70results about How to "Reduce the air speed" patented technology

The present invention is a compact, highly efficient method for convectively cooling substrates, where the substrates contain light emitting diodes (LEDs) or other highly dissipative electronic components. The methodology exhibits very low acoustic noise, extended operating life of moving parts and minimum susceptibility to dust. Also, the improved cooling methodology for high brightness light emitting diodes employs one or more high-density, high-surface-area, single or multiple-element metallic structures having superior heat-transfer properties in the presence of low-speed, minimally turbulent air flow, and enhanced electronic-power-management.

The subject invention pertains to a vacuuming machine with a primary chamber in which vacuum pressure within allows the ingress of debris through a hose. Air and debris entering the primary chamber decelerate upon entry into the chamber which allows debris to settle out of the air column within the primary chamber. Air within the primary chamber is evacuated through an enlarged filter and duct system that carries the air through a filter hopper and fan plate to a rotating fan. The blades of the fan move air and particulate matter through a second duct into a secondary chamber in which another deceleration of air and debris allows additional debris to settle to the bottom of the secondary chamber before air is finally evacuated from the vacuum machine.

A xenon arc lamp for a motion picture projector is cooled by providing the anode end of the lamp with a shroud that forms part of a support for that end of the lamp. Cooling air flows into the shroud along the support arm and enters the shroud through a slot in its side wall. The shroud provides an annular air space around the anode end of the lamp and has an annular air outlet through which the cooling air leaves as a "sheet" of laminar air flow which tends to adhere to the surface of the bulb, thereby providing precise cooling. In this way, arc instability is avoided or minimized, while lamp life is extended.

The invention discloses a commercial high-efficiency energy-saving gas stove head comprising a stove head outer sleeve, a stove ring, a stove core, a gas guiding cover, a gas nozzle, an air distributing disk, a gas cavity, an air inlet pipe, and the like. The commercial high-efficiency energy-saving gas burner is characterized in that the stove ring and the stove core which are supported by the gas guiding cover are integrally arranged in the stove head outer sleeve, the lower side wall of the gas guiding cover is provided with an air inlet hole, a stove core through hole which passes through the stove core is evenly arranged on the stove core, the upper part of the stove head outer sleeve is horizontally connected with the air inlet pipe, and the gas nozzle is evenly and vertically arranged on the upper end surface of the gas cavity, passes through the bottom of the stove head outer sleeve and is inserted into the stove core through hole upwards. The commercial high-efficiency energy-saving gas burner can lead cold air to sufficiently absorb heat of the stove ring and the stove core, divide gas into a plurality of blasts, use high-speed gas to roll high-temperature to burn, increase gas burning efficiency and thermal efficiency of the stove head and have strong firepower, does not have temper risks and is suitable for the catering industry.

A pressure gradient or differential in a product distribution line for conveying granular particulate material, including at least one of seed or fertilizer, in an air flow to an agricultural field consistently decreases as air speed and velocity in the product distribution line decreases until a critical air speed is reached. Below the critical air speed, the particulate material may become susceptible to falling out of the air flow to potentially cause a blockage in the system. Accordingly, pressure sensors arranged in the product distribution line can be used to generate an air flow at an optimum velocity above the critical air speed yet below a maximum air speed associated with inefficient operation. The air flow can be adjusted to maintain the optimum velocity despite changes in at least one of a type of particulate material or a rate at which the particulate material is metered.

A gas generator for an air bag that can change the inflating (deploying) speed of the air bag is provided. The gas generator includes a vessel having a pressurized gas accommodation chamber for accommodating pressurized gas therein, a partition that divides the pressurized gas accommodation chamber into two sections, and a through-hole which is defined in the partition, for communicating the two sections. The gas generator also includes two ignition units containing gas generating agents therein, and a gas release unit disposed in the pressurized gas accommodation chamber and having a rupturable gas sealing wall. A single ignition unit can be disposed in each section or two ignition units can be disposed in one of the two sections.

A fixture arranged in combination with a sink. The fixture is fitted next to the basin of the sink and incorporates a part which projects over the basin of the sink, this projecting part carrying a water nozzle which is connected to a water supply. The arrangement further incorporates a hand dryer of the type which uses an air-knife mechanically to wipe the water from a user's hand, this air knife being discharged through a discharge outlet on the fixture, which apertures are connected to an air supply.

An air delivery unit includes a casing, an air delivery device arranged in a fan passage in the casing, and a fan guard that is arranged at an air outlet of the casing and has an air blowing surface having a grill structure and a hollow frame wall portion. An air blowing opening is formed in the frame wall portion of the fan guard. This structure allows the air to be blown also from the opening of the frame wall portion of the fan guard. This reduces the amount and the speed of the air blown from the air blowing surface of the fan guard having the grill structure. As a result, rise of static pressure of the air delivery device is suppressed and noise caused by interference between bars of an air blowing grill and the air is reduced.

A vacuum sweeper includes a blower for pulling debris in a stream of air through a vacuum duct, past the blower, out a blower discharge duct and into a hopper. Debris settles to the bottom of the hopper and the air exits the hopper through a return air duct having a discharge opening. The discharge opening is positioned near a vacuum nozzle inlet of the vacuum duct such that dust and debris in the return air stream is pulled back into the vacuum duct. The air discharge opening and the return air duct are sized to be larger than the vacuum nozzle inlet. The speed of the air exiting the discharge opening is thereby reduced increasing the percentage of the return air pulled back through the vacuum nozzle inlet instead of being blown out of the vacuum chamber and into the atmosphere.

A mobile terminal includes a front case accommodating a display on a front surface and having a receiver for outputting a sound, a rear case coupled to one side of the front case, a rear cover covering a rear portion of the rear case to form an appearance and having an air vent hole allowing air to flow in and out to maintain predetermined pressure, and a circuit board installed been the front case and the rear case, wherein an air flow port is formed on an inner side surface of the rear cover and protrudes from the rear cover toward the rear portion of the case to guide movement of air formed by an external force acting on the rear cover.

A fuel cell system includes an air compressor that supplies oxidant gas to a fuel cell installed in a fuel cell vehicle, a measured rotational speed acquirer that acquires a measured value of rotational speed of the air compressor, and a controller that calculates a rotational speed command value of the air compressor based on required generated power of the fuel cell, calculates a torque command value of the air compressor based on the calculated rotational speed command value and current rotational speed of the air compressor, and controls rotational speed of the air compressor based on the calculated torque command value. The controller estimates the current rotational speed of the air compressor baaed on the measured value of the rotational speed acquired by the measured rotational speed acquirer and a history of the calculated torque command value, and calculates the torque command value by using the estimated rotational speed.

The invention provides a three-blade-electrode type sliding electric arc discharging plasma generating device comprising a top plug, a central electrode, a shell, an electrode binding post, blade electrodes, a nozzle and a rubber cushion, wherein the top plug is embedded at the upper part of the shell and is tightly contacted with the shell; the central electrode penetrates through the center of the top plug and is placed into an inner space of the shell; three sets of blade electrodes are uniformly distributed in a reaction chamber of the inner space of the shell; the electrode binding post transversely penetrates through the rubber cushion and is connected with the blade electrodes; and the outer surface of the nozzle is tightly contacted with a tapered opening of the bottom end of the shell. When the three-blade-electrode type sliding electric arc discharging plasma generating device works, gas enters the nozzle from an air inlet pipe of the bottom and enters the reaction chamber at a higher speed from a sharp opening on the nozzle; the gas is subjected to a plasma reaction in a discharging region between the blade electrodes and the central electrode; and the gas is finally discharged out from a gas outlet pipe of the upper part. According to the three-blade-electrode type sliding electric arc discharging plasma generating device, the larger discharging region is formed in the reaction chamber so that led-in mixed gas is more sufficiently ionized in the reaction chamber, and the conversion efficiency of the mixed gas and the hydrogen output are improved.

Supply air conduit (7) along which air is sent from outdoors to indoors by the air supply fan (9), exhaust air conduit (8) along which air is sent from indoors to outdoors by the air exhaust fan (10), and heat exchange element (6) provided at a position where supply air conduit (7) and exhaust air conduit (8) intersect, for exchanging heat between indoor air and outdoor air for ventilation are included. In addition, in exhaust air conduit (8), humidity detection unit (14) is provided at a position upstream of heat exchange element (6), and, in supply air conduit (7), temperature detection unit (13) is provided at a position upstream of heat exchange element (6). In addition, controller (11) reduces, when a temperature detected by temperature detection unit (13) and humidity detected by humidity detection unit (14) are predetermined values, speed of an air supply motor and an air exhaust motor so that air flow rates at which moisture neither condenses nor freezes are attained.

A dual-mixture dual-oxygen-supplementation combustor with a positioning ignition and flame stabilizing structure comprises a liquid bearing plate, a cooker support and an inner / outer ring flame cover, wherein the outer side of the top of the inner ring flame cover is provided with a protruding edge, the outer ring flame cover is arranged on an upper gas mixing plate, a lower gas mixing cavity is further arranged at the bottom of the upper gas mixing plate, and the upper gas mixing plate is provided with a first oxygen-supplementation channel. A second oxygen-supplementation channel is arranged on the outer side of the inner ring flame cover. Optimization is performed by combining with the respectively advantages and shortcomings of side ignition and upper ignition, so that the flame cover meet the efficient ignition rate, and the combustion performance of an ignition hole is not also influenced. In addition, the protruding edge convenient to machine is further added at a thermocouple flame stabilizing hole, so that the gas outlet speed of the flame stabilizing hole is reduced, and accordingly floating flames are not likely to produce. The dual oxygen-supplementation channels can supplement oxygen and can also reduce the internal temperature of the combustor and a cooker product through air flowing, and accordingly the high-temperature environment of internal parts is improved.

The invention discloses a water-ring phase-change energy-storage under-floor air distribution air-conditioning system and an energy storage and energy release method thereof. The output end of an air source cold / hot water unit is connected with the input end of a water pump; the output end of the water pump is connected with the input end of a first electric valve and the input end of a second electric valve respectively; the output end of the first electric valve is connected with the cold / hot water input end of an air handling unit; the cold / hot water output end of the air handling unit is connected with the input end of the air source cold / hot water unit; the output end of the second electric valve is connected with the input end of a phase-change energy-storage rectifying device; the output end of the phase-change energy-storage rectifying device is connected with the input end of the air source cold / hot water unit; the first air output end of the air handling unit is connected with the air input end of a room through a first pipeline; the air output end of the room is connected with the first air input end of the air handling unit through a second pipeline; and the second air input end of the air handling unit is communicated with the atmosphere. By the system and the method, a cold / hot load during the day can be transferred to the night with low electricity price by utilizing the difference between peak electricity price and valley electricity price; the difference between a peak electric load and a valley electric load is relieved; and the economical efficiency of equipment operation is improved.

The invention discloses a dehumidifier. The dehumidifier comprises a shell; the shell comprises a first panel, a second panel, a third panel and a fourth panel which are connected with each other sequentially; the first panel is provided with a first air inlet; the third panel is provided with a second air inlet and a third air inlet; the fourth panel is provided with an air outlet; an air flue which communicates with the first air inlet, the second air inlet, the third air inlet and the air outlet is formed in the shell; a cross-flow fan arranged in the air flue introduces air flow into the air flue from the first air inlet, the second air inlet and the third air inlet and blows out the air flow in the air flue from the air outlet; the air inlet side of the cross-flow fan is arranged by facing towards the first panel; the air inlet side of the cross-flow fan is arranged back on to the third panel; a first heat exchanger, a second heat exchanger and a third heat exchanger are arrangedin the air flue and correspond to one air inlet respectively; and the three heat exchangers are combination of two dehumidifying assemblies and an air supplementing condenser. According to the technical scheme of the invention, the energy efficiency level of the dehumidifier can be increased.

The invention discloses a dehumidifier which comprises a shell, a cross-flow fan arranged in a wind channel, and three heat exchangers arranged in the wind channel and each corresponding to a wind inlet. The shell comprises a first panel, a second panel, a third panel and a fourth panel which are connected in sequence. The first wind inlet is formed in the first panel, the second wind inlet and the third wind inlet are formed in the third panel, and a wind outlet is formed in the fourth panel. The wind channel communicating with the first wind inlet, the second wind inlet, the third wind inletand the wind outlet is formed in the shell. An air flow is led into the wind channel through the first wind inlet, the second wind inlet and the third wind inlet, and the air flow in the wind channelis blown out from the wind outlet. The wind inlet side of the cross-flow fan is arranged facing the first panel and back on to the third panel. Each heat exchanger is a combination of two dehumidifying assemblies and an air compensating condenser. The specific value of the width h1 of the first wind inlet to the width h2 of the second wind inlet to the width h3 of the third wind inlet is (2-4):(1.5-4):1. The energy efficiency level of the dehumidifier can be improved.

The invention relates to the technical field of waste gas treatment, and provides a chemical tail gas treatment device capable of avoiding blockage and achieving automatic cleaning, the chemical tail gas treatment device comprises a treatment tank, the top of the treatment tank is fixedly connected with a shell, the inner wall of the shell is fixedly connected with a pipeline, and the left side and the right side of the pipeline are fixedly connected with expansion assemblies; the inner wall of the expansion assembly is movably connected with a lever. According to the chemical tail gas treatment device and method capable of avoiding blockage and achieving automatic cleaning, firstly, tail gas is conveyed through a pipeline, chemical particles existing in the tail gas can be attached to the outer wall of a filter plate along with the tail gas passing through the filter plate, the air permeability of the filter plate is reduced, and the air pressure in the pipeline is increased along with the fact that the tail gas continuously enters the pipeline; the piston is extruded by air pressure, and the piston compresses the compression spring to increase the volume in the pipeline, so that the air pressure in the pipeline is reduced, air circulation is prevented from becoming poor, and the pipeline is extruded by the air pressure.

A mobile terminal includes a front case accommodating a display on a front surface and having a receiver for outputting a sound, a rear case coupled to one side of the front case, a rear cover covering a rear portion of the rear case to form an appearance and having an air vent hole allowing air to flow in and out to maintain predetermined pressure, and a circuit board installed been the front case and the rear case, wherein an air flow port is formed on an inner side surface of the rear cover and protrudes from the rear cover toward the rear portion of the case to guide movement of air formed by an external force acting on the rear cover.

The present invention is a compact, highly efficient method for convectively cooling substrates, where the substrates contain light emitting diodes (LEDs) or other highly dissipative electronic components. The methodology exhibits very low acoustic noise, extended operating life of moving parts and minimum susceptibility to dust. Also, the improved cooling methodology for high brightness light emitting diodes employs one or more high-density, high-surface-area, single or multiple-element metallic structures having superior heat-transfer properties in the presence of low-speed, minimally turbulent air flow, and enhanced electronic-power-management.

A system (16) for providing an air lubricating layer between a substantially flat bottom (6) of the hull (4) of a vessel (1) and water flowing under the bottom as the vessel is moving through the water. The system has a cavity (33) with a deflector. The deflector has an elongate part (29,34,34′) extending in the length direction of the cavity over at least at least 5%, preferably at least 10% of the cavity length L, wherein a projected area of the at least one deflector member (24,24′-26,26′) on the interface plane (30) covers at least 25%, preferably at least 50%, most preferably at least 75% of the surface area of the interface plane.

The invention relates to the technical field of air purification, in particular to a metallurgical intelligent factory building air purification system which comprises a roof air collector arranged on a roof of a production workshop and a plurality of filter cartridge dust removers adjacently arranged on the side faces of the periphery of the roof air collector. The lower end of the roof air collector is directly communicated with the inner space of the production workshop, and an air inlet of the filter cartridge dust remover is directly in butt joint with the side face of the roof air collector and communicated to the interior of the roof air collector. According to the invention, the defects of large occupied area, high energy consumption, complex construction and the like of equipment in the existing workshop top gas purification technology are overcome.

A glycerin burning system having a specialized atomizing burner capable of combusting a continuous feed of crude or pure glycerin. The burner includes a two-fluid mixing nozzle. The nozzle has an internal distributor which mixes two fluid feed streams as the fluids are expelled through an orifice. The distributor has channels which cause the air to swirl before mixing with the glycerin. An impingement pin is provided outside the orifice to diffuse the mixture and reduce combustion air speed. To improve performance, the burner's air feed line is subjected to combustion chamber to preheat the air passing through the feed line before the air is mixed with the glycerin.

The invention relates to an air conditioner assembly, a control method, a control device and an air conditioner and belongs to the field of air conditioners. The air conditioner assembly comprises anair flue which comprises an air inlet, and the area of the air inlet is larger than the heat exchange area of a heat exchanger. The area of the air inlet is increased so that the area of the air inletcan be larger than the heat exchange area of the heat exchanger, under the condition that the air inlet quantity is certain, increase of the area of the air inlet can reduce the air inlet speed, andtherefore the air inflowing at the low air speed can be achieved; at the low air speed, the evaporating temperature is relatively low and is lower than the air dew point temperature; and meanwhile, atthe lower air speed, the heat exchange efficiency of the air and the heat exchanger can be effectively improved, the coagulating effect of water in air can be increased, and the dehumidification effect is accordingly improved.

The present inventors have recognized that a pressure gradient or differential in a product distribution line for conveying granular particulate material, such as seed or fertilizer, in an air flow to an agricultural field consistently decreases as air speed (velocity) in the product distribution line decreases until a critical air speed is reached. Below the critical air speed, the particulate material may become susceptible to falling out of the air flow to potentially cause a blockage in the system. Accordingly, pressure sensors arranged in the product distribution line can be monitored for effectively controlling an air source producing the air flow. In one aspect, a diameter of the product distribution line can increase between upstream and downstream locations for monitoring with even greater sensitivity.

A lithium titanate doped with a barium oxide and a manufacturing method thereof are provided. At first, a barium source material, a lithium source material and a titanium source material are mixed together to prepare a mixture. Then, a drying process is applied to the mixture. Thereafter, a sintering process is applied to the mixture after the drying process, thereby obtaining the lithium titanate doped with the barium oxide. The lithium titanate doped with the barium oxide has the following chemical formula: BaxLi4Ti5O12+x, wherein 0.006@x@0.12. A lithium ion battery is also provided, which has an excellent cycling stability, a fast charge-discharge capability and a high safety performance.