Compressor shell structure, compressor and scroll compressor

Abstract

The utility model provides a compressor shell structure, a compressor and a scroll compressor, the compressor shell structure comprises a bearing shell, and the bearing shell is internally provided with a containing cavity and a bearing mounting hole which are communicated with each other; a working medium carrying lubricating oil flows through the accommodating cavity and the bearing mounting hole, and at the moment, a path through which the working medium flows is a first circulation path; wherein the working medium is provided with one or more circulation paths in the bearing shell; under the condition that the number of the circulation path of the working medium is one, the circulation path is a first circulation path; under the condition that the number of the circulation paths of the working medium is multiple, the multiple circulation paths comprise the first circulation path, and the flow of the first circulation path is maximum. Lubricating oil in a working medium can effectively flow to the compressor bearing, reliable lubricating and cooling of the compressor bearing are achieved, and the problem that in the prior art, the lubricating effect of the bearing in a compressor is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of scroll compressors, and in particular to a compressor housing structure, a compressor and a scroll compressor. Background Art

[0002] At present, the bearing lubrication of a scroll compressor is generally achieved through the oil mist of lubricating oil; the lubricating oil in the compressor forms droplets or oil mist due to the movement of various moving parts in the compressor, and is mixed in the working fluid compressed by the compressor. The lubricating oil mixed in the working fluid enters the suction cavity from the medium inlet of the compressor to flow along with the working fluid; however, the existing compressor housing is usually a split structure, and there are many internal suction channels (i.e., the flow channels of the working fluid), and multiple suction channels are usually not directly connected to the bearing, so that the lubricating oil in the working fluid cannot directly move to the bearing; in addition, even if one of the small suction channels is connected to the bearing, the multiple suction channels will still divide the working fluid, and thus the flow rate of the lubricating oil moving to the bearing position through the small suction channel is very small, resulting in insufficient lubrication of the compressor bearing. Summary of the Utility Model

[0003] The utility model provides a compressor housing structure, a compressor and a scroll compressor to solve the problem of poor lubrication effect of the internal bearing of the existing compressor.

[0004] To solve the above problems, according to one aspect of the utility model, a compressor housing structure is provided, which includes a bearing housing. An accommodation cavity and a bearing mounting hole that communicate with each other are provided inside the bearing housing; the accommodation cavity is used to accommodate other components of the compressor; the bearing mounting hole is used to mount and limit the compressor bearing; the working medium carrying lubricating oil flows through the accommodation cavity and the bearing mounting hole, and at this time, the path through which the working medium flows is the first flow path; wherein, the working medium has one or more flow paths in the bearing housing; under the condition that the flow path of the working medium is one, this flow path is the first flow path; under the condition that the flow path of the working medium is multiple, the multiple flow paths include the first flow path, and the flow rate of the first flow path is the largest.

[0005] Furthermore, the bearing housing also has a medium inlet and a medium outlet, and the medium inlet and the medium outlet are respectively communicated with the accommodation cavity; in the first flow path, the working medium carrying lubricating oil enters from the medium inlet, flows through the accommodation cavity and the bearing mounting hole, and flows out from the medium outlet; the working medium has a unique flow path in the accommodation cavity, and this flow path is the first flow path, so that the working medium carrying lubricating oil all flows through the compressor bearing.

[0006] Further, the accommodation cavity includes a first accommodation cavity and a second accommodation cavity, and the first accommodation cavity and the second accommodation cavity are communicated through a bearing mounting hole; the medium inlet is communicated with the first accommodation cavity, and the medium outlet is communicated with the second accommodation cavity; in the first flow path, the working medium carrying lubricating oil enters the first accommodation cavity from the medium inlet, flows through the bearing mounting hole into the second accommodation cavity, the second accommodation cavity is used to accommodate the compression structure of the compressor, the working medium is compressed in the second accommodation cavity, and then flows out from the medium outlet.

[0007] Further, the bearing housing is an integral housing structure.

[0008] Further, the bearing housing further has a protruding portion, and the protruding portion is used to bear the compressor bearing; wherein, the protruding portion has a groove and a bearing mounting hole, the groove is communicated with the bearing mounting hole, the accommodation cavity respectively, and is communicated with the inside and the outer periphery of the compressor bearing.

[0009] Further, there are a plurality of grooves, and the plurality of grooves are circumferentially spaced along the bearing mounting hole, and the grooves extend radially along the bearing mounting hole.

[0010] Further, the groove is a square groove, and the central axes of the plurality of square grooves extending radially along the bearing mounting hole intersect at the center of the cross section of the bearing mounting hole; the plurality of square grooves are equidistantly circumferentially spaced along the bearing mounting hole.

[0011] Further, the accommodation cavity includes a first accommodation cavity and a second accommodation cavity, and the first accommodation cavity and the second accommodation cavity are communicated through a bearing mounting hole; in the first flow path, the working medium carrying lubricating oil first enters the first accommodation cavity, after flowing through the bearing mounting hole and the compressor bearing, at least a part of the working medium enters the groove, passes through the groove and enters the second accommodation cavity, the second accommodation cavity is used to accommodate the compression structure of the compressor, and the working medium is compressed in the second accommodation cavity.

[0012] Further, the protruding portion further has a flow hole, the flow hole is communicated with the bearing mounting hole and the first accommodation cavity respectively, and the aperture of the flow hole is smaller than the aperture of the bearing mounting hole; in the first flow path, the working medium carrying lubricating oil first enters the first accommodation cavity and enters the bearing mounting hole through the flow hole.

[0013] Further, the compressor housing structure further includes a filter screen, the filter screen is fixedly arranged in the flow hole or the bearing mounting hole and is located between the compressor bearing and the first accommodation cavity, and is used to filter the lubricating oil flowing to the position of the compressor bearing.

[0014] Further, the compressor housing structure further includes a filter screen, the filter screen is arranged on the first flow path and is used to filter the lubricating oil.

[0015] According to another aspect of the present utility model, a compressor is provided. The compressor includes the above-mentioned compressor housing structure; the compressor further includes a compressor bearing, and the compressor bearing is arranged in a bearing mounting hole and is in limit fit with the inner wall of the bearing mounting hole.

[0016] According to another aspect of the present utility model, a scroll compressor is provided. The scroll compressor includes the above-mentioned compressor housing structure; the scroll compressor further includes a compressor bearing, and the compressor bearing is arranged in a bearing mounting hole and is in limit fit with the inner wall of the bearing mounting hole.

[0017] Further, the scroll compressor further includes a motor component, a crankshaft component, a moving disk component and a stationary disk component; the motor component is drivingly connected to the crankshaft component to drive the crankshaft component to rotate; the moving disk component is arranged on the crankshaft component to rotate with the crankshaft component; the moving disk component is matched with the stationary disk component; wherein, the crankshaft component passes through the compressor bearing and is matched with the compressor bearing.

[0018] Further, the bearing housing further has a medium inlet and a medium outlet; the accommodating cavity includes a first accommodating cavity and a second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are communicated through the bearing mounting hole; the medium inlet is communicated with the first accommodating cavity, and the medium outlet is communicated with the second accommodating cavity; the motor component is arranged in the first accommodating cavity; the moving disk component and the stationary disk component are respectively arranged in the second accommodating cavity; in the first flow path, the working medium carrying lubricating oil enters the first accommodating cavity from the medium inlet, flows through the motor component, the bearing mounting hole, and the compressor bearing and then enters the second accommodating cavity, and the moving disk component and the stationary disk component compress the working medium in the second accommodating cavity, and the compressed working medium flows out from the medium outlet.

[0019] Further, the scroll compressor further includes a front end cover and a rear end cover. The front end cover is detachably arranged at one end of the bearing housing close to the second accommodating cavity to seal the second accommodating cavity; the rear end cover is detachably arranged at one end of the bearing housing close to the first accommodating cavity to seal the first accommodating cavity; wherein, the second accommodating cavity envelopes the outer periphery of the stationary disk component.

[0020] Further, the compressor bearing is a rolling bearing; in the first flow path, the working medium carrying lubricating oil flows through the inner ring of the rolling bearing to lubricate the rolling bearing with the lubricating oil.

[0021] Applying the technical solution of the present utility model, the present utility model provides a compressor housing structure, including a bearing housing, and the interior of the bearing housing has a mutually connected accommodation cavity and a bearing mounting hole; the accommodation cavity is used to accommodate other components of the compressor; the bearing mounting hole is used to mount and position the compressor bearing; the working medium carrying lubricating oil flows through the accommodation cavity and the bearing mounting hole, and at this time, the path through which the working medium flows is the first flow path; wherein, the working medium has one or more flow paths in the bearing housing; under the condition that the flow path of the working medium is one, this flow path is the first flow path; under the condition that the flow paths of the working medium are multiple, the multiple flow paths include the first flow path, and the flow rate of the first flow path is the largest.

[0022] By arranging that the working medium carrying lubricating oil flows through the accommodation cavity and the bearing mounting hole, the present utility model enables the lubricating oil in the working medium to effectively flow to the compressor bearing, realizing reliable lubrication and cooling of the compressor bearing, and solving the problem of poor lubrication effect of the internal bearing of the compressor in the prior art; by arranging that the flow rate of the first flow path is the largest, under the condition of multiple flow paths, it is ensured that the flow rate of the lubricating oil flowing to the compressor bearing is sufficient, so that the compressor bearing is fully lubricated, ensuring the working reliability and service life; the compressor housing structure proposed by the present utility model has a simple structure and reliable operation; it is found in actual production that for the compressor using the compressor housing structure proposed by the present utility model, the overall number of parts is small, the assembly process flow of the compressor is simple, reducing the assembly labor intensity and saving time, significantly improving the assembly efficiency of the compressor; at the same time, it also makes the structure of the compressor simple and the cost low, facilitating subsequent maintenance, and is suitable for large-scale popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0024] Figure 1 shows a schematic internal structure diagram of a scroll compressor provided by an embodiment of the present utility model;

[0025] Figure 2 shows a partial structure diagram of a scroll compressor provided by an embodiment of the present utility model;

[0026] Figure 3 shows a schematic internal structure diagram of the bearing housing provided by an embodiment of the present utility model;

[0027] Figure 4 shows a partial structure diagram of the bearing housing from a top view angle provided by an embodiment of the present utility model.

[0028] Among them, the above-mentioned drawings include the following reference numerals:

[0029] 10. Bearing housing; 11. Accommodating cavity; 111. First accommodating cavity; 112. Second accommodating cavity; 12. Bearing mounting hole; 13. Medium inlet; 14. Protrusion; 141. Groove; 142. Flow hole;

[0030] 20. Compressor bearing;

[0031] 30. Motor component;

[0032] 40. Crankshaft component;

[0033] 50. Movable disk component;

[0034] 60. Static disk component;

[0035] 70. Front end cover;

[0036] 80. Rear end cover. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] As Figures 1 to 4 shown, the embodiment of the present invention provides a compressor housing structure, including a bearing housing 10. The bearing housing 10 has an accommodating cavity 11 and a bearing mounting hole 12 that communicate with each other inside. The accommodating cavity 11 is used to accommodate other components of the compressor. The bearing mounting hole 12 is used to mount and position the compressor bearing 20. The working medium carrying lubricating oil flows through the accommodating cavity 11 and the bearing mounting hole 12. At this time, the path through which the working medium flows is the first flow path. Among them, the working medium has one or more flow paths in the bearing housing 10. Under the condition that the flow path of the working medium is one, this flow path is the first flow path. Under the condition that the flow path of the working medium is multiple, the multiple flow paths include the first flow path, and the flow rate of the first flow path is the largest.

[0039] The utility model enables the lubricating oil in the working medium carrying the lubricating oil to effectively flow to the compressor bearing 20 by arranging the working medium carrying the lubricating oil to flow through the accommodating cavity 11 and the bearing mounting hole 12, realizes reliable lubrication and cooling of the compressor bearing 20, and solves the problem of poor lubrication effect of the internal bearing of the compressor in the prior art; by setting the flow rate of the first flow path to be the largest, under the condition of multiple flow paths, it is ensured that the flow rate of the lubricating oil flowing to the compressor bearing 20 is sufficient, so that the compressor bearing 20 is fully lubricated, and the working reliability and service life are ensured; the compressor housing structure proposed by the utility model is simple in structure and reliable in operation; in actual production, it is found that for the compressor using the compressor housing structure proposed by the utility model, the overall number of parts is small, the assembly process flow of the compressor is simple, the assembly labor intensity is reduced and time is saved, so that the assembly efficiency of the compressor is significantly improved; at the same time, the structure of the compressor is also simple and the cost is low, which is convenient for subsequent maintenance and suitable for large-scale popularization and use.

[0040] It should be noted that: in a specific embodiment of the utility model, other components of the compressor accommodated in the accommodating cavity 11 include a motor component 30, a crankshaft component 40, a moving disk component 50 and a static disk component 60. The motor component 30 is drivingly connected to the crankshaft component 40 and is used to drive the crankshaft component 40 to rotate; the moving disk component 50 is arranged on the crankshaft component 40 to rotate with the crankshaft component 40; the moving disk component 50 cooperates with the static disk component 60; wherein, the crankshaft component 40 passes through the compressor bearing 20 and cooperates with the compressor bearing 20.

[0041] As Figure 1 、 Figure 2 and Figure 3 shown, the bearing housing 10 further has a medium inlet 13 and a medium outlet. The medium inlet 13 and the medium outlet are respectively communicated with the accommodating cavity 11; in the first flow path, the working medium carrying the lubricating oil enters from the medium inlet 13, flows through the accommodating cavity 11 and the bearing mounting hole 12, and flows out from the medium outlet; the working medium has a unique flow path in the accommodating cavity 11, and this flow path is the first flow path, so that the working medium carrying the lubricating oil all flows through the compressor bearing 20.

[0042] By setting that the working medium has a unique flow path in the accommodating cavity 11, and this flow path is the first flow path, the working medium carrying the lubricating oil all flows through the compressor bearing 20, thus maximizing the lubrication of the compressor bearing 20.

[0043] In a specific embodiment of the present utility model, by flexibly setting the flow rate of the first flow path, the filling amount of lubricating oil in the compressor bearing 20 is 1 / 3 to 1 / 2 of the internal space of the compressor bearing 20; this can not only avoid the rotation lag and overheating of the compressor bearing 20 caused by excessive lubricating oil, but also avoid insufficient lubrication caused by too little lubricating oil.

[0044] As Figure 1 , Figure 2 and Figure 3 shown, the accommodating cavity 11 includes a first accommodating cavity 111 and a second accommodating cavity 112, and the first accommodating cavity 111 and the second accommodating cavity 112 are communicated through a bearing mounting hole 12; the medium inlet 13 is communicated with the first accommodating cavity 111, and the medium outlet is communicated with the second accommodating cavity 112; in the first flow path, the working medium carrying lubricating oil enters the first accommodating cavity 111 from the medium inlet 13, flows through the bearing mounting hole 12 into the second accommodating cavity 112, and the second accommodating cavity 112 is used to accommodate the compression structure of the compressor. The working medium is compressed in the second accommodating cavity 112 and then flows out from the medium outlet.

[0045] By setting the first accommodating cavity 111 and the second accommodating cavity 112, different components in the compressor can be respectively installed in corresponding positions according to different divisions of labor, and the compression position of the working medium and the conventional flow position are arranged in a partitioned manner, thereby ensuring the reliable compression of the working medium by the compressor.

[0046] As Figure 3 shown, the bearing housing 10 is an integral housing structure.

[0047] By setting the bearing housing 10 as an integral structure, it is not only convenient for the processing and forming of the bearing housing 10, eliminating the subsequent assembly of the bearing housing 10 itself, but also improves the overall strength and stiffness of the bearing housing 10.

[0048] As Figure 1 , Figure 2 and Figure 3 shown, the bearing housing 10 further has a protruding portion 14 inside, and the protruding portion 14 is used to carry the compressor bearing 20; wherein, as Figure 4 shown, the protruding portion 14 has a groove 141 and a bearing mounting hole 12, and the groove 141 is respectively communicated with the bearing mounting hole 12 and the accommodating cavity 11, and is communicated with the inside and the outer periphery of the compressor bearing 20.

[0049] By setting the protruding portion 14, the compressor bearing 20 can be reliably carried; by setting the groove 141, it is not only convenient for a certain amount of lubricating oil to be deposited in the groove 141, thereby continuously lubricating the compressor bearing 20, but also effectively increases the flow area of the working medium, thereby ensuring the reliable flow of the working medium.

[0050] As shown Figure 4 in Figure 4 , there are multiple grooves 141. The multiple grooves 141 are circumferentially and evenly spaced along the circumference of the bearing mounting hole 12, and the grooves 141 extend radially along the bearing mounting hole 12.

[0051] By providing multiple grooves 141, the flow area of the working medium is further increased, ensuring a large flow rate of the working medium.

[0052] As shown Figure 4 in Figure 4 , the groove 141 is a square groove. The central axes of the multiple square grooves extending radially along the bearing mounting hole 12 intersect at the center of the cross-section of the bearing mounting hole 12; the multiple square grooves are equidistantly spaced along the circumference of the bearing mounting hole 12.

[0053] By providing the groove 141 as a square groove, it is convenient for the machining and forming of the groove 141; by providing the multiple square grooves equidistantly spaced along the circumference of the bearing mounting hole 12, not only the overall center of gravity of the protruding part 14 is stabilized on the central axis, which is beneficial to maintaining balance, but also the working medium is more uniform and stable during circulation, avoiding the occurrence of turbulent flow.

[0054] As shown Figure 1 , Figure 2 and Figure 3 in Figure 3 , the accommodation cavity 11 includes a first accommodation cavity 111 and a second accommodation cavity 112. The first accommodation cavity 111 and the second accommodation cavity 112 are connected through the bearing mounting hole 12; in the first flow path, the working medium carrying lubricating oil first enters the first accommodation cavity 111, and after flowing through the bearing mounting hole 12 and the compressor bearing 20, at least a part of the working medium enters the groove 141, passes through the groove 141 and enters the second accommodation cavity 112. The second accommodation cavity 112 is used to accommodate the compression structure of the compressor, and the working medium is compressed in the second accommodation cavity 112.

[0055] This setting enables the working medium carrying lubricating oil in the first flow path to not only reliably lubricate the compressor bearing 20 but also be reliably compressed and circulated.

[0056] As shown Figure 1 , Figure 2 and Figure 3 in Figure 3 , the protruding part 14 also has a circulation hole 142. The circulation hole 142 is respectively connected to the bearing mounting hole 12 and the first accommodation cavity 111, and the aperture of the circulation hole 142 is smaller than the aperture of the bearing mounting hole 12; in the first flow path, the working medium carrying lubricating oil first enters the first accommodation cavity 111 and enters the bearing mounting hole 12 through the circulation hole 142.

[0057] By setting the aperture diameter of the flow hole 142 to be smaller than that of the bearing mounting hole 12, it is not only convenient for the subsequent installation of the crankshaft component 40, but also increases the flow rate of the working medium entering the bearing mounting hole 12 through the flow hole 142, ensuring the smooth flow of the working medium.

[0058] In addition, it is worth noting that since the flow path of the working medium in the scroll compressor affects the lubrication of the compressor bearing 20, when designing the flow hole 142, the flow path of the working medium needs to be considered to ensure that the lubricating oil can reach the inner surface and / or outer surface of the compressor bearing 20 smoothly; in a specific embodiment of the present invention, by setting the specific size and inner wall shape of the flow hole 142, the working medium is prevented from directly impacting the outer ring of the compressor bearing 20 to reduce the wear of the outer ring.

[0059] Specifically, the compressor housing structure further includes a filter screen, which is fixedly arranged in the flow hole 142 or the bearing mounting hole 12 and is located between the compressor bearing 20 and the first accommodation cavity 111, for filtering the lubricating oil about to flow to the position of the compressor bearing 20.

[0060] By arranging the filter screen at the front end of the bearing mounting hole 12, while ensuring the passage of the working medium, the fine impurities in the lubricating oil are effectively filtered, further improving the reliability of the bearing use.

[0061] Optionally, the compressor housing structure further includes a filter screen, which is arranged on the first flow path for filtering the lubricating oil.

[0062] By arranging the filter screen, while ensuring the passage of the working medium, the fine impurities in the lubricating oil are effectively filtered, avoiding the adverse effects of the impurities on the compressor bearing 20.

[0063] The present invention also provides a compressor, which includes the above-mentioned compressor housing structure; the compressor further includes a compressor bearing 20, and the compressor bearing 20 is arranged in the bearing mounting hole 12 and is in limit fit with the inner wall of the bearing mounting hole 12.

[0064] For the compressor proposed by the present invention, the compressor bearing 20 inside it can obtain sufficient lubrication during the flow of the working medium, thereby improving the performance and service life of the compressor. In addition, the overall structure of the compressor is simple, the number of parts is reduced, the assembly process flow of the compressor is reduced, the labor cost is reduced, time is saved, and the production efficiency is improved.

[0065] In a specific embodiment of the present invention, a fluid groove can be arranged on the inner ring of the compressor bearing 20, and the fluid groove is used for depositing and storing the lubricating oil and guiding the lubricating oil to the position inside the compressor bearing 20 that needs lubrication.

[0066] In a specific embodiment of the present utility model, the compressor bearing 20 can also adopt the following types of bearings:

[0067] 1. Deep Groove Ball Bearings; this type of bearing has a strong load-bearing capacity and is suitable for bearing radial loads and small axial loads; the rolling elements inside are spheres, and there are deep grooves on the inner and outer rings of the bearing; the deep groove ball bearing has a simple structure and low cost, and is a common type of rolling bearing on scroll compressors;

[0068] 2. Self-aligning Ball Bearings; self-aligning ball bearings are suitable for bearing radial loads and axial loads in two directions; the rolling elements inside are also spheres, but the inner ring is a double raceway and has a self-aligning function, which can adapt to small deviations between the shaft and the housing;

[0069] 3. Tapered Roller Bearings; this type of bearing is suitable for bearing radial loads and large axial loads; the rolling elements inside are tapered rollers, and there are tapered raceways on the inner and outer rings; tapered roller bearings can be used in occasions where large loads need to be borne;

[0070] 4. Thrust Ball Bearings; this type of bearing is mainly used to bear axial loads; the rolling elements inside are spheres, and there are flat raceways on the inner and outer rings. Thrust ball bearings can be used in occasions where axial loads need to be borne.

[0071] The present utility model also provides a scroll compressor, which includes the above-mentioned compressor housing structure; the scroll compressor also includes a compressor bearing 20, and the compressor bearing 20 is arranged in the bearing mounting hole 12 and is in limit fit with the inner wall of the bearing mounting hole 12.

[0072] The scroll compressor proposed by the present utility model has the advantages of simple structure, stable operation, low noise, high efficiency, high reliability, etc.; these advantages enable the scroll compressor to be widely used in many application fields; for example: the scroll compressor proposed by the present utility model can be applied to fields such as refrigeration, air conditioning, air separation, gas transmission, vacuum pumps, etc.; it can compress various gases such as air, nitrogen, oxygen, carbon dioxide, etc.

[0073] The utility model effectively integrates the inner bracket of the scroll compressor (the structure for supporting the compressor bearing 20 and the crankshaft component 40) and the housing into an integral structure by designing the integral bearing housing 10, optimizing the suction channel of the housing, enabling all the working medium of the compressor to pass through the compressor bearing 20, and the lubricating oil droplets or mist in the working medium to lubricate the compressor bearing 20, so that the compressor bearing 20 is fully lubricated.

[0074] It should be noted that in a scroll compressor, the lubrication of the compressor bearing 20 is crucial for ensuring the normal operation of the equipment and extending its service life. In a specific embodiment of the present utility model, the lubrication of the compressor bearing 20 is not limited to the lubricating oil carried by the working medium, and can also be mixed in the following ways. For example, the compressor bearing 20 can also adopt oil bath lubrication, grease lubrication, direct injection lubrication, etc. The mixed lubrication method depends on factors such as the working conditions, load, and rotational speed of the scroll compressor.

[0075] In a specific embodiment of the present utility model, an appropriate lubricating oil can be selected according to the usage requirements, bearing type, and working scenario of the compressor bearing 20. For example, the lubricating oil can be mineral oil, synthetic oil, or semi-synthetic oil, so that the performance such as viscosity, antioxidant property, anti-wear property, and thermal stability of the selected lubricating oil meets the actual usage requirements.

[0076] As Figure 1 and Figure 2 shown, the scroll compressor further includes a motor component 30, a crankshaft component 40, a moving disk component 50, and a stationary disk component 60. The motor component 30 is drivingly connected to the crankshaft component 40 to drive the crankshaft component 40 to rotate. The moving disk component 50 is arranged on the crankshaft component 40 to rotate with the crankshaft component 40. The moving disk component 50 cooperates with the stationary disk component 60. Among them, the crankshaft component 40 passes through the compressor bearing 20 and cooperates with the compressor bearing 20.

[0077] This setting not only ensures the working reliability of the scroll compressor but also simplifies the overall structure of the scroll compressor, facilitating subsequent disassembly, assembly, and maintenance.

[0078] It should be noted that in a specific embodiment of the present utility model, the scroll compressor proposed by the present utility model is a mechanical device that uses a spiral rotor for gas compression, and can be applied to fields such as refrigeration, air conditioning, and air separation. The working principle and basic structure of the scroll compressor proposed by the present utility model are as follows:

[0079] 1. Structural Composition; The scroll compressor mainly consists of two spiral rotors (i.e., a moving disk component 50 and a stationary disk component 60), a bearing housing 10, compressor bearings 20, sealing rings, etc.; The moving disk component 50 and the stationary disk component 60 are usually meshed with each other, and their spiral shapes are similar to propellers;

[0080] 2. Working Principle; When the scroll compressor is working, the moving disk component 50 and the stationary disk component 60 make relative movements within the housing. The moving disk component 50 is driven by the motor component 30 (e.g., a driving motor), and the stationary disk component 60 is driven through the meshing of the moving disk component 50; During the suction process, after the crankshaft component 40 starts to rotate, the spiral teeth of the moving disk component 50 and the stationary disk component 60 mesh with each other to form sealed cavities. These sealed cavities gradually increase as the crankshaft component 40 rotates, thereby reducing the pressure within the sealed cavities and sucking in the working medium; During the compression process, as the crankshaft component 40 continues to rotate, the sealed cavities gradually become smaller, and the working medium (e.g., a gas medium) is compressed, and the pressure within the sealed cavities gradually increases. During this process, the spiral teeth of the moving disk component 50 and the stationary disk component 60 always remain in contact to ensure that the working medium does not leak during the compression process; During the exhaust process, when the sealed cavity reaches the minimum volume, the working medium is compressed to the highest pressure. At this time, the sealed cavity discharges the compressed working medium through the medium outlet, and the exhaust process is usually controlled by an exhaust valve provided at the medium outlet to maintain the stable operation of the scroll compressor; According to the above process for cycling, the crankshaft component 40 continuously rotates, and new working medium is sucked in again to start a new round of compression process.

[0081] As Figure 1 and Figure 2 shown, the bearing housing 10 also has a medium inlet 13 and a medium outlet; The accommodation cavity 11 includes a first accommodation cavity 111 and a second accommodation cavity 112, and the first accommodation cavity 111 and the second accommodation cavity 112 are connected through a bearing mounting hole 12; The medium inlet 13 is connected to the first accommodation cavity 111, and the medium outlet is connected to the second accommodation cavity 112; The motor component 30 is arranged within the first accommodation cavity 111; The moving disk component 50 and the stationary disk component 60 are respectively arranged within the second accommodation cavity 112; In the first flow path, the working medium carrying lubricating oil enters the first accommodation cavity 111 from the medium inlet 13, flows through the motor component 30, the bearing mounting hole 12, and the compressor bearings 20 and then enters the second accommodation cavity 112. The moving disk component 50 and the stationary disk component 60 compress the working medium within the second accommodation cavity 112, and the compressed working medium flows out from the medium outlet.

[0082] This setting enables the moving disk component 50 and the stationary disk component 60 to cooperate reliably within the second accommodation cavity 112, and thus can efficiently compress the working medium within the second accommodation cavity 112.

[0083] AsFigure 1 and Figure 2 As shown in Figure 2 , the scroll compressor further includes a front end cover 70 and a rear end cover 80. The front end cover 70 is detachably disposed at one end of the bearing housing 10 close to the second accommodation cavity 112 for sealing the second accommodation cavity 112; the rear end cover 80 is detachably disposed at one end of the bearing housing 10 close to the first accommodation cavity 111 for sealing the first accommodation cavity 111; wherein, the second accommodation cavity 112 envelopes the outer periphery of the stationary scroll member 60.

[0084] By providing the front end cover 70 and the rear end cover 80, reliable sealing of the second accommodation cavity 112 and the first accommodation cavity 111 is achieved; by providing the second accommodation cavity 112 to envelope the outer periphery of the stationary scroll member 60, the scroll compressor does not need to provide an additional structure to envelope the stationary scroll member 60, thus simplifying the structure.

[0085] In a specific embodiment of the present invention, the scroll compressor further includes a temperature sensor. The temperature sensor detects the temperature of the lubricating oil by detecting the temperature of the working medium; since the temperature of the lubricating oil has a great influence on the lubrication effect of the compressor bearing 20, it is necessary to monitor the temperature of the lubricating oil in real time to avoid problems such as oxidation of the lubricating oil, reduction of viscosity, and reduction of lubrication effect caused by the lubricating oil at too high a temperature.

[0086] Optionally, the compressor bearing 20 is a rolling bearing; in the first flow path, the working medium carrying the lubricating oil flows through the inner ring of the rolling bearing to lubricate the rolling bearing with the lubricating oil.

[0087] It should be noted that: in a specific embodiment of the present invention, the working principle and basic structure of the rolling bearing in the present invention are as follows:

[0088] The basic structure includes: 1. Rolling elements; the rolling bearing is mainly composed of rolling elements such as spheres or rollers. These rolling elements roll between the inner and outer rings of the bearing, playing a role in reducing friction and supporting the load; 2. Inner ring and outer ring; the inner ring of the rolling bearing is fixed on the shaft of the crankshaft member 40, and the outer ring is fixed on the bearing mounting hole 12; the raceways on the inner and outer rings cooperate with the rolling elements to form rolling friction; 3. Cage; the cage is used to support and guide the rolling elements to roll correctly on the raceways.

[0089] The working principle includes: 1. Working process; when the bearing rotates, the rolling elements roll on the raceways of the inner and outer rings, transmitting the externally applied load to the bearing; 2. Lubrication process; the working medium carrying the lubricating oil flows through the rolling bearing, and the lubricating oil enters the interior of the bearing to maintain lubrication between the rolling elements and the raceways; the rolling friction of the rolling elements is much smaller than the sliding friction, so the rolling bearing has a lower friction coefficient and higher efficiency; in the scroll compressor, the rolling bearing can support the rotation of the crankshaft member 40, reduce friction, improve the operating efficiency, and extend the service life of the equipment.

[0090] The specific working process and principle of the present utility model will be described in detail as follows:

[0091] As Figure 1 , Figure 2 and Figure 3 shown, a protruding portion 14 is designed in the middle part inside the bearing housing 10 for supporting the moving disk member 50 and the stationary disk member 60. The protruding portion 14 divides the bearing housing 10 into upper and lower parts. Figure 4 For Figure 3 the structural schematic diagram from a top view angle, as Figure 4 shown, a plurality of grooves 141, a bearing mounting hole 12 and a circulation hole 142 are provided on the protruding portion 14; a medium inlet 13 is provided at the lower end (the end close to the rear end cover 80) of the bearing housing 10; the protruding portion 14 in the middle of the bearing housing 10 can be used as a support body to support the crankshaft member 40, the moving disk member 50 and the stationary disk member 60 (for example: the moving scroll and the stationary scroll). The bearing housing 10 is an integral housing structure and does not require other parts for assembly, thereby reducing the number of parts required for the overall scroll compressor, shortening the processing and assembly process of the compressor, saving labor and time costs, and improving the production efficiency of the compressor.

[0092] As Figure 2 shown, when the moving disk member 50 and the stationary disk member 60 are working, the working medium is sucked in from the medium inlet 13, passes through the motor member 30 (for example: the motor), and then flows through the compressor bearing 20 in the protruding portion 14 of the housing, and then enters the compression chamber formed between the moving disk member 50 and the stationary disk member 60. After compression, it is discharged from the medium outlet of the rear end cover 80; as Figure 2 shown, due to the special design of the structure of the bearing housing 10, the working medium of the compressor can only flow along a specific and unique first circulation path. The working medium enters from the medium inlet 13, passes through the first accommodation chamber 111, then flows through the bearing mounting hole 12, and enters the compression chamber formed between the moving disk member 50 and the stationary disk member 60 from the four grooves 141 on the protruding portion 14 for compression; the lubricating oil droplets carried in the working medium will lubricate the compressor bearing 20 when passing through the compressor bearing 20. Due to the special design of the structure of the bearing housing 10, the working medium can only flow through the compressor bearing 20, which increases the flow rate of the working medium flowing through the compressor bearing 20, and also increases the lubricating oil flow rate at the compressor bearing 20, enabling the compressor bearing 20 to be more fully lubricated, reducing the risk of damage to the compressor bearing 20 due to poor lubrication, reducing the failure rate of the compressor, and indirectly improving the product quality of the compressor.

[0093] In summary, the present utility model provides a compressor housing structure, a compressor, and a scroll compressor. By arranging the working medium carrying lubricating oil to flow through the accommodation cavity 11 and the bearing mounting hole 12, the lubricating oil in the working medium can effectively flow to the compressor bearing 20, achieving reliable lubrication and cooling of the compressor bearing 20, and solving the problem of poor lubrication effect of the internal bearing of the compressor in the prior art; by setting the flow rate of the first flow path to be the largest, under the condition of multiple flow paths, it is ensured that the flow rate of the lubricating oil flowing to the compressor bearing 20 is sufficient, so that the compressor bearing 20 is fully lubricated, ensuring the working reliability and service life; the compressor housing structure proposed by the present utility model is simple in structure and reliable in operation; in actual production, it is found that the compressor using the compressor housing structure proposed by the present utility model has fewer overall parts, a simple assembly process flow for the compressor, reduces the assembly labor intensity and saves time, significantly improving the assembly efficiency of the compressor; at the same time, it also makes the structure of the compressor simple and the cost low, facilitating subsequent maintenance, and is suitable for large-scale popularization and use.

[0094] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0095] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0096] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0097] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0098] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0099] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A compressor housing structure, characterized in that: The invention comprises a bearing shell (10), wherein the bearing shell (10) has a receiving cavity (11) and a bearing mounting hole (12) which are interconnected; the receiving cavity (11) is used to receive other components of the compressor; the bearing mounting hole (12) is used to mount and limit the compressor bearing (20); a working medium carrying lubricating oil flows through the receiving cavity (11) and the bearing mounting hole (12), and at this time, the path through which the working medium flows is a first flow path; wherein the working medium has one or more flow paths in the bearing shell (10); when the working medium has one flow path, the flow path is the first flow path; when the working medium has multiple flow paths, the multiple flow paths include the first flow path, and the flow rate of the first flow path is the largest.

2. The compressor housing structure according to claim 1, characterized in that: The bearing housing (10) further comprises a medium inlet (13) and a medium outlet, wherein the medium inlet (13) and the medium outlet are respectively connected to the accommodating cavity (11); in the first flow path, the working medium carrying the lubricating oil enters from the medium inlet (13), flows through the accommodating cavity (11) and the bearing mounting hole (12), and flows out from the medium outlet; the working medium has a single flow path in the accommodating cavity (11), and the flow path is the first flow path, so that the working medium carrying the lubricating oil flows entirely through the compressor bearing (20).

3. The compressor housing structure according to claim 2, characterized in that: The accommodating cavity (11) comprises a first accommodating cavity (111) and a second accommodating cavity (112); the first accommodating cavity (111) and the second accommodating cavity (112) are connected via the bearing mounting hole (12); the medium inlet (13) is connected to the first accommodating cavity (111), and the medium outlet is connected to the second accommodating cavity (112); in the first flow path, the working medium carrying the lubricating oil enters the first accommodating cavity (111) from the medium inlet (13), flows through the bearing mounting hole (12), and enters the second accommodating cavity (112); the second accommodating cavity (112) is used to accommodate the compression structure of the compressor; the working medium is compressed in the second accommodating cavity (112), and then flows out from the medium outlet.

4. The compressor housing structure according to claim 1, characterized in that: The bearing shell (10) is an integrated shell structure.

5. The compressor housing structure according to claim 1, characterized in that: The bearing housing (10) further comprises a protrusion (14) inside, and the protrusion (14) is used to carry the compressor bearing (20); wherein the protrusion (14) comprises a groove (141) and the bearing mounting hole (12), and the groove (141) is respectively connected to the bearing mounting hole (12) and the accommodating cavity (11), and is also connected to the inside and the periphery of the compressor bearing (20).

6. The compressor housing structure according to claim 5, characterized in that: There are a plurality of grooves (141), the plurality of grooves (141) are spaced apart along the circumference of the bearing mounting hole (12), and the grooves (141) extend along the radial direction of the bearing mounting hole (12).

7. The compressor housing structure according to claim 6, characterized in that: The groove (141) is a square groove, and the central axes of the plurality of square grooves extending radially along the bearing mounting hole (12) intersect at the cross-sectional center of the bearing mounting hole (12); the plurality of square grooves are distributed at equal intervals along the circumference of the bearing mounting hole (12).

8. The compressor housing structure according to claim 5, characterized in that: The accommodating cavity (11) comprises a first accommodating cavity (111) and a second accommodating cavity (112), wherein the first accommodating cavity (111) and the second accommodating cavity (112) are connected via the bearing mounting hole (12); in the first flow path, the working medium carrying the lubricating oil first enters the first accommodating cavity (111), and after flowing through the bearing mounting hole (12) and the compressor bearing (20), at least a portion of the working medium enters the groove (141), and enters the second accommodating cavity (112) through the groove (141); the second accommodating cavity (112) is used to accommodate a compression structure of a compressor, and the working medium is compressed in the second accommodating cavity (112).

9. The compressor housing structure according to claim 8, characterized in that: The protruding portion (14) also has a circulation hole (142), and the circulation hole (142) is respectively connected to the bearing mounting hole (12) and the first accommodating cavity (111), and the aperture of the circulation hole (142) is smaller than the aperture of the bearing mounting hole (12); in the first circulation path, the working medium carrying the lubricating oil first enters the first accommodating cavity (111), and then enters the bearing mounting hole (12) through the circulation hole (142).

10. The compressor housing structure according to claim 9, characterized in that: The compressor housing structure also includes a filter screen, which is fixedly arranged in the circulation hole (142) or the bearing mounting hole (12) and is located between the compressor bearing (20) and the first accommodating cavity (111), and is used for filtering the lubricating oil that is about to flow to the position of the compressor bearing (20).

11. The compressor housing structure according to claim 1, characterized in that: The compressor housing structure further includes a filter screen, which is disposed on the first flow path and is used to filter the lubricating oil.

12. A compressor, characterized in that: The compressor comprises a compressor housing structure as described in any one of claims 1 to 11; the compressor also comprises a compressor bearing (20), the compressor bearing (20) is arranged in the bearing mounting hole (12) and is limitedly matched with the inner wall of the bearing mounting hole (12).

13. A scroll compressor, characterized in that: The scroll compressor comprises a compressor housing structure as described in any one of claims 1 to 11; the scroll compressor also comprises a compressor bearing (20), the compressor bearing (20) is arranged in the bearing mounting hole (12) and is limitedly matched with the inner wall of the bearing mounting hole (12).

14. The scroll compressor according to claim 13, characterized in that: The scroll compressor further comprises a motor component (30), a crankshaft component (40), a moving disk component (50) and a stationary disk component (60); the motor component (30) is drivingly connected to the crankshaft component (40) for driving the crankshaft component (40) to rotate; the moving disk component (50) is arranged on the crankshaft component (40) to rotate along with the crankshaft component (40); the moving disk component (50) cooperates with the stationary disk component (60); wherein the crankshaft component (40) passes through the compressor bearing (20) and cooperates with the compressor bearing (20).

15. The scroll compressor according to claim 14, characterized in that: The bearing housing (10) further comprises a medium inlet (13) and a medium outlet; the accommodating cavity (11) comprises a first accommodating cavity (111) and a second accommodating cavity (112), the first accommodating cavity (111) and the second accommodating cavity (112) being connected via the bearing mounting hole (12); the medium inlet (13) is connected to the first accommodating cavity (111), and the medium outlet is connected to the second accommodating cavity (112); the motor component (30) is arranged in the first accommodating cavity (111); the moving disk component (50) and the static disk component (50) are connected to each other. The components (60) are respectively arranged in the second accommodating chamber (112); in the first flow path, the working medium carrying the lubricating oil enters the first accommodating chamber (111) from the medium inlet (13), flows through the motor component (30), the bearing mounting hole (12), and the compressor bearing (20), and then enters the second accommodating chamber (112); the moving disk component (50) and the stationary disk component (60) compress the working medium in the second accommodating chamber (112), and the compressed working medium flows out from the medium outlet.

16. The scroll compressor according to claim 15, characterized in that: The scroll compressor also includes a front cover (70) and a rear cover (80), wherein the front cover (70) is detachably disposed at one end of the bearing shell (10) close to the second accommodating chamber (112) for sealing the second accommodating chamber (112); the rear cover (80) is detachably disposed at one end of the bearing shell (10) close to the first accommodating chamber (111) for sealing the first accommodating chamber (111); wherein the second accommodating chamber (112) envelops the outer periphery of the stator disk component (60).

17. The scroll compressor according to claim 13, characterized in that: The compressor bearing (20) is a rolling bearing; in the first flow path, the working medium carrying the lubricating oil flows through the inner ring of the rolling bearing so that the lubricating oil lubricates the rolling bearing.

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