ClassID:

159155

F25B31/004 - page 2 - CPC Classification

Classification description:

Compressor arrangements; Lubrication oil recirculating arrangements

Recent Application in this class:
#301
20130091891
2013-04-18

Cascade refrigeration system with modular ammonia chiller units

#302
20130086937
2013-04-11

OIL CIRCULATION SYSTEM FOR A REFRIGERATION CHILLER

#303
20130061628
2013-03-14

CHILLER

#304
20130061616
2013-03-14

Multi-Connected Air Conditioner Unit and Method of Operating the Same

#305
20130025305
2013-01-31

Refrigeration cycle apparatus

#306
20130014537
2013-01-17

Refrigerator

#307
20130008194
2013-01-10

HEAT PUMP APPARATUS AND OPERATION METHOD FOR HEAT PUMP APPARATUS

#308
20130000339
2013-01-03

Air-conditioning apparatus with oil return in a transcritical cycle

#309
20120312034
2012-12-13

Refrigerating cycle apparatus and method for operating the same

#310
20120304685
2012-12-06

AIR CONDITIONER

#311
20120291464
2012-11-22

AIR CONDITIONER

#312
20120247139
2012-10-04

Piston operated bypass valve for a screw compressor

#313
20120192581
2012-08-02

Air conditioner using oil return operation based on outdoor air temperature

#314
20120180513
2012-07-19

Air-conditioning apparatus

#315
20120174615
2012-07-12

Air conditioner

#316
20120174614
2012-07-12

Air conditioner

#317
20120137723
2012-06-07

AIR CONDITIONER

#318
20120103003
2012-05-03

Air-conditioner and method of returning and cooling compressor oil

#319
20120055182
2012-03-08

CO2 REFRIGERATION SYSTEM

#320
20120023978
2012-02-02

Refrigerator and driving method thereof

#321
20120011872
2012-01-19

Device for separating lubricant from a lubricant-refrigerating gas mixture discharged from at least one refrigerant compressor

#322
20120006041
2012-01-12

Refrigerating device

#323
20110308273
2011-12-22

Refrigerating air-conditioning apparatus

#324
20110308272
2011-12-22

Refrigerating air-conditioning apparatus

#325
20110302943
2011-12-15

Heat pump system

#326
20110239667
2011-10-06

AIR CONDITIONER AND METHOD OF CONTROLLING THE SAME

#327
20110192187
2011-08-11

Refrigeration Cycle System and Automotive Air-Conditioning System Including the Refrigeration Cycle System

#328
20110174005
2011-07-21

REFRIGERATING APPARATUS

#329
20110162746
2011-07-07

Oil balance device, a compressor unit and a method for performing an oil balance operation between a plurality of compressor units

#330
20110155816
2011-06-30

Air conditioner having plural compressors with oil bypass unit

#331
20110154840
2011-06-30

Refrigerating apparatus

#332
20110138831
2011-06-16

REFRIGERATION CYCLE APPARATUS

#333
20110132026
2011-06-09

Fluid circuit and refrigeration cycle apparatus using the same

#334
20110120154
2011-05-26

Passive oil level limiter

#335
20110083450
2011-04-14

Refrigerant System With Stator Heater

#336
20110036110
2011-02-17

REFRIGERATION APPARATUS

#337
20100326125
2010-12-30

REFRIGERATION SYSTEM

#338
20100307173
2010-12-09

Compressor and oil-cooling system

#339
20100300141
2010-12-02

Refrigeration apparatus

#340
20100275634
2010-11-04

REFRIGERATION APPARATUS

#341
20100251736
2010-10-07

REFRIGERANT CIRCUIT AND METHOD FOR MANAGING OIL THEREIN

#342
20100247331
2010-09-30

Set of piston compressors and methods for oil compensation

#343
20100242529
2010-09-30

REFRIGERATION APPARATUS

#344
20100218522
2010-09-02

Oil return system and method for active charge control in an air conditioning system

#345
20100206000
2010-08-19

Air conditioner and method of controlling the same

#346
20100196170
2010-08-05

System and method for monitoring and controlling oil return to compressor

#347
20100186439
2010-07-29

Fluid machine and refrigeration cycle apparatus

#348
20100170271
2010-07-08

REFRIGERANT SYSTEM

#349
20100154465
2010-06-24

Refrigeration apparatus

#350
20100147018
2010-06-17

Refrigeration apparatus

#351
20100146994
2010-06-17

Refrigeration apparatus and method for controlling the same

#352
20100126211
2010-05-27

Refrigerating apparatus

#353
20100123016
2010-05-20

System and method for oil return in an HVAC system

#354
20100101270
2010-04-29

Hermetic compressor and refrigeration cycle having the same

#355
20100101268
2010-04-29

REFRIGERATION SYSTEM

#356
20100089082
2010-04-15

Air conditioner

#357
20100064700
2010-03-18

Refrigerant system oil accumulation removal

#358
20100050673
2010-03-04

OIL RETURN ALGORITHM FOR CAPACITY MODULATED COMPRESSOR

#359
20100031695
2010-02-11

Refrigerating device

#360
20090308088
2009-12-17

Air conditioner

#361
20090277213
2009-11-12

Refrigerating apparatus

#362
20090272137
2009-11-05

Oil return for a direct exchange geothermal heat pump

#363
20090229301
2009-09-17

REFRIGERATION SYSTEM

#364
20090218077
2009-09-03

Air-conditioner with multi-stage compressor and phase separator

#365
20090165480
2009-07-02

Refrigeration system

#366
20090133435
2009-05-28

Refrigerating Air-Conditioning Apparatus

#367
20090126376
2009-05-21

Oil Separation in a Cooling Circuit

#368
20090107173
2009-04-30

Air conditioner

#369
20090107170
2009-04-30

Air conditioner having plural compressors and plural oil separators

#370
20090107169
2009-04-30

Air conditioner

#371
20090071187
2009-03-19

Refrigerating apparatus

#372
20090064709
2009-03-12

Dual compressor air conditioning system with oil level regulation

#373
20090035160
2009-02-05

Hermetic compressor and refrigeration cycle device having the same

#374
20090031753
2009-02-05

COMPRESSOR

#375
20080317619
2008-12-25

Tandem compressor system and method

#376
20080314055
2008-12-25

Refrigerant system unloading by-pass into evaporator inlet

#377
20080310781
2008-12-18

Method for lubricating a rolling element bearing by means of an ultra low viscosity volatile fluid, and bearing arrangement

#378
20080282713
2008-11-20

Oil Management System

#379
20080271477
2008-11-06

Compressor System with Controlled Lubricant Reclaim

#380
20080236189
2008-10-02

Air conditioner with oil recovery function

#381
20080210601
2008-09-04

De-gassing lubrication reclamation system

#382
20080209924
2008-09-04

AIR CONDITIONER AND CONTROL METHOD THEREOF

#383
20080148746
2008-06-26

Multi-Function Multichannel Heat Exchanger

#384
20080087030
2008-04-17

Water-cooled air conditioner

#385
20080087028
2008-04-17

Air conditioner

#386
20080087027
2008-04-17

Water-cooled air conditioner

#387
20070245768
2007-10-25

Refrigeration System

#388
20070245752
2007-10-25

Refrigerating Apparatus and Air Conditioner

#389
20070214827
2007-09-20

Oil-free refrigerant circulation technology for air-conditioning and refrigeration system

#390
20070130978
2007-06-14

Air conditioner

#391
20070095098
2007-05-03

Expansion valve for rear seat air conditioner

#392
20070000276
2007-01-04

Thermal compensation system and device there of in heat pump and refrigeration system

#393
20060277930
2006-12-14

Lubricant return schemes for use in refrigerant cycle

#394
20060266074
2006-11-30

Heat pump system with multi-stage compression

#395
20060266063
2006-11-30

Heat pump system with multi-stage compression

#396
20060185376
2006-08-24

Freezer device

#397
20060179867
2006-08-17

Multi-air conditioner capable of performing simultaneous cooling and heating

#398
20060123834
2006-06-15

Air conditioner

#399
20060107686
2006-05-25

Compressor oil recovering apparatus and multi-unit air conditioner equiped with the same

#400
20060101845
2006-05-18

Compressor oil recovering apparatus and multi-unit air conditioner equiped with the same

#401
20060080990
2006-04-20

Air conditioner

#402
20060065011
2006-03-30

Vapor-compression refrigerant cycle system with ejector

#403
20060042307
2006-03-02

Oil control system for a refrigeration system

#404
20060016203
2006-01-26

Refrigerating cycle device capable of ensuring oil return

#405
20050284156
2005-12-29

Lubricant return schemes for use in refrigerant cycle

#406
20050279111
2005-12-22

Air conditioner and method for performing oil equalizing operation in the air conditioner

#407
20050257565
2005-11-24

Multi-air conditioner

#408
20050183447
2005-08-25

Refrigerant cycling device

#409
20050178146
2005-08-18

Supercritical refrigeration cycle

#410
20050172662
2005-08-11

Refrigerant cycling device

#411
20050172661
2005-08-11

Compressor

#412
20050166616
2005-08-04

Heater cycling for improved oil return

#413
20050150246
2005-07-14

Refrigerating equipment

#414
20050144977
2005-07-07

Refrigerant cycling device

#415
20050144973
2005-07-07

Compressor having a throttled-return passage connecting an oil accumulator to a seal container

#416
20050144972
2005-07-07

Compressor

#417
20050144964
2005-07-07

Refrigerant cycling device

#418
20050103048
2005-05-19

Air-conditioner having multiple compressors

#419
20050103045
2005-05-19

Air conditioner

#420
20050097918
2005-05-12

Supermarket refrigeration system and associated methods

#421
20050092000
2005-05-05

System and method for recycling oil in air conditioner

#422
20050081559
2005-04-21

Accumulator with pickup tube

#423
20050081537
2005-04-21

Apparatus for preventing liquid refrigerant accumulation of air conditioner and method thereof

#424
20050076657
2005-04-14

Apparatus and method for controlling oil of air conditioner

#425
20050072183
2005-04-07

Oil equalizing system for multiple compressors

#426
20050066684
2005-03-31

Compression mechanism for refrigeration system

#427
20050028552
2005-02-10

Vapor compression type refrigerating machine

#428
16056082
2020-03-31

Method and apparatus for measuring and improving efficiency in refrigeration systems