfaces of the heat-exchanging plates toward the air passage to disturb a straight flow of air. The projection ribs are provided in each of the heat-exchanging plates to have a protrusion pitch (P1) between adjacent two, and the protrusion pitch is set in a range of 2-20 mm. Further, each of the heat-exchanging plates has a thickness of in a range of 0.1-0.35 mm, and a passage pitch (P2) between the refrigerant passages is in a range of 1.4-3.9 mm. Thus, in the evaporator formed by only using the plural heat-exchanging plates, a sufficient heat-exchanging performance can be obtained.

Abstract: In a space conditioning system, such as a central air conditioning or heat pump system, a unit of the system has a heat exchanger made of a predetermined first type of metal (e.g., aluminum) and a cabinet in which the heat exchanger is mounted, which is made of a second type of metal (e.g., steel). A device is provided for isolating the heat exchanger from the cabinet to prevent contact therebetween. The isolation device preferably includes plural snap-fit plastic members spaced along the top and bottom of the heat exchanger, plural mounting brackets made of the first type of metal on each end of the heat exchanger and a pair of plastic bushings operatively associated with each mounting bracket and extending through aligned holes in the corresponding mounting bracket.

Abstract: A CPU heat exchanger comprises a plurality of curved metal thin pieces, each surface of each metal thin piece having punched with a plurality of ribs, the ribs at opposite sides being alternatively arranged; so that a trench is formed between two metal thin pieces for being formed with a turbulent flow; each rib having openings at an upper side and a lower side thereof. Airflow in the trench is turbulent and thus, air therein can absorb much heat. The openings on the upper and lower sides of each ribs cause air therein to expand and thus the heat can be absorbed more quickly. Therefore, cool and hot air are exchanged quickly.

Abstract: Plate heat exchanger has heat transfer plates which exhibit a patterning and are stacked one above the other. Primary sided flow channels for a first heat exchanger medium to be evaporated, and secondary sided channels for a second heat exchanger heat carrier medium are formed between the plates. The primary sided and/or the secondary sided flow channels are formed between two adjacent heat transfer plates, whose patterning meshes at least partially, while maintaining a minimum spacing.

Abstract: An annular flow concentric tube heat exchanger for heating two counter flowing fluid streams has been devised. Although capable of heating gases or liquids, the primary purpose of the invention is to function as an improved recuperator for recovering exhaust heat from a Brayton Cycle gas turbine engine, Ericsson Cycle engine or similar recuperated engine. The basic element of the recuperator is a concentric tube assembly that, in the preferred embodiment, is comprised of four concentric tubes that enclose three concentric annular flow passages. The low pressure exhaust flows through the inner and outer annular passages while the high pressure compressor exit air flows through the annular passage that is between the two low pressure passages. The high and low pressure flows are in opposite directions to achieve the high effectiveness that is only available with a counterflow heat exchanger.

Abstract: A heat exchanger comprising: a plurality of longitudinally extending tubes grouped into at least first, second and third passes; the tubes in the first pass being serially connected with tubes in the second pass; the tubes in the second pass being serially connected with tubes in the third pass; and wherein the number of tubes in the first pass is greater than the number of tubes in the third pass.

Abstract: A pair of heat conductive plates forming an evaporator core portion has a plurality of projection ribs. The projection ribs protrude toward outsides of the pair of heat conductive plates for forming refrigerant passages thereinside. Air flows outside the heat conductive plate perpendicularly to a flow direction of the refrigerant, and is prevented from flowing straightly by the projection ribs to make a turbulent flow.

Abstract: A chuck having two distinct portions mounts a substrate within a vacuum processing chamber. A first sealing stage confines a gas within a heat-transfer interface between one portion of the chuck and the substrate. A second sealing stage collects gas escaping from the heat-transfer interface within an intermediate space bounded by the two portions of the chuck and the substrate. Pressure in the intermediate space is reduced with respect to pressure at the heat-transfer interface to inhibit leakage of gas from the heat-transfer interface into the vacuum processing chamber.

Abstract: A heat exchanger includes a housing extending between a first end and a second end and having a first housing opening and a second opening disposed proximate the first end. The housing has a third housing opening and a fourth housing opening disposed proximate the second end.

Abstract: A workpiece chuck includes an upper assembly on which can be mounted a flat workpiece such as a semiconductor wafer. A lower assembly is mountable to a base that supports the chuck. A non-constraining attachment means such as vacuum, springs or resilient washers applied to the chuck holds the upper assembly to the lower assembly, the lower assembly to the base and can hold the wafer to the top surface of the upper assembly. By holding the chuck together by non-constraining means, the chuck layers can move continuously relative to each other under expansion forces caused by temperature effects, such that mechanical stresses on the chuck and resulting deformation of the chuck and workpiece over temperature are substantially eliminated. A plurality of support members including inclined surfaces provided between an upper and lower portion of the chuck maintain the top surface of the chuck and any workpiece mounted thereon at a constant height over temperature.

Abstract: An electrode arrangement for electrohydrodynamic (EHD) enhancement of heat and mass transfer is disclosed. Electrodes of alternating polarity are embedded within a nonconductive heat transfer wall material and are connected to a high voltage source at either end of the heat transfer wall material where the heat transfer wall material passes through a tube sheet, fitting or other confinement. When voltage from the high voltage source is applied to the alternating electrodes, electric field gradients are created on both the interior and exterior heat transfer surfaces of the heat transfer wall material. Regions of intense electric field gradient reside in close proximity to both heat transfer surfaces, thus when nonconductive fluids pass over the heat transfer surfaces, bubbles are repelled from the regions of strong electric field gradients above the electrodes and additional fluid is attracted into these regions.

Abstract: A heat exchanger comprising plates of thermoplastic tubes arranged in a way which minimizes the thermal resistance at the outer surface of the tubes preferably to not more than 5 times the resistance to heat transfer at the inside of the tubes. The tubes are arranged in the tube plates in groups that can be flat or slightly wavy, such as undulating in a periodic manner, or offset with open spaces facing groups of tubes in alternating rows. This is done in a way that maximizes turbulence outside the tubes and minimizes vortices which can trap coolant in the interstices between tubes.