824 results about "Oil free" patented technology

A drive transmission mechanism for transmitting torque between two or more rotary shafts in synchronization with one another without need for lubrication thereby eliminating occurrence of oil contamination, and an oil-free fluid machine equipped with the mechanism, are provided. A magnetic drive disk 16 and a synchronization gear 18 are attached to a rotary shaft 14 connected to a drive motor 11, a magnetic drive disk 17 and a synchronization gear 19 is attached to a rotary shaft 15, torque transmission from the rotary shaft 14 to the rotary shaft 15 is carried out in two ways, via the magnetic drive disks 16, 17 and via the synchronization gears 18, 19, and at least one of the synchronization gears is made of plastic material. With the construction, torque transmit load between the rotary shafts via the synchronization gears is decreased, and a plastic gear or gears can be adopted for synchronization gears without reducing life of the gears without need for lubrication oil.

This invention provides a small, high efficiency, oil-free turbine-driven alternator (i.e. turboalternator) suitable for conversion of stored energy in a process gas to electrical power, facilitating recapture of energy during operation that would otherwise be wasted. The turboalternator includes a turbine and a generating device operatively connected together by a rotating shaft capable of rotating at high speeds. The rotating shaft is supported by foil gas bearings.

This invention provides a small, high efficiency, oil free motor driven compressor / blower suitable for providing pressurized, contamination-free gas and or air to transportation, industrial and aerospace fuel cell systems or other contaminant-intolerant applications. The motor driven compressor / blower rotor assembly is supported by foil air bearings and rotates at high speed by using a high frequency drive. The impeller is a centrifugal type design. The MDC can be easily integrated into the air management system of a fuel cell.

The invention discloses a computing method of the refrigerating capacity and the refrigerating efficiency of an oil-free refrigerating system and the refrigerating system. The computing method comprises the following steps of (1) collecting parameters; (2) looking up and obtaining an enthalpy value; (3) computing the enthalpy value; (4) computing the refrigerating capacity and the refrigerating efficiency of the refrigerating system. The refrigerating system comprises a refrigerating unit, a computing module and a display module, wherein the display module is electrically connected with the computing module and is used for displaying the computed refrigerating capacity Q and the computed refrigerating efficiency EER. According to the computing method of the refrigerating capacity and the refrigerating efficiency of the oil-free refrigerating system and the refrigerating system disclosed by the invention, a flow meter of which the cost is expensive is not required to be additionally arranged, the computing method is simple and effective, and the cost is lower; the display module can be used for displaying the refrigerating capacity and the refrigerating efficiency to a user for reference through a display panel, so that an operating state of the refrigerating system can be conveniently controlled by the user in real time.

A compliant hybrid gas journal bearing includes compliant hybrid bearing pads having a hydrostatic recess and a capillary restrictor for providing a flow of pressurized gas to the bearing. The bearing also includes an inner rim adjacent the bearing pads, an outer rim and a damper bridge between the inner and outer rims. The damper bridge has an axial length that is less than an axial length of the bearing pads and the outer rim to form a damper cavity on each side of the damper bridge. An integral wire mesh damper is situated within the damper cavity on each side of the damper bridge. Integral centering springs are located between the inner and outer rims to provide radial and rotational compliance to the bearing pads. The oil-free bearing design addresses the low damping and low load capacity characteristics that are inherent in present day compliant air foil bearing designs, while retaining the compliance to changes in rotor geometry.

Exemplary embodiments provide a fixing member having a textured surface, and methods for making and using the textured fixing member. The fixing member can include a substrate having one or more functional layers formed thereon. The one or more functional layers can include an outermost or top surface having a surface wettability that is hydrophobic and / or oleophobic; ultrahydrophobic and / or ultraoleophobic; or superhydrophobic and / or superoleophobic by forming textured features. Such fixing member can be used as an oil-less fusing member for high speed, high quality electrophotographic printing to ensure and maintain a good toner release from the fused toner image on an image supporting material(e.g., a paper sheet), and further assist paper stripping. In addition, the textured surface can provide an oil-free, such as wax-free, toner design for the oil-less fixing process.

Non-contacting cartridge shaft seals prevent leakage loss of process gases in an “oil free” rotary screw compressor or blower, while simultaneously preventing ingress of lubricating oil to the pumping chamber, allowing the compressor / blower to generate process pressure differentials without oil contamination. A compact unitized seal cartridge assembly is provided in the end plates of the pump housing. One of the rotor shafts extends through an aperture in the end plate or housing, between the pumping chamber and oil-lubricated gear / bearing cases. Internal elements have the ability to self-align radially achieving essential concentricity with shaft rotational axes. The rotor shafts or sleeves non-contact relationship during operation allow increased ranges of shaft rotational speeds. Air seal elements restrict flow of process air from the pumping or compression chamber, and oil seal elements with a directional spiral groove on the inside diameter prevent the leakage of lubricating oil to the process or atmosphere.

A water-cooled oil-free air compressor which features compactness and ensures improved productivity and maintainability. The compressor is an oil-free screw compressor which includes a low pressure stage compressor body, an intercooler for water-cooling the compressed air discharged from the low pressure stage compressor body, a high pressure stage compressor body for further compressing the compressed air cooled by the intercooler, and an aftercooler for water-cooling the air discharged from the high pressure stage compressor body. The intercooler and aftercooler each have a plurality of units, all of which are almost equal in shape. A cooler header on each or either of the inlet and outlet sides for compressed air is shared by the units of each cooler.

This invention relates to a refrigeration method and processes that employ a nontoxic and environmentally benign, oil-free refrigerant in a novel vapor-compression thermodynamic cycle that includes a means for enhancing cooling capacity and efficiency. A means of controlling of the process conditions and flow of the refrigerant are provided. The refrigerant in the invention in used in a transcritical cycle.

An oil-free process for forming a fused toner image on a receiver includes forming on a receiver, an image including toner particles that contain a non-crosslinked linear polymeric binder, a wax, and a colorant; and contacting the receiver bearing the toner particle image with a fuser member containing a support, a cushion layer overlying the support, and a release layer overlying the cushion layer. The release layer includes a cured fluorocarbon thermoplastic random copolymer, a cured aminosiloxane copolymer, and a zinc oxide particulate filler. The cured fluorocarbon thermoplastics random copolymer contains —(CH2CF2)x—, —(CF2CF(CF3)y—, and —(CF2CF2)z— subunits, wherein x is from 1 to 40 or 60 to 80 mole percent, y is from 10 to 90 mole percent, z is from 10 to 90 mole percent, and x+y+z equals 100 mole percent. The receiver in contact with the fuser member is subjected to conditions effective in the absence of a release oil for fixing the toner particle image to the receiver.

A heat pipe heat exchanger for waste heat air purifying and heat energy utilization of heat setting equipment is a heat pipe heat exchanger that is provided with heat pipes of different working mediums. An exothermic section of an air side heat pipe is of a spiral fin structure, and an endothermic section of a waste heat air side heat pipe is of a longitudinal fin structure. 50 percent of heat energy is recycled when the temperature of the waste heat air falls from 180 DEG C to 70-80 DEG C. At the same time, a waste heat air inlet tube and a heated air inlet tube are provided with a slot with a detachable and replaceable yarn dust filtering netting; the steamed and liquidized air that is condensed and discharged from the waste heat air with the heat absorbed by the heat pipe of longitudinal fin structure flows into an oil sump tank along the longitudinal fin, enters a low temperature electrostatic pulse oil fume staticizer, and the oil molecular is ionized in the high pressure pulse positive-negative electrode electric field. The waste heat air discharged from the heat setting equipment fundamentally reaches the requirements of environment protective of low temperature, dust free and oil free.

This invention provides a small, high efficiency, oil free motor driven compressor / blower suitable for providing pressurized, contamination-free gas and or air to transportation, industrial and aerospace fuel cell systems or other contaminant-intolerant applications. The motor driven compressor / blower rotor assembly is supported by foil air bearings and rotates at high speed by using a high frequency drive. The impeller is a centrifugal type design. The MDC can be easily integrated into the air management system of a fuel cell.

To provide a vacuum pump capable of evacuating in pressure ranges from an atmospheric pressure to a high vacuum, capable of rotating at a high speed to be downsized and improved in pumping performance, and capable of producing a completely oil-free vacuum. A vacuum pump for exhausting a gas comprises: a main shaft 5 rotatably supported by a bearing 22; a motor 23 for driving the main shaft 5 for rotation; a first exhaust section 10 having a first rotary vane 13 attached to the main shaft 5, a first fixed vane 14 fixed in a first casing 12, and an intake port 11; and a second exhaust section 30 having a second rotary vane 33 attached to the main shaft 5, a second fixed vane 34 fixed in a second casing 32, and an exhaust port 31. The intake port 11 is located in the vicinity of an end of the main shaft 5, and the first exhaust section 10, the bearing 22 and the second exhaust section 30 are arranged in this order axially along the main shaft 5.

A cylinder is divided into two chambers by a wall to receive a pair of pistons. This reduces the stroke length and correspondingly reduces the linear speed of the piston. This leads to a reduced PV factor associated with degradation and wear of the piston rings. Moreover, the multi-cylinder arrangement provides the same performance in an oil-free compressor assembly without appreciably expanding dimensional constraints relative to known systems.

A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.

The invention discloses a processing method of a leisure dried product of mixed fish and vegetable, belonging to the technical field of leisure food processing. The processing method comprises: taking fresh fish and a great quantity of vegetable as raw materials; adding salt into rinsed minced fish, and chopping into minced fillet; mixing with vegetable paste at the ratio; and after shaping, curing, cooling, aging and slicing, drying by hot wind until moisture content is 9-11%; and then frying and puffing to obtain oil-perfume chips or baking to obtain mixed chip of fish and vegetable of which the moisture content is 3-4% after puffing with microwave into oil-free chips or drying with microwave in vacuum until the moisture content is 9-11%. In the method, fresh fish and other vegetables are respectively mixed, the porous and crispy dried mixed chip of the fish and vegetable can be obtained while applying for dewatering materials by the combination of the drying technology. In the processing method, the utilization rate of the raw material is greatly improved so as to greatly improve economic benefit, and the obtained product is rich in biological activity ingredients and has multiple health care functions.

This invention relates to a process for processing heavy oil. The process comprises: removing asphalt from vacuum residual oil by butane deasphalting to obtain asphalt-free oil and oil-free hard asphalt, mixing asphalt-free oil with one or two of atmospheric residual oil and vacuum wax oil, catalytically pyrolyzing to obtain light hydrocarbons, gasoline and diesel oil with high added values, vacuum-distilling residual oil slurry to obtain light oil slurry and tapped heavy oil slurry, mixing light oil slurry with part of oil-free hard asphalt, pyrolyzing to obtain 7# commercial fuel oil, and adequately mixing tapped heavy oil slurry with the other part of oil-free hard asphalt in a static mixer to obtain advanced petroleum asphalt for road construction.

A method for regenerating an inactivation SCR denitration catalyst of coal-fired power plants by an antitoxic renewable liquid includes: S1 air purging the catalyst with oil-free dry compressed air for 10-30 minutes; S2 impregnating in a cleaning fluid for ultrasonic processing for 10-30 min and drying at 80-110 DEG C for 60-180 min; S3 impregnating in the antitoxic renewable liquid for 60-80 min, drying at 80-110 DEG C for 60-180 min for at least twice; S4 discharging for 30 minutes under the atmosphere of 25 ml / min oxygen under 45 kV voltage in dielectric barrier discharge reaction gas; and S5 roasting for 3-12h at 300-500 DEG C. After the regeneration, the activity of the catalyst is recovered by more than 90%, the catalyst mechanical properties and antitoxic performance are effectively improved, and the service life is prolonged.

A high-speed blower designed to move and circulate dry process gas includes an axial or mixed-flow compressor driven by a brushless permanent magnet synchronous motor utilizing a remotely mounted variable frequency drive. The blower uses foil gas bearings which enable high-speed, low-power loss, and oil-free operation. The blower comprises an outer blower housing and an inner blower housing defining an annular cavity therebetween. A cooling flow of process gas may be leaked through the inner blower housing to cool the internal operational components of the blower, including the motor and the bearings, and to capture heat therefrom, which can be added to the process gas flow moving through the blower. Diffuser vanes and flow-straightening vanes are provided on the outer surface of the inner blower housing to improve the fluid dynamics of the process gas flow through the blower and heat transfer from the inner blower housing.

A turbo chiller that has an oil-free configuration, which reduces the frequency of maintenance and maintenance-induced release of refrigerant, and can achieve a reduced environmental impact by utilizing the characteristics of the low-pressure refrigerant R1233zd(E) that reaches negative pressure at a saturation temperature of 18° C. or lower. The turbo chiller comprises a refrigeration cycle that includes a turbo compressor, a condenser, a decompression device, and an evaporator connected in sequence via piping and is filled with a refrigerant; wherein the refrigerant is a low-pressure refrigerant R1233zd(E) refrigerant with low global warming potential and low ozone depletion potential; the turbo compressor has a direct drive configuration in which a rotating shaft of impellers is directly joined to a motor; and the rotating shaft is supported by magnetic bearings.

A preparation process of nano self-clearing leather or product comprises firstly mixing organic fluoro-resin, nano solid particles, silane coupling agent, triethanolamine and propylene glycol with water to obtain organic fluorine finishing agent, then conducting spray coating, brush painting or roller painting to leather or products with organic fluorine finishing agent under the constant temperature, preliminarily drying for 5-30 min under 30-50 DEG C, and finally completely drying leather and products under 50-95 DEG C. The process endows high roughness factors to leather and products through the compounding of organic fluorine finishing agent and nano solid particles which are used in the traditional leather production, thereby further increasing hydrophobic and oleophobic properties, and making leather have self-clearing function since leather is water free and oil free. Leather and products which are treated are led to have the super hydrophobic and oleophobic properties, and be water free and oil free, thereby realizing the purpose of self-clearing, not only increasing service life, but also having significant benefits in environmental-friendly and energy-saving aspects.

A small-scale dynamic simulator for crude oil refinery desalters has a pressurized oil deviblis configured to hold a supply of crude oil and a water deviblis configured to hold a supply of wash water. At least one chemical feed pump selectively adds emulsion breaker chemicals to the desalter simulator and a low shear metering pump is configured to pump crude oil and wash water through the desalter simulator. An emulsion forming device forms a crude oil-wash water emulsion that is then received in a desalter vessel. The desalting vessel is fitted with electric grids which simulate those found in electric desalters. The emulsion is resolved within the desalter vessel with the assistance of the emulsion breaker chemicals so the wash water and crude oil form distinct phases, with substantially desalted crude oil removed from an upper portion of the desalter vessel and substantially oil-free wash water removed from a bottom portion of the desalter vessel. A portion of the desalter vessel is substantially transparent to allow visualization of the demulsification process and at least one light source is positioned adjacent to the desalter vessel to aid in visualization of a rag layer formed in the desalter vessel. A heated jacket surrounds the desalter vessel to maintain the desalter vessel at the desired temperature.

Epoxy polymers for dental use including the reaction product of a diepoxide oligomer and a bridged dipolyamine are described. The epoxy polymers include the reaction product of diepoxide oligomers comprised of bisphenol A diepoxide oligomers and / or bisphenol F diepoxide oligomers and bridged dipolyamine monomers having two polyamine regions and a hydrocarbon region of at least 28 carbon atoms.

A central drive shaft-sliding knuckle combined with a peripheral crank pin-swing link mechanism (CSPS) to provide an orbiting scroll with radial and axial compliant capability. The CSPS mechanism can be applied to both dual floating scroll and single floating scroll structures to improve performances of scroll devices, particularly in oil-free operations. In addition, an orbiting dual thrust ball bearing mechanism is provided to take thrust load in, for example, a floating scroll compressor with a CSPS mechanism.

An oil-free refrigerant circulation technology for air-conditioning and refrigeration system comprises 99.99% oil-vapor free refrigeration oil, 100% ultra micron oil-aerosol separator built-in with oil reservoir and electronic modulating oil level analyzer. The ultra micron oil-aerosol separator can filter solid contaminant particles down to one micron in size and at the same time can deliver 100% oil-aerosol free refrigerant. With this technology an oil-free refrigerant circulation can be achieved. The problems related to oil carry over, thermal and chemical stability, moisture, oil cleanliness and lubrication in the refrigeration circulation could therefore be avoided. As a result, the energy consumption of the refrigeration system can be largely reduced and the refrigeration efficiency of the system can be significantly enhanced. Thus COP is increased by the use of oil-free refrigerant circulation technology.

The invention discloses a production process of low-salt oil-free fermented bean curd. The production process comprises the following steps: after performing the steps of immersing and washing soybean, grinding the soybean, filtering pulp, boiling the pulp, mixing pulp, concentrating, squeezing, dividing, inoculating, performing primary fermentation, cooling and mildewing, adding 8 to 10 percent of salt and 6 to 8 percent of alcohol; adding a proper amount of spice such as hot pepper powder, ginger powder, garlic powder and the like according to the traditional process; subpackaging into small bottles in one step; integrating fermenting, storing and finished product packaging materials; vacuumizing, so that the vacuum degree of the small bottle is 0.8 to 1.0; performing secondary fermentation for 1 to 2 months under the natural condition; performing secondary sterilization on the mature fermented bean curd, wherein the sterilization central temperature is 80 to 85 DEG C and the sterilization time is 25 to 35 minutes; and obtaining the finished products after passing inspection. The production process has the advantages that the unique flavor of the local traditional fermented bean curd is maintained; the characteristics of the times are achieved; the production process is fashionable and novel; the edible range is widened; the low-salt oil-free fermented bean curd has high nutritional value and preference, can realize industrial production and is safe and healthy; and quality safety of the oil-free fermented bean curd is effectively guaranteed.

The invention discloses a self-adaptive multi-head press fit mechanism. The invention is characterized in that the press fit system comprises 4 pressing heads which are respectively arranged in 4 pistons, are supported by an O-shaped sealing ring and are positioned by a positioning pin so as to form a floating connection. The 4 pistons are arranged in an oil cylinder body; the oil cylinder body and a pressing head body are fixedly connected through a bolt. Viscous pressure oil is fully injected in a cavity formed between the oil cylinder body and the pressing head body; the cavity is sealed by steel balls and screws. The pressing head body is fixed on a bracket through an oil-free bearing and a flange and can be freely rotated. The pressing head body is fixed with pressing plates and gears; the pressing plates are arranged according to required phase positions; the initial phase position is determined by a gear pair; a mating gear is arranged on a pneumatic swing platform; the positioning pin is arranged on the mating gear; the gear pair is driven by the pneumatic swing platform to rotate; the shape of the pressing plate can control the required angles and can automatically lock the phase position. The pneumatic swing platform is arranged on the bracket which is pushed by the oil cylinder to advance and achieves the press fit by the guidance of a guide rod.

The invention relates to a method for processing oil-free fresh-cut potato chips; the method is as follows; the potato chips treated with cold bleaching are subject to continuous high temperature steaming to dehydrate and fully cook the surface, the well cooked oil-free potato chips are sent into a seasoning machine and blended with seasoning dry powder, the potato chips with even seasoning are processed with crisp savory baking on a continuous crisp savory baking device and no edible oil is used in the whole processing procedure; the shape of the fresh-cut potato chip is a thick or thin corrugated sheet shape with the thickness from 1.2mm to 1.8mm, the potato chip is steamed in a continuous high temperature steaming machine with the temperature from 30 DEG C to 100 DEG C for 5-8 minutes; the produced oil-free potato chip not only has the flavor of fried or baked potato chips, but also protects the original fragrance of potatoes to the utmost extent; the potato chip well preserves nutritive ingredients, has crisp and savory taste, does not use any additive, and is safe for eating and suitable for industrial production by adopting flow operation and high automation degree.

An auxiliary power unit for aircraft with a load compressor that delivers cabin air free of oil contamination by supporting a drive shaft for the load compressor with oil-free bearings and coupling the load compressor to a gearbox and power head for the auxiliary power unit through a synchronous magnetic torque coupling on an opposite side of the gearbox to which the power is mounted.