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7547195 |
Scroll compressor with high side to low side oil bleed valve
A scroll compressor is provided with an oil bleed valve that selectively communicates a discharge pressure chamber to a suction pressure chamber. The oil bleed valve controls flow of hot oil...
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7540718 |
Hermetic compressor
A hermetic compressor comprises a hermetic container, an electric motor installed inside of the hermetic container, a compressing mechanism disposed within the hermetic container and driven by the...
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7491036 |
Method and system for cooling a pump
A processing system utilizing a supercritical fluid for treating a substrate is described as having a pump for recirculating the supercritical fluid over the substrate. For various applications in...
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7316541 |
Engine-powered air compressor with a controller for low oil condition
An air compressor with an internal combustion engine having an engine oil sump, a compressor driven by the internal combustion engine and having a compressor oil sump, and a controller coupled to...
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7204678 |
Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method
The invention relates to a method for controlling the oil recirculation in an oil-injected screw-type compressor which, between the oil separator ( 10 ) and the compressor element ( 1 ), comprises...
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7186093 |
Method and apparatus for cooling motor bearings of a high pressure pump
A system for cooling the bearings and motor in a pump assembly used for circulating supercritical fluid is disclosed. The system uses a pressurized coolant fluid that can be substantially pure CO 2...
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7165949 |
Cavitation noise reduction system for a rotary screw vacuum pump
A rotary screw vacuum pump system includes a vacuum bypass system, which communicates with a first closed cell formed by the rotor system. An air bypass valve within an air communication conduit is...
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7114913 |
Lubricant-cooled gas compressor
In a lubricant-cooled gas compressor ( 10 ) the temperature of separated lubricant returned to the air-side ( 11 ) is monitored by a thermostatically controlled restrictor valve ( 22 ) which...
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7094037 |
Oil-cooled compressor
An oil-cooled screw compressor which can maintain the discharge temperature of discharge gas at an appropriate level is provided. The oil-cooled screw compressor comprises a compressor body, an oil...
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7083395 |
Pump system for pumping liquefied gases
Under one aspect of the present invention, a liquefied gas pump assembly is coupleable to a source of liquefied gas. A cooling assembly is positioned generally adjacent to a pump module. The...
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7081728 |
Apparatus for controlling heat generation and recovery in an induction motor
An induction motor system comprising an induction motor, equipped with a heat recovery and water pumping apparatus and an apparatus for controlling the electrical efficiency and resulting heat...
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7059837 |
Variable speed oil-injected screw compressors
The invention relates to the use of variable speed control of the cooling fan on a variable speed oil-injected screw compressor. A screw compressor ( 11 ) comprises at least one stage of...
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7052249 |
Air/oil separating tank—thermostatic valve—minimum pressure valve—oil cooling radiator—compressed air cooling radiator group
A group is provided for a compressed air distribution unit of the type including an intake regulator, an oil bath-screw type compressor, an air/oil separating tank, a minimum pressure valve, an air...
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7033144 |
Cooling fan for a screw compressor drive motor
A oil-cooled type screw compressor of the present invention includes a compressor main unit storing a pair of male and female screw rotors driven by a motor and meshing with each other, a cooling...
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6889665 |
High pressure pump for a fuel system of an internal combustion engine, and a fuel system and internal combustion engine employing the pump
A high-pressure piston pump for a fuel system of an internal combustion engine, includes a housing, a piston, which defines a working chamber, and drive shaft having at least one crank section and...
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6848889 |
Oil utilized as motor protector trip for scroll compressor
A scroll compressor has lubricant flow which communicates lubricant onto a motor protector when adverse conditions are present causing the motor protector to trip the motor and stop further...
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6814033 |
Temperature sensitive fluid type fan coupling apparatus
A temperature sensitive fluid type fan coupling apparatus obtains linear characteristics without spoiling the drag performance. The fan coupling apparatus has a sealed case divided by a partition...
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6748923 |
Injection system for an internal combustion engine and method for regulating and/or bleeding of said system
An injection system for an internal combustion engine comprises a valve arrangement ( 26 ), connected to an inlet ( 24 ) to a high pressure pump ( 8 ), which regulates the flow of fuel for...
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6695602 |
Bacterial growth inhibition in a circulation system comprising a compressor
The present invention relates to a compressor ( 1 ) that has an associated coolant circulation system ( 1, 4, 6, 8, 11, 13 ), and also to a method of maintaining a low bacteria content in the...
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6648607 |
Scroll compressor with oil reservoir associated with motor protector
A scroll compressor has lubricant flow which communicates lubricant onto a motor protector causing the motor protector to trip the motor and stop further rotation when a predetermined lubricant...
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6632077 |
Hybrid bearing arrangement for centrifugal compressor
A centrifugal compressor that includes a low speed shaft connected to a drive motor and a high speed shaft containing an impeller. The high speed shaft is coupled to the low speed shaft by a gear...
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6579078 |
Multi-stage centrifugal compressor driven by integral high speed motor
A multi-stage centrifugal compressor with an integral high-speed motor for compressing air has a variable speed permanent magnet motor having electronically commutated stator coils surrounding a...
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6575707 |
Air compressor having thermal valve
A compressor system includes a fluid system having a cooler and a valve. The valve includes a housing and a spool disposed within the housing. The spool has a temperature sensitive wax cartridge,...
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6481978 |
System and method for protecting turbine and compressor during shutdown
A system and associated method for protecting during a shutdown a turbine having a turbine shaft and a compressor driven by the turbine shaft. The system include a first lubrication system, a...
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6474953 |
Compressor control system and method for controlling the same
The invention relates to a method for controlling a compressor installation with at least one lubricated screw-type compressor element ( 1 ) connected to a pressure vessel ( 11 ) which is driven by...
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6390072 |
Pump assembly
A pump assembly flows pressurized engine oil to HEUI fuel injectors in a diesel engine. The assembly includes an inlet throttle valve which controls the volume of oil flowed to the pump dependent...
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6302654 |
Compressor with control and protection system
A compressor protection and control subsystem for a rotary compressor provides temperature pressure, mis-wiring and vibrational protection for the scroll machine. The vibrational protection...
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6287084 |
Compressor assembly
A compressor system with a water-injection cooled compressor (12) in a cooling water circuit comprises a measuring device (30) in the cooling water circuit (20) to determine the conductivity of the...
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6257837 |
Variable oil flow regulator and method therefor
A variable oil flow regulator for minimizing noise generated typically by an oil-injected rotary screw compressor when the compressor transitions from an on-load mode for compressing fluid to an...
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6227823 |
Compressed gas dispensing station with high pressure compressor with internal cooled compression
A compressed gas dispensing station having a high pressure gas compressor with a cyclic control system for selective recirculation of cooled, ultra high pressure gas through the compression chamber...
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6149408 |
Coalescing device and method for removing particles from a rotary gas compressor
A compressor system for creating essentially liquid-free fluid flows includes a screw compressor that has an inlet port for receiving a low pressure gas stream, a main lubrication injection port...
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6125642 |
Oil level control system
This oil level control device is for a refrigeration system, the control device being attached between the compressor and the oil supply. The control device includes a housing having an inlet...
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6059540 |
Lubrication means for a scroll-type fluid displacement apparatus
A scroll-type fluid displacement apparatus has two interfitting spiral-shaped scroll members which have predetermined geometric configurations. The novel design provides an oil-gas separation and...
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6059539 |
Sub-sea pumping system and associated method including pressure compensating arrangement for cooling and lubricating
A pressure compensator for a sub-sea pumping system for pumping an effluent from a deep-sea wellhead comprising a topside module, a sub-sea module, and an umbilical connection between the topside...
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5882182 |
High-temperature motor pump and method for operating thereof
A high-temperature motor pump is operated by a method wherein coolant is supplied in a manner to maintain the temperature thereof sufficiently high to keep its viscosity at a low level for smoothly...
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5807076 |
Lubrication method and lubrication controlling apparatus for clutchless compressor
An electromagnetic valve (32) opens and closes a pressurizing passage (31). When the pressurizing passage (31) is opened, a swash plate (15) mounted on a rotary shaft (9) inclines toward the...
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5769610 |
High pressure compressor with internal, cooled compression
A high pressure gas compressor in one embodiment having an internal two staged compression with a compression chamber formed in part by a positive displacement, stepped piston and cylinder...
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5716197 |
High pressure compressor with internal, inter-stage cooled compression having multiple inlets
A high pressure gas compressor having an internal two staged compression with a compression chamber formed in part by a positive displacement, stepped piston and cylinder configuration, providing a...
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5694780 |
Condensed liquid pump for compressor body cooling
A refrigeration system which has in a closed loop a compressor body, with a cooling jacket, for compressing a refrigerant, a condenser for condensing the compressed refrigerant to a liquid...
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5688109 |
Oil-level controller for compressor
A lubricant (L) is stored in a lubricant reservoir (2c) of a casing (2). One end of a lubricant takeout pipe (15) is in communication with the lubricant reservoir (2c) and the other end thereof is...
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5685168 |
Refrigerating apparatus
In a refrigerating apparatus having a compression mechanism (21), an outdoor heat exchanger (24), an outdoor motor-operated expansion valve (25) and an indoor heat exchanger (32), the compression...
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5674053 |
High pressure compressor with controlled cooling during the compression phase
A high pressure gas compressor in one embodiment having an internal two staged compression with a compression chamber formed in part by a positive displacement, stepped piston and cylinder...
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5522233 |
Makeup oil system for first stage oil separation in booster system
In a system having low and high stage compressors with an oil separator downstream of each stage there can be a tendency for oil from the first stage to collect in the second stage. So, responsive...
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5513671 |
Hydraulically controlled water spool valve
A valve, to control the injection of lubricant into a viscous material pump pipeline is disclosed. The valve is operated off a parameter of the viscous material pump such as hydraulic fluid...
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5310020 |
Self contained lubricating oil system for a centrifugal compressor
A compressor includes an air cooled lubricant temperature regulator and an engine for providing motive force to the compressor. A first, electric-driven, self-priming pump provides a supply of...
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5282726 |
Compressor supercharger with evaporative cooler
Apparatus and method for increasing the capacity of a gas compressor. The apparatus comprises a supercharger for compressing a gas flow and an evaporative cooler for cooling and ducting the...
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5211542 |
Method and apparatus for oil sump pressure control
In a compressor having an oil sump located therein, a restricted communication is provided between the oil sump and the suction plenum. As a result, froth generation due to a rapid pressure drop in...
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5171130 |
Oil-cooled compressor and method of operating same
An oil cooled compressor includes a compressor body having a low pressure suction passage and a high pressure discharge passage. An oil tank is mounted to the discharge passage such that oil and...
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5142875 |
Cooled pumping system
A method and apparatus for accurately regulating the compressibility of a compressible fluid in a pumping system utilizing a single zone of controlled cooling. Cryogenic cooling is employed for...
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5090873 |
Crankcase oil separator
In a refrigeration motor compressor of the hermetic type containing an electric motor compartment, and a crankcase compartment, an oil separator installed in the crankcase arranged to prevent oil...
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