Case with extended range ambient temperature
SUBSTANCE: invention is referred to electric engineering, to electric equipment operated in an explosive atmosphere. A case is made with one of explosion protection types as per requirements to explosion safety and is complete with a temperature mode maintaining device that consists of a coil coupled thermally to at least one wall. When required, a fluid is fed by a circulation pump through the coil in order to maintain the temperature mode, depending on the goal to increase or to reduce the temperature.
EFFECT: enhanced reliability due to ignition protection and expanded range of ambient temperatures.
10 cl, 1 dwg
SUBSTANCE: thermoelectric device is developed, which consists of a thermal module, the hot junctions of which represent Gunn diodes intended for conversion of thermal energy supplied from cold junctions in the form of electrical current to electromagnetic energy removing the heat from the cooled device to atmosphere. Such method has advantages in comparison to common thermal modules with hot and cold junctions so that there can be obtained a lower temperature on a cold junction because parasitic conductive transfer is reduced from the side of the hot junction, which is much less heated due to the fact that some part of energy is removed in the form of electromagnetic waves but not converted to heat on a hot junction.
EFFECT: improvement of a cooling process of heat-generating electronic components; use of the presented invention will allow improving heat transfer efficiency and reducing dimensions of a heat sink, and therefore, increasing operation intensity of cooling systems.
SUBSTANCE: inventions refer to computer systems mounted in server racks and rooms, and to their cooling. A computer system includes case configured for installation in a rack and including one or more air scoops in the case front and one or more air outlet holes in the case rear, one or more hard drives connected to the case, and one or more air ducts under at least one hard drive, at least one of several air scoops of one of several air ducts interfaces one or more air scoop of the case via fluid medium, and at least one of air outlet holes of one or more air ducts interfaces at least one of air outlet holes in the case via fluid medium, and at least one air scoop of one air duct is configured to guide at least some air down to at least one air duct where at least one air duct is configured to transfer air from at least one air scoop of one air duct to at least one air outlet hole of one air duct and where at least one of one or more air ducts is positioned at least partially downstream of one or more printed circuit card units in the case so that at least some air flows in the computer system through at least one heat-emitting element at one or several printed circuit card units in the case and further to at least one air duct under hard drives.
EFFECT: computer system with efficient cooling where free hot installation/uninstallation of equipment is possible.
14 cl, 35 dwg
FIELD: radio engineering, communication.
SUBSTANCE: housing has a bottom, side walls and a cover and is made of material with a coefficient of thermal conductivity of not more than 50 W/m·K. There is a recess at the bottom of the housing in at least one area corresponding to a contact with at least one heat-dissipating radioelectronic element. An insert made of material with a coefficient of thermal conductivity of not less than 200 W/m·K, connected to the housing, is placed in the recess. Alternatively, an insert made of double-layer material is placed in the recess, the top layer being a layer of material identical to the material of the housing, connected to the housing by a welded joint, and the bottom layer is a layer of material with a coefficient of thermal conductivity of not less than 200 W/m·K. In the top layer of the double-layer material there is a recess which runs to the bottom layer of the double-layer material, which enables to place at least one heat-dissipating radioelectronic element on its surface.
EFFECT: providing intense heat removal from heat-dissipating radioelectronic elements when in contact with the bottom of the housing, while minimising heat transfer to the radioelectronic elements when housings are sealed by soldering or welding, which improves reliability and longevity of radioelectronic devices.
16 cl, 2 dwg
SUBSTANCE: invention relates to a metal-ceramic fixed substrate, and namely to a combined substrate with liquid cooling, and to its manufacturing method. Combined substrate 1 with liquid cooling, in which metal mounting plate 15 made from aluminium or an aluminium alloy, is connected to one surface of ceramic substrate 10, one surface of plate-like metal base plate 20 made from aluminium or an aluminium alloy is connected to other surface of ceramic substrate 10, and radiator 30 of a liquid cooling type, which consists of extrusion material, is connected to other surface of metal base plate 20, in which the ratio of thickness t1 of metal mounting plate 15 to thickness t2 of metal base plate 20 meets t2/t1≥2, where thickness t1 of metal mounting plate 15 is 0.4 to 3 mm, and thickness t2 of metal base plate 20 is 0.8 to 6 mm.
EFFECT: reduction of costs for materials and production, reduction of bending (deformation of shape), and improving strength and heat-radiating productivity.
19 cl, 21 dwg, 3 tbl, 5 ex
FIELD: physics, computer engineering.
SUBSTANCE: invention relates to computer engineering and can be used in radio-electronic equipment blocks in which plug-in electronic modules are installed and which operate in conditions of high heat release by radio-electronic equipment components, significant mechanical loads, as well as aggressive weather conditions during field use. An electronic unit includes channels which form a coolant stream. Through said channels, which are located in the walls of the unit, the coolant stream can reach electronic modules and can also reach the inside of said modules through an opening in the housing. Other openings in the housing of the unit link said channels with the outer space. Any of the openings can be made while ensuring air-tightness.
EFFECT: providing an electronic unit with a new functional capability of cooling electronic modules by directing a coolant stream into said modules when installed in the unit, as well as improving efficiency of removing heat released by radio-electronic equipment components while saving the coolant.
3 cl, 9 dwg
FIELD: radio engineering, communication.
SUBSTANCE: invention relates to radio electronics, particularly to cooling heat-dissipating elements of electronic equipment. The evaporative cooling system for a light-emitting diode (LED) module consists of a base made of highly heat-conductive material on which there are LEDs, a microporous structure adjoining the heat-conductive base, which is located between the heat-conductive base and a heatsink, having channels under the LEDs perpendicular to the mounting plane of the LEDs such that parts of the heat-conductive base adjoining the ends of the channels form, in maximum proximity to the p-n junctions of the LEDs, an intensifying heat-exchange surface made of porous material, wherein each channel is partitioned off by a funnel with a steam pipe such that the funnel adjoins the intensifying surface with the upper part.
EFFECT: proving highly efficient removal of heat from each of semiconductor LEDs assembled into a module with minimum resistance to heat transfer and minimum effect of uncondensed impurities.
SUBSTANCE: invention relates to heat-removing equipment, can be used in heat exchange systems of gas and liquid cooling, as well as for removal of heat from heat-loaded solid elements. A core-type radiator made from heat dissipating material includes a base and a lot of hollow cells. Ribs connected to each other with transverse plates are fixed on the surface of the base; the transverse plates are connected to each other with binding plates, thus forming a honeycomb structure. The ribs are fixed on the external surface of the base.
EFFECT: improving heat dissipation efficiency.
17 cl, 6 dwg
FIELD: power engineering.
SUBSTANCE: invention relates to the field of electronics and may be used to provide for effective heat release from printed circuit boards with electronic components placed on them. In the device comprising two plates from highly heat conductive materials the first plate is fixed on the printed circuit board with heat releasing components placed on it. At the same time the first plate is fixed on the frontal side of the printed circuit board with heat releasing components placed on it and at the side facing the heat releasing components placed on the printed circuit board is made in the form of a replica of the frontal side of the printed circuit board with heat releasing components placed on it, and the second plate from highly heat conductive materials is fixed on the back side of the printed circuit board.
EFFECT: increased efficiency of heat removal.
9 cl, 3 dwg, 1 tbl
FIELD: radio engineering, communication.
SUBSTANCE: intensified evaporative cooling system for a light-emitting diode (LED) module consists of a highly heat conductive base made of metal, metal-ceramic or a material having a structure of insulated conductors within a metal, with LEDs mounted thereon, which adjoins filler made of microporous material with mini-channels arranged under the LEDs perpendicular to the installation plane thereof such that parts of the heat conductive base adjoining the ends of the mini-channels form, in maximum proximity to the p-n junctions of the LEDs, an intensifying heat exchange surface, which is intensified through radial fins in the form of micro-channels with a triangular cross-section, the ratio of the depth to the width of which is 1 on the periphery and 2 at the centre.
EFFECT: providing highly efficient heat removal with minimal heat transfer resistance from each of the semiconductor LEDs assembled into a module.
7 cl, 2 dwg
FIELD: radio engineering, communication.
SUBSTANCE: ventilation panel of an electronic device, placed in a housing, consists of a frame and a ventilation plate built into the frame, made of an electroconductive metal or alloy, having a field of ventilation openings, the greatest dimension of each of which provides a given level of shielding the maximum frequency of the electromagnetic radiation of the electronic device, and means of mounting the frame to the housing of the electronic device, which provide electrical contact. The frame of the ventilation panel has at least one recess, the dimensions and shape of which correspond to the dimensions and shape of the ventilation plate, and the depth is greater than 0.5 times the thickness of the ventilation plate; the ventilation plate has a field of openings on its entire area, the maximum dimension of which is selected in the range of 2.0…6.0 mm, and elements for mounting to the frame in the recess, which provide electrical contact. The method of making a ventilation panel includes the following: cutting the ventilation plate from a given type of a perforated sheet of electroconductive material with openings, the greatest dimension of which is in a range which provides a given level of shielding electromagnetic radiation of the electronic device; connecting the plate with the frame using screws or electroconductive adhesive or by welding or soldering.
EFFECT: simple design of the ventilation unit owing to low labour input in making the ventilation panel with high effectiveness of shielding, simple method of making ventilation plates.
16 cl, 14 dwg
SUBSTANCE: invention refers to electric engineering and may be used in electric cabinets. The blank for a drawer (10) of an electric cabinet comprises a part (1) of the basic plate, the first bent off part (2) for a connector wall with the respective fold line (3) passing in the first direction, and the second and third bent off parts (4, 6) for side walls with the respective fold lines (5, 7) passing in the second direction perpendicular to the first one. The part (1) of the basic plate comprises side sliding parts (8, 9), which pass outside the respective fold lines (5, 7) of the second and third bent off parts (4, 6).
EFFECT: simplified fabrication and increased cost efficiency.
13 cl, 3 dwg
SUBSTANCE: invention relates to electrical engineering. A vertical electrical connector is intended to supply horizontal rows of electrical devices in a switchboard and contains a row (100) of vertical conductive bars (110, 120, 130, 140) parallel to the longitudinal axis (X) and having the central plane (P). Each conductive bar is made as a thin and prolonged metal plate (115, 125, 135, 145) containing two opposite main sides placed in parallel to each other and perpendicular to the central plane (P) of this row (100). Two lateral conductive bars (110, 140) are placed at the ends of this row and each one contains at least one electrical connector (111, 121A, 121B, 131A, 131B, 141A, 141B) for the electrical connection of the above electrical devices to the electrical network. All electrical connectors of the conductive bars in the row are placed in the space lying between the above lateral conductive bars. The device contains at least one connecting block (150A, 150B, 160), which contains electrical connectors (121A, 131A, 141A, 131B, 131B, 141B, 111) placed in line close to each other in the transversal direction (Y) perpendicular to the longitudinal axis (X) in the central plane (P) of the row (100).
EFFECT: simplified connection.
14 cl, 15 dwg
FIELD: physics, computer engineering.
SUBSTANCE: invention can be used in a railway automation system equipment having high requirements for moisture and dust protection. The computer unit includes functional cells in the form of printed-circuit boards with electronic components mounted on guides and connected by electrical connectors at their ends with a motherboard and protected by a casing. The casing consists of side walls, front and rear frames which form a chassis, to which a cover, a base and front and rear panels are mounted. On the inner side of the side walls there are stiffening ribs, along the upper edges of which there are grooves; at the ends there are openings for mounting the front and rear frames, and their sides adjoin protrusions to which rails are mounted, and guides are mounted perpendicularly. Around the inner periphery of the front and rear frames there are mating surfaces, on the outer side of which there are grooves under elastic spacers, on the corners of the opening for mounting side walls to the stiffening ribs, and on the inner side along the upper and lower edges there are horizontal protrusions which form grooves which, when assembling the chassis, form a closed loop of grooves on its upper and lower surfaces under elastic spacers. The functional cells are inserted into the chassis and are attached by one end to the mating surface of the front frame, and by the other end to the motherboard, which is mounted across the chassis and is mounted to the rear rails. Functional cells with high heat dissipation are fitted with heatsinks. The front panel has radiators and functional cells with heatsinks are mounted under the radiators. On the inner side of the front panel around openings for connectors there are grooves for elastic spacers.
EFFECT: high reliability of protecting the unit from electromagnetic radiation, external vibrations, moisture and dust penetration and providing effective heat removal from electronic components with high heat dissipation.
3 cl, 4 dwg
SUBSTANCE: invention relates to dielectric insulating medium containing hydrofluor monoether, which has, at least, three carbon atoms and has a boiling point below 55°C. The invention also relates to the use of the named hydrofluor monoether in a dielectric insulating medium for an electric device (2) for generation, distribution and/or use of electric energy; and also to the use of the dielectric insulating medium for dielectric isolation in the electric device (2) for generation, distribution and/or use of electric energy. The invention also describes the device (2) for generation, distribution and/or use of electric energy, and the named device (2) comprises the housing (4) forming the isolating space (6), and an electrically active part (8) located in the isolating space (6), and the named isolating space (6) comprises the insulating medium, and it is a dielectric insulating medium. The insulating medium according to this invention has high insulating properties, in particular high dielectric durability and at the same time - low PGP.
EFFECT: invention allows to create the insulating medium which is chemically and thermally steady to the temperatures above 140°C which is non-toxic or has low level of toxicity and which is also non-corrosive and non-explosive.
72 cl, 3 dwg
SUBSTANCE: invention relates to electrical equipment and can be used in cabinets for low-voltage switchgears for voltages up to 500 V and electric current up to 63 A. The switchgear cabinet is designed as a wall housing for suspension or embedding or as a vertical cabinet designed with a back wall and related parts (12, 14) of sidewalls, and also, if necessary, at least, one moving front door. The cabinet is fitted with embedded in elements for connection of the switching devices placed in the switchgear cabinet. Sidewall parts (12, 14) of, and also of the back wall are designed modular and rigidly connected to each other. As glue connection of sidewall parts (12, 14), and also of the back wall and/or connection of hinges or grooves of at least one moving front door with the respective sidewall parts (12, 14) the high-resistant adhesive tape is used; as a bearing material (26) the foam material with closed cells coated on both sides with the acrylic gluing material is used.
EFFECT: simplification of fabrication and operation.
11 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: framework is basis of structure of the automatic monitoring and diagnostic systems (AMDS), is contains four vertical supports rigidly secured on base and in top cover of the framework. Guides are secured to side framework poles, in them the sliding trays are installed with possibility of rigid securing. On trays AMDS functional units are installed with rigid securing to trays. The guides and trays are arranged through height with different distances depending on height of the installed units. Flat side panels are secured outside to the side poles. By the side poles on one side of the framework AMDS cabinet is secured to the wall of the process space. AMDS rack is secured to floor and wall of the process space using the shock-absorbers. AMDS functional units have build-in cooling devices. On the additional slide trays of AMDS main option the following is installed: monitored object connected to hardware channels of the test actions, and to hardware measuring parameters of the response signals of the monitored object, and keyboard of AMDS control PC. Option of AMDS design provides for installation of the face and rare doors, that in work position are opened and turned along wall of the process space.
EFFECT: reduced loading of air conditioning devices of the process space of the repair-testing workshops, reduced impact and vibration loads on cabinet REE, especially during AMDS transportation as part of mobile repair-testing facilities.
10 cl, 10 dwg
SUBSTANCE: portable surface ground device is coupled to a power supply source of a mobile electrical installation and is comprised of a ground tank with a contact bolt and a load placed in its centre. The ground device has heating ground electrodes of a coaxial structure, which outer shells are insulated by a layer of heat- and moisture-proof varnish; the electrodes are placed in a case sealed with a heat insulated polyurethane coating and protected with a glass-reinforced plastic jacket. The case is equipped with a heat concentrator and a resistance sensor connected to an electronic stabiliser of current-spreading resistance.
EFFECT: reduction and stabilisation of current-spreading resistance and provision of the reliable and safe operation of equipment and maintenance personnel in the winter period in conditions of extremely low temperature and perpetually frozen soils.
SUBSTANCE: invention relates to systems for heat removal from computer equipment mounted inside server or mounting cabinets, and namely to a condensation cabinet. The condensation cabinet consisting of a protective casing; two and more injectors serving for spraying of a mixture into an inner cavity of the cabinet; highly heat-conducting plates with installed heat releasing equipment; thermoelectric batteries (TEB); heat bridges; a pin fin heat sink; a fan unit; a control unit (CU); a condensate flowing-down chute; a pump serving for the supply of condensate to injectors, and a temperature sensor involves an evaporation and condensation cooling principle. Liquid is injected through the injectors located on the cabinet ceiling into the inner cavity of the cabinet; after it is deposited on heat releasing elements, it is evaporated, and therefore, the heat releasing elements are cooled down. Liquid vapours are condensed on the ceiling (upper part of the cabinet) that is technically made with an inclination to a rear wall of the cabinet for directed condensate flowing-down. In order to strengthen condensation properties of the evaporated liquid, TEB having a close contact of cold junctions to the upper cover plate of the cabinet are used, and the mounted pin fin heat sink that is also in close contact to TEB junctions, but already on the hot side, performs the heat pick-up. The heat bridges are located between TEB (they alternate in a staggered order with TEB) and serve for cooling of the upper surface of the cover plate by means of the pin fin heat sink and the fan units without any activation of TEB to save electric energy. The fan unit consisting of four fans is controlled by the control unit (CU) that gives a possibility of their pair activation for the purpose of electric energy saving by blowing over a radiator. TEB is fed through CU. A condensed mixture on the upper cover plate flows down through the rear wall and penetrates onto a special chute located throughout the length of the rear wall. From there, it is supplied via the liquid channel to CU, in which a pump is installed. The mixture is supplied back to the injectors through the liquid channels under the action of the pump.
EFFECT: providing efficient heat removal from the cabinet volume.
SUBSTANCE: invention is related to electric engineering, to electric switchboard and/or distribution cabinets (10) with envisaged panels for metering and distribution. The cabinet comprises mounting frames (18) for fixation of electrical and/or electronic components such as electricity meters and automatic circuit-breakers. The mounting frames (18) are made as C-shaped sections or U-shaped sections. The cabinet comprises a rail (12) connected to at least one receiver (14, 16) for receipt of the mounting frames (18) different in configuration, shape and dimensions. The rail (12) is fixed rigidly at predefined positions to the respective wall (20) of the cabinet (10). The respective receiver (14, 16) is designed to fix the rail (12) locally.
EFFECT: reduction of costs at equipment mounting due to reinstallation of the receiving element in the cabinet.
13 cl, 9 dwg
SUBSTANCE: invention relates to electrical engineering, bus bars adapters with bearing bus for fastening the switching device on them. The bearing bus is designed with a possibility of fastening on the bus bar adapter in various positions and has legs. The bus bar adapter has clearance holes, through which respectively one of legs of the bearing bus with latch protrudes from the first limiting surface of clearance holes, to which the bearing bus adjoins, to the second limiting surface of clearance holes so far, that the respective latch of the leg with retaining surface is located at a distance from the second limiting surface, which corresponds to the size of the gate, which slides with geometrical closure between the retaining surface of the latch and the second limiting surface.
EFFECT: simplification of fixing at the expense of avoidance of use of accessories.
9 cl, 4 dwg
SUBSTANCE: trigger switch has a switch lever for forward and reverse rotation; a housing is made with a chamber for accommodating a velocity control unit, a chamber for accommodating a turning axle for mounting the switch lever and a chamber for accommodating a contact board next to the chamber accommodating the turning axle with a protective element in between; the chamber for accommodating the turning axle has an opening for mounting the turning axle, and a waterproof means for closing at least the gap between the switch lever and the opening for mounting the turning axle to avoid water entry.
EFFECT: high reliability.
2 cl, 14 dwg