CN218954036U - Flow distribution valve suitable for electric drive assembly - Google Patents
Flow distribution valve suitable for electric drive assembly Download PDFInfo
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- CN218954036U CN218954036U CN202222835522.6U CN202222835522U CN218954036U CN 218954036 U CN218954036 U CN 218954036U CN 202222835522 U CN202222835522 U CN 202222835522U CN 218954036 U CN218954036 U CN 218954036U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model discloses a flow distribution valve suitable for an electric drive assembly, which comprises the following components: the valve comprises a valve body, a valve core, a spring, a nut gasket and a limit nut, wherein a reserved groove is formed in the valve body; the valve core is embedded in the reserved groove; the spring is positioned in the reserved groove and sleeved outside the valve core, the first end of the spring is connected with the valve core base positioned at the first end of the valve core, and the second end of the spring is connected with the bottom surface of the second groove in the reserved groove; and the limit nut and the nut gasket are arranged at the second end of the valve core. The flow distribution valve suitable for the electric drive assembly is a mechanical flow distribution valve, does not need signal control, has a simple structure and low cost, can be combined with the action of a throttling orifice, can ensure the minimum flow requirement, can ensure the maximum flow through the design of spring parameters, avoids redundant flow waste, and improves the lubrication efficiency.
Description
Technical Field
The utility model relates to a control device for controlling cooling and lubricating flow, in particular to a flow distribution valve suitable for an electric drive assembly.
Background
The cooling and lubricating flow required by actively cooling and lubricating key parts such as a motor stator, a motor rotor, a motor shaft, a motor gear, a motor bearing and the like of the electric drive assembly is self-adaptive to working conditions through a lubricating system. However, for the electric drive assembly, the lubrication system is an open loop system, and how to meet the different cooling and lubricating flow requirements of key parts according to the actual requirements of working conditions, so that the efficiency of the cooling and lubricating system is improved, and the design of the lubrication system of the electric drive assembly is a serious difficulty at present. Some electric drive assembly manufacturers borrow the valve plate of the traditional gearbox of maturity to add solenoid valve flow ration control scheme, can realize the operating mode adaptability of cooling lubrication flow demand through the proportional control of solenoid valve. Most electric drive assembly manufacturers adopt the choke to carry out flow distribution, and the choke is added at the front end of a cooling and lubricating object to realize flow control. The choke can only be designed according to the maximum flow demand, and different working conditions can not be considered, so that the design margin of the whole lubrication system is increased, excessive design occurs, the hydraulic power load of the lubrication system is increased, and the efficiency of the lubrication system is reduced. Meanwhile, the risks that the lubricating flow is insufficient, the flow required by the choke distribution is too large compared with the actual flow, the choke is blocked by impurities and the like are considered in view of the change of oil along with the temperature characteristic, and meanwhile, the choke is in a form of small holes machined by a shell, so that the manufacturing difficulty is high.
Disclosure of Invention
The present utility model aims to solve, at least to some extent, one of the technical problems in the above-described technology. Therefore, the present utility model provides a valve suitable for an electric drive assembly, and aims to provide a mechanical valve which does not need signal control and can be opened or closed according to the flow requirement of a system.
In order to achieve the above object, the present utility model provides a flow distribution valve suitable for an electric drive assembly, comprising: valve body, case, spring, nut gasket and stop nut, wherein:
a reserved groove is formed in the valve body;
the valve core is embedded in the reserved groove;
the spring is positioned in the reserved groove and sleeved outside the valve core, the first end of the spring is connected with the valve core base positioned at the first end of the valve core, and the second end of the spring is connected with the bottom surface of the second groove in the reserved groove;
and the limit nut and the nut gasket are arranged at the second end of the valve core.
Preferably, the valve core is composed of a valve core base, a valve core main shaft and a threaded port, wherein the valve core base and the threaded port are respectively positioned at two ends of the valve core main shaft.
Preferably, the valve core base is formed by a first cylinder, a first round table, a second round table and a second cylinder which are integrally formed, wherein the upper bottom surface of the first cylinder is connected with the lower bottom surface of the first round table; the upper bottom surface of the first round table is connected with the lower bottom surface of the second round table; the upper bottom surface of the second round table is connected with the lower bottom surface of the second cylinder;
the valve core main shaft is a cylinder;
the upper bottom surface of the second cylinder is connected with the first end of the valve core main shaft.
Preferably, the central axes of the first cylinder, the first round table, the second cylinder and the valve core main shaft are positioned on the same horizontal line; the radius of the upper bottom surface of the first cylinder is the same as that of the lower bottom surface of the first round table; the radius of the lower bottom surface of the first round table is larger than that of the upper bottom surface of the first round table; the radius of the upper bottom surface of the first round table is larger than that of the lower bottom surface of the second round table; the radius of the lower bottom surface of the second round table is larger than that of the upper bottom surface of the second round table; the radius of the upper bottom surface of the second round table is the same as the radius of the lower bottom surface of the second cylinder;
the radius of the upper bottom surface of the second cylinder is larger than the radius of the valve core main shaft.
Preferably, the reserved groove is composed of a first groove, a second groove, a third groove, a fourth groove, a fifth groove and a sixth groove, wherein,
the first groove, the second groove, the third groove and the fourth groove are sequentially connected;
the fifth groove is positioned between the second groove and the fourth groove, and is respectively connected with the second groove and the fourth groove; the first bottom surface of the fifth groove and the first bottom surface of the third groove are positioned on the same vertical plane, the second bottom surface of the fifth groove and the second bottom surface of the third groove are positioned on the same vertical plane, and the fifth groove and the third groove are not connected with each other;
the sixth groove is positioned on the clamping surface between the first bottom surface of the first groove and the side surface of the second groove.
Preferably, the first groove, the second groove, the third groove and the fourth groove are circular grooves, the fifth groove is formed by four identical fan ring grooves, the circle centers of the four fan ring grooves are identical, and the inner diameter and the outer diameter of the four fan ring grooves are identical;
the radius of the first groove is larger than that of the second groove;
the radius of the third groove is smaller than that of the second groove;
the radius of the fourth groove is larger than that of the first groove;
the inner diameter of the fan ring groove is larger than the radius of the third groove, the inner diameter of the fan ring groove is smaller than the radius of the second groove, the outer diameter of the fan ring groove is larger than the radius of the second groove, and the outer diameter of the fan ring groove is smaller than the radius of the fourth groove.
Preferably, the connection part between the second bottom surface and the side surface of the first groove is a smooth cambered surface, and the connection part between the first bottom surface and the side surface of the fourth groove is a smooth cambered surface.
Preferably, the valve body is a hollow cylinder, and the joint of the outer side surface and the bottom surface of the valve body is a smooth cambered surface.
Preferably, the radius of the bottom surface of the second round table in the valve core is smaller than the radius of the second groove; the diameter of a first cylinder in the valve core is larger than that of the second groove, and the diameter of the first cylinder is smaller than the sum of the diameter of the second groove and the vertical height of the sixth reserved groove.
Preferably, the inner wall of the first groove in the valve body is further provided with three limiting blocks with the same shape and size, the three limiting blocks are of a plane symmetrical structure, three symmetrical planes corresponding to the three limiting blocks intersect at the horizontal central axis of the first groove, and the included angle between any two of the three symmetrical planes is 120 degrees.
Compared with the prior art, the utility model has the beneficial effects that:
1. the flow distribution valve suitable for the electric drive assembly is a mechanical flow distribution valve, does not need signal control, and has simple structure and low cost.
2. The flow distribution valve suitable for the electric drive assembly can be combined with the throttling function, can ensure the minimum flow requirement, and can ensure the maximum flow through the design of spring parameters.
3. The flow distribution valve suitable for the electric drive assembly can be opened and closed according to the flow demand of the system, so that redundant flow waste is avoided, and the lubrication efficiency is improved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a block diagram of a flow distribution valve according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a valve cartridge according to an embodiment of the present utility model;
FIG. 3 is a block diagram of a valve body according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of another direction of the valve body according to an embodiment of the present utility model;
FIG. 5 is a diagram showing the internal structure of a flow distribution valve in a left position state according to the embodiment of the present utility model;
FIG. 6 is a diagram showing the internal structure of a flow distribution valve in a right position state according to the embodiment of the present utility model;
fig. 7 is a left side view of the flow distribution valve with the limiting block according to the embodiment of the utility model.
Reference numerals: 1. valve body, 11, first recess, 12, second recess, 13, third recess, 14, fourth recess, 15, fifth recess, 16, sixth recess, 17, stopper, 2, case, 21, case base, 211, first cylinder, 212, first round platform, 213, second round platform, 214, second cylinder, 22, case main shaft, 23, threaded port, 3, spring, 4, nut gasket, 5, stop nut.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
As shown in fig. 1, the present utility model provides a flow distribution valve suitable for an electric drive assembly, comprising: valve body 1, case 2, spring 3, nut gasket 4 and spacing nut 5, wherein:
a reserved groove is formed in the valve body 1;
the valve core 2 is embedded in the reserved groove;
the spring 3 is located inside the reserved groove and sleeved outside the valve core 2, a first end of the spring 3 is connected with a valve core base 21 located at the first end of the valve core 2, and a second end of the spring 3 is connected with the bottom surface of a second groove 12 in the reserved groove;
the limit nut 5 and the nut gasket 4 are mounted at the second end of the valve core 2.
The valve core 2 has a structure as shown in fig. 2, and includes: a spool base 21, a spool spindle 22, and a threaded port 23. In some embodiments of the present utility model, the valve core base 21 is formed by sequentially connecting a first cylinder 211, a first round table 212, a second round table 213 and a second cylinder 214, and the inclined surface of the round table can effectively avoid local pressure loss caused by corner collision with the valve core base 21 when the lubricating liquid passes through. In other embodiments of the present utility model, the valve core base 21 is formed by splicing two cylinders, and the corners of the included angle between the bottom surface and the side surface of the cylinder are rounded, which can also reduce the local pressure loss. In some embodiments of the utility model, the valve core 2 is integrally formed, improving the life; fig. 3 and 4 are cross-sectional views of the valve body 1 in two different directions (front and oblique) in the embodiment of the present utility model. Fig. 3 and 4 show that the valve body 1 is provided with a first groove 11, a second groove 12, a third groove 13, a fourth groove 14, a fifth groove 15 and a sixth groove 16 in addition to the body of the valve body 1 (the fifth groove 15 is not directly exposed to the cross section of fig. 3, so the fifth groove 15 is indicated by a broken line in fig. 3, and the fifth groove 15 is exposed to the cross section in fig. 4). The fifth groove 15 is an oil outlet, and the sixth groove 16 is a choke when the valve is in a right position (see below for a right position).
In the embodiment of the present utility model, the working state of the distributing valve is shown in fig. 5 and 6. Fig. 5 is a schematic diagram of a left position of the distributing valve, fig. 6 is a schematic diagram of a right position of the distributing valve, and arrows in the two figures are liquid flowing through the distributing valve. As shown in fig. 5, when the hydraulic pressure in the first groove 11 on the left side of the inside of the distributing valve is smaller than the elastic force of the spring 3, the valve core 2 is positioned on the left side of the groove inside the valve body 1, the distributing valve is positioned in a left position state, a larger gap exists between the valve core 2 and the side edge of the reserved groove inside the valve body 1, and the lubricating liquid flowing through the distributing valve enters the second groove 12 inside the valve body 1 from the gap and flows out through the third groove 13 and the fifth groove 15 connected with the second groove 12 and enters the fourth groove 14 to lubricate the lubricating object on the right side of the fourth groove 14. It should be noted that, in some embodiments of the present utility model, a gap is formed between the central axis of the valve core 2 and the third groove 13, and the gap is 0.3mm, and the existence of the gap enables the valve core main shaft 22 to slide, and also enables the lubrication fluid to flow through the contact surface between the valve core main shaft 22 and the inner wall of the third groove 13, so as to ensure lubrication of the valve core main shaft 22; fig. 6 is a schematic diagram of the right state of the distributing valve, when the pressure of the lubrication fluid at the inlet of the left end of the distributing valve increases, the valve core 2 is pushed, the spring 3 is compressed, and the right side of the valve core base 21 of the left end of the valve core 2 contacts with the bottom walls of the first groove 11 and the second groove 12. Since the diameter of the spool base 21 is larger than the diameter of the second groove 12 and smaller than the sum of the diameter of the second groove 12 and the height of the sixth groove 16, when the spool base 21 is in contact with the second groove 12, there is only the passage of the sixth groove 16 between the first groove 11 and the second groove 12, and in this state, only a small amount of lubricating fluid can enter the second groove 12 from the first groove 11 through the sixth groove 16, and further enter the fourth groove 14 through the third groove 13 and the fifth groove 15, thereby lubricating the predetermined lubricating object. Therefore, the mechanical flow distribution valve provided by the utility model has a simple structure and low cost, can ensure the minimum flow requirement due to the existence of the throttling port (the sixth groove 16), can ensure the maximum flow through the parameter design of the spring 3, can be opened and closed according to the flow requirement of the system, avoids redundant flow waste and improves the lubrication efficiency.
In some embodiments of the present utility model, the outer side or the inner side of the valve body 1 may be further provided with a stopper 17, as shown in fig. 7, the present utility model provides a left side view of a flow distribution valve with a stopper, in which three stopper 17 having the same size and the same shape are equiangularly distributed on the inner wall of the first groove 11. For the thicker valve body 1, the valve body 1 body can be processed, the side wall of the valve body 1 is reduced, a limiting block is constructed at the same time, the weight of the flow distribution valve body is reduced, and meanwhile, the flow distribution valve can be better connected with external equipment.
It should be noted that, the terms of "upper", "lower", "left", "right", and the like in the present utility model or the terms of "within … …", "between … …" that can express the positional relationship are merely for more clearly explaining the technical solutions provided by the present utility model, and should not be construed as limiting the technical solutions provided by the present utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A flow distribution valve suitable for an electrically driven assembly, comprising: valve body, case, spring, nut gasket and stop nut, wherein:
a reserved groove is formed in the valve body;
the valve core is embedded in the reserved groove;
the spring is positioned in the reserved groove and sleeved outside the valve core, the first end of the spring is connected with the valve core base positioned at the first end of the valve core, and the second end of the spring is connected with the bottom surface of the second groove in the reserved groove;
and the limit nut and the nut gasket are arranged at the second end of the valve core.
2. The valve of claim 1, wherein the valve core comprises a valve core base, a valve core spindle and a threaded port, the valve core base and the threaded port being located at two ends of the valve core spindle, respectively.
3. The valve of claim 2, wherein the valve core base is formed by a first cylinder, a first round table, a second round table and a second cylinder which are integrally formed, wherein the upper bottom surface of the first cylinder is connected with the lower bottom surface of the first round table; the upper bottom surface of the first round table is connected with the lower bottom surface of the second round table; the upper bottom surface of the second round table is connected with the lower bottom surface of the second cylinder;
the valve core main shaft is a cylinder;
the upper bottom surface of the second cylinder is connected with the first end of the valve core main shaft.
4. A valve as claimed in claim 3, wherein the central axes of the first cylinder, the first round table, the second cylinder and the main shaft of the valve core are positioned on the same horizontal line; the radius of the upper bottom surface of the first cylinder is the same as that of the lower bottom surface of the first round table; the radius of the lower bottom surface of the first round table is larger than that of the upper bottom surface of the first round table; the radius of the upper bottom surface of the first round table is larger than that of the lower bottom surface of the second round table; the radius of the lower bottom surface of the second round table is larger than that of the upper bottom surface of the second round table; the radius of the upper bottom surface of the second round table is the same as the radius of the lower bottom surface of the second cylinder;
the radius of the upper bottom surface of the second cylinder is larger than the radius of the valve core main shaft.
5. The valve of claim 1, wherein the preformed groove comprises a first groove, a second groove, a third groove, a fourth groove, a fifth groove, and a sixth groove, wherein,
the first groove, the second groove, the third groove and the fourth groove are sequentially connected;
the fifth groove is positioned between the second groove and the fourth groove, and is respectively connected with the second groove and the fourth groove; the first bottom surface of the fifth groove and the first bottom surface of the third groove are positioned on the same vertical plane, the second bottom surface of the fifth groove and the second bottom surface of the third groove are positioned on the same vertical plane, and the fifth groove and the third groove are not connected with each other;
the sixth groove is positioned on the clamping surface between the first bottom surface of the first groove and the side surface of the second groove.
6. The valve of claim 5, wherein the first groove, the second groove, the third groove and the fourth groove are circular grooves, the fifth groove is formed by four identical fan ring grooves, the circle centers of the four fan ring grooves are identical, and the inner diameter and the outer diameter of the four fan ring grooves are identical;
the radius of the first groove is larger than that of the second groove;
the radius of the third groove is smaller than that of the second groove;
the radius of the fourth groove is larger than that of the first groove;
the inner diameter of the fan ring groove is larger than the radius of the third groove, the inner diameter of the fan ring groove is smaller than the radius of the second groove, the outer diameter of the fan ring groove is larger than the radius of the second groove, and the outer diameter of the fan ring groove is smaller than the radius of the fourth groove.
7. The valve of claim 6, wherein the junction between the second bottom surface and the side surface of the first groove is a smooth arc surface, and the junction between the first bottom surface and the side surface of the fourth groove is a smooth arc surface.
8. The valve of claim 1, wherein the valve body is a hollow cylinder and the junction of the outer side and the bottom surface of the valve body is a smooth arc surface.
9. The valve of any one of claims 2-8, wherein the radius of the bottom surface of the second land in the valve core is less than the radius of the second groove; the diameter of a first cylinder in the valve core is larger than that of the second groove, and the diameter of the first cylinder is smaller than the sum of the diameter of the second groove and the vertical height of the sixth reserved groove.
10. The valve of claim 9, wherein three limiting blocks with the same shape and size are further arranged on the inner wall of the first groove in the valve body, the three limiting blocks are of a plane symmetrical structure, three symmetrical planes corresponding to the three limiting blocks intersect at the horizontal central axis of the first groove, and an included angle between any two symmetrical planes of the three symmetrical planes is 120 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222835522.6U CN218954036U (en) | 2022-10-26 | 2022-10-26 | Flow distribution valve suitable for electric drive assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222835522.6U CN218954036U (en) | 2022-10-26 | 2022-10-26 | Flow distribution valve suitable for electric drive assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218954036U true CN218954036U (en) | 2023-05-02 |
Family
ID=86136037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222835522.6U Active CN218954036U (en) | 2022-10-26 | 2022-10-26 | Flow distribution valve suitable for electric drive assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218954036U (en) |
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2022
- 2022-10-26 CN CN202222835522.6U patent/CN218954036U/en active Active
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