Self-adaptive catheter
By designing valve cores and control components in the adaptive conduit, the oil output is adjusted according to the rotational speed of the rotating parts, solving the problem of unadaptive control of coolant flow. This achieves efficient cooling and low loss of the rotating parts, and has the advantages of compact structure and low cost.
Patent Information
- Application Number
- CN202423320657.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing technologies, the coolant flow rate of rotating parts cannot be adaptively controlled, resulting in increased mechanical losses and reduced efficiency at different speeds.
Design an adaptive conduit that adjusts the oil output according to the rotational speed of the rotating component through the cooperation of the valve core and control components. It uses centrifugal force and spring force to control the opening of the oil outlet channel, thereby achieving adaptive adjustment of the coolant flow rate.
It reduces mechanical wear on rotating parts, improves mechanical efficiency, and has a compact structure and low cost.
Smart Images
Figure CN223578939U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of new energy vehicles, in particular to a self-adaptive conduit. BACKGROUND
[0002] Figure 1 As shown in the figure, it is a common oil feeding scheme for rotating parts. The fixed part 300 (such as a motor stator) in the power system, the rotating part 200 (such as a motor rotor) in the power system, and the conduit 400 are combined for use. The conduit 400 is assembled in the rotating part 200, and the rotating part 200 is internally hollow.
[0003] The conduit 400 is an internally hollow part, and its main function is to guide the cooling liquid into the rotating part 200 to achieve heat dissipation and lubrication. In the system, part of the cooling liquid goes to the fixed part 300, and the other part goes to the rotating part 200 through the conduit 400. It can be intuitively judged that when the structure is fixed, the liquid flow into the rotating part cannot be self-adaptively controlled, and the flow distribution with the fixed part is fixed and cannot be adjusted.
[0004] Therefore, there is an urgent need to develop a self-adaptive conduit to adjust the oil output of the self-adaptive conduit according to the rotating speed of the rotating part and improve the economy. CONTENT OF THE INVENTION
[0005] The present application mainly provides a self-adaptive conduit, which can adjust the oil output of the self-adaptive conduit according to the rotating speed of the rotating part and improve the economy.
[0006] To solve the above technical problems, the technical scheme adopted by the present application is to provide a self-adaptive conduit for feeding oil to a rotating part, which comprises a shell, a valve core and a control part, wherein the shell is a hollow structure, oil is fed from an oil feeding channel of the shell and oil is discharged from an oil discharging channel of the shell; the valve core is located between the oil feeding channel and the oil discharging channel; the control part is connected with the valve core and is used to control the position of the valve core in the shell according to the rotating speed of the rotating part, so as to control the oil output in the oil discharging channel.
[0007] The self-adaptive conduit further comprises a first pipeline, the valve core is located in the first pipeline, and the first pipeline communicates the oil feeding channel and the oil discharging channel; wherein the oil feeding channel and the oil discharging channel extend along the axial direction of the shell.
[0008] The first pipeline extends along the radial direction of the shell, or the included angle between the extension direction of the first pipeline and the axial direction of the shell is less than 90 degrees.
[0009] The self-adaptive conduit further comprises a plug cover, which is clamped on the shell and is used to block the first pipeline.
[0010] The control member includes a spring, one end of which is connected to the valve core and one end of which is connected to the plug. The greater the rotational speed of the rotating member, the greater the elastic force of the spring on the valve core. At this time, the amount of oil entering the oil outlet channel through the oil inlet channel is greater.
[0011] The plug further includes a shoulder, the inner diameter of which is smaller than the outer diameter of the valve core, preventing the valve core from further compressing the control member.
[0012] The plug further includes a pressure relief port that passes through the outer wall of the plug away from the valve core.
[0013] The oil outlet channel gradually increases in cross-sectional width from the side close to the oil inlet channel to the side away from the oil inlet channel.
[0014] The oil outlet channel is arranged in an array, and the number of valve cores matches the number of oil outlet channels.
[0015] The adaptive conduit further includes a sealing groove and a sealing ring, wherein the sealing groove is located on the outer side of the housing and is arranged along the circumference of the housing; and the sealing ring is placed in the sealing groove.
[0016] The adaptive conduit of the present application can automatically control the opening of the oil outlet channel according to the rotational speed of the rotating member through the design of the valve core and the control member, thereby reducing the mechanical loss of the rotating member and improving the efficiency. At the same time, it has the advantages of compact structure and low cost. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:
[0018] Figure 1 Structure diagram of an embodiment of the rotating member oil passage scheme in the prior art;
[0019] Figure 2 Structure diagram of an embodiment of the rotating member oil passage scheme in the present application;
[0020] Figure 3 Structure diagram of an embodiment of the adaptive conduit in the present application;
[0021] Figure 4 Structure diagram of an embodiment of the adaptive conduit in the present application; Figure 3 Structure diagram of a partial cross-section of an embodiment of the adaptive conduit in the present application;
[0022] Figure 5 Figure 1 is a schematic diagram of the overall cross-sectional structure of an embodiment of the adaptive conduit. Figure 3 Figure 2 is a schematic diagram of the overall cross-sectional structure of another embodiment of the adaptive conduit.
[0023] Figure 6 Figure 3 is a schematic diagram of the overall cross-sectional structure of another embodiment of the adaptive conduit. Figure 3 Figure 4 is a schematic diagram of the overall cross-sectional structure of another embodiment of the adaptive conduit.
[0024] Figure 7 Figure 5 is a schematic diagram of the structure of an embodiment of the plug. Figure 3 Figure 6 is a schematic diagram of the side structure of an embodiment of the plug.
[0025] Figure 8 Figure 7 is a schematic diagram of the side structure of an embodiment of the plug. Figure 3 Figure 8 is a schematic diagram of the side structure of an embodiment of the plug.
[0026] Figure 9 Figure 9 is a schematic diagram of the top structure of an embodiment of the oil outlet channel in the adaptive conduit. Figure 3 Figure 10 is a schematic diagram of the top structure of an embodiment of the oil outlet channel in the adaptive conduit.
[0027] Figure 10 Figure 11 is a schematic diagram of the force on the valve core in the adaptive conduit of an embodiment of the application.
[0028] Figure 11 Figure 12 is a schematic diagram of the rotation radius of the valve core and the rotation speed of the motor in the adaptive conduit of an embodiment of the application.
[0029] Figure 12 Figure 13 is a schematic diagram of the local cross-section corresponding to a rotation radius r1 of the valve core. Figure 11 Figure 14 is a schematic diagram of the local cross-section corresponding to a rotation radius r2 of the valve core.
[0030] Figure 13 Figure 15 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core. Figure 11 Figure 16 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core.
[0031] Figure 14 Figure 17 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core. Figure 11 Figure 18 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core. Figure 19 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core.
[0032] Figure 20 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core. Figure 21 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core.
[0033] Figure 22 is a schematic diagram of the local cross-section corresponding to a rotation radius r3 of the valve core. DETAILED DESCRIPTION
[0034] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the protection scope of the present application.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," "having" and variations thereof herein is meant to encompass the inclusion of the recited elements but not the exclusion of others.
[0036] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.
[0037] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, or necessarily alternatives to other embodiments. It will be explicitly and implicitly appreciated by those of ordinary skill in the art that embodiments described herein can be combined with other embodiments.
[0038] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0039] Please refer to Figure 1In the prior art, the rotating part 200 uses a hollow straight-through conduit 400 to enter oil, and the amount of oil entering the rotating part 200 cannot be controlled. When the rotating part 200 has too much cooling liquid, the kinetic energy loss of the cooling liquid is inevitably increased, and the mechanical efficiency of the rotating part 200 is reduced. In the vehicle power system, for example, the motor. The main objects of motor heat dissipation and cooling are the fixed part 300 (motor stator) and the rotating part 200 (motor rotor). At present, the rotating part 200 loss ratio gradually increases with the increase of the rotating speed, that is, the cooling flow demand is small at low speed, and the demand is high at high speed.
[0040] As Figure 1 The scheme, the motor stator (fixed part 300) and the motor rotor (rotating part 200) have a fixed flow ratio. In the low-speed working condition, the rotor (rotating part 200) has too much flow, which increases the mechanical loss of the rotating part 200 and reduces the efficiency.
[0041] Please refer to Figure 2 , Figure 3 and Figure 4 , the application provides a self-adaptive conduit 100 for sending oil to the rotating part 200, which comprises a shell 10, a valve core 20 and a control part 30, wherein the shell 10 is a hollow structure, the oil enters from the oil inlet channel 11 of the shell 10, and the oil outlet channel 12 of the shell 10; the valve core 20 is located between the oil inlet channel 11 and the oil outlet channel 12; the control part 30 and the valve core 20 are connected, which is used for controlling the position of the valve core 20 in the shell 10 according to the rotating speed of the rotating part 200, so as to control the amount of oil in the oil outlet channel 12. In the application, the self-adaptive conduit 100 utilizes the centrifugal force of the valve core 20 in the rotating process, the compression elastic force of the control part 30, and cooperates with the structure design of the shell 10 to adaptively control the opening of the self-adaptive conduit 100, so as to realize the adaptive control of the cooling liquid entering the rotating part 200, reduce the loss of the rotating part 200, and improve the efficiency. Specifically, when the rotating speed of the rotating part 200 is large, the cooling liquid in the oil outlet channel 12 flowing into the rotating part 200 is more; when the rotating speed of the rotating part 200 is small, the cooling liquid in the oil outlet channel 12 flowing into the rotating part 200 is less or even none.
[0042] Please continue to refer to Figure 2 , the self-adaptive conduit 100 is connected with the rotating part 200, and the rotating part 200 is designed as a hollow structure. The cooling liquid enters the fixed part 300 and the rotating part 200 respectively, wherein the cooling liquid enters the rotating part 200 through the self-adaptive conduit 100. In the application, the self-adaptive conduit 100 can adaptively adjust the opening of the oil outlet channel 12 according to the rotating speed of the rotating part 200, so as to control the flow of the cooling liquid entering the rotating part 200, thereby reducing the loss of the rotating part 200 and improving the mechanical efficiency.
[0043] Please continue to refer to Figure 3 and Figure 4The adaptive conduit 100 further comprises a first pipeline 21, the valve core 20 is located in the first pipeline 21, and the first pipeline 21 is communicated with the oil inlet channel 11 and the oil outlet channel 12; wherein the oil inlet channel 11 and the oil outlet channel 12 both extend along the axial direction of the shell 10. Specifically, the oil inlet channel 11 and the oil outlet channel 12 have the same extension direction, facilitating the valve core 20 to control the flow of the cooling liquid in the oil outlet channel 12. The valve core 20 is located in the first pipeline 21, and plays a role of controlling the opening degree of the oil outlet channel 12.
[0044] Please refer to Figure 5 , the first pipeline 21 extends along the radial direction of the shell 10; at this time, the extension direction of the first pipeline 21 is perpendicular to the extension direction of the oil inlet channel 11 and the oil outlet channel 12, facilitating processing.
[0045] Please refer to Figure 6 , the angle between the extension direction of the first pipeline 21 and the axial direction of the shell 10 is less than 90 degrees. The first pipeline 21 has various design modes, facilitating processing.
[0046] Please refer to Figure 4 , Figure 7 and Figure 8 , the adaptive conduit 100 further comprises a plug cover 40, which is clamped on the shell 10 and is used for plugging the first pipeline 21. Specifically, the plug cover 40 is designed to facilitate the installation of the control member 30, and simultaneously plugging the first pipeline 21.
[0047] Please continue to refer to Figure 3 , the control member 30 comprises a spring 31, one end of which is connected with the valve core 20, and the other end of which is connected with the plug cover 40; the greater the rotating speed of the rotating member 200 is, the greater the elastic force of the spring 31 on the valve core 20 is, and at this time, the greater the oil amount entering the oil outlet channel 12 through the oil inlet channel 11 is. Specifically, after the rotating speed of the rotating member 200 increases, the centrifugal force of the valve core 20 increases, at this time, the pressure of the valve core 20 on the spring 31 increases, and the spring 31 has a rebound force on the valve core 20, at this time, the valve core 20 further presses the spring 31, and the opening degree of the oil outlet channel 12 is increased.
[0048] Please refer to Figure 4 , Figure 7 and Figure 8 , the plug cover 40 further comprises a shoulder 41, the inner diameter of the shoulder 41 is less than the outer diameter of the valve core 20, preventing the valve core 20 from further compressing the control member 30. Specifically, through the design of the shoulder 41, when the rotating speed of the rotating member 200 is very large, the valve core 20 is prevented from further pressing the spring 31, so as to avoid the failure of the spring 31, and thus the design of the shoulder 41 can protect the spring 31 and improve the service life of the spring 31.
[0049] Please refer to Figure 4 , Figure 7 and Figure 8The plug 40 further comprises a pressure relief hole 42 passing through the outer wall of the plug 40 away from the spool 20. Specifically, the air pressure on the compressed side of the spring 31 is reduced, and in order to reduce the resistance of the spool 20 movement, the pressure relief hole 42 is provided on the plug 40 to facilitate the movement of the spool 20.
[0050] Please refer to Figure 9 The oil outlet channel 12 gradually increases in cross-sectional width from the side close to the oil inlet channel 11 to the side away from the oil inlet channel 11. In this way, as the spool 20 moves, the interface width of the oil outlet channel 12 increases, so that the oil outlet amount is further increased.
[0051] Please refer to Figure 9 The oil outlet channels 12 are arranged in an array. Specifically, the oil outlet channels 12 can be provided in multiple numbers, for example, two, three, four or more, and the design of multiple oil outlet channels 12 can facilitate the control of the oil outlet amount.
[0052] In an embodiment, the number of spools 20 and the number of oil outlet channels 12 are designed to match. So that the spool 20 can control the corresponding oil outlet channel 12, which is convenient to use.
[0053] Please refer to Figure 3 The adaptive conduit 100 further comprises a sealing groove 50 and a sealing ring 51, wherein the sealing groove 50 is located on the outer side of the shell 10 and is arranged along the circumference of the shell 10; the sealing ring 51 is placed in the sealing groove 50. Specifically, the sealing groove 50 is designed along the circumference of the shell 10, and at the same time, the sealing groove 50 is designed in the sealing cavity, which plays a sealing role and improves the transmission effect of the adaptive conduit 100.
[0054] Please refer to Figure 10 When the rotating member 200 is working, the spool 20 generates a centrifugal force (not considering the centrifugal force of the spring 31), thereby doing a centrifugal motion and compressing the spring 31. At the same time, the spring 31 generates an elastic force. The physical expression is as follows:
[0055] F r = m * 4π 2 n 2 * r Formula 1.
[0056] F n = K * (r - r0) Formula 2.
[0057] Wherein, m is the mass of the spool 20; n is the motor speed; r is the rotating radius of the spool 20 when rotating; r0 is the initial state rotating radius of the spool 20; K is the stiffness of the spring 31.
[0058] Please refer to Figure 11 , Figure 12 , Figure 13 and Figure 14 , Figure 11is the r-n theoretical curve of the spool 20 in the balanced state. When the spool 20 is balanced at point A (n1, r1), the rotation speed is continuously increased, the radius of the spool 20 is increased, and the spool 20 is balanced at point B (n2, r2). Similarly, the rotation speed is continuously increased, the spool 20 is continuously moved to point C (n3, r3) and balanced. Point D (n4, r max ) is the limit compression position of the spring 31.
[0059] As Figure 12 , Figure 13 and Figure 14 , the physical position of the spool 20 and the opening state of the oil outlet passage 12 at points A, B and C are shown.
[0060] Please refer to Figure 12 , at point A (n1, r1), the spool 20 blocks the communication between the first pipeline 21 and the oil outlet passage 12. The coolant cannot enter the oil outlet passage 12 through the oil inlet passage 11 and the first pipeline 21, and further cannot enter the rotating part 200.
[0061] Please refer to Figure 13 , at point B (n2, r2), the spool 20 is at the critical point of blocking the first pipeline 21 and the oil outlet passage 12, at this time, the same as point A, the coolant cannot enter the rotating part 200. The rotation speed is continuously increased, the spool 20 is moved to point C, at this time, the oil outlet passage is gradually opened, and the rotating part 200 starts to enter the oil.
[0062] Please refer to Figure 14 , when the rotation speed is increased, the position of the spool 20 is from point B to point C (n3, r3), at this time, the first pipeline 21 and the oil outlet passage 12 are completely communicated, and the flow of the coolant flowing into the rotating part 200 reaches the maximum.
[0063] Please continue to refer to Figure 14 , when the spool 20 is from point C, the rotation speed is increased to point D (n4, r max ), the compression limit of the spring 31 is reached. When the rotation speed is continuously increased, the strength and service life of the spring 31 will be rapidly decreased. In order to solve the problem, the stop shoulder 41 is arranged on the plug 40. The stop shoulder 41 is arranged in the first pipeline 21. When the spool 20 reaches point C (n3, r3), the spool 20 is in contact with the stop shoulder 41. When the rotation speed is continuously increased, the centrifugal motion of the spool 20 is blocked, at this time, the pressure of the spring 31 is no longer increased, thereby avoiding the excessive compression of the spring 31 and ensuring the service life of the spring 31.
[0064] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. An adaptive conduit for supplying oil to a rotating component, characterized in that, include: The shell has a hollow structure, with oil entering through the oil inlet channel and exiting through the oil outlet channel. The valve core is located between the oil inlet channel and the oil outlet channel; A control component, connected to the valve core, is used to control the position of the valve core in the housing according to the rotational speed of the rotating component, thereby controlling the amount of oil output in the oil outlet channel.
2. The adaptive catheter according to claim 1, characterized in that, Also includes: The first pipeline, wherein the valve core is located in the first pipeline, and the first pipeline connects the oil inlet channel and the oil outlet channel; wherein the oil inlet channel and the oil outlet channel both extend along the axial direction of the housing.
3. The adaptive catheter according to claim 2, characterized in that, The first conduit extends radially along the housing; or; The angle between the extension direction of the first pipeline and the axial direction of the housing is less than 90 degrees.
4. The adaptive catheter according to claim 2, characterized in that, Also includes: A plug is fitted onto the housing to seal the first pipeline.
5. The adaptive catheter according to claim 4, characterized in that, The control component includes: The spring is connected to the valve core at one end and to the plug at the other end. The greater the rotational speed of the rotating part, the greater the elastic force of the spring on the valve core, and the greater the amount of oil entering the oil outlet channel through the oil inlet channel.
6. The adaptive catheter according to claim 4, characterized in that, The plug also includes: A shoulder, the inner diameter of which is smaller than the outer diameter of the valve core, is provided to prevent the valve core from further compressing the control component.
7. The adaptive catheter according to claim 6, characterized in that, The plug also includes: The pressure relief port passes through the outer wall of the plug on the side opposite to the valve core.
8. The adaptive catheter according to claim 1, characterized in that, The cross-sectional width of the oil outlet channel gradually increases from the side closest to the oil inlet channel to the side furthest from the oil inlet channel.
9. The adaptive catheter according to claim 6, characterized in that, The oil outlet channel array is configured; The number of valve cores and the number of oil outlet channels are designed to be matched.
10. The adaptive catheter according to claim 1, characterized in that, Also includes: A sealing groove is located on the outside of the housing and is arranged along the circumference of the housing; A sealing ring is placed in the sealing groove.