CN210859185U - Electronic oil pump pressure relief structure - Google Patents
Electronic oil pump pressure relief structure Download PDFInfo
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- CN210859185U CN210859185U CN201921906044.5U CN201921906044U CN210859185U CN 210859185 U CN210859185 U CN 210859185U CN 201921906044 U CN201921906044 U CN 201921906044U CN 210859185 U CN210859185 U CN 210859185U
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- valve
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- pressure relief
- pump
- relief valve
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- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides an electron oil pump pressure release structure, including pump case (2) and relief valve (8), form oil drainage tank (24) and pressure release hole (25) on pump case (2) respectively, form pressure release incision (84) on relief valve (8), form the fixed connection structure between relief valve (8) and pump case (2), and when the opening pressure of hydraulic pressure force in pressure release hole (25) is more than or equal to relief valve (8), relief valve (8) are opened, and the intercommunication forms fluid passage between oil drainage tank (24), pressure release hole (25), the pressure release incision (84). The utility model discloses a set up the relief valve to when the hydraulic pressure in the pressure release hole is more than or equal to the cracking pressure of relief valve, be in the open mode through the relief valve, make fluid in the electron oil pump can in time discharge through the relief valve, can reduce the oil circuit pressure that produces oil of electron oil pump from this, make the safe operation reliability of electron oil pump can improve correspondingly.
Description
Technical Field
The utility model belongs to the technical field of the electronic oil pump structural design and specifically relates to an electronic oil pump pressure release structure who is applied to automobile lubrication system or cooling system is related to.
Background
The common electronic oil pump comprises two parts of a motor and a pump head, wherein the pump head mainly comprises a pump shell, an outer rotor and an inner rotor, and the inner rotor is directly driven by the motor through a motor shaft.
Although the electronic oil pump is already mature and applied to a lubricating system or a cooling system of an automobile, in the practical application process, the oil path of the electronic oil pump is easy to be blocked, and the working reliability of the electronic oil pump is affected. Especially, when the oil outlet passage of the electronic oil pump is blocked, the oil passage or the pump head structure is easily damaged, and the motor is in a high-load or even locked-rotor state for a long time, which finally causes the motor to be burnt.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: to the problem that prior art exists, provide an electron oil pump pressure release structure, improve the operation fail safe nature of electron oil pump.
The to-be-solved technical problem of the utility model adopts following technical scheme to realize: the utility model provides an electron oil pump pressure release structure, includes pump case and relief valve, the pump case on form the oil drain groove, the relief valve on form the pressure release incision, the pump case on form the pressure release hole, relief valve and pump case between form fixed connection structure, and when the opening pressure of hydraulic pressure force in the pressure release hole is more than or equal to the relief valve, the relief valve open, oil drain groove, pressure release hole, pressure release incision between communicate and form fluid passage.
Preferably, the pressure relief valve comprises a valve core and a valve housing, the valve housing is a hollow cavity structure, and a pressure relief notch is formed in the valve housing; the pressure relief valve is characterized in that the valve housing is fixedly connected with the pump housing, a spring is arranged in an inner cavity of the valve housing, the valve core is arranged between the pressure relief hole and the spring, and when hydraulic pressure in the pressure relief hole is smaller than opening pressure of the pressure relief valve, the valve core and the pressure relief hole form an elastic contact sealing structure under the action of the spring.
Preferably, the valve core is of a spherical structure, and the diameter of the valve core is larger than that of the pressure relief hole.
Preferably, the pressure relief cut-out on the valve housing is of a U-shaped cut-out structure.
Preferably, the pressure relief notch on the valve housing is a through hole structure.
Preferably, the valve housing and the pump housing are fixedly connected by welding.
Preferably, an assembly counter bore structure is formed on the pump casing, and an interference fit structure is formed between the valve casing and the assembly counter bore on the pump casing.
Compared with the prior art, the beneficial effects of the utility model are that: through setting up the relief valve, form the pressure release hole on the pump case to when the hydraulic pressure in the pressure release hole is greater than or equal to the cracking pressure of relief valve, the relief valve is in the open mode, and the intercommunication forms fluid passage between oil extraction groove, pressure release hole, the pressure release incision, so that fluid in the electronic oil pump can in time discharge through the relief valve, thereby has reduced the oil circuit pressure of producing oil of electronic oil pump, has protected the safe operation of electronic oil pump effectively.
Drawings
Fig. 1 is an exploded view of the construction of an electronic oil pump.
Fig. 2 is a sectional view of the electronic oil pump.
Fig. 3 is a view from a-a in fig. 2.
Fig. 4 is a three-dimensional configuration diagram of the pump casing of fig. 1 or 2.
FIG. 5 is a schematic view of the configuration of the inboard end face of the cavity of the pump casing shown in FIG. 4.
Fig. 6 is a schematic diagram of the structure explosion of the electronic oil pump pressure relief structure of the present invention.
Fig. 7 is a cross-sectional view of the electronic oil pump pressure relief structure of the present invention.
Fig. 8 is a schematic three-dimensional structure of the valve housing in fig. 6 or 7 (embodiment 1).
Fig. 9 is a schematic three-dimensional structure of the valve housing in fig. 6 or 7 (embodiment 2).
Part label name in the figure: 1-screw, 2-pump shell, 3-outer rotor, 4-inner rotor, 5-coupler, 6-motor, 7-motor shaft, 8-pressure relief valve, 21-pump shell oil inlet, 22-pump shell oil outlet, 23-oil inlet groove, 24-oil discharge groove, 25-pressure relief hole, 81-valve core, 82-spring, 83-valve shell and 84-pressure relief notch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The electronic oil pump pressure relief structure shown in fig. 1, 2 and 3 mainly comprises a pump shell 2, an outer rotor 3, an inner rotor 4 and a pressure relief valve 8, wherein the pump shell 2 is a hollow cavity structure shown in fig. 4, 5 and 6, a cavity capable of containing the outer rotor 3 and the inner rotor 4 is formed inside the pump shell 2, an oil inlet groove 23 and an oil discharge groove 24 are respectively arranged on the side end surface in the cavity, a pump shell oil inlet 21 and a pressure relief hole 25 are axially arranged outside the pump shell 2, a pump shell oil outlet 22 is arranged in the circumferential direction outside the pump shell 2, the oil inlet groove 23 is communicated with the pump shell oil inlet 21, the oil discharge groove 24 is communicated with the pump shell oil outlet 22, and the pressure relief hole 25 is communicated with the. The pump case 2 forms a detachable fixed connection structure with the casing of the motor 6 through the screw 1, the motor 6 forms a transmission connection structure between the motor shaft 7 and the coupler 5, the coupler 5 and the inner rotor 4 form a transmission connection structure, and the inner rotor 4 and the outer rotor 3 form an inner meshing gear transmission structure, as shown in fig. 3.
As shown in fig. 2 and 7, a fixed connection structure is formed between the relief valve 8 and the pump housing 2, and when the oil pressure in the pump housing oil outlet 22 is too high, the excessive pressure can be relieved through the relief valve 8. The specific structure of the relief valve 8 is as shown in fig. 6 and 7, and mainly includes a valve core 81 and a valve housing 83, the valve housing 83 is a hollow cavity structure, a relief notch 84 is formed on the valve housing 83, the valve housing 83 is fixedly connected with the pump housing 2, a spring 82 is arranged in an inner cavity of the valve housing 83, the valve core 81 is arranged between the relief hole 25 and the spring 82, the spring 82 axially supports the valve core 81, and the force value thereof determines the opening pressure of the relief valve 8. When the hydraulic pressure in the pressure relief hole 25 is greater than or equal to the opening pressure of the pressure relief valve 8, the valve core 81 is pushed away, the spring 82 is compressed, at this time, the pressure relief valve 8 is opened, and the oil drainage groove 24, the pressure relief hole 25 and the pressure relief notch 84 are communicated to form a fluid channel, so that the medium in the oil drainage groove 24 can flow out from the gap between the valve core 81 and the pressure relief hole 25 and finally flow out through the pressure relief notch 84 on the valve housing 83. However, when the hydraulic pressure in the relief hole 25 is smaller than the opening pressure of the relief valve 8, the valve element 81 forms an elastic contact seal structure with the relief hole 25 by the spring 82, and at this time, the valve element 81 covers the relief hole 25 from the outside.
Usually, the valve housing 83 and the pump housing 2 may be fixedly connected by welding, or an assembly counterbore structure may be formed on the pump housing 2 by machining, and then an interference fit structure may be formed between the valve housing 83 and the assembly counterbore on the pump housing 2. The relief cut 84 of the valve housing 83 may be designed as a U-shaped cut as shown in fig. 8, or as a through hole as shown in fig. 9. The valve element 81 is preferably of a spherical structure, and the diameter of the valve element 81 is larger than that of the pressure relief hole 25, so that the valve element 81 can cover the pressure relief hole 25 from the outside, and the valve element 81 forms an elastic contact sealing structure with the pressure relief hole 25 under the action of the spring 82.
The utility model discloses a set up relief valve 8 to when making the hydraulic pressure force in the oil drain groove 24 be greater than or equal to relief valve 8's opening pressure, relief valve 8 is in the open mode promptly, make intercommunication and form a fluid passage between oil drain groove 24, pressure release hole 25, the pressure release incision 84, consequently, fluid in the electron oil pump inner chamber can in time be discharged through this fluid passage, has reduced the oil circuit pressure that produces oil of electron oil pump from this, thereby has protected the safe operation of electron oil pump effectively.
The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.
Claims (7)
1. The utility model provides an electron oil pump pressure release structure, includes pump case (2), pump case (2) on form oil drain groove (24), its characterized in that: still include relief valve (8), relief valve (8) on form pressure release incision (84), pump case (2) on form pressure release hole (25), relief valve (8) and pump case (2) between form fixed connection structure, and when the opening pressure of hydraulic pressure in pressure release hole (25) more than or equal to relief valve (8), relief valve (8) open, oil drain groove (24), pressure release hole (25), pressure release incision (84) between communicate and form fluid passage.
2. The electronic oil pump pressure relief structure according to claim 1, characterized in that: the pressure relief valve (8) comprises a valve core (81) and a valve shell (83), the valve shell (83) is of a hollow cavity structure, and a pressure relief notch (84) is formed in the valve shell (83); the pressure relief valve is characterized in that the valve housing (83) is fixedly connected with the pump housing (2), the spring (82) is arranged in the inner cavity of the valve housing (83), the valve core (81) is arranged between the pressure relief hole (25) and the spring (82), and when hydraulic pressure in the pressure relief hole (25) is smaller than opening pressure of the pressure relief valve (8), the valve core (81) and the pressure relief hole (25) form an elastic contact sealing structure under the action of the spring (82).
3. The electronic oil pump pressure relief structure according to claim 2, characterized in that: the valve core (81) is of a spherical structure, and the diameter of the valve core (81) is larger than that of the pressure relief hole (25).
4. The electronic oil pump pressure relief structure according to claim 2, characterized in that: the pressure relief notch (84) on the valve shell (83) is of a U-shaped notch structure.
5. The electronic oil pump pressure relief structure according to claim 2, characterized in that: the pressure relief notch (84) on the valve shell (83) is of a through hole structure.
6. The electronic oil pump pressure relief structure according to claim 2, characterized in that: the valve shell (83) and the pump shell (2) form a fixed connection structure in a welding mode.
7. The electronic oil pump pressure relief structure according to claim 2, characterized in that: an assembly counter bore structure is formed on the pump shell (2), and an interference fit structure is formed between the valve shell (83) and the assembly counter bore on the pump shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921906044.5U CN210859185U (en) | 2019-11-06 | 2019-11-06 | Electronic oil pump pressure relief structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921906044.5U CN210859185U (en) | 2019-11-06 | 2019-11-06 | Electronic oil pump pressure relief structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210859185U true CN210859185U (en) | 2020-06-26 |
Family
ID=71309151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921906044.5U Active CN210859185U (en) | 2019-11-06 | 2019-11-06 | Electronic oil pump pressure relief structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210859185U (en) |
-
2019
- 2019-11-06 CN CN201921906044.5U patent/CN210859185U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 621000 No.37 Fenghuang Middle Road, high end equipment manufacturing industrial park, Fucheng District, Mianyang City, Sichuan Province Patentee after: Fulin Precision Co.,Ltd. Address before: 621000 No.37 Fenghuang Middle Road, high end equipment manufacturing industrial park, Fucheng District, Mianyang City, Sichuan Province Patentee before: Mianyang Fulin Jinggong Co.,Ltd. Address after: 621000 No.37 Fenghuang Middle Road, high end equipment manufacturing industrial park, Fucheng District, Mianyang City, Sichuan Province Patentee after: Mianyang Fulin Jinggong Co.,Ltd. Address before: 621000 No.37 Fenghuang Middle Road, high end equipment manufacturing industrial park, Fucheng District, Mianyang City, Sichuan Province Patentee before: MIANYANG FULIN PRECISION MACHINING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231113 Address after: 621000 No. 27, longhui Road, Guangfu village, Wujia Town, Fucheng District, Mianyang City, Sichuan Province Patentee after: Sichuan Xinzhi Thermal Control Technology Co.,Ltd. Address before: 621000 No.37 Fenghuang Middle Road, high end equipment manufacturing industrial park, Fucheng District, Mianyang City, Sichuan Province Patentee before: Fulin Precision Co.,Ltd. |
|
| TR01 | Transfer of patent right |