CN101956702B - Positive displacement pump - Google Patents
Positive displacement pump Download PDFInfo
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- CN101956702B CN101956702B CN2009102080512A CN200910208051A CN101956702B CN 101956702 B CN101956702 B CN 101956702B CN 2009102080512 A CN2009102080512 A CN 2009102080512A CN 200910208051 A CN200910208051 A CN 200910208051A CN 101956702 B CN101956702 B CN 101956702B
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- passage
- positive displacement
- displacement pump
- branch road
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C15/062—Arrangements for supercharging the working space
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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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
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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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
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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
- 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
- F04C2210/00—Fluid
- F04C2210/14—Lubricant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
A positive displacement pump for reducing cavitation tendency can be assistantly driven by injection flow like water-jet pump. According to the invention, the positive displacement pump directs to only one of the two channel branches (21, 22) asymmetrically stemed from a main channel (20). In such case, The inflow axis of the driving channel (30) generated driving flow tranverses the inlet (23) of the other channel branch (21) and is directed at the second channel branch (22), so that reasonable distribution of inflow in the main channel (20) is ensured when flowing axle (31) ejects driving flow especially at a high conveying speed. Most of the driving flow is sent to the second channel branch (22). The positive displacement pump can be produced in batches and is suitable for inner gear pump or vane pump on a vehicle for conveying lubricating oil.
Description
Technical field
The present invention relates to positive displacement pump, relate in particular to for internal gear pump or the vane pump of carrying lubricant oil at automobile.
Background technique
In order to reduce the cavitation tendency, the situation that the suction stream of positive displacement pump can be similar in the water jet pump additionally promotes with propulsive jet like that.Can advantageously from the fluid of pumping pressure side, generate this propulsive jet in the case.FR2 443 598 has described this principle intuitively according to internal gear pump.
DE44 36 505 A1 disclose the another kind of internal gear pump that utilizes this principle.Nozzle by supercharging channel end place produces propulsive jet, and this propulsive jet only points to the suction kidney of this pump.The supercharging passage can be cast with nozzle and finish in pump casing.
DE41 38 516 A1 disclose a kind of vane pump, and the propulsive jet of employing sparger additionally promotes the suction stream of this vane pump.This sparger is inserted the suction passage of pump coaxially as independent parts.This suction passage extends and is branched off into there the bilateral packing of T shape in the outer ring of vane pump.Sparger radially points to this outer ring.Also should rotate this sparger, so as in addition and suction stream come together to guide propulsive jet.In the improvement project by DE198 36 628 A1 and disclosed this type of vane pump of DE 100 37 080 A1, for sparger arranges two jets, wherein, these two propulsive jets point to the channel branch of mirror image symmetric arrangement.
Summary of the invention
Task of the present invention is, a kind of positive displacement pump according to the illustrated principle work of beginning is provided, and it has solved preferably in batch manufacturability, high efficiency and the compromise between the suction characteristic of the low cavitation of wide transfer rate scope.
Adopt positive displacement pump of the present invention to solve this task.Therefore, this positive displacement pump is configured to fluid is transported on the pressure side from the suction side and have shell, in this shell, also comprise for the rotation squeeze the unit squeeze the chamber (
) and the suction passage system.This suction passage system comprises main passage and the first and second passage branch roads.Extend to deep inside from the suction connecting end on the shell main passage, and wherein, the first passage branch road separates through entrance from the main passage angledly and the main passage extends into the second channel branch road subsequently.In subsequent process, these two passage branch roads enter and squeeze the chamber.In addition, in shell, also comprise the promotion passage that enters the suction passage system, preferably in the zone of entrance.This promotion passage is configured on the pressure side fluid is accelerated into propulsive jet.Can promote the fluid of suction side by this propulsive jet.According to being characterised in that especially of positive displacement pump of the present invention, the inflow axis that promotes passage crosses the entrance in the first passage branch road and points to the second channel branch road.In the case, this flow into axis given in advance the inceptive direction of propulsive jet.
The compared with prior art unique layout of this inflow axis is based on following consideration with aliging: if the suction passage of positive displacement pump comes out from the outside to the deep inside extension and from angled ground, main passage branch, can have following situation so: compare with the passage branch road that continue to extend at branch line, the passage branch road that branch of institute comes out is more suitable in flowing can being designed to be usually aspect cross section and the bottom land.More precisely particularly has how operational structure space because of common for the passage branch road that branch of outside institute comes out than the passage branch road that on branch line, continues to extend to deep inside.Therefore, rule of thumb, the passage branch road that continues to extend particularly is disadvantageous under the situation of high transfer rate and therefore may be supplied with by halves.Thus, the oil stream in the passage branch road that the oily stream in the passage branch road that this continuation is extended may come out than institute branch earlier tends to cavitation, namely tends to the deposition of bubble.In addition, this type of asymmetric branch shows in test, even in the channel branch situation that designs comparably on flow technique, the passage branch road that branch of institute comes out is advantageously more drawn suction stream near the entrance of some with itself and suction connecting end usually from the main passage.
Based on these understanding and advantageously, on purpose propulsive jet is only pointed in two passage branch roads and the inflow axis that promotes passage is set for this reason, so that this inflows axis crosses the entrance of the first passage branch road that branch of institute comes out and points to the second channel branch road of continuation extension.Can particularly under high transfer rate situation, be conducive to distribute suitably at the branch line place suction stream and basically the volume of propulsive jet all be sent into the second channel branch road based on these unique measures.Therefore, effectively should the right possible cavitation that advantageously in the second channel branch road, produces and prevented cavitation noise and cavitation erosion thus.In addition, so the propulsive jet of implementing can be integrated in simple mode, especially is cast to finish in the preferred shell of being made up of a plurality of parts of pump.In the case, promoting passage can save the mode of structure space and extend on the next door, main passage and promote passage and the main passage can be arranged in the case member.In addition, the promotion passage can terminate in before ingress or this entrance by rights or enter the suction passage system.At last, enter the high efficiency that the passage branch road that squeezes the chamber can be reached positive displacement pump by two.
Although because its batch manufacturability is specially adapted to carry internal gear pump and the vane pump of lubricant oil in automobile, can be used for other pump type and application target according to positive displacement pump of the present invention equally.Positive displacement pump can also be crescent gear pump, external gear pump, revolving valve vacuum pump or the pendulum valve pump with constant or variable delivered volume, and these pumps have at least one equally around the element that squeezes of running shaft rotation.
Description of drawings
Below further specify embodiments of the invention with reference to the accompanying drawings.Accompanying drawing illustrates:
Fig. 1 shows the schematic positive displacement pump in the oil circulation;
Fig. 2 shows the detail section according to the positive displacement pump of Fig. 1; And
Fig. 3 shows the exploded view according to the positive displacement pump of Fig. 1.
Embodiment
The positive displacement pump that schematically shows among Fig. 1 is connected in the oil circulation and has shell 1, in this shell 1, comprise for the rotation that is not shown specifically squeeze the unit squeeze chamber 2.Like this squeeze the especially rotor-blade unit of the gear train of internal gear pump or gears for internal gear pump group, vane pump of unit, but also can be have at least one around running shaft 3 rotations squeeze element each squeeze the unit.
Except positive displacement pump, oil circulation also comprises oil groove 4 and will come lubricated complete sets of equipment 5 with oil, and this complete sets of equipment 5 is internal-combustion engine or the gearbox in the automobile particularly.By positive displacement pump, the oil in the oil circulation is transported on the pressure side from the suction side.The suction side comprises oil groove 4 with the suction lead 6 that oil groove 4 is connected with the suction connecting end 7 at shell 1 place and comprises the suction passage system that is integrated in the shell 1 in addition.Oil circulation on the pressure side have a catheter pressure 8, this catheter pressure 8 at first in the enclosure portion from the pressure connecting terminal 9 that squeezes chamber 2 and extend to shell 1 and continue to extend into complete sets of equipment 5 in housing exterior.Overvoltage conduit 10 also belongs on the pressure side in addition, and this overvoltage conduit 10 branch from catheter pressure 8 comes out and is connected with another connecting end 12 of shell 1.Simple pressure regulator valve 11 connects into overvoltage conduit 10, opens during this pressure regulator valve 11 is regulated pressure in Overpressure of a safety valve conduit 8 predetermined value.The conduit 13 that turns back to oil groove 4 from complete sets of equipment 5 has sealed and should circulate by oil.
The suction passage system that is included in the shell 1 of positive displacement pump comprises main passage 20, first passage branch road 21 and second channel branch road 22.Must recognize that radially extend to deep inside from the suction connecting end 7s of shell 1 outside main passage 20, namely more close to the running shaft 3 that squeezes chamber 2.In the case, first passage branch road 21 at first from the main passage 20 through entrances 23 roughly meet at right angles ground branch come out.Preferably, this means into the angle in 90 ° ± 15 ° scopes and be roughly parallel to running shaft 3 in addition in the present embodiment.After this, main passage 20 directly continues into second channel branch road 22 or almost continues into second channel branch road 22 in the present embodiment point-blank at transition 24 places.In the case, transition 24 advantageously is characterized in the oil that comes autonomous channel 20 in the suction passage system and which position only flows into second channel branch road 22 from.
In addition, as seen, two passage branch roads 21 and 22 enter at axially relative both sides 14a and 14b place and to squeeze chamber 2 in Fig. 1, and wherein, inflow region is implemented as suction kidney 25 and 26.In addition, first passage branch road 21 the external shaft that squeezes chamber 2 to through and correspondingly from the side 14a change to side 14b.In contrast, second channel branch road 22 only extends at the side 14a that squeezes chamber 2.In addition, first passage branch road 21 has in its narrowest position than second channel branch road 22 bigger cross section all the time.This can also depend on structure space, because for example outwards squeeze chamber 2 and have how operational structure space than inwardly approaching in shell 1.Because the bigger cross section of first passage branch road 21 and because the entrance 23 of first passage branch road 21 in the front of the transition 24 that is used for second channel branch road 22, thereby first passage branch road 21 rule of thumb advantageously aspirates.This is confirmed by corresponding test.Particularly under the situation of the transfer rate that increases, second channel branch road 22 is compared with first passage branch road 21, in case of necessity the oil of Que Faing at first feeder current go into second channel branch road 22.Therefore, although second channel branch road 22 is long and have more bending, the oil stream in second channel branch road 22 earlier tends to the deposition of bubble than the stream of the oil in the first passage branch road 21.For this is suppressed, in shell 1, in the zone of main passage 20, comprise so-called promotion passage 30.This promotion passage is configured on the pressure side oil just in time is accelerated into propulsive jet as described below like that.The situation that can be similar in the water jet pump by this propulsive jet promotes the oil of suction side like that.
Fig. 2 further shows according to the suction passage system in the positive displacement pump of Fig. 1 in perpendicular to the detail section of running shaft 3 and promotes passage 30.Must recognize that again main passage 20 is radially extended to deep inside from suction connecting end 7s.For this reason, the inner region that shows positive displacement pump according to the circumference shown in broken lines that squeezes chamber 2.Illustrated that first passage branch road 21 is how 20 axial separation are come out from the main passage at entrance 23 places in addition again or be separated to the plan.Illustrate in addition, main passage 20 is how directly to change in the second channel branch road 22 at transition 24 places after this." after this " be illustrated in back about the entrance 23 on the direction of suction stream 28 in the main passage 20.Then, second channel branch road 22 after transition 24 same axially or be separated into suction kidney 25 with entering plan.
Promoting passage 30 separates by dividing plate 27 with main passage 20.Promote passage 30 and main passage 20 and extend abreast side by side from suction connecting end 7 and connecting end 12, up to promote passage 30 more crooked and in this and main passage 20 into about 13 ° acute angle and directly before entrance 23, enter the suction passage system at last.Can be clear that in the case, promote passage 30 and dwindle into cross section 32 towards its inflow direction.This cross section that dwindles 32 act as for the nozzle that promotes stream 29.Promotion stream 29 is promoted passage 30 by the overvoltage conduit 10 under the overpressure situation from the pressure side sending into of positive displacement pump and is penetrated as propulsive jet in the inflow that promotes passage 30 or the end in cross section 32.This propulsive jet that is not shown specifically has than suction stream 28 remarkable higher flow velocitys and suction stream 28 is disconnected.In the case, the inceptive direction of the inflow axis 31 that promotes passage 30 propulsive jet given in advance under the situation that is independent of the deflection that may occur after penetrating.In the present embodiment, the imagination of the center line by the cross section 32 that dwindles prolongs to obtain flowing into axis 31.
If positive displacement pump is carried more oil and therefore special cavitation tendency increase in second channel branch road 22 under the speed conditions that rises, oil is promoted passage 30 from the pressure side sending into of positive displacement pump so.For this reason, promote passage 30 on the pressure side being connected by pressure regulator valve 11 and positive displacement pump.Adjusting pressure on the pressure side is added to pressure regulator valve 11.When regulating the predetermined value of pressure in Overpressure of a safety valve conduit 8, pressure regulator valve 11 is opened, and promotes passage 30 so that oil flows to connecting end 12 by overvoltage conduit 10 and enters from catheter pressure 8.This oil or promote that stream 29 is foregoing to be accelerated into propulsive jet and to send into the suction passage system with unique mode like that in promoting passage 30.Therefore from Fig. 1 and Fig. 2 as seen, the inflow axis 31 that promotes passage 30 cross in the first passage branch road 21 entrance 23 and in transition 24 sensing second channel branch road 22.Axis 31 penetrates propulsive jet and major part process above entrance 23 along flowing into.Do not have thus propulsive jet or only the propulsive jet volume of a less relatively part be admitted to first passage branch road 21.In contrast, second channel branch road 22 is loaded into with being attached and is preferably greater than most propulsive jets of 80% or 90%.In addition as can be seen from Fig. 1, flow into axis 31 and cross entrance 23 in the mode that separates.That is to say, flow into axis 31 horizontal expansion above the opening of entrance 23 at certain intervals.Advantageously, propulsive jet can be by this way carries out different acceleration to the fluid layer that should flow through of suction stream 28 or with fluid layer that the opening of entrance 23 remotely flows through at a distance above entrance 23.Thus, propulsive jet can on purpose promote these fluid layers in the second channel branch road 22.As can be seen from Fig. 1, flow into axis 31 and cause in half cross section relative with entrance 23 of main passage 20, crossing entrance 23 prejudicially.Replacedly or replenish ground, flow into axis 31 to arrange with the 20 one-tenth one low-angle modes in main passage so that flow into axis 31 no longer in present embodiment with constant interval but cross entrance 23 and propulsive jet with the interval that increases and be similar to situation injection above entrance 23 like that in trench.In addition, flow into axis 31 can also than shown in farther mode cross entrance 23 prejudicially.Especially main passage 20 in 1/3rd cross sections on entrance 23 opposites.In any case, based on this unique jet guiding, particularly suction stream 28 is carried out suitable distribution and additionally all loads second channel branch road 22 basically with the oil of propulsive jet having supported under the situation of high transfer rate in main passage 20.Through after the transition 24, this propulsive jet deflects at the wall place of playing guiding device 33 effects of second channel branch road 22 and sucks kidney 25 at propulsive jet.For this reason, this guiding device 33 that is implemented as wall is mounted obliquely within the opposite that flows into axis 31 with suitable manner.
According to being on the other hand of the positive displacement pump of Fig. 1, the shell 1 of positive displacement pump is implemented as the cast casings of being made up of three parts with two corresponding separating surfaces 15 and 16.As especially as can be seen from Fig. 3, the housing parts 19 of bottom comprises a part of squeezing chamber 2, first passage branch road 21 and sucks kidney 26 in the drawings.Middle housing parts 18 usefulness separating surfaces 16 have axially met the boundary to be squeezed chamber 2 and comprises main passage 20, entrance 23, second channel branch road 22, suction kidney 25 and the remaining part that promotes passage 30 and first passage branch road 21.The housing parts 17 of top is implemented as lid and has sealed main passage 20 and promoted passage 30.Importantly, main passage 20 and the subsequent section that promotes passage 30 and entrance 23 and first passage branch road 21 at separating surface 15 places be open wide and can the demoulding from placing at separating surface 15 places.In the case, can together be arranged on housing parts 17 in the present embodiment for the suction connecting end 7 of main passage 20 and for the connecting end 12 that promotes passage 30.It shall yet further be noted that at last alternatively, can also make to promote passage 30 and be different from the suction zone that the position that proposes enters entrance 23, especially enter in the wall of bending of entrance 23.Can make in addition promote passage 30 in entrance 23 and/or entrance 23 outstanding (fortragen) some, especially in the mode of sleeve pipe.
Claims (26)
1. one kind is used for fluid is transported on the pressure side positive displacement pump from the suction side, it has shell (1), in described shell (1), comprise for rotation squeeze the unit squeeze chamber (2) and suction passage system, described suction passage system comprises main passage (20), first passage branch road (21) and second channel branch road (22), wherein, extend to deep inside from the suction connecting end (7) of described shell (1) described main passage (20), described first passage branch road (21) is separated through entrance (23) from described main passage (20) angledly, described main passage (20) continues into described second channel branch road (22) subsequently, described first passage branch road (21) and described second channel branch road (22) enter the described chamber (2) of squeezing, described positive displacement pump also has and is included in the described shell (1), enter described suction passage system, be used for described fluid on the pressure side is accelerated into the promotion passage (30) of propulsive jet, can promote the fluid of described suction side by described propulsive jet, it is characterized in that the inflow axis (31) of described promotion passage (30) crosses the entrance (23) in the described first passage branch road (21) and points to described second channel branch road (22).
2. positive displacement pump as claimed in claim 1 is characterized in that, radially extend to deep inside from the outside suction connecting end (7) of described shell (1) described main passage (20).
3. positive displacement pump as claimed in claim 1 is characterized in that, (14a 14b) locates to enter the described chamber (2) of squeezing to described first passage branch road (21) in relative side with described second channel branch road (22).
4. positive displacement pump as claimed in claim 1 is characterized in that, described first passage branch road (21) is separated from described main passage (20) to become the angle in 90 ° ± 15 ° scopes.
5. as claim 3 or 4 described positive displacement pumps, it is characterized in that the described chamber of squeezing of described first passage branch road (21) extend past.
6. positive displacement pump as claimed in claim 1 is characterized in that, the cross section of described first passage branch road (21) in its narrowest position all the time greater than the cross section of described second channel branch road (22).
7. positive displacement pump as claimed in claim 1 is characterized in that, described main passage (20) locate to continue into described second channel branch road (22) in transition (24).
8. positive displacement pump as claimed in claim 1 is characterized in that, described promotion passage (30) dwindles towards its inflow direction.
9. positive displacement pump as claimed in claim 1 is characterized in that, described promotion passage (30) enters described suction passage system in the zone of described entrance (23).
10. as claim 1 or 9 described positive displacement pumps, it is characterized in that described suction passage system is located or entered to described promotion passage (30) before or at described entrance (23) at described entrance (23) in the wall of described promotion passage (30).
11., it is characterized in that described promotion passage (30) is given prominence in described entrance (23) or given prominence in described entrance (23) top as claim 1 or 9 described positive displacement pumps.
12. positive displacement pump as claimed in claim 1 is characterized in that, extend abreast described promotion passage (30) and described main passage (20).
13., it is characterized in that described promotion passage (30) is to enter described suction passage system with the acutangulate mode in described main passage (20) as claim 1 or 12 described positive displacement pumps.
14. positive displacement pump as claimed in claim 1 is characterized in that, described inflow axis (31) crosses described entrance (23) in the mode that separates.
15. positive displacement pump as claimed in claim 14, it is characterized in that described inflow axis (31) crosses described entrance (23) facing in half cross section of described entrance (23) and/or facing in 1/3rd cross sections of described entrance (23) of described main passage (20) of described main passage (20).
16., it is characterized in that described inflow axis (31) crosses described entrance (23) with interval constant or that increase as claim 14 or 15 described positive displacement pumps.
17. positive displacement pump as claimed in claim 7 is characterized in that, the inflow axis (31) of described promotion passage points to described second channel branch road (22) in transition (24).
18., it is characterized in that described propulsive jet locates to deflect into suction kidney (25) at guiding device (33) afterwards in described transition (24) as claim 7 or 17 described positive displacement pumps.
19. positive displacement pump as claimed in claim 1, it is characterized in that described shell (1) comprises a plurality of housing parts (17,18,19), wherein said promotion passage (30) and described main passage (20) are included in the housing parts (18) in the described housing parts.
20. positive displacement pump as claimed in claim 19 is characterized in that, a described housing parts (18) is cast member, and described main passage (20) and described promotion passage (30) are formed in the described cast member by foundry engieering.
21. positive displacement pump as claimed in claim 20 is characterized in that, described main passage (20) and described entrance (23) and described promotion passage (30) are located at the separating surface (15) of a described housing parts (18) can be by foundry engieering by the demoulding.
22., it is characterized in that a described housing parts (18) locates axially to connect the described chamber (2) of squeezing, boundary at second separating surface (16) as each described positive displacement pump in the claim 19 to 21.
23. positive displacement pump as claimed in claim 1 is characterized in that, described promotion passage (30) on the pressure side is connected with the described of described positive displacement pump by pressure regulator valve (11).
24. positive displacement pump as claimed in claim 23 is characterized in that, described adjusting pressure on the pressure side is added to described pressure regulator valve (11).
25. positive displacement pump as claimed in claim 24 is characterized in that, described pressure regulator valve (11) is opened when surpassing the predetermined value of described adjusting pressure.
26. positive displacement pump as claimed in claim 1, it is characterized in that, described positive displacement pump is internal gear pump, crescent gear pump, external gear pump, revolving valve vacuum pump or the pendulum valve pump with constant or variable delivered volume, and these pumps have at least one around the element that squeezes of running shaft (3) rotation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008052367.4 | 2008-10-20 | ||
| DE102008052367 | 2008-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101956702A CN101956702A (en) | 2011-01-26 |
| CN101956702B true CN101956702B (en) | 2013-08-21 |
Family
ID=42218983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102080512A Expired - Fee Related CN101956702B (en) | 2008-10-20 | 2009-10-19 | Positive displacement pump |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101214054B1 (en) |
| CN (1) | CN101956702B (en) |
| DE (1) | DE102009050143A1 (en) |
| IN (1) | IN2009KO01235A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015209833A1 (en) * | 2015-05-28 | 2016-12-01 | Eckerle Industrie-Elektronik Gmbh | gear machine |
| DE102015112829A1 (en) * | 2015-08-05 | 2017-02-09 | Robert Bosch Automotive Steering Gmbh | Positive displacement pump and hydraulic system |
| DE102016102433B3 (en) * | 2016-02-11 | 2017-05-11 | Steyr Motors Gmbh | Gear pump |
| CN109915258A (en) * | 2019-02-01 | 2019-06-21 | 浙江派尼尔科技股份有限公司 | A kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure and working method |
| CN109826704A (en) * | 2019-02-01 | 2019-05-31 | 浙江派尼尔科技股份有限公司 | A kind of separation lubrication two-stroke brush cutter dynamic structure and working method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4138516A1 (en) * | 1991-11-23 | 1993-05-27 | Luk Fahrzeug Hydraulik | PUMP |
| DE19836628A1 (en) * | 1998-08-13 | 2000-02-17 | Luk Fahrzeug Hydraulik | Pump for vehicle hydraulic systems |
| DE10037080A1 (en) * | 2000-07-27 | 2002-02-14 | Luk Fahrzeug Hydraulik | Pump used in power steering systems for pumping fluids, especially a vane pump, comprises devices provided in the inlet region of the jet chamber and/or the suction channel |
| CN1711420A (en) * | 2002-11-18 | 2005-12-21 | 国际遥距成象系统公司 | Uniform flow displacement pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2443598A1 (en) | 1978-12-08 | 1980-07-04 | Renault | Feed system for hydraulic pump - which relief valve in car gearbox control feeds oil back into intake |
| DE4436505A1 (en) | 1994-10-13 | 1996-04-18 | Zahnradfabrik Friedrichshafen | Automatic transmissions, in particular for motor vehicles |
| JP3874416B2 (en) | 2003-05-02 | 2007-01-31 | 日本ピラー工業株式会社 | Reciprocating pump |
| KR200351357Y1 (en) | 2004-03-05 | 2004-05-20 | 주식회사 청석 | Self-priming pump |
-
2009
- 2009-10-08 IN IN1235KO2009 patent/IN2009KO01235A/en unknown
- 2009-10-19 CN CN2009102080512A patent/CN101956702B/en not_active Expired - Fee Related
- 2009-10-20 KR KR1020090099744A patent/KR101214054B1/en not_active IP Right Cessation
- 2009-10-20 DE DE102009050143A patent/DE102009050143A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4138516A1 (en) * | 1991-11-23 | 1993-05-27 | Luk Fahrzeug Hydraulik | PUMP |
| DE19836628A1 (en) * | 1998-08-13 | 2000-02-17 | Luk Fahrzeug Hydraulik | Pump for vehicle hydraulic systems |
| DE10037080A1 (en) * | 2000-07-27 | 2002-02-14 | Luk Fahrzeug Hydraulik | Pump used in power steering systems for pumping fluids, especially a vane pump, comprises devices provided in the inlet region of the jet chamber and/or the suction channel |
| CN1711420A (en) * | 2002-11-18 | 2005-12-21 | 国际遥距成象系统公司 | Uniform flow displacement pump |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101214054B1 (en) | 2012-12-20 |
| CN101956702A (en) | 2011-01-26 |
| DE102009050143A1 (en) | 2010-07-15 |
| IN2009KO01235A (en) | 2015-08-14 |
| KR20100044122A (en) | 2010-04-29 |
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