摘要:
The invention provides a fluid cooling system comprising a heat exchanger with an outer wall forming a chamber with an inlet and an outlet for circulating a heat exchange medium in the chamber. The chamber has an opening towards the component which is to be cooled, and to protect the component, the opening is closed by a flexible wall which is attached to the outer wall. To protect the cover and the component against overload, the flexible wall is attached to an inner wall inside the chamber. The cooling system could be applied to electronic systems, e.g. for cooling a DCB substrate or similar electronic components.
摘要:
A distributor (1) for distributing a flow of cooling fluid over one or more surface(s) (3) to be cooled has a housing (13) that may be manufactured in a single piece together with inlet (8) and outlet (9) manifolds and a plurality of flow cells (26, 27, 28, 29). The flow cells (26, 27, 28, 29) may be connected in parallel between the manifolds (8, 9), and may be adapted to cool multiple surfaces (3) simultaneously. The present invention is also directed to a fluid-coolable unit comprising a distributor (1) for removing heat from an electronic circuit, such as integrated circuit or CPU.
摘要:
A cooling unit for cooling in particular power semiconductors contains a distributor for guiding liquid across a surface to be cooled. The distributor comprises an inlet manifold (8) and outlet manifold (9), whereby the inlet and outlet manifolds are connected through a flow cell, which has a main flow channel (50). The main channel is formed as a meandering sequence of channel segments (61,62,63,64). It has been found, that the transfer of heat by the liquid in the main flow channel can be improved by introducing a bypass flow channel (71,72,73) which allows the flow of liquid from the cell inlet to the cell outlet, wherein the bypass flow channel interconnects the channel segments of the main flow channel.
摘要:
A liquid-cooled power semiconductor unit has components to be cooled arranged on the upper side of a plate. The bottom side of the plate is cooled by liquid, which is guided along the plate by means of a distributing element, and the liquid inlet and the liquid outlet of the distributing element are preferably arranged perpendicular to the plate. The distributing element is divided into cells, where each cell has a liquid inlet and a liquid outlet perpendicular to the cooled plate, and the distributing element has multiple cells along the plate.
摘要:
A process is provided for output control and limitation in a heating surface made from glass ceramic or a comparable material, especially a glass ceramic cooking surface. In a heating surface, in which the individual heating zones are each heated with several heating elements, switchable and controllable independent of one another, it is provided according to the invention that all points of the areas essential for a stress case, especially local overheating, are detected by several temperature sensors, independent of one another, which are placed in the area of the heating zone, to switch and to control the individual heating elements, independent of one another so that the output distribution in the heating zone area is largely matched to the locally varying removal of heat.
摘要:
A vitreous ceramic cooker hob plate with circumferentially surrounding frame permanently elastically adhesively fitted thereto is provided. The circumferentially surrounding frame is adhesively joined to the hob plate in such a way that a narrow gap is left between the bevelled edge of the frame and the hob plate, and the frame flange overlaps the same. The gap is filled in, flush with the frontal side of the bevelled edge, by a permanently elastic adhesive which makes a sealed and mechanically firm joint between the bevelled edge and the hob plate.
摘要:
Fireproof building element with a multi-sheet glazing unit of glass or glass ceramic characterized in that at least one of the glass sheets is a fire resistant glass sheet. The building element contains one or more high heat reflective foils arranged between the sheets at a distance from the fire resistant glazing unit. The foils can be put in a rolled or folded form between the two sheets of the building element such that the visible area is not covered, and they can, in the event of a fire, be spread out completely between the sheets.
摘要:
An electronic control system monitors, in a gas burner, the four functions of (1) initial ignition of the gas, (2) continued combustion of the gas, (3) the average time rate at which the gas is burned, and (4) the maximum temperature of the combustion chamber. A first comparator is responsive to a first thermosensitive element for controlling the average burning rate (or energy output) and the maximum temperature limit; a second comparator is responsive to a second thermosensitive unit for monitoring the flame of the burner, to sense initial and continued ignition; a third comparator functions as a timedelay circuit in association with the second comparator during an initial ignition procedure; and a fourth comparator controls the source of gas in response to the condition of the first and second comparators, so that gas is supplied only when both safe and necessary.
摘要:
A construction element consisting of a sheet of material having plane front and back surfaces is joined to a base by an attachment means secured to the back surface of the sheet adjacent to the edge of the sheet. The attachment means comprises a frame having an aperture means opening away from the back surface of the sheet for receiving threaded elements and securing the sheet to the base and includes a homogeneous, permanently resilient substance positioned between the frame and the sheet having sufficient flexibility to allow for the difference in thermal expansion between the frame and the sheet and having sufficient tensile strength to hold the sheet to the frame.
摘要:
The invention relates to a cooling device for a plurality of power modules (16), comprising a heat-conducting body (15) through which a coolant flows. Said cooling device comprises external cooling ribs (14) on a first housing shell of the body through which a coolant flows for receiving the plurality of power modules adjacent to each other. Each individual cooling rib is aligned to come into fixed heat-conducting contact on at least one upper or lower side of one of the plurality of power modules, and the housing shell, on the inner side in the region of the respective cooling rib(s), comprises means for the fluidic communication with the volume of the coolant in the inside the body through which the coolant flows.