Sliding vane of compressor, compression mechanism having same, and compressor

Abstract

The present invention discloses a vane of a compressor and a compression mechanism and a compressor having the same. The compression mechanism includes: a cylinder having a compression chamber and a vane groove connected to the compression chamber; a piston eccentrically rotatably disposed in the compression chamber; a vane slidably disposed in the vane groove, with one end of the vane away from the compression chamber forming a vane back cavity with the vane groove; wherein the vane includes a sliding portion and a stop portion, the stop portion often stops against the piston so that the sliding portion reciprocates with the piston in the vane groove, and the cross-sectional area of ​​the sliding portion is smaller than the maximum cross-sectional area of ​​the stop portion. According to the compression mechanism of the compressor of the embodiment of the present invention, the vane has good wear resistance, long service life, and low manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and in particular to a sliding vane of a compressor, a compression mechanism having the same, and a compressor. Background Art

[0002] In a compressor, the vane abuts against the eccentrically rotating piston within the cylinder's compression chamber. Driven by the piston, the vane reciprocates within the vane groove. The vane's tip, where it contacts the piston, is susceptible to wear, shortening the vane's service life and impacting the compressor's stability. The vanes used in compressors in the related art are subject to significant pressure during reciprocating motion, leading to significant wear between the vane's tip and the piston, impacting the vane's service life and the compressor's stability. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a compression mechanism of a compressor, wherein the sliding vanes of the compression mechanism have good wear resistance, long service life and low manufacturing cost.

[0004] The present invention also provides a sliding vane used for the compression mechanism and a compressor having the compression mechanism.

[0005] According to the first aspect of the present invention, the compression mechanism of the compressor includes: a cylinder having a compression chamber and a vane groove connected to the compression chamber; a piston, which is eccentrically rotatable in the compression chamber; a vane, which is slidably arranged in the vane groove, and the end of the vane away from the compression chamber forms a vane back cavity with the vane groove; wherein the vane includes a sliding portion and a stop portion, the stop portion often stops at the piston so that the sliding portion reciprocates with the piston in the vane groove, and the cross-sectional area of ​​the sliding portion is smaller than the maximum cross-sectional area of ​​the stop portion.

[0006] According to the compression mechanism of the compressor of the embodiment of the present invention, the sliding vane has good wear resistance, long service life and low manufacturing cost.

[0007] In addition, the compression mechanism of the compressor according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the width of the sliding portion is smaller than the maximum width of the stopping portion.

[0009] According to some embodiments of the present invention, a ratio of the width of the sliding portion to the maximum width of the stopping portion is greater than or equal to 1 / 2 and less than or equal to 5 / 6.

[0010] According to some embodiments of the present invention, the sliding portion is connected to the center of the stopping portion in the width direction.

[0011] According to some embodiments of the present invention, a surface of the stop portion facing the piston is configured as an arc-shaped surface.

[0012] According to some embodiments of the present invention, the compression mechanism further includes a sliding leaf spring located in the sliding leaf back cavity, one end of the sliding leaf spring abuts against the sliding portion and the other end abuts against the inner wall of the sliding leaf back cavity.

[0013] According to some embodiments of the present invention, the sliding portion is configured with a fixing groove that cooperates with the sliding leaf spring, and there are at least two fixing grooves that are spaced apart along the height direction of the sliding portion.

[0014] According to some embodiments of the present invention, a receiving groove is configured at one end of the sliding vane groove adjacent to the compression chamber, and when the piston pushes the sliding vane to a maximum distance away from the compression chamber, the stop portion is located in the receiving groove.

[0015] According to some embodiments of the present invention, the width of the receiving groove is equal to the maximum width of the stopping portion.

[0016] According to some embodiments of the present invention, the sliding portion and the stopping portion are separate parts made of different materials.

[0017] According to some embodiments of the present invention, the outer surface of the stop portion is provided with a DLC coating.

[0018] The compressor provided in accordance with the second embodiment of the present invention includes the compression mechanism of the compressor in accordance with the first embodiment of the present invention.

[0019] The compressor according to the embodiment of the present invention utilizes the compression mechanism according to the embodiment of the first aspect of the present invention, so the sliding vane has better wear resistance, longer service life and lower manufacturing cost.

[0020] The vane of the compressor proposed in accordance with the third aspect of the present invention includes: a sliding portion, which is suitable for slidably engaging with the vane groove; a stop portion, which is connected to the sliding portion and is suitable for stopping against the piston, and the cross-sectional area of ​​the sliding portion is smaller than the maximum cross-sectional area of ​​the stop portion.

[0021] The sliding vane of the compressor according to the embodiment of the present invention has the advantages of good wear resistance, long service life and low manufacturing cost.

[0022] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0024] Figure 1 is a longitudinal sectional view of a compressor according to an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a sliding plate and a sliding plate spring according to an embodiment of the present invention;

[0026] Figure 3 yes Figure 1 Cross-section at X in the middle;

[0027] Figure 4 yes Figure 1 Cross-sectional view at point X when the middle slide moves to the top with the piston.

[0028] Reference numerals:

[0029] Compressor 1; housing 2; motor 3; lubricating oil 4; compression mechanism 5; crankshaft 8; eccentric shaft 8a;

[0030] Cylinder 10; compression chamber 11; low-pressure chamber 11a; high-pressure chamber 11b; cutout groove 11c; vane groove 12; receiving groove 12a; vane back cavity 12b; suction hole 13; piston 15;

[0031] Sliding plate 20; sliding portion 21; sliding plane 21a; end surface 21b; fixing groove 21c; back surface 24; stop portion 22; arcuate surface 22a; plane 22b; sliding plate spring 25;

[0032] Main bearing 30; exhaust hole 30a; exhaust valve 30b; muffler 31; auxiliary bearing 33. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center," "length," "width," "height," "up," "down," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] Reference below Figure 1-Figure 4 The compression mechanism 5 of the compressor according to the first embodiment of the present invention will be described.

[0037] like Figure 1 As shown, the compression mechanism 5 of the compressor according to an embodiment of the present invention includes a cylinder 10, a piston 15 and a vane 20. The cylinder 10 has a compression chamber 11 and a vane groove 12 connected to the compression chamber 11. The piston 15 is eccentrically rotatable in the compression chamber 11. The vane 20 is slidably arranged in the vane groove 12. The end of the vane 20 away from the compression chamber 11 forms a vane back cavity 12b with the vane groove 12. The vane 20 includes a sliding portion 21 and a stop portion 22. The stop portion 22 often stops at the piston 15 so that the sliding portion 21 reciprocates with the piston 15 in the vane groove 12. The cross-sectional area of ​​the sliding portion 21 is smaller than the maximum cross-sectional area of ​​the stop portion 22.

[0038] Specifically, if Figure 3As shown, during the eccentric rotation of the piston 15 in the compression chamber 11, the position of the vane 20 relative to the vane groove 12 changes with the change of the revolution angle of the piston 15. The outer peripheral surface of the piston 15 always abuts against the inner peripheral wall of the compression chamber 11. The compression chamber 11 is divided into a low-pressure chamber 11a and a high-pressure chamber 11b by the vane 20 and the piston 15. Since the rotation direction of the piston 15 is counterclockwise, the volume of the low-pressure chamber 11a gradually increases and the air pressure gradually decreases as the piston 15 rotates eccentrically, the volume of the high-pressure chamber 11b gradually decreases and the air pressure gradually increases, and the vane 20 moves in the vane groove 12 in a direction away from the compression chamber 11, and the volume of the vane back cavity 12b is compressed by the vane 20 so that the air pressure in the vane back cavity 12b gradually increases.

[0039] like Figure 4 As shown, when the vane 20 moves to the top with the piston 15, the volume of the high-pressure chamber 11b is zero, the volume of the low-pressure chamber 11a reaches its maximum and is equal to the volume of the compression chamber 11, and the air pressure at the end of the vane 20 adjacent to the compression chamber 11 is the smallest. At the same time, the volume of the vane back chamber 12b is compressed to a minimum and the air pressure in the vane back chamber 12b is also the smallest. The air pressure at the end of the vane 20 away from the compression chamber 11 is the largest. Because the stop portion 22 is always located in the compression chamber 11, the pressure on the vane 20 is the product of the pressure difference at both ends of the sliding portion 21 and the cross-sectional area of ​​the sliding portion 21, that is, F1 = SxΔP. Therefore, the pressure on the vane 20 is proportional to the cross-sectional area of ​​the sliding portion 21. It should be noted that Figure 3 and Figure 4 Ps and Pd shown in represent low pressure and high pressure, respectively.

[0040] According to the compression mechanism 5 of the compressor of the embodiment of the present invention, the slide 20 is constructed so that the cross-sectional area of ​​the sliding portion 21 is smaller than the cross-sectional area of ​​the stop portion 22. Compared with the slide in the related art in which the cross-sectional areas of the stop portion and the sliding portion are equal, the slide 20 in the embodiment of the present invention is subjected to a relatively small force F1 during the reciprocating motion of the piston 15, thereby reducing the wear of the stop portion 22 and the piston 15 and improving the service life of the stop portion 22. At the same time, the wear of the outer peripheral wall of the piston 15 is also relatively reduced, reducing the occurrence of gas leakage caused by poor contact between the outer peripheral wall of the piston 15 and the inner peripheral wall of the cylinder 10 due to the wear of the outer peripheral wall of the piston 15 by the stop portion 22, thereby ensuring the cooling effect of the compressor 1. Furthermore, since the cross-sectional area of ​​the sliding portion 21 is smaller than the cross-sectional area of ​​the stop portion 22, the volume of the slide 20 is reduced, thereby reducing the material cost of the slide 20.

[0041] Therefore, the compression mechanism 5 of the compressor according to the embodiment of the present invention has the advantages of good wear resistance of the sliding vane 20 and low manufacturing cost.

[0042] In some embodiments of the present invention, Figure 2As shown, the width W1 of the sliding portion 21 is smaller than the maximum width W2 of the stop portion 22. Specifically, the width W1 of the sliding portion 21 is equal at all locations along its length. The sliding portion 21 can be constructed as a rectangular parallelepiped structure. The distance between the two sliding planes 21a of the sliding portion 21 is the width W1 of the sliding portion 21, and the distance between the upper and lower end surfaces 21b of the sliding portion 21 is the height of the sliding portion 21. On the basis of keeping the height direction of the sliding portion 21 unchanged, the width W1 of the sliding portion 21 is reduced so that the width W1 of the sliding portion 21 is smaller than the maximum width W2 of the stop portion 22, thereby reducing the cross-sectional area of ​​the sliding portion 21. Compared with the related art in which the width of the sliding portion of the sliding plate is usually equal to the maximum width of the stop portion, the width W1 of the sliding portion 21 in the embodiment of the present invention is smaller than the width of the sliding portion in the related art. Therefore, the pressure on the sliding plate 20 in the embodiment of the present invention is smaller.

[0043] Optionally, the ratio of the width W1 of the sliding portion 21 to the maximum width W2 of the stop portion 22 is greater than or equal to 1 / 2 and less than or equal to 5 / 6. Specifically, if the ratio of the width W1 of the sliding portion 21 to the maximum width W2 of the stop portion 22 is less than 1 / 2, the contact area between the sliding portion 21 and the stop portion 22 is small, which is not conducive to the connection and fixation of the sliding portion 21 and the stop portion 22, and the overall structural strength of the slide 20 is poor; if the ratio of the width W1 of the sliding portion 21 to the maximum width W2 of the stop portion 22 is greater than 5 / 6, the cross-sectional area of ​​the sliding portion 21 is closer to the maximum cross-sectional area of ​​the stop portion 22, and the effect of reducing the pressure on the slide 20 is small. Therefore, it is suitable to control the ratio of the width of the sliding portion 21 to the maximum width of the stop portion 22 to be between 1 / 2 and 5 / 6.

[0044] Preferably, the ratio of the width W1 of the sliding portion 21 to the maximum width W2 of the stop portion 22 is suitable to be set to 2 / 3, that is, the cross-sectional area of ​​the sliding portion 21 is 2 / 3 of the maximum cross-sectional area of ​​the stop portion 22. In this way, the pressure exerted on the sliding vane 20 in the embodiment of the present invention is reduced by 1 / 3 compared with the pressure exerted on the sliding vane in the related art. The overall structural strength of the sliding vane 20 is better and the wear resistance of the sliding vane 20 is also better.

[0045] For example, in the compressor of a household air conditioner using refrigerant R32, under normal operating conditions, high pressure Pd = 3.4 MPa, low pressure Ps = 1.0 MPa, and pressure difference ΔP = 2.4 MPa (24.47 kgf / cm 2 In the related art, assuming that the width of the sliding portion is equal to the maximum width of the stop portion, which is equal to 3 mm, the pressure on the sliding piece is F2 = 0.3 cm x 3 cm x 24.47 kgf / cm 2= 22kgf; In the embodiment of the present invention, assuming that the maximum width W2 of the stop portion 22 is 3mm and the maximum width W1 of the sliding portion 21 is 2mm, the pressure F1 on the sliding piece 20 is = 0.2mmx3mmx24.47kgf / cm 2 =14.7 kgf. Thus, by comparison, it can be intuitively concluded that the pressure on the sliding vane 20 of the embodiment of the present invention is only 2 / 3 of the pressure on the sliding vane in the related art. Therefore, the sliding vane 20 of the embodiment of the present invention has better wear resistance and longer service life.

[0046] In addition, in the rotary compressor 1 of the water heater using CO2 refrigerant, under normal operating conditions, the high pressure Pd = 10.0 MPa, the low pressure Ps = 3.0 MPa, and the pressure difference ΔP = 7.0 MPa. The vane 20 of the embodiment of the present invention has a more obvious pressure reduction effect in the application of this type of compressor.

[0047] In some specific examples of the present invention, Figure 2 As shown, the sliding portion 21 is connected to the center of the width direction of the stop portion 22. Specifically, the surface of the stop portion 22 facing the sliding portion 21 is configured as a plane 22b, and the sliding portion 21 is connected to the center of the width direction of the plane 22b. As a result, the stress distribution between the stop portion 22 and the sliding portion 21 is relatively uniform, and the force effect of the sliding piece 20 is better.

[0048] Optionally, continue with reference to Figure 2 In the illustrated embodiment, the surface of the stop portion 22 facing the piston 15 is configured as an arcuate surface 22a. Specifically, the projection of the surface of the stop portion 22 facing the piston 15 in a plane perpendicular to the height of the stop portion 22 forms an arc. The arcuate surface 22a abuts the outer peripheral wall of the piston 15. The width of the stop portion 22 gradually increases toward the sliding portion 21. This allows the stop portion 22 to roll relative to the piston 15, effectively driving the stop portion 22 from the piston 15.

[0049] According to some embodiments of the present invention, Figure 2-Figure 4 As shown, the compression mechanism 5 further includes a sliding spring 25, which is located in the sliding back cavity 12b. One end of the sliding spring 25 abuts against the sliding portion 21 and the other end abuts against the inner wall of the sliding back cavity 12b. Specifically, the sliding spring 25 is compressed by the sliding portion 21 in the sliding back cavity 12b, as shown in FIG. Figure 3 As shown, when the slide 20 slides with the piston 15 in the direction away from the compression chamber 11, the slide spring 25 is gradually compressed until the slide 20 moves to the maximum displacement relative to the compression chamber 11, as shown in FIG. Figure 4 As shown, at this time, the deformation of the sliding plate spring 25 is the largest, and the piston 15 is Figure 4The position continues to roll in the counterclockwise direction, and the sliding plate 20 often stops at the piston 15 under the elastic force of the sliding plate spring 25. Thus, the sliding plate 20 can automatically reset during the reciprocating motion, and the abutment effect of the sliding plate 20 and the piston 15 is better.

[0050] Further, continue to refer to Figure 2 In the illustrated embodiment, the sliding portion 21 is configured with a fixing groove 21c that mates with the sliding spring 25. There are at least two fixing grooves 21c, spaced apart along the height of the sliding portion 21. Specifically, the surface of the sliding portion 21 facing the sliding spring 25 is the back surface 24, and the fixing grooves 21c are formed by an inward depression of the back surface 24. The fixing grooves 21c extend through the width of the sliding portion 21. Two fixing grooves 21c may be provided, with portions of the sliding spring 25 embedded in both fixing grooves 21c. This effectively positions the sliding spring 25 in the sliding portion 20, facilitating installation.

[0051] In some examples of the present invention, Figure 3 and Figure 4 As shown, a receiving groove 12a is constructed at one end of the vane groove 12 adjacent to the compression chamber 11. When the piston 15 pushes the vane 20 to its maximum distance from the compression chamber 11, the stop portion 22 is located within the receiving groove 12a. Specifically, the receiving groove 12a is connected to the vane groove 12 and is located at the end of the vane groove 12 adjacent to the compression chamber 11. The receiving groove 12a is formed by an outward depression in the inner peripheral wall of the vane groove 12. When the piston 15 pushes the vane 20 to its maximum distance from the compression chamber 11, the stop portion 22 is received within the receiving groove 12a. This ensures that the orbital trajectory of the piston 15 within the compression chamber 11 is a regular circle or ellipse.

[0052] According to some embodiments of the present invention, the width of the receiving groove 12a is equal to the maximum width of the stop portion 22. Specifically, the width of the receiving groove 12a is equal to the maximum width of the stop portion 22, and the depth of the receiving groove 12a is equal to the length of the stop portion 22. Since the width of the receiving groove 12a is equal to the maximum width of the stop portion 22, the capacity of the compression chamber 11 remains unchanged when the stop portion 22 is accommodated in the receiving groove 12a, thereby avoiding the situation where the cooling capacity is reduced due to the excessive width of the receiving groove 12a.

[0053] According to some embodiments of the present invention, the sliding portion 21 and the stop portion 22 are separate components made of different materials. Specifically, because the stop portion 22 often abuts against the piston 15 and rolls relative to the piston 15, the material used for the stop portion 22 must have higher hardness and slip resistance than the material used for the sliding portion 21. Separate processing allows for optimal material selection for the sliding portion 21 and the stop portion 22, thereby reducing the material cost of the slide 20. Optionally, the stop portion 22 and the sliding portion 21 can be integrally connected by welding.

[0054] Furthermore, the outer surface of the stop portion 22 is provided with a DLC coating. DLC is a diamond-like carbon material with good hardness and anti-slip properties, which can improve the wear resistance and anti-slip properties of the stop portion 22, thereby further extending the service life of the sliding piece 20.

[0055] Reference below Figure 1 A compressor 1 according to an embodiment of the second aspect of the present invention is described.

[0056] The compressor 1 according to the embodiment of the present invention includes the compression mechanism 5 of the compressor according to the embodiment of the first aspect of the present invention.

[0057] Specifically, the compressor 1 includes a shell 2, a motor 3, a main bearing 30, a secondary bearing 33 and a compression mechanism 5 of a compressor according to an embodiment of the first aspect of the present invention. The cylinder 10 is arranged in the shell 2, the main bearing 30 and the secondary bearing 33 are respectively arranged on the upper and lower sides of the cylinder 10 and seal the compression chamber 11, the crankshaft 8 is slidably matched with the main bearing 30 and the secondary bearing 33, the motor 3 drives the crankshaft 8 to rotate so that the eccentric shaft 8a on the crankshaft 8 drives the piston 15 to rotate eccentrically in the cylinder 10, and lubricating oil 4 is provided at the bottom of the shell 2.

[0058] According to the compressor 1 of the embodiment of the present invention, by utilizing the compression mechanism 5 according to the first embodiment of the present invention, the pressure on the sliding vane 20 is small, thereby improving the wear resistance of the sliding vane 20 and further increasing the service life of the sliding vane 20.

[0059] According to some embodiments of the present invention, the main bearing 30 is provided with an exhaust hole 30a connected to the compression chamber 11, a suction hole 13 and an exhaust valve 30b for opening and closing the exhaust hole 30a. The exhaust hole 30a is formed by a cutout groove 11c on the main bearing 30. The main bearing 30 is also provided with a muffler 31 for reducing noise.

[0060] The vane 20 of the compressor proposed in accordance with the third aspect of the present invention includes a sliding portion 21 and a stop portion 22, wherein the sliding portion 21 is suitable for slidably engaging with the vane groove 12, the stop portion 22 is connected to the sliding portion 21 and is suitable for stopping at the piston 15, and the cross-sectional area of ​​the sliding portion 21 is smaller than the maximum cross-sectional area of ​​the stop portion 22.

[0061] According to the vane 20 of the compressor of the embodiment of the present invention, the sliding portion 21 of the vane 20 has a small cross-sectional area, the material cost of the vane 20 is low, and the pressure on the vane 20 during the reciprocating motion is small, so the wear between the vane 20 and the piston 15 is also small, thereby improving the service life of the vane 20.

[0062] The vane 20 of the compressor according to the embodiment of the present invention, the compression mechanism 5 having the same, and other structures and operations of the compressor 1 are well known to those skilled in the art and will not be described in detail here.

[0063] Throughout this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A compression mechanism of a compressor, characterized in that: include: a cylinder having a compression chamber and a sliding vane groove communicating with the compression chamber; a piston eccentrically rotatably disposed in the compression chamber; a sliding vane, the sliding vane being slidably disposed in the sliding vane groove, wherein an end of the sliding vane away from the compression chamber forms a sliding vane back cavity with the sliding vane groove; The sliding plate includes a sliding portion and a stop portion, the stop portion always stops at the piston so that the sliding portion reciprocates with the piston in the sliding plate groove, and the width of the sliding portion is reduced on the basis of the height direction of the sliding portion remaining unchanged so that the width of the sliding portion is smaller than the maximum width of the stop portion, thereby reducing the cross-sectional area of ​​the sliding portion, and the cross-sectional area of ​​the sliding portion is smaller than the maximum cross-sectional area of ​​the stop portion; The surface of the stop portion facing the piston is configured as an arcuate surface, the arcuate surface abuts against the outer peripheral wall of the piston, the width of the stop portion gradually increases in the direction toward the sliding portion, and the sliding portion is connected to the center of the stop portion in the width direction; An end of the sliding vane groove adjacent to the compression chamber is configured with a receiving groove. When the piston pushes the sliding vane to a maximum distance away from the compression chamber, the stop portion is located in the receiving groove.

2. The compression mechanism of the compressor according to claim 1, characterized in that: The ratio of the width of the sliding portion to the maximum width of the stopping portion is greater than or equal to 1 / 2 and less than or equal to 5 / 6.

3. The compression mechanism of the compressor according to claim 1, characterized in that Also includes: A sliding leaf spring is located in the sliding leaf back cavity, one end of the sliding leaf spring abuts against the sliding portion and the other end abuts against the inner wall of the sliding leaf back cavity.

4. The compression mechanism of the compressor according to claim 3, characterized in that: The sliding portion is configured with a fixing groove matched with the sliding leaf spring, and the fixing grooves are at least two and are spaced apart along the height direction of the sliding portion.

5. The compression mechanism of the compressor according to claim 4, characterized in that: The width of the receiving groove is equal to the maximum width of the stopping portion.

6. The compression mechanism of the compressor according to any one of claims 1 to 5, characterized in that: The sliding portion and the stopping portion are separate parts made of different materials.

7. The compression mechanism of the compressor according to claim 6, characterized in that: The outer surface of the stop portion is provided with a DLC coating.

8. A compressor, characterized in that: A compression mechanism comprising the compressor according to any one of claims 1-7.

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