95results about How to "Improve cooling environment" patented technology

The invention provides a converter valve component used for flexible DC power transmission and IGBT submodules thereof. The converter valve component comprises an installing framework. A submodule crimping unit is fixedly arranged at the front part of the installing framework. The submodule crimping unit comprises an intermediate framework and two end plates. The intermediate framework is provided with at least two submodules and inter-module insulating stop blocks which are arranged in a spacing way along a left-and-right direction in turn. The two end plates are provided with two clamping devices. Each submodule comprises two IGBTs, three heat radiators and one thyristor. The two IBGTs and the three heat radiators are arranged in turn along the left-and-right direction in a mutual spacing way. One thyristor is arranged at the external side of the rightmost heat radiator. The corresponding fitting surface of the thyristor is fixedly installed at the external side surface of the rightmost heat radiator. The right side of the thyristor is provided with a conductive aluminum bar which is used for being matched with the rightmost heat radiator so as to clamp the thyristor. Multiple submodules can be connected in series and crimped via the two clamping devices in the submodule crimping unit so that the crimping and fixing structure of the submodules in the overall converter valve component can be effectively simplified.

The invention discloses an efficient selectable pyrolysis system and a using method thereof, wherein the efficient selectable pyrolysis system comprises a furnace body, a dry distillation kettle, gas nozzles and a cooling device, wherein a furnace chamber in the furnace body is internally provided with the horizontally-arranged dry distillation kettle, wherein the dry distillation kettle comprises an upper side part, a lower side part, a kettle top and a kettle bottom; the part on the upper side part close to the kettle top is communicated with an exhaust pipe; the other end of the exhaust pipe is connected with a diffusion valve; the part on the furnace part close to the exhaust pipe is provided with a temperature meter communicated with the furnace chamber; the lower part of the lower side part is communicated with gas outlets of four staggered gas nozzles; the gas outlets of the gas nozzles are connected with a control valve; the cooling device comprises a nitrogen intake pipe and a nitrogen exhaust pipe, wherein the nitrogen intake pipe is communicated with the kettle top; the nitrogen exhaust pipe is communicated with the upper side part; and when the efficient selectable pyrolysis system is used, if carbon production is emphasized the heating is finished to pyrolysis carbonization stage, and if biomass gas production is emphasized, the heating is finished to the forging stage. The design not only has good adjustability, high cost performance and high heating efficiency, but also the finished product carbon has good quality and high production efficiency.

The invention provides a diamond-based heterogeneously integrated gallium nitride thin film and transistor microelectronic device and a preparation method thereof. The preparation method comprises thefollowing steps: S1, providing a gallium nitride single crystal wafer with an injection surface; S2, carrying out hydrogen ion implantation on the gallium nitride single crystal wafer from the injection surface so that implanted ions reach a preset depth, an injection defect layer is formed, and a gallium nitride single crystal thin film is formed above the injection defect layer; S3, bonding thegallium nitride single crystal thin film with a diamond support substrate; S4, performing annealing treatment to peel along the injection defect layer, and forming a damaged layer on the injection defect layer; S5, performing surface treatment to remove the damaged layer; and S6, performing homogeneous epitaxial growth on the surface of the gallium nitride single crystal thin film to prepare a transistor. The diamond-based gallium nitride transistor prepared according to the invention is greatly improved in performance, has the characteristics of high electron mobility and strong heat dissipation capability, can stably work for a long time in a high-frequency and high-power state, and has very remarkable superiority compared with the prior art.

The invention discloses a backlight module which comprises a plurality of LEDs. The LEDs are grouped into a plurality of lamp groups according to the distances between two adjacent LEDs, the plurality of LEDs are provided with a position center corresponding to a central line of a display area, the lamp groups with a larger LED distance relatively approach to the position center and have a higherbrightness level, and the lamp groups with a smaller LED distance are relatively far from the position center and have a lower brightness level. Accordingly, the luminescent conditions of the whole LEDs trend to be consistent, and the proportion of adopting the LEDs with different brightness levels is increased.

The invention discloses a heat dissipation device for mechanical and electrical equipment, belonging to the field of mechanical and electrical equipment. The heat dissipation device for mechanical andelectrical equipment includes a heat dissipation box and a base fixedly connected at the bottom of the heat dissipation box. The middle of the lower end of the heat dissipation box is fixedly connected to the base through a support seat. The heat dissipation box is internally sleeved with a U-shaped heat conducting plate. The outer side wall of the U-shaped heat conducting plate is in sealing connection with the heat dissipation box. Multiple strip-shaped heat dissipation cavities are arranged in the two side walls of the inner bottom of the heat dissipation box, and heat dissipation strips are embedded into the strip-shaped heat dissipation cavities. Rectangular heat dissipation cavities are arranged in the left and right side walls of the heat dissipation box, and heat dissipation plates are embedded into the rectangular heat dissipation cavities. Through the cooperation of the U-shaped heat conducting plate, the heat dissipation strips and the heat dissipation plates, the hot air in the heat dissipation box can be transferred out. Through the use of a heat dissipation fan, a water cooling circulation device and a flow channel, the heat dissipation and temperature reduction efficiency of the heat dissipation box is further improved, and a good temperature reduction and heat dissipation environment is provided for the mechanical and electrical equipment in the heat dissipation box.

The pre-assembled converting station includes high-voltage chamber, low-voltage chamber and transformer chamber, the described high-voltage chamber and low-voltage chamber are placed over the transformer chamber, the upper portion of said transformker chamber is equipped with a ventilating radiation window exposed to the weather, and when it is used, the half of the transformer chamber is embedded under the ground, the ventilating radiation window is positioned on the ground surface so as to implement natural ventilation and radiation of transformer.

The invention discloses a packaging structure of a luminous semiconductor chip and a packaging method thereof. The packaging structure of the luminous semiconductor chip comprises the luminous semiconductor chip and a lampshade, wherein the luminous semiconductor chip is fixed on the bracket of the luminous semiconductor chip; the lampshade and the bracket of the luminous semiconductor chip are fixedly connected and form a sealed cavity; and the luminous semiconductor chip is positioned in the cavity. The lampshade and the bracket of the luminous semiconductor chip of the invention form the sealed cavity to isolate the luminous semiconductor chip from outside and oxygen, so that the luminous semiconductor chip has less possibility of being affected with damp and oxidized, and the packaging structure can be in nude packing without encapsulation by epoxy resin, thus the luminous semiconductor chip can radiate the heat from each direction so as to greatly improve the heat dissipation environment of the luminous semiconductor chip, and the luminous semiconductor chip has normal working temperature without a radiator. Thus, the packaging structure has low manufacture cost, is favourable for popularizing and using products, has simple packaging technology and is favourable for the mass production of the product.

The invention relates to a cooling device for a bearing and a sliding ring of a doubly fed wind driven generator. The device comprises a main shaft, one end of the main shaft penetrates through a bearing installing motor end cover, a wind blocking hood is arranged on the inner side of the motor end cover, a wind blocking hood cavity is formed in the part between the wind blocking shield and the motor end cover, a wind blocking hood cavity inlet and a wind blocking hood cavity outlet are formed in the end face of the motor end cover, the wind blocking hood cavity outlet is communicated with a sliding ring chamber through a wind induction pipe, and a ventilation fan is installed on the outer side wall of the sliding ring chamber; the sliding ring and a carbon brush are installed at one end of the main shaft and embedded in the sliding ring chamber; a sliding ring chamber first air inlet and a sliding ring chamber second air inlet are formed in the side wall of the sliding ring chamber. The structure of the cooling device is simple, the problem of excessively high temperature during the operation process of a bearing on the side of a shaft band centrifugal fan of the doubly fed wind driven generator resulting in the locking of the bearing and the reduction of the service life of the bearing is solved, the cooling effect on the sliding ring and the carbon brush can be ensured, carbon powder in the sliding ring chamber does not easily accumulate, and the problem of the short circuit of the sliding ring and the carbon brush due to the fact that the carbon powder is not dischargedsmoothly is solved.

A chain fluidization drying machine comprises a drying machine body and auxiliary equipment thereof, wherein the drying machine body comprises a housing; an air distribution device for bearing material and meeting fluidization and air distribution requirements is arranged inside the housing; an air compartment for distributing fluidization air for the drying machine is arranged below the air distribution device; the air compartment is communicated with a heat supply device at the exterior of the housing through an air distribution pipe; two ends of the air distribution device are supported by a driving roller and a driven roller respectively, so that the air distribution device runs in a conveyor belt manner; the material is discharged from a material outlet positioned in the bottom of the housing after heat exchange on the air distribution device; smoke dust enters a separator through a smoke flue positioned at the top of the housing to complete separation of the material and the smoke dust. According to the chain fluidization drying machine, the broken rate of material particles can be reduced, the reaction/drying time of reaction/drying material in the drying machine is prolonged, the reaction is flexible to adjust, remote control operation can be realized, and the machine has the advantages of good material adaptability, few broken particles, high reaction/drying efficiency, continuous material feeding and discharging, large processing capacity, stable quality of finished products, easiness in operation and control, energy saving and the like.

The invention discloses an electric vehicle IGBT health monitoring system based on a fiber grating sensor, which comprises a motor controller, an optical fiber demodulation system, a vehicle control unit, a thermal management system and an instrument, wherein the thermal management system is connected with a cooling channel of the motor controller, the motor controller comprises an IGBT power module assembly, a driving circuit module and a control circuit module, the IGBT power module assembly comprises a fiber grating sensor, six IGBT chips and six diodes, the fiber grating sensor comprises an optical fiber and an optical fiber connector, six fiber gratings are inscribed on the optical fiber, and the six fiber gratings are correspondingly pasted on the surfaces of the six IGBT chips respectively. According to the invention, after the IGBT power module assembly is operated for a long time, the IGBT thermal performance metamorphic degree can be evaluated, and the cooling water temperature target value of the thermal management system is rematched according to the metamorphic degree, so that a better heat dissipation environment is created for the steady-state operation of the IGBT power module assembly.

The invention relates to the technical field of motor ventilation cooling, in particular to a totally-closed double-circulation air-cooled motor structure. The totally-closed double-circulation air-cooled motor structure comprises a first base assembly, a stator core, a rotor and a second base assembly; a stator outer circulation vent hole and a stator inner circulation vent hole are formed in the stator core; a rotor vent hole penetrating the rotor in the axial direction is formed inthe rotor; an outer circulation air inlet hole and a first inner circulation vent hole are formed in the second machine base assembly; an outer circulation air outlet hole and a second inner circulation vent hole are formed in the first machine base assembly; and the stator outer circulation vent hole, the stator outer circulation vent hole and the outer circulation air outlet hole form an outer circulation cooling air channel; and the first internal circulation vent hole, the stator internal circulation vent hole, the second internal circulation vent hole and the rotor vent hole form an internal circulation cooling air channel. According to the totally-closed double-circulation air-cooled motor structure of the invention, through the establishment of the internal circulation cooling air channel, the gas fluidity in a motor can be improved, and the heat dissipation capability of the motor is improved.

The invention is suitable for a transformer field, provides a method for manufacturing a transformer winding and a transformer, the method comprises following steps: a lead passing through a plurality of magnetic cores continuously and orderly in a direction vertical to magnetic passages, froming windings surrounding a plurality of magnetic passages respectively. In an embodiment of the invention, the lead is passed through the plurality of magnetic cores continuously and orderly in a direction vertical to the magnetic passages thereby froming windings surrounding the plurality of magnetic passages respectively, reducing process request for manufacturing the windings, and requesats for manufacturing material of the winding, machining process and producing circumstance are low, a manufacturing cost of the transformer winding can be obviously reduced. At the same time, heat-generation points of the transformer are dispersed by the plurality of magnetic passages, a heat sink circumstance of the transformer is improved, an output power of the transformer is increased, and the output power can be expanded by an infinite extending method.

The invention provides a server node and a whole cabinet server. The server node comprises a server case, a main board and at least two CPUs, wherein the server case is provided with at least one channel, the main board is installed in the server case, the at least two CPUs are fixed to the main board, cooling air flow enters the server case from the at least one channel, and the positions of the at least two CPUs on the main board meet the requirement that the connection line of the centers of the two CPUs is different from the flowing direction of the cooling air flow. Because the connection line of the centers of the two CPUs is different from the flowing direction of the cooling air flow, the cooling air flow can pass through all the CPUs at the same time, the situation that the cooling air flow located in the rear CPU is heated when passing through the front CPU is not caused, each CPU has a good cooling environment, and the cooling capacity of the server node can be improved.

The invention discloses an integrated circuit module applied to a switching type adjuster. The integrated circuit module comprises a power device chip, a control chip and a lead frame. The power device chip comprises a control electrode, a first electrode and a second electrode, wherein the control electrode and the first electrode are arranged on the front face of the power device chip, the second electrode is arranged on the back face of the power device chip, and the second electrode is used as a switch terminal of the switching type adjuster, the control chip comprises a driving electrode on the front face of the control chip and a plurality of input and output electrodes, the lead frame comprises an extension pin, a base and a plurality of split-off pins, and the extension pin and the base are formed integrally. The back face of the power device chip is attached and mounted on the base of the lead frame through conductive materials, the second electrode is electrically connected with the base, the control electrode is electrically connected with the driving electrode, and the input electrodes and the output electrodes of the control chip are electrically connected with the corresponding split-off pins respectively. The integrated circuit module applied to the switching type adjuster can reduce interference of the extension pin with other pins and avoid the electric leakage and failure phenomenon.

The invention relates to a micro-sized small-power impeller-type aerator. The micro-sized small-power impeller-type aerator comprises a floating body, an electromotor and an impeller. The floating body is made by vinyon. The floating body is of a hollow-core circular ring with a low and recessed edge and a low and recessed middle part. The impeller is arranged in the center of the floating body. An electromotor is arranged below the floating body. The impeller is connected with a rotary shaft of the electromotor. The impeller is composed of a rotor body and multiple blades. The rotor body is arranged in the middle and the blades are uniformly distributed around the rotor body along the peripheral direction. The blades are of inverted-trapezoidal structures. The blades are obliquely welded on the external circumference of the rotor body. The blades are driven by the electromotor such that water flows are lifted from downward to the oblique top and splashed to the air, thereby forming water mist. Compared with the prior art, the micro-sized small-power impeller-type aerator has the following beneficial effects: the micro-sized small-power impeller-type aerator is simple in structure and convenient in installation; water flows can be directly lifted from downward to the oblique top and splashes are formed so that the effect of Increasing oxygen and dissolving oxygen is exerted; and the micro-sized small-power impeller-type aerator is widely applied to the field of production device for domestic aquatic products so that the amount of dissolved oxygen is improved and breeding effect of aquatic products is effectively improved.

The invention discloses a smart mobile phone which comprises a front shell and a rear shell. The front shell and the rear shell are combined, a cavity is formed between the front shell and the rear shell, and a plurality of heat radiating holes communicated with the cavity are formed in the rear shell. The smart mobile phone is good in heat radiation, and therefore the smart phone can stably run.

The present invention relates to the technical field of white LED lighting, especially to a double-layer structure remote phosphor, the preparation method thereof and a remote LED device with the same. The double-layer structure remote phosphor comprises microcrystalline glass inlayed by YAG: Ce yellow fluorescent powder. The surface of the microcrystalline glass inlayed by YAG: Ce yellow fluorescent powder is covered with a layer of silica gel containing CASN:Eu red fluorescent powder. The double-layer structure remote phosphor are uniformly inlayed by YAG:Ce yellow phosphor and CASN:Eu red fluorescent powder in the substrate glass and silica gel. The silica gel layer surface is smooth, and is closely integrated with the microcrystalline glass layer. The remote phosphor preparation technology is simple and cost-effective. Not toxic and pollution free, the remote phosphor has good thermal and chemical stability. When the remote phosphor is applied to construct a remote LED device, bright warm light can be radiated when the device is electrically connected.

The invention discloses lithium-ion battery forming and grading equipment, and aims at providing high-frequency isolating two-way single-power lithium-ion battery forming and grading equipment with high efficiency, a low heating value and high production efficiency. The high-frequency isolating two-way single-power lithium-ion battery forming and grading equipment comprises at least one unit module, wherein the unit module comprises an MCU (1), a two-way AC/DC control board (2), a two-way DC/DC control board (3), a two-way AC/DC rectifier (4) and a two-way AC/DC converter (5); the two-way AC/DC rectifier (4) is connected with the two-way AC/DC control board (2); the two-way AC/DC converter (5) is connected with the two-way DC/DC control board (3); the two-way AC/DC control board (2) and the two-way DC/DC control board (3) are connected with the MCU (1); and the two-way AC/DC rectifier (4) is connected with the two-way AC/DC converter (5). The high-frequency isolating two-way single-power lithium-ion battery forming and grading equipment is applied to the technical field of the lithium-ion battery forming and grading equipment.