Variable displacement structure of compressor, compressor and method for adjusting displacement of compressor

Abstract

The invention provides a compressor variable displacement structure, a compressor and a compressor displacement adjusting method, and belongs to the technical field of compressors, the compressor variable displacement structure comprises a crankshaft and a roller, an adjusting screw rod is arranged on the crankshaft, the axis of the adjusting screw rod is perpendicular to the axis of the crankshaft, and the adjusting screw rod 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 present invention relates to the technical field of compressors, and in particular to a compressor variable displacement structure, a compressor and a method for adjusting the compressor displacement. Background Art

[0002] In modern air-conditioning systems, rotary compressors are one of the core components for realizing refrigeration cycles. Traditional rotary compressors rotate the crankshaft in the cylinder, and the rollers are sleeved on the eccentric circle of the crankshaft. The refrigerant is compressed and discharged through the process of suction, rotation, and exhaust. In practical applications, in order to meet different refrigeration needs, the compressor needs to have different displacements. In existing rotary compressors, the rollers are sleeved on the eccentric circle of the crankshaft. The existing method of changing the displacement of the compressor usually changes 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 way, different displacements need to be matched with corresponding crankshafts and rollers. For example, for compressors with 10 displacements, 10 types of crankshafts + 10 types of rollers are required. 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 machining accuracy 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. Summary of the invention

[0004] In order to overcome the problems existing in the related art, one of the objects 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, thereby adjusting the displacement of the compressor. The structure is easy to use and has high versatility, and can reduce the processing difficulty and cost of the compressor.

[0005] A compressor variable displacement structure, comprising:

[0006] A crankshaft, wherein an adjusting screw is disposed on the crankshaft, wherein the axis of the adjusting screw is perpendicular to the axis of the crankshaft, and the adjusting screw can move 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 use, the center position of the adjusting screw can be easily changed by adjusting the movement of the screw on the crankshaft, which is equivalent to changing the "virtual eccentricity" of the crankshaft, thus realizing flexible adjustment of the compressor displacement. This design enables the compressor to adapt to different working requirements and improves the adaptability and flexibility of the equipment.

[0009] Since the main components such as crankshafts and adjusting screws are designed as universal materials, they can be used with different rollers, thus reducing the types of materials required in the production process. This greatly reduces inventory costs and simplifies supply chain management.

[0010] In a preferred technical solution of the present invention, a cylindrical platform is arranged on the crankshaft, the cylindrical platform is arranged coaxially 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 arranged on the cylindrical platform.

[0011] The cylindrical table and the crankshaft adopt a concentric circle structure, replacing the eccentric circle structure of the traditional crankshaft, which not only simplifies the production process, but also reduces the processing difficulty and processing cost. In addition, due to the enhanced versatility of the main components, the frequency of mold replacement and production line adjustment is further reduced, and production efficiency is improved. The concentric circle structure makes it easier to ensure the accuracy and consistency of the crankshaft during processing, which helps to improve the overall quality of the compressor and the product qualification rate. At the same time, the wear-resistant treatment of the adjustment screw also extends the service life of the equipment.

[0012] In a preferred technical solution of the present invention, a screw hole is provided on the cylindrical platform, the screw hole penetrates 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 the screw hole on the cylindrical table and connected to the screw hole through its outer wall and the thread on the inner wall of the screw hole. This connection method is not only firm and reliable, but also can achieve fine-tuning function. By rotating the adjusting screw, the transmission principle of the thread can be used to make the adjusting screw move forward or backward in the screw hole, thereby changing the distance between its center position and the crankshaft axis. The change in this distance directly affects the position of the roller connected to the adjusting screw, thereby changing the displacement of the compressor.

[0014] In a preferred 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 opposite end is exposed on the side wall of the cylindrical platform, a set screw is provided in the locking hole, the set screw is threadedly connected to the locking hole, and 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, which can be used to directly press against the adjustment screw to ensure that it will not loosen due to vibration or other external forces during operation. When the adjustment screw is adjusted to the target position, the set screw is rotated to gradually press the adjustment screw, thereby achieving the locking function. The design of the locking head ensures that the set screw can firmly fix the adjustment screw to prevent it from moving during the operation of the compressor.

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

[0017] The main function of the adjustment hole is to provide an operating interface for fine-tuning the adjustment screw. In actual applications, the operator can use an iron rod or other slender tools to insert into the adjustment hole, and then rotate the tool to fine-tune the adjustment screw through the lever principle. This method avoids the inconvenience and error that may be caused by direct operation of the adjustment screw, and improves 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 in an arc shape, and a coating is provided on the abutment surfaces.

[0019] In a preferred technical solution of the present invention, the orthographic projection of the abutment surface along the axial direction of the adjustment 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, and improves 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 invention is to provide a compressor, comprising a cylinder block and the compressor variable displacement structure as described above, wherein the roller is arranged in the cylinder block.

[0025] A third object of the present invention is to provide a method for adjusting the displacement of a compressor, which is implemented based on the compressor as described above, and the adjustment method comprises:

[0026] Obtaining a target displacement of the compressor;

[0027] The screw is adjusted to move according to the target displacement control so as to adjust the eccentricity E of the crankshaft;

[0028] When the eccentricity E is adjusted to the target value, the roller is sleeved on the adjusting screw to complete the adjustment of the compressor displacement.

[0029] The present invention provides a variable displacement structure of a compressor, which includes a crankshaft and a roller. An adjusting screw is arranged on the crankshaft, the axis of the adjusting screw is perpendicular to the axis of the crankshaft, and the adjusting screw can move on the crankshaft to change the distance between the end of the adjusting screw and the axis of the crankshaft. The roller is arranged on the periphery of the crankshaft, and the roller is sleeved on both ends of the adjusting screw. In actual use, since the adjusting screw can move on the crankshaft, when the adjusting screw moves, the center position of the adjusting screw changes, that is, the distance between the center of the adjusting screw and the axis of the crankshaft changes. Since the roller is sleeved on the adjusting screw, the position of the roller also changes. The change in the center position of the adjusting screw is equivalent to changing the eccentricity of the crankshaft, so the displacement of the compressor can be changed. In addition, since the crankshaft and the adjusting screw are both detachable, they can be used with different rollers, thereby improving the versatility of the structure and reducing the processing difficulty and processing cost of the compressor.

[0030] The present application also provides a compressor including the above compressor variable displacement structure and a method for controlling the compressor displacement. The compressor as a whole integrates the above variable displacement structure, including key components such as a crankshaft, an adjustment screw, a roller and a cylinder. By adjusting the position of the screw on the crankshaft, the displacement of the compressor can be flexibly changed to adapt to different working requirements and working conditions, which makes the compressor more flexible and adaptable, while reducing production costs and inventory pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an existing rotary compressor provided by the present invention;

[0032] Figure 2 is a three-dimensional diagram of a variable displacement structure of a compressor provided by an embodiment of the present invention;

[0033] Figure 3 is a top view of a compressor variable displacement structure provided by an embodiment of the present invention;

[0034] Figure 4 is a side view of a variable displacement structure of a compressor provided by an embodiment of the present invention;

[0035] Figure 5is a schematic structural diagram of a crankshaft provided by an embodiment of the present invention;

[0036] Figure 6 is a schematic structural diagram of a set screw provided by an embodiment of the present invention;

[0037] Figure 7 is a schematic structural diagram of a compressor provided by an embodiment of the present invention;

[0038] Figure 8 is a schematic structural diagram of a compressor after adjusting the eccentricity provided by an embodiment of the present invention;

[0039] Fig. 9 It is a flow chart of a method for controlling compressor displacement provided by an embodiment of the present invention.

[0040] Reference numerals:

[0041] 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

[0042] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the 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. On the contrary, 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.

[0043] In existing rotary compressors, the rollers are mounted on the eccentric circles of the crankshafts. 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 rollers, while the outer diameter of the eccentric circle and the inner diameter of the rollers remain unchanged. In this method, different displacements require corresponding crankshafts and rollers. For example, compressors with 10 displacements require 10 types of crankshafts + 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 special crankshafts and rollers for each displacement leads to a significant increase in production costs, especially when high processing precision is required, and the scrap rate of defective products also increases accordingly.

[0044] Based on this, the present application provides a compressor variable displacement structure.

[0045] Example 1

[0046] like Figure 1-Figure 6As shown, the present embodiment provides a variable displacement structure of a compressor, which includes a crankshaft 1 and a roller 2. An adjusting screw 3 is arranged 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 can move on the crankshaft 1 to change the distance between the end of the adjusting screw 3 and the axis of the crankshaft 1. The roller 2 is arranged on the periphery of the crankshaft 1, and the roller 2 is sleeved on both ends of the adjusting screw 3.

[0047] In actual use, since the adjusting screw 3 can move on the crankshaft 1, when the adjusting screw 3 moves, the center position of the adjusting screw 3 changes, that is, the distance between the center of the adjusting screw 3 and the axis of the crankshaft 1 changes. Since the roller 2 is sleeved on the adjusting screw 3, the position of the roller 2 also changes. The change in the center position of the adjusting screw 3 is equivalent to changing the "virtual eccentricity" of the crankshaft 1, realizing the flexible adjustment of the compressor displacement, enabling the compressor to adapt to different working requirements, and improving the adaptability and flexibility of the equipment.

[0048] Since the crankshaft 1, adjustment screw 3 and other major components are designed as universal materials, they can be used with different rollers 2, thereby reducing the types of materials required in the production process. It is only necessary to produce rollers 2 with corresponding outer diameters according to displacement requirements, which greatly reduces the types of materials and inventory, and simplifies supply chain management. In addition, this structure can flexibly change the displacement of the compressor to adapt to different working requirements and working conditions. This design improves the flexibility and adaptability of the equipment, allowing the compressor to play a role in a wider range of applications.

[0049] The assembly process of the structure is as follows: fix the adjusting screw 3 on the crankshaft 1, and adjust it according to the preset eccentricity to change the position of the adjusting screw 3. Then, lock the adjusting screw 3. Next, sleeve the rollers 2 on both ends of the adjusting screw 3 and assemble them into the cylinder of the compressor.

[0050] During operation, when the crankshaft 1 rotates in the cylinder of the compressor, the adjusting screw 3 drives the roller 2 to rotate, realizing the suction, compression and exhaust processes of the compressor. By changing the eccentricity of the adjusting screw 3, the rotation trajectory of the roller 2 can be adjusted, thereby changing the displacement of the compressor.

[0051] Example 2

[0052] This embodiment is improved on the basis of embodiment 1.

[0053] like Figure 1-Figure 6 As shown, in this embodiment, a cylindrical platform 11 is arranged 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 arranged on the cylindrical platform 11.

[0054] The cylindrical table 11 protrudes from the surface of the crankshaft 1, forming a step circle on the crankshaft 1, and the step circle 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.

[0055] In addition, due to the enhanced versatility of major components, the frequency of mold replacement and production line adjustment is further reduced, improving production efficiency.

[0056] Example 3

[0057] This embodiment is improved on the basis of Embodiment 2.

[0058] like Figure 1-Figure 6 As shown, in this embodiment, a screw hole 13 is provided on the cylindrical platform 11 , and the screw hole 13 penetrates the crankshaft 1 along the radial direction of the crankshaft 1 . The adjusting screw 3 is arranged in the screw hole 13 , and the outer wall of the adjusting screw 3 is threadedly connected to the screw hole 13 .

[0059] The adjusting screw 3 is placed in the screw hole 13 on the cylindrical table 11, and is connected through the thread of the outer wall thereof and the inner wall of the screw hole 13. This connection method is not only firm and reliable, but also can realize the fine-tuning function. By rotating the adjusting screw 3, the transmission principle of the thread can be utilized 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.

[0060] In practical applications, the diameter of the screw hole 13 may be 2 cm-5 cm.

[0061] Example 4

[0062] This embodiment is improved on the basis of embodiment 3.

[0063] like Figure 1-Figure 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.

[0064] One end of the set screw 4 is designed with a locking head 41, which can be used to directly press against the adjusting screw 3 to ensure that it will not loosen due to vibration or other external forces during operation. Specifically, the locking head 41 can be conical and is used to be inserted into the external thread of the adjusting screw 3 to lock the adjusting screw 3.

[0065] When the adjusting screw 3 is adjusted to the target position, the locking function is achieved by rotating the set screw 4 to gradually press the adjusting screw 3. 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.

[0066] 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:

[0067] A pair of locking holes 12 are symmetrically arranged on the cylindrical platform 11, and the locking holes 12 are respectively located on the two side walls of the cylindrical platform 11 and are connected to the screw holes 13. In the locking holes 12 at each end, corresponding set screws 4 are respectively arranged, and the set screws 4 are threadedly connected with the corresponding locking holes 12, and a locking head 41 is arranged at one end of each set screw 4.

[0068] The locking heads 41 of the set screw 4 are designed to cooperate with each other to achieve bidirectional locking of the adjusting screw 3. Specifically, each locking head 41 can be designed to be conical or other suitable geometric shapes to facilitate being inserted into the external thread of the adjusting screw 3, thereby locking the adjusting screw 3.

[0069] During assembly, the adjusting screw 3 is first adjusted to the target position, and then the set screw 4 is rotated to gradually press 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.

[0070] By symmetrically arranging two locking holes 12 and set screws 4 on the cylindrical platform 11, a bidirectional locking mechanism is provided, which significantly improves the stability and reliability of the compressor during operation. The symmetrically arranged locking holes 12 and set screws 4 can be evenly distributed on both sides of the adjustment screw 3, so that the locking force is evenly distributed, reducing the bending or deformation of the screw that may be caused by unilateral locking. The symmetrical locking structure can more effectively resist the vibration generated by the compressor during operation and reduce the possibility of loosening of the adjustment screw 3 due to vibration.

[0071] Example 5

[0072] This embodiment is improved on the basis of embodiment 1.

[0073] like Figure 1-Figure 6 As shown, in this embodiment, the side wall of the adjusting screw 3 is provided with an adjusting hole 31 , and the adjusting hole 31 is provided close to the end of the adjusting screw 3 .

[0074] The main function of the adjustment hole 31 is to provide an operating interface for fine-tuning the adjustment screw 3. In actual applications, the operator can insert an iron rod or other slender tool into the adjustment hole 31, and then rotate the tool to fine-tune the adjustment screw 3 through the lever principle. The design of the adjustment hole 31 allows the operator to easily rotate the adjustment screw 3 without directly contacting the screw itself, which avoids the inconvenience and error that may be caused by directly operating the adjustment screw 3 and improves the accuracy and convenience of adjustment.

[0075] In a more preferred solution of this embodiment, an adjustment hole 31 is provided on each of the side walls at symmetrical positions at both ends of the adjustment screw 3, that is, an adjustment hole 31 is provided at each end of the adjustment screw 3. The two adjustment holes 31 are provided near the two ends of the adjustment screw 3 and are symmetrically located, so that the operator can perform fine adjustment from either end.

[0076] Example 6

[0077] This embodiment is improved on the basis of Embodiment 5.

[0078] like Figure 1-Figure 6 As shown, in this embodiment, the two opposite ends of the adjusting screw 3 are provided with abutment surfaces 32, the abutment surfaces 32 are arc-shaped, and a coating is provided on the abutment surfaces 32. It should be noted that the abutment surfaces 32 of the present application can be curved surfaces formed on the adjusting screw 3 by machining.

[0079] 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.

[0080] The design of the abutment surface 32 helps to reduce friction and wear with the roller 2 or other contact parts, and improves the durability and stability of the entire structure. The size design of the abutment surface 32 not only provides a large contact area, which helps to disperse the contact stress, but also ensures the stability of the adjustment screw 3 when it contacts the roller 2 or other parts.

[0081] The coating on the abutment surface 32 can increase the wear resistance and reduce the wear of the adjusting screw 3 in the continuous friction with the inner wall of the roller 2, thereby extending the service life of the structure.

[0082] 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.

[0083] The existence of a gap of 0.01 mm to 0.015 mm can reduce the difficulty of assembling the roller 2 and the adjusting screw 3 and improve the assembly efficiency. Such a gap design allows the roller 2 to have a certain floating space during the assembly process, thereby reducing the error in the assembly process and the strict requirements on precision.

[0084] The coating of the abutment surface 32 of the present application is a superhard coating, which is supported by a coating material having properties such as high hardness, high wear resistance, and high corrosion resistance. It can significantly improve the surface performance of the abutment surface 32 and extend the service life of the adjustment screw 3.

[0085] The coating may 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.

[0086] Example 7

[0087] like Figure 7-Figure 8 As shown, this embodiment provides a compressor, including a cylinder block 100 and the compressor variable displacement structure as described above, and the roller 2 is arranged in the cylinder block 100.

[0088] The compressor provided in this embodiment integrates the variable displacement structure of the compressor as described above to achieve efficient and flexible operating performance. The compressor includes a cylinder and the following key components:

[0089] The crankshaft 1 is the core rotating part of the compressor. The design of the crankshaft 1 allows the displacement of the compressor to be changed by adjusting the position of the screw 3. The adjusting screw 3 is fixed to the crankshaft 1 and locked by the set screw 4 to adjust the displacement. The roller 2 is set in the cylinder and cooperates with the adjusting screw 3 to realize the suction, compression and exhaust actions of the compressor. The cylinder is the main part of the compressor, and the roller 2 moves in it to complete the compression process.

[0090] The compressor provided in this embodiment can adjust the displacement according to actual needs to avoid over-compression, thereby improving energy efficiency and saving energy. Due to the simplification of the structure and the commonality of components, maintenance and replacement of components become easier and faster. The compressor can quickly adapt to different workloads, improving its applicability in various application scenarios.

[0091] 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.

[0092] The assembly process of the compressor is as follows:

[0093] Place crankshaft 1 in the desired position, usually on the bottom or bracket of the compressor. Make sure crankshaft 1 is properly aligned and its axis is consistent with the design axis of the compressor.

[0094] 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 adjustment ability of the compressor displacement.

[0095] Adjust the position of the adjusting screw 3 to set the desired displacement. Use a measuring tool to ensure that the position of the adjusting screw 3 is accurate. Then, use the set screw 4 to fix the adjusting screw 3 in the proper position. The set screw 4 needs to be tightened evenly to prevent the adjusting screw 3 from loosening during operation.

[0096] 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.

[0097] Place the cylinder into the frame of the compressor and make sure it is properly aligned with the crankshaft 1 and other components. The installation of the cylinder needs to ensure a tight seal to prevent the compressed gas from leaking.

[0098] After all parts have been assembled, 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.

[0099] Example 8

[0100] like Figure 1-Figure 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, and the adjustment method includes:

[0101] S100, obtaining the target displacement of the compressor; in this step, the required target displacement is determined according to the application requirements and working conditions of the compressor. This can be determined by the operator based on experience or by the control system according to a preset program. The determination of the target displacement may be based on a variety of factors, such as cooling requirements, energy efficiency, environmental conditions, etc.

[0102] S200, controlling the movement of the adjustment screw 3 according to the target displacement to adjust the eccentricity E of the crankshaft 1;

[0103] According to the determined target displacement, the required eccentricity E of the crankshaft 1 is calculated. The eccentricity E is the front-back position of the adjusting screw 3 on the crankshaft 1, which directly affects the displacement of the compressor. 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 the eccentricity E to the calculated target value. Or the position of the adjusting screw 3 can be changed manually. During the adjustment process, it may be necessary to use precision measuring tools or sensors to monitor the real-time value of the eccentricity E to ensure accurate adjustment.

[0104] 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.

[0105] When the eccentricity E is adjusted to the target value, roller 2 is mounted on the adjusting screw 3. The installation of roller 2 should ensure that it is properly matched with the inner wall of the cylinder to achieve effective compression action. Check the installation position and tightening status of roller 2 to ensure that it will not be displaced or fall off during the operation of the compressor. After completing the installation of roller 2, perform a final inspection and test to verify whether the displacement of the compressor meets the target displacement. This may include operation tests and performance evaluations.

[0106] This method can accurately control the displacement of the compressor to adapt to different working conditions and requirements, and has high flexibility and strong adaptability.

[0107] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0108] 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.

[0109] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compressor variable displacement structure, It is characterized in that include: A crankshaft (1), wherein an adjusting screw (3) is arranged 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) can move 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), wherein the roller (2) is arranged on the periphery of the crankshaft (1), and the roller (2) is sleeved on both ends of the adjusting screw (3).

2. The compressor variable displacement structure according to claim 1, Features: A cylindrical platform (11) is arranged on the crankshaft (1), the cylindrical platform (11) is arranged coaxially 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 arranged on the cylindrical platform (11).

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

4. The compressor variable displacement structure according to claim 3, Features: 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 opposite to the locking hole (13) 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 compressor variable displacement structure according to any one of claims 1 to 4, Features: The side wall of the adjusting screw rod (3) is provided with an adjusting hole (31), and the adjusting hole (31) is arranged close to the end of the adjusting screw rod (3).

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

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

8. The compressor variable displacement structure according to claim 6, Features: 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 0.01 mm-0.015 mm.

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

10. A method for adjusting the displacement of a compressor, Features: Based on the compressor according to claim 9, the adjustment method comprises: Obtaining a target displacement of the compressor; Controlling the movement of the adjusting screw (3) according to the target displacement to adjust the eccentricity E of the crankshaft (1); 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.

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