Sealing structure, compressor body and compressor

Abstract

The invention 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 getting higher and higher to ensure the reliable operation of the equipment under extreme working conditions such as high temperature and high pressure. In the prior art, 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 slight unevenness of the end face. However, during the long-term continuous operation of the compressor, due to 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 and other factors, the refrigeration oil gradually penetrates into the sealing end face, and the side of the O-ring is often affected by the invasion of the refrigeration oil and the bearing pressure, resulting in leakage of refrigerant and refrigeration oil.

[0003] This leakage phenomenon will directly reduce the working efficiency of the compressor and affect its normal operation. At the same time, the leakage of refrigeration oil and refrigerant may also cause damage to other components and the environment. The existing O-ring sealing structure is difficult to ensure long-term stable sealing performance. Therefore, how to effectively improve the reliability of the compressor end face seal and reduce the leakage of refrigerant and refrigeration oil has become an urgent problem to be solved in the industry. Summary of the invention

[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, a sealing structure provided in an embodiment of the present application is formed with a hollow cavity and a first sealing end surface surrounding the hollow cavity, and the sealing structure includes:

[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, and 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 platform at one end of the first sealing end surface, and the first sealing end surface protrudes from the recessed platform.

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

[0014] Further, 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 platform is formed on the end surface of the compressor body on the exhaust side, the first sealing end surface protrudes from the recessed platform, the recessed platform is located outside the first sealing end surface, and a plurality of fixing holes are formed on the recessed platform.

[0016] Furthermore, in the compressor body, an oil return passage is provided at the bottom end of the oil storage tank, and the oil return passage 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 a 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 under high temperature and high pressure environment. 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 constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

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

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

[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 sealing structure diagram of the exhaust end face of a compressor body provided by another embodiment of the present application is schematically shown;

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

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

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

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

[0029] Fig.10 for Fig. 9 A detailed enlarged view of part F in the middle.

[0030] In the figure:

[0031] 1. Hollow cavity;

[0032] 2. The 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 solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0042] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present 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 inherent to these products or devices.

[0043] In this application, the directions or positional relationships indicated by the terms "upper", "lower", "inner", "middle", "outer", etc. are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0044] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0045] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may 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. An O-ring groove is provided on the exhaust end face of the body of a conventional compressor, and the O-ring is installed in the O-ring groove. However, during the long-term continuous operation of the compressor, due to 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 and other factors, the refrigeration oil gradually penetrates into the sealing end face, and the side of the O-ring is often affected by the invasion of the refrigeration oil and the bearing pressure, resulting in sealing failure and leakage of refrigerant and refrigeration oil.

[0048] In order to solve the above problems, the present application embodiment provides a sealing structure, such as 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, and 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 under high temperature and high pressure environment. Specifically, 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. These refrigerant oils will be stored in the oil storage tank 4 first, thereby effectively avoiding 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] In addition, the oil storage tank 4 is cleverly arranged between the annular groove 3 and the hollow cavity 1, so that it can collect the refrigerant oil without affecting the sealing performance of the sealing ring. Through this layout, when the refrigerant oil leaks, it will first be intercepted by the oil storage tank 4 instead of directly entering the area where the sealing ring is located, further improving the sealing effect. This design can continuously maintain the stable sealing of the sealing ring in a long-term high-temperature and high-pressure working environment, reduce maintenance frequency, and extend the service 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, which 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 for 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, and prevents it from directly penetrating into the sealing ring contact surface in the annular groove 3.

[0052] When the compressor is working, even under the conditions of high temperature, high pressure and end surface roughness deviation, a small amount of leaked refrigerant oil will first be buffered by the oil storage tank 4, and then be blocked step by step by the first comb-tooth seal 5. This design ensures that the oil storage tank 4 and the first comb-tooth seal 5 form a synergistic effect in structure, which not only prolongs the penetration path of the refrigerant oil, but also slows down the pressure accumulation of the refrigerant oil on the side of the sealing ring, thereby significantly reducing the risk of failure of the sealing ring. That is, the setting of the first comb-tooth seal 5 builds an additional barrier for the leakage path of the refrigerant oil, further improving the stability and reliability of the overall sealing structure, and ensuring that the equipment using this sealing structure can still maintain effective sealing performance under harsh working conditions.

[0053] Based on the above implementation, Figure 8-10 As shown, a second comb-tooth seal 6 is provided between the oil storage tank 4 and the hollow cavity 1, and the second comb-tooth seal 6 is provided around the hollow cavity 1. In this embodiment, the design of the sealing structure arranges the second comb-tooth seal 6, the oil storage tank 4, the first comb-tooth seal 5 and the sealing ring layer by layer from the inside to the outside to form a multi-layer sealing structure. This design can not only effectively block the leakage of the refrigerant oil, significantly improve the durability and reliability of the overall seal, but also provide protection for the sealing ring, reduce its pressure load and extend 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 prolongs 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 and 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 arranged on the outside serves as the third line of protection, and further forms a comb-tooth-shaped sealing structure around the oil storage tank 4. This layer of comb-tooth seal plays an additional role of diversion and delay after the refrigerant oil has passed through the oil storage tank 4, further limiting the diffusion range of the oil. Its existence 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, 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 to prevent the refrigerant oil and refrigerant from continuing to leak out, thereby ensuring the sealing integrity of the compressor.

[0055] Through this layer-by-layer protection structure design, even if the refrigeration oil leaks in harsh environments such as high temperature and high pressure, it will be blocked and buffered by multiple barriers, and it will eventually be difficult to reach the side of the sealing ring, reducing the pressure that the sealing ring needs to bear. This not only effectively controls the risk of leakage of refrigeration oil and refrigerant, but also reduces the wear of the sealing ring, extends its service life, and greatly improves the reliability and durability of the overall sealing structure.

[0056] In some embodiments, 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 timely 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 as a controllable channel, which can guide the refrigerant oil accumulated in the oil storage tank 4 back to the required position in a directional manner, effectively preventing the refrigerant oil from stagnating in the oil storage tank 4 for a long time, thereby preventing the oil storage tank 4 from losing its storage and buffering functions due to excessive oil. The setting 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] Through the design of the oil return channel 7, even under long-term high-pressure operation, the refrigerant oil will not continue to spread outward after leaking into the oil storage tank 4, but can effectively flow back to other structures to maintain the recycling of the oil. This structure improves the sealing performance while also improving the efficiency of the system, which helps to utilize the resources of the refrigerant oil and control the leakage of the refrigerant. The size and position of the oil return channel 7 can be optimized according to the oil return requirements of the application scenario to ensure the effectiveness of the oil return function and further extend the service life and reliability of the sealing system.

[0058] In some embodiments, Figure 2-10 As shown, the sealing structure is provided with a sinking portion 8 formed at one end of the first sealing end face 2, and the first sealing end face 2 protrudes from the sinking portion 8. This design helps to optimize the pressure distribution of the end face contact and improve the sealing performance. Specifically, the sinking portion 8 is formed by lowering 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 complete contact of the end faces in traditional technology. By setting the sinking portion 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 setting of the sinking portion 8 also brings certain mechanical advantages. When the sealing structure is under high temperature or high pressure conditions, the design of the sinking portion 8 helps to mitigate the impact of thermal expansion or pressure changes on the 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 embodiment of the present application also protects a compressor body 9, which is provided with the sealing structure provided in the above embodiment. The compressor body 9 adopts the above sealing structure and integrates it in the key sealing part of the compressor to improve the sealing performance and working 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 the leakage from further damaging the sealing performance. 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 the 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 good sealing 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 a high sealing requirement. 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 leakage amount, the pressure on the sealing material such as the sealing ring can be reduced, thereby extending the service life of the sealing material, and further improving the operating stability of the entire compressor.

[0062] In addition, the setting of the sealing structure ensures the stable sealing of the high-pressure gas in the rotor cavity, reduces the mutual influence with the external environment, and improves the overall performance and energy efficiency of the compressor. Through this optimized design, the compressor can maintain efficient and reliable working conditions during long-term high-load operation, while avoiding system failures or energy efficiency reduction caused by leakage.

[0063] In some embodiments, a sinking portion 8 is formed on the end face of the exhaust side of the compressor body 9, the first sealing end face 2 protrudes from the sinking portion 8, the sinking portion 8 is located on the outside of the first sealing end face 2, and a number of fixing holes 10 are opened on the sinking portion 8. This design takes into account the sealing function and 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 sinking portion 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 several fixing holes 10 opened on the sinking portion 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 suction side of the compressor body 9. This design allows the low-temperature suction side and the high-temperature exhaust side to be connected through the oil return channel 7, which achieves effective refrigeration oil reflux and has multiple advantages: first, the setting of the oil return channel 7 can help form heat exchange through the low-temperature suction side, reduce the temperature of the refrigerant oil leaking from the high-temperature exhaust side into the oil storage tank 4, and because 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 refrigerant 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 reduces the accumulation pressure of the refrigerant oil through the reflux 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 reflux and temperature control, can effectively support the long-term stable operation of the sealing ring to reduce the risk of leakage, and improve the overall operation 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, ensures that the refrigerant oil circulates in the system, avoids the accumulation and waste of oil, and further improves the energy utilization efficiency.

[0065] The embodiment of the present application also provides a compressor, which includes a bearing seat and a 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, and 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 caused by high pressure or high temperature. 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 improvement of this application is mainly focused on the structural adjustment of the exhaust end face of the compressor body 9. The oil storage tank 4, the first comb tooth seal 5, the second comb tooth seal 6 and the sink 8 can be formed on the exhaust end face by using a simple mechanical processing process, which are all 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. Since this improvement is based on the structural adjustment of existing parts rather than adding new parts, it will not burden the overall cost of the compressor, nor does it require complex production processes, and 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 is only a specific implementation of the present application, so that those skilled in the art can 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 can 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 will conform to the widest range consistent with the principles and novel features applied for herein.

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, characterized in that: A first comb-teeth sealing portion is disposed between the oil storage tank and the annular groove, and the first comb-teeth sealing portion is disposed around the hollow cavity.

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

4. The sealing structure according to claim 1, characterized in that: 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 platform at one end of the first sealing end surface, and the first sealing end surface protrudes from the recessed platform.

6. A compressor body, characterized in that: Comprising a sealing structure as described in any one of claims 1-5.

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 surface of the compressor body on the exhaust side, the first sealing end surface protrudes from the sinking portion, the sinking portion is located on the outer side of the first sealing end surface, and a plurality of fixing holes are opened on the sinking portion.

9. The compressor body according to claim 6, characterized in that: An oil return passage is provided 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 claimed 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