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1818results about "Engine of arcuate-engagement type" patented technology

Low emission energy source

A power generator provides power with minimal CO2, NOx, CO, CH4, and particulate emissions and substantially greater efficiency as compared to traditional power generation techniques. Specifically nitrogen is removed from the combustion cycle, either being replaced by a noble gas as a working gas in a combustion engine. The noble gas is supplemented with oxygen and fuel, to provide a combustion environment substantially free of nitrogen or alternatively working in 100% oxygen-fuel combustion environments. Upon combustion, Very little to no nitrogen is present, and thus there is little production of NOx compounds. Additionally, the exhaust constituents are used in the production of power through work exerted upon expansion of the exhaust products, and the exhaust products are separated into their constituents of noble gas, water and carbon dioxide. The carbon dioxide may be used in conjunction with a biomass to accelerate the biomass growth and to recover the oxygen enriched air resulting from algae photosynthesis for enhancing the operation of the power generator using the as Biomass for processing into methanol / ethanol and biological oils as fuel for the power generator. The biomass fuel is seen as a solar fuel and may be used in conjunctions with other solar fuels like heated thermal oil and others, as well as clean fossil fuels to optimize to clean, and efficient operation of the power generator in various regulatory contexts.
Owner:BRIGHTSOURCE ENERGY

Fluid machine

An outer end of a seal element for a fixed scroll is extended to a position close to an end of an inside spiral wall of the fixed scroll, and an outwardly extended portion is formed at an outer periphery of a disc-shaped base plate of a movable scroll, so that a bottom surface of the movable scroll is always kept in a sliding contact entirely with the seal element during the orbital movement of the movable scroll. A thickness of the outwardly extended portion formed at the outer periphery of the disc-shaped base plate is made smaller than that of the disc-shaped base plate, so that the weight of the fluid machine can be smaller.
Owner:NIPPON SOKEN +1

Scroll compressor

A scroll compressor includes a first scroll and a second scroll. The first scroll has a step portion that separates an elevated portion and a recessed portion of a surface of the first scroll. A spiral wall of the second scroll has a step that separates an elevated portion and a recessed portion of the wall. A first bypass hole is provided in the elevated portion of the surface of the first scroll. A second bypass hole is provided in the recessed portion of the surface of the first scroll. The second bypass hole is within 360 degrees toward a center of the spiral of the first scroll from an outer end of the spiral. The first bypass hole is within 360 degrees from the second bypass hole toward the center of the spiral.
Owner:MITSUBISHI HEAVY IND LTD

Oiless rotary scroll air compressor air inlet valve

An air inlet valve assembly for a rotary scroll compressor is disclosed. The rotary scroll compressor includes stationary and orbiting scroll elements which are intermeshed and nested to form at least one spiraling compression pocket therebetween, a drive mechanism drives the orbiting scroll element in an orbit about the stationary scroll element, and an anti-rotation bearing device maintains the orbiting scroll element substantially non-rotational with respect to the stationary scroll element. The air inlet valve assembly supplies an uncompressed gas (e.g., ambient air) to the compression apparatus and prevents backward rotation of the orbiting scroll element when power to the drive mechanism is terminated. The air inlet valve assembly includes a valve piston positioned within an air intake channel leading to the suction region of the rotary scroll compressor, the valve piston having a first position blocking the air intake channel and a second position unblocking the air intake channel. A valve stem member is connected to a valve housing, the valve housing enclosed a valve cavity wherein the valve piston is located, the valve piston coacts with a valve seat formed on the valve housing, and stop surfaces are provided on the valve piston and the valve stem to limit movement of the valve piston toward the suction region of the rotary scroll compressor.
Owner:WESTINGHOUSE AIR BRAKE TECH CORP

Thermodynamic systems operating with near-isothermal compression and expansion cycles

A thermodynamic system that can approximate the Ericsson or Brayton cycles and operated in reverse or forward modes to implement a cooler or engine, respectively. The thermodynamic system includes a device for compressing a first fluid stream containing a first gas-liquid mixture having a sufficient liquid content so that compression of the gas within the first gas-liquid mixture by the compressing device is nearly isothermal, and a device for expanding a second fluid stream containing a second gas-liquid mixture having a sufficient liquid content so that expansion of the gas within the second gas-liquid mixture by the expanding device is nearly isothermal. A heat sink is in thermal communication with at least the liquid of the first gas-liquid mixture for transferring heat therefrom, and a heat source is in thermal communication with at least the liquid of the second gas-liquid mixture for transferring heat thereto. A device is provided for transferring heat between at least the gas of the first gas-liquid mixture after the first fluid stream exits the compressing device and at least the gas of the second gas-liquid mixture after the second fluid stream exits the expanding device. The compressing and expanding devices are not liquid-ring compressors or expanders, but instead are devices that tolerate liquid flooding, such as scroll-type compressors and expanders.
Owner:PURDUE RES FOUND INC

Discharge valve system of scroll compressor

A discharge valve system of a scroll compressor comprises: a fixed scroll having a discharge hole and discharge bypass holes; a discharge valve assembly mounted at the fixed scroll, for opening and closing the discharge hole by a pressure difference; and an integral bypass valve assembly mounted at the fixed scroll, for opening and closing the bypass holes and interworking the discharge valve assembly. According to this, a discharge amount of gas is maximized in a low pressure ration driving of the scroll compressor thereby to enhance a discharge efficiency. Also, the number of components is greatly reduced thus to reduce a fabrication cost. Also, the number of assembly processes is greatly reduced thereby to enhance an assembly productivity.
Owner:LG ELECTRONICS INC

Scroll compressor capacity modulation with hybrid solenoid and fluid control

A scroll compressor includes a compressor shell having first and second scroll members. The scroll members each have a base and a generally spiral wrap extending from its base. The generally spiral wraps of the first and second scroll members interfit to define compression chambers. A shaft causes the second scroll member to orbit relative to the first scroll member. At least one bypass port is formed in a base of one scroll member, and communicates with at least one of the compression chambers. The bypass port communicates with a passage leading to a suction pressure chamber within the compressor shell. A solenoid valve is movable between a reduced capacity position and a full capacity position, and selectively supplies a pressurized fluid to a fluid valve associated with the bypass port, such that movement of the solenoid can control whether the bypass port is open or closed.
Owner:DANFOSS SCROLL TECH
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