Compressor

Abstract

The compressor comprises a main shaft and a sealing tooth cover, and a first oil seal part is arranged on the main shaft; the sealing tooth cover is located between the oil cavity and the motor cavity, a second oil seal part is arranged on the sealing tooth cover, and when the sealing tooth cover is arranged on the main shaft in a sleeving mode, the first oil seal part and the second oil seal part are matched to seal the oil cavity. According to the compressor provided by the invention, the first oil seal part is arranged on the main shaft, and the second oil seal part is arranged on the shaft sleeve, so that the first oil seal part and the second oil seal part are matched and seal the oil cavity at the same time, and compared with a single sealing structure, the compressor provided by the invention is better in sealing effect; larger pressure difference between the oil cavity and the motor cavity can be borne, and the risk of oil leakage can be reduced.

Description

Technical Field

[0001] This application relates to the field of heat exchange equipment technology, and more specifically, to a compressor. Background Technology

[0002] Centrifugal compressors need to operate at different cooling or heating temperatures. Temperature changes in the evaporator or condenser, as well as during shutdown or surge, can cause the oil chamber pressure to rise and the motor chamber pressure to drop, creating a pressure difference between the oil chamber and the motor chamber. This poses a risk of lubricating oil leakage into the motor chamber. Oil seal devices in related technologies typically use a single structure for sealing. This type of structure has poor sealing performance and can only withstand a small pressure difference between the oil chamber and the motor chamber, meaning that oil leakage remains even under low pressure ratio conditions. Summary of the Invention

[0003] This application provides a compressor to solve at least one of the above-mentioned technical problems.

[0004] The compressor according to the embodiments of this application includes:

[0005] The main shaft is provided with a first oil seal.

[0006] A sealing tooth cover is located between the oil chamber and the motor chamber. The sealing tooth cover is provided with a second oil seal. When the sealing tooth cover is sleeved on the main shaft, the first oil seal and the second oil seal cooperate to seal the oil chamber.

[0007] The compressor provided in this application has a better sealing effect by setting a first oil seal on the main shaft and a second oil seal on the bushing, so that the first oil seal and the second oil seal cooperate to seal the oil chamber at the same time. Compared with a single sealing structure, the compressor provided in this application has a better sealing effect, which is conducive to withstanding a larger pressure difference between the oil chamber and the motor chamber and helps to reduce the risk of oil leakage.

[0008] In some embodiments, the first oil seal includes an oil slinger ring, which is sleeved on the main shaft and at least partially extends into the oil cavity.

[0009] In this way, the oil slinger ring can deliver lubricating oil to critical parts, while also preventing excess lubricating oil from seeping into the motor cavity along the spindle.

[0010] In some embodiments, the oil slinger ring includes a first oil slinger ring and a second oil slinger ring, which are spaced apart on the main shaft.

[0011] Therefore, setting two oil-slinging rings helps to improve the delivery efficiency of lubricating oil and further prevents excess lubricating oil from seeping into the motor cavity along the main shaft.

[0012] In some embodiments, the outer diameter of the first oil slinger ring is larger than the outer diameter of the second oil slinger ring, and the first oil slinger ring is located on the side of the second oil slinger ring away from the motor cavity.

[0013] Thus, the size of the first oil slinger ring is slightly larger than that of the second oil slinger ring, which optimizes the internal structural layout of the compressor while meeting lubrication requirements and sealing effects.

[0014] In some embodiments, the first oil seal portion includes a sealing thread portion, the outer surface of which is provided with a sealing thread, the direction of rotation of which is opposite to the rotation direction of the spindle.

[0015] In this way, when the spindle rotates, the sealing thread can push the lubricating oil on the spindle into the oil chamber, preventing the lubricating oil from entering the motor chamber.

[0016] In some embodiments, the sealing thread is a rectangular thread.

[0017] Thus, the cross-sectional shape of the rectangular thread helps to confine the liquid within the groove, ensuring that the lubricating oil is effectively propelled during pumping.

[0018] In some embodiments, the first oil seal includes an oil slinger ring and a sealing thread portion, both of which are sleeved on the main shaft, with the oil slinger ring located on the side of the sealing thread portion away from the motor cavity.

[0019] Thus, the first oil seal includes parallel oil slinger rings and sealing threaded parts, which helps to further improve the sealing effect of the first oil seal and prevent lubricating oil from entering the motor cavity.

[0020] In some embodiments, the first oil seal and the main shaft are integrally machined into a single structure.

[0021] This helps reduce the difficulty of machining and assembling the first oil seal and the main shaft.

[0022] In some embodiments, the second oil seal is a sealing tooth pattern, which is disposed on the surface of the sealing tooth cover near the spindle.

[0023] In this way, the sealing teeth help reduce the flow rate of lubricating oil, thereby preventing lubricating oil from flowing into the motor cavity.

[0024] In some embodiments, the compressor further includes an oil baffle plate, the oil baffle plate being annular and arranged around the main shaft to partially isolate the oil chamber.

[0025] In this way, the oil baffle can separate the oil mist, which helps to block the lubricating oil droplets in the lubricating oil mist.

[0026] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0028] Figure 1 This is a schematic diagram of the internal structure of the compressor according to an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the main shaft of the compressor according to an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the internal structure of the compressor according to an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the sealing tooth cover of the compressor according to an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the oil baffle of the compressor according to an embodiment of this application.

[0033] Explanation of main component symbols: Compressor 100, main shaft 10, first oil seal 11, oil slinger ring 111, first oil slinger ring 1111, second oil slinger ring 1112, sealing thread 112, first section 12, second section 13, sealing tooth cover 20, second oil seal 21, sealing tooth 211, oil chamber 30, motor chamber 40, mounting base 50, bearing housing 60, bearing 70, oil baffle plate 80, oil baffle ring 81, mounting ring 82. Detailed Implementation

[0034] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] This disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] Please see Figure 1 This application provides a compressor 100, including a main shaft 10 and a sealing tooth cover 20. The main shaft 10 is provided with a first oil seal 11. The sealing tooth cover 20 is located between the oil chamber 30 and the motor chamber 40. The sealing tooth cover 20 is provided with a second oil seal 21. When the sealing tooth cover 20 is sleeved on the main shaft 10, the first oil seal 11 and the second oil seal 21 cooperate to seal the oil chamber 30.

[0039] The compressor 100 provided in this application has a better sealing effect by providing a first oil seal 11 on the main shaft 10 and a second oil seal 21 on the bushing. The first oil seal 11 and the second oil seal 21 cooperate to seal the oil chamber 30 at the same time. Compared with a single sealing structure, the compressor 100 provided in this application has a better sealing effect, which is conducive to withstanding a larger pressure difference between the oil chamber 30 and the motor chamber 40, and helps to reduce the risk of oil leakage.

[0040] Specifically, the cooperation of the first oil seal 11 and the second oil seal 21 ensures that the lubricating oil in the oil chamber 30 will not leak into the motor chamber 40 or other areas, thereby guaranteeing the normal operation and lubrication effect of the compressor 100. On the other hand, good sealing performance can reduce energy loss and improve the operating efficiency of the compressor 100.

[0041] In the embodiments of this application, please refer to Figure 1 and Figure 2The main shaft 10 includes a first section 12 and a second section 13 connected together, wherein the diameter of the second section 13 is smaller than the diameter of the first section 12. Furthermore, the compressor 100 also includes a mounting base 50, a bearing housing 60, and a bearing 70. The bearing housing 60 is installed in the middle of the mounting base 50, and the bearing 70 is installed inside the bearing housing 60. The second section 13 of the main shaft 10 is inserted into the bearing 70 and rotatably connected to the bearing housing 60 through the bearing 70. The bearing 70 is installed on the main shaft 10 by an interference fit, and there is a clearance fit between the outer ring of the bearing 70 and the bearing housing 60. One end of the sealing tooth cover 20 is sleeved on the first section 12 of the main shaft 10, and the other end is detachably connected to the mounting base 50, so that the mounting base 50, the bearing housing 60, and the sealing tooth cover 20 enclose an oil cavity 30, and the other side of the sealing tooth cover 20 is a motor cavity 40.

[0042] The first oil seal 11 is provided on the first section 12 of the main shaft 10, and the sealing tooth cover 20 is provided with the second oil seal 21. The shape and size of the sealing tooth cover 20 must match the main shaft 10 to ensure a tight fit when it is sleeved on the main shaft 10.

[0043] Please see Figures 1 to 3 In some embodiments, the first oil seal 11 includes an oil slinger ring 111, which is sleeved on the main shaft 10 and extends at least partially into the oil chamber 30.

[0044] In this way, the oil slinger ring 111 can throw the lubricating oil to the key parts, while also preventing excess lubricating oil from seeping into the motor cavity 40 along the main shaft 10.

[0045] Specifically, the oil slinger ring 111 is an important sealing component in mechanical equipment, mainly used to ensure the lubrication of the bearing 70 and prevent lubricating oil leakage. The oil slinger ring 111 is sleeved on the main shaft 10, with its lower part extending into the oil cavity 30 and immersed in the lubricating oil. The main shaft 10 drives the oil ring to rotate, and the oil ring carries oil up to lubricate the bearing 70. At the same time, some lubricating oil is also thrown out by the oil slinger ring 111 as it moves along the main shaft 10 towards the motor cavity 40, thereby preventing lubricating oil from entering the motor cavity 40.

[0046] In this embodiment, the oil slinger ring 111 is tightly fitted onto the first section 12 of the main shaft 10 and located near the edge of the second section 13. The oil slinger ring 111 extends at least partially into the oil chamber 30, thus effectively preventing lubricating oil from leaking from the oil chamber 30 into the motor chamber 40 or other areas, ensuring the normal operation of the compressor 100. Furthermore, the oil slinger ring 111 has a relatively simple structure but can adapt to the sealing requirements under different operating conditions, such as harsh environments with high speed, high pressure, and high temperature.

[0047] In some embodiments, the oil slinger ring 111 can be detachably mounted on the main shaft 10, so that the replacement and maintenance of the oil slinger ring 111 is relatively simple, reducing the maintenance cost of the compressor 100.

[0048] It is important to note that during the installation of the oil slinger ring 111, it is necessary to ensure the installation accuracy requirements such as coaxiality and perpendicularity between the oil slinger ring 111 and the spindle 10.

[0049] Optionally, the oil slinger ring 111 can be O-shaped, U-shaped, V-shaped, or L-shaped. These different shaped oil slinger rings 111 have slightly different functions, but the basic principle is to use radial pressure difference and centrifugal force to prevent lubricating oil leakage and ensure the lubrication of bearing 70.

[0050] In some embodiments, the oil slinger ring 111 includes a first oil slinger ring 1111 and a second oil slinger ring 1112, which are spaced apart on the main shaft 10.

[0051] Thus, setting two oil-slinging rings 111 helps to improve the delivery efficiency of lubricating oil and further prevents excess lubricating oil from seeping into the motor cavity 40 along the main shaft 10.

[0052] For details, please refer to Figures 1 to 3 In this embodiment, the spacing between the first oil slinger ring 1111 and the second oil slinger ring 1112 provides a double seal for the oil chamber 30, effectively reducing the risk of lubricating oil leakage. The spacing between the first oil slinger ring 1111 and the second oil slinger ring 1112 ensures that more lubricating oil is evenly distributed to the surface of the bearing 70, thereby improving lubrication efficiency. Good lubrication and sealing effects help reduce wear on the bearing 70 and other moving parts, thus extending the overall lifespan of the equipment.

[0053] In this embodiment, the first oil slinger ring 1111 and the second oil slinger ring 1112 are disposed at a certain distance on the spindle 10 to ensure that they can cover different lubrication areas respectively. At the same time, the position of the oil slinger ring 111 should be close to the end of the first section 12 of the spindle 10 near the second section 13, so as to be close to the bearing 70 part that needs to be lubricated.

[0054] In some embodiments, the outer diameter of the first oil slinger ring 1111 is larger than the outer diameter of the second oil slinger ring 1112, and the first oil slinger ring 1111 is located on the side of the second oil slinger ring 1112 away from the motor cavity 40.

[0055] Thus, the size of the first oil slinger ring 1111 is slightly larger than that of the second oil slinger ring 1112, which allows for an optimized internal structural layout of the compressor 100 that meets lubrication requirements and sealing performance.

[0056] Specifically, the outer diameter of the first oil slinger ring 1111 is larger than that of the second oil slinger ring 1112, which can form a tighter sealing structure, effectively preventing lubricating oil in the oil cavity 30 from leaking into the motor cavity 40 or other areas, thereby maintaining the stable operation of the compressor 100. Furthermore, since the first oil slinger ring 1111 is located on the side of the second oil slinger ring 1112 away from the motor cavity 40 and has a larger outer diameter, it can better throw the lubricating oil in the oil cavity 30 back into the oil cavity 30, reducing lubricating oil waste and contamination.

[0057] Please see Figure 1 and Figure 2 In some embodiments, the first oil seal portion 11 includes a sealing thread portion 112, the outer surface of which is provided with a sealing thread, the direction of rotation of the sealing thread being opposite to the rotation direction of the spindle 10.

[0058] In this way, when the spindle 10 rotates, the sealing thread can push the lubricating oil on the spindle 10 toward the oil chamber 30, preventing the lubricating oil from entering the motor chamber 40.

[0059] Specifically, the outer surface of the sealing thread portion 112 is provided with a sealing thread opposite to the rotation direction of the main shaft 10, so as to effectively prevent oil leakage through the thread gap when the main shaft 10 rotates, thereby enhancing the sealing performance of the oil cavity 30. The sealing thread portion 112 should be set at a suitable position on the main shaft 10 adjacent to the oil cavity 30 to ensure that it fits tightly with the second oil seal portion 21 to form an effective seal.

[0060] Furthermore, the pitch, thread angle, and other parameters of the sealing thread should be reasonably selected based on the spindle speed, oil pressure, and other operating conditions of the spindle 10 to ensure the sealing effect. Depending on actual needs, special thread shapes (such as trapezoidal threads, sawtooth threads, etc.) can be considered to enhance the sealing effect.

[0061] Please see Figure 2 In some embodiments, the sealing thread is a rectangular thread.

[0062] Thus, the cross-sectional shape of the rectangular thread helps to confine the liquid within the groove, ensuring that the lubricating oil is effectively propelled during pumping.

[0063] Specifically, the rectangular thread design provides excellent sealing performance, effectively preventing oil leakage and ensuring the normal operation of the compressor 100. Simultaneously, the rectangular thread has a larger contact area and lower friction, resulting in less wear and a relatively longer service life. This is crucial for the compressor 100, which requires long-term stable operation.

[0064] Furthermore, parameters such as the height, pitch, and thread angle of the sealing thread should be reasonably selected based on the specific operating conditions of the compressor 100. For example, the height of the sealing thread should be in appropriate proportion to the diameter of the sealing thread, the pitch should be selected based on the transmitted torque and the required sealing performance, and the thread angle should be determined based on the thread's usage and requirements.

[0065] Furthermore, by adjusting parameters such as cutting speed, feed rate, and depth of cut in the machining of sealing threads, the machining accuracy and surface quality of the sealing threads can be improved, thereby reducing side clearance and improving sealing performance.

[0066] In other embodiments, the sealing thread may optionally be a triangular thread, a trapezoidal thread, etc., which can be selected according to actual needs, and will not be elaborated on here.

[0067] In some embodiments, the first oil seal portion 11 includes an oil slinger ring 111 and a sealing thread portion 112, both of which are sleeved on the main shaft 10, with the oil slinger ring 111 located on the side of the sealing thread portion 112 away from the motor cavity 40.

[0068] Thus, the first oil seal 11 includes parallel oil slinger rings 111 and sealing threaded portions 112, which helps to further improve the sealing effect of the first oil seal 11 and prevent lubricating oil from entering the motor cavity 40.

[0069] Specifically, in this embodiment, the spindle 10 is provided with both an oil slinger ring 111 and a sealing thread 112. The oil slinger ring 111 and the sealing thread 112 together form a double sealing structure, which can more effectively prevent lubricating oil leakage and improve the sealing performance of the equipment.

[0070] In this embodiment, the oil slinger ring 111 can evenly deliver lubricating oil to the surface of the bearing 70, while the sealing thread can prevent lubricating oil from leaking in the thread gap, thereby ensuring that the bearing 70 is adequately lubricated.

[0071] The oil slinger ring 111 should be positioned near the bearing 70 section requiring lubrication and fit tightly against the spindle 10, rotating synchronously with it. The sealing thread should be positioned appropriately on the spindle 10 to effectively prevent lubricant leakage. Typically, the sealing thread should be positioned upstream or downstream of the oil slinger ring 111 to form a complete sealing system.

[0072] In some embodiments, the first oil seal 11 and the main shaft 10 are integrally machined into a single structure.

[0073] This helps to reduce the difficulty of machining and assembling the first oil seal part 11 and the main shaft 10.

[0074] Specifically, in this embodiment, the main shaft 10, the oil slinger ring 111, and the sealing thread portion 112 are integrally machined into a single structure. This integral structure reduces the number of connection points between components, thereby improving the overall structural strength and reducing the risk of failure due to loose or broken connections. Furthermore, the integral nature of the oil slinger ring 111 and the sealing thread portion 112 with the main shaft 10 better ensures the fitting accuracy of the sealing surfaces, reduces the possibility of leakage, and improves the sealing performance of the compressor 100.

[0075] On the other hand, the integrated structure reduces assembly steps and the number of required parts, thereby simplifying the assembly process and improving production efficiency. Furthermore, by reducing connecting parts, the integrated structure lowers maintenance costs caused by damage or loosening of these parts.

[0076] It is important to note that the integrated structure requires high machining precision, necessitating accurate machining and fitting of the spindle 10, oil slinger ring 111, and sealing threads. Furthermore, materials with high strength, wear resistance, and corrosion resistance should be selected to suit the operating environment of the compressor 100.

[0077] In some embodiments, a split structure can also be adopted, with the oil slinger ring 111 and the sealing thread portion 112 installed as independent components on the spindle 10. This approach may be more flexible in terms of machining and assembly, but attention needs to be paid to the reliability and sealing performance of the connecting components.

[0078] Please see Figure 1 and Figure 4 In some embodiments, the second oil seal 21 is a sealing tooth pattern 211, which is provided on the surface of the sealing tooth cover 20 near the main shaft 10.

[0079] Thus, the sealing teeth 211 help reduce the flow rate of lubricating oil, thereby preventing lubricating oil from flowing into the motor cavity 40.

[0080] Specifically, in this embodiment, the design of the sealing teeth 211 increases the sealing area and the number of sealing points, thereby effectively improving the sealing effect and reducing oil leakage in the oil cavity 30.

[0081] In this embodiment, the sealing teeth 211 can be directly formed on the sealing tooth cover 20 by machining or casting, thereby simplifying the manufacturing process. In other embodiments, the sealing teeth 211 and the sealing tooth cover 20 can be separately provided, which can make processing and assembly more flexible, but attention should be paid to the reliability and sealing performance of the connecting parts.

[0082] The shape of the sealing teeth 211 should be designed according to the shape and size of the spindle 10 to ensure tight and uniform contact with the spindle 10.

[0083] Furthermore, by optimizing the shape of the sealing teeth 211, such as increasing the tooth height and decreasing the tooth pitch, the sealing effect can be further improved.

[0084] In this embodiment, the sealing teeth 211 should be made of special materials with higher wear resistance, corrosion resistance and high temperature resistance to extend its service life.

[0085] It is important to note that the machining accuracy of the sealing teeth 211 has a significant impact on the sealing effect, and the dimensional and shape accuracy during the machining process should be strictly controlled. Furthermore, the wear condition of the sealing teeth 211 should be checked regularly, and severely worn sealing teeth 211 should be replaced promptly to ensure the normal operation of the compressor 100.

[0086] In addition, during installation, excessive assembly force should be avoided on the sealing teeth 211 to prevent damage to the sealing structure or deformation of the spindle 10.

[0087] In this embodiment, the sealing teeth 211 are selected as labyrinth seals, also known as comb seals. The sealing teeth 211 of a labyrinth seal are typically comb-shaped, consisting of a series of parallel sealing teeth and grooves. Parameters such as the spacing, depth, and shape of the sealing teeth and grooves all affect its sealing performance.

[0088] Labyrinth seals are widely used in shaft seals and interstage seals for high-speed fluid machinery such as centrifugal compressors. They are simple in structure, easy to manufacture, and low in cost; they can withstand high pressure and temperature; and they are suitable for applications where a small amount of process gas leaks into the atmosphere without hazard, such as air compressors and nitrogen compressors.

[0089] In some embodiments, the type of sealing teeth 211 can also be a stepped seal. The stepped seal's sealing teeth 211 consist of a series of steps of varying heights, each step forming a sealing surface. The stepped seal has a compact structure, effectively reducing leakage; simultaneously, it also exhibits good stability and durability. It is suitable for applications requiring high sealing performance but with limited space.

[0090] In some embodiments, the sealing teeth 211 can also be selected as a smooth seal. The smooth seal has relatively smooth sealing teeth 211 without obvious protrusions or depressions. Smooth seals are suitable for applications where sealing requirements are not particularly stringent, or as an auxiliary sealing method combined with other sealing methods. They are simple to manufacture and have low cost; however, their sealing effect may not be as good as other methods.

[0091] Please see Figure 1 and Figure 5In some embodiments, the compressor 100 further includes an oil baffle 80, which is annular and arranged around the main shaft 10 to partially isolate the oil chamber 30.

[0092] In this way, the oil baffle 80 can play the role of oil mist separation, which helps to block the lubricating oil droplets in the lubricating oil mist.

[0093] Specifically, in this embodiment of the application, the lubricating oil enters the oil cavity in the form of a spray. In order to reduce the impact of oil mist generated by the spray lubrication, an oil baffle plate 80 is installed inside the bearing 70. The oil baffle plate 80 is fixed to the bearing seat 60 by fixing bolts, so that when the lubricating oil mist passes through the oil baffle plate 80, most of the lubricating oil droplets in the lubricating oil mist are blocked by the oil baffle plate 80.

[0094] The oil baffle 80 includes a connected oil baffle ring 81 and a mounting ring 82. The oil baffle ring 81 is cylindrical, and its inner diameter is slightly larger than the outer diameter of the first section 12 of the main shaft 10. The oil baffle ring 81 extends along the axial direction of the main shaft 10. The mounting ring 82 is annular. The oil baffle ring 81 is installed on the inner edge of the mounting ring 82 and is perpendicular to the mounting ring 82. The oil baffle ring 81 is installed on the bearing seat 60 through the mounting ring 82. A gap is formed between the end face of the oil baffle ring 81 away from the mounting ring 82 and the end face of the first section 12 of the main shaft 10 near the second section 13, so that the oil baffle ring 81 is blocked between the oil cavity 30 and the second section 13 of the main shaft 10.

[0095] The oil baffle 80 partially isolates the oil chamber 30, effectively preventing oil from leaking from the oil chamber 30 into other parts of the compressor 100, especially the motor chamber 40, thereby maintaining the sealing and cleanliness of the oil chamber 30. By reducing oil leakage, the oil baffle 80 helps maintain the amount of oil in the oil chamber 30, ensuring adequate lubrication of all components of the compressor 100, thereby improving the operating efficiency and stability of the compressor 100.

[0096] On the other hand, the oil baffle 80 enhances the overall structural stability of the compressor 100, reducing vibration and noise caused by oil leakage. It also makes maintenance and cleaning of the oil chamber 30 more convenient, reducing maintenance workload caused by oil leakage.

[0097] Furthermore, by optimizing the shape of the oil baffle 80, such as increasing the width or height of the oil baffle 80, its effect in preventing oil leakage can be further improved.

[0098] It should be noted that during installation, excessive assembly force should be avoided on the oil baffle 80 to prevent damage to the oil baffle 80 or deformation of the spindle 10.

[0099] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0101] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A compressor, characterized in that, include: The main shaft is provided with a first oil seal. A sealing tooth cover is located between the oil chamber and the motor chamber. The sealing tooth cover is provided with a second oil seal. When the sealing tooth cover is sleeved on the main shaft, the first oil seal and the second oil seal cooperate to seal the oil chamber.

2. The compressor according to claim 1, characterized in that, The first oil seal includes an oil slinger ring, which is sleeved on the main shaft and extends at least partially into the oil chamber.

3. The compressor according to claim 2, characterized in that, The oil slinger ring includes a first oil slinger ring and a second oil slinger ring, which are spaced apart on the main shaft.

4. The compressor according to claim 3, characterized in that, The outer diameter of the first oil slinger ring is larger than the outer diameter of the second oil slinger ring, and the first oil slinger ring is located on the side of the second oil slinger ring away from the motor cavity.

5. The compressor according to claim 1, characterized in that, The first oil seal includes a sealing threaded portion, and a sealing thread is provided on the outer surface of the sealing threaded portion. The direction of rotation of the sealing thread is opposite to the direction of rotation of the main shaft.

6. The compressor according to claim 5, characterized in that, The sealing thread is a rectangular thread.

7. The compressor according to claim 1, characterized in that, The first oil seal includes an oil slinger ring and a sealing thread portion. Both the oil slinger ring and the sealing thread portion are sleeved on the main shaft, and the oil slinger ring is located on the side of the sealing thread portion away from the motor cavity.

8. The compressor according to claim 1, characterized in that, The first oil seal and the main shaft are integrally machined into a single structure.

9. The compressor according to claim 1, characterized in that, The second oil seal is a sealing tooth pattern, which is provided on the surface of the sealing tooth cover near the main shaft.

10. The compressor according to claim 1, characterized in that, The compressor also includes an oil baffle plate, which is annular and arranged around the main shaft to partially isolate the oil chamber.

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