122 results about "Bernoulli's principle" patented technology

An aerodynamic vibration power-generation device is provided, including at least a brace, and at least a blade. The blade is attached to the brace at least with one side. The blade is an aerodynamic vibration element, with at least an embedded piezoelectric transducer. The piezoelectric transducer embedded in the blade includes related circuitry for electrically connecting to a load unit. When the airflow passes along the surfaces of the blade, the difference between the air speeds on both sides of the blade will generate a pressure difference on the surfaces of the blade, according to Bernoulli's Principle, and the pressure difference will cause the blade to deform and vibrate. The fluttering and the oscillation of the blade caused by the continuously changing airflow speeds will cause the embedded piezoelectric transducer to generate electricity.

Method and apparatus to utilize the push-pull power of an upwards flow of wind energy within a structure with one or more open tops; for ventilation, moisture condensing and producing mechanical energy for useful work, which will include producing electricity. Including a unique application of “Bernoulli's Principal” that allows the maximum amount of wind energy to be captured, channeled and/or concentrated within that structure over its height; to directly operate any number, type, form, size and/or shape of wind powered devices to transform this wind energy into mechanical energy. Then this mechanical energy can be used by machine devices to produce useful work, propel vehicles and/or to condense moisture from humid wind energy through momentum with geometric moisture condensing devices.

The invention discloses a balancing device for logistics containers. The balancing device comprises a tank body, wherein the lower part of the tank body is connected with a vehicle frame; a balance monitoring mechanism and a control unit are arranged inside the tank body; groove bodies are arranged on the two sides of the tank body; arc-surface plates are vertically arranged inside the groove bodies through telescopic supporting columns; and the balance monitoring mechanism, the control unit and the telescopic supporting columns are sequentially connected. According to the balancing device, when a logistics vehicle drives at a high speed, the wind pressure on the left and right sides is adjusted through utilizing the bernoulli principle, the logistics containers are guaranteed to be balanced, and the accidents that the vehicle turns over and the like are avoided; and besides, the higher the speed of the logistics vehicle is, the higher the adjustment strength is, and the better the stability is.

A fluid delivery system utilizes Bernoulli pressure differentials and kinetic forces is provided. The system includes a pressurized channel in fluid communication with a flexible pressurized line for translating pressurized fluids to a mixing chamber. The mixing chamber is also in fluid communication with a source channel receiving fluids from a flexible source line. The mixing chamber is configured for entraining the source fluids with the pressurized fluids 26 using Bernoulli principles. Kinetic valves may be used in conjunction with, or in lieu of, the Bernoulli siphoning.

The present invention provides an intake air control capable of implementing a highly accurate constant negative pressure control with a smaller number of process steps under various environments. The intake air control is applicable to an engine having a variable valve actuation mechanism for adjusting at least a lift amount of an intake valve to control an intake air amount and a throttle valve for keeping a gauge pressure in an intake manifold at a desired gauge pressure. A reference throttle opening area is determined by referring to a first table based on a desired intake air amount. The first table defines a relation between an intake air amount and a throttle opening area under a reference gauge pressure, a reference atmospheric pressure and a reference intake air temperature. A throttle opening area for achieving the desired gauge pressure is determined by correcting the reference throttle opening area with a correction parameter derived based on the Bernoulli's law by using the desired gauge pressure, a current atmospheric pressure and a current intake air temperature.

The invention relates to a positive and negative paddle negative pressure adsorption device based on a Bernoulli principle. The adsorption device comprises a main frame, a power motor, a power input shaft, a contra-rotating generation mechanism, a forward propeller power output shaft, a reverse propeller power output shaft, a forward propeller, a reverse propeller and a support. The contra-rotating generation device converts one-way rotating torque transmitted from the power input shaft into positive and negative two-way rotating torque. The positive propeller power output shaft is of a hollowshaft structure; the upper end is connected with the contra-rotating generation mechanism; the reverse propeller power output shaft is of a solid shaft structure; the upper end of the reverse propeller power output shaft penetrates through the forward propeller power output shaft and is connected with the contra-rotating generation mechanism; strict same rotating speed and opposite rotating directions of the positive and negative paddles are realized; the forward rotating torque generated by the forward paddle and the reverse rotating torque generated by the reverse paddle are mutually counteracted, and the forward paddle and the reverse paddle adopt the propellers with opposite spiral coefficients, so that the fluid movement directions are consistent, the fluid acceleration enhancement effect is achieved, and the negative pressure adsorption efficiency is improved.

The invention relates to a hydrofoil wheel unit aided ice collector and a method for using the same, which are characterized in that the hydrofoil wheel unit aided ice collector comprises supports, a collecting arm, hydrofoil wheel units, an ice accumulation cage and an ice receiving tank. The method for using the hydrofoil wheel unit aided ice collector includes: firstly, sea currents act to the bottom of each ice collection bucket to supply rotation force to the collecting arm; secondly, currents flowing by the convex arc face of each hydrofoil is higher than the currents flowing by the concave arc face in terms of speed, so that a force from the concave arc face to the convex arc face of each hydrofoil is supplied to the hydrofoil according to Bernoulli's Principle, and the hydrofoil wheel units are rotated. The forces enable the collecting arm to rotate, the ice collection buckets on the collecting arm collect in the floating crushed ice, the crushed ice in the ice collection buckets slip out and into the ice receiving tank when the ice collection buckets pass a highest point, and then the ice collection buckets enter the sea water again to collect ice. The hydrofoil wheel unit aided ice collector and the method of using the same have the advantage that as natural sea current force is used to drive the sea ice collector to collect the sea ice, energy sources can be saved greatly.

The present invention discloses a high flow low pressure suction device. The device is a non-contact suction device based on multiple stage turbulence based low pressure suction mechanism which comprises fan(s) or rotating impeller(s) for drawing air/fluid/slurries operates without any seal between the device and the sucked surface. The device compounds this turbulence based low pressure generation along with Bernoulli's principle to yield a high efficiency suction device. The device implements the above concept by making the air/fluid/slurries flow through two or three zones selected from the acceleration zone(s), turbulence zone(s) (high turbulence zone) and smooth zone(s) (minimum turbulence zone). The device works by pulling the air/fluid/slurries into the vacuum chamber, accelerating the air/fluid/slurries, creating turbulence in the air/fluid/slurries in a thin region near the perimeter in order to cause a drop in pressure and then maintaining pressure over a large bottom area and finally exhausting the air/fluid/slurries through the fan(s)/rotating impeller(s).

The invention relates to a method for increasing thrust for a water jet propulsion unit, in particular to a method for increasing thrust for a water jet propulsion unit by the aid of lead-in air. The method includes that the water jet propulsion unit is mounted at a predetermined position of a ship, and comprises a power engine, a water guide channel and a nozzle, the power engine is used for driving a propeller, the propeller is accommodated in the water guide channel, and the nozzle is arranged at an outlet end of the water guide channel; more than one air releasing outlet is arranged in a region in the water jet propulsion unit, and high-speed axial water flow flows through the region; an air lead-in device is provided and comprises at least one air guide tube, an air inlet at the upper end of each air guide tube is arranged at a predetermined position of the ship, and the lower section of each air guide tube is connected to the corresponding air releasing outlet; negative pressure is generated at each air releasing outlet by the high-speed axial water flow in the water jet propulsion unit by employing a Bernoulli's principle so as to suck air; and after the air flows into the air releasing outlets from the air guide tubes, is exhausted via the air releasing outlets and is mixed with water, numerous bubbles are formed. The air is led into the water jet propulsion unit by the aid of the negative pressure, so that the efficacy of increasing the thrust is achieved.

An apparatus for processing wafer-shaped articles comprises a rotary chuck having a series of contact elements surrounding a wafer-shaped article when mounted on the rotary chuck. A non-rotating plate is positioned interiorly of the series of contact elements. The plate includes a gas supply that is configured to supply gas so as to support a wafer-shaped article without contacting the non-rotating plate according to the Bernoulli principle.

This invention, an Aerial Lifting and Propulsion Device, introduces an aircraft and aircraft wing design that has an outer and inner circumference, both of which are employed in the entirety of each to evacuate air, air space, and/or atmosphere from above the circular wing/craft, to the area beneath the circular wing/craft, through the use of a propeller inside the inner circumference of the circular wing, and impellers at the outer circumference of the circular wing. When the air, air space, and/or atmosphere forced from above the circular wing into the area beneath the circular wing and propeller attempts to escape to the top of the circular wing to fill the newly created low pressure area above the circular wing, it is intercepted at the lower edge of the outer circumference of the circular wing and forced to returned to the area beneath the circular wing, where the atmospheric pressure is further increased or decreased at will, depending on the pitch and speed of the aircraft propeller and impeller blades. The noted reduced atmospheric pressure at the top of the circular wing, and the higher controlled atmospheric pressure in the area beneath the circular wing and propeller, forces the circular wing upward from its stationary position, achieving lift as described in Bernoulli's Principle. Stabilization and directional control is maintained through adjustments in the pitch of the impeller and propeller and the effects of torque are neutralized by the rotation of the impeller and propeller assemblies in opposite directions. The Aerial Lifting and Propulsion Device maintains its upright configuration while airborne in part because its center of gravity is well below the points where lift is generated.

This landing craft is capable of transporting heavy tracked and/or wheeled vehicles and troops from amphibious assault ships to beachheads or piers. A flat bottom has an unique design using Bernoulli's principle. The benefits are good speed, efficiency, durableness, and relatively economical and low noise.

The invention discloses a horizontal well oil-gas-passing water blocking device. The horizontal well oil-gas-passing water blocking device mainly comprises a device body (29), an inlet (1), a main runner (2), a first circular truncated cone runner (4), a buffering runner (6A), a second circular truncated cone runner (7), a third circular truncated cone runner (8), a fourth circular truncated conerunner (9), a fifth circular truncated cone runner (10), a cut-in runner (11), an outer cavity rotary runner (12), an inner cavity rotary runner (14), a first branch runner (19), a second branch runner (21), a third branch runner (23) and an outlet (15). The horizontal well oil-gas-passing water blocking device is designed according to the Bernoulli principle and the Y-shaped runner flow dividingand phase splitting principle, can be used for water blocking of low-viscosity and ultra-low-viscosity crude oil wells and can also be used for water blocking of gas wells. The horizontal well oil-gas-passing water blocking device is suitable for being installed on a new well to be used for balancing the inflow profile before formation water breaks through a shaft and installed on an old well to be used for greatly increasing the additional resistance of water after formation water breaks through the shaft, and the purposes of reducing the water content and improving the oil-gas recovery ratioare achieved.

The invention discloses a water hammer eliminating and pressure reducing device for valve protection. The water hammer eliminating and pressure reducing device comprises a first connecting pipe, a device body and a second connecting pipe which are sequentially arranged from left to right. The water hammer eliminating and pressure reducing device has the advantages that in the water hammer eliminating and pressure reducing device, on one hand, in a first straight plane, a first inclined plane, a second straight plane, a second inclined plane and a third straight plane with the widths constantlyincreased, according to the Bernoulli principle, the water pressure is gradually reduced when the width is gradually increased; on the other hand, water flow constantly extrudes a plurality of pistonplates, a second spring is compressed, air in a first compression cavity and a second compression cavity passes through a first communication pipe and a second communication pipe to be pressed into first flow stopping bags and second flow stopping bags, the first flow stopping bags and the second flow stopping bags in a plurality of acting pieces can form flow stopping planes for closing a waterpassing port, and valve impacts are avoided; and due to compressibility of air, a third compression cavity can further achieve the pressure reduction function, the water hammer is thoroughly eliminated, the structure is simple, and the manufacturing cost is low.

The invention discloses a reverse supporting device for bridge gap repairing and an implementation method of the reverse supporting device for bridge gap repairing, the reverse supporting device for bridge gap repairing comprises a supporting shell and supporting mechanisms movably installed at the two ends of the supporting shell, an operator places the supporting shell in a bridge gap, and elastic mechanisms are placed at the two ends of the bridge gap; suction cups B are sucked at two ends of the bridge gap; the supporting shell is supported for preventing sliding out of the outer end of the gap; a piston C is arranged in a suction cup opening in the upper end of the suction cup B, a movable rod is installed at the upper end of the piston C, an arc-shaped piece is installed at the upper end of the movable rod, when wind exists, the wind blows to the upper arc face and the lower arc face of the arc-shaped piece, and the flow speed of the lower arc face is lower than that of the upper arc face. According to the Bernoulli principle, a certain pressure difference is generated between the upper arc face and the lower arc face of the arc-shaped piece, so that the arc-shaped piece ascends upwards to drive the piston C to be lifted upwards, the air pressure in the suction cup B is reduced, the suction cup B is sucked more tightly, and the wind-resistant effect is good.

The invention relates to the technical field of feed processing and discloses a screening and spraying device for feed processing based on the Bernoulli principle. The device comprises a base, whereina first fan blade is arranged at an upper part of the first rotating shaft, an upper part of the integral shell is connected with a screen, the upper side of an inclined plate is provided with a ventilation plate, a lower end of the first rotating shaft is fixedly connected with a centrifugal device, an upper part of the centrifugal device is surrounded by a third through hole, a lower end of thecentrifugal device is connected with a second rotating shaft, a lower end of the second rotating shaft is provided with a second leaf, the first rotating shaft drives the centrifugal device to rotate, the large particle feed enters into the centrifugal device through the first rotating shaft for centrifugal processing and then is thrown out through the third through hole, a second rotating shaftis driven by the centrifugal device to rotate, and the second rotating shaft drives the spraying liquid on an inner part of an outer side of a conical plate through a second blade to be included in the spraying liquid collection box. The device is advantaged in that problems of waste of feed spray liquid and excessive grease of feed in a feed screening and spraying device in the prior art are solved.

The invention discloses a gas flow rate and pressure relationship demonstration instrument. A base (10) is arranged. Two vertical plates which are arranged with spacing are arranged in parallel on the base. A fan impeller is arranged between two vertical plates. Both ends of the impeller shaft (1) are supported in through holes arranged in two vertical plates. One end is connected with a speed controlled motor (2) arranged on a vertical plate. A set of micro pressure gauges (8) is arranged on the front side of the other vertical plate. The U-shaped tubes of the micro pressure gauges are fixed on the plate face. Scales are engraved on the plate face. The probes or pressure sensors of the micro pressure gauges are arranged in a chute (15) arranged on a plate face. The chute is a through hole which is communicated with the back. The position of each probe is adjustable, so that the wind speed of different locations can be felt. According to the invention, students can visually feel the relationship between flow rate and pressure in a fluid, and can better understand the Bernoulli's law.

The invention relates to the technical field of precision castings, and discloses an automatic positioning precision casting marking device based on the Bernoulli principle. The automatic positioningprecision casting marking device comprises a bottom plate; a plurality of air pipes are connected to the right end of an air extraction device; a first metal ball is arranged at the lower end of eachair pipe; a detection device corresponding to the corresponding first metal ball is arranged at the outer side of each air pipe; a second metal ball is arranged at the upper portion of each fixing block; the upper end of each second metal ball is connected with a second metal sheet; and coils are arranged inside an adjusting device. Through the positional deviation between a to-be-coded workpieceand the adjusting device, the numbers of the open and closed fixing air pipes before and after are different, the coils push magnets to drive the second metal balls to move on the second metal sheets,and a driving device drives the adjusting device through a gear to move on a support frame, so that the structure solves the problems that an existing precision casting marking device cannot automatically position marking positions, and is low in working efficiency, and high in cost and working intensity.