CN203215234U - Tri-rotor engine oil pump - Google Patents
Tri-rotor engine oil pump Download PDFInfo
- Publication number
- CN203215234U CN203215234U CN 201320083874 CN201320083874U CN203215234U CN 203215234 U CN203215234 U CN 203215234U CN 201320083874 CN201320083874 CN 201320083874 CN 201320083874 U CN201320083874 U CN 201320083874U CN 203215234 U CN203215234 U CN 203215234U
- Authority
- CN
- China
- Prior art keywords
- rotor
- transition
- oil
- booster cavity
- oil pump
- 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
Images
Abstract
The utility model provides a tri-rotor engine oil pump, which comprises a shell which is provided with an oil absorption groove and an oil discharge groove, and further comprises an inner rotor, a transition rotor and an outer rotor, wherein the outer rotor is arranged in a closed space which consists of the shell and an end cover, the outer rotor and the transition rotor are hollow structures, the transition rotor is eccentrically arranged in the outer rotor and is engaged with the outer rotor, an outer decompression chamber and an outer booster cavity are arranged between the transition rotor and the outer rotor, the inner rotor is eccentrically arranged in the transition rotor and is engaged with the transition rotor, and an inner decompression chamber and an inner booster cavity are arranged between the inner rotor and the transition rotor, the outer decompression chamber and the inner decompression chamber are communicated with the oil discharge groove, and the outer booster cavity and the inner booster cavity are communicated with the oil absorption groove. The tri-rotor engine oil pump can effectively improve oil transportation efficiency, and is beneficial to achieve miniaturization of engine oil pumps.
Description
Technical field
The utility model relates to a kind of automobile engine oil recycle unit, and more particularly, it relates to a kind of triple-spool oil pump.
Background technique
Motor needs to supply machine oil continuously by lubrication system in the running, plays effects such as lubricated, cooling and sealing, guarantees the motor proper functioning.Lubrication system generally is core apparatus with the rotor-type oil pump, traditional rotor-type oil pump generally includes internal rotor and two rotors of external rotor, be eccentric structure during the assembling of two rotors, driving internal rotor by bent axle rotates, and then the drive external rotor, between internal rotor and external rotor, form the supercharging oil pocket, at oil sump lubricant oil is discharged, and by the pressure effect oil delivery is supplied everywhere to lubrication system and to need lubricated component, reach lubricated effect.Two traditional rotor engine oil pumps have only a supercharging oil pocket, in certain space, the efficient of machine oil output is relatively low, and the oil mass of supply is relatively limited, sometimes in order to satisfy the needs of circulation oil mass, can only increase the axial dimension of each rotor to strengthen the volume of supercharging oil pocket, the axial dimension of oil pump is also wanted corresponding increase like this, therefore just needs bigger installing space, like this, the limited occasion in the space on automobile, very is unfavorable for arranging and lays.Notification number is that the model utility of CN201496262U discloses a kind of oil pump on June 2nd, 2010, comprises the pump housing, pump cover, rotor shaft, internal rotor, external rotor; Pump cover covers on the pump housing; Have the rotor chamber that internal rotor and external rotor are set at the pump housing, rotor and external rotor are located in the rotor chamber; Internal rotor is connected on the rotor shaft; The pump cover surface is provided with oil suction chamber and goes out oil pocket, is provided with oil inlet hole and oil outlet in the pump housing, and oil suction chamber is communicated with oil inlet hole, goes out oil pocket and is communicated with oil outlet; All be provided with in pump cover and the pump housing and help the formula oil circuit secretly, described oil suction chamber with go out oil pocket and be communicated with by oil inlet hole and the oil outlet of helping the formula oil circuit in the formula of helping secretly the oil circuit in the pump cover and the pump housing secretly and being connected.The utility model oil pump ne-leakage, working pressure is stable, long service life, noise is low, and oil absorbency is good, and it is short to start the fuel-displaced time, in light weight, energy-conserving and environment-protective, beautiful shape.But as previously mentioned, this oil pump still belongs to two traditional rotor engine oil pumps, and the efficient of machine oil output is relatively low.
The model utility content
In order to overcome the relatively low deficiency of efficient of existing oil pump machine oil output, the utility model provides a kind of same axial dimension exportable bigger oil level, the higher relatively triple-spool oil pump of efficient of machine oil output.
The technical solution of the utility model is: a kind of triple-spool oil pump, comprise the housing that has oil suction groove and oil-discharge trough, also comprise internal rotor, transition rotor and external rotor, external rotor is located in the closed space that is made of housing and end cap, external rotor, the transition rotor is hollow structure, to be located at external rotor inner and mesh with outer rotor teeth the transition rotor eccentricity, be provided with outer relief chamber and outer booster cavity between transition rotor and external rotor, internal rotor is located at the transition internal rotor prejudicially and is meshed with the transition rotor tooth, relief chamber and interior booster cavity in being provided with between internal rotor and transition rotor, outer booster cavity and interior booster cavity all are communicated with oil-discharge trough, and outer relief chamber is communicated with the oil suction groove with interior relief chamber.The outer surface of internal rotor, external rotor inwall are respectively equipped with tooth, and transition rotor then outer surface and inwall all has tooth, can keep stable synchronous rotation by a tooth engagement rotor.This triple-spool oil pump in the running, internal rotor and transition rotor, have two supercharging oil pockets between transition rotor and external rotor, booster cavity and outer booster cavity namely, in each work cycle, two supercharging oil pockets are exported high-pressure oil in oil-discharge trough, in the same time period, two rotor engine oil pumps that a supercharging oil pocket is only arranged traditional under the obvious situation than axially equal and radial dimension of engine oil output are bigger, so this triple-spool oil pump just can obtain higher machine oil delivery efficiency with littler size.
As preferably, be installed with the annulus circle of projection on the end face of transition rotor, corresponding transition rotor end-face place is provided with the curve bath adaptive with the annulus circle on the housing, and the annulus circle is embedded in the curve bath.Though can guarantee to keep between transition rotor and external rotor fixing relative position by the size of parietal tooth in precision machining transition rotor outer surface tooth and the external rotor or by the meniscus obstruct mode, but it is very high to processing and matching requirements, cooperating structure by annulus circle and curve bath then can provide a fixing center of rotation for the transition rotor, thereby the transition rotor is remained on the stable position, avoid taking place the radially changing of the relative positions, can guarantee the engagement rotation of transition rotor and inside and outside rotor stability ground like this.
As preferably, the transverse section of described annulus circle and curve bath is half elliptic.The big end of half elliptic arc-shaped slot, is little, and is comparatively slick and sly, and has the bigger degree of depth, and the energy automatic guide reduces jam, smooth and easy cooperation when the annulus circle embeds.
As preferably, annulus circle and the transition rotor structure that is formed in one.Annulus circle and transition rotor are formed in one, and can guarantee the annulus circle in the epitrochanterian bond strength of transition, thereby guarantee transition rotor and precision.
The beneficial effects of the utility model are:
Effectively improve oil transportation efficient.The utility model has increased a transition rotor on the basis of inside and outside two rotor structures of routine, forms two supercharging oil pockets, and external rotor is every through a rotation period, and more high-pressure oil output can be arranged, thereby improves the oil transportation efficient of oil pump.
Be beneficial to the miniaturization that realizes oil pump.The utility model takes full advantage of radial space, more supercharging oil pocket is set in same radial distance, need not the oil transportation amount needs that too big axial dimension just can reach machine oil, therefore can reduce the axial dimension of oil pump to a certain extent, make oil pump smaller and more exquisite, be beneficial in the confined space and arrange freely and lay.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is a kind of structural representation of the utility model enclosure interior.
Among the figure, 1-internal rotor, 2-transition rotor, 3-external rotor, 4-housing, the outer relief chamber of 5-, the outer booster cavity of 6-, booster cavity in the relief chamber in the 7-, 8-, 9-oil suction groove, 10-oil-discharge trough, 11-vestibule, 12-curve bath, 13-annulus circle.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawing specific embodiment.
Embodiment:
As depicted in figs. 1 and 2, a kind of triple-spool oil pump, comprise end cap and have oil suction groove 9 and the housing 4 of oil-discharge trough 10, housing 4 is a cylinder, housing 4 is provided with the open columniform vestibule 11 in a top, oil suction groove 9 and oil-discharge trough 10 are positioned at vestibule 11 bottoms, and oil-discharge trough 10 communicates with oily parts by the oil transport pipeline of outwards drawing again with each.End cap is by being bolted to outside vestibule 11 open-toppeds, this triple-spool oil pump also comprises internal rotor 1, transition rotor 2 and external rotor 3, external rotor 3 is located in the closed space that is made of housing and end cap, rotate adaptedly and be installed in the vestibule 11, external rotor 3, transition rotor 2 is hollow structure, the outer surface of internal rotor 1 is provided with tooth, external rotor 3 inwalls are provided with tooth, 2 outer surfaces of transition rotor and inwall are equipped with tooth, transition rotor 2 is located at external rotor 3 inside prejudicially and is meshed with external rotor 3 teeth, the root circle radial distance biggest place of parietal tooth in the top circle of transition rotor 2 outer surface teeth and external rotor 3, an outer surface tooth of transition rotor 2 and external rotor 3 one in the lucky tooth top of parietal tooth tooth top is offseted.3 of transition rotor 2 and external rotors are provided with outer relief chamber 5 and outer booster cavity 6, outer relief chamber 5 is to be minimal in this segment limit of gap maximum point by transition rotor 2 and external rotor 3 gaps, the a series of capacitors that are divided into by parietal tooths in transition rotor 2 outer surface teeth and the external rotor 3 constitute, and these capacitors increase gradually along the sense of rotation of rotor.Otherwise, 6 of outer booster cavities be by transition rotor 2 and external rotor 3 gap maximums to this segment limit of gap smallest point, be split to form by parietal tooths in transition rotor 2 outer surface teeth and the external rotor 3, and along the diminishing a series of capacitors formations of rotor sense of rotation.Internal rotor 1 is located at transition rotor 2 inside prejudicially and is meshed with transition rotor 2 teeth, the top circle radial distance biggest place of the root circle of parietal tooth and internal rotor 1 in transition rotor 2, an interior parietal tooth of transition rotor 2 and a lucky tooth top of tooth of internal rotor 1 offset to tooth top.Relief chamber 7 and interior booster cavity 8 in 2 of internal rotor 1 and transition rotors are provided with, the constituted mode of interior relief chamber 7 and interior booster cavity 8 are similar with outer relief chamber 5 and outer booster cavity 6 respectively.Outer booster cavity 6 and interior booster cavity 8 all are communicated with oil-discharge trough 10, and outer relief chamber 5 is communicated with oil suction groove 9 with interior relief chamber 7.The end face of transition rotor 2 is provided with the annulus circle 13 of projection, the outer surface tooth of annulus circle 13 and transition rotor 2 and in the top circle of parietal tooth all concentric, annulus circle 13 and transition rotor 2 structure that is formed in one, in vestibule 11 bottoms, corresponding transition rotor 2 ends on the housing 4 between oil suction groove 9 and the oil-discharge trough 10, and described end cap inboard is respectively equipped with the curve bath 12 adaptive with the annulus circle, when this triple-spool oil pump is finished assembling, the annulus circle is embedded in the curve bath 12, and the transverse section of annulus circle and curve bath 12 is half elliptic.
When internal rotor 1 rotates under the drive of axle, also driven with the transition rotor 2 of internal rotor 1 engagement, and then drive external rotor 3, owing to keep stable relative position between each rotor, form stable outer relief chamber 5 during running, interior relief chamber 7, outer booster cavity 6 and interior booster cavity 8, machine oil in the oil suction groove 9 is inhaled in outer relief chamber 5 and the interior relief chamber 7, along with rotor motion is delivered to outer booster cavity 6 and interior booster cavity 8 respectively, compressed with rotor motion again, the final high-pressure oil that forms is pooled in the oil-discharge trough 10, and continues to be delivered to respectively with oily parts place along the oil transport pipeline that draws outward under pressure.
Claims (4)
1. triple-spool oil pump, comprise end cap and have oil suction groove (9) and the housing (4) of oil-discharge trough (10), it is characterized in that also comprising internal rotor (1), transition rotor (2) and external rotor (3), external rotor (3) is located in the closed space that is made of housing (4) and end cap, external rotor (3), transition rotor (2) is hollow structure, transition rotor (2) is located at external rotor (3) inside prejudicially and is meshed with external rotor (3) tooth, be provided with outer relief chamber (5) and outer booster cavity (6) between transition rotor (2) and external rotor (3), internal rotor (1) is located at transition rotor (2) inside prejudicially and is meshed with transition rotor (2) tooth, be provided with interior relief chamber (7) and interior booster cavity (8) between internal rotor (1) and transition rotor (2), outer booster cavity (6) and interior booster cavity (8) all are communicated with oil-discharge trough (10), and outer relief chamber (5) is communicated with oil suction groove (9) with interior relief chamber (7).
2. triple-spool oil pump according to claim 1, it is characterized in that being installed with on the end face of transition rotor (2) the annulus circle of projection, housing (4) is gone up corresponding transition rotor (2) end and is provided with the curve bath adaptive with the annulus circle, and the annulus circle is embedded in the curve bath.
3. triple-spool oil pump according to claim 2 is characterized in that the transverse section of described annulus circle and curve bath is half elliptic.
4. according to claim 2 or 3 described triple-spool oil pump, it is characterized in that annulus circle and transition rotor (2) structure that is formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083874 CN203215234U (en) | 2013-02-22 | 2013-02-22 | Tri-rotor engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083874 CN203215234U (en) | 2013-02-22 | 2013-02-22 | Tri-rotor engine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203215234U true CN203215234U (en) | 2013-09-25 |
Family
ID=49204772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320083874 Expired - Lifetime CN203215234U (en) | 2013-02-22 | 2013-02-22 | Tri-rotor engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203215234U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827059A (en) * | 2019-01-23 | 2019-05-31 | 浙江零跑科技有限公司 | A kind of cycloid gear pump of two-way fuel feeding |
| CN111734623A (en) * | 2020-06-29 | 2020-10-02 | 潍柴动力股份有限公司 | Cycloid pump and closed hydraulic system |
-
2013
- 2013-02-22 CN CN 201320083874 patent/CN203215234U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827059A (en) * | 2019-01-23 | 2019-05-31 | 浙江零跑科技有限公司 | A kind of cycloid gear pump of two-way fuel feeding |
| CN111734623A (en) * | 2020-06-29 | 2020-10-02 | 潍柴动力股份有限公司 | Cycloid pump and closed hydraulic system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201087731Y (en) | Roter type engine oil pump of car engine | |
| CN201723266U (en) | Oil pump for automobile engine | |
| CN102678541B (en) | Fuel delivery pump with floated cycloid rotor | |
| CN203215234U (en) | Tri-rotor engine oil pump | |
| CN203907191U (en) | Rotor type oil pump of 1.5 T turbocharged engine | |
| CN101634240A (en) | Engine oil pump structure | |
| CN201496117U (en) | Assembling structure of engine oil pump on engine | |
| CN202065029U (en) | Oil pump with three helical gears | |
| CN208901053U (en) | A kind of rotor-type oil pump can be reduced abrasion | |
| CN202074216U (en) | Outer rotor gear driving motor oil pump | |
| CN100357605C (en) | Cycloidal pin gear hydraulic pump | |
| CN208719807U (en) | A kind of rotor-type oil pump that can balance end face oil pressure | |
| CN208719808U (en) | A kind of rotor-type oil pump that can improve cavitation erosion | |
| CN112879283A (en) | Triangular rotor pump | |
| CN208718912U (en) | A kind of outer rotor can be reduced abrasion | |
| CN202118481U (en) | Shell structure of rotor type oil pump | |
| CN113323862A (en) | 2D hydraulic pump | |
| CN203114626U (en) | Rotary compressor with balance hole on sliding piece groove | |
| CN205155525U (en) | Light -duty large -traffic oil pump | |
| CN207333191U (en) | Slide plate lubrication system and the rotary compressor with the slide plate lubrication system | |
| CN201228632Y (en) | Inside engaged cycloidal rotor pump | |
| CN202370828U (en) | Rotor type oil pump | |
| CN214424691U (en) | Triangular rotor pump | |
| CN210919430U (en) | Fluid pump | |
| CN220539854U (en) | Parallel light-weight gearbox oil pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |