Compressor cylinder, pump body assembly and compressor

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a compressor cylinder which comprises a cylinder body. The cylinder body is provided with a cylinder inner cavity and a plurality of threaded fixing holes penetrating through the cylinder body, and the threaded fixing holes are used for adaptively connecting threaded connecting pieces. Each threaded fixing hole is circumferentially provided with a blocking structure which is used for blocking the stress transmission between the threaded fixing hole and the threaded connecting piece, so that the deformation of the cylinder inner cavity is reduced. The cylinder body is further provided with a sliding vane groove which is in communication with the cylinder inner cavity. By circumferentially arranging the blocking structure in each threaded fixing hole, the influence of the pre-tightening stress between the threaded connecting piece and the threaded fixing hole on the cylinder body can be reduced, and then the deformation of the cylinder inner cavity and the sliding vane groove is reduced, and the performance of the compressor is improved. The application further discloses a pump body assembly and a compressor.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, such as a compressor cylinder, pump body assembly, and compressor. Background Technology

[0002] As a core component of refrigeration equipment, the compressor is a crucial refrigerant compression device and a significant factor determining the energy efficiency of refrigeration equipment. The pump body, as the component in the compressor that compresses the refrigerant, mainly consists of a cylinder, crankshaft, rollers, vanes, main bearing, and auxiliary bearing. The compressor pump body assembly typically uses screws to connect the various components. In related technologies, before assembling the compressor pump body assembly, through-hole fixing holes are usually provided on the main and auxiliary bearings, and threaded fixing holes are provided on the cylinder. Then, screws are used to assemble the cylinder with the main and auxiliary bearings, and finally, the compressor pump body assembly is completed by adjusting the core.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] In related technologies, during the assembly process of a compressor, the interaction between the screw and the threaded hole can cause significant deformation of the cylinder cavity and the vane groove located in the cylinder, thereby reducing the compressor's energy efficiency.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a compressor cylinder, a pump body assembly, and a compressor. By circumferentially providing a blocking structure on the threaded fixing hole on the cylinder body, stress transmission between the threaded fixing hole and the threaded connector is blocked, thereby reducing the deformation of the cylinder cavity and the vane groove. This addresses the problem in related technologies where, during compressor assembly, the interaction between the threaded connector and the threaded fixing hole causes significant deformation of the cylinder and the vane groove located in the cylinder, thus reducing the compressor's energy efficiency.

[0008] In some embodiments, the compressor cylinder includes a cylinder body. The cylinder body has a cylinder cavity and a plurality of threaded fixing holes penetrating the cylinder body, the threaded fixing holes being adapted for connection with threaded fasteners. Each threaded fixing hole is provided with a circumferential blocking structure to block stress transmission between the threaded fixing hole and the threaded fastener, thereby reducing deformation of the cylinder cavity.

[0009] Optionally, the blocking structure includes multiple blocking through holes penetrating the cylinder body. These blocking through holes are evenly spaced around the threaded fixing hole, and the diameter of the blocking through holes is d. The diameter of the threaded fixing hole is D. Wherein, 0.15 ≤ d / D ≤ 0.6, and 1 mm ≤ d ≤ 4 mm.

[0010] Optionally, the minimum distance between the wall of the blocking through hole and the inner wall of the cylinder cavity is 'a'. The minimum distance between the wall of the blocking through hole and the wall of the threaded fixing hole is 'b'. The minimum distance between the walls of two adjacent blocking through holes is 'c'. Wherein, a≥2mm, b≥1mm, and c≥2mm.

[0011] Optionally, the blocking via includes a waist-shaped via and / or a circular via.

[0012] Optionally, when the blocking structure includes oblong through holes, multiple oblong through holes are equally spaced around the threaded fixing hole, and the width of the oblong through hole is d1. Wherein, 0.15≤d1 / D≤0.6, 1mm≤d1≤4mm.

[0013] Optionally, the arc angle of the waist-shaped through hole is β, where 5°≤β≤80°.

[0014] Optionally, when the blocking structure includes circular through holes, multiple circular through holes are equally spaced around the threaded fixing hole, and the diameter of the circular through holes is d2. Wherein, 0.15≤d2 / D≤0.6, and 1mm≤d2≤4mm.

[0015] Optionally, the number of blocking holes is greater than or equal to 3 and less than or equal to 6.

[0016] In some embodiments, the pump body assembly includes the compressor cylinder described above.

[0017] In some embodiments, the compressor includes the compressor cylinder described above or the pump body assembly described above.

[0018] The compressor cylinder and compressor provided in this disclosure can achieve the following technical effects:

[0019] The compressor cylinder provided in this embodiment includes a cylinder body. The cylinder body has a cylinder cavity and multiple threaded fixing holes penetrating the cylinder body, the threaded fixing holes being adapted for connection with threaded connectors. The cylinder body also has a vane groove communicating with the cylinder cavity, the vane groove extending radially along the cylinder. During compressor assembly, the threaded fixing holes in the cylinder body are adapted for connection with the threaded connectors, generating preload stress between the threaded fixing holes and the threaded connectors to fix the cylinder to other components of the compressor. By providing a blocking structure circumferentially in each threaded fixing hole, the influence of the preload stress between the threaded connectors and the threaded fixing holes on the cylinder body can be reduced, thereby reducing the deformation of the cylinder cavity and the vane groove.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a structural schematic diagram of a compressor cylinder in a related technology.

[0023] Figure 2 This is a structural diagram of another compressor cylinder in the related technology;

[0024] Figure 3 yes Figure 2 Enlarged schematic diagram of region A' in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of a compressor cylinder provided in an embodiment of this disclosure;

[0026] Figure 5 yes Figure 4 Enlarged view of region X in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of another compressor cylinder provided in an embodiment of this disclosure;

[0028] Figure 7 yes Figure 6 Enlarged schematic diagram of the Y region;

[0029] Figure 8 This is a schematic diagram of the structure of another compressor cylinder provided in an embodiment of this disclosure;

[0030] Figure 9 This is a schematic diagram of the structure of another compressor cylinder provided in an embodiment of this disclosure;

[0031] Figure 10 yes Figure 9 Enlarged view of region A in the middle;

[0032] Figure 11 This is a radial deformation curve of the cylinder cavity of a compressor cylinder provided by embodiments of this disclosure and related technologies;

[0033] Figure 12 This is a deformation curve diagram of the vane groove of the compressor cylinder provided in the embodiments of this disclosure and related technologies;

[0034] Figure 13 This is a stress transfer diagram between the threaded fixing hole and the threaded connection on a compressor cylinder in a related technology.

[0035] Figure 14 This disclosure provides a stress transmission diagram between a threaded fixing hole on a compressor cylinder and a threaded connector.

[0036] Figure 15 This disclosure provides another stress transfer diagram between the threaded fixing hole on the compressor cylinder and the threaded connector.

[0037] Figure label:

[0038] 10': Cylinder body; 11': Intake port; 12': Process positioning hole; 13': Rivet clearance hole; 14': Sliding vane groove; 15': Cylinder inner cavity; 151': Cylinder inner cavity wall; 16': Threaded fixing hole;

[0039] 10: Cylinder body; 11: Intake port; 12: Process positioning hole; 13: Rivet clearance hole; 14: Sliding vane groove; 15: Cylinder inner cavity; 151: Cylinder inner cavity wall; 16: Threaded fixing hole; 17: Waist-shaped through hole; 18: Circular through hole. Detailed Implementation

[0040] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0041] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0042] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0043] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0044] Unless otherwise stated, the term "multiple" means two or more.

[0045] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0046] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0048] The compressor, as a core component of an air conditioner, is a crucial refrigerant compression device and a key factor determining the energy efficiency of refrigeration equipment. The pump body, as the refrigerant compression component within the compressor, consists of a cylinder, crankshaft, rollers, vanes, main bearing, auxiliary bearing, and related parts. For example... Figure 1As shown, the cylinder body 10' of a traditional compressor cylinder is generally provided with an air intake hole 11', a process positioning hole 12', a rivet clearance hole 13', a vane groove 14', a cylinder inner cavity 15', and a threaded fixing hole 16'.

[0049] Currently, compressor cylinders are generally manufactured using gray cast iron or powder metallurgy materials. Due to their high density and weight, gray cast iron and powder metallurgy materials exhibit excellent machinability during compressor cylinder production. During the assembly of the compressor pump body and the entire compressor unit, threaded connectors are commonly used to fix the various components. Typically, through-hole fixing holes are provided on the main and auxiliary bearings of the compressor pump body, and threaded fixing holes 16' are provided on the cylinder body 10'. The cylinder is then assembled with the main and auxiliary bearings using threaded connectors, and finally, the compressor pump body assembly is completed by adjusting the core. However, due to the material properties of gray cast iron or powder metallurgy, before and after the assembly of the compressor pump body and the entire compressor unit, the interaction between the threaded connectors and the threaded fixing holes 16' causes varying degrees of deformation in the cylinder cavity and the vane groove. The maximum deformation of the cylinder cavity wall is approximately 5 μm, and the maximum deformation of the vane groove is approximately 6 μm, thus reducing the compressor's energy efficiency.

[0050] This disclosure provides a compressor cylinder and a compressor. By providing a blocking structure circumferentially on the threaded fixing hole 16 on the cylinder body, the stress transmission between the threaded fixing hole 16 and the threaded connector is blocked, thereby reducing the deformation of the cylinder cavity 15 and the vane groove 14. This solves the problem in the related art where, during the compressor assembly process, the interaction between the threaded connector and the threaded fixing hole 16 causes large deformation of the cylinder cavity 15 and the vane groove 14 provided in the cylinder, thereby reducing the energy efficiency of the compressor.

[0051] Referring to Figures 4-10, this disclosure provides a compressor cylinder, including a cylinder body 10. The cylinder body is provided with a cylinder cavity 15 and a plurality of threaded fixing holes 16 penetrating the cylinder body. The threaded fixing holes 16 are used for mating and connecting with threaded fasteners. Each threaded fixing hole 16 is provided with a blocking structure in the circumferential direction to block the stress transmission between the threaded fixing hole 16 and the threaded fastener, thereby reducing the deformation of the cylinder cavity 15.

[0052] The compressor cylinder provided in this embodiment includes a cylinder body 10. The cylinder body 10 is provided with an intake port 11, a process positioning hole 12, a rivet clearance hole 13, a vane groove 14, a cylinder cavity 15, threaded fixing holes 16, and a blocking structure, allowing the cylinder to be assembled with other components of the compressor. The cylinder body 10 has a cylinder cavity 15 and a vane groove 14 communicating with the cylinder cavity 15. The vane groove 14 extends radially along the cylinder body 10. The cylinder body 10 also has a plurality of threaded fixing holes 16 penetrating the cylinder body 10 for mating with threaded connectors. During the compressor assembly process, the threaded fixing holes 16 in the cylinder body are mated with the threaded connectors, generating preload stress between the threaded fixing holes 16 and the threaded connectors to fix the cylinder to the other components of the compressor. By providing a blocking structure around each threaded fixing hole 16, the pre-tightening stress between the threaded connector and the threaded fixing hole 16 is blocked, reducing the impact of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body, thereby reducing the deformation of the cylinder cavity 15 and the vane groove 14 and improving the performance of the compressor.

[0053] Optionally, the blocking structure includes multiple blocking through holes penetrating the cylinder body 10. These multiple blocking through holes are evenly spaced around the threaded fixing hole 16, and the diameter of the blocking through holes is d. The diameter of the threaded fixing hole 16 is D. Wherein, 0.15 ≤ d / D ≤ 0.6, and 1 mm ≤ d ≤ 4 mm.

[0054] With this configuration, the blocking structure includes multiple blocking through holes penetrating the cylinder body 10. These multiple blocking through holes can reduce the impact of the preload stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10 of the compressor cylinder. Furthermore, the multiple blocking through holes are evenly spaced around the threaded fixing hole 16, which further enhances the blocking effect on the preload stress between the threaded connector and the threaded fixing hole 16, thereby reducing the impact of the preload stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10, and thus reducing the deformation of the cylinder cavity 15 and the vane groove 14 of the cylinder body 10.

[0055] It is understandable that the threaded fixing hole 16 is installed through the cylinder body along the cylinder's axial direction. Similarly, the blocking through hole is also installed through the cylinder body along the cylinder's axial direction.

[0056] By setting the diameter of the blocking through hole to d and the diameter of the threaded fixing hole 16 to D, and ensuring that 0.15≤d / D≤0.6 and 1mm≤d≤4mm, the blocking through hole can better block the pre-tightening stress between the threaded connector and the threaded fixing hole 16 while ensuring the strength of the cylinder body 10 of the compressor cylinder. This reduces the impact of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10.

[0057] The diameter of the threaded fixing hole 16 is not limited here and can be set according to the actual process requirements of the compressor pump body. The blocking through hole can be set accordingly based on the diameter of the threaded fixing hole 16.

[0058] For example, when the diameter of the threaded fixing hole 16 is selected as 5mm, the diameter of the blocking through hole can be selected as 0.75mm, 1mm, 1.5mm, 2mm, 2.3mm, 2.65mm, or 3mm. Furthermore, when the diameter of the threaded fixing hole 16 is selected as 5mm, in order to ensure the pre-tightening stress blocking effect between the threaded connector and the threaded fixing hole 16 and the strength of the compressor cylinder body 10, the minimum diameter of the blocking through hole can be selected as 0.75mm, and the maximum diameter can be selected as 3mm.

[0059] Optionally, the minimum distance between the wall of the blocking through hole and the inner wall 151 of the cylinder is 'a'. The minimum distance between the wall of the blocking through hole and the wall of the threaded fixing hole 16 is 'b'. The minimum distance between the walls of two adjacent blocking through holes is 'c'. Wherein, a≥2mm, b≥1mm, and c≥2mm.

[0060] With this configuration, the minimum distance between the wall of the blocking through hole and the inner wall 151 of the cylinder is set to 'a', the minimum distance between the wall of the blocking through hole and the wall of the threaded fixing hole 16 is set to 'b', and the minimum distance between the walls of two adjacent blocking through holes is set to 'c', and a≥2mm, b≥1mm, c≥2mm. This ensures the blocking effect of the blocking through hole on the pre-tightening stress between the threaded connector and the threaded fixing hole 16 and the strength of the cylinder body 10, thereby reducing the impact of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10, thus reducing the deformation of the inner cavity 15 and the vane groove 14 on the cylinder body 10 and improving the performance of the compressor.

[0061] Setting the minimum distance between the wall of the blocking through-hole and the inner wall 151 of the cylinder cavity to 'a', and ensuring that 'a' ≥ 2 mm, guarantees a certain distance between the blocking through-hole and the inner cavity 15, thus ensuring the strength of the cylinder body 10 and preventing deformation of the inner cavity 15. Setting the minimum distance between the wall of the blocking through-hole and the wall of the threaded fixing hole 16 to 'b', and ensuring that 'b' ≥ 1 mm, prevents the threaded fixing hole 16 from undergoing significant deformation or breakage under the action of the threaded connector, thereby reducing the blocking effect on the pre-tightening stress between the threaded connector and the threaded fixing hole 16 and the strength of the cylinder body 10. Setting the minimum distance between the walls of two adjacent blocking through-holes to 'c', and ensuring that 'c' ≥ 2 mm, guarantees the strength of the cylinder body 10 around the threaded fixing hole 16, preventing multiple blocking through-holes from breaking under the action of the threaded connector on the threaded fixing hole 16, thereby reducing the blocking effect on the pre-tightening stress between the threaded connector and the threaded fixing hole 16 and the strength of the cylinder body 10.

[0062] Optionally, the number of blocking holes is greater than or equal to 3 and less than or equal to 6.

[0063] This configuration, with the number of blocking through holes set to be greater than or equal to 3 and less than or equal to 6, ensures that the multiple blocking through holes effectively block the preload stress between the threaded connector and the threaded fixing hole 16. This reduces the impact of the preload stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10 of the compressor cylinder, and reduces the deformation of the cylinder cavity 15 and the vane groove 14. Setting the number of blocking through holes too high may affect the inherent strength of the compressor cylinder body 10. Optionally, the number of blocking through holes can be 3, 4, 5, or 6.

[0064] Optionally, the blocking through-hole includes a waist-shaped through-hole 17 and / or a circular through-hole 18.

[0065] With this configuration, the blocking through-holes include oblong through-holes 17, and the number of oblong through-holes 17 is greater than or equal to 3 and less than or equal to 6. This allows the multiple oblong through-holes 17 to effectively block the preload stress between the threaded connector and the threaded fixing hole 16. If the number of oblong through-holes 17 is set too high, it may affect the strength of the cylinder body 10 of the compressor cylinder. Optionally, the number of oblong through-holes 17 can be 3, 4, 5, or 6.

[0066] With this configuration, the blocking through-holes include circular through-holes 18, and the number of circular through-holes 18 is greater than or equal to 3 and less than or equal to 6. This allows the multiple circular through-holes 18 to effectively block the preload stress between the threaded connector and the threaded fixing hole 16. If the number of circular through-holes 18 is set too high, it may affect the strength of the cylinder body 10 of the compressor cylinder. Optionally, the number of circular through-holes 18 can be 3, 4, 5, or 6.

[0067] Furthermore, in addition to ensuring the effect of blocking the pre-tightening stress between the threaded connector and the threaded fixing hole 16, the waist-shaped through hole 17 and the circular through hole 18 are also easier to process during the production of the compressor cylinder.

[0068] Optionally, when the blocking structure includes a waist-shaped through hole 17, a plurality of waist-shaped through holes 17 are equally spaced around the threaded fixing hole 16, and the waist width of the waist-shaped through hole 17 is d1. Wherein, 0.15≤d1 / D≤0.6, 1mm≤d1≤4mm.

[0069] Combination Figure 4 and Figure 5 As shown, when the blocking structure includes oblong through holes 17, multiple oblong through holes 17 are equally spaced around the threaded fixing hole 16. This improves the blocking effect of the multiple oblong through holes 17 on the pre-tightening stress between the threaded connector and the threaded fixing hole 16. By setting the diameter of the oblong through holes 17 to d1, and ensuring 0.15≤d1 / D≤0.6 and 1mm≤d1≤4mm, the blocking effect of the oblong through holes 17 on the pre-tightening stress between the threaded connector and the threaded fixing hole 16 is improved while maintaining the strength of the compressor cylinder body 10. This reduces the impact of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10, thereby improving the compressor's performance.

[0070] Furthermore, such as Figure 5 As shown, the minimum distance between the wall of the oblong through hole 17 and the inner wall 151 of the cylinder is set as a1, the minimum distance between the wall of the oblong through hole 17 and the wall of the threaded fixing hole 16 is set as b1, and the minimum distance between the walls of two adjacent oblong through holes 17 is set as c1, and a1≥2mm, b1≥1mm, c1≥2mm. This ensures the blocking effect of the oblong through hole 17 on the pre-tightening stress between the threaded connector and the threaded fixing hole 16 and the strength of the cylinder body 10, so as to reduce the influence of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10, thereby reducing the deformation of the cylinder inner cavity 15 and the vane groove 14 on the cylinder body 10 and improving the performance of the compressor.

[0071] Optionally, the arc angle of the waist-shaped through hole 17 is β, where 5°≤β≤80°.

[0072] With this setting, the arc angle of the waist-shaped through hole 17 is set to β, and 5°≤β≤80°. This allows the arc angle of the waist-shaped through hole 17 to be adjusted according to the number of waist-shaped through holes 17 set around the threaded fixing hole 16, thereby ensuring that the waist-shaped through hole 17 has a better effect on blocking the pre-tightening stress between the threaded connector and the threaded fixing hole 16.

[0073] Optionally, the number of oblong through holes 17 is negatively correlated with their arc angle β. That is, the more oblong through holes 17 there are, the smaller the value of their arc angle β.

[0074] For example, when there are 3 oblong through holes 17, the maximum value of the arc angle β of the oblong through hole 17 is 80°, that is, 5°≤β≤80°. When there are 6 oblong through holes 17, the maximum value of the arc angle β of the oblong through hole 17 is 10°, that is, 5°≤β≤10°.

[0075] Optionally, when the blocking structure includes a circular through hole 18, a plurality of circular through holes 18 are equally spaced around the threaded fixing hole 16, and the diameter of the circular through hole 18 is d2. Wherein, 0.15≤d2 / D≤0.6, 1mm≤d2≤4mm.

[0076] Combination Figure 6 and Figure 7 As shown, when the blocking structure includes circular through holes 18, multiple circular through holes 18 are equally spaced around the threaded fixing hole 16. This results in a better blocking effect of the multiple circular through holes 18 on the pre-tightening stress between the threaded connector and the threaded fixing hole 16. By setting the diameter of the circular through holes 18 to d2, and ensuring that 0.15≤d2 / D≤0.6 and 1mm≤d2≤4mm, the blocking effect of the circular through holes 18 on the pre-tightening stress between the threaded connector and the threaded fixing hole 16 can be improved while maintaining the strength of the compressor cylinder body 10. This reduces the impact of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10, thereby improving the compressor's performance.

[0077] Furthermore, such as Figure 7As shown, the minimum distance between the wall of the circular through hole 18 and the inner wall 151 of the cylinder is set to a2, the minimum distance between the wall of the circular through hole 18 and the wall of the threaded fixing hole 16 is set to b2, and the minimum distance between the walls of two adjacent circular through holes 18 is set to c2, and a2≥2mm, b2≥1mm, c2≥2mm. This ensures the blocking effect of the circular through hole 18 on the pre-tightening stress between the threaded connector and the threaded fixing hole 16 and the strength of the cylinder body 10, so as to reduce the influence of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10, thereby reducing the deformation of the cylinder inner cavity 15 and the vane groove 14 on the cylinder body 10 and improving the performance of the compressor.

[0078] Combination Figure 1 , Figure 2 , Figure 3 and Figure 13 As shown, it can be seen that the preload stress between the threaded connector and the threaded fixing hole 16' in the related technology has a significant impact on the cylinder cavity 15' and the vane groove 14' on the cylinder body 10. For example... Figure 1 As shown in the figure, the dashed line represents the deformation trend of the cylinder inner cavity 15' caused by the preload stress between the threaded connector and the threaded fixing hole 16'. It can be seen that the deformation of the cylinder inner cavity 15' is mainly concentrated near the threaded fixing hole 16'. This result is consistent with... Figure 13 The preload stress between the threaded connector and the threaded fixing hole 16' shown in the diagram corresponds to the stress transmission direction of the cylinder inner cavity 15'. For example... Figure 2 and Figure 3 As shown in the figure, the dashed line represents the deformation trend of the sliding groove 14' caused by the pre-tightening stress between the threaded connector and the threaded fixing hole 16'. It can be seen that the deformation of the sliding groove 14' is wedge-shaped.

[0079] For ease of description, we will take the blocking structure as an example, with three waist-shaped through holes 17.

[0080] Combination Figure 8 , Figure 9 , Figure 10 and Figure 14 As shown, in this embodiment of the present disclosure, multiple blocking structures are provided in the circumferential direction of the threaded fixing hole 16, which effectively blocks the effect of the pre-tightening stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10, thereby reducing the deformation of the cylinder cavity 15 and the sliding vane groove 14.

[0081] Combination Figure 1 and Figure 8 The compressor cylinder provided in this embodiment reduces the deformation of the cylinder cavity 15 by providing a waist-shaped through hole 17 circumferentially around the threaded fixing hole 16, which is significantly less than the deformation of the cylinder cavity 15' in related technologies. Furthermore, in conjunction with... Figure 11As shown in the figure, the dashed line represents the radial deformation curve of the cylinder cavity 15' of a compressor cylinder in the related art under the preload stress between the threaded connector and the threaded fixing hole 16'. The solid line represents the radial deformation curve of the cylinder cavity 15' under the preload stress between the threaded connector and the threaded fixing hole 16 after the compressor cylinder provided in the embodiment of this disclosure has a waist-shaped through hole 17 circumferentially provided in the threaded fixing hole 16. It can be seen that with the cylinder unfolding angle, the deformation of the cylinder cavity 15 is larger at the position where the threaded connector and the threaded fixing hole 16 interact. However, after the compressor cylinder of the embodiment of this disclosure has a waist-shaped through hole 17 circumferentially provided in the threaded fixing hole 16, the deformation of the cylinder cavity 15 is reduced by about 40%. This result is consistent with... Figure 14 The preload stress between the threaded connector and the threaded fixing hole 16, as illustrated in the diagram, is transmitted to the cylinder cavity 15 in the same direction as the stress transmitted through the oblique through hole 17. Under the action of the preload stress between the threaded connector and the threaded fixing hole 16, the oblique through hole 17 undergoes a certain deformation, thereby preventing the preload stress between the threaded connector and the threaded fixing hole 16 from directly acting on the cylinder body 10 of the compressor cylinder, thus reducing the impact on the cylinder cavity 15 and consequently reducing the deformation of the cylinder cavity 15.

[0082] Combination Figure 2 , Figure 3 , Figure 9 and Figure 10 The compressor cylinder provided in this embodiment significantly reduces the deformation of the vane groove 14 by providing a waist-shaped through hole 17 circumferentially around the threaded fixing hole 16, compared to the deformation of the vane groove 14' in compressor cylinders of related technologies. Furthermore, in conjunction with... Figure 12 As shown in the figure, the dashed line represents the deformation curve of the vane groove 14' of a compressor cylinder under the preload stress between the threaded connector and the threaded fixing hole 16' in the related art. The solid line represents the deformation curve of the vane groove 14' under the preload stress between the threaded connector and the threaded fixing hole 16 after the compressor cylinder provided in the embodiment of this disclosure has an oblong through hole 17 circumferentially provided in the threaded fixing hole 16. It can be seen that with the vane length, the deformation of the vane groove 14 is relatively large at the position where the threaded connector and the threaded fixing hole 16 interact. However, after the compressor cylinder of the embodiment of this disclosure has an oblong through hole 17 circumferentially provided in the threaded fixing hole 16, the deformation of the vane groove 14 is reduced by about 33%.

[0083] Combination Figure 15As shown, when the blocking structure is a circular through hole 18, the preload stress between the threaded connector and the threaded fixing hole 16, as illustrated in the figure, is transmitted to the cylinder cavity 15 under the blocking effect of the circular through hole 18. Under the action of the preload stress between the threaded connector and the threaded fixing hole 16, the circular through hole 18 undergoes a certain deformation, thereby blocking the direct action of the preload stress between the threaded connector and the threaded fixing hole 16 on the cylinder body 10 of the compressor cylinder, thus reducing the impact on the cylinder cavity 15, and consequently reducing the deformation of the cylinder cavity 15.

[0084] This disclosure also provides a pump body assembly, including the compressor cylinder described above.

[0085] This disclosure also provides a compressor, including the compressor cylinder or pump body assembly described above.

[0086] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A compressor cylinder, characterized in that, include: The cylinder body is provided with a cylinder cavity and multiple threaded fixing holes that penetrate the cylinder body. The threaded fixing holes are used to be adapted to connect with threaded fasteners. The cylinder body is provided with a sliding vane groove that communicates with the cylinder cavity and extends radially along the cylinder body. Each threaded fixing hole is circumferentially equipped with a blocking structure to block the stress transmission between the threaded fixing hole and the threaded connection, thereby reducing the deformation of the cylinder cavity and the sliding vane groove. The blocking structure includes multiple blocking through holes penetrating the cylinder body. The blocking through holes include waist-shaped through holes with a waist width of d1. The diameter of the threaded fixing hole is D, 0.15≤d1 / D≤0.6, 1mm≤d1≤4mm. The arc angle of the waist-shaped through hole is β, 5°≤β≤80°. The number of waist-shaped through holes is negatively correlated with their arc angle β. When there are 3 waist-shaped through holes, the arc angle of the waist-shaped through holes is 5°≤β≤80°; when there are 6 waist-shaped through holes, the arc angle of the waist-shaped through holes is 5°≤β≤10°.

2. The compressor cylinder according to claim 1, characterized in that, Multiple blocking through holes are equally spaced around the threaded fixing hole, and the diameter of the blocking through holes is d; The diameter of the threaded fixing hole is D. Wherein, 0.15≤d / D≤0.6, 1mm≤d≤4mm.

3. The compressor cylinder according to claim 2, characterized in that, The minimum distance between the wall of the blocking through hole and the inner wall of the cylinder is a; The minimum distance between the wall of the blocking through hole and the wall of the threaded fixing hole is b; The minimum distance between the walls of two adjacent blocking through holes is c. Where a≥2mm, b≥1mm, c≥2mm.

4. The compressor cylinder according to claim 3, characterized in that, In the case where the blocking structure includes a waist-shaped through hole, multiple waist-shaped through holes are equally spaced around the threaded fixing hole.

5. The compressor cylinder according to claim 3, characterized in that, In the case where the blocking structure includes circular through holes, multiple circular through holes are equally spaced around the threaded fixing hole, and the diameter of the circular through holes is d2. Where 0.15≤d2 / D≤0.6, 1mm≤d2≤4mm.

6. The compressor cylinder according to any one of claims 2 to 5, characterized in that, The number of blocking holes is greater than or equal to 3 and less than or equal to 6.

7. A pump body assembly, characterized in that, Includes the compressor cylinder as described in any one of claims 1 to 6.

8. A compressor, characterized in that, Includes a compressor cylinder as described in any one of claims 1 to 6 or a pump assembly as described in claim 7.

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