Pump body assembly and fluid machine having the same

Abstract

The application provides a pump body assembly and a fluid machine with the same. The pump body assembly comprises a cylinder assembly, the cylinder assembly comprises a cylinder, the cylinder has an air inlet part, an inner cavity and a sliding vane groove, the air inlet part and the sliding vane groove are both communicated with the inner cavity, the pump body assembly further comprises a flange structure located above and / or below the cylinder, and a communication part arranged between the flange structure and the cylinder for communicating the sliding vane groove and the inner cavity. Along the circumference of the cylinder, the orthographic projection of the communication part on the cylinder is located on the side of the sliding vane groove close to the air inlet part. The application effectively solves the problem that the pump body assembly in the prior art has the phenomenon of vacuum pumping during the air suction process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid machinery, in particular to a pump body assembly and a fluid machinery with the same. BACKGROUND

[0002] At present, the rolling rotor compressor is commonly applied in air conditioning systems. With the energy efficiency upgrading of the new national standard and the improvement of user experience requirements, users have higher and higher requirements for the energy efficiency and noise of the compressor and air conditioning system. Efficiency improvement and noise reduction are always the main research direction of the rolling rotor compressor. Specifically, the rolling rotor compressor usually adopts the following three kinds of suction structures: 1. The communication hole between the cylinder suction hole and the cylinder inner cavity is a circular hole; 2. The cylinder suction hole communicates with the cylinder inner cavity through a U-shaped groove; 3. The communication hole between the cylinder suction hole and the cylinder inner cavity is a circular hole with a chamfer structure. In order to ensure the rigidity at the position of the cylinder suction hole, a certain wall thickness needs to be reserved between the cylinder suction hole and the sliding vane groove.

[0003] However, during the suction process of the cylinder, there is a phenomenon of suction vacuum, which increases the invalid power consumption of the compressor, the oil film between the sliding vane and the sliding vane groove fails, and the pressure difference between the vacuum cavity and the sliding vane groove increases to cause internal leakage. In addition, the moment when the cylinder vacuum cavity communicates with the suction hole will cause local expansion of the suction and generate noise, affecting the user's listening experience. SUMMARY

[0004] The main purpose of the present application is to provide a pump body assembly and a fluid machinery with the same, so as to solve the problem of the suction vacuum phenomenon of the pump body assembly in the suction process in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a pump body assembly is provided, which comprises a cylinder assembly, the cylinder assembly comprising a cylinder, the cylinder having an intake portion, an inner cavity and a sliding vane groove, the intake portion and the sliding vane groove both communicating with the inner cavity, the pump body assembly further comprising: a flange structure located above and / or below the cylinder; a communication portion, the communication portion being arranged between the flange structure and the cylinder to communicate the sliding vane groove and the inner cavity; wherein, along the circumference of the cylinder, the normal projection of the communication portion on the cylinder is located on one side of the sliding vane groove close to the intake portion.

[0006] Further, the intake portion comprises a first sub-intake portion and a second sub-intake portion in communication with the first sub-intake portion, the first sub-intake portion communicating with the inner cavity through the second sub-intake portion; the first sub-intake portion and the second sub-intake portion are both radial holes; the communication portion comprises a communication hole and a recess arranged on the cylinder, the communication hole communicating with the recess, the recess communicating with the sliding vane groove, and the communication hole communicating with the second sub-intake portion.

[0007] Further, the air inlet part further comprises a third sub-air inlet part and a first communication groove, the second sub-air inlet part communicates with the inner cavity through the third sub-air inlet part, and the communication hole communicates with the recess through the first communication groove.

[0008] Further, the recess is an arc-shaped groove.

[0009] Further, the air inlet part comprises a first sub-air inlet part and a second sub-air inlet part in communication with the first sub-air inlet part, the first sub-air inlet part communicates with the inner cavity through the second sub-air inlet part; the first sub-air inlet part is a radial hole, and the second sub-air inlet part is a U-shaped notch; the communication part comprises a recess arranged on the cylinder, and the recess communicates with the sliding vane groove and the U-shaped notch.

[0010] Further, the recess is a chamfered or rounded corner structure.

[0011] Further, the air inlet part further comprises a third sub-air inlet part, a fourth sub-air inlet part and a second communication groove, the first sub-air inlet part communicates with the second sub-air inlet part through the third sub-air inlet part, the fourth sub-air inlet part is an axial through hole, and the fourth sub-air inlet part communicates with the recess through the second communication groove.

[0012] Further, a third communication groove is arranged on the surface of the flange structure facing the cylinder, the air inlet part further comprises a third sub-air inlet part and a fourth sub-air inlet part in communication with the third sub-air inlet part, the first sub-air inlet part communicates with the second sub-air inlet part through the third sub-air inlet part, the third communication groove communicates with the third sub-air inlet part through the fourth sub-air inlet part; wherein the third sub-air inlet part is a radial hole, and the fourth sub-air inlet part is an axial through hole; the third communication groove, the third sub-air inlet part and the fourth sub-air inlet part form a communication part.

[0013] Further, the cylinder assembly is two, and the pump body assembly further comprises:

[0014] A partition plate is arranged between the two cylinder assemblies, and a communication recess is arranged on the partition plate, and the second sub-air inlet part communicates with the fourth sub-air inlet part through the communication recess.

[0015] Further, the communication recess is a groove or a through hole.

[0016] Further, the air inlet part comprises a first sub-air inlet part, a second sub-air inlet part and a third sub-air inlet part, the first sub-air inlet part communicates with the inner cavity through the second sub-air inlet part, and the third sub-air inlet part communicates with the second sub-air inlet part; the communication part comprises a flange recess arranged on the flange structure, and the flange recess communicates with the sliding vane groove and the third sub-air inlet part.

[0017] Further, the flange recess comprises a first sub-recess and a second sub-recess in communication with the first sub-recess, the first sub-recess communicates with the sliding vane groove, the second sub-recess communicates with the third sub-air inlet part, and the communication area of the first sub-recess is smaller than that of the second sub-recess.

[0018] According to another aspect of the present application, there is provided a fluid machine comprising the pump body assembly described above.

[0019] According to the technical solution of the present application, the communication part is arranged between the flange structure and the cylinder for communicating the sliding vane groove and the inner cavity. In this way, during the suction process of the pump body assembly, i.e. during the rotation of the rolling angle from 0° to a, the gas in the sliding vane groove enters the suction part through the communication part and enters the inner cavity through the suction part, so as to avoid the phenomenon of suction vacuum, so that the pump body assembly starts to suck from 0°, the suction cutoff angle is reduced, and the problem of suction vacuum in the suction process of the pump body assembly in the prior art is solved, the energy efficiency of the pump body assembly is improved, the invalid power consumption loss is reduced, the vacuum cavity noise is eliminated, and the user's use experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiments of the application and assist in

[0021] Figure 1 shows a cross-sectional view of an embodiment of the fluid machine according to the present application;

[0022] Figure 2 shows a working principle diagram of an embodiment one of the pump body assembly according to the present application;

[0023] Figure 3 shows Figure 2 a relationship diagram between the rolling angle of the pump body assembly and the pressure of the pump body assembly in

[0024] Figure 4 shows an exploded view of the embodiment one of the pump body assembly according to the present application;

[0025] Figure 5 shows Figure 4 a cross-sectional view of the pump body assembly in

[0026] Figure 6 shows Figure 4 a top view of the cylinder of the pump body assembly in

[0027] Figure 7 shows Figure 6 an A-A cross-sectional view of the cylinder in

[0028] Figure 8 shows a top view of the cylinder of the embodiment two of the pump body assembly according to the present application;

[0029] Figure 9 shows Figure 8 a B-B cross-sectional view of the cylinder of the pump body assembly in

[0030] Figure 10 An exploded view of a third embodiment of a pump block assembly according to the present application is shown;

[0031] Figure 11 A cross-sectional view of the pump block assembly in Figure 10 is shown;

[0032] Figure 12 A top view of the cylinder of the pump block assembly in Figure 10 is shown;

[0033] Figure 13 A C-C cross-sectional view of the cylinder in Figure 12 is shown;

[0034] Figure 14 A top view of the cylinder of a fourth embodiment of a pump block assembly according to the present application is shown;

[0035] Figure 15 A top view of the pump block assembly of a fifth embodiment of a pump block assembly according to the present application is shown, after removal of the upper flange structure;

[0036] Figure 16 A bottom view of the upper flange structure of the pump block assembly of a fifth embodiment of a pump block assembly according to the present application is shown;

[0037] Figure 17 A partial cross-sectional view of the upper flange structure in Figure 16 is shown;

[0038] Figure 18 A top view of the cylinder of the pump block assembly in Figure 15 is shown;

[0039] Figure 19 A top view of the partition of the pump block assembly in Figure 15 is shown;

[0040] Figure 20 A D-D cross-sectional view of the partition in Figure 19 is shown;

[0041] Figure 21 A top view of the lower flange structure of the pump block assembly of a fifth embodiment of a pump block assembly according to the present application is shown;

[0042] Figure 22 A partial cross-sectional view of the lower flange structure in Figure 21 is shown;

[0043] Figure 23 An exploded view of a sixth embodiment of a pump block assembly according to the present application is shown;

[0044] Figure 24 An exploded view of a sixth embodiment of a pump block assembly according to the present application is shown;Figure 23 Figure 6 is a partial cross-sectional view of the pump body assembly in Figure 5;

[0045] Figure 25 Figure 7 is an E-E cross-sectional view of the pump body assembly in Figure 5; Figure 24

[0046] Figure 26 Figure 8 is a partial cross-sectional view of the upper flange structure of the pump body assembly in Figure 5; Figure 23

[0047] Figure 27 Figure 9 is a partial cross-sectional view of the lower flange structure of the pump body assembly in Figure 5; and Figure 23

[0048] Figure 28 Figure 10 is a cross-sectional view of the pump body assembly in Figure 5. Figure 4

[0049] Wherein, the above-mentioned drawings include the following reference signs:

[0050] 10, cylinder; 11, intake portion; 111, first sub-intake portion; 112, second sub-intake portion; 116, first communication groove; 115, suction chamber; 117, compression chamber; 12, inner cavity; 13, sliding vane groove; 211, third sub-intake portion; 212, fourth sub-intake portion; 214, third communication groove; 215, second communication groove; 30, partition plate; 31, recess; 32, communication hole; 34, communication recess; 60, flange structure; 61, flange recess; 611, first sub-recess; 612, second sub-recess; 70, distributor; 80, sliding vane; 90, roller; 100, crankshaft; 110, upper shell assembly; 120, lower shell assembly; 130, driving device. DETAILED DESCRIPTION

[0051] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0052] It should be noted that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled in the art to which the present application belongs.

[0053] In the present application, unless otherwise specified, the orientation words such as "upper" and "lower" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions; similarly, for the convenience of understanding and description, "left" and "right" are generally directed to the left and right shown in the drawings; "inner" and "outer" refer to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0054] ​​​​To solve the problem of the pump body assembly in the prior art that there is a vacuum phenomenon in the process of inhaling, the application provides a pump body assembly and a fluid machine with the same.

[0055] Embodiment one

[0056] As shown in Figures 1 to 7 The pump body assembly includes a cylinder assembly, the cylinder assembly includes a cylinder 10, the cylinder 10 has an intake portion 11, an inner cavity 12 and a sliding vane groove 13, the intake portion 11 and the sliding vane groove 13 are both in communication with the inner cavity 12, the pump body assembly further includes a flange structure 60 and a communication portion. The flange structure 60 is located above and / or below the cylinder 10. The communication portion is arranged between the flange structure 60 and the cylinder 10 to communicate the sliding vane groove 13 and the inner cavity 12. Among them, along the circumference of the cylinder 10, the orthographic projection of the communication portion on the cylinder 10 is located on the side of the sliding vane groove 13 close to the intake portion 11.

[0057] By applying the technical scheme of the embodiment, the communication portion is arranged between the flange structure 60 and the cylinder 10 to communicate the sliding vane groove 13 and the inner cavity 12. In this way, in the process of inhaling of the pump body assembly, that is, in the process of the rotation angle of the roller 90 rotating from 0° to a, the gas in the sliding vane groove 13 enters the intake portion 11 through the communication portion and enters the inner cavity 12 through the intake portion 11, so as to avoid the phenomenon of inhaling vacuum, so that the pump body assembly starts to inhale from 0°, reduces the inhaling cutoff angle, and further solves the problem of the pump body assembly in the prior art that there is a vacuum phenomenon in the process of inhaling, improves the energy efficiency of the pump body assembly, reduces the loss of invalid power consumption, eliminates the noise of the vacuum cavity, and improves the user's experience.

[0058] In the embodiment, the flange structure 60 includes an upper flange structure and a lower flange structure. Among them, the upper flange structure is located above the cylinder assembly and connected with the cylinder 10, and the lower flange structure is located below the cylinder assembly and connected with the cylinder 10. The sliding vane 80 is slidably arranged in the sliding vane groove 13, and the head of the sliding vane 80 is always in contact with the roller 90.

[0059] In the embodiment, the pump body assembly is a double-cylinder structure. It should be noted that the number of cylinders of the pump body assembly is not limited to this, and can be adjusted according to the working condition. Alternatively, the pump body assembly is a single-cylinder or a three-cylinder or a multi-cylinder structure.

[0060] Optionally, the communication part is one; or, the communication part is multiple, and the cylinder assembly is multiple, and the multiple communication parts are arranged in correspondence with the multiple cylinder assemblies. In this way, in the process of the pump body assembly inhaling, the gas in the sliding vane groove 13 enters the intake part 11 through the communication part, and then enters the inner cavity 12 through the intake part 11, thereby increasing the inhaled amount of the pump body assembly, and the inhaled vacuum phenomenon occurs in the process of the pump body assembly inhaling, thereby improving the operation efficiency of the pump body assembly. At the same time, the above arrangement makes the number of communication parts more flexible to meet different use conditions and reduces the labor intensity of workers.

[0061] In the embodiment, the cylinder assembly is two, the communication part is two, and the two communication parts are arranged in one-to-one correspondence with the two cylinder assemblies. In this way, in the process of the pump body assembly inhaling, the gas in the sliding vane groove 13 of the first cylinder assembly enters the intake part 11 of the first cylinder assembly through the corresponding communication part, and then enters the inner cavity 12 of the first cylinder assembly through the intake part 11. The gas in the sliding vane groove 13 of the second cylinder assembly enters the intake part 11 of the second cylinder assembly through the corresponding communication part, and then enters the inner cavity 12 of the second cylinder assembly through the intake part 11. In this way, the inhaled amount of the pump body assembly is increased, and the inhaled vacuum phenomenon occurs in the process of the pump body assembly inhaling, thereby improving the operation efficiency of the pump body assembly.

[0062] It should be noted that the number of cylinder assemblies is not limited and can be adjusted according to the working conditions. In other embodiments not shown in the drawings, the cylinder assembly is one, the communication part is one, the gas in the sliding vane groove enters the intake part through the communication part, and then enters the inner cavity through the intake part, thereby increasing the inhaled amount of the pump body assembly, and the inhaled vacuum phenomenon occurs in the process of the pump body assembly inhaling, thereby improving the operation efficiency of the pump body assembly.

[0063] As shown in FIG. 1, Figures 4 to 7 The intake part 11 includes a first sub-intake part 111 and a second sub-intake part 112 in communication with the first sub-intake part 111, and the first sub-intake part 111 is in communication with the inner cavity 12 through the second sub-intake part 112. The first sub-intake part 111 and the second sub-intake part 112 are both radial holes. The communication part includes a communication hole 32 and a recess 31 arranged on the cylinder 10, the communication hole 32 is in communication with the recess 31, the recess 31 is in communication with the sliding vane groove 13, and the communication hole 32 is in communication with the second sub-intake part 112. In this way, the above arrangement makes the structure of the communication part simpler, easier to process and implement, and reduces the processing cost and difficulty of the communication part.

[0064] Specifically, the gas in the vane groove 13 first enters the recess 31, then enters the communication hole 32 through the recess 31, and then enters the second sub-gas inlet portion 112, the first sub-gas inlet portion 111 and the inner cavity 12 in sequence through the communication hole 32, so as to prevent the pump body assembly from being in a vacuum state during the suction process, and increase the suction amount of the pump body assembly.

[0065] As shown in Figure 28 , the inner cavity 12 includes a suction cavity 115 and a compression cavity 117. During the suction process of the pump body assembly, the gas in the vane groove 13 can enter the communication hole 32 through the recess 31, and then enter the suction cavity 115 of the cylinder assembly in sequence through the communication hole 32, so as to prevent the suction cavity 115 from being in a vacuum state and affecting the energy efficiency of the pump body assembly, and also to avoid noise generated by the pump body assembly due to the vacuum. At the same time, the above-mentioned arrangement of the recess 31 increases the suction cross-sectional area of the pump body assembly and reduces the suction resistance of the pump body assembly.

[0066] In the embodiment, the recess 31 is an arc-shaped groove. In this way, the above-mentioned arrangement makes the structure of the recess 31 simpler, easier to process and implement, and reduces the processing cost of the recess 31. Alternatively, the groove bottom of the arc-shaped groove is an arc-shaped surface, which is in communication with the communication hole 32, so as to ensure that the gas can enter the communication hole 32 through the arc-shaped groove, and increase the suction amount of the pump body assembly.

[0067] As shown in Figure 1 , the application further provides a fluid machine comprising the pump body assembly.

[0068] Alternatively, the fluid machine is a compressor.

[0069] As shown in Figure 1 , the compressor further comprises a distributor 70, an upper shell assembly 110, a lower shell assembly 120 and a driving device 130. The driving device 130 is connected with the crankshaft 100 to drive the rotation of the crankshaft 100. The distributor 70 is in communication with the gas inlet portion of the compressor to separate the gas-liquid refrigerant entering the gas inlet portion. The upper shell assembly 110 and the lower shell assembly 120 are arranged to form a mounting cavity, and the pump body assembly is arranged in the mounting cavity.

[0070] Specifically, the working principle of the compressor is as follows:

[0071] The gaseous and liquid refrigerant discharged from the evaporator first enters the distributor 70, and then enters the compressor. The gas entering the compressor is drawn in by the first and second cylinder assemblies. The pump assembly compresses the gas to form a high-temperature, high-pressure gaseous refrigerant, which is then discharged outside the compressor. Afterward, the high-temperature, high-pressure refrigerant passes through the condenser and is converted into a low-temperature, high-pressure gaseous-liquid mixture. This mixture then passes through a throttling valve to reduce its pressure before entering the evaporator to exchange heat with the outside environment, completing the entire refrigeration cycle. Finally, it returns to the compressor for the next refrigeration cycle.

[0072] Example 2

[0073] The pump assembly in Embodiment 2 differs from that in Embodiment 1 in that the structure of the air intake 11 is different.

[0074] like Figure 8 and Figure 9 As shown, the air intake 11 also includes a third sub-air intake 211 and a first connecting groove 116. The second sub-air intake 112 communicates with the inner cavity 12 through the third sub-air intake 211, and the connecting hole 32 communicates with the recess 31 through the first connecting groove 116. In this way, the recess 31 communicates with the connecting hole 32 through the first connecting groove 116, and the connecting hole 32 communicates with the second sub-air intake 112, ensuring that the recess 31 can communicate with the first air intake 11. This also makes the structure of the first air intake 11 more versatile and reduces the processing difficulty for workers.

[0075] Specifically, the first sub-intake 111 is a first radial hole, the second sub-intake 112 is a second radial hole, and the third sub-intake 211 is a third radial hole. The first, second, and third radial holes are coaxially arranged, and the inner diameter of the first radial hole is larger than the inner diameter of the second radial hole, and the inner diameter of the second radial hole is larger than the inner diameter of the third radial hole, so that the structure of the intake 11 is simpler and easier to process and implement.

[0076] Example 3

[0077] The pump assembly in Example 3 differs from that in Example 1 in that the structure of the connecting part is different.

[0078] like Figures 10 to 13As shown, the air intake section 11 includes a first sub-air intake section 111 and a second sub-air intake section 112 communicating with the first sub-air intake section 111. The first sub-air intake section 111 communicates with the inner cavity 12 through the second sub-air intake section 112. The first sub-air intake section 111 is a radial hole, and the second sub-air intake section 112 is a U-shaped notch. The connecting section includes a recess 31 provided on the cylinder 10, which communicates with both the sliding vane groove 13 and the U-shaped notch. This design simplifies the structure of the connecting section, making it easier to manufacture and implement, thus reducing the manufacturing cost and difficulty. Furthermore, this design allows for greater structural diversity in the connecting section to meet different usage requirements and reduces the workload of workers.

[0079] Specifically, during the air intake process of the pump assembly, the gas located in the vane groove 13 first enters the recess 31, then enters the second sub-intake part 112 through the recess 31, and then enters the inner cavity 12 through the second sub-intake part 112, so as to prevent the pump assembly from experiencing air intake and vacuuming during the air intake process, thereby increasing the air intake volume of the pump assembly.

[0080] Optionally, the recess 31 has a chamfered or rounded corner structure. In this way, the above-mentioned arrangement ensures that the recess 31 can connect the vane groove 13 and the air intake 11, and also makes the structure of the recess 31 more diverse, reducing the processing difficulty for workers.

[0081] Example 4

[0082] The pump assembly in Embodiment 4 differs from that in Embodiment 3 in that the structure of the air intake 11 is different.

[0083] like Figure 14 As shown, the air intake 11 also includes a third sub-air intake 211, a fourth sub-air intake 212, and a second connecting groove 215. The first sub-air intake 111 communicates with the second sub-air intake 112 through the third sub-air intake 211. The fourth sub-air intake 212 is an axial through hole and communicates with the recess 31 through the second connecting groove 215. This arrangement simplifies the structure of the connecting part, making it easier to manufacture and implement, thus reducing the manufacturing cost and difficulty. Furthermore, this arrangement allows for greater structural diversity in the connecting part to meet different usage requirements and reduces the workload of workers.

[0084] Specifically, during the suction process of the pump assembly, the gas located in the vane groove 13 first enters the recess 31, then enters the second sub-intake section 112 through the recess 31, and finally enters the inner cavity 12 through the second sub-intake section 112. This prevents the pump assembly from experiencing a vacuum during suction, thereby increasing the suction volume of the pump assembly. Simultaneously, the gas entering the first intake section 11 can not only directly enter the second sub-intake section 112 through the third sub-intake section 211, but also through the fourth sub-intake section 212 and the second connecting groove 215. This increases the suction cross-sectional area of ​​the pump assembly, reduces suction resistance, and improves the volumetric efficiency of the pump assembly.

[0085] In this embodiment, the first sub-intake 111 is a first radial hole, the second sub-intake 112 is a second radial hole, and the third sub-intake 211 is a third radial hole. The first, second, and third radial holes are coaxially arranged, and the inner diameter of the first radial hole is larger than the inner diameter of the second radial hole, and the inner diameter of the second radial hole is larger than the inner diameter of the third radial hole, so that the structure of the intake 11 is simpler and easier to process and implement.

[0086] Example 5

[0087] The pump assembly in Example 5 differs from that in Example 3 in that the structure of the connecting part is different.

[0088] like Figures 15 to 22 As shown, a third connecting groove 214 is provided on the surface of the flange structure 60 facing the cylinder 10. The air intake 11 also includes a third sub-air intake 211 and a fourth sub-air intake 212 communicating with the third sub-air intake 211. The first sub-air intake 111 communicates with the second sub-air intake 112 through the third sub-air intake 211, and the third connecting groove 214 communicates with the third sub-air intake 211 through the fourth sub-air intake 212. The third sub-air intake 211 is a radial hole, and the fourth sub-air intake 212 is an axial through hole. The third connecting groove 214, the third sub-air intake 211, and the fourth sub-air intake 212 form a connecting part. This arrangement simplifies the structure of the connecting part, making it easier to manufacture and implement, and reducing the manufacturing cost and difficulty. Simultaneously, this arrangement allows for greater structural diversity in the connecting part to meet different usage requirements and reduces the labor intensity of workers.

[0089] Specifically, during the suction process of the pump body assembly, the gas in the sliding vane groove 13 first enters the recess 31, then enters the second sub-gas inlet portion 112 through the recess 31, and then enters the inner cavity 12 through the second sub-gas inlet portion 112, so as to prevent the suction vacuum phenomenon of the pump body assembly during the suction process and increase the suction amount of the pump body assembly. Meanwhile, the gas entering the first gas inlet portion 11 can not only directly enter the second sub-gas inlet portion 112 through the third sub-gas inlet portion 211, but also enter the fourth sub-gas inlet portion 212 through the third sub-gas inlet portion 211, and then enter the third communication groove 214 through the fourth sub-gas inlet portion 212. The gas in the third communication groove 214 enters the third sub-gas inlet portion 211 and the second sub-gas inlet portion 112 again through the fourth sub-gas inlet portion 212, thereby increasing the suction cross-sectional area of the pump body assembly, reducing the suction resistance, and improving the volumetric efficiency of the pump body assembly.

[0090] As shown in Figure 15 , Figure 19 and Figure 20 , the cylinder assembly is two, and the pump body assembly further comprises a partition plate 30. The partition plate 30 is arranged between the two cylinder assemblies, and the partition plate 30 is provided with a communication recess 34. The second sub-gas inlet portion 112 communicates with the fourth sub-gas inlet portion 212 through the communication recess 34. Specifically, the fourth sub-gas inlet portion 212 is a through hole extending from the upper end face to the lower end face of the cylinder 10. The communication recess 34 connects the fourth sub-gas inlet portions 212 of the two cylinders 10. On the one hand, it ensures that the two cylinder assemblies will not appear suction vacuum phenomenon during the suction process, thereby increasing the suction amount of the pump body assembly. On the other hand, it increases the suction cross-sectional area of the two cylinder assemblies, reduces the suction resistance, and improves the volumetric efficiency of the pump body assembly.

[0091] Optionally, the communication recess 34 is a groove or a through hole. As shown in Figure 20 , the communication recess 34 is a through hole, so that the structure of the communication recess 34 is simpler, easier to process and implement, and the processing cost of the communication recess 34 is reduced. At the same time, the above-mentioned arrangement ensures that the communication recess 34 can connect the fourth sub-gas inlet portions 212 of the two cylinders 10.

[0092] In the embodiment, the flange structure 60 comprises an upper flange structure and a lower flange structure. The third communication groove 214 is arranged on the surface of the upper flange structure and the lower flange structure towards the cylinder 10.

[0093] Embodiment six

[0094] The pump body assembly in embodiment six is different from that in embodiment one in that the structure of the communication portion is different.

[0095] As shown in Figures 23 to 27As shown, the intake part 11 includes a first sub-intake part 111, a second sub-intake part 112, and a third sub-intake part 211. The first sub-intake part 111 is in communication with the inner cavity 12 through the second sub-intake part 112, and the third sub-intake part 211 is in communication with the second sub-intake part 112. The communication part includes a flange recess 61 provided on the flange structure 60, which is in communication with the sliding vane groove 13 and the third sub-intake part 211. In this way, the above arrangement makes the structure of the communication part simpler, easier to process and implement, and reduces the processing cost and difficulty of the communication part. At the same time, the above arrangement makes the structure of the communication part more diverse to meet different use requirements and reduces the labor intensity of the workers.

[0096] Specifically, during the suction process of the pump body assembly, the gas in the flange recess 61 can directly enter the second sub-intake part 112 through the third sub-intake part 211, and the gas in the sliding vane groove 13 can also enter the second sub-intake part 112 through the flange recess 61 via the third sub-intake part 211, and finally enter the inner cavity 12, so as to prevent the suction vacuum phenomenon of the pump body assembly during the suction process and increase the suction amount of the pump body assembly. At the same time, the above arrangement increases the suction cross-sectional area of the pump body assembly, reduces the suction resistance, and improves the volumetric efficiency of the pump body assembly.

[0097] In the present embodiment, the third sub-intake part 211 is an axial hole, one end of which is in communication with the second sub-intake part 112, and the other end of which is in communication with the flange recess 61, thereby ensuring that the third sub-intake part 211 can communicate the flange recess 61 and the second sub-intake part 112. At the same time, the above arrangement makes the structure of the third sub-intake part 211 simpler, easier to process and implement, and reduces the processing cost of the third sub-intake part 211.

[0098] In the present embodiment, the flange structure 60 includes an upper flange structure and a lower flange structure, the third sub-intake part 211 of the first cylinder assembly is arranged towards the upper flange structure, and the third sub-intake part 211 of the second cylinder assembly is arranged towards the lower flange structure.

[0099] As shown in Figure 23 and Figure 25 The flange recess 61 includes a first sub-recess 611 and a second sub-recess 612 in communication with the first sub-recess 611. The first sub-recess 611 is in communication with the sliding vane groove 13, and the second sub-recess 612 is in communication with the third sub-intake part 211. The communication area of the first sub-recess 611 is smaller than that of the second sub-recess 612. In this way, the above arrangement makes the structure of the flange recess 61 simpler, easier to process and implement, and ensures that the flange recess 61 can be in communication with the sliding vane groove 13 and the third sub-intake part 211.

[0100] It should be noted that the structure of the flange recess 61 is not limited thereto, and can be adjusted according to the working condition. Alternatively, the flange recess 61 comprises a first sub-recess 611 and a second sub-recess 612, which are independently arranged and not communicated with each other, so that the structure of the flange recess 61 is more diverse, and the labor intensity of the workers is reduced.

[0101] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0102] The communication part is arranged between the flange structure and the cylinder, for communicating the sliding vane groove and the inner cavity. In this way, during the process of the pump body assembly inhaling, i.e. the process of the rotation angle of the roller rotating from 0° to a, the gas in the sliding vane groove enters the intake part through the communication part and enters the inner cavity through the intake part, so as to avoid the phenomenon of inhaling and vacuumizing, so that the pump body assembly starts to inhale from 0°, the inhaling cutoff angle is reduced, and the problem of inhaling and vacuumizing in the process of inhaling of the pump body assembly in the prior art is solved, the energy efficiency of the pump body assembly is improved, the invalid power consumption loss is reduced, the vacuum cavity noise is eliminated, and the user's use experience is improved.

[0103] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0104] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0105] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate 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.

[0106] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pump body assembly, comprising a cylinder assembly, the cylinder assembly including a cylinder (10), the cylinder (10) having an air inlet (11), an inner cavity (12), and a vane groove (13), the air inlet (11) and the vane groove (13) both communicating with the inner cavity (12), characterized in that, The pump assembly also includes: A flange structure (60) is located above and / or below the cylinder (10); A connecting portion is provided between the flange structure (60) and the cylinder (10) for connecting the vane groove (13) and the inner cavity (12); wherein, along the circumference of the cylinder (10), the orthographic projection of the connecting portion on the cylinder (10) is located on the side of the vane groove (13) near the air intake portion (11); The air intake section (11) includes a first sub-air intake section (111) and a second sub-air intake section (112) communicating with the first sub-air intake section (111). The first sub-air intake section (111) communicates with the inner cavity (12) through the second sub-air intake section (112). The communicating part includes a recess (31) provided on the cylinder (10). The recess (31) communicates with the vane groove (13). The air intake (11) further includes a third sub-air intake (211), a fourth sub-air intake (212), and a second connecting groove (215). The first sub-air intake (111) is connected to the second sub-air intake (112) through the third sub-air intake (211). The fourth sub-air intake (212) is an axial through hole. The fourth sub-air intake (212) is connected to the recess (31) through the second connecting groove (215).

2. The pump body assembly according to claim 1, characterized in that, The first sub-inlet (111) is a radial hole, and the second sub-inlet (112) is a U-shaped notch; the recess (31) is also connected to the U-shaped notch.

3. The pump body assembly according to claim 2, characterized in that, The recess (31) has a chamfered structure.

4. A fluid machine, characterized in that, The pump body assembly includes any one of claims 1 to 3.

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