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135results about How to "Improve suction capacity" patented technology

Sound suppressor cooling system

A firearm sound suppressor cooling system comprising a sound suppressor housing with means for reducing the pressure of gases exiting from a discharged firearm with a shroud that is attached to the exterior of the sound suppressor housing, an annular chamber formed between the sound suppressor housing and the shroud, and a nozzle positioned at the distal end of the sound suppressor and the shroud. The nozzle produces a suction effect upon discharge of the firearm and due to the suction effect, ambient air is aspirated through the annular chamber, and cools the firearm sound suppressor.
Owner:CRONHELM PETER WILLIAM

Novel sweeping and absorbing integrated cleaning mechanism

ActiveCN103510484AOvercome structureOvercome the defect of poor cleaning abilityRoad cleaningRoad surfaceEngineering
The invention provides a novel sweeping and absorbing integrated cleaning mechanism. The novel sweeping and absorbing integrated cleaning mechanism comprises a rotating cleaning brush carried by a sweeper. A shell making contact with the ground in a soft mode covers the rotating cleaning brush. A pumping pipeline is communicated with the upper portion of the shell. Due to the adoption of the technical scheme, the novel sweeping and absorbing integrated cleaning mechanism breaks through the structural form of traditional sweepers and integrates a rubbish brushing and sweeping mechanism and a rubbish pumping mechanism; the cleaning brush is rotated to brush and sweep rubbish in the shell in a rotating mode, is prevented from being absorbed on the ground and is in a free floating state. Negative pressure is formed in the shell through the pumping pipeline, the rubbish is pumped to a rubbish can of the sweeper through the pumping pipeline and is stored, and the cleaning brush is rotated to be matched with the shell and the pumping pipeline to form an Archimedes spiral type rubbish absorbing structure. The novel sweeping and absorbing integrated cleaning mechanism is strong in rubbish pumping and intake capacity and overcomes the defects that the traditional sweepers are single in structure and poor in cleaning ability. Compared with the prior art, the novel sweeping and absorbing integrated cleaning mechanism is thorough in road surface rubbish cleaning, efficient, novel and reasonable in structure and strong in practicability.
Owner:HUAQIAO UNIVERSITY

Air purifier

The present invention provides an air purifier, which comprises: a power supply PCB connected to the fan motor to receive a power supply supplied from an external power supply port; a main PCB receiving a power source supplied from the power supply PCB; a sensor device electrically connected to the main PCB; a flow conversion PCB that receives a power supply from the power supply PCB and controls the driving of the gear motor to switch the direction of the air flow generated in the blower fan; and a plurality of PCB cables connecting any of the power supply PCB, the main PCB, and the flow conversion PCB.
Owner:LG ELECTRONICS INC

Vacuum-cleaning robot

A self-propelled vacuum cleaner has a main housing having a bottom wall formed with an aperture, floor-engaging wheels on the main housing, and a drive in the main housing for rotating the wheels and advancing the main housing in a normal horizontal travel direction. A module housing projecting through the aperture forms a brush compartment defining a downward directed suction opening having relative to the direction a leading edge and a trailing edge. The module housing is supported in the main housing for limited vertical movement of the module housing relative to the main housing. A brush in the module housing is engageable through the opening with a floor beneath the opening, and a blower in the module housing having an intake connected via a duct to the brush compartment for aspirating air through the opening and past the brush into the module housing.
Owner:WESSEL WERK

Electric-controlled permanent magnetic chuck

The invention relates to an electric-controlled permanent magnetic chuck, comprising a coil, a magnet steel, a magnet yoke and a permanent magnetic chuck of a magnetic pole, wherein the magnet steel is composed of a reversible magnet steel and a non-reversible magnet steel. The reversible magnet steel is used in a main magnetic circuit; the coil is arranged around the reversible magnet steel and the non-reversible magnet steel is arranged at two sides of the reversible magnet steel as the auxiliary magnet steel. The magnet yokes are arranged at two sides of the reversible magnet steel and the non-reversible magnet steel. The end of the magnet yoke is connected with the magnetic pole. The main magnetic circuit consists of reversible magnet steel, coil, magnet yoke, magnetic pole and sucked objects and the auxiliary magnetic circuit consists of the non-reversible magnet steel and the non-reversible magnet steel magnetic conduction connecting board. The main magnetic circuit structure and the auxiliary magnetic circuit are connected into an integral structure by a non-magnetic conductor. The invention is suitable for swinging a plurality of square billets and high-temperature square billets after heat insulating process. The mobile magnetic pole can greatly increase the suction efficiency for a long period application. The invention greatly expands the application range of the electric-controlled permanent magnetic chuck and provides a new way for the development of the hoisting electromagnet.
Owner:岳阳鸿升电磁科技有限公司

Electric blower and electric vacuum cleaner utilizing the same

InactiveUS20110277267A1High suction performanceReduce lossMechanical cleaningPressure cleaningImpellerEngineering
Air guide (10) that rectifies air blown out from an impeller includes a plurality of guide vanes (80) having a circular arc shape. In a cross-sectional shape of each one of flow passages (81) of air guide (10), length B of a straight-line portion in a shaft direction of an inner wall-surface formed by one of guide vanes (80) on an outer peripheral side is small compared with length A of a straight-line portion in a shaft direction of an inner wall-surface formed by one of guide vanes (80) on an inner peripheral side. This provides a uniformed flow velocity distribution inside flow passages (81), resulting in a reduced loss caused by differences in flow velocity.
Owner:PANASONIC CORP

Method for analyzing response of steel catenary riser to waves

InactiveCN101713707AIncreased power couplingCreate an analysis methodStructural/machines measurementCatenaryFloating platform
The invention belongs to a technique for researching a steel catenary riser of a deep-sea oil and gas platform and particularly relates to a method for analyzing the response of a steel catenary riser to waves. In the method, a model of an elastic ground beam is used to simulate a streamline section of the steel catenary riser and the simulative models of the overhung section and the streamline section of the steel catenary riser are combined with the equation of motion of a floating platform to built an integrated motion analysis model of the steel catenary riser and the floating platform, the equation of the integrated motion analysis model is solved to obtain the response of the steel catenary riser to waves, and at the same time, a model of the suction of sea bed soil is built according to the influence of the suction of the sea bed soil to the steel catenary riser and is used in the analysis of the response of the steel catenary riser to waves. The method can improve the accuracy of the calculation of the steel catenary riser and makes the analysis of the steel catenary riser closer to the actual situation of a project.
Owner:OCEAN UNIV OF CHINA

Vacuumizing system and method for vacuum cabin of ramjet engine

The invention belongs to the technical field of ramjet engine tests, and in particular relates to a vacuumizing system and a vacuumizing method for a vacuum cabin of a ramjet engine. The system comprises a vapor source, a vapor distributer, a first-stage ejection device, a second-stage ejection device, a muffling tower and a switch valve, wherein the first-stage ejection device and the second-stage ejection device are connected in series; a vapor inlet of the first-stage ejection device communicates with the vapor distributor through the switch valve; a vapor inlet of the second-stage ejection device communicates with the vapor distributor; a vapor outlet of the second-stage ejection device communicates with the external environment through the muffling tower; a vacuumizing inlet of the first-stage ejection device communicates with the vacuum cabin to be vacuumized; and the vapor distributor is connected with the vapor source. The system and the method, provided by the invention, have the advantages of large working range and high vacuumizing ability.
Owner:XIAN AEROSPACE PROPULSION TESTING TECHN INST

Ducted air conditioner and air conditioner

The invention provides a ducted air conditioner and an air conditioner, and relates to the technical field of air conditioners. The air supply effect is guaranteed, meanwhile, the occupied space of the ducted air conditioner can be reduced, and noise can be lowered. The ducted air conditioner comprises a shell, at least one turbofan and a heat exchanger. The shell comprises a top face, the top face is used for being connected with an indoor ceiling, and an air return opening and an air outlet are formed in the shell. The turbofans are arranged in the shell, and rotary shafts of the turbofans are perpendicular to the top face of the shell. The heat exchanger is arranged in the shell and located among the turbofans and the air outlet. The ducted air conditioner is used for the air conditioner.
Owner:QINGDAO HISENSE HITACHI AIR CONDITIONING SYST

Deep sea steel catenary vertical pipe touchdown point power response analyzing method

The invention relates to a deep sea steel catenary vertical pipe touchdown point power response analyzing method. The method includes: simulating a steel catenary vertical pipe a large-deflection camber beam model, using the movement of a floating platform as the top end boundary condition of the vertical pipe, using a P-y curve method to numerically simulate the mutual effect, including linear elasticity rigidity when a seabed does not deform, the suction force effect when the vertical pipe leaves the seabed and nonlinear rigidity in a reciprocation effect, of the steel catenary vertical pipe and the seabed, building the mutual effect model of the steel catenary vertical pipe and the seabed, combining the mutual effect model with the movement equation of the floating platform and the simulating module of the steel catenary vertical pipe, and applying the combined model to the steel catenary vertical pipe touchdown point power response analyzing. The method has the advantages the existing methods simulating the seabed into a linear elastic spring or a rigid seabed are modified, the mutual effect of the steel catenary vertical pipe and the seabed can be accurately simulated, and calculation precision of steel catenary vertical pipe touchdown point power response analyzing is increased.
Owner:ZHEJIANG OCEAN UNIV

Gas lift reverse circulation sand washover well washing process and equipment for sandstone geothermal well

PendingCN108104749AStrong circulation suction abilityBeneficial to appearCleaning apparatusFlushingLiquid storage tankAir compressor
The invention provides a gas lift reverse circulation sand washover well washing process and equipment for a sandstone geothermal well. The process comprises the following steps: in a sand washover process, compressing gas in a gas storage tank by an air compressor to form compressed gas; feeding the compressed gas into a gas injection tube from a high-pressure pipeline through a gas feeding tubevia a cavity between an internal body and an external body; then delivering the compressed gas from a gas injection tubular column and a gas mixing tubular column to a gas mixer and mixing the compressed gas with sand washover liquid to generate a gas lift effect; and raising gas, liquid and solid three-phase liquid flow lifted by gas from a sand washover oil tube and then enabling the gas, liquidand solid three-phase liquid flow to enter the internal body of a double-walled gas injector and a water eye of a lower joint so as to reach a ground liquid storage tank via the high-pressure pipeline. The equipment comprises the double-walled gas injector, the gas injection tubular column, the gas mixing tubular column, a sand washover nib and a sand washover drill bit. By a gas lift reverse circulation sand washover technology, a circular suction ability is high, raising of well bottom or water layer settled sand is facilitated, moreover, the sand washover liquid flow can carry large dirtysand particles, repeated breakage of the dirty sand particles is reduced, and therefore, the sand washover efficiency is improved.
Owner:中石化绿源地热能(陕西)开发有限公司
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