688 results about "Channel inlet" patented technology

The present invention is a cosmetic or dermatological preparation for use with a dispenser that includes an auxiliary to keep the dispenser operating smoothly. The auxiliary is selected from the group consisting of (i) polyols having 2 to 6 carbon atoms and 2 to 6 hydroxyl or alkoxy groups and (ii) surfactants that reduce the surface tension of the preparation to less than 30 mN/m. The preparation is particularly suitable with a dispenser comprising a container and an inner container wall for housing a cosmetic or dermatological preparation; a follow-up plunger on a base side of the dispenser, which is capable of being slidably displaced on the inner container wall under the pressure of the ambient atmosphere; a head section on a top end of the dispenser that can be slidably displaced in relation to the container and that comprises a dispensing channel, the dispensing channel capable of being connected in a communicating manner to the container; a manually actuable delivery device comprising a variable-volume delivery chamber, a delivery element that can be displaced longitudinally in relation to the container and the head section, comprising a delivery plunger that can be slidably displaced within the delivery chamber and a delivery stem connected to the delivery plunger, and a delivery channel circumferentially enclosed by the delivery stem and comprising a delivery-channel inlet opening communicating with the delivery chamber and a delivery-channel outlet opening. The delivery channel outlet opening is capable of being moved into an open position relative to the dispensing channel by displacing the delivery element.

A method and apparatus for sequestering CO₂ using algae comprises a plurality of vertically suspended bioreactors, each bioreactor being translucent and including a flow channel formed by a plurality of baffles. A culture tank contains a suspension of water and at least one algae and includes a plurality of gas jets for introducing a CO₂-containing gas into the suspension. The culture tank is in fluid communication with an inlet in each channel for flowing the suspension through the channel in the presence of light. A pump pumps the suspension into the channel inlet.

The invention discloses a carst region double-arch road tunnel construction method, which comprises the following steps; 1. carrying out construction preparation; 2. carrying out construction at channel openings; 3. adopting a three-pilot-tunnel method for constructing the channel inlet opening section, and adopting a step digging method for digging during the three-pilot-tunnel method construction; 4. adopting a middle-pilot-tunnel method for constructing the middle communication section of the channel, and adopting a full cross section method for digging during the middle-pilot-tunnel method construction; 5. adopting the three-pilot-tunnel method or the middle-pilot-tunnel method for constructing the channel outlet opening section, adopting the step digging method for digging when the middle-pilot-tunnel method is adopted for digging construction of the channel outlet opening section, and synchronously carrying out secondary lining construction from the front part to the back part in the digging construction process of the channel inlet opening section, the middle communication section of the channel and the channel outlet opening section. The invention has the advantages of reasonable design, simple and convenient construction, safe and reliable construction process, flexible construction mode, short construction period and greatly simplified construction steps, and effectively overcomes various defects during the traditional carst region double-arch road tunnel construction.

A valve for use in irrigating, accessing and sealing the instrument channel of an endoscope is disclosed. The valve includes a body having a first end, a second end, and an outer circumferential surface. The second end is adapted for connection to an instrument channel inlet port. The outer circumferential surface may define a side entry port. The valve includes a flip cap having an aperture therethrough. The cap is removably insertable into the first end for providing sealable access to the internal passage. The valve may include a tube having an inlet end, an outlet end, and a check valve disposed at the inlet end. The outlet end is fixed to the side entry port. A fluid may be dispensed through the check valve to irrigate the instrument channel. The valve may include a seal curtain member for providing sealable access to the instrument channel.

An improved field-flow fractionation method and apparatus for the separation of sample species 28 contained in a carrier fluid, wherein a stream of the sample species-containing carrier fluid is forced through a flow channel 14 having a depletion wall 18, an accumulation wall 20, side walls, a channel inlet 10, and a channel outlet 34, by introducing the sample species-containing carrier fluid into the flow channel 14 through the channel inlet 10 and withdrawing the sample species-containing carrier fluid through the channel outlet 34, a field 32 is applied to the carrier fluid in the flow channel 14 to induce a driving force on the sample species 28 acting across the flow channel 14 from the depletion wall 18 towards the accumulation wall 20 and perpendicular to the orientation of the main axis of the flow channel 14, the sample species 28 are subjected to fractionation as they flow through the flow channel 14 and emerge as sample species fractions at the channel outlet 34, wherein at least one additional stream of sample species-depleted carrier fluid is introduced into the flow channel 14 through at least one orifice 12 and the relative flow rates of the different streams are adjusted such that the stream of sample species-containing carrier fluid is positioned adjacent to the accumulation wall 20 and the sample species-depleted carrier fluid is positioned between the depletion wall 18 and the sample species-containing carrier fluid, no mechanical barrier being provided inside the flow channel 14 between the orifice 12 and the channel inlet 10 for separating the stream of sample species-depleted carrier fluid introduced through the orifice 12 and the stream of sample species-containing carrier fluid introduced through the channel inlet 10.

A communication terminal includes a housing carrying therein a radio antenna element, a speaker, and a chamber that acts as an electromagnetic resonance cavity for the antenna and as an acoustic resonance cavity for the speaker. The speaker is mounted inside the chamber and is coupled to the outside of the housing through a sound channel. The terminal includes a user interface on a front side of the housing and the speaker is placed behind the user interface as viewed from the front side, with the sound channel extending from a channel inlet at the speaker to a channel front outlet at the front side.

A device (10) for use in a fuel cell includes a fuel-cell flow-field channel (18) having a channel-inlet section (42) and a channel-outlet section (44). At least one of the channel-inlet section (42) or the channel-outlet section (44) includes an obstruction member (46) that partially blocks flow through the fuel-cell flow-field channel (18).

A fluid deflector is for a fluid separator including a central axis and an enclosed wall having an open end and an inner circumferential separation surface extending about the axis to define an interior separation chamber. The fluid deflector includes a base disposeable proximal to the wall open end and having a central axis collinear with the separator axis. A plurality of vanes are connected with the base so as to be spaced circumferentially about the central axis. The vanes define a plurality of flow channels each bounded by a separate pair of adjacent vanes and having an inlet and an outlet. Each vane directs flow through a bounded channel generally radially inwardly from the channel inlet toward the channel outlet and generally circumferentially and radially outwardly from the channel outlet.

A gas turbine engine including an outer case and an exhaust gas passage defined within the outer case for conducting an exhaust gas flow from a turbine section of the gas turbine engine. A cooling channel is associated with an outer surface of the outer case, the cooling channel having a channel inlet and a channel outlet. An air duct structure is provided and includes an inlet end in fluid communication with the channel outlet and includes an outlet end in fluid communication with an area of reduced pressure relative to the air duct structure inlet end. An exit cavity is located at the air duct structure outlet end, wherein the exit cavity effects a reduced pressure at the outlet end to draw air from the cooling channel into the air duct.

A device for suctioning material out of an instrument channel during an endoscopic procedure. The device includes a biopsy valve having a first end, a second end, and an outer circumferential surface. The biopsy valve defines an internal passage leading from the first end to the second end, wherein the first end is adapted for connection to an endoscope instrument channel inlet port. Tubing connects the biopsy valve second end to a suction source connector disposed remote from the biopsy valve. A flow controller is fixed to the tubing and disposed between the biopsy valve second end and the suction source connector. The device may include an irrigation port and an instrument entry port.

The invention relates to the technical field of mechanical equipment oil detection and provides an inductive-reactance type oil detection system. The system comprises a detector, a measurement mode switching unit and an excitation-detection unit. The detector comprises a micro-fluidic chip and a sensing unit, wherein the micro-fluidic chip is composed of a micro-channel inlet, a micro-channel, a substrate, a model material and a micro-channel outlet; and the sensing unit is formed by two single-layer coils facing each other. The measurement mode switching unit switches different measurement modes by changing different connection modes of four lead terminals of the two single-layer coils. By supplying the two single-layer coils with high-frequency AC electric excitation, the excitation-detection unit can be used as an inductance-resistance detector as well as a capacitance detector. According to the chip, by the utilization of the same sensing unit, measurement of multiple parameters such as inductance, resistance and capacitance is realized, various particle pollutants in the oil can be distinguished and detected, and fault diagnosis of machinery equipment can be further carried out.

A cooling device includes a heat sink body having a plurality of elongated channels that extend between respective channel inlets and outlets. A synthetic jet actuator module is adjacent to the heat sink body and includes a plurality of jet outlets adjacent to the respective channel inlets for emitting a plurality of vortices into the channels.

The invention discloses a variable thrust pintle injector. The variable thrust pintle injector comprises a central rod, a shell, a base and an axial moving mechanism. The central rod is provided witha conical head and can be driven by the axial moving mechanism to do axial reciprocating motion. The base comprises a circular truncated cone tail part and a sleeve part, an inner flow channel is formed between the sleeve part and the central rod and comprises an inner flow channel liquid collecting cavity, an inner flow channel contraction section and an inner flow channel flaring section, a shrinking ring is arranged on the inner wall surface of the head of the sleeve part, and a flaring slope is arranged on the inner wall surface of the head of the shrinking ring and intersects with the conical surface of the conical head. An outer flow channel is formed between the sleeve part and the shell, an inner flow channel inlet and an outer flow channel inlet are formed in the circular truncated cone tail part, the inner flow channel inlet is used for introducing liquid oxygen, the outer flow channel inlet is used for introducing methane, and the circular truncated cone tail part is hermetically connected with the tail of the shell. According to the variable thrust pintle injector, the phenomenon of adherent flow can be effectively improved, a pressure cavity is formed, so that the central rod moves up and down, variable flow adjustment is achieved, and the working range of an engine is widened.

A centrifugal compressor with an air-bleed and a jetting box construction belongs to the turbo-machine field. The invention is characterized in that the wall of the box of worm frame is arranged with at least three exhaust-injection guide channels uniformly arranged around the rotary axle of compressor, while it contains exhaust channels and injection channels. The opening of the exhaust channels is arranged at the wall at the inlet of the non-blade expander channel, and vertical to the wall of inlet box. The opening of the injection channel is at the most torsion of the channel formed by the worm frame and blade, while it is at same direction of main absolute speed of most torsion. The exhaust channel and the injection channel are connected via the guide channel. The inventive exhaust-injection guide channel can exhaust the adhere layer at the wall of expander, restrain the flow separation of expander, and fill high-energy injection into the channel of blade wheel, to restrain the flow separation of adsorption face and restrain the flow separation at small flux, to improve the speed-lost allowance and efficiency.

The invention aims at providing a device for testing the jet flow drag reduction effect of a two-dimensional plane. The device comprises a water tank, a water pump and a test section, wherein the test section comprises a two-dimensional channel, a two-dimensional channel inlet is arranged at one end of the two-dimensional channel, a two-dimensional channel outlet is arranged at the other end of the two-dimensional channel, the two-dimensional channel inlet is in a gradually reducing shape, the two-dimensional channel outlet is in a gradually expanding shape, a grid type rectifying section is arranged between the two-dimensional channel inlet and the two-dimensional channel, the water pump is communicated with the water tank, the water pump is communicated with the two-dimensional channel inlet through an inlet pipeline, the two-dimensional channel outlet is communicated with the water tank through an outlet pipeline, a speed regulator valve, an electromagnetic flow meter and a pressure meter are arranged on the inlet pipeline, the inlet pipeline is also communicated with a backflow pipeline on which an overflow valve is arranged, and the backflow pipeline is communicated with the water tank. The device has the advantages of low cost, compact structure, small size, convenience in daily maintenance and low noise. The device can be used for testing the drag reduction effect of jet flow surfaces and non-smooth surfaces and can also be used for conventional fluid dynamic tests.

A dual-fluid nozzle atomizing experiment device adapted to various atomizing media comprises a compressed air system, a water vapor system, a mixing system, a material liquid system and a circuit and control system for adjusting all control mechanisms. Ejection medium flow output by a compressed air and water vapor mixing system and material liquid output by the material liquid system are connected into an air channel inlet and a liquid channel inlet of a dual-fluid nozzle through pipes respectively. According to the atomizing experiment device, compressed air and water vapor mixed in any proportion can be selected as ejection media to be adapted to different types of dual-fluid nozzles. Multiple parameters of temperature, pressure and flow of the ejection media and the material liquid are adjusted respectively, the adjustment range is wide, and the spray quality and the material liquid applying proportion can be effectively controlled; the device is adapted to various atomizing media and experiment parameters, an experiment platform is provided for detecting and evaluating the atomizing effect for enterprises, and the purposes that technological parameters of the ejection media and the material liquid are controlled effectively, the spraying performance and stability are improved, and the flavoring and charging technological quality of tobacco is improved are achieved.

The invention discloses a cell capturing chip based on inductive charge electro-osmosis induced by a rotating electric field, and relates to a micro-fluidic chip based on inductive charge electro-osmosis induced by the rotating electric field. The invention aims to solve the problem that a dielectrophoresis capturing method is not suitable for capturing small cell and joule heat is easily generated in capturing the cell. A PDMS (polydimethylsiloxane) cover plate is fixed on a glass substrate, and two PDMS channels perpendicular to each other are arranged on the PDMS cover plate; both ends of two PDMS channels are respectively provided with a main channel inlet, a main channel outlet, a secondary channel inlet and a secondary channel outlet; a suspension electrode array is placed at an intersection of the PDMS; an inner end part of a first exciting electrode, an inner end part of a second exciting electrode, an inner end part of a third exciting electrode and an inner end part of a fourth exciting electrode are respectively located at four different directions of the suspension electrode array. The invention has the beneficial effects that the cell capturing chip is small in captured cell size, high in capturing efficiency, and is not easy to generate joule heat. The cell capturing chip based on the vortex of the flow field is applicable to capture cells with different sizes.

The invention discloses an impurity-removing carding device for a rotor spinning machine. The device comprises a shell and a carding roller, the shell is provided with a fiber transporting channel, a feeding channel and an impurity removing channel, the impurity removing channel comprises an impurity inlet and an impurity outlet, the impurity removing channel is internally provided with a spreader plate making the impurity removing channel divided into an air current channel and an impurity air current channel, on end of the spreader plate is located at the impurity inlet, the impurity inlet is divided into an air current channel outlet and an impurity air current channel inlet, the other end of the spreader plate is located at the impurity outlet, and the impurity outlet is divided into an air current channel inlet and an impurity air current channel outlet; card clothing is laid on the surface of the spreader plate, and the card clothing comprises sharp teeth arranged in the direction facing the impurity outlet. The size of the air flow channel is adjusted, so that the size of an air current is controlled, and the phenomenon that impurities low in density are brought back into a carding cavity by an air replenishment air current is prevented; in this way, the carding effect is improved, and the phenomenon that the quality of yarn spun through the next few steps is lowered is prevented.

Lab-on-a-chip microfluidic devices having micro-channels able to withstand an internal channel pressure of more than 4,000 psi are described. The micro-channels have rounded cross-sections that prevent turbulent flow within a fluid conveyed within the channel. The channel may have serpentine-shaped length extending between a channel inlet and a channel outlet, the channel thereby being of sufficient length to observe both the stationary and moving phases of the fluid in a chip having a sufficiently small footprint that it is suitable for incorporation into a miniaturized spectrometer. Methods of fabricating lab-on-a-chip microfluidic devices are described by etching recesses in chip substrates such that a first substrate recess mirrors a second substrate recess in an opposed orientation, aligning the substrates such the recesses cooperatively define a micro-channel having a rounded cross-section, and bonding the substrates to define a smooth-walled micro-channel.