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| Number | Title | Issue Date |
| 8099976 | Oil-returning device and accumulator The present invention provides an oil-returning device and a accumulator, the oil-returning device including an outlet pipe and a filtering component, the outlet pipe having an bent arc portion which is provided with a positioning hole, the filtering component inclu... | 01/24/2012 |
| 8037712 | Hermetic compressor and refrigeration cycle having the same A hermetic compressor is provided, including a casing, having a suction pipe and discharge pipe connected thereto, a driving motor installed within the casing, a compressing device installed within the casing and operated by the driving motor to form compression cha... | 10/18/2011 |
| 7918106 | Refrigeration system A refrigerant circuit (15) is provided with a low-pressure stage oil separator (26) for separating refrigerating machine oil out of refrigerant discharged from a low-pressure stage compressor (21) and returning it to the suction side of the low-... | 04/05/2011 |
| 7810351 | Multiple outlet vertical oil separator An oil separator for separating oil from a refrigerant gas and oil mixture on the high side of a refrigeration/chiller system comprising, a housing having an upper chamber with an inlet for the refrigerant gas and oil mixture, and having a refrigerant gas outlet the... | 10/12/2010 |
| 7712329 | Oil balance system and method for compressors A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfe... | 05/11/2010 |
| 7690216 | Oil separator for air conditioners Disclosed herein is an oil separator for air conditioners that is capable of separating oil from refrigerant. The oil separator comprises a shell having a cylindrical space defined therein, a refrigerant introduction pipe for introducing refrigerant into the shell, ... | 04/06/2010 |
| 7472562 | Compressor and mechanism for separating lubricating liquid A refrigerant go-around passage is provided in a housing of a compressor. The passage takes in refrigerant discharged from a compression mechanism into the housing, makes the refrigerant go around an axial line of the compressor and finally returns the refrigerant t... | 01/06/2009 |
| 7386994 | Oil separator and cooling-cycle apparatus using the same Disclosed herein are an oil separator and a cooling-cycle apparatus using the oil separator. To a casing of the separator is connected an inflow tube to supply gaseous refrigerant and oil into the casing for allowing them flowing in a swirl pattern, thereby being se... | 06/17/2008 |
| 7360373 | Vehicle air-conditioning system An evaporator placed in a vehicle compartment includes a meandering flattened pipe, a header joined with one end of the flattened pipe for introducing a compressed refrigerant from a compressor placed in an engine room, and a header joined with the other end of the ... | 04/22/2008 |
| 7310970 | Refrigerant/oil separator An apparatus for separating an oil from a refrigerant has a housing, an inlet conduit for receiving a refrigerant/oil mixture, a separator medium, a refrigerant outlet conduit, and an oil outlet conduit. The inlet conduit has an inlet external to the housing and an ... | 12/25/2007 |
| 7296427 | Hybrid compressor device for a vehicle In a hybrid compressor for a vehicle where a vehicle engine is stopped when the vehicle is temporally stopped, a pulley, a motor and a compressor can be driven in independent from each other, and are connected to a sun gear, planetary carriers and a ring gear of a p... | 11/20/2007 |
| 7285149 | Oil separator for vehicle air system An oil separator for use in a vehicle air system includes a recycling valve for removing coalesced oil. The recycling valve may include a piston movable in a cylinder in response to a control air pressure to open the recycling valve and thus drain coalesced oil from... | 10/23/2007 |
| 7281912 | Compressor having a safety device being built in at least one of the screw plugs of the oil-separator A compressor is provided with an oil separator for separating part of the lubricating oil contained in the compressed refrigerant, path arrangement for connecting a separation chamber of the separator and a delivery port of the compressed refrigerant, the path arran... | 10/16/2007 |
| 7249467 | Gas-liquid separator for refrigerant cycle system A gas-liquid separator (accumulator) is arranged at a refrigerant suction side of a compressor of a refrigerant cycle system mounted in a vehicle. The gas-liquid separator includes a gas-liquid separation portion for separating refrigerant into gas refrigerant and l... | 07/31/2007 |
| 7246507 | Air conditioner Provided is an air conditioner which has a separator with an oil tank for storing extra oil; a first oil return tube opening above the surface of the extra oil; and a second oil return tube opening below the surface of the extra oil. When the refrigeration cycle can... | 07/24/2007 |
| 7225627 | Vapor compression system and method for controlling conditions in ambient surroundings A vapor compression system including an evaporator, a compressor, and a condenser interconnected in a closed-loop system and a method of operating such a system. The method includes the conversion of expanded liquid heat transfer fluid from a liquid form to a high q... | 06/05/2007 |
| 7222491 | Air conditioner and method for performing oil equalizing operation in the air conditioner An air conditioner including an outdoor unit including a first compressor and a second compressor connected in parallel to the first compressor, an outdoor unit connected in parallel to the outdoor unit, the outdoor unit including a first compressor and a second com... | 05/29/2007 |
| 7219503 | Quick-change coalescent oil separator A refrigeration system including a coalescent oil separator for removing oil from a refrigerant gas and oil mixture discharged from a compressor. Upon a pressure condition being exceeded a directional flow valve opens to allow the refrigerant gas and oil mixture to ... | 05/22/2007 |
| 7204098 | Oil separation structure for refrigerant compressor The present invention relates to a structure for separating oil from a refrigerant gas containing the oil. The refrigerant gas is discharged from a refrigerant compressor which forms a part of refrigerating cycle to an external refrigerant circuit. The oil separatio... | 04/17/2007 |
| 7186099 | Inclined scroll machine having a special oil sump A scroll-type compressor is provided in an inclined or inverted position with an oil sump disposed adjacent to a gas inlet of the scroll wraps to allow droplets of oil to be entrained in the gas being compressed so that the oil droplets in the gas can cool the scrol... | 03/06/2007 |
| 7181926 | Oil separator and muffler structure An oil separator-muffler for a compressor includes an inner chamber with an oil accumulation region and a wall positioned in the inner chamber. The wall defines a separator region and has an impingement surface. The arrangement of the wall in the inner chamber defin... | 02/27/2007 |
| 7174725 | Compressor, method for manufacturing the compressor, defroster of refrigerant circuit, and refrigeration unit There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engag... | 02/13/2007 |
| 7168264 | Refrigerant cycling device A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element.... | 01/30/2007 |
| 7152426 | Thermal control systems for process tools requiring operation over wide temperature ranges A system and method for maintaining the temperature of a thermal transfer fluid at a selectable level within a wide temperature range, so as to operate a process tool in a chosen mode employing at lease two cascaded stages, each operating with a different fluid in a... | 12/26/2006 |
| 7137273 | Air chiller unit The invention provides an improved air chiller unit mounted on an aircraft for sending cooled air to service carts used for serving meals. A compressor 20 of a refrigerant equipped in an air chiller unit has a motor 210 and a rotary compressor 220 | 11/21/2006 |
| 7114347 | Closed cycle refrigeration system and mixed component refrigerant A closed cycle refrigeration system in conjunction with specific mixed or multiple component refrigerant fluids to produce temperatures in the range of 230° K to 70° K. The mixed component refrigerant can be blended from flammable or a non-flammable fluid componen... | 10/03/2006 |
| 7104076 | Lubricant return schemes for use in refrigerant cycle A control algorithm is developed which takes corrective action in the event that system conditions indicate there may be an inadequate flow of lubricant in the system. In particular, if a discharge pressure is below a predetermined amount or if the suction modulatio... | 09/12/2006 |
| 7082785 | Oil separator for vapor compression system compressor A transcritical vapor compression system includes a compressor assembly that includes an oil separator for separating oil from refrigerant. The oil separator is disposed between a motor and a compression chamber in a sub-critical portion of the vapor compression sys... | 08/01/2006 |
| 7082774 | Compressor oil removal in ammonia refrigeration system Automatic oil removal from an ammonia evaporator/low pressure vessel in a refrigeration system is disclosed. A liquid refrigerant level controller is utilized to drain the oil. The controller works under the principle of fluid thermal conductivity. Oil having lower ... | 08/01/2006 |
| 7076968 | Refrigerant cycling device A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element.... | 07/18/2006 |
| 7069740 | Accumulator and air conditioning system using the same An improved accumulator is disclosed, which includes a body having an empty space therein; an inlet tube inserted into the inside of the body from a top thereof, downwardly, for an inflow of a refrigerant to the inside of the body; an outlet tube inserted into the i... | 07/04/2006 |
| 7051551 | Compressor A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element.... | 05/30/2006 |
| 7032410 | Compressor systems for use with smokeless lubricant A compression system including a compressor driven by a motor, an optional accumulator, a liquid/gas separator, heat exchangers in the form of a condenser and an evaporator, expansion valves and conduit in the form of piping to connect these components together. The... | 04/25/2006 |
| 7013672 | Refrigerant cycling device A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element.... | 03/21/2006 |
| 6993932 | Refrigerant cycle system A refrigerant cycle system in which the arrangement of a connecting pipe for connection between a compressor and an accumulator is improved effectively to recover oil collected in the accumulator to the compressor. The accumulator is installed to be separate from th... | 02/07/2006 |
| 6968713 | Desiccant cup with integral filter A desiccant container for use in an accumulator or a receiver/dryer of a vehicle includes at least one integral mesh screen for preventing small particles from passing therethrough. Preferably, the container includes two integral mesh screens, one forming an upper s... | 11/29/2005 |
| 6962059 | Refrigerating cycle device To prevent heat transfer inhibition and an increase in pressure loss due to refrigerating machine oil discharged into a cycle, and to provide a compact and highly efficient refrigerating cycle apparatus using carbon dioxide gas (CO2). In a refrigerating c... | 11/08/2005 |
| 6959557 | Apparatus for the storage and controlled delivery of fluids A vessel for containing a refrigerant fluid in a vapor compression system. The vessel includes a housing defining a fixed interior volume and an internal structure subdividing the interior volume into a storage chamber and a displacement chamber. The storage chamber... | 11/01/2005 |
| 6948335 | Compression mechanism for refrigeration system The present invention provides an oil equalizing circuit for a refrigeration system provided with a plurality of compression mechanisms, the oil equalizing circuit being capable of supplying sufficient oil to the compressors that are running during partial load oper... | 09/27/2005 |
| 6948916 | Piping layout for multiple compressor system A multiple hermetic compressor assembly comprising a first compressor and an adjacent, second compressor interconnected by a hot gas pressure discharge manifold, a suction gas pressure equalization manifold, a suction manifold and an oil equalization manifold, the m... | 09/27/2005 |
