162 results about "Airflow" patented technology

The present invention relates to methods for hindering formation of tobacco-specific nitrosamines during processing of dark fire tobacco, as well as a facility in which at least portions of these methods may be conducted. According to the present invention, dark fire tobacco that has been harvested and that is generally green and/or yellow is exposed to an uncontrolled, yet active, ambient airflow so as to provide a substantially aerobic environment about the tobacco. This exposure of the dark fire tobacco to the ambient airflow may be done until the tobacco is substantially brown and/or substantially free of enzymatic activity. Subsequently, the tobacco is exposed to gaseous emissions (e.g., smoke) from combusting sawdust/wood. This step may be conducted at least until the tobacco exhibits a moisture content of no more than about 16% and/or until the tobacco exhibits a gloss or shine on a surface of the tobacco.

A dirt collecting system for a vacuum cleaner includes a dirt cup formed from a cylindrical sidewall having a disc shaped member separating the dirt cup into an upper portion and a lower portion. The dirty airstream flows past the disc shaped member from the upper portion to the lower portion through a small gap between the outer periphery of the disc shaped member and the sidewall of the dirt cup. The disc shaped member is supported on a centrally located conduit which has apertured walls located both above and below the disc shaped member. The apertured walls allows the airstream to flow into the conduit for further filtering or exiting the dirt cup. The apertured wall located above the disc shaped member improves sustained performance by enabling the airstream to continue to flow through the dirt cup as the lower portion of the dirt cup fills with large dirt particles and the apertured wall located beneath the disc shaped member becomes increasingly restricted. In the various embodiments of the invention, the airstream is directed through the conduit to a fine particle filter located in a compartment at the bottom of the dirt cup, at the top of the dirt cup or into filter sock located at the upper end of the dirt cup. Alternately, the fine particle filter may be located in a separate container located above or below the dirt container.

A pressure-assisted breathing system is provided that comprises: a pressure-generating circuit for maintaining a positive pressure within the system; a patient interface device coupled to a patient's respiratory system; a respiratory circuit for providing gas communication between the pressure-generating circuit and the patient interface device; means for introducing aerosol particles into the gas flow in the respiratory circuit; and means for discontinuing the introduction of aerosol particles into said respiratory circuit gas flow when the patient exhales. In one embodiment, a flow sensor is disposed in an auxiliary circuit in fluid communication with the respiratory circuit and electronically coupled with a nebulizer. The flow sensor is adapted to detect changes in the volumetric flow rate of gas in the auxiliary circuit when the patient exhales and stops exhaling and sends corresponding electronic signals to the nebulizer to turn off and turn on, respectively.

An engine controller determines the cost of operating a combustion engine and the cost of operating an emissions after-treatment device. Accordingly, the engine controller adjusts parameters for operation of the engine and the after-treatment device to ensure cost-effective use of the engine and the after-treatment device while complying with exhaust emissions requirements. In particular, the engine controller receives the price of fuel consumed by the engine and the price of reductant used by the after-treatment device to determine the respective cost of operation. Specifically, the fuel is diesel fuel used in a diesel engine; the reductant is urea use in a urea-based Selective Catalytic Reduction (SCR) system; and the regulated exhaust emissions is nitrogen oxide (NOx) emissions. The engine operating parameters may include cooled exhaust gas recirculation airflow, fuel injection timing, fuel injection pressure, and air-to-fuel ratio. The SCR system operating parameters may include the volume of urea injected.

An apparatus converts rotary motion of a motor drive shaft into oscillatory motion of a work piece, for example, in a power tool. The apparatus comprises a planetary gear assembly connected to the motor for rotating an output gear. The output gear meshes with a drive gear including a drive pin. The drive pin fits in a yoke slot for reciprocation of the yoke upon rotation of the drive gear. The yoke is operatively connected to the work piece. An air flow system cools the power tool housing. The housing has an inlet aperture in the handle portion and an outlet aperture for placing the interior of the housing in communication with the atmosphere. A wall integral with the handle portion engages the body of the motor housing between a first end and openings in the body. The wall provides a barrier to minimize air flow between an intake air portion of the interior of the housing and an exhaust air portion. A fan on the motor drive shaft induces air flow from the intake air portion and exhaust air portion of the interior chamber into the motor housing through openings in the end walls. Air is discharged from the openings in the body.

A noise-reducing attachment apparatus for a heat exchanger door is provided for facilitating attenuation of noise emanating from an electronics rack. The apparatus includes a frame structure configured to coupled to the heat exchanger door. The door includes in air opening and air-to-liquid heat exchanger, and air passing through the air opening also passes across the heat exchanger. The air opening facilitates passage of external air through the electronics rack. The frame structure defines in part an airflow channel through the apparatus, wherein air passing through the air opening also passes through the airflow channel when the apparatus is operatively coupled to the door. An acoustically absorptive material, which is coupled to the frame structure and at least partially defines the airflow opening through the apparatus, is selected and positioned to attenuate noise emanating from the electronics rack when the apparatus is coupled to the heat exchanger door.

A system and method for a plasma system includes a plasma torch actuated by a trigger, a consumable installed in the plasma torch, and a gas flow system constructed to receive pressurized gas and provide a gas flow to the plasma torch. A gas flow regulating system is included and configured to regulate the gas flow, and a sensing device is included and configured to monitor a gas pressure in the plasma torch. The plasma system also includes a controller configured to receive a signal from the sensing device and to determine one of a length parameter of the plasma torch and a type of the consumable therefrom.

The invention relates to a method for producing ceramic layers by spraying. A cold gas spraying method is used to produce polymer ceramics from pre-ceramic polymers. According to said method, a cold gas stream, to which particles of the pre-ceramic polymers are added via a conduit, is generated by a spray gun. The energy for creating a layer on a substrate is produced by injecting a powerful kinetic energy into the cold gas stream, thus preventing or significantly restricting the thermal heating of the cold gas stream. This permits the heat-sensitive pre-ceramic polymers to be spray-applied as a coating on a substrate using a cold gas spraying method. Polymer ceramics can thus be used in an economic method for the rapid production of layers with a relatively large thickness. The invention allows for example armoured layers, thermal protection layers and other functional layers to be produced.

A water-cooled condenser that exchanges heat between refrigerant of an air conditioner for a vehicle and coolant, and then send the refrigerant out to a air-cooled condenser through a refrigerant outlet port. The refrigerant outlet port is connected with the air-cooled condenser at a position that doesn't overlap a bumper reinforcement arranged in front of the air-cooled condenser at a front section of the vehicle when viewed along an airflow direction toward the air-cooled condenser. In the water-cooled condenser, the refrigerant that flows into the air-cooled condenser through the refrigerant outlet port flows much at a position that doesn't overlap the bumper reinforcement, so that superior heat radiation performance can be brought by a sufficient cooling airflow volume. Therefore, total heat radiation performance achieved by the air-cooled condenser and the water-cooled condenser can be improved.

An apparatus for cooling tissues which are treated with an energy-based device, such as a laser, is disclosed. The apparatus comprises a spray nozzle which generates an atomized liquid spray for the treatment area, wherein the atomized liquid spray is based on a mixture of liquid and gas. Further, the spray nozzle comprises at least one liquid outlet which ejects a liquid, and at least one gas outlet which ejects a gas stream. Besides, the apparatus for cooling comprises at least one delivery means for delivering pressurized gas to the spray nozzle; and a pumping means for the liquid, wherein the pumping means is configured to operate in pulses.

The invention belongs to the field of vibrating screens, and in particular relates to a self-excited vibrating screen screen cleaning device. A support and guide mechanism is installed on the screen body and above the screen. The bottom end surface of the screen is in contact with the top surface of the screen. The screen is set on the screen body. The screen body and the screen are both inclined. It is connected with the transmission mechanism and the cleaning mechanism through lines. Beneficial effects of the present invention: the cleaning drum is used in conjunction with the airflow cleaning device, and the reciprocating movement of the cleaning drum along the screen can make the cleaning space of the cleaning drum cover the entire screen, so that the materials accumulated and blocked on the screen can be cleaned by the cleaning drum and the cleaning brush. During the vibration and impact of the cleaning teeth, they are continuously shaken off and leave the screen, and then the screen is cleaned twice by the airflow cleaning device, with fast cleaning speed and good cleaning effect.

Urine collection apparatus is provided which can be used to assist bedridden and/or incontinent patients, particularly female patients. The apparatus includes a urine collector which is shaped for location against the perineal region of a patient adjacent the urethra. The urine collector comprises a hollow body having opposed ends in which an inlet for air and an outlet for air and urine are formed, respectively. The body has a central region between the end regions with a reduced cross-sectional area. This effectively creates a venturi adjacent the patient's urethra when air passes through the collector. The apparatus includes a urine receptacle with an inlet for receiving air and urine from the collector, and an outlet for air which is connectable to a source of low pressure. The source of low pressure will typically be an impeller driven by an electric motor, which creates a sufficiently strong air flow through the apparatus to entrain urine and transport it to the receptacle.

A grille member that can be used, for example, in a cyclone dust-collecting apparatus and a vacuum cleaner comprises a body around which a rotating current is formed, and a plurality of air passages formed at the body to guide the rotating current into the body. In an embodiment, the air passages have a leading surface facing toward a flow direction of the rotating air current and a tail surface upstream from the leading surface relative to the rotating air current, such that at least one plane extending along the tail surface and a line along the flow direction of the rotating air current meet at an obtuse angle. In this way, stagnant vortices are not generated in the vicinity of the tail surfaces of the air passages, and dust and the like do not accumulate in the vicinity of the tail surfaces of the air passages when dirt is centrifugally separated from drawn-in air by the rotating current.

The invention provides an unsteady impact wave generation method for numerical simulation. The unsteady impact wave generation method for the numerical simulation comprises the following steps. Step 1, one boundary of a numerical simulation flow field is chosen to be an impact wave boundary; step 2, a coordinate x s and an impact wave angle beta of a point of incidence of the impact wave are set on the impact wave boundary; step 3, a parameter condition, namely, the parameter condition of a known impact wave front airflow, of a front boundary of the impact wave is set; step 4, a parameter condition of a rear boundary of the impact wave is determined according to an impact wave relation; and step 5, an unsteady impact wave is generated in the numerical simulation. According to the unsteady impact wave generation method for the numerical simulation, the unsteady impact wave easy to control is generated and the method is simple and easy.

The invention discloses a test cabin for extreme high and low-temperature environments. The test cabin comprises a container type box, a fuel oil heater, an electric control cabinet, an air channel system, a refrigerating unit, a cold and hot air circulating system and a control system, wherein the box is partitioned into an operation chamber, a compartment and a test chamber; the electric control cabinet and the fuel oil heater are arranged in the operation chamber; an evaporator of the refrigerating unit is arranged in the compartment; a unit to be tested is arranged in the test chamber; the upper parts of the front and back side faces of the test chamber are provided with a test chamber air inlet respectively; the front side face of the test chamber is provided with a test chamber shutter; the air channel system comprises two air suction channels, two hot air channels and an internal chamber air channel; one end of each air suction channel is connected with the air inlet of the air suction channel, and the other end of each air suction channel is connected with the air inlet of the fuel oil heater; the air inlets of the two hot air channels are connected with the hot air outlet of the fuel oil heater; the hot air channel passes through the compartment and is communicated with the test chamber; and one end of the internal chamber air channel is connected with the air inlet of the internal chamber air channel, and the other end of the internal chamber air channel is positioned in the test chamber, so that air stream in the compartment is communicated with air stream of the test chamber.

A leading edge structure for use in an aerospace vehicle includes a body having a flowpath surface which defines a leading edge adapted to face an air flow during operation, and an opposed inner surface. The body is segmented into a plurality of portions having varying thermal properties and/or mechanical discontinuities, so as to promote stress concentrations in ice attached to the flowpath surface.

A ventilator device for a freight container configured to prevent the ingress of water into the cargo tank interior. The ventilator device comprises a floatation-based valve configured to shuttle backwards and forwards in response to contact with water. The valve acts to open and close the air flow passageway through the device and is mounted over the air flow vents of the container. A manual override actuator may be provided to manually open and close the valves.

The present invention relates to a spinning apparatus (5) for producing a thread (36) by means of a circulating air flow, wherein the spinning apparatus (5) has a hollow spinning cone (19) which is arranged in a spinning housing (14, 15) and, in order to generate the circulating air flow, a nozzle block (17) which can be loaded with compressed air, wherein the spinning housing (14, 15) has an expansion chamber (28) which is provided with at least one waste air channel (29), wherein a compressed air source (22) can be connected to the waste air channel (29) for the joining operation, while the nozzle block can be separated from the compressed air supply, as a result of which an air flow which runs along the spinning cone (19) in the direction of the sliver guide (18) is generated in the spinning housing (14, 15), with the result that a suction effect is produced at the inlet opening (35) of the spinning cone (19), by way of which suction effect a thread (36) can be transported through the spinning cone (19) counter to the spinning direction.

The present invention relates to one kind of new drying and crushing technique, in which high temperature air flow is used to impact material to disperse the material highly and to evaporate its water instantaneously, or, to make the material hydrolyze and condensate instantaneously to form highly dispersed dry fine particles. The technique may be used in dispersing inorganic pigment, inorganic stuffing and nanometer material.

The invention relates to an air outlet structure for air conditioner equipment, a control method and the air conditioner equipment. The air outlet structure for the air conditioner equipment comprises a shell, a centrifugal air suction part and an adjusting part; the shell is provided with an air outlet (8); the centrifugal air suction part is arranged in an air duct of the air conditioner equipment and used for leading airflow in the air duct to the air outlet (8) in the shell to achieve air outflow in the circumferential direction; and the adjusting part is arranged in the air outlet (8) and can adjust the angle of an air flow channel in the manner that the adjusting part moves relative to the air outlet (8), and therefore the air outflow direction can be changed. The air outlet structure for the air conditioner equipment can adopt air supply manners at different angles according to different requirements, so that the comfort degree feeling of a user can be improved as much as possible, or the regional selection requirement of the user for refrigerating and heating can be met.