Variable displacement structure of compressor and compressor

Abstract

The utility model provides a variable displacement structure of a compressor and the compressor, and belongs to the technical field of compressors, the variable displacement structure of the compressor comprises a crankshaft and a roller, the crankshaft is provided with an adjusting screw, the axis of the adjusting screw is perpendicular to the axis of the crankshaft, and the adjusting screw can move on the crankshaft. And the distance between the end part of the adjusting screw rod and the axis of the crankshaft is changed. The rollers are arranged on the periphery of the crankshaft and connected to the two ends of the adjusting screw in a sleeving mode. According to the variable displacement structure of the compressor, the eccentricity of the crankshaft can be adjusted by adjusting the movement of the screw, then the displacement of the compressor is adjusted, use is convenient, universality is high, and the machining difficulty and the machining cost of the compressor can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a compressor variable displacement structure and a compressor. Background Art

[0002] In modern air-conditioning systems, rotary compressors are one of the core components of the refrigeration cycle. Traditional rotary compressors use a crankshaft to rotate within a cylinder, with rollers mounted on the crankshaft's eccentric ring. The compressor compresses the refrigerant through a process of suction, rotation, and exhaust, and then discharges it. In practical applications, compressors require different displacements to meet varying cooling needs. In existing rotary compressors, the rollers are mounted on the crankshaft's eccentric ring. The current method for changing the compressor's displacement typically involves adjusting the crankshaft's eccentricity and the roller's outer diameter, while keeping the eccentric ring's outer diameter and roller's inner diameter unchanged. This method requires corresponding crankshafts and rollers for each displacement. For example, a compressor with 10 different displacements would require 10 different crankshaft and roller models. This results in a wide variety of materials, increasing inventory management and logistics costs. Furthermore, each crankshaft and roller requires specific processing techniques and equipment, increasing the complexity of the production process and the investment in production equipment. The need to design and manufacture dedicated crankshafts and rollers for each displacement significantly increases production costs, especially when high machining precision is required, and the scrap rate of defective products also increases accordingly.

[0003] Therefore, it is necessary to improve the existing rotary compressor to overcome the defects of the prior art. Utility Model Content

[0004] In order to overcome the problems existing in the related art, one of the purposes of the present invention is to provide a variable displacement structure of a compressor, which can adjust the eccentricity of the crankshaft by adjusting the movement of the screw, and then adjust the displacement of the compressor. It is easy to use and has high versatility, and can reduce the processing difficulty and processing cost of the compressor.

[0005] A compressor variable displacement structure, comprising:

[0006] a crankshaft, wherein an adjusting screw is provided on the crankshaft, wherein the axis of the adjusting screw is perpendicular to the axis of the crankshaft, and the adjusting screw is movable along its own axis on the crankshaft to change the distance between the center of the adjusting screw and the axis of the crankshaft;

[0007] Rollers are arranged on the periphery of the crankshaft and sleeved on both ends of the adjusting screw.

[0008] During operation, this structure allows the center position of the adjustment screw to be easily changed by moving it along the crankshaft, effectively changing the crankshaft's "virtual eccentricity" and enabling flexible adjustment of the compressor's displacement. This design allows the compressor to adapt to different operating requirements, improving the equipment's adaptability and flexibility.

[0009] Since major components such as crankshafts and adjusting screws are designed to be made of universal materials, they can be used with different rollers, reducing the number of materials required during production. This significantly reduces inventory costs and simplifies supply chain management.

[0010] In a preferred technical solution of the present invention, a cylindrical platform is provided on the crankshaft, the cylindrical platform is coaxially arranged with the crankshaft, and the outer diameter of the cylindrical platform is larger than the outer diameter of the crankshaft, and the adjusting screw is provided on the cylindrical platform.

[0011] The cylindrical platform and crankshaft utilize a concentric structure, replacing the traditional eccentric crankshaft design. This not only simplifies the production process but also reduces processing difficulty and costs. Furthermore, the enhanced versatility of key components further reduces the frequency of mold changes and production line adjustments, improving production efficiency. The concentric structure makes it easier to ensure precision and consistency during crankshaft machining, contributing to improved overall compressor quality and product qualification rates. Furthermore, the wear-resistant treatment of the adjusting screw also extends the equipment's service life.

[0012] In a preferred technical solution of the present invention, a screw hole is provided on the cylindrical platform, and the screw hole passes through the crankshaft in the radial direction of the crankshaft. The adjusting screw is provided in the screw hole, and the outer wall of the adjusting screw is threadedly connected to the screw hole.

[0013] The adjusting screw is placed in a threaded hole on the cylindrical platform, connected via its outer wall to the inner threaded hole. This connection is not only secure and reliable, but also allows for fine-tuning. By rotating the adjusting screw, the threaded mechanism can be used to move it forward or backward within the hole, thereby changing the distance between its center and the crankshaft axis. This change in distance directly affects the position of the roller connected to the adjusting screw, thereby adjusting the compressor's displacement.

[0014] In a better technical solution of the present invention, a locking hole is provided on the cylindrical platform, one end of the locking hole is connected to the screw hole, and the other end is exposed on the side wall of the cylindrical platform. A set screw is provided in the locking hole, and the set screw is threadedly connected to the locking hole. A locking head is provided at one end of the set screw.

[0015] One end of the set screw is designed with a locking head that directly presses against the adjusting screw, ensuring it does not loosen due to vibration or other external forces during operation. Once the adjusting screw is adjusted to the target position, the set screw is rotated to gradually compress the adjusting screw, thus achieving a locking function. The locking head ensures that the set screw firmly secures the adjusting screw, preventing it from moving during compressor operation.

[0016] In a preferred technical solution of the present invention, an adjustment hole is provided on the side wall of the adjustment screw, and the adjustment hole is provided close to the end of the adjustment screw.

[0017] The main function of the adjustment hole is to provide an interface for fine-tuning the adjustment screw. In practice, the operator can insert a rod or other slender tool into the adjustment hole and then rotate the tool to fine-tune the adjustment screw using the principle of leverage. This method avoids the inconvenience and errors that may arise from directly manipulating the adjustment screw, improving the accuracy and convenience of adjustment.

[0018] In a preferred technical solution of the present invention, abutment surfaces are provided at opposite ends of the adjusting screw, the abutment surfaces are arc-shaped, and a coating is provided on the abutment surfaces.

[0019] In a preferred technical solution of the present invention, the orthographic projection of the abutting surface along the axial direction of the adjusting screw is circular, and the diameter is greater than 10 cm.

[0020] The design of the abutment surface helps to reduce friction and wear with the rollers or other contact parts, thereby improving the durability and stability of the entire structure.

[0021] The coating on the abutment surface can increase the wear resistance and reduce the wear of the adjusting screw due to constant friction with the inner wall of the roller, thereby extending the service life of the structure.

[0022] In a preferred technical solution of the present invention, the inner wall of the roller is connected to two opposite ends of the adjusting screw, and the distance between the inner wall of the roller and the end of the adjusting screw is 0.01 mm-0.015 mm.

[0023] The existence of a gap of 0.01mm-0.015mm can reduce the difficulty of assembly between the roller and the adjusting screw and improve the assembly efficiency.

[0024] A second object of the present utility model is to provide a compressor comprising a cylinder block and the variable displacement structure of the compressor as described above, wherein the roller is arranged in the cylinder block.

[0025] The utility model provides a variable displacement structure for a compressor, which includes a crankshaft and a roller. An adjustment screw is provided on the crankshaft, the axis of the adjustment screw being perpendicular to the axis of the crankshaft, and the adjustment screw being movable on the crankshaft to change the distance between the end of the adjustment screw and the axis of the crankshaft. The roller is disposed on the periphery of the crankshaft and is sleeved on both ends of the adjustment screw. During actual use, since the adjustment screw is movable on the crankshaft, the center position of the adjustment screw changes after the adjustment screw moves, that is, the distance between the center of the adjustment screw and the axis of the crankshaft changes. Since the roller is sleeved on the adjustment screw, the position of the roller also changes. Changing the center position of the adjustment screw is equivalent to changing the eccentricity of the crankshaft, thereby changing the displacement of the compressor. In addition, since both the crankshaft and the adjustment screw are detachable, they can be used with different rollers, thereby improving the versatility of the structure and reducing the processing difficulty and cost of the compressor.

[0026] The present application also provides a compressor including the aforementioned variable displacement compressor structure. The compressor integrates the aforementioned variable displacement structure, including key components such as a crankshaft, an adjustment screw, rollers, and a cylinder. By adjusting the position of the screw on the crankshaft, the compressor's displacement can be flexibly varied to accommodate varying operating requirements and conditions. This provides the compressor with greater flexibility and adaptability while reducing production costs and inventory pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of an existing rotary compressor provided by the utility model;

[0028] Figure 2 It is a three-dimensional diagram of a variable displacement structure of a compressor provided by an embodiment of the present utility model;

[0029] Figure 3 is a top view of a variable displacement structure of a compressor provided by an embodiment of the present utility model;

[0030] Figure 4 It is a side view of a variable displacement structure of a compressor provided by an embodiment of the present utility model;

[0031] Figure 5 This is a schematic structural diagram of a crankshaft provided in an embodiment of the present utility model;

[0032] Figure 6 This is a schematic structural diagram of a set screw provided by an embodiment of the present utility model;

[0033] Figure 7 This is a schematic structural diagram of a compressor provided by an embodiment of the present utility model;

[0034] Figure 8 This is a structural diagram of a compressor provided by an embodiment of the present utility model after adjusting the eccentricity;

[0035] Figure 9 This is a flow chart of a method for controlling compressor displacement provided in an embodiment of the present utility model.

[0036] Reference numerals:

[0037] 1. Crankshaft; 11. Cylindrical table; 12. Locking hole; 13. Screw hole; 2. Roller; 3. Adjusting screw; 31. Adjusting hole; 32. Abutment surface; 4. Set screw; 41. Locking head; 100. Cylinder block. DETAILED DESCRIPTION

[0038] The following describes preferred embodiments of the present invention in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0039] In existing rotary compressors, the rollers are mounted on the eccentric circles of the crankshaft. The existing method of changing the displacement of the compressor is usually to change the eccentricity of the crankshaft and the outer diameter of the roller, while the outer diameter of the eccentric circle and the inner diameter of the roller remain unchanged. In this method, different displacements require corresponding crankshafts and rollers. For example, compressors with 10 displacements require 10 types of crankshafts and 10 types of rollers. This will lead to a wide variety of materials and increase inventory management and logistics costs. Moreover, each crankshaft and roller requires specific processing technology and equipment, which increases the complexity of the production process and the investment in production equipment. The need to design and manufacture dedicated crankshafts and rollers for each displacement leads to a significant increase in production costs. Especially when high processing precision is required, the scrap rate of defective products also increases accordingly.

[0040] Based on this, the present application provides a compressor variable displacement structure.

[0041] Example 1

[0042] like Figures 1-6 As shown, this embodiment provides a variable displacement structure for a compressor, which includes a crankshaft 1 and rollers 2. An adjusting screw 3 is provided on the crankshaft 1. The axis of the adjusting screw 3 is perpendicular to the axis of the crankshaft 1 and the adjusting screw 3 is movable on the crankshaft 1 to change the distance between the end of the adjusting screw 3 and the axis of the crankshaft 1. The rollers 2 are provided on the periphery of the crankshaft 1 and are sleeved on both ends of the adjusting screw 3.

[0043] During actual use, since adjusting screw 3 can move on crankshaft 1, the center position of adjusting screw 3 changes, that is, the distance between the center of adjusting screw 3 and the axis of crankshaft 1 changes. Since roller 2 is sleeved on adjusting screw 3, the position of roller 2 also changes. The change in the center position of adjusting screw 3 is equivalent to changing the "virtual eccentricity" of crankshaft 1, achieving flexible adjustment of the compressor displacement, allowing the compressor to adapt to different working requirements and improving the adaptability and flexibility of the equipment.

[0044] Because key components like the crankshaft 1 and adjustment screw 3 are designed from universal materials, they can be used with different rollers 2. This reduces the number of materials required during production. Only rollers 2 with corresponding outer diameters need to be produced based on displacement requirements, significantly reducing material variety and inventory, and simplifying supply chain management. Furthermore, this structure allows for flexible adjustment of the compressor's displacement to accommodate varying operating requirements and conditions. This design enhances the equipment's flexibility and adaptability, enabling the compressor to function in a wider range of applications.

[0045] The assembly process of this structure is as follows: The adjusting screw 3 is fixed to the crankshaft 1 and adjusted according to the preset eccentricity to change the position of the adjusting screw 3. Then, the adjusting screw 3 is locked. Next, the rollers 2 are placed on both ends of the adjusting screw 3 and assembled into the compressor cylinder.

[0046] During operation, as crankshaft 1 rotates within the compressor's cylinder, adjusting screw 3 drives roller 2 to rotate, achieving the compressor's intake, compression, and exhaust processes. By varying the eccentricity of adjusting screw 3, the rotational trajectory of roller 2 can be adjusted, thereby varying the compressor's displacement.

[0047] Example 2

[0048] This embodiment is improved on the basis of embodiment 1.

[0049] like Figures 1-6 As shown, in this embodiment, a cylindrical platform 11 is provided on the crankshaft 1. The cylindrical platform 11 is coaxially arranged with the crankshaft 1, and the outer diameter of the cylindrical platform 11 is larger than the outer diameter of the crankshaft 1. The adjusting screw 3 is provided on the cylindrical platform 11.

[0050] The cylindrical table 11 protrudes from the surface of the crankshaft 1, forming a step circle on the crankshaft 1, which provides an installation position for the adjustment screw 3. The concentric circle structure of the cylindrical table 11 and the crankshaft 1 replaces the traditional eccentric circle structure, greatly simplifying the production process. This not only reduces the difficulty of processing, but also significantly reduces the processing cost. In the traditional eccentric circle structure, precise eccentricity processing is a technical problem, and the processing cost is high. Now, through the coaxial design of the cylindrical table 11 and the crankshaft 1, this problem has been effectively solved. The concentric circle structure of the cylindrical table 11 and the crankshaft 1 of the present application makes it easier to ensure accuracy and consistency of the crankshaft 1 during the processing process, which helps to improve the overall quality of the compressor and the product qualification rate.

[0051] In addition, the enhanced versatility of major components further reduces the frequency of mold replacement and production line adjustments, thereby improving production efficiency.

[0052] Example 3

[0053] This embodiment is improved on the basis of embodiment 2.

[0054] like Figures 1-6 As shown, in this embodiment, a screw hole 13 is provided on the cylindrical platform 11, and the screw hole 13 passes through the crankshaft 1 along the radial direction of the crankshaft 1. The adjusting screw 3 is provided in the screw hole 13, and the outer wall of the adjusting screw 3 is threadedly connected to the screw hole 13.

[0055] The adjusting screw 3 is placed in the screw hole 13 on the cylindrical table 11 and is connected to the screw hole 13 through the thread on the inner wall of the screw hole 13 via its outer wall. This connection method is not only firm and reliable, but also can achieve fine-tuning function. By rotating the adjusting screw 3, the transmission principle of the thread can be used to make the adjusting screw 3 move forward or backward in the screw hole 13, thereby changing the distance between its center position and the axis of the crankshaft 1. The change in the position of the adjusting screw 3 will directly affect the position of the roller 2. Furthermore, the change in the position of the roller 2 will change the displacement of the compressor, so that the compressor can be flexibly adjusted according to different working requirements.

[0056] In practical applications, the diameter of the screw hole 13 may be 2 cm to 5 cm.

[0057] Example 4

[0058] This embodiment is improved on the basis of embodiment 3.

[0059] like Figures 1-6As shown, in this embodiment, a locking hole 12 is provided on the cylindrical platform 11, one end of the locking hole 12 is connected to the screw hole 13, and the other end is exposed on the side wall of the cylindrical platform 11, and a set screw 4 is provided in the locking hole 12, and the set screw 4 is threadedly connected to the locking hole 12, and a locking head 41 is provided at one end of the set screw 4.

[0060] One end of the set screw 4 is designed with a locking head 41. This locking head 41 can be used to directly press against the adjustment screw 3 to ensure that it does not loosen due to vibration or other external forces during operation. Specifically, the locking head 41 can be conical in shape and is used to engage the external thread of the adjustment screw 3 to lock the adjustment screw 3.

[0061] When the adjusting screw 3 is adjusted to the target position, the set screw 4 is rotated to gradually compress the adjusting screw 3, thereby achieving the locking function. The design of the locking head 41 ensures that the set screw 4 can firmly fix the adjusting screw 3 to prevent it from moving during the operation of the compressor.

[0062] In practical applications, the number of the locking holes 12 of the present application can be set to two, and the two locking holes 12 are symmetrical about the axis of the crankshaft 1. That is:

[0063] A pair of locking holes 12 are symmetrically disposed on the cylindrical platform 11, one on each side wall of the cylindrical platform 11 and connected to the screw hole 13. A corresponding set screw 4 is disposed within each locking hole 12, threadedly connected to the corresponding locking hole 12. Each set screw 4 has a locking head 41 at one end.

[0064] The locking heads 41 of the set screw 4 are designed to cooperate with each other to achieve bidirectional locking of the adjustment screw 3. Specifically, each locking head 41 can be designed to be conical or other suitable geometric shapes to facilitate snapping into the external thread of the adjustment screw 3, thereby locking the adjustment screw 3.

[0065] During assembly, the adjusting screw 3 is first adjusted to the target position. The set screw 4 is then rotated to gradually tighten the adjusting screw 3, thereby achieving a locking function. The design of the locking head 41 ensures that the set screw 4 can firmly fix the adjusting screw 3, preventing it from moving during compressor operation.

[0066] By symmetrically arranging two locking holes 12 and set screws 4 on the cylindrical platform 11, a bidirectional locking mechanism is provided, significantly improving the stability and reliability of the compressor during operation. The symmetrical arrangement of locking holes 12 and set screws 4 allows for even distribution of the locking force on both sides of the adjustment screw 3, reducing the risk of screw bending or deformation caused by unilateral locking. This symmetrical locking structure more effectively resists vibration generated during compressor operation, reducing the possibility of loosening of the adjustment screw 3 due to vibration.

[0067] Example 5

[0068] This embodiment is improved on the basis of embodiment 1.

[0069] like Figures 1-6 As shown, in this embodiment, an adjustment hole 31 is provided on the side wall of the adjustment screw 3 , and the adjustment hole 31 is provided near the end of the adjustment screw 3 .

[0070] The primary function of adjustment hole 31 is to provide an interface for fine-tuning adjustment screw 3. In practice, an operator can insert a rod or other slender tool into adjustment hole 31 and then rotate the tool to fine-tune adjustment screw 3 using the principle of leverage. The design of adjustment hole 31 allows the operator to easily rotate adjustment screw 3 without having to directly touch the screw itself. This avoids the inconvenience and errors that can arise from direct manipulation of the adjustment screw 3, improving adjustment accuracy and convenience.

[0071] In a more preferred embodiment of the present invention, an adjustment hole 31 is provided on each sidewall of the adjustment screw 3 at symmetrical positions at both ends, i.e., an adjustment hole 31 is provided at each end of the adjustment screw 3. These two adjustment holes 31 are provided near the two ends of the adjustment screw 3 and are symmetrically positioned to facilitate fine-tuning by the operator from either end.

[0072] Example 6

[0073] This embodiment is improved on the basis of embodiment 5.

[0074] like Figures 1-6 As shown, in this embodiment, the adjusting screw 3 is provided with abutment surfaces 32 at opposite ends thereof, the abutment surfaces 32 being arc-shaped and coated. It should be noted that the abutment surfaces 32 of the present application may be curved surfaces formed on the adjusting screw 3 by machining.

[0075] In this embodiment, the orthographic projection of the abutting surface 32 along the axial direction of the adjusting screw 3 is circular, and the diameter thereof is greater than 10 cm.

[0076] The design of the abutment surface 32 helps reduce friction and wear with the roller 2 or other contacting components, improving the durability and stability of the entire structure. The size of the abutment surface 32 not only provides a large contact area, helping to disperse contact stress, but also ensures the stability of the adjustment screw 3 when in contact with the roller 2 or other components.

[0077] The coating on the abutting surface 32 can increase the wear resistance and reduce the wear of the adjusting screw 3 due to the constant friction with the inner wall of the roller 2, thereby extending the service life of the structure.

[0078] In this embodiment, the inner wall of the roller 2 is connected to two opposite ends of the adjusting screw 3, and the distance between the inner wall of the roller 2 and the end of the adjusting screw 3 is 0.01 mm-0.015 mm.

[0079] The 0.01mm-0.015mm gap can reduce the difficulty of assembling the roller 2 and the adjustment screw 3, thereby improving assembly efficiency. This gap design allows the roller 2 to have a certain amount of floating space during the assembly process, thereby reducing errors in the assembly process and the strict requirements on precision.

[0080] The coating of the abutting surface 32 of the present application is a superhard coating, which is supported by a coating material with properties such as high hardness, high wear resistance, and high corrosion resistance. It can significantly improve the surface performance of the abutting surface 32 and extend the service life of the adjusting screw 3.

[0081] The coating can be any one of a diamond coating, a titanium carbonitride coating, a titanium nitride coating, a chromium nitride coating, an aluminum oxide coating, a nanocomposite coating, and a polycrystalline diamond coating.

[0082] Example 7

[0083] like Figure 7-Figure 8 As shown, this embodiment provides a compressor, including a cylinder block 100 and the variable displacement structure of the compressor as described above, wherein the roller 2 is arranged in the cylinder block 100 .

[0084] The compressor provided in this embodiment integrates the variable displacement structure of the compressor described above to achieve efficient and flexible operating performance. The compressor includes a cylinder and the following key components:

[0085] Crankshaft 1, the core rotating component of the compressor, is designed to adjust the compressor's displacement by adjusting the position of screw 3. Adjusting screw 3 is fixed to crankshaft 1 and tightened with set screw 4 to adjust the displacement. Roller 2, located within the cylinder, cooperates with adjusting screw 3 to achieve the compressor's intake, compression, and exhaust operations. The cylinder, the main component of the compressor, moves within it, completing the compression process.

[0086] The compressor provided in this embodiment can adjust displacement according to actual needs, avoiding over-compression, thereby improving energy efficiency and saving energy. Due to its simplified structure and universal components, maintenance and component replacement become easier and faster. The compressor can quickly adapt to different workloads, improving its applicability in various application scenarios.

[0087] In addition, during the manufacturing process, if different displacements are required, the outer diameter of the roller 2 needs to match the corresponding target displacement. Different displacements require the production of different models of rollers 2, that is, the outer diameter of the roller 2 needs to change.

[0088] The assembly process of the compressor is as follows:

[0089] Place crankshaft 1 in the desired location, usually on the bottom or bracket of the compressor. Make sure crankshaft 1 is correctly aligned and its axis is consistent with the design axis of the compressor.

[0090] Fix the adjusting screw 3 on the cylindrical stage 11 of the crankshaft 1. Make sure that the center of the adjusting screw 3 is aligned with the center of the cylindrical stage 11 of the crankshaft 1. This step is critical because it directly affects the ability to adjust the compressor displacement.

[0091] Adjust the position of adjusting screw 3 to set the desired displacement. Use a measuring tool to ensure the position of adjusting screw 3 is accurate. Then, use set screw 4 to secure adjusting screw 3 in place. Set screw 4 needs to be tightened evenly to prevent adjusting screw 3 from loosening during operation.

[0092] Install roller 2 into the cylinder. Roller 2 should be able to rotate freely and maintain good contact with the inner wall of the cylinder. Make sure roller 2 is properly installed on the adjusting screw 3 to ensure its correct position during operation.

[0093] Place the cylinder into the compressor frame and ensure it is properly aligned with the crankshaft 1 and other components. The cylinder must be installed tightly to prevent leakage of compressed gas.

[0094] After completing the assembly of all parts, perform a visual inspection to ensure that all parts are installed correctly and no steps have been missed. Perform an initial running test to check that the compressor runs smoothly without unusual noise or vibration.

[0095] Example 8

[0096] like Figures 1-9 As shown, this embodiment provides a method for adjusting the displacement of a compressor, which is implemented based on the compressor as described above. The adjustment method includes:

[0097] S100. Obtaining the target displacement of the compressor. In this step, the target displacement is determined based on the compressor's application requirements and operating conditions. This can be determined by the operator based on experience or by the control system according to a pre-set program. The target displacement may be determined based on various factors, such as cooling requirements, energy efficiency, and environmental conditions.

[0098] S200, controlling the movement of the adjustment screw 3 according to the target displacement to adjust the eccentricity E of the crankshaft 1;

[0099] Based on the determined target displacement, calculate the required eccentricity E of crankshaft 1. Eccentricity E refers to the fore-aft position of the adjusting screw 3 on crankshaft 1 and directly affects the compressor's displacement. In this step, an appropriate mechanical device can be used to control the axial movement of the adjusting screw 3 along the crankshaft 1 to adjust eccentricity E to the calculated target value. Alternatively, the position of the adjusting screw 3 can be manually adjusted. During the adjustment process, precision measuring tools or sensors may be used to monitor the real-time value of eccentricity E to ensure accurate adjustment.

[0100] S300. When the eccentricity E is adjusted to the target value, the roller 2 is sleeved on the adjusting screw 3 to complete the adjustment of the compressor displacement.

[0101] When eccentricity E is adjusted to the target value, roller 2 is mounted on adjusting screw 3. Roller 2 should be installed to ensure proper fit with the cylinder inner wall for effective compression. Check the installation position and tightening status of roller 2 to ensure it does not shift or fall out during compressor operation. After roller 2 is installed, perform a final inspection and test to verify that the compressor's displacement meets the target. This may include an operational test and performance evaluation.

[0102] This method can accurately control the displacement of the compressor to adapt to different working conditions and requirements, and is highly flexible and adaptable.

[0103] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below 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, and the spatially relative descriptions used herein are interpreted accordingly.

[0104] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0105] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A variable displacement structure of a compressor, characterized in that: include: A crankshaft (1), wherein an adjusting screw (3) is provided on the crankshaft (1), the axis of the adjusting screw (3) is perpendicular to the axis of the crankshaft (1), and the adjusting screw (3) is movable along its own axis on the crankshaft (1) to change the distance between the center of the adjusting screw (3) and the axis of the crankshaft (1); A roller (2) is provided on the periphery of the crankshaft (1), and the roller (2) is sleeved on both ends of the adjusting screw (3).

2. The variable displacement structure of the compressor according to claim 1, characterized in that: A cylindrical platform (11) is provided on the crankshaft (1), the cylindrical platform (11) is coaxially arranged with the crankshaft (1), and the outer diameter of the cylindrical platform (11) is larger than the outer diameter of the crankshaft (1), and the adjusting screw (3) is provided on the cylindrical platform (11).

3. The variable displacement structure of the compressor according to claim 2, characterized in that: A screw hole (13) is provided on the cylindrical platform (11), and the screw hole (13) passes through the crankshaft (1) in the radial direction of the crankshaft (1). The adjusting screw (3) is provided in the screw hole (13), and the outer wall of the adjusting screw (3) is threadedly connected to the screw hole (13).

4. The variable displacement structure of the compressor according to claim 3, characterized in that: A locking hole (12) is provided on the cylindrical platform (11), one end of the locking hole (12) is connected to the screw hole (13), and the other end is exposed on the side wall of the cylindrical platform (11), a set screw (4) is provided in the locking hole (12), the set screw (4) is threadedly connected to the locking hole (12), and a locking head (41) is provided at one end of the set screw (4).

5. The variable displacement structure of the compressor according to any one of claims 1 to 4, characterized in that: An adjustment hole (31) is provided on the side wall of the adjustment screw (3), and the adjustment hole (31) is arranged close to the end of the adjustment screw (3).

6. The variable displacement structure of the compressor according to any one of claims 1 to 4, characterized in that: The adjusting screw rod (3) is provided with abutment surfaces (32) at opposite ends thereof, the abutment surfaces (32) are in an arc shape, and a coating is provided on the abutment surfaces (32).

7. The variable displacement structure of the compressor according to claim 6, characterized in that: The orthographic projection of the abutting surface (32) along the axial direction of the adjusting screw (3) is circular, and its diameter is greater than 10 cm.

8. The variable displacement structure of the compressor according to claim 6, characterized in that: The inner wall of the roller (2) is connected to the two opposite ends of the adjusting screw (3), and the distance between the inner wall of the roller (2) and the end of the adjusting screw (3) is 0.01mm-0.015mm.

9. A compressor, characterized in that: The invention comprises a cylinder block (100) and a variable displacement structure of a compressor according to any one of claims 1 to 8, wherein the roller (2) is arranged in the cylinder block (100).

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