Sealing structure, compressor body and compressor

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a sealing structure, a compressor body and a compressor. A hollow cavity and a first sealing end face surrounding the hollow cavity are formed in the sealing structure. The sealing structure comprises an annular groove, a sealing ring and an oil storage groove. The annular groove is formed in the first sealing end face and surrounds the hollow cavity. The sealing ring is arranged in the annular groove; the oil storage groove is formed in the first sealing end face, surrounds the hollow cavity and is located between the annular groove and the hollow cavity. In this way, the oil storage groove forms a buffer area, the bearing pressure of the side face of the sealing ring is remarkably reduced, and the conditions of deformation, aging and sealing failure of the sealing ring caused by invasion of refrigerating machine oil and refrigerants are delayed.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical seals, and in particular to a sealing structure, a compressor body and a compressor. Background Art

[0002] With the development of compressor technology, the sealing requirements are becoming increasingly higher to ensure the reliable operation of the equipment under extreme working conditions such as high temperature and high pressure. In the existing technology, an O-ring is usually used to seal between the compressor body and the end face of the exhaust end bearing seat. The O-ring has good flexibility and can adapt to the sealing requirements caused by small unevenness of the end face. However, during the long-term continuous operation of the compressor, due to the influence of factors such as the difference in the roughness of the contact end face between the body and the exhaust end bearing seat, the high temperature and high pressure environment, the refrigeration oil gradually penetrates into the sealing end face, and the side of the O-ring is often affected by the intrusion of the refrigeration oil and the bearing pressure, resulting in leakage of refrigerant and refrigeration oil.

[0003] This leakage directly reduces compressor efficiency, impacting normal operation. Furthermore, leaks of refrigeration oil and refrigerant can damage other components and the environment. Existing O-ring sealing structures struggle to ensure long-term, stable sealing performance. Therefore, effectively improving the reliability of compressor end-face seals and reducing refrigerant and refrigeration oil leakage have become pressing challenges within the industry. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a sealing structure, a compressor body and a compressor.

[0005] According to a first aspect of the present application, an embodiment of the present application provides a sealing structure having a hollow cavity and a first sealing end surface surrounding the hollow cavity, the sealing structure comprising:

[0006] an annular groove, formed on the first sealing end surface and surrounding the hollow cavity;

[0007] a sealing ring, disposed in the annular groove;

[0008] An oil storage tank is provided on the first sealing end surface. The oil storage tank is arranged around the hollow cavity and is located between the annular groove and the hollow cavity.

[0009] Furthermore, a first comb-teeth sealing portion is provided between the oil storage tank and the annular groove, and the first comb-teeth sealing portion is provided around the hollow cavity.

[0010] Furthermore, a second comb-teeth sealing portion is provided between the oil storage tank and the hollow cavity, and the second comb-teeth sealing portion is provided around the hollow cavity.

[0011] Furthermore, an oil return channel is provided at the bottom end of the oil storage tank.

[0012] Furthermore, the sealing structure is provided with a recessed portion formed at one end of the first sealing end surface, and the first sealing end surface protrudes from the recessed portion.

[0013] According to a second aspect of the present application, a compressor body including the sealing structure provided in the first aspect of the present application is also provided.

[0014] Furthermore, in the compressor body, the first sealing end surface is arranged on the exhaust side of the compressor body, and the hollow cavity is a rotor cavity formed in the compressor body.

[0015] Furthermore, a recessed portion is formed on the end face of the compressor body on the exhaust side, the first sealing end face protrudes from the recessed portion, the recessed portion is located outside the first sealing end face, and a plurality of fixing holes are opened on the recessed portion.

[0016] Furthermore, in the compressor body, an oil return channel is provided at the bottom end of the oil storage tank, and the oil return channel is connected to the suction side of the compressor body.

[0017] According to the third aspect of the present application, the present application also provides a compressor, which includes a bearing seat and the compressor body provided by the second aspect of the present application, and a second sealing end face is formed on the bearing seat, and the second sealing end face cooperates with the first sealing end face.

[0018] The design of the sealing structure of the present application not only alleviates the leakage pressure of the refrigerant oil through the oil storage tank, but also enhances the sealing stability of the sealing ring in high temperature and high pressure environments. When the compressor runs for a long time and a small gap appears on the sealing end face due to roughness and working conditions, a small amount of refrigerant oil may seep out from the end face. This refrigerant oil will be stored in the oil storage tank first, thereby effectively preventing the refrigerant oil from directly contacting the side of the sealing ring and reducing its accumulation around the sealing ring and in the annular groove. In this way, the oil storage tank forms a buffer area, significantly reducing the bearing pressure on the side of the sealing ring, and delaying the deformation, aging and sealing failure of the sealing ring caused by the intrusion of refrigeration oil and refrigerant. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0020] Figure 1 The sealing structure diagram of the exhaust end face of the compressor in the related art is schematically given;

[0021] Figure 2 A schematic diagram of the sealing structure of the exhaust end face of a compressor body provided by one embodiment of the present application is provided;

[0022] Figure 3 for Figure 2 AA section view in;

[0023] Figure 4 for Figure 3 A magnified view of the details of part B;

[0024] Figure 5 A schematic diagram of the sealing structure of the exhaust end face of a compressor body provided in another embodiment of the present application is provided;

[0025] Figure 6 for Figure 5 The CC section view in the figure;

[0026] Figure 7 for Figure 6 A magnified view of the details of part D in the middle;

[0027] Figure 8 A schematic diagram of the sealing structure of the exhaust end face of a compressor body provided by one embodiment of the present application is provided;

[0028] Figure 9 for Figure 8 EE cross-sectional view in;

[0029] Figure 10 for Figure 9 A magnified view of the detail of part F in the middle.

[0030] In the picture:

[0031] 1. Hollow cavity;

[0032] 2. First sealing end face;

[0033] 3. Annular groove;

[0034] 4. Oil storage tank;

[0035] 5. First comb tooth sealing portion;

[0036] 6. Second comb teeth sealing portion;

[0037] 7. Oil return channel;

[0038] 8. Sinking platform;

[0039] 9. Compressor body;

[0040] 10. Fixing holes. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0042] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a system, product or device comprising a series of units is not necessarily limited to those units explicitly listed, but may include units that are not explicitly listed or are inherent to these products or devices.

[0043] In this application, terms such as "upper," "lower," "inner," "middle," and "outer" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to specific positions, or to their construction or operation in a specific position.

[0044] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0045] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0046] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0047] In related technologies, such as Figure 1As shown, an O-ring is usually used to seal between the body of a conventional compressor and the end face of the exhaust end bearing seat. The O-ring has good flexibility and can adapt to the sealing requirements caused by slight unevenness of the end face. The exhaust end face of the body of a conventional compressor is provided with an O-ring groove, in which the O-ring is installed. However, during long-term continuous operation of the compressor, due to factors such as the difference in roughness of the contact end face between the body and the exhaust end bearing seat, and the influence of high temperature and high pressure environment, the refrigeration oil gradually penetrates into the sealing end face. The side of the O-ring is often affected by the intrusion of the refrigeration oil and the bearing pressure, resulting in seal failure and leakage of refrigerant and refrigeration oil.

[0048] In order to solve the above problems, the present invention provides a sealing structure. Figure 2-4 As shown, the sealing structure is formed with a hollow cavity 1 and a first sealing end face 2 surrounding the hollow cavity 1. The sealing structure mainly includes an annular groove 3, a sealing ring and an oil storage tank 4, wherein the annular groove 3 is opened on the first sealing end face 2 and surrounds the hollow cavity 1; the sealing ring is arranged in the annular groove 3; the oil storage tank 4 is opened on the first sealing end face 2, and the oil storage tank 4 is arranged around the hollow cavity 1 and is located between the annular groove 3 and the hollow cavity 1.

[0049] In the embodiment of the present application, the design of the sealing structure not only alleviates the leakage pressure of the refrigerant oil through the oil storage tank 4, but also enhances the sealing stability of the sealing ring in a high temperature and high pressure environment. Specifically, when the compressor is running for a long time and a small gap appears on the sealing end face due to roughness and working conditions, a small amount of refrigerant oil may seep out from the end face. This refrigerant oil will be stored in the oil storage tank 4 first, thereby effectively preventing the refrigerant oil from directly contacting the side of the sealing ring and reducing its accumulation around the sealing ring and in the annular groove 3. In this way, the oil storage tank 4 forms a buffer area, significantly reducing the bearing pressure on the side of the sealing ring, and delaying the deformation, aging and sealing failure of the sealing ring caused by the intrusion of refrigeration oil and refrigerant.

[0050] Furthermore, the oil reservoir 4 is strategically positioned between the annular groove 3 and the hollow cavity 1, allowing it to collect refrigerant oil without compromising the sealing performance of the sealing ring. This arrangement prevents leaking refrigerant oil from being trapped by the reservoir 4, rather than directly entering the area where the sealing ring is located, further enhancing the sealing effect. This design ensures that the sealing ring maintains a secure seal even in long-term, high-temperature, and high-pressure operating environments, reducing maintenance frequency and extending the life of the equipment.

[0051] Based on the above implementation, Figure 5-7As shown, a first comb-tooth seal 5 is provided between the oil storage tank 4 and the annular groove 3, and the first comb-tooth seal 5 is provided around the hollow cavity 1. In this embodiment, the sealing structure adds a first comb-tooth seal 5 between the oil storage tank 4 and the annular groove 3. The first comb-tooth seal 5 is a comb-tooth structure formed by a plurality of continuous grooves. This structure can play a role in throttling and reducing pressure, and can effectively reduce the leakage of fluid from the first comb-tooth seal 5 to the outside. The first comb-tooth seal 5 is provided in an annular shape around the hollow cavity 1, further improving the sealing effect. This design forms multiple barriers to the leakage of the refrigerant oil through the comb-tooth-shaped multi-channel groove structure, so that the refrigerant oil is effectively separated and blocked in the leakage path, preventing it from directly penetrating into the sealing ring contact surface in the annular groove 3.

[0052] When the compressor is operating, even under conditions of high temperature, high pressure, and end-face roughness deviation, a small amount of refrigerant oil that leaks out will first be buffered by the oil reservoir 4 and then gradually blocked by the first comb-tooth seal 5. This design ensures that the oil reservoir 4 and the first comb-tooth seal 5 form a synergistic structure, not only extending the refrigerant oil's permeation path, but also slowing the accumulation of refrigerant oil pressure on the side of the seal ring, thereby significantly reducing the risk of seal ring failure. In other words, the configuration of the first comb-tooth seal 5 creates an additional barrier to the refrigerant oil leakage path, further improving the stability and reliability of the overall sealing structure, and ensuring that equipment using this sealing structure can maintain effective sealing performance even under harsh operating conditions.

[0053] Based on the above implementation, Figure 8-10 As shown, a second comb-tooth seal 6 is disposed between the oil reservoir 4 and the hollow cavity 1, and is disposed around the hollow cavity 1. In this embodiment, the sealing structure is designed to form a multi-layered seal structure, with the second comb-tooth seal 6, the oil reservoir 4, the first comb-tooth seal 5, and the sealing ring arranged layer by layer from the inside out. This design not only effectively prevents refrigerant oil leakage, significantly improving the durability and reliability of the overall seal, but also provides protection for the sealing ring, reducing its compressive load and extending its service life.

[0054] Specifically, the first layer of protection is the second comb-tooth seal 6, which is arranged around the hollow cavity 1 and forms an effective initial barrier on the inner side of the sealing end face through its comb-tooth structure. The comb-tooth structure is designed to be densely distributed with small teeth and tooth grooves, which has a throttling and pressure-reducing effect. When the refrigerant oil penetrates to this point, multiple divisions are formed, which reduces the flow rate of the refrigerant oil and extends its penetration path, thereby achieving preliminary leakage control. The oil storage tank 4 adjacent to the second comb-tooth seal 6 serves as the second layer of protection. It is designed as an annular storage space that can effectively accommodate a small amount of infiltrated refrigerant oil to prevent it from further overflowing. The existence of the oil storage tank 4 not only serves as a collection pool for the refrigerant oil, but also relieves the penetration pressure of the refrigerant oil on the outer sealing component. The first comb-tooth seal 5 provided on the outside serves as the third line of defense, further forming a comb-tooth-shaped sealing structure around the oil reservoir 4. This comb-tooth seal provides additional diversion and delaying effect after the refrigerant oil has passed through the oil reservoir 4, further limiting the oil's diffusion range. Its presence creates more penetration barriers before the refrigerant oil seeps out to the sealing ring, ensuring that the flow of the refrigerant oil can be effectively slowed down even under high-pressure environments, making it difficult for the refrigerant oil to reach the outermost sealing ring. The outermost sealing ring serves as the final sealing barrier, surrounding the first comb-tooth seal 5. Even if the refrigerant oil penetrates here, it will be reliably blocked by the sealing ring, preventing the refrigerant oil and refrigerant from further leaking out, thus ensuring the sealing integrity of the compressor.

[0055] Through this layered protective structure design, even if refrigerant oil leaks in harsh environments such as high temperature and high pressure, it will be blocked and buffered by multiple barriers, ultimately making it difficult for the oil to reach the sides of the seal, reducing the pressure the seal needs to bear. This not only effectively controls the risk of refrigerant oil and refrigerant leakage, but also reduces seal wear and extends its service life, significantly improving the reliability and durability of the overall sealing structure.

[0056] In some embodiments, as Figure 2-10 As shown, an oil return channel 7 is provided at the bottom end of the oil storage tank 4. The oil return channel 7 is used to promptly guide the refrigerant oil accumulated in the oil storage tank 4. For example, when the sealing structure is applied to a compressor, the refrigerant oil accumulated in the oil storage tank 4 can be guided back to the internal circulation system of the compressor through the oil return channel 7. The oil return channel 7 is designed to be a controllable channel that can guide the refrigerant oil accumulated in the oil storage tank 4 back to the desired location, effectively preventing the refrigerant oil from stagnating in the oil storage tank 4 for a long time, thereby avoiding the oil storage tank 4 from losing its storage and buffering functions due to excessive oil. The provision of the oil return channel 7 further improves the drainage and self-cleaning functions of the sealing structure, ensuring that the sealing structure always maintains a good working condition.

[0057] The design of oil return channel 7 ensures that even under prolonged high-pressure operation, refrigerant oil leaking into oil reservoir 4 will not continue to diffuse outward. Instead, it will effectively flow back to other structures, maintaining oil recycling and reuse. This structure not only improves sealing performance but also increases system efficiency, contributing to the resource utilization of refrigerant oil and the control of refrigerant leaks. The size and position of oil return channel 7 can be optimized based on the oil return requirements of the application scenario, ensuring the effectiveness of the oil return function and further extending the service life and reliability of the sealing system.

[0058] In some embodiments, as Figure 2-10 As shown, the sealing structure is provided with a recessed platform 8 formed at one end of the first sealing end face 2, and the first sealing end face 2 protrudes from the recessed platform 8. This design helps to optimize the pressure distribution of the end face contact and improve the sealing performance. Specifically, the recessed platform 8 is formed by performing a surface reduction process on the non-sealing contact surface, which reduces the contact area between the end faces. This design can effectively avoid the problems of excessive contact area and insufficient sealing pressure caused by full contact of the end faces in traditional technology. By providing the recessed platform 8, the contact area can be reduced, and the pressure of the sealing ring is concentrated in a smaller area, thereby greatly increasing the surface pressure of the sealing ring and enhancing the sealing performance. After the surface pressure increases, the sealing ring can better resist external pressure and leakage of refrigerant and refrigeration oil, ensuring that the sealing effect is long-lasting and stable. In addition, the provision of the recessed platform 8 also brings certain mechanical advantages. When the sealing structure is under high temperature or high pressure conditions, the design of the recessed platform 8 helps to mitigate the impact of thermal expansion or pressure changes on surface contact. In general, by providing the sinking portion 8, the sealing structure not only increases the surface pressure of the sealing ring and enhances the sealing effect, but also improves the reliability of the sealing structure in a long-term high-pressure and high-temperature environment, reduces the risk of leakage and equipment damage, and further extends the service life of the equipment. It is particularly suitable for equipment such as screw compressors that need to run for a long time.

[0059] The present embodiment also provides a compressor body 9, which includes the sealing structure provided in the aforementioned embodiment. The compressor body 9 utilizes the aforementioned sealing structure and integrates it into a key sealing portion of the compressor to improve the sealing performance and operational reliability of the entire compressor.

[0060] Specifically, the compressor body 9 includes a sealing end face having the above-mentioned sealing structure, which is used to cooperate with other compressor components (such as the exhaust end bearing seat, etc.) to form a sealed contact. During the long-term operation of the compressor, through the annular groove 3 and the oil storage tank 4 provided in the sealing structure, when the refrigeration oil or refrigerant leaks through the end face, the leaked material will be preferentially collected by the oil storage tank 4, reducing the pressure on the sealing ring and preventing further damage to the sealing performance due to leakage. By adopting the sealing structure provided by the present application, the compressor body 9 can effectively improve the sealing reliability, reduce the risk of leakage of refrigerant or refrigeration oil, thereby improving the working efficiency and service life of the compressor. Especially in high temperature and high pressure working environments, the sealing structure can ensure a good seal between the compressor body 9 and other components, prevent gas or oil leakage, further reduce the frequency of equipment maintenance, and reduce operating costs. And through one or more designs in the first comb tooth seal 5 and the second comb tooth seal 6, the sealing performance is further improved, so that the compressor body 9 can maintain a stable sealing effect during long-term high-load operation, avoid performance degradation caused by leakage of refrigerant and refrigeration oil, and ensure that the compressor can still operate stably under complex working conditions.

[0061] In some embodiments, in the compressor body 9, the first sealing end face 2 is arranged on the exhaust side of the compressor body 9, and the hollow cavity 1 is a rotor cavity formed in the compressor body 9. The rotor cavity is a space inside the compressor for accommodating the rotor and related moving parts, which is usually in a high-pressure area and therefore has high sealing requirements. By configuring the sealing structure on the sealing end face on the exhaust side, it is possible to effectively prevent high-pressure gas or refrigeration oil from leaking through the end face, thereby ensuring isolation between the rotor cavity and the external environment. Under this configuration, the sealing structure can effectively prevent the refrigeration oil and refrigerant in the high-pressure area from leaking to the external environment, especially at the sealing end face on the exhaust side. Since the pressure on the exhaust side is usually high during the operation of the compressor, if the sealing is poor, it may cause gas or oil leakage, affecting the performance and efficiency of the compressor. By providing a sealing structure with an oil storage tank 4, a comb-tooth sealing portion and a sealing ring, the risk of leakage can be reduced, the sealing reliability can be ensured, and by reducing the amount of leakage, the pressure on sealing materials such as the sealing ring is reduced, thereby extending the service life of the sealing material and further improving the operating stability of the entire compressor.

[0062] Furthermore, the sealing structure ensures the stable containment of high-pressure gas within the rotor cavity, minimizing any interaction with the external environment and improving the compressor's overall performance and energy efficiency. This optimized design allows the compressor to maintain high efficiency and reliability during extended, high-load operation, while preventing system failures or energy efficiency degradation due to leakage.

[0063] In some embodiments, a recessed platform 8 is formed on the end face of the exhaust side of the compressor body 9, and the first sealing end face 2 protrudes from the recessed platform 8. The recessed platform 8 is located on the outside of the first sealing end face 2, and a number of fixing holes 10 are provided on the recessed platform 8. This design takes into account both the sealing function and the fixing function of the sealing end face, and effectively enhances the connection stability and sealing effect of the sealing structure. Specifically, the design of the recessed platform 8 increases the surface pressure of the sealing ring by reducing the contact area between the sealing end face and the contact surface, ensuring that the sealing ring can provide sufficient sealing force under the high-pressure environment of the compressor to prevent gas and oil leakage; the number of fixing holes 10 provided on the recessed platform 8 provide connection and fixing points between the sealing structure and other components (such as bearing seats, etc.). During the operation of the compressor, these fixing holes 10 are connected to other structural parts through fasteners, so that the sealing structure always remains stable in a high-temperature and high-pressure working environment, preventing the loosening or failure of the sealing structure due to mechanical vibration or external force.

[0064] In some embodiments, in the compressor body 9, an oil return channel 7 is provided at the bottom end of the oil storage tank 4, and the oil return channel 7 is connected to the intake side of the compressor body 9. This design allows the low-temperature intake side and the high-temperature exhaust side to be connected through the oil return channel 7, achieving effective refrigeration oil return while also having multiple advantages: First, the provision of the oil return channel 7 can help form heat exchange through the low-temperature intake side, reducing the temperature of the refrigeration oil leaking from the high-temperature exhaust side into the oil storage tank 4. Since the sealing ring usually reduces the sealing effect due to changes in material properties caused by high temperature, the reduction in temperature in the oil storage tank 4 area helps to slow down the aging and expansion of the sealing ring material, thereby reducing the problem of sealing failure caused by excessive temperature. By reducing the temperature of the oil storage tank 4 and the refrigeration oil therein, the service life of the sealing structure can be effectively improved and the risk of refrigerant leakage can be reduced. Secondly, when the refrigerant oil leaks into the oil storage tank 4 and accumulates, if the pressure in the oil storage tank 4 is greater than the pressure on the suction side, the leaked refrigerant oil will flow back to the suction side through the oil return groove and the oil return channel 7. This design not only effectively reduces the risk of refrigerant oil leaking into the sealing ring and the annular groove 3, but also slows down the accumulation pressure of the refrigerant oil through the refrigeration effect, avoiding excessive loss of the sealing structure due to excessive pressure. This design effectively enhances the sealing effect of the compressor, ensures the refrigeration oil's refrigeration and temperature control, and can effectively support the long-term stable operation of the sealing ring to reduce the risk of leakage, thereby improving the overall operating efficiency and reliability of the equipment. In addition, the design of the oil return channel 7 also helps to improve the oil circuit system of the compressor, ensure that the refrigerant oil circulates in the system, avoids oil accumulation and waste, and further improves energy efficiency.

[0065] The embodiment of the present application also provides a compressor, which includes a bearing seat and the compressor body 9 disclosed in the aforementioned embodiment of the present application. In the compressor, a second sealing end face is formed on the bearing seat, and the second sealing end face cooperates with the first sealing end face 2. Specifically, the first sealing end face 2 is located on the exhaust side of the compressor body 9, while the second sealing end face is arranged on the bearing seat and is in relative contact with the first sealing end face 2. The sealing cooperation between the two constitutes a key sealing area in the compressor, which effectively prevents the leakage of refrigerant or refrigeration oil, while ensuring the sealing and operating stability of the compressor under high pressure and high temperature conditions. Through the reasonable design of the cooperation between the first sealing end face 2 and the second sealing end face, the tightness of the sealing structure can be ensured, and the sealing failure problem caused by the leakage of refrigeration oil or refrigerant can be prevented, so that the compressor can maintain a high sealing effect in a harsh working environment and avoid the risk of leakage due to high pressure or high temperature. The specific types of compressors include but are not limited to screw compressors.

[0066] It should be noted that, compared with conventional compressors, the compressor provided in the present application can be obtained by only changing part of the structure of the exhaust end face of the compressor body 9, thereby solving the problem of sealing ring leakage without adding any new components, avoiding complex design or additional parts, and significantly reducing the modification cost.

[0067] Specifically, the improvements of this application are mainly focused on the structural adjustment of the exhaust end face of the compressor body 9. A simple mechanical processing process can be used to form the oil storage tank 4, the first comb tooth seal 5, the second comb tooth seal 6 and the sinking platform 8 on the exhaust end face, all of which are subtractive processing based on the existing structure. These structural changes effectively increase the surface pressure of the sealing ring, reduce the risk of leakage of refrigerant and refrigeration oil, and enhance the sealing effect. Moreover, since this improvement is based on the structural adjustment of existing components rather than the addition of new components, it will not burden the overall cost of the compressor, nor does it require complex production processes. It can maintain a low transformation cost, making this technical solution highly economical and practical.

[0068] Some embodiments in this specification are described in a progressive or parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referenced to each other.

[0069] The above are merely specific embodiments of the present application to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather is intended to conform to the widest scope consistent with the principles and novel features of the present application.

Claims

1. A sealing structure, comprising a hollow cavity and a first sealing end surface surrounding the hollow cavity, characterized in that: include: an annular groove, formed on the first sealing end surface and surrounding the hollow cavity; a sealing ring, disposed in the annular groove; An oil storage tank is provided on the first sealing end surface. The oil storage tank is arranged around the hollow cavity and is located between the annular groove and the hollow cavity.

2. The sealing structure according to claim 1, wherein: A first comb-teeth sealing portion is provided between the oil storage tank and the annular groove, and the first comb-teeth sealing portion is provided around the hollow cavity.

3. The sealing structure according to claim 1, wherein: A second comb-teeth sealing portion is provided between the oil storage tank and the hollow cavity, and the second comb-teeth sealing portion is provided around the hollow cavity.

4. The sealing structure according to claim 1, wherein: An oil return channel is provided at the bottom end of the oil storage tank.

5. The sealing structure according to any one of claims 1 to 4, characterized in that: The sealing structure is provided with a recessed portion at one end of the first sealing end surface, and the first sealing end surface protrudes from the recessed portion.

6. A compressor body, characterized in that: The sealing structure comprises the sealing structure according to any one of claims 1 to 5.

7. The compressor body according to claim 6, characterized in that The first sealing end surface is arranged on the exhaust side of the compressor body, and the hollow cavity is a rotor cavity formed in the compressor body.

8. The compressor body according to claim 7, characterized in that A sinking portion is formed on the end face of the compressor body on the exhaust side. The first sealing end face protrudes from the sinking portion. The sinking portion is located outside the first sealing end face and is provided with a plurality of fixing holes.

9. The compressor body according to claim 6, characterized in that An oil return passage is formed at the bottom end of the oil storage tank, and the oil return passage is connected to the suction side of the compressor body.

10. A compressor, characterized in that: It comprises a bearing seat and a compressor body as described in any one of claims 6 to 9, wherein a second sealing end face is formed on the bearing seat, and the second sealing end face cooperates with the first sealing end face.

Images