Rollers, pump components, compressors

Abstract

The present invention provides a roller, a pump assembly, and a compressor. The roller includes a roller body, at least one end of the roller body is provided with a first annular groove, and an end plate, and a deformation portion is provided between the end plate and the first groove bottom wall of the first annular groove. The present invention provides a roller, a pump assembly, and a compressor, at least one end of the roller has an end plate, and an elastic deformation member is provided between the end plate and the roller body, which can effectively reduce the degree of wear.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor manufacturing, and in particular relates to a roller, a pump body assembly, and a compressor. Background Art

[0002] The rotor compressor roller is one of the core components of the compressor pump body. During the operation of the compressor, it simultaneously moves and rubs against the upper and lower flange end faces (or the flange and the partition end faces) and the vane head, causing the roller temperature to rise and causing large thermal deformation in the axial direction, thereby reducing the axial clearance between the roller and the mating end faces on both sides (the upper and lower flange end faces or the flange and the partition end faces), and ultimately causing serious wear between the roller and the flange end faces or the partition end faces. In order to make up for the above-mentioned shortcomings, compressor manufacturers usually enlarge the axial design clearance between the roller and the upper and lower flanges (or partitions), but this method has the disadvantage of low compressor energy efficiency. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a roller, a pump body assembly, and a compressor, wherein at least one end of the roller has an end plate, and an elastic deformation part is provided between the end plate and the roller body, which can effectively reduce the degree of wear.

[0004] In order to solve the above problems, the present invention provides a roller, including a roller body, wherein at least one axial end of the roller body is provided with a first annular groove, and also includes an end plate, wherein a deformation portion is provided between the end plate and a first groove bottom wall of the first annular groove.

[0005] Preferably, the deformation portion comprises a spring.

[0006] Preferably, a first mounting column is provided on the side of the end plate facing the roller body, and / or a second mounting column is provided on the side of the first groove bottom wall facing the end plate, and the spring is sleeved on the first mounting column and / or the second mounting column.

[0007] Preferably, the height of the first mounting column is H1, the height of the second mounting column is H2, the height of the annular wall on the roller body corresponding to the first annular groove is H4, and H4-H1-H2>0.

[0008] Preferably, 0.1 mm ≤ H4 - H1 - H2 ≤ 2 mm.

[0009] Preferably, the radial thickness of the annular wall is t, and t≥1 mm.

[0010] Preferably, the deformation portion includes a rod constructed on a side of the end plate facing the roller body, and the first groove bottom wall has a hole corresponding to and matching the rod.

[0011] Preferably, a second annular groove is further formed on the bottom wall of the first groove, and the second annular groove is arranged concentrically with the first annular groove.

[0012] Preferably, the thickness of the end plate is H, H≥mm; and / or the side of the end plate away from the roller body has a wear-resistant layer.

[0013] Preferably, a third annular groove is further provided on the inner side wall of the annular wall on the roller body corresponding to the first annular groove, and the third annular groove extends outwardly in the radial direction of the roller body.

[0014] Preferably, the deformation portions include at least three groups; and / or the deformation portions include at least three groups, and the three groups of deformation portions are evenly spaced apart along the circumference of the roller body.

[0015] The present invention also provides a pump body assembly, comprising the above-mentioned roller.

[0016] The present invention also provides a compressor, comprising the above-mentioned pump body assembly.

[0017] The present invention provides a roller, a pump body assembly, and a compressor, wherein the deformation portion is provided between the end plate and the bottom wall of the first groove. When the flanges or partitions at both ends of the roller body apply force to the end of the roller body, at this time, on the one hand, due to the provision of the first annular groove at the end of the roller body, the thickness of the annular wall corresponding thereto becomes smaller, thereby making it easier for the annular wall to deform in the direction of the force (that is, the rigidity of the annular wall is reduced and the flexibility is increased), thereby reducing the degree of wear between the free end face of the annular wall and the flange or partition in contact therewith. On the other hand, the end plate in the first annular groove (which can also be understood as being in the annular wall) can be more easily deformed in the direction of the force under the action of external force due to the provision of the deformation portion between it and the bottom wall of the first groove, which also forms a certain Flexibility, thereby reducing the degree of wear between the free end face of the annular wall and the flange or partition in contact with it, that is, the axial flexibility of the roller of the present invention is improved, so that the axial design gap can be designed to be smaller, and the wear between the roller end face and the contacted parts is effectively reduced; on the other hand, in the prior art, the vane head in the roller compressor is in contact with the outer peripheral wall of the roller, and in the actual operation process, the vane will be offset in the axial direction of the roller due to the unbalanced load, which will cause the vane to wear more seriously at the axial end of the roller, and when the technical solution of the present invention is adopted, the end of the roller body is provided with the first annular groove, so the corresponding annular wall also has radial flexibility, therefore, at this time, the wear of the vane at the axial end of the roller can be more effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1is a schematic diagram of the three-dimensional structure of a roller according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0020] Figure 3 for Figure 1 Schematic diagram of the decomposition structure;

[0021] Figure 4 A schematic diagram of the internal structure of a roller according to another embodiment of the present invention;

[0022] Figure 5 for Figure 3 Schematic diagram of the decomposition structure;

[0023] Figure 6 A schematic structural diagram of a roller body in a roller according to another embodiment of the present invention;

[0024] Figure 7 The figure is a schematic structural diagram of a roller body in a roller according to another embodiment of the present invention.

[0025] The reference numerals are:

[0026] 1. Roller body; 11. First annular groove; 12. First groove bottom wall; 121. Second mounting post; 122. Hole; 123. Second annular groove; 13. Annular wall; 131. Third annular groove; 2. End plate; 21. First mounting post; 3. Deformation portion; 31. Spring; 32. Rod. DETAILED DESCRIPTION

[0027] See also Figures 1 to 7As shown, according to an embodiment of the present invention, a roller is provided, including a roller body 1, wherein at least one axial end of the roller body 1 is provided with a first annular groove 11, and also includes an end plate 2, wherein a deformation portion 3 is provided between the end plate 2 and a first groove bottom wall 12 of the first annular groove 11. In this technical solution, the deformation portion 3 is arranged between the end plate 2 and the first groove bottom wall 12. When the flanges or partitions at both ends of the roller body 1 apply force to the end of the roller body 1, at this time, on the one hand, due to the arrangement of the first annular groove 11 at the end of the roller body 1, the thickness of the corresponding annular wall 13 becomes smaller, so that the deformation of the annular wall 13 in the direction of the force is easier (that is, the rigidity of the annular wall 13 is reduced and the flexibility is increased), thereby reducing the degree of wear between the free end face of the annular wall 13 and the flange or partition in contact with it. On the other hand, the end plate 2 in the first annular groove 11 (it can also be understood as being in the annular wall 13) can be more easily deformed in the direction of the force under the action of external force due to the arrangement of the deformation portion 3 between it and the first groove bottom wall 12, thus forming a A certain flexibility can be achieved, thereby reducing the degree of wear between the free end face of the annular wall 13 and the flange or partition in contact with it, that is, the axial flexibility of the roller of the present invention is improved, so that the axial design gap can be designed to be smaller, and the wear between the roller end face and the contacted parts is effectively reduced; on the other hand, in the prior art, the vane head in the roller compressor is in contact with the outer peripheral wall of the roller, and in the actual operation process, the vane will be offset in the axial direction of the roller due to the unbalanced load, which will cause the vane to wear more seriously at the axial end of the roller. When the technical solution of the present invention is adopted, the end of the roller body 1 is provided with the first annular groove 11, so the corresponding annular wall 13 also has radial flexibility. Therefore, at this time, the wear of the vane at the axial end of the roller can be more effectively reduced. More specifically, as Figure 1 and Figure 4 As shown, the first annular groove 11 is provided at both axial ends of the roller body 1, the end plates 2 are provided in the first annular grooves 11, and the deformation portions 3 are provided between the end plates 2 and the first groove bottom wall 12. Preferably, the deformation portions 3 have at least three groups, and the three groups of deformation portions 3 are evenly spaced along the circumference of the roller body 1 to ensure stable support for the end plates 2. The three groups of deformation portions 3 are evenly spaced along the circumference of the roller body 1, and for example, they can also be set to four groups.

[0028] As a specific implementation, preferably, the deformation portion 3 includes a spring 31, and a plurality of springs 31 are arranged in an array between the end plate 2 and the first groove bottom wall 12. At this time, there is a gap between the end plate 2 and the first groove bottom wall 12 instead of direct contact. At this time, the local heat generated between the end plate 2 and the parts in contact with it can be effectively isolated, which effectively reduces the axial deformation caused by the thermal load at the end face of the roller body, and can further reduce the axial design gap between the roller and the contact part, reduce the leakage inside the pump body assembly, and improve the energy efficiency of the compressor.

[0029] Further, in order to ensure the position reliability of the spring, preferably, the end plate 2 is provided with a first mounting column 21 on the side facing the roller body 1, and / or the first groove bottom wall 12 is provided with a second mounting column 121 on the side facing the end plate 2, and the spring 31 is sleeved on the first mounting column 21 and / or the second mounting column 121. In order to ensure the floating flexibility design of the end plate 2 relative to the roller body 1, the height of the first mounting column 21 is H1, the height of the second mounting column 121 is H2, and the height of the annular wall 13 on the roller body 1 corresponding to the first annular groove 11 is H4, and H4-H1-H2>0. Furthermore, 0.1mm≤H4-H1-H2≤2mm.

[0030] As another optional embodiment of the deformation portion 3, the deformation portion 3 includes a rod 32 constructed on the side of the end plate 2 facing the roller body 1, and the first groove bottom wall 12 has a hole 122 corresponding to the rod 32. The rod 32 can be integrally formed with the end plate 2, or can be detachably connected to the end plate 2. At this time, the design purpose of the rod 32 is also to provide a support member with a certain flexibility, which utilizes the slender shape of the rod 32 to achieve deflection deformation, thereby achieving the floating connection between the end plate 2 and the parts in contact therewith. The beneficial effect achieved is similar to the technical solution in which the deformation portion 3 includes a spring, which will not be repeated here. The principle of reducing wear is also consistent with that of the spring. The difference is that the deformation in this technical solution relies on the deflection deformation of the rod 32, while the spring relies on its telescopic deformation.

[0031] Furthermore, in order to simultaneously reduce the possible degree of wear between the eccentric parts of the crankshaft in the roller body 1, preferably, a second annular groove 123 is also constructed on the first groove bottom wall 12, and the second annular groove 123 is arranged concentrically with the first annular groove 11. By constructing the second annular groove 123 on the first groove bottom wall 12, the wall thickness of the upper and lower ends of the inner hole wall that cooperates with the eccentric part of the crankshaft can be reduced, thereby improving the flexibility of the upper and lower ends, and then achieving a corresponding wear reduction effect.

[0032] The thickness of the end plate 2 is H3, H3 ≥ 1mm, to ensure that the end plate 2 has sufficient strength. Preferably, the side of the end plate 2 away from the roller body 1 has a wear-resistant layer to improve the wear resistance of the end plate 2. The wear-resistant layer can be obtained by, for example, phosphating the end of the end plate 2, or by corresponding coating, such as coating with resin wear-resistant material, etc. Of course, the entire end plate 2 can also be made of wear-resistant material.

[0033] Furthermore, a third annular groove 131 is provided on the inner side wall of the annular wall 13 corresponding to the first annular groove 11 on the roller body 1, and the third annular groove 131 extends radially outwardly along the roller body 1. This design can further enhance the axial and radial deformation capabilities of the annular wall 13 while ensuring the sealing width (sealing distance) of the free end face of the annular wall 13, thereby further reducing the degree of wear between the friction pairs.

[0034] In order to ensure the structural rigidity and sealing distance of the annular wall 13 , preferably, the radial thickness of the annular wall 13 is t1 , and t1 ≥ 1 mm.

[0035] It is worth mentioning that in the present technical solution, due to the design of the first annular groove 11, the second annular groove 123 and the third annular groove 131, the lubricating oil can be stored, which can help reduce the degree of wear between the roller body 1 and the eccentric part of the crankshaft. At the same time, the overall mass of the roller is reduced, and a lightweight design of the roller is achieved, which can reduce the centrifugal load at the eccentric part during the operation of the crankshaft, effectively reduce the vibration of the compressor, and reduce the material cost of the roller.

[0036] According to an embodiment of the present invention, a pump body assembly is also provided, comprising the above-mentioned roller.

[0037] According to an embodiment of the present invention, there is also provided a compressor, comprising the above-mentioned pump body assembly.

[0038] According to an embodiment of the present invention, a refrigerator is further provided, comprising the above compressor. It is easy for a person skilled in the art to understand that, under the premise of no conflict, the above advantageous methods can be freely combined and superimposed.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A roller, characterized in that: The invention comprises a roller body (1), wherein at least one axial end of the roller body (1) is provided with a first annular groove (11), and an end plate (2), wherein a deformation portion (3) is provided between the end plate (2) and a first groove bottom wall (12) of the first annular groove (11); the deformation portion (3) comprises a rod (32) constructed on a side of the end plate (2) facing the roller body (1), and the first groove bottom wall (12) has a hole (122) corresponding to the rod (32), and the slender shape of the rod (32) is used to achieve deformation of the deflection, thereby enabling the end plate (2) to be connected to a component in contact with the end plate (2) in a floating manner.

2. The roller according to claim 1, characterized in that A second annular groove (123) is also formed on the first groove bottom wall (12), and the second annular groove (123) is arranged concentrically with the first annular groove (11).

3. The roller according to any one of claims 1 to 2, characterized in that The thickness of the end plate (2) is H3, H3 ≥ 1 mm; and / or the side of the end plate (2) away from the roller body (1) has a wear-resistant layer.

4. The roller according to any one of claims 1 to 2, characterized in that A third annular groove (131) is further provided on the inner side wall of the annular wall (13) on the roller body (1) corresponding to the first annular groove (11), and the third annular groove (131) extends outwardly in the radial direction of the roller body (1).

5. The roller according to any one of claims 1 to 2, characterized in that The deformation parts (3) have at least three groups.

6. The roller according to any one of claims 1 to 2, characterized in that The deformation portions (3) have at least three groups, and the three groups of deformation portions (3) are evenly spaced along the circumference of the roller body (1).

7. A pump assembly, comprising a roller, characterized in that: The roller is the roller according to any one of claims 1 to 5.

8. A compressor, comprising a pump assembly, characterized in that: The pump body assembly is the pump body assembly according to claim 7.

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