Scroll compressor and method for modifying scroll wrap profile

Abstract

The present application relates to scroll compressor technical field, specifically disclose a kind of scroll compressor and scroll tooth profile correction method.The scroll compressor includes: in static scroll and dynamic scroll compression process end, the first outer arc segment and the inner wall of dynamic scroll form first gap in the preset angle range of static scroll and dynamic scroll rotation, second outer arc segment and the inner wall of static scroll form second gap;In the process that static scroll and dynamic scroll exhaust, the third gap between first center head section and second inner arc segment, fourth gap between second center head section and first inner arc segment is formed.The scroll compressor in a certain angle range before gas compression end, the meshing gap of dynamic, static scroll starts from zero and increases, while reducing vibration noise, improve energy efficiency ratio, can solve the problem of tooth head correction arc starting position meshing interference, prolong the service life of the scroll compressor.

Description

Technical Field

[0001] This invention relates to the field of scroll compressor technology, and more particularly to a scroll compressor and a method for correcting the scroll tooth profile. Background Technology

[0002] Due to the influence of the refrigeration system matched with the compressor, the application scenario, and the ambient temperature, the compressor's suction and discharge pressure ratio will fluctuate within a large range. However, the design pressure ratio of a scroll compressor is fixed. When the actual working compression ratio is greater than or less than the design compression ratio, the pressure difference between the compression chamber and the discharge chamber at the moment when the gas compression ends and the chamber connects will cause the discharge chamber pressure to fluctuate, increasing the compressor's vibration noise and energy consumption.

[0003] Chinese patent CN201910382927.9 discloses a scroll-shaped tooth head structure for a scroll compressor and its correction method. This method involves rounding the tooth head, gradually increasing the meshing clearance from zero starting at the beginning of the rounded arc. This ensures that the pressures in the compression and exhaust chambers are similar or identical when they are connected, reducing mechanical noise caused by sudden pressure changes. However, in practical applications, the area near the beginning of the rounded arc is a high-temperature, high-pressure region. Zero meshing clearance causes slight interference between the tooth head and the meshing point near the beginning of the rounded arc, leading to tooth wear and affecting the service life of the scroll compressor.

[0004] Therefore, there is an urgent need to propose a method for correcting the scroll compressor and the scroll tooth profile to solve the above problems. Summary of the Invention

[0005] According to one aspect of the present invention, a scroll compressor is provided in which the meshing clearance between the moving and stationary scrolls increases from zero within a certain angle range before the gas compression ends. This reduces vibration and noise, improves energy efficiency ratio, solves the problem of meshing interference at the starting position of the tooth head correction arc, and extends the service life of the scroll compressor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A scroll compressor includes a moving scroll and a stationary scroll with the same structure and scroll tooth profile. The stationary scroll and the moving scroll are arranged facing each other. The scroll tooth profile of the stationary scroll includes a first outer arc segment, a first central head segment, a first straight line segment, and a first inner arc segment. The first outer arc segment, the first central head segment, the first straight line segment, and the first inner arc segment are all close to the tooth head of the stationary scroll. The scroll tooth profile of the moving scroll includes a second outer arc segment, a second central head segment, a second straight line segment, and a second inner arc segment. The second outer arc segment, the second central head segment, the second straight line segment, and the second inner arc segment are all close to the tooth head of the moving scroll.

[0008] Before the compression process of the stationary volute and the moving volute ends, within the preset angle range of rotation of the stationary volute and the moving volute, a first gap is formed between the first outer arc segment and the inner wall of the moving volute, and a second gap is formed between the second outer arc segment and the inner wall of the stationary volute.

[0009] During the exhaust process of the stationary vortex disk and the moving vortex disk, a third gap is formed between the first central head section and the second inner arc section, and a fourth gap is formed between the second central head section and the first inner arc section.

[0010] Optionally, the preset angle is greater than 0° and less than or equal to 85°.

[0011] Optionally, the first gap and the second gap gradually increase from zero during the compression process between the stationary volute and the moving volute;

[0012] The third and fourth gaps gradually increase in size from the first gap during the exhaust process of the stationary and moving vortex disks.

[0013] Optionally, the first gap and the second gap gradually increase from 0 mm to 0.18 mm during the compression process between the stationary volute and the moving volute.

[0014] The third and fourth gaps gradually increase from 0.18 mm to 0.25 mm during the exhaust process of the stationary and moving volute discs.

[0015] Optionally, the size of the first gap is equal to the size of the second gap, and the size of the third gap is equal to the size of the fourth gap.

[0016] According to another aspect of the present invention, the present invention also provides a method for correcting the scroll tooth profile, which is used to correct the stationary scroll and the moving scroll of the scroll compressor described in any of the above technical solutions. The method for correcting the scroll tooth profile includes the following steps:

[0017] S100. Draw the outline of the moving scroll plate according to the equation of the scroll tooth profile. The equation of the scroll tooth profile of the moving scroll plate is:

[0018] Inner wall surface (220) equation:

[0019] X=Rb*(cos(θ-β)+θ*sin(θ-β));

[0020] Y=Rb*(sin(θ-β)-θ*cos(θ-β));

[0021] Equation of outer wall surface:

[0022] X=Rb*(cos(θ+β)+θ*sin(θ+β));

[0023] Y=Rb*(sin(θ+β)-θ*cos(θ+β));

[0024] Where Rb is the base circle radius, β is the starting angle of the outer wall profile, and θ is the development angle of the vortex tooth profile;

[0025] S200. On the base circle, take the starting point K of the center line of the profile of the outer wall surface and the profile of the inner wall surface of the moving scroll, and connect the line segment OK.

[0026] S300. Draw a tangent AB to the base circle, intersecting the base circle at point B and the profile of the inner wall of the moving vortex at point A. The expansion angle of the tangent AB relative to the line segment OK is Φ1.

[0027] S400. Draw the tangent CD of the base circle and intersect the base circle at point C. It also intersects the profile of the outer wall of the moving vortex at point D. The expansion angle of the tangent CD relative to the line segment OK is Φ2, Φ1-Φ2=180°. Take point D1 on the tangent CD.

[0028] S500. Take points O1 and O2 on the tangent AB and the tangent CD1 respectively. Draw circles with O1 and O2 as centers and O1A and O2D1 as radii respectively, and draw the common tangent of the two circles. The common tangent intersects the profile of the inner wall surface of the moving scroll at points F1 and E1 respectively. The straight line E1F1 is the second straight line segment, the arc AF1 is the second inner circle arc segment, and the arc D1E1 is the second center head segment. Wherein, O1A-O2D1=R+ΔL, and R is the rotation radius of the moving scroll.

[0029] S600. Draw the tangent GH of the base circle and intersect the base circle at point G. It also intersects the profile of the outer wall of the moving vortex at point H. The expansion angle of the tangent GH relative to the line segment OK is Φ2+γ, where γ is a preset angle.

[0030] S700. Take point O3 on the tangent GH, draw a circle with O3 as the center and O3H as the radius, and make the circle pass through point D1. The arc HD1 is the second outer circle arc segment.

[0031] Alternatively, the method for obtaining point O3 is as follows:

[0032] Connect line segment HD1, and draw the perpendicular bisector of line segment HD1. The intersection of the perpendicular bisector and the tangent GH is point O3.

[0033] Optionally, the method for correcting the volute tooth profile of the stationary volute is the same as the method for correcting the volute tooth profile of the moving volute.

[0034] Optionally, the length of DD1 is greater than 0 mm and less than or equal to 0.1 mm.

[0035] Optionally, the length of ΔL is greater than 0 mm and less than or equal to 0.015 mm.

[0036] The beneficial effects of this invention are as follows:

[0037] This invention provides a scroll compressor, comprising a moving scroll and a stationary scroll having the same structure and scroll tooth profile. Before the compression process of the stationary and moving scrolls ends, within a preset angle range of rotation of the stationary and moving scrolls, a first gap is formed between a first outer arc segment and the inner wall of the moving scroll, and a second gap is formed between a second outer arc segment and the inner wall of the stationary scroll. The setting of the first and second gaps can avoid meshing interference caused by the thermal expansion of the scroll tooth heads, and can balance the pressure difference between the compression chamber and the exhaust chamber before the end of the compression process, reducing the pressure fluctuation amplitude in the exhaust chamber, thereby reducing the vibration noise and energy consumption of the scroll compressor.

[0038] During the exhaust process of the stationary and moving scroll plates, a third gap is formed between the first central head section and the second inner arc section, and a fourth gap is formed between the second central head section and the first inner arc section. The setting of the third and fourth gaps can create internal leakage during the exhaust process of the stationary and moving scroll plates, which can balance the pressure in the exhaust chamber and the compression chamber, making the exhaust process more stable, reducing mechanical noise caused by pressure changes, and improving the energy efficiency ratio.

[0039] The present invention also provides a method for correcting the tooth profile of a scroll compressor. This method can be used to obtain the moving scroll and stationary scroll of the scroll compressor. The method is easy to implement and has high practicality. Attached Figure Description

[0040] Figure 1 This is a tooth profile diagram of the moving scroll plate provided in an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of the structure of the moving scroll and stationary scroll before the end of the compression process provided in this embodiment of the invention. Figure 1 ;

[0042] Figure 3 A schematic diagram of the structure of the moving scroll and stationary scroll before the end of the compression process provided in this embodiment of the invention. Figure 2 ;

[0043] Figure 4 This is a schematic diagram of the structure of the moving scroll and the stationary scroll at the start of exhaust according to an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of the structure of the moving scroll and the stationary scroll at the end of the exhaust process, provided in an embodiment of the present invention.

[0045] Figure 6 The correction curve AF1E1D1H obtained by correcting the vortex tooth profile of the moving vortex disk using the correction method of vortex tooth profile provided in the embodiment of the present invention.

[0046] In the picture:

[0047] 1. Base circle;

[0048] 11. Compression chamber; 12. Exhaust chamber;

[0049] 100, stationary scroll; 200, moving scroll; 210, outer wall surface; 220, inner wall surface; 230, center line. Detailed Implementation

[0050] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0054] Example 1

[0055] like Figures 1-5 As shown, this embodiment provides a scroll compressor. Within a certain angle range before the gas compression ends, the meshing clearance between the moving scroll 200 and the stationary scroll 100 increases from zero. This reduces vibration and noise, improves energy efficiency, solves the problem of meshing interference at the starting position of the tooth head correction arc, and extends the service life of the scroll compressor.

[0056] Specifically, the scroll compressor includes a moving scroll 200 and a stationary scroll 100. The moving scroll 200 and the stationary scroll 100 have the same structure and scroll tooth profile, and the moving scroll 200 and the stationary scroll 100 are arranged facing each other.

[0057] The vortex tooth profile of the stationary vortex disk 100 includes a first outer circular arc segment, a first central head segment, a first straight line segment, and a first inner circular arc segment. All three segments are located close to the tooth head of the stationary vortex disk 100. The vortex tooth profile of the moving vortex disk 200 includes a second outer circular arc segment, a second central head segment, a second straight line segment, and a second inner circular arc segment. All three segments are located close to the tooth head of the moving vortex disk 200.

[0058] Figure 1 The image shows the tooth profile of the moving scroll 200. It is worth noting that... Figure 1 In the diagram, arc HD1 is the second outer circular arc segment, arc D1E1 is the second central head segment, straight line E1F1 is the second straight line segment, and arc AF1 is the second inner circular arc segment. Since the moving scroll 200 and the stationary scroll 100 have the same structure and scroll tooth profile, the structure of the stationary scroll 100 will not be described in detail.

[0059] See also Figure 2 and Figure 3 Before the compression process of the stationary scroll 100 and the moving scroll 200 ends, within a preset angle range of rotation of the stationary scroll 100 and the moving scroll 200, a first gap L1 is formed between the first outer arc segment and the inner wall of the moving scroll 200, and a second gap is formed between the second outer arc segment and the inner wall of the stationary scroll 100. By setting the first gap L1 and the second gap, even if the scroll tooth head of the stationary scroll 100 or the scroll tooth head of the moving scroll 200 expands due to heat when the compression process is about to end, interference between the moving scroll 200 and the stationary scroll 100 will not occur, reducing the risk of wear on the scroll tooth head and thus extending the service life of the stationary scroll 100 and the moving scroll 200.

[0060] During the exhaust process of the stationary scroll 100 and the moving scroll 200, a third gap L2 is formed between the first central head section and the second inner arc section, and a fourth gap is formed between the second central head section and the first inner arc section. By setting the third and fourth gaps, internal leakage can be formed when the stationary scroll 100 and the moving scroll 200 exhaust, which can balance the pressure of the exhaust chamber 12 and the compression chamber 11, making the exhaust process more stable, reducing mechanical noise caused by pressure changes, and improving the energy efficiency ratio.

[0061] It is worth noting that the preset angle refers to the counterclockwise translational rotation angle of the moving volute 200. The size of this angle is generally related to the size of the deformation area near the head of the volute tooth; the larger the deformation area, the larger the preset angle. In this embodiment, the preset angle is greater than 0° and less than or equal to 85°. For example, it can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, or 85°, etc.

[0062] Furthermore, in this embodiment, the first gap L1 and the second gap gradually increase from zero during the compression process of the stationary scroll plate 100 and the moving scroll plate 200. Figure 2 During the compression process, the meshing clearance between the stationary scroll 100 and the moving scroll 200 is zero. From this point onward, as the moving scroll 200 and the stationary scroll 100 rotate, the first clearance L1 and the second clearance gradually increase until the compression process ends. Figure 4 This refers to the positions of the moving scroll 200 and the stationary scroll 100 when the compression process ends and the exhaust begins.

[0063] In this embodiment, the moving vortex disk 200 is composed of Figure 2 The position in the middle moves to Figure 3 The position in the middle was rotated 30°, and the moving vortex 200 was... Figure 3 The position in the middle moves to Figure 4 The position in the middle has been rotated 55°.

[0064] In this embodiment, since the structures of the moving scroll 200 and the stationary scroll 100 are exactly the same, the dimensions of the first gap L1 and the second gap are always equal.

[0065] Specifically, in this embodiment, the first gap L1 and the second gap gradually increase from 0 mm to 0.18 mm during the compression process between the stationary scroll plate 100 and the moving scroll plate 200. Of course, in other embodiments, the values ​​of the first gap L1 and the second gap can also be set to other values, depending on actual needs.

[0066] In this embodiment, the positions of the moving scroll plate 200 and the stationary scroll plate 100 are as follows: Figure 3 As shown, the first gap L1 and the second gap are 0.1 mm; the positions of the moving scroll 200 and the stationary scroll 100 are as follows. Figure 4 As shown, the first gap L1 and the second gap are 0.18mm, and at this time the first gap L1 is equal to the third gap L2.

[0067] Furthermore, in this embodiment, the third gap L2 and the fourth gap gradually increase in size from the first gap during the exhaust process of the stationary volute 100 and the moving volute 200. Figure 3 In the middle stage, the size of the third gap L2 is equal to that of the first gap L1. From this point onwards, as the moving scroll 200 and the stationary scroll 100 rotate, the third gap L2 and the fourth gap gradually increase until the exhaust process ends. Figure 5 This refers to the positions of the moving scroll 200 and the stationary scroll 100 at the end of the exhaust process.

[0068] In this embodiment, since the structures of the moving scroll 200 and the stationary scroll 100 are exactly the same, the dimensions of the third gap L2 and the fourth gap are always equal.

[0069] Specifically, in this embodiment, the third gap L2 and the fourth gap gradually increase from 0.18 mm to 0.25 mm during the compression process of the stationary scroll plate 100 and the moving scroll plate 200. Of course, in other embodiments, the values ​​of the third gap L2 and the fourth gap can also be set to other values, depending on actual needs.

[0070] In this embodiment, the positions of the moving scroll plate 200 and the stationary scroll plate 100 are as follows: Figure 5 As shown, the third gap L2 and the fourth gap are 0.25mm.

[0071] Example 2

[0072] This embodiment provides a method for correcting the tooth profile of a scroll compressor. This method is used to correct the stationary scroll 100 and the moving scroll 200 of the scroll compressor described in Embodiment 1.

[0073] Specifically, such as Figure 6 As shown, the method for correcting the vortex tooth profile includes the following steps:

[0074] S100. Draw the outline of the moving scroll 200 based on the equation of the scroll tooth profile. The equation of the scroll tooth profile of the moving scroll 200 is:

[0075] Inner wall surface 220 equation:

[0076] X=Rb*(cos(θ-β)+θ*sin(θ-β));

[0077] Y=Rb*(sin(θ-β)-θ*cos(θ-β));

[0078] Equation 210 for outer wall surface:

[0079] X=Rb*(cos(θ+β)+θ*sin(θ+β));

[0080] Y=Rb*(sin(θ+β)-θ*cos(θ+β));

[0081] Where Rb is the radius of the base circle 1, β is the starting angle of the outer wall 210 profile, and θ is the development angle of the vortex tooth profile;

[0082] It is worth noting that Rb, β, and θ are set according to the design requirements of the moving scroll 200.

[0083] S200, take the starting point K of the center line 230 of the profile of the outer wall surface 210 and the profile of the inner wall surface 220 of the moving scroll 200 on the base circle 1, and connect the line segment OK.

[0084] Figure 6In the diagram, point O is the center of base circle 1. The starting point K of the center line 230 of the profile of the outer wall surface 210 and the profile of the inner wall surface 220 of the moving scroll 200 is on base circle 1. The starting point J of the profile of the outer wall surface 210 before correction is also on base circle 1. The angle β between the straight line OK and the straight line OJ is the starting angle of the profile of the outer wall surface 210.

[0085] S300, draw a tangent AB to the base circle 1, intersecting the base circle 1 at point B, and intersecting the profile of the inner wall surface 220 of the moving vortex 200 at point A. The development angle of the tangent AB relative to the line segment OK is Φ1.

[0086] S400, draw a tangent CD to the base circle 1, intersecting the base circle 1 at point C, and intersecting the profile of the outer wall surface 210 of the moving vortex 200 at point D. The expansion angle of the tangent CD relative to the line segment OK is Φ2, Φ1-Φ2=180°, and take point D1 on the tangent CD;

[0087] The length of DD1 is determined based on the deformation of the worm gear head of the moving worm gear 200. In this embodiment, the length of DD1 is greater than 0 mm and less than or equal to 0.1 mm. For example, DD1 can be 0.02 mm, 0.04 mm, 0.06 mm, 0.08 mm, or 0.1 mm, etc.

[0088] S500. Take points O1 and O2 on tangent AB and tangent CD1 respectively. Draw circles with O1 and O2 as centers and O1A and O2D1 as radii respectively. Draw the common tangent of the two circles. The common tangent intersects the profile of the inner wall surface 220 of the moving scroll 200 at points F1 and E1 respectively. The straight line E1F1 is the second straight line segment, the arc AF1 is the second inner circle arc segment, and the arc D1E1 is the second center head segment. Wherein, O1A-O2D1=R+ΔL, and R is the rotation radius of the moving scroll 200.

[0089] Figure 6 In the middle, R 11 Let the radius be O1A, R 21 Let the radius be O2D1.

[0090] In this embodiment, R = 4.8 mm, R 11 =6.8mm, R 21 =1.7mm, R=R 11 -R 21 =0.15mm.

[0091] It is worth noting that when ΔL = 0 mm, the tooth head of the moving scroll 200 is fully engaged with the stationary scroll 100 without any gap. Therefore, ΔL needs to be greater than 0. In this embodiment, the length of ΔL is greater than 0 mm and less than or equal to 0.015 mm. For example, ΔL can be 0.005 mm, 0.01 mm, or 0.015 mm, etc., and can be set according to actual needs.

[0092] S600, draw the tangent GH of the base circle 1, which intersects the base circle 1 at point G and the profile of the outer wall surface 210 of the moving vortex 200 at point H. The expansion angle of the tangent GH relative to the line segment OK is Φ2+γ, where γ is a preset angle.

[0093] S700. Take point O3 on the tangent GH, draw a circle with O3 as the center and O3H as the radius, and make the circle pass through point D1. The arc HD1 is the second outer circle arc segment.

[0094] Figure 6 In this context, R3 represents the radius O3H.

[0095] Specifically, the method for obtaining point O3 is as follows:

[0096] Connect line segment HD1 and draw the perpendicular bisector of line segment HD1. The intersection of the perpendicular bisector and the tangent GH is point O3.

[0097] Furthermore, since the structure of the moving scroll 200 provided in this embodiment is the same as that of the stationary scroll 100, the correction method for the scroll tooth profile of the stationary scroll 100 is the same as that for the moving scroll 200.

[0098] It is worth noting that the correction method for spiral tooth profiles provided in this embodiment is not limited to the correction of the head of circular involute spiral tooth profiles, but is also applicable to the correction of the heads of other spiral tooth profiles, such as Archimedes spirals, algebraic spirals, involutes with variable base circle radii, envelope profiles, and general profiles.

[0099] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A scroll compressor, comprising a moving scroll (200) and a stationary scroll (100) having the same structure and scroll tooth profile, wherein the stationary scroll (100) and the moving scroll (200) are arranged facing each other, characterized in that, The vortex tooth profile of the stationary vortex disk (100) includes a first outer arc segment, a first central head segment, a first straight line segment, and a first inner arc segment, all of which are close to the tooth head of the stationary vortex disk (100); the vortex tooth profile of the moving vortex disk (200) includes a second outer arc segment, a second central head segment, a second straight line segment, and a second inner arc segment, all of which are close to the tooth head of the moving vortex disk (200). Before the compression process of the stationary volute (100) and the moving volute (200) ends, within the preset angle range of rotation of the stationary volute (100) and the moving volute (200), a first gap is formed between the first outer arc segment and the inner wall of the moving volute (200), and a second gap is formed between the second outer arc segment and the inner wall of the stationary volute (100). During the exhaust process of the stationary vortex disk (100) and the moving vortex disk (200), a third gap is formed between the first central head section and the second inner arc section, and a fourth gap is formed between the second central head section and the first inner arc section.

2. The scroll compressor according to claim 1, characterized in that, The preset angle is greater than 0° and less than or equal to 85°.

3. The scroll compressor according to claim 1, characterized in that, The first gap and the second gap gradually increase from zero during the compression process between the stationary volute (100) and the moving volute (200); The third and fourth gaps gradually increase in size from the first gap during the exhaust process of the stationary vortex disk (100) and the moving vortex disk (200).

4. The scroll compressor according to claim 1, characterized in that, During the compression process between the stationary volute (100) and the moving volute (200), the first gap and the second gap gradually increase from 0 mm to 0.18 mm. The third and fourth gaps gradually increase from 0.18 mm to 0.25 mm during the exhaust process of the stationary vortex disk (100) and the moving vortex disk (200).

5. The scroll compressor according to claim 1, characterized in that, The size of the first gap is equal to the size of the second gap, and the size of the third gap is equal to the size of the fourth gap.

6. A method for correcting the tooth profile of a scroll compressor, wherein the method is used to correct the stationary scroll (100) and the moving scroll (200) of the scroll compressor according to any one of claims 1-5, characterized in that, The method for correcting the vortex tooth profile includes the following steps: S100. Draw the outline of the moving scroll plate (200) according to the equation of the scroll tooth profile. The equation of the scroll tooth profile of the moving scroll plate (200) is as follows: Inner wall surface (220) equation: X=Rb*(cos(θ-β)+θ*sin(θ-β)); Y=Rb*(sin(θ-β)-θ*cos(θ-β)); Equation of outer wall surface (210): X=Rb*(cos(θ+β)+θ*sin(θ+β)); Y=Rb*(sin(θ+β)-θ*cos(θ+β)); Where Rb is the radius of the base circle (1), β is the starting angle of the outer wall surface (210) profile, and θ is the unfolding angle of the vortex tooth profile; S200, On the base circle (1), take the starting point K of the center line (230) of the profile of the outer wall surface (210) and the profile of the inner wall surface (220) of the moving scroll (200), and connect the line segment OK; S300, draw the tangent AB of the base circle (1) and intersect the base circle (1) at point B, and intersect the profile of the inner wall surface (220) of the moving scroll (200) at point A. The expansion angle of the tangent AB relative to the line segment OK is Φ1. S400, draw the tangent CD of the base circle (1) and intersect the base circle (1) at point C, and intersect the profile of the outer wall surface (210) of the moving scroll (200) at point D. The expansion angle of the tangent CD relative to the line segment OK is Φ2, Φ1-Φ2=180°, and take point D1 on the tangent CD; S500. Take points O1 and O2 on the tangent AB and the tangent CD1 respectively. Draw circles with O1 and O2 as centers and O1A and O2D1 as radii respectively. Draw the common tangent of the two circles. The common tangent intersects the profile of the inner wall surface (220) of the moving scroll (200) at points F1 and E1 respectively. The straight line E1F1 is the second straight line segment, the arc AF1 is the second inner circle arc segment, and the arc D1E1 is the second center head segment. Wherein, O1A-O2D1=R+ΔL, and R is the rotation radius of the moving scroll (200). S600. Draw the tangent GH of the base circle (1) and intersect the base circle (1) at point G. It intersects the profile of the outer wall surface (210) of the moving scroll (200) at point H. The expansion angle of the tangent GH relative to the line segment OK is Φ2+γ, where γ is a preset angle. S700. Take point O3 on the tangent GH, draw a circle with O3 as the center and O3H as the radius, and make the circle pass through point D1. The arc HD1 is the second outer circle arc segment.

7. The method for correcting the vortex tooth profile according to claim 6, characterized in that, The method for obtaining point O3 is as follows: Connect line segment HD1, and draw the perpendicular bisector of line segment HD1. The intersection of the perpendicular bisector and the tangent GH is point O3.

8. The method for correcting the vortex tooth profile according to claim 6, characterized in that, The method for correcting the vortex tooth profile of the stationary vortex disk (100) is the same as the method for correcting the vortex tooth profile of the moving vortex disk (200).

9. The method for correcting the vortex tooth profile according to claim 6, characterized in that, The length of DD1 is greater than 0 mm and less than or equal to 0.1 mm.

10. The method for correcting the vortex tooth profile according to claim 6, characterized in that, The length of ΔL is greater than 0 mm and less than or equal to 0.015 mm.

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