Compressor and diaphragm thereof

Abstract

The present application relates to the technical field of compressor, and particularly provides a compressor and a partition plate thereof, aiming at solving the problem of stress concentration of the partition plate. For this purpose, the partition plate is provided with a central hole for the crankshaft to pass through, and a flexible groove is formed along the radial direction of the partition plate, the opening of the flexible groove is located on the side wall of the central hole, and the flexible groove is arranged around the central hole. The local elastic deformation capability provided by the flexible groove or flexible chamber changes the contact between the partition plate and the roller from the traditional "hard" rigid contact to "elastic buffer contact", effectively reduces the peak stress of the contact surface, avoids the micro spalling, scratches and abrasive wear caused by stress concentration, thereby significantly reduces the wear rate of the partition plate and the roller, and prolongs the service life of the components.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and specifically provides a compressor and its partition. Background Technology

[0002] Rotary compressors (also known as rolling rotor compressors) are widely used in household air conditioners, commercial air conditioners, refrigerators, freezers, and heat pump systems due to their compact structure, small size, high efficiency, and good reliability. The basic working principle of a rotary compressor is as follows: a compression mechanism, which draws in and compresses refrigerant gas, and an electric mechanism that drives the compression mechanism, are housed within a sealed container. The compression mechanism typically includes a cylinder, a cylindrical rotating piston (roller) housed within the cylinder, a drive shaft (crankshaft), upper bearings (main bearings) and lower bearings (secondary bearings) located at both ends of the cylinder, and a partition between adjacent cylinders. In the pump assembly of a rotary compressor, the partition serves to separate the cylinders.

[0003] For multi-cylinder rotary compressors, the crankshaft typically has multiple eccentric sections, with an intermediate section between two adjacent eccentric sections. A diaphragm is positioned between adjacent cylinders and engages with the intermediate section. The diaphragm is in direct contact with the rollers, which rotate along the cylinder wall within the cylinder chamber. The structural design of the diaphragm directly affects the roller's motion, component performance, service life, and reliability.

[0004] In existing technologies, compressor pump body baffles are typically designed as rigid structures, fixed to the cylinder block by means of screws or other methods. While this rigid baffle structure provides sufficient support strength and positioning accuracy, it presents numerous problems under actual operating conditions.

[0005] First, due to manufacturing and installation errors, it is difficult to achieve ideal uniform contact between the partition and the rollers. During the compressor's machining and assembly process, dimensional tolerances, form and position tolerances, and cumulative assembly errors of the components can all lead to varying degrees of clearance or interference between the partition and the roller end faces. When the rollers rotate at high speed under the drive of eccentric force, this uneven contact state causes a sharp increase in local contact stress, forming stress concentration areas.

[0006] Secondly, the compressor is subjected to complex load changes during operation. As the intake, compression, and exhaust cycles alternate, the pressure inside the cylinder fluctuates periodically, and the gas force acting on the rollers also fluctuates accordingly. This dynamic load change causes the contact force between the rollers and the diaphragm to change continuously. The rigid diaphragm cannot adaptively adjust to this dynamic change, thus exacerbating the deterioration of the contact condition.

[0007] Third, thermal deformation is an important factor that cannot be ignored. During operation, the compressor generates a large amount of heat, and the temperature distribution of various components is uneven, with different coefficients of thermal expansion. The baffles and rollers may experience varying degrees of thermal deformation at operating temperatures, further disrupting their fit and causing the contact condition to deviate from the design specifications.

[0008] The combined effect of the above factors can lead to non-uniform contact or interference between the rigid partition and the rollers. Specifically, this manifests as: localized stress concentration causing peak stress on the contact surface to far exceed the material's allowable stress; accelerated abnormal wear, resulting in microscopic spalling, scratches, and abrasive wear on the contact surface; a significant increase in frictional resistance, leading to a decrease in the compressor's mechanical efficiency; the conversion of frictional power consumption into heat, causing an increase in system temperature rise; and prominent vibration and noise problems, affecting the equipment's operational stability and user experience. The negative impacts of this rigid contact are particularly pronounced under high-speed, heavy-load, or variable operating conditions.

[0009] To address the aforementioned problems, some improvements have been implemented in the prior art. For example, some solutions improve the wear resistance of the partition by replacing the material of the partition or applying a coating to the surface of the partition, or by adjusting the matrix structure and hardness of the partition. However, these methods have only a small impact on the performance of the partition and cannot effectively improve the stress concentration problem.

[0010] Therefore, there is an urgent need for a compressor and its partition to solve the above-mentioned technical problems. Summary of the Invention

[0011] The present invention aims to solve the technical problem mentioned in the background art, namely, the inability to effectively improve the stress concentration of the partition.

[0012] In a first aspect, the present invention provides a compressor baffle, the baffle having a central hole through which a crankshaft passes, and a flexible groove being formed radially thereon on the baffle, the opening of the flexible groove being located on the sidewall of the central hole, and the flexible groove being arranged around the central hole.

[0013] In the specific embodiment of the compressor baffle described above, the upper and lower sides of the cross-sectional shape of the flexible groove are arranged in parallel.

[0014] In the specific embodiment of the compressor partition described above, the cross-sectional shape of the flexible groove is U-shaped, V-shaped, C-shaped or trapezoidal.

[0015] In the specific embodiment of the compressor partition described above, the cross-sectional shape of the flexible groove is stepped near at least one of the two end faces of the partition, and the width of the flexible groove gradually decreases from the opening to the root.

[0016] In a specific embodiment of the compressor partition described above, an elastic element is provided in the flexible groove, and the elastic element can elastically deform in the axial direction of the partition.

[0017] In a specific embodiment of the compressor partition described above, a plurality of elastic elements are provided in the flexible groove, and the plurality of elastic elements are spaced apart around the central hole.

[0018] In the specific embodiment of the above-mentioned compressor partition, the elastic element is a compression spring or a rubber spring.

[0019] In a second aspect, the present invention provides a compressor baffle, the baffle having a central hole through which a crankshaft passes, and a plurality of flexible chambers arranged at intervals around the central hole.

[0020] In a specific embodiment of the compressor partition described above, the partition includes a first body portion and a second body portion stacked together. The first body portion is provided with a first groove, and the second body portion is provided with a second groove. The first groove and the second groove enclose the flexible chamber.

[0021] In a third aspect, the present invention provides a compressor that includes the partition as described above.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. Significantly reduced wear. The localized elastic deformation capability provided by the flexible groove or flexible chamber transforms the contact between the partition and the roller from a traditional "hard-on-hard" rigid contact to an "elastic buffer contact." This transformation effectively reduces the peak stress on the contact surface, avoiding micro-scratching, scratches, and abrasive wear caused by stress concentration, thereby significantly reducing the wear rate of both the partition and the roller and extending the service life of the component.

[0023] 2. Improved stress distribution. The baffle can adaptively conform to the roller end face through its own micro-elastic deformation, effectively compensating for alignment and shape errors caused by manufacturing errors, installation errors, and thermal deformation. This results in a more uniform distribution of contact force over a larger contact area, improving the rationality of load bearing and avoiding premature failure caused by local overload.

[0024] 3. Reduced friction and temperature rise. More uniform contact and buffering reduce sliding friction and jamming, lower frictional power consumption, help control the temperature rise of the system, are more friendly to the lubrication system, and help maintain the integrity of the lubricating oil film.

[0025] 4. Vibration and noise suppression. The elastic structure can absorb and attenuate the impact energy caused by roller collisions, speed fluctuations, pressure pulsations, etc., reduce vibration transmission, thereby effectively reducing operating noise and improving the stability of equipment operation.

[0026] 5. Extended service life. In summary, this invention significantly extends the service life of the partition itself, and also indirectly extends the service life and reliability of the rollers and even the entire compressor by improving the working environment of the rollers.

[0027] 6. Flexible and controllable design. By adjusting the parameters of the flexible grooves or flexible chambers (shape, size, quantity, distribution, stiffness of elastic elements, etc.), the required flexibility size and direction of specific areas of the partition can be precisely "customized" to achieve optimized performance design and adapt to the needs of different working conditions. Attached Figure Description

[0028] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the compressor pump body assembly provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the partition provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the partition provided in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the partition provided in Embodiment 3 of the present invention; Figure 5 This is a schematic diagram of the partition provided in Embodiment 5 of the present invention; Figure 6 This is a schematic diagram of the partition provided in Embodiment 6 of the present invention; Figure 7 These are schematic diagrams of the partition provided in embodiments 7 and 8 of the present invention; Figure 8 This is a schematic diagram of the partition provided in Embodiment 8 of the present invention.

[0029] List of reference numerals in the attached drawings: 1. partition plate; 101. central hole; 102. flexible groove; 103. cantilever beam structure; 104. flexible chamber; 2. crankshaft; 3. cylinder; 4. roller; 5. elastic element. Detailed Implementation

[0030] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0031] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," and "right," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] To address the problems in the background art, the present invention provides a compressor, specifically a rotary compressor. The compressor of the present invention will be described in detail below with reference to several embodiments.

[0034] Example 1 like Figure 1 As shown, the pump body assembly of the compressor in this embodiment of the invention includes a partition 1, a crankshaft 2, cylinders 3, and rollers 4. Multiple cylinders 3 are present. The crankshaft 2 passes through the central hole 101 of the partition 1, which is positioned between two adjacent cylinders 3 to separate the rollers 4 within the adjacent cylinders. The partition 1 is in direct contact with the end faces of the rollers 4 and bears the axial force from the rollers 4 during compressor operation.

[0035] like Figure 2 As shown, in this embodiment, the partition 1 is provided with a central hole 101 through which the crankshaft 2 passes. A flexible groove 102 is formed radially on the partition 1, the opening of the flexible groove 102 is located on the side wall of the central hole 101, and the flexible groove 102 is arranged around the central hole 101. In other words, the flexible groove 102 is an annular groove structure formed by recessing outward (i.e. radially outward) from the side wall of the central hole 101, and its opening faces the central hole 101.

[0036] In this embodiment, the flexible groove 102 has a U-shaped cross-section. The bottom of the U-shaped flexible groove 102 is arc-shaped, and the two sidewalls of the groove are approximately parallel. The flexible groove 102 divides a local area of ​​the partition 1 into an approximate cantilever beam structure 103. When the roller 4 contacts the partition 1 and applies a force F, the cantilever beam structure 103 can undergo elastic bending deformation around its root (i.e., the bottom area of ​​the groove), thereby absorbing part of the impact energy, adjusting the actual position of the contact point and the magnitude of the contact force, and avoiding rigid collisions.

[0037] In this embodiment, the U-shaped flexible groove 102 has an opening width of w, a groove depth of h, and a bottom arc radius of r. These geometric parameters can be optimized according to actual working conditions. Generally, the larger the opening width w and the deeper the groove h, the lower the local stiffness and the stronger the elastic deformation capacity in the area where the flexible groove 102 is located. The size of the bottom arc radius r affects the degree of stress concentration; a larger r value is beneficial to reducing stress concentration at the bottom of the groove and improving fatigue life. However, a large opening width may not guarantee the structural strength of the pump body assembly, so it is necessary to reasonably control the opening width and groove depth.

[0038] In this embodiment, the flexible groove 102 is arranged around the central hole 101, so that the area where the partition 1 mates with the central hole 101 has uniform flexibility in the circumferential direction. When the crankshaft 2 undergoes bending deformation during operation, the flexible groove 102 can adaptably deform, avoiding excessive constraint force between the partition 1 and the crankshaft 2, thereby reducing wear in this area.

[0039] Example 2 This embodiment provides a compressor whose structure is basically the same as that of Embodiment 1, except that the specific structure of the partition 1 is different.

[0040] Please see Figure 3 In this embodiment, a flexible groove 102 is provided radially on the partition 1. The opening of the flexible groove 102 is located on the side wall of the central hole 101, and the flexible groove 102 is arranged around the central hole 101. Unlike embodiment 1, the upper and lower sides of the cross-sectional shape of the flexible groove 102 in this embodiment are arranged parallel, that is, the cross-section of the flexible groove 102 is rectangular or approximately rectangular.

[0041] This cross-sectional shape design facilitates a uniform stiffness reduction effect in the thickness direction (i.e., the axial direction) of the partition 1. When the partition 1 is subjected to an axial force from the roller 4, the two parallel sidewalls of the flexible groove 102 can withstand deformation evenly, making the elastic deformation of the partition 1 in the region of the flexible groove 102 more controllable and predictable.

[0042] In this embodiment, the distance between the upper and lower sidewalls of the flexible groove 102 (i.e., the groove width) can be adjusted according to actual needs. A wider groove width means greater flexibility, while a narrower groove width means less flexibility. By precisely controlling the groove width, precise control of the local stiffness of the partition can be achieved.

[0043] Example 3 This embodiment provides a compressor whose structure is basically the same as that of Embodiment 1, except that the specific structure of the partition 1 is different.

[0044] Please see Figure 4The cross-sectional shape of the flexible groove 102 is stepped on two of the two side edges of the two end faces of the partition plate 1, and the width of the opening of the flexible groove 102 gradually decreases from the root.

[0045] The first sidewall of the flexible groove 102 (i.e., the sidewall closest to one end face of the partition 1) has a stepped structure, comprising multiple stepped surfaces. From the opening of the flexible groove 102 to its root (i.e., the bottom of the groove), the width of the flexible groove 102 gradually decreases in a stepped manner. This stepped design creates multiple regions with different stiffnesses in the thickness direction of the partition 1.

[0046] Specifically, in the region near the central hole 101 of the partition 1, the flexible groove 102 has a larger width, lower local stiffness, and greater flexibility; in the region away from the central hole 101 of the partition 1, the flexible groove 102 has a smaller width, higher local stiffness, and less flexibility. This design creates a stepped stiffness distribution in the radial direction of the partition 1, ensuring that the surface area in contact with the roller 4 has sufficient flexibility for adaptive adjustment, while also ensuring that the root of the partition 1 has sufficient stiffness to provide structural support.

[0047] In this embodiment, the number of steps can be adjusted according to actual needs, and can be two steps, three steps, or more steps. The width and height of each step can also be designed according to actual needs to achieve a specific stiffness distribution curve.

[0048] In other embodiments, one side of the selected flexible groove 102 is a plane, and the other side is a trapezoidal shape.

[0049] Example 4 This embodiment provides a compressor whose structure is basically the same as that of Embodiment 1, except that the specific structure of the partition 1 is different.

[0050] In this embodiment, the partition 1 has a central hole 101 through which the crankshaft 2 passes. A flexible groove 102 is formed radially on the partition 1, with the opening of the flexible groove 102 located on the side wall of the central hole 101, and the flexible groove 102 surrounds the central hole 101. Unlike the previous embodiment, the flexible groove 102 in this embodiment has a C-shaped cross-section.

[0051] The cross-sectional shape of the C-shaped flexible groove 102 is characterized by a larger width at the opening, which gradually decreases towards the bottom, forming an overall "C" shape with a more pronounced tapering feature. This type of flexible groove 102 forms a structure similar to a "flexible hinge" in a local area of ​​the partition 1, allowing this area to undergo significant elastic deformation under axial loads while providing good constraint on radial loads.

[0052] In this embodiment, the flexible groove 102 is an open elliptical groove, except that the width of the opening is smaller than the maximum width of the flexible groove 102. The major axis of the ellipse is approximately perpendicular to the axis of the roller 4. This design allows for flexible deformation in a larger area of ​​the partition 1 in the radial direction, avoiding rigid collisions.

[0053] Example 5 This embodiment provides a compressor whose structure is basically the same as that of Embodiment 1, except that the specific structure of the partition 1 is different.

[0054] Please see Figure 5 In this embodiment, the partition 1 has a central hole 101 through which the crankshaft 2 passes. A flexible groove 102 is radially formed on the partition 1, with its opening located on the sidewall of the central hole 101. The flexible groove 102 surrounds the central hole 101. The cross-sectional shape of the flexible groove 102 is trapezoidal or V-shaped, specifically an isosceles trapezoid or an isosceles triangle. The root of the flexible groove 102 is rounded to avoid stress concentration.

[0055] The trapezoidal or V-shaped cross-section flexible groove 102 has the following characteristics: the opening of the groove is wider, the bottom of the groove is narrower, and the side walls are inclined. This shape gives the flexible groove 102 a gradually varying stiffness characteristic in the radial direction of the partition 1—the area near the central hole 101 (i.e., the opening) is more flexible, and the area away from the central hole 101 (i.e., the bottom of the groove) is less flexible. This gradual characteristic helps to achieve a smooth transition from the flexible area to the rigid area, avoiding stress concentration caused by abrupt changes in stiffness.

[0056] Example 6 This embodiment provides a compressor whose structure is basically the same as that of embodiments 1-5, except that the partition is the same as that in embodiments 1-5; the difference is that an elastic element is added to the flexible groove 102 of the partition 1.

[0057] Please see Figure 6 The elastic element 5 is capable of elastic deformation in the axial direction of the partition 1. The elastic element 5 is disposed inside the flexible groove 102, with one end abutting against one side wall of the flexible groove 102 and the other end abutting against the other side wall of the flexible groove 102. When the partition 1 is subjected to an axial force, a relative movement tendency arises between the two side walls of the flexible groove 102. The elastic element 5 resists this relative movement through its own elastic deformation, thereby adjusting the deformation characteristics of the flexible groove 102.

[0058] By setting the elastic device 5, the elastic deformation of the cantilever beam structure 103 can be adjusted to achieve different flexibility effects.

[0059] Multiple elastic elements 5 are arranged inside the annular flexible groove 102, and the multiple elastic elements 5 are evenly spaced around the central hole 101. The number of elastic elements 5 may be four, six, or eight, etc., and the specific number is selected according to the parameter requirements and the parameter matching of the elastic elements 5. In this embodiment, the multiple elastic elements 5 have the same stiffness.

[0060] Regarding the selection of the stiffness of the elastic element 5, it should be noted that in other embodiments, the stiffness of multiple elastic elements 5 can be different. By selecting different stiffnesses, the partition 1 can have different flexibility characteristics at different positions in the circumferential direction. For example, in areas where the expected contact stress with the roller 4 is high, an elastic element 5 with lower stiffness (i.e., higher flexibility) can be provided; in areas where the expected contact stress with the roller 4 is low, an elastic element 5 with higher stiffness (i.e., lower flexibility) can be provided. This differentiated design can achieve precise optimization of the contact state between the partition 1 and the roller 4.

[0061] In this design, the elastic element 5 is a compression spring. A compression spring has a defined stiffness value; by selecting compression springs with different stiffness coefficients, precise control of the deformation characteristics of the flexible groove 102 can be achieved. Besides compression springs, in other embodiments, the elastic element 5 can also be a rubber spring, a disc spring, or other types of elastic elements.

[0062] In this embodiment, the elastic element 5 not only adjusts the deformation characteristics of the flexible groove 102, but also provides additional energy absorption and damping functions. When the roller 4 impacts the partition 1, the elastic element 5 absorbs the impact energy through its own elastic deformation, reducing the transmission of the impact force to the main structure of the partition 1, which helps to reduce vibration and noise.

[0063] Example 7 This embodiment provides a compressor whose structure is basically the same as that of Embodiment 1, except that the specific structure of the partition 1 is different.

[0064] Please see Figure 7 In this embodiment, the partition 1 has a central hole 101 through which the crankshaft 2 passes. The partition 1 also has an annular flexible chamber 104, which is spaced around the central hole. Specifically, the flexible chamber 104 is a closed groove. The partition includes a first body portion and a second body portion stacked on top of each other. The first body portion has an annular first groove, and the second body portion has an annular second groove. The first and second grooves together form the flexible chamber.

[0065] The flexible chamber 104 has an elliptical cross-sectional shape, with the major axis of the ellipse aligned radially with the partition 1. This design allows for flexible deformation over a larger area of ​​the partition 1 in the radial direction, preventing rigid collisions.

[0066] The flexibility of the partition 1 depends on the geometric parameters of the flexible groove 102, including the length of the major axis, the length of the minor axis, the width of the groove, and the depth of the groove. Larger major and minor axis dimensions mean a larger elastic island area, and its flexibility is correspondingly increased; thinner groove walls (i.e., smaller wall thickness) mean greater flexibility.

[0067] The presence of the flexible chamber 104 results in lower local stiffness of the partition 1 in the region corresponding to the flexible chamber 104. When the partition 1 is subjected to an axial force from the roller 4, the top and bottom walls of the flexible chamber 104 can undergo elastic deformation, thereby achieving adaptive adjustment to the contact state.

[0068] The dimensions of the ellipse (including the major and minor axes) can be designed according to actual needs. A larger flexible chamber 104 means a larger flexible area and lower local stiffness; a smaller flexible chamber 104 means a smaller flexible area and higher local stiffness. In addition, the interior of the flexible chamber 104 can be filled with different media (such as air, nitrogen, liquid, or elastomer) to achieve different stiffness characteristics.

[0069] The advantages of this embodiment are: the flexible chamber 104 is more flexible in processing; grooves can be formed on the first and second body parts respectively by casting, forging, machining or stamping, and then the first and second body parts can be combined together by welding, bonding, bolting or interference fit. This split structure also facilitates the maintenance and replacement of the flexible chamber.

[0070] In addition, the design of the flexible chamber 104 allows for the formation of a hollow structure in the thickness direction of the partition 1, which reduces the weight of the partition 1 to some extent and helps to reduce the overall weight and rotational inertia of the compressor.

[0071] Example 8 This embodiment provides a compressor whose structure is basically the same as that of Embodiment 1, except that the specific structure of the partition 1 is different.

[0072] Please see Figure 7 and 8 In this embodiment, the partition 1 is provided with a central hole 101 through which the crankshaft 2 passes. This embodiment achieves localized flexibility adjustment by providing multiple flexible chambers 104 on the partition 1.

[0073] Specifically, the partition 1 includes a first body portion and a second body portion stacked together. The first body portion has a first groove, and the second body portion has a second groove. When the first body portion and the second body portion are stacked together, the first groove and the second groove are positioned opposite each other and enclose a flexible cavity. The first groove and the second groove are arranged in a one-to-one correspondence, and the number of these grooves is the same as the number of flexible cavities 104.

[0074] Multiple flexible chambers 104 are spaced apart around the central hole 101. In this embodiment, there are four flexible chambers 104, evenly distributed circumferentially. Of course, the number of flexible chambers 104 can be adjusted according to actual needs, and can be two, three, five, six or more. The distribution of the flexible chambers 104 can also be adjusted according to actual needs, and can be uniformly distributed or non-uniformly distributed to adapt to different load distribution conditions.

[0075] The presence of the flexible chamber 104 results in lower local stiffness of the partition 1 in the region corresponding to the flexible chamber 104. When the partition 1 is subjected to an axial force from the roller 4, the top and bottom walls of the flexible chamber 104 can undergo elastic deformation, thereby achieving adaptive adjustment to the contact state.

[0076] The dimensions (including length, width, and height) of the flexible chamber 104 can be designed according to actual needs. A larger flexible chamber 104 means a larger flexible area and lower local stiffness; a smaller flexible chamber 104 means a smaller flexible area and higher local stiffness. In addition, the interior of the flexible chamber 104 can be filled with different media (such as air, nitrogen, liquid, or elastomer) to achieve different stiffness characteristics.

[0077] The advantages of this embodiment are: the flexible chamber 104 is more flexible in processing; grooves can be formed on the first and second body parts respectively by casting, forging, machining or stamping, and then the first and second body parts can be combined together by welding, bonding, bolting or interference fit. This split structure also facilitates the maintenance and replacement of the flexible chamber.

[0078] In addition, the design of the flexible chamber 104 allows for the formation of a hollow structure in the thickness direction of the partition 1, which reduces the weight of the partition 1 to some extent and helps to reduce the overall weight and rotational inertia of the compressor.

[0079] The compressor with a variable flexible partition provided by this invention can be widely used in various rotary compressors, especially rolling rotor compressors in household air conditioners, commercial air conditioners, refrigerators and freezers, heat pump systems, and automotive air conditioners. The partition structure of this invention is simple, easy to process, and low in cost. It can effectively improve the reliability of the compressor, reduce operating noise, and extend its service life without significantly increasing the overall cost of the compressor. It has extremely high industrial practical value and broad market application prospects.

[0080] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A separator for a compressor, characterized in that, The partition (1) is provided with a central hole (101) through which the crankshaft (2) passes. A flexible groove (102) is provided on the partition (1) along its radial direction. The opening of the flexible groove (102) is located on the side wall of the central hole (101). The flexible groove (102) is arranged around the central hole (101).

2. The compressor baffle according to claim 1, characterized in that, The upper and lower sides of the cross-sectional shape of the flexible groove (102) are arranged in parallel.

3. The compressor baffle according to claim 1, characterized in that, The cross-sectional shape of the flexible groove (102) is U-shaped, V-shaped, C-shaped or trapezoidal.

4. The compressor baffle according to claim 1, characterized in that, The cross-sectional shape of the flexible groove (102) is stepped at least on one of the two end faces of the partition (1), and the width of the flexible groove (102) gradually decreases from the opening to the root.

5. The compressor baffle according to any one of claims 1-4, characterized in that, An elastic element is provided inside the flexible groove (102), and the elastic element can elastically deform in the axial direction of the partition (1); and / or The flexible groove (102) is provided with a plurality of elastic elements, which are arranged at intervals around the central hole (101).

6. The compressor baffle according to claim 5, characterized in that, The elastic element is a compression spring or a rubber spring.

7. A compressor baffle, characterized in that, The partition (1) is provided with a central hole (101) through which the crankshaft (2) passes, and the partition (1) is provided with an annular flexible chamber (104), which is spaced around the central hole (101).

8. A separator for a compressor, characterized in that, The partition (1) is provided with a central hole (101) through which the crankshaft (2) passes, and the partition (1) is provided with a plurality of flexible chambers (104), which are spaced apart around the central hole (101).

9. The compressor baffle according to claim 7 or 8, characterized in that, The partition (1) includes a first body part and a second body part stacked together. The first body part is provided with a first groove, and the second body part is provided with a second groove. The first groove and the second groove surround each other to form the flexible cavity (104).

10. A compressor, characterized in that, It includes the partition as described in any one of claims 1-9.

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