68results about How to "Reduce disorder" patented technology

The invention discloses a capillary image evaluation method, device and equipment and a medium, and the method comprises the steps: obtaining IQ data of a to-be-detected region, and carrying out the beam forming of the IQ data; performing clutter filtering processing on the IQ data of each continuous data frame after beam forming, and extracting a blood flow signal; removing background noise from the blood flow signal to obtain a blood vessel structure image, and segmenting the blood vessel structure image to obtain a distribution position of a blood vessel region; screening a peak region based on the distribution position of the blood vessel region, and determining a peak center position; trajectory tracking is carried out based on the peak value center position, and all trajectories are superposed and displayed to generate a capillary image; and analyzing the generated capillary image, and extracting related parameters of the capillary. Therefore, the method is not limited by image resolution, and can be applied to microvascular images with limited resolution and super-resolution microvascular images, and vascular morphology and hemodynamic parameters can be extracted from the microvascular images with limited resolution and super-resolution.

The invention discloses a gallium oxide Schottky diode with a passivated two-dimensional semimetal insertion layer and a preparation method thereof, and the gallium oxide Schottky diode comprises a substrate which is made of N-type heavily doped beta-Ga2O3 with different crystal orientations; the epitaxial layer is located on the substrate; wherein the material of the epitaxial layer is N-type unintentionally doped beta-Ga2O3; the two-dimensional semimetal growth insertion layer is located on the epitaxial layer; the protection layer is located on the two-dimensional semimetal growth insertion layer, and the orthographic projection of the protection layer and the orthographic projection of the two-dimensional semimetal growth insertion layer are overlapped in the direction perpendicular to the substrate; the terminal structure is located on the epitaxial layer, the terminal structure is of an annular structure, and the terminal structure is arranged around the two-dimensional semimetal growth insertion layer and the protection layer; the anode covers the protective layer and a part of the terminal structure; and the cathode is positioned on one side, deviating from the epitaxial layer, of the substrate. According to the beta-Ga2O3-based SBD device provided by the invention, the two-dimensional material can adjust the energy band of the Ga2O3 surface by virtue of the inherent Van der Waals surface, and endow the Schottky barrier with extremely strong flexibility.

The invention relates to a polyester hollow textured yarn and a production method thereof, and the production method comprises the following steps: firstly, preparing polyester hollow filaments through a melt spinning method; secondly, the polyester hollow filaments are subjected to secondary processing on a BCF spinning device, specifically, the polyester hollow filaments are sequentially subjected to oil treatment, first pre-network treatment, first hot drafting, deformation treatment, cooling shaping, yarn dividing treatment, first main network treatment and winding forming, and the polyester hollow textured yarn is obtained. The BCF spinning device is adopted to conduct secondary processing on the polyester hollow filaments, the filaments are expanded and deformed instantly under the preset high-temperature and high-pressure environment, the filaments are cooled and shaped through the negative pressure technology, natural curling is generated in the process, on the basis that the high hollowness characteristic is kept, the rebound resilience of the fiber is enhanced, and the fiber has the good elasticity. Therefore, the overall performance and the application value of the product are improved.

The invention discloses an evaporative crystallization device based on high-concentration wastewater and a zero discharge process, and relates to the technical field of wastewater treatment.The evaporative crystallization device based on the high-concentration wastewater comprises an evaporation tank, and a drainage device is arranged in the evaporation tank; the flow guide device comprises a heat conduction inner barrel fixed in the evaporation tank, an inner ring channel formed in the center of the heat conduction inner barrel, a flow guide pipe fixed in the inner ring channel and a plurality of groups of outer ring channels formed in the heat conduction inner barrel, and the plurality of groups of outer ring channels are sequentially formed from inside to outside by taking the inner ring channel as the center; first water outlets which are arranged up and down are formed between the inner ring channel and the adjacent outer ring channel, and second water outlets are formed between the other outer ring channels. By arranging the drainage device, when entering the evaporation tank, wastewater can sequentially pass through the multiple groups of outer ring channels along the inner ring channel in an S-shaped trend so as to diffuse and flow towards the periphery, so that disorder and stagnation of flow in a traditional system are avoided, and continuous flowability of the wastewater is ensured.

The invention relates to the technical field of lithium ion battery negative electrode materials, in particular to a graphite negative electrode material and a preparation method thereof, a negative electrode plate and a lithium ion battery. The graphite negative electrode material comprises composite particles, the composite particles comprise graphite particles and polymer films coating the surfaces of the graphite particles, and the materials of the polymer films comprise polyolefin and / or polyurethane; the weight loss ratio of a TG curve obtained by carrying out a thermal weight loss test on the graphite negative electrode material in an air atmosphere at 200-600 DEG C is 1%-5%. The surfaces of the graphite particles are coated with a small amount of polyolefin and / or polyurethane, so that the specific surface area can be remarkably reduced, and the compaction density can be improved.

The invention discloses a spleen artery blood flow limiting stent and a using method, and particularly relates to the technical field of medical instruments.The spleen artery blood flow limiting stent comprises a supporting stent and a flow limiting stent, the supporting stent is arranged outside the flow limiting stent in a sleeving mode, the two ends of the flow limiting stent are fixedly connected with the inner side wall of the supporting stent, and the flow limiting stent is a covered stent; the flow limiting support comprises a contraction section and an expansion section, the contraction section and the expansion section are fixedly connected and communicated, and splenic artery blood flow in the supporting support flows in from the contraction section and flows out from the expansion section. According to the invention, spleen blood perfusion after partial spleen artery embolism operation can be reduced, and recurrence of splenic hyperfunction is reduced.

The invention relates to the technical field of extruder equipment, and discloses a medical polymer material processing extrusion device which comprises a main body, the top of the main body is fixedly connected with a feeding port, the back of the main body is fixedly connected with a motor, and the output end of the motor penetrates through the inner wall of the main body and extends into the main body. The extending end of the output end of the motor is fixedly connected with a screw rod, and the side, away from the motor, of the body is in bolted connection with a working box. When the connecting shaft rotates, materials accumulated in the inner cylinder can be stirred, the outer portions and the inner portions of the materials are mixed, the situation that when the materials are accumulated in the inner cylinder, the contact time of the outer surfaces of the materials and the inner wall of the device is long is avoided, and local high temperature generated by long-time staying of the materials at a mold outlet can be reduced; therefore, the color change and yellowing conditions of the material are reduced, and the molding quality after extrusion is improved.

This utility model discloses a jet pump propulsion device, comprising: a pump casing having a water inlet section with a water inlet hole; a drive assembly including an impeller and a power component for rotating the impeller, the impeller being rotatably disposed inside the pump casing; and a guide section located within the water inlet section, the guide section having a guide surface on the side near the impeller for guiding external water flow towards the impeller, the guide surface opposite the water inlet hole, and the guide surface forming a guide channel with the inner wall of the water inlet section, the cross-section of the guide channel gradually increasing in the direction close to the impeller. This utility model can reduce shaking and vibration during propulsion, improving the smoothness of propulsion.

The invention provides an air conditioner and a control method thereof.The air conditioner comprises a fresh air device and an oxygen generation device, the fresh air device comprises a fresh air device body and a fresh air pipe connected to the fresh air device body, and the fresh air pipe is provided with an outdoor pipe section located outdoors; the oxygen generating device comprises an oxygen generating device body and an oxygen conveying pipe connected to the oxygen generating device body, and the oxygen conveying pipe is communicated with the outdoor pipe section. According to the air conditioner, due to the fact that the oxygen conveying pipe of the oxygen generating device is directly communicated with the outdoor pipe section of the fresh air pipe of the fresh air device outdoors, the oxygen generating device can convey oxygen into the room through the fresh air pipe, and equivalently, only one fresh air pipe is connected between the indoor unit and the outdoor unit of the air conditioner with the fresh air device and the oxygen generating device; the indoor unit does not need to reserve an installation space for the oxygen conveying pipe, and therefore the size of the indoor unit can be reduced. Meanwhile, compared with the mode that the fresh air pipe and the oxygen production pipe penetrate through the wall at the same time, the occupied space is smaller when a single pipe penetrates through the wall, and installation, cleaning and maintenance are easier and more convenient.

The invention discloses a cooling device for efficient heat dissipation of a gearbox, and relates to the technical field of transmission devices. The radiator fan is rotatably mounted in the radiator main frame and is rigidly connected with the fan motor; one side of the cooling fan is provided with a cooling pipeline which is connected with a temperature control valve, and the other side of the cooling fan is provided with a cooling plate; an air inlet of the radiator is provided with an anti-flocculation net, and an air outlet of the radiator is provided with an air duct which is communicated with the cabin; the heat dissipation plates are of an integral aluminum magnesium alloy structure. The cooling pipeline is a double-layer high-elasticity fiber and steel wire winding rubber pipe; the temperature control valve is of a spring pressure type; the anti-flocculation net comprises an aluminum alloy frame and a diamond net; the surface of the radiator is coated with a graphene-containing coating; the ventilating duct and the exhaust hood are made of military silica gel coating glass fiber cloth; the cooling fan and the like form a penetrating type heat exchange core body; a reinforcing lifting lug is arranged on the main frame; the cooling capacity is guaranteed, the operation stability of the gearbox is improved, and the service life is prolonged.

The utility model relates to the technical field of nitriding furnaces, in particular to a circulating fan water cooling structure of an ultra-deep well type nitriding furnace, which comprises an impeller and a driving device used for driving the impeller to rotate, the driving device is connected with the impeller through a connecting device, and a water inlet and a water outlet are arranged on the side face of the driving device at intervals. The driving device is provided with a cooling device, one end of the cooling device is communicated with the water inlet, the other end of the cooling device is communicated with the water outlet, the connecting device is sleeved with a heat insulation device in the length direction, and the diameter value of the heat insulation device is not smaller than that of the impeller. According to the technical scheme, the driving device has the advantages that the driving device is cooled, and the production efficiency and quality of workpieces are improved.

The pneumatic locker comprises a shell assembly, a fixing shaft, an inner sliding sleeve, a piston assembly and a plurality of balls, and the fixing shaft is arranged in a containing cavity of the shell assembly and extends in the extending direction of the containing cavity; the outer peripheral surface of the inner sliding sleeve is provided with an outer conical surface of which the diameter is gradually increased along the extension direction of the fixed shaft; the inner sliding sleeve is movably sleeved with the piston assembly, the piston assembly divides the containing cavity into a pressure boosting space and a pressure bearing space which are not communicated with each other, and the inner side face of the piston assembly is provided with an inner conical face matched with the outer conical face; the plurality of balls are arranged between the outer conical surface and the inner conical surface; when gas is input into the pressure boosting space, the gas in the pressure boosting space pushes the piston assembly to move towards the pressure bearing space so that the balls can move towards the pressure bearing space, meanwhile, the distance between the outer conical surface and the inner conical surface is reduced, and therefore locking fit is formed between the piston assembly and the fixing shaft. According to the technical scheme, the consistency of each locking state can be greatly improved.

The invention provides a single-cavity device capable of rapidly switching circulation to control single-side air blowing, and relates to the technical field of active flow control, the single-cavity device comprises a wing section arranged in a wing of an aircraft, a jet flow pressurizing chamber is arranged in the wing section in a penetrating mode, and the two ends of the wing section are provided with an air source inlet and a jet flow outlet which are communicated with the jet flow pressurizing chamber respectively; the circular rector trailing edge module is movably arranged in the jet flow pressurizing chamber and is close to the jet flow outlet, a first jet flow seam is formed between the circular rector trailing edge module and the upper inner wall of the jet flow outlet, and a second jet flow seam is formed between the circular rector trailing edge module and the lower inner wall of the jet flow outlet; and the driving mechanism is mounted on the airfoil profile, and the driving mechanism is used for driving the circular rector trailing edge module to rotate in the jet flow outlet. Compared with the prior art, the method has the advantage of improving the response frequency when the aircraft is controlled.

The utility model discloses an explosion-proof control cabinet which comprises a shell and a multi-element integrated assembly, a plurality of supporting legs are fixedly arranged at the bottom of the shell, an opening and closing opening, a lower rotating opening and an upper rotating opening are formed in the shell, an opening and closing door, a rotating ring and a rotating disc are arranged in the opening and closing opening, the lower rotating opening and the upper rotating opening respectively, an air inlet pipe is arranged on the rotating ring, and an air outlet pipe is arranged on the rotating disc. An exhaust fan and an air outlet pipe are arranged on the rotating disc, and a transmission shaft is rotationally arranged on the shell through two supporting plates. According to the utility model, through the design that the air inlet pipe and the air outlet pipe can be rotated to adjust positions, the explosion-proof control cabinet can effectively avoid various obstacles such as industrial pipelines, other equipment or building structures on an installation site. No matter in a narrow underground pipe gallery or an equipment compartment with dense space, the pipeline layout can be flexibly adjusted, it is ensured that the air inlet and the air outlet are located at the optimal ventilation position, and the installation flexibility and applicability of equipment in the complex environment are remarkably improved.

The invention provides a strong heat dissipation type vehicle-mounted intelligent power unit, and relates to the technical field of engine power units, the strong heat dissipation type vehicle-mounted intelligent power unit comprises a power unit cabin, a cooling unit integrated body and a double-high-pressure fan assembly, an engine, a generator and an electric device are installed in the power unit cabin, and an air filter device is installed at the air inlet position of the top of the power unit cabin; the design that the double-high-pressure fan assembly is combined with a unique heat dissipation system is adopted, the reasonable layout of the intercooler, the water radiator and the generator radiator is included, the temperature of a cooling medium is accurately controlled, the heat dissipation efficiency is remarkably improved, it is ensured that the power unit can keep the proper working temperature under various working conditions, and the power unit can work stably. The service life and stability of equipment are effectively prolonged, an engine radiator and a water radiator are arranged in a split mode, the precise temperature control strategy of an intercooler of a double-high-pressure fan assembly and a high-pressure fan at the front end of a generator radiator is combined, and when the temperature of a cooling liquid outlet of the engine radiator reaches a set value, a fan is started to enhance heat dissipation.

The utility model relates to a cleaning machine with a drying function, which comprises a box body for restraining a washing cavity, an air blowing assembly and an air supply assembly, the air blowing assembly is arranged close to a first side wall of the box body in the washing cavity, the air blowing assembly is provided with air blowing holes arranged towards the washing cavity, and the air supply assembly is connected with the air blowing assembly; an air outlet is formed in the second side wall of the box body, the air outlet is located in the second side wall of the box body and is opposite to the air blowing assembly located on the first side wall, and the second side wall of the box body gradually arches outwards from the edge to the air outlet to form a guiding face used for conducting slow flow guiding on incoming air. The structures are matched with one another, the blowing range is expanded, drying dead angles are eliminated, meanwhile, airflow turbulence generated by vertical collision of exhaust airflow and the side wall of the groove body can be effectively reduced, the exhaust airflow can smoothly flow along the side wall in a neutral mode, therefore, the drying airflow is guided in order, the airflow updating speed is increased, and the drying effect is improved.

The utility model discloses a kind of bread fermentation temperature and humidity control device, it is related to bread production equipment field, to solve the problem of low precision, slow response, difficult maintenance of existing equipment temperature and humidity control, device includes flow guide shell and three-way switch valve, motor, impeller and annular heating pipe are equipped in flow guide shell, rear mesh cover helps air circulation, front end protective cover with flow guide cone;Three-way switch valve is connected with air pipe, steam pipe and air pipe, gas delivery can be switched, mounting bracket and auxiliary frame with temperature and humidity sensor are arranged on the outer wall of ring, sensor feedback data to control system, automatically adjust motor speed, heating tube power and three-way valve state.The device realizes accurate and stable control of temperature and humidity, airflow is uniformly transported, and has simple structure and high degree of automation, which is suitable for large-scale production of bread.

The present application relates to the technical field of charging and replacing cabinets, in particular to an electric vehicle charging and replacing cabinet with multiple battery compartments, which comprises a charging and replacing cabinet shell, a heat dissipation channel is arranged in the vertical direction inside the charging and replacing cabinet shell, and L-shaped shunt channels are symmetrically arranged inside the charging and replacing cabinet shell, and the heat dissipation channel is in communication with the bottom of the L-shaped shunt channels. The double air duct structure of the heat dissipation channel and the L-shaped shunt channels can flexibly adjust the operating state according to the season: in high temperature, the air flow efficiency can be improved by reducing the angle of the drainage plate and increasing the area of the external air outlet to quickly lead out the heat of the dense batteries in the multiple charging compartments; in low temperature, the air can be preheated and dehumidified by the electric heater of the preheating assembly and the multi-tooth plate of the moisture-absorbing resin, and the action of increasing the angle of the drainage plate and reducing the area of the external air outlet of the adjusting assembly can lead the residual heat in the heat dissipation channel into the charging compartment, which can maintain the activity of the uncharged batteries and avoid local overheating of the charging components.

The invention relates to the technical field of batteries, in particular to a graphite composite material and a preparation method and application thereof. The graphite composite material comprises a base material layer and a coating layer, and the coating layer comprises a first material layer and a second material layer; the base material layer comprises graphite; the first material layer comprises an amorphous carbon material, and the amorphous carbon material is doped with a first nitrogen element; the second material layer comprises a graphite material, and the graphite material has a porous structure and is doped with a second nitrogen element; the concentration of the first nitrogen element is greater than that of the second nitrogen element. According to the graphite composite material, the first material layer can ensure the reversible capacity and the rate capability of the material; the graphitization degree of the carbon material in the second material layer is high, the irreversible capacity can be reduced, the low nitrogen concentration is beneficial to improving the conductivity, and the porous structure can shorten an ion diffusion channel, so that the energy storage capacity and the rate capability are improved.

The utility model discloses a vehicle-loaded road air purification device and an air purification vehicle based on the vehicle-loaded road air purification device, the air purification device is installed at the bottom of the vehicle and comprises a purification box, one end of the purification box is provided with an air inlet system, and the other end of the purification box is provided with an air outlet system; the purification box and a chassis of the vehicle are detachably arranged; the air inlet system is arranged close to an air inlet grille of the vehicle; the air inlet system comprises a first air inlet assembly communicating with the purifying box and two second air inlet assemblies symmetrically arranged on the two sides of the first air inlet assembly. The first air inlet assembly is further provided with an air inlet grid in a communicating mode, and the two ends of the air inlet grid abut against the second air inlet assembly. According to the gas inlet system, a wide and efficient gas inlet area is formed through the synergistic effect of the first gas inlet assembly, the second gas inlet assembly and the gas inlet grid, the capture and enrichment requirements of pollution gas are fully considered in the design of the gas inlet system, and the gas enrichment efficiency is high.

The utility model discloses an automobile seat fabric drying, deodorizing and air suction device which comprises a support, a conveying system and a suction system, the front end of the support is provided with a front rolling shaft and an idler wheel, and the support is connected with a rear idler wheel through a conveying belt; the air suction cover is nested above the conveying belt and is provided with three ventilation openings connected with the exhaust fan; a motor driving rolling shaft is arranged in front of the bracket; a conveyor belt bracket and rollers are arranged on two sides; reinforcing pieces are welded in front of and behind the air suction cover and connected with an electric telescopic pipe. The front end of the device is provided with a third rolling shaft with a brush, and the rear side is provided with a blower air outlet connected with a heating blower; a cooling fan is arranged below the air suction cover, and a partition plate is arranged in the air suction cover. The double-conveying-belt design is adopted, the suction air pressure influence is reduced, the suction air cover is matched with the three exhaust fans to efficiently remove odor, and the height of the air cover is adjusted through the electric telescopic rod so that maintenance can be facilitated; the brush shaft cleans the surface of the fabric, the heating air blower conducts hot air deodorization, the cooling fan prevents the conveying belt from being overheated, and integrated efficient treatment of conveying, cleaning, drying and deodorization is achieved.

This utility model provides a water spray circulation system for ultrasonic testing, comprising: a water tank; a water pump, the inlet of which is connected to the water tank; a gas separation device, including a separation chamber and a defoaming plate, the separation chamber being connected to the outlet of the water pump, the inlet of the separation chamber being opposite to the defoaming plate, so that the water flow impacts the defoaming plate and flows downward along the plate surface to form laminar flow; and a water sprayer connected to the separation chamber, which contains an ultrasonic probe. The water spray circulation system for ultrasonic testing produces a water column with fewer bubbles, resulting in high detection accuracy for the tested object.

The invention relates to the technical field of unmanned aerial vehicles, in particular to a pesticide spraying unmanned aerial vehicle with a protection function. Comprising an unmanned aerial vehicle, the unmanned aerial vehicle is fixedly connected with a fixing frame, the fixing frame is fixedly connected with a storage barrel, the fixing frame is provided with a driving motor and a water pump, the driving motor is a double-shaft motor, and the water pump communicates with the storage barrel through a middle pipe; the side, away from the unmanned aerial vehicle, of the fixing frame is fixedly connected with a liquid distribution pipe through a fixing piece, a spray head is installed on the liquid distribution pipe, and a blocking plate is arranged in the storage barrel. According to the unmanned aerial vehicle, pesticide in the storage barrel is blocked by the blocking plate, the disorder degree of the whole pesticide in the storage barrel is reduced, and the situation that the pesticide in the storage barrel is turned over due to the change of the flight path of the unmanned aerial vehicle, the pesticide becomes unstable, foam is generated, light components in the pesticide move upwards, and consequently the pesticide concentration is uneven during spraying is prevented; and the final killing effect is reduced.

The present invention relates to the technical field of air coolers, and specifically to a vehicle carbon dioxide air cooler and a preparation method thereof, comprising a plurality of flat tubes, and also comprising a collecting groove opened at one end of a collecting tube, and right-angle plates are installed on the symmetrical outer walls of the collecting tube on both sides; an air avoidance groove is equidistantly arranged at the edge of the groove of the collecting groove, and the air avoidance groove is in the shape of a triangular pyramid; a plurality of mounting holes are equidistantly arranged on the cover plate, and after the cover plate is installed on the collecting tube, the mounting holes correspond to the air avoidance grooves one by one. In this scheme, a plurality of air avoidance grooves are opened on the side of the collecting groove, and a conical space is left at the bottom of the air avoidance groove after welding is completed, which can expand the flow space of the gas in the later stage. During the welding process, a guide block is set at the bottom of the air avoidance groove, and an inclined surface for airflow guidance is set on the guide block, so that the airflow can be directed toward the outlet pipe when entering the collecting tube from the flat tube, thereby reducing the turbulence of the internal airflow and further improving the stability of the internal air pressure.

The invention discloses a monolithic SAPO-34 molecular sieve and a preparation method and application thereof.The preparation method comprises the steps that the SAPO-34 molecular sieve, absolute ethyl alcohol, a silane coupling agent and a dispersing agent are subjected to ball milling, and powder is obtained; the preparation method comprises the following steps: uniformly mixing UV resin, a 2-functionality UV monomer, a 3-functionality UV monomer and a 6-functionality UV monomer, and adding a photoinitiator to obtain a premixed solution; the powder, the premixed liquid and a low-temperature pore-forming agent are subjected to homogenization treatment, photocuring 3D printing is conducted, and a printing green body is obtained; and calcining the printing green body. A photocuring 3D printing technology is introduced into the SAPO-34 molecular sieve, the internal pore structure of the molecular sieve can be accurately regulated and controlled, when the printed integral molecular sieve is roasted in an inert atmosphere, cured photosensitive resin is cracked at a high temperature, and when a small molecule product completely escapes, a net-shaped carbon skeleton is formed, so that the molecular sieve is formed. The skeleton structure provides excellent strength for the roasted molecular sieve, and the catalytic selectivity of the molecular sieve is high.

The invention discloses a low-wind-resistance suite of a fuel gas tractor, and relates to the field of fuel gas tractor arrangement planes.The low-wind-resistance suite of the fuel gas tractor comprises a back assembly, and the back assembly comprises a flow guide unit used for being installed on the rear portion of a vehicle cab and covering a vehicle fuel gas cylinder; the gas cylinder fixing unit is located in the flow guide unit, the bottom of the gas cylinder fixing unit is used for being connected with a vehicle frame, the flow guide unit comprises a supporting framework and a diffusion type flow guide cover located outside the supporting framework, the diffusion type flow guide cover is through in the front-back direction, and one end of the diffusion type flow guide cover is used for abutting against the rear portion of a vehicle cab; the bottle body placing frame is provided with a plurality of vehicle gas bottle placing spaces; the apron board assembly comprises two side apron boards which are located at the two ends of the bottom of the diffusion type air guide cover and used for being connected with a vehicle frame, and the tops of the side apron boards abut against the bottom of the diffusion type air guide cover. Wind resistance can be reduced, turbulence of airflow at a vehicle gas cylinder is avoided, and vehicle power is improved.

This invention provides a rear-mounted guide vane with a cylindrical body for an axial flow fan, belonging to the field of ventilation equipment technology. It solves the problems of insufficient airflow or low static pressure efficiency in the high static pressure zone in existing technologies. This invention includes a guide vane body, guide vane blades, and a central hub. The two sides of the guide vane body are the outlet side and the inlet side, respectively, with the diameter of the outlet side being larger than that of the inlet side. The guide vane body is integrally formed and has a conical ring shape. The inner wall of the guide vane body forms a first mounting surface, which is a conical ring structure. The central hub is ring-shaped, and several mounting protrusions are formed on one side of the central hub. The outer surface of the central hub and the mounting protrusions forms a second mounting surface. The guide vane blades are numerous and arranged in a circumferential array, fixed between the first and second mounting surfaces. The cross-section of the guide vane blades is a thin plate structure of uniform thickness with an arc shape. This invention has the advantages of reducing turbulence, increasing airflow in the high static pressure zone, high static pressure efficiency, and increased range.

The utility model relates to the technical field of water dispensers, and discloses a refrigeration and heat dissipation structure. An air inlet and an air outlet are formed in the side wall of the accommodating cavity; the semiconductor chilling plate is positioned in the containing cavity, the cold end of the semiconductor chilling plate is connected with a cold water container, and the hot end of the semiconductor chilling plate is aligned to the air outlet and connected with a heat dissipation plate; the fan is positioned between the heat dissipation plate and the air outlet and is used for blowing air to the air outlet; an air guide channel is arranged in the containing cavity, one end of the air guide channel is connected with the air outlet end of the fan in a sealed mode, and the other end of the air guide channel is connected with the air outlet in a sealed mode. According to the utility model, airflow blown out by the fan can be directly and efficiently discharged out of the accommodating cavity through the air outlet, so that the stability and continuity of the airflow are improved, the loss and disorder of the airflow are slowed down, the amount of retained air is reduced, the heat remaining in the accommodating cavity is reduced, the heat dissipation efficiency is improved, and the direct cooling effect is improved.

The present invention discloses a vehicle-mounted air purifier, comprising a housing and a filter device, wherein the sides of the housing are respectively provided with an air inlet filter and an air outlet filter, the filter device is located in the housing, the filter device comprises a spiral air inlet pipe, an air inlet fan, an expansion port and a filter layer, a through hole is provided at the top of the spiral air inlet pipe, the air inlet fan is installed in the through hole, the spiral air inlet pipe has an air inlet, the air inlet is directly opposite to the air inlet filter, the expansion port comprises an air inlet end and an air outlet end, the cross-sectional area of ​​the expansion port gradually increases from the air inlet end to the air outlet end, the air inlet end is connected to the top of the spiral air inlet pipe and communicated with the through hole, and the filter layer is installed at the air outlet end. By setting the expansion port, the cross-sectional area of ​​the air flow gradually increases from the air inlet end to the air outlet end, and according to the Bernoulli equation, the flow velocity gradually decreases along the air flow direction within the subsonic flow range, the impact force on the filter layer is reduced, the damage to the filter layer is reduced, and the utilization rate of the filter layer is improved.

The utility model provides a kind of oil fume separation net, including first outer oil net, inner oil net and second outer oil net, inner oil net is arranged between first outer oil net and second outer oil net, inner oil net is equipped with the inner flow guide piece of interval arrangement, cavity is equipped with between adjacent inner flow guide piece, and cavity is separated into two independent inner layer air ducts by partition column;First outer oil net is equipped with smoke inlet, and second outer oil net is equipped with smoke outlet;Smoke inlet, inner layer air duct and smoke outlet form separation air duct, form independent inner layer air duct, avoid the collision between the oil fume of different flow direction, reduce disorder, reduce noise.