Matches 101 - 150 out of 170 < 1 2 3 4 >
Match Document Document Title
5001908 Oil separator for refrigeration apparatus  
An oil separator suitable for separating oil from vaporized refrigerant leaving the high pressure discharge side of a refrigerant compressor, and for returning the separated oil to the compressor...
4959965 System for monitoring a liquid entrained in a fluid  
A monitoring system for detecting contamination of a liquid entrained in a circulating fluid, including a housing having an inlet for receiving the fluid, a reservoir for containing extracted...
4957517 Sound attenuating liquid-gas separator  
Sound attenuating liquid-gas separation apparatus includes nested elements which are tuned to abate noise in general and at predetermined frequencies in particular in a screw compressor assembly....
4800736 Heat pump  
A heat pump having reversible heating and cooling cycles for circulating a refrigerant therein for adding heat to and removing heat from space, the heat pump comprising a heat exchanger for adding...
4788825 Oil separator  
Oil separation for a horizontal refrigeration screw compressor is achieved in a series of steps which achieves nearly oil-free refrigerant gas. The refrigerant is discharged from the compressor...
4741177 Oil separator in a coolant system  
In coolant systems oil mixed with the coolant is often removed in a separate oil separator on the high-pressure side of the compressor. In order to obtain a compact design in a coolant system...
4724928 Single stage oil pump lubrication system  
Oil normally having refrigerant gas entrained therein is drawn from a sump. A portion of the oil is returned to the sump to agitate the oil in the sump to enhance gas separation therefrom. The...
4662190 Integral slide valve-oil separator apparatus in a screw compressor  
The slide valve assembly by which the capacity of an oil-injected screw compressor is controlled includes a valve portion connected to a piston. The valve portion is located in the screw rotor...
4611472 Heat pump equipment  
A heat exchange apparatus including an external rotor. An internal stator is hermetically sealed within the rotor. An inertia device, attached to the stator, is able to resist movement of the...
4506523 Oil separator unit  
An oil separator unit for use in an oil separation and return system for the compressor means of a refrigeration system, including a unitary oil separation and oil accumulator vessel having an...
4497185 Oil atomizing compressor working fluid cooling system for gas/vapor/helical screw rotary compressors  
Where a helical screw compressor gas or vapor working fluid is not too soluble in the compressor lubricant for compression process cooling, such lubricant after separation from the working fluid...
4478050 Oil separation for refrigeration system  
An oil separation system for a refrigeration system having compressor, condenser-receiver and evaporator means, including an oil separator having a vortex separation chamber disposed in the...
4434626 Maintenance and protection devices for cooling plants  
In a single circuit refrigeration plant, a refrigerant gas stream while flowing in the circuit is compressed by a compressor, circulated from the pressure side of the compressor through a...
4434233 Method of testing oil for ionic contaminants  
A method of testing oil for ionic contaminants is disclosed. The method comprises isolating a sample of the oil to be tested and mixing it with an equal weight of distilled water to dissolve ionic...
4420946 Process for producing cold operated with phase separation  
Cold is produced in a phase separation cycle comprising the steps of (a) compressing a refrigerant fluid and dissolving it in a solvent, (b) cooling resultant solution to form two distinct liquid...
4419865 Oil cooling apparatus for refrigeration screw compressor  
The invention relates to improvements in a refrigeration system having an oil cooled screw compressor from which mixed oil and compressed refrigerant issues to an oil separator via a discharge...
4355960 Compressor refrigeration system utilizing thermally stable refrigeration lubricants containing alkyl polyhalophenyl ethers  
A compressor refrigeration system employing a halocarbon refrigerant, has a lubricant composition in contact with the halocarbon refrigerant over the expected temperature range of the system, the...
4326391 Rankine-cycle-engine-driven cooling-and-heating system  
In a Rankine-cycle-engine-driven cooling-and-heating system comprising a power generating cycle including at least an expander, an oil separator, a condenser and a generator and a...
4318279 Freezing or cooling plant comprising an oil separator  
A freezing or cooling plant comprises a compressor for compressing a refrigerant, and a condenser for condensing the refrigerant. Moreover, the plant comprises an apparatus to be cooled, e.g. a...
RE30869 Method of operating a refrigeration plant and a plant for performing the method  
A refrigeration plant including an oil-injected compressor, an oil separator, a condenser and an evaporator. The plant comprises means to introduce liquid refrigerant to the compression phase of...
4312187 Method and apparatus for separating oil from a refrigerant  
A method and apparatus is provided for the continuous separation of oil from the refrigerant in a vapor compression refrigeration apparatus. The separation is accomplished by centrifuging the...
4310338 Replaceable float oil separator  
A replaceable float oil separator, for installation in large refrigeration systems of the vapor compression type using refrigerant-immiscible lubrication oils, comprises a compact float assembly...
4307574 Air compressing system and process  
The invention relates to an air compressing system in which ambient air is drawn through a turbine driven flow-thru compressor into the intake of a primary compressor, and the hot effluent from the...
4280337 Low-side oil-separation and re-use system for ammonia-refrigeration apparatus  
A conventional ammonia refrigeration system is modified by adding thereto an automatic oil-separation and re-use system, which comprises a gravity-type separation tank installed between the bottom...
4275570 Oil cooling means for refrigeration screw compressor  
In a large refrigeration system comprising a screw compressor of controllably variable output, compressor lubricating oil, discharged from the compressor in a mixture with compressed refrigerant,...
4254637 Refrigeration system with refrigerant cooling of compressor and its oil  
In a refrigeration system wherein compressed refrigerant flows from a compressor discharge chamber successively through an oil separator and a condenser to a high pressure receiver, a minor portion...
4210001 Refrigeration system having improved heat transfer and reduced power requirement for various evaporative refrigerants  
A refrigeration system employing oil lubricated compressors has an improved arrangement for removing oil contaminations from the hot gas contaminated with oil from the compressor. This is done by...
4112701 Method and means for cooling the oil in a system including a compressor with oil supply, as well as such systems  
A gas compression system and method utilizing an oil-injected rotary compressor, an oil separator in the discharge line thereof, and an oil supply line between the oil separator and the working...
4091638 Cooling system for hermetic compressor  
A hermetic rotary refrigerant compressor is provided with means for handling the oil and refrigerant vapor mixture to provide sufficient cooling of the motor without external precoolers and related...
3945216 Refrigeration systems  
Vehicle air-conditioning and other refrigerator systems utilizing specified helical screw compressors and operated under specified conditions and using specified refrigerants and oils. Also...
3856493 ENERGY RECOVERY SYSTEM FOR OIL INJECTED SCREW COMPRESSORS  
The high heat content of the lubricating and sealing oil discharged from an oil injected screw compressor is transferred after separating the oil from the compressor discharge gas to the gas stream...
3850009 CLEANING OF PRESSURIZED CONDENSABLE GAS  
A compressor system such as a refrigerating system comprising a compressor for discharging a condensable gas in the gaseous phase thereof, means for introducing oil into the compressor and an oil...
3837175 REFRIGERATION SYSTEM HAVING IMPROVED HEAT TRANSFER AND REDUCED POWER REQUIREMENTS  
A refrigeration system employing oil-lubricated compressors has an improved arrangement for removing oil from the refrigerant, and by use of a liquid pump and with utilization of by-product heat...
3827249 PRESSURIZED REFRIGERANT RECIRCULATION SYSTEM WITH CONTROL MEANS  
A refrigeration apparatus having an accumulator-separator with a pair of pumping tanks which are sequentially operated by high pressure gas from the receiver for pumping liquid refrigerant to an...
3811291 METHOD OF OPERATING A REFRIGERATION PLANT AND A PLANT FOR PERFORMING THE METHOD  
A refrigeration plant including an oil-injected compressor, an oil separator, a condenser and an evaporator. The plant comprises means to introduce liquid refrigerant to the compression phase of...
3796053 LUBRICANT SEPARATION SYSTEM  
A vapor engine includes an expander, a lubricant storage zone, and a combination regenerative heat exchanger and lubricant separator. The combination device receives a mixture of lubricant and...
3778984 GAS LIQUID SEPARATOR FOR USE IN A REFRIGERATION SYSTEM  
A gas liquid separator for use in a refrigeration circuit having a rotary compressor in which oil is mixed with refrigerant as the latter is circulated through the refrigeration cycle, said...
3777509 OIL RETURN SYSTEM FOR REFRIGERATION APPARATUS  
Apparatus for assuring return of oil separated from refrigerant in a vapor cycle refrigeration system. Means are provided for positively effecting flow of oil from a lower pressure reservoir into a...
3768273 SELF-BALANCING LOW TEMPERATURE REFRIGERATION SYSTEM  
Extremely low temperatures, in the range of -40°F. to -300°F., are achieved in a single circuit compression refrigeration system which is capable of being operated by a conventional compressor...
3751936 OIL SEPARATOR APPARATUS AND METHOD FOR LOW MISCIBILITY REFRIGERANT SYSTEMS  
A process for removing oil contamination from refrigerent in a refrigeration system utilizing an oil lubricated, reciprocating piston type condenser unit. The system is characterized by use of...
3724231 SINGLE STAGE DRY CYLINDER COMPRESSOR HAVING AUTOMATIC OIL DRAIN FROM SUCTION CHAMBER TO CRANKCASE  
An automatic draining apparatus for draining the oil from a suction chamber to the crankcase of a single-stage refrigeration compressor. The apparatus includes a collecting tank having a float...
3721108 REFRIGERANT COOLED COMPRESSOR  
In a refrigerating system including a compressor, condenser, evaporator, and an oil cooler, a refrigerant cooling system for the compressor including a bypass line connected between the condenser...
3719057 TWO-STAGE REFRIGERATION SYSTEM HAVING CRANKCASE PRESSURE REGULATION IN HIGH STAGE COMPRESSOR  
A two-stage refrigeration system including a condensor, a receiver, an evaporator, a low-stage dry-wall compressor and a high-stage dry-wall compressor, the low-stage compressor including an...
3710590 REFRIGERANT COOLED OIL SYSTEM FOR A ROTARY SCREW COMPRESSOR  
A refrigeration system including a positive displacement rotary screw compressor, a condenser, an evaporator, an oil cooler and an oil separator including a sump connected in the compressor...
3633377 REFRIGERATION SYSTEM OIL SEPARATOR  
An oil separator for use in a refrigeration system, having a plurality of compressors and evaporators, receives the discharge of refrigerant and oil separately from each compressor to separate the...
3543880 TWO STAGE REFRIGERATION COMPRESSOR HAVING AUTOMATIC OIL DRAIN FOR THE FIRST STAGE SUCTION CHAMBER  
3534564 REFRIGERANT PURIFYING MEANS  
3520149 APPARATUS FOR SEPARATING AND REMOVING OIL CONTAINED IN CIRCULATING REFRIGERANT  
3494137 FLUID-OPERATED PUMP AND REFRIGERANT SYSTEM CONTAINING THE SAME  
3408828 Refrigeration system and system for separating oil from compressed gas  
Matches 101 - 150 out of 170 < 1 2 3 4 >