Magnetic bearing with gas escape grooves

Abstract

The utility model discloses a dynamic pressure bearing with escape gas groove contains: bearing body, the axle hole is set up in the inside of bearing body, and is through the both ends of bearing body, at least one oil guide groove group, oil guide groove group sets up in the inner wall of axle hole, and oil guide groove group contains a plurality of oil guide grooves, escape gas section, escape gas section sets up in the outer wall of bearing body, and extends to the both ends of bearing body, escape gas groove, escape gas groove is set up on escape gas section, and extends to the both ends of bearing body. The utility model discloses through setting up the escape gas section of axial extension and the escape gas groove parallel to axle hole, forms the coordinated exhaust passage, can effectively separate the bubble in lubricating oil and accelerates to discharge, and the stability of gas-liquid two-phase flow is improved obviously, and this scheme has the processing simplicity and high reliability simultaneously, can prolong the service life of bearing and improves the comprehensive performance under the extreme working condition.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a hydrodynamic bearing with an air escape groove. Background Technology

[0002] As a core component of rotating machinery, the performance of hydrodynamic bearings directly affects the stability and lifespan of the equipment. Under high-speed, high-load conditions, traditional hydrodynamic bearings are prone to gas ingress into the lubricating oil, leading to problems such as reduced oil film load-bearing capacity, increased localized temperature rise, and abnormal vibration. While existing technologies improve lubrication and venting through grooved structures, there is still room for improvement in gas-liquid separation efficiency and structural reliability. Summary of the Invention

[0003] According to an embodiment of the present invention, a hydrodynamic bearing with an air escape groove is provided, comprising:

[0004] Bearing body;

[0005] The shaft hole is located inside the bearing body and extends through both ends of the bearing body;

[0006] At least one set of oil guide grooves is provided on the inner wall of the shaft hole, and the set of oil guide grooves includes multiple oil guide grooves.

[0007] The venting section is set on the outer wall of the bearing body and extends to both ends of the bearing body;

[0008] The venting groove is formed on the venting cut surface and extends to both ends of the bearing body.

[0009] Furthermore, the escape section is a rectangular plane.

[0010] Furthermore, the venting section extends axially along the bearing body and is parallel to the central axis of the shaft hole.

[0011] Furthermore, the escaping groove is parallel to the central axis of the rotating shaft hole.

[0012] Furthermore, the escape groove is located on the center line of the escape section.

[0013] Furthermore, the distance between the bottom of the escaping groove and the inner wall of the rotating shaft hole is not less than 0.2 mm.

[0014] Furthermore, the distance between the escaping section and the inner wall of the shaft hole is 1.05mm~2.8mm.

[0015] Furthermore, the depth of the escaping groove is 0.2mm~1mm.

[0016] According to the embodiments of the present invention, the hydrodynamic bearing with venting grooves forms a synergistic venting channel by setting an axially extending venting section and venting grooves parallel to the shaft hole, which can effectively separate air bubbles in the lubricating oil and accelerate their discharge, significantly improving the stability of gas-liquid two-phase flow. This solution combines ease of processing with high reliability, and can extend the service life of the bearing and improve the overall performance under extreme working conditions.

[0017] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a hydrodynamic bearing with an air escape groove according to an embodiment of the present invention.

[0019] Reference numerals: 1. Bearing body, 2. Shaft hole, 3. Oil guide groove, 4. Air escape section, 5. Air escape groove. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0021] First, combine Figure 1 The description of the dynamic pressure bearing with venting groove 5 according to an embodiment of the present invention is for venting of the dynamic pressure bearing and has a wide range of applications.

[0022] like Figure 1 As shown, the hydrodynamic bearing with venting groove 5 of this utility model embodiment includes: a bearing body 1; a shaft hole 2; at least one set of oil guide grooves 3; a venting cross-section 4 and a venting groove 5. In this embodiment, the bearing body 1 is a cylinder.

[0023] Specifically, such as Figure 1As shown, in this embodiment, the shaft hole 2 is located inside the bearing body 1 and extends through both ends of the bearing body 1, providing a shaft mounting reference surface to ensure the concentricity of the shaft and bearing, and allowing lubricating oil and gas to flow freely at both ends of the bearing; the oil guide groove 3 group is located on the inner wall of the shaft hole 2, and the oil guide groove 3 group includes multiple oil guide grooves 3. Multiple oil guide groove 3 groups can be set according to requirements. The oil guide grooves 3 are V-shaped, and multiple oil guide grooves 3 are equidistantly arranged. The oil guide grooves 3 guide the lubricating oil to form a continuous oil film, and use the dynamic pressure effect to generate oil film pressure to support the shaft; the venting section 4 is located on the outer wall of the bearing body 1 and extends to both ends of the bearing body 1 to guide the gas to escape; the venting groove 5 is opened on the venting section 4 and extends to both ends of the bearing body 1. The two-stage design of the section and the groove can effectively remove air bubbles in the lubricating oil and enhance the heat dissipation capacity. In this embodiment, the venting section 4 provides a stable guiding path for gas discharge, forming the main channel for gas flow. Combined with the venting groove 5, it guides the gas flow path. Utilizing the surface tension effect, the sharp angles of the venting groove 5 can more efficiently capture air bubbles in the oil. The venting section 4 can handle conventional venting needs, while the venting groove 5 is suitable for venting needs under high-speed and heavy-load conditions, demonstrating good applicability. Compared to directly creating deeper grooves, the venting section 4 and the venting groove 5 on the section ensure the structural rigidity of the bearing outer wall. By placing the venting groove 5 on the venting plane, it can be formed during the molding process of the bar stock, eliminating the need for subsequent processing and reducing production costs.

[0024] Furthermore, in this embodiment, the venting section 4 is a rectangular plane, which facilitates the fit between the bearing and the housing during bearing installation and provides a stable axially aligned channel for gas discharge.

[0025] Furthermore, in this embodiment, the venting section 4 extends axially along the bearing body 1 and is parallel to the central axis of the shaft hole 2, enabling rapid venting.

[0026] Furthermore, in this embodiment, the venting groove 5 is parallel to the central axis of the shaft hole 2 to achieve the shortest exhaust path. When the shaft rotates, the oil is carried along and rotates at high speed, and the air bubbles are thrown into the groove by centrifugal force. The straight groove achieves rapid exhaust and heat dissipation.

[0027] Furthermore, in this embodiment, the escaping groove 5 is opened on the center line of the escaping section 4. The center line is the area where the airflow is most concentrated, and the discharge speed is fast. The center setting makes the force on both sides uniform, avoiding bearing vibration caused by uneven exhaust, and the overall appearance is also more aesthetically pleasing.

[0028] Furthermore, in this embodiment, the distance between the bottom of the venting groove 5 and the inner wall of the shaft hole 2 is not less than 0.2mm to ensure sufficient strength and achieve better exhaust effect. The distance can be set to 0.2mm~1mm according to the bearing size.

[0029] Furthermore, in this embodiment, the distance between the venting section 4 and the inner wall of the shaft hole 2 is 1.05mm~2.8mm. The size of the distance is set according to the size of the bearing, which combines bearing strength and venting performance.

[0030] Furthermore, in this embodiment, the depth of the venting groove 5 is 0.2mm~1mm to achieve a better exhaust effect.

[0031] Working principle: The venting plane and venting groove 5 are recessed on the outer wall of the bearing body 1, and the venting groove 5 extends to both ends of the bearing body 1, so that the outer wall of the bearing body 1 can form an venting (exhaust) space. As a result, it can have a better venting (exhaust) effect, and when installed in a motor, it can facilitate the discharge of hot air, thereby effectively improving the performance of the motor.

[0032] Above, refer to Figure 1 This invention describes a hydrodynamic bearing with venting grooves according to an embodiment of the present invention. By setting an axially extending venting section and venting grooves parallel to the shaft hole, a synergistic venting channel is formed, which can effectively separate air bubbles in the lubricating oil and accelerate their discharge, significantly improving the stability of gas-liquid two-phase flow. This solution combines ease of processing with high reliability, and can extend the service life of the bearing and improve the overall performance under extreme working conditions.

[0033] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0034] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A hydrodynamic bearing with venting grooves, characterized in that, Include: Bearing body; A pivot hole is provided inside the bearing body and extends through both ends of the bearing body; At least one set of oil guide grooves is provided on the inner wall of the rotating shaft hole, and the set of oil guide grooves includes multiple oil guide grooves. An escaping section is provided on the outer wall of the bearing body and extends to both ends of the bearing body; The venting groove is formed on the venting cross-section and extends to both ends of the bearing body.

2. The hydrodynamic bearing with venting grooves as described in claim 1, characterized in that, The escape section is a rectangular plane.

3. The hydrodynamic bearing with venting grooves as described in claim 1, characterized in that, The venting section extends axially along the bearing body and is parallel to the central axis of the shaft hole.

4. The hydrodynamic bearing with venting grooves as described in claim 1, characterized in that, The escaping groove is parallel to the central axis of the rotating shaft hole.

5. The hydrodynamic bearing with venting grooves as described in claim 1, characterized in that, The escape groove is formed on the center line of the escape section.

6. The hydrodynamic bearing with venting grooves as described in claim 1, characterized in that, The distance between the bottom of the escaping groove and the inner wall of the rotating shaft hole is not less than 0.2 mm.

7. The hydrodynamic bearing with venting grooves as described in claim 1, characterized in that, The distance between the escaping section and the inner wall of the shaft hole is 1.05mm to 2.8mm.

8. The hydrodynamic bearing with venting grooves as described in claim 1, characterized in that, The depth of the escaping groove is 0.2mm to 1mm.

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