Pump body assembly and vane compressor having the same

Abstract

The present invention provides a pump body assembly and a vane compressor having the same. The pump body assembly includes a flange, a cylinder, a rotating shaft, and a plurality of vanes. The vanes are slidably disposed on the rotor portion of the rotating shaft, which is located within the cylinder. The pump body assembly also includes an exhaust structure disposed on the flange. The exhaust structure includes a guide groove and an exhaust hole connected to the guide groove, the exhaust hole extending from the bottom of the guide groove to the end face of the flange. The rotor portion includes an exhaust groove. During rotation of the rotating shaft, gas within the compression chamber of the cylinder enters the guide groove through the exhaust groove, enters the exhaust hole through the guide groove, and is discharged to the outside of the pump body assembly through the exhaust hole. The present invention effectively solves the problem in the prior art that the structural strength of the flange is low, which affects the normal operation of the vane compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a pump body assembly and a vane compressor having the same. Background Art

[0002] At present, in order to solve the problem of high exhaust velocity and high exhaust resistance caused by the small exhaust area of ​​the vane compressor in the prior art, an annular hole is provided on the flange of the vane compressor for exhaust.

[0003] However, the above setting results in insufficient shaft neck strength of the flange, which makes the annular hole easily deformed and affects the coaxiality of the main shaft, aggravates the deflection deformation, increases the mechanical power consumption of the vane compressor, reduces the overall performance of the vane compressor, and even affects the reliability and service life of the vane compressor. Summary of the Invention

[0004] The main purpose of the present invention is to provide a pump body assembly and a vane compressor having the same, so as to solve the problem in the prior art that the structural strength of the flange is low and thus affects the normal operation of the vane compressor.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a pump body assembly is provided, including a flange, a cylinder, a rotating shaft and a plurality of slides, the slides being slidably arranged on the rotor portion of the rotating shaft, the rotor portion being located in the cylinder, the pump body assembly also including: an exhaust structure arranged on the flange, the exhaust structure including a guide groove and an exhaust hole connected to the guide groove, the exhaust hole extending from the bottom of the guide groove to the end face of the flange; wherein the rotor portion has an exhaust groove, and during the rotation of the rotating shaft, the gas in the compression chamber of the cylinder enters the guide groove through the exhaust groove, so as to enter the exhaust hole through the guide groove, and is discharged to the outside of the pump body assembly through the exhaust hole.

[0006] Furthermore, the flange has a through hole for the rotating shaft to pass through, the guide groove is an arc-shaped groove, and the central axis of the arc-shaped groove is coaxially arranged with the central axis of the through hole.

[0007] Furthermore, the orthographic projection of the guide groove on the end surface is the first projection, the orthographic projection of the exhaust hole on the end surface is the second projection, and the second projection is within the first projection.

[0008] Furthermore, there are multiple exhaust holes, and the multiple exhaust holes are arranged at intervals along the extension direction of the guide groove.

[0009] Furthermore, the exhaust hole is one or more of a circular hole, an elliptical hole, a polygonal hole and a waist-shaped hole.

[0010] Furthermore, the guide groove is an arc-shaped groove, and the central angle A0 of the arc-shaped groove is greater than or equal to 5° and less than or equal to 150°.

[0011] Furthermore, the groove depth h of the guide groove and the thickness H of the flange meet

[0012] Furthermore, the longitudinal cross-sectional area S1 of the guide groove is greater than or equal to 1 mm 2 And less than or equal to 100mm 2 .

[0013] Furthermore, the guide groove is an arc-shaped groove, the exhaust hole is a waist-shaped hole, and the plurality of waist-shaped holes are arranged at intervals along the extension direction of the arc-shaped groove.

[0014] Furthermore, there are multiple exhaust holes, and the central angle of each exhaust hole is A n , the sum of the central angles A of all exhaust holes is less than or equal to 90°.

[0015] Furthermore, the volume V1 of the exhaust groove and the exhaust volume V of the pump body assembly satisfy V1≤0.05V.

[0016] Furthermore, the cross-sectional area S2 of the exhaust groove is greater than or equal to 0.5 mm 2 And less than or equal to 100mm 2 .

[0017] Furthermore, the exhaust structure further includes: a guide hole, the guide hole is communicated with the guide groove, and the guide hole extends to two opposite end surfaces of the flange.

[0018] Furthermore, the flange has an air inlet hole, and the air inlet hole is spaced apart from the exhaust structure.

[0019] According to another aspect of the present invention, a vane compressor is provided, comprising a housing and a pump body assembly located in the housing, wherein the pump body assembly is the above-mentioned pump body assembly.

[0020] By applying the technical solution of the present invention, during the operation of the pump body assembly, the rotating shaft rotates so that the rotor part and the vane compress the gas in the cylinder, and the gas in the compression chamber of the cylinder enters the guide groove through the exhaust groove, enters the exhaust hole through the guide groove, and is discharged to the outside of the pump body assembly through the exhaust hole. In this way, the exhaust structure includes a guide groove and an exhaust hole connected to the guide groove. In the process of gas entering the exhaust structure, the gas first enters the guide groove and enters the exhaust hole through the guide groove. The exhaust hole extends from the bottom of the guide groove to the end face of the flange. The exhaust hole replaces the annular hole of the pump body assembly in the prior art, thereby solving the problem of the low structural strength of the flange in the prior art affecting the normal operation of the vane compressor, improving the structural strength of the flange, extending the service life of the flange, ensuring the normal use of the pump body assembly, and improving the operational reliability of the pump body assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 An exploded view of a first embodiment of a pump assembly according to the present invention is shown;

[0023] Figure 2 Shown Figure 1 A top view of the pump assembly in FIG.

[0024] Figure 3 Shown Figure 2 An enlarged schematic diagram of point B of the pump assembly;

[0025] Figure 4 Shown Figure 1 The main view of the flange of the pump body assembly (bottom view of the upper flange);

[0026] Figure 5 Shown Figure 4 The CC section view of the flange;

[0027] Figure 6 Shown Figure 1 A schematic diagram of the three-dimensional structure of the flange of the pump body assembly;

[0028] Figure 7 Shown Figure 6 A front view of the exhaust structure of the pump assembly;

[0029] Figure 8 Shown Figure 1 A schematic diagram of the three-dimensional structure of the rotating shaft of the pump body assembly;

[0030] Figure 9 Shown Figure 8 A top view of the rotating shaft in FIG;

[0031] Figure 10 A curve showing the relationship between the longitudinal cross-sectional area S1 of the guide groove and the energy efficiency of the pump assembly according to the first embodiment of the present invention is shown;

[0032] Figure 11 A curve showing the relationship between the cross-sectional area S2 of the exhaust groove and the exhaust loss of the pump body assembly according to the first embodiment of the present invention is shown;

[0033] Figure 12 A front view showing a flange of a second embodiment of a pump assembly according to the present invention; and

[0034] Figure 13 Shown Figure 12 Schematic diagram of the three-dimensional structure of the flange.

[0035] The above drawings include the following reference numerals:

[0036] 10. Flange; 11. Through hole; 12. Air inlet; 13. Upper flange; 14. Lower flange; 15. Oil storage tank; 20. Cylinder; 21. Compression chamber; 22. Exhaust chamber; 23. Intake chamber; 30. Rotating shaft; 31. Rotor part; 311. Exhaust groove; 312. Vane groove; 32. Long axis section; 33. Short axis section; 40. Vane; 50. Exhaust structure; 51. Guide groove; 52. Exhaust hole; 53. Guide hole. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0039] In the present invention, unless otherwise specified, directional words such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0040] In order to solve the problem in the prior art that the structural strength of the flange is low and thus affects the normal operation of the vane compressor, the present application provides a pump body assembly and a vane compressor having the same.

[0041] Example 1

[0042] like Figure 1 and Figure 2 As shown, the pump body assembly includes a flange 10, a cylinder 20, a rotating shaft 30, and three slides 40. The slides 40 are slidably disposed on the rotor portion 31 of the rotating shaft 30. The rotor portion 31 is located in the cylinder 20. The pump body assembly also includes an exhaust structure 50. The exhaust structure 50 is disposed on the flange 10 and includes a guide groove 51 and an exhaust hole 52 connected to the guide groove 51. The exhaust hole 52 extends from the bottom of the guide groove 51 to the end surface of the flange 10. The rotor portion 31 has an exhaust groove 311. During the rotation of the rotating shaft 30, the gas in the compression chamber 21 of the cylinder 20 enters the guide groove 51 through the exhaust groove 311, enters the exhaust hole 52 through the guide groove 51, and is discharged to the outside of the pump body assembly through the exhaust hole 52.

[0043] According to the technical solution of this embodiment, during operation of the pump assembly, the rotating shaft 30 rotates, causing the rotor portion 31 and the vane 40 to compress the gas within the cylinder 20. Gas within the compression chamber 21 of the cylinder 20 then enters the guide groove 51 via the exhaust groove 311, enters the exhaust hole 52 through the guide groove 51, and is discharged outside the pump assembly through the exhaust hole 52. Thus, the exhaust structure 50 includes the guide groove 51 and the exhaust hole 52 connected to the guide groove 51. During the process of gas entering the exhaust structure 50, the gas first enters the guide groove 51, then enters the exhaust hole 52 through the guide groove 51. The exhaust hole 52 extends from the bottom of the guide groove 51 to the end face of the flange 10. The exhaust hole 52 replaces the annular hole of the pump assembly in the prior art, thereby resolving the problem of the low structural strength of the flange in the prior art affecting the normal operation of the vane compressor, improving the structural strength of the flange 10, extending the service life of the flange 10, ensuring the normal use of the pump assembly, and improving the operational reliability of the pump assembly.

[0044] like Figure 1 As shown, flange 10 comprises an upper flange 13 and a lower flange 14. In this embodiment, both upper and lower flanges 13 and 14 are provided with exhaust structures 50. This arrangement enhances the structural strength of the journals of upper and lower flanges 13 and 14, optimizes processability, and reduces the difficulty of quality control for mass-produced parts. Furthermore, this arrangement improves the operational reliability and service life of upper and lower flanges 13 and 14, reduces power consumption of the pump assembly, and enhances the overall performance of the pump assembly.

[0045] like Figure 8 and Figure 9 As shown, exhaust grooves 311 are provided on the upper and lower end surfaces of the rotor portion 31. The rotating shaft 30 includes a long shaft section 32 and a short shaft section 33. The long shaft section 32 and the short shaft section 33 are connected by the rotor portion 31. The long shaft section 32 passes through the journal of the upper flange 13, and the short shaft section 33 passes through the journal of the lower flange 14. The rotor portion 31 is located in the cylinder 20, and a slide 40 is installed in each slide groove 312. The upper and lower flanges and the cylinder 20 are fixed together by screws. The rotating shaft 30 can rotate in the cylinder 20 under the support of the upper and lower flanges. At the same time, the slide 40 extends under the action of centrifugal force and back pressure, and approaches the inner wall of the cylinder 20, rotating with the rotor portion 31. When the rotating shaft 30 rotates to a specific angle (this angle is determined by the starting angle of the guide groove 51), the exhaust groove 311 is connected to the guide grooves 51 on the end faces of the upper and lower flanges, respectively, so that the gas in the compression chamber 21 enters the guide grooves 51 of the upper and lower flanges through the exhaust groove 311, and is then discharged to the outside of the pump body assembly through the exhaust holes 52 distributed on the guide groove 51.

[0046] In other embodiments not shown in the accompanying drawings, the exhaust structure is provided only on the upper flange. This arrangement strengthens the structural strength of the upper flange's journal, optimizes processability, and reduces the difficulty of quality control for mass-produced parts. Furthermore, this arrangement enhances the upper flange's operational reliability and service life, reduces the pump assembly's power consumption, and improves its overall performance.

[0047] In other embodiments not shown in the accompanying drawings, the exhaust structure is provided only on the lower flange. This arrangement strengthens the structural strength of the lower flange's journal, optimizes processability, and reduces the difficulty of quality control for mass-produced parts. Furthermore, this arrangement enhances the operational reliability and service life of the lower flange, reduces power consumption of the pump assembly, and improves the overall performance of the pump assembly.

[0048] like Figure 4 and Figure 6 As shown, the flange 10 has a through hole 11 for the rotating shaft 30 to pass through, and the guide groove 51 is an arc-shaped groove, the central axis of which is coaxial with the central axis of the through hole 11. This arrangement, on the one hand, makes the processing of the guide groove 51 easier and simpler, reducing the processing difficulty; on the other hand, it makes the radial and circumferential forces on the flange 10 more uniform, avoiding stress concentration in the guide groove 51 and affecting the structural strength of the flange 10.

[0049] like Figure 4 and Figure 6 As shown, the flange 10 also has an oil reservoir 15. In this way, during the operation of the pump assembly, the lubricating medium in the oil reservoir 15 can lubricate the flange 10 and the rotor portion 31, reducing structural wear during the operation of the pump assembly.

[0050] like Figures 2 to 7 As shown, the orthographic projection of the guide groove 51 on the end surface is a first projection, and the orthographic projection of the exhaust hole 52 on the end surface is a second projection, with the second projection being within the first projection. Specifically, the above-described configuration of the exhaust structure 50 allows the gas in the compression chamber 21 to first enter the guide groove 51, then pass through the exhaust hole 52 under the guidance of the guide groove 51, and be discharged to the outside of the pump body assembly through the exhaust hole 52. The exhaust hole 52 then extends from the guide groove 51 to the end surface of the flange 10 away from the cylinder 20, thereby increasing the structural strength of the flange 10.

[0051] Specifically, when processing the exhaust structure 50, the staff can first process the guide groove 51, and then process the exhaust hole 52 within the range of the guide groove 51. Compared with the annular hole of the pump body assembly in the prior art, in this embodiment, less material is removed from the flange 10 to form the exhaust structure 50, thereby increasing the structural strength of the flange 10.

[0052] Optionally, during the process of processing the exhaust structure 50, the staff can also first process the exhaust hole 52 and then process the guide groove 51. Compared with the annular hole of the pump body assembly in the prior art, in this embodiment, less material is removed from the flange 10 to form the exhaust structure 50, thereby increasing the structural strength of the flange 10.

[0053] Optionally, there are multiple exhaust holes 52, and the multiple exhaust holes 52 are spaced apart along the extending direction of the guide groove 51. Figure 4 、 Figure 6 and Figure 7 As shown, there are five exhaust holes 52, which are evenly spaced along the extension direction of the guide groove 51. While ensuring the exhaust volume of the pump body assembly, the number of exhaust holes 52 is minimized to increase the structural strength of the flange 10. At the same time, the above arrangement of the five exhaust holes 52 makes the force applied to the flange 10 more uniform and consistent, further extending the service life of the flange 10.

[0054] It should be noted that the number of the exhaust holes 52 is not limited to this, as long as it can meet the exhaust volume requirements of the pump body assembly. Optionally, the number of the exhaust holes 52 is two, three, four, or more.

[0055] It should be noted that the arrangement of the plurality of exhaust holes 52 is not limited thereto. Optionally, the plurality of exhaust holes 52 are arranged at intervals along the width direction D of the guide groove 51 .

[0056] Optionally, the vent holes 52 may be one or more of a circular hole, an elliptical hole, a polygonal hole, and a waist-shaped hole. In this embodiment, all five vent holes 52 are waist-shaped holes. This arrangement, on the one hand, facilitates and simplifies the machining of the vent holes 52, reducing the machining difficulty; on the other hand, it prevents stress concentration on the vent holes 52, which could affect the structural strength of the flange 10. Furthermore, the waist-shaped holes enhance the structural strength of the flange journal while ensuring smooth exhaust.

[0057] It should be noted that the shape and combination of the exhaust holes 52 are not limited thereto, as long as the exhaust volume can be satisfied.

[0058] like Figure 7 As shown, the guide groove 51 is an arc-shaped groove, and the central angle A0 of the arc-shaped groove is greater than or equal to 5° and less than or equal to 150°. In this way, the above angle setting ensures that the pump body assembly has sufficient exhaust volume and improves the operating performance of the pump body assembly; at the same time, it prevents the central angle A0 from being too large, which may affect the structural strength of the flange 10.

[0059] Specifically, the central angle A0 of the arc-shaped groove is set according to the actual working condition of the pump body assembly. The angle range of the central angle A0 is large under light working conditions, and the angle range of the central angle A0 is small under heavy working conditions.

[0060] like Figure 5 As shown, the groove depth h of the guide groove 51 and the thickness H of the flange 10 meet Specifically, along the thickness direction of the flange 10, the groove depth h of the guide groove 51 and the thickness H of the flange 10 meet the above numerical requirements, ensuring that the guide groove 51 can guide a certain volume of gas and ensure the exhaust volume of the pump body assembly.

[0061] Specifically, if the groove depth h of the guide groove 51 is too large, the structural strength of the flange 10 at this location will be reduced, affecting the service life of the flange 10.

[0062] Optionally, the longitudinal cross-sectional area S1 of the guide groove 51 is greater than or equal to 1 mm 2 And less than or equal to 100mm 2 Specifically, the longitudinal section is arranged along the extension direction of the guide groove 51 and is perpendicular to the two end faces of the flange 10. In this way, the above arrangement ensures that the guide groove 51 can guide a certain volume of gas, further ensuring the exhaust volume of the pump body assembly.

[0063] In this embodiment, the relationship curve between the longitudinal cross-sectional area S1 of the guide groove 51 and the energy efficiency of the pump assembly is as follows: Figure 10 As shown, from Figure 10 It can be concluded that if the longitudinal cross-sectional area S1 is too small, the energy efficiency of the pump assembly is low and the operating performance is poor.

[0064] Optionally, the longitudinal cross-sectional area S1 of the guide groove 51 is greater than or equal to 3 mm 2 and less than or equal to 40mm 2 In this way, under the premise of ensuring that the pump body assembly has a preset exhaust volume, the above numerical limit enables the flange 10 to have a better structural strength, thereby extending the service life and operational reliability of the pump body assembly.

[0065] Specifically, the longitudinal cross-sectional area S1 = D×h. If the longitudinal cross-sectional area S1 is too small, the gas in the compression chamber 21 cannot be discharged into the guide groove 51 in time, causing the operating condition of the pump assembly to worsen and the performance of the pump assembly to deteriorate.

[0066] like Figures 2 to 7 As shown, the exhaust holes 52 are waist-shaped holes, and a plurality of waist-shaped holes are spaced apart along the extending direction of the arc groove. In this way, the above arrangement not only makes the appearance of the flange 10 more beautiful, but also makes the force applied to the flange 10 more uniform and consistent, thereby extending the service life of the flange 10.

[0067] In this embodiment, the arc-shaped groove has a center plane, and the waist-shaped holes are symmetrically arranged about the center plane.

[0068] In this embodiment, the central angle of each exhaust hole 52 is A n, the sum of the central angles A of all the exhaust holes 52 is less than or equal to 90°. Figure 1 As shown, the central angle of the first exhaust hole 52 is A1, the central angle of the second exhaust hole 52 is A2, and the central angle of the third exhaust hole 52 is A3, then A=A1+A2+A3, and A≤90° is satisfied, so as to limit the distance between two adjacent exhaust holes 52 and avoid turbulence or airflow fluctuation caused by concentrated exhaust from the five exhaust holes 52.

[0069] In this embodiment, the cross-sectional area of ​​the five exhaust holes 52 is not too small, and the total cross-sectional area of ​​the five exhaust holes 52 is greater than or equal to 1 mm. 2 And less than or equal to 100mm 2 , thereby ensuring that the gas can be discharged in time.

[0070] In this embodiment, there are three exhaust grooves 311, and the volume V1 of each exhaust groove 311 satisfies V1≤0.05V with the exhaust volume V of the pump body assembly. Specifically, the two end surfaces of the rotor portion 31 each have three exhaust grooves 311. When the rotating shaft 30 rotates to a set angle, the exhaust grooves 311 on the two end surfaces of the rotor portion 31 communicate with the guide grooves 51 of the upper and lower flanges, discharging high-pressure gas into the guide grooves 51. When the rotating shaft 30 rotates through the guide grooves 51 and enters the suction chamber 23, the exhaust grooves 311 communicate with the suction chamber 23. The high-pressure gas remaining in the exhaust grooves 311 will become the existence of clearance volume, affecting the operating performance of the pump body assembly. Therefore, the volume V1 of the exhaust grooves 311 also needs to be limited, and needs to satisfy V1≤0.05V.

[0071] Optionally, the cross-sectional area S2 of each exhaust groove 311 is greater than or equal to 0.5 mm 2 And less than or equal to 100mm 2 Specifically, the relationship between the cross-sectional area S2 and the exhaust loss is shown in the figure below: Figure 11 As shown, from Figure 11 It can be concluded that if the cross-sectional area S2 is too small, exhaust will not be smooth, and if the cross-sectional area S2 is too large, the exhaust loss will be large and the working efficiency of the pump assembly will be low.

[0072] Optionally, the cross-sectional area S2 of the exhaust groove 311 is greater than or equal to 6 mm 2 and less than or equal to 40mm 2 .

[0073] like Figure 2 and Figure 6 As shown, flange 10 has an air inlet 12 spaced apart from exhaust structure 50. This allows gas outside the pump assembly to enter cylinder 20 through air inlet 12, thereby completing the pump assembly's intake. This arrangement also prevents interference between intake and exhaust, improving the pump assembly's operational reliability.

[0074] The present application also provides a vane compressor (not shown), comprising a housing and a pump body assembly located in the housing, wherein the pump body assembly is the above-mentioned pump body assembly.

[0075] Example 2

[0076] The difference between the pump body assembly in the second embodiment and that in the first embodiment is that the structure of the exhaust structure 50 is different.

[0077] like Figure 12 and Figure 13 As shown, the exhaust structure 50 further includes a guide hole 53. The guide hole 53 is connected to the guide groove 51 and extends to two opposite end surfaces of the flange 10. Specifically, during operation of the pump assembly, the rotating shaft 30 rotates, causing the rotor portion 31 and the vane 40 to compress the gas within the cylinder 20. Gas within the compression chamber 21 of the cylinder 20 can then enter the guide groove 51 via the exhaust groove 311, and then enter the exhaust hole 52 through the guide groove 51, and be discharged to the outside of the pump assembly through the exhaust hole 52. Alternatively, the gas can directly enter the guide hole 53 and be discharged to the outside of the pump assembly through the guide hole 53. In this way, the exhaust structure 50 includes a guide groove 51, an exhaust hole 52 and a guide hole 53. The exhaust hole 52 and the guide hole 53 replace the annular hole of the pump body assembly in the prior art, thereby solving the problem that the structural strength of the flange in the prior art is low and affects the normal operation of the vane compressor, improving the structural strength of the flange 10, extending the service life of the flange 10, ensuring that the pump body assembly can be used normally, and improving the operating reliability of the pump body assembly.

[0078] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0079] During the operation of the pump body assembly, the rotating shaft rotates so that the rotor and the vane compress the gas in the cylinder. The gas in the compression chamber of the cylinder enters the guide groove through the exhaust groove, enters the exhaust hole through the guide groove, and is discharged to the outside of the pump body assembly through the exhaust hole. In this way, the exhaust structure includes a guide groove and an exhaust hole connected to the guide groove. In the process of gas entering the exhaust structure, the gas first enters the guide groove and then enters the exhaust hole through the guide groove. The exhaust hole extends from the bottom of the guide groove to the end face of the flange. The exhaust hole replaces the annular hole of the pump body assembly in the prior art, thereby solving the problem of the low structural strength of the flange in the prior art affecting the normal operation of the vane compressor, improving the structural strength of the flange, extending the service life of the flange, ensuring the normal use of the pump body assembly, and improving the operational reliability of the pump body assembly.

[0080] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0082] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0083] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pump assembly comprising a flange (10), a cylinder (20), a rotating shaft (30) and a plurality of slides (40), wherein the slides (40) are slidably arranged on a rotor portion (31) of the rotating shaft (30), and the rotor portion (31) is located in the cylinder (20), characterized in that: The pump assembly further comprises: An exhaust structure (50) is provided on the flange (10), the exhaust structure (50) comprising a guide groove (51) and an exhaust hole (52) communicating with the guide groove (51), the exhaust hole (52) extending from the bottom of the guide groove (51) to the end surface of the flange (10); The rotor portion (31) has an exhaust groove (311), and during the rotation of the rotating shaft (30), the gas in the compression chamber (21) of the cylinder (20) enters the guide groove (51) through the exhaust groove (311), enters the exhaust hole (52) through the guide groove (51), and is discharged to the outside of the pump body assembly through the exhaust hole (52); The groove depth h of the guide groove (51) and the thickness H of the flange (10) satisfy There are a plurality of exhaust holes (52), and the plurality of exhaust holes (52) are arranged at intervals along the extension direction of the guide groove (51); The guide groove (51) is an arc-shaped groove having a center plane, and the exhaust holes (52) are symmetrically arranged about the center plane.

2. The pump assembly according to claim 1, characterized in that The flange (10) has a through hole (11) for the rotating shaft (30) to pass through, and the guide groove (51) is an arc-shaped groove, and the central axis of the arc-shaped groove is coaxially arranged with the central axis of the through hole (11).

3. The pump assembly according to claim 1, characterized in that The orthographic projection of the guide groove (51) on the end surface is a first projection, and the orthographic projection of the exhaust hole (52) on the end surface is a second projection, and the second projection is within the first projection.

4. The pump assembly according to claim 1, characterized in that The exhaust hole (52) is one or more of a circular hole, an elliptical hole, a polygonal hole and a waist-shaped hole.

5. The pump assembly according to claim 1, characterized in that The guide groove (51) is an arc-shaped groove, and the central angle A0 of the arc-shaped groove is greater than or equal to 5° and less than or equal to 150°.

6. The pump assembly according to claim 1, characterized in that The longitudinal cross-sectional area S1 of the guide groove (51) is greater than or equal to 1 mm 2 And less than or equal to 100mm 2 .

7. The pump assembly according to claim 1, characterized in that The exhaust holes (52) are waist-shaped holes, and a plurality of the waist-shaped holes are arranged at intervals along the extending direction of the arc-shaped groove.

8. The pump assembly according to claim 7, characterized in that There are multiple exhaust holes (52), and the central angle of each exhaust hole (52) is A n The sum A of the central angles of all the exhaust holes (52) is less than or equal to 90°.

9. The pump assembly according to claim 7, characterized in that: The volume V1 of the exhaust groove (311) and the exhaust volume V of the pump body assembly satisfy V1≤0.05V.

10. The pump assembly according to claim 7, wherein: The cross-sectional area S2 of the exhaust groove (311) is greater than or equal to 0.5 mm 2 And less than or equal to 100mm 2 .

11. The pump assembly according to claim 7, wherein: The exhaust structure (50) further includes: A flow guide hole (53), the flow guide hole (53) is communicated with the flow guide groove (51), and the flow guide hole (53) extends to two opposite end surfaces of the flange (10).

12. The pump assembly according to claim 7, wherein: The flange (10) has an air inlet (12), and the air inlet (12) is spaced apart from the exhaust structure (50).

13. A vane compressor comprising a housing and a pump assembly located in the housing, characterized in that: The pump body assembly is the pump body assembly according to any one of claims 1 to 12.

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