Scroll compressor

Abstract

The utility model relates to a scroll compressor. The scroll compressor comprises a shell, a partition plate, a scroll assembly and an exhaust assembly. The partition plate divides the internal space of the shell into a high-pressure cavity located above the partition plate and a low-pressure cavity located below the partition plate. A central through hole is formed in the partition plate; the vortex assembly is arranged in the low-pressure cavity; an exhaust port is formed in the position, corresponding to the central through hole, of the vortex assembly; the exhaust component is mounted on the vortex component and corresponds to the exhaust port; the exhaust assembly comprises a valve plate used for covering the exhaust port and a limiting piece arranged above the valve plate. The limiting piece is used for limiting a moving space for the valve plate to open or close the exhaust port; the partition plate and / or the limiting piece are / is used for forming a noise reduction area located in the high-pressure cavity in an enclosing mode. An assembly gap is formed between the partition plate and the limiting piece; the compressed gas is configured to enter the silencing area through the exhaust port and enter the high-pressure cavity through the assembly gap.

Description

Technical Field

[0001] This disclosure relates to the field of refrigeration equipment technology, specifically to a scroll compressor. Background Technology

[0002] Scroll compressors, as a type of high-efficiency positive displacement compressor, are widely used in refrigeration, air conditioning, and industrial gas compression fields due to their compact structure and stable operation. Their working principle relies on the meshing motion of the moving and stationary scroll plates to form a continuous compression chamber. Gas is gradually compressed as it moves towards the center of the stationary scroll plate and is finally discharged through the exhaust port at the top of the stationary scroll plate. However, during the high-pressure exhaust stage, significant aerodynamic and mechanical vibration noise is easily generated at the exhaust port, which has become a technical bottleneck restricting the development of this type of compressor towards lower noise levels.

[0003] Specifically, when high-pressure gas is suddenly released from the narrow compression chamber through the exhaust port into the external pipeline, the rapid change in airflow velocity generates strong turbulence and pressure pulsation, causing aerodynamic noise. Simultaneously, the periodic impact of the airflow on the valve plates and structural resonance further amplify the mechanical noise. Existing technologies typically employ methods such as adding silencers and covering with sound-absorbing materials to reduce noise. However, given the dense internal components and limited space of scroll compressors, the manufacturing process for additional noise-reducing components is challenging and costly. Utility Model Content

[0004] This disclosure provides a scroll compressor to address the problems existing in the prior art.

[0005] According to a first aspect of this disclosure, a scroll compressor is provided, comprising:

[0006] case;

[0007] A partition plate is configured to divide the internal space of the housing into a high-pressure chamber located above the partition plate and a low-pressure chamber located below the partition plate; the partition plate is provided with a central through hole;

[0008] A vortex assembly is disposed within the low-pressure chamber; an exhaust port is provided on the vortex assembly corresponding to the position of the central through hole;

[0009] An exhaust assembly is mounted on the vortex assembly at a position corresponding to the exhaust port; the exhaust assembly includes a valve plate for covering the exhaust port and a limiting member disposed above the valve plate; the limiting member is configured to restrict the movement space for the valve plate to open or close the exhaust port;

[0010] The partition plate and / or the limiting member are used to enclose and form a silencing zone located within the high-pressure chamber; there is an assembly gap between the partition plate and the limiting member; the compressed gas is configured to enter the silencing zone through the exhaust port and enter the high-pressure chamber through the assembly gap.

[0011] In one embodiment of this disclosure, the valve plate is configured to move along a first axis, and the limiting member includes a main body portion perpendicular to the first axis and corresponding to the valve plate, and a first extension portion extending outward from the main body portion; in the direction of the first axis, the projection of the first extension portion does not overlap with that of the valve plate, and the diameter ratio of the first extension portion to the main body portion is in the range of 110%-300%.

[0012] In one embodiment of this disclosure, the first extension includes a horizontal portion formed by the main body extending outward; a second extension is provided on the partition plate at a position corresponding to the edge of the central through hole, the second extension being configured to extend upward to a position higher or lower than the horizontal portion to form the assembly gap with the horizontal portion; the distance between the upper end face of the second extension and the horizontal portion is in the range of 0-10mm.

[0013] In one embodiment of this disclosure, the second extension is configured to enclose the silencing zone with the limiting member; the compressed gas is configured to enter the silencing zone through the exhaust port and enter the high-pressure chamber through the assembly gap.

[0014] In one embodiment of this disclosure, a silencing hole is provided on the horizontal portion and / or the second extension portion; the gas in the silencing zone is configured to enter the high-pressure chamber through the silencing hole and the assembly gap.

[0015] In one embodiment of this disclosure, the second extension is configured to extend upward to a position higher than the horizontal portion, and a top cover covering the limiting member is provided on the second extension; the top cover is configured to enclose the silencing area with the second extension, the silencing area including a first silencing cavity located below the limiting member and a second silencing cavity located above the limiting member;

[0016] A silencing hole is provided on the top cover and / or the second extension. The compressed gas is configured to enter the first silencing chamber through the exhaust port, enter the second silencing chamber through the assembly gap, and enter the high-pressure chamber through the silencing hole on the top cover and / or the second extension.

[0017] In one embodiment of this disclosure, a silencing hole is provided on the horizontal portion; the gas in the first silencing chamber is configured to enter the second silencing chamber through the silencing hole on the horizontal portion and the assembly gap.

[0018] In one embodiment of this disclosure, at least one of the end face of the second extension toward the horizontal portion and the end face of the horizontal portion toward the second extension is configured as a concave-convex end face; the protruding position of the concave-convex end face is configured to enclose and form the assembly gap, and the recessed position of the concave-convex end face is configured to enclose and form a silencing hole; the compressed gas is configured to enter the silencing zone through the exhaust port, and enter the high-pressure chamber through the silencing hole and the assembly gap.

[0019] In one embodiment of this disclosure, the first extension includes a horizontal portion extending outward from the main body portion and a side portion connected to the horizontal portion and extending in a vertical direction; the side portion is configured to extend downward to a position adjacent to the partition plate to form the assembly gap with the upper edge of the central through hole.

[0020] In one embodiment of this disclosure, the horizontal portion is configured to enclose the silencing zone with the side portion; the compressed gas is configured to enter the silencing zone through the exhaust port and enter the high-pressure chamber through the assembly gap.

[0021] In one embodiment of this disclosure, a silencing hole is provided on the horizontal portion and / or the side portion; the gas in the silencing zone is configured to enter the high-pressure chamber through the silencing hole and the assembly gap.

[0022] In one embodiment of this disclosure, at least one of the end face of the side portion facing the partition plate and the end face of the partition plate facing the side portion is configured as a concave-convex end face; the protruding position of the concave-convex end face is configured to enclose and form the assembly gap, and the concave position of the concave-convex end face is configured to enclose and form a silencing hole; the compressed gas is configured to enter the silencing zone through the exhaust port, and enter the high-pressure chamber through the silencing hole and the assembly gap.

[0023] In one embodiment of this disclosure, the limiting member is configured as a structure integrally formed by powder metallurgy.

[0024] In one embodiment of this disclosure, the size range of the assembly gap is 0-10 mm.

[0025] In one embodiment of this disclosure, the size range of the assembly gap is 0-3 mm.

[0026] In one embodiment of this disclosure, the partition plate and / or the limiting member are provided with silencing holes, and / or the partition plate and the limiting member enclose and form silencing holes; the gas in the silencing zone is configured to enter the high-pressure chamber through the silencing holes and the assembly gap.

[0027] In one embodiment of this disclosure, a plurality of silencing holes are provided, and the diameter of each silencing hole ranges from 2 to 8 mm; the ratio of the distance between two adjacent silencing holes to the diameter of the silencing hole ranges from 100% to 300% mm.

[0028] One beneficial effect of this disclosure is that by enclosing a silencing zone with partition plates and / or limiting members, and connecting the silencing zone to the high-pressure chamber through the assembly gap between the partition plates and limiting members, the compressed gas can first enter the relatively open silencing zone through the narrow exhaust port for buffering, and then enter the high-pressure chamber through the assembly gap. The silencing zone can buffer the compressed airflow, preventing the airflow from directly rushing into the high-pressure chamber and impacting the inner wall of the housing, thus preventing mechanical noise. Furthermore, because the valve plate moves within the silencing zone, it blocks the mechanical noise caused by the periodic impact of the valve plate. In addition, the assembly gap can refract, scatter, and reflect sound waves in the airflow, thereby effectively reducing the aerodynamic noise of the airflow. Furthermore, this disclosure utilizes existing components in scroll compressors such as partition plates and / or limiting members to achieve noise reduction, thus eliminating the need for an additional silencer and effectively reducing manufacturing process difficulty and cost.

[0029] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0031] Figure 1 This is a schematic diagram of a scroll compressor structure provided in an embodiment of the present disclosure;

[0032] Figure 2 This is a cross-sectional view of a scroll compressor provided in an embodiment of this disclosure;

[0033] Figure 3 This is a partially enlarged view of the location of the exhaust assembly provided in an embodiment of this disclosure;

[0034] Figure 4 This is a partial cross-sectional view of a scroll compressor provided in an embodiment of this disclosure;

[0035] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0036] Figure 6 This is a partial structural schematic diagram of a scroll compressor provided in an embodiment of the present disclosure;

[0037] Figure 7 This is a partial cross-sectional view of a scroll compressor provided in another embodiment of this disclosure;

[0038] Figure 8 This is a partial top view of a scroll compressor provided in an embodiment of this disclosure;

[0039] Figure 9 This is a partial top view of a scroll compressor provided in another embodiment of this disclosure;

[0040] Figure 10 This is a partial cross-sectional view of a scroll compressor provided in another embodiment of this disclosure;

[0041] Figure 11 This is a partial structural schematic diagram of a scroll compressor provided in another embodiment of the present disclosure;

[0042] Figure 12 This is a partial cross-sectional view of a scroll compressor provided in another embodiment of this disclosure.

[0043] Figures 1 to 12 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0044] 1. Housing; 101. High-pressure chamber; 102. Low-pressure chamber; 11. Air inlet; 12. Air outlet; 2. Partition plate; 21. Central through hole; 22. Second extension; 23. Top cover; 3. Vortex assembly; 301. Stationary vortex component; 302. Moving vortex component; 31. Exhaust port; 4. Drive mechanism; 5. Exhaust assembly; 51. Valve plate; 52. Limiting component; 521. Main body; 522. Horizontal part; 523. Side part; 6. Silencing area; 61. First silencing chamber; 62. Second silencing chamber; 7. Silencing hole; 8. Assembly gap; 9. Concave and convex end faces; 91. Protrusion; 92. Recess. Detailed Implementation

[0045] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0046] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0047] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0049] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0050] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0051] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0052] This disclosure provides a scroll compressor, referenced Figure 1 and Figure 2 The scroll compressor includes at least a housing 1, a partition plate 2, a scroll assembly 3, and an exhaust assembly 5. The partition plate 2 is configured to divide the internal space of the housing 1 into a high-pressure chamber 101 located above the partition plate 2 and a low-pressure chamber 102 located below the partition plate 2. The scroll assembly 3 is disposed within the low-pressure chamber 102 and is configured to compress the refrigerant gas within the low-pressure chamber 102 under the control of a drive mechanism 4. Specifically, as... Figure 1 As shown, the housing 1 is provided with an air inlet 11 and an air outlet 12. The air inlet 11 is connected to the low-pressure chamber 102, and the air outlet 12 is connected to the high-pressure chamber 101. External refrigerant gas can enter the low-pressure chamber 102 from the air inlet 11 and be compressed by the vortex assembly 3. The compressed refrigerant gas can enter the high-pressure chamber 101 and be discharged from the air outlet 12.

[0053] refer to Figure 2 The vortex assembly 3 includes a stationary vortex member 301 and a moving vortex member 302. A compression chamber for compressing refrigerant gas is formed between the stationary vortex member 301 and the moving vortex member 302. The refrigerant gas entering the low-pressure chamber 102 through the inlet 11 can flow into the compression chamber. The moving vortex member 302 is configured to move relative to the stationary vortex member 301 under the control of the drive mechanism 4, thereby changing the volume of the compression chamber and thus compressing the refrigerant gas in the compression chamber.

[0054] refer to Figures 3 to 5The partition plate 2 is provided with a central through hole 21, and the vortex assembly 3 is provided with an exhaust port 31 corresponding to the central through hole 21. Specifically, the exhaust port 31 can be opened on the vortex assembly 3 near its center. The exhaust port 31 can extend vertically, with its bottom end connecting to the air inlet end of the compression chamber and its top end connecting to the air outlet end of the high-pressure chamber 101. The compressed refrigerant gas enters from the air inlet end of the exhaust port 31 and is discharged into the high-pressure chamber 101 from the air outlet end of the exhaust port 31.

[0055] The exhaust assembly 5 is installed on the vortex assembly 3 at the position corresponding to the exhaust port 31. Specifically, the exhaust assembly 5 can be an exhaust valve for cooperating with the exhaust port 31, such as... Figure 2 As shown, the exhaust assembly 5 is installed inside the high-pressure chamber 101. (Reference) Figure 3 The exhaust assembly 5 includes a valve plate 51 for covering an exhaust port 31, and a limiting member 52 disposed above the valve plate 51, the limiting member 52 being configured to restrict the movement space for the valve plate 51 to open or close the exhaust port 31. The valve plate 51 is configured to move along a first axis that extends in a vertical direction.

[0056] When the scroll compressor is not operating, valve plate 51 covers and seals the exhaust port 31, preventing high-pressure gas in the high-pressure chamber 101 from flowing back into the low-pressure chamber 102 through the exhaust port 31, which could cause abnormal noise or damage to the internal components of the scroll compressor. When the scroll compressor operates and compresses the refrigerant gas into a high-pressure gas flow, the high-pressure gas flow applies pressure to valve plate 51, causing valve plate 51 to move or deform, thereby opening the exhaust port 31, allowing the high-pressure gas flow to exit from the exhaust port 31 into the high-pressure chamber 101. Because the refrigerant gas needs to be compressed into a sufficiently high-pressure gas flow to open valve plate 51, the pressure ratio and performance of the scroll compressor are improved.

[0057] There is a movable space between the limiting member 52 and the exhaust port 31, within which the valve plate 51 can move or deform to open or close the exhaust port 31. This disclosure, by providing the limiting member 52, can constrain and limit the opening degree of the valve plate 51, preventing damage or failure of the exhaust assembly 5 caused by excessive stroke or bending of the valve plate 51. The limiting member 52 can be set at different height positions according to actual needs, thus adapting to different stroke and opening degree requirements of the valve plate 51.

[0058] In one specific embodiment of this disclosure, the limiting member 52 includes a main body 521 perpendicular to the first axis and corresponding to the valve plate 51, and a first extension portion extending outward from the main body 521. The main body 521 and the first extension portion can be integrally formed. In the direction of the first axis, the projections of the main body 521 and the valve plate 51 at least partially overlap, while the projections of the first extension portion and the valve plate 51 do not overlap. The diameter ratio between the first extension portion and the main body 521 ranges from 110% to 300%. The main body 521 is correspondingly disposed to the valve plate 51, for example, it can be disposed directly above the valve plate 51, thereby directly blocking the valve plate 51 and restricting the degree of freedom of movement of the valve plate 51.

[0059] The partition plate 2 and / or the limiting member 52 are used to enclose and form a silencing zone 6 located within the high-pressure chamber 101. An assembly gap 8 exists between the partition plate 2 and the limiting member 52. The compressed gas is configured to enter the silencing zone 6 through the exhaust port 31 and then enter the high-pressure chamber 101 through the assembly gap 8. This disclosure, by enclosing the silencing zone 6 with the partition plate 2 and / or the limiting member 52 and connecting the silencing zone 6 to the high-pressure chamber 101 through the assembly gap 8, allows the compressed gas to first enter the relatively open silencing zone 6 through the narrow exhaust port 31 for buffering, and then enter the high-pressure chamber 101 through the assembly gap 8. The silencing zone 6 buffers the compressed airflow, preventing it from directly entering the high-pressure chamber 101 and impacting the inner wall of the housing 1, thus preventing mechanical noise. Furthermore, the movement of the valve plate 51 within the silencing zone 6 blocks the mechanical noise caused by the periodic impact of the valve plate 51. Additionally, the assembly gap 8 refracts, scatters, and reflects sound waves in the airflow, effectively reducing aerodynamic noise. Moreover, this disclosure utilizes existing components in the scroll compressor, such as the partition plate 2 and / or the limiting member 52, to achieve noise reduction, eliminating the need for an additional silencer and effectively reducing manufacturing complexity and cost.

[0060] In one embodiment of this disclosure, the partition plate 2 and / or the limiting member 52 are provided with a silencing hole 7, and / or the partition plate 2 and the limiting member 52 enclose each other to form a silencing hole 7. The compressed gas is configured to enter the silencing zone 6 through the exhaust port 31, and then enter the high-pressure chamber 101 through the silencing hole 7 and the assembly gap 8. The silencing hole 7, together with the assembly gap 8, can refract, scatter, and reflect sound waves in the airflow, thereby effectively reducing the aerodynamic noise of the airflow. The silencing hole 7 can be configured as a circular hole or other configurations that facilitate silencing, thereby improving the noise reduction effect.

[0061] In one specific embodiment of this disclosure, when the silencing hole 7 is provided on the limiting member 52, the silencing hole 7 can be opened on the first extension, so that it is not necessary to open a hole on the main body 521, thereby avoiding affecting the limiting function of the main body 521.

[0062] The following will describe in detail, with reference to the accompanying drawings, five specific embodiments of the partition plate 2 and the limiting member 52, their specific structures and their arrangement methods, the specific arrangement methods of the silencing area 6, the silencing hole 7 and the assembly gap 8 in each embodiment, and how each structure cooperates with each other to achieve the silencing and noise reduction functions.

[0063] Example 1

[0064] refer to Figure 4 and Figure 5 In the scroll compressor provided in this embodiment, the first extension includes a horizontal portion 522 formed by extending horizontally outward from the main body portion 521. The horizontal portion 522 can be integrally formed with the main body portion 521, and the projection of the horizontal portion 522 and the valve plate 51 does not overlap in the first axial direction. A second extension 22 is provided on the partition plate 2 at a position corresponding to the edge of the central through hole 21. The second extension 22 is configured to extend upward to a position higher or lower than the horizontal portion 522 to form an assembly gap 8 with the horizontal portion 522; the distance between the upper end face of the second extension 22 and the horizontal portion 522 ranges from 0 to 10 mm. The second extension 22 can be integrally formed with the partition plate 2. Specifically, the second extension 22 can be a cylindrical structure formed by extending upward from the central through hole 21. The second extension 22 can extend to a position where its end face is 10 mm higher than the horizontal portion 522, and can extend to a position where its end face is 10 mm lower than the horizontal portion 522. For example, it can extend to a position that is basically flush with the horizontal portion 522.

[0065] In one specific embodiment of this example, the second extension 22 may extend upwards until its upper end face is lower than the bottom end face of the horizontal portion 522. In this case, the horizontal portion 522 may extend horizontally to be substantially flush with the outer diameter of the second extension 22, or may extend slightly beyond the outer diameter of the second extension 22, thereby forming an assembly gap 8 between the lower end face of the horizontal portion 522 and the upper end face of the second extension 22. Alternatively, the horizontal portion 522 may extend horizontally to be substantially flush with the inner diameter of the second extension 22, thereby forming an assembly gap 8 between the lower edge of the horizontal portion 522 and the upper edge of the second extension 22.

[0066] In one specific implementation of this embodiment, such as Figure 5 As shown, the second extension 22 can extend upward to a position that is substantially flush with or slightly higher than the horizontal part 522. At this time, the horizontal extension length of the horizontal part 522 is less than the inner diameter of the second extension 22, thereby forming an assembly gap 8 between the outer wall of the horizontal part 522 and the inner wall of the second extension 22.

[0067] The second extension 22 is configured to enclose a silencing zone 6 with the limiting member 52. This silencing zone 6 communicates with the compression chamber via the exhaust port 31 and with the high-pressure chamber 101 via the assembly gap 8. The compressed gas is configured to enter the silencing zone 6 through the exhaust port 31 and enter the high-pressure chamber 101 via the assembly gap 8. The silencing zone 6 buffers the compressed airflow, preventing the airflow from directly entering the high-pressure chamber 101 and impacting the inner wall of the housing 1, thus preventing mechanical noise. Furthermore, the movement of the valve plate 51 within the silencing zone 6 blocks the mechanical noise caused by the periodic impact of the valve plate 51. In addition, the assembly gap 8 refracts, scatters, and reflects sound waves in the airflow, thereby effectively reducing the aerodynamic noise of the airflow.

[0068] like Figure 5 As shown, in one embodiment of this example, a silencing hole 7 is provided on the horizontal portion 522 and / or the second extension portion 22. Specifically, the silencing hole 7 may be provided only on the horizontal portion 522, only on the second extension portion 22, or on both the horizontal portion 522 and the second extension portion 22. Thus, the silencing zone 6 can communicate with the high-pressure chamber 101 through the silencing hole 7 and the assembly gap 8. The gas in the silencing zone 6 is configured to enter the high-pressure chamber 101 through the silencing hole 7 and the assembly gap 8, thereby enabling the silencing hole 7 and the assembly gap 8 to jointly refract, scatter, and reflect the sound waves in the airflow, effectively reducing the aerodynamic noise of the airflow.

[0069] Example 2

[0070] Similar to Embodiment 1, the first extension is also a horizontal portion 522 formed by the main body 521 extending outwards. The main difference between this embodiment and Embodiment 1 lies in the specific structure of the second extension 22 on the partition plate 2. (See reference...) Figures 6 to 7 The second extension 22 is configured to extend upward to a position higher than the horizontal portion 522, and a top cover 23 covering the limiting member 52 is provided on the second extension 22. The partition plate 2, the second extension 22, and the top cover 23 can be integrally formed. Furthermore, the horizontal extension length of the horizontal portion 522 is less than the inner diameter of the second extension 522, thereby forming an assembly gap 8 between the outer wall of the horizontal portion 522 and the inner wall of the second extension 22.

[0071] The top cover 23 is configured to enclose the second extension 22 to form a silencing zone 6. The exhaust assembly 5 is fully fastened within the silencing zone 6. In this way, the top cover 23 and the second extension 22 block the mechanical noise generated by the operation of the exhaust assembly 5, and can buffer and block the airflow entering the silencing zone 6 from the exhaust port 31, thus preventing the airflow from directly impacting the inner wall of the housing 1.

[0072] Furthermore, the limiting member 52 divides the silencing area 6 into two parts. The silencing area 6 includes a first silencing cavity 61 located below the limiting member 52 and a second silencing cavity 62 located above the limiting member 52. Silencing holes 7 are provided on the top cover 23 and / or the second extension 22. The compressed gas is configured to enter the first silencing cavity 61 through the exhaust port 31, enter the second silencing cavity 62 through the assembly gap 8, and enter the high-pressure chamber 101 through the silencing holes 7 on the top cover 23 and / or the second extension 22.

[0073] In another specific embodiment, a silencing hole 7 is also provided on the horizontal part 522; the gas in the first silencing cavity 61 is configured to enter the second silencing cavity 62 through the silencing hole 7 on the horizontal part 522 and the assembly gap 8.

[0074] Specifically, the assembly gap 8 between the outer wall of the horizontal part 522 and the inner wall of the second extension 22, and the silencing hole 7 opened on the horizontal part 522 can connect the first silencing cavity 61 to the second silencing cavity 62, the silencing hole 7 opened on the top cover 23 can connect the second silencing cavity 62 to the high-pressure cavity 101, and the silencing hole 7 opened on the second extension 22 can connect the first silencing cavity 61 or the second silencing cavity 62 to the high-pressure cavity 101. It is understood that when the silencing hole 7 on the second extension 22 is located below the horizontal part 522, the silencing hole 7 can connect the first silencing cavity 61 to the high-pressure cavity 101; when the silencing hole 7 on the second extension 22 is located above the horizontal part 522, the silencing hole 7 can connect the second silencing cavity 62 to the high-pressure cavity 101. In this disclosure, it is preferred to open the silencing hole 7 on the second extension 22 at a position above the horizontal part 522, thus limiting the airflow path to: exhaust port 31, first silencing cavity 61, second silencing cavity 62, high-pressure cavity 101, and not directly enter the high-pressure cavity 101 from the first silencing cavity 61.

[0075] In this embodiment, by setting the silencing zone 6 as a double silencing cavity, the compressed airflow can be buffered twice, further reducing the kinetic energy of the airflow when it enters the high-pressure cavity 101, thereby better reducing the mechanical noise of the airflow impacting the inner wall of the housing 1. When the airflow enters the second silencing cavity 62 from the first silencing cavity 61, it needs to pass through the silencing hole 7 or the assembly gap 8. When it enters the high-pressure cavity 101 from the second silencing cavity 62, it needs to pass through the silencing hole 7 again. The silencing hole 7 and the assembly gap 8 can refract, scatter, and reflect the sound waves in the airflow. In this embodiment, the airflow passes through the silencing hole 7 and the assembly gap 8 twice, thereby better reducing the aerodynamic noise of the airflow.

[0076] Example 3

[0077] Similar to Embodiment 1, the first extension is also a horizontal portion 522 formed by the main body 521 extending outwards horizontally, and a second extension 22 is also provided on the partition plate 2 at the position corresponding to the edge of the central through hole 21. (See reference) Figures 8 to 9 The main difference between this embodiment and Embodiment 1 is that at least one of the end face of the second extension 22 facing the horizontal portion 522 and the end face of the horizontal portion 522 facing the second extension 22 is constructed as a concave-convex end face 9. Wherein, Figure 8 This illustrates the case where the end face of the horizontal portion 522 facing the second extension portion 22 is constructed as a concave-convex end face 9, and Figure 9 The diagram shows the case where the end face of the second extension 22 facing the horizontal portion 522 is configured as a concave-convex end face 9. The concave-convex end face 9 can be configured as a wave shape, a tooth shape, or other shapes, and this disclosure does not specifically limit it in this regard.

[0078] The second extension 22 and the horizontal portion 522 have opposite end faces. For example, when the upper end face of the second extension 22 is lower than the bottom end face of the horizontal portion 522, and the horizontal portion 522 extends horizontally to be flush with or slightly beyond the outer diameter of the second extension 22, then the lower end face of the horizontal portion 522 and the upper end face of the second extension 22 are two opposite end faces; or, when the second extension 22 is flush with or higher than the horizontal portion 522, refer to... Figure 8 and Figure 9 If the horizontal extension length of the horizontal portion 522 is less than the inner diameter of the second extension portion 522, then the outer wall of the horizontal portion 522 and the inner wall of the second extension portion 22 are two end faces that are opposite to each other.

[0079] At least one of the two opposing end faces can be configured as a concave-convex end face 9. The protrusion 91 of the concave-convex end face 9 is configured to enclose and form an assembly gap 8, and the recess 92 of the concave-convex end face 9 is configured to enclose and form a silencing hole 7. Taking only one concave-convex end face 9 as an example, the distance between the protrusion 91 and its corresponding other end face is small, and they will not be completely fitted, thus enclosing and forming the assembly gap 8. The distance between the recess 92 and its corresponding other end face is large, thus enclosing and forming a relatively large silencing hole 7.

[0080] In another embodiment of this invention, both opposite end faces are constructed as concave-convex end faces 9. The protrusions 91 of the two concave-convex end faces 9 can be positioned correspondingly, and the recesses 92 of the two concave-convex end faces 9 can be positioned correspondingly. The distance between the two protrusions 91 is small, thus forming an assembly gap 8; the distance between the two recesses 92 is large, thus enclosing a relatively large sound-absorbing hole 7.

[0081] The second extension 22 is configured to enclose the limiting member 52 to form a silencing zone 6. This silencing zone 6 communicates with the compression chamber through the exhaust port 31 and with the high-pressure chamber 101 through the silencing hole 7 and the assembly gap 8. The compressed gas is configured to enter the silencing zone 6 through the exhaust port 31 and then enter the high-pressure chamber 101 through the silencing hole 7 and the assembly gap 8 formed between the second extension 22 and the horizontal part 522. This eliminates the need for additional openings in the partition plate 2 and the limiting member 52; instead, the silencing hole 7 and the assembly gap 8 are cleverly formed during assembly by cleverly configuring the end faces of the two components, thus simplifying the manufacturing process.

[0082] Example 4

[0083] The main difference between this embodiment and the three embodiments described above is that the second extension 22 is not required on the partition plate 2. Specifically, refer to... Figure 10 In the scroll compressor provided in this embodiment, the first extension includes a horizontal portion 522 formed by the main body portion 521 extending horizontally outward, and a side portion 523 connected to the horizontal portion 522 and extending in the vertical direction. The main body portion 521, the horizontal portion 522 and the side portion 523 can be integrally formed to constitute a limiting member 52. The side portion 523 can be a flange formed by the outer edge of the horizontal portion 522 extending downward.

[0084] The side portion 523 is configured to extend downward to a position adjacent to the partition plate 2, forming an assembly gap 8 between it and the upper edge of the central through hole 21. The side portion 523 may be substantially aligned with the upper edge of the central through hole 21 on the partition plate 2, or it may only overlap with the projected portion of that upper edge. The lower end face of the side portion 523 is adjacent to the upper end face of the central through hole 21 of the partition plate 2, thereby enclosing and forming the assembly gap 8.

[0085] The horizontal portion 522 is configured to enclose the side portion 523 to form a silencing zone 6, i.e., the limiting member 52 encloses the silencing zone 6. This silencing zone 6 communicates with the compression chamber through the exhaust port 31 and with the high-pressure chamber 101 through the assembly gap 8. The compressed gas is configured to enter the silencing zone 6 through the exhaust port 31 and enter the high-pressure chamber 101 through the assembly gap 8. The silencing zone 6 can buffer the compressed airflow, preventing the airflow from directly rushing into the high-pressure chamber 101 and impacting the inner wall of the housing 1, thus preventing mechanical noise. Furthermore, since the valve plate 51 moves within the silencing zone 6, it blocks the mechanical noise caused by the periodic impact of the valve plate 51. In addition, the assembly gap 8 can refract, scatter, and reflect sound waves in the airflow, thereby effectively reducing the aerodynamic noise of the airflow.

[0086] In one embodiment of this disclosure, such as Figure 10As shown, silencing holes 7 are provided on the horizontal portion 522 and / or the side portion 523. Specifically, the silencing holes 7 can be provided only on the horizontal portion 522, only on the side portion 523, or on both the horizontal portion 522 and the side portion 523. In this way, the silencing zone 6 can communicate with the high-pressure chamber 101 through the silencing holes 7 and the assembly gap 8. The gas in the silencing zone 6 is configured to enter the high-pressure chamber 101 through the silencing holes 7 and the assembly gap 8, thereby enabling the silencing holes 7 and the assembly gap 8 to jointly refract, scatter, and reflect the sound waves in the airflow, thereby effectively reducing the aerodynamic noise of the airflow.

[0087] Example 5

[0088] Similar to Embodiment 4, the first extension also includes a horizontal portion 522 formed by the main body portion 521 extending horizontally outward, and a side portion 523 connected to the horizontal portion 522 and extending vertically. (See reference) Figure 11 and Figure 12 The main difference between this embodiment and embodiment four is that at least one of the end face of the side portion 523 facing the partition plate 2 and the end face of the partition plate 2 facing the side portion 523 is constructed as a concave-convex end face 9. Wherein, Figure 11 and Figure 12 The diagram shows the case where the end face of the side portion 523 facing the partition plate 2 is configured as a concave-convex end face 9. The concave-convex end face 9 can be configured as a wave shape, a tooth shape, or other shapes, and this disclosure does not specifically limit it in this regard.

[0089] The protrusion 91 of the concave-convex end face 9 is configured to enclose and form an assembly gap 8, and the recess 92 of the concave-convex end face 9 is configured to enclose and form a sound-absorbing hole 7. Taking only one concave-convex end face 9 as an example, the distance between the protrusion 91 and its corresponding other end face is small, and they will not be completely fitted, thus enclosing and forming the assembly gap 8, while the distance between the recess 92 and its corresponding other end face is large, thus enclosing and forming a relatively large sound-absorbing hole 7.

[0090] In another embodiment of this invention, both opposite end faces are constructed as concave-convex end faces 9. The protrusions 91 of the two concave-convex end faces 9 can be positioned correspondingly, and the recesses 92 of the two concave-convex end faces 9 can be positioned correspondingly. The distance between the two protrusions 91 is small, thus forming an assembly gap 8; the distance between the two recesses 92 is large, thus enclosing a relatively large sound-absorbing hole 7.

[0091] The horizontal portion 522 is configured to enclose and form a silencing zone 6 with the side portion 523. Specifically, the limiting member 52 encloses and forms the silencing zone 6. This silencing zone 6 communicates with the compression chamber through the exhaust port 31 and with the high-pressure chamber 101 through the silencing hole 7 and the assembly gap 8. The compressed gas is configured to enter the silencing zone 6 through the exhaust port 31 and then enter the high-pressure chamber 101 through the silencing hole 7 and the assembly gap 8 formed between the side portion 523 and the partition plate 2. This eliminates the need for additional openings in the limiting member 52. Instead, the silencing hole 7 and the assembly gap 8 are cleverly formed during assembly by cleverly designing the configuration of the side portion 523 or the end face of the partition plate, thus simplifying the manufacturing process.

[0092] In the above five embodiments, the partition plate 2 and the limiting member 52 can be enclosed to form an assembly gap 8. In a specific embodiment of this disclosure, the size range of the assembly gap 8 can be 0-10mm, preferably 0-3mm. The assembly gap 8 can compensate for production and assembly errors and prevent the parts from being assembled too tightly. When the assembly gap 8 is large, the assembly gap 8 can connect the silencing zone 6 to the high-pressure chamber 101, thereby playing a similar role in silencing and noise reduction as the silencing hole 7.

[0093] In one embodiment of this disclosure, the limiting member 52 is constructed as a structure integrally formed by powder metallurgy. Specifically, in the above five embodiments, the limiting member 52 can have various different configurations. For example, the limiting member 52 includes a main body portion 521 and a first extension portion, which may further include a horizontal portion 522 and a side portion 523. The end face of the horizontal portion 522 or the side portion 523 may also be constructed as a concave-convex end face 9. To achieve noise reduction and sound attenuation, this disclosure provides several novel limiting member 52 structures, which differ significantly in shape from the limiting member 52 in the conventional technology.

[0094] This disclosure employs a powder metallurgy integral molding process to manufacture the limiting component 52, thereby achieving near-net-shape forming and improving the dimensional accuracy of the limiting component 52. This allows for precise control of the assembly gap 8 and the dimensions of the silencing hole 7, avoiding significant dimensional errors that could affect the silencing effect. Furthermore, the powder metallurgy integral molding process offers high material utilization, energy efficiency, environmental friendliness, high production stability, excellent product mechanical properties, and a simple production process, enabling the rapid and stable production of limiting components 52 with complex shapes.

[0095] In one embodiment of this disclosure, multiple silencing holes 7 are provided. These holes 7 can be evenly distributed on the partition plate 2 and / or the limiting member 52, or multiple silencing holes 7 can be formed by the partition plate 2 and the limiting member 52 uniformly surrounding each other. The silencing holes 7 can be circular or other suitable shapes, such as square, elliptical, or triangular holes. Specifically, the diameter of each silencing hole 7 ranges from 2 to 8 mm, the ratio of the distance between two adjacent silencing holes 7 to the diameter of the silencing hole (7) ranges from 100% to 300%, and the size of each silencing hole 7 can be the same, or the size of each silencing hole 7 can be set differently according to the differences in the distribution area. This disclosure does not specifically limit this aspect.

[0096] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A scroll compressor, characterized in that, include: Shell (1); A partition plate (2) is configured to divide the internal space of the housing (1) into a high-pressure chamber (101) located above the partition plate (2) and a low-pressure chamber (102) located below the partition plate (2); the partition plate (2) is provided with a central through hole (21). A vortex assembly (3) is disposed in the low-pressure chamber (102); an exhaust port (31) is provided on the vortex assembly (3) at the position corresponding to the central through hole (21). An exhaust assembly (5) is installed on the vortex assembly (3) at a position corresponding to the exhaust port (31); the exhaust assembly (5) includes a valve plate (51) for covering the exhaust port (31) and a limiting member (52) disposed above the valve plate (51); the limiting member (52) is configured to limit the space for the valve plate (51) to open or close the exhaust port (31); The partition plate (2) and / or the limiting member (52) are used to enclose and form a silencing zone (6) located in the high-pressure chamber (101); there is an assembly gap (8) between the partition plate (2) and the limiting member (52); the compressed gas is configured to enter the silencing zone (6) through the exhaust port (31) and enter the high-pressure chamber (101) through the assembly gap (8).

2. The scroll compressor according to claim 1, characterized in that, The valve plate (51) is configured to move along a first axis, and the limiting member (52) includes a main body (521) perpendicular to the first axis and corresponding to the valve plate (51), and a first extension portion extending outward from the main body portion (521); in the direction of the first axis, the projection of the first extension portion does not overlap with that of the valve plate (51), and the diameter ratio of the first extension portion to the main body portion (521) is in the range of 110%-300%.

3. The scroll compressor according to claim 2, characterized in that, The first extension includes a horizontal portion (522) formed by the main body (521) extending outward horizontally; a second extension (22) is provided on the partition plate (2) at a position corresponding to the edge of the central through hole (21), the second extension (22) is configured to extend upward to a position higher or lower than the horizontal portion (522) to form the assembly gap (8) between it and the horizontal portion (522); the distance between the upper end face of the second extension (22) and the horizontal portion (522) is in the range of 0-10mm.

4. The scroll compressor according to claim 3, characterized in that, The second extension (22) is configured to enclose the silencing zone (6) with the limiting member (52); the compressed gas is configured to enter the silencing zone (6) through the exhaust port (31) and enter the high-pressure chamber (101) through the assembly gap (8).

5. The scroll compressor according to claim 4, characterized in that, A silencing hole (7) is provided on the horizontal part (522) and / or the second extension (22); the gas in the silencing area (6) is configured to enter the high-pressure chamber (101) through the silencing hole (7) and the assembly gap (8).

6. The scroll compressor according to claim 3, characterized in that, The second extension (22) is configured to extend upward to a position higher than the horizontal portion (522), and a top cover (23) covering the limiting member (52) is provided on the second extension (22); the top cover (23) is configured to enclose the second extension (22) to form the silencing area (6), the silencing area (6) including a first silencing cavity (61) located below the limiting member (52) and a second silencing cavity (62) located above the limiting member (52); A silencing hole (7) is provided on the top cover (23) and / or the second extension (22). The compressed gas is configured to enter the first silencing chamber (61) through the exhaust port (31), enter the second silencing chamber (62) through the assembly gap (8), and enter the high-pressure chamber (101) through the silencing hole (7) on the top cover (23) and / or the second extension (22).

7. The scroll compressor according to claim 6, characterized in that, A silencing hole (7) is provided on the horizontal part (522); the gas in the first silencing cavity (61) is configured to enter the second silencing cavity (62) through the silencing hole (7) on the horizontal part (522) and the assembly gap (8).

8. The scroll compressor according to claim 3, characterized in that, At least one of the end face of the second extension (22) facing the horizontal part (522) and the end face of the horizontal part (522) facing the second extension (22) is configured as a concave-convex end face (9); the protrusion (91) position of the concave-convex end face (9) is configured to enclose and form the assembly gap (8), and the recess (92) position of the concave-convex end face (9) is configured to enclose and form a silencing hole (7); the compressed gas is configured to enter the silencing zone (6) through the exhaust port (31), and enter the high pressure chamber (101) through the silencing hole (7) and the assembly gap (8).

9. The scroll compressor according to claim 2, characterized in that, The first extension includes a horizontal portion (522) formed by extending horizontally outward from the main body portion (521), and a side portion (523) connected to the horizontal portion (522) and extending in a vertical direction; the side portion (523) is configured to extend downward to a position adjacent to the partition plate (2) to form the assembly gap (8) between it and the upper edge of the central through hole (21).

10. The scroll compressor according to claim 9, characterized in that, The horizontal portion (522) is configured to enclose the silencing zone (6) with the side portion (523); the compressed gas is configured to enter the silencing zone (6) through the exhaust port (31) and enter the high-pressure chamber (101) through the assembly gap (8).

11. The scroll compressor according to claim 10, characterized in that, A silencing hole (7) is provided on the horizontal part (522) and / or the side part (523); the gas in the silencing area (6) is configured to enter the high-pressure chamber (101) through the silencing hole (7) and the assembly gap (8).

12. The scroll compressor according to claim 9, characterized in that, At least one of the end face of the side portion (523) facing the partition plate (2) and the end face of the partition plate (2) facing the side portion (523) is configured as a concave-convex end face (9); the protrusion (91) of the concave-convex end face (9) is configured to enclose and form the assembly gap (8), and the depression (92) of the concave-convex end face (9) is configured to enclose and form the silencing hole (7); the compressed gas is configured to enter the silencing zone (6) through the exhaust port (31), and enter the high-pressure chamber (101) through the silencing hole (7) and the assembly gap (8).

13. The scroll compressor according to any one of claims 1-12, characterized in that, The limiting member (52) is constructed as a structure integrally formed by powder metallurgy.

14. The scroll compressor according to any one of claims 1-12, characterized in that, The size range of the assembly gap (8) is 0-10mm.

15. The scroll compressor according to claim 14, characterized in that, The size range of the assembly gap (8) is 0-3mm.

16. The scroll compressor according to any one of claims 1-12, characterized in that, The partition plate (2) and / or the limiting member (52) are provided with a silencing hole (7), and / or the partition plate (2) and the limiting member (52) are enclosed to form a silencing hole (7); the gas in the silencing area (6) is configured to enter the high-pressure chamber (101) through the silencing hole (7) and the assembly gap (8).

17. The scroll compressor according to claim 16, characterized in that, The silencing holes (7) are provided in multiple ways, and the diameter of each silencing hole (7) is in the range of 2-8mm; the ratio of the distance between two adjacent silencing holes (7) to the diameter of the silencing hole (7) is in the range of 100%-300%.

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