36results about How to "Increased stability range" patented technology

A premix burner has a mixing section (3) for a heat generator, sectional conical shells (5) which complement one another to form a swirl body, enclose a conically widening swirl space (6), and mutually define tangential air-inlet slots (7), along which feeds (8) for gaseous fuel are provided in a distributed manner, having at least one fuel feed (11) for liquid fuel, this fuel feed (11) being arranged along a burner axis (A) passing centrally through the swirl space (6), and having a mixing tube (4) adjoining the swirl body downstream via a transition piece (2). At least one additional fuel feed (13) for liquid fuel is provided in the region of the swirl body, the transition piece (2), and / or the mixing tube (4).

Novel platform mesogens, intermediates, and polymerizable mesogens made therefrom.

Novel platform molecules and polymerizable mesogens made therefrom; novel synthetic pathways for making such platform molecules and polymerizable mesogens.

A heat exchanger with a receiver tank is provided with a multi-flow type heat-exchange body (10), a receiver tank (3), a block flange (4) having a side surface connected to the periphery of a condensing portion outlet of the heat exchanger body (10) and an upper end to which a lower end of the receiver tank (3) is attached and a bracket (6) for supporting the upper part of the receiver tank (3) to the heat exchanger body (10). A flange-shaped pressing stepped portion (31a) is formed on the upper periphery of the tank main body (31) of the receiver tank (3). The bracket (6) is provided with a joint portion (61b) to be secured to the peripheral surface of one of headers (11) and embracing portions (61a) and (62a) that surround the periphery of the tank main body (31) and are engaged with the upper side of the pressing stepped portion (31a) to downwardly press the receiver tank (3). With this heat exchanger, stable refrigeration performance can be obtained and that the assembling operation can be performed easily.

A single-cavity trapped vortex combustor comprises a pressure expander, an inner cartridge receiver, an outer cartridge receiver, a flame tube, a flow guide device, a pre-evaporation device, an oil supply system and a high-energy spark plug, wherein airflow at an inlet of the combustor enters the combustor through the pressure expander, the flame tube is of a single-cavity structure, the inner cartridge receiver, the outer cartridge receiver and the flame tube form an inner duct and an outer duct of the combustor, the flow guide device separates the main flow from the air of the outer duct, air is decelerated and pressurized through the pressure expander, is divided into four paths through the flow guide device and the pre-evaporation device, and respectively enters the main flow, the pre-evaporation device, the inner duct and the outer duct, and the high-energy spark plug is arranged at the bottom of the cavity. The combustion area of the single-cavity trapped vortex combustor is divided into a trapped vortex area and a main combustion area, and the single-cavity trapped vortex combustor further comprises a flame joint supporting plate which transmits flames from a cavity to the main flow.

The invention relates to a combination combustion chamber. A combustion chamber head part consists of a main combustion stage and a pre-combustion stage; the main combustion stage consists of a single-grade axial cyclone, a main combustion stage nozzle and a venturi pipe; and the pre-combustion stage consists of double concave cavities and a pre-combustion stage nozzle. The main combustion stage adopts a single-oil-way centrifugal nozzle, and enables fuel to reach needed concentration and particle size distribution through pressure atomization. The pre-combustion stage adopts an evaporation pipe type nozzle; and the fuel is sprayed to an evaporation pipe for primary atomization through a straight spraying nozzle, and performs secondary atomization and evaporation mixing in the evaporation pipe under an air shearing effect. The combination combustion chamber not only can achieve the purpose of reducing the pollutant discharge in a low-pollution combustion chamber, but also can solve the problems of small-state combustion instability and large-stage visible smoke in a high-temperature-rise combustion chamber so as to widen stable working range of the high-temperature-rise combustion chamber through classified combustion, in particular special structural design and arrangement mode of the pre-combustion stage and the main combustion stage.

A resonator having a support and a seismic mass. Movement means include a first electromagnetic assembly comprising a first electric coil that is not electrically powered. An actuator is connected to a processor unit, the processor unit electrically powering the actuator with adjustable electrical power. A resilient member is interposed between said seismic mass and said support.

The invention relates to a cascade 2-mu m solid laser of double-wavelength mixed pumping, which belongs to the technical field of laser. Pumping light output by a double-wavelength mixed pumping source is focused on 2-mu m laser crystals, the 2-mu m laser crystals absorb the pumping light with different wavelengths lambda 1 and lambda 2 and obtain gains, the two 2-mu m laser crystals are cascadedto realize laser oscillation in a laser resonator comprising a laser totally reflecting mirror, a laser reflecting mirror of 45 degrees and a laser output mirror, and 2-mu m laser is output from the laser output mirror. The invention has the advantages that the absorption of the 2-mu m laser crystals to the pumping light can be increased, the thermal lens effect of the 2-mu m laser crystals is decreased, and the quality of the light beam of the 2-mu m output light is improved, thereby obtaining the output of the 2-mu m laser with high power and high efficiency.

The invention relates to an economical, non-wearing, electrical permanent magnet drive for actively controlling the rotor position in three degree of freedom. The stator windings produce superimposed fields with different pole numbers in the pole pitches by unsymmetrical magnetomotive force distributions.