1198results about How to "Easy to ignite" patented technology

A method for forming an oxide film by plasma-assisted cyclic processing, includes: (i) supplying a precursor to a reaction space wherein a substrate is placed; (ii) applying a first RF power to the reaction space for a first period of time without supplying a precursor; and (iii) applying a second RF power to the reaction space for a second period of time without supplying the precursor, wherein the first RF power is lower than the second RF power, and/or the first period of time is shorter than the second period of time.

A combustor method and apparatus is provided. The method utilizes flameless combustion with one or more of three improvements to enhance ignition of the flameless combustor. A catalytic surface can be provided within a combustion chamber to provide flameless combustion at least in the vicinity of the catalytic surface at a temperature that is much lower than the autoignition temperature of fuel in air without the presence of the catalytic surface. Nitrous oxide or supplemental oxygen may also be used as an oxidant either instead of air or with air to reduce ignition temperatures. Further, electrical energy can be passed through the fuel conduit, raising the temperature of the conduit to a temperature above which the fuel will ignite when combined with the oxidant.

Methods and apparatus for controlling a plasma used for materials processing feature cooperative action of a resonant circuit and a switch unit coupled to a plasma vessel and a power supply. A sensor for acquiring a signal associated with a state of a plasma in the plasma vessel supports closed-loop control of the switch unit. Undesirable plasma states detected by the sensor can be eliminated by closing the switch unit to shunt the resonant circuit.

High nitrogen nonazide gas compositions, useful in inflating passenger restraint gas inflator bags, comprise a nonmetal salt of triazole or tetrazole fuel, phase stabilized ammonium nitrate (PSAN) as a primary oxidizer, a metallic second oxidizer, and an inert component such as clay or mica. The combination of these constituents results in gas generants that are relatively more stable and less explosive, have improved ignitability and satisfactory burn rates, have sustained combustion throughout the various combustion pressures at the inflator level, and generate more gas and less solids than known gas generant compositions.

Device for depositing a coating on an internal surface of a container (10), of the type in which the deposition is carried out by means of a low-pressure plasma created inside the container (10) by excitation of a precursor gas by microwave-type electromagnetic waves. An injection tube (13) is provided that dips into the container (10) to a length of between one quarter and one half of the total height of the container (10) in question, between the top (18) and the bottom (17) of the container (10), said length of the injection tube (13) constituting a longitudinal antenna (16) capable of picking up a UHF electromagnetic wave generated by said generator (3) and of propagating the HT ignition signal, a UHF short-circuit (19) in the form of a plate (21, 23, 25) being provided on the injection tube (13) in such a way that the face of said plate (21, 23, 25) on the cavity side defines a point of zero amplitude of the electromagnetic wave propagating along said injection tube (13), the length between said short-circuit (19) and the free end (13a) of said injection tube (13) corresponding to an odd number of quarter-wavelengths so as to obtain a maximum amplitude, that is to say an antinode, at the free end (13a) of the injection tube (13).

The invention discloses a gas grill with multiple enhancements to allow for easy grilling of foods, subsequent clean-up, and replacement of parts. In lieu of a top-opening lid, the apparatus provides a plurality of removable and insertable drawers, comprising a plurality of burner units, a plurality of grill trays, and a drip tray located in a vertical configuration therein a base unit. All drawers are interchangeable as desired. A storage compartment is located on the bottom directly below the drip tray and an exhaust assembly is located on the top for directing smoke away from the apparatus. The invention is adaptable to propane or natural gas. Additional drawers and burner assemblies are provided and may be used for charcoal or wood burning, bun or food warming, and water steaming. All drawers are easily removable on slides with a safety catch system for easy care and cleaning.

Preheating of fuel and injection into a plasma torch plume fro adjacent the plasma torch plume provides for only ignition with reduced delay but improved fuel-air mixing and fuel atomization as well as combustion reaction enhancement. Heat exchange also reduced erosion of the anode of the plasma torch. Fuel mixing atomization, fuel mixture distribution enhancement and combustion reaction enhancement are improved by unsteady plasma torch energization, integral formation of the heat exchanger, fuel injection nozzle and plasma torch anode in a more compact, low-profile arrangement which is not intrusive on a highspeed air flow with which the invention is particularly effective and further enhanced by use of nitrogen as a feedstock material and inclusion of high pressure gases in the fuel to cause effervescence during injection.

A firearm cartridge has a case configured with a relatively straight-walled portion and a shoulder portion for housing a quantity of propellant. The case further includes a neck for retaining a bullet. The straight-walled portion defines a base cavity having an interior base diameter. The interior base diameter is approximately twice or more the neck diameter. The diameter ratios of the base and neck optimize combustion efficiency to reduce heat and acceleration losses. The cartridge body cavity is sized and configured to contain a sufficient quantity of propellant such that igniting the propellant causes formation of a propellant plug having a diameter that is approximately the diameter of the bullet, and wherein the propellant plug shears free from unburned propellant that is disposed adjacent the relatively straight-walled body portion.

A ceramic-encased hot surface igniter system for jet engines is presented. The advanced ceramic-encased hot surface igniter system comprises at least one electrical resistance heated element encased in a durable, thermal and mechanical shock resistant, high temperature advanced ceramic compound such as silicon nitride. The one or more advanced ceramic-encased hot surface igniter elements are mounted proximally upstream or within a combustion chamber of a jet engine enclosure or within the afterburner section of a jet propulsion engine's exhaust. The surface temperature of each ignition element's encasement being of sufficient temperature to cause the ignition of a gaseous, atomized, or liquid fuel.

A small gas turbine engine for use in an UAV such as a cruise missile, the gas turbine having a combustor forming a primary burn zone and a secondary burn zone, and in which fuel is injected into both the primary and the secondary burn zones by either a rotary cup injector or a plurality of fuel injector nozzles. The secondary burn zone with separate fuel injection allows for the diameter of the engine to be reduced in size but still allow for adequate power and efficiency to be reached for powering the vehicle. Air flow from the compressor is used to cool the combustor walls before being injected into the combustor, and to pass through and cool the guide nozzles and a main bearing located near the hot section of the combustor prior to being introduced into the combustor.

A combustion device used in gas turbine engines includes an annular combustor that contains the combustion process of air and fuel and then guides the hot gas products to a first stage turbine subsection of a gas turbine engine. The annular combustor has an inner/outer shell having corrugated surfaces that extend radially outward and inward across an entire hot gas stream inside the annular combustor. The corrugations twist about the engine centerline in a longitudinal direction of travel of the engine. The resulting flow path accelerates and turns the hot gas stream to conditions suitable for introduction into the first stage turbine blades, which eliminate the need for first stage turbine vanes. The annular combustor is configured with a system of fuel and air inlet passages and nozzles that results in a staged combustion of premixed fuel and air.

The invention discloses a novel oxygen enrichment tiny-oil ignition and ultralow load stable-combustion combustor. The novel oxygen enrichment tiny-oil ignition and ultralow load stable-combustion combustor comprises an oxygen enrichment guide pipe, a primary air pipe, a cylindrical oil-coal mixed combustion chamber, a secondary air pipe, a secondary air box and a pre-combustion chamber, wherein the central axes of the primary air pipe, the cylindrical oil-coal mixed combustion chamber, the secondary air pipe, the secondary air box and the pre-combustion chamber coincide. A secondary air inlet inclining in the circumferential direction is formed in the pipe wall of the secondary air box; the primary air pipe penetrates through the secondary air box in the axial direction, the oil-coal mixed combustion chamber is coaxially arranged in the primary air pipe, and a high-energy tiny-oil ignition oil gun and the oxygen enrichment guide pipe are arranged in the oil-coal mixed combustion chamber; the secondary air pipe with a rotational flow impeller is coaxially arranged outside the primary air pipe in a sleeved mode and an outlet end is provided with a bluff body; the pre-combustion chamber is arranged in the secondary air box, the inlet end of the pre-combustion chamber is provided with a graded air duct, and a plurality of disturbance air nozzles are installed in an outlet of the combustor. The ignition fuel saving ratio reaches over 90% and the novel oxygen enrichment tiny-oil ignition and ultralow load stable-combustion combustor has the function of low load stable combustion and the function of ultralow load stable combustion; the technologies of oxygen enrichment, coal dust concentration, graded air feeding and the like are adopted, so that the novel oxygen enrichment tiny-oil ignition and ultralow load stable-combustion combustor has the advantages of being high in coal dust burn-off rate, low in NOx discharge and the like.

The invention discloses a surfacing electrode for repairing a hot forged mould, which uses a low-carbon steel H08A core wire conforming to the GB/T3429 requirement. The solid component quality content of coating is as follows: 30-40% of marble, 12-20% of fluorite, 1.5-3% of zircon sand, 0-2% of soda ash, 2-5% of silicon epitaxy material, 1-3% of titanium white, 0-3% of flogopite, 1-2% of rare earth fluoride, 3-7% of manganese metal, 2-5% of ferrosilicon, 4-6% of ferrotitanium, 4-8% of chromium metal, 4-8% of ferromolybdenum, 6-12% of metallic nickel and 1-2% of aluminium magnesium alloy. The invention has favorable welding rod performance, smooth welding rod surface, high yield and stable eccentricity; electric arc is easy to ignite and is stable to burn; coating is even to melt, a welding line is attractive in shape, and slag is easy to clean; and a deposition metal weld metal buildup has moderate welding state hardness which reaches the requirements of the hot forged mould, thus improving the service life cycle of the hot forged mould.

The invention discloses an in-situ combustion combustion-supporting ignition method. The method comprises the steps that an electric igniter is tripped in the preset position in an oil tube in a well; air is continuously injected into the well from the oil tube at a first preset speed, and after a liquid level in the well is pressed into a stratum, the electric igniter is started to heat the injected air; after the air is heated by the preset heating time, a power source of the electric igniter is turned off, the electric igniter is taken out, and the air is continuously injected at the first preset speed in the process of taking out the electric igniter; air is injected into the well from the oil tube at a second preset speed, meanwhile, iron pulverized coal is injected, and an oil layer of a heavy oil reservoir is ignited under the action of heat released by combustion of the iron pulverized coal and the air. Through the electric igniter, the oil layer is preheated, and water of near bore zones is reduced. The iron pulverized coal has the functions of profile correction and channeling blocking, combustion products are stored in holes, a gas entry profile continues to be adjusted, ignition is facilitated better, gas channeling is reduced, and meanwhile fast ignition is achieved.

A hookah accessory comprising a motor driven vacuum secured in a housing, vacuum port, filter between the vacuum port and vacuum used to apply a suction force used to ignite and start a hookah, blower port in pneumatic communication with the output/return port of the vacuum to provide a blow force used to clean hoses, switches in the vacuum and air pressure ports to automatically turn on the accessory when inserting a hose and fixed resistors in series with the switches for setting the vacuum at two constant speeds for a set suction force and set air pressure force. Alternatively, the accessory may have a variable resistor (rheostat) to adjust the speed of the motor, which adjusts the suction and blowing forces. The filter is in line with the vacuum port and vacuum to capture debris before it reaches the vacuum or vacuum motor. The vacuum and blower ports securely receive and hold different sized hoses and, or hose tips in a manner that creates a substantial airtight seal.

The invention relates to a welding repairing method for aluminum parent metal, in particular to an in-situ self-propagting welding repairing method for aluminum parent metal. The method is characterized in that: self-propagting medical preparation is firstly prepared, and cleaning, oil removal, oxide film removal are carried out on parts to be welded of aluminum parent metal, then welding fluid is coated on a groove face; according to the shape and size of the groove, a mould with lower holes is made by graphite and is fixed on the upper part of the groove, and a graphite plate is clamped at the two sides of the groove by a clamping device and forms a melting chamber together with the mould, an automatic fusible plug is laid at the bottom part of the mould, then the self-propagting medical preparation is poured into the mould, pyrophoric powder is coated above the self-propagting medical preparation, after the parent metal is preheated to a certain temperature, the pyrophoric powders is lighted, thus realizing in-situ self-propagting welding repairing of the aluminum parent metal. By the method provided by the invention, intense magnetic field interference can be avoided, welding quality can be improved, labor intensity can be relieved, and the operation is easy and rapid.