CN102844525A

CN102844525A - Vane pump

Info

Publication number: CN102844525A
Application number: CN2011800062816A
Authority: CN
Inventors: 托斯滕·赫勒; 本杰明·佩多克; 维利·施耐德; 德克·埃伦费尔德
Original assignee: Joma Hydromechanic GmbH
Current assignee: Joma Hydromechanic GmbH; Joma Polytec GmbH
Priority date: 2010-01-15
Filing date: 2011-01-04
Publication date: 2012-12-26
Also published as: DE102010000947A1; EP2524111A2; KR20120112790A; WO2011086013A2; WO2011086013A3; US20130022487A1; DE102010000947B4

Abstract

The invention relates to a vane pump comprising a pump housing that has a sleeve-shaped housing body, a floor, and a cover, said floor and cover axially closing the housing body. The vane pump also has a rotor, which lies eccentrically in the housing body and which is rotatably mounted in the floor and the cover, and one or more vanes which are movably mounted in the rotor in an axial direction. Each vane has bearing journals on the axial end faces thereof, said bearing journals engaging into the floor and the cover.

Description

Wing pump

The present invention relates to a kind of wing pump, this wing pump has: pump case body, pump case have cannula-like housing, bottom and lid, wherein bottom and the axial enclosing housing of lid; Rotor, its be arranged in the housing prejudicially and be rotatably supported in the bottom with the lid in; And one or more blades, it is bearing in the rotor on axial direction movably.

Known numerous configurations of wing pump.They are used to seal gaseous medium, so that produce negative pressure or carry gaseous state or liquid medium.In this wing pump; A plurality of blades are bearing in the rotor that is arranged in prejudicially in the pump case movably; Make that between the blade with at rotor and form between the inner peripheral surface of pump case of stator and form working space, the volume of working space constantly changes, promptly enlarge and dwindle.Blade when rotor rotation because centrifugal force and the inner peripheral surface of the outside centrifugal rotation and the pump case of nuzzling up.Make the relevant work space with respect to adjacent working space sealing thus.Sealing is supported through following mode: with the surface of lubricant oil wetted part.Yet lubricant oil also is used to the power of reducing friction, and has reduced the power loss of pump thus.But being regarded as disadvantageous is that with lubricator wetting by the strong hand fluid of carrying and fluid are continuing use or are being discharged into outside possibility before and must be cleaned.In addition, consume lubricant oil.

Task of the present invention is, a kind of wing pump is provided, and it has lower oiling agent consumption, and the fluid of wherein being carried does not contain oiling agent.

This task is solving through following mode according to the present invention aspect the wing pump of the said type of beginning: each blade has the bearing pin in being coupled to the bottom and covering on it is axially distolateral.

In wing pump according to the present invention; Blade not only is being bearing in the rotor in the radial direction movably; Make blade according to rotor in pump case arranged off-centre and can about rotor in the radial direction the vibration; And blade also has the bearing pin that is coupled in bottom and the lid, makes and can encourage blade targetedly through bearing pin.This is possible, because the bottom all fixes with lid, and therefore bearing pin rotation in bottom and lid.

The bottom has the guide rail that is used for bearing pin respectively with lid for this reason, wherein bearing pin seamlessly or with little Spielpassung in guide rail.Guide rail preferably is configured to groove, and its middle guide especially has round-shaped and coaxial with the inner peripheral surface of housing.By this way, blade has the position of the inner peripheral surface qualification of relative housing all the time, and this has following advantage: when rotor does not rotate, just be in this position.Under the situation of the same low slow speed of centrifugal force, guaranteed that thus blade still is in the position of qualification, make and under the situation of slow speed, realized best conveying effect.This is favourable at wing pump during for example when engine starting under as the situation of lubricating pump work.In this case, oiling agent has been transferred when engine start, rather than when higher revolutions, just is transferred.

In a preferred embodiment, bearing pin is formed by the bolt that is bearing in the blade.Can as commonly used, make blade by this way,, and need only be provided with bearing pin for example as injection molded or as die castings.This for example can directly inject injection molded.

What in an improvement project, be provided with is the free end block bearing, the especially deep groove ball bearing that axially protrude in blade of bolt.Deep groove ball bearing is coupled in the guide rail, and rotation in bottom and lid.Preferably selflubricating of deep groove ball bearing, make can omit additional lubricated.

A major character of the present invention is, has the gap between the inner peripheral surface of and housing most advanced and sophisticated at outer foil radially.The gap has guaranteed between blade and housing, not produce frictional force, and blade is not frayed on the one hand thus, and the power loss of the opposing party's face-pumping is low.In the scope of gap between 5 μ m to 100 μ m, and especially between 10 μ m and 50 μ m.

If expectation or sealing are fully then arranged Stamping Steel Ribbon on vane tip radially.In one embodiment, in outer foil tip radially, extend, in groove, arrange the Stamping Steel Ribbon that protrudes in vane tip at the groove that moves towards on the longitudinal direction of blade.The Stamping Steel Ribbon floating ground is bearing in the groove, makes it to carry out relative movement with respect to blade.When rotor rotation, Stamping Steel Ribbon is pressed onto on the inner peripheral surface of housing or centrifugal rotation, and seal operation space fully thus.Have almost insignificant weight because Stamping Steel Ribbon is compared with blade, so frictional force is minimum.

Stamping Steel Ribbon preferably perhaps is made up of plastics metal, especially light-weight metal, and plastics are for example by fiber reinforcement.This Stamping Steel Ribbon has little weight on the one hand, and enough wear-resistant on the other hand.

Preferably move under the situation of oiling agent not having according to wing pump of the present invention, i.e. dry-running.Realized following advantage thus, the medium of promptly being carried is not contaminated, and does not need oil separator etc. in the outlet port of wing pump thus.

Other advantages of the present invention, characteristic and details from dependent claims and below description obtain, wherein be described in detail with reference to the attached drawings special preferred embodiment.At this, shown in the accompanying drawing and in specification and the characteristic of in claim, mentioning respectively separately or combination in any ground reflection essence of the present invention.

In the accompanying drawings:

Fig. 1 shows the perspective view according to wing pump of the present invention;

Fig. 2 shows the side view of seeing along arrow II direction according to Fig. 1;

Fig. 3 show according to Fig. 1 at the perspective view that takes off under the situation of housing lid;

Fig. 4 shows the section IV-IV according to Fig. 2;

Fig. 5 shows the section V-V according to Fig. 4;

Fig. 6 shows the section VI-VI according to Fig. 4; And

Fig. 7 shows the perspective view of the blade of part incision.

Wing pump 10 has been shown in Fig. 1, and it mainly has: housing 12, housing 12 have cooling ribs 14, have the bottom 16 of fixed connecting plate 18 and have the lid 20 of fixed connecting plate 22.In addition, can see exhaust port 24 and entry port 26 and flange 28 in lid 20, on flange 28, can fix (unshowned) transmission device, it is bonded on the transmission shaft 30.

What in Fig. 3, can see is, housing 12 makes up and surrounding rotor 32 on sleeve shape ground basically, and it is bearing in the housing 12 prejudicially, and transmission shaft 30 stretches out from rotor 32.Rotor 32 has cylindrical basically shape and is provided with and holds seam (Aufnahmeschlitze) 34, and it extends on axial direction and at the circumference and its distolateral top edge open (randoffen) of rotor 32.In addition, rotor 32 is provided with a plurality of axial bores 36 and 38, and hole 36 is holding between the seam 34 its mesopore 38 holding on seam 34 the bottom.The weight of rotor 32 has been reduced in these holes 36 and 38, has therefore reduced its moment of inertia.In holding seam 34, blade 40 is arranged, its supporting is for making that it can be in motion in the radial direction.Two adjacent vanes 40, the side face 42 of rotor 32 and the inner peripheral surfaces 44 of housing 12 form working space 46 respectively, and the fluid that in working space, is comprised is transported to exhaust port 24 from entry port 26.

Be that entry port 26 is connected with 52 with the falculate entrance and exit 50 that feeds working space 46 through the overflow ducts in the housing 12 48 with exhaust port 24 from what Fig. 4 can see.

Fig. 5 is clearly shown that working space 46 is increased constantly and dwindles, and blade 40 to be deep into holding in the seam of rotor 32 near or far away.

Fig. 7 shows this blade 40, and its two distolateral 54 in blade is provided with bearing pin 56, and bearing pin 56 is formed by bolt 58, bolt 58 be coupled to blade 40 neutralization protrude in distolateral 54, and block bearing 60, for example deep groove ball bearing 62.

Like what can see from Fig. 6 be, lid 20 has the guide rail 66 of structure grooving 64, guiding deep groove ball bearing 62 in guide rail 66.Groove 64 correspondingly forms the pressure control to blade 40, because groove 64 is coaxial with the inner peripheral surface of housing 12, and therefore with respect to rotor 32 and transmission shaft 30 off-centre thereof.The radial dimension of the position of guide rail 66 and blade 40 with and Position Design in rotor 32 for to make vane tip 68 (Fig. 7) continue to have distance apart from the inner peripheral surface 44 of housing 12, this distance is in the scope of 5 μ m to 100 μ m.Guide rail 66 correspondingly has and guarantees the gap or apart from the position of the distance of inner peripheral surface 44, and what wherein consider is, though blade 40 radial arrangement in rotor 32, trend towards quadrature with respect to housing 12, particularly inner circumferential surface 44.This means that under the situation in the big gap that remains unchanged, inner peripheral surface 44 and/or guide rail 66 have the shape that departs from circle.Can also fluctuate in certain limit in the gap.

From what Fig. 7 can also see be, vane tip 68 is included in the groove 70 that moves towards on the longitudinal direction of blade 40, and in Stamping Steel Ribbon 72 insertion grooves 70, Stamping Steel Ribbon stretches out vane tip 68 slightly in its side.Stamping Steel Ribbon 72 floating grounds and especially can be towards 44 motions of the inner peripheral surface of housing 12 in groove 70.The task of Stamping Steel Ribbon 72 is, its elimination and sealing are present in the gap between the inner peripheral surface 44 of blade 40 and housing 12.Especially continue under the situation of change in the gap, the gap is closed by effectively, has guaranteed that wherein vane tip 68 is not touched the inner peripheral surface 44 of housing 12.Because Stamping Steel Ribbon especially is made up of plastics,, make frictional force little as can to ignore so it has little weight.In addition, Stamping Steel Ribbon 72 can no problem ground and replacing simply.

Claims

1. a wing pump (10) has: pump case, pump case have cannula-like housing (12), bottom (16) and lid (20), wherein bottom (16) and the axial enclosing housing (12) of lid (20); Rotor (32) is arranged in the housing (12) rotor eccentricity and is rotatably supported in bottom (16) and covers in (20); And one or more blades (40), said blade is bearing on axial direction in the rotor (32) movably, it is characterized in that, and each blade (40) has the bearing pin (56) that is coupled in bottom (16) and the lid (20) on it is axially distolateral.

2. wing pump as claimed in claim 1 is characterized in that, bearing pin (56) is formed by the bolt (58) that in blade (40), forms.

3. wing pump as claimed in claim 2 is characterized in that, free end block bearing (60), the especially deep groove ball bearing (62) that axially protrude in blade (40) of bolt (58).

4. like one of above-mentioned claim described wing pump, it is characterized in that bottom (16) and lid (20) have the guide rail (66) that is used for bearing pin (56).

5. wing pump as claimed in claim 4 is characterized in that, guide rail (66) is groove (64).

6. like claim 4 or 5 described wing pumps, it is characterized in that guide rail (66) is a ring track.

7. like the described wing pump of one of claim 4 to 6, it is characterized in that guide rail (66) is coaxial with the inner peripheral surface (44) of housing (12).

8. as the described wing pump of one of above-mentioned claim, it is characterized in that, between the inner peripheral surface (44) of radially outer foil most advanced and sophisticated (68) and housing (12), have the gap.

9. wing pump as claimed in claim 8 is characterized in that, the size in gap is 5 μ m to 100 μ m, especially 10 μ m to 50 μ m.

10. like one of above-mentioned claim described wing pump, it is characterized in that, in outer foil most advanced and sophisticated (68) radially, extend at the groove that moves towards on the longitudinal direction of blade (40) (70).

11. wing pump as claimed in claim 10 is characterized in that, in groove (70), arranges the Stamping Steel Ribbon (72) that protrudes in vane tip (68).

12. wing pump as claimed in claim 11 is characterized in that, Stamping Steel Ribbon (72) floating ground is bearing in the groove (70).

13., it is characterized in that Stamping Steel Ribbon (72) is made up of metal like claim 11 or 12 described wing pumps, especially constitute or constitute by plastics by light-weight metal.

14., it is characterized in that wing pump is the pump (10) of dry-running like one of above-mentioned claim described wing pump.