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Topic: Scroll compressor

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	Scroll compressor - Biocrawler (Site not responding. Last check: 2007-10-12)
		One of the scrolls is fixed, while the other orbits eccentrically without rotating, trapping and compressing pockets of fluid between the scrolls.
		Scroll compressors are also widely used in other consumer goods that use refrigeration cycles.
		A scroll compressor operating in reverse is known as a scroll expander, and can be used to generate mechanical work from the expansion of a fluid.
	www.biocrawler.com /encyclopedia/Scroll_compressor (139 words)

	Scroll Compressors Cool the Cost of Cooling Milk (Wisconsin Public Service Corporation) (Site not responding. Last check: 2007-10-12)
		Scroll compressors require much less current than conventional compressors and are even able to run on single-phase electricity.
		The scroll compressor is a new technology with the simple design of dual spinning scrolls that compress and move refrigerant more efficiently and reliably than traditional compressors.
		Scroll technology works like this: Gas refrigerant is compressed when one spiral orbits around a second stationary spiral, creating smaller and smaller gas pockets and higher gas pressures.
	www.wisconsinpublicservice.com /farm/scroll.asp (496 words)

	Method of aligning scroll compressor pump cartridge - Patent 7043817 (Site not responding. Last check: 2007-10-12)
		A method as set forth in claim 1, wherein said non-orbiting scroll and said crankcase are further formed to have alignment surfaces, said alignment surfaces pre-positioning said crankcase to said non-orbiting scroll prior to the insertion of said threaded fastener.
		By properly positioning the fixed scroll relative to the crankcase, it is ensured that the non-rotation coupling is properly positioned relative to the fixed scroll.
		The precision hole is drilled relative to a datum on both the fixed scroll and the crankcase such that the holes will be properly positioned relative to the datum such that when they are aligned, it is ensured that the fixed scroll and crankcase are properly orientated relative to each other.
	www.freepatentsonline.com /7043817.html (1421 words)

	Oil-free scroll compressor - Patent 5358387
		A motor or motors are provided to rotate the scrolls in a same direction and at a same speed, whereby a gas is compressed in a compressing space formed between the scrolls and discharged to outside through a central discharge port formed in the end plate of one of the scrolls.
		In the oil-free scroll compressor, no lubricant oil is supplied to the compressing space formed between the scrolls and, therefore, small clearances are held between the wraps of these scrolls and between the top of the wrap of one of the scrolls and the bottom surface opposed thereto of the other scroll.
		However, the screw type compressor is rather suitable for use as a compressor having a capacity higher than intermediate capacity, and it is actually difficult to produce an oil-free screw compressor having a capacity lower than 15 KW because it has a lowered performance and an increased temperature of discharged air.
	www.freepatentsonline.com /5358387.html (2013 words)

	Scroll Compressors - Energy Knowhow - Georgia Power - Products (Site not responding. Last check: 2007-10-12)
		The scroll compressor uses one stationary and one orbiting scroll to compress refrigerant gas vapors from the evaporator to the condenser of the refrigerant path.
		The lower scroll is driven by an electric motor shaft assembly imparting an eccentric or orbiting motion to the driven scroll.
		Scroll compressors are a relatively recent compressor development and will eventually replace reciprocating compressors in many cooling system applications, where they often achieve higher efficiency and better part-load performance and operating characteristics.
	www.southernco.com /gapower/energy_knowhow/scroll_compressors.asp?mnuOpco=gpc&mnuType=com&mnuItem=ps (213 words)

	Carrier- Commercial Comfort - Ducted Systems - Ducted Units with Scroll Compressor (Site not responding. Last check: 2007-10-12)
		The compressor is the heart of any air conditioning system.
		And at lower discharge pressure the capacity delivered by the compressor is more, resulting in less power consumption and also thereby increasing the cooling efficiency of the unit.
		The outdoor condensing unti houses the Scroll Compressor.
	www.carrierindia.com /commercial/ducted/scroll/scroll.htm (557 words)

	Get SEERious About Air Conditioning Efficiency
		The compressor moves - or pumps - the refrigerant - a heat transfer liquid - between the evaporator and the condenser.
		Compressor technology - As the federal government prepares to impose higher minimum efficiency regulations and homeowners seek to meet their indoor comfort needs with an energy efficient solution, compressor technology is taking on a greater importance.
		Scroll compressors now power the vast majority of the higher efficiency, 13-plus SEER systems sold in the United States - and Copeland Scroll™ is the leading brand of scroll compressor found inside these systems.
	www.emersonclimate.com /Seer/CC_001431.htm (607 words)

	Scroll Compressor Reliability
		Scroll compression simplifies the compression process to 2 parts: a fixed and an orbiting scroll.
		Copeland's scroll elements are precision machined to microns of an inch in length, providing a metal-to-metal sealing surface that polishes itself in over time.
		Compliance is the ability of scrolls to separate under abnormal conditions.
	www.testequity.com /staticprint/46 (331 words)

	Scroll Compressor Reversed
		Scroll Compressor: The new technology that came out in the late 1980's, and certainly to replace ALL...
		Protects scroll compressor from reverse rotation during startup if phase is reversed from the factory setting.
		Scroll Compressor is the industry standard for smooth, efficient performance...
	www.coolairconditioners.com /scroll-compressor-reversed.html (832 words)

	Visteon's Scroll Compressor Delivers Cooling and Energy Efficiencies
		Visteon's scroll compressor design is based on the principle of circle involutes or scrolls, which revolve around each other in a "rolling" motion.
		The compressor is the engine behind any refrigeration or air conditioning system and the way in which it operates will play a large part in determining the effectiveness and efficiency of the system as a whole.
		At the same time, the compressor helps minimize the effects of air conditioning on power consumption at typical road speeds." The scroll compressor is capable of running for extended periods of time at 10,000 RPM (revolutions per minute) and exceeds OEM's requirement of reliable service over 10 years or 240,000 kilometers.
	www.theautochannel.com /news/2001/03/26/017382.html (325 words)

	HEAT SIPHON® Scroll Compressor Option
		Durability - A Fixed Scroll and an Orbiting Scroll are all that is required to compress freon gas.
		And because the SCROLL is designed to be compliant, it will accept and handle incompressible liquid refrigerant which may enter the compressor in cold air temperatures or at initial start-up where the evaporator may be unable to completely evaporate all of the liquid refrigerant.
		Scrolls can be perfectly balanced and coupled with the continuous flow they eliminate valve noise.
	www.heatsiphon.com /options.html (320 words)

	Scroll type compressor with displacement adjusting mechanism (US4505651)
		A fixed scroll is fixed within the housing and has a circular end plate from which a first wrap extends.
		The end plate of the fixed scroll partitions the inner chamber of the housing into a front chamber connected to the fluid inlet port and a rear chamber.
		The end plate of the fixed scroll has at least two holes which are placed at symmetrical position and connect the fluid pockets to the outer chamber.
	www.delphion.com /details?pn10=US04505651 (390 words)

	Tyler Scroll Compressor Systems
		Scroll compressors are more tolerant to liquid refrigerant than reciprocating compressors, thereby improving compressor reliability.
		Scroll compressors have fewer moving parts than reciprocating compressors also adding to compressor reliability.
		Scroll compressors are smaller and weigh less than reciprocating compressors.
	www.tylerrefrigeration.com /mechanical/scroll.htm (133 words)

	Apparatus for preventing backflow of gas of scroll compressor patent invention
		Therefore, a gas compressed by an orbiting movement of the fixed scroll and the orbiting scroll is smoothly discharged to the discharge pipe through the hermetic container during operation of the compressor, and the gas discharged to the discharge pipe is prevented from backflowing into the hermetic container when the operation is stopped.
		The compressor is a core factor which constitutes a freezing cycle system, and there are various kinds of compressors according to a compression mechanism, such as a rotary compressor, a scroll compressor, a reciprocal compressor and the like.
		[0005] The scroll compressor comprises a motor unit generating a rotary force; and a compression unit for sucking, compressing and discharging a gas as an orbiting scroll orbits in meshing engagement with a fixed scroll upon receiving a driving force of the motor unit.
	www.freshpatents.com /Apparatus-for-preventing-backflow-of-gas-of-scroll-compressor-dt20060629ptan20060140797.php (875 words)

	How To Diagnose Air Conditioning Compressors
		A scroll compressor uses a set of spirals and is more efficient because there is no reciprocating parts.
		The compressors on a residential heat pump or air conditioner is usually hermetic that means the motor and the part that pumps is built into one box also called a can.
		Scroll compressors do not need start components but they DO need and anti restart timer or they can run backwards if the power is interrupted.
	toad.net /~jsmeenen/compressor.html (1226 words)

	MPMN - May 2005 - Profile
		One scroll is indexed or phased 180° with respect to the other to allow the scrolls to mesh.
		As the moving scroll orbits around the fixed scroll, the pockets formed by the meshed scrolls follow the spiral toward the center and diminish in size.
		The compressor inlet is at the periphery of the scrolls.
	www.devicelink.com /mpmn/archive/05/05/015.html (838 words)

	Air Squared - New Semi-Hermetic Scroll Vacuum Pump/Compressor Delivers 80+% Volumetric Efficiency With Smooth, Quiet ...
		One scroll is indexed or phased 180 degrees with respect to the other to allow the scrolls to mesh.
		As the moving scroll orbits around the fixed scroll, the pockets formed by the meshed scrolls at the outer edge follow the spiral inward and shrink in size.
		Gas entering the scroll is trapped in two diametrically opposed pockets and compressed as the pockets move toward the center, where the discharge port is located.
	www.newequipment.com /303/ProductDetail/58788/frmProductDetail.aspx (474 words)

	Scroll Compressor Technology and Applications
		In air conditioning, smaller compressors (1 to 6 tons) are found in residential systems such as heat pump systems used to heat and cool individual homes or business.
		Larger compressors (7 to 25 HP) are found in commercial applications such as process chillers and in a variety of condensing unit systems.
		Refrigeration scroll compressors are applied in a wide range of applications including; supermarket racks, bulk milk cooling, truck transport, and marine containers.
	www.copeland-corp.com /americas/news/news004.htm (242 words)

	Copeland Corporation - Co-Rotating Scrolls for Air-Conditioning Systems
		Scroll compressors, which have been standard in air conditioning and refrigeration since the mid-20th century, consist of two spiral leaves, or scrolls (see Figure 1).
		Scroll compressors used in air-conditioners traditionally have only a few moving parts, including a scroll that orbits within a stationary scroll to compress the refrigerant.
		Copeland Corporation, a manufacturer of compressors and pumps for the air-conditioning and refrigeration industry, was interested in developing a co-rotating compressor scroll that would be smaller, quieter, and more efficient than the orbiting-scroll compressor it had used for many years.
	statusreports.atp.nist.gov /reports/95-06-0022.htm (2445 words)

	Scroll Compressors (Site not responding. Last check: 2007-10-12)
		During the refrigeration cycle refrigerant gas is drawn into the compressor cylinder and compressed during the up-stroke of the compressor piston.
		The scroll compressor is used by all of the major manufacturers in both the air conditioner and heat pump lines.
		While the reciprocating compressor is still in use and found in many popular models it is becoming less prevalent in today's residential equipment.
	www.richardsac.com /scroll_compressors.htm (239 words)

	Visteon Corporation: Scroll Compressors
		Compressors are used to compress and move refrigerant through an air conditioning system.
		The scroll compressor design provides for high volumetric efficiency and excellent reliability — making it a superb choice for heavy duty and diesel applications.
		Our scroll compressor portfolio offers a variety of capacities and is also available with a variable capacity feature.
	www.visteon.com /products/automotive/scroll_comp.shtml (90 words)

	History of Carlyle Compressor
		A Carrier compressor is at the heart of the worlds first room air conditioner, providing equipment in a "package" which could be moved if required.
		These compressors used a crankshaft drive which enabled them to be run at a higher speed.
		Carrier and Bristol announce a partnership agreement to produce scroll compressors at Scroll Technologies in Arkadelphia, Arkansas.
	www.carlylecompressor.com /details_printable/1,2794,CLI1_DIV24_ETI1235_LID,00.html?SMSESSION=NO (564 words)

	Air Compressors, Rotary Screw Air Compressors - CompressorWorld.com
		Remember, compressed air is your 4th ulitity, air compressors and their related compressed air accessories need to be sized accordingly to maximize efficiency and minimize costs.
		Single stage compressors are machines in which compression from initial to final pressure is complete in a single step or stage, normally operating around 100-PSIG.
		Two-stage compressors are machines in which compression from initial to final pressure is completed in two distinct steps or stages, normally operating around 175-PSIG.
	www.compressorworld.com /m/_general/cat_dept.asp (769 words)

	Scroll Compressors
		Enhancing the scroll's inherent reliability are such features as our computer-designed bearings and high-capacity centrifugal oil pump, which provides dependable lubrication to the bearings.
		The Millennium Scroll Compressor stands just 390 to 470 mm (15" to 19") high, has only a 190 mm (7.5") square mounting footprint, and weighs merely 24 to 38 kg (53 to 84 lb).
		Located in Arkadelphia, Arkansas, our scroll compressor plant is the most advanced of its kind in North America -- using the most efficient manufacturing processes in the world.
	www.carlylecompressor.com /corp/details/0,2938,CLI1_DIV24_ETI1260,00.html?SMSESSION=NO (625 words)

	MDL:MPMN:Hotline, (July/Aug 98, p.8)
		While scroll compressors were originally developed for the refrigeration industry, an oilless ported compressor from Air Squared Inc. (Hamilton, OH) is appropriate for medical applications including dialysis machines, ventilators, and nebulizers.
		The orbiting scroll is driven by an electric motor; as it orbits around the fixed scroll, crescent-shaped gas pockets (formed by the meshed scrolls) spiral toward the center and diminish in size.
		Advantages of using a scroll compressor include continuous air delivery, which virtually eliminates discharge pulsation and associated noise; rotary motion that can be balanced for vibration-free, quiet operation; a design composed of just two primary moving parts; running speeds up to 3450 rpm; and rubbing velocities that are 30–50% less than reciprocating or rotary compressors.
	www.devicelink.com /mpmn/archive/98/07/hot.html (1034 words)

	scroll compressor - Want to know more about scroll compressor? (Site not responding. Last check: 2007-10-12)
		Call Vantage Pump and Compressor in San Antonio for a variety of air compressors and vacuum pumps.
		Ruud is the only manufacturer to use Scroll compressors in its entire residential Air conditioner and heat pump product line.
		Tyler's Scroll Compressor Systems provide superior reliability, maximum efficiency and compatibility with all types of refrigerants.
	www.dublin2003.org /find/Scroll-Compressor.aspx (196 words)

	Scroll Compressor, Rotary Screw, Gas Compressor, Breathing Air Compressors, California
		Coast Compressor’s Commitment is to maintain and provide you with the latest technology in all your air compressor and compressor parts requirements, including all industrial compressors and medical air compressors.
		Coast Compressor’s Mission is to serve you better and our experienced technicians take great pride in guaranteeing all of your air compressor equipment, air compressor parts and vacuum needs are served quickly and efficiently.
		If you have any air compressor or compressor parts inquiries, need a quotation, follow up to an existing compressor quotation or price clarification contact us by phone or E mail and you will get the proper attention for your compressor & vacuum equipment requirements.
	www.californiacompressor.com /about.html (318 words)

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