EP1631745B1 - Vane-cell pump provided with a deep-drawn metal-sheet pot - Google Patents
Vane-cell pump provided with a deep-drawn metal-sheet pot Download PDFInfo
- Publication number
- EP1631745B1 EP1631745B1 EP04733242A EP04733242A EP1631745B1 EP 1631745 B1 EP1631745 B1 EP 1631745B1 EP 04733242 A EP04733242 A EP 04733242A EP 04733242 A EP04733242 A EP 04733242A EP 1631745 B1 EP1631745 B1 EP 1631745B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump according
- sheet metal
- pump
- pot
- pressure
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 55
- 239000010687 lubricating oil Substances 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims description 21
- 229920003023 plastic Polymers 0.000 claims description 21
- 210000003734 kidney Anatomy 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 238000007373 indentation Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 22
- 230000008901 benefit Effects 0.000 description 12
- 239000003921 oil Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241001136792 Alle Species 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000000207 volumetry Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
- F04C2/34—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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- 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
- F04C2/34—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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3446—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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
-
- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/24—Manufacture essentially without removing material by extrusion
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Definitions
- the invention relates to a pump, for example for conveying lubricating oil of an internal combustion engine, in particular a multi-stroke vane pump, wherein the rotation group comprises a rotor with at least radially movable vanes, a Hubkontur on which the wings with their wing heads sealingly slide along, and two axial side covers, as has side plates or housing walls.
- Such pumps are known. They have in their side plates axial inlet openings and outlet openings, which must be separated according to their pressure ranges, for example by sealing means or the like and therefore cause a large axial length in such vane pumps. Also, the components of the known rotation groups, such as. As side plates made of sintered steel and contour rings made of solid steel or sintered steel, according to thick-walled and thus require both a large radial and axial space.
- Such a vane pump is disclosed, for example, in Japanese Laid-Open Publication JP57097091 shown.
- the pump housing parts are made of die-cast and have integrated side plate contours in the housing parts.
- the contour ring itself is integrated in a disk-shaped die-cast housing part.
- the publication DE19913632A describes a liquid ring pump whose housing consists of a deep-drawn sheet steel. However, an additional side plate 6 is inserted within the housing.
- the publication FR-A-2660221 discloses a pump in which the stroke contour and a first axial side plate are represented by a steel sheet pot 6.
- the pump housing has a simple cylindrical contour and not the special contour necessary especially for a double-stroke vane pump.
- the sheet metal housing 6 itself is sealed on its open side by a flange 7, which obviously consists of cast material, whereby a relatively large axial space is created here as well.
- a pump for example for conveying lubricating oil of an internal combustion engine, in particular a multi-stroke vane pump
- the rotation group comprises a rotor with at least radially movable vanes, a Hubkontur on which the wings with their wing heads sealingly slide, and two axial side covers in which the stroke contour and a first axial side plate are represented by a steel sheet pot and in which a second axial side plate is represented by a sheet steel cover, which is characterized in that the sheet metal lid has an embossed shoulder whose outer contour is the shape having the stroke contour.
- the metal lid after insertion into the sheet metal cup, the rounding of the sheet metal cup, which are caused by the deep-drawing process, covered and thus produces tight sealing gaps within the rotation group.
- the metal lid can be produced by fine blanking or fine blanking.
- a pump according to the invention is characterized in that the suction openings are represented by radial openings in the sheet metal pot.
- This has the advantage that the rotation group has a narrow construction, since the suction channel can be arranged radially around the sheet metal pot and does not have to be arranged axially on the opposite side of the pressure channel.
- a pump is preferred in which the outlet openings are represented by axial openings (pressure kidneys) and optionally at least one radial opening in the sheet metal pot.
- the radial outlet opening can be closed by a temperature switching valve or a pressure switching valve and thus produces a switchable delivery area.
- a pump according to the invention is characterized in that the temperature switching valve has an overstroke spring. This has the advantage that after closing the radial outlet opening by the temperature switching valve, if a further expansion of a thermal expansion element by increasing the temperature of the lubricating oil sets, the expansion element without deformation or destruction can perform an additional expansion path against the overtravel.
- the plastic housing is preferably finished sprayed and therefore requires no post-processing. The advantage is that an encapsulated in sheet rotation group is integrated in a plastic housing and so the advantages of the two types of material can be exploited.
- Another pump according to the invention is characterized in that the axial outlet opening of the switchable delivery area can be closed by a spring-tongue check valve.
- the shape of the spring tongue check valve the Shape of Hubkonturkurümmung on.
- the spring tongue check valve is mounted on a pin made of plastic in the plastic housing.
- the spring tongue check valve is protected by a stroke stop in the plastic housing from overstretching. This design of the spring-tongue check valve has the advantages of being very cost-effective and on the other hand also being space-neutral integrated in the pump.
- a pump according to the invention is characterized in that the sheet metal pot has a notched or embossed cold-start ring, which in the cold operating state under the wings leads the wings according to the stroke contour to the outside and directs against the stroke contour. Furthermore, a pump is preferred in which the rotor has grooves or depressions for receiving the cold start ring. Also, a pump is preferred in which the sheet metal lid has a notched or embossed cold-start ring.
- a pump according to the invention is characterized in that the sheet metal lid has embossed impression impression kidneys, that is to say pressure kidneys without passage openings which only effect an axial pressure surface compensation for the rotor in the pressure region.
- a pump is preferred in which the one or more radial outlet openings of the switchable delivery region open into a channel which opens directly into the intake region of the second, non-switchable delivery region over a short path.
- FIG. 9 shows the section C-C from FIG. 7.
- the pump according to the invention is shown in its housing in plan view without cover.
- the sheet metal pot 1, in which the Hubkontur is shown, contains the other parts of the rotation group such.
- the rotor 7 has a recess 9, in which z. B. engages the crankshaft of an internal combustion engine and thus drives the lubricating oil pump.
- the rotation group is arranged with the sheet metal pot 1 in a plastic housing 11 and is closed by the sheet metal lid, not shown here.
- the completely encased in steel sheet rotation group has the advantage that here do not change the friction pairings.
- the sheet metal pot 1 is partially surrounded within the plastic housing 11 by a channel 13, which is acted upon by the suction pressure of the pump.
- a channel 13 which is acted upon by the suction pressure of the pump.
- Within the rotation group form by the shape of the stroke contour two pressure areas 15.1 and 15.2, in which the cells between wing, rotor, cam and side plates shrink and thus eject the pressure medium, and two suction 17.1 and 17.2, in which enlarge the corresponding cells and suck in the medium.
- the function of such a double-stroke vane pump is known and need not be explained further here.
- a temperature switching valve 19 is further arranged, which has a Dehnscherlement within a housing 21 which can press a valve sealing plate 25 against the force of a return spring 27 against the sheet metal pot 1 with temperature increase of the lubricating oil via a pin 23.
- the ejected from the pressure kidney 15.1 oil thus passes without pressure through the channel 13 to the suction kidney 17.2 of the second pump half and is thus sucked by the pump without much loss.
- the tin pot 1 has to 17.2 one or more radial openings in the intake of the suction kidney.
- the suction kidney 17.1 of the first pump part has not visible here radial openings in the tin pot 1, through which 29 can be sucked oil from the suction channel.
- the suction channel 29 is as well as the suction channel 13 connected to the suction port 31, from which the oil from the engine compartment, such as. B. the oil pan, can be sucked.
- the oil is then expelled through the lubricating oil pump in the pressure channel 32 and supplied under pressure via the pressure port 34 to the engine.
- a pressure limiting valve not shown here, is arranged, which opens when the maximum permissible pressure in the pressure region 32 is exceeded and, via the outflow channel 38, supplies the excess oil to the suction region 29.
- FIG 2 the section B-B of Figure 1 is shown.
- the sheet metal pot 1 is embedded in the plastic housing 11.
- the sheet metal pot 1 contains the rotation group and thus, inter alia, the rotor 7 shown here in cross section.
- the rotation group is closed by a sheet metal cover 40.
- the stroke contour, as shown in Figure 1 fed directly into the plate, and the bottom plate 42 of the sheet metal cup forms the first axial side plate of the rotation group.
- the cover 40 has a shoulder 44, which projects into the upper edge of the sheet metal pot 1, which in its outer contour also has the shape of the Hubkontur and thus represents the second axial side plate of the rotation group.
- a plurality of radial openings 46 and 48 are introduced into the sheet metal pot 1 in the suction region.
- the intake ports 46 and 48 open into the intake ports 29 and 13, which are shown in Figure 1 in plan view.
- FIG 3 the design of the sheet metal pot 1 in the plastic housing 11 and the rotor 7 is shown enlarged. It can be seen that the sheet metal pot 1 at its upper end has a rounding 50, which is due to the deep drawing process manufacturing technology.
- the rotor 7 has on its side surfaces two grooves 52 into which a so-called cold-start ring 54 engages.
- the cold start ring 54 is notched or stamped out of the sheet metal pot 1 and also has the shape of the stroke contour on a reduced scale.
- This cold-start ring thus engages within the rotor grooves 52 under the wings and raise them along the contour so that they glide and seal almost at the contour ring, even if the wings are not pressed out by centrifugal forces or by additional pressure forces under the wing.
- a secure concern of the wing heads on the contour ring is ensured even at cold start and low speeds.
- the interaction of the sheet metal pot 1 is shown with the sheet metal cover 40 in particular in detail.
- the rounding 50 is caused by production, but this would be problematic as a sealing surface or running surface for the wings. Therefore, the metal cover 40, which may be made as a flat component with a manufacturing process other than deep drawing, has a sharp-edged deformation of the shoulder 44, which covers the rounding 50 and thus ensures adequate sealing of the rotation group on the top of the rotor 7 and the wing heads ,
- the wings are housed within the rectangular rotation group space with its side walls and its wing head sufficiently sealed.
- FIG. 5 shows in cross section the rotation group and the temperature switching valve.
- the same components are provided with the same reference numerals and will not be explained again here to avoid repetition.
- the temperature switching valve is extended in this illustration by increased temperature of the lubricating oil and closes with its valve body 25 an opening 56 in the pressure range.
- This leads to the pressure kidney 15.1 of Figure 1 can not promote in the non-pressurized circulation of the channel 13 and thus via a check valve 64, which will be shown in more detail later, promotes in the pressure channel 66, whereby both pressure kidneys supply the lubricating oil demand of the engine.
- the temperature switching valve 19 is housed with the housing of Dehnstoff emotionss 21 in a separate cover 62, wherein the Dehnscherlementgeophuse 21 is supported with a so-called over-stroke spring 58 on a web 60 of the lid 62.
- the overstroke spring 58 secures the expansion element and the housing against overstretching by further increase in temperature and expansion of the expansion element, which works as follows: First, when the temperature increases the expansion element, the actuating rod 23 extend against the force of the spring 27 and thus with the Valve body 25, the pressure port 56 close.
- the spring 27, which serves as a return spring after cooling for the expansion element and brings the temperature switching valve back into the open position, is surrounded by a spring cup 68, which also serves as a guide for the rod 23 here. If a further expansion of the expansion element now takes place when the temperature switching valve is closed, then the expansion element can deflect against the stop 60 against the force of the overstroke spring 58 and thus avoid destruction of the expansion element or of the housing part supporting the expansion element.
- the temperature switching valve is in the open, i. shown in the cooled state.
- the valve closing body 25 has moved away from the radial pressure opening 56 of the sheet metal pot 1, and the pressure oil from the area 15.1 can now flow via the opening 56 into the channel 13 for pressureless circulation up to the suction kidney 17.2 from FIG.
- the spring cup 68 also serves to guide the actuating pin 23 of the temperature control valve.
- the return spring 27 has pushed back on the spring cup 68, the actuating pin and the cooled expansion element.
- the rotation group is removed from the figure 1, so that one can recognize the arrangement of the check valve 64 in an underlying pressure channel 70.
- the pressure channel 70 and the spring leaf 72 of the check valve 64 are adapted to the stroke contour, so that the spring leaf 72 of the check valve 64 can close the pressure kidney 15.1 of Figure 1.
- the check valve 64 is mounted by means of a plastic pin 74 in the housing 11 and is fixed by the latter after insertion of the sheet metal pot against the plastic housing.
- Figure 8 shows the section D-D of Figure 7 and thus the Hubendanschlag 76 of the valve blade 72.
- Figure 9 shows in section C-C the plastic pin 74 which supports the spring leaf 72 in the plastic housing 11.
- FIG. 10 shows in cross-section an alternative of the cold-start ring 54.1 to the illustration of the cold-start ring 54 in FIG.
- the cold start contour 54.1 is pressed out by stamping out of the sheet metal pot 1 and thus engages under the wing 3, which is mounted in the cam ring 7, and thus guides the wing 3 along the stroke contour of the metal cover 1 along.
- axial and radial openings are provided in the pressure range of the switched stage.
- the openings in the radial direction with the temperature switching valve or a pressure switching valve are used for the non-pressurized circulation.
- the oil from the pressure side is flushed out again into the suction chamber for the suction of the next suction stage. Due to the channel guide thus obtained, only small flow losses result by deflection.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Pumpe, beispielsweise zur Förderung von Schmieröl eines Verbrennungsmotors, insbesondere eine mehrhubige Flügelzellenpumpe, bei welcher die Rotationsgruppe einen Rotor mit zumindest radial beweglichen Flügeln, eine Hubkontur, an welcher die Flügel mit ihren Flügelköpfen dichtend entlang gleiten, und zwei axiale Seitenabdeckungen, wie Seitenplatten oder Gehäusewände aufweist.The invention relates to a pump, for example for conveying lubricating oil of an internal combustion engine, in particular a multi-stroke vane pump, wherein the rotation group comprises a rotor with at least radially movable vanes, a Hubkontur on which the wings with their wing heads sealingly slide along, and two axial side covers, as has side plates or housing walls.
Derartige Pumpen sind bekannt. Sie weisen in ihren Seitenplatten axiale Einlassöffnungen und Auslassöffnungen auf, welche entsprechend ihren Druckbereichen beispielsweise durch Dichtungseinrichtungen oder ähnliches getrennt sein müssen und deshalb bei derartigen Flügelzellenpumpen eine große axiale Baulänge verursachen. Auch sind die Bauteile der bekannten Rotationsgruppen, wie z. B. Seitenplatten aus Sinterstahl und Konturringe aus massivem Stahl oder Sinterstahl, entsprechend dickwandig und erfordern somit sowohl einen großen radialen als auch axialen Bauraum.Such pumps are known. They have in their side plates axial inlet openings and outlet openings, which must be separated according to their pressure ranges, for example by sealing means or the like and therefore cause a large axial length in such vane pumps. Also, the components of the known rotation groups, such as. As side plates made of sintered steel and contour rings made of solid steel or sintered steel, according to thick-walled and thus require both a large radial and axial space.
Eine derartige Flügelzellenpumpe wird beispielsweise in der japanischen Offenlegungsschrift
Die Druckschrift
Die Druckschrift
Es ist also Aufgabe der Erfindung, eine Pumpe darzustellen, welche diese Nachteile nicht aufweist.It is therefore an object of the invention to present a pump which does not have these disadvantages.
Die Aufgabe wird gelöst durch eine Pumpe, beispielsweise zur Förderung von Schmieröl eines Verbrennungsmotors, insbesondere eine mehrhubige Flügelzellenpumpe, bei welcher die Rotationsgruppe einen Rotor mit zumindest radial beweglichen Flügeln, eine Hubkontur, an welcher die Flügel mit ihren Flügelköpfen dichtend entlanggleiten, und zwei axiale Seitenabdeckungen, wie Seitenplatten oder Gehäusewände aufweist, wobei die Hubkontur und eine erste axiale Seitenplatte durch einen Stahlblechtopf dargestellt sind und bei welcher eine zweite axiale Seitenplatte durch einen Stahlblechdeckel dargestellt ist, welche sich dadurch auszeichnet, dass der Blechdeckel einen eingeprägten Absatz aufweist, dessen Außenkontur die Form der Hubkontur aufweist. Das hat den Vorteil, dass der Blechdeckel nach Einsetzen in den Blechtopf die Abrundungen des Blechtopfes, welche durch den Tiefziehvorgang verursacht sind, überdeckt und damit enge Dichtspalte innerhalb der Rotationsgruppe herstellt. Erfindungsgemäß kann der Blechdeckel durch Feinstanzen oder Feinschneiden herstellbar sein.The object is achieved by a pump, for example for conveying lubricating oil of an internal combustion engine, in particular a multi-stroke vane pump, wherein the rotation group comprises a rotor with at least radially movable vanes, a Hubkontur on which the wings with their wing heads sealingly slide, and two axial side covers in which the stroke contour and a first axial side plate are represented by a steel sheet pot and in which a second axial side plate is represented by a sheet steel cover, which is characterized in that the sheet metal lid has an embossed shoulder whose outer contour is the shape having the stroke contour. This has the advantage that the metal lid after insertion into the sheet metal cup, the rounding of the sheet metal cup, which are caused by the deep-drawing process, covered and thus produces tight sealing gaps within the rotation group. According to the invention, the metal lid can be produced by fine blanking or fine blanking.
Eine erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass die Ansaugöffnungen durch radiale Öffnungen im Blechtopf dargestellt sind. Das hat den Vorteil, dass die Rotationsgruppe eine schmale Bauweise aufweist, da der Saugkanal radial um den Blechtopf angeordnet sein kann und nicht axial auf der gegenüberliegenden Seite des Druckkanales angeordnet werden muss.A pump according to the invention is characterized in that the suction openings are represented by radial openings in the sheet metal pot. This has the advantage that the rotation group has a narrow construction, since the suction channel can be arranged radially around the sheet metal pot and does not have to be arranged axially on the opposite side of the pressure channel.
Auch wird eine Pumpe bevorzugt, bei welcher die Auslassöffnungen durch axiale Öffnungen (Drucknieren) und gegebenenfalls mindestens eine radiale Öffnung im Blechtopf dargestellt sind. Erfindungsgemäß ist die radiale Auslassöffnung durch ein Temperaturschaltventil oder ein Druckschaltventil verschließbar und stellt somit einen schaltbaren Förderbereich her. Das hat den Vorteil, dass je nach temperaturabhängigem oder druckabhängigem Schmierölbedarf des Verbrennungsmotors die Pumpe mit beiden Förderbereichen Drucköl fördert oder nur mit einem Förderbereich Drucköl fördert und der zweite Förderbereich ohne Druckaufbau mitläuft, wodurch sich eine beträchtliche Leistungseinsparung ergeben kann.Also, a pump is preferred in which the outlet openings are represented by axial openings (pressure kidneys) and optionally at least one radial opening in the sheet metal pot. According to the invention, the radial outlet opening can be closed by a temperature switching valve or a pressure switching valve and thus produces a switchable delivery area. This has the advantage that, depending on the temperature-dependent or pressure-dependent lubricating oil requirement of the internal combustion engine, the pump delivers pressure oil with two delivery regions or delivers pressurized oil with only one delivery region and the second delivery region travels without pressure build-up, which can result in considerable power savings.
Eine erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass das Temperaturschaltventil eine Überhubfeder aufweist. Das hat den Vorteil, dass nach Verschließen der radialen Auslassöffnung durch das Temperaturschaltventil, wenn sich eine weitere Ausdehnung eines Wärmeausdehnungselements durch Temperaturerhöhung des Schmieröls einstellt, das Ausdehnungselement ohne Verformung oder Zerstörung einen zusätzlichen Ausdehnungsweg gegen die Überhubfeder vollziehen kann.A pump according to the invention is characterized in that the temperature switching valve has an overstroke spring. This has the advantage that after closing the radial outlet opening by the temperature switching valve, if a further expansion of a thermal expansion element by increasing the temperature of the lubricating oil sets, the expansion element without deformation or destruction can perform an additional expansion path against the overtravel.
Bevorzugt wird eine Pumpe, bei welcher der Blechtopf der Rotationsgruppe und gegebenenfalls das Temperaturschaltventil oder Druckschaltventil in ein Kunststoffgehäuse integriert sind. Das Kunststoffgehäuse ist vorzugsweise fertig gespritzt und bedarf daher keiner Nachbearbeitung. Der Vorteil besteht darin, dass eine in Blech gekapselte Rotationsgruppe in einem Kunststoffgehäuse integriert ist und so die Vorteile der beiden Materialarten ausgenutzt werden können.Preference is given to a pump in which the sheet metal pot of the rotation group and optionally the temperature switching valve or pressure switching valve are integrated in a plastic housing. The plastic housing is preferably finished sprayed and therefore requires no post-processing. The advantage is that an encapsulated in sheet rotation group is integrated in a plastic housing and so the advantages of the two types of material can be exploited.
Eine weitere erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass die axiale Auslassöffnung des schaltbaren Förderbereiches durch ein Federzungenrückschlagventil verschließbar ist. Dabei weist die Form des Federzungenrückschlagventils die Form der Hubkonturkrümmung auf. Weiterhin ist das Federzungenrückschlagventil auf einem Zapfen aus Kunststoff im Kunststoffgehäuse gelagert. Auch wird das Federzungenrückschlagventil durch einen Hubanschlag im Kunststoffgehäuse vor Überdehnungen geschützt. Diese Ausbildung des Federzungenrückschlagventils hat die Vorteile, zum einen sehr kostengünstig und zum anderen aber auch bauraumneutral in der Pumpe integriert zu sein.Another pump according to the invention is characterized in that the axial outlet opening of the switchable delivery area can be closed by a spring-tongue check valve. In this case, the shape of the spring tongue check valve the Shape of Hubkonturkurümmung on. Furthermore, the spring tongue check valve is mounted on a pin made of plastic in the plastic housing. Also, the spring tongue check valve is protected by a stroke stop in the plastic housing from overstretching. This design of the spring-tongue check valve has the advantages of being very cost-effective and on the other hand also being space-neutral integrated in the pump.
Eine erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass der Blechtopf einen ausgeklinkten oder eingeprägten Kaltstartring aufweist, welcher im kalten Betriebszustand unter den Flügeln die Flügel entsprechend der Hubkontur nach außen führt und gegen die Hubkontur lenkt. Weiterhin wird eine Pumpe bevorzugt, bei welcher der Rotor Nuten oder Einsenkungen zur Aufnahme des Kaltstartringes aufweist. Auch wird eine Pumpe bevorzugt, bei welcher der Blechdeckel einen ausgeklinkten oder eingeprägten Kaltstartring aufweist.A pump according to the invention is characterized in that the sheet metal pot has a notched or embossed cold-start ring, which in the cold operating state under the wings leads the wings according to the stroke contour to the outside and directs against the stroke contour. Furthermore, a pump is preferred in which the rotor has grooves or depressions for receiving the cold start ring. Also, a pump is preferred in which the sheet metal lid has a notched or embossed cold-start ring.
Eine erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass der Blechdeckel eingeprägte Scheindrucknieren aufweist, also Drucknieren ohne Durchgangsöffnungen, die nur eine axiale Druckflächenkompensation für den Rotor im Druckbereich bewirken.A pump according to the invention is characterized in that the sheet metal lid has embossed impression impression kidneys, that is to say pressure kidneys without passage openings which only effect an axial pressure surface compensation for the rotor in the pressure region.
Bevorzugt wird weiterhin eine Pumpe, bei welcher der oder die radialen Auslassöffnungen des schaltbaren Förderbereiches in einen Kanal münden, der direkt auf kurzem Weg in den Ansaugbereich des zweiten, nicht schaltbaren Förderbereichs mündet. Das hat den Vorteil, dass geringe Strömungsverluste und eine günstige Kanalführung zu einem energiearmen drucklosen Umlauf des schaltbaren Förderbereichs führen.Furthermore, a pump is preferred in which the one or more radial outlet openings of the switchable delivery region open into a channel which opens directly into the intake region of the second, non-switchable delivery region over a short path. This has the advantage that low flow losses and a favorable ducting lead to a low-energy pressure-free circulation of the switchable delivery area.
Die Erfindung wird nun anhand der Figuren beschrieben.
Figur 1 zeigt eine Aufsicht auf die geöffnete Pumpe.- Figur 2 zeigt den Schnitt B-B aus
Figur 1. Figur 3 zeigt im Querschnitt den Blechtopf und den Rotor.- Figur 4 zeigt ein Detail des Blechtopfes und des Blechdeckels.
Figur 5 zeigt im Querschnitt die Rotationsgruppe und das Temperaturschaltventil.- Figur 6 zeigt im Querschnitt das Temperaturschaltventil im geöffneten Zustand.
Figur 7 zeigt das Pumpengehäuse mit dem Rückschlagventil.- Figur 8 zeigt den Schnitt D-D aus
Figur 7. - Figur 9 zeigt im Querschnitt eine Ausführung des Kaltstartrings
- Figur 10 zeigt im Querschnitt eine weitere Ausführung des Kaltstartrings
- FIG. 1 shows a plan view of the opened pump.
- FIG. 2 shows the section BB from FIG. 1.
- Figure 3 shows in cross section the sheet metal pot and the rotor.
- FIG. 4 shows a detail of the sheet metal pot and the sheet metal lid.
- Figure 5 shows in cross section the rotation group and the temperature switching valve.
- Figure 6 shows in cross section the temperature switching valve in the open state.
- FIG. 7 shows the pump housing with the check valve.
- FIG. 8 shows the section DD from FIG. 7.
- Figure 9 shows in cross section an embodiment of the cold start ring
- FIG. 10 shows in cross section a further embodiment of the cold start ring
Figur 9 zeigt den Schnitt C-C aus Figur 7.FIG. 9 shows the section C-C from FIG. 7.
In Figur 1 ist die erfindungsgemäße Pumpe in ihrem Gehäuse in Aufsicht ohne Abdeckung dargestellt. Der Blechtopf 1, in welchem die Hubkontur abgebildet ist, enthält die anderen Teile der Rotationsgruppe wie z. B. die Flügel 3, welche in radialen Schlitzen 5 verschieblich im Rotor 7 angeordnet sind. Der Rotor 7 hat eine Ausnehmung 9, in welche z. B. die Kurbelwelle eines Verbrennungsmotors eingreift und damit die Schmierölpumpe antreibt. Man spricht in diesem Fall auch von einer so genannten Wellenhalspumpe. Die Rotationsgruppe ist mit dem Blechtopf 1 in einem Kunststoffgehäuse 11 angeordnet und wird durch den hier nicht dargestellten Blechdeckel verschlossen. Die komplett in Stahlblech gekapselte Rotationsgruppe hat damit den Vorteil, dass sich hier die Reibpaarungen nicht ändern. Es gibt keine gleitenden Bewegungen zu Kunststoffteilen, so dass ein verschleißarmer Betrieb möglich ist. Der Blechtopf 1 wird innerhalb des Kunststoffgehäuses 11 teilweise von einem Kanal 13 umgeben, welcher mit dem Ansaugdruck der Pumpe beaufschlagt ist. Innerhalb der Rotationsgruppe bilden sich durch die Form der Hubkontur zwei Druckbereiche 15.1 und 15.2, in denen sich die Zellen zwischen Flügel, Rotor, Hubring und Seitenplatten verkleinern und damit das Druckmedium ausstoßen, und zwei Ansaugbereiche 17.1 und 17.2, in denen sich die entsprechenden Zellen vergrößern und damit Medium ansaugen. Die Funktion einer derartigen doppelhubigen Flügelzellenpumpe ist bekannt und muss hier nicht weiter erläutert werden. Innerhalb des Gehäuses ist weiterhin ein Temperaturschaltventil 19 angeordnet, welches innerhalb eines Gehäuses 21 ein Dehnstoffelement besitzt, welches bei Temperaturerhöhung des Schmieröls über einen Stift 23 eine Ventildichtplatte 25 gegen die Kraft einer Rückholfeder 27 gegen den Blechtopf 1 pressen kann. Im Blechtopf 1 ist in dieser Position, hier nicht dargestellt, eine radiale Öffnung, aus der die Druckniere 15.1 Drucköl in den Ansaugkanal 13 fördern kann, so lange das Temperaturschaltventil in diesem geöffneten Zustand verharrt. Das von der Druckniere 15.1 ausgestoßene Öl gelangt damit drucklos über den Kanal 13 bis zur Saugniere 17.2 der zweiten Pumpenhälfte und wird somit ohne große Verluste von der Pumpe angesaugt. Der Blechtopf 1 besitzt dazu im Ansaugbereich der Saugniere 17.2 eine oder mehrere radiale Öffnungen. Ebenso besitzt die Saugniere 17.1 des ersten Pumpenteils hier nicht sichtbar radiale Öffnungen im Blechtopf 1, durch welche aus dem Saugkanal 29 Öl angesaugt werden kann. Der Saugkanal 29 ist ebenso wie der Saugkanal 13 mit dem Ansauganschluss 31 verbunden, von welchem das Öl aus dem Verbrennungsmotorbereich, wie z. B. der Ölwanne, angesaugt werden kann. Das Öl wird dann durch die Schmierölpumpe im Druckkanal 32 ausgestoßen und unter Druck über den Druckanschluss 34 dem Verbrennungsmotor zugeführt. Im Bereich 36 des Kunststoffgehäuses ist ein hier nicht dargestelltes Druckbegrenzungsventil angeordnet, welches bei Überschreiten des maximal zulässigen Druckes im Druckbereich 32 öffnet und über den Abströmkanal 38 das überflüssige Öl wiederum dem Ansaugbereich 29 zuführt.In Figure 1, the pump according to the invention is shown in its housing in plan view without cover. The
In Figur 2 ist der Schnitt B-B aus Figur 1 dargestellt. Der Blechtopf 1 ist im Kunststoffgehäuse 11 eingebettet. Der Blechtopf 1 enthält die Rotationsgruppe und damit unter anderem den hier im Querschnitt dargestellten Rotor 7. Die Rotationsgruppe wird durch einen Blechdeckel 40 abgeschlossen. Bei dem Blechtopf 1 ist die Hubkontur, wie in Figur 1 dargestellt, direkt ins Blech eingezogen, und der Blechboden 42 des Blechtopfes bildet die erste axiale Seitenplatte der Rotationsgruppe. Der Deckel 40 besitzt einen Absatz 44, der in den oberen Rand des Blechtopfes 1 hineinragt, der in seiner Außenkontur ebenfalls die Form der Hubkontur hat und der somit die zweite axiale Seitenplatte der Rotationsgruppe darstellt. Zur Verbesserung der Ansaugfähigkeit der Pumpe sind im Saugbereich mehrere radiale Öffnungen 46 und 48 in den Blechtopf 1 eingebracht. Die Ansaugöffnungen 46 und 48 münden dabei in die Ansaugkanäle 29 und 13, welche in Figur 1 in Aufsicht dargestellt sind.In Figure 2, the section B-B of Figure 1 is shown. The
In Figur 3 ist vergrößert die Gestaltung des Blechtopfes 1 im Kunststoffgehäuse 11 und der Rotor 7 dargestellt. Man erkennt, dass der Blechtopf 1 an seinem oberen Ende eine Abrundung 50 aufweist, welche durch den Tiefziehvorgang fertigungstechnisch bedingt ist. Der Rotor 7 weist an seinen Seitenflächen zwei Nuten 52 auf, in die ein so genannter Kaltstartring 54 eingreift. Der Kaltstartring 54 ist aus dem Blechtopf 1 ausgeklinkt oder eingeprägt und besitzt in verkleinertem Maßstab ebenfalls die Form der Hubkontur. Dieser Kaltstartring greift damit innerhalb der Rotornuten 52 unter die Flügel und hebt sie entlang des Konturverlaufes soweit an, dass sie annähernd am Konturring gleiten und abdichten, auch wenn die Flügel nicht durch Fliehkräfte oder durch zusätzliche Druckkräfte unter dem Flügel herausgepresst werden. Somit ist schon bei Kaltstart und niedrigen Drehzahlen ein sicheres Anliegen der Flügelköpfe am Konturring gewährleistet.In Figure 3, the design of the
In Figur 4 ist insbesondere im Detail das Zusammenspiel des Blechtopfes 1 mit dem Blechdeckel 40 dargestellt. Fertigungsbedingt ist durch den Tiefziehvorgang beim Blechtopf 1 die Abrundung 50 verursacht, welche aber als Abdichtfläche oder Lauffläche für die Flügel problematisch wäre. Daher besitzt der Blechdeckel 40, der als flaches Bauteil mit einem anderen Fertigungsverfahren als dem Tiefziehen hergestellt sein kann, eine scharfkantigere Umformung des Absatzes 44, welche die Abrundung 50 überdeckt und damit eine hinreichende Abdichtung der Rotationsgruppe auf der Oberseite des Rotors 7 und den Flügelköpfen gewährleistet. Damit sind auch die Flügel innerhalb des rechtwinkligen Rotationsgruppenraumes mit ihren Seitenwänden und ihrem Flügelkopf hinreichend dichtend untergebracht.In Figure 4, the interaction of the
In Abbildung 5 ist im Querschnitt die Rotationsgruppe und das Temperaturschaltventil dargestellt. Gleiche Bauteile sind mit gleichen Bezugszeichen versehen und sollen hier zur Vermeidung von Wiederholungen nicht noch einmal erläutert werden. Das Temperaturschaltventil ist in dieser Darstellung durch erhöhte Temperatur des Schmieröls ausgefahren und verschließt mit seinem Ventilkörper 25 eine Öffnung 56 im Druckbereich. Das führt dazu, dass die Druckniere 15.1 aus Figur 1 nicht in den drucklosen Umlauf des Kanals 13 fördern kann und damit über ein Rückschlagventil 64, welches später noch genauer dargestellt wird, in den Druckkanal 66 fördert, wodurch beide Drucknieren den Schmierölbedarf des Verbrennungsmotors versorgen. Das Temperaturschaltventil 19 ist mit dem Gehäuse des Dehnstoffkörpers 21 in einem separaten Deckel 62 untergebracht, wobei sich das Dehnstoffelementgehäuse 21 mit einer so genannten Überhubfeder 58 an einem Steg 60 des Deckels 62 abstützt. Die Überhubfeder 58 sichert das Dehnstoffelement und das Gehäuse gegen Überdehnung durch weitere Temperaturerhöhung und Ausdehnung des Dehnstoffelementes, was folgendermaßen funktioniert: Zunächst wird bei Temperaturerhöhung das Dehnstoffelement die Betätigungsstange 23 ausfahren gegen die Kraft der Feder 27 und damit mit dem Ventilkörper 25 die Drucköffnung 56 verschließen. Die Feder 27, welche als Rückstellfeder nach dem Abkühlen für das Dehnstoffelement dient und das Temperaturschaltventil wieder in Öffnungsstellung bringt, ist von einem Federtopf 68 umgeben, der hier gleichzeitig als Führung für die Stange 23 dient. Findet bei geschlossenem Temperaturschaltventil jetzt eine weitere Ausdehnung des Dehnstoffelementes statt, so kann das Dehnstoffelement gegen die Kraft der Überhubfeder 58 nach hinten gegen den Anschlag 60 ausweichen und somit Zerstörungen des Dehnstoffelementes oder des das Dehnstoffelement abstützenden Gehäuseteils vermeiden.Figure 5 shows in cross section the rotation group and the temperature switching valve. The same components are provided with the same reference numerals and will not be explained again here to avoid repetition. The temperature switching valve is extended in this illustration by increased temperature of the lubricating oil and closes with its
In Abbildung 6 ist das Temperaturschaltventil im geöffneten, d.h. im abgekühlten Zustand dargestellt. Der Ventilschließkörper 25 hat sich von der radialen Drucköffnung 56 des Blechtopfes 1 entfernt, und das Drucköl aus dem Bereich 15.1 kann über die Öffnung 56 nun in den Kanal 13 zum drucklosen Umlauf bis zur Ansaugniere 17.2 aus Figur 1 strömen. Der Federtopf 68 dient auch hier zur Führung des Betätigungsstiftes 23 des Temperaturschaltventils. Die Rückstellfeder 27 hat über den Federtopf 68 den Betätigungsstift und das abgekühlte Dehnstoffelement zurückgedrückt.In Figure 6, the temperature switching valve is in the open, i. shown in the cooled state. The
In Figur 7 ist die Rotationsgruppe aus der Figur 1 entfernt, so dass man in einem darunterliegenden Druckkanal 70 die Anordnung des Rückschlagventils 64 erkennen kann. Der Druckkanal 70 und das Federblatt 72 des Rückschlagventils 64 sind der Hubkontur angepasst, so dass das Federblatt 72 des Rückschlagventils 64 die Druckniere 15.1 aus Figur 1 verschließen kann. Das Rückschlagventil 64 ist mittels eines Kunststoffstiftes 74 im Gehäuse 11 gelagert und wird nach Einsetzen des Blechtopfes durch diesen gegen das Kunststoffgehäuse fixiert.In Figure 7, the rotation group is removed from the figure 1, so that one can recognize the arrangement of the
Figur 8 zeigt den Schnitt D-D aus Figur 7 und damit den Hubendanschlag 76 des Ventilblattes 72. Figur 9 zeigt im Schnitt C-C den Kunststoffstift 74, welcher das Federblatt 72 im Kunststoffgehäuse 11 lagert.Figure 8 shows the section D-D of Figure 7 and thus the
In Figur 10 ist im Querschnitt eine Alternative des Kaltstartrings 54.1 zu der Darstellung des Kaltstartrings 54 in Figur 3 dargestellt. Die Kaltstartkontur 54.1 ist durch Ausprägung aus dem Blechtopf 1 heraus gedrückt und greift somit unter den Flügel 3, welcher im Hubring 7 gelagert ist, und führt den Flügel 3 somit an der Hubkontur des Blechdeckels 1 entlang.FIG. 10 shows in cross-section an alternative of the cold-start ring 54.1 to the illustration of the cold-
In Figur 11 ist eine weitere Variante der Kaltstartkontur 54.2 dargestellt, welche durch Materialverdrängung aus dem Blechtopf 1 hergestellt ist und somit auch hier den Flügel 3 gegen die Kontur führen kann.In Figure 11, a further variant of the cold start contour 54.2 is shown, which is made by material displacement from the
Bei der Montage wird der Blechdeckel 40 auf den Blechtopf 1 (vgl. Figur 2), aufgeschoben und anschließend durch eine Schweißoperation befestigt. Dieses Vorgehen bietet mehrere Vorteile:
- 1. Die axialen Toleranzen der Topftiefe können eliminiert werden, wenn das Aufschieben des Deckels 40 weggesteuert erfolgt.
- 2. Durch den
Tiefziehvorgang am Blechtopf 1 entsteht beim Übergang von der Hubkontur zum Blechflansch ein Radius 50 (vgl. Figur 3), der für die Volumetrie der Rotationsgruppe schädlich wäre. Bei Aufschieben aufden Absatz 44 desDeckels 40 wird derRadius 50 aus dem Funktionsbereich der Rotationsgruppe entfernt. Ein Vorteil der gekapselten Rotationsgruppe ist, dass nun alle wichtigen Konturen für die Steuerzeiten integriert sind und die Positionierung der kompletten Rotationsgruppeim Kunststoffgehäuse 11 größere Toleranzen zulassen kann.
- 1. The axial tolerances of the pot depth can be eliminated if the sliding of the
cover 40 is carried out path-controlled. - 2. Due to the deep-drawing process on the
sheet metal pot 1, a radius 50 (see FIG. 3), which would be detrimental to the volumetry of the rotational group, is produced during the transition from the stroke contour to the sheet metal flange. When sliding onto theshoulder 44 of thecover 40, theradius 50 is removed from the functional area of the rotation group. An advantage of the encapsulated rotation group is that now all important contours for the timing are integrated and the positioning of the complete rotation group in theplastic housing 11 can allow greater tolerances.
Im Druckbereich der geschalteten Stufe sind axiale und radiale Öffnungen vorgesehen. Die Öffnungen in radialer Richtung mit dem Temperaturschaltventil oder einem Druckschaltventil werden für den drucklosen Umlauf benutzt. Dabei wird das Öl aus der Druckseite wieder in den Saugraum für die Ansaugung der nächsten Saugstufe herausgespült. Aufgrund der so gewonnenen Kanalführung ergeben sich nur geringe Strömungsverluste durch Umlenkung.In the pressure range of the switched stage axial and radial openings are provided. The openings in the radial direction with the temperature switching valve or a pressure switching valve are used for the non-pressurized circulation. The oil from the pressure side is flushed out again into the suction chamber for the suction of the next suction stage. Due to the channel guide thus obtained, only small flow losses result by deflection.
Der große Vorteil dieses Pumpenaufbaus mit entsprechenden radialen und axialen Öffnungen sind die Reduzierung des benötigten Bauraums sowie die Kostensenkung.The big advantage of this pump design with corresponding radial and axial openings are the reduction of the required installation space as well as the cost reduction.
Claims (18)
- Pump by way of example for supplying lubricating oil in an internal combustion engine, more particularly a multi-chamber vane-type pump in which the rotation module has a rotor (7) with at least radially movable vanes (3), a chamber contour along which the vanes (3) slide with sealing action by their vane heads, and two axial side covers, such as side plates or housing walls, wherein the chamber contour and a first axial side plate are formed by a sheet steel pot (1) and a second axial side plate is formed by a sheet steel cover (40), characterised in that the sheet metal cover (40) has an imprinted shoulder (44) whose external contour has the shape of the chamber contour.
- Pump according to claim 1, characterised in that the sheet metal pot (1) can be manufactured by deep drawing.
- Pump according to claim 1 or claim 2, characterised in that the sheet metal cover (40) can be manufactured by fine-stamping or fine-cutting.
- Pump according to claim 1 to claim 3 characterised in that the suction intake openings are formed by radial openings (46, 48) in the sheet metal pot (1).
- Pump according to claim 1 to claim 4, characterised in that the outlet openings are formed by axial openings (15.1, 15.2) (pressure kidneys) and where applicable by at least one radial opening (56) in the sheet metal pot.
- Pump according to claim 5, characterised in that the radial outlet opening (56) can be closed by a temperature control valve (19) or a pressure control valve and thus produces a switchable delivery zone.
- Pump according to claim 6, characterised in that the temperature control valve (19) has an overtravel spring (58).
- Pump according to one of the preceding claims, characterised in that the sheet metal pot (19) of the rotation module and where applicable the temperature control valve (19) or pressure control valve are integrated in a plastics housing (11).
- Pump according to claim 8, characterised in that the plastics housing (11) is injection moulded as a finished unit and therefore requires no finishing work.
- Pump according to claim 6 to claim 9, characterised in that the axial outlet opening (15.1) of the switchable delivery zone can be closed by a spring tongue non-return valve (64).
- Pump according to claim 10, characterised in that the spring tongue non-return valve has the shape of the chamber contour curvature.
- Pump according to claim 10 or claim 11, characterised in that the spring tongue non-return valve (64) is mounted on a pivot (74) made of plastics.
- Pump according to claim 10 to claim 12, characterised in that a chamber-limiting stop (76) in the plastics housing (11) is assigned to the spring tongue non-return valve (64).
- Pump according to one of the preceding claims, characterised in that the sheet metal pot (1) has a notched or imprinted cold start ring (54, 54.1, 54.2).
- Pump according to claim 14, characterised in that the rotor (7) has grooves or indentations to hold the cold start ring (54, 54.1, 54.2).
- Pump according to claim 14 or claim 15, characterised in that the sheet metal cover (40) has a notched or imprinted cold start ring.
- Pump according to one of the preceding claims, characterised in that the sheet metal cover (40) has imprinted mock pressure kidneys.
- Pump according to one of claims 6 to 17, characterised in that the radial outlet opening (56) of the switchable delivery zone opens into a channel (13) which opens directly via the shortest route into the suction intake area (17.2) of the second non-switchable delivery zone.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10323572 | 2003-05-26 | ||
PCT/DE2004/001032 WO2004109111A1 (en) | 2003-05-26 | 2004-05-15 | Vane-cell pump provided with a deep-drawn metal-sheet pot |
Publications (2)
Publication Number | Publication Date |
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EP1631745A1 EP1631745A1 (en) | 2006-03-08 |
EP1631745B1 true EP1631745B1 (en) | 2007-11-07 |
Family
ID=33494749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP04733242A Expired - Lifetime EP1631745B1 (en) | 2003-05-26 | 2004-05-15 | Vane-cell pump provided with a deep-drawn metal-sheet pot |
Country Status (8)
Country | Link |
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US (1) | US20070148011A1 (en) |
EP (1) | EP1631745B1 (en) |
JP (1) | JP2007500309A (en) |
KR (1) | KR20060019557A (en) |
CN (1) | CN100408858C (en) |
AT (1) | ATE377710T1 (en) |
DE (1) | DE502004005440D1 (en) |
WO (1) | WO2004109111A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009109282A1 (en) * | 2008-03-01 | 2009-09-11 | Ixetic Hückeswagen Gmbh | Vacuum pump housing cover |
DE102009055945B4 (en) * | 2009-11-26 | 2018-10-04 | HELLA GmbH & Co. KGaA | Vane pump |
DE102013213051A1 (en) * | 2013-06-18 | 2014-12-18 | Continental Automotive Gmbh | Conveyor for conveying oil from a reservoir to a transmission of a motor vehicle |
DE102014102643A1 (en) * | 2014-02-27 | 2015-08-27 | Schwäbische Hüttenwerke Automotive GmbH | Rotary pump with plastic composite structure |
EP3393702A1 (en) * | 2015-12-23 | 2018-10-31 | SABIC Global Technologies B.V. | Hybrid metal-plastic parts and process for manufacturing the same |
CN105673485B (en) * | 2016-01-15 | 2017-09-19 | 沈阳天朗艾尔压缩机有限公司 | A kind of sliding-vane air compressor |
US11396811B2 (en) * | 2017-12-13 | 2022-07-26 | Pierburg Pump Technology Gmbh | Variable lubricant vane pump |
CN117759534B (en) * | 2024-02-22 | 2024-04-26 | 苏州英磁新能源科技有限公司 | Self-adaptive variable capacity vane pump |
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US940246A (en) * | 1908-08-24 | 1909-11-16 | John C Hagerty | Rotary engine. |
DE2221541A1 (en) * | 1972-05-03 | 1973-11-22 | Bosch Gmbh Robert | LEAF COMPRESSOR |
JPS5797091A (en) * | 1981-10-01 | 1982-06-16 | Kayaba Ind Co Ltd | Vane pump |
SE457010B (en) * | 1983-09-17 | 1988-11-21 | Glyco Antriebstechnik Gmbh | ADJUSTABLE LUBRICANT PUMP |
US4656710A (en) * | 1985-08-19 | 1987-04-14 | Noman Maciejewski | Method of making a hydraulic pump housing |
FR2660221B1 (en) * | 1990-03-31 | 1995-07-13 | Barmac Luk Automobiltechnik Gm | METHOD FOR MANUFACTURING A SHEET CASING BY DEEP STAMPING. |
US5310326A (en) * | 1992-09-14 | 1994-05-10 | Mainstream Engineering Corporation | Rotary compressor with improved bore configuration and lubrication system |
CN2148837Y (en) * | 1992-10-07 | 1993-12-08 | 大连液压件厂 | Steering power-assisted pump |
DE4331489A1 (en) * | 1993-09-16 | 1995-03-23 | Sihi Gmbh & Co Kg | Liquid ring gas pump in block design |
CA2131081C (en) * | 1993-09-16 | 2004-01-20 | Udo Segebrecht | Liquid ring gas pump |
US5642991A (en) * | 1996-03-11 | 1997-07-01 | Procon Products | Sliding vane pump with plastic housing |
DE19927400A1 (en) * | 1998-06-24 | 1999-12-30 | Luk Fahrzeug Hydraulik | Hydraulic advancing unit, eg for use in vehicles |
DE19913632C2 (en) * | 1999-03-25 | 2001-02-08 | Siemens Ag | Liquid ring pump |
-
2004
- 2004-05-15 WO PCT/DE2004/001032 patent/WO2004109111A1/en active IP Right Grant
- 2004-05-15 CN CNB2004800147405A patent/CN100408858C/en not_active Expired - Fee Related
- 2004-05-15 DE DE502004005440T patent/DE502004005440D1/en not_active Expired - Lifetime
- 2004-05-15 US US10/557,513 patent/US20070148011A1/en not_active Abandoned
- 2004-05-15 EP EP04733242A patent/EP1631745B1/en not_active Expired - Lifetime
- 2004-05-15 KR KR1020057022563A patent/KR20060019557A/en not_active Application Discontinuation
- 2004-05-15 AT AT04733242T patent/ATE377710T1/en not_active IP Right Cessation
- 2004-05-15 JP JP2006529599A patent/JP2007500309A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CN100408858C (en) | 2008-08-06 |
CN1795333A (en) | 2006-06-28 |
JP2007500309A (en) | 2007-01-11 |
US20070148011A1 (en) | 2007-06-28 |
ATE377710T1 (en) | 2007-11-15 |
DE502004005440D1 (en) | 2007-12-20 |
KR20060019557A (en) | 2006-03-03 |
WO2004109111A1 (en) | 2004-12-16 |
EP1631745A1 (en) | 2006-03-08 |
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