Energy-saving EOP electronic oil pump

Abstract

The invention relates to the technical field of energy-saving motors, in particular to an energy-saving EOP electronic oil pump which comprises a shell and a rear cover fixedly installed at the right end of the shell, a ventilation assembly is arranged on the rear cover and comprises a fixed cylinder fixedly installed on the right end face of the rear cover in a penetrating mode, and a ventilation cylinder is inserted into the right end of the fixed cylinder. A hollow cylinder located in the shell is fixedly installed at the left end of the fixed cylinder through an arranged supporting rod, and a drum membrane is fixedly installed at the left end of the hollow cylinder. Multiple optimization is achieved through intermittent pulse airflow, firstly, the airflow locks the ventilation valve, the sealing performance in the vibration environment is enhanced, the internal pressure stability is improved, secondly, when the arc-shaped blades rotate, oil mist on the inner wall of the ventilation valve is dynamically scraped, oil dirt deposition and blockage are prevented, meanwhile, the airflow is converted into spiral flow through the blades, the oil mist separation efficiency is improved, and the oil mist separation efficiency is improved. And therefore, the exhaust performance is optimized, the overall service life of the ventilation valve and the electronic oil pump is prolonged, and long-term stable operation of the energy-saving motor is ensured.

Description

Technical Field

[0001] This invention relates to the field of energy-saving electric motor technology, and in particular to an energy-saving EOP electronic oil pump. Background Technology

[0002] Energy-saving electric motors are those that significantly reduce energy loss through optimized electromagnetic design, the use of high-efficiency materials, improved cooling systems, and intelligent control technology. They are widely used in industrial drives, home appliances, and new energy vehicles. Energy-saving electric motors mainly consist of a high-efficiency stator, an optimized rotor, and an on-demand electronic oil pump. In energy-saving electric motors, the electronic oil pump intelligently controls the flow rate of lubricating oil or cooling oil and adjusts the oil supply pressure as needed, reducing the parasitic power loss of traditional mechanical oil pumps, thereby improving the overall energy efficiency of the energy-saving electric motor.

[0003] The electronic oil pumps in energy-saving electric motors still have the following problems during use: 1. During the use of the electronic oil pump, the periodic oil discharge of the electronic oil pump will continuously generate pulse airflow, which will cause the electronic oil pump to vibrate. Long-term vibration will accelerate the wear or aging of the vent valve seal, resulting in a decrease in sealing performance and causing oil leakage or air intake problems. At the same time, the impact of high-frequency airflow will loosen the vent valve body, affecting the pressure stability of the electronic oil pump and the overall energy efficiency of the energy-saving motor. 2. During the use of the electronic oil pump, the vent valve will be in contact with oil mist for a long time, which will cause the internal parts of the vent valve to age, deform or corrode due to oil penetration, reducing its sealing performance and operating sensitivity. At the same time, impurities in the oil mist may be deposited in the valve body channel, causing blockage or jamming, affecting the venting function, and ultimately leading to valve failure, oil leakage or pressure imbalance, further affecting the overall energy efficiency of the energy-saving motor. Summary of the Invention

[0004] In view of the problems in the above or existing technologies, such as the internal vibration of the electronic oil pump causing the vent valve body to loosen and the long-term contact with oil mist affecting the venting function, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides an energy-saving EOP electronic oil pump, which is achieved by the following specific technical means: An energy-saving EOP electronic oil pump includes a housing and a rear cover fixedly installed on its right end. The rear cover is provided with a venting component. The venting component includes a fixed cylinder fixedly installed through the right end face of the rear cover. A venting cylinder is inserted into the right end of the fixed cylinder. A hollow cylinder located inside the housing is fixedly installed on the left end of the fixed cylinder by a set support rod. A diaphragm is fixedly installed on the left end of the hollow cylinder. A central rod is slidably installed through the center of both the hollow cylinder and the ventilator. The central rod is hinged to the diaphragm. A locking part is provided on the ventilator. An arc-shaped blade and a mating part that cooperates with the central rod to rotate the arc-shaped blade are rotatably installed inside the ventilator. The pulsed airflow generated by the electronic oil pump impacts the diaphragm and pushes the center rod. The center rod moves and locks the vent cylinder through the locking part. At the same time, the rotating arc-shaped blades of the mating part scrape off the oil mist adhering to the inner wall of the vent cylinder, and the rotating arc-shaped blades discharge the pulsed airflow in a spiral manner.

[0006] Furthermore, a rotor assembly is rotatably mounted inside the housing, a magnetic sheet is fixedly mounted on the right end of the rotor assembly, a stator assembly is fixedly mounted on the right end inside the housing, a PCB board located inside the housing is fixedly mounted on the right side of the stator assembly, an outer rotor is rotatably mounted on the left end inside the housing via a set bearing, an inner rotor is set inside the outer rotor and is splined to cooperate with the left end of the rotor assembly, and a pump cover plate is fixedly mounted on the left end of the housing.

[0007] Furthermore, a No. 4 O-ring is fitted between the housing and the rear cover, a No. 3 O-ring is fitted between the stator assembly and the housing, a No. 2 O-ring is fitted between the outer ring wall of the housing, and a No. 1 O-ring is fitted between the pump cover plate and the housing.

[0008] Furthermore, the internal cavity of the vent is frustum-shaped, and several exhaust holes are arranged in an array at the upper end of the vent. A first spring is provided between the central rod and the hollow cylinder.

[0009] Furthermore, the locking part includes several slides arranged in a circumferential array on the inner ring wall of the fixed cylinder. A slider is slidably installed in the slide. A locking rod is slidably installed at the right end of the slide through a bracket. A second spring is provided between the locking rod and the bracket. A wedge block is fixedly installed at the right end of the slider.

[0010] Furthermore, a connecting rod that slides through the left end face of the fixed cylinder is fixedly installed on the left end of the slider, and an annular disk located between the fixed cylinder and the hollow cylinder is fixedly installed on the left end of several connecting rods. The annular disk is fixedly sleeved on the outer ring wall of the central rod.

[0011] Furthermore, the outer ring wall of the ventilator has a locking hole for engaging with the locking rod, and a No. 5 O-ring is provided between the fixed cylinder and the ventilator.

[0012] Furthermore, the mating part includes a hollow rotating cylinder rotatably installed inside the left end of the ventilator via a set support frame. A guide groove is provided through the outer ring wall of the hollow rotating cylinder, and the right end of the central rod movably passes through the hollow rotating cylinder.

[0013] Furthermore, a guide rod located in the guide groove is fixedly installed on the outer ring wall of the central rod, and a central rotating shaft is fixedly installed on the right end of the hollow rotating cylinder. The central rotating shaft is connected to the venting cylinder through a bearing.

[0014] Furthermore, several arc-shaped blades are fixedly installed together with the central rotating shaft and the outer ring wall of the hollow rotating cylinder in a circumferential array, and a scraping strip is fixedly installed on the side wall of the arc-shaped blades near the inner ring wall of the ventilator.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This energy-saving EOP electronic oil pump achieves multiple optimizations through the use of intermittent pulse airflow via a specially designed venting component. First, the airflow locks the venting valve, enhancing sealing under vibration and improving internal pressure stability. Second, the rotating arc-shaped blades dynamically scrape away oil mist from the inner wall of the venting valve, preventing oil deposits from clogging it. At the same time, the blades convert the airflow into a spiral flow, improving oil mist separation efficiency, reducing oil residue and airflow wear, thereby optimizing exhaust performance and extending the overall lifespan of the venting valve and the electronic oil pump, ensuring the long-term stable operation of the energy-saving motor.

[0016] 2. This energy-saving EOP electronic oil pump locks the vent valve through airflow when intermittent pulse airflow directly impacts the vent valve during the periodic oil discharge of the electronic oil pump. This enhances the sealing performance of the vent valve in a vibration environment, reduces the risk of valve core loosening or leakage caused by vibration, thereby improving the stability of the internal pressure of the electronic oil pump and extending the service life of the vent valve.

[0017] 3. This energy-saving EOP electronic oil pump uses intermittent pulsed airflow to dynamically scrape away oil mist adhering to the inner wall of the vent valve through rotating arc-shaped blades, effectively reducing oil deposits and preventing oil film from clogging the vent holes or affecting the valve core movement. At the same time, self-cleaning can maintain the sensitivity of the vent valve, reduce maintenance frequency and extend its service life, and ensure the long-term stable operation of the energy-saving motor.

[0018] 4. This energy-saving EOP electronic oil pump uses arc-shaped blades to transform pulsed airflow into spiral flow during rotation, allowing the airflow to exit the electronic oil pump more smoothly, reducing turbulence and pressure fluctuations. At the same time, the spiral airflow can enhance the oil mist separation effect, reduce oil residue, improve the working efficiency of the breather valve, and reduce the wear of the valve body caused by airflow impact, thereby optimizing the system exhaust performance and extending the service life of components. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a frontal three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 This is a rear-view stereoscopic structural diagram of the present invention.

[0022] Figure 3 This is a frontal view of the exploded three-dimensional structure of the present invention.

[0023] Figure 4 This is a rear-view exploded three-dimensional structural diagram of the present invention.

[0024] Figure 5 This is a schematic diagram of the connection between the back cover and the breathable component of the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of the breathable component of the present invention.

[0026] Figure 7 This is a three-dimensional structural schematic diagram of the cross-section of the breathable component of the present invention.

[0027] Figure 8 This is a schematic cross-sectional view of the breathable component of the present invention.

[0028] Figure 9 This is a partial three-dimensional structural diagram of the mating part and the locking part of the present invention.

[0029] In the diagram: 1. Housing; 2. Rear cover; 3. Ventilation assembly; 31. Fixed cylinder; 32. Ventilation cylinder; 321. Exhaust port; 33. Hollow cylinder; 34. Diaphragm; 35. Center rod; 351. Guide rod; 36. Locking part; 361. Slide rail; 362. Slider; 363. Wedge block; 364. Locking rod; 365. Annular disc; 37. Arc-shaped blade; 371. Center shaft; 38. Mating part; 381. Hollow rotating cylinder; 382. Guide groove; 4. Rotor assembly; 5. Magnetic sheet; 6. Stator assembly; 7. PCB board; 8. Outer rotor; 9. Inner rotor; 10. Pump cover plate; 11. No. 1 O-ring; 12. No. 2 O-ring; 13. No. 3 O-ring; 14. No. 4 O-ring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please refer to Figure 1 , Figure 5 , Figure 6 and Figure 7An energy-saving EOP electronic oil pump includes a housing 1 and a rear cover 2 fixedly installed on its right end by bolts. A venting component 3 is provided on the rear cover 2. The venting component 3 includes a fixed cylinder 31 fixedly installed through the right end face of the rear cover 2. A venting cylinder 32 is inserted into the right end of the fixed cylinder 31. A hollow cylinder 33 located inside the housing 1 is fixedly installed on the left end of the fixed cylinder 31 by a support rod. A diaphragm 34 is fixedly installed on the left end of the hollow cylinder 33.

[0032] A central rod 35 is slidably installed through the center of the hollow cylinder 33 and the ventilator 32. The central rod 35 is hinged to the diaphragm 34. A locking part 36 is provided on the ventilator 32. An arc-shaped blade 37 and a mating part 38 that cooperate with the central rod 35 to rotate are rotatably installed inside the ventilator 32.

[0033] The pulsed airflow generated by the electronic oil pump impacts the diaphragm 34 and pushes the center rod 35. The center rod 35 moves and locks the vent cylinder 32 through the locking part 36. At the same time, the cooperating part 38 rotates the arc-shaped blade 37 to scrape off the oil mist adhering to the inner wall of the vent cylinder 32, and the arc-shaped blade 37 rotates to discharge the pulsed airflow in a spiral manner; a mounting hole is provided through the housing 1.

[0034] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A rotor assembly 4 is rotatably mounted inside the housing 1. A magnetic sheet 5 is fixedly mounted on the right end of the rotor assembly 4. A stator assembly 6 is fixedly mounted on the right end inside the housing 1. A PCB board 7 located inside the housing 1 is fixedly mounted on the right side of the stator assembly 6. An outer rotor 8 is rotatably mounted on the left end inside the housing 1 through a set bearing. An inner rotor 9 that mates with the spline on the left end of the rotor assembly 4 is set inside the outer rotor 8. A pump cover plate 10 is fixedly mounted on the left end of the housing 1 through set bolts.

[0035] In actual operation, the energy-saving EOP electronic oil pump is installed on the housing 1 of the external drive powertrain (not shown in the figure). It has a semi-insertion structure and is fixedly installed to the mounting holes of the housing 1 by bolts.

[0036] When the energy-saving EOP electronic oil pump is used, the control circuit is controlled by the PCB board 7, and the rotor assembly 4 is driven by the external drive power assembly to rotate at high speed, so that the outer rotor 8 rotates at high speed through the stator assembly 6, and the inner rotor 9 rotates asynchronously with the outer rotor 8. The pump cover plate 10 forms an oil inlet or outlet channel. During the rotation, a negative pressure is formed at the pump cover plate 10, which draws the oil from the oil tank into the pump chamber. Under the asynchronous rotation of the inner rotor 9 and the outer rotor 8, the oil is compressed and pressurized in the pump chamber by the centrifugal force. The pressure gradually increases, forming a stable oil flow. Finally, the high-pressure oil is output through the oil outlet.

[0037] In speed mode, the energy-saving EOP electronic oil pump responds to the ECU's speed commands within a speed range of 100 rpm to 5000 rpm.

[0038] In fail-safe mode, after the energy-saving EOP electronic oil pump detects a command message loss fault in speed mode, it runs continuously at a fixed speed of 2500 rpm for 60 seconds. If no command message is received during the entire process, it enters sleep mode.

[0039] In fault mode, the energy-saving EOP electronic oil pump stops after detecting faults such as overcurrent, overpressure, overtemperature, and stall, and the fault mode status is fed back on the bus.

[0040] In standby mode, after the CAN message wakes up and activates the energy-saving EOP electronic oil pump, the energy-saving EOP electronic oil pump continues to periodically send back messages while in a stopped state.

[0041] In sleep mode, the energy-saving EOP electronic oil pump detects the loss of CAN command messages in standby mode and enters sleep mode after a period of time. At this time, the static current is <100uA@25℃, and the energy-saving EOP electronic oil pump has no message feedback on the bus.

[0042] By intelligently controlling the oil flow rate and adjusting the oil supply pressure as needed, the parasitic power loss of traditional mechanical oil pumps is reduced, thereby improving the overall energy efficiency of energy-saving electric motors.

[0043] Please see Figure 3 and Figure 4 A No. 4 O-ring 14 is fitted between the housing 1 and the rear cover 2, a No. 3 O-ring 13 is fitted between the stator assembly 6 and the housing 1, a No. 2 O-ring 12 is fitted between the outer ring wall of the housing 1, and a No. 1 O-ring 11 is fitted between the pump cover plate 10 and the housing 1.

[0044] In actual operation, the No. 4 O-ring 14 prevents oil from leaking out from the gap between the housing 1 and the rear cover 2, the No. 3 O-ring 13 seals the stator assembly 6 and the housing 1 to prevent oil mist from seeping into the stator assembly 6 area, the No. 2 O-ring 12 isolates external environmental pollutants from entering, and the No. 1 O-ring 11 forms a dynamic seal on the pump cover plate 10.

[0045] Please see Figure 7 , Figure 8 and Figure 9 The internal cavity of the vent cylinder 32 is frustum-shaped. Several exhaust holes 321 are arranged in an array at the upper end of the vent cylinder 32. A diaphragm is installed inside the exhaust hole 321. A No. 1 spring is installed between the central rod 35 and the hollow cylinder 33.

[0046] Please see Figure 7 , Figure 8 and Figure 9The locking part 36 includes a plurality of slides 361 arranged in a circumferential array on the inner ring wall of the fixed cylinder 31. A slider 362 is slidably installed in the slides 361. A locking rod 364 is slidably installed at the right end of the slides 361 through a bracket. A second spring is provided between the locking rod 364 and the bracket. A wedge block 363 is fixedly installed at the right end of the slider 362.

[0047] Please see Figure 7 , Figure 8 and Figure 9 A connecting rod that slides through the left end face of the fixed cylinder 31 is fixedly installed on the left end of the slider 362. Several connecting rods are fixedly installed on the left end of an annular disk 365 located between the fixed cylinder 31 and the hollow cylinder 33. The annular disk 365 is fixedly sleeved on the outer ring wall of the central rod 35.

[0048] Please see Figure 7 , Figure 8 and Figure 9 The outer ring wall of the ventilator 32 has a locking hole that engages with the locking rod 364, and a No. 5 O-ring is provided between the fixed cylinder 31 and the ventilator 32.

[0049] In actual operation, when the energy-saving EOP electronic oil pump is working, the periodic compression of the oil will produce intermittent pulse airflow. When the high-pressure pulse airflow reaches the position of the venting component 3, the high-pressure pulse airflow will directly impact the diaphragm 34, causing it to indent into the hollow cylinder 33, thereby pushing the center rod 35 to the right. Through the annular disc 365 and the connecting rod, the slider 362 is pushed to the right, so that the inclined surface of the slider 362 carrying the wedge block 363 contacts the locking rod 364, thereby pushing the locking rod 364 out of the bracket and inserting it into the locking hole of the venting cylinder 32. At this time, the locking rods 364 around will lock the venting cylinder 32 back into the fixed cylinder 31, thereby completing the locking of the venting valve.

[0050] The No. 5 O-ring seals the gap between the fixed cylinder 31 and the vent cylinder 32, while the No. 2 spring ensures that the locking rod 364 can be reset when the wedge block 363 moves away from the locking rod 364. This allows the vent valve to be locked when impacted by pulsed airflow, thereby enhancing the sealing performance of the vent valve in a vibration environment, reducing the risk of valve core loosening or leakage caused by vibration, improving the stability of the internal pressure of the electronic oil pump, and extending the service life of the vent valve.

[0051] The first spring can reset the center rod 35 when there is no pulsed airflow, thereby causing the diaphragm 34 to bulge away from the hollow cylinder 33. At this time, the re-locking of the vent cylinder 32 can be released, and the reciprocating movement of the center rod 35 can be driven by the intermittent generation of pulsed airflow.

[0052] Please see Figure 7 , Figure 8 and Figure 9The mating part 38 includes a hollow rotating cylinder 381 that is rotatably installed inside the left end of the ventilator 32 via a support frame. A guide groove 382 is provided through the outer ring wall of the hollow rotating cylinder 381, and the right end of the central rod 35 moves through the hollow rotating cylinder 381.

[0053] Please see Figure 7 , Figure 8 and Figure 9 A guide rod 351 located in the guide groove 382 is fixedly installed on the outer ring wall of the central rod 35. A central rotating shaft 371 is fixedly installed on the right end of the hollow rotating cylinder 381. The central rotating shaft 371 is connected to the ventilator 32 through a bearing.

[0054] Please see Figure 7 , Figure 8 and Figure 9 The central rotating shaft 371 and the outer ring wall of the hollow rotating cylinder 381 are jointly fixedly installed with several arc-shaped blades 37 in a circumferential array. A scraping strip is fixedly installed on the side wall of the arc-shaped blades 37 near the inner ring wall of the vent cylinder 32. Both the inner ring wall of the vent cylinder 32 and the arc-shaped blades 37 are coated with an oleophobic layer.

[0055] In actual operation, when the central rod 35 reciprocates, the guide rod 351 on the central rod 35 slides along the guide groove 382. Therefore, when the central rod 35 is pushed to the right, the hollow rotating cylinder 381 will rotate clockwise. When the central rod 35 is pulled back to the left, the hollow rotating cylinder 381 will rotate counterclockwise. Thus, the hollow rotating cylinder 381 and the central rotating shaft 371 reciprocate to rotate several arc-shaped blades 37. During the rotation of the arc-shaped blades 37, the oil mist adhering to the inner ring wall of the vent cylinder 32 will be scraped off by the scraping strip.

[0056] This method uses intermittent pulsed airflow to dynamically scrape away the oil mist adhering to the inner wall of the vent valve, effectively reducing oil deposits and preventing oil film from clogging the vent holes or affecting the valve core movement. At the same time, self-cleaning can maintain the sensitivity of the vent valve, reduce maintenance frequency, and extend its service life.

[0057] Furthermore, the arc-shaped blade 37 can convert the pulsed airflow into a spiral flow during rotation, allowing the airflow to be discharged from the electronic oil pump more smoothly and reducing turbulence and pressure fluctuations.

[0058] At the same time, the rotation of the arc blade 37 causes the pulse airflow to generate a swirling effect, which accelerates the centrifugal separation of oil mist particles and discharges the impurities removed by the scraper along the spiral path with the airflow, avoiding secondary deposition in the channel. Through the dual self-cleaning effect, the inner wall is cleaned simultaneously during the air permeation process, maintaining the unobstructed passage.

[0059] This reduces oil residue, improves the working efficiency of the vent valve, and reduces the wear of the valve body caused by airflow impact, thereby optimizing the system's exhaust performance, extending component life, and ensuring the long-term stable operation of the energy-saving motor.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An energy-saving EOP electronic oil pump, comprising a housing (1) and a rear cover (2) fixedly mounted on its right end, characterized in that: The rear cover (2) is provided with a breathable component (3); The ventilation component (3) includes a fixed cylinder (31) that is fixedly installed through the right end face of the rear cover (2). A ventilation cylinder (32) is inserted into the right end of the fixed cylinder (31). A hollow cylinder (33) located inside the housing (1) is fixedly installed at the left end of the fixed cylinder (31) by a set support rod. A diaphragm (34) is fixedly installed at the left end of the hollow cylinder (33). A central rod (35) is slidably installed through the center of the hollow cylinder (33) and the ventilator (32). The central rod (35) is hinged to the diaphragm (34). A locking part (36) is provided on the ventilator (32). An arc-shaped blade (37) and a mating part (38) that cooperates with the central rod (35) to rotate are rotatably installed inside the ventilator (32). The pulsed airflow generated by the electronic oil pump impacts the diaphragm (34) and pushes the center rod (35). The center rod (35) moves and locks the ventilator (32) through the locking part (36). At the same time, the mating part (38) rotates the arc-shaped blade (37) to scrape off the oil mist adhering to the inner wall of the ventilator (32), and the arc-shaped blade (37) rotates to discharge the pulsed airflow in a spiral manner.

2. The energy-saving EOP electronic oil pump as described in claim 1, characterized in that: A rotor assembly (4) is rotatably mounted inside the housing (1). A magnetic sheet (5) is fixedly mounted on the right end of the rotor assembly (4). A stator assembly (6) is fixedly mounted on the right end inside the housing (1). A PCB board (7) located inside the housing (1) is fixedly mounted on the right side of the stator assembly (6). An outer rotor (8) is rotatably mounted on the left end inside the housing (1) through a set bearing. An inner rotor (9) that is splined to the left end of the rotor assembly (4) is set inside the outer rotor (8). A pump cover plate (10) is fixedly mounted on the left end of the housing (1).

3. The energy-saving EOP electronic oil pump as described in claim 2, characterized in that: A No. 4 O-ring (14) is fitted between the housing (1) and the rear cover (2), a No. 3 O-ring (13) is fitted between the stator assembly (6) and the housing (1), a No. 2 O-ring (12) is fitted between the outer ring wall of the housing (1), and a No. 1 O-ring (11) is fitted between the pump cover plate (10) and the housing (1).

4. The energy-saving EOP electronic oil pump as described in claim 1, characterized in that: The internal cavity of the ventilator (32) is frustum-shaped, and several exhaust holes (321) are arranged in an array at the upper end of the ventilator (32). A No. 1 spring is provided between the central rod (35) and the hollow cylinder (33).

5. The energy-saving EOP electronic oil pump as described in claim 1, characterized in that: The locking part (36) includes several slides (361) arranged in a circumferential array on the inner ring wall of the fixed cylinder (31). A slider (362) is slidably installed in the slide (361). A locking rod (364) is slidably installed at the right end of the slide (361) through a bracket. A second spring is provided between the locking rod (364) and the bracket. A wedge block (363) is fixedly installed at the right end of the slider (362).

6. The energy-saving EOP electronic oil pump as described in claim 5, characterized in that: The left end of the slider (362) is fixedly installed with a connecting rod that slides through the left end face of the fixed cylinder (31). The left ends of several connecting rods are jointly fixedly installed with an annular disk (365) located between the fixed cylinder (31) and the hollow cylinder (33). The annular disk (365) is fixedly sleeved on the outer ring wall of the central rod (35).

7. The energy-saving EOP electronic oil pump as described in claim 5, characterized in that: The outer ring wall of the ventilator (32) is provided with a locking hole that can be inserted into the locking rod (364), and a No. 5 O-ring is provided between the fixed cylinder (31) and the ventilator (32).

8. The energy-saving EOP electronic oil pump as described in claim 1, characterized in that: The mating part (38) includes a hollow rotating cylinder (381) rotatably installed inside the left end of the ventilator (32) via a support frame. A guide groove (382) is provided through the outer ring wall of the hollow rotating cylinder (381), and the right end of the central rod (35) movably passes through the hollow rotating cylinder (381).

9. The energy-saving EOP electronic oil pump as described in claim 8, characterized in that: A guide rod (351) located in the guide groove (382) is fixedly installed on the outer ring wall of the center rod (35). A central rotating shaft (371) is fixedly installed on the right end of the hollow rotating cylinder (381). The central rotating shaft (371) is connected to the ventilator (32) through a bearing.

10. The energy-saving EOP electronic oil pump as described in claim 1 or 9, characterized in that: A number of arc-shaped blades (37) are fixedly installed on the outer ring wall of the central rotating shaft (371) and the hollow rotating cylinder (381) in a circumferential array. A scraping strip is fixedly installed on one side wall of the arc-shaped blades (37) near the inner ring wall of the ventilator (32).

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