Cylinder structure, compressor and air conditioner

Abstract

This invention provides a cylinder structure, a compressor, and an air conditioner. The cylinder structure includes a cylinder with a compression chamber and a vane groove, the vane groove communicating with the compression chamber. A buffer groove is also provided on the cylinder, located on the side of the vane groove. The wall of the vane groove and the wall of the compression chamber are spaced apart from the buffer groove to reduce the rigidity of the vane groove. The technical solution provided by this invention solves the technical problem of severe vane damage in existing compressors.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a cylinder structure, a compressor, and an air conditioner. Background Technology

[0002] Currently, with the improvement of people's living standards, people have increasingly higher requirements for environmental comfort, and air conditioning has become an essential appliance in almost every household. Due to the low manufacturing cost and low price of rotary compressors, the vast majority of compressors used in the household air conditioning industry are rotary compressors. The cylinder of the rotary compressor is one of the core components of the compressor pump body. In current technology, due to limitations in processing conditions, the sliding vane groove structure of the cylinder cannot achieve the machining precision of surface grinding. Therefore, the dimensional tolerances and surface roughness of the sliding vane groove are poor, resulting in greater frictional power consumption and leakage on the sliding vane side, thus affecting the performance of the rotary compressor.

[0003] During compressor operation, the vane slides back and forth in the vane slot of the cylinder. Simultaneously, the vane experiences relative motion friction with both sides of the slot, causing the vane temperature to rise and resulting in significant radial thermal deformation. This reduces the radial clearance between the vane and the mating surfaces of the cylinder's vane slot, ultimately leading to severe wear on both sides of the vane and the cylinder's vane slot. Furthermore, the vane's movement within the cylinder's compression chamber is subject to pressure differential forces, causing it to deviate and increasing frictional power consumption during rotary compressor operation. Rotary compressors have higher power outputs but lower energy efficiency ratios. Additionally, the reciprocating friction of the vane within the slot causes wear on the vane's sides, thus reducing the reliability of the rotary compressor. Summary of the Invention

[0004] The main objective of this invention is to provide a cylinder structure, a compressor, and an air conditioner to solve the technical problem of severe damage to the sliding vanes of compressors in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a cylinder structure is provided, comprising: a cylinder having a compression chamber and a sliding vane groove thereon, the sliding vane groove communicating with the compression chamber; wherein, a buffer groove is also provided on the cylinder, the buffer groove being located on the side of the sliding vane groove, the groove wall of the sliding vane groove and the cavity wall of the compression chamber being spaced apart from the buffer groove, so as to reduce the rigidity of the sliding vane groove through the buffer groove.

[0006] Furthermore, the cylinder is also provided with a connecting hole, one end of which is connected to the buffer groove, and the other end of which is connected to the sliding plate groove, so that the buffer groove is connected to the sliding plate groove through the connecting hole.

[0007] Furthermore, the sliding groove includes interconnected strip-shaped groove segments and groove bottom holes, with the other end of the connecting hole communicating with the groove bottom holes.

[0008] Furthermore, there are multiple buffer slots, which are spaced apart, and multiple connection holes, which are arranged one-to-one with the multiple buffer slots, and each connection hole is connected to the corresponding buffer slot; at least two buffer slots are located on both sides of the sliding plate slot.

[0009] Furthermore, the cylinder is also provided with an exhaust port, which is connected to the compression chamber; the buffer groove includes a first buffer groove, which is located on the side of the slide groove away from the exhaust port, and the first buffer groove extends along the extension direction of the slide groove; the connecting hole includes a first connecting hole, one end of the first connecting hole is connected to the first buffer groove, and the other end of the first connecting hole is connected to the slide groove.

[0010] Furthermore, the first buffer groove includes a first groove segment and a second groove segment that are interconnected. The first groove segment is located on the side of the second groove segment near the compression chamber. Both the first groove segment and the second groove segment are square groove structures. The distance between the groove wall of the first groove segment and the groove wall of the sliding plate groove is L1, and the distance between the groove wall of the second groove segment and the groove wall of the sliding plate groove is L2, where L1 < L2.

[0011] Furthermore, 0.3mm≤L1≤3.5mm.

[0012] Furthermore, the distance between the wall of the first groove segment and the wall of the compression chamber is L4, where L4 > L1.

[0013] Furthermore, the width of the first groove segment is greater than the width of the second groove segment; and / or, the inner and outer wall thicknesses of the cylinder are T1, the length of the first buffer groove is T2, and 1.2≤T1 / T2≤1.5.

[0014] Furthermore, the buffer groove includes a second buffer groove, which is located on the side of the slide groove near the exhaust port and extends along the extension direction of the slide groove; the connecting hole includes a second connecting hole, one end of which communicates with the second buffer groove and the other end of which communicates with the slide groove.

[0015] Furthermore, the wall of the first buffer groove includes a first arcuate surface and a first flat surface, the first flat surface being located on the side of the first arcuate surface near the slide groove, and the groove width of the first buffer groove at the end near the cavity wall of the compression chamber being greater than the groove width of the first buffer groove at the end away from the cavity wall of the compression chamber; and / or, the wall of the second buffer groove includes a second arcuate surface and a second flat surface, the second flat surface being located on the side of the second arcuate surface near the slide groove, and the groove width of the second buffer groove at the end near the cavity wall of the compression chamber being less than the groove width of the second buffer groove at the end away from the cavity wall of the compression chamber.

[0016] Furthermore, the second buffer trough includes a third trough segment and a fourth trough segment that are interconnected. The third trough segment is located on the side of the fourth trough segment that is close to the exhaust port. The distance between the third trough segment and the exhaust port is L3, where L3 > L1; and / or, the length of the first buffer trough is T2, and the length of the second buffer trough is T3, where T2 > T3.

[0017] According to another aspect of the present invention, a compressor is provided, the compressor including a cylinder structure, the cylinder structure being the cylinder structure provided above.

[0018] According to another aspect of the present invention, an air conditioner is provided, the air conditioner including a compressor, the compressor being the compressor provided above.

[0019] By applying the technical solution of this invention, the rigidity of the vane groove is reduced by setting a buffer groove. This makes the groove wall surface more susceptible to deformation under stress and heat during vane movement, thereby reducing wear between the vane and the vane groove it contacts. Therefore, the cylinder structure provided in this embodiment solves the technical problem of severe vane damage in existing compressors. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 A schematic diagram of a cylinder structure according to Embodiment 1 of the present invention is shown;

[0022] Figure 2 A schematic diagram of the movement of rollers and vanes within a cylinder structure according to an embodiment of the present invention is shown;

[0023] Figure 3 A dimensional schematic diagram of a cylinder structure provided according to Embodiment 1 of the present invention is shown;

[0024] Figure 4 A schematic diagram of the cylinder structure provided according to Embodiment 2 of the present invention is shown;

[0025] Figure 5 A schematic diagram of the compressor provided according to Embodiment 3 of the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 10. Cylinder; 11. Compression chamber; 12. Sliding vane groove; 121. Strip groove segment; 122. Groove bottom hole; 13. Buffer groove; 131. First buffer groove; 1311. First groove segment; 1312. Second groove segment; 132. Second buffer groove; 1321. Third groove segment; 1322. Fourth groove segment; 14. Connecting hole; 141. First connecting hole; 142. Second connecting hole; 15. Exhaust port; 20. Sliding vane; 30. Roller; 40. Housing; 50. Motor section; 60. Pump body assembly. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 5 As shown, an embodiment of the present invention provides a cylinder structure, which includes a cylinder 10. The cylinder 10 is provided with a compression chamber 11 and a sliding vane groove 12. The sliding vane groove 12 communicates with the compression chamber 11, and at least a portion of the sliding vane 20 is movably disposed within the sliding vane groove 12. The cylinder 10 is also provided with a buffer groove 13, which is located on the side of the sliding vane groove 12. The groove wall of the sliding vane groove 12 and the cavity wall of the compression chamber 11 are spaced apart from the buffer groove 13 to reduce the rigidity of the sliding vane groove 12.

[0030] By employing the cylinder structure provided in this embodiment, the rigidity of the vane groove 12 is reduced by setting the buffer groove 13. This makes the groove wall surface of the vane groove 12 more prone to deformation under stress and heat during the movement of the vane 20, thereby reducing the wear between the vane 20 and the vane groove 12 it contacts. Therefore, the cylinder structure provided in this embodiment can solve the technical problem of severe damage to the vane 20 in existing compressors.

[0031] Specifically, in the above embodiment, a connecting hole 14 is also provided on the cylinder 10. One end of the connecting hole 14 is connected to the buffer groove 13, and the other end of the connecting hole 14 is connected to the vane groove 12, so that the buffer groove 13 is connected to the vane groove 12 through the connecting hole 14. This structural arrangement facilitates the timely removal of frictional heat between the vane 20 and the vane groove 12, effectively reducing the amount of frictional heat transferred from both sides of the vane 20 to the central area of ​​the vane 20. This, in turn, effectively reduces the radial expansion of the vane 20, allowing for a smaller design gap between the vane 20 in the pump body assembly and the vane groove 12 of the cylinder 10, thereby improving the sealing performance of the pump body and the energy efficiency of the compressor.

[0032] In this embodiment, the slider groove 12 includes interconnected strip-shaped groove segments 121 and groove bottom holes 122, with the other end of the connecting hole 14 communicating with the groove bottom holes 122. This structural arrangement better reduces heat generation during the movement of the slider 20 and facilitates manufacturing. Specifically, in this embodiment, the groove bottom hole 122 is a circular hole.

[0033] Specifically, in the above embodiment, there are multiple buffer grooves 13, which are spaced apart. There are also multiple connecting holes 14, each corresponding to a buffer groove 13, and each connecting hole 14 communicates with its corresponding buffer groove 13. At least two buffer grooves 13 are located on opposite sides of the slider groove 12. This structural arrangement facilitates better heat dissipation, thus reducing the heat of the slider 20. Preferably, two or more connecting holes can be provided at one buffer groove 13 to further improve heat dissipation from the slider 20.

[0034] In Embodiment 1, the cylinder 10 is further provided with an exhaust port 15, which communicates with the compression chamber 11. The buffer groove 13 includes a first buffer groove 131, which is located on the side of the sliding vane groove 12 away from the exhaust port 15, and extends along the extending direction of the sliding vane groove 12. The connecting hole 14 includes a first connecting hole 141, one end of which communicates with the first buffer groove 131, and the other end of which communicates with the sliding vane groove 12. This structural arrangement facilitates the reduction of the rigidity of one wall of the sliding vane groove 12, thereby reducing wear on the sliding vane 20.

[0035] Specifically, in this embodiment, the first buffer groove 131 includes a first groove segment 1311 and a second groove segment 1312 that are interconnected. The first groove segment 1311 is located on the side of the second groove segment 1312 near the compression chamber 11. Both the first groove segment 1311 and the second groove segment 1312 are square groove structures. The distance between the groove wall of the first groove segment 1311 and the groove wall of the sliding vane groove 12 is L1, and the distance between the groove wall of the second groove segment 1312 and the groove wall of the sliding vane groove 12 is L2, where L1 < L2. This structural arrangement can effectively reduce the structural strength of the first buffer groove 131 on the side near the compression chamber 11, thereby facilitating better reduction of wear on the sliding vane 20 at the end of the sliding vane groove 12.

[0036] In this embodiment, 0.3mm ≤ L1 ≤ 3.5mm. Specifically, when L1 is less than 0.3mm, the structural strength of the sliding groove 12 cannot be effectively guaranteed; when L1 is greater than 3.5mm, it cannot effectively reduce the rigidity of the sliding groove 12. By setting L1 within the above range, both the structural strength of the sliding groove 12 can be effectively guaranteed, and the flexibility of the sliding groove 12 can be improved, thereby facilitating better reduction of wear on the sliding plate 20.

[0037] Specifically, in this embodiment, the distance between the wall of the first groove segment 1311 and the wall of the compression cavity 11 is L4, where L4 > L1. With this structural arrangement, when the roller 30 impacts the compression cavity 11 during its movement, the structural strength of the compression cavity 11 can be effectively guaranteed, avoiding damage between the compression cavity 11 and the groove wall due to impact, thus ensuring structural strength.

[0038] Specifically, the width of the first groove segment 1311 is greater than the width of the second groove segment 1312. Alternatively, the inner and outer wall thicknesses of the cylinder 10 are T1, the length of the first buffer groove 131 is T2, and 1.2 ≤ T1 / T2 ≤ 1.5. Alternatively, the width of the first groove segment 1311 is greater than the width of the second groove segment 1312; the inner and outer wall thicknesses of the cylinder 10 are T1, the length of the first buffer groove 131 is T2, and 1.2 ≤ T1 / T2 ≤ 1.5. Preferably, in this embodiment, the length of the first buffer groove 131 can be the longest length of the first buffer groove 131, that is, the length of the diagonal of the first buffer groove 131.

[0039] Preferably, in this embodiment, the width of the first groove segment 1311 is greater than the width of the second groove segment 1312. Since the first groove segment 1311 is subjected to a greater impact than the second groove segment 1312, the above-mentioned structural arrangement can effectively improve the flexibility of the first groove segment 1311, so as to better buffer the first groove segment 1311 and thus better reduce the wear of the slide plate 20.

[0040] Specifically, in this embodiment, the buffer groove 13 further includes a second buffer groove 132, which is located on the side of the sliding plate groove 12 near the exhaust port 15 and extends along the extending direction of the sliding plate groove 12. The connecting hole 14 also includes a second connecting hole 142, one end of which communicates with the second buffer groove 132, and the other end of which communicates with the sliding plate groove 12. This structural arrangement facilitates a better reduction in the structural strength of the sliding plate groove 12, thereby reducing wear on the sliding plate 20.

[0041] Specifically, in this embodiment, the second buffer groove 132 includes a third groove segment 1321 and a fourth groove segment 1322 that are interconnected. The third groove segment 1321 is located on the side of the fourth groove segment 1322 near the exhaust port 15.

[0042] Specifically, the distance between the third groove segment 1321 and the exhaust port 15 is L3, where L3 > L1. Alternatively, the length of the first buffer groove 131 is T2, and the length of the second buffer groove 132 is T3, where T2 > T3. Alternatively, the distance between the third groove segment 1321 and the exhaust port 15 is L3, where L3 > L1; the length of the first buffer groove 131 is T2, and the length of the second buffer groove 132 is T3, where T2 > T3.

[0043] Preferably, in this embodiment, the distance between the third groove segment 1321 and the exhaust port 15 is L3, where L3 > L1, to improve flexibility while ensuring structural strength, thereby better reducing wear on the sliding plate 20. The length of the first buffer groove 131 is T2, and the length of the second buffer groove 132 is T3, where T2 > T3. Since an oil drain port is provided near the second buffer groove 132, this helps to ensure the structural strength of the first buffer groove 131 while also reducing wear on the sliding plate 20.

[0044] In this embodiment, the cylinder 10 is provided with a first buffer groove 131 and a second buffer groove 132. Both the first buffer groove 131 and the second buffer groove 132 are through groove structures. The main function of the first buffer groove 131 and the second buffer groove 132 is that under load, the reciprocating motion of the slide 20 causes the cylinder 10 to undergo appropriate deformation at the contact part with the slide 20, reducing wear and also helping to form a thicker oil film to prevent leakage.

[0045] Embodiment 2 of the present invention provides a cylinder structure. The difference between the cylinder structure in Embodiment 2 and the cylinder structure in Embodiment 1 lies in the different structures of the first buffer groove 131 and the second buffer groove 132.

[0046] Specifically, the wall of the first buffer groove 131 includes a first arc-shaped surface and a first flat surface. The first flat surface is located on the side of the first arc-shaped surface near the slide groove 12. The width of the first buffer groove 131 at the end near the cavity wall of the compression chamber 11 is greater than the width of the first buffer groove 131 at the end away from the cavity wall of the compression chamber 11. Alternatively, the wall of the second buffer groove 132 includes a second arc-shaped surface and a second flat surface. The second flat surface is located on the side of the second arc-shaped surface near the slide groove 12. The width of the second buffer groove 132 at the end near the cavity wall of the compression chamber 11 is less than the width of the second buffer groove 132 at the end away from the cavity wall of the compression chamber 11. Alternatively, the wall of the first buffer groove 131 includes a first arcuate surface and a first flat surface, the first flat surface being located on the side of the first arcuate surface near the slide groove 12, and the width of the first buffer groove 131 at the end near the cavity wall of the compression chamber 11 being greater than the width of the first buffer groove 131 at the end away from the cavity wall of the compression chamber 11; the wall of the second buffer groove 132 includes a second arcuate surface and a second flat surface, the second flat surface being located on the side of the second arcuate surface near the slide groove 12, and the width of the second buffer groove 132 at the end near the cavity wall of the compression chamber 11 being less than the width of the second buffer groove 132 at the end away from the cavity wall of the compression chamber 11.

[0047] Preferably, in this embodiment, the wall of the first buffer groove 131 includes a first arc-shaped surface and a first flat surface. The first flat surface is located on the side of the first arc-shaped surface near the sliding plate groove 12. The width of the first buffer groove 131 at the end near the cavity wall of the compression chamber 11 is greater than the width of the first buffer groove 131 at the end away from the cavity wall of the compression chamber 11. This structural arrangement effectively reduces the structural rigidity of the sliding plate groove 12 and also reduces the structural stress at the wall of the first buffer groove 131, thereby improving the structural strength of the first buffer groove 131. The wall of the second buffer groove 132 includes a second arc-shaped surface and a second flat surface. The second flat surface is located on the side of the second arc-shaped surface near the sliding plate groove 12. The width of the second buffer groove 132 at the end near the cavity wall of the compression chamber 11 is less than the width of the second buffer groove 132 at the end away from the cavity wall of the compression chamber 11. This structural design effectively reduces the structural rigidity of the sliding groove 12 and also reduces the structural stress at the wall of the second buffer groove 132, thereby ensuring the structural strength of the second buffer groove 132.

[0048] The cylinder structure in Embodiments 1 and 2 can reduce wear, prevent leakage, and thus improve compressor energy efficiency; improve compressor reliability and meet the needs of high-efficiency compressor development; effectively reduce the radial expansion of the vane 20 and ensure the design clearance between the vane 20 and the vane groove 12 of the cylinder 10 in the pump body assembly.

[0049] Embodiment 3 of the present invention provides a compressor, which includes a cylinder structure, a housing 40, a motor unit 50, and a pump body assembly 60. The cylinder structure is the same as that provided in Embodiment 1 or Embodiment 2. This embodiment provides a high-efficiency and high-reliability rotary compressor, and also provides a cylinder structure for the pump body of the compressor. The compressor operates as follows: the cylinder 10, combined with the upper flange, lower flange, or partition, forms a working chamber within the cylinder body. The roller 30 is eccentrically disposed within the cylinder body. The vane 20 cooperates with the roller 30 to divide the cylinder body into an intake side and an exhaust side. During the eccentric movement of the roller 30 driven by the crankshaft, air is drawn in from the intake side and discharged from the exhaust port 15. The vane 20 is installed in the vane groove 12 of the cylinder 10 and maintains contact with the roller 30 under the action of spring force and air pressure, reciprocating along the vane groove 12. The present invention provides a cylinder 10 as shown in the figure. The cylinder 10 technical solution consists of a first buffer groove 131, a second buffer groove 132, a first connecting hole 141, and a second connecting hole 142. The main function of the first buffer groove 131 and the second buffer groove 132 is that, under load, the reciprocating motion of the slide 20 causes the cylinder 10 to undergo appropriate deformation at the contact part with the slide 20, thereby reducing wear and also helping to form a thicker oil film to prevent leakage.

[0050] Specifically, on the one hand, due to the setting of the first buffer groove 131 and the second buffer groove 132 in the cylinder 10, the corresponding wall thickness L1 is reduced, which makes the two side walls of the cylinder 10 sliding vane groove 12 more prone to deformation under stress and heat (the wall stiffness is reduced and the flexibility is increased), thereby reducing the wear degree between the two side walls of the sliding vane 20 and the cylinder 10 sliding vane groove 12 in contact with it; on the other hand, in the prior art, in the roller 30 type compressor, the head of the sliding vane 20 abuts against the outer peripheral wall of the roller 30, and in actual operation, the sliding vane 20 will be offset in the axial direction of the roller 30 due to the uneven load, which will lead to more severe wear at the radial end of the sliding vane 20 and the sliding vane groove 12. The cylinder structure of the present invention includes a first buffer groove 131 and a second buffer groove 132 in the cylinder 10. When the slide plate 20 moves within the compression chamber 11 of the cylinder 10, it is subjected to the pressure difference of the gas on both sides, causing it to deviate. During this deviation, the friction between the side walls of the slide plate 20 and the slide plate groove 12 intensifies. Therefore, a first through groove and a second through groove are provided at corresponding positions in the slide plate groove 12 of the cylinder 10. For ease of description, the end of the slide plate groove 12 near the compression chamber 11 (inner cavity) is defined as the front part of the cylinder 10, and the end away from the compression chamber 11 (inner cavity) is defined as the rear part of the cylinder 10. The wall thickness of the front part of the first through groove and the slide plate groove 12 is L1, and the wall thickness of the rear part of the first through groove and the slide plate groove 12 is L1. The wall thickness of the vane groove 12 is L2, where L2 > L1. The wall thickness of the corresponding position of the second through groove is as described above (to increase flexibility). At the same time, the first connecting hole 141 and the second connecting hole 142 are opened to connect the bottom hole 122 of the cylinder 10. Therefore, the frictional heat between the vane 20 and the vane groove 12 of the cylinder 10 can be removed in time. This can effectively reduce the amount of frictional heat transferred from the two side walls of the vane 20 to the middle region of the vane 20, thereby effectively reducing the radial expansion of the vane 20. This allows the design gap between the vane 20 and the vane groove 12 of the cylinder 10 in the pump body assembly to be smaller, which is beneficial to improving the sealing performance of the pump body and the energy efficiency of the compressor.

[0051] Preferably, the wall thickness of the front part of the first through groove and the sliding vane groove 12 is L1, 0.3mm≤L1≤3.5mm; the wall thickness of the front part of the first through groove and the inner wall thickness of the cylinder 10 is L4; and the wall thickness of the front part of the second through groove and the exhaust port is L3. Preferably, L3>L1, L4>L1; further, L3>1mm, L4>1mm, to ensure structural rigidity. The inner and outer wall thicknesses of the cylinder 10 are T1; the front and rear lengths of the first through groove of the cylinder 10 are T2, 1.2≤T1 / T2≤1.5; and the front and rear lengths of the second through groove of the cylinder 10 are T3, T2>T3, to avoid the exhaust port 15. The above dimensions can ensure that the ring wall can achieve large flexible deformation while also possessing a certain degree of structural rigidity. Correspondingly, in the cylinder 10 sliding vane groove 12, two through slots are located on the radial sides of the cylinder 10 sliding vane groove 12. This gives both sides of the cylinder 10 sliding vane groove 12 a flexible structure, which can provide flexible protection for both sides of the cylinder 10 sliding vane groove 12, reduce wear on both sides of the cylinder 10 sliding vane groove 12, and further reduce the radial expansion of the vane 20. The cylinder 10 has a first connecting hole 141 and a second connecting hole 142 connecting to the bottom hole 122 of the cylinder 10 groove. The number of the first connecting hole 141 and the second connecting hole 142 is at least one, which plays a role in timely dissipating the frictional heat between the vane 20 and the cylinder 10 sliding vane groove 12.

[0052] For ease of description, the end of the cylinder 10 slide groove 12 near the compression chamber 11 (inner cavity) is defined as the front part of the cylinder 10, and the end away from the compression chamber 11 (inner cavity) is defined as the rear part of the cylinder 10. The wall thickness of the front part of the first through groove and the slide groove 12 is L1, and the wall thickness of the rear part of the first through groove and the slide groove 12 is L2, where L2 > L1. The arrangement of the first buffer groove 131 and the second buffer groove 132 can improve the flexibility of the radial ends of the slide 20, thereby reducing the wear between the radial ends of the slide 20 and the slide groove 12. Preferably, the first buffer groove 131 and the second buffer groove 132 are connected.

[0053] This proposal specifies the axial dimension of the grooves inside the cylinder 10. This serves two main purposes: first, to ensure sufficient flexibility in the flexible structure, allowing for greater deformation; and second, to prevent excessively large axial dimensions of the grooves, which could lead to a decrease in the load-bearing capacity of the cylinder 10. The bottom and side walls of each groove should have a smooth transition to prevent stress concentration between them. This significantly improves the elastic recovery of the cylinder 10's side walls, prevents alternating fracture at the intersection, and extends the service life of the cylinder 10.

[0054] When the compressor of this invention uses the cylinder 10 of the second embodiment, the radial shape of the first buffer groove 131 and the second buffer groove 132 is changed to an elliptical + square shape (the contact position of the sliding vane groove 12 is square when the sliding vane 20 is offset, so that its wall thickness is reduced and its flexibility is improved), which avoids the phenomenon of stress concentration during processing compared with the previous all-square shape. Its radial shape can also be other shapes, which can be improved according to specific needs. It is necessary to ensure the flexibility of the contact position of the sliding vane groove 12 when the sliding vane 20 is offset, as well as the rigidity of the cylinder structure.

[0055] Embodiment 4 of the present invention provides an air conditioner, which includes a compressor, the compressor being the compressor provided in Embodiment 3.

[0056] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: The present invention provides a high-efficiency, low-noise, and highly reliable rotary compressor, and also provides a cylinder structure for the pump body of the compressor. On the one hand, it effectively reduces the radial expansion of the vane, which allows for a smaller design gap between the vane and the cylinder vane groove in the pump body assembly, thereby improving the sealing performance of the pump body and the energy efficiency of the compressor. On the other hand, it effectively improves the stress condition of the vane's side walls and the vane groove, reducing wear on the vane's side walls and the vane groove, thus increasing the reliability of the rotary compressor. It avoids the drawback of reduced energy efficiency caused by increasing the gap between the vane and the vane groove to enhance lubrication.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0059] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0060] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0061] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cylinder structure, characterized in that, include: A cylinder (10) is provided with a compression chamber (11) and a sliding vane groove (12), and the sliding vane groove (12) is connected to the compression chamber (11); The cylinder (10) is also provided with a buffer groove (13), which is located on the side of the sliding vane groove (12). The groove wall of the sliding vane groove (12) and the cavity wall of the compression chamber (11) are spaced apart from the buffer groove (13) so as to reduce the rigidity of the sliding vane groove (12) through the buffer groove (13). The cylinder (10) is also provided with a connecting hole (14), one end of the connecting hole (14) is connected to the buffer groove (13), and the other end of the connecting hole (14) is connected to the sliding plate groove (12), so that the buffer groove (13) is connected to the sliding plate groove (12) through the connecting hole (14); The cylinder (10) is also provided with an exhaust port (15), which is connected to the compression chamber (11); the buffer groove (13) includes a first buffer groove (131), which is located on the side of the sliding vane groove (12) away from the exhaust port (15), and the first buffer groove (131) extends along the extension direction of the sliding vane groove (12); the connecting hole (14) includes a first connecting hole (141), one end of the first connecting hole (141) is connected to the first buffer groove (131), and the other end of the first connecting hole (141) is connected to the sliding vane groove (12); The first buffer groove (131) includes a first groove segment (1311) and a second groove segment (1312) that are interconnected. The first groove segment (1311) is located on the side of the second groove segment (1312) close to the compression chamber (11). The distance between the groove wall of the first groove segment (1311) and the groove wall of the sliding plate groove (12) is L1, and the distance between the groove wall of the second groove segment (1312) and the groove wall of the sliding plate groove (12) is L2, where L1 < L2.

2. The cylinder structure according to claim 1, characterized in that, The sliding groove (12) includes interconnected strip groove segments (121) and groove bottom holes (122), and the other end of the connecting hole (14) is connected to the groove bottom holes (122).

3. The cylinder structure according to claim 1, characterized in that, There are multiple buffer grooves (13), which are spaced apart. There are multiple connecting holes (14), which are arranged one-to-one with the multiple buffer grooves (13). Each connecting hole (14) is connected to the corresponding buffer groove (13). At least two buffer grooves (13) are located on both sides of the sliding plate groove (12).

4. The cylinder structure according to claim 1, characterized in that, Both the first groove segment (1311) and the second groove segment (1312) are square groove structures.

5. The cylinder structure according to claim 1, characterized in that, 0.3mm≤L1≤3.5mm.

6. The cylinder structure according to claim 1, characterized in that, The distance between the wall of the first groove segment (1311) and the wall of the compression cavity (11) is L4, where L4 > L1.

7. The cylinder structure according to claim 4, characterized in that, The width of the first slot segment (1311) is greater than the width of the second slot segment (1312); and / or, The inner and outer wall thickness of the cylinder (10) is T1, and the length of the first buffer groove (131) is T2, 1.2≤T1 / T2≤1.

5.

8. The cylinder structure according to claim 1, characterized in that, The buffer groove (13) includes a second buffer groove (132), which is located on the side of the slide groove (12) near the exhaust port (15) and extends along the extension direction of the slide groove (12); the connecting hole (14) includes a second connecting hole (142), one end of which is connected to the second buffer groove (132) and the other end of which is connected to the slide groove (12).

9. The cylinder structure according to claim 8, characterized in that, The first buffer groove (131) has a groove wall comprising a first arcuate surface and a first flat surface. The first flat surface is located on the side of the first arcuate surface near the slide groove (12). The groove width of the first buffer groove (131) at the end near the cavity wall of the compression chamber (11) is greater than the groove width of the first buffer groove (131) at the end away from the cavity wall of the compression chamber (11); and / or, The second buffer groove (132) has a second arcuate surface and a second plane. The second plane is located on the side of the second arcuate surface that is close to the slide groove (12). The width of the second buffer groove (132) at the end close to the cavity wall of the compression cavity (11) is smaller than the width of the second buffer groove (132) at the end away from the cavity wall of the compression cavity (11).

10. The cylinder structure according to claim 8, characterized in that, The second buffer groove (132) includes a third groove segment (1321) and a fourth groove segment (1322) that are interconnected. The third groove segment (1321) is located on the side of the fourth groove segment (1322) near the exhaust port (15). The distance between the third groove segment (1321) and the exhaust port (15) is L3, where L3 > L1; and / or, The length of the first buffer groove (131) is T2, and the length of the second buffer groove (132) is T3, where T2 > T3.

11. A compressor, characterized in that, The compressor includes a cylinder structure, which is the cylinder structure according to any one of claims 1 to 10.

12. An air conditioner, characterized in that, The air conditioner includes a compressor, which is the compressor described in claim 11.

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