98results about How to "Improve cooling effect" patented technology

In an exhaust gas turbocharger including a compressor wheel, the compressor wheel is cooled by at least one nozzle which is arranged in close axial proximity to the axis of rotation of the compressor wheel for spraying the backside of the compressor wheel near the center thereof with coolant whereby the coolant, utilizing the centrifugal forces of the rotating compressor wheel, is completely distributed over the entire wheel back surfaces.

The invention relates to a centralized air supply device of a railway car equipment compartment and an equipment compartment ventilation system. The equipment compartment is composed of a apron board, a bottom plate, an end plate and a framework, one or two centralized air supply devices are installed in the equipment compartment, first air inlets and first air outlets are formed in the apron board, an air inlet of the centralized air supply device is communicated with the first air inlets in the apron board, and an air outlet of the centralized air supply device is communicated with the equipment compartment and used for providing cooling air for air-using equipment in the equipment compartment. Inlet air for the air-using equipment in the equipment compartment is extracted in the equipment compartment, the heat radiation and air filtering effects are good, micro-positive pressure in the equipment compartment is guaranteed, the ways that dust and ice snow enter the equipment compartment are reduced, the number of the first air inlets in the apron board is reduced, and manufacturing and maintenance cost is lowered so that cars can run safely in extremely cold, strong sandy wind, high-temperature environments and other severe environments.

The invention relates to a novel solar refrigerator comprising a refrigerator body, a solar photovoltaic power supply device, a direct-current inverter compressor, a first condenser, a capillary tube, a first evaporator, an adsorption bed, a second condenser, a control valve, a liquid storage tank and a second evaporator, wherein the solar photovoltaic power supply device comprises a photovoltaic cell and a controller; the photovoltaic cell is covered with a spectrum selective composite layer formed by combining a selective reflecting film and a selective emitting film; the photovoltaic cell and the adsorption bed form a combined adsorption bed. The novel solar refrigerator has the following advantages that photovoltaic-thermal comprehensive utilization is achieved by means of integration of a solar flat-plate adsorption refrigeration system and a solar photovoltaic direct-current refrigeration system, and the refrigeration efficiency of the adsorption refrigeration system is further improved by means of the radiation refrigeration technology; in addition, high photovoltaic power generation can be achieved by using a cheap amorphous silicon photovoltaic cell, and the overall efficiency of the solar refrigerator is remarkably improved.

The invention discloses a diamond micro-channel Cu-based CVD diamond heat sink sheet and a preparation method thereof. The diamond micro-channel Cu-based CVD diamond heat sink sheet sequentially comprises a Cu substrate, a micro-through-hole template and a CVD diamond film from bottom to top, wherein the Cu substrate and the micro-through-hole template are provided with nano-diamond particles therebetween, the Cu substrate is embedded with a diamond micro-channel array, the diameter of each diamond micro-channel ranges from 0.3mm to 0.5mm, and the distance between every two micro-channels ranges from 2mm to 3mm. The heat dissipation effect of the heat sink sheet is superior to that of traditional heat sink sheets such as Ag, Cu and Al; the heat dissipation performance of the micro-channelCu-based diamond heat sink sheet is better; the nucleation density and the growth rate of diamond in the micro-through-hole are greatly improved; and the CVD selective growth of the diamond film is realized in the micro-through holes.

The invention relates to a welding and radiating turntable, which comprises a rotation platform and a platform base plate, wherein the rotation platform is in a disc shape; the center of the rotation platform is connected and fixed with a rotating shaft; the rotating shaft is arranged on the platform base plate; a bearing is arranged between the rotating shaft and the platform base plate; a cross-shaped groove is arranged on the rotation platform; the center of the cross-shaped groove is arranged in the center of the rotation platform; the rotation platform is divided into four equal sectors through the cross-shaped groove; and an air vent is arranged in the central position of each sector. The welding and radiating turntable has the beneficial effects that the bearing is arranged between the rotation platform and the platform base plate, and the position of the platform base plate is fixed, so that the rotation platform can be rotated manually; the cross-shaped groove and the air vents are arranged on the rotation platform, so that the heat of the rotation platform can be radiated conveniently, and particularly, the radiating effect can be further improved through a radiating fan on the platform base plate; and through circumferential scales on the surface of the rotation platform, an operator can grasp the rotation angle conveniently, and can operate flexibly and accurately.

The invention discloses a semiconductor laser for a solid-state laser pumping source. The semiconductor laser comprises a base, a plurality of Z-shaped illuminant components arranged on the base, wherein the plurality of illuminant components are connected in series, and the adjacent illuminant components are symmetrically arranged on the base; the illuminant component comprises a heat sink on which a circuit board is installed; one end of the heat sink is installed with a first electrode electrically connected with the circuit board, and the other end is installed with a second electrode electrically connected with the circuit board; a bar module is arranged between the first electrode and the second electrode in the middle part of an upper end surface of the heat sink, the bar module is formed by a plurality of bar components in series connection; and two ends of the bar module are electrically connected with the first electrode and the second electrode through conductive blocks. The semiconductor laser has the features of being compact in structure, small in volume, large in power, good in radiating effect and long in service life.

This invention relates to a micro-slot group integrated heat-pipe radiator including a closes shell made of metal thin plates, in which, the inside cavity of the shell is vacuum filled with working fluid, a core piled up closely by multiple metal thin plates are set in the closed shell, the outer surface of the core is welded to the internal surface of the shell, gaps generating capillary force to adsorb the working fluid is set between the metal thin plates, the surface of the plate is opened with through holes, multiple piled up through holes form through holes on said core to drive the boiled fluid to flow among the slots adjacent to said metal thin plates.

The invention discloses an LED lamp with water-proof and dust-proof functions. The LED lamp with the water-proof and dust-proof functions comprises a lamp holder shell, a lampshade, a light source plate and a radiating base, wherein a plurality of ventilating passages for air circulation are formed inside the radiating base; an insulating block used for connecting the radiating base and the lampshade is arranged between the radiating base and the lampshade; a step part is formed in one side, facing to the radiating base, of the insulating block, the radiating base is attached to the step part, and an air inlet communicated with the ventilating passages is informed between the radiating base and the insulating block; one side, facing to the lampshade, of the insulating block, extends to form a stopping edge with a surrounding periphery, and the light source plate and the lampshade are mounted inside the stopping edge; a connecting piece used for connecting the radiating base and the lamp holder shell is further arranged between the radiating base and the lamp holder shell; a plurality of exhaust passages communicated with the ventilating passages and the outside are further arranged on the connecting piece; and the air inlet, the ventilating passages and the exhaust passages are in communication in sequence to form air circulation passages. According to the LED lamp provided by the invention, air circulation heat dissipation is performed through the ventilating passages, and the insulating block is used for preventing the light source plate from being impacted by water and dust.

The invention discloses a microwave furnace exhaust motor set with function of absorbing oil smoke, comprising a motor, motor shafts, exhaust fans, and wind scoopers. The motor generates drive force when a power source is connected; the motor shafts are respectively connected with two sides of the motor and are rotated by the drive of the motor; the exhaust fans are respectively connected with the two sides of the motor and are rotated by the rotation of the motor shaft; and the wind scoopers are respectively connected with the two sides of the motor, and the wind scoopers of the exhaust fans are used for guiding air current when the exhaust fans are rotated, and at least one axial fan is arranged in the exhaust fans. The microwave furnace exhaust motor set can obviously improve cooling effect of electric appliance parts of a magnetron and so on which are arranged inside an electric appliance room of a microwave furnace, and effectively prevent corrosion of the electric appliance parts, thereby prolonging service life of the electric appliance parts, lightening weight of the integral exhaust motor set, and reducing manufacturing cost at the same time.

The invention discloses a radial hybrid magnetic bearing of a slice rotor. The radial hybrid magnetic bearing is characterized in that the slice rotor is sleeved with a radial stator disc in a hollow manner, and the radial stator disc is composed of a radial stator cylinder and three radial stator pieces, and the three radial stator pieces are successively fixed on the inner wall of the radial stator cylinder along the axial direction; a first axial cavity is arranged between a first radial stator piece and a second radial stator piece, a second axial cavity is reserved between the second radial stator piece and a third radial stator piece, and radial control coils are arranged in the two axial cavities; the slice rotor is composed of a rotor magnet yoke and a permanent magnet, the rotor magnet yoke is coaxially closely nested outside the permanent magnet, and the permanent magnet is of a hollow cylinder shape and is radially filled with magnetism; the permanent magnet provides static bias flux, the radial control coils provide radial control magnetic flux, and the radial control magnetic flux and the static bias flux are overlapped at radial gaps. The radial hybrid magnetic bearing provided by the invention has the advantages that a radial magnetism filling permanent magnet is adopted, the spaces of the radial control coils are reduced, and the radial bearing capacity is increased.

The invention discloses a method for district cooling of internal cooling and external cooling of a rotor magnetic pole. A cooling gas flows into a channel between two magnetic pole coils through a ventilating partitioning device on air inlet ends of the two magnetic pole coils to form an external cooling ventilating air path for cooling the external part of the magnetic pole coils, flows into the interiors of the magnetic pole coils through a gap between magnetic pole iron cores and magnetic pole coils to form an internal cooling ventilating air path for cooling the interiors of the magnetic pole coils, and finally flows into the channels between the two magnetic pole coils from the interiors of the magnetic pole coils, so that the ventilating partitioning device is used for mutually separating the external cooling ventilating path from the internal cooling ventilating path which flow in the channel. According to the method, through simultaneously performing internal cooling and external cooling on the magnetic pole coils, and separating the internal cooling ventilating air path and the external cooling ventilating air path in the channel between the two magnetic pole coils, the internal cooling ventilating air path and the external cooling ventilating air path are in mutual noninterference, the cooling gas ventilating inside smoothly flows in the channel between the two magnetic pole coils, and thus the cooling effect of the whole magnetic pole is improved.

The invention discloses a double-screw compression and expansion all-in-one machine for a fuel cell. According to the all-in-one machine, high-pressure orifices are formed in positions close to the middle of a machine body, and low-pressure orifices are formed in the two ends of the machine body; a female rotor of a compressor and a male rotor of an expander are coaxially connected and fixed, a male rotor of the compressor and a female rotor of the expander are also connected through a rotor shaft, the male rotor of the compressor is fixed to the rotor shaft, and the female rotor of the expander and the rotor shaft are in clearance fit and slide mutually; and the low-pressure side of the expander is connected with a motor. According to the all-in-one machine, the number of bearings is reduced, the size, weight and cost are lowered, the rotating speed of the expander is effectively lowered by the rotor gear ratio, and flow matching of the compressor and the expander is realized; and meanwhile, the load of the bearings is effectively lowered through the stress balance effect of the compressor rotors and the expander rotors, the power loss of the bearings is reduced, and the problem that the recovery work is little when the expander is at a low load is solved.

The invention relates to the technical field of PCB structures, discloses a PCB. The PCB includes a substrate, a metal block, and a heat dissipating hole; the substrate has a stepped groove; the metalblock is arranged in the stepped groove and same as the stepped groove in shape, and a heat conduction medium is arranged between the top surface of the metal block and a component; the heat dissipating hole is formed in the substrate, and the heat dissipating hole and the metal block can be used for heat conduction. By forming a groove in the PCB, embedding the metal block making direct contactwith the component and forming the heat dissipating hole which can be used for heat conduction with the metal block, heat generated by the component and heat in a metal layer in the PCB can be timelyand rapidly dissipated, the heat dissipation performance of the PCB is improved, and the service life of the PCB and the component is prolonged.

Embodiments of the invention provide a middle frame component and a production method thereof. The middle frame component is a support component which is in an electronic product and is used for supporting components of the electronic product. The middle frame component comprises a middle frame base material body, a first metal layer and an insulation passivation layer, wherein the first metal layer is attached to a first area of the middle frame base material body; a heat conductivity coefficient of the first metal layer is greater than a heat conductivity coefficient of the middle frame base material body; the first area includes all or parts of external surfaces of the middle frame base material body; the first metal layer is used for conducting heat generated by at least one component which is contacted with or adjacent to the first metal layer to the whole first metal layer and the middle frame base material body; and the insulation passivation layer is attached to a surface of the first metal layer. In the embodiments of the invention, heat dissipation performance of the middle frame component can be increased.

A manufacturing method for a thin type heat conduction device comprises the steps that a bottom plate and a cover plate which are combined in a face-shaped overlaid form are prepared, the bottom plate is provided with a flat heat dissipation face, a press-fit edge is arranged on the periphery of the part between the bottom plate and the cover plate, a vacuum cavity is formed within the surrounding range of the press-fit edge, a vacuum pumping liquid injection opening is formed in one position of the press-fit edge and sealed through a press-fit edge part, and the outer end of the press-fit edge part is sealed to be in a sealed state through a welding technology; the position, corresponding to the vacuum pumping liquid injection opening, of the press-fit edge is further provided with an upward inwards-concave face, and the upward inwards-concave face is in a face-shaped inwards-concave form in the direction from the flat heat dissipation face of the bottom plate to the cover plate; and accordingly, the outer end of the press-fit edge part forming the vacuum pumping liquid injection opening is in an upwards inwards-concave state relative to the flat heat dissipation face of the bottom plate, so that a space where welding flux used for sealing can protrude downwards is achieved, the welding flux is prevented from protruding out of the flat heat dissipation face of the bottom plate, and accordingly the assembling flatness degree and the optimal heat dissipation efficiency of the flat heat dissipation face of the bottom plate are ensured.

The invention provides an automobile balance block die-casting mould, which comprises a push cylinder, an upper mould base, an upper mould, a lower mould and a lower mould base, wherein the upper mould is arranged on the lower end of the upper mould base; the lower mould is arranged on the upper end of the lower mould base; the upper mould base is connected to the upper end of the lower mould base through a guide pillar; cooling holes are formed in the upper end face and the lower end face of the upper mould base in a penetrating way; a guide sleeve is connected onto each cooling hole. According to the automobile balance block die-casting mould, each cooling channel is communicated with a blind hole, each blind hole is communicated with a cooling hole, and each guide sleeve is arranged on the corresponding cooling hole, so that the mould can be cooled conveniently and quickly through injecting cooling water in the guide sleeves; the cooling channels are arranged at equal distances and in parallel, so that cooling is uniform, the cooling effect can be further improved, and the product quality is improved; the automobile balance block die-casting mould is simple in structure, convenient to operate, and good in cooling effect.

The invention discloses a safe outdoor electric power equipment cabinet with high efficiency. The top of the inner chamber of the cabinet body is provided with an air-exhaust box in the form of embedding. The inner part of an air outlet is filled with loose and porous water absorbing material. The inner of an interlayer is insertedly provided with a heating pipe. The inner side of an air inlet of the heating pipe is also provided with a heating rod in the form of embedding. The outer wall of the cabinet body is provided with a temperature inductor. The part of an air inlet window outside the cabinet has a louver structure. By adding the water absorbing material at the air inlet and the air outlet, the water-proof ability of the safe outdoor electric power equipment cabinet with high efficiency is greatly increased, the use safety of electric equipment is guaranteed. By use of the louver-type air inlet window, the efficiency of air inlet is increased and high-efficiency heat dissipation is achieved. In cold weather, frost attached to the cabinet body surface can be timely cleared by an intelligent heating system constituted of the heating rods, the temperature inductor and control chips, so that cabinet body damage due to the large temperature difference between inside and outside is avoided.