Pump body structure, compressor and refrigeration equipment

Abstract

This application relates to the field of refrigeration equipment technology, and in particular to a pump body structure, a compressor, and refrigeration equipment. The pump body structure includes a bearing and a cylinder assembly. The bearing includes an upper bearing and a lower bearing disposed opposite to each other on both sides of the cylinder assembly. One bearing has an oil plug hole arranged radially along the bearing, with one end communicating with the outside and the other end communicating with a bearing mounting hole inside the bearing. An oil plug is disposed within the oil plug hole. An oil drain hole is also provided inside the bearing. One end of the oil drain hole communicates with the oil plug hole between the bearing mounting hole and the oil plug, and the other end matches the radial end face of the piston in the cylinder assembly. The radial end face of the piston is always opposite to the oil drain hole during movement. This application, by providing an oil plug hole and an oil drain hole on the bearing, allows lubricating oil to enter the bearing through the oil plug hole and be guided to the piston end face through the oil drain hole, achieving effective lubrication of the piston and improving the operating efficiency and service life of the compressor.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and in particular to a pump body structure, compressor and refrigeration equipment. Background Technology

[0002] With the continuous development of refrigeration technology, rotary compressors have been widely used in refrigeration equipment such as air conditioners and refrigerators due to their advantages of compact structure, stable operation, and high efficiency. In rotary compressors, the pump body is the core component, and its performance directly affects the compressor's working efficiency and service life.

[0003] Currently, the common rotary compressor pump body structure typically includes components such as bearings, cylinder assemblies, and pistons. Bearings generally include upper and lower bearings, respectively located on both sides of the cylinder assembly, to support the rotation of the crankshaft. The cylinder assembly includes a cylinder and a piston; the piston reciprocates within the cylinder, completing the refrigerant compression process.

[0004] The existing pump body structure still has the following technical problems:

[0005] First, wear easily occurs between the piston and bearing end faces during the operation of a rotary compressor. Especially under insufficient lubrication, friction between the piston and the upper and lower bearings intensifies, leading to accelerated component wear and shortening the compressor's lifespan. Although various oil guide channels are incorporated into existing technologies, the lubrication effect between the piston and bearing end faces is still not ideal, particularly under high-speed operation or high-load conditions, where lubricating oil is difficult to effectively deliver to the contact surfaces of the piston and bearing.

[0006] Secondly, the clearance between the piston and cylinder directly affects the volumetric efficiency of the compressor. An excessively large clearance can lead to refrigerant leakage and reduced volumetric efficiency; while an excessively small clearance can increase friction between the piston and cylinder, accelerating wear. Current lubrication systems struggle to effectively control the clearance between the piston and cylinder while ensuring adequate lubrication, thus impacting the overall performance of the compressor.

[0007] Therefore, there is an urgent need for an improved pump body structure that can effectively solve the wear problem between the piston and the bearing end face, while optimizing the clearance between the piston and the cylinder, thereby improving the volumetric efficiency and service life of the compressor. Summary of the Invention

[0008] In view of this, this application provides a pump body structure, a compressor, and a refrigeration device to solve the problem of wear on the piston and bearing end faces of existing rotary compressors due to insufficient lubrication, and the problem of low volumetric efficiency caused by large clearance between the piston and cylinder.

[0009] A first aspect of the present application provides a pump body structure, which includes a bearing and a cylinder assembly;

[0010] The bearing includes an upper bearing and a lower bearing, which are disposed opposite to each other on both sides of the cylinder assembly. One of the upper bearing and the lower bearing is provided with an oil plug hole, which is arranged along the radial direction of the bearing. One end of the oil plug hole is connected to the outside, and the other end of the oil plug hole is connected to the bearing mounting hole inside the bearing. An oil plug for sealing the oil plug hole is provided at a predetermined position inside the oil plug hole.

[0011] The bearing is also provided with an oil drain hole. One end of the oil drain hole is connected to the oil plug hole between the bearing mounting hole and the oil plug. The other end of the oil drain hole matches the radial end face of the piston in the cylinder assembly, and the radial end face of the piston is always opposite to the oil drain hole when it moves.

[0012] In some embodiments, the oil plug orifice includes a high-pressure drain section and an oil plug section;

[0013] Both ends of the high-pressure diversion section are connected to the oil guide groove of the bearing mounting hole and the oil plug section, respectively, wherein the oil drain hole is connected to the high-pressure diversion section.

[0014] In some embodiments, there is a step structure between the high-pressure drain section and the oil plug section;

[0015] Wherein, the inner diameter D2 of the oil plug section is larger than the inner diameter D1 of the high-pressure drain section, and the oil plug is sealed at the step structure.

[0016] In some embodiments, the diameter of the oil drain hole is d1, the distance from the center of the oil drain hole diameter to the center of the bearing mounting hole diameter is a first distance L1, and the distance from the oil plug sealing position to the center of the bearing mounting hole diameter is a second distance L2.

[0017] Where L2 > L1 + d1 / 2.

[0018] In some embodiments, the bearing mounting hole is used to mount a crankshaft, the crankshaft having an eccentricity of e;

[0019] The outer diameter of the piston is D;

[0020] Where L1+d1 / 2<D / 2-e.

[0021] In some embodiments, the cylinder assembly further includes a cylinder, wherein the piston is disposed within the cylinder;

[0022] Along the height direction of the pump body structure, the height of the cylinder is H1, and the height of the piston is H2, wherein H2 is less than or equal to H1.

[0023] In some embodiments, the oil drain hole and the oil plug hole are arranged perpendicular to each other;

[0024] or,

[0025] The axis of the oil drain hole is set at a predetermined angle to the axis of the oil plug hole, and the acute angle of the predetermined angle is in the range of 30° to 89°.

[0026] In some embodiments, both the upper bearing and the lower bearing are provided with the oil plug hole.

[0027] A second aspect of the present application provides a compressor that includes the pump body structure described in the first aspect;

[0028] The compressor is a rotary compressor.

[0029] A third aspect of this application provides a refrigeration device, which includes the compressor described in the second aspect.

[0030] Compared with the prior art, the main advantages of this application are:

[0031] In the pump body structure, compressor, and refrigeration equipment disclosed in this application, the pump body structure includes a bearing and a cylinder assembly. The bearing includes an upper bearing and a lower bearing disposed opposite to each other on both sides of the cylinder assembly. One bearing has an oil plug hole arranged radially along the bearing, with one end communicating with the outside and the other end communicating with a bearing mounting hole inside the bearing. An oil plug is disposed within the oil plug hole. An oil drain hole is also provided inside the bearing. One end of the oil drain hole communicates with the oil plug hole between the bearing mounting hole and the oil plug, and the other end matches the radial end face of the piston in the cylinder assembly. The radial end face of the piston is always opposite to the oil drain hole during movement. By providing an oil plug hole and an oil drain hole on the bearing, this application allows lubricating oil to enter the bearing through the oil plug hole and be guided to the piston end face through the oil drain hole, achieving effective lubrication of the piston and improving the operating efficiency and service life of the compressor. Attached Figure Description

[0032] To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0033] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0034] Figure 1 This is a schematic diagram of a pump body structure according to one embodiment of this application;

[0035] Figure 2 This is a top view of a pump body structure according to an embodiment of this application;

[0036] Figure 3 yes Figure 2 A cross-sectional view at position AA in the middle;

[0037] Figure 4 This is a structural view of the piston in a pump body structure according to an embodiment of this application;

[0038] Figure 5 yes Figure 4 Top view;

[0039] Figure 6 This is a schematic diagram of the cylinder and piston in a pump body structure according to an embodiment of this application.

[0040] Figure label:

[0041] 10. Bearing; 11. Upper bearing; 12. Lower bearing; 13. Bearing mounting hole; 131. Oil guide groove;

[0042] 20. Cylinder assembly; 21. Cylinder; 22. Piston;

[0043] 31. Oil plug hole; 311. High-pressure drainage section; 312. Oil plug section; 32. Oil plug;

[0044] 40. Oil drain hole;

[0045] 50. Crankshaft. Detailed Implementation

[0046] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0048] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0049] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a control system for a goods or fabric handling apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to the control system of such goods or fabric handling apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the control system of the goods or fabric handling apparatus that includes said element.

[0050] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, but should not be construed as limiting this application.

[0051] Example 1

[0052] like Figures 1 to 6 As shown, an exemplary embodiment of this application provides a pump body structure that includes a bearing 10 and a cylinder assembly 20.

[0053] The bearing 10 includes an upper bearing 11 and a lower bearing 12, which are disposed opposite to each other on both sides of the cylinder assembly 20.

[0054] An oil plug hole 31 is provided on one of the upper bearing 11 and the lower bearing 12. The oil plug hole 31 is arranged along the radial direction of the bearing 10. One end of the oil plug hole 31 is connected to the outside, and the other end of the oil plug hole 31 is connected to the bearing mounting hole 13 inside the bearing 10. Lubricating oil can be directly delivered to the mating surface between the crankshaft 50 and the bearing 10 to achieve the most direct lubrication and effectively reduce the friction and wear of the crankshaft 50 during operation.

[0055] An oil plug 32 is provided at a set position inside the oil plug hole 31 to seal the oil plug hole 31. By screwing in the oil plug (32), the pump body structure is completely isolated from the outside world, preventing dust, moisture and other contaminants from entering, and also preventing internal lubricating oil leakage.

[0056] The bearing 10 also has an oil drain hole 40. One end of the oil drain hole 40 is connected to the oil plug hole 31 between the bearing mounting hole 13 and the oil plug 32. The other end of the oil drain hole 40 matches the radial end face of the piston 22 in the cylinder assembly 20, and the radial end face of the piston 22 is always opposite to the oil drain hole 40 during movement. That is to say, part of the lubricating oil in the oil guide groove 131 inside the bearing 10 is used for lubrication of the friction pair between the crankshaft 50 and the inner diameter of the bearing 10, and part of it is used for lubrication of the friction pair formed between the end face of the bearing 10 and the piston 22 through the oil plug hole 31 and the oil drain hole 40. This helps to reduce the wear of the end face of the piston 22 and the bearing 10, thereby improving the reliability of the compressor and reducing the power consumption of the compressor. Based on this, the end face of the piston 22 and the bearing 10 can be adequately lubricated, which can reduce the gap between the end face of the bearing 10 and the piston 22, thereby reducing the leakage, increasing the cooling (heating) capacity of the compressor, and thus improving the energy efficiency of the compressor.

[0057] On the other hand, in this example, all oil passages (oil plug holes, oil drain holes) are machined directly onto the bearing 10 body, eliminating the need for additional external oil pipes or complex connectors. This makes the entire pump body structure very compact, reduces potential leakage points, improves compressor rigidity, simplifies the assembly process, and lowers manufacturing costs and failure rates.

[0058] In other words, in this example, the lubrication system between the bearing 10 and the crankshaft 50 is coupled to the piston 22 in the pump body structure, so that the lubricating oil can be delivered to the side of the piston 22 that moves relative to the bearing 10, thereby providing a good lubrication effect for the use of the piston 22.

[0059] like Figures 1 to 6 As shown, in some embodiments, the oil plug orifice 31 includes a high-pressure guide section 311 and an oil plug section 312. The two ends of the high-pressure guide section 311 are connected to the oil guide groove 131 of the bearing mounting hole 13 and the oil plug section 312, respectively. The oil drain hole 40 is connected to the high-pressure guide section 311. The connection point of the oil drain hole 40 is explicitly defined as being connected to the high-pressure guide section 311, not the oil plug section 312. This ensures that the oil intake point of the oil drain hole 40 is entirely downstream of the seal of the oil plug 32. Tightening torque, wear, or slight loosening of the oil plug 32 will only affect the oil plug section 312 and will not directly affect the oil flow of the high-pressure guide section 311 and the oil drain hole 40, greatly improving the stability of the compressor operation.

[0060] There is a step structure between the high-pressure drain section 311 and the oil plug section 312. The step structure can be that there is an inner diameter difference between the two, that is, the inner diameter of the high-pressure drain section 311 is larger or smaller than the inner diameter of the oil plug section 312. The step (step difference) is naturally formed by the different inner diameters, which is similar to a machined surface and a limiting surface.

[0061] In a specific example, the inner diameter D2 of the oil plug section 312 is larger than the inner diameter D1 of the high-pressure diversion section 311. The oil plug 32 seals at the step structure, ensuring that the installation position of the oil plug 32 is unique and precise, reaching the same design position every time it is installed, thus guaranteeing the constant and reliable oil circuit volume. Simultaneously, during assembly, the operator only needs to screw the oil plug 32 until it contacts the step surface and reaches the specified torque, ensuring that the installation depth of the oil plug 32 is consistent in all products. This eliminates quality fluctuations caused by different operator habits, such as the oil plug 32 being screwed in too deeply or too shallowly, guaranteeing a high degree of consistency in the internal oil circuit volume and performance of each pump body structure.

[0062] The high-pressure drainage section 311 can efficiently and quickly "drain" and collect the oil after lubricating the bearing 10, so as to deliver it to the oil drain hole 40 for effective lubrication of some end faces of the piston 22. The small inner diameter D1 of the high-pressure drainage section 311 helps to maintain the flow pressure of the oil.

[0063] The larger inner diameter D2 of the oil plug section 312 is used to complete the operation and sealing area of ​​the oil plug 32. For example, it is used to install and operate the oil plug 32 (e.g., screwing it in and out). The larger space facilitates thread machining, placement of O-rings, or provides space for tooling operations.

[0064] like Figures 1 to 6 As shown, in some embodiments, the diameter of the oil drain hole is d1, the center distance between the diameter of the oil drain hole 40 and the center distance between the diameter of the bearing mounting hole 13 is a first distance L1, and the distance between the sealing position of the oil plug 32 and the center distance between the diameter of the bearing mounting hole 13 and the center distance between the sealing position and the center distance between the diameter of the bearing mounting hole 13 is a second distance L2, wherein L2 is greater than L1 + d1 / 2. Based on this, the lubricating oil in the high-pressure drainage section 311 can be discharged from the oil drain hole 40 and cannot be discharged from the side hole (not shown in the figure), while ensuring that the connection between the oil drain hole 40 and the high-pressure drainage section 311 is not affected by the oil plug 32, ensuring that the lubricating oil can flow smoothly to the oil drain hole 40.

[0065] like Figures 1 to 6As shown, in some embodiments, the bearing mounting hole 13 is used to mount the crankshaft 50, and the eccentricity of the crankshaft 50 is e. The outer diameter of the piston is D, where L1+d1 / 2 is less than D / 2-e. Based on this, during the 360° rotation of the piston 22, the oil drain hole 40 is covered by the radial end face plane of the piston 22 or located within the inner diameter of the piston 22, preventing high-pressure gas in the compression chamber from entering the oil drain hole 40 and the lateral high-pressure hole (not shown in the figure) and causing air leakage. This ensures that the oil drain hole 40 can always be aligned with the radial end face of the piston 22, and that the lubricating oil spray will not deviate from the surface of the piston 22 due to the eccentric movement of the crankshaft 50.

[0066] like Figures 1 to 6 As shown, in some embodiments, the cylinder assembly 20 further includes a cylinder 21, with a piston 22 disposed within the cylinder 21. Along the height direction of the pump body structure, the height of the cylinder 21 is H1, and the height of the piston 22 is H2, wherein H2 is less than or equal to H1, creating a certain gap between the piston 22 and the bearing 10, facilitating the formation of an oil film at the gap. Furthermore, the design of the relationship between the cylinder height H1 and the piston height H2 ensures that the piston 22 can complete its full stroke within the cylinder 21, preventing collisions between the piston 22 and the top or bottom of the cylinder 21, thereby improving the operational stability and service life of the pump body structure.

[0067] In a preferred embodiment, the oil drain hole 40 and the oil plug hole 31 are arranged perpendicular to each other.

[0068] In another preferred embodiment, the axis of the oil drain hole 40 is set at a predetermined angle to the axis of the oil plug hole 31, and the acute angle of the predetermined angle is in the range of 30° to 89°. It should be noted that the connection position between the oil drain hole 40 and the high-pressure flow section 311 is offset towards the axis of the crankshaft 50, so that the oil can enter the oil drain hole 40 more smoothly from the high-pressure flow section 311.

[0069] After the lubricating oil enters the high-pressure diversion section 311 from the oil guide groove 131, its flow direction is precisely guided to the inlet of the oil drain hole 40. This reduces the retention and disturbance of oil in the dead zone, making the lubricating oil flow path smoother and the resistance lower, improving the circulation efficiency of the lubrication system and reducing unnecessary power loss.

[0070] In a preferred embodiment, both the upper bearing 11 and the lower bearing 12 are provided with oil plug holes 31 so that the radial end faces of the piston 22 at each location of the upper bearing 11 and the lower bearing 12 can be lubricated by oil, thereby achieving effective lubrication of the piston 22 and improving the operating efficiency and service life of the compressor.

[0071] In this pump structure, during operation, the crankshaft 50 is mounted in the bearing 10 through the bearing mounting hole 13, and the crankshaft 50 drives the piston 22 to reciprocate within the cylinder 21. When the piston 22 moves, the lubricating oil in the bearing 10 enters the high-pressure drainage section 311 through the oil guide groove 131, and is then sprayed onto the radial end face of the piston 22 through the oil drain hole 40 for lubrication. Since the other end of the oil drain hole 40 matches the radial end face of the piston 22, and the radial end face of the piston 22 is always opposite to the oil drain hole 40 during movement, it can be ensured that the lubricating oil is continuously and effectively sprayed onto the radial end face of the piston 22, thus improving the lubrication effect.

[0072] Example 2

[0073] A compressor includes the pump body structure of Embodiment 1, and the compressor is a rotary compressor.

[0074] In this embodiment, the compressor adopts the pump body structure described in Embodiment 1. The pump body structure includes a bearing 10 and a cylinder assembly 20. The bearing 10 includes an upper bearing 111 and a lower bearing 12, which are respectively disposed on both sides of the cylinder assembly 20. The bearing 10 is provided with an oil plug hole 31 and an oil drain hole 40 for effective lubrication of the radial end face of the piston 22.

[0075] Specifically, the compressor has a cylindrical sealed housing, which houses a motor unit located on the upper side, a crankshaft 50 connected to the motor unit, and a compression mechanism driven by the crankshaft 50 and the motor unit. The compression mechanism includes a cylinder assembly 20, upper and lower bearings, a piston 22, a crankshaft 50, and a vane (not shown in the figure). The upper bearing 11 is located on the upper end face of the cylinder 21, and the lower bearing 12 is located on the lower end face of the cylinder 21, forming a sealed compression chamber. The bearings (the upper bearing 11 and the lower bearing 12 are collectively referred to as bearings) have a lateral high-pressure drainage section 312 (essentially a high-pressure drainage hole) and an oil drain hole 40 corresponding to the radial end face of the piston 22.

[0076] As a rotary compressor, the compressor in this embodiment drives the piston 22 to rotate within the cylinder 21 through the rotational motion of the crankshaft 50, thereby achieving the gas compression process. The crankshaft 50 is installed in the bearing mounting hole 13, and the piston 22 is driven to move through the eccentric structure on the crankshaft 50.

[0077] During compressor operation, the lubricating oil in the bearing 10 enters the high-pressure guide section 311 through the oil guide groove 131, and then is sprayed onto the radial end face of the piston 22 through the oil drain hole 40 for lubrication. Because the design of the oil drain hole 40 ensures that its other end always maintains a relative position with the radial end face of the piston 22, it can ensure that the lubricating oil is continuously and effectively sprayed onto the radial end face of the piston 22, thereby improving the lubrication effect of the rotary compressor.

[0078] Oil plug 32 is positioned at the step difference between oil plug section 312 and high-pressure drain section 311 to prevent lubricating oil from leaking out of oil plug hole 31. The position design of oil plug 32 ensures that the connection between drain hole 40 and high-pressure drain section 311 is not affected by oil plug 32, ensuring that lubricating oil can flow smoothly to drain hole 40.

[0079] The rotary compressor in this embodiment, by adopting the pump body structure in Embodiment 1, solves the problem of insufficient lubrication of the radial end face of the piston in traditional rotary compressors, improves the lubrication effect and operational stability of the compressor, and extends the service life of the compressor.

[0080] Example 3

[0081] A refrigeration device includes the compressor described in Embodiment 2. The compressor is a rotary compressor and includes a pump body structure, a crankshaft, and a piston.

[0082] This refrigeration equipment, employing the compressor described in Embodiment 2, exhibits excellent lubrication. The pump body structure within the compressor includes a bearing 10 and a cylinder assembly 20. The bearing 10 is provided with an oil plug hole 31 and an oil drain hole 40, which can effectively lubricate the radial end face of the piston 22.

[0083] When the refrigeration equipment is working, the crankshaft 50 inside the compressor rotates, driving the piston 22 to rotate within the cylinder 21, thus compressing the refrigerant. Lubricating oil in the bearing 10 enters the high-pressure guide section 311 through the oil guide groove 131, and then is sprayed onto the radial end face of the piston 22 through the oil drain hole 40 for lubrication. Because the oil drain hole 40 is designed to maintain a relative position with the radial end face of the piston 22, it ensures that lubricating oil is continuously and effectively sprayed onto the radial end face of the piston 22.

[0084] Refrigeration equipment also includes major components of the refrigeration cycle system such as evaporators, condensers, and expansion valves. The compressor compresses low-pressure refrigerant gas into high-temperature, high-pressure gas, which is then sent to the condenser to condense into a liquid. The liquid refrigerant is then throttled by the expansion valve and enters the evaporator, where it absorbs heat from the environment and evaporates back into gas, completing one refrigeration cycle.

[0085] This refrigeration equipment solves the problem of insufficient lubrication on the radial end face of the compressor piston in traditional refrigeration equipment by adopting a rotary compressor with a pump body structure. This improves the lubrication effect and operational stability of the equipment, extends its service life, and enhances refrigeration efficiency.

[0086] In the above example, by providing a lateral high-pressure drain hole 311 and an oil drain hole 40 corresponding to the end face of the piston 22 on the bearing 10, part of the lubricating oil in the oil guide groove 131 of the bearing 10 is used for lubrication of the friction pair between the crankshaft 50 and the inner diameter of the bearing 10, and part of it is used for lubrication of the friction pair formed between the end face of the bearing 10 and the piston 22 through the high-pressure drain hole 311 and the oil drain hole 40. This effectively reduces the wear between the end face of the piston 22 and the bearing 10, and improves the reliability of the compressor. At the same time, because the end face of the piston 22 and the bearing 10 is sufficiently lubricated, the gap between the end face of the bearing 10 and the piston 22 can be reduced, thereby reducing leakage and improving the cooling (heating) capacity and energy efficiency of the compressor. In addition, based on the above structural design, the power consumption of the compressor can also be reduced, further improving the overall performance of the compressor.

[0087] The serial numbers in the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0088] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0089] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0090] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0091] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0092] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0093] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A pump body structure, characterized in that, Includes bearings (10) and cylinder assembly (20); The bearing (10) includes an upper bearing (11) and a lower bearing (12). The upper bearing (11) and the lower bearing (12) are disposed opposite to each other on both sides of the cylinder assembly (20). One of the upper bearing (11) and the lower bearing (12) is provided with an oil plug hole (31). The oil plug hole (31) is disposed along the radial direction of the bearing (10). One end of the oil plug hole (31) is connected to the outside, and the other end of the oil plug hole (31) is connected to the bearing mounting hole (13) inside the bearing (10). An oil plug (32) for sealing the oil plug hole (31) is provided at a set position inside the oil plug hole (31). The bearing (10) is also provided with an oil drain hole (40). One end of the oil drain hole (40) is connected to the oil plug hole (31) between the bearing mounting hole (13) and the oil plug (32). The other end of the oil drain hole (40) is matched with the radial end face of the piston (22) in the cylinder assembly (20). The radial end face of the piston (22) is always opposite to the oil drain hole (40) when the piston (22) is moving.

2. The pump body structure according to claim 1, characterized in that, The oil plug orifice (31) includes a high-pressure drainage section (311) and an oil plug section (312); The two ends of the high-pressure diversion section (311) are respectively connected to the oil guide groove (131) of the bearing mounting hole (13) and the oil plug section (312), wherein the oil drain hole (40) is connected to the high-pressure diversion section (311).

3. The pump body structure according to claim 2, characterized in that, There is a step structure between the high-pressure diversion section (311) and the oil plug section (312); The inner diameter D2 of the oil plug section (312) is greater than the inner diameter D1 of the high-pressure diversion section (311), and the oil plug (32) is sealed at the step structure.

4. The pump body structure according to claim 3, characterized in that, The diameter of the oil drain hole (40) is d1, the center of the diameter of the oil drain hole (40) is a first distance L1 from the center of the diameter of the bearing mounting hole (13), and the sealing position of the oil plug (32) is a second distance L2 from the center of the diameter of the bearing mounting hole (13). Where L2 > L1 + d1 / 2.

5. The pump body structure according to claim 4, characterized in that, The bearing mounting hole (13) is used to mount the crankshaft (50), and the eccentricity of the crankshaft (50) is e; The outer diameter of the piston (22) is D; Where L1+d1 / 2<D / 2-e.

6. The pump body structure according to claim 5, characterized in that, The cylinder assembly (20) further includes a cylinder (21), wherein the piston is disposed within the cylinder (21); Along the height direction of the pump body structure, the height of the cylinder (21) is H1, and the height of the piston (22) is H2, wherein H2 is less than or equal to H1.

7. The pump body structure according to claim 1, characterized in that, The oil drain hole (40) and the oil plug hole (31) are arranged perpendicular to each other; or, The axis of the oil drain hole (40) is set at a predetermined angle to the axis of the oil plug hole (31), and the acute angle of the predetermined angle is in the range of 30° to 89°.

8. The pump body structure according to any one of claims 1 to 7, characterized in that, The upper bearing (11) and the lower bearing (12) are both provided with the oil plug hole (31).

9. A compressor, characterized in that, Includes the pump body structure as described in any one of claims 1 to 8; The compressor is a rotary compressor.

10. A refrigeration device, characterized in that, Includes the compressor as described in claim 9.

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