Pump body assembly, rotary compressor and air conditioner

Abstract

The present invention provides a pump body assembly, a rotary compressor and an air conditioner. The pump body assembly includes a cylinder, a roller and a sliding vane. The cylinder has a compression chamber. The roller is rotatably disposed in the compression chamber along the inner wall surface of the compression chamber. The sliding vane is slidably engaged with the cylinder to keep in contact with the surface of the roller. The roller and the sliding vane together divide the compression chamber into a first chamber section and a second chamber section. The cylinder is provided with an air inlet communicating with the first chamber section and an air outlet communicating with the second chamber section. An air suction groove is provided on the inner wall surface of the compression chamber of the cylinder. The air suction groove is spaced from the air inlet, and the air suction groove is communicated with the air inlet through a connecting channel. The pump body assembly of the present invention solves the problem of large air suction loss in the existing rotary compressor.

Description

Technical Field

[0001] The present invention relates to the field of rotary compressors, and in particular, to a pump body assembly, a rotary compressor and an air conditioner. Background Art

[0002] Rotary compressors have the advantages of simple structure, low cost, good reliability, etc., and are more and more widely used in fields such as refrigeration systems and heat pump water heaters.

[0003] At present, the suction resistance of the cylinder of a rotary compressor during the suction process is relatively large, resulting in a large suction loss of the rotary compressor, thereby reducing the energy efficiency of the rotary compressor. Summary of the Invention

[0004] The main object of the present invention is to provide a pump body assembly, a rotary compressor and an air conditioner to solve the problem of large suction loss of the rotary compressor in the prior art.

[0005] To achieve the above object, according to the first aspect of the present invention, a pump body assembly is provided. The pump body assembly includes a cylinder, a roller and a sliding vane. The cylinder has a compression chamber. The roller is disposed in the compression chamber so as to be rollable along the inner wall surface of the compression chamber. The sliding vane is slidably engaged with the cylinder to keep in contact with the surface of the roller. The roller and the sliding vane together divide the compression chamber into a first chamber section and a second chamber section. The cylinder is provided with a suction port communicating with the first chamber section and an exhaust port communicating with the second chamber section. An air suction groove is provided on the inner wall surface of the compression chamber of the cylinder. The air suction groove is spaced from the suction port, and the air suction groove is communicated with the suction port through a connecting channel.

[0006] Further, the compression chamber extends to opposite two end faces of the cylinder. The pump body assembly further includes a first housing and a second housing, and the first housing and the second housing are connected to the two end faces of the cylinder in a one-to-one correspondence to separate the compression chamber from the external space. The air suction groove extends to one end face of the cylinder, and the air suction groove is spaced from the other end face of the cylinder.

[0007] Further, there are two air suction grooves, and the two air suction grooves extend to the two end faces of the cylinder in a one-to-one correspondence.

[0008] Further, the groove surface of the air suction groove is an arc surface, and the arc surface extends to the inner wall surface of the compression chamber and the corresponding end face.

[0009] Further, the groove surface of the air suction groove and the corresponding end face form a boundary line, and along the rolling direction of the roller, the curvature of the boundary line gradually becomes smaller.

[0010] Further, the groove surface of the air suction groove includes a side surface and a bottom surface. The side surface extends along the axial direction of the compression chamber, and the bottom surface is perpendicular to the axial direction of the compression chamber.

[0011] Further, the connecting channel is a communication hole provided on the cylinder.

[0012] Further, the connection channel includes a transition hole and a transition groove. Both the transition hole and the transition groove are provided on the cylinder. The transition hole communicates with the suction port and extends to the end face corresponding to the suction groove. The transition groove is provided on the end face corresponding to the suction groove, and the transition groove communicates the transition hole with the suction groove.

[0013] Further, the suction port includes a first hole section and a second hole section. The first hole section communicates with the compression chamber, and the second hole section communicates the first hole section with the outer wall of the cylinder. Wherein, the aperture of the second hole section is larger than that of the first hole section, and the transition hole communicates with the second hole section.

[0014] Further, the extending direction of the transition groove is inclined with respect to the radial direction of the compression chamber, so that the flow direction of the gas flowing from the suction groove into the compression chamber is consistent with the rolling direction of the roller.

[0015] Further, the suction port includes a first hole section and a second hole section. The first hole section communicates with the compression chamber, and the second hole section communicates the first hole section with the outer wall of the cylinder. Wherein, the aperture of the second hole section is larger than that of the first hole section, and the communication hole communicates with the second hole section.

[0016] According to a second aspect of the present invention, a rotary compressor is provided. The rotary compressor includes: a pump body assembly, which is the above-mentioned pump body assembly; a motor assembly for driving the roller of the pump body assembly to roll along the inner wall of the compression chamber; a liquid separator provided at the suction port of the pump body assembly for separating gaseous refrigerant from liquid refrigerant.

[0017] According to a third aspect of the present invention, an air conditioner is provided, and the air conditioner includes the above-mentioned rotary compressor.

[0018] The pump body assembly applying the technical solution of the present invention includes a cylinder, a roller and a sliding vane. The cylinder has a compression chamber. The roller is rollably arranged in the compression chamber along the inner wall surface of the compression chamber. The sliding vane is slidably matched with the cylinder to keep in contact with the surface of the roller. The roller and the sliding vane jointly divide the compression chamber into a first chamber section and a second chamber section. The cylinder is provided with a suction port communicating with the first chamber section and an exhaust port communicating with the second chamber section. An intake groove is provided on the inner wall surface of the compression chamber of the cylinder. The intake groove is spaced from the suction port, and the intake groove communicates with the suction port through a connection channel. In this way, by providing the intake groove communicating with the suction port, when supplying gas to the first chamber section inside the cylinder, the intake groove can play an auxiliary gas supply role, increase the cross-sectional area of the intake channel, reduce the intake resistance of the pump body assembly, and is beneficial to reducing the intake eddy current loss of the pump body assembly and improving the energy efficiency. Moreover, since the intake groove is spaced from the suction port, the influence on the structure near the suction port is small, and the problem of high-temperature deformation of the cylinder caused by the reduction of the structural strength near the suction port can be avoided, ensuring the working reliability of the pump body assembly. Description of the Drawings

[0019] The accompanying drawings of the specification, which form a part of the present application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic cross-sectional structure diagram of an embodiment of a pump body assembly according to the present invention is shown;

[0021] Figure 2 A schematic diagram showing the mating relationship among a cylinder, a roller, and a sliding vane of an embodiment of a pump body assembly according to the present invention is shown;

[0022] Figure 3 A schematic structure diagram of a cylinder, a first housing, and a second housing of an embodiment of a pump body assembly according to the present invention is shown;

[0023] Figure 4 An isometric schematic diagram of a cylinder of a first embodiment of a pump body assembly according to the present invention is shown;

[0024] Figure 5 A schematic top view structure diagram of a cylinder of a first embodiment of a pump body assembly according to the present invention is shown;

[0025] Figure 6 A schematic cross-sectional structure diagram of a cylinder of a first embodiment of a pump body assembly according to the present invention is shown;

[0026] Figure 7 A schematic top view structure diagram of a cylinder of a second embodiment of a pump body assembly according to the present invention is shown;

[0027] Figure 8 A schematic diagram showing the dimensional relationship between an air intake groove and an air intake port of a first embodiment of a pump body assembly according to the present invention is shown;

[0028] Figure 9 A schematic diagram showing the relationship between the depth dimension of an air intake groove and the wall thickness dimension of an air intake port of a first embodiment of a pump body assembly according to the present invention is shown;

[0029] Figure 10 A schematic cross-sectional structure diagram of a cylinder of a third embodiment of a pump body assembly according to the present invention is shown;

[0030] Figure 11 A schematic top view structure diagram of a cylinder of a fourth embodiment of a pump body assembly according to the present invention is shown;

[0031] Figure 12 A schematic cross-sectional structure diagram of a cylinder of a fourth embodiment of a pump body assembly according to the present invention is shown;

[0032] Figure 13Shows a schematic cross-sectional structure diagram of a cylinder of a fifth embodiment of a pump body assembly according to the present invention;

[0033] Figure 14 Shows a schematic top view structure diagram of a cylinder of a sixth embodiment of a pump body assembly according to the present invention;

[0034] Figure 15 Shows a schematic structure diagram of an embodiment of a rotary compressor according to the present invention.

[0035] Wherein, the above-mentioned drawings include the following reference numerals:

[0036] 1. Cylinder; 10. Compression chamber; 101. First chamber section; 102. Second chamber section; 11. End face; 13. Suction groove; 14. Communication hole; 15. Transition hole; 16. Transition groove; 20. Suction port; 201. First hole section; 202. Second hole section; 2. Roller; 3. Sliding vane; 4. First housing; 5. Second housing; 100. Pump body assembly; 200. Motor assembly; 300. Liquid distributor. Detailed implementation manners

[0037] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] Please refer to Figures 1 to 14 , the present invention provides a pump body assembly, the pump body assembly includes a cylinder 1, a roller 2 and a sliding vane 3, the cylinder 1 has a compression chamber 10, the roller 2 is arranged in the compression chamber 10 so as to be rollable along the inner wall surface of the compression chamber 10, the sliding vane 3 is slidably matched with the cylinder 1 to keep in contact with the surface of the roller 2; the roller 2 and the sliding vane 3 jointly divide the compression chamber 10 into a first chamber section 101 and a second chamber section 102; the cylinder 1 is provided with a suction port 20 communicating with the first chamber section 101 and an exhaust port communicating with the second chamber section 102; an suction groove 13 is arranged on the inner wall surface of the compression chamber 10 of the cylinder 1, the suction groove 13 is arranged at an interval from the suction port 20, and the suction groove 13 is communicated with the suction port 20 through a connecting channel.

[0039] The sliding vane 3 of the pump body assembly is pressed against the surface of the roller 2 by a spring, so that the sliding vane 3 and the roller 2 always keep in contact. During the process of the roller 2 rolling along the inner wall of the compression chamber 10, the volumes of the first chamber section 101 and the second chamber section 102 change periodically, so as to realize actions such as suction, compression and exhaust.

[0040] The pump body assembly of the present invention includes a cylinder 1, a roller 2, and a sliding vane 3. The cylinder 1 has a compression chamber 10. The roller 2 is rotatably arranged in the compression chamber 10 along the inner wall surface of the compression chamber 10. The sliding vane 3 is slidably engaged with the cylinder 1 to keep in contact with the surface of the roller 2. The roller 2 and the sliding vane 3 together divide the compression chamber 10 into a first chamber section 101 and a second chamber section 102. The cylinder 1 is provided with an air inlet 20 communicating with the first chamber section 101 and an air outlet communicating with the second chamber section 102. An air suction groove 13 is provided on the inner wall surface of the compression chamber 10 of the cylinder 1. The air suction groove 13 is spaced from the air inlet 20, and the air suction groove 13 is communicated with the air inlet 20 through a connecting channel. In this way, by providing the air suction groove 13 communicating with the air inlet 20, when supplying air to the first chamber section 101 inside the cylinder 1, the air suction groove 13 can play an auxiliary air supply role, increase the cross-sectional area of the air suction channel, reduce the air suction resistance of the pump body assembly, be beneficial to reducing the air suction eddy current loss of the pump body assembly, and improve the energy efficiency. Moreover, since the air suction groove 13 is spaced from the air inlet 20, it has little influence on the structure near the air inlet 20, and can avoid the problem of high-temperature deformation of the cylinder 1 caused by the reduction of the structural strength near the air inlet 20, ensuring the working reliability of the pump body assembly.

[0041] As Figures 4 to 14 shown, in order to facilitate the machining of the air suction groove 13, the compression chamber 10 extends to two opposite end faces 11 of the cylinder 1. The pump body assembly further includes a first housing 4 and a second housing 5. The first housing 4 and the second housing 5 are connected to the two end faces 11 of the cylinder 1 in a one-to-one correspondence to separate the compression chamber 10 from the external space. The air suction groove 13 extends to one end face 11 of the cylinder 1, and the air suction groove 13 is spaced from the other end face 11 of the cylinder 1.

[0042] Since the air suction groove 13 is provided on one end face 11 of the cylinder 1 and extends to the inner wall surface of the compression chamber 10, and it is spaced from the other end face 11, the machining is relatively convenient. Only a cutting operation needs to be performed on one end face 11 of the cylinder 1. The manufacturing process is simple, and it has little influence on the structure of the cylinder 1, and can ensure the structural strength of the cylinder 1.

[0043] Of course, in addition to this embodiment, the air suction groove 13 can also be other types of structures. For example, the air suction groove 13 is a groove provided on the inner wall surface of the compression chamber 10 of the cylinder 1, and the air suction groove 13 is spaced from both end faces 11 of the cylinder 1. It can also increase the cross-sectional area of the air suction channel, but the machining may be more difficult.

[0044] In order to further reduce the air suction resistance, there are two air suction grooves 13, and the two air suction grooves 13 extend to the two end faces 11 of the cylinder 1 in a one-to-one correspondence.

[0045] In specific implementation, there can be various choices for the groove surface of the air suction groove 13:

[0046] In one embodiment, as Figures 4 to 12 shown, the groove surface of the suction groove 13 is an arc surface, and the arc surface extends to the inner wall surface and the corresponding end surface 11 of the compression chamber 10.

[0047] By setting the groove surface of the suction groove 13 as an arc surface, it is beneficial to reduce the resistance of the gas flowing at the suction groove 13, and thus helpful for reducing the suction eddy current. Preferably, the arc surface is a part of a cylindrical surface. In this way, during processing, only a milling cutter or the like needs to be used to mill obliquely relative to the end surface 11 of the cylinder 1, which can effectively facilitate the processing operation.

[0048] In another embodiment, as Figure 13 shown, the groove surface of the suction groove 13 includes a side surface and a bottom surface. The side surface extends along the axial direction of the compression chamber 10, and the bottom surface is perpendicular to the axial direction of the compression chamber 10.

[0049] At this time, the suction groove 13 is a sunk groove structure, that is, the groove surface of the suction groove 13 includes a side surface and a bottom surface arranged at a predetermined angle to the side surface. At this time, the groove surface of the suction groove 13 is a part of the surface of a columnar structure. Adopting this structural design can further facilitate the processing operation of the suction groove 13.

[0050] As Figure 7 and Figure 14 shown, the groove surface of the suction groove 13 and the corresponding end surface form a boundary line. Along the rolling direction of the roller 2, the curvature of the boundary line gradually becomes smaller.

[0051] By adopting this structural setting, the suction groove 13 is a non-centered structure. Along the direction of the gas entering the compression chamber 10 of the cylinder 1, the gas flow path becomes shorter, making the gas flow more stable and smooth, which is beneficial to reducing the suction resistance of the pump body structure and improving the volumetric efficiency of the pump body structure.

[0052] For the structure of the connecting channel, there can also be various choices in specific implementation:

[0053] In an alternative scheme, as Figures 4 to 9 shown, the connecting channel is a communication hole 14 provided on the cylinder 1.

[0054] By adopting the communication hole 14, it is relatively convenient to connect the suction groove 13 with the suction port 20, which is beneficial to simplifying the processing and manufacturing of the pump body assembly.

[0055] During actual implementation, as Figure 8 and Figure 9 shown, the width d of the suction groove 13 can be adjusted according to the range of the width a of the suction port 20, the depth e of the suction groove 13 can be adjusted according to the wall thickness b of the suction port 20 of the cylinder 1, and the diameter of the communication hole 14 can be selected and designed according to the compressor displacement.

[0056] In another alternative solution, as Figures 10 to 14 shown, the connecting channel includes a transition hole 15 and a transition groove 16. Both the transition hole 15 and the transition groove 16 are provided on the cylinder 1. The transition hole 15 communicates with the suction port 20 and extends to the end face 11 corresponding to the suction groove 13. The transition groove 16 is provided on the end face 11 corresponding to the suction groove 13, and the transition groove 16 communicates the transition hole 15 with the suction groove 13.

[0057] By providing the transition hole 15 to connect the suction port 20 with the end face of the cylinder 1, and then providing the transition groove 16 on the end face of the cylinder 1 to communicate the transition hole 15 with the suction groove 13, the processing operation of the pump body assembly can be effectively simplified, and it is beneficial to improve the structural strength of the cylinder 1. Specifically, if the communication hole 14 is directly used to communicate the suction groove 13 with the suction port 20, the communication hole 14 may need to be set as an inclined structure due to the positional relationship between the suction groove 13 and the suction port 20, which will increase the manufacturing difficulty. Since the suction groove 13 is located at the inner wall of the compression chamber 10 of the cylinder 1, if the communication hole 14 is directly provided on the cylinder 1, the communication hole 14 will also be near the inner wall of the compression chamber 10 of the cylinder 1, which will reduce the structural strength of the cylinder 1, make the rigidity near the suction port 20 of the cylinder 1 poor, and it is easy to have the problem of high-temperature deformation when the cylinder 1 is working, affecting the normal operation of the pump body assembly.

[0058] As Figures 11 to 13 shown, the suction port 20 includes a first hole section 201 and a second hole section 202. The first hole section 201 communicates with the compression chamber 10, and the second hole section 202 communicates the first hole section 201 with the outer wall of the cylinder 1. Among them, the aperture of the second hole section 202 is larger than that of the first hole section 201, and the transition hole 15 communicates with the second hole section 202.

[0059] By communicating the transition hole 15 with the second hole section 202, air can be introduced from the second hole section 202, increasing the cross-sectional area of gas flow, making the suction of the pump body assembly smoother, and reducing the suction resistance. Since the transition hole 15 is used to connect the suction port 20 with the end face of the cylinder 1, and then the transition groove 16 provided on the end face of the cylinder 1 is used to communicate the transition hole 15 with the suction groove 13, the transition groove 16 can conveniently realize the gas transmission over a long distance, meet the communication requirements, and is relatively convenient to process.

[0060] In this embodiment, as Figure 14 shown, the extending direction of the transition groove 16 is inclined with respect to the radial direction of the compression chamber 10, so that the flow direction of the gas flowing from the suction groove 13 into the compression chamber 10 is consistent with the rolling direction of the roller 2.

[0061] That is to say, the included angle between the extending direction of the transition groove 16 and the tangent line of the compression chamber 10 at the air suction groove 13 is not equal to 90°. Assuming that the roller 2 rolls counterclockwise in the compression chamber 10, after the air flow entering the air suction groove 13 from the transition groove 16 is ejected through the air suction groove 13, it also flows counterclockwise in the compression chamber 10.

[0062] In another embodiment, the air suction port 20 includes a first hole section 201 and a second hole section 202. The first hole section 201 communicates with the compression chamber 10, and the second hole section 202 communicates the first hole section 201 with the outer wall of the cylinder 1; wherein, the aperture of the second hole section 202 is larger than that of the first hole section 201, and the communication hole 14 communicates with the second hole section 202. That is, by directly connecting the second hole section 202 with the air suction groove 13 through the communication hole 14, the cross-sectional area of gas flow can also be increased, making the air suction of the pump body assembly smoother and reducing the air suction resistance, but the processing difficulty may be relatively large.

[0063] As Figure 15 shown, the present invention also provides a rotary compressor, which includes: a pump body assembly 100, and the pump body assembly 100 is the above-mentioned pump body assembly; a motor assembly 200, and the motor assembly 200 is used to drive the roller 2 of the pump body assembly 100 to roll along the inner wall of the compression chamber 10; a liquid separator 300, which is arranged at the air suction port 20 of the pump body assembly 100 and is used to separate the gaseous refrigerant from the liquid refrigerant.

[0064] The pump body assembly 100 includes a crankshaft, and the roller 2 is installed on the crankshaft. The motor assembly 200 drives the crankshaft to rotate, thereby driving the roller 2 to roll along the inner wall of the compression chamber 10.

[0065] In addition, the present invention also provides an air conditioner, and the air conditioner includes the above-mentioned rotary compressor.

[0066] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0067] The pump body assembly of the present invention includes a cylinder 1, a roller 2, and a sliding vane 3. The cylinder 1 has a compression chamber 10. The roller 2 is disposed within the compression chamber 10 so as to be rollable along the inner wall surface of the compression chamber 10. The sliding vane 3 is slidably engaged with the cylinder 1 to maintain contact with the surface of the roller 2. The roller 2 and the sliding vane 3 jointly divide the compression chamber 10 into a first chamber section 101 and a second chamber section 102. An air inlet 20 communicating with the first chamber section 101 and an air outlet communicating with the second chamber section 102 are provided on the cylinder 1. An air suction groove 13 is provided on the inner wall surface of the compression chamber 10 of the cylinder 1. The air suction groove 13 is spaced from the air inlet 20, and the air suction groove 13 communicates with the air inlet 20 through a connection channel. In this way, by providing the air suction groove 13 communicating with the air inlet 20, when supplying air to the first chamber section 101 inside the cylinder 1, the air suction groove 13 can play a role in assisting air supply, increasing the cross-sectional area of the air suction channel, reducing the air suction resistance of the pump body assembly, being beneficial to reducing the air suction eddy current loss of the pump body assembly, and improving energy efficiency. Moreover, since the air suction groove 13 is spaced from the air inlet 20, the influence on the structure near the air inlet 20 is small, and it is possible to avoid the problem of high-temperature deformation of the cylinder 1 caused by the reduction of the structural strength near the air inlet 20, ensuring the working reliability of the pump body assembly.

[0068] For ease of description, spatial relative terms, such as "above", "on top of", "on the upper surface", "above", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" other devices or structures will then be positioned "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientation of "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and corresponding interpretations of the spatial relative descriptions used herein will be made.

[0069] 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 forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the features, steps, operations, devices, components, and / or combinations thereof.

[0070] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0071] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pump body assembly, characterized in that, the pump body assembly includes a cylinder (1), a roller (2) and a sliding vane (3). The cylinder (1) has a compression chamber (10). The roller (2) is rollably arranged in the compression chamber (10) along the inner wall surface of the compression chamber (10). The sliding vane (3) is slidably matched with the cylinder (1) to keep in contact with the surface of the roller (2). The roller (2) and the sliding vane (3) jointly divide the compression chamber (10) into a first chamber section (101) and a second chamber section (102). An air inlet (20) communicating with the first chamber section (101) and an exhaust port communicating with the second chamber section (102) are provided on the cylinder (1); an air intake groove (13) is provided on the inner wall surface of the compression chamber (10) of the cylinder (1). The air intake groove (13) is spaced from the air inlet (20), and the air intake groove (13) is communicated with the air inlet (20) through a connecting channel; the compression chamber (10) extends to two opposite end faces (11) of the cylinder (1). The pump body assembly further includes a first housing (4) and a second housing (5). The first housing (4) and the second housing (5) are connected to the two end faces (11) of the cylinder (1) in one-to-one correspondence to separate the compression chamber (10) from the external space. The air intake groove (13) extends to one of the end faces (11) of the cylinder (1), and the air intake groove (13) is spaced from the other end face (11) of the cylinder (1).

2. The pump body assembly according to claim 1, characterized in that, there are two air intake grooves (13), and the two air intake grooves (13) extend to the two end faces (11) of the cylinder (1) in one-to-one correspondence.

3. The pump body assembly according to claim 1, characterized in that, the groove surface of the air intake groove (13) is an arc surface, and the arc surface extends to the inner wall surface of the compression chamber (10) and the corresponding end face (11).

4. The pump body assembly according to claim 3, characterized in that, a boundary line is formed between the groove surface of the air intake groove (13) and the corresponding end face. Along the rolling direction of the roller (2), the curvature of the boundary line gradually becomes smaller.

5. The pump body assembly according to claim 1, characterized in that, the groove surface of the air intake groove (13) includes a side surface and a bottom surface. The side surface extends along the axial direction of the compression chamber (10), and the bottom surface is perpendicular to the axial direction of the compression chamber (10).

6. The pump body assembly according to claim 1, characterized in that, the connecting channel is a communication hole (14) provided on the cylinder (1).

7. The pump body assembly according to claim 1, characterized in that, The connecting channel includes a transition hole (15) and a transition groove (16). The transition hole (15) and the transition groove (16) are both provided on the cylinder (1). The transition hole (15) communicates with the suction port (20), and the transition hole (15) extends to the end face (11) corresponding to the suction groove (13). The transition groove (16) is provided on the end face (11) corresponding to the suction groove (13), and the transition groove (16) communicates the transition hole (15) with the suction groove (13).

8. The pump body assembly according to claim 7, wherein, the suction port (20) includes a first hole section (201) and a second hole section (202). The first hole section (201) communicates with the compression chamber (10), and the second hole section (202) communicates the first hole section (201) with the outer wall of the cylinder (1); wherein, the aperture of the second hole section (202) is larger than that of the first hole section (201), and the transition hole (15) communicates with the second hole section (202).

9. The pump body assembly according to claim 7, wherein, the extending direction of the transition groove (16) is inclined to the radial direction of the compression chamber (10), so that the flowing direction of the gas flowing from the suction groove (13) into the compression chamber (10) is consistent with the rolling direction of the roller (2).

10. The pump body assembly according to claim 6, wherein, the suction port (20) includes a first hole section (201) and a second hole section (202). The first hole section (201) communicates with the compression chamber (10), and the second hole section (202) communicates the first hole section (201) with the outer wall of the cylinder (1); wherein, the aperture of the second hole section (202) is larger than that of the first hole section (201), and the communication hole (14) communicates with the second hole section (202).

11. A rotary compressor, wherein, the rotary compressor includes: a pump body assembly (100), and the pump body assembly (100) is the pump body assembly according to any one of claims 1 to 10; a motor assembly (200) for driving the roller (2) of the pump body assembly (100) to roll along the inner wall of the compression chamber (10); a liquid separator (300) provided at the suction port (20) of the pump body assembly (100) for separating the gaseous refrigerant from the liquid refrigerant.

12. An air conditioner, wherein, the air conditioner includes the rotary compressor according to claim 11.

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