Pump body assembly and fluid machinery having the same

Abstract

The present invention provides a pump body assembly and a fluid machine having the same. Wherein, the pump body assembly includes a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly. The first cylinder assembly includes a first cylinder, and the first cylinder has a first air inlet portion, a first inner cavity and a first sliding vane groove; the second cylinder assembly includes a second cylinder, and the second cylinder has a second air inlet portion, a second inner cavity and a second sliding vane groove. The pump body assembly further includes: a partition plate disposed between the first cylinder assembly and the second cylinder assembly. The partition plate has a concave portion, and the concave portion is in communication with both the first inner cavity and the first sliding vane groove. Along the circumferential direction of the first cylinder, the concave portion is located on the side of the first sliding vane groove close to the first air inlet portion; and / or, the concave portion is in communication with both the second inner cavity and the second sliding vane groove. Along the circumferential direction of the second cylinder, the concave portion is located on the side of the second sliding vane groove close to the second air inlet portion. The present invention effectively solves the problem of vacuum pumping phenomenon in the prior art during the air intake process of the pump body assembly.

Description

Technical Field

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

[0002] At present, rolling rotor compressors are often used in air conditioning systems. With the energy efficiency upgrade 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 compressors and air conditioning systems. Improving efficiency and reducing noise has always been the main research direction of rolling rotor compressors. Specifically, rolling rotor compressors usually adopt the following three 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 is communicated 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 and has a chamfer structure. Among them, in order to ensure the stiffness 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 and vacuum pumping, which leads to an increase in the ineffective power consumption of the compressor, the failure of the oil film between the sliding vane and the cylinder sliding vane groove, and an increase in the pressure difference between the vacuum cavity and the sliding vane groove, resulting in internal leakage. In addition, when the cylinder vacuum cavity is communicated with the suction hole instantaneously, it will cause local expansion of the suction and generate noise, affecting the user's listening experience. Summary of the Invention

[0004] The main object of the present invention is to provide a pump body assembly and a fluid machinery having the same, so as to solve the problem of vacuum pumping in the suction process of the pump body assembly in the prior art.

[0005] To achieve the above object, according to one aspect of the present invention, a pump body assembly is provided, including a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly. The first cylinder assembly includes a first cylinder having a first intake portion, a first inner cavity, and a first sliding vane groove, and both the first intake portion and the first sliding vane groove are communicated with the first inner cavity; the second cylinder assembly includes a second cylinder having a second intake portion, a second inner cavity, and a second sliding vane groove, and both the second intake portion and the second sliding vane groove are communicated with the second inner cavity. The pump body assembly further includes: a partition plate disposed between the first cylinder assembly and the second cylinder assembly, the partition plate having a concave portion that is communicated with both the first inner cavity and the first sliding vane groove, and along the circumferential direction of the first cylinder, the concave portion is located on a side of the first sliding vane groove close to the first intake portion; and / or, the concave portion is communicated with both the second inner cavity and the second sliding vane groove, and along the circumferential direction of the second cylinder, the concave portion is located on a side of the second sliding vane groove close to the second intake portion.

[0006] Furthermore, the concave portion is communicated with the first intake portion; and / or, the concave portion is communicated with the second intake portion.

[0007] Further, the concave portion is a groove, and there are two concave portions, which are respectively located on the upper end surface and the lower end surface of the partition plate.

[0008] Further, the concave portion is a through hole.

[0009] Further, the partition plate further has a communication hole, and the communication hole is communicated with both the first air inlet portion and the second air inlet portion.

[0010] Further, the communication hole and the concave portion are arranged independently of each other.

[0011] Further, the partition plate further includes a communication portion, and the communication hole is communicated with the concave portion through the communication portion; wherein, the communication portion is a communication cavity; or, the communication portion is a through hole.

[0012] Further, the pump body assembly further includes: an upper flange, which is arranged above the first cylinder assembly, and a first groove is arranged on the lower end surface of the upper flange, and the first groove is communicated with both the first air inlet portion and the first sliding vane groove.

[0013] Further, the pump body assembly further includes: a lower flange, which is arranged below the second cylinder assembly, and a second groove is arranged on the upper end surface of the lower flange, and the second groove is communicated with both the second air inlet portion and the second sliding vane groove.

[0014] Further, the first air inlet portion includes a first sub-air inlet portion and a second sub-air inlet portion communicated with the first sub-air inlet portion, and the first sub-air inlet portion is communicated with the first inner cavity through the second sub-air inlet portion; the first sub-air inlet portion is a first radial hole, and the second sub-air inlet portion is a U-shaped notch or a second radial hole.

[0015] Further, the first air inlet portion further includes a first air inlet hole, the second sub-air inlet portion is a second radial hole, and the concave portion or the communication hole is communicated with the second radial hole through the first air inlet hole; wherein, the first air inlet hole is an axial through hole.

[0016] Further, there are at least two first sub-air inlet portions, and the first air inlet portion further includes a fifth sub-air inlet portion and a first communication groove, and the fifth sub-air inlet portion is communicated with the second sub-air inlet portion through the first communication groove; wherein, the second sub-air inlet portion is a U-shaped notch, and the fifth sub-air inlet portion is an axial through hole.

[0017] Further, the second air inlet portion includes a third sub-air inlet portion and a fourth sub-air inlet portion communicated with the third sub-air inlet portion, and the third sub-air inlet portion is communicated with the second inner cavity through the fourth sub-air inlet portion; the third sub-air inlet portion is a third radial hole, and the fourth sub-air inlet portion is a U-shaped notch or a fourth radial hole.

[0018] Further, the second air inlet portion further includes a second air inlet hole, the fourth sub-air inlet portion is a fourth radial hole, and the concave portion or the communication hole is communicated with the fourth radial hole through the second air inlet hole; wherein, the second air inlet hole is an axial through hole.

[0019] Further, there are at least two third sub-intake parts. The second intake part further includes a sixth sub-intake part and a second communication groove. The sixth sub-intake part communicates with the fourth sub-intake part through the second communication groove. Among them, the fourth sub-intake part is a U-shaped notch, and the sixth sub-intake part is an axial through-hole.

[0020] According to another aspect of the present invention, there is provided a fluid machine including the above-mentioned pump body assembly.

[0021] Applying the technical solution of the present invention, the partition is arranged between the first cylinder assembly and the second cylinder assembly, and the concave part of the partition communicates with both the first inner cavity and the first sliding vane groove; and / or the concave part communicates with both the second inner cavity and the second sliding vane groove. In this way, during the suction process of the pump body assembly, that is, when the rotation angle of the roller rotates from 0° to a, the gas in the first sliding vane groove enters the first inner cavity through the concave part; and / or the gas in the second sliding vane groove enters the second inner cavity through the concave part, so as to avoid the phenomenon of suction vacuum, enable the pump body assembly to start suction from 0°, reduce the suction cut-off angle, and further solve the problem of vacuum pumping in the prior art during the suction process of the pump body assembly, improve the energy efficiency of the pump body assembly, reduce the loss of ineffective power consumption, eliminate the noise of the vacuum cavity, and improve the user experience. Description of the Drawings

[0022] The specification drawings constituting a part of this 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:

[0023] Figure 1 A cross-sectional view showing an embodiment of a fluid machine according to the present invention is shown;

[0024] Figure 2 A working principle diagram showing Embodiment 1 of the pump body assembly according to the present invention is shown;

[0025] Figure 3 Shown is Figure 2 The relationship diagram between the rotation angle of the pump body assembly in

[0026] Figure 4 Shown is Figure 2 The cross-sectional view of the pump body assembly in

[0027] Figure 5 Shown is Figure 4 The A-A cross-sectional view of the pump body assembly in

[0028] Figure 6 Shown is Figure 2 The exploded view of the pump body assembly in

[0029] Figure 7 Shown isFigure 6 Top view of the pump body assembly in

[0030] Figure 8 shows Figure 6 Front view of the partition of the pump body assembly in

[0031] Figure 9 shows Figure 8 Sectional view taken along line B - B of the partition in

[0032] Figure 10 Sectional view of the partition of the second embodiment of the pump body assembly according to the present invention is shown;

[0033] Figure 11 Sectional view of the third embodiment of the pump body assembly according to the present invention is shown;

[0034] Figure 12 shows Figure 11 Front view of the partition of the pump body assembly in

[0035] Figure 13 shows Figure 12 Sectional view taken along line C - C of the partition in

[0036] Figure 14 Exploded view of the fourth embodiment of the pump body assembly according to the present invention is shown;

[0037] Figure 15 shows Figure 14 Partial sectional view of the pump body assembly in

[0038] Figure 16 shows Figure 15 Sectional view taken along line D - D of the pump body assembly in

[0039] Figure 17 shows Figure 15 Front view of the first cylinder of the pump body assembly in

[0040] Figure 18 Exploded view of the fifth embodiment of the pump body assembly according to the present invention is shown;

[0041] Figure 19 shows Figure 18 Partial sectional view of the pump body assembly in

[0042] Figure 20 shows Figure 18 Front view of the partition of the pump body assembly in

[0043] Figure 21 Exploded view of the sixth embodiment of the pump body assembly according to the present invention is shown;

[0044] Figure 22 showsFigure 21 Partial cross-sectional view of the pump body assembly in

[0045] Figure 23 shows Figure 21 Partial cross-sectional view of the upper flange of the pump body assembly in

[0046] Figure 24 shows Figure 21 Front view of the first cylinder of the pump body assembly in

[0047] Figure 25 shows Figure 21 Partial cross-sectional view of the lower flange of the pump body assembly in; and

[0048] Figure 26 shows the front view of the first cylinder of the seventh embodiment of the pump body assembly according to the present invention.

[0049] Among them, the above-mentioned drawings include the following reference numerals:

[0050] 10, first cylinder; 11, first intake part; 111, first sub-intake part; 112, second sub-intake part; 113, fifth sub-intake part; 114, first communication groove; 115, suction cavity; 116, compression cavity; 117, first intake hole; 12, first inner cavity; 13, first sliding vane groove; 20, second cylinder; 21, second intake part; 211, third sub-intake part; 212, fourth sub-intake part; 213, second intake hole; 22, second inner cavity; 23, second sliding vane groove; 30, partition; 31, recess; 32, communication hole; 33, communication part; 40, upper flange; 41, first groove; 50, lower flange; 51, second groove; 60, liquid distributor; 70, upper shell assembly; 80, lower shell assembly; 90, driving device; 100, crankshaft; 110, first roller; 120, second roller; 130, first sliding vane; 140, second sliding vane. Detailed implementation manners

[0051] It should be noted that, without conflict, the embodiments and features in the embodiments of this application 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.

[0052] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

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

[0054] In order to solve the problem of vacuum pumping phenomenon existing in the pump body assembly during the air intake process in the prior art, the present application provides a pump body assembly and a fluid machine having the same.

[0055] Embodiment 1

[0056] As Figures 1 to 9 shown, the pump body assembly includes a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly. The first cylinder assembly includes a first cylinder 10, the first cylinder 10 has a first air intake part 11, a first inner cavity 12 and a first sliding vane groove 13, and both the first air intake part 11 and the first sliding vane groove 13 communicate with the first inner cavity 12. The second cylinder assembly includes a second cylinder 20, the second cylinder 20 has a second air intake part 21, a second inner cavity 22 and a second sliding vane groove 23, and both the second air intake part 21 and the second sliding vane groove 23 communicate with the second inner cavity 22. The pump body assembly further includes a partition 30. Among them, the partition 30 is arranged between the first cylinder assembly and the second cylinder assembly, the partition 30 has a concave part 31, the concave part 31 communicates with both the first inner cavity 12 and the first sliding vane groove 13, and along the circumferential direction of the first cylinder 10, the concave part 31 is located on the side of the first sliding vane groove 13 close to the first air intake part 11. The concave part 31 communicates with both the second inner cavity 22 and the second sliding vane groove 23, and along the circumferential direction of the second cylinder 20, the concave part 31 is located on the side of the second sliding vane groove 23 close to the second air intake part 21.

[0057] Applying the technical solution of this embodiment, the partition 30 is arranged between the first cylinder assembly and the second cylinder assembly, and the concave part 31 of the partition 30 communicates with both the first inner cavity 12 and the first sliding vane groove 13, and the concave part 31 communicates with both the second inner cavity 22 and the second sliding vane groove 23. In this way, during the air intake process of the pump body assembly, that is, when the rotation angle of the roller rotates from 0° to a, the gas in the first sliding vane groove 13 enters the first inner cavity 12 through the concave part 31, and the gas in the second sliding vane groove 23 enters the second inner cavity 22 through the concave part 31, so as to avoid the phenomenon of air intake vacuum pumping, enable the pump body assembly to start air intake from 0°, reduce the air intake cut-off angle, and further solve the problem of vacuum pumping phenomenon existing in the pump body assembly during the air intake process in the prior art, improve the energy efficiency of the pump body assembly, reduce the loss of ineffective power consumption, eliminate the noise of the vacuum cavity, and improve the user experience.

[0058] In this embodiment, the above arrangement of the recess 31 can also prevent the suction chamber from instantaneously expanding to generate suction noise, thereby enhancing the user experience.

[0059] In other embodiments not shown in the drawings, the recess is only in communication with both the first inner cavity and the first sliding vane groove. In this way, during the suction process of the pump body assembly, that is, when the roller rotates from 0° to a, the gas in the first sliding vane groove enters the first inner cavity through the recess, so as to avoid the phenomenon of suction and vacuuming, enabling the pump body assembly to start suction from 0°, thereby solving the problem of vacuuming during the suction process of the pump body assembly in the prior art, enhancing the energy efficiency of the pump body assembly, reducing the loss of ineffective power consumption, eliminating the noise in the vacuum chamber, and enhancing the user experience.

[0060] In other embodiments not shown in the drawings, the recess is only in communication with both the second inner cavity and the second sliding vane groove. In this way, during the suction process of the pump body assembly, that is, when the roller rotates from 0° to a, the gas in the second sliding vane groove enters the second inner cavity through the recess, so as to avoid the phenomenon of suction and vacuuming, enabling the pump body assembly to start suction from 0°, thereby solving the problem of vacuuming during the suction process of the pump body assembly in the prior art, enhancing the energy efficiency of the pump body assembly, reducing the loss of ineffective power consumption, eliminating the noise in the vacuum chamber, and enhancing the user experience.

[0061] In this embodiment, the pump body assembly has 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 conditions. Optionally, the pump body assembly has a triple-cylinder or multi-cylinder structure.

[0062] In this embodiment, the recess 31 is in communication with the first intake part 11 and the recess 31 is in communication with the second intake part 21. In this way, during the suction process of the pump body assembly, the gas entering the recess 31 can also enter the first inner cavity 12 through the first intake part 11 and can enter the second inner cavity 22 through the second intake part 21, so as to increase the suction volume of the pump body assembly and enhance the operating efficiency of the pump body assembly.

[0063] In other embodiments not shown in the drawings, the recess is only in communication with the first intake part. In this way, during the suction process of the pump body assembly, the gas entering the recess can also enter the first inner cavity through the first intake part, so as to increase the suction cross-sectional area of the pump body assembly, reduce the suction resistance, and improve the volumetric efficiency of the pump body assembly.

[0064] In other embodiments not shown in the drawings, the recess is only in communication with the second intake part. In this way, during the suction process of the pump body assembly, the gas entering the recess can also enter the second inner cavity through the second intake part, so as to increase the suction cross-sectional area of the pump body assembly, reduce the suction resistance, and improve the volumetric efficiency of the pump body assembly.

[0065] In this embodiment, the recess 31 is a groove, and there are two recesses 31, which are respectively located on the upper end surface and the lower end surface of the partition plate 30. In this way, the recess 31 on the upper end surface of the partition plate 30 communicates with the first sliding vane groove 13 and the first air inlet part 11, and the recess 31 on the lower end surface of the partition plate 30 communicates with the second sliding vane groove 23 and the second air inlet part 21, so as to avoid the phenomenon of vacuum pumping during the air intake process of the first cylinder assembly and the second cylinder assembly, thereby improving the energy efficiency of the pump body assembly, reducing the loss of ineffective power consumption, eliminating the noise in the vacuum chamber, and enhancing the user experience.

[0066] As Figures 6 to 9 shown, the partition plate 30 further has a communication hole 32, and the communication hole 32 communicates with both the first air inlet part 11 and the second air inlet part 21. In this way, during the air intake process of the pump body assembly, the gas in the first air inlet part 11 and the second air inlet part 21 can flow through the communication hole 32, so as to increase the air intake cross-sectional area of the pump body assembly, reduce the air intake resistance, and improve the volumetric efficiency of the pump body assembly.

[0067] In this embodiment, the communication hole 32 and the recess 31 are independently arranged. Specifically, the recess 31 is a circular groove, and the communication hole 32 is a circular through hole. The circular groove and the circular through hole are arranged at intervals, so that the processing of the communication hole 32 and the recess 31 is easier and simpler, reducing the processing difficulty and processing cost.

[0068] As Figure 7 shown, the first air inlet part 11 includes a first sub-air inlet part 111 and a second sub-air inlet part 112 communicating with the first sub-air inlet part 111. The first sub-air inlet part 111 communicates with the first inner cavity 12 through the second sub-air inlet part 112. The first sub-air inlet part 111 is a first radial hole, and the second sub-air inlet part 112 is a U-shaped notch. In this way, one end of the communication hole 32 communicates with the U-shaped notch, so as to increase the air intake cross-sectional area of the pump body assembly, thereby reducing the air intake resistance of the pump body assembly, improving the operating efficiency of the pump body assembly, and reducing energy consumption. At the same time, the above setting makes the structure of the first air inlet part 11 simpler, easier to process and implement, and reduces the processing cost of the pump body assembly.

[0069] As Figure 6As shown, the second air intake part 21 includes a third sub-air intake part 211 and a fourth sub-air intake part 212 communicating with the third sub-air intake part 211. The third sub-air intake part 211 communicates with the second inner cavity 22 through the fourth sub-air intake part 212. The third sub-air intake part 211 is a third radial hole, and the fourth sub-air intake part 212 is a U-shaped notch. In this way, the other end of the communication hole 32 communicates with the U-shaped notch, so as to increase the suction cross-sectional area of the pump body assembly, thereby reducing the suction resistance of the pump body assembly, improving the operating efficiency of the pump body assembly, and reducing energy consumption. At the same time, the above settings make the structure of the first air intake part 11 simpler, easier to process and implement, and reduce the processing cost of the pump body assembly.

[0070] Specifically, the orthographic projection of the communication hole 32 on the second sub-air intake part 112 is located within the second sub-air intake part 112, and the orthographic projection of the communication hole 32 on the fourth sub-air intake part 212 is located within the fourth sub-air intake part 212, so as to ensure that both the first air intake part 11 and the second air intake part 21 can communicate with the communication hole 32, improving the air intake reliability of the pump body assembly.

[0071] In this embodiment, the first inner cavity 12 includes a suction cavity 115 and a compression cavity 116. During the suction process of the pump body assembly, the gas in the first sliding vane groove 13 can enter the suction cavity 115 of the first cylinder assembly through the concave part 31, and the gas in the second sliding vane groove 23 can enter the suction cavity 115 of the second cylinder assembly through the concave part 31, so as to prevent the suction cavity 115 from being evacuated, which affects the energy efficiency of the pump body assembly, and can also avoid the pump body assembly from generating noise due to evacuation. At the same time, the gas entering the first air intake part 11 can not only enter the first inner cavity 12 through the second sub-air intake part 112, but also enter the first inner cavity 12 through the communication hole 32. The gas entering the second air intake part 21 can not only enter the second inner cavity 22 through the fourth sub-air intake part 212, but also enter the second inner cavity through the communication hole 32, thereby increasing the suction cross-sectional area of the pump body assembly and reducing the suction resistance of the pump body assembly.

[0072] As Figure 1 and Figures 3 to 7As shown in the figure, the pump body assembly further includes a crankshaft 100. The crankshaft 100 is disposed through the first cylinder assembly, the partition plate 30, and the second cylinder assembly. The crankshaft 100 includes a first eccentric portion and a second eccentric portion. The first cylinder assembly further includes a first sliding vane 130 and a first roller 110. The first eccentric portion is located in the first inner cavity 12. The first roller 110 is sleeved outside the first eccentric portion and rotates along with the first eccentric portion. The first sliding vane 130 is disposed in the first sliding vane groove 13, and the end of the first sliding vane 130 facing the first roller 110 is in contact with the outer surface of the first roller 110. The second cylinder assembly further includes a second sliding vane 140 and a second roller 120. The second eccentric portion is located in the second inner cavity 22. The second roller 120 is sleeved outside the second eccentric portion and rotates along with the second eccentric portion. The second sliding vane 140 is disposed in the second sliding vane groove 23, and the end of the second sliding vane 140 facing the second roller 120 is in contact with the outer surface of the second roller 120.

[0073] Specifically, a first inner cavity 12 is formed between the outer surface of the first roller 110 and the inner surface of the first cylinder 10. The first sliding vane 130 cooperates with the first roller 110 to divide the first inner cavity 12 into two parts, namely a low-pressure chamber and a high-pressure chamber. As the position of the first roller 110 changes, the low-pressure chamber gradually increases to form a negative pressure to suck in low-temperature and low-pressure refrigerant, and the volume of the high-pressure chamber gradually decreases to compress the refrigerant into high-temperature and high-pressure and discharge it, thereby realizing the compression of the refrigerant. In this way, the first cylinder assembly and the second cylinder assembly can simultaneously suck in refrigerant from the liquid distributor 60 to perform the above refrigerant compression work. Affected by the opposite settings of the first eccentric portion and the second eccentric portion of the crankshaft 100, the states of the first cylinder 10 and the second cylinder 20 sucking in and compressing the refrigerant always differ by 180°. The suction speed of the first cylinder 10 is inversely proportional to the suction speed of the second cylinder 20, that is, when the suction speed of the first cylinder 10 increases, the suction speed of the second cylinder 20 decreases. Finally, the high-temperature and high-pressure refrigerant compressed by the two cylinders is discharged outside the pump body assembly.

[0074] As Figure 4 shown in the figure, the pump body assembly further includes an upper flange 40 and a lower flange 50. Among them, the upper flange 40 is located above the first cylinder assembly and is connected to the first cylinder 10, and the lower flange 50 is located below the second cylinder assembly and is connected to the second cylinder 20.

[0075] As Figure 1 shown in the figure, the present application further provides a fluid machine, including the above-mentioned pump body assembly.

[0076] Optionally, the fluid machine is a compressor.

[0077] As Figure 1As shown in the figure, the compressor further includes a liquid distributor 60, an upper shell assembly 70, a lower shell assembly 80, and a driving device 90. Among them, the driving device 90 is connected to the crankshaft 100 to drive the crankshaft 100 to rotate. The liquid distributor 60 is communicated with the intake part of the compressor to separate the gas-liquid refrigerant entering the intake part. An installation cavity is formed around between the upper shell assembly 70 and the lower shell assembly 80, and the pump body assembly is arranged in the installation cavity.

[0078] Specifically, the working principle of the compressor is as follows:

[0079] The gas-liquid refrigerant discharged from the evaporator first enters the liquid distributor 60, and then enters the compressor through the liquid distributor 60. The gas entering the compressor is sucked by the first cylinder assembly and the second cylinder assembly. After the pump body assembly compresses the gas, high-temperature and high-pressure gaseous refrigerant is formed and discharged outside the compressor. After that, the high-temperature and high-pressure refrigerant is converted into low-temperature and high-pressure gas-liquid mixed refrigerant after passing through the condenser, and then enters the evaporator for heat exchange with the outside after throttling and pressure reduction by the throttle valve to complete the entire refrigeration cycle, and finally returns to the compressor for the next refrigeration cycle.

[0080] Embodiment 2

[0081] The difference between the pump body assembly in Embodiment 2 and that in Embodiment 1 lies in: the structure of the concave part 31 is different.

[0082] As Figure 10 shown in the figure, the concave part 31 is a through hole. In this way, during the air intake process of the pump body assembly, the gas first enters the concave part 31 through the first sliding vane groove 13 and the second sliding vane groove 23, and then enters the first inner cavity 12 and the second inner cavity 22 through the concave part 31 respectively, so as to prevent the pump body assembly from generating a vacuum pumping phenomenon during the air intake process, which affects the energy efficiency of the pump body assembly. At the same time, the above setting makes the structure of the concave part 31 simpler, easier to process and implement, and reduces the processing cost and processing difficulty of the concave part 31.

[0083] Embodiment 3

[0084] The difference between the pump body assembly in Embodiment 3 and that in Embodiment 1 lies in: the structure of the concave part 31 is different.

[0085] As Figures 11 to 13As shown, the recess 31 is a through hole, which communicates with the first sliding vane groove 13 and the first air inlet portion 11, and also communicates with the second sliding vane groove 23 and the second air inlet portion 21. In this way, during the air intake process of the pump body assembly, gas can enter the recess 31 through the first sliding vane groove 13 and the second sliding vane groove 23, and then enter the first inner cavity 12 and the second inner cavity 22 respectively through the recess 31, so as to prevent the pump body assembly from being evacuated during the air intake process and affecting the energy efficiency of the pump body assembly. At the same time, the recess 31 communicates with both the first air inlet portion 11 and the second air inlet portion 21, so as to increase the air intake cross-sectional area of the pump body assembly, reduce the air intake resistance, and improve the volumetric efficiency of the pump body assembly.

[0086] Embodiment 4

[0087] The difference between the pump body assembly in Embodiment 4 and that in Embodiment 3 lies in: the structure of the second sub-air inlet portion 112 is different.

[0088] As Figures 14 to 17 shown, the first air inlet portion 11 further includes a first air inlet hole 117, the second sub-air inlet portion 112 is a second radial hole, and the recess 31 communicates with the second radial hole through the first air inlet hole 117. Among them, the first air inlet hole 117 is an axial through hole. In this way, the recess 31 communicates with the first air inlet portion 11 through the first air inlet hole 117, so as to ensure that the recess 31 can communicate with the first air inlet portion 11, and also makes the structure of the first air inlet portion 11 more diverse, reducing the processing difficulty of the staff.

[0089] Specifically, the first radial hole and the second radial hole are coaxially arranged, and the inner diameter of the first radial hole is larger than that of the second radial hole. The orthographic projection of the first air inlet hole 117 on the recess 31 is located inside the recess 31, so as to ensure that the first air inlet hole 117 can communicate with the recess 31, thereby increasing the air intake cross-sectional area of the pump body assembly and improving the volume ratio of the pump body assembly.

[0090] In other embodiments not shown in the drawings, the communication hole communicates with the second radial hole through the first air inlet hole. In this way, the above setting ensures that the communication portion can communicate with the first air inlet portion, and also makes the structure of the first air inlet portion more diverse, reducing the processing difficulty of the staff.

[0091] Optionally, the end of the second radial hole communicating with the first inner cavity 12 has a chamfer structure. In this way, the above setting ensures that the communication portion can communicate with the first air inlet portion 11, and also makes the structure of the first air inlet portion 11 more diverse, reducing the processing difficulty of the staff.

[0092] As Figure 14 and Figure 15As shown, the second intake part 21 further includes a second intake hole 213. The fourth sub-intake part 212 is a fourth radial hole. The recess 31 communicates with the fourth radial hole through the second intake hole 213. Among them, the second intake hole 213 is an axial through-hole. In this way, the recess 31 communicates with the second intake part 21 through the second intake hole 213, ensuring that the recess 31 can communicate with the second intake part 21, and also making the structure of the second intake part 21 more diverse, reducing the processing difficulty for the staff.

[0093] Specifically, the third radial hole and the fourth radial hole are coaxially arranged, and the inner diameter of the third radial hole is larger than that of the fourth radial hole. The orthographic projection of the second intake hole 213 on the recess 31 is located within the recess 31 to ensure that the second intake hole 213 can communicate with the recess 31, thereby increasing the suction cross-sectional area of the pump body assembly and improving the volumetric efficiency of the pump body assembly.

[0094] In other embodiments not shown in the drawings, the communication hole communicates with the fourth radial hole through the second intake hole. In this way, the above setting ensures that the communication part can communicate with the second intake part, and also makes the structure of the second intake part more diverse, reducing the processing difficulty for the staff.

[0095] Optionally, one end of the fourth radial hole communicating with the second inner cavity 22 has a chamfer structure. In this way, the above setting ensures that the communication part can communicate with the second intake part 21, and also makes the structure of the second intake part 21 more diverse, reducing the processing difficulty for the staff.

[0096] Embodiment Five

[0097] The difference between the pump body assembly in Embodiment Five and that in Embodiment One lies in the different structure of the partition 30.

[0098] As Figures 18 to 20 shown, the partition 30 further includes a communication part 33. The communication hole 32 communicates with the recess 31 through the communication part 33. Among them, the communication part 33 is a communication cavity. Specifically, the recess 31 communicates with the communication hole 32 through the communication part 33. During the suction process of the pump body assembly, the gas in the first sliding vane groove 13 enters the first inner cavity 12 through the recess 31, and the gas in the second sliding vane groove 23 enters the second inner cavity 22 through the recess 31 to avoid the phenomenon of suction and vacuum. At the same time, the gas entering the recess 31 can also enter the communication hole 32 through the communication cavity, 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.

[0099] In other embodiments not shown in the drawings, the communication part is a through-hole. In this way, the above setting makes the structure of the communication part simpler, easier to process and implement, reducing the processing cost and difficulty of the communication part.

[0100] Embodiment Six

[0101] The difference between the pump body assembly in the sixth embodiment and that in the first embodiment lies in: the structure of the second sub-intake part 112 is different.

[0102] As Figures 21 to 24 shown, the pump body assembly further includes an upper flange 40. Among them, the upper flange 40 is arranged above the first cylinder assembly, and a first groove 41 is provided on the lower end surface of the upper flange 40. The first groove 41 is communicated with both the first intake part 11 and the first sliding vane groove 13. In this way, during the air intake process of the pump body assembly, gas can enter the first inner cavity 12 through the first groove 41 and the first intake part 11, so as to increase the air intake cross-sectional area of the pump body assembly, thereby reducing the air intake resistance and improving the volumetric efficiency of the pump body assembly.

[0103] As Figure 21 , Figure 22 and Figure 25 shown, the pump body assembly further includes a lower flange 50. Among them, the lower flange 50 is arranged below the second cylinder assembly, and a second groove 51 is provided on the upper end surface of the lower flange 50. The second groove 51 is communicated with both the second intake part 21 and the second sliding vane groove 23. In this way, during the air intake process of the pump body assembly, gas can enter the second inner cavity 22 through the second groove 51 and the second intake part 21, so as to increase the air intake cross-sectional area of the pump body assembly, thereby reducing the air intake resistance and improving the volumetric efficiency of the pump body assembly.

[0104] The seventh embodiment

[0105] The difference between the pump body assembly in the seventh embodiment and that in the first embodiment lies in: the structure of the second sub-intake part 112 is different.

[0106] Optionally, there are at least two first sub-intake parts 111. The first intake part 11 further includes a fifth sub-intake part 113 and a first communication groove 114. The fifth sub-intake part 113 is communicated with the second sub-intake part 112 through the first communication groove 114. Among them, the second sub-intake part 112 is a U-shaped notch, and the fifth sub-intake part 113 is an axial through hole. As Figure 26 shown, there are two first sub-intake parts 111. Along the direction from the first sub-intake part 111 to the second sub-intake part 112, the inner diameters of the two first sub-intake parts 111 gradually decrease, so as to make the structure of the first intake part 11 more diverse and reduce the processing difficulty of the staff.

[0107] Optionally, there are at least two third sub-intake parts 211. The second intake part 21 further includes a sixth sub-intake part and a second communication groove. The sixth sub-intake part communicates with the fourth sub-intake part 212 through the second communication groove. Among them, the fourth sub-intake part 212 is a U-shaped notch, and the sixth sub-intake part is an axial through-hole. In this embodiment, there are two third sub-intake parts 211. Along the direction from the third sub-intake part 211 to the fourth sub-intake part 212, the inner diameters of the two third sub-intake parts 211 gradually decrease, so as to make the structure of the second intake part 21 more diverse and reduce the processing difficulty of the staff.

[0108] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0109] The partition is arranged between the first cylinder assembly and the second cylinder assembly, and the concave part of the partition communicates with both the first inner cavity and the first sliding vane groove; and / or the concave part communicates with both the second inner cavity and the second sliding vane groove. In this way, during the air intake process of the pump body assembly, that is, when the rotation angle of the roller rotates from 0° to a, the gas in the first sliding vane groove enters the first inner cavity through the concave part; and / or the gas in the second sliding vane groove enters the second inner cavity through the concave part, so as to avoid the phenomenon of air intake and vacuum pumping, so that the pump body assembly starts to intake air from 0°, reduces the air intake cut-off angle, and further solves the problem of vacuum pumping during the air intake process of the pump body assembly in the prior art, improves the energy efficiency of the pump body assembly, reduces the loss of ineffective power consumption, eliminates the noise of the vacuum cavity, and improves the user experience.

[0110] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0111] 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 "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0112] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data 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.

[0113] 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 modifications and changes. 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, comprising a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly. The first cylinder assembly includes a first cylinder (10), the first cylinder (10) having a first air inlet portion (11), a first inner cavity (12) and a first sliding vane groove (13), and both the first air inlet portion (11) and the first sliding vane groove (13) are in communication with the first inner cavity (12); the second cylinder assembly includes a second cylinder (20), the second cylinder (20) having a second air inlet portion (21), a second inner cavity (22) and a second sliding vane groove (23), and both the second air inlet portion (21) and the second sliding vane groove (23) are in communication with the second inner cavity (22), characterized in that, The pump body assembly further includes: A partition plate (30) disposed between the first cylinder assembly and the second cylinder assembly. The partition plate (30) has a recess (31) that communicates with both the first inner cavity (12) and the first sliding vane groove (13). Along the circumferential direction of the first cylinder (10), the recess (31) is located on a side of the first sliding vane groove (13) close to the first air inlet portion (11); and / or, The recess (31) communicates with both the second inner cavity (22) and the second sliding vane groove (23). Along the circumferential direction of the second cylinder (20), the recess (31) is located on a side of the second sliding vane groove (23) close to the second air inlet portion (21); The partition plate (30) further has a communication hole (32) that communicates with both the first air inlet portion (11) and the second air inlet portion (21); The partition plate (30) further includes a communication portion (33). The communication hole (32) communicates with the recess (31) through the communication portion (33); wherein, the communication portion (33) is a communication cavity; or, the communication portion (33) is a through hole.

2. The pump body assembly according to claim 1, characterized in that The recess (31) communicates with the first air inlet portion (11); and / or, the recess (31) communicates with the second air inlet portion (21).

3. The pump body assembly according to claim 1, characterized in that, The recess (31) is a groove, and there are two recesses (31) which are respectively located on the upper end face and the lower end face of the partition plate (30).

4. The pump body assembly according to claim 1, characterized in that, The recess (31) is a through hole.

5. The pump body assembly according to claim 1, characterized in that, The communication hole (32) and the recess (31) are independently arranged.

6. The pump body assembly according to claim 1, characterized in that, The pump body assembly further includes: An upper flange (40) disposed above the first cylinder assembly. A first groove (41) is provided on the lower end face of the upper flange (40), and the first groove (41) communicates with both the first air inlet portion (11) and the first sliding vane groove (13).

7. The pump body assembly according to claim 1, wherein, The pump body assembly further includes: A lower flange (50) disposed below the second cylinder assembly. A second groove (52) is provided on the upper end face of the lower flange (50), and the second groove (52) communicates with both the second air inlet portion (21) and the second sliding vane groove (23).

8. The pump body assembly according to claim 1, characterized in that, The first air inlet portion (11) includes a first sub-air inlet portion (111) and a second sub-air inlet portion (112) communicating with the first sub-air inlet portion (111). The first sub-air inlet portion (111) communicates with the first inner cavity (12) through the second sub-air inlet portion (112); the first sub-air inlet portion (111) is a first radial hole, and the second sub-air inlet portion (112) is a U-shaped notch or a second radial hole.

9. The pump body assembly according to claim 8, characterized in that, The first air inlet portion (11) further includes a first air inlet hole (117). The second sub-air inlet portion (112) is a second radial hole, and the recess (31) or the communication hole (32) communicates with the second radial hole through the first air inlet hole (117); wherein, the first air inlet hole (117) is an axial through hole.

10. The pump body assembly according to claim 8, characterized in that, The at least two first sub-intake parts (111), the first intake part (11) further includes a fifth sub-intake part (113) and a first communication groove (114), and the fifth sub-intake part (113) communicates with the second sub-intake part (112) through the first communication groove (114); wherein, the second sub-intake part (112) is a U-shaped notch, and the fifth sub-intake part (113) is an axial through-hole.

11. The pump body assembly according to claim 1, wherein The second intake part (21) includes a third sub-intake part (211) and a fourth sub-intake part (212) communicating with the third sub-intake part (211), and the third sub-intake part (211) communicates with the second inner cavity (22) through the fourth sub-intake part (212); the third sub-intake part (211) is a third radial hole, and the fourth sub-intake part (212) is a U-shaped notch or a fourth radial hole.

12. The pump body assembly according to claim 11, wherein, The second intake part (21) further includes a second intake hole (213), the fourth sub-intake part (212) is a fourth radial hole, and the concave part (31) or the communication hole (32) communicates with the fourth radial hole through the second intake hole (213); wherein, the second intake hole (213) is an axial through-hole.

13. The pump body assembly according to claim 11, characterized in that, The at least two third sub-intake parts (211), the second intake part (21) further includes a sixth sub-intake part and a second communication groove, and the sixth sub-intake part communicates with the fourth sub-intake part (212) through the second communication groove; wherein, the fourth sub-intake part (212) is a U-shaped notch, and the sixth sub-intake part is an axial through-hole.

14. A fluid machine, characterized in that, Comprising the pump body assembly according to any one of claims 1 to 13.

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