708results about How to "Reduce wind resistance" patented technology

A trailer body employs hollow and generally rectangular dual wall tubes stacked, interlocked and welded on both sides continuously to form each side of the trailer body. The extrusion walls are of varying thickness to minimize weight and maximize strength and durability.

A digital camera system providing two different image capture systems, comprising a camera body including a first surface having an image display; a second surface opposite to the first surface; a third surface transverse to the first and second surfaces and having a smaller surface area than the first and second surfaces; and a fourth surface opposite to the third surface. A first image capture system has a first optical axis directed outward from the second surface, and a second image capture system has an optical axis directed outward from the third surface. Camera mounts are provided on the fourth and first or second surfaces to facilitate mounting the digital camera system such that either the first optical axis or the second optical axis can be oriented in a substantially horizontal direction.

A pivoting cage cargo bed extender is pivotally mounted to the D-pillars of a pick-up truck to be pivotally movable between a forward position and a rearward position. In the rearward position, the pivoting cage serves as a supplemental tailgate structure that rests on the open tailgate to extend the operative area of the cargo bed. The pivoting cage is formed of individual segments that are hinged together and separable at the center into two halves that are each collapsible into a stowed position adjacent the respective side wall of the cargo bed. The two halves of the cargo bed are connectable with a latching mechanism at the center to form a pivoting cage structure that spans transversely across the floor of the cargo bed. The latching mechanism compresses an internal O-ring to provide a tight connection between the two halves.

Configurable large-area display system with a display (114) comprising a plurality of sub-displays that each contain an array of pixels (122), characterized in that it further comprises a central controller hardware and software block (110) containing software to control the display system (100) and to generate control data and video signals to be displayed on the display (114); a digitizer (112) that converts said control data and video signals to a digital signal compatible with the display (114); whereby the digitized control data and video signals are passed from one sub-display to the next, and whereby each sub-display is a control unit (116) capable of controlling the individual pixels (122) of said control unit (116) as a function of its position within the display (114) and of the received control data and video signals.

The present invention relates to metal carrier for automobile tail gas purifier catalyst and its preparation process, and solves the technological problem in providing metal carrier with simple formation process and low production cost. The metal carrier features its 3D netted structure with skeleton of metal nickel or nickel coated copper, and has porosity of 30-98 %, pore number of 20-60 PPI and pore size of 0.5-3 mm. The preparation process includes the following steps: treating foamed polyurethane or polyether plastic via chemical plating or vacuum vapor depositing to coat carbon-base conducting material; electrically depositing matrix metal of nickel or copper coated nickel; and burning out foamed plastic base in a pyrolysis oven. The metal carrier is mainly used as carrier for automobile tail gas purifier catalyst.

An air-guiding assembly for reducing the wind drag is provided at a tail end of a vehicle body and has a hollow frame. The frame is constituted of a plurality of air-guiding plates. These air-guiding plates are each formed into a curved shape. An airflow path is formed between the air-guiding plates. The front end surface of the frame is formed with an intake port, and the rear end surface thereof is formed with an exhaust port. The intake port and the exhaust port are in fluid communication with the airflow path. The area of the intake port is larger than that of the exhaust port, so that the exhaust port acts as a nozzle. When the airflow generated in driving is compulsively guided into the intake port of the frame to pass through the airflow path and then is guided out via the exhaust port, an invisible wind wall is formed in the rear of the vehicle, thereby reducing a whirlwind region in the rear of the vehicle. Therefore, the airflow is smoother and thus the driving efficiency is improved.

The invention relates to an air purification material and a preparation method and application thereof, belonging to the technical field of chemical catalytic decomposition, in particular belonging to the technical field of decomposition of formaldehyde pollutants in environment air. The air purification material comprises a base material and manganese oxide, wherein the manganese oxide is supported on the base material, the base material is honeycomb ceramics or a fiber material with a particle filtering function, and the manganese oxide is birnessite manganese oxide prepared from permanganate and oxalate. The air purification material can effectively decompose formaldehyde pollutants in indoor air and can rapidly and constantly remove the formaldehyde pollutants in indoor air at room temperature. The air purification material can be regenerated through heating, so that the service life of the material is prolonged and the practical application is facilitated.

Waveguide or flow guide surfaces can improve the efficiency of fluid flow through tubes or over surfaces. When incorporated in a tube, the waveguides improve flow and function as sound absorbers making them useful in engine mufflers, firearm silencer/suppressors and jet engine exhaust attenuators. On surfaces, the waveguides can reduce fluid drag and find use on projectiles (e.g., bullets), airfoils for aircraft, and land borne vehicles. The waveguide array in either a tubular chamber or on a surface comprises a plurality of successive wave-like undulations inclined generally in the direction of flow and when employed in tubes extending inwardly to permit an unobstructed path for the fluid gas from entry to exit. The waves define annular wave cavities between their successive inwardly extending edges and the wall of the chamber with each cavity having a cavity mouth open to the unobstructed path. The waveguides are sized and spaced so that gas vortices are created within the cavities when gas flow occurs which vortices create a fluid boundary layer that assists the gas flow.

A tiltable top is provided for a small boat which allows the boat operator to quickly, manually raise or lower the top as desired. The tiltable top includes a pivotal shade frame and cover which is retained in a normal horizontal position during use or which can be released and allowed to pivot to an acute horizontal angle to lower wind resistence of the boat when the top is lowered.

The invention relates to an air inlet grille control method and device and an engine management system. The air inlet grille control method comprises the steps that the current operation conditions of a vehicle are obtained, wherein the current operation conditions comprise the first current temperature of cooling liquid, the current vehicle speed, the current duty ratio of a pulse width modulation fan, the current on-off status of a fan and the current exhaust temperature; the target opening degree of an air inlet grille is determined according to the obtained current operation conditions of the vehicle and the unit angle, wherein the unit angle is the angle of each preset equally-divided part of the included angle between the minimum position when a motor is turned off and the maximum position when the motor is turned on; and the determined target opening degree of the air inlet grille is sent to the motor so as to enable the motor to adjust the opening degree of the air inlet grille according the received target opening degree. By adoption of the air inlet grille control method and device and the engine management system, the dynamic property and the fuel economy performance of the whole vehicle can be improved, and carbon emission is reduced.

The invention discloses an automobile warm air control method and an automobile warm air control device. The method includes steps: using a control circuit to load weak-current voltage; using a PTC (positive temperature coefficient) heater to load strong-current voltage; using the control circuit to detect temperature of the PTC heater and comparing the temperature of the PTC heater with a target temperature value; and using the control circuit to detect the voltage and the current of a strong-current circuit of the PTC heater through a photocoupling strong-weak current isolation circuit. The automobile warm air control method and the automobile warm air control device are characterized in that a driving circuit receives duty cycle pulse width modulation signals outputted by the control circuit by the aid of an IGBT (insulated gate bipolar transistor) to lead a collector and an emitter to be on or off; and a strong-current power source is applied to the PTC heater through the IGBT. Strong-current voltage of different frequencies is outputted under pulse width modulation control and duty cycle change to realize linear control of the PTC heater. The automobile warm air control method and the automobile warm air control device have the advantages that overhigh surface temperature of the PTC heater can be effectively avoided so that reliability is high and risks and potential hazards are avoided; electrodeless power adjustment and smooth temperature control are realized, and overheating and overcooling are avoided; and cost is low.

The invention discloses a supported integrated catalyst for formaldehyde purification and a preparation method thereof. The supported integrated catalyst consists of a titanium dioxide nanotube array supporter and precious metal M, wherein the precious metal M is one or a mixture of at least two of Pt, Ru, Rh, Pd and Au. The titanium dioxide nanotube array supporter is soaked in a precursor solution containing the precious metal and then is roasted to obtain a precious-metal-component-supported catalyst, and the catalyst is reduced through hydrogen or a reducing solution and can be directly used for catalytically purifying formaldehyde. The catalyst is simple in composition and preparation flow, and convenient to popularize and apply. The high activity and stability of the catalyst on the formaldehyde can be kept at low temperature, the formaldehyde can be catalytically oxidized under the condition that other additional devices are not needed, and can be converted into harmless H2O and CO2, and thus the green elimination of the formaldehyde is further realized.

The invention discloses an axial magnetic field magnetic flux switching type surface-mounted permanent magnet memory motor. The permanent magnet memory motor comprises a first rotor (41), a second rotor (42), a stator (1) and an installing shaft, wherein the stator (1) is arranged between the first rotor (41) and the second rotor (42) and of an axial two-side symmetrical structure, the installing shaft is used for coaxially installing the stator (1), the first rotor (41) and the second rotor (42), and the stator is located between the two rotors to form an axial two-air-gap motor. The stator (1) is of the two-side symmetrical salient pole structure and comprises a stator iron core (2), a plurality of permanent magnets (3), a three-phase armature winding (5) and a single-phase pulse winding (6). The stator iron core (2) comprises a stator yoke (2.1) and stator teeth (2.2), wherein the stator teeth (2.2) protrude in the center direction of the first rotor (41) and in the center direction of the second rotor (42) respectively from the stator yoke (2.1). By the adoption of the permanent magnet memory motor, power density of the motor is improved, and the wide rotating speed operation range is possessed.

A recreational vehicle loading and transport platform for pickups provides a base mountable in a pickup box to pivotally carry a transport platform below the upper edges of the pickup box. The transport platform carries outrigger assemblies laterally of and depending below the upper edge of the pickup box to support outer support structures of recreational vehicles straddling the pickup box sides. A pneumatic cylinder moves the forward end of the transport platform vertically to responsively tilt the transport platform for loading and unloading of recreational vehicles. A loading and unloading ramp is removably secured to the rear end of the transport platform to move between use and storage positions.

The invention discloses a matrix-type honeycomb photocatalysis plasma purifier comprising a housing and a purifying unit module arranged and between an inlet and an outlet in the inner cavity. The purifying unit module consist of a primary filter, an electrostatic precipitation filter, a photocatalysis plasma catalyzing and purifying filter and a positive-negative ion stirrer which are sequentially arranged from the inlet to the outlet; then the air sequentially entering from the inlet and having impurities is purified, and fresh air is discharged finally at the outlet. The matrix-type honeycomb photocatalysis plasma purifier integrates the functions of high-efficiency sterilization, virus killing, dedusting, deodorization, formaldehyde removal, decoration gas removal and organic waste gas degradation, realizes large specific surface and high dust collection efficiency and discharges static electricity at the front end and the back end so as to ionize the air with static electricity discharging efficiency higher than the conventional single-area static electricity discharging efficiency; the photocatalysis plasma catalyzing and purifying filter catalyzes and oxidizes harmful chemical odorous gas, and generated plasmas are in high concentration, so that germs can be completely killed; and the matrix-type honeycomb photocatalysis plasma purifier suffers little wind resistance and realizes massive dust collection.

The invention relates to a sunlight corresponding apparatus, which comprises a solar energy assembly mount, a raised support bracket, a rotating support framework, a left-and-right angle corresponding driving member and a pitch angle corresponding driving member. The solar energy assembly mount is hinged on the rotating support framework that is hinged on the raised support bracket; and accurate tracking on sunlight is realized on the basis of coordinated movements of the left-and-right angle corresponding driving member and the pitch angle corresponding driving member. According to the invention, the apparatus has a simple and reasonable structure; energy consumption for running is low; and the running accuracy is high; besides, the apparatus is easy to control and is convenient for installation and daily maintenance.

A vertical axis wind turbine blade is revealed. The vertical axis wind turbine blade includes a blade frame formed by assembly plates disposed at regular intervals and blade bodies each of which pivoted between two adjacent assembly plates. Stoppers are disposed between the assembly plates and the blade bodies. The stopper is used to stop on one side of the blade body corresponding to a downwind surface of the assembly plate. The blade bodies pivotally connected to the blade frame move along with the blade frame to be in an open or a closed position. When the wind blows the upwind surface, the blade body is stopped by the stopper and in the closed position so as to receive the wind power. While the wind blowing the downwind surface, the blade body is in the open position to reduce the wind resistance. Thus the wind turbine efficiency is dramatically improved.

The invention discloses a catalyst for catalytic combustion of VOCs and a preparation method of the catalyst. Cordierite honeycomb ceramic or a porous metal material is used as a carrier, the carrieris coated with a nano coating material, precious metal compound transition metal is used as an active component, compound rare earth oxide is used as a catalyst aid, and a solid solution prepared froman alkaline earth metal compound and main group metal oxide is used as a carrier modifier; the carrier and the active component are coated through an automatic production line; the catalyst has advantages of high substrate bonding force, high adhesive force between the active component and the carrier after high-temperature roasting, difficult shedding, high activity, good thermal stability, goodsulfur resistance and long service lifetime, is a broad-spectrum VOC oxidation catalyst, can be used for catalytic combustion treatment of VOCs in the industries of spraying, printing, electronics and the like, and is suitable for CO and RCO catalytic combustion devices.

The invention discloses an electric heater for an indoor unit of an air conditioner. The electric heater comprises an electric heating element. The electric heating element comprises a heating part and radiation parts. An array consisting of the radiation parts is arranged on the surface of the heating part. The outer radiation edges, facing outside relative to the heating part, of the array consisting of the radiation parts are at least partially exposed in an outer space. The structure of the electric heating element is changed, so the electric heater decreases a space occupied by the heating part in the indoor unit of the air conditioner, reduces air supply resistance, increases a supply air rate, betters the radiation effects of the radiation parts, improves the performance of the indoor unit and reduces noises produced by the running of the indoor unit.

The invention relates to an air guide column, an air exhaust device and an air conditioner. The air guide column comprises a columnar structure, wherein the columnar structure can rotate around a self rotary shaft, and an air guide passage (1) is arranged in the columnar structure, and is used for guiding the air flow at one side of the columnar structure to be exhausted to the other side. The air guide column has the advantages that by adopting the columnar structure which can rotate around the self rotary shaft, and arranging the air guide passage in the columnar structure for guiding the air flow to flow out, as the air guide passage in the columnar structure can form smoother air guide surface, compared with the existing air guide plate, the air drag is reduced; the air guide passage is used as the extending part of the air passage body at one side of the air guide column, so the air delivery distance is increased; by utilizing the rotation of the columnar structure, the air exhaust amount and angle of the air flow can be guided, and the air delivery effect is improved.

The invention discloses a heat exchanger fin and a heat exchanger and belongs to the field of heat exchangers and accessories thereof. The problems that existing fins are high in wind resistance are solved. The heat exchanger fin comprises a fin body and a fin side which are connected. A flat pipe groove for flat pipe penetrating is formed in the fin body. A supporting piece is arragned on the surface of the fin body and/or the fin side in a protruding mode. The supporting piece is in an arch bridge shape. Opening structures are arranged on the two side faces of the supporting piece. The opening structures form air passing channels along the surface of the fin. The heat exchanger comprises the flat pipe and the fin. The flat pipe is clamped into the flat pipe groove. The heat exchanger fin lowers fin resistance, the comprehensive performance of the fin is improved, and the problem that condensation water and defrosting water of a micro-channel heat exchanger for a heat pump cannot be discharged easily can be effectively solved. The heat exchanger well balance heat exchanging performance and fin wind resistance performance, and the problem that condensation water and defrosting water cannot be discharged easily is solved.

A blade system and method of use for a wind turbine to produce electrical power. The system has a vertical rotor shaft coupled to an anchor pad and supports a horizontal blade arm. A blade assembly having a rotatable flap is coupled to the blade arm. The flap captures the wind which causes the rotor shaft to rotate and generates electrical power from an electrical generator.

The sampler consists of glass tube, surface modified synthetic fiber tow with absorbing liquid and silicone rubber stoppers on two ends of the glass tube. The chemically inert synthetic fiber tow is puffed, soaked in mixed solution of sodium silicate and citric acid, surface coated with one layer of active silica, dried, washed and re-dried before being filled into the glass tube. The chemically inert synthetic fiber tow is then soaked with the absorbing liquid of various air pollutants, tumble-dried in centrifuge and the two ends are closed with silicone rubber stoppers to complete the sampling. The sampler may be used in sampling various air pollutants and has higher sampling and absorbing efficiency than available bubble method.

The invention discloses a chassis height self regulating system and a regulating method; wherein, the self regulating system comprises a suspension height sensor module, a central processing module, a display interactive module, an audio frequency prompt module and an execution module; wherein, the suspension height sensor module detects the suspension height of a chassis in real time, and transmits the change of the suspension height which is detected every time into the central processing module; the central processing module is connected with a bus of a bodywork, receives the running speed information of vehicles in real time, and processes the received information of the suspension height and the running speed of vehicles; according to the processing result, executive information is sent to the execution module for operation, and the suspension height is automatically regulated. The system of the invention can prompt the user when the running speed exceeds the specified value and automatically lowers the height of the chassis to the safe position in a state of default setting, so as to avoid the danger caused by overhigh center of gravity of the vehicles when in high speed travelling; at the same time, the invention improves the comfortableness when in driving, reduces the windage resistance, saves the fuel, and has good development prospect.

The invention discloses a wind power generation network camera monitoring and communication transmitting antenna tower and belongs to the technical field of wind power energy. The inner ventilation wind pulling force is utilized to enable ground air flow to pass through the inside of a tower seat, a tower column and a tower column head to be discharged from an air outlet to push a turbo type spherical air wheel and a wind scoop capable of being opened and closed automatically in the wind direction to rotate to guide a natural air source to push the air wheel to rotate from the upper portion, the middle portion, the lower portion and the inside, and the power generation capability is improved. The wind scoop is closed automatically in the wind direction, and wind direction resistance is reduced. A wind fixing ball enables the ground air flow to rise in the spiral tornado type from the surface of the wind fixing ball to generate spiral rotating torque. A wind power generator is utilized as a main power supply, a mains supply is utilized as a reserve power supply, the network camera monitoring and communication transmitting anti-war anti-disaster capability is improved, safety operation of urban monitoring and communication transmitting is ensured, and the tower saves energy and is environmentally friendly.

The invention discloses a dust-removing air purifier with double functions of anion sedimentation and high-voltage electrostatic adsorption. The dust-removing air purifier comprises a casing as well as an anion emission needle plate, a stacked high-voltage electrostatic cell, a positive pole filtering body and a fan which are sequentially arranged, wherein anion emission needles which discharge towards the positive pole filtering body and form potential difference with the positive pole filtering body are arranged on the anion emission needle plate, the stacked high-voltage electrostatic cell comprises negative plates and positive plates, an air channel is formed between each negative plate and the adjacent positive plate, each negative plate comprises two insulators with high resistance and high voltage resistance and a conductor which is located between the two insulators and has low resistance, and the positive plates have electrical conductivity and can lead out charges carried by electronegative particles directly contacted with the positive plates in the air channels. According to the dust-removing air purifier, the wind resistance is low, the use noise is small, frequent cleaning is not required, single air purification efficiency is high, bacteria and viruses in air can be killed, the problems about wall blackening and influence on human health are solved, and secondary pollution caused by starting up is avoided.

The invention provides an air conditioner and an indoor unit thereof. The indoor unit of the air conditioner comprises a shell, a first air-guiding plate and a first driving device, wherein an air flue is arranged in the shell; an air outlet which is communicated with the air flue is formed in the shell; one end of the first air-guiding plate is rotationally arranged in the air flue; the first driving device is connected with the first air-guiding plate and is used for driving the first air-guiding plate to rotate; the first air-guiding plate can completely rotate to the outer side of the air outlet. Compared with the condition that the first air-guiding plate is fully located in the air flue or only can locally stretch to the outer side of the air outlet, the condition that the first air-guiding plate can completely stretch to the outer side of the air outlet according to the indoor unit of the air conditioner provided by the invention has the following advantages: on the one hand, the air resistance to the air flow caused by the first air-guiding plate located in the air flue can be reduced, so that the air supply volume can be increased and the air supply noise can be lowered, on the other hand, a function of prolonging the air flue can be achieved after the first air-guiding plate completely stretches out of the air flue, so that the air supply distance is prolonged and the air-blowing comfort level of the air conditioner is increased.

The invention provides a 'solar photovoltaic power generation device', which adopts an optical superposition method, three groups of reflecting mirrors (ordinary plate glass mirrors) are used for causing the sunlight to be fully superposed on a silicon chip on different levels, a 24-hour computer is matched to automatically track the sun, namely, longitude tracking, latitude tracking and earth revolution angle tracking, therefore, the effect that the power generation capacity of an ordinary solar chip is improved by more than 6.6 times is obtained. The power generation efficiency of the current silicon chip is 16 percent, while the power generation efficiency of the invention reaches more than 105.6 percent. The invention utilizes the equilibrium principle and puts the point of strength on the overcoming of the damping of a bracket instead of the self weight of the bracket, therefore, a gear is not easy to be damaged and power consumption is saved. By repeatedly testing, power consumption needed by the tracking device is only 3 percent to 5 percent of the self power generation (the power consumption includes electric energy consumed during the heat dissipation of the chip).

The invention discloses an automobile steering assisting aerodynamics external member which comprises two tail wing structures, two lifting passages and a hydraulic pipeline, wherein the tail wing structures are positioned in the lifting passages, and comprise main wings, auxiliary wings and driving mechanisms; the main wings and the auxiliary wings are arranged parallelly; the main wings are positioned below the auxiliary wings; the front ends of the auxiliary wings are close to the tail ends of the main wings; end plates are respectively arranged on the same side ends of the main wings and the auxiliary wings; the main wings are fixedly connected with the end plates; the auxiliary wings are rotationally connected with the end plates; the driving mechanisms comprise main wing cylinders, auxiliary wing cylinders and bases; rotating assisting cylinders are arranged on the bases; the hydraulic pipeline comprises a hydraulic pump, a main wing pipeline used for connecting or disconnecting the main wing cylinders synchronously, an auxiliary wing pipeline and a rotating assisting pipeline used for independently connecting or disconnecting each rotating assisting cylinder; strip-shaped through holes are formed in the front sides of the end plates and positioned above the auxiliary wings. The invention aims to provide the automobile steering assisting aerodynamics external member, which can adjust lower pressure and air resistance on the left side and the right side of the automobile tail to improve the adhesion property of an automobile and reduce tire load.

The invention provides a power unit of a large-power current transformer. The power unit comprises a whole power-unit frame, and a laminated mother board (10), insulated gate bipolar transistor (IGBT) power elements and drivers (12) thereof, a capacitor support plate (13), a support capacitor array (14), a radiator fixing plate (15), a radiator (16), a blower fan installing plate (17) and a heat radiation blower fan (18) which are placed within the whole power-unit frame. The whole power-unit frame comprises a rectangular installing plate (6) placed in the rear of the whole power-unit frame; the support capacitor array (14) is mounted on the installing plate (6) via the capacitor support plate (13); the heat radiation blower fan (18) is mounted on the installing plate (6) via the blower fan installing plate (17); the IGBT power elements and drivers (12) thereof are fixed are fixed on the installing plate (6) via the radiator fixing plate (15); and the laminated mother board (10) is parallel with the installing plate (6). Main components are mounted on the same installing plate, so that all the components are integrated and packaged to form the power unit.