EP0120993A2 - Pompe à palettes - Google Patents

Pompe à palettes Download PDF

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Publication number
EP0120993A2
EP0120993A2 EP83112002A EP83112002A EP0120993A2 EP 0120993 A2 EP0120993 A2 EP 0120993A2 EP 83112002 A EP83112002 A EP 83112002A EP 83112002 A EP83112002 A EP 83112002A EP 0120993 A2 EP0120993 A2 EP 0120993A2
Authority
EP
European Patent Office
Prior art keywords
vane pump
pump according
stator
housing
wing
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.)
Granted
Application number
EP83112002A
Other languages
German (de)
English (en)
Other versions
EP0120993A3 (en
EP0120993B1 (fr
Inventor
Siegfried Dipl.-Ing. Hertell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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 Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Priority to AT83112002T priority Critical patent/ATE32775T1/de
Publication of EP0120993A2 publication Critical patent/EP0120993A2/fr
Publication of EP0120993A3 publication Critical patent/EP0120993A3/de
Application granted granted Critical
Publication of EP0120993B1 publication Critical patent/EP0120993B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/40—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member
    • F04C2/46—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member with vanes hinged to the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the vane pump according to the preamble of the first claim is used for pumping gases.
  • the vane pump serves in particular as a vacuum pump for the additional brake booster in diesel engines and in particular also in gasoline engines with fuel injection.
  • the object of the invention is to be seen in the fact that a gas or air pump based on the vane cell principle is provided, the power of which initially increases sharply on the suction side and / or on the pressure side as a function of speed, and no longer or no longer above a certain predetermined speed increases rapidly.
  • the particular object of the invention is to provide a vacuum pump for motor vehicles, which is used only in the lower speed ranges for generating or increasing the vacuum in the brake booster.
  • the vane pump can also be used as a vacuum pump for the brake booster in vehicles with this engine or Otto engine. It should be noted in this regard that a sufficient vacuum for the brake force amplification can be removed, especially on Otto engines in the upper speed ranges.
  • the vane pump according to claim 1 has the advantage that - depending on the setting of the biasing force of the springs with which the pivotable vanes are pivoted to bear against the stator - the vanes abut the stator with increasing speed with less contact pressure, which already results in a reduced Power consumption leads, and that the wings remain in their swung-out state in which they are located in the bulges of the rotor when a certain speed is exceeded, since the biasing force of the spring, which at this speed no longer overcomes the centrifugal force acting on the swung-out wing. In this state, the power consumption is negligible.
  • the spring is able to pivot the swing wing until it contacts the stator. Because the centrifugal force acting on the wing decreases with increasing swing angle of the wing, while the spring is selected so that its spring force decreases less with the swing angle than the centrifugal force or is preferably independent of the swing angle.
  • This vane pump offers interesting operating options by preselecting the spring force.
  • the springs can be preloaded so that all vanes in the entire speed range of the vane pump are brought into contact with the stator. However, it is also possible to pretension the springs in such a way that all blades remain in their bulges when a certain pump speed is reached. In this state, the vane pump no longer provides suction power when this speed is exceeded, but its power consumption is also reduced to a minimum.
  • the suction power and with it the mechanical power consumption of the vane pump can be reduced step by step in accordance with the requirements of the brake booster and depending on the speed with increasing speed. It is also possible, for example, to only drive with one wing when a certain speed is exceeded, the suction power of the pump and the mechanical power consumption of the pump is then reduced to about half.
  • the pump according to the invention can preferably be used with its housing as a tension pulley for the drive belt, which is used to drive the camshaft of an Otto engine.
  • the jacket of the vane pump is designed as a belt idler.
  • the vane pump is attached to the motor housing with a flange which can be swiveled in the direction of the transmission belt.
  • the vane pump can be oil lubricated.
  • it is connected to the oil circuit of the motor vehicle engine and has a central oil supply channel which opens into the bearing areas and the end face areas between the stator and the housing.
  • the oil is discharged through the air outlet duct.
  • a check valve is preferably provided either in the stator or elsewhere, which limits the outlet pressure in the pump to atmospheric pressure and thereby prevents pressure differences from occurring from occurring on the blades of the discharge region.
  • the suction channel is preferably provided with an oil separator, which prevents the oil from creeping back into the brake booster against the very low suction flow. Filters, sieves and, in particular, non-return valves can be used as oil separators.
  • the vane pump is preferably designed as a dry runner.
  • the housing is mounted on a fixed pin instead of in plain bearings in roller bearings.
  • the blades are provided at their free ends with which they slide over the stator either with sealing strips or coatings which have good dry-running properties. It is advantageous to provide the wing heads with rollers which form a straight sealing line with the wing heads and prevent or reduce the sliding contact between the wing heads and the stator.
  • the swivel springs can be designed differently.
  • Torsion springs similar to e.g. used in clothespins. These helically wound torsion springs are arranged coaxially to the swivel axis of the swivel wing and engage with the housing at one end, while they engage behind the swivel wing at the other end.
  • the preload can be adjusted by the number of twists of such torsion springs.
  • Coil springs which act on the housing on the one hand and the swivel wing on the other hand as compression springs are also suitable as springs.
  • leaf springs in particular leaf springs which are embedded in the swivel wing in the region of its swivel axis and are clamped with their free end in the housing.
  • the pivoting wings are in the swung-out state, in bulges of the housing shell and nestle against the envelope cylinder of the inner shell of the housing and do not protrude radially into the interior of the housing. This ensures that the swivel blades form an exact seal with the stator at the bottom dead center of the housing, in which the swivel blades lie in their bulge, and that an overflow of air is prevented at this point of the bottom dead center.
  • the bulges are provided on their end face with small radial pressure equalization channels, which serve in particular in the area of bottom dead center to equalize the pressure between the vane cells and the bulges.
  • the pump is an external rotor. On the fixed mounting flange. with pin 2, a rotor 3 is rotatably mounted.
  • the stator 4 is located in the interior of the rotor.
  • the stator 4 is fastened on the journal 2.
  • the rotor 3 consists of the rotor lids 5, 6 and the rotor jacket 7.
  • the rotor jacket 7 has recesses 8 in its inner jacket, into which wings 9 are fitted.
  • the wings 9 are pressed by spring elements 10.1 or 10.2 or 10.3 about their pivot point 11 against the stator.
  • the spring 10.1 is a "clothespin spring", which is placed around the end of the pin 11 and engages behind the wing 9 with one end 12, while the other end 13 is placed in a slot in the rotor jacket 7.
  • the spring element 10.2 is a leaf spring injected into the wing, which engages with its end 14 protruding from the wing into a slot in the rotor shell 7.
  • the spring element 10.3 is a helical spring which is supported on the one hand on the rotor jacket 7 and on the other hand in a recess in the wing 9.3.
  • a check valve 18 can be arranged in the outlet line, with an opening in the outlet direction.
  • An oil separator (not shown) can be provided in the suction line of the stator 4 or the pin 2 or the flange 1.
  • the oil supply line 15 is guided in a suitable manner via radial branch channels into the slide bearing 28 of the rotor cover 5, 6. Gaps 19 are formed between the rotor lids and the stator 4, which fill with oil and avoid the lossy and wear-causing wall-wall friction between the rotor lids 5, 6 and the end faces of the stator 4.
  • the slide bearings 28 can be provided with circumferential lubrication grooves. Details of such plain bearings are known and will not be discussed further here.
  • spring elements with a graduated spring force. This can be achieved, for example, that the suction power decreases depending on the speed.
  • the gradation of the spring forces can be provided so that at 1500 rpm, 3000 rpm, 4500 rpm, one wing in each case comes out of operation as a result of centrifugal force. Then only one wing is used. That means a halving of the suction power.
  • the pump can also be designed as a dry runner, as shown in FIG. 3.
  • the rotor is in Ball bearings 22, 23 mounted.
  • the oil supply line is omitted.
  • the wing heads 21 are preferably provided with rollers 24, as shown in FIG. 4, in order to avoid dry friction.
  • the rollers nestle against the wing head 21 in such a way that they form a straight sealing strip with it.
  • a sealing strip with good dry-running properties can be used on the wing head opposite the stator.
  • the vane pumps according to FIGS. 1 to 3 are intended as tensioning rollers for the toothed belt, through which the camshaft is driven by the crankshaft of a motor vehicle engine.
  • the flange has a hole 25 for the gravity axis and a hole 26 for guiding and fixing the clamping position.
  • the bulges 8 have blind holes 27 on their end faces or at least on one of their end faces.
  • the diameter of these blind holes is larger than the width of the wings.
  • each blind hole 27 covers the wing at its bottom dead center.
  • the blind holes serve in this bottom dead center as pressure equalization channels or ventilation channels by allowing the air to escape from the bulge when a wing moves into its bottom dead center position and lies against the inner wall of the bulge 8, and on the other hand, air into the bulge again 8 can flow in when the wing... From the inner wall of the bulge again.
  • spring elements with a graduated spring force. This can be achieved, for example, that the suction power decreases depending on the speed.
  • the gradation of the spring forces can be provided so that at 1500 rpm, 3000 rpm, 4500 rpm, one wing in each case comes out of operation as a result of centrifugal force. Then only one wing is used. That means a halving of the suction power.
  • the pump can also be designed as a dry runner, as shown in FIG. 3.
  • the rotor is in Ball bearings 22, 23 mounted.
  • the oil supply line is eliminated.
  • the wing heads 21 are preferably provided with rollers 24, as shown in FIG. 4, in order to avoid dry friction.
  • the rollers nestle against the wing head 21 in such a way that they form a straight sealing strip with it.
  • a sealing strip with good dry-running properties can be used on the wing head compared to the stator.
  • the flange has a hole 25 for the pivot axis and a hole 26 for guiding and fixing the clamping position.
  • the bulges 8 have blind holes 27 on their end faces or at least on one of their end faces.
  • the diameter of these blind holes is larger than the width of the wings.
  • each blind hole 27 covers the wing in its bottom dead center.
  • the blind holes serve in this bottom dead center as pressure compensation channels or ventilation channels, by allowing the air to escape from the bulge when a wing moves into its bottom dead center position and lies against the inner wall of the bulge 8, and on the other hand, air into the bulge again 8 can flow in when the wing lifts off the inner wall of the bulge again.
  • the housing interior is of a cross-cylindrical design and is mounted eccentrically to the circular-cylindrical stator.
  • the invention is probably not bound to this preferred embodiment. Rather, one can e.g. double-acting pump have a housing bulged several times over the stator and be mounted concentrically to the stator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP83112002A 1982-12-11 1983-11-30 Pompe à palettes Expired EP0120993B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112002T ATE32775T1 (de) 1982-12-11 1983-11-30 Fluegelzellenpumpe.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3245892 1982-12-11
DE3245892 1982-12-11
DE3328969 1983-08-11
DE3328969 1983-08-11

Publications (3)

Publication Number Publication Date
EP0120993A2 true EP0120993A2 (fr) 1984-10-10
EP0120993A3 EP0120993A3 (en) 1986-02-19
EP0120993B1 EP0120993B1 (fr) 1988-03-02

Family

ID=25806480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112002A Expired EP0120993B1 (fr) 1982-12-11 1983-11-30 Pompe à palettes

Country Status (2)

Country Link
EP (1) EP0120993B1 (fr)
DE (1) DE3375817D1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3639944A1 (de) * 1985-11-27 1987-06-25 Barmag Barmer Maschf Baueinheit
DE3639943A1 (de) * 1985-11-27 1987-06-25 Barmag Barmer Maschf Fluegelzellenpumpe
US4772185A (en) * 1985-11-27 1988-09-20 Barmag Ag Rotary vane pump having a plurality of inlet and outlet slots in a rotating sleeve
DE4320461A1 (de) * 1993-06-21 1994-12-22 Werner Streit Brennkraftmaschine
FR2833048A1 (fr) 2001-11-30 2003-06-06 Rene Snyders Machine volumetrique rotative fonctionnant sans frottement dans le volume de travail et supportant des pressions et des temperatures elevees
WO2004072482A1 (fr) * 2003-02-12 2004-08-26 Xiaoying Yun Pompe a rotor
CN102305129A (zh) * 2011-09-07 2012-01-04 谭善学 一种摆动翼式发动机
RU2569398C2 (ru) * 2012-12-13 2015-11-27 Евгений Олегович Казача Объемная роторная машина

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10222981A1 (de) * 2002-05-23 2003-12-18 Hans-Willi Stollenwerk Rotationskompressor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1253460A (en) * 1916-04-24 1918-01-15 William Bodge Rotary pump.
GB207973A (en) * 1922-11-08 1923-12-13 Edwin John Lane An improved pump, blower, gas exhauster or rotary engine
DE539608C (de) * 1929-08-30 1931-11-28 Climax Motorenwerke U Schiffsw Mit der Kurbelwelle einer Antriebsmaschine, insbesondere einer Brennkraftmaschine, gekuppeltes Kapselgeblaese
GB351741A (en) * 1930-06-30 1931-07-02 Jethro Thomas Wade Improvements in and relating to rotary air compressors, pumps and the like
DE1653501A1 (de) * 1966-06-20 1970-12-23 Lutz Prof Dr Ing Otto Pumpe
DE2736411A1 (de) * 1977-08-12 1979-02-22 Leopold Sen Klement Kreiskolbenpumpen und kreiskolbenkraftmaschinen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3639944A1 (de) * 1985-11-27 1987-06-25 Barmag Barmer Maschf Baueinheit
DE3639943A1 (de) * 1985-11-27 1987-06-25 Barmag Barmer Maschf Fluegelzellenpumpe
US4772185A (en) * 1985-11-27 1988-09-20 Barmag Ag Rotary vane pump having a plurality of inlet and outlet slots in a rotating sleeve
DE4320461A1 (de) * 1993-06-21 1994-12-22 Werner Streit Brennkraftmaschine
FR2833048A1 (fr) 2001-11-30 2003-06-06 Rene Snyders Machine volumetrique rotative fonctionnant sans frottement dans le volume de travail et supportant des pressions et des temperatures elevees
WO2004072482A1 (fr) * 2003-02-12 2004-08-26 Xiaoying Yun Pompe a rotor
CN102305129A (zh) * 2011-09-07 2012-01-04 谭善学 一种摆动翼式发动机
RU2569398C2 (ru) * 2012-12-13 2015-11-27 Евгений Олегович Казача Объемная роторная машина

Also Published As

Publication number Publication date
EP0120993A3 (en) 1986-02-19
DE3375817D1 (en) 1988-04-07
EP0120993B1 (fr) 1988-03-02

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