A cylinder assembly, a pump body structure and a compressor

Abstract

This utility model relates to a cylinder assembly, a pump body structure, and a compressor. The cylinder assembly includes a cylinder body, a cylinder ring, a piston, and a slider. The cylinder body has a compression chamber extending through it along its axial direction. A groove for the slider to slide is formed by a radial outward recess in the inner circumferential wall of the cylinder body from the compression chamber. An air intake channel communicating with the compression chamber is extending through the outer circumferential wall of the cylinder body. The outer circumferential wall of the cylinder ring is fitted and connected to the inner circumferential wall of the compression chamber. An air intake hole communicating with the air intake channel is formed on the cylinder ring. A notch communicating with the groove and allowing the slider to pass through is formed on the cylinder ring. A compression chamber is extending through it along its axial direction inside the cylinder ring. The piston is rotatably disposed in the compression chamber, and the outer circumferential wall of the piston abuts against the inner circumferential wall of the compression chamber. This utility model's cylinder assembly, by adding a cylinder ring to the cylinder body, can change the compressor's displacement without changing components such as the crankshaft, effectively reducing component manufacturing and management costs.

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 works by using a slider to divide the cylinder into intake and exhaust chambers. When the motor is energized, the stator coil generates an electromagnetic field, and the rotor cuts magnetic lines of force to drive the crankshaft of the pump body to rotate, causing the piston to rotate within the cylinder and compress the refrigerant. Under the action of the crankshaft, the volume of the intake and exhaust chambers is continuously changed, drawing in low-temperature, low-pressure gaseous refrigerant and compressing it into high-temperature, high-pressure gaseous refrigerant before expelling it from the pump body, thus completing the cycle.

[0003] The crescent-shaped volume formed by the piston, slider, and cylinder represents the compressor's displacement, which directly affects the cooling capacity of the refrigeration system. Conventional compressors set the dimensions of components such as the cylinder, crankshaft, and piston based on a preset displacement. Therefore, developing compressors with the same cylinder structure but different displacements requires matching crankshafts and pistons of different sizes. This results in compressors of the same cylinder series needing to be equipped with various crankshaft and piston parts of different sizes. However, since crankshafts and similar components generally look similar and are difficult to distinguish, and their relatively large size leads to high manufacturing and management costs, as well as the risk of using the wrong parts during compressor assembly. 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. By adding a cylinder sleeve ring in the cylinder body, the displacement of the compressor can be changed without changing the crankshaft and other components, effectively reducing the manufacturing cost and management cost of the components.

[0005] To achieve the above objectives, a first aspect of this utility model provides a cylinder assembly, including a cylinder body, a cylinder ring, a piston, and a slider; the cylinder body has a compression chamber extending through it along its axial direction, and the cylinder body is radially recessed outward from the inner peripheral wall of the compression chamber to form a groove for the slider to slide in; the outer peripheral wall of the cylinder body has an air intake channel communicating with the compression chamber; the outer peripheral wall of the cylinder ring is fitted and connected to the inner peripheral wall of the compression chamber, the cylinder ring has an air intake hole communicating with the air intake channel, the cylinder ring has a notch communicating with the groove and allowing the slider to pass through, and a compression chamber extending through it along its axial direction inside the cylinder ring; 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.

[0006] Therefore, according to the cylinder assembly of this utility model embodiment, by adding a cylinder ring to the cylinder body, the displacement of the compressor can be changed without changing components such as the crankshaft. Specifically, by attaching a cylinder ring to the inner circumferential wall of the compression chamber of the cylinder body, and by setting a compression chamber inside the cylinder ring, the compression chamber in the cylinder ring can replace the compression chamber of the cylinder body as the compression area of ​​the cylinder assembly. Since the inner diameter of the compression chamber of the cylinder ring is smaller than the inner diameter of the compression chamber of the cylinder body, the displacement of the compressor can be reduced without changing the dimensions of other components, thereby effectively reducing the manufacturing cost and management cost of the components.

[0007] In one embodiment, one end face of the cylinder liner ring is provided with an exhaust port that communicates with the compression chamber.

[0008] In one embodiment, the exhaust port and the air inlet port are respectively located on both sides of the notch.

[0009] In one embodiment, the notch extends axially through both ends of the cylinder liner ring, and the width of the notch in the circumferential direction is greater than or equal to the width of the groove in the circumferential direction.

[0010] In one embodiment, the air intake hole is coaxially arranged with the air intake channel, and the radius of the air intake hole is greater than or equal to the radius of the air intake channel.

[0011] In one implementation, the cylinder ring and the cylinder body form an interference fit.

[0012] In one embodiment, the axial length of the cylinder sleeve ring is equal to the axial length of the cylinder body.

[0013] A second aspect of this utility model provides a pump body structure, which includes the cylinder assembly described in any of the preceding embodiments. According to the pump body structure of this utility model embodiment, by adding a cylinder ring to the cylinder body, the compressor displacement can be changed without altering components such as the crankshaft, effectively reducing the manufacturing and management costs of the components.

[0014] A third aspect of this utility model provides a compressor comprising the pump body structure described in any of the preceding embodiments. According to this utility model, by adding a cylinder ring to the cylinder body, the compressor's displacement can be changed without altering components such as the crankshaft, effectively reducing component manufacturing and management costs.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the cylinder assembly according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the assembly of the cylinder body and cylinder ring according to an embodiment of the present utility model.

[0018] Figure 3 This is an exploded view of the cylinder body and cylinder ring of an embodiment of the present utility model;

[0019] Figure 4 This is one of the structural schematic diagrams of the cylinder liner ring according to an embodiment of the present utility model;

[0020] Figure 5 This is a second schematic diagram of the cylinder ring structure according to an embodiment of the present utility model;

[0021] Figure 6 This is one of the structural schematic diagrams of the pump body structure according to an embodiment of the present utility model;

[0022] Figure 7 This is the second schematic diagram of the pump body structure according to an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10. Cylinder body; 11. Compression chamber; 12. Intake passage; 13. Slide groove; 20. Cylinder ring; 21. Compression chamber; 22. Notch; 23. Intake port; 24. Exhaust port; 30. Piston; 40. Slider; 50. Crankshaft. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] In related technologies, the working principle of a rotary compressor is to use a slider to divide the cylinder into two spaces: an intake chamber and an exhaust chamber. When the motor is energized, the stator coil generates an electromagnetic field, and the rotor cuts magnetic lines of force to generate power, driving the crankshaft of the pump body to rotate, which in turn causes the piston to rotate within the cylinder, compressing the refrigerant. Under the action of the crankshaft, the volume of the intake and exhaust chambers is continuously changed, drawing in low-temperature, low-pressure gaseous refrigerant and compressing it into high-temperature, high-pressure gaseous refrigerant before expelling it from the pump body, thus completing the cycle. The crescent-shaped volume formed by the piston, slider, and cylinder is the compressor's displacement, and the compressor's displacement directly affects the cooling capacity of the refrigeration system. Conventional compressors set the dimensions of components such as cylinders, crankshafts, and pistons according to a preset displacement. As a result, developing compressors with the same cylinder structure but different displacements requires matching crankshafts and pistons of different sizes. This leads to compressors of the same cylinder series needing to be equipped with various crankshaft and piston parts of different sizes. However, since components such as crankshafts look roughly the same and are difficult to distinguish, and the crankshaft is also relatively large, the manufacturing and management costs of components such as crankshafts are high, and there is also a risk of using the wrong parts during compressor assembly.

[0029] Therefore, this utility model provides a cylinder assembly, a pump body structure, and a compressor. According to this utility model, by adding a cylinder ring to the cylinder body, the compressor displacement can be changed without altering components such as the crankshaft, effectively reducing the manufacturing and management costs of the components.

[0030] Please see Figures 1 to 7The first aspect of this utility model provides a cylinder assembly, including a cylinder body 10, a cylinder ring 20, a piston 30, and a slider 40; the cylinder body 10 has a compression chamber 11 extending through it along its axial direction, and the inner peripheral wall of the cylinder body 10 is recessed radially outward to form a sliding groove 13 for the slider 40 to slide, and the outer peripheral wall of the cylinder body 10 has an intake channel 12 communicating with the compression chamber 11; the outer peripheral wall of the cylinder ring 20 and the inner peripheral wall of the compression chamber 11 are recessed. The cylinder ring 20 is connected to the cylinder wall, and has an intake hole 23 that connects to the intake passage 12. The cylinder ring 20 also has a notch 22 that connects to the slide groove 13 and allows the slider 40 to pass through. A compression chamber 21 is formed through the cylinder ring 20 along its axial direction. The piston 30 is rotatably disposed in the compression chamber 21, and the outer peripheral wall of the piston 30 abuts against the inner peripheral wall of the compression chamber 21. The axial length of the cylinder ring 20 is equal to the axial length of the cylinder body 10.

[0031] Furthermore, in this embodiment of the invention, one end face of the cylinder liner ring 20 is provided with an exhaust port 24 communicating with the compression chamber 21; the exhaust port 24 and the intake port 23 are respectively arranged on both sides of the notch 22. In addition, in this embodiment of the invention, the notch 22 extends axially through both ends of the cylinder liner ring 20, and the circumferential width of the notch 22 is greater than or equal to the circumferential width of the groove 13; the intake port 23 is coaxially arranged with the intake channel 12, and the radius of the intake port 23 is greater than or equal to the radius of the intake channel 12.

[0032] The axial length of the compression chamber 11 of the cylinder body 10 is denoted as H, the inner diameter of the compression chamber 11 of the cylinder body 10 is denoted as D1, the inner diameter of the compression chamber 21 of the cylinder ring 20 is denoted as D2, and the outer diameter of the piston 30 is denoted as D3.

[0033] When the inner circumferential wall of the compression chamber 11 of the cylinder body 10 is not provided with a cylinder ring 20, the displacement of the cylinder assembly is denoted as V1, and V1 satisfies the relationship: V1 = (D1 2 -D3 2 When the inner circumferential wall of the compression chamber 11 of the cylinder body 10 is provided with a cylinder ring 20, the displacement of the cylinder assembly is denoted as V2, and V2 satisfies the relationship: V2=(D2) 2 -D3 2)*H*π / 4 / 1000. In other words, because the inner diameter D2 of the compression chamber 21 of the cylinder ring 20 is smaller than the inner diameter D1 of the compression cavity 11 of the cylinder body 10, V2 < V1. That is, by setting the cylinder ring 20 on the inner circumferential wall of the compression cavity 11 of the cylinder body 10, the displacement of the cylinder assembly can be reduced. The displacement of the cylinder assembly is the same as the displacement of the compressor. Without changing the dimensions of the original components, the thickness of the cylinder ring 20 can be designed according to the change in the compressor's displacement (towards a smaller value), so that the inner diameter of the compression chamber 21 of the cylinder ring 20 meets the compressor's displacement requirements.

[0034] Therefore, according to the cylinder assembly of this utility model embodiment, by adding a cylinder ring 20 to the cylinder body 10, the displacement of the compressor can be changed without changing components such as the crankshaft 50. Specifically, the cylinder ring 20 is attached to the inner peripheral wall of the compression chamber 11 of the cylinder body 10, and a compression chamber 21 is provided inside the cylinder ring 20. In this way, the compression chamber 21 in the cylinder ring 20 can replace the compression chamber 11 of the cylinder body 10 as the compression area of ​​the cylinder assembly. Since the inner diameter of the compression chamber 21 of the cylinder ring 20 is smaller than the inner diameter of the compression chamber 11 of the cylinder body 10, the displacement of the compressor can be reduced without changing the dimensions of other components, thereby effectively reducing the manufacturing cost and management cost of the components.

[0035] Optionally, in some embodiments of this utility model, the cylinder ring 20 and the cylinder body 10 form an interference fit. It is worth understanding that in other embodiments, the cylinder ring 20 can also be fixed in the cylinder body 10 by screws or other means, which will not be elaborated here.

[0036] The following is combined Figures 1 to 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.

[0037] This embodiment provides a cylinder assembly, including a cylinder body 10, a cylinder ring 20, a piston 30, and a slider 40. The cylinder body 10 has a compression chamber 11 extending through it along its axial direction. The inner peripheral wall of the cylinder body 10 is radially recessed outwards to form a groove 13 for sliding the slider 40. An intake channel 12 communicating with the compression chamber 11 is provided through the outer peripheral wall of the cylinder body 10. The outer peripheral wall of the cylinder ring 20 is fitted and connected to the inner peripheral wall of the compression chamber 11. A connecting... The intake port 23 of the intake passage 12 is provided. The cylinder ring 20 has a notch 22 that connects to the slide groove 13 and allows the slider 40 to pass through. The cylinder ring 20 has a compression chamber 21 that extends through it along its axial direction. The piston 30 is rotatably disposed in the compression chamber 21, and the outer peripheral wall of the piston 30 abuts against the inner peripheral wall of the compression chamber 21. The cylinder ring 20 and the cylinder body 10 form an interference fit. The axial length of the cylinder ring 20 is equal to the axial length of the cylinder body 10.

[0038] Furthermore, in this embodiment, one end face of the cylinder liner ring 20 is provided with an exhaust port 24 communicating with the compression chamber 21; the exhaust port 24 and the intake port 23 are respectively arranged on both sides of the notch 22. In addition, in this embodiment, the notch 22 extends axially through both ends of the cylinder liner ring 20, and the circumferential width of the notch 22 is equal to the circumferential width of the groove 13; the intake port 23 is coaxially arranged with the intake passage 12, and the radius of the intake port 23 is equal to the radius of the intake passage 12.

[0039] A second aspect of this utility model provides a pump body structure, which includes the cylinder assembly described above. According to the pump body structure of this utility model embodiment, by adding a cylinder ring 20 to the cylinder body 10, the compressor displacement can be changed without altering components such as the crankshaft 50, effectively reducing the manufacturing and management costs of the components.

[0040] A third aspect of this utility model provides a compressor that includes the pump body structure described above. According to this utility model, by adding a cylinder ring 20 to the cylinder body 10, the compressor's displacement can be changed without altering components such as the crankshaft 50, effectively reducing component manufacturing and management costs.

[0041] 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 cylinder body includes a cylinder body, a cylinder ring, a piston, and a slider. The cylinder body has a compression chamber extending through it along its axial direction. A groove is formed radially outward from the inner circumferential wall of the cylinder body, allowing the slider to slide. An air intake channel communicating with the compression chamber is extending through the outer circumferential wall of the cylinder body. The outer circumferential wall of the cylinder ring is fitted to the inner circumferential wall of the compression chamber. An air intake hole communicating with the air intake channel is formed on the cylinder ring. A notch communicating with the groove and allowing the slider to pass through is formed on the cylinder ring. A compression chamber is extending through it along its axial direction inside the cylinder ring. The piston is rotatably disposed in the compression chamber, and the outer circumferential wall of the piston abuts against the inner circumferential wall of the compression chamber.

2. The cylinder assembly according to claim 1, characterized in that: One end face of the cylinder ring has an exhaust port that communicates with the compression chamber.

3. The cylinder assembly according to claim 2, characterized in that: The exhaust port and the air inlet port are respectively located on both sides of the notch.

4. The cylinder assembly according to claim 1, characterized in that: The notch extends axially through both ends of the cylinder liner ring, and the width of the notch in the circumferential direction is greater than or equal to the width of the groove in the circumferential direction.

5. The cylinder assembly according to claim 1, characterized in that: The air intake hole is coaxial with the air intake channel, and the radius of the air intake hole is greater than or equal to the radius of the air intake channel.

6. The cylinder assembly according to claim 1, characterized in that: The cylinder ring and the cylinder body form an interference fit.

7. The cylinder assembly according to claim 1, characterized in that: The axial length of the cylinder sleeve is equal to the axial length of the cylinder body.

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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