Static scroll plate for scroll air compressor and scroll air compressor

Abstract

The utility model belongs to the technical field of air compressors, and discloses a static scroll plate for a scroll air compressor and the scroll air compressor, the static scroll plate comprises a static plate body, static scroll teeth and an air suction port, an air outlet is formed in the center of the static plate body, the static scroll teeth are arranged on the static plate body and spirally extend outwards around the air outlet, and the air suction port is arranged on the static plate body. An air suction cavity and a compression cavity which are communicated with each other are formed between the static scroll teeth, a sealing groove is formed in the top end of each static scroll tooth, is used for placing a sealing strip and comprises a main body section and an arc-shaped transition section, the molded line pitch of the static scroll plate is P, and the curvature of the arc-shaped transition section is smaller than 1 / P. The air suction port is formed in the static plate body and is communicated with the air suction cavity. Therefore, the sealing strip can be in smooth transition at the arc-shaped transition section, the curvature of the sealing strip needing to be bent is reduced, it is guaranteed that the end face of the top of the sealing strip is a plane parallel to the end face of the top of the static scroll wrap, then the air tightness between the static scroll plate and the dynamic scroll plate is guaranteed, and the compression performance of the scroll air compressor is guaranteed.

Description

Technical Field

[0001] This application belongs to the technical field of air compressors, specifically relating to a static scroll plate for a scroll air compressor and a scroll air compressor. Background Technology

[0002] Scroll air compressors have advantages such as low noise, low vibration, and high efficiency, and are increasingly used in oil-free environmental air compression systems; currently, oil-free scroll air compressors are commonly used in the oxygen production field.

[0003] A scroll air compressor includes a scroll assembly and a drive assembly. The scroll assembly includes a stationary scroll and a moving scroll that cooperate with each other. The stationary scroll has an air intake port, which is generally located in the air intake chamber. The drive assembly is used to drive the moving scroll to rotate relative to the stationary scroll under the action of the drive assembly to generate pressurized air.

[0004] To improve the intake efficiency of scroll air compressors, some designs combine a straight section and an arc-shaped section at the tail end of the stationary scroll tooth, with the arc-shaped section located at both ends of the straight section. This increases the volume of the intake chamber, thereby reducing the intake resistance of the scroll air compressor and also helps to regulate the airflow, making it smoother and thus improving the intake efficiency. Furthermore, to ensure airtightness between the stationary and moving scrolls, a sealing groove is usually installed at the top of the stationary scroll tooth, and a sealing strip is installed in the groove to increase the airtightness between the two scrolls. However, because the two ends of the straight section are connected to the arc-shaped section, the curvature between the straight and arc-shaped sections is relatively large. This makes the inner side of the sealing strip easily deformed by compression and bulge upwards, affecting the contact area between the sealing strip and the moving scroll, thus affecting the airtightness between the stationary and moving scrolls. It also increases the difficulty of installing the sealing strip and affects the production efficiency of the scroll air compressor. Utility Model Content

[0005] This application provides a stationary scroll plate for a scroll air compressor to ensure airtightness between the stationary scroll plate and the moving scroll plate, reduce the difficulty of installing the sealing strip, and improve the production efficiency of the scroll air compressor.

[0006] The technical solution adopted in this application is as follows:

[0007] A stationary scroll plate for a scroll air compressor, comprising:

[0008] A stationary disc body, wherein an air outlet is provided at the center of the stationary disc body;

[0009] The stationary vortex teeth are disposed on the stationary disk body and extend outward in a spiral shape around the air outlet. The stationary vortex teeth form an interconnected air intake chamber and a compression chamber. A sealing groove is provided at the top of the stationary vortex teeth for placing a sealing strip. The sealing groove includes a main body section and an arc-shaped transition section. The profile pitch of the stationary vortex disk is P, and the curvature of the arc-shaped transition section is less than 1 / P.

[0010] An air intake is located on the stationary disc and communicates with the air intake chamber.

[0011] By adopting the above technical solution, since the sealing groove includes a main section and an arc-shaped transition section, and the curvature of the arc-shaped transition section is less than 1 / P, the sealing strip can smoothly transition at the arc-shaped transition section. This reduces the curvature required for bending the sealing strip, thus preventing the inner side of the sealing strip from bulging upwards due to a large bending curvature. This ensures that the top end face of the sealing strip is a plane parallel to the top end face of the stationary scroll tooth, thereby guaranteeing the airtightness between the stationary and moving scroll plates and ensuring the compression performance of the scroll air compressor. Furthermore, by reducing the bending curvature of the sealing strip, the phenomenon of easy detachment from the sealing groove due to a large bending curvature is avoided, thus reducing the difficulty of installing the sealing strip and greatly improving the production efficiency of the scroll air compressor.

[0012] Meanwhile, the arc-shaped transition section allows the shape of the static scroll teeth to be adapted to it, thereby increasing the volume at the intake port, which is beneficial for stable airflow and improving the intake efficiency of the scroll air compressor. In addition, a larger intake port can be designed to further reduce the intake resistance of the scroll air compressor, thereby further improving the compression performance of the scroll air compressor.

[0013] Optionally, the stationary volute can be connected to the moving volute via a crank, and the minimum distance between the outer side of the arc-shaped transition section and the contour formed by the outer edge of the crank during movement is L, where L satisfies: 0.5mm≤L≤2.5mm.

[0014] By adopting the above technical solution, if L is less than 0.5mm, it may cause interference between the crank and the stationary scroll gear, thus affecting the normal operation of the scroll air compressor. If L is greater than 2.5mm, the curvature of the arc transition section will be too small, thus increasing the length of the sealing strip and consequently increasing the production cost of the scroll air compressor. Setting L to be greater than or equal to 0.5mm and less than or equal to 2.5mm ensures the normal operation of the scroll air compressor while reducing its production cost.

[0015] Optionally, the stationary vortex tooth can mesh with the moving vortex tooth of the moving vortex disk. The moving vortex tooth and the stationary vortex tooth have an open state for air intake and a closed state for compression. When the moving vortex tooth and the stationary vortex tooth are in the closed state, the projection of the end of the moving vortex tooth on the stationary vortex disk does not overlap with the air intake port.

[0016] By adopting the above technical solution, since the projection of the end of the moving scroll tooth on the stationary scroll plate does not overlap with the air intake, the end of the moving scroll tooth can avoid the air intake, thus preventing the phenomenon that the end of the moving scroll tooth can block the air intake and affect the air intake efficiency of the scroll air compressor. This ensures the air intake efficiency of the scroll air compressor and guarantees its compression performance.

[0017] Optionally, the end of the static vortex gear near the air intake chamber has an end inner wall, the end inner wall being a curved surface with an opening facing the air intake chamber, and the air intake port being disposed near the end inner wall.

[0018] By adopting the above technical solution, since the inner wall of the end is a curved surface with the opening facing the intake chamber, and the intake port is set close to the inner wall of the end, on the one hand, the volume of the intake chamber is increased to reduce the intake resistance of the scroll air compressor, thereby improving the intake efficiency of the scroll air compressor and thus increasing the compression performance of the scroll air compressor. On the other hand, the inner wall of the end can guide the air entering the intake chamber so that the air entering the intake chamber flows along the spiral direction of the stationary scroll teeth, thereby improving the intake smoothness of the scroll air compressor, further reducing the intake resistance of the scroll air compressor, and thus further improving the intake efficiency of the scroll air compressor.

[0019] Optionally, the inner wall of the end is provided with a raised step.

[0020] By adopting the above technical solution, the raised steps on the inner wall of the end increase the volume of the air intake chamber and the structural strength of the stationary vortex tooth at the air intake, thereby increasing the service life of the stationary vortex disk and thus increasing the service life of the vortex air compressor.

[0021] Optionally, the air intake includes an inlet section and a deflection section that are interconnected. The opening of the inlet section is located on the bottom wall of the air intake chamber, and the opening of the deflection section is oriented parallel to the airflow direction in the air intake chamber, so that the airflow passes through the inlet section and the deflection section in sequence and then enters the air intake chamber along the tangential direction of the static vortex tooth.

[0022] By adopting the above technical solution, since the opening of the turning section is parallel to the airflow direction in the intake chamber, the airflow, after passing through the intake section and the turning section in sequence, can enter the intake chamber along the tangential direction of the stationary volute teeth. This smoothly transitions the airflow that enters the intake port axially from the stationary volute to enter the intake chamber along the tangential direction of the stationary volute teeth. This avoids the phenomenon that the airflow entering the intake chamber collides with the moving volute and then splits to enter the compression chamber tangentially, thereby reducing the kinetic energy loss of the airflow and allowing the airflow entering the intake chamber to flow quickly into the compression chamber. This further reduces the intake resistance of the scroll compressor and further improves the compression performance of the scroll air compressor. In addition, it also avoids the phenomenon that the stability of the moving volute is affected by the impact of the airflow on the moving volute.

[0023] Optionally, the steering section includes a first steering section and a second steering section that are interconnected. The first steering section is connected to the intake section, and the inner wall of the second steering section gradually slopes inward from the connection between the first steering section and the second steering section.

[0024] By adopting the above technical solution, since the inner wall of the second steering section is gradually inclined inward from the connection between the first steering section and the second steering section, the airflow can be smoothly converted into flow along the tangential direction of the static vortex teeth under the action of the inner wall of the second steering section, so as to further reduce the kinetic energy loss of the airflow, thereby further reducing the intake resistance of the vortex air compressor, and further improving the compression performance of the vortex air compressor.

[0025] Optionally, the steering segment includes a first steering segment and a second steering segment that are interconnected, the first steering segment being connected to the intake segment, and the second steering segment being a curved surface.

[0026] By adopting the above technical solution, since the second turning section is a curved surface, the kinetic energy loss of the airflow can be further reduced, thereby further reducing the intake resistance of the scroll air compressor and further improving the compression performance of the scroll air compressor.

[0027] Optionally, the end of the static vortex gear near the intake chamber has an end inner wall, and the opening of the steering section is located on the end inner wall.

[0028] By adopting the above technical solution, since the opening of the steering section is located on the inner wall of the end, the area of ​​the air intake is increased, thereby further reducing the air intake resistance of the scroll air compressor, thereby further increasing the air intake smoothness of the scroll air compressor, further improving the air intake efficiency of the scroll air compressor, and further improving the compression performance of the scroll air compressor.

[0029] This application also discloses a scroll air compressor to improve the compression performance of the scroll air compressor and increase its production efficiency.

[0030] A scroll air compressor includes a drive assembly, a scroll assembly, and an anti-rotation structure. The scroll assembly includes a stationary scroll and a moving scroll that cooperate with each other. The anti-rotation structure is used to connect the stationary scroll and the moving scroll. The drive assembly is used to drive the moving scroll to rotate. The stationary scroll is selected from the aforementioned stationary scrolls.

[0031] By adopting the above technical solution, since the scroll air compressor in this application uses the aforementioned stationary scroll plate, the intake resistance of the scroll air compressor is reduced, thereby improving the intake smoothness of the scroll air compressor. At the same time, the airtightness between the stationary scroll plate and the moving scroll plate is increased, thereby improving the compression efficiency of the scroll air compressor. Furthermore, the assembly difficulty of the sealing strip is reduced, the assembly efficiency of the sealing strip is improved, and thus the production efficiency of the scroll air compressor is improved.

[0032] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0033] 1. The stationary scroll plate in this application includes a stationary plate body, stationary scroll teeth, and an air intake port. An air outlet is located at the center of the stationary plate body. The stationary scroll teeth are located on the stationary plate body and extend outwards in a spiral shape around the air outlet. The stationary scroll teeth form interconnected air intake and compression chambers. A sealing groove is located at the top of the stationary scroll teeth, used to hold a sealing strip. The sealing groove includes a main body section and an arc-shaped transition section. The profile pitch of the stationary scroll plate is P, and the curvature of the arc-shaped transition section is less than 1 / P. The air intake port is located on the stationary plate body and communicates with the air intake chamber, allowing the sealing strip to smoothly transition at the arc-shaped transition section. This reduces the curvature required for bending the sealing strip, thus preventing the inner side of the sealing strip from bulging upwards due to a large bending curvature. This ensures that the top end face of the sealing strip is a plane parallel to the top end face of the stationary scroll teeth, thereby ensuring the airtightness between the stationary and moving scroll plates and guaranteeing the compression performance of the scroll air compressor. Furthermore, by reducing the bending curvature of the sealing strip, the phenomenon of the sealing strip easily detaching from the sealing groove due to its large bending curvature is avoided, thereby reducing the difficulty of installing the sealing strip and greatly improving the production efficiency of the scroll air compressor.

[0034] 2. In this application, the stationary scroll plate can be connected to the moving scroll plate via a crank. The minimum distance between the outer side of the arc-shaped transition section and the contour formed by the outer edge of the crank during movement is L, where L satisfies: 0.5mm ≤ L ≤ 2.5mm. If L is less than 0.5mm, it may cause interference between the crank and the stationary scroll teeth, thus affecting the normal operation of the scroll air compressor. If L is greater than 2.5mm, it will result in an excessively small curvature of the arc-shaped transition section, thereby increasing the length of the sealing strip and increasing the production cost of the scroll air compressor. Setting L to be greater than or equal to 0.5mm and less than or equal to 2.5mm ensures the normal operation of the scroll air compressor while reducing its production cost.

[0035] 3. The stationary scroll plate in this application can mesh with the moving scroll teeth of the moving scroll plate. The moving scroll teeth and the stationary scroll teeth have an open state for air intake and a closed state for compression. When the moving scroll teeth and the stationary scroll teeth are in the closed state, the projection of the end of the moving scroll teeth on the stationary scroll plate does not overlap with the air intake port. This allows the end of the moving scroll teeth to avoid obstructing the air intake port and affecting the air intake efficiency of the scroll air compressor. This ensures the air intake efficiency of the scroll air compressor and guarantees its compression performance. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0037] Figure 1 This is a schematic diagram of the static vortex disk according to one embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the static vortex disk from another perspective in one embodiment of this application. To facilitate the distinction between the main body section and the arc transition section, the dotted part in the diagram represents the arc transition section.

[0039] Figure 3 This is a schematic diagram of the static vortex disk described in another embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the static vortex disk from another perspective in another embodiment of this application. To facilitate the distinction between the main body section and the arc transition section, the dotted part in the diagram represents the arc transition section.

[0041] Figure 5 This is a schematic diagram of the cooperation structure between the stationary vortex disk and the moving vortex tooth described in this application, mainly showing the positional relationship between the moving vortex tooth and the air intake when the moving vortex tooth is in the first position;

[0042] Figure 6 This is a schematic diagram of the cooperation structure between the stationary vortex disk and the moving vortex tooth described in this application. It mainly shows the positional relationship between the moving vortex tooth and the air intake when the moving vortex tooth is in the second position. The dashed circle represents the outline formed by the outer edge when the crank is in motion.

[0043] Figure 7 This is a schematic diagram of the cooperation structure between the stationary vortex disk and the moving vortex tooth described in this application, mainly showing the positional relationship between the moving vortex tooth and the air intake when the moving vortex tooth is in the third position;

[0044] Figure 8 This is a schematic diagram of the static vortex disk described in another embodiment of this application;

[0045] Figure 9 This is a schematic diagram of the static vortex disk from another perspective in another embodiment of this application. To facilitate the distinction between the main body section and the arc transition section, the dotted part in the diagram represents the arc transition section.

[0046] Figure 10 This is a cross-sectional view of the stationary vortex disk according to another embodiment of this application, mainly showing the second steering section being inclined, wherein the dashed arrow indicates the direction of airflow.

[0047] Figure 11 This is a cross-sectional view of the stationary vortex disk described in another embodiment of this application, mainly showing that the second turning section is a curved surface, wherein the dashed arrow indicates the flow direction of the airflow.

[0048] Figure label:

[0049] 1. Stationary disc; 2. Stationary vortex gear; 21. Sealing groove; 211. Main body section; 212. Arc-shaped transition section; 22. Intake chamber; 23. Compression chamber; 24. End inner wall; 241. Raised step; 3. Intake port; 31. Intake section; 32. Steering section; 321. First steering section; 322. Second steering section; 4. Crank; 5. Moving vortex gear. Detailed Implementation

[0050] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0052] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0055] Reference Figures 1 to 11 A static scroll plate for a scroll air compressor is disclosed, comprising a static scroll body 1, static scroll teeth 2, and an intake port 3. The static scroll body 1 has an outlet at its center. The static scroll teeth 2 are disposed on the static scroll body 1 and extend outward in a spiral shape around the outlet. An intake chamber 22 and a compression chamber 23 are formed between the static scroll teeth 2. A sealing groove 21 is provided at the top of the static scroll teeth 2 for placing a sealing strip. The sealing groove 21 includes a main body section 211 and an arc-shaped transition section 212. The profile pitch of the static scroll plate is P, and the curvature of the arc-shaped transition section 212 is less than 1 / P. The intake port 3 is disposed on the static scroll body 1 and communicates with the intake chamber 22.

[0056] It should be noted that the top of the static vortex tooth 2 mentioned above refers to the end face of the static vortex tooth 2 away from the static disk body 1.

[0057] It is understood that the static vortex tooth 2 includes a vortex body and a vortex tail section. The vortex body has an inner starting end and an outer ending end. The vortex tail section is connected to the outer ending end. The main body section 211 is located on the vortex body and extends spirally along the spiral extension direction of the vortex body. The arc-shaped transition section 212 is located on the vortex tail section. The arc-shaped transition section 212 is tangent to the main body section 211.

[0058] Since the sealing groove 21 includes a main body section 211 and an arc-shaped transition section 212, and the curvature of the arc-shaped transition section 212 is less than 1 / P, the sealing strip can smoothly transition at the arc-shaped transition section 212, thereby reducing the curvature required to bend the sealing strip. This avoids the phenomenon that the inner side of the sealing strip protrudes upward due to the large bending curvature, ensuring that the top end face of the sealing strip is a plane parallel to the top end face of the stationary scroll tooth 2, thus ensuring the airtightness between the stationary scroll and the moving scroll, and ensuring the compression performance of the scroll air compressor.

[0059] Furthermore, by reducing the bending curvature of the sealing strip, the phenomenon that the sealing strip is prone to detaching from the sealing groove 21 due to its large bending curvature is avoided, thereby reducing the difficulty of installing the sealing strip and greatly improving the production efficiency of the scroll air compressor.

[0060] Meanwhile, the arc-shaped transition section 212 allows the shape of the stationary scroll tooth 2 to be adapted to it, thereby increasing the volume at the intake port 3, which is beneficial for stable airflow and improving the intake efficiency of the scroll air compressor. In addition, a larger intake port 3 can be designed to further reduce the intake resistance of the scroll air compressor, thereby further improving the compression performance of the scroll air compressor.

[0061] It should be noted that scroll air compressors include compressors with fixed profile pitch and compressors with variable profile pitch. For compressors with variable profile pitch, the profile pitch P of the stationary scroll in this embodiment refers to the profile pitch at the air inlet of the compression chamber.

[0062] In a preferred embodiment, refer to Figure 6 The stationary volute can be connected to the moving volute via crank 4. The minimum distance between the outer side of the arc transition section 212 and the contour formed by the outer edge of the crank 4 during movement is L, and L satisfies: 0.5mm≤L≤2.5mm.

[0063] Multiple tests revealed that if L is less than 0.5mm, it may cause interference between the crank 4 and the stationary scroll gear 2, thus affecting the normal operation of the scroll air compressor. If L is greater than 2.5mm, the curvature of the arc transition section 212 will be too small, increasing the length of the sealing strip and consequently increasing the production cost of the scroll air compressor. Setting L to be greater than or equal to 0.5mm and less than or equal to 2.5mm ensures the normal operation of the scroll air compressor while reducing its production cost.

[0064] In a preferred embodiment, refer to Figure 5 , Figure 6 and Figure 7 The stationary scroll tooth 2 can mesh with the moving scroll tooth 5 of the moving scroll. The moving scroll tooth 5 and the stationary scroll tooth 2 have an open state for air intake and a closed state for compression. When the moving scroll tooth 5 and the stationary scroll tooth 2 are in the closed state, the projection of the end of the moving scroll tooth 5 on the stationary scroll does not overlap with the air intake port 3. This allows the end of the moving scroll tooth 5 to avoid obstructing the air intake port 3, thus preventing the phenomenon that the end of the moving scroll tooth 5 will block the air intake port 3 and affect the intake efficiency and compression efficiency of the scroll air compressor. This ensures the intake efficiency and compression efficiency of the scroll air compressor and guarantees its compression performance.

[0065] Furthermore, refer to Figure 1 and Figure 3 The stationary scroll tooth 2 has an end inner wall 24 near the intake chamber 22. The end inner wall 24 is a curved surface with its opening facing the intake chamber 22. The intake port 3 is located near the end inner wall 24. On the one hand, this increases the volume of the intake chamber 22 to reduce the intake resistance of the scroll air compressor, thereby improving the intake efficiency of the scroll air compressor and thus increasing the compression performance of the scroll air compressor. On the other hand, the end inner wall 24 can guide the air entering the intake chamber 22 so that the air entering the intake chamber 22 flows along the spiral direction of the stationary scroll tooth 2, thereby improving the intake smoothness of the scroll air compressor, further reducing the intake resistance of the scroll air compressor, and further improving the intake efficiency of the scroll air compressor. At the same time, the curved surface design makes it easier to process.

[0066] It should be noted that the aforementioned inner wall 24 at the end is a curved surface with an opening facing the air intake chamber 22, which means that the inner wall 24 at the end is convex in the direction away from the air intake chamber 22. In other words, the inner wall 24 at the end is a curved surface that convexes in the direction away from the air intake chamber 22.

[0067] Furthermore, refer to Figure 3The inner wall 24 at the end is provided with a raised step 241, which increases the volume of the air intake chamber 22 and the structural strength of the stationary vortex tooth 2 at the air intake port 3, thereby increasing the service life of the stationary vortex disk and thus increasing the service life of the vortex air compressor.

[0068] In a preferred embodiment, refer to Figure 10 and Figure 11 The air intake 3 includes an air intake section 31 and a turning section 32 that are connected to each other. The opening of the air intake section 31 is located on the bottom wall of the air intake chamber 22, and the opening of the turning section 32 is parallel to the airflow direction in the air intake chamber 22, so that the airflow passes through the air intake section 31 and the turning section 32 in sequence and then enters the air intake chamber 22 along the tangential direction of the static vortex tooth 2.

[0069] It should be noted that the opening of the intake section 31 refers to the air outlet of the intake section 31, the opening of the steering section 32 refers to the air outlet of the steering section 32, and the bottom wall of the intake chamber 22 refers to the wall surface of the intake chamber 22 away from the top of the static vortex gear 2.

[0070] Since the opening of the deflection section 32 faces the airflow direction parallel to the airflow direction in the intake chamber 22, the airflow, after passing through the intake section 31 and the deflection section 32 in sequence, can enter the intake chamber 22 along the tangential direction of the stationary scroll tooth 2. This smoothly transitions the airflow that enters the intake port 3 axially from the stationary scroll to enter the intake chamber 22 along the tangential direction of the stationary scroll tooth 2, thereby avoiding the phenomenon that the airflow entering the intake chamber 22 collides with the moving scroll and then splits to enter the compression chamber 23 tangentially. This reduces the kinetic energy loss of the airflow and allows the airflow entering the intake chamber 22 to flow quickly into the compression chamber 23, further reducing the intake resistance of the scroll compressor and thus further improving the compression performance of the scroll air compressor. In addition, it also avoids the phenomenon that the stability of the moving scroll is affected by the impact of the airflow on the moving scroll.

[0071] This application does not impose specific limitations on the structure of the turning section 32, which can adopt any of the following embodiments:

[0072] Example 1, in this example, refers to Figure 10 The steering section 32 includes a first steering section 321 and a second steering section 322 that are interconnected. The first steering section 321 is connected to the intake section 31. The inner wall of the second steering section 322 gradually slopes inward from the connection between the first steering section 321 and the second steering section 322, so that the airflow can be smoothly converted to flow in the tangential direction along the static vortex tooth 2 under the action of the inner wall of the second steering section 322, so as to further reduce the kinetic energy loss of the airflow, thereby further reducing the intake resistance of the vortex air compressor, and further improving the compression performance of the vortex air compressor.

[0073] It should be noted that the inner wall of the second steering section 322 gradually slopes inward from the connection between the first steering section 321 and the second steering section 322, which means that the inner wall of the second steering section 322 is inclined towards the side where the air intake chamber 22 is located from the connection between the first steering section 321 and the second steering section 322.

[0074] Example 2, in this example, refer to Figure 11 The steering section 32 includes a first steering section 321 and a second steering section 322 that are interconnected. The first steering section 321 is connected to the intake section 31, and the second steering section 322 is a curved surface, which can further reduce the kinetic energy loss of the airflow, thereby further reducing the intake resistance of the scroll air compressor and further improving the compression performance of the scroll air compressor.

[0075] Specifically, the surface of the second steering section 322 is a surface that protrudes in the direction away from the opening of the intake section 31.

[0076] In a preferred embodiment, the end of the stationary scroll tooth 2 near the intake chamber 22 has an end inner wall 24, and the opening of the turning section 32 is located on the end inner wall 24, thereby increasing the area of ​​the intake port 3, further reducing the intake resistance of the scroll air compressor, thereby further increasing the intake smoothness of the scroll air compressor, further improving the intake efficiency of the scroll air compressor, and further improving the compression performance of the scroll air compressor.

[0077] This application also discloses a scroll air compressor, which includes a drive assembly, a scroll assembly, and an anti-rotation structure. The scroll assembly includes a stationary scroll and a moving scroll that cooperate with each other. The anti-rotation structure is used to connect the stationary scroll and the moving scroll. The drive assembly is used to drive the moving scroll to rotate. The stationary scroll is selected from the aforementioned stationary scroll.

[0078] Because the scroll air compressor in this application uses the aforementioned stationary scroll plate, the intake resistance of the scroll air compressor is reduced, thereby improving the intake smoothness of the scroll air compressor. At the same time, the airtightness between the stationary scroll plate and the moving scroll plate is increased, thereby improving the compression efficiency of the scroll air compressor. Furthermore, the assembly difficulty of the sealing strip is reduced, the assembly efficiency of the sealing strip is improved, and thus the production efficiency of the scroll air compressor is improved.

[0079] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0080] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0081] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A stationary scroll plate for a scroll air compressor, characterized in that, include: A stationary disc body, wherein an air outlet is provided at the center of the stationary disc body; The stationary vortex teeth are disposed on the stationary disk body and extend outward in a spiral shape around the air outlet. The stationary vortex teeth form an interconnected air intake chamber and a compression chamber. A sealing groove is provided at the top of the stationary vortex teeth for placing a sealing strip. The sealing groove includes a main body section and an arc-shaped transition section. The profile pitch of the stationary vortex disk is P, and the curvature of the arc-shaped transition section is less than 1 / P. An air intake is located on the stationary disc and communicates with the air intake chamber.

2. The stationary scroll plate for a scroll air compressor according to claim 1, characterized in that, The stationary volute can be connected to the moving volute via a crank. The minimum distance between the outer side of the arc-shaped transition section and the contour formed by the outer edge of the crank during movement is L, where L satisfies: 0.5mm≤L≤2.5mm.

3. A stationary scroll plate for a scroll air compressor according to claim 1 or 2, characterized in that, The stationary vortex tooth can mesh with the moving vortex tooth of the moving vortex disk. The moving vortex tooth and the stationary vortex tooth have an open state for air intake and a closed state for compression. When the moving vortex tooth and the stationary vortex tooth are in the closed state, the projection of the end of the moving vortex tooth on the stationary vortex disk does not overlap with the air intake port.

4. The stationary scroll plate for a scroll air compressor according to claim 3, characterized in that, The end of the static vortex gear near the air intake chamber has an end inner wall, which is a curved surface with an opening facing the air intake chamber, and the air intake port is located near the end inner wall.

5. A stationary scroll plate for a scroll air compressor according to claim 4, characterized in that, The inner wall of the end is provided with a raised step.

6. A stationary scroll plate for a scroll air compressor according to claim 1 or 2, characterized in that, The air intake includes an inlet section and a deflection section that are interconnected. The opening of the inlet section is located on the bottom wall of the air intake chamber, and the opening of the deflection section is oriented parallel to the airflow direction in the air intake chamber, so that the airflow passes through the inlet section and the deflection section in sequence and then enters the air intake chamber along the tangential direction of the static vortex tooth.

7. A stationary scroll plate for a scroll air compressor according to claim 6, characterized in that, The steering section includes a first steering section and a second steering section that are interconnected. The first steering section is connected to the air intake section, and the inner wall of the second steering section gradually slopes inward from the connection between the first steering section and the second steering section.

8. A stationary scroll plate for a scroll air compressor according to claim 6, characterized in that, The steering section includes a first steering section and a second steering section that are interconnected. The first steering section is connected to the air intake section, and the second steering section is a curved surface.

9. A stationary scroll plate for a scroll air compressor according to claim 6, characterized in that, The end of the static vortex gear near the intake chamber has an end inner wall, and the opening of the turning section is located on the end inner wall.

10. A scroll air compressor, characterized in that, The device includes a drive assembly, a vortex assembly, and an anti-rotation structure. The vortex assembly includes a stationary vortex disk and a moving vortex disk that cooperate with each other. The anti-rotation structure is used to connect the stationary vortex disk and the moving vortex disk. The drive assembly is used to drive the moving vortex disk to rotate. The stationary vortex disk is selected from the stationary vortex disks described in any one of claims 1-9.

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