374results about How to "Speed up the air flow" patented technology

A method to control injection timing for an internal combustion engine having a plurality of injectors in at least a cylinder, the method comprising of injecting a first fuel amount to at least a cylinder of an internal combustion engine from a first injector, injecting a second fuel amount fuel to said cylinder from a second injector, and adjusting the timing between starting or ending injection of said first fuel amount, and starting or ending of said second fuel amount in response to an operating condition of said engine.

A pre-mixer assembly associated with a fuel supply system for mixing of air and fuel upstream from a main combustion zone in a gas turbine engine. The pre-mixer assembly includes a swirler assembly disposed about a fuel injector of the fuel supply system and a pre-mixer transition member. The swirler assembly includes a forward end defining an air inlet and an opposed aft end. The pre-mixer transition member has a forward end affixed to the aft end of the swirler assembly and an opposed aft end defining an outlet of the pre-mixer assembly. The aft end of the pre-mixer transition member is spaced from a base plate such that a gap is formed between the aft end of the pre-mixer transition member and the base plate for permitting a flow of purge air therethrough to increase a velocity of the air / fuel mixture exiting the pre-mixer assembly.

[Object]An object of the invention is to provide a fan rotating blade for a turbofan engine capable of increasing a bypass ratio by increasing an intake air flow rate without enlarging a diameter of a fan and an inner diameter of a casing and of realizing a decrease in weight of an engine as well as a decrease in fuel consumption and noise.[Means for Solving the Problems]A leading edge part 11 of a fan rotating blade 10 for taking air thereinto is provided with a vertical hub portion 12 positioned on the hub side so as to be substantially perpendicular to a fan rotary shaft, a backward mid-span portion 13 inclined toward the downstream side from the hub side to the mid-span portion, and a forward inclined tip portion 14 inclined toward the upstream side from the mid-span side to the tip portion.

A cyclone comprises a cyclone chamber having an air inlet, an air outlet, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, wherein the first juncture downstream of the inlet is configured to at least approximate a portion of the shape of the air inlet that is adjacent the first juncture.

A water condenser includes a fan which draws a primary airflow through an upstream refrigerant evaporator, through an air-to-air heat exchanger and in one embodiment also an air-to-water heat exchanger uses cold water collected as condensate from the evaporator, the airflow to the evaporator being pre-cooled by passing through the air-to-air heat exchanger and the air-to-water heat exchanger prior to entry into the evaporator wherein the airflow is further cooled to below its dew point so as to condense moisture onto the evaporator far gravity collection. The evaporator is cooled by a closed refrigerant circuit. The refrigerant condenser for the closed refrigerant circuit may employ the fan drawing the airflow through the evaporator or a separate fan, both of which drawing an auxiliary airflow separate from the airflow through the evaporator through a manifold whereby bath the auxiliary airflow and the airflow through the evaporator, or just the auxiliary airflow are guided through the condenser and corresponding fan.

A method to control injection timing for an internal combustion engine having a plurality of injectors in at least a cylinder, the method comprising of injecting a first fuel amount to at least a cylinder of an internal combustion engine from a first injector, injecting a second fuel amount fuel to said cylinder from a second injector, and adjusting the timing between starting or ending injection of said first fuel amount, and starting or ending of said second fuel amount in response to an operating condition of said engine.

A fuel cell system and related method are disclosed having a system controller 37 that executes enthalpy calculation based on status signals, related to anode off-gas and cathode off-gas, detected by a temperature detector 29, a pressure detector 30 and a humidity detector 31 for thereby predicting a combustion temperature of a combustor 7 during purging. In the presence of a predicted combustion temperature exceeding an upper limit, cathode off-gas is increased in volume to limit a combustion temperature of the combustor 7 to a value below the upper limit value.

A handheld hair drying appliance (10) has an inlet portion (22) at one end that receives incoming airflow which is pulled in by a vacuum effect created by the rotation of a first fan blade (24) and a second fan blade (26), each coaxially aligned to rotate about a common axis. A tube-shaped sleeve (38) having a smooth, cylindrical inner surface is mounted inside of a tube portion (14) of the appliance and surrounds the motor and blade assembly such that the blade diameters are slightly smaller than the inner surface of the sleeve (34), but closely fitting, thereby optimizing vacuum pressure and air velocity to produce high output air velocity in an efficient manner.

An abrasive water jet processing machine for jetting a fluid and performing a cutting includes a fluid supply device, an abrasive supply device, an injection pressure controller, wherein the abrasive supply device includes a reservoir hopper consisting of a pressure vessel for reserving the abrasive, an abrasive supply tube for communicating with the reservoir hopper and the nozzle, and an air purge device for supplying compressed air to the abrasive supply tube and the reservoir hopper; the injection pressure controller performs a two-stage control of controlling injection pressure in a piercing; and the air purge device includes a flow pressure controller for controlling flow pressure of compressed air passing through the abrasive supply tube, wherein the flow pressure controller controls the flow pressure in the piercing to be higher than that in the cutting.

The present invention is directed to a 360 degree ventilation system with a single unitary plenum. The present invention is also directed to a 360 degree ventilation system with a single mixing chamber extending at least substantially entirely around the perimeter of the blow ventilation system. The present invention is also directed to a 360 degree ventilation system with a heating / cooling units that extend substantially all the way around the perimeter of the ventilation system. The present invention is also directed to a 360 degree ventilation system with a single return air chamber.

A fuel nozzle assembly for a gas turbine, the assembly including: a cylindrical center body; a cylindrical shroud coaxial with and extending around the center body, and a turning guide having an downstream edge extending in a passage between the center body and an inlet to the shroud, wherein the turning guide extends only partially around the center body.

A heat sink is provided that makes air velocity between cooling fins uniform in order to improve heat dissipation performance, thereby realizing a reduction in weight and achieving high cost performance. Distal ends of fins disposed substantially in front of a cooling fan are located on the uppermost stream side in the flowing direction of cooling air, and distal ends of fins on both sides in the width direction of the heat sink are located on the lowermost stream side. Each of the fins is preferably provided with a slope so that the height of the fin gradually increases from the distal end thereof in a direction from the upstream side to the downstream side in the flowing direction of cooling air.

Systems and methods for providing a self deflating cushion whereby a volume of air within the cushion is controllably released to a surface of the cushion thereby providing a cooling effect to the seated anatomy of a user. The cushion further provides a variety of internal, open cell cushioning materials that store and release air during use of the cushion.

A cyclone comprises a cyclone chamber having an air inlet, a vortex finder, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, the vortex finder has a wall that meets one of the first and second end walls at a second juncture, wherein the second juncture extends at an angle to both the wall of the vortex finder and the end wall on which the vortex finder is provided.

A blade for a wind turbine includes a means for causing air at an increased velocity and / or pressure to escape from exit openings in the blade, thereby to apply a force that increases the rotational velocity of the blade. In one embodiment of the invention described a fan or vacuum in the blade causes an increase in the air velocity within a hollow air chamber in the blade. In another embodiment of the invention described, a compressor or one-way valve is used to increase the pressure of the air within the interior hollow air chamber. Pressure and diameter adjustable valves may be provided at each exit opening or orifice to allow the air to exit from the blade only when the air pressure within the blade exceeds a preset level. Also disclosed is the provision of valves at exit openings or orifices on an opposite edge of the blade that allows air to escape from the blade to slow down but not stop the rotation of the blade when a dangerous wind condition is detected.

A ring insert for an air intake conduit for an internal combustion engine comprising a sleeve-shaped body which is tightly mounted within the air intake conduit. The body has an inner surface which includes an annular surface in the shape of a truncated cone defining an annular inclined surface that is narrower at the forward edge of the body than at the rearward edge forming a venturi directly adjacent the rearward edge. The forward edge of the body is smoothly contoured and the rearward edge of the body is smoothly contoured.

Embodiments of the present invention include computer-implemented methods for selectively applying remedial actions, according to a predefined order, for reducing the error rate in a computer memory system. In one embodiment, an ordered set of remedial actions are sequentially invoked in response to a single-bit error (SBE) in a DIMM reaching successive error thresholds. For example, in an air-cooled system, the remedial actions may include dynamically increasing a DIMM refresh rate, dynamically increasing a rate of airflow used to cool the DIMMs, and dynamically throttling the DIMMs. The remedial actions may be layered as they are successively invoked, to provide a cumulative remedial effect. At least two of the remedial actions may be simultaneously invoked in response to a multi-bit error rate reaching an associated threshold.

A display case cools and displays products. A first fan system circulates cool air through the display case. The cool air is directed downwardly along a front of the display case to form a primary air curtain. A second fan system circulates ambient air to generate a secondary air curtain. The secondary air curtain is located between the primary air curtain and the outside environment, trapping the primary air curtain near an interior display volume of the display case. Each end of the second fan system is several inches shorter than the display case to allow for case to case attachment. The second fan system includes a louver near each of the side walls and a front of the second fan system. Each louver includes a plurality of slanted panels. The louvers direct the ambient air towards the side walls of the display case to improve the secondary discharge air velocity in a front corner area of the display case.

A handheld blower includes a housing, the housing including an air inlet and a duct assembly, the duct assembly including a duct, a motor and a fan mounted in the duct, a battery, a handle, and a blowpipe which defines a central axis. Along the direction of the central axis, the area of the flowing cross-section of an air passage at the rear end of the fan adjacent to the air inlet is larger than that of the flowing cross-section of an air outlet of the blowpipe, and the rate between the area of the flow cross-section of the air outlet of the blowpipe and the area of the flow cross-section of the flow-through area at the position of the fan is greater than or equal to 0.8.

A cyclone comprises a cyclone chamber having a first end having a first end wall, a second end having a second end wall, a sidewall, an air inlet at the first end, an air outlet and a first central insert member extending away from a center of the second end wall into the cyclone chamber wherein the first central insert member comprises a central member wall extending away from the second end wall and the central member wall and the second end wall meet at a first juncture that extends at an angle to both the central member wall and the second end wall

A method for improving exhaust after treatment initial warm up during engine starting is presented. In one example, the method adjusts an engine air flow amount to a level where a desired substantially constant heat flux is provided by the engine to an exhaust after treatment device. The method may reduce fuel consumption and a need for a vacuum pump to provide vacuum to vacuum consumers of a vehicle during exhaust after treatment heating.

A dryer with a modular blower assembly that allows easy assembly and field servicing through replacement of the blower assembly as a unit. The blower assembly generally includes unique motor mounts that allow a motor assembly to be secured within a housing without being directly fastened to other members.

A wind turbine is disclosed which uses energy in air moving relatively toward the turbine to focus and increase the velocity of air entering a turbine inlet air flow passage. The inlet flow passage discharges focused and accelerated air to blades of a rotor where the blades interact with that air to turn the rotor. Rotor motion can be used to operate an electrical generator. The plane of rotation of the rotor can be at substantially right angles to the plane of the passage inlet opening. Baffles in the flow passage and stator vanes adjacent the rotor blades cause the mass flow of the accelerated air to be substantially uniform, and desirably directed, throughout the rotor's blade area. The turbine is compact and operates quietly.

A surface cleaning apparatus is provided wherein a uniflow cyclone comprises a cyclone chamber defined by a longitudinal axis, the cyclone chamber having a dirt outlet that has a variable length in the direction of the longitudinal axis. A cyclone chamber having a barrier wall facing the dirt outlet of the cyclone chamber is also provided.

Provided is an air cleaner capable of enhancing an effect of improving an indoor air environment through enhancing an efficiency of circulating an air current without increasing an air flow volume. The air cleaner (1) is placed on a floor surface (F) and used so as to be located in the vicinity of a side wall surface (W1) of a room and comprises a suction port (122), an air filter (150), a blowout port (131), and an air blower (170). When a distance from a middle position of the blowout port (131) to the side wall surface (W1) of the room is supposed to be L [mm], a distance from the middle position of the blowout port (131) to a ceiling surface of the room is supposed to be H [mm], and the air cleaner (1) is placed and used in a position which allows the distance L to be a value selected from among values in a range of 100<L<600, in order to cause the air sent out from the blowout port (131) to first reach the side wall surface (W1) of the room, an angle θ[°] formed between a direction in which the air is sent out from the blowout port (131) and a vertically upward direction is set to be in a range of tan−1(L / H)<θ≦35.

A cyclone comprises a cyclone chamber having an air inlet, an air outlet, a screen upstream of the air outlet, a longitudinal axis, a first end wall, a second end wall and a sidewall, the air inlet having a cross sectional area in a plane transverse to a direction of airflow through the air inlet and the screen having an inner end spaced longitudinally inwardly from the air outlet and having a cross-sectional area transverse to the cyclone axis that is less than the cross sectional area of the air inlet.

Systems and methods for providing a self deflating cushion whereby a volume of air within the cushion is controllably released to a surface of the cushion thereby providing a cooling effect to the seated anatomy of a user. The cushion further provides a variety of internal, open cell cushioning materials that store and release air during use of the cushion.