A cylinder assembly, a pump body structure and a compressor

Abstract

The utility model relates to a kind of cylinder assembly, pump body structure and compressor, cylinder assembly includes cylinder body, piston, slider, spring, and cylinder body is opened with compression cavity along its axial direction direction, piston is rotatably set in compression cavity, and the outer peripheral wall of piston and the inner peripheral wall of compression cavity are abutted, and cylinder body is formed from the inner peripheral wall of compression cavity radially outward recess and is formed for the radial sliding of slider sliding slot, slider is abutted in the outer side of radial direction by spring in the one end of sliding slot away from compression cavity;The inner side of slider in radial direction is cylindrical head, and arc-shaped notch is formed with recess on the outer peripheral wall of piston inward, and arc-shaped notch is through the axial both ends of piston, and the outer peripheral wall of cylindrical head and / or the inner peripheral wall of arc-shaped notch recess is opened and is provided with oil reservoir.The cylinder assembly of the utility model can effectively improve the lubricating effect between slider and piston, reduce the wear of component, and then improve the performance and reliability of compressor.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a cylinder assembly, pump body structure and compressor. Background Technology

[0002] A rotary compressor generally consists of a housing and a pump body and a motor housed within the housing. The pump body includes an upper bearing, a cylinder, a lower bearing, a crankshaft, a rotor piston, and a slider. The upper and lower bearings are respectively located on the upper and lower end faces of the cylinder, forming a compression chamber for compressing the refrigerant. The rotor piston is fitted onto the crankshaft and movably positioned within the compression chamber. The compression chamber of the cylinder has a radially outward-facing groove for the slider to slide in. The inner side of the slider abuts against the rotor piston in the radial direction, while the outer side of the slider is connected to the outer side of the groove via a telescopic spring. The crankshaft drives the rotor piston to rotate circumferentially, pushing the slider to slide radially within the groove. The telescopic spring's extension and retraction ensures that the inner side of the slider always abuts against the outer side of the rotor piston.

[0003] During the operation of the piston and slider, friction occurs between the inner side of the slider and the outer peripheral wall of the piston, making it one of the most wear-prone parts of the pump body. Therefore, efficient operation of the compressor depends on good lubrication between the piston and slider. However, traditional lubrication methods, such as oil bath lubrication and splash lubrication, generally cannot ensure that the contact surface between the slider and piston is always well lubricated. This can easily lead to dry friction or boundary friction between the two, thereby increasing energy loss and component wear. Utility Model Content

[0004] Based on this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a cylinder assembly, pump body structure and compressor, which can effectively improve the lubrication effect between the slider and the piston, reduce the wear of components, and thus improve the performance and reliability of the compressor.

[0005] To achieve the above objectives, a first aspect of this utility model provides a cylinder assembly, including a cylinder body, a piston, a slider, and a spring. The cylinder body has a compression chamber extending through it along its axial direction. The piston is rotatably disposed in the compression chamber, and the outer peripheral wall of the piston abuts against the inner peripheral wall of the compression chamber. The cylinder body is recessed radially outward from the inner peripheral wall of the compression chamber to form a groove for the slider to slide radially. The slider abuts against the end of the groove away from the compression chamber on its radially outer side via the spring.

[0006] The slider has a cylindrical head on its inner side in the radial direction. The outer peripheral wall of the piston has an inwardly recessed arc-shaped notch that penetrates both ends of the piston in the axial direction. The outer peripheral wall of the cylindrical head and / or the inner peripheral wall of the arc-shaped notch are recessed to form an oil storage groove.

[0007] Therefore, the cylinder assembly according to this utility model embodiment has an arc-shaped notch formed radially inward on the outer peripheral wall of the piston, and a cylindrical head formed on the inner side of the slider in the radial direction. In this way, an oil storage groove is recessed on the inner peripheral wall of the arc-shaped notch, or on the outer peripheral wall of the cylindrical head, or on both the inner peripheral wall of the arc-shaped notch and the outer peripheral wall of the cylindrical head. This can effectively reduce the contact area between the piston and the slider, and at the same time, the oil storage groove can store a small amount of lubricating oil, so that the contact surface between the piston and the slider can be well lubricated, thereby effectively reducing the friction of the contact surface, thereby reducing the wear of the components, improving the service life of the components and the performance of the compressor.

[0008] In one embodiment, the length of the cylindrical head in the axial direction is equal to the length of the slider in the axial direction, the arc-shaped notch on both sides in the circumferential direction smoothly transitions to the outer peripheral wall of the piston, and the radius of the arc-shaped notch is greater than the radius of the cylindrical head.

[0009] In one embodiment, the oil storage tank is one of a square tank, a spiral tank, an arc-shaped tank, or an inclined tank.

[0010] In one embodiment, a plurality of oil storage grooves are recessed on the outer peripheral wall of the cylindrical head, and the plurality of oil storage grooves are evenly distributed on the outer peripheral wall of the cylindrical head.

[0011] In one embodiment, a plurality of oil storage grooves are recessed on the inner peripheral wall of the arc-shaped notch, and the plurality of oil storage grooves are evenly distributed on the inner peripheral wall of the arc-shaped notch.

[0012] In one embodiment, the outer peripheral wall of the cylindrical head and the inner peripheral wall of the arc-shaped notch are both recessed and provided with a plurality of oil storage grooves, and the plurality of oil storage grooves on the outer peripheral wall of the cylindrical head are evenly distributed, and the plurality of oil storage grooves on the inner peripheral wall of the arc-shaped notch are evenly distributed.

[0013] In one embodiment, the slider has a groove recessed on one or both end faces in the axial direction, and the length direction of the groove is parallel to the length direction of the slider.

[0014] A second aspect of this utility model provides a pump body structure comprising the cylinder assembly described in any of the preceding embodiments. The pump body structure according to this utility model embodiment can effectively improve the lubrication effect between the slider and the piston, reduce component wear, and thus improve the performance and reliability of the compressor.

[0015] A third aspect of this utility model provides a compressor comprising the pump body structure described in any of the preceding embodiments. The compressor according to this utility model embodiment can effectively improve the lubrication effect between the slider and the piston, reduce component wear, and thus improve the performance and reliability of the compressor.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the cylinder assembly according to an embodiment of the present utility model;

[0018] Figure 2 This is a second schematic diagram of the cylinder assembly according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram showing the connection between the piston and the slider in an embodiment of the present invention;

[0020] Figure 4 This is one of the exploded views of the piston and slider in an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the piston structure according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the slider structure according to an embodiment of the present utility model;

[0023] Figure 7 This is the second exploded view of the piston and slider in an embodiment of the present utility model;

[0024] Figure 8 This is the third exploded view of the piston and slider in an embodiment of the present utility model;

[0025] Figure 9 This is a schematic diagram of the pump body structure according to an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. Cylinder block; 11. Compression chamber; 12. Slide groove; 20. Piston; 21. Arc-shaped notch; 30. Slider; 31. Cylindrical head; 40. Oil reservoir. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In related technologies, during the operation of the piston and slider, friction occurs between the inner side of the slider and the outer peripheral wall of the piston, making it one of the most wear-prone parts of the pump body. Therefore, efficient operation of the compressor depends on good lubrication between the piston and slider. However, traditional lubrication methods such as oil bath lubrication and splash lubrication generally cannot ensure that the contact surface between the slider and piston is always well lubricated. This can easily lead to dry friction or boundary friction between the two, thereby increasing energy loss and component wear.

[0032] Therefore, this utility model provides a cylinder assembly, a pump body structure, and a compressor. The cylinder assembly, pump body structure, and compressor according to this utility model can effectively improve the lubrication effect between the slider 30 and the piston 20, reduce component wear, and thus improve the performance and reliability of the compressor.

[0033] Please see Figures 1 to 8The first aspect of this utility model provides a cylinder assembly, including a cylinder body 10, a piston 20, a slider 30, and a spring. The cylinder body 10 has a compression chamber 11 extending through it in the axial direction. The piston 20 is rotatably disposed in the compression chamber 11, and the outer peripheral wall of the piston 20 abuts against the inner peripheral wall of the compression chamber 11. The cylinder body 10 is recessed radially outward from the inner peripheral wall of the compression chamber 11 to form a groove 12 for the slider 30 to slide radially. The slider 30 abuts against the end of the groove 12 away from the compression chamber 11 on the outer side in the radial direction by a spring. The inner side of the slider 30 is a cylindrical head 31 in the radial direction. The outer peripheral wall of the piston 20 is recessed inward to form an arc-shaped notch 21, which extends through both ends of the piston 20 in the axial direction. The outer peripheral wall of the cylindrical head 31 and / or the inner peripheral wall of the arc-shaped notch 21 are recessed to form an oil reservoir 40.

[0034] Furthermore, in this embodiment of the invention, the length of the cylindrical head 31 in the axial direction is equal to the length of the slider 30 in the axial direction, the arc-shaped notch 21 on both sides in the circumferential direction smoothly transitions to the outer circumferential wall of the piston 20, and the radius of the arc-shaped notch 21 is greater than the radius of the cylindrical head 31.

[0035] Therefore, in the cylinder assembly according to this utility model embodiment, an arc-shaped notch 21 is formed radially inwardly recessed on the outer peripheral wall of the piston 20, and a cylindrical head 31 is formed on the inner side of the slider 30 in the radial direction. In this way, an oil storage groove 40 is recessed on the inner peripheral wall of the arc-shaped notch 21, or on the outer peripheral wall of the cylindrical head 31, or on both the inner peripheral wall of the arc-shaped notch 21 and the outer peripheral wall of the cylindrical head 31. This can effectively reduce the contact area between the piston 20 and the slider 30. At the same time, the oil storage groove 40 can also store a small amount of lubricating oil, so that the contact surface between the piston 20 and the slider 30 can be well lubricated, thereby effectively reducing the friction of the contact surface, reducing the wear of the components, improving the service life of the components and the performance of the compressor.

[0036] In this embodiment of the utility model, the oil storage tank 40 is one of a square tank, a spiral tank, an arc-shaped tank, or an inclined tank.

[0037] Optionally, in some embodiments of this utility model, a plurality of oil storage grooves 40 are recessed on the outer peripheral wall of the cylindrical head 31, and the plurality of oil storage grooves 40 are evenly distributed on the outer peripheral wall of the cylindrical head 31. It is worth understanding that in these embodiments, the number of oil storage grooves 40 can be set according to actual needs, and the distribution of the plurality of oil storage grooves 40 is not limited to a uniform distribution, but can also be other distribution methods.

[0038] Optionally, in some embodiments of this utility model, a plurality of oil storage grooves 40 are recessed on the inner peripheral wall of the arc-shaped notch 21, and the plurality of oil storage grooves 40 are evenly distributed on the inner peripheral wall of the arc-shaped notch 21. It is worth understanding that in these embodiments, the number of oil storage grooves 40 can be set according to actual needs, and the distribution of the plurality of oil storage grooves 40 is not limited to a uniform distribution, but can also be other distribution methods.

[0039] Optionally, in some embodiments of this utility model, the outer peripheral wall of the cylindrical head 31 and the inner peripheral wall of the arc-shaped notch 21 are both recessed and provided with a plurality of oil storage grooves 40, and the plurality of oil storage grooves 40 on the outer peripheral wall of the cylindrical head 31 are evenly distributed, and the plurality of oil storage grooves 40 on the inner peripheral wall of the arc-shaped notch 21 are evenly distributed. It is worth understanding that in these embodiments, the number of oil storage grooves 40 can be set according to actual needs, and the distribution of the plurality of oil storage grooves 40 is not limited to a uniform distribution, but can also be other distribution methods.

[0040] Optionally, in some embodiments of the present invention, the slider 30 has a groove formed in one or both end faces in the axial direction, and the length direction of the groove is parallel to the length direction of the slider 30.

[0041] The following is combined Figures 1 to 6 The following is a detailed description of a specific embodiment of the cylinder assembly according to the present invention. It is worth understanding that the following description is merely exemplary and should not be construed as limiting the present invention.

[0042] This embodiment provides a cylinder assembly, including a cylinder body 10, a piston 20, a slider 30, and a spring. The cylinder body 10 has a compression chamber 11 extending through it along its axial direction. The piston 20 is rotatably disposed in the compression chamber 11, and the outer peripheral wall of the piston 20 abuts against the inner peripheral wall of the compression chamber 11. The cylinder body 10 is radially recessed from the inner peripheral wall of the compression chamber 11 to form a groove 12 for the slider 30 to slide radially. The slider 30 abuts against the groove 12 on its radially outer side, away from the compression chamber, via a spring. One end of 11; the inner side of the slider 30 in the radial direction is a cylindrical head 31, and the outer peripheral wall of the piston 20 is recessed to form an arc-shaped notch 21, which penetrates both ends of the piston 20 in the axial direction. The outer peripheral wall of the cylindrical head 31 and the inner peripheral wall of the arc-shaped notch 21 are both recessed and provided with a number of oil storage grooves 40. The number of oil storage grooves 40 on the outer peripheral wall of the cylindrical head 31 are evenly spaced along the axial direction, and the number of oil storage grooves 40 on the inner peripheral wall of the arc-shaped notch 21 are evenly spaced along the axial direction.

[0043] In this embodiment, the oil storage tank 40 is a square tank, the length of the cylindrical head 31 in the axial direction is equal to the length of the slider 30 in the axial direction, the arc-shaped notch 21 on both sides in the circumferential direction is smoothly transitioned to the outer peripheral wall of the piston 20, and the radius of the arc-shaped notch 21 is greater than the radius of the cylindrical head 31.

[0044] Therefore, in the cylinder assembly according to this utility model embodiment, an arc-shaped notch 21 is formed radially inwardly recessed on the outer peripheral wall of the piston 20, and a cylindrical head 31 is formed on the inner side of the slider 30 in the radial direction. In this way, oil storage grooves 40 are recessed on the inner peripheral wall of the arc-shaped notch 21 and the outer peripheral wall of the cylindrical head 31, respectively. This can effectively reduce the contact area between the piston 20 and the slider 30, and at the same time, the oil storage grooves 40 can store a small amount of lubricating oil, so that the contact surface between the piston 20 and the slider 30 can be well lubricated, thereby effectively reducing the friction of the contact surface, thereby reducing the wear of the components, improving the service life of the components and the performance of the compressor.

[0045] The following is combined Figures 1 to 3 , Figure 7 The following is a detailed description of a specific embodiment of the cylinder assembly according to the present invention. It is worth understanding that the following description is merely exemplary and should not be construed as limiting the present invention.

[0046] This embodiment provides a cylinder assembly, including a cylinder body 10, a piston 20, a slider 30, and a spring. The cylinder body 10 has a compression chamber 11 extending through it along its axial direction. The piston 20 is rotatably disposed in the compression chamber 11, and the outer peripheral wall of the piston 20 abuts against the inner peripheral wall of the compression chamber 11. The cylinder body 10 is recessed radially outward from the inner peripheral wall of the compression chamber 11 to form a groove 12 for the slider 30 to slide radially. The slider 30 abuts against the end of the groove 12 away from the compression chamber 11 on its outer side in the radial direction through a spring. The inner side of the slider 30 is a cylindrical head 31 in the radial direction. The outer peripheral wall of the piston 20 is recessed inward to form an arc-shaped notch 21, which extends through both ends of the piston 20 in the axial direction. The outer peripheral wall of the cylindrical head 31 is recessed to form a plurality of oil storage grooves 40, and the plurality of oil storage grooves 40 on the outer peripheral wall of the cylindrical head 31 are evenly spaced along the axial direction.

[0047] In this embodiment, the oil storage tank 40 is a square tank, the length of the cylindrical head 31 in the axial direction is equal to the length of the slider 30 in the axial direction, the arc-shaped notch 21 on both sides in the circumferential direction is smoothly transitioned to the outer peripheral wall of the piston 20, and the radius of the arc-shaped notch 21 is greater than the radius of the cylindrical head 31.

[0048] Therefore, in the cylinder assembly according to this utility model embodiment, an arc-shaped notch 21 is formed radially inwardly recessed on the outer peripheral wall of the piston 20, and a cylindrical head 31 is formed on the inner side of the slider 30 in the radial direction. In this way, an oil storage groove 40 is recessed on the outer peripheral wall of the cylindrical head 31, which can effectively reduce the contact area between the piston 20 and the slider 30. At the same time, the oil storage groove 40 can also store a small amount of lubricating oil, so that the contact surface between the piston 20 and the slider 30 can be well lubricated, thereby effectively reducing the friction of the contact surface between the two, thereby reducing the wear of the components, improving the service life of the components and the performance of the compressor.

[0049] The following is combined Figures 1 to 3 , Figure 8 The following is a detailed description of a specific embodiment of the cylinder assembly according to the present invention. It is worth understanding that the following description is merely exemplary and should not be construed as limiting the present invention.

[0050] This embodiment provides a cylinder assembly, including a cylinder body 10, a piston 20, a slider 30, and a spring. The cylinder body 10 has a compression chamber 11 extending through it along its axial direction. The piston 20 is rotatably disposed in the compression chamber 11, and the outer peripheral wall of the piston 20 abuts against the inner peripheral wall of the compression chamber 11. The cylinder body 10 is recessed radially outward from the inner peripheral wall of the compression chamber 11 to form a slide groove 12 for the slider 30 to slide radially. The slider 30 abuts against the end of the slide groove 12 away from the compression chamber 11 on its outer side in the radial direction through a spring. The inner side of the slider 30 is a cylindrical head 31 in the radial direction. The outer peripheral wall of the piston 20 is recessed inward to form an arc-shaped notch 21, which extends through both ends of the piston 20 in the axial direction. The inner peripheral wall of the arc-shaped notch 21 is recessed to form a plurality of oil reservoirs 40, and the plurality of oil reservoirs 40 on the inner peripheral wall of the arc-shaped notch 21 are evenly spaced along the axial direction.

[0051] In this embodiment, the oil storage tank 40 is a square tank, the length of the cylindrical head 31 in the axial direction is equal to the length of the slider 30 in the axial direction, the arc-shaped notch 21 on both sides in the circumferential direction is smoothly transitioned to the outer peripheral wall of the piston 20, and the radius of the arc-shaped notch 21 is greater than the radius of the cylindrical head 31.

[0052] Therefore, in the cylinder assembly according to this utility model embodiment, an arc-shaped notch 21 is formed radially inwardly recessed on the outer peripheral wall of the piston 20, and a cylindrical head 31 is formed on the inner side of the slider 30 in the radial direction. In this way, an oil storage groove 40 is recessed on the inner peripheral wall of the arc-shaped notch 21, which can effectively reduce the contact area between the piston 20 and the slider 30. At the same time, the oil storage groove 40 can also store a small amount of lubricating oil, so that the contact surface between the piston 20 and the slider 30 can be well lubricated, thereby effectively reducing the friction of the contact surface between the two, thereby reducing the wear of the components, improving the service life of the components and the performance of the compressor.

[0053] like Figure 9 As shown, a second aspect of this utility model provides a pump body structure, which includes the cylinder assembly of any of the above embodiments. According to the pump body structure of this utility model embodiment, the lubrication effect between the slider 30 and the piston 20 can be effectively improved, reducing component wear and thus improving the performance and reliability of the compressor.

[0054] A third aspect of this utility model provides a compressor that includes the pump body structure described above. The compressor according to this utility model embodiment can effectively improve the lubrication effect between the slider 30 and the piston 20, reduce component wear, and thus improve the performance and reliability of the compressor.

[0055] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the cylinder assembly, pump body structure, and compressor of this utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A cylinder assembly, characterized in that: The device includes a cylinder body, a piston, a slider, and a spring. The cylinder body has a compression chamber extending through it along its axial direction. The piston is rotatably disposed in the compression chamber, and the outer peripheral wall of the piston abuts against the inner peripheral wall of the compression chamber. The cylinder body is recessed radially outward from the inner peripheral wall of the compression chamber to form a groove for the slider to slide radially. The slider abuts against the end of the groove away from the compression chamber on its outer side in the radial direction via the spring. The slider has a cylindrical head on its inner side in the radial direction. The outer peripheral wall of the piston has an arc-shaped notch recessed inward, which extends through both ends of the piston in the axial direction. An oil reservoir is recessed in the outer peripheral wall of the cylindrical head and / or the inner peripheral wall of the arc-shaped notch.

2. The cylinder assembly according to claim 1, characterized in that: The length of the cylindrical head in the axial direction is equal to the length of the slider in the axial direction. The arc-shaped notch smoothly transitions to the outer peripheral wall of the piston on both sides in the circumferential direction, and the radius of the arc-shaped notch is greater than the radius of the cylindrical head.

3. The cylinder assembly according to claim 1, characterized in that: The oil storage tank is one of the following: square tank, spiral tank, arc tank, or inclined tank.

4. The cylinder assembly according to claim 1, characterized in that: The outer peripheral wall of the cylindrical head is recessed with a plurality of oil storage grooves, which are evenly distributed on the outer peripheral wall of the cylindrical head.

5. The cylinder assembly according to claim 1, characterized in that: The inner peripheral wall of the arc-shaped notch is recessed with a plurality of oil storage grooves, which are evenly distributed on the inner peripheral wall of the arc-shaped notch.

6. The cylinder assembly according to claim 1, characterized in that: The outer peripheral wall of the cylindrical head and the inner peripheral wall of the arc-shaped notch are both recessed and provided with a plurality of oil storage grooves. The plurality of oil storage grooves on the outer peripheral wall of the cylindrical head are evenly distributed, and the plurality of oil storage grooves on the inner peripheral wall of the arc-shaped notch are evenly distributed.

7. The cylinder assembly according to claim 1, characterized in that: The slider has a groove recessed on one or both end faces in the axial direction, and the length direction of the groove is parallel to the length direction of the slider.

8. A pump body structure, characterized in that: Includes the cylinder assembly according to any one of claims 1 to 7.

9. A compressor, characterized in that: Includes the pump body structure according to claim 8.

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