WO2002002942A1 - Dispositif de securite pour compresseur de conditionnement d'air - Google Patents

Dispositif de securite pour compresseur de conditionnement d'air Download PDF

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Publication number
WO2002002942A1
WO2002002942A1 PCT/DE2001/002390 DE0102390W WO0202942A1 WO 2002002942 A1 WO2002002942 A1 WO 2002002942A1 DE 0102390 W DE0102390 W DE 0102390W WO 0202942 A1 WO0202942 A1 WO 0202942A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
area
engine
pressure area
suction
Prior art date
Application number
PCT/DE2001/002390
Other languages
German (de)
English (en)
Inventor
Georg Weber
Tilo SCHÄFER
Original Assignee
Luk Fahrzeug-Hydraulik Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Luk Fahrzeug-Hydraulik Gmbh & Co. Kg filed Critical Luk Fahrzeug-Hydraulik Gmbh & Co. Kg
Priority to DE10193283T priority Critical patent/DE10193283D2/de
Priority to AU2001275655A priority patent/AU2001275655A1/en
Publication of WO2002002942A1 publication Critical patent/WO2002002942A1/fr

Links

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
    • 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
    • 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
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • 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
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/184—Valve controlling parameter
    • F04B2027/185—Discharge pressure
    • 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
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/1863—Controlled by crankcase pressure with an auxiliary valve, controlled by
    • F04B2027/1872—Discharge pressure
    • 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
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/1886—Open (not controlling) fluid passage
    • F04B2027/189—Open (not controlling) fluid passage between crankcase and discharge chamber
    • 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
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/1886—Open (not controlling) fluid passage
    • F04B2027/1895—Open (not controlling) fluid passage between crankcase and suction chamber

Definitions

  • the invention relates to a safety device for the pressure limitation of a variable stroke or displacement variable compressor, in which the inclination of the swash plate or the swash plate can be varied by the difference between the high pressure in the discharge pressure area and the pressure in the drive chamber, possibly also by the difference between the pressure in the Drive room and the pressure in the suction area of the air conditioning compressor.
  • air conditioning compressors have a feed connection between the outlet chamber of the compressor in the discharge pressure area and the engine room pressure area.
  • a valve and, if appropriate, an additional connection from the engine pressure area to the suction pressure area, such as a bypass throttle can be arranged, which can influence the pressure difference between the discharge pressure area and the engine pressure area.
  • air conditioning compressors of this type can have a connection between the engine pressure area and the suction pressure area, in which a valve or a constant throttle can also be arranged, as a result of which the pressure difference between engine pressure and suction space pressure can be influenced.
  • a typical variable displacement compressor that is used, for example, in motor vehicles for their air conditioning systems, has an engine compartment which is provided within a housing and contains the engine elements for conveying the coolant.
  • a drive shaft is rotatably mounted in housing elements.
  • Part of the housing contains a cylinder block through which a plurality of cylinder bores extend. Pistons are reciprocally housed in each cylinder bore.
  • a swash plate or swash plate is provided on the drive shaft, which rotates with the drive shaft and is mounted in such a way that its inclination can be adjusted in relation to the drive shaft during the revolutions.
  • the pistons are coupled to the swash plate or swash plate with corresponding gear elements, such as sliding shoes. The stroke of the pistons during a back and forth movement within the associated cylinder bores is determined by the inclination of the swash plate or swash plate.
  • the inclination of the swash plate or swash plate is determined by adjusting the pressure in the drive chamber in relation to the pressures acting on the piston in the discharge pressure area, that is to say in the high pressure area, and in the suction area, that is i Low pressure range, controlled.
  • the difference between the pressures acting on the two ends of each piston can be determined by
  • Throttle devices or valve devices are provided with which the pressure in the drive chamber can be regulated in relation to the discharge pressure and the intake pressure. If necessary, these valve devices are over
  • Electromagnetic devices can be remotely controlled.
  • pressure limiting devices are provided which release the refrigerant to the environment, for example by means of rupture disks or pressure relief valves when the maximum pressure in the discharge pressure range is exceeded.
  • the object of the invention is to provide a safety device in which the maximum pressure in the high pressure area, the maximum pressure in the drive area area and the maximum pressure in the suction pressure area are secured.
  • a safety device for the pressure limitation of a stroke-variable or displacement-variable compressor in which the inclination of the swash plate or swash plate is varied at least by the difference between the high pressure in the discharge pressure area and the engine pressure, possibly by the difference between the engine pressure and suction pressure a supply connection between the discharge pressure area and the drive area pressure area, with a valve device which is arranged in the supply connection, and optionally a connection from the suction area pressure area to the drive area pressure area, in which a valve device is also arranged, and with a pressure relief valve which, when a high pressure in the high pressure area is exceeded, pressure medium into the Drains the drive room, with a further pressure relief valve or with a rupture disc, which releases pressure medium from the drive room into the environment when the pressure in the drive room is exceeded, whereby Safety devices for the high pressure area, for the drive area area and for the suction pressure area are functionally coupled to one another.
  • a safety device is preferred in which a check valve device is arranged between the suction pressure
  • a safety device is preferred in which the high pressure area and / or the suction pressure area are pressure-protected via the drive chamber.
  • Another safety device is characterized in that when the high pressure is exceeded in the high pressure area, the pressure relief valve responds and the pivoting compressor swings back.
  • Figure 1 shows a security concept
  • Figure 2 shows a further security concept.
  • FIG. 1 shows a schematic representation of such a safety device with the safety concept for all three pressure rooms.
  • a pressure limiting valve 30 connects the high pressure region 31 of a compressor 32, shown schematically here, to the engine compartment region 33.
  • the low pressure or intake pressure region 34 of the air conditioning compressor is connected to the engine compartment region 33 via a check valve 35.
  • the engine area 33 is connected to the environment 37, that is to say the atmosphere around the compressor, via a pressure relief valve 36. It is part of the function of this safety concept that when the maximum permissible pressure in the high-pressure region 31 is exceeded, the pressure relief valve 30 blows off the pressure medium conveyed from the discharge side into the crank chamber. This increases the engine pressure in the engine room 33 and the stroke of the compressor is reduced.
  • a check valve 35 can also be provided between the intake side 34 and the engine compartment side 33, which releases fluid from the intake side into the engine compartment when the pressure on the intake side is above the pressure in the engine compartment.
  • the additional pressure relief valve 36 can be used limit the pressure by blowing off the pressure medium into the atmosphere 37 in the drive chamber 33. But this is only necessary for extreme emergencies, since one can assume with a concept according to the invention that by exceeding the highest pressure in the system, namely the high pressure on the discharge side 31, the compressor pivots back through the pressure limiting valve 30 and no further
  • High pressure area 31 and suction pressure area 34 are shown.
  • FIG. 2 shows a variant of the safety concept from FIG. 1, which differs only in that the pressure limiting valve 36 from FIG. 1 is replaced by a rupture disk device 39 in order to safeguard the pressure in the drive room.
  • the safety concept described in this application eliminates the following disadvantages according to the invention, such as, for example, the separate securing of the discharge side and drive chamber and suction side by burst plugs or blow-off safety valves to the atmosphere, which has the disadvantage of more sealing points on the outside.
  • the safety concept just described thus brings about a reduction in the necessary sealing points to the outside or a reduction in the number of burst plugs or blow-off safety valves.
  • the number of system failures is reduced because there is no loss of tightness when the pressure on the discharge side is exceeded, since in this case the compressor swings back and additional power to increase the pressure is no longer generated.

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)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un dispositif de sécurité pour limiter la pression d'un compresseur (32) à course ou à déplacement variable, dans lequel l'inclinaison du disque en nutation ou du plateau oscillant peut être modulée au moins par la différence entre la haute pression régnant dans la zone de pression de détente (31) et la pression de l'espace moteur (33), éventuellement par la différence entre la pression de l'espace moteur (33) et la pression d'aspiration (34), au moyen d'un dispositif de distribution monté dans le raccordement d'alimentation, et éventuellement au moyen d'une jonction supplémentaire entre la zone de pression de l'espace moteur (33) et la zone de pression d'aspiration (34), ainsi qu'au moyen d'une soupape de limitation de pression qui soutire du milieu de pression dans l'espace moteur (33) en cas de dépassement d'une haute pression dans la zone de haute pression et au moyen d'une autre soupape de limitation de pression (36) ou d'un disque claquant (39) qui dégage dans l'environnement, du milieu de pression soutiré dans l'espace moteur, en cas de dépassement de la pression dans ledit espace moteur (33).
PCT/DE2001/002390 2000-07-06 2001-06-27 Dispositif de securite pour compresseur de conditionnement d'air WO2002002942A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10193283T DE10193283D2 (de) 2000-07-06 2001-06-27 Sicherheitseinrichtung für Klimakompressor
AU2001275655A AU2001275655A1 (en) 2000-07-06 2001-06-27 Safety device for an air-conditioning compressor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10032905.5 2000-07-06
DE10032905 2000-07-06
DE10058006 2000-11-23
DE10058006.8 2000-11-23

Publications (1)

Publication Number Publication Date
WO2002002942A1 true WO2002002942A1 (fr) 2002-01-10

Family

ID=26006304

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/002390 WO2002002942A1 (fr) 2000-07-06 2001-06-27 Dispositif de securite pour compresseur de conditionnement d'air

Country Status (5)

Country Link
AU (1) AU2001275655A1 (fr)
DE (2) DE10193283D2 (fr)
FR (1) FR2812038B1 (fr)
IT (1) ITMI20011432A1 (fr)
WO (1) WO2002002942A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004042232A1 (fr) * 2002-11-07 2004-05-21 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Compresseur
WO2007054243A1 (fr) * 2005-11-09 2007-05-18 Ixetic Mac Gmbh Compresseur de climatisation a systeme de limitation de la pression differentielle
WO2015086326A1 (fr) * 2013-12-13 2015-06-18 Magna Powertrain Bad Homburg GmbH Compresseur de climatisation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19810789A1 (de) * 1997-03-13 1998-09-17 Toyoda Automatic Loom Works Kühlkreis und Kompressor
EP0952346A2 (fr) * 1998-04-14 1999-10-27 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Compresseur en plateau en biais à capacité constante ou variable
EP0992747A2 (fr) * 1998-10-05 2000-04-12 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Systèmes de conditionnement d'air
EP1004834A2 (fr) * 1998-11-24 2000-05-31 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Systèmes de conditionnement d'air
EP1014016A2 (fr) * 1998-12-21 2000-06-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Systèmes de conditionnement d'air

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19810789A1 (de) * 1997-03-13 1998-09-17 Toyoda Automatic Loom Works Kühlkreis und Kompressor
EP0952346A2 (fr) * 1998-04-14 1999-10-27 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Compresseur en plateau en biais à capacité constante ou variable
EP0992747A2 (fr) * 1998-10-05 2000-04-12 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Systèmes de conditionnement d'air
EP1004834A2 (fr) * 1998-11-24 2000-05-31 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Systèmes de conditionnement d'air
EP1014016A2 (fr) * 1998-12-21 2000-06-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Systèmes de conditionnement d'air

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004042232A1 (fr) * 2002-11-07 2004-05-21 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Compresseur
CN100395450C (zh) * 2002-11-07 2008-06-18 卢克汽车-液压系统两合公司 压缩机
US7874309B2 (en) 2002-11-07 2011-01-25 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Compressor
WO2007054243A1 (fr) * 2005-11-09 2007-05-18 Ixetic Mac Gmbh Compresseur de climatisation a systeme de limitation de la pression differentielle
KR101261398B1 (ko) 2005-11-09 2013-05-07 익세틱 마크 게엠베하 차압 제어 장치를 갖는 공기 조절 압축기
WO2015086326A1 (fr) * 2013-12-13 2015-06-18 Magna Powertrain Bad Homburg GmbH Compresseur de climatisation

Also Published As

Publication number Publication date
AU2001275655A1 (en) 2002-01-14
ITMI20011432A0 (it) 2001-07-05
DE10130843A1 (de) 2002-02-28
DE10193283D2 (de) 2003-05-15
FR2812038A1 (fr) 2002-01-25
ITMI20011432A1 (it) 2003-01-05
FR2812038B1 (fr) 2006-12-15

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