EP1818629B1 - Compressor cooling system - Google Patents
Compressor cooling system Download PDFInfo
- Publication number
- EP1818629B1 EP1818629B1 EP07250507.6A EP07250507A EP1818629B1 EP 1818629 B1 EP1818629 B1 EP 1818629B1 EP 07250507 A EP07250507 A EP 07250507A EP 1818629 B1 EP1818629 B1 EP 1818629B1
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- EP
- European Patent Office
- Prior art keywords
- compressor
- flow
- refrigerant
- drive member
- cool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/006—Cooling of compressor or motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
- The present invention relates to a cooling system for use in a compressor system. More particularly, the present invention relates to a refrigeration system configured to cool components of a compressor system.
- Compressor assemblies typically include a compressor that is driven by a drive member to create a flow of compressed fluid. The process of creating the flow of compressed fluid can produce a considerable amount of heat. Typically, the flow of compressed fluid exits the compressor at a high temperature. Therefore, the flow of compressed fluid is cooled before it is utilized. Furthermore, the heat generated by the compression process also raises the temperature of a fluid, such as oil, utilized by the compressor for lubricating, sealing and cooling. In addition, other components of the compressor system such as, the drive member, a variable frequency drive, and a control system can in some circumstances create undesirable amounts of heat that can damage these components or shorten their operating lives.
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US 2 453 823 discloses an example of providing low temperature refrigeration by the use of a plurality of condensing units of the compressor-condenser type, connected in series. - The document
EP0979670 discloses an apparatus for removing moisture from a gas. - The invention provides a compressor system that includes a compressor that is operable to produce a flow of compressed fluid and a refrigeration system that includes an evaporator. The evaporator passes a flow of refrigerant therethrough and is operable to cool the flow of compressed fluid. The compressor system also includes a drive member that is coupled to the compressor and is operable to drive the compressor. A cooling passage extends from a point downstream of the evaporator to a point upstream of the compressor and at least a portion of the cooling passage is in thermal exchange relationship with the drive member.
- The invention provides a method of operating a fluid compression system that includes coupling a compressor to a drive member and operating the drive member to produce a corresponding operation of the compressor to produce a flow of compressed fluid. The method also includes passing a flow of refrigerant through an evaporator to cool the flow of compressed fluid and passing the flow of refrigerant from the evaporator into a return line. A portion of the flow of refrigerant is diverted from the return line to the drive member to cool the drive member.
- In another embodiment, the invention provides a fluid compression system that includes a plurality of compressors operable to provide a flow of compressed fluid and a plurality of drive members. Each drive member is associated with one of the compressors and is operable to drive the compressor. The system also includes a refrigeration system that includes a refrigeration compressor, operable to compress and discharge a flow of refrigerant. The flow of refrigerant is in thermal exchange relationship with the flow of compressed fluid such that the flow of refrigerant cools the flow of compressed fluid. A cooling passage is positioned to receive a portion of the flow of refrigerant. At least a portion of the cooling passage is positioned in thermal exchange relationship with one of the plurality of drive members to cool one of the plurality of drive members.
- Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.
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Fig. 1 is a schematic view of a compressor system embodying the present invention; -
Fig. 2 is a schematic view of a portion of the compressor system ofFig. 1 ; and -
Fig. 3 is a schematic view of another compressor system embodying the invention. - Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other examples and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.
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Fig. 1 schematically illustrates acompressor system 10 that includes acompressor assembly 12 and arefrigeration system 14. The illustratedcompressor assembly 12 includes acompressor 16, adrive member 18, a variable frequency drive (VFD) 20 and acontrol system 22. - The
compressor 16 can be any suitable compressor design, such as a rotary screw compressor, a centrifugal compressor, or a reciprocating compressor. The illustratedcompressor 16 includes acompressor outlet 24 and an after-cooler 26. Thecompressor outlet 24 is in fluid communication with thecompressor 16 and the after-cooler 26. Thecompressor 16 also includes anoil cooler 28 and anoil passage 30. Theoil passage 30 is in fluid communication with thecompressor 16 and theoil cooler 28. While the illustratedcompressor 16 includes theoil cooler 28 and the after-cooler 26, in other constructions thecompressor 16 may omit one or both of theoil cooler 28 and the after-cooler 26. - Furthermore, while the illustrated
compressor 16 is a single stage compressor, in other constructions, thecompressor 16 can be a multi-stage compressor and can include an inter-cooler located between each stage. The inter-cooler is configured to cool the air or working fluid compressed by thecompressor 16. In this arrangement, the output of the first compressor stage is directed to the inlet of the second compressor stage. This arrangement allows for a greater pressure increase, which may be necessary in some application. - Before proceeding, it should be noted that the term "passage" and "line" as used herein should be interpreted broadly. Specifically, the terms "passage" and "line" should be interpreted to include but not limited to, conduits, channels, tubes, pipes, valves, flanges, hoses, and the like. Thus, a "passage" or "line" is essentially any structural element that is able to direct fluid between first and second points.
- Referring to
Fig. 1 , thedrive member 18 is coupled to thecompressor 16, and in one construction, includes a motor, such as a variable speed motor. In other constructions, thedrive member 18 can include other suitable drive members, such as a turbine, an internal combustion engine, a diesel engine and the like. - The
refrigeration system 14 includes arefrigerant compressor 32, acondenser 34, anexpansion device 36, anevaporator 38 and areturn line 40. As schematically illustrated inFig. 1 , therefrigerant compressor 32 is fluidly coupled to thecondenser 34. Thecondenser 34 is fluidly coupled to theexpansion device 36 and theexpansion device 36 is fluidly coupled to theevaporator 38. Theevaporator 38 is in thermal exchange relationship with thecompressor outlet 24 downstream of the after-cooler 26 to cool the air or working fluid compressed by thecompressor 16. Theevaporator 38 includes anevaporator outlet 42 that is fluidly coupled to thereturn line 40. Thereturn line 40 fluidly couples theevaporator outlet 42 to therefrigerant compressor 32 to return refrigerant to therefrigerant compressor 32 and complete the cycle. While the illustratedrefrigeration system 18 includes asingle refrigerant compressor 32,condenser 34,expansion device 36,evaporator 38, andreturn line 40, in other constructions, therefrigeration system 18 can includemultiple refrigerant compressors 32,condensers 34,expansion devices 36,evaporators 38, andreturn lines 40, as may be desired. In addition, as one of ordinary skill in the art will realize, refrigeration systems may include other components not illustrated inFig. 1 . These additional components include tanks, valves, sensors, separators, and the like. As such, the refrigeration system should not be limited to the components illustrated inFig. 1 . - As illustrated in
Fig. 1 , therefrigeration system 14 defines a portion of anair dryer system 44. Theair dryer system 44 includes therefrigerant compressor 32, thecondenser 34, theexpansion device 36 and theevaporator 38. - With continued reference to
Fig. 1 , acooling passage 46 is in fluid communication with thereturn line 40 to draw a portion of the refrigerant from therefrigeration system 14 after the refrigerant has passed through theevaporator 38. It should be understood that thecooling passage 46 can connect to thereturn line 40 at any point between the evaporator 38 and therefrigerant compressor 32. In preferred constructions, thecooling passage 46 may include a pipe, a tube, or other conduit. - The
cooling passage 46 may include a plurality ofportions 48 that are in thermal exchange relationship with one or more of the after-cooler 26, theoil cooler 28, thedrive member 18, theVFD 20, thecontrol system 22, or other components within the compressor system (e.g., gearbox). Each of the plurality ofportions 48 includes a flow path that directs a portion of refrigerant to a component to be cooled. In preferred arrangements, each of the plurality ofportions 48 includes a heat exchanger that allows the flow of refrigerant to cool the component to be cooled with greater efficiency. - As schematically illustrated in
Fig. 2 , in one construction, one of the plurality of coolingpassage portions 48 includes aheat exchanger 50 configured to allow the flow of refrigerant to cool thedrive member 18. In such a construction, afan 51 is driven by thedrive member 18 or a separate fan drive member, to move air across theheat exchanger 50. The air that passes across theheat exchanger 50 is cooled and then passes across thedrive member 18 to cool thedrive member 18. In one construction the separate fan drive member can be an electric motor, and in such a construction, the motor can be selectively turned off and on to control the amount of air that moves across theheat exchanger 50 and thedrive member 18. A temperature switch, or other suitable device, can be used to start and stop the fan drive member when thedrive member 18 has reached predetermined temperatures. For example, the temperature switch can be configured to turn on the fan drive member when the temperature of thedrive member 18 exceeds a predetermined temperature, and the temperature switch can be configured to turn off the fan drive member when the temperature of thedrive member 18 falls below a predetermined temperature. - The
heat exchanger 50 and thefan 51 illustrate just one possible arrangement of a thermal exchange relationship between one of thecooling passage portions 48 and thedrive member 18. It should be understood that any suitable thermal exchange relationship between the plurality of coolingpassage portions 48 and the after-cooler 26, theoil cooler 28, thedrive member 18, theVFD 20, or thecontrol system 22 can be utilized. - A valve, or other suitable control device, can be disposed in the
cooling passage 46 or in thereturn line 40 to provide selective fluid communication between theevaporator outlet 42 and thecooling passage 46. In other constructions, a valve may be disposed in any one of, or each of the plurality of coolingpassage portions 48 to provide selective fluid communication between theevaporator outlet 42 and thecooling passage portion 48. -
Fig. 3 illustrates an alternative construction in which a compressor system 10' includes a plurality of compressor assemblies 12' and a refrigeration system 14'. Although three compressor assemblies 12' are illustrated, it should be understood two compressor assemblies or four or more compressor assemblies can be utilized as desired. - As schematically illustrated in
Fig. 3 , each of the compressor assemblies 12' includes a compressor 16'. The compressors 16' can be any suitable compressor design, such as rotary screw compressors, centrifugal compressors, reciprocating compressors, or any combination thereof. The illustrated compressors 16' each include acompressor outlet 24' that is fluidly coupled to anoutlet header 54. In other constructions, thecompressor outlets 24' may not be fluidly coupled to thecommon outlet header 54, and theoutlets 24' can remain independent to their respective compressor 16'. - A drive member 18', an after-cooler 26', an oil cooler 28', a VFD 20' and a control system 22' may be associated with each one of, or all of the plurality of compressors 16'. In another construction, each of the compressor assemblies 12' may omit one or more of the after-cooler 26', the oil cooler 28', the VFD 20' and/or the control system 22'. In these constructions one control system, a single oil cooler, or a single after-cooler may function to control the entire compressor system 10', cool all of the system oil, or cool all of the compressed air (or other fluid) discharged by the compressors 16'.
- It should be understood that the remainder of the compressor system 10' illustrated in
Fig. 3 , including the refrigeration system 14', is substantially the same as the compressor system 10' illustrated inFig. 1 . Therefore, similar items have been given similar reference numbers. - The operation of the
compressor systems 10, 10' ofFigs. 1 and3 are similar in many ways. Therefore, only the operation of thecompressor system 10 ofFig. 1 will be discussed in detail. In operation, thedrive member 18 drives thecompressor 16 to produce a flow of compressed fluid, typically air. The flow of compressed fluid exits thecompressor 16 and passes to thecompressor outlet 24. - The
compressor outlet 24 directs the flow of compressed fluid to the after-cooler 26 that is configured to cool the flow of compressed fluid. The flow of compressed fluid exits the after-cooler 26 and flows to theevaporator 38 that defines a portion of theair dryer system 44. Theevaporator 38 is configured to further cool the flow of compressed fluid to allow theair dryer 44 to reduce the amount of moisture contained within the flow of compressed fluid. The flow of compressed fluid exits theevaporator 38 and flows through the remainder of theair dryer 44 before being passed to equipment that utilizes the flow of compressed fluid. - The
VFD 20 operates to vary the rotational speed (i.e. revolutions per minute) of the associateddrive member 18 in response to one or more control signals. Changing the rotational speed of thedrive member 18 results in a corresponding change in the rotational speed of thecompressor 16. By varying the rotational speed of thecompressor 16, the volume of compressed fluid discharged by thecompressor 16 can be varied. - The
control system 22 controls the operation of thecompressor assembly 12. For example, thecontrol system 22 may control the loading and unloading of thecompressor 16 or may cycle thecompressor 16 on and off. Thecontrol system 22 may also monitor various operating parameters of thecompressor assembly 12, such as an outlet fluid pressure, an oil temperature, an outlet fluid temperature, etc. In addition, thecontrol system 22 controls theVFD 20 to control the rotational speed of thecompressor 16 and the volume of compressed fluid discharged by thecompressor 16. - A flow of oil is utilized by the
compressor 16 to lubricate and cool components of thecompressor 16, such as screw rotors and bearings. During operation of thecompressor 16, the temperature of the flow of oil can increase and it may be desirable to cool the flow of oil. In one construction, the flow of oil exits thecompressor 16 through theoil passage 30 and is passed to theoil cooler 28. Theoil cooler 28 cools the flow of oil and then theoil passage 30 directs the flow of oil back to thecompressor 16 to be re-used to cool and lubricate the compressor components. - The
refrigeration system 14 is operable to produce a cool flow of refrigerant. The flow of refrigerant may include any suitable refrigerant, such as argon or FREON. Therefrigeration compressor 32 is configured to create a compressed flow of refrigerant that exits therefrigeration compressor 32 and passes to thecondenser 34. Thecondenser 34 removes heat from the flow of refrigerant, thereby at least partially condensing the flow of refrigerant. Next, the flow of refrigerant enters theexpansion device 36 where it is expanded, thereby causing a reduction in the pressure and temperature of the flow. The expanded flow of refrigerant exits theexpansion device 36 and passes to theevaporator 38 where the flow of refrigerant is in thermal exchange relationship with the flow of compressed fluid, such that the flow of refrigerant cools the flow of compressed fluid. - The flow of refrigerant exits the
evaporator 38 through theevaporator outlet 42 and flows to thereturn line 40. A portion of the flow of refrigerant is diverted from thereturn line 40 to thecooling passage 46. In thecooling passage 46, the portion of the flow of refrigerant can be further diverted into portions that are passed to the plurality of coolingpassage portions 48. One of the plurality of coolingpassage portions 48 is in thermal exchange relationship with thedrive member 18 and the flow of refrigerant within thecooling passage portion 48 is operable to cool thedrive member 18. Another one of thecooling passage portions 48 may be in thermal exchange relationship with the after-cooler 26, such that the flow of refrigerant is operable with the after-cooler 26 to cool the flow of the compressed fluid. Yet anothercooling passage portion 48 may be in thermal exchange relationship with the oil-cooler 28, such that the flow of refrigerant is operable with the oil-cooler 28 to cool the flow of oil. Thecooling passage portions 48 may also be in thermal exchange relationship with theVFD 20 and thecontrol system 22, such that the flows of refrigerant within thecooling passage portions 48 are operable to cool theVFD 20 and thecontrol system 22. In other constructions, one of thecooling passage portions 48 can be in thermal exchange relationship with the inter-cooler or inter-coolers that are configured to cool the flow of compressed fluid between each stage of compression. - It should be understood that although the illustrated
compressor assembly 12 includes the after-cooler 26, the oil-cooler 28, thedrive member 18, theVFD 20 and thecontrol system 22 all in thermal exchange relationship withportions 48 of thecooling passage 46, it is not necessary for all of these components to be in thermal exchange relationship with thecooling passage 46. For example, in one construction the oil-cooler 28 can be air cooled and therefore, theoil cooler 28 may not be in thermal exchange relationship with thecooling passage 46. In yet another construction, the after-cooler 26, the oil-cooler 28, theVFD 20 and thecontrol system 22 are all air cooled and only thedrive member 18 is in thermal exchange relationship with thecooling passage 46. Thus, as one of ordinary skill will realize, any one or combination of the components can be cooled using therefrigeration system 14 described herein. - After the portions of the flow of refrigerant complete the thermal exchange relationship with the after-
cooler 26, theoil cooler 28, thedrive member 18, theVFD 20 and/or thecontrol system 22, the portions of the flow of refrigerant are passed into thereturn line 40. Thereturn line 40 collects the portions of the flow of refrigerant, along with the portion of the flow of the refrigerant that was not passed through thecooling passage 46, and returns the flow of refrigerant back to therefrigerant compressor 32. The flow of refrigerant returned to therefrigerant compressor 32 repeats the refrigeration process described above to create the cool flow of refrigerant. - Thus, the invention provides, among other things, a
compressor system 10 that includes acompressor 16, adrive member 18 and arefrigeration system 14. Therefrigeration system 14 operates as part of anair dryer 44 to dry the compressed fluid exiting thecompressor 16 and is also operable to cool other components such as thedrive member 18, avariable frequency drive 20, acontrol system 22, an after-cooler 26, and/or anoil cooler 28.
Claims (12)
- A compressor system (10) comprising:a first compressor (16) operable to produce a flow of compressed fluid including a quantity of moisture;a dryer (44) including a refrigeration system (14) including an evaporator (38) and a refrigerant compressor (32) that is separate from the fluid compressor and operable to produce the flow of refrigerant, the evaporator passing a flow of refrigerant therethrough and operable to cool the flow of compressed fluid such that the dryer (44) reduces the quantity of moisture within the flow of compressed fluid;a drive member (18) coupled to the first compressor (16) and operable to drive the first compressor (16), characterized bya cooling passage (46) extending from a point downstream of the evaporator to a point upstream of the refrigerant compressor (32), at least a portion (48) of the cooling passage in thermal exchange relationship with the drive member (18).
- The compressor system (10) of claim 1, wherein the drive member (18) includes a motor.
- The compressor system (10) of claim 2, wherein the drive member (18) includes a variable frequency drive (20), and wherein at least a portion (48) of the flow of refrigerant within the cooling passage (46) is operable to cool at least one of the motor and the variable frequency drive.
- The compressor system (10) of claim 1, wherein the first compressor (16) includes an oil cooler (28), and wherein at least a portion (48) of the flow of refrigerant within the cooling passage (46) passes through the oil cooler to cool a flow of oil.
- The compressor system (10) of claim 1, wherein the first compressor (16) includes a control system (22), and wherein at least a portion (48) of the flow of refrigerant within the cooling passage (46) is operable to cool the control system.
- The compressor system (10) of claim 1, further comprising a heat exchanger (50) positioned within the cooling passage (46), at least a portion (48) of the flow of refrigerant within the cooling passage passing through the heat exchanger to cool the drive member (18).
- A method of operating a fluid compression system, the method comprising:coupling a first compressor (16) to a drive member (18);operating the drive member to produce a corresponding operation of the first compressor to produce a flow of compressed fluid including a quantity of moisture;operating a refrigerant compressor (32) to produce a flow of refrigerant;passing the flow of refrigerant through an evaporator (38) to cool the flow of compressed fluid and to reduce the quantity of moisture within the flow of compressed fluid;passing the flow of refrigerant from the evaporator to a return line (40);diverting a portion (48) of the flow of refrigerant from the return line to the drive member to cool the drive member (18).
- The method of claim 7, wherein the drive member (18) includes a motor.
- The method of claim 7, further comprising directing a portion (48) of the refrigerant from the return line (40) to an oil cooler (28) to cool a flow of oil.
- The method of claim 7, further comprising directing a portion (48) of the refrigerant from the return line (40) to a variable frequency drive (20) to cool the variable frequency drive.
- The method of claim 7, further comprising directing a portion (48) of the refrigerant from the return line (40) to a control system (22) to cool the control system.
- The method of claim 7, further comprising directing a portion of the compressed fluid from the first compressor (16) through the refrigeration system to cool the flow of compressed fluid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/353,413 US20070186581A1 (en) | 2006-02-14 | 2006-02-14 | Compressor cooling system |
Publications (3)
Publication Number | Publication Date |
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EP1818629A2 EP1818629A2 (en) | 2007-08-15 |
EP1818629A3 EP1818629A3 (en) | 2009-04-22 |
EP1818629B1 true EP1818629B1 (en) | 2016-12-21 |
Family
ID=38162157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP07250507.6A Active EP1818629B1 (en) | 2006-02-14 | 2007-02-08 | Compressor cooling system |
Country Status (3)
Country | Link |
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US (1) | US20070186581A1 (en) |
EP (1) | EP1818629B1 (en) |
CN (1) | CN101025310B (en) |
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US8459053B2 (en) | 2007-10-08 | 2013-06-11 | Emerson Climate Technologies, Inc. | Variable speed compressor protection system and method |
WO2010137120A1 (en) * | 2009-05-26 | 2010-12-02 | 三菱電機株式会社 | Heat pump type hot water supply device |
JP4770976B2 (en) * | 2009-11-25 | 2011-09-14 | ダイキン工業株式会社 | Container refrigeration equipment |
CN103047167A (en) * | 2011-10-17 | 2013-04-17 | 复盛易利达(上海)压缩机有限公司 | Exhausting device of final stage exhaust pipe of centrifugal compressor |
US9696075B2 (en) * | 2011-12-09 | 2017-07-04 | Daikin Industries, Ltd. | Container refrigeration device |
EP3071904B1 (en) * | 2013-10-31 | 2019-05-15 | Emerson Climate Technologies, Inc. | Heat pump system |
DE102013225450B3 (en) * | 2013-12-10 | 2015-03-26 | Robert Bosch Gmbh | Heat pump with a refrigerant-cooled inverter |
EP3191773B1 (en) | 2014-09-09 | 2021-06-16 | Carrier Corporation | Chiller compressor oil conditioning |
CN104819607B (en) * | 2015-05-12 | 2017-04-12 | 广东美的暖通设备有限公司 | Refrigerating system, refrigerant control method and device and air conditioner |
US10856449B2 (en) * | 2016-12-02 | 2020-12-01 | Dell Products L.P. | Dynamic cooling system |
US11206743B2 (en) | 2019-07-25 | 2021-12-21 | Emerson Climate Technolgies, Inc. | Electronics enclosure with heat-transfer element |
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Also Published As
Publication number | Publication date |
---|---|
US20070186581A1 (en) | 2007-08-16 |
CN101025310A (en) | 2007-08-29 |
EP1818629A3 (en) | 2009-04-22 |
CN101025310B (en) | 2010-10-20 |
EP1818629A2 (en) | 2007-08-15 |
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