US20140331705A1 - Hydraulic Transport Refrigeration System - Google Patents
Hydraulic Transport Refrigeration System Download PDFInfo
- Publication number
- US20140331705A1 US20140331705A1 US14/366,317 US201214366317A US2014331705A1 US 20140331705 A1 US20140331705 A1 US 20140331705A1 US 201214366317 A US201214366317 A US 201214366317A US 2014331705 A1 US2014331705 A1 US 2014331705A1
- Authority
- US
- United States
- Prior art keywords
- compressor
- refrigeration system
- transport refrigeration
- coupled
- control valve
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/003—Transport containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
- B60H1/00435—Driving arrangements for parts of a vehicle air-conditioning fluid or pneumatic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3232—Cooling devices using compression particularly adapted for load transporting vehicles
-
- 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
- F25B49/022—Compressor control arrangements
Definitions
- Embodiments of the invention relate generally to transport refrigeration, and more particularly to a hydraulic transport refrigeration system.
- a transport refrigeration system includes an engine; a hydraulic pump driven by the engine; a supply line coupled to an output of the pump; a supply control valve coupled to the supply line; and a refrigerant compressor coupled to the supply control valve through a compressor supply line, the refrigerant compressor speed being responsive to fluid flow in the compressor supply line.
- FIG. 1 depicts a hydraulic transport refrigeration system in exemplary embodiments
- FIG. 2 depicts mounting of the transport refrigeration system of FIG. 1 to a trailer
- FIG. 3 depicts an exemplary semi-hermetic compressor for use in the transport refrigeration system.
- FIG. 1 depicts a hydraulic powered transport refrigeration system 100 in exemplary embodiments.
- the transport refrigeration system 100 includes an engine 102 that drives a pump 104 .
- Pump 104 provides hydraulic fluid to components of the transport refrigeration system 100 .
- Engine 102 may be a standalone engine (gas or diesel) or may be the engine of the vehicle directly driving pump 104 through, for example, a flywheel.
- engine 102 may be a combination of a standalone engine and the engine of the vehicle operating in conjunction. This allows the run time of the standalone engine to be reduced, particularly during periods when the vehicle engine has extra capacity (e.g., vehicle idling).
- a supply line 106 from an output of pump 104 provides fluid to supply control valve 108 .
- Supply control valve 108 is fluidly coupled to a high-pressure accumulator 110 , motor 112 and compressor 114 .
- Compressor 114 is coupled to supply control valve 108 by a compressor supply line 115 . It is understood that multiple supply control valves may be used, each coupled to an individual system component.
- Supply line 106 may be coupled to a manifold, with several supply control valves independently controlled by controller 116 as described herein.
- Motor 112 drives a fan shaft 113 for turning a fan (e.g., evaporator fan, condenser fan) in the transport refrigeration system 100 .
- a fan e.g., evaporator fan, condenser fan
- Only one motor 112 is shown, but it is understood that multiple motors 112 may be used, each for a respective system component. Further, a single motor 112 may be coupled to multiple fans, pumps, etc.
- a controller 116 receives a number of input signals 118 indicative of the operational status of the transport refrigeration system 100 and adjusts supply control valve 108 accordingly.
- Input signals 118 may represent parameters such a pressure, temperature, speed, etc. and are generated by sensors within transport refrigeration system 100 .
- controller 116 diverts fluid to high-pressure accumulator 110 to store fluid in a pressurized state.
- controller 116 can direct fluid from the high pressure accumulator 110 to motor 112 and compressor 114 . This arrangement allows the compressor 114 speed to be independent of engine 102 speed.
- Controller 116 may be implemented using a general-purpose processor executing software instructions to perform the steps described herein. Alternatively, controller 116 may be implemented in hardware, or with a combination of hardware and software.
- Motor 112 and compressor 114 are fluidly coupled to a return control valve 120 .
- Compressor 114 is coupled to return control valve 120 by a compressor return line 117 .
- Return control valve 120 is coupled to an input of pump 104 via a return line 122 and is coupled to a low-pressure reservoir 124 .
- Controller 116 controls the return control valve 120 in response to input signals 118 indicative of the operational status of the transport refrigeration system 100 . For example, under periods of light load on the transport refrigeration system 100 , return control valve 120 diverts excess fluid to reservoir 124 . It is understood that multiple return control valves may be used, each coupled to an individual system component.
- compressor 114 is a hermetic, hydraulically driven compressor. Fluid from the supply control valve 108 drives the compressor and is returned to pump 104 through return control valve 120 .
- the pump 104 and compressor 114 are encased together in a common housing preventing loss of refrigerant that is typical in open drive systems.
- FIG. 2 illustrates exemplary mounting of the transport refrigeration system 100 to a trailer 150 .
- the high-pressure accumulator 110 and the low pressure reservoir 124 are mounted to the underside of the trailer 150 .
- the remaining components of transport refrigeration system 100 may be mounted on a front face of trailer 150 .
- the evaporator coil and evaporator fan (not show) may be positioned within trailer 150 as known in the art.
- the embodiment of FIG. 1 provides a hydraulic hybrid transport refrigeration system 100 that improves efficiency.
- the high-pressure accumulator 110 stores excess fluid pressure to drive system components. By storing the fluid pressure, engine 102 need not run, at least part of the time, when under light loads. Engine power may also be supplemented during high load transients such as during starts of the compressor 114 , allowing a smaller engine 102 to be used. Additional savings would result as the engine could be shut down under light load and the system ran off the accumulated energy via the accumulator 110 . Other savings may include reduced total cost of ownership of the unit, reduced noise, reduced weight, improved reliability of the compressor, design latitude for fan designs, removal of belts typically used for fans, design latitude for engine power/speed as well as component driven speed. In addition, variable pitch pumps and motors can be used as well as simple regulators to control speeds of fan, compressor, and other devices.
- FIG. 3 depicts an exemplary semi-hermetic compressor 200 for use in the transport refrigeration system.
- Compressor 200 includes a casing 202 housing elements of the compressor.
- a hydraulic compressor motor 204 is positioned in a chamber 206 of casing 202 .
- Compressor supply line 115 is coupled to a compressor control valve 210 .
- Compressor control valve 210 is controlled by controller 116 and controls the flow of fluid to compressor motor 204 .
- Compressor control valve 210 may divert some fluid to compressor return line 117 via a bypass line 212 . This allows the compressor speed to be controlled independently of engine speed. Fluid returned from the compressor motor 204 is filtered at filter 214 and then provided to compressor return line 117 .
- Refrigerant from suction port 216 is drawn into compression mechanism 220 of compressor 200 , where the refrigerant is compressed and output through discharge port 222 .
- the compressor of FIG. 3 is a reciprocating compressor, but other types of compressors may be used.
- An oil separator 224 may be positioned in fluid communication with the discharge port 222 .
- the oil separator 224 is fluidly coupled to the compressor return line 117 to return oil to the return control valve 120 .
- the shaft of the motor 204 is not exposed to atmosphere, but rather to compressor internal pressure. This provides for better compressor vacuum and better performance. Also, any leaks in the seal around the shaft of motor 204 do not result in a loss of refrigerant.
- the fluid in the compressor supply line 115 that drives compressor motor 204 may be the same oil used to lubricate the compressor. If motor 204 leaks fluid, the leaked fluid can re-enter the compression mechanism 220 through an oil check valve 226 positioned between chamber 206 and compression mechanism 220 .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A transport refrigeration system includes an engine, a hydraulic pump driven by the engine, a supply line coupled to an output of the pump, a supply control valve coupled to the supply line and a refrigerant compressor coupled to the supply control valve through a compressor supply line. The refrigerant compressor speed is responsive to fluid flow in the compressor supply line.
Description
- Embodiments of the invention relate generally to transport refrigeration, and more particularly to a hydraulic transport refrigeration system.
- Existing transport refrigeration systems use an engine (e.g., gas or diesel engine) to drive refrigeration system components (e.g., compressor, fans). In order to improve efficiency and reduce emissions, hybrid systems have been proposed to power the transport refrigeration system. One hybrid system, described in U.S. Patent Application Publication 20110000244 and assigned to Carrier Corporation, uses an electrical hybrid power supply. While existing designs are well suited for their intended purposes, improvements in hybrid transport refrigeration systems would be well received in the art.
- According to an exemplary embodiment of the present invention, a transport refrigeration system includes an engine; a hydraulic pump driven by the engine; a supply line coupled to an output of the pump; a supply control valve coupled to the supply line; and a refrigerant compressor coupled to the supply control valve through a compressor supply line, the refrigerant compressor speed being responsive to fluid flow in the compressor supply line.
- The subject matter which is regarded as the invention is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
-
FIG. 1 depicts a hydraulic transport refrigeration system in exemplary embodiments; -
FIG. 2 depicts mounting of the transport refrigeration system ofFIG. 1 to a trailer; and -
FIG. 3 depicts an exemplary semi-hermetic compressor for use in the transport refrigeration system. -
FIG. 1 depicts a hydraulic poweredtransport refrigeration system 100 in exemplary embodiments. Thetransport refrigeration system 100 includes anengine 102 that drives apump 104.Pump 104 provides hydraulic fluid to components of thetransport refrigeration system 100.Engine 102 may be a standalone engine (gas or diesel) or may be the engine of the vehicle directly drivingpump 104 through, for example, a flywheel. Alternatively,engine 102 may be a combination of a standalone engine and the engine of the vehicle operating in conjunction. This allows the run time of the standalone engine to be reduced, particularly during periods when the vehicle engine has extra capacity (e.g., vehicle idling). - A
supply line 106 from an output ofpump 104 provides fluid to supplycontrol valve 108.Supply control valve 108 is fluidly coupled to a high-pressure accumulator 110,motor 112 and compressor 114. Compressor 114 is coupled to supplycontrol valve 108 by acompressor supply line 115. It is understood that multiple supply control valves may be used, each coupled to an individual system component.Supply line 106 may be coupled to a manifold, with several supply control valves independently controlled bycontroller 116 as described herein. -
Motor 112 drives afan shaft 113 for turning a fan (e.g., evaporator fan, condenser fan) in thetransport refrigeration system 100. Only onemotor 112 is shown, but it is understood thatmultiple motors 112 may be used, each for a respective system component. Further, asingle motor 112 may be coupled to multiple fans, pumps, etc. - A
controller 116 receives a number of input signals 118 indicative of the operational status of thetransport refrigeration system 100 and adjustssupply control valve 108 accordingly. Input signals 118 may represent parameters such a pressure, temperature, speed, etc. and are generated by sensors withintransport refrigeration system 100. Under periods of light load on the transport refrigeration system,controller 116 diverts fluid to high-pressure accumulator 110 to store fluid in a pressurized state. When demand on the transport refrigeration system increases,controller 116 can direct fluid from thehigh pressure accumulator 110 tomotor 112 and compressor 114. This arrangement allows the compressor 114 speed to be independent ofengine 102 speed.Controller 116 may be implemented using a general-purpose processor executing software instructions to perform the steps described herein. Alternatively,controller 116 may be implemented in hardware, or with a combination of hardware and software. -
Motor 112 and compressor 114 are fluidly coupled to areturn control valve 120. Compressor 114 is coupled to returncontrol valve 120 by acompressor return line 117.Return control valve 120 is coupled to an input ofpump 104 via areturn line 122 and is coupled to a low-pressure reservoir 124.Controller 116 controls thereturn control valve 120 in response toinput signals 118 indicative of the operational status of thetransport refrigeration system 100. For example, under periods of light load on thetransport refrigeration system 100,return control valve 120 diverts excess fluid toreservoir 124. It is understood that multiple return control valves may be used, each coupled to an individual system component. - In the embodiment of
FIG. 1 , compressor 114 is a hermetic, hydraulically driven compressor. Fluid from thesupply control valve 108 drives the compressor and is returned topump 104 throughreturn control valve 120. In alternate designs, thepump 104 and compressor 114 are encased together in a common housing preventing loss of refrigerant that is typical in open drive systems. -
FIG. 2 illustrates exemplary mounting of thetransport refrigeration system 100 to atrailer 150. As shown inFIG. 2 , the high-pressure accumulator 110 and thelow pressure reservoir 124 are mounted to the underside of thetrailer 150. The remaining components oftransport refrigeration system 100 may be mounted on a front face oftrailer 150. The evaporator coil and evaporator fan (not show) may be positioned withintrailer 150 as known in the art. - The embodiment of
FIG. 1 provides a hydraulic hybridtransport refrigeration system 100 that improves efficiency. The high-pressure accumulator 110 stores excess fluid pressure to drive system components. By storing the fluid pressure,engine 102 need not run, at least part of the time, when under light loads. Engine power may also be supplemented during high load transients such as during starts of the compressor 114, allowing asmaller engine 102 to be used. Additional savings would result as the engine could be shut down under light load and the system ran off the accumulated energy via theaccumulator 110. Other savings may include reduced total cost of ownership of the unit, reduced noise, reduced weight, improved reliability of the compressor, design latitude for fan designs, removal of belts typically used for fans, design latitude for engine power/speed as well as component driven speed. In addition, variable pitch pumps and motors can be used as well as simple regulators to control speeds of fan, compressor, and other devices. -
FIG. 3 depicts an exemplarysemi-hermetic compressor 200 for use in the transport refrigeration system.Compressor 200 includes acasing 202 housing elements of the compressor. Ahydraulic compressor motor 204 is positioned in achamber 206 ofcasing 202.Compressor supply line 115 is coupled to acompressor control valve 210.Compressor control valve 210 is controlled bycontroller 116 and controls the flow of fluid tocompressor motor 204.Compressor control valve 210 may divert some fluid tocompressor return line 117 via abypass line 212. This allows the compressor speed to be controlled independently of engine speed. Fluid returned from thecompressor motor 204 is filtered atfilter 214 and then provided tocompressor return line 117. - Refrigerant from
suction port 216 is drawn intocompression mechanism 220 ofcompressor 200, where the refrigerant is compressed and output throughdischarge port 222. The compressor ofFIG. 3 is a reciprocating compressor, but other types of compressors may be used. Anoil separator 224 may be positioned in fluid communication with thedischarge port 222. Theoil separator 224 is fluidly coupled to thecompressor return line 117 to return oil to thereturn control valve 120. - Referring to
FIG. 3 , the shaft of themotor 204 is not exposed to atmosphere, but rather to compressor internal pressure. This provides for better compressor vacuum and better performance. Also, any leaks in the seal around the shaft ofmotor 204 do not result in a loss of refrigerant. The fluid in thecompressor supply line 115 that drivescompressor motor 204 may be the same oil used to lubricate the compressor. Ifmotor 204 leaks fluid, the leaked fluid can re-enter thecompression mechanism 220 through anoil check valve 226 positioned betweenchamber 206 andcompression mechanism 220. - While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.
Claims (17)
1. A transport refrigeration system comprising:
an engine;
a hydraulic pump driven by the engine;
a supply line coupled to an output of the pump;
a supply control valve coupled to the supply line; and
a refrigerant compressor coupled to the supply control valve through a compressor supply line, the refrigerant compressor speed being responsive to fluid flow in the compressor supply line.
2. The transport refrigeration system of claim 1 further comprising:
a high pressure accumulator coupled to the supply control valve.
3. The transport refrigeration system of claim 2 wherein:
the high pressure accumulator is coupled to the compressor through the supply control valve when the engine is at low speed.
4. The transport refrigeration system of claim 2 wherein:
the high pressure accumulator is coupled to the compressor through the supply control valve upon start of the compressor.
5. The transport refrigeration system of claim 1 further comprising:
a return line coupled to an input of the pump;
a return control valve coupled to the return line; and
a reservoir coupled to the return control valve.
6. The transport refrigeration system of claim 1 further comprising:
a hydraulic motor coupled to the supply control valve.
7. The transport refrigeration system of claim 6 wherein:
the hydraulic motor drives a fan.
8. The transport refrigeration system of claim 1 further comprising:
a controller for controlling the supply control valve in response to input signals indicative of the operational status of the transport refrigeration system.
9. The transport refrigeration system of claim 1 wherein:
the compressor is a hermetic compressor.
10. The transport refrigeration system of claim 1 wherein:
the compressor is a semi-hermetic compressor.
11. The transport refrigeration system of claim 10 wherein:
the compressor includes a hydraulic motor coupled to the compressor supply line.
12. The transport refrigeration system of claim 11 wherein:
the compressor includes a casing, the casing having a chamber containing the hydraulic motor, the casing housing a compressor mechanism.
13. The transport refrigeration system of claim 12 further comprising:
an oil check valve providing a passage for oil from the chamber to the compressor mechanism.
14. The transport refrigeration system of claim 11 further comprising:
a compressor control valve coupled to the compressor supply line.
15. The transport refrigeration system of claim 14 wherein:
the compressor control valve is coupled to a compressor return line via a bypass line.
16. The transport refrigeration system of claim 1 wherein:
the fluid in the compressor supply line is oil suitable for lubricating the compressor.
17. The transport refrigeration system of claim 1 wherein:
the engine is a vehicle engine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/366,317 US20140331705A1 (en) | 2011-12-19 | 2012-12-13 | Hydraulic Transport Refrigeration System |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161577126P | 2011-12-19 | 2011-12-19 | |
US14/366,317 US20140331705A1 (en) | 2011-12-19 | 2012-12-13 | Hydraulic Transport Refrigeration System |
PCT/US2012/069446 WO2013096083A1 (en) | 2011-12-19 | 2012-12-13 | Hydraulic transport refrigeration system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140331705A1 true US20140331705A1 (en) | 2014-11-13 |
Family
ID=47501470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/366,317 Abandoned US20140331705A1 (en) | 2011-12-19 | 2012-12-13 | Hydraulic Transport Refrigeration System |
Country Status (3)
Country | Link |
---|---|
US (1) | US20140331705A1 (en) |
EP (1) | EP2794347B1 (en) |
WO (1) | WO2013096083A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017030954A1 (en) * | 2015-08-19 | 2017-02-23 | Caterpillar Global Mining Equipment Llc | Accumulator driven accessories |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4196595A (en) * | 1976-01-29 | 1980-04-08 | Dunham-Bush, Inc. | Integrated thermal solar heat pump system |
US4257795A (en) * | 1978-04-06 | 1981-03-24 | Dunham-Bush, Inc. | Compressor heat pump system with maximum and minimum evaporator ΔT control |
US5226294A (en) * | 1992-04-28 | 1993-07-13 | Thermo King Corporation | Compressor arrangement suitable for transport refrigeration systems |
US5287708A (en) * | 1990-09-28 | 1994-02-22 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Car air conditioner with a hydraulically driven refrigerant compressor |
US5741120A (en) * | 1995-06-07 | 1998-04-21 | Copeland Corporation | Capacity modulated scroll machine |
US5794734A (en) * | 1993-10-01 | 1998-08-18 | Fev Motorentechnik Gmbh & Co. Kommanditgesellschaft | Method and apparatus for supplying driving energy to vehicle subassemblies |
US6357248B1 (en) * | 1999-04-28 | 2002-03-19 | Thermo King Corporation | Compact transport temperature control unit |
US20040200230A1 (en) * | 2004-05-28 | 2004-10-14 | Eugene Holt | Hydraulic power unit for a refrigeration system |
US20080060857A1 (en) * | 2006-09-12 | 2008-03-13 | Parker-Hannifin | System for operating a hydraulically actuated device |
US7614242B1 (en) * | 2004-11-23 | 2009-11-10 | Carlos Quesada Saborio | Transport refrigeration system |
US20100154449A1 (en) * | 2008-12-24 | 2010-06-24 | Stover Jr A Blair | Regenerative Electric Drive Refrigerated Unit |
US7854136B2 (en) * | 2005-08-09 | 2010-12-21 | Carrier Corporation | Automated drive for fan and refrigerant system |
WO2011112663A2 (en) * | 2010-03-09 | 2011-09-15 | U.S. Environmental Protection Agency | Hydraulic hybrid vehicle with safe and efficient hydrostatic operation |
US20110219797A1 (en) * | 2007-08-17 | 2011-09-15 | Sanden Corporation | Capacity Control System for Variable Capacity Compressor and Display Device for the System |
US20150165864A1 (en) * | 2012-06-19 | 2015-06-18 | Thermo King Corporation | Transportation refrigeration bulkhead |
US20160272048A1 (en) * | 2013-11-04 | 2016-09-22 | Carrier Corporation | Kinetic Energy Hybrid System for Transport Refrigeration |
US20160320114A1 (en) * | 2013-12-26 | 2016-11-03 | Sanden Holdings Corporation | Flow rate measuring device and variable displacement compressor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009008859A1 (en) | 2007-07-06 | 2009-01-15 | Carrier Corporation | Transport refrigeration series hybrid power supply |
-
2012
- 2012-12-13 EP EP12809940.5A patent/EP2794347B1/en active Active
- 2012-12-13 US US14/366,317 patent/US20140331705A1/en not_active Abandoned
- 2012-12-13 WO PCT/US2012/069446 patent/WO2013096083A1/en active Application Filing
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4196595A (en) * | 1976-01-29 | 1980-04-08 | Dunham-Bush, Inc. | Integrated thermal solar heat pump system |
US4257795A (en) * | 1978-04-06 | 1981-03-24 | Dunham-Bush, Inc. | Compressor heat pump system with maximum and minimum evaporator ΔT control |
US5287708A (en) * | 1990-09-28 | 1994-02-22 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Car air conditioner with a hydraulically driven refrigerant compressor |
US5226294A (en) * | 1992-04-28 | 1993-07-13 | Thermo King Corporation | Compressor arrangement suitable for transport refrigeration systems |
US5794734A (en) * | 1993-10-01 | 1998-08-18 | Fev Motorentechnik Gmbh & Co. Kommanditgesellschaft | Method and apparatus for supplying driving energy to vehicle subassemblies |
US5741120A (en) * | 1995-06-07 | 1998-04-21 | Copeland Corporation | Capacity modulated scroll machine |
US6357248B1 (en) * | 1999-04-28 | 2002-03-19 | Thermo King Corporation | Compact transport temperature control unit |
US20040200230A1 (en) * | 2004-05-28 | 2004-10-14 | Eugene Holt | Hydraulic power unit for a refrigeration system |
US7614242B1 (en) * | 2004-11-23 | 2009-11-10 | Carlos Quesada Saborio | Transport refrigeration system |
US7854136B2 (en) * | 2005-08-09 | 2010-12-21 | Carrier Corporation | Automated drive for fan and refrigerant system |
US20080060857A1 (en) * | 2006-09-12 | 2008-03-13 | Parker-Hannifin | System for operating a hydraulically actuated device |
US20110219797A1 (en) * | 2007-08-17 | 2011-09-15 | Sanden Corporation | Capacity Control System for Variable Capacity Compressor and Display Device for the System |
US20100154449A1 (en) * | 2008-12-24 | 2010-06-24 | Stover Jr A Blair | Regenerative Electric Drive Refrigerated Unit |
WO2011112663A2 (en) * | 2010-03-09 | 2011-09-15 | U.S. Environmental Protection Agency | Hydraulic hybrid vehicle with safe and efficient hydrostatic operation |
US20150165864A1 (en) * | 2012-06-19 | 2015-06-18 | Thermo King Corporation | Transportation refrigeration bulkhead |
US20160272048A1 (en) * | 2013-11-04 | 2016-09-22 | Carrier Corporation | Kinetic Energy Hybrid System for Transport Refrigeration |
US20160320114A1 (en) * | 2013-12-26 | 2016-11-03 | Sanden Holdings Corporation | Flow rate measuring device and variable displacement compressor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017030954A1 (en) * | 2015-08-19 | 2017-02-23 | Caterpillar Global Mining Equipment Llc | Accumulator driven accessories |
Also Published As
Publication number | Publication date |
---|---|
WO2013096083A1 (en) | 2013-06-27 |
EP2794347B1 (en) | 2020-02-05 |
EP2794347A1 (en) | 2014-10-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10480834B2 (en) | Refrigerant cooling and lubrication system | |
EP1941219B1 (en) | Refrigerant system with pulse width modulated components and variable speed compressor | |
US9212601B2 (en) | Device and vehicle or production machine | |
US20080196445A1 (en) | Variable Speed Compressor Motor Control for Low Speed Operation | |
US20130298594A1 (en) | Thermodynamic system provided with a plurality of compressors | |
US9903468B2 (en) | Hydraulic pressure supply system of automatic transmission | |
EP2059679B1 (en) | Oil-free reciprocating piston air compressor system with inlet throttle | |
WO2007041818A1 (en) | Fluid compressor with aerostatic bearing, control system of a compressor with aerostatic bearing and method of controlling a compressor with aerostatic bearing | |
US20070140866A1 (en) | Oil-injection screw compressor | |
CN110520603B (en) | Method and oil pressure device for controlling oil pressure of oil pump in combustion engine | |
CN101307754A (en) | Multistaging gas compression device | |
US20140331705A1 (en) | Hydraulic Transport Refrigeration System | |
JP5030547B2 (en) | Compressor power reduction method and power reduction device | |
KR101966650B1 (en) | Turbo air compressor with high speed and efficiency | |
EP2762803B1 (en) | Two-stage compression device and chilling/air-conditioning device using the same | |
US11994138B2 (en) | Gas compressor with a plurality of air realease systems each having an air release valve and an air regulating valve | |
EP2035758B1 (en) | A cooling device | |
CN112197453B (en) | Compressor, double-compressor series heat pump unit and control method thereof | |
US20100193294A1 (en) | Air Compressor Pre-Lubrication System | |
CN207212924U (en) | Parts of bearings and there is its compressor, refrigerating plant | |
CN108035880B (en) | A kind of variable speed becomes the more rotor compressors of discharge capacity and its becomes displacement control | |
CN112128103B (en) | Rotary compressor and refrigeration cycle system | |
KR20120121370A (en) | Internal combustion engine driven oil pressure machine and supercharger thereof | |
CN109113993A (en) | A kind of horizontal compressor | |
JPH03249328A (en) | Hydraulic auxiliary turbocharger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |