76results about How to "Reduce spoilers" patented technology

A cooling module is presented, which includes a heat sink and a fan unit. The heat sink provides a base plate and a plurality of fins, with an outlet extending through the base plate and the fins formed on a first surface of the base plate, and with a second surface of the base plate attached to a heat generating unit. The fan unit is rotatably mounted on the heat sink and aligned with the outlet. With the above-mentioned structure, an air-guiding channel is formed between any adjacent two of the fins and communicates with the outlet for a part of air outputted by the fan unit to be guided through the air guiding channels and exhausted by the outlet. Consequently, disturbed flows and wind noise are decreased while cooling efficiency is improved.

The invention discloses a middle-bent axial flow fan blade, which comprises a hub and a blade. The blade comprises an outer periphery, a front edge and a rear edge. The middle-bent axial flow fan blade is characterized in that: the blade is in a wave shape that at least one continuous wave crest and wave trough are arranged in the radial direction from the front edge to the rear edge. Due to the adoption of the structure, high pressure transferred to the outer periphery is dispersed and prevented. The middle-bent axial flow fan blade can reduce the vortex and turbulence caused by radial flow, thereby improving the air flowing environment, improving the static pressure and the efficiency, and reducing the noise. The middle-bent axial flow fan blade can solve the common deformation problem existing in fan blade molding in the mold production, thereby reducing the manufacturing cost.

The invention provides an active respirator for children which comprises a respirator main body, wherein the respirator main body is a housing respirator main body; the outer side of the housing respirator main body is convex; a concave cavity is formed on the inner side of the housing respirator main body; the housing respirator main body comprises a front cover, a middle cover, a rear cover and a sealing ring, which are connected in sequence through snap fasteners; the sealing ring is contacted with a face; air inlet holes are formed at the joint of the front cover and the middle cover; air outlet holes are formed in the upper part of the middle cover; a filter unit is arranged on the middle cover and corresponds to the front cover; a cavity structure is arranged between the middle cover and the rear cover; a fan is arranged on the rear cover and corresponds to the filter unit of the middle cover; and an air outlet non-return valve, a battery connected with the fan, a control circuit board and a starting switch are arranged at the upper part of the rear cover. The active respirator is used for protecting children, is suitable for children to use in a hazy environment or other polluted environments, has a good protection effect and strong active air-suction power, is simpler and more convenient to manufacture, disassemble, assemble and clean, ensures a short and smooth air inlet passage, and meanwhile can avoid stimulation to lungs caused by the reason that air enters the lungs in case of high wind pressure.

The embodiment of the invention provides a manufacturing method of an organic thin film pattern, the organic thin film pattern, an array substrate and a display device, relates to the technical fieldof display, and can solve the problem of a non-uniform thin film caused by coffee ring effect and climbing phenomenon in the prior art. The manufacturing method of the organic thin film pattern comprises the following steps: forming ink droplets in a concave part in a thin film defining layer positioned on a substrate, wherein the ink droplets are a gel solution containing an organic functional material; gelatinizing the ink droplets; and drying the gelled ink droplets to form the organic thin film pattern.

The invention discloses a prestressed concrete cylindrical foundation with oblique supports. The prestressed concrete cylindrical foundation with the oblique supports is composed of a concrete cylindrical foundation, the concrete oblique supports, a concrete transition section and prestressed steel bars. The top cover of the concrete cylindrical foundation, the concrete oblique supports and the concrete transition section are poured as a whole. The concrete transition section is a hollow cylinder with linearly-changed diameter and thickness from the top to the bottom. The prestressed steel bars are evenly arranged in the ring direction on the wall of the transition tower section. The concrete oblique supports are evenly and radially arranged at the bottom of the transition section, and the prestressed steel bars are arranged inside the concrete oblique supports obliquely. A flange plate is embedded into the top of the transition section, and the transition section is connected with a wind turbine tower through the flange plate. The prestressed concrete cylindrical foundation with the oblique supports can improve prestressing condition of the structure, enable the structure to have no crack in the construction and the operation, enhances the durability and the stability of the structure, and is simple in improved structure, easy to construct and wide in application.

The invention provides a structure for preventing stone from being clamped in a tire slot. A preset amount of such structures are arranged on a tread; the structure comprises a patterned tire slot and a convex step group; edge walls at two sides of the tire tread slot are respectively set to be a first side wall with a preset inclination and a second side wall with a preset inclination, and the inclinations of the edge walls of the first side wall and the second side wall are different; and the convex step group is arranged in the patterned tire slot and provided with a first convex step with a preset height and a second convex step with a preset height respectively on the first side wall and the second side wall; the first convex step and the second convex step are respectively provided with a curved surface convexly extending at a preset curvature and are continuous along the first side wall and the second side wall; and therefore, through the matching of the first side wall and the second side wall which have different inclinations and are arranged at two sides as well as the first convex step and the second convex step which have different curvatures of the curved surfaces and are arranged on the first side wall and the second side wall, small broken stone is not easy to clamp when the stone enters the slot, and then, the effect of preventing the stone from being clamped is achieved; meanwhile, the situation of turbulent flow is reduced, so that better drainage performance is achieved, the stone is easier to automatically discharge, the service life of a tire is prolonged, and the safety of the tire is improved.

The invention provides a bionic underwater glider with undulatory fins. The bionic underwater glider comprises a pressure-resistant outer cylinder, a head end cover and a tail end cover, a flow inletsection and a flow outlet section are installed on the head end cover and the tail end cover correspondingly, and a pair of undulatory fin devices is mounted on the two opposite sides of the tail portion of the pressure-resistant outer cylinder. The undulatory fin devices create sinusoidal waves so as to generate propulsion for a machine body, and when the motion direction, the amplitude and/or the frequency of the sinusoidal waves is changed, the propulsion produced by the undulatory fins is also changed so as to control the machine body to move. The bionic underwater glider with the undulatory fins solves the technical problem that a traditional underwater glider is in lack of a power source and effective communication means, so that the mobility and stability under water are poor.

The invention discloses an intensified heat exchange tube provided with a spiral grooved tube with a spiral fin inserted inside. The intensified heat exchange tube comprises a reserved unthreaded tube, a spiral finned tube and the spiral grooved tube which are connected sequentially. The spiral finned tube is composed of the unthreaded tube and the spiral fin welded into the unthreaded tube, the width of the fin is 0.3-0.4 times the inner diameter of the unthreaded tube, and the total length of the fin is equal to the screw pitch length of 1-2 fin spiral lines. The spiral fin enables turbulent flow of the spiral groove tube section to be greatly enhanced, and reduces flowing resistance. When the spiral fin is matched with the spiral grooved tube, the heat exchange coefficient is higher than that of the spiral grooved tube by 3% to 10%, and the flowing resistance is reduced by 16% to 30%. The tube section with the fin inserted inside of the heat exchange tube with the spiral fin inserted inside is independently machined, small in length, convenient to wash and small in material consumption, saves space, can be matched with various tube sections of different types and has quite important engineering application value to further development of the intensified heat exchange tube.

The invention discloses an ultrasonic wave opposite irradiation type water meter. The ultrasonic wave opposite irradiation type water meter is structurally characterized in that two opposite irradiation type energy converters are installed inside a water meter body, a measurement tube is connected between the two opposite irradiation type energy converters, and the two opposite irradiation type energy converters are completely attached to the tube wall of the measurement tube. The front ultrasonic wave energy converter and the back ultrasonic wave energy converter are connected with an ultrasonic wave timing module through signal lines, the connection lines are the same in length, the ultrasonic wave timing module is connected with a single chip microcomputer, and the single chip microcomputer is connected with a liquid crystal display module. The ultrasonic wave opposite irradiation type water meter has the advantages that two opposite irradiation type energy converters perform direct opposite irradiation measurement, so paths for sound wave transmission are shortened, losses for sound wave transmission are reduced, 100% sound wave opposite irradiation can be achieved, and measurement is more accurate and product quality is more stable accordingly; streamline type appearance is adopted in the opposite irradiation type energy converters, the opposite irradiation type energy converters can be completely attached to a tube section of a basic meter, so water resistance is reduced, turbulent flow is quite small, and through measurement tube rectification, measurement errors are small.

The invention discloses a different-propeller multi-axis aircraft structure and an operation method. The aircraft structure comprises two types of propellers and has two types of corresponding power rotating speeds. The specific principle of the different-propeller multi-axis aircraft structure is as follows: two symmetric powers located on a spray nozzle are high-speed powers, and the propellers matched with the powers are small propellers with the higher pitch and smaller size. Low-speed power and large propellers with small pitch and large size are adopted for other axes. The aircraft structure has the advantages that the high-speed power rotating speed of the small propellers matched with high-speed powers is higher than that of the large propellers matched with low-speed powers under the same condition, and the airflow speed produced by the high-speed powers is obviously higher than that produced by low-speed powers. The distances between the propellers with the reduced size and other propellers are enlarged, mutual turbulence is reduced, downward movement of fog drops is facilitated, fog drops sprayed by the spray nozzle below the high-speed powers is blown downwards under the drive of high-speed airflow, so that better penetrating power is obtained.

The invention refers to a micro power dissipation electric control valve. Driving shaft is equipped on the middle of the up bear frame. The upside of the down bear frame is equipped with motion valve plate. And the downside is fixed with fixed valve plate. The up end surface of the motion valve plate is connected to the down end surface of the driving shaft. The inter-space between the motion valve plate and the fixed valve plate is actively oriented by the central shaft of the valve plate. Blowhole and drain-hole, which are connected to fillister, are set on the motion valve plate. And blowhole and drain-hole are also set on the constant valve plate, of which the up end surface of the none-hole region is set with annular blowhole fillister and annular drain-hole fillister that connects to the fillister of the down end surface of the motion valve plate. The outer force caused by the open and close process of the invention has no direct relationship with the pressure of the air and liquid in the pipe. Thus, it can satisfy the design request of the micro power dissipation but mass flow. It has been verified that the invention could save more than 80% energy compared with the same type electric control valve driven by electric mini-motor.

The invention discloses a throttling valve for hydraulic and electric pipelines of an extracorporeal shock wave lithotripter. One end of the pipe body is connected with a first- and second-stage constriction tube, the end of the second-stage constriction tube is connected with a three-stage constriction tube, and the other end of the pipe body is plugged. A movable inner tube, elastically connected between the movable inner tube and the pipe body, a pressure relief hole is opened on the tube wall of the movable inner tube, a plug joint is provided at the end of the movable inner tube, and a limit flange is provided on the outer periphery of the tube wall of the movable inner tube , There is also a runner on the movable inner tube, and the rotating runner can open and close the hydraulic and electric pipeline. The pipe body of the hydraulic pipeline throttle valve of the extracorporeal shock wave lithotripter of the present invention is designed to be gradually tightened, so that a part of the impact force generated by the internal fluid can be partially buffered, and the generation of turbulent flow inside the fluid can be reduced. At the same time, the elastic movable casing The setting can absorb part of the internal energy of the fluid, and the excessive internal pressure can be discharged from the pressure relief hole, which greatly improves the stability of the hydraulic pipeline.

The invention relates to the technical field of ultrasonic nondestructive testing, in particular to a water spraying coupling laminar flow generating nozzle for ultrasonic C scanning. The nozzle comprises a spray head, a laminar flow generation assembly is arranged in the spray head, the laminar flow generation assembly can change passing water flow into a laminar flow state, one end of a middle pipe tightly presses the laminar flow generation assembly in the spray head, a flow stabilizer is arranged in the middle pipe, and the flow stabilizer can change the water flow into relatively smooth and stable flow from turbulent flow. The rear cover tightly presses the flow stabilizer in the middle pipe; and a plurality of front-back through water inlets are formed in the rear cover, a water outlet is formed in the center of the water outlet end of the spray head, and the water inlets and the water outlet face the same direction. The water inlet and the water outlet face the same direction, and the water inlet and the water outlet are arranged in the same direction, so that the turbulent flow phenomenon can be reduced, the stability of a water column sprayed by the spray head is guaranteed, and the water column is in a laminar flow state.

The invention discloses an automobile oil cooler. The automobile oil cooler comprises an oil cooler pipe body, wherein the oil cooler pipe body has inner and outer layer pipe walls; the pipe ends of the inner and outer layer pipe walls are sealed; an oil passing cavity is defined between the inner and outer layer pipe walls; an oil inlet is formed in one end of the outer layer pipe wall, and an oil outlet is formed in the other end of the outer layer pipe wall; and the oil inlet and the oil outlet communicate with the oil passing cavity. The automobile oil cooler is characterized in that irregularly distributed first pits are densely arranged on the outer layer pipe wall; irregularly distributed second pits are densely arranged on the inner layer pipe wall; some of the first pits and the second pits align to each other, and some of the first pits and the second pits are staggered; and the depth of the first pits and the second pits is equal to a half of the distance between the inner layer pipe wall and the outer layer pipe wall. According to the automobile oil cooler, the structure is simple, the cooling area is increased, a better engine oil cooling effect can be achieved, and the production cost is effectively reduced.

The invention provides a high-performance axial flow fan for range hoods, which includes a casing and a centrifugal wind wheel installed in the casing and driven by a motor. The centrifugal wind wheel is at least composed of radially distributed arc-shaped blades, adjacent An air duct is formed between the arc-shaped blades, and the air duct is inclined toward the air outlet of the fan along the direction from inside to outside. The inclined air duct design makes the high-pressure wind generated by the centrifugal fan rebound to the exhaust outlet of the fan after hitting the inner wall of the casing, and will not enter the centrifugal fan again. The turbulence between the inner walls of the casing improves the overall fluid dynamic efficiency of the fan, thereby reducing the movement wind resistance of the centrifugal fan, enabling the centrifugal fan to rotate at high speed and generate high-pressure air above 600Pa, so that the grease in the oil fume can condense into small oil Drops, improving the separation of oil and fat.

The invention relates to an FFU four-air-duct box structure, which comprises a FFU box, one side of the top of the inner cavity of the FFU box body is connected with a universal fixing plate; the universal fixing plate is arranged to be of a rectangular settling tank structure. A controller is mounted in the universal fixing plate; the center of the top of the FFU box body is connected with an airinlet mesh enclosure structure which comprises a protective cover in sealed connection with the FFU box body; a mounting through groove is formed in the top of the protective cover; the inner side ofthe mounting through groove is connected with an air inlet mesh enclosure; an air inlet is formed under the air inlet mesh enclosure. The structure is simple, stable and reliable, convenient to install and use, capable of enhancing the structural strength of the box body, pressure-resistant and durable. Four air channels can be formed by adopting the structural form of the four downwind guide plates, internal turbulent flow points are reduced, airflow in the box body is smoother and more uniform. Meanwhile, the box body structure is simplified, assembling is convenient, the working efficiencyis improved, energy consumption is reduced, and cost is saved.

The invention relates to a streamline passenger vehicle tail plate. The streamline passenger vehicle tail plate comprises a tail plate body and is characterized in that: the tail plate body is arc-shaped streamline tail plate; and bracket components are distributed in the tail plate body. Specifically, each bracket component comprises a main frame body; and longitudinal fastening strips and transverse fastening strips are distributed in the main frame body. Therefore, due to combination of the arc-shaped streamline tail plate, a rear wind glass mounting groove and a taillight accommodating groove, the beautiful degree is increased; the whole streamline model of the passenger vehicle tail plate is realized; turbulent flow and wind resistance of the vehicle are reduced; and oil consumption is reduced. Furthermore, due to interaction of the main frame body, the longitudinal fastening strips and the transverse fastening strips, the whole firm degree of the tail plate body can be guaranteed.

The invention provides an audio radiant tube. The audio radiant tube comprises an entry end arranged behind a loudspeaker unit, and an arc exit arranged at the periphery of a cone of the loudspeaker unit and coaxial with the loudspeaker unit; the width of the exit in the arc distributing direction is larger than that of the entry end in the corresponding direction, and the width of the exit in the arc radial direction is smaller than that of the entry end in the corresponding direction. The invention provides the audio radiant tube, whose entry end is coaxial with the loudspeaker unit, thereby achieving the effect of a full-range approximate point acoustic source. Moreover, the audio radiant tube can reduce the resistance and turbulent flow to acoustic waves spreading therein. Moreover, the audio radiant tube can be widely applied to a passive vibrating diaphragm unit structure and a paraphase structure.