US20080282716A1 - Air Conditioning Compressor Comprising a Differential Pressure Control Device - Google Patents
Air Conditioning Compressor Comprising a Differential Pressure Control Device Download PDFInfo
- Publication number
- US20080282716A1 US20080282716A1 US12/092,810 US9281006A US2008282716A1 US 20080282716 A1 US20080282716 A1 US 20080282716A1 US 9281006 A US9281006 A US 9281006A US 2008282716 A1 US2008282716 A1 US 2008282716A1
- Authority
- US
- United States
- Prior art keywords
- air conditioning
- pressure control
- control device
- check valve
- conditioning compressor
- 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
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
-
- 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
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/1081—Casings, housings
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Air-Conditioning For Vehicles (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
An air conditioning compressor for air conditioning systems in motor vehicles, wherein the air conditioning compressor at the high pressure output comprises a check valve and a pressure control device, for example a pressure control valve or a bursting disk.
Description
- The invention relates to an air conditioning compressor for air conditioning systems in motor vehicles, wherein the air conditioning compressor comprises a check valve and a pressure control device at the high pressure outlet.
- Compressors of this type are known. The integration of the check valve is required to improve the starting behavior of the displacement-adjustable compressor and to safeguard the coupling-free drive of the compressor for the switched-off air conditioning operation. This check valve is installed in the high pressure region of the system and, at least in the case of a pressure gradient counter to the throughput direction of the check valve in the high pressure side, divides the high pressure side into two partial regions.
- Furthermore, according to the state of the art, a pressure control valve is integrated on the high pressure side in the air conditioning compressor, the valve being disposed downstream in front of the check valve. This means that in the event of a pressure gradient at the check valve counter to the throughput direction of the check valve, which is to say during a pressure increase in the remaining high pressure region of the air conditioning system, the high pressure cannot be relieved via the pressure control valve.
- It is therefore the object of the invention to implement an air conditioning compressor and/or an air conditioning system, which are not associated with these problems.
- The task is solved by an air conditioning compressor for air conditioning systems in motor vehicles, wherein the air conditioning compressor comprises a check valve and a pressure control device on the high pressure outlet, for example a pressure control valve or a bursting disk, wherein the pressure control device is disposed downstream behind the check valve and wherein a differential pressure control device is disposed in parallel to the check valve. Preferably an air conditioning compressor is used, wherein the differential pressure control device acts in both flow directions, which is to say both in the flow direction from the air conditioning compressor into the air conditioning system, and also in the opposite flow direction. This has the advantage that even if a check valve is used, pressure control is guaranteed for the entire high pressure region of the air conditioning system upstream and downstream of the check valve.
- In addition, an air conditioning compressor is preferred, wherein the differential pressure control device is a valve device, which is to say a device that is reversible and reusable.
- Furthermore, an air conditioning compressor is preferred, wherein the differential pressure control device is a bursting disk.
- A further air conditioning compressor according to the invention is characterized in that the bursting disk is integrated in the check valve. Also preferred is an air conditioning compressor, wherein the pressure differential for triggering the bursting disk is greater than the pressure differential for the check valve. This has the advantage that first a pressure increase beyond the maximum pressure can act at the compressor outlet via the check valve onto the pressure control valve disposed downstream thereof. Only if the check valve jams or fails will the differential pressure control be triggered and connect the elevated pressure at the compressor outlet to the pressure control valve in the other part of the high pressure line of the air conditioning system.
- Furthermore, a compressor is preferred, wherein the differential pressure control device on the high pressure side of the air conditioning system connects the air conditioning compressor and the remaining high pressure part of the air conditioning system, which is to say both system parts, to the actual pressure control valve.
- The invention will be explained on the basis of the figures.
-
FIG. 1 is a schematic illustration of the high pressure region of an air conditioning system, comprising an air conditioning compressor having a differential pressure control device. -
FIG. 2 shows the high pressure region of an air conditioning system comprising a differential pressure control valve. -
FIG. 3 shows the high pressure region of an air conditioning system comprising a bursting disk integrated in a check valve as the differential pressure control. -
FIG. 1 shows the high pressure region of an air conditioning system, including an air conditioning compressor 1. The air conditioning compressor 1 takes in coolant, compresses it, and then pumps it via acheck valve 3 into anoutlet line 11, where the outer high pressure part of the air conditioning system beings. Starting at theoutlet line 11, the coolant first flows via agas cooler 5, then via an inner heat exchanger 7, until it reaches the expansion valve 9, where the coolant is expanded at lower pressure. The high pressure region of the air conditioning system thus transitions into the low pressure region, which is not described here. The compressor 1 comprises ahousing 13, in which both thecheck valve 3 and apressure control device 15 and a differentialpressure control device 17 are disposed. Thecheck valve 13 is required in order to improve the starting behavior of the displacement-adjustable compressor 1 and to safeguard the coupling-free drive of the compressor 1 for the switched-off air conditioning compressor operation. As a result of thecheck valve 3, which can have an opening pressure of 2 bar, for example, directly upon starting a certain pressure level builds in the compressor 1, which ensures swiveling of the compressor power unit and therefore immediate operation of the air conditioning compressor 1. Downstream, behind thecheck valve 3, apressure control device 15, for example in the form of a pressure control valve or a bursting disk, is disposed, which opens, for example, when a maximum pressure of about 160 bar is exceeded and prevents further increase in pressure. Thispressure control device 15 thus also safeguards the maximum pressure of the compressor 1 and the remaining high pressure part of the air conditioning system to the expansion valve 9 by means of thecheck valve 3. However, in the event that thecheck valve 3 should jam or fail due to any kind of system malfunction, a differentialpressure control device 17 can become active, which, for example at a differential pressure of 10 bar in both directions, connects the air conditioning compressor 1 and the remaining high pressure region of the air conditioning system with each other. -
FIG. 2 shows such a differential pressure control device configured as a differential pressure valve in a schematic illustration. In parallel to thecheck valve 3, acheck valve 19 acting in the same flow direction and acheck valve 21 acting in the opposite direction are provided. Thevalves high pressure region 23 of the air conditioning system both system parts can be connected to each other at a pressure differential of 10 bar, and consequently also to thepressure control valve 15. Advantageously, the opening pressure of the differential pressure control device, for example 10 bar, is greater than the differential pressure of thecheck valve 3 because in normal operation the valve also fulfills the safety function with thepressure control valve 15 disposed downstream thereof, both for the compressor 1 and for thehigh pressure region 23 of the air conditioning system. - The higher pressure differential is particularly necessary for safeguarding the differential pressure in the event a bursting
disk 25 is used within thecheck valve 29, as is shown inFIG. 3 , because the burstingdisk 25 is not supposed to be destroyed during normal operation, but instead thecheck valve 29 with the opening pressure of about 2 bar is required for the starting and swiveling of the compressor 1 and is supposed to connect the compressor 1 to thehigh pressure region 23 of the air conditioning system. The use of abursting disk 25 within thepiston 31 of thecheck valve 29 offers the special advantage that no additional space is required for the differential pressure control element because it can be integrated in the existing check valve. During normal operation, thepiston 31 of thecheck valve 29 inside thevalve housing 33 is pushed into thevalve seat 37 by ahelical spring 35, wherein thehelical spring 35 keeps thevalve 29 closed at a prestressing force up to an opening pressure of about 2 bar. After thecheck valve 29 is open, the coolant can be conducted from the compressor 1 via theline 39 to theoutlet line 11 of the air conditioning compressor into thehigh pressure region 23 of the air conditioning system. In the event that the pressure differential of, for example, 10 bar on the burstingdisk 25 is exceeded in one or the other direction, the burstingdisk 25 will break, thereby activating theline 41 between the air conditioning compressor 1 and thehigh pressure region 23 of the air conditioning system. Due to the differential pressure device in the form of the burstingdisk 25, thus both system parts on the high pressure side are connected to thepressure control valve 15, and thereby secured, in the event thecheck valve 29 jams or fails. -
- 1 Air conditioning compressor
- 3 Check valve
- 5 Gas cooler
- 7 Inner heat exchanger
- 9 Expansion valve
- 11 Outlet line
- 13 Compressor housing
- 15 Pressure control device
- 17 Differential pressure control device
- 19 Check valve
- 21 Check valve
- 23 High pressure region of the air conditioning system
- 25 Bursting disk
- 29 Check valve
- 31 Piston of the
check valve 29 - 33 Valve housing
- 35 Helical spring
- 37 Valve seat
- 39 Line to the
outlet line 11 - 41 Line between the air conditioning compressor 1 and the
high pressure region 23
Claims (7)
1. An air conditioning compressor for air conditioning systems in motor vehicles, the air conditioning compressor at the high pressure output comprising a check valve and a pressure control device, for example a pressure control valve or a bursting disk, wherein the pressure control device is disposed downstream behind the check valve and that a differential pressure control device is disposed parallel in to the check valve.
2. The air conditioning compressor according to claim 1 , wherein the differential pressure control device acts in both flow directions, which is to say both in the flow direction from the air conditioning compressor into the air conditioning system, and also in the opposite flow direction.
3. The air conditioning compressor according to claim 1 , wherein the differential pressure control device is a valve device, which is to say it is reversible and reusable.
4. The air conditioning compressor according to claim 1 , wherein the differential pressure control device is a bursting disk.
5. The air conditioning compressor according to claim 4 , wherein the bursting disk is integrated in the check valve.
6. The air conditioning compressor according to claim 4 , wherein the pressure differential for triggering the bursting disk is greater than the pressure differential on the check valve.
7. An air conditioning compressor according claim 1 , wherein the differential pressure control device on the high pressure side of the air conditioning system connects the air conditioning compressor and the remaining high pressure side of the air conditioning system, which is to say both system parts, to the actual pressure control valve.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005053451 | 2005-11-09 | ||
DE102005053451.1 | 2005-11-09 | ||
PCT/EP2006/010586 WO2007054243A1 (en) | 2005-11-09 | 2006-11-04 | Air-conditioning compressor with a differential-pressure limiting device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080282716A1 true US20080282716A1 (en) | 2008-11-20 |
Family
ID=37668450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/092,810 Abandoned US20080282716A1 (en) | 2005-11-09 | 2006-11-04 | Air Conditioning Compressor Comprising a Differential Pressure Control Device |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080282716A1 (en) |
EP (1) | EP1948927B1 (en) |
JP (1) | JP4739422B2 (en) |
KR (1) | KR101261398B1 (en) |
CN (1) | CN101305185B (en) |
AT (1) | ATE438800T1 (en) |
DE (2) | DE502006004468D1 (en) |
WO (1) | WO2007054243A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3597970A1 (en) * | 2018-07-16 | 2020-01-22 | Goodrich Corporation | Valve assembly |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102313410B (en) * | 2011-08-31 | 2013-01-02 | 浙江盾安机械有限公司 | Throttling valve |
DE102011117354A1 (en) | 2011-10-29 | 2013-05-02 | Volkswagen Aktiengesellschaft | Air conditioning compressor for a motor vehicle |
DE112014005667A5 (en) * | 2013-12-13 | 2016-09-29 | Magna Powertrain Bad Homburg GmbH | air compressor |
CN104748430B (en) * | 2015-03-31 | 2018-02-06 | 广东美的暖通设备有限公司 | Multiple on-line system |
Citations (14)
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US5251852A (en) * | 1991-09-06 | 1993-10-12 | General Electric Company | Thermal fuel transfer and tank isolation to reduce unusable fuel |
US5596507A (en) * | 1994-08-15 | 1997-01-21 | Jones; Jeffrey K. | Method and apparatus for predictive maintenance of HVACR systems |
US6244159B1 (en) * | 1998-04-13 | 2001-06-12 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Variable displacement type swash plate compressor and displacement control valve |
US6341947B1 (en) * | 1999-03-26 | 2002-01-29 | Toyota Jidosha Kabushiki Kaisha | Pump device wherein detection of failure of one of pumps causes a change in the manner of control of the pump or pumps to compensate for the failure |
US6457319B1 (en) * | 1999-11-25 | 2002-10-01 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Air conditioner and control valve in variable displacement compressor |
US6517323B2 (en) * | 2000-07-07 | 2003-02-11 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Displacement control mechanism for variable displacement type compressor |
US6644066B1 (en) * | 2002-06-14 | 2003-11-11 | Liebert Corporation | Method and apparatus to relieve liquid pressure from receiver to condenser when the receiver has filled with liquid due to ambient temperature cycling |
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US20050276700A1 (en) * | 2004-06-11 | 2005-12-15 | Tgk Co., Ltd. | Control valve for variable displacement compressor |
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-
2006
- 2006-11-04 EP EP06806685A patent/EP1948927B1/en not_active Not-in-force
- 2006-11-04 CN CN2006800415272A patent/CN101305185B/en not_active Expired - Fee Related
- 2006-11-04 WO PCT/EP2006/010586 patent/WO2007054243A1/en active Application Filing
- 2006-11-04 DE DE502006004468T patent/DE502006004468D1/en active Active
- 2006-11-04 DE DE112006003052T patent/DE112006003052A5/en not_active Withdrawn
- 2006-11-04 JP JP2008539313A patent/JP4739422B2/en not_active Expired - Fee Related
- 2006-11-04 US US12/092,810 patent/US20080282716A1/en not_active Abandoned
- 2006-11-04 AT AT06806685T patent/ATE438800T1/en not_active IP Right Cessation
-
2008
- 2008-05-23 KR KR1020087012288A patent/KR101261398B1/en not_active IP Right Cessation
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US5251852A (en) * | 1991-09-06 | 1993-10-12 | General Electric Company | Thermal fuel transfer and tank isolation to reduce unusable fuel |
US5596507A (en) * | 1994-08-15 | 1997-01-21 | Jones; Jeffrey K. | Method and apparatus for predictive maintenance of HVACR systems |
US6244159B1 (en) * | 1998-04-13 | 2001-06-12 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Variable displacement type swash plate compressor and displacement control valve |
US20040179957A1 (en) * | 1998-10-28 | 2004-09-16 | Ewan Choroszylow | Novel gas booster system |
US6341947B1 (en) * | 1999-03-26 | 2002-01-29 | Toyota Jidosha Kabushiki Kaisha | Pump device wherein detection of failure of one of pumps causes a change in the manner of control of the pump or pumps to compensate for the failure |
US6457319B1 (en) * | 1999-11-25 | 2002-10-01 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Air conditioner and control valve in variable displacement compressor |
US6517323B2 (en) * | 2000-07-07 | 2003-02-11 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Displacement control mechanism for variable displacement type compressor |
US6644066B1 (en) * | 2002-06-14 | 2003-11-11 | Liebert Corporation | Method and apparatus to relieve liquid pressure from receiver to condenser when the receiver has filled with liquid due to ambient temperature cycling |
US20040028533A1 (en) * | 2002-08-12 | 2004-02-12 | Chou Wen San | Cylinder housing for air compressor |
US6846162B2 (en) * | 2002-08-12 | 2005-01-25 | Wen San Chou | Cylinder housing for air compressor |
US20050063840A1 (en) * | 2002-08-12 | 2005-03-24 | Chou Wen San | Air compressor having stable configuration |
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US20060124170A1 (en) * | 2002-11-07 | 2006-06-15 | Luk Fahrzeug-Hydraulik Gmbh & Co., Kg | Compressor |
US20040184925A1 (en) * | 2003-02-19 | 2004-09-23 | Yoshihiro Ochiai | Control valve system |
US20050123409A1 (en) * | 2003-10-27 | 2005-06-09 | Masaki Ota | Controller for variable displacement compressor and control method for the same |
US20050276700A1 (en) * | 2004-06-11 | 2005-12-15 | Tgk Co., Ltd. | Control valve for variable displacement compressor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3597970A1 (en) * | 2018-07-16 | 2020-01-22 | Goodrich Corporation | Valve assembly |
Also Published As
Publication number | Publication date |
---|---|
EP1948927A1 (en) | 2008-07-30 |
KR101261398B1 (en) | 2013-05-07 |
JP4739422B2 (en) | 2011-08-03 |
ATE438800T1 (en) | 2009-08-15 |
DE112006003052A5 (en) | 2008-10-23 |
DE502006004468D1 (en) | 2009-09-17 |
CN101305185A (en) | 2008-11-12 |
KR20080066963A (en) | 2008-07-17 |
JP2009514733A (en) | 2009-04-09 |
CN101305185B (en) | 2010-12-15 |
EP1948927B1 (en) | 2009-08-05 |
WO2007054243A1 (en) | 2007-05-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, GERMA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PARSCH, WILLI;DI VITO, THOMAS;HINRICHS, JAN;AND OTHERS;REEL/FRAME:021521/0874;SIGNING DATES FROM 20080605 TO 20080818 Owner name: IXETIC MAC GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PARSCH, WILLI;DI VITO, THOMAS;HINRICHS, JAN;AND OTHERS;REEL/FRAME:021521/0874;SIGNING DATES FROM 20080605 TO 20080818 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |