3089 results about "Gas mixing" patented technology

Pressure swing adsorption (PSA) separation of a feed gas mixture is performed within an apparatus having typically a single prime mover powering a feed compressor for one or multiple rotary PSA modules in parallel, each module including a rotor with a large number of angularly spaced adsorber elements, with valve surfaces between the rotor and a stator so that individual adsorber elements are opened to compartments for staged pressurization and blowdown, with thermally boosted energy recovery from staged expansion of countercurrent blowdown and light reflux gases, and a plurality of adsorber elements opened at any instant to each compartment so that each compressor and expander stage operates under substantially steady conditions of flow and pressure.

A method for the separation of a feed gas mixture comprising oxygen and nitrogen in which an oxidant gas and fuel are combusted in a combustion engine to generate shaft work and a hot exhaust gas, the feed gas mixture comprising oxygen and nitrogen is compressed, and the resulting compressed feed gas mixture is separated into two or more product gas streams with differing compositions. The shaft work of the combustion engine is utilized to provide at least a portion of the work required for compressing the feed gas mixture, one of the product gas streams by is heated by indirect heat exchange with the hot exhaust gas from the combustion engine, and the resulting heated product gas is work expanded to generate shaft work and yield an expanded product gas stream. The combustion engine may be a gas turbine combustion engine.

The overall efficiency of a regenerative bed reverse flow reactor system is increased where the location of the exothermic reaction used for regeneration is suitably controlled. The present invention provides a method and apparatus for controlling the combustion to improve the thermal efficiency of bed regeneration in a cyclic reaction/regeneration processes. The process for thermal regeneration of a regenerative reactor bed entails

• • (a) supplying the first reactant through a first channel means in a first regenerative bed and supplying at least a second reactant through a second channel means in the first regenerative bed,
  • (b) combining said first and second reactants by a gas mixing means situated at an exit of the first regenerative bed and reacting the combined gas to produce a heated reaction product,
  • (c) passing the heated reaction product through a second regenerative bed thereby transferring heat from the reaction product to the second regenerative bed.

Minimal concentrations of CO2 are mixed with pressurized air to provide a gas mix effective for stabilizing breathing of target patients or users. CO2 concentrations below about 2% and preferably between about 0.5% and 1.25% are employed. A gas modulator includes a gas mixing module, a sensor and a control processor. The gas mixing module mixes plural gases, including CO2, into a gas mix, for delivery to a substantially leak-proof patient face mask. The sensor, located substantially at the face mask, measures CO2 concentration in the face mask. The control processor, based on a signal from the sensor, controls the CO2 concentration in the gas mix.

The present invention pertains to methods for removing unwanted material from a work piece. More specifically, the invention pertains to stripping photo-resist material and removing etch-related residues from a semiconductor wafer during semiconductor manufacturing. Methods involve implementing a hydrogen plasma operation with downstream mixing with an inert gas. The invention is effective at stripping photo-resist and removing residues from low-k dielectric material used in Damascene devices.

An internal dry powder delivery system through a working channel of an endoscopic cannula for directly applying the powder form medication to an internal tissue/organ site, includes an elongated tubular delivery channel and a powder supply device for producing pressurized gas mixing with the dry powder for feeding to form a mixture of dry powder and pressurized gas delivering to an internal tissue/organ site through the delivery channel via endoscopic cannula. It ensures a smooth powder release by preventing liquid from accumulation at the tip of the delivery channel and offers physicians a new powder form drug delivery method via endoscope. Also, it offers new minimal invasive application by directly and precisely applying the powder format drug to the internal sites of human gastrointestinal organ via endoscope to achieve hemostasis, anti-inflammation, anti-ulcer and anti-tumor treatment, etc.

A ventilator includes first and second pathways, a conduit and a controller. The first pathway (120) is configured to supply a first gas and the second pathway (140) is configured to supply a second gas, where the second gas is mixed with the first gas to produce mixed gas having a predetermined percentage of the second gas. The conduit (166) is configured to provide the mixed gas from the first and second pathways to an access port during an inspiratory phase, and to provide discharged gas from the access port to the first pathway during an expiratory phase. The controller (180) is configured to delay supply of the second gas from the second pathway for a delay time in order to maintain the predetermined percentage of the second gas in the mixed gas provided to the access port during a subsequent inspiratory phase.

A gas burner generates electricity with waste heat energy. At least one thermoelectric unit is installed underneath the burner cap of the gas burner. Gas flame at the edge of the burner cap creates heat sources (hot side) for the thermoelectric unit. A gas-mixing chamber underneath the thermoelectric unit functions as heat sinks (cold side) for the thermoelectric unit. An insulation plate is inserted in between the thermoelectric unit and the burner cap to control the hot side temperature. The thermoelectric unit generates electricity while the gas burner is in use and the flame heats up the burner cap. The thermoelectric unit connects to an electric circuit and provides electricity to power devices such as electric fans, lights, TVs, battery chargers etc.

The invention relates to a controlling method of fuel-air mixture electronic control unit (ECU) of engine. In the controlling method, through acquisition of air inlet temperature and pressure, water temperature, engine rotational speed, throttle position and oxygen sensor signal, the ECU accurately controls the oil (gas) spraying quantity and ignition angle; the oil (gas) spraying adopts multipoint grouping or multipoint sequential technique, and the ECU calculates the actual oil (gas) spraying quantity and actual oil (gas) spraying time with one same algorithm and two sets of rating data in the same hardware platform; the ECU performs closed-loop control to air fuel ratio; the oil (gas) spraying is controlled based on the torque of an electronic air throttle, and ECU acquires the air throttle pedal position signal and calculates the maximal torque at that time to control the opening extent of the air throttle. The controlling method can remarkably improve the performance of engine, obtain the optimal air fuel ratio under various operating conditions, and make the automobile to achieve the optimal dynamic force.

Embodiments of the present invention generally relate to the fabrication of integrated circuits and particularly to the deposition of a boron containing amorphous carbon layer on a semiconductor substrate. In one embodiment, a method of processing a substrate in a processing chamber is provided. The method comprises providing a substrate in a processing volume, flowing a hydrocarbon containing gas mixture into the processing volume, generating a plasma of the hydrocarbon containing gas mixture by applying power from an RF source, flowing a boron containing gas mixture into the processing volume, and depositing a boron containing amorphous carbon film on the substrate in the presence of the plasma, wherein the boron containing amorphous carbon film contains from about 30 to about 60 atomic percentage of boron.

The present invention discloses an icing wind tunnel hot gas anti-icing test high-precision simulation method and device. The device comprises a gas source, a pressure reduction device, a filter, an air heater, a multistage electric heating device and a test section in order from a gas input direction to a gas output direction. The gas path behind the pressure reduction device is divided into two paths, one path is heated and then is subjected to flow mixing with the other unheated path, a pneumatic switching valve in an icing wind tunnel plenum chamber is configured to divide the gas path into two paths, gas of one path enters a test section and flows out after passing through a test model to perform flow measurement, gas of the other path is flown through from the external portion of the test section and performs flow measurement, and gas of a model main path and gas of a simulation bypass path are combined into one path after passing through the wind tunnel test section and are exhausted through a flowmeter and a silencer; a cold and hot gas mixing mode is employed to rapidly reduce the high-pressure hot gas behind the air heater so as to reach the effect of rapid temperature adjustment; and the multistage electric heating device is employed to perform high-precision temperature regulation and control so as to perform high-precision temperature adjustment of high-pressure hot gas prior to the high-pressure hot gas entering a test model step by step.

The invention discloses a burner cap of a household gas stove. The burner cap of the household gas stove comprises a burner cap body and an upper cover arranged at the top of the burner cap body. The burner cap is characterized in that the burner cap body is provided with an inner ring wall and an outer ring wall, a center through hole is formed in the center of the inner ring wall, an annular channel is formed between the inner ring wall and the outer ring wall, a through hole is formed in the bottom of the annular channel, and the upper cover is of a sheet structure densely provided with meshes. The invention further discloses a combustor provided with the burner cap of the household gas stove, the burner cap is arranged on a gas mixing chamber, the center through hole is communicated with an inner ring gas mixing cavity, and the through hole in the bottom of the annular channel is communicated with a middle ring gas mixing cavity. The burner cap of the household gas stove has the advantages that by the adoption of the burner cap, a middle ring needs little secondary air, an inner ring achieves fully premixed atmospheric combustion, the temperature of burning flame reaches about 1000 DEG C, the flame is directly injected, combustion is centralized, the secondary air takes little heat away, and therefore the heat efficiency is good; on the premise of ensuring the heat efficiency, little secondary air is needed, and the diameter of the combustor can be small relatively.

The invention relates to a method for conversion of C10+ heavy aromatics into light aromatics by virtue of hydrogenation. The method is characterized by comprising the following steps: preheating heavy aromatics raw material through a heating furnace, performing oil-gas mixing on the preheated heavy aromatics raw material and hydrogen, respectively performing pre-hydrogenation saturation and hydrocracking reaction through two reactors in series connection in order; isolating benzene, toluene and light alkane mixture from reaction product through one-step rectification, isolating C8-C9 aromatics crude product or light fraction before 205 DEG.C for high-octane petrol blending component from tower bottom material through rectification, and circularly reacting tower bottom heavy fraction. The method can be used for processing byproduct C10+ heavy aromatics of a reformer or a steam cracking device in a refinery plant, and increasing the production of light aromatics or high-octane petrol blending component. The method provided by the method has the features of high heavy aromatics conversion activity, good catalyst stability and flexible product on the process.

The invention relates to a device and method for the atomisation or nebulisation of a liquid using a propellant vapour or gas (referred to hereafter as gas) which is introduced into the device under pressure. According to the invention, the two fluids are mixed together and subsequently released to the exterior, such that the liquid is released in the form of an aerosol or a suspension of drops that is conveyed by the gas stream. The inventive device comprises a liquid storage chamber which is housed in a pressurised cylinder or container and a liquid/gas mixing area whereat the aforementioned two phases are combined and released to the exterior.

A gas blender with auxiliary mixed gas outlet for mixing a primary gas, generally air, and a secondary gas, generally oxygen, to obtain a mixed gas having several controlled characteristics. The gas blender may be incorporated into a Continuous Positive Airway Pressure (CPAP) device. The gas blender controls the mixing to produce the mixed gas having a predetermined mixture setpoint, generally an oxygen percentage, and a predetermined control setpoint, generally a pressure setpoint or flow rate setpoint. The gas blender provides an auxiliary mixed gas source for use by an auxiliary piece of equipment such as a nebulizer or resuscitation bag. The gas blender includes a primary gas inlet passageway, a secondary gas inlet passageway, a gas mixing apparatus, a mixed gas distribution passageway with an auxiliary mixed gas outlet, a gas sensor, a delivery sensor, a mixed gas delivery control valve, a mixed gas controlled passageway, and a controller.

The invention provides an anaesthetizing system and a gas mixing method in the anaesthetizing system. The anaesthetizing system comprises a primary outlet and a secondary output, wherein the primary output and the secondary output work independent from each other; the primary output can be used for outputting first mixed gases and an anesthesia medium to a patient; and the secondary output can be used for outputting second mixed gases to the patient. A user can selectively mix oxygen and at least one other gas; thus, the second mixed gases provided to the secondary output have a desired flow rate and desired oxygen ratio. The second mixed gases passing through the secondary output are prevented from flowing into the anaesthetizing system again; thus, the possibility of polluting gases of the primary output can be reduced or eliminated.

A radiant gas burner is provided having a casing adapted for connection with an air-gas mixing and supply system including a flux dissector and a mixer. The burner further includes a metallic mesh emitter inside the casing having lower and upper meshes. The lower mesh and the upper mesh each have porous openings. Each of the lower and upper meshes having a radius of curvature wherein the lower mesh is spaced apart from the upper mesh.

A combustion-engined setting tool for driving fastening elements in a constructional component includes at least one combustion chamber (11) for receiving an oxidant-fuel gas mixture, a piston guide (17) located adjacent to the combustion chamber (11), and in which a drive piston (15) for driving the fastening elements in is displaceable by combustion gases, a ventilator for creating turbulence in the combustion chamber (11), and a compression device (30) for compressing gases fed into the combustion chamber (11) and driven by the ventilator drive (21).

A method of oral treatment comprises passing a flow of a gas mixture from a pressure vessel containing the gas mixture through a generator of non-thermal plasma; applying a partially ionising electrical potential to the flow of the gas mixture in the plasma generator, and thereby forming a non-thermal gaseous plasma in the gas mixture, and causing the flow of the gas mixture downstream of the plasma generator to perform the oral treatment. The gas mixture comprises (a) a noble gas selected from helium and argon and mixtures thereof, and (b) an additive gas selected from water vapour, air, oxygen, nitrogen, hydrogen, carbon monoxide, carbon dioxide, nitrous oxide and nitric oxide and mixtures of any two or more thereof. The additive gas forms up to 1% by volume of the gas mixture. The oral treatment may be the cosmetic whitening of teeth, the non-clinical cleaning of teeth or the in situ cleaning of orthodontic braces, amongst others.