CN117948273A - High-flow electronic oil pump - Google Patents

High-flow electronic oil pump Download PDF

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Publication number
CN117948273A
CN117948273A CN202410126880.0A CN202410126880A CN117948273A CN 117948273 A CN117948273 A CN 117948273A CN 202410126880 A CN202410126880 A CN 202410126880A CN 117948273 A CN117948273 A CN 117948273A
Authority
CN
China
Prior art keywords
oil
outer rotor
pump
rotor
cavity
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.)
Pending
Application number
CN202410126880.0A
Other languages
Chinese (zh)
Inventor
高殿朋
袁利娜
李仕伟
马敏幸
郝旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Daxi Technology Co ltd
Original Assignee
Wuxi Daxi Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Daxi Technology Co ltd filed Critical Wuxi Daxi Technology Co ltd
Priority to CN202410126880.0A priority Critical patent/CN117948273A/en
Publication of CN117948273A publication Critical patent/CN117948273A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—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
    • F04C2/102—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 the two members rotating simultaneously around their respective axes
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • 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
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • F04C2240/10—Stators
    • 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
    • F04C2240/20—Rotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The application discloses a high-flow electronic oil pump which comprises a transmission shaft, an inner rotor and at least one outer rotor, wherein the transmission shaft is driven by a motor to drive the inner rotor to rotate so as to drive the outer rotor to rotate, and the motor is arranged above a pump body; a plurality of convex teeth are arranged on the inner rotor; the outer rotor is internally provided with a plurality of openings for containing and transmitting oil, the openings are communicated with the inner ring and the outer ring of the outer rotor, the inner ring of the outer rotor is provided with a plurality of concave teeth matched with the convex teeth, and the openings are arranged at the joint of any two adjacent concave teeth; the pump body is internally provided with a first cavity for containing oil. The opening arranged on the outer rotor greatly increases the flow section of the cavity formed by the cooperation of the inner rotor and the outer rotor when oil flows in and out; each opening can realize the effect of containing and transmitting oil, and then increase the oil carrying and conveying capacity of the outer rotor when rotating along with the inner rotor, namely, the displacement of the electronic oil pump assembly is increased.

Description

High-flow electronic oil pump
Technical Field
The application relates to the technical field of automobile accessories, in particular to a high-flow electronic oil pump.
Background
Currently, the engine of a vehicle is usually continuously supplied with fuel through an electronic oil pump to ensure normal operation; the electronic oil pump is characterized in that an inner rotor is driven by a motor to rotate, the inner rotor performs planetary cycloid motion along the inner surface of the outer rotor, teeth on meshing lines of the main rotor and the outer rotor sequentially enter a meshing state and a disengaging state, so that the volume of the pump is changed, and oil suction and oil discharge processes are realized.
In the prior art, an oil cavity of an electronic oil pump consists of an outer circumferential surface of an inner rotor, an inner circumferential surface of an outer rotor and a pump shell, and the oil discharge amount of the oil pump is determined by the volume of the oil pump. Under the condition that the discharge capacity needs to be improved, the whole size of the oil pump is usually increased, and as the outer rotor is driven by the inner rotor to rotate, the larger the size of the outer rotor is, the larger the rotational inertia of the inner rotor is, so that the power consumption of the motor is correspondingly increased, and the working efficiency is lower.
Disclosure of Invention
In view of the above, the application provides a high-flow electronic oil pump, which increases the oil flow while increasing the liquid storage capacity of an outer rotor by arranging a notch in the outer rotor, and specifically adopts the following technical scheme:
The high-flow electronic oil pump comprises a transmission shaft, an inner rotor and at least one outer rotor, wherein the transmission shaft is driven by a motor to drive the inner rotor to rotate so as to drive the outer rotor to rotate, the motor is arranged above a pump body, one end of the transmission shaft is rotationally connected with the pump body through a supporting piece, and the other end of the transmission shaft is arranged in a shaft hole of a pump head; a plurality of convex teeth are arranged on the inner rotor; the outer rotor is internally provided with a plurality of openings for containing and transmitting oil, the openings are communicated with the inner ring and the outer ring of the outer rotor, the inner ring of the outer rotor is provided with a plurality of concave teeth matched with the convex teeth, and the openings are arranged at the joint of any two adjacent concave teeth; the opening is used as an additional oil inlet and outlet in the oil pump, so that the flow rate of the oil is improved and part of the oil is contained.
Preferably, the notch may be provided at least one of a top end, a middle end and a bottom end of the outer rotor.
Further preferably, the top end and the bottom end of the outer rotor are both provided with the notch.
Preferably, a first containing cavity communicated with an oil inlet and an oil outlet of the oil pump is arranged in the pump body and used for containing oil; the first containing cavity at the oil inlet and outlet is higher than the outer rotor, and the first containing cavity in the pump body can contain more oil, so that the supply of oil needed by the meshing area of the outer rotor and the inner rotor is ensured to be abundant.
Further preferably, the cavity has an arc-shaped contour.
Further preferably, a second cavity corresponding to the first cavity is also provided in the pump head, so as to increase the oil storage capacity in the oil cavity.
Preferably, the number of the concave teeth is at least one more than the number of the convex teeth.
Preferably, when the outer rotor is provided with two or more, the outer rotors are sequentially provided along the inner rotor axis direction.
The application has the beneficial effects that:
(1) Compared with the prior art, the top end and the bottom end of the outer rotor are provided with the openings, so that oil can flow in or out from the openings, and the size of an oil inlet and an oil outlet in the oil pump is increased; meanwhile, through the matching of the first containing cavity and the second containing cavity, oil can flow into the working area of the oil pump from the bottom end, the top end and the outer circumferential surface of the outer rotor at the same time, the oil inlet is increased, and meanwhile, the oil can flow into or out of the working area more smoothly, so that the working efficiency is improved;
(2) The gap is sealed by a cavity formed among the inner surface of the pump body, the end face of the pump head, the outer circumferential surface of the inner rotor and the inner circumferential surface of the outer rotor in the compression process, so that the liquid storage capacity of the oil outer rotor is increased, and the power flow of the oil pump is improved;
(3) The first cavity and the second cavity are respectively arranged in the pump body and the pump head, so that oil can be taken away in the process of throwing out the oil while the oil storage capacity in the oil cavity is improved, namely, the working efficiency of the oil pump is improved under the condition of the same power consumption.
In summary, through the cooperation of the opening with the first accommodating cavity and the second accommodating cavity, when the volume of the sequentially-changed accommodating cavity formed by the cooperation of the inner rotor and the outer rotor is increased, oil can more smoothly flow into the accommodating cavity formed by the cooperation of the inner rotor and the outer rotor from the bottom end, the top end and the outer circumferential surface of the outer rotor in multiple directions at the same time; when the volume of the sequentially-changed containing cavity formed by the inner rotor and the outer rotor is reduced, oil can flow out of the containing cavity formed by the inner rotor and the outer rotor in a multi-azimuth mode from the bottom end, the top end and the outer circumferential surface of the outer rotor more smoothly.
Drawings
FIG. 1 is a schematic diagram of a prior art electronic oil pump;
FIG. 2 is a schematic diagram of a prior art outer rotor;
FIG. 3 is a schematic diagram of a prior art pump body;
FIG. 4 is a schematic view of an electronic oil pump according to the present application;
FIG. 5 is a schematic view of an electronic oil pump according to the present application in semi-section;
FIG. 6 is a schematic view of a pump body according to the present application;
FIG. 7 is a schematic view of a first outer rotor according to the present application;
fig. 8 is a schematic view of a second outer rotor according to the present application.
In the figure: 1. the motor comprises a transmission shaft, 2, an inner rotor, 21, convex teeth, 3, an outer rotor, 3a, an existing outer rotor, 31, concave teeth, 32, a notch, 4, a motor, 5, a pump body, 5a, an existing pump body, 51, a first cavity, 6, a pump head, 61, a second cavity, 62, a shaft hole, 7 and a supporting piece.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments of the present application are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 4 to 8, a high-flow electronic oil pump according to the present application further includes a transmission shaft 1, an inner rotor 2 and at least one outer rotor 3, where the transmission shaft 1 is driven by a motor 4 to drive the inner rotor 2 to rotate so as to drive the outer rotor 3 to rotate, the motor 4 is disposed above a pump body 5, one end of the transmission shaft 1 is rotationally connected to the pump body 5 through a supporting member 7, and the other end of the transmission shaft 1 is disposed in a shaft hole 62 of a pump head 6 and supported by the supporting member 7; a plurality of convex teeth 21 are arranged on the inner rotor 2; a plurality of notches 32 for containing and transmitting oil are formed in the outer rotor 3, the notches 32 are communicated with the inner ring and the outer ring of the outer rotor 3, a plurality of concave teeth 31 matched with the convex teeth 21 are formed in the inner ring of the outer rotor 3, and the notches 32 are formed at the joint of any two adjacent concave teeth 31; the opening 32 is used as an additional oil inlet and outlet in the oil pump, so that the flow rate of the oil is increased and part of the oil is contained; the convex teeth 21 are sequentially attached to and then separated from each concave tooth 31, so that the convex teeth enter an engaged state and are disengaged from the engaged state, and a variable volume cavity with variable volume is sequentially formed, so that oil suction and oil discharge processes are realized. Wherein the support 7 is a bearing or bushing.
When the oil pump works, one working cycle occurs when one convex tooth 21 of the inner rotor 2 rotates for one circle, namely oil is absorbed and discharged once each time. As shown in fig. 1 to 3, in the prior art, an oil cavity of an oil pump is formed by an outer circumferential surface of an inner rotor 2 and an inner circumferential surface of an outer rotor 3a and a pump shell, oil in the pump shell can only flow in or flow out from a communication position between the oil cavity and an oil inlet and outlet of the oil pump, and no other oil inlet and outlet provided for the oil cavity is arranged in the oil pump, so that the volume of the oil cavity of the structure is small, the oil storage amount is relatively small, and the oil amount which can be extracted and transmitted by the oil pump is limited in unit time, thereby influencing the overall efficiency of the pump. The pump housing includes a pump head 6 and a pump body 5a.
Compared with the prior art, as shown in fig. 4 and fig. 7 to fig. 8, the gap 32 provided in the outer rotor 3 can increase the liquid storage amount of the outer rotor 3 and improve the power flow. Specifically, at the input port, while the oil is flushed into the concave teeth 31, the gap 32 can also accommodate part of the oil, the oil rotates together with the outer rotor 3, the oil at the gap 32 is continuously compressed with the oil in the concave teeth 31 in the rotating process of the outer rotor 3 to form high-pressure oil, meanwhile, a trace amount of oil flows to the outer circumferential surface of the outer rotor 3 in the compressing process, and an oil film is formed between the oil and the side wall of the pump shell, so that the friction between the outer rotor 3 and the pump shell can be reduced while the gap 32 is sealed, and the service life of the oil pump is prolonged; at the output port, high-pressure oil flows to the low-pressure area, and the oil inside the outer rotor 3 and the oil at the opening 32 can flow to the oil outlet direction under the action of centrifugal force.
Wherein the notch 32 may be provided at least one of the top end, middle end and bottom end of the outer rotor 3; preferably, the top end and the bottom end of the outer rotor 3 are both provided with the notch 32.
Compared with the prior art, as shown in fig. 6, a first cavity 51 communicated with an oil inlet and outlet of the oil pump is arranged in the pump body 5 and is used for containing oil, the first cavity 51 at the oil inlet and outlet is higher than the outer rotor 3, and the first cavity 51 in the pump body 5 can contain more oil, so that the supply of oil needed by the meshing area of the outer rotor 3 and the inner rotor 2 is ensured to be abundant; wherein, the outline shape of the first cavity 51 is preferably arc-shaped to better adapt to space requirements, and particularly, the available space is effectively utilized in a limited space. Specifically, the oil is sucked into the oil pump along the axial direction, and the compressed oil is thrown towards the edge of the first cavity 51 under the action of centrifugal force, and a certain pressure is formed to throw the oil out of the oil outlet.
A second cavity 61 corresponding to the first cavity 51 is also arranged in the pump head 6 so as to improve the oil storage capacity in the oil cavity; the first cavity 51 and the second cavity 61 are respectively arranged in the pump body 5 and the pump head 6, so that the outer rotor 3 can be completely immersed in oil; after the oil liquid is compressed, more oil liquid can be taken away in the throwing process, namely, the working efficiency of the oil pump is improved under the condition of the same power consumption.
In the existing oil pump, oil can only flow into the working area of the oil pump from the bottom end, and the inlet of the existing oil pump is single, so that the working efficiency of the oil pump is low. In this embodiment, through the cooperation between the opening 32 and the first and second chambers 51 and 62, the oil can flow into the working area of the oil pump from the bottom end, the top end and the outer circumferential surface of the outer rotor 3 at the same time, so that the oil can flow into the working area more smoothly while the oil inlet is increased, and the working efficiency is improved. The operation area of the oil pump is an engagement area between the outer rotor 3 and the inner rotor 2.
The number of concave teeth 31 is at least one more than that of the convex teeth 21.
When the outer rotor 3 is provided with two or more, the outer rotor 3 is provided in the axial direction of the inner rotor 2 in sequence.
It should be noted that the medium that the electronic oil pump can deliver includes, but is not limited to, oil, gas or other liquid.

Claims (8)

1. The high-flow electronic oil pump comprises a pump body and a pump head, wherein a motor is arranged above the pump body, a transmission shaft in the pump body is driven by the motor to rotate so as to drive an inner rotor to rotate, the inner rotor is meshed with an outer rotor, a variable volume cavity with variable volume is formed in sequence, and then oil suction and oil discharge processes are realized, and a plurality of convex teeth are arranged on the inner rotor; the method is characterized in that: a first containing cavity communicated with an oil inlet and an oil outlet of the oil pump is arranged in the pump body and used for containing oil; the outer rotor is provided with at least one, a plurality of openings for containing and transmitting oil are formed in the outer rotor, the openings are communicated with the inner ring and the outer ring of the outer rotor, the inner ring of the outer rotor is provided with a plurality of concave teeth matched with the convex teeth, and the openings are formed at the joint of any two adjacent concave teeth.
2. The high flow electronic oil pump of claim 1, wherein: the notch is arranged at least one of the top end, the middle end and the bottom end of the outer rotor.
3. The high-flow electronic oil pump of claim 2, wherein: the top and the bottom of the outer rotor are provided with the openings.
4. The high flow electronic oil pump of claim 1, wherein: the first containing cavity at the oil inlet and outlet is higher than the outer rotor, and the first containing cavity in the pump body can contain more oil, so that the supply of oil needed by the meshing area of the outer rotor and the inner rotor is ensured to be abundant.
5. The high-flow electronic oil pump according to claim 1 or 4, characterized in that: the outline shape of the accommodating cavity is arc-shaped.
6. The high-flow electronic oil pump according to claim 1 or 4, characterized in that: and a second containing cavity corresponding to the first containing cavity is also arranged in the pump head so as to improve the oil storage capacity in the oil cavity.
7. The high flow electronic oil pump of claim 1, wherein: the number of concave teeth is at least one more than the number of convex teeth.
8. The high flow electronic oil pump of claim 1, wherein: when the outer rotor is provided with more than two, the outer rotor is sequentially provided along the axis direction of the inner rotor.
CN202410126880.0A 2024-01-30 2024-01-30 High-flow electronic oil pump Pending CN117948273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410126880.0A CN117948273A (en) 2024-01-30 2024-01-30 High-flow electronic oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410126880.0A CN117948273A (en) 2024-01-30 2024-01-30 High-flow electronic oil pump

Publications (1)

Publication Number Publication Date
CN117948273A true CN117948273A (en) 2024-04-30

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ID=90801070

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410126880.0A Pending CN117948273A (en) 2024-01-30 2024-01-30 High-flow electronic oil pump

Country Status (1)

Country Link
CN (1) CN117948273A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050152803A1 (en) * 2002-03-29 2005-07-14 Giorgio Manfredini Internal gear pump with recesses on the gear bearing surfaces
CN201902323U (en) * 2010-12-28 2011-07-20 杭州萧山东方液压件有限公司 Marine high-speed cycloid gear pump
JP2015063894A (en) * 2013-09-24 2015-04-09 アイシン精機株式会社 Oil pump
CN108662424A (en) * 2018-08-16 2018-10-16 湖南机油泵股份有限公司 A kind of rotor-type oil pump that can improve cavitation erosion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050152803A1 (en) * 2002-03-29 2005-07-14 Giorgio Manfredini Internal gear pump with recesses on the gear bearing surfaces
CN201902323U (en) * 2010-12-28 2011-07-20 杭州萧山东方液压件有限公司 Marine high-speed cycloid gear pump
JP2015063894A (en) * 2013-09-24 2015-04-09 アイシン精機株式会社 Oil pump
CN108662424A (en) * 2018-08-16 2018-10-16 湖南机油泵股份有限公司 A kind of rotor-type oil pump that can improve cavitation erosion

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