Air suction structure of compressor cylinder, compressor cylinder and compressor

Abstract

The air suction structure comprises an air inlet duct and an air outlet groove, an opening, in the inner wall of the compressor cylinder, of the air outlet groove is an air outlet, and the air outlet end of the air inlet duct is provided with an air outlet hole section; in the axial direction of the compressor cylinder, the projection contour of the air outlet hole section is provided with a first contour line far away from a cylinder slip sheet groove, the closest intersection point of the extension line of the first contour line and the projection contour of the inner wall of the compressor cylinder is A1, and the projection contour of the air outlet is provided with a point A2 farthest away from an opening of the slip sheet groove; the point A2 is closer to the opening of the slip sheet groove than the point A1; the center of the compressor cylinder is a point O, the included angle between the connecting line OA1 of the point O and the point A1 and the center line of the opening of the sliding vane groove is beta1, the included angle between the connecting line OA2 of the point O and the point A2 and the center line of the opening of the sliding vane groove is beta2, and beta1-beta2 is larger than 3 degrees and smaller than 18 degrees.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressor suction, and particularly relates to a suction structure of a compressor cylinder, a compressor cylinder and a compressor. Background Art

[0002] As Figure 1 shown, the suction structure of the original mass-produced compressor cylinder includes a circular air inlet passage 1' penetrating from the outer wall of the compressor cylinder to the inner wall of the compressor cylinder. If the circular air inlet passage 1' is too small, it will cause a large suction resistance of the compressor, increase power consumption, and even affect the suction volume of the compressor; if the circular air inlet passage 1' is too large, it will cause an increase in the suction closing angle of the compressor cylinder, thereby affecting the effective working volume of the compressor cylinder, reducing the volumetric efficiency of the compressor, and affecting the refrigerating capacity of the compressor.

[0003] In the prior art, a new suction structure of a compressor cylinder is provided, which makes the air inlet passage communicate with the compression chamber of the compressor cylinder through the air outlet groove provided on the inner wall of the compressor cylinder.

[0004] Among them, by providing an air outlet groove on the inner wall of the compressor cylinder, although the suction structure can be closed in advance, if the suction structure is closed too early, the ventilation area of the air outlet groove will be very small, resulting in a large gas resistance of the compressor, thereby greatly increasing the power of the compressor; if the suction structure is closed too late, the refrigerating capacity of the compressor will decrease, reducing the capacity and energy efficiency of the compressor. Therefore, how to reasonably arrange the position of the air outlet groove so that the air outlet groove has a large ventilation area, making the power of the compressor low; and can increase the refrigerating capacity of the compressor, making the compressor have better capacity and energy efficiency has become a technical problem to be continuously solved by those skilled in the art. Summary of the Utility Model

[0005] Therefore, the utility model provides a suction structure of a compressor cylinder, a compressor cylinder and a compressor. The main technical problem to be solved is: how to reasonably arrange the position of the air outlet groove so that the air outlet groove has a large ventilation area, making the power of the compressor low; and can increase the refrigerating capacity of the compressor, making the compressor have better capacity and energy efficiency.

[0006] To solve the above problems, the utility model provides a suction structure of a compressor cylinder, including an air inlet passage provided on the outer wall of the compressor cylinder and an air outlet groove provided on the inner wall of the compressor cylinder. The air inlet passage communicates with the compression chamber of the compressor cylinder through the air outlet groove; the opening of the air outlet groove on the inner wall of the compressor cylinder is an air outlet, and the air outlet groove penetrates at least one axial end of the compressor cylinder; the air outlet end of the air inlet passage has an air outlet hole section; and there is a sliding vane groove opening on the inner wall of the compressor cylinder.

[0007] Along the axial direction of the compressor cylinder, the projected contour of the air outlet section has a first contour line away from the cylinder sliding vane slot, and the closest intersection point of the extension line of the first contour line and the projected contour of the inner wall of the compressor cylinder is A1, and the projected contour of the air outlet has a point A2 that is farthest from the opening of the sliding vane slot; wherein, point A2 is closer to the opening of the sliding vane slot than point A1; the center of the compressor cylinder is point O, the included angle between the line OA1 connecting point O and point A1 and the center line of the sliding vane slot opening is β1, the included angle between the line OA2 connecting point O and point A2 and the center line of the sliding vane slot opening is β2, and 3° < β1 - β2 < 18°.

[0008] In some embodiments, the curvature of any point on the contour of the cross-section of the air outlet groove is K, wherein, K ≤ 1 or K ≤ 0.67, and the cross-section is perpendicular to the axis of the compressor cylinder.

[0009] In some embodiments, the air outlet groove penetrates through the axial two ends of the compressor cylinder; the axial height of the compressor cylinder is H, the air outlet section is a round hole section, and the diameter of the air outlet section is D, wherein, H - D ≥ 3.2 mm.

[0010] In some embodiments, the air inlet passage has a through-hole on the groove wall of the air outlet groove; the air inlet passage is communicated with the air outlet groove through the through-hole;

[0011] Wherein, the projected contour of the through-hole in the axial direction of the compressor cylinder is a curve Pr, the length of the curve Pr is L1, and the width of the air outlet is L; wherein, L1 ≥ 1.2L;

[0012] And / or, the opening area of the through-hole is SIn, and the air outlet area of the air outlet is S 出气 , wherein, SIn ≥ 0.7*S 出气 ;

[0013] And / or, the opening area of the through-hole is SIn, and the air inlet area of the air outlet section is S 进气 , wherein, SIn ≥ 0.8*S 进气 .

[0014] In some embodiments, the displacement of the compressor cylinder is 8.2 - 10.5 cc.

[0015] In some embodiments, the end of the air outlet section along the air inlet direction has a drainage section, the inner diameter of the drainage section gradually decreases along the direction away from the air outlet section, the drainage section is communicated with the air outlet groove, and the drainage section is used to guide the air flow in the air outlet section to the air outlet groove.

[0016] In some embodiments, along the axial direction of the compressor cylinder, the projection profile of the groove wall of the air outlet groove passes through the projection profile of the diversion section and extends into the projection profile of the air outlet hole section.

[0017] In some embodiments, the air outlet groove is an arc-shaped groove;

[0018] Or, along the air outlet direction of the air outlet groove, the bottom of the air outlet groove is an arc surface, and the upper part of the air outlet groove has opposite first and second groove walls, and the first and second groove walls are parallel to each other; the first groove wall is connected to one end of the arc surface and is tangent to it; the second groove wall is connected to the other end of the arc surface and is tangent to it;

[0019] Or, along the air outlet direction of the air outlet groove, the width D1 of the bottom of the air outlet groove is greater than the width D2 of the upper part of the air outlet groove.

[0020] The present utility model also provides a compressor cylinder, which includes the suction structure of the compressor cylinder described in any one of the above.

[0021] The present utility model also provides a compressor, which includes the compressor cylinder described above.

[0022] The suction structure of the compressor cylinder, the compressor cylinder and the compressor provided by the present utility model have the following beneficial effects:

[0023] 1. By making 5° < β1 - β2 < 18°, the present utility model enables the air outlet groove to have a large ventilation area, resulting in a lower power of the compressor; at the same time, it can increase the refrigerating capacity of the compressor, making the compressor have better performance and energy efficiency.

[0024] 2. By making the curvature K of any point on the contour of the cross-section of the air outlet groove ≤ 1, on the one hand, the vortex phenomenon at various parts of the air outlet groove can be reduced; on the other hand, the processing difficulty and processing cost can also be reduced.

[0025] 3. By making the difference H - D between the axial height H of the compressor cylinder and the diameter D of the air outlet hole section greater than or equal to 3.2 mm, the optimization effect of the suction flow of the compressor is very obvious. Description of the Drawings

[0026] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. The drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0027] Figure 1 It is a schematic structural diagram of a compressor cylinder in the prior art;

[0028] Figure 2 It is a schematic structural diagram of a compressor cylinder of the present utility model;

[0029] Figure 3 It shows a graph of the power of a compressor using the suction structure of the present utility model varying with β1 - β2;

[0030] Figure 4 It shows a graph of the capacity of a compressor using the suction structure of the present utility model varying with β1 - β2;

[0031] Figure 5 It shows a graph of the COP of a compressor using the suction structure of the present utility model varying with β1 - β2;

[0032] Figure 6 It is a cross - sectional view of a compressor cylinder of the present utility model;

[0033] Figure 7 It shows a graph of the suction volume of a compressor using the above - mentioned suction structure varying with H - D;

[0034] Figure 8 It is a schematic diagram reflecting the opening profile of the air outlet;

[0035] Figure 9 It is a schematic structural diagram of another compressor cylinder provided by an embodiment of the present utility model;

[0036] Figure 10 It is a schematic diagram reflecting the projection profile of the through - hole in the axial direction of the compressor cylinder;

[0037] Figure 11 It is a schematic structural diagram of another compressor cylinder provided by an embodiment of the present utility model;

[0038] Figure 12 It is a schematic structural diagram of another compressor cylinder provided by an embodiment of the present utility model.

[0039] Reference numerals are:

[0040] 1, intake passage; 2, outlet groove; 3, drainage section; 4, compression chamber; 5, cylinder slide - plate groove; 11, air - outlet section; 21, first groove wall; 22, second groove wall; 23, arc surface; 24, arc; 101, outer wall; 102, inner wall; 111, first contour line; 201, air outlet; 501, slide - plate groove opening; a, center line of the slide - plate groove opening. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be understood as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations will be made for the spatial relative descriptions used here.

[0044] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning, and thus cannot be understood as limiting the protection scope of the present invention.

[0045] See in conjunction Figure 2As shown in the figure, according to an embodiment of the present invention, a suction structure of a compressor cylinder is provided, including an intake passage 1 provided on the outer wall 101 of the compressor cylinder and an outlet groove 2 provided on the inner wall 102 of the compressor cylinder. The intake passage 1 communicates with the compression chamber 4 of the compressor cylinder through the outlet groove 2. The opening of the outlet groove 2 on the inner wall 102 of the compressor cylinder is an outlet port 201. The outlet groove 2 penetrates at least one axial end of the compressor cylinder. The outlet end of the intake passage 1 has an outlet hole section 11, and the outlet hole section 11 can be a straight circular hole section or a frustum-shaped hole section, etc. The outlet end of the intake passage 1 communicates with the outlet groove 2 through the outlet hole section 11. There is a sliding vane groove opening 51 on the inner wall 102 of the compressor cylinder.

[0046] Along the axial direction of the compressor cylinder, the projection profile of the outlet hole section 11 has a first profile line 111 away from the cylinder sliding vane groove 5 and a second profile line 112 close to the cylinder sliding vane groove 5, and the closest intersection point of the extension line of the first profile line 111 and the projection profile of the inner wall 102 of the compressor cylinder is A1, and the projection profile of the outlet port 201 has a point A2 farthest from the sliding vane groove opening 51. Among them, point A2 is closer to the sliding vane groove opening 51 than point A1. The center of the compressor cylinder is point O, the included angle between the connection line OA1 between point O and point A1 and the center line a of the sliding vane groove opening is β1, and the included angle between the connection line OA2 between point O and point A2 and the center line a of the sliding vane groove opening is β2, 3° < β1 - β2 < 18°. It should be noted here that: the center line a of the above-mentioned sliding vane groove opening extends along the radial direction of the compressor cylinder.

[0047] For the above-mentioned suction structure of the compressor cylinder, Figure 3 shows a graph of the power of a compressor using the above suction structure changing with β1 - β2; among them, Figure 3 the abscissa is β1 - β2 and the unit is degree. Figure 3 the ordinate is the compressor power and the unit is watt. It can be seen from Figure 3 that when 3° < β1 - β2 < 18°, the compressor power is smaller, indicating that at this time the ventilation area of the outlet groove 2 is larger, making the suction resistance of the compressor smaller, thereby reducing the power of the compressor. Figure 4 shows a graph of the capacity of a compressor using the above suction structure changing with β1 - β2; among them, Figure 4 the abscissa is β1 - β2 and the unit is degree. Figure 4 the ordinate is the compressor capacity and the unit is watt. Figure 5 shows a graph of the COP of a compressor using the above suction structure changing with β1 - β2. Among them, Figure 5 the abscissa is β1 - β2 and the unit is degree. Figure 5 the ordinate is the compressor COP and the unit is watt / watt. It can be seen from Figure 4 andFigure 5 It can be seen that when 3° < β1 - β2 < 18°, both the compressor capacity and the compressor COP are relatively good, indicating that the refrigerating capacity of the compressor is relatively large at this time, and the compressor capacity and the compressor COP can be improved.

[0048] In some embodiments, such as Figure 2 shown, the curvature of any point on the contour of the cross-section of the aforementioned air outlet groove 2 is K. Among them, K ≤ 1 or K ≤ 0.67, and the above-mentioned cross-section is perpendicular to the axis of the compressor cylinder.

[0049] In the above example, by making K ≤ 1, on the one hand, the eddy current phenomenon at various parts of the air outlet groove 2 can be reduced; on the other hand, the processing difficulty and processing cost can also be reduced. Specifically, if the maximum curvature of the contour of the cross-section of the air outlet groove 2 is K1, the diameter D of the milling cutter generally selected during processing is: D = 2 / K1; during processing, when a milling cutter with a diameter D greater than or equal to 3 mm is used for processing, the tool life is relatively long, the processing beat meets the requirements of mass production, the efficiency is high, and the cost is relatively low. If K > 0.67, a milling cutter with a diameter less than 3 mm needs to be selected for processing. At this time, the tool life will drop sharply, and at the same time, the processing beat is slow, the efficiency is low, and the production cost is high. When K > 2, a milling cutter with a diameter less than 1 mm needs to be selected or wire cutting or electric discharge machining needs to be used for processing, and the cost will rise sharply, which cannot meet the mass production requirements.

[0050] In some embodiments, the aforementioned air outlet groove 2 penetrates through the axial two ends of the compressor cylinder to facilitate the processing of the air outlet groove 2 and increase the air outlet area.

[0051] In some embodiments, such as Figure 6 shown, the axial height of the aforementioned compressor cylinder is H, the air outlet hole section 11 is a round hole section, and the diameter of the air outlet hole section 11 is D. Among them, H - D ≥ 3.2 mm.

[0052] In the above example, since the air outlet groove 2 penetrates through the axial two ends of the compressor cylinder, the axial height of the air outlet groove 2 is H. Among them, when the difference between H and D is relatively large, in the axial direction of the compressor cylinder, the spatial dimension for forming eddy current is very large. If there are internal angles or the internal intersection arc radius of the air outlet groove 2 is too small, the suction resistance of the compressor will be seriously increased, resulting in a large increase in the power consumption of the compressor. Figure 7 shows a graph of the suction volume of a compressor using the above-mentioned suction structure varying with H - D. Among them, Figure 7 the abscissa is H - D and the unit is millimeter. Figure 7 the ordinate is the suction volume and the unit is kg / S.

[0053] Such as Figure 7As shown, when H-D increases to more than 3.2 mm, the optimization effect on the suction volume of the compressor is very obvious, and the suction volume of the compressor is large.

[0054] In some embodiments, such as Figure 8 - 9 As shown, the aforementioned intake passage 1 has a through opening 10 on the groove wall of the outlet groove 2. The intake passage 1 communicates with the outlet groove 2 through the through opening 10. Among them, as Figure 10 As shown, the projected profile of the through opening 10 in the axial direction of the compressor cylinder is a curve Pr, the length of the curve Pr is L1, and the width of the outlet 201 is L. Among them, L1≥1.2L.

[0055] In the above example, the intake passage 1 and the outlet groove 2 transition at the through opening 10. The through opening 10 is the bottleneck position between the intake passage 1 and the outlet groove 2, and the flow direction of the refrigerant changes the most at this position. By making L1≥1.2L, it can be ensured that the opening area SIn of the through opening 10 is large, thereby reducing the resistance at the through opening 10.

[0056] In some embodiments, the opening area of the above through opening 10 is SIn, and the outlet area of the outlet is S 出气 , where SIn≥0.7*S 出气 , so that it can be ensured that the opening area SIn of the through opening 10 is large, thereby reducing the resistance at the through opening 10.

[0057] In some embodiments, the intake area of the air outlet section 11 is S 进气 , where SIn≥0.8*S 进气 , so that it can be ensured that the opening area SIn of the through opening 10 is large, thereby reducing the resistance at the through opening 10.

[0058] In some embodiments, the displacement of the aforementioned compressor cylinder is 8.2 to 10.5 cc. Among them, when the displacement of the compressor cylinder is small and less than 8.2 cc, the refrigerant flow rate of the compressor is not large, and the eddy current generated by the compressor is not obvious; when the displacement of the compressor cylinder is greater than 10.5 cc, the flow rate of the compressor is relatively large, and the eddy current phenomenon generated is relatively obvious, making the effect obtained by this solution not very obvious.

[0059] In some embodiments, such as Figure 9 As shown, the end of the aforementioned air outlet section 11 along the intake direction has a drainage section 3. The inner diameter of the drainage section 3 gradually decreases in the direction away from the air outlet section 11. The drainage section 3 communicates with the outlet groove 2. The drainage section 3 is used to guide the airflow in the air outlet section 11 to the outlet groove 2.

[0060] In the above example, by setting the drainage section 3 with a gradually decreasing inner diameter to drain the air outlet section 11, on the one hand, the eddy current effect generated during the transition can be reduced; on the other hand, the direct impact of the refrigerant can be avoided, thus preventing a large amount of energy loss.

[0061] In a specific application example, as Figure 9 shown, along the axial direction of the compressor cylinder, the projected contour of the groove wall of the aforementioned air outlet groove 2 passes through the projected contour of the drainage section 3 and extends into the projected contour of the air outlet section 11. In this way, a part of the end of the air outlet section 11 along the intake direction is directly connected to the air outlet groove 2, so as to improve the intake efficiency.

[0062] The aforementioned air outlet groove 2 can be designed according to actual conditions. For example, in one example, as Figure 2 shown, the aforementioned air outlet groove 2 can be an arc-shaped groove. This structure is simple and can be machined once with a circular milling cutter, with high machining efficiency and low cost. In another example, as Figure 11 shown, along the air outlet direction of the air outlet groove 2, the bottom of the air outlet groove 2 is an arc surface 23, and the upper part of the air outlet groove 2 has opposite first groove walls 21 and second groove walls 22, and the first groove walls 21 and the second groove walls 22 are parallel to each other. The first groove wall 21 is connected to one end of the arc surface 23 and is tangent to it. The second groove wall 22 is connected to the other end of the arc surface 23 and is tangent to it. With such a setting, the machining of the air outlet groove 2 only requires a milling cutter with a diameter of D to feed along the center lines of the first groove wall 21 and the second groove wall 22 to complete the machining. Among them, the diameter of the arc surface 23 is D, and the width between the first groove wall 21 and the second groove wall 22 is B, and B = D. In another example, as Figure 12 shown, along the air outlet direction of the air outlet groove 2, the width D1 of the bottom of the air outlet groove is greater than the width D2 of the upper part of the air outlet groove. Among them, because the width D1 of the bottom of the air outlet groove is greater than the width D2 of the upper part of the air outlet groove, the bottom of the air outlet groove 2 has a buffering effect to reduce the suction resistance of the compressor. In another example, as Figure 9 shown, the air outlet groove 2 can be a rectangular groove, and the bottom surface and each side surface of the air outlet groove 2 are transitioned through an arc 24 to reduce the eddy current effect and facilitate machining.

[0063] The present utility model also provides a compressor cylinder, which can include the suction structure of the compressor cylinder in any one of the above. Among them, due to the adoption of the above suction structure by the compressor cylinder, the air outlet groove 2 can have a larger ventilation area and can also increase the refrigerating capacity of the compressor.

[0064] The present utility model further provides a compressor, which may include the compressor cylinder described above. Among them, due to the adoption of the above compressor cylinder by the compressor, the air outlet groove 2 can have a large ventilation area and can also increase the refrigerating capacity of the compressor.

[0065] It is easy for those skilled in the art to understand that, on the premise of no conflict, the advantageous technical features of the above various methods can be freely combined and superimposed.

[0066] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model. The above is only the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An air intake structure of a compressor cylinder, comprising an air intake channel (1) arranged on an outer wall (101) of the compressor cylinder and an air outlet groove (2) arranged on an inner wall (102) of the compressor cylinder, wherein the air intake channel (1) is connected to a compression chamber (4) of the compressor cylinder through the air outlet groove (2); an opening of the air outlet groove (2) on the inner wall (102) of the compressor cylinder is an air outlet (201), and the air outlet groove (2) at least passes through one axial end of the compressor cylinder; the air outlet end of the air intake channel (1) has an air outlet hole section (11), and the inner wall (102) of the compressor cylinder has a sliding vane groove opening (51); characterized in that: Along the axial direction of the compressor cylinder, the projection contour of the air outlet section (11) has a first contour line (111) away from the cylinder vane groove (5), and the closest intersection point between the extension line of the first contour line (111) and the projection contour of the compressor cylinder inner wall (102) is A1, and the projection contour of the air outlet (201) has a point A2 farthest from the vane groove opening (51); wherein point A2 is closer to the vane groove opening (51) than point A1; the center of the compressor cylinder is point O, the angle between the line OA1 connecting point O and point A1 and the center line (a) of the vane groove opening is β1, the angle between the line OA2 connecting point O and point A2 and the center line (a) of the vane groove opening is β2, and 3°<β1-β2<18°.

2. The air intake structure of the compressor cylinder according to claim 1, characterized in that: The curvature of any point on the profile of the cross section of the outlet groove (2) is K, wherein K≤1 or K≤0.67, and the cross section is perpendicular to the axis of the compressor cylinder.

3. The air intake structure of the compressor cylinder according to claim 1 or 2, characterized in that: The air outlet groove (2) passes through the axial ends of the compressor cylinder; the axial height of the compressor cylinder is H, the air outlet hole section (11) is a circular hole section, and the diameter of the air outlet hole section (11) is D, wherein HD≥3.2 mm.

4. The air intake structure of the compressor cylinder according to claim 1 or 2, characterized in that: The air inlet channel (1) has a through opening (10) on the groove wall of the air outlet groove (2); the air inlet channel (1) is connected to the air outlet groove (2) through the through opening (10); The projection profile of the through hole (10) in the axial direction of the compressor cylinder is a curve Pr, the length of the curve Pr is L1, and the width of the air outlet (201) is L; wherein L1≥1.2L; And / or, the opening area of ​​the through hole (10) is SIn, and the outlet area of ​​the outlet is S 出气 , where SIn≥0.7*S 出气 ; And / or, the opening area of ​​the through hole (10) is SIn, and the air inlet area of ​​the air outlet section (11) is S 进气 , where SIn≥0.8*S 进气 .

5. The air intake structure of the compressor cylinder according to claim 1 or 2, characterized in that: The displacement of the compressor cylinder is 8.2-10.5cc.

6. The air intake structure of the compressor cylinder according to claim 1 or 2, characterized in that: The end of the air outlet section (11) along the air inlet direction is provided with a guide section (3), the inner diameter of the guide section (3) gradually decreases in the direction away from the air outlet section (11), the guide section (3) is connected with the air outlet groove (2), and the guide section (3) is used to guide the airflow in the air outlet section (11) to the air outlet groove (2).

7. The air intake structure of the compressor cylinder according to claim 6, characterized in that: Along the axial direction of the compressor cylinder, the projection contour of the groove wall of the air outlet groove (2) passes through the projection contour of the guide section (3) and extends into the projection contour of the air outlet hole section (11).

8. The air intake structure of the compressor cylinder according to claim 1, 2 or 7, characterized in that: The air outlet groove (2) is an arc-shaped groove; Or, along the gas outlet direction of the gas outlet groove (2), the bottom of the gas outlet groove (2) is a circular arc surface (23), and the upper part of the gas outlet groove (2) has a first groove wall (21) and a second groove wall (22) opposite to each other, and the first groove wall (21) and the second groove wall (22) are parallel to each other; the first groove wall (21) is connected to one end of the circular arc surface (23), and the two are tangent to each other; the second groove wall (22) is connected to the other end of the circular arc surface (23), and the two are tangent to each other; Alternatively, the gas outlet groove (2) is a rectangular groove, and the bottom surface and each side surface of the gas outlet groove (2) are transitioned through an arc (24); Alternatively, along the outlet direction of the outlet groove (2), the width D1 of the bottom of the outlet groove is greater than the width D2 of the upper part of the outlet groove.

9. A compressor cylinder, characterized in that: An air intake structure comprising a compressor cylinder according to any one of claims 1-8.

10. A compressor, characterized in that: Comprising the compressor cylinder as claimed in claim 9.

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