Static scroll plate assembly of scroll compressor, scroll compressor and air conditioner

Abstract

The invention relates to the technical field of compressors, in particular to a static scroll plate assembly of a scroll compressor, the scroll compressor and an air conditioner. The static vortex plate assembly comprises a static vortex plate, a stop assembly, a check valve plate and an elastic piece. According to the check valve, the check plate is endowed with mobility to a certain extent, and the original rigid contact between the check valve plate and the check plate is changed into flexible contact, so that the impact force of the check valve plate on the check plate is effectively reduced, and the impact strength and noise generated in the opening process of the check valve plate are effectively reduced; the service life of the check valve plate and the check plate is prolonged, and the operation stability and the user experience of the whole machine are improved. Besides, the elastic piece cannot cause direct resistance to the upward initial movement of the check valve plate, so that the buffering and noise reduction effects are achieved, meanwhile, the quick and smooth opening characteristic of the check valve plate can still be kept, the response speed and the compression efficiency in the exhaust process are improved, and better comprehensive performance is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a stationary scroll assembly of a scroll compressor, a scroll compressor, and an air conditioner. Background Art

[0002] A scroll compressor is a fluid machine that compresses gas by changing its volume. When the compressor operates, gas enters from the suction port on the outer periphery of the stationary scroll disk into the compression chamber formed by the meshing of the scroll teeth of the moving and stationary scroll disks. Under the movement of the moving scroll disk, the volume of the compression chamber gradually decreases, and at the same time, the gas in the chamber is gradually compressed into the central exhaust chamber and discharged from the exhaust port of the stationary scroll disk.

[0003] During the actual operation process, whenever the exhaust chamber is in communication with the exhaust port of the stationary scroll disk, it is possible that the gas pressure in the exhaust chamber is initially less than the exhaust pressure, and the volume of the exhaust chamber needs to be further reduced to reach the exhaust pressure. At this time, the gas pressure outside the exhaust port of the stationary scroll disk is greater than the pressure in the exhaust chamber, and it is possible for the gas to flow back into the exhaust chamber, causing repeated compression. Another situation is that when the compressor stops, the crankshaft connected to the moving scroll disk does not have the power of the motor to provide unidirectional rotation. Since the gas pressure outside the exhaust port of the stationary scroll disk is greater than the gas pressure in the compression chamber, the gas will flow back into the compression chamber through the exhaust chamber, causing the moving scroll disk to rotate rapidly in reverse, posing a risk of damaging the compressor. A common method in the related art to prevent the gas from flowing back into the exhaust chamber is to provide an exhaust check structure at the exhaust port of the stationary scroll disk. When the gas flows from the exhaust chamber to the outside of the exhaust port of the stationary scroll disk, the exhaust check structure opens and the gas can pass through; when the gas flows back from the outside of the exhaust port of the stationary scroll disk into the exhaust chamber, the exhaust check structure closes to prevent the gas from continuing to pass through.

[0004] The problem with the exhaust check structure in the related art is that when the exhaust valve plate is blown up by the high-pressure gas at the exhaust port and stops quickly after colliding with the valve plate baffle above, a large impact is formed, which has an adverse effect on the service life of the valve plate and also generates a large amount of noise. Summary of the Invention

[0005] To solve the above technical problems, the present application provides a stationary scroll assembly of a scroll compressor, a scroll compressor, and an air conditioner.

[0006] According to the first aspect of the present application, an embodiment of the present application provides a stationary scroll assembly of a scroll compressor, which includes:

[0007] A stationary scroll disk, which has a through exhaust port.

[0008] A stop assembly, comprising a stop plate and a guide post connected to each other. The stop plate is located on the back side of the stationary scroll plate, and the guide post is slidably engaged with the stationary scroll plate so that the stop plate can reciprocate in a direction approaching and departing from the stationary scroll plate;

[0009] A check valve plate, slidably sleeved on the guide post and located between the stop plate and the stationary scroll plate. The check valve plate is movably disposed to cover the exhaust port;

[0010] An elastic member. The elastic restoring force generated by the elastic member has a tendency to move the stop plate toward the stationary scroll plate, and as the stop plate moves away from the stationary scroll plate, the elastic restoring force generated by the elastic member gradually increases.

[0011] Further, a counterbore is formed on the back surface of the stationary scroll plate. One end of the guide post away from the stop plate extends into the counterbore and is slidably engaged with the counterbore.

[0012] Further, a bulged portion slidably engaged with the counterbore is formed at one end of the guide post away from the stop plate. The elastic member is located in the counterbore and sleeved on the guide post. One end of the elastic member is fixedly disposed relative to the stationary scroll plate, and the other end of the elastic member abuts against the bulged portion.

[0013] Further, the stationary scroll plate assembly further includes a backing plate covering the back surface of the stationary scroll plate. The guide post penetrates through the backing plate, and the elastic member is disposed between the backing plate and the bulged portion.

[0014] Further, a through hole is provided on the backing plate opposite to the exhaust port, and the orthographic projection of the through hole on the back surface of the stationary scroll plate completely covers the exhaust port.

[0015] Further, a buffer block is provided at the bottom of the counterbore.

[0016] Further, a threaded section is provided on the guide post, and the threaded section is screwed and engaged with the stop plate.

[0017] Further, a through hole is formed on the stop plate and runs through it.

[0018] According to the second aspect of the present application, an embodiment of the present application provides a scroll compressor, which includes the stationary scroll plate assembly provided in the first aspect of the present application.

[0019] According to the third aspect of the present application, an embodiment of the present application provides an air conditioner, which includes the scroll compressor provided in the second aspect of the present application.

[0020] The scroll plate assembly provided by the present application endows the stop baffle with a certain degree of movability, changing the rigid contact between the check valve flap and the stop baffle into a flexible contact, thereby effectively reducing the impact force of the check valve flap on the stop baffle, effectively reducing the impact intensity and generated noise when the check valve flap opens, prolonging the service life of the check valve flap and the stop baffle, and improving the operation stability of the whole machine and the user experience. In addition, the elastic member does not directly resist the initial upward movement of the check valve flap. Therefore, while achieving the buffer and noise reduction effect, the solution of the present application can still maintain the fast and smooth opening characteristics of the check valve flap, thereby improving the response speed and compression efficiency of the exhaust process and having better comprehensive performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0022] Figure 1 The three-dimensional structure of the scroll plate assembly provided by the exemplary embodiment of this application is schematically shown Figure 1 ;

[0023] Figure 2 The three-dimensional view structure of the scroll plate assembly provided by the exemplary embodiment of this application is schematically shown Figure 2 ;

[0024] Figure 3 The cross-sectional view of the scroll plate assembly provided by the exemplary embodiment of this application when the check valve flap is in a floating state is schematically shown;

[0025] Figure 4 is Figure 3 the partial enlarged view within the circular area in

[0026] Figure 5 The cross-sectional view of the scroll plate assembly provided by the exemplary embodiment of this application when the check valve flap is in the state of closing the exhaust port is schematically shown;

[0027] Figure 6 The cross-sectional view of the scroll plate assembly provided by the exemplary embodiment of this application when the check valve flap and the stop baffle move together is schematically shown.

[0028] In the figure:

[0029] 100, scroll plate;

[0030] 110, exhaust port;

[0031] 120, scroll teeth;

[0032] 130, counterbore;

[0033] 200, check valve disc;

[0034] 300, elastic member;

[0035] 400, stop baffle;

[0036] 410, through hole;

[0037] 500, guide post;

[0038] 510, bulged part;

[0039] 520, threaded section;

[0040] 600, high-pressure chamber;

[0041] 700, compression chamber;

[0042] 800, backing plate;

[0043] 810, through hole;

[0044] 820, screw;

[0045] 900, buffer block. Detailed implementation manners

[0046] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0047] It should be noted that the terms "including" and "having" in the description and claims of this application and any variations thereof are intended to cover non-exclusive inclusion. For example, a system, product, or device including a series of units does not necessarily have to be limited to those units clearly listed, but may include those units not clearly listed or inherent to these products or devices.

[0048] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element, or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0049] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0050] In addition, the terms "arranged", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0052] An embodiment of the present application provides a stationary scroll assembly of a scroll compressor, the main structure of which includes a stationary scroll 100, a stop assembly, a check valve plate 200, and an elastic member 300. The stationary scroll 100 has an exhaust port 110 that penetrates through it. The stop assembly includes a stop plate 400 and a guide post 500 that are connected to each other. The stop plate 400 is located on the back side of the stationary scroll 100. The guide post 500 is slidably engaged with the stationary scroll 100 so that the stop plate 400 can reciprocate in a direction close to and away from the stationary scroll 100. The check valve plate 200 is slidably sleeved on the guide post 500 and is located between the stop plate 400 and the stationary scroll 100. The check valve plate 200 is movably disposed on the exhaust port 110. The elastic restoring force generated by the elastic member 300 has a tendency to move the stop plate 400 towards the stationary scroll 100, and as the stop plate 400 moves away from the stationary scroll 100, the elastic restoring force generated by the elastic member 300 gradually increases, thereby providing a gradually increasing buffer resistance.

[0053] The back surface of the stationary scroll 100 faces the high-pressure chamber 600, and its front surface is provided with a scroll tooth 120 structure, which cooperates with the moving scroll to form a compression chamber 700. An exhaust port 110 that penetrates through both the front and back sides of the stationary scroll 100 is provided on the stationary scroll 100 for guiding the high-pressure gas in the compression chamber 700 to the high-pressure chamber 600.

[0054] When the scroll compressor stops, the pressure in the high-pressure chamber 600 is higher than that in the compression chamber 700. Under the action of the pressure difference and its own gravity, the check valve plate 200 moves downward along the guide post 500 until it touches the stationary scroll 100 and then stops moving. The check valve plate 200 completely blocks the exhaust port 110 of the stationary scroll 100, and the air flow in the high-pressure chamber 600 cannot flow back into the compression chamber 700. On the one hand, it prevents the problem of repeated compression caused by backflow. On the other hand, it can reduce the reverse rotation of the compressor and improve the reliability and service life of the compressor.

[0055] When the scroll compressor exhausts, the compressed high-pressure gas in the compression chamber 700 is discharged through the exhaust port 110 of the stationary scroll 100. The high-pressure gas lifts the check valve plate 200, and the check valve plate 200 moves upward along the guide post 500 and gradually approaches and contacts the stop baffle 400. The stop baffle 400 is a part that restricts the movement stroke of the check valve plate 200. After the check valve plate 200 contacts the stop baffle 400, it transfers a part of its kinetic energy to the stop baffle 400. Then, the check valve plate 200 and the stop baffle 400 continue to move upward together. At this time, the guide post 500 also moves upward synchronously, and the elastic restoring force generated by the elastic member 300 gradually increases, reducing the speed of the check valve plate 200 and the stop baffle 400 until they stop. During this process, the elastic member 300 continuously deforms and generates a reverse elastic force, gradually absorbing the kinetic energy brought by the upward movement of the check valve plate 200 and reducing its speed until it finally stops smoothly.

[0056] Compared with the related technology in which the check valve plate 200 stops immediately and generates a large impact force when it touches the stop baffle 400 and other limiting structures, the structure of the present invention can endow the stop baffle 400 with a certain degree of movability, changing the rigid contact between the check valve plate 200 and the stop baffle 400 into a flexible contact, thereby effectively reducing the impact force of the check valve plate 200 on the stop baffle 400, effectively reducing the impact intensity and noise generated during the opening process of the check valve plate 200, extending the service life of the check valve plate 200 and the stop baffle 400, and improving the operation stability of the whole machine and the user experience.

[0057] In addition, in the related art, there is also an exhaust check structure that fixedly arranges a check baffle 400 and sets an elastic structure between the check baffle 400 and a check valve piece 200 to buffer the impact force generated by the high-speed impact of the check valve piece 200 on the check baffle 400. Although this structure reduces the impact noise and structural wear of the check valve piece 200 to a certain extent, it also introduces new problems: since the elastic structure itself generates a reaction force on the moving direction of the check valve piece 200, it forms a resistance to the opening action of the check valve piece 200. Especially when the compression chamber 700 just starts to exhaust and the air pressure is not yet sufficient to overcome the elastic resistance, it will cause a lag phenomenon in the opening of the check valve piece 200. This lag not only affects the timely discharge of the high-pressure gas in the compression chamber 700 and reduces the exhaust efficiency, but also may cause waste of compression work. In contrast, the technical solution provided in the present application designs the check baffle 400 as a structure that can move along with the direction of the check valve piece 200, and combines the synergistic effect of the elastic member 300 and the guide post 500, so that the check baffle 400 can generate a corresponding displacement after being impacted by the check valve piece 200, thereby playing a role of flexible buffering. And the elastic member 300 will not directly resist the initial upward movement of the check valve piece 200. Therefore, while achieving the effect of buffering and noise reduction, the solution of the present application can still maintain the fast and smooth opening characteristics of the check valve piece 200, thereby improving the response speed and compression efficiency of the exhaust process and having better comprehensive performance.

[0058] In some embodiments, a counterbore 130 is formed on the back surface of the stationary scroll 100. One end of the guide post 500 away from the stop plate 400 extends into the counterbore 130 and is slidably engaged with the counterbore 130. By providing the counterbore 130 on the stationary scroll 100, an embedded sliding fit area can be provided for the guide post 500, enabling the movement of the guide post 500 to have higher guiding accuracy and stability, and avoiding the skew or wobbling of the stop plate 400 during reciprocating motion. This structural combination enables the stop plate 400 to stably approach or move away from the stationary scroll 100 along the guiding direction under the action of the elastic member 300, forming a good limiting buffer during the opening and closing process of the check valve flap 200, helping to reduce the relative impact between the check valve flap 200 and the stop plate 400, and improving the reliability and service life of the overall structure. From another perspective, the counterbore 130 structure also makes the installation of the guide post 500 more compact, which is beneficial to the optimized layout of the rear space of the compressor. Specifically, by providing the counterbore 130 on the back surface of the stationary scroll 100, a part of the movement stroke of the guide post 500 can be located inside the stationary scroll 100, thereby effectively compressing the external installation space required by the guide post 500 on the back surface of the stationary scroll 100 without affecting the movement range of the stop plate 400. Compared with the structure where the guide post 500 is completely arranged in the back surface space of the stationary scroll 100, the counterbore 130 structure can achieve significant advantages in terms of structural compactness, and is particularly suitable for scroll compressor products with high requirements for volume and space layout.

[0059] This structural design not only optimizes the layout of components, but also reduces the occupation of external space while the stop component realizes its function, which helps to improve the integration of the entire compressor assembly and provides support for the miniaturization or modular design direction of the compressor.

[0060] In some embodiments, two guide posts 500 and two counterbores 130 are preferably provided, and the two guide posts 500 and the two counterbores 130 are symmetrically arranged with respect to the exhaust port 110. By adopting two guide posts 500, the guiding stability of the stop plate 400 and the check valve flap 200 during movement can be effectively improved, avoiding problems such as inclination and jamming caused by single-point guiding, and enabling the check valve flap 200 to always maintain a stable posture during movement along the guide post 500, which is beneficial to forming a good sealing fit between the check valve flap 200 and the exhaust port 110. Further, the double-guide post 500 structure can also improve the impact resistance and durability of the overall structure, ensuring that the check valve flap 200 maintains good operating effects during long-term repeated movements.

[0061] In some embodiments, a bulged portion 510 that is slidably mated with the counterbore 130 is formed at one end of the guide post 500 away from the stop plate 400. The elastic member 300 is located in the counterbore 130 and sleeved on the guide post 500. One end of the elastic member 300 is fixedly arranged relative to the stationary scroll 100, and the other end of the elastic member 300 abuts against the bulged portion 510. The outer diameter of the bulged portion 510 is larger than the outer diameter of the main body of the guide post 500, which can play a guiding and limiting role during the axial movement of the guide post 500 along the counterbore 130. One end of the elastic member 300 is fixedly arranged relative to the stationary scroll 100, and the other end abuts against the bulged portion 510, so that the elastic member 300 undergoes elastic deformation when the guide post 500 drives the bulged portion 510 to move axially.

[0062] In this structure, the bulged portion 510 serves as the force-receiving end face of the elastic member 300, which can enable the elastic member 300 to provide a stable elastic restoring force for the structural system formed by the stop plate 400 and the check valve piece 200, and at the same time prevent the elastic member 300 from axially moving during operation. Since the elastic member 300 is arranged inside the counterbore 130, it further saves the back space of the stationary scroll 100 inside the compressor, improves the structural compactness, and helps optimize the overall volume of the compressor and improve the assembly flexibility.

[0063] In some embodiments, the stationary scroll assembly further includes a backing plate 800 covering the back surface of the stationary scroll 100. The guide post 500 penetrates through the backing plate 800, and the elastic member 300 is arranged between the backing plate 800 and the bulged portion 510.

[0064] The guide post 500 penetrates through the backing plate 800, enabling the stop plate 400 to axially move outside the backing plate 800, while one end of the guide post 500 away from the stop plate 400 extends into the counterbore 130 of the stationary scroll 100 and is slidably mated with the counterbore 130. In this structure, the elastic member 300 is arranged between the backing plate 800 and the bulged portion 510 and sleeved on the guide post 500. One end of the elastic member 300 is fixedly mated with the backing plate 800, and the other end abuts against the bulged portion 510 on the guide post 500, so that it is compressed when the stop plate 400 is forced to move away from the stationary scroll 100, generating an elastic force for pushing the stop plate 400 and the check valve piece 200 to return. Since the elastic member 300 is in the enclosed space between the backing plate 800 and the bulged portion 510, it can effectively avoid the influence of external impurities, oil mist or high-temperature gas on the performance of the elastic member 300, improving the stability and durability of the system. By providing the backing plate 800, it not only helps to define the installation position of the stop assembly, enhance the support stability of the guide post 500, but also facilitates the installation and preloading adjustment of the elastic member 300, thereby improving the reliability and consistency of the overall assembly and further enhancing the working performance and service life of the check mechanism.

[0065] In some embodiments, a through hole 810 is provided on the backing plate 800 opposite to the exhaust port 110, and the orthographic projection of the through hole 810 on the back surface of the stationary scroll 100 completely covers the exhaust port 110. By providing the through hole 810 corresponding to the exhaust port 110 on the backing plate 800 and ensuring that the size of the through hole 810 is large enough to completely cover the exhaust port 110 in the direction perpendicular to the back surface of the stationary scroll 100, it is ensured that the high-pressure gas can pass through the exhaust port 110 unobstructed during the exhaust process of the compressor and smoothly flow through the backing plate 800. This structure not only avoids the blockage of the exhaust path by the backing plate 800 or the interference of the compressed air flow, helps to maintain the flexible opening and closing of the check valve flap 200 through the normal air flow, effectively guarantees the reliability and response speed of the check function, improves the overall exhaust efficiency, and reduces the air flow resistance.

[0066] Preferably, the orthographic projection of the check valve flap 200 on the back surface of the stationary scroll 100 can completely cover the orthographic projection of the through hole 810 on the backing plate 800 on the back surface of the stationary scroll 100. That is to say, from the perspective of the vertical projection of the check valve flap 200 onto the back surface of the stationary scroll 100, its projected area completely covers the projected area of the through hole 810 corresponding to the exhaust port 110 on the backing plate 800. This structural design has multiple technical effects: on the one hand, when the check valve flap 200 moves downward to close the exhaust port 110, it can ensure that it effectively covers the area of the through hole 810 on the backing plate 800, thereby realizing the reliable closure of the exhaust port 110, improving the airtightness and stability of the check seal, and preventing the high-pressure gas from flowing back into the compression chamber 700; on the other hand, the setting of the backing plate 800 enables the check valve flap 200 not to directly contact the metal surface of the stationary scroll 100 during the falling process, but uses the backing plate 800 as a buffer interface to effectively reduce the mechanical impact and noise caused by the check valve flap 200 hitting the stationary scroll 100, and further prevent the wear of the surface of the stationary scroll 100 or the check valve flap 200. In addition, this structure also has good maintainability. The backing plate 800 can be replaced separately after wear as an independent component, extending the service life of the stationary scroll assembly, reducing the maintenance cost, and improving the long-term stability and economy of the whole machine operation.

[0067] In some embodiments, the backing plate 800 is preferably fixed to the back surface of the stationary scroll 100 by screws 820. Preferably, two screws 820 are provided, and the connection line of the two screws 820 is perpendicular to the connection line of the two guide posts 500. The above-described setting has a simple structure and is convenient for installation. The backing plate 800 can be stably installed by two screws 820, which is convenient for later maintenance and replacement. The connection line direction of the two screws 820 is perpendicular to the connection line direction of the two guide posts 500, which can effectively avoid structural interference or uneven local stress caused by the fixing points and the guiding structure in the same direction, thereby improving the structural stability and vibration resistance of the entire assembly, and ensuring that the check mechanism can still operate stably for a long time under high-frequency start-stop conditions.

[0068] In some embodiments, a buffer block 900 is provided at the bottom of the counterbore 130. When the air pressure in the high-pressure chamber 600 on the back surface of the stationary scroll 100 is greater than the air pressure in the exhaust port 110 of the stationary scroll 100, the check valve disc 200 falls back towards the backing plate 800 under the action of the pressure difference and its own gravity, thereby driving the guide post 500 and the stop baffle 400 connected thereto to fall back as a whole. The enlarged portion 510 provided at the end of the guide post 500 away from the stop baffle 400 moves downward and finally contacts the buffer block 900 at the bottom of the counterbore 130. When the enlarged portion 510 contacts the buffer block 900, the downward movement of the guide post 500 and the stop baffle 400 stops. The buffer block 900 buffers and absorbs the falling kinetic energy of the guide post 500 through its material elasticity or structural deformation ability, thereby significantly reducing the direct hard collision between the enlarged portion 510 of the guide post 500 and the bottom surface of the counterbore 130, and reducing the noise and mechanical shock generated by the impact. Thereby, the mute performance of the compressor during operation and shutdown can be effectively improved, the overall noise control performance can be improved, and the use experience and market competitiveness of the product can be further enhanced.

[0069] The material of the buffer block 900 is preferably rubber, silica gel, polyurethane foam or other buffer materials with elasticity and high-temperature resistance to ensure its long-term stable operation in a high-temperature and high-pressure environment. The buffer block 900 can be set as an embedded structure, embedded in the limit groove at the bottom of the counterbore 130, or fixed and installed by bonding, buckling, etc., to ensure that it does not displace when contacted by the enlarged portion 510 of the guide post 500. In some preferred solutions, the buffer block 900 can be designed as a planar type, a concave type or a hollow structure according to the use requirements, so as to realize different buffer strokes and buffer stiffness adjustments. The buffer block 900 not only plays a role in reducing the falling impact force of the guide post 500 and reducing noise, but also can avoid hard contact wear between metal parts to a certain extent, and extend the overall service life of the stationary scroll assembly.

[0070] In some embodiments, a threaded section 520 is provided on the guide post 500, and the threaded section 520 is in screw fit with the stop baffle 400. By means of threaded connection, the stop baffle 400 can move axially along the guide post 500 and can be positioned and fixed as required. On the one hand, the detachable connection between the stop baffle 400 and the guide post 500 is realized, which is convenient for assembly, maintenance or replacement. On the other hand, the position of the stop baffle 400 on the guide post 500 is adjustable, so that the distance between the stop baffle 400 and the enlarged portion 510 provided at one end of the guide post 500 away from the stop baffle 400 can be flexibly adjusted according to the actual working conditions, thereby adjusting the movement range of the check valve flap 200 on the guide post 500, optimizing the opening stroke and the falling buffer distance of the check valve flap 200, helping to improve the response speed and buffer effect of the check process, and further enhancing the stability and adaptability of the compressor exhaust system.

[0071] In some embodiments, a through hole 410 is formed in the stop baffle 400 and is preferably provided at the center of the stop baffle 400. The provision of the through hole 410 helps to improve the air flow environment when the check valve flap 200 approaches the stop baffle 400 during high-speed movement. When the check valve flap 200 is pushed by the high-pressure gas discharged from the compression chamber 700 and moves rapidly towards the stop baffle 400, if the stop baffle 400 is an integral closed structure, the gas between the valve flap and the stop baffle 400 cannot be discharged quickly, resulting in a large air resistance, which in turn affects the movement smoothness of the valve flap. By providing the through hole 410 at the center of the stop baffle 400, the gas in this area can be effectively guided during the process of the check valve flap 200 approaching the stop baffle 400, reducing the gas resistance, avoiding the flutter or deviation of the check valve flap 200 due to poor air flow buffering, improving the reliability and smoothness of the check action, and also helping to reduce the movement noise and local air flow impact.

[0072] The present application also correspondingly protects a scroll compressor, which includes the stationary scroll assembly provided in the foregoing embodiments of the present application. Specifically, the main structure of the stationary scroll assembly includes a stationary scroll 100, a stop assembly, a check valve plate 200, and an elastic member 300. An exhaust port 110 is provided through the stationary scroll 100. The stop assembly includes a stop plate 400 and a guide post 500 connected to each other. The stop plate 400 is located on the back side of the stationary scroll 100. The guide post 500 is slidably engaged with the stationary scroll 100 so that the stop plate 400 can reciprocate in a direction close to and away from the stationary scroll 100. The check valve plate 200 is slidably sleeved on the guide post 500 and is located between the stop plate 400 and the stationary scroll 100. The check valve plate 200 is movably disposed to cover the exhaust port 110. The elastic restoring force generated by the elastic member 300 has a tendency to move the stop plate 400 toward the stationary scroll 100. As the stop plate 400 moves away from the stationary scroll 100, the elastic restoring force generated by the elastic member 300 gradually increases, thereby providing a gradually increasing buffer resistance. By integrating a check structure with a limiting and buffering function into the stationary scroll assembly, the scroll compressor can effectively prevent the reverse flow of gas inside the compressor during normal operation and start-stop processes, improve the smoothness of the exhaust process, and at the same time suppress the direct impact between the check valve plate 200 and the stop structure, reduce structural wear and noise, and is beneficial to improving the overall operation stability, service life, and user experience of the compressor.

[0073] The present application also correspondingly protects an air conditioner, which includes the scroll compressor provided in the foregoing embodiments of the present application. By using a scroll compressor with an improved check structure, the operation stability of the air conditioner under start-stop conditions can be effectively improved, performance fluctuations caused by compressor reverse rotation and air flow backflow can be avoided, noise can be reduced, and the service life of the compressor and its key components can be extended, thereby contributing to improving the overall reliability of the air conditioner and the user experience. Some embodiments in this specification are described in a progressive or parallel manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0074] The above are only the specific embodiments of the present application, which enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A stationary scroll assembly of a scroll compressor, characterized in that, Comprising: A stationary scroll plate, which has an exhaust port penetrating therethrough; A stop assembly, including a stop plate and a guide post connected to each other. The stop plate is located on the back side of the stationary scroll plate, and the guide post is slidably engaged with the stationary scroll plate so that the stop plate can reciprocate in a direction close to and away from the stationary scroll plate; A check valve plate, which is slidably sleeved on the guide post and is located between the stop plate and the stationary scroll plate, and the check valve plate is movably disposed to cover the exhaust port; An elastic member, the elastic restoring force generated by the elastic member has a tendency to move the stop plate towards the stationary scroll plate, and as the stop plate moves away from the stationary scroll plate, the elastic restoring force generated by the elastic member gradually increases.

2. The scroll plate assembly according to claim 1, wherein A counterbore is formed on the back surface of the stationary scroll plate, and one end of the guide post away from the stop plate extends into the counterbore and is slidably engaged with the counterbore.

3. The scroll plate assembly according to claim 2, wherein One end of the guide post away from the stop plate is formed with a bulged portion slidably engaged with the counterbore. The elastic member is located in the counterbore and sleeved on the guide post. One end of the elastic member is fixedly disposed relative to the stationary scroll plate, and the other end of the elastic member abuts against the bulged portion.

4. The scroll plate assembly according to claim 3, wherein, The stationary scroll plate assembly further includes a backing plate covering the back surface of the stationary scroll plate. The guide post penetrates through the backing plate, and the elastic member is disposed between the backing plate and the bulged portion.

5. The scroll plate assembly according to claim 4, wherein, A through hole is provided on the backing plate opposite to the exhaust port, and the orthographic projection of the through hole on the back surface of the stationary scroll plate completely covers the exhaust port.

6. The scroll plate assembly according to claim 4, wherein, A buffer block is provided at the bottom of the counterbore.

7. The scroll plate assembly according to claim 1, wherein A threaded section is provided on the guide post, and the threaded section is screwed and engaged with the stop plate.

8. The scroll plate assembly according to claim 1, characterized in that, A through hole penetrating therethrough is formed on the stop plate.

9. A scroll compressor, characterized in that, Comprising the stationary scroll plate assembly according to any one of claims 1-8.

10. An air conditioner, characterized in that, Comprising a scroll compressor as claimed in claim 9.

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