Pump Assemblies and Compressors

Abstract

The present invention provides a pump body assembly and a compressor. The pump body assembly includes: a crankshaft; a cylinder, the cylinder sleeve is arranged on the eccentric part of the crankshaft; a flange, the flange sleeve is arranged on the crankshaft and is located on one side of the cylinder; a plugging structure, the plugging structure is connected to the flange, and the plugging structure includes a first elastic part and a second elastic part connected to each other, the first elastic part abuts against the end face of the flange away from the cylinder, and the second elastic part extends into the flange and abuts against the flange. The technical solution of the present invention solves the problem in the prior art that the end face of the flange close to the cylinder is greatly deformed during sealing assembly, thereby reducing the performance of the compressor and the reliability of the compressor.

Description

Technical Field

[0001] The invention relates to the field of compression technology, in particular to a pump body assembly and a compressor. Background Art

[0002] In the related art, in order to prevent the exhaust gas of the pump assembly of the compressor from leaking into the oil pool at the bottom of the compressor, a sealing structure 50' needs to be installed on the flange 40' of the pump assembly to play the role of exhaust sealing. Figure 1 As shown, when the pump body assembly is assembled, an end face pressure ring 51' is protruded from the sealing structure 50', and the end face pressure ring 51' is used to abut against the end face of the flange 40' away from the cylinder. The sealing structure 50' is locked on the installation plane 411' of the flange 40' by the fastening force F0 applied by the fastener 60'.

[0003] However, the squeezing force F of the end face pressure ring 51' on the neck 42' of the flange 40' will cause the end face C' of the end 41' of the flange 40' away from the sealing structure 50' to be greatly convexly deformed, thereby causing the gap between the flange 40' and the cylinder to become smaller, which can easily cause abnormal wear of the rollers and / or crankshaft, and further reduce the performance and reliability of the compressor. Summary of the invention

[0004] The main purpose of the present invention is to provide a pump body assembly and a compressor to solve the problem in the prior art that the end face of the flange close to the cylinder is greatly deformed during sealing assembly, thereby reducing the performance of the compressor and the reliability of the compressor.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a pump body assembly is provided, including: a crankshaft; a cylinder, the cylinder sleeve is arranged on the eccentric part of the crankshaft; a flange, the flange sleeve is arranged on the crankshaft and is located on one side of the cylinder; a sealing structure, the sealing structure is connected to the flange, the sealing structure includes a first elastic part and a second elastic part connected to each other, the first elastic part abuts against the end face of the flange away from the cylinder, and the second elastic part extends into the flange and abuts against the flange.

[0006] Furthermore, a sealing groove is provided on the end surface of the flange away from the cylinder, and the second elastic portion extends into the sealing groove and abuts against the inner peripheral wall of the sealing groove.

[0007] Furthermore, the length of the second elastic portion extending into the sealing groove is H1, and the depth of the sealing groove is H2, wherein H1<H2.

[0008] Furthermore, the flange has a mounting hole; along the direction away from the cylinder, the mounting hole includes a first mounting hole section and a second mounting hole section that are connected, the diameter of the first mounting hole section is D0, and the diameter of the second mounting hole section is D1, wherein D0<D1; the flange is sleeved on the crankshaft through the first mounting hole section.

[0009] Furthermore, the depth of the second mounting hole section is H3, and the depth of the sealing groove is H2, wherein H3≥H2.

[0010] Further, the sealing groove is an annular groove arranged around the outer circumference of the second mounting hole section; the first elastic part is a flat plate part, and the second elastic part is an annular part.

[0011] Furthermore, the axis of the sealing groove, the axis of the second elastic portion and the axis of the mounting hole coincide with each other.

[0012] Furthermore, the flange includes a connected end and a neck, the end abuts against the cylinder, and a sealing groove is provided on the end surface of the neck away from the cylinder; the sealing structure includes a muffler and an elastic gasket, and the elastic gasket includes a first elastic part and a second elastic part; the outer periphery of the muffler is connected to the end through a fastener, the first elastic part abuts against the end surface of the neck away from the cylinder, and the inner periphery of the muffler is pressed on the first elastic part.

[0013] Furthermore, the outer diameter of the neck is D2, the diameter of the inner circumference of the muffler is D3, and the outer diameter of the first elastic portion is D4, wherein D2<D3<D4.

[0014] Furthermore, the flange includes a connected end, a neck and a surrounding portion, the end portion abuts against the cylinder, a sealing groove is provided on the end surface of the neck away from the cylinder, the surrounding portion is located on the outer peripheral side of the neck, and the end surface of the surrounding portion away from the cylinder is flush with the end surface of the neck away from the cylinder; the sealing structure includes an end cover and an elastic gasket, the elastic gasket includes a first elastic portion and a second elastic portion; the outer peripheral edge of the end cover is connected to the surrounding portion by a fastener, and the inner peripheral edge of the end cover is pressed on the first elastic portion.

[0015] Furthermore, the end cover has an assembly hole, and along the direction away from the cylinder, the assembly hole includes a first assembly hole section and a second assembly hole section that are connected; the diameter of the first assembly hole section is larger than the diameter of the second assembly hole section, and the first assembly hole section is used to accommodate the first elastic part; the outer diameter of the neck is D2, the outer diameter of the first elastic part is D4, and the diameter of the second assembly hole section is D5, wherein D2<D5<D4.

[0016] Further, the thickness of the first elastic portion is H4, and the depth of the first assembly hole section is H5, wherein H4>H5.

[0017] Furthermore, the first elastic portion and the second elastic portion are an integral structure.

[0018] Furthermore, the elastic gasket also includes a third elastic portion, which is protrudingly arranged on the first elastic portion, and the third elastic portion and the second elastic portion are located on both sides of the first elastic portion.

[0019] Furthermore, the first elastic portion, the second elastic portion and the third elastic portion are an integrated structure.

[0020] Furthermore, the flange includes a connected end and a neck, the end abuts against the cylinder, and a sealing groove is provided on the end surface of the neck away from the cylinder; the sealing structure includes a muffler, the muffler includes a connecting part, a first elastic part and a second elastic part, the connecting part is connected to the outer periphery of the first elastic part, and the second elastic part is connected to the inner periphery of the first elastic part; the connecting part is connected to the end through a fastener, and the first elastic part abuts against the end surface of the neck away from the cylinder.

[0021] Furthermore, the connecting portion, the first elastic portion and the second elastic portion are an integrated structure.

[0022] According to another aspect of the present invention, a compressor is provided. The compressor includes the above-mentioned pump body assembly.

[0023] By applying the technical solution of the present invention, the first elastic part of the sealing structure abuts against the end face of the flange away from the cylinder, and the second elastic part extends into the flange and abuts against the flange, thereby realizing the exhaust seal of the flange. When the first elastic part presses the flange, the first elastic part will undergo elastic deformation, and accordingly, the second elastic part extending into the flange will also undergo elastic deformation. Since the sealing structure can undergo elastic deformation, the squeezing force of the sealing structure on the flange will not be transmitted to the end face of the flange close to the cylinder, thereby greatly reducing the deformation of the end face of the flange close to the cylinder, avoiding abnormal wear of the roller and the crankshaft caused by the reduction of the space in the cylinder, which is beneficial to improving the performance and reliability of the pump body assembly and the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary 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:

[0025] Figure 1 A schematic diagram showing a flange in the prior art when it is deformed is shown;

[0026] Figure 2 A schematic structural diagram of a compressor according to Embodiment 1 of the present invention is shown;

[0027] Figure 3 Shows Figure 2 A schematic diagram of the assembly structure of the flange, the sealing structure and the fasteners of the compressor;

[0028] Figure 4 Shows Figure 3 Schematic diagram of the flange in the figure when it is deformed, wherein the end surface C of the end of the flange away from the blocking structure has a small upward convex deformation;

[0029] Figure 5 Shows Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 6 Shows Figure 2 A schematic diagram of the structure of the elastic gasket of the sealing structure;

[0031] Figure 7 A schematic diagram of the assembly structure of a flange, a sealing structure and a fastener according to the second embodiment of the present invention is shown;

[0032] Figure 8 Shows Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0033] Fig. 9 A schematic diagram of the assembly structure of a flange, a sealing structure and a fastener according to Embodiment 3 of the present invention is shown;

[0034] Fig.10 A schematic diagram of the assembly structure of a flange, a sealing structure and a fastener according to a fourth embodiment of the present invention is shown.

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

[0036] 10. crankshaft; 11. eccentric portion; 20. cylinder; 40. flange; 41. end portion; 411. mounting plane; 42. neck; 421. sealing groove; 422. inner peripheral wall; 423. mounting hole; 424. first mounting hole section; 425. second mounting hole section; 43. enclosure; 50. blocking structure; 501. first elastic portion; 502. second elastic portion; 503. third elastic portion; 504 , connecting part; 51, muffler; 52, elastic gasket; 53, end cover; 531, assembly hole; 532, first assembly hole section; 533, second assembly hole section; 60, fastener; 70, roller; 80, slide; 90, partition; 100, pump body assembly; 200, housing; 300, upper cover assembly; 400, lower cover; 500, motor rotor; 600, motor stator; 700, dispenser component. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to solve the problem in the prior art that the flange end surface near the cylinder is greatly deformed during sealing assembly, thereby reducing the performance and reliability of the compressor, the present invention provides a pump body assembly and a compressor. The compressor includes the above-mentioned and the following pump body assemblies.

[0039] Optionally, the compressor provided in the present application may be a single-cylinder compressor or a multi-cylinder compressor or a multi-stage compressor or a vertical compressor or a bedroom compressor.

[0040] Optionally, the compressor provided in the present application can be applied to an air-conditioning system.

[0041] Embodiment 1

[0042] like Figure 2 As shown, this embodiment provides a double-cylinder vertical compressor for use in an air-conditioning system, and the compressor includes a pump body assembly 100, a housing 200, an upper cover assembly 300, a lower cover 400, a motor rotor 500, a motor stator 600, and a liquid distributor component 700. Among them, an exhaust pipe is provided on the upper cover assembly 300, the upper cover assembly 300 is fixed to the upper end of the housing 200, and the lower cover 400 is fixed to the lower end of the housing 200 to form a sealed space. The motor stator 600 is fixed in the housing 200, and the motor rotor 500 is fixed on the crankshaft 10 of the pump body assembly 100 and is placed in the inner hole of the motor stator 600 to provide a rotational driving force for the pump body assembly 100. The liquid distributor component 700 is connected to the pump body assembly 100 to provide inhaled refrigerant. The pump body assembly 100 is welded and fixed to the inner wall of the housing 200. The pump body assembly 100 includes a crankshaft 10, two cylinders 20, two flanges 40, a blocking structure 50, a fastener 60, two rollers 70, a slide 80, and a partition 90. The crankshaft 10 includes two eccentric parts 11, each eccentric part 11 is sleeved with a cylinder 20, the partition 90 is sleeved on the crankshaft 10 and located between the two cylinders 20, the two cylinders 20 include an upper cylinder and a lower cylinder, the two flanges 40 are respectively an upper flange and a lower flange, the upper flange is located above the upper cylinder, the lower flange is located below the lower cylinder, and the blocking structure 50 is provided below the lower flange. The two rollers 70 include an upper roller and a lower roller, which are sleeved on the two eccentric parts 11 of the crankshaft 10 and are respectively located in the upper cylinder and the lower cylinder; the slide 80 is respectively installed in the upper cylinder and the lower cylinder and abuts against the upper roller and the lower roller. When the compressor is running, refrigerant is sucked in from the liquid distributor component 700, and the refrigerant enters the cylinder 20 for compression. The compressed high-pressure refrigerant enters the cavity of the shell 200, and enters the upper cavity of the motor through the flow hole between the motor stator 600 and the motor rotor 500. The refrigerant is finally discharged from the exhaust pipe of the upper cover assembly 300 to the outside of the compressor and enters the air-conditioning system.

[0043] like Figures 2 to 6As shown, the pump body assembly includes a crankshaft 10, a cylinder 20, a flange 40 and a sealing structure 50. The cylinder 20 is sleeved on the eccentric portion 11 of the crankshaft 10. The flange 40 is sleeved on the crankshaft 10 and is located on one side of the cylinder 20. The sealing structure 50 is connected to the flange 40. The sealing structure 50 includes a first elastic portion 501 and a second elastic portion 502 that are connected to each other. The first elastic portion 501 abuts against the end face of the flange 40 away from the cylinder 20, and the second elastic portion 502 extends into the flange 40 and abuts against the flange 40.

[0044] In this embodiment, the first elastic part 501 of the sealing structure 50 abuts against the end face of the flange 40 away from the cylinder 20, and the second elastic part 502 extends into the flange 40 and abuts against the flange 40, thereby realizing the exhaust seal of the flange 40. When the first elastic part 501 presses the flange 40, the first elastic part 501 will undergo elastic deformation, and accordingly, the second elastic part 502 extending into the flange 40 will also undergo elastic deformation; since the sealing structure 50 can undergo elastic deformation, it can play a buffering role and will not transmit the squeezing force of the sealing structure 50 on the flange 40 to the end face of the flange 40 close to the cylinder 20. Figure 1 Compared with the pump body assembly in the prior art shown, the deformation of the end surface C of the flange 40 close to the cylinder 20 in this embodiment is greatly reduced, thereby avoiding abnormal wear of the roller 70 and the crankshaft 10 caused by the reduction of the space in the cylinder 20, which is beneficial to improving the performance and reliability of the pump body assembly 100 and the compressor.

[0045] The sealed connection between the flange 40 and the sealing structure 50 of the pump body assembly provided in this embodiment does not require complex processes such as laser welding, thereby avoiding large thermal deformation caused by laser welding when the flange 40 and the sealing structure 50 are connected, and the production cost of the pump body assembly is relatively low.

[0046] like Figure 3 As shown, the end surface of the flange 40 away from the cylinder 20 is provided with a sealing groove 421, and the second elastic part 502 extends into the sealing groove 421 and abuts against the inner peripheral wall 422 of the sealing groove 421. This embodiment reasonably utilizes the deformation direction of the first elastic part 501 and the deformation direction of the second elastic part 502, so that the second elastic part 502 abuts against the inner peripheral wall 422 of the sealing groove 421, and converts the extrusion force applied by the first elastic part 501 to the flange 40 extending along the axial direction thereof into an extrusion force extending along the radial direction thereof, thereby greatly reducing the deformation of the end surface C of the flange 40 close to the cylinder 20.

[0047] like Figure 3As shown, the flange 40 includes an end 41 and a neck 42 connected to each other, the end 41 abuts against the cylinder 20, and the end surface of the neck 42 away from the cylinder 20 has a sealing groove 421; the blocking structure 50 includes a muffler 51 and an elastic gasket 52, and the elastic gasket 52 includes a first elastic portion 501 and a second elastic portion 502; the outer periphery of the muffler 51 is connected to the mounting plane 411 of the end 41 through a fastener 60, the first elastic portion 501 abuts against the end surface of the neck 42 away from the cylinder 20, and the inner periphery of the muffler 51 is pressed on the first elastic portion 501. Figure 4 and Figure 5 As shown, under the action of the pressing force F0 of the fastener 60, the end face of the muffler 51 presses the first elastic part 501 of the elastic gasket 52 with the extrusion force F1, and the first elastic part 501 will be elastically deformed to achieve the sealing between the muffler 51 and the elastic gasket 52. At the same time, the elastic force of the first elastic part 501 will be transmitted to the second elastic part 502, and the second elastic part 502 will generate the force F2 and press the inner circumferential wall 422 of the sealing groove 421 of the flange 40 to achieve the sealing between the elastic gasket 52 and the flange 40. In this way, the direction of the force is changed, and the axial extrusion force F0 applied by the fastener 60 on the muffler 51 will not be transmitted to the end face C of the flange 40 close to the cylinder 20, and the end face C of the end 41 of the flange 40 away from the blocking structure 50 has little convex deformation or even no deformation, thereby effectively improving the performance of the pump body assembly 100 and the performance and reliability of the compressor. The muffler 51 can also reduce noise, thereby further improving the performance of the compressor.

[0048] Optionally, the first elastic part 501 and the second elastic part 502 are an integrated structure. In this way, the production efficiency of the elastic gasket 52 is high and the reliability is good. When the first elastic part 501 and the second elastic part 502 of the elastic gasket 52 are deformed, the connection between the first elastic part 501 and the second elastic part 502 is not easy to break, which is conducive to the assembly of the pump body assembly 100, thereby facilitating the improvement of the production efficiency of the compressor.

[0049] like Figure 3 As shown, the length of the second elastic part 502 extending into the sealing groove 421 is H1, and the depth of the sealing groove 421 is H2, wherein H1<H2. In this way, after the second elastic part 502 extends into the sealing groove 421, it is spaced apart from the groove bottom wall of the sealing groove 421, providing sufficient space for the second elastic part 502 to undergo elastic deformation. When the second elastic part 502 undergoes elastic deformation, it is possible to avoid the second elastic part 502 from contacting the groove bottom wall of the sealing groove 421 and transferring part of the force to the end face C of the flange 40 close to the cylinder 20, thereby further reducing the deformation of the end face C of the flange 40 close to the cylinder 20.

[0050] like Figure 3As shown, the flange 40 has a mounting hole 423; in the direction away from the cylinder 20, the mounting hole 423 includes a first mounting hole section 424 and a second mounting hole section 425 that are connected, the diameter of the first mounting hole section 424 is D0, and the diameter of the second mounting hole section 425 is D1, wherein D0<D1; the flange 40 is sleeved on the crankshaft 10 through the first mounting hole section 424. The provision of the second mounting hole section 425 can cause the neck 42 of the flange 40 to deform appropriately, thereby playing a buffering role for the force F2, and because the diameter D1 of the second mounting hole section 425 is larger, the second mounting hole section 425 can also play a role of giving way, avoiding interference between the corresponding part of the neck 42 and the crankshaft 10 when deformed, thereby further improving the performance of the pump body assembly 100.

[0051] like Figure 3 As shown, the depth of the second mounting hole section 425 is H3, and the depth of the sealing groove 421 is H2, wherein H3≥H2>H1. In this way, the neck 42 of the flange 40 is prevented from being deformed and interfering with the crankshaft 10 due to the force F2 applied to the neck 42 of the flange 40 when the second elastic portion 502 is elastically deformed.

[0052] Optionally, the sealing groove 421 is an annular groove arranged around the outer circumference of the second mounting hole section 425; Figure 6 As shown, the first elastic part 501 is a flat plate part, and the second elastic part 502 is an annular part. In this way, the contact area between the blocking structure 50 and the flange 40 is larger, the connection between the blocking structure 50 and the flange 40 is more stable, and the sealing effect is better.

[0053] Optionally, the axis of the sealing groove 421, the axis of the second elastic portion 502 and the axis of the mounting hole 423 coincide with each other. In this way, it is possible to ensure that the forces are relatively balanced in the circumferential direction of the crankshaft 10, and avoid abnormal wear of the pump body assembly 100.

[0054] like Figure 3 As shown, the outer diameter of the neck 42 is D2, the diameter of the inner circumference of the muffler 51 is D3, and the outer diameter of the first elastic part 501 is D4, wherein D2<D3<D4, thereby ensuring that the first elastic part 501 can undergo elastic deformation under the extrusion of the muffler 51 and reduce the extrusion force applied by the first elastic part 501 to the flange 40 along its axial extension.

[0055] exist Figures 2 to 6 In the illustrated embodiment, the flange 40 is a lower flange, the muffler 51 is a lower muffler, and the elastic gasket 52 is a lower elastic gasket. The lower muffler seals the exhaust of the lower flange so that the exhaust gas does not enter the oil pool of the compressor and plays a muffler role.

[0056] In an optional embodiment not shown in the figure of the present application, a sealing groove may also be provided on the upper flange, and the pump body assembly 100 also includes an upper muffler, which seals the exhaust of the upper flange to prevent the exhaust gas from entering the oil pool of the compressor and at the same time plays a silencing role.

[0057] Embodiment 2

[0058] The difference between the second embodiment and the first embodiment is that Figure 7 and Figure 8 As shown, the elastic gasket 52 further includes a third elastic portion 503, which is protrudingly arranged on the first elastic portion 501, and the third elastic portion 503 and the second elastic portion 502 are located on both sides of the first elastic portion 501. The muffler 51 abuts against the third elastic portion 503. Due to the arrangement of the third elastic portion 503, the thickness of the elastic gasket 52 at the position where it cooperates with the muffler 51 is relatively thick, and the thickness at the position where it cooperates with the flange 40 is relatively thin, which is conducive to the elastic deformation of the first elastic portion 501.

[0059] Optionally, the first elastic part 501, the second elastic part 502 and the third elastic part 503 are an integrated structure. In this way, the production efficiency of the elastic gasket 52 is high and the reliability is good. When the first elastic part 501, the second elastic part 502 and the third elastic part 503 of the elastic gasket 52 are deformed, the connection between the first elastic part 501, the second elastic part 502 and the third elastic part 503 is not easy to break, which is conducive to the assembly of the pump body assembly 100, thereby facilitating the improvement of the production efficiency of the compressor.

[0060] Embodiment 3

[0061] The difference between the third embodiment and the first embodiment is that the compressor is a variable capacity compressor or a multi-stage compressor, and the exhaust of the flange is no longer sealed by a muffler, but by an end cover. Fig. 9As shown, the flange 40 includes an end portion 41, a neck portion 42 and a surrounding portion 43 that are connected to each other. The end portion 41 abuts against the cylinder 20. A sealing groove 421 is provided on the end surface of the neck portion 42 away from the cylinder 20. The surrounding portion 43 is located on the outer peripheral side of the neck portion 42. The end surface of the surrounding portion 43 away from the cylinder 20 is flush with the end surface of the neck portion 42 away from the cylinder 20. The sealing structure 50 includes an end cover 53 and an elastic gasket 52. The elastic gasket 52 includes a first elastic portion 501 and a second elastic portion 502. The outer peripheral edge of the end cover 53 is connected to the surrounding portion 43 by a fastener 60, and the inner peripheral edge of the end cover 53 is pressed on the first elastic portion 501. Similarly, under the action of the pressing force F0 of the fastener 60, the end face of the end cover 53 presses the first elastic part 501 of the elastic gasket 52 with an extrusion force F1, and the first elastic part 501 will undergo elastic deformation to achieve the sealing of the muffler 51 and the elastic gasket 52. At the same time, the elastic force of the first elastic part 501 will be transmitted to the second elastic part 502, and the second elastic part 502 will generate a force F2 and press the inner circumferential wall 422 of the sealing groove 421 of the flange 40 to achieve the sealing of the elastic gasket 52 and the flange 40. The direction of the force has changed, and the axial extrusion force F0 applied by the fastener 60 on the end cover 53 will not be transmitted to the end face C of the flange 40 close to the cylinder 20. The end face C of the end 41 of the flange 40 away from the sealing structure 50 has little convex deformation or even no deformation, thereby effectively improving the performance of the pump body assembly 100 and the performance and reliability of the compressor.

[0062] like Fig. 9 As shown, the end cover 53 has an assembly hole 531, and in the direction away from the cylinder 20, the assembly hole 531 includes a first assembly hole section 532 and a second assembly hole section 533 that are connected; the diameter of the first assembly hole section 532 is larger than the diameter of the second assembly hole section 533, and the first assembly hole section 532 is used to accommodate the first elastic part 501; the outer diameter of the neck 42 is D2, the outer diameter of the first elastic part 501 is D4, and the diameter of the second assembly hole section 533 is D5, wherein D2<D5<D4. , thereby ensuring that the first elastic part 501 can be elastically deformed under the extrusion of the end cover 53 and reducing the extrusion force applied by the first elastic part 501 to the flange 40 along its axial extension.

[0063] like Fig. 9 As shown, the thickness of the first elastic part 501 is H4, and the depth of the first assembly hole section 532 is H5, wherein H4>H5. In this way, reliable sealing between the first elastic part 501 and the end cover 53 can be ensured.

[0064] Optionally, the first elastic part 501 and the second elastic part 502 are an integrated structure. In this way, the production efficiency of the elastic gasket 52 is high and the reliability is good. When the first elastic part 501 and the second elastic part 502 of the elastic gasket 52 are deformed, the connection between the first elastic part 501 and the second elastic part 502 is not easy to break, which is conducive to the assembly of the pump body assembly 100, thereby facilitating the improvement of the production efficiency of the compressor.

[0065] In an optional embodiment not shown in the figure of the present application, the elastic gasket 52 further includes a third elastic portion 503, which is protrudingly arranged on the first elastic portion 501, and the third elastic portion 503 and the second elastic portion 502 are located on both sides of the first elastic portion 501. The end cover 53 abuts against the third elastic portion 503. Due to the arrangement of the third elastic portion 503, the thickness of the elastic gasket 52 at the position where it cooperates with the end cover 53 is relatively thick, and the thickness at the position where it cooperates with the flange 40 is relatively thin, which is conducive to the elastic deformation of the first elastic portion 501.

[0066] Embodiment 4

[0067] The difference between the fourth embodiment and the first embodiment is that the elastic gasket 52 is eliminated, and the structure of the muffler 51 is directly optimized so that the muffler 51 includes a first elastic portion 501 and a second elastic portion 502. Fig.10 As shown, the flange 40 includes an end 41 and a neck 42 connected to each other, the end 41 abuts against the cylinder 20, and a sealing groove 421 is provided on the end surface of the neck 42 away from the cylinder 20; the sealing structure 50 includes a muffler 51, and the muffler 51 includes a connecting portion 504, a first elastic portion 501 and a second elastic portion 502, the connecting portion 504 is connected to the outer periphery of the first elastic portion 501, and the second elastic portion 502 is connected to the inner periphery of the first elastic portion 501; the connecting portion 504 is connected to the end 41 through a fastener 60, and the first elastic portion 501 abuts against the end surface of the neck 42 away from the cylinder 20. Similarly, under the action of the pressing force F0 of the fastener 60, the connecting portion 504 of the muffler 51 causes the first elastic portion 501 to press the end face of the flange 40 away from the cylinder 20, and the first elastic portion 501 will undergo elastic deformation to achieve sealing between the muffler 51 and the end face of the flange 40 away from the cylinder 20. At the same time, the elastic force of the first elastic portion 501 will be transmitted to the second elastic portion 502, and the second elastic portion 502 will generate a force F2 and press the inner circumferential wall 422 of the sealing groove 421 of the flange 40 to achieve sealing between the elastic gasket 52 and the flange 40. The direction of the force has changed, and the axial extrusion force F0 applied by the fastener 60 on the muffler 51 will not be transmitted to the end face C of the flange 40 close to the cylinder 20. The end face C of the end 41 of the flange 40 away from the sealing structure 50 has little convex deformation or even no deformation, thereby effectively improving the performance of the pump body assembly 100 and the performance and reliability of the compressor.

[0068] The blocking structure 50 provided in this embodiment has a simpler structure and fewer parts, which is more conducive to improving the assembly efficiency and production cost of the pump body assembly 100 and the compressor.

[0069] Optionally, the connecting portion 504, the first elastic portion 501 and the second elastic portion 502 are an integrated structure. In this way, the muffler 51 has high production efficiency and good reliability. When the first elastic portion 501 and the second elastic portion 502 of the elastic gasket 52 are deformed, the connection between the connecting portion 504, the first elastic portion 501 and the second elastic portion 502 is not easy to break, which is conducive to the assembly of the pump body assembly 100, thereby facilitating the improvement of the production efficiency of the compressor.

[0070] like Fig.10 As shown, the connecting portion 504 includes a first connecting segment extending along the axial direction of the flange 40 and a second connecting segment extending along the radial direction of the flange 40, the first connecting segment is cylindrical, the second connecting segment is annular, one end of the first connecting segment is connected to the first elastic portion 501, and the other end of the first connecting segment is connected to the inner circumference of the second connecting segment, and the second connecting segment is provided with a fastening hole for connecting to the flange 40.

[0071] In an optional embodiment not shown in the figures of the present application, the connecting portion 504 includes a transition connecting section, a first connecting section extending along the axial direction of the flange 40 and a second connecting section extending along the radial direction of the flange 40, the first connecting section is cylindrical, the second connecting section is annular, one end of the first connecting section is connected to the first elastic portion 501 through the transition connecting section, the other end of the first connecting section is connected to the inner circumference of the second connecting section, and the second connecting section is provided with a fastening hole for connecting to the flange 40.

[0072] Optionally, the thickness of the transition connecting section is greater than the thickness of the first elastic portion 501 .

[0073] The present application seals the exhaust of the flange 40 through the first elastic part 501 and the second elastic part 502 of the sealing structure 50, effectively reducing the extrusion force exerted by the muffler or end cover in the prior art on the axial end face of the flange 40, greatly reducing the deformation of the end face C of the flange 40 close to the cylinder 20, ensuring the normal operation of the pump body assembly 100, and avoiding abnormal wear of the pump body assembly 100, which is beneficial to improving the performance and reliability of the pump body assembly and the compressor.

[0074] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0075] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0076] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0077] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0078] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pump assembly, characterized in that: include: Crankshaft (10); A cylinder (20), wherein the cylinder (20) is sleeved on the eccentric portion (11) of the crankshaft (10); A flange (40), wherein the flange (40) is sleeved on the crankshaft (10) and is located on one side of the cylinder (20); a plugging structure (50), the plugging structure (50) being connected to the flange (40), the plugging structure (50) comprising a first elastic portion (501) and a second elastic portion (502) being connected to each other, the first elastic portion (501) being in contact with an end surface of the flange (40) away from the cylinder (20), and the second elastic portion (502) extending into the flange (40) and in contact with the flange (40) to seal the exhaust of the flange (40); The flange (40) has a mounting hole (423); along a direction away from the cylinder (20), the mounting hole (423) includes a first mounting hole section (424) and a second mounting hole section (425) which are connected, the diameter of the first mounting hole section (424) being D0, and the diameter of the second mounting hole section (425) being D1, wherein D0<D1; the flange (40) is sleeved on the crankshaft (10) through the first mounting hole section (424); A sealing groove (421) is provided on the end surface of the flange (40) away from the cylinder (20), and the second elastic portion (502) extends into the sealing groove (421) and abuts against an inner peripheral wall (422) of the sealing groove (421); The depth of the second mounting hole section (425) is H3, and the depth of the sealing groove (421) is H2, wherein: H3≥H2.

2. The pump assembly according to claim 1, characterized in that: The length of the second elastic portion (502) extending into the sealing groove (421) is H1, and the depth of the sealing groove (421) is H2, wherein H1<H2.

3. The pump assembly according to claim 1, characterized in that: The sealing groove (421) is an annular groove arranged around the outer circumference of the second mounting hole section (425); the first elastic portion (501) is a flat plate portion, and the second elastic portion (502) is an annular portion.

4. The pump assembly according to claim 3, characterized in that: The axis of the sealing groove (421), the axis of the second elastic portion (502), and the axis of the mounting hole (423) coincide with each other.

5. The pump assembly according to claim 3, characterized in that: The flange (40) comprises an end portion (41) and a neck portion (42) connected to each other, the end portion (41) abuts against the cylinder (20), and the end surface of the neck portion (42) away from the cylinder (20) is provided with the sealing groove (421); The blocking structure (50) comprises a muffler (51) and an elastic gasket (52), and the elastic gasket (52) comprises the first elastic portion (501) and the second elastic portion (502); The outer circumference of the muffler (51) is connected to the end portion (41) via a fastener (60), the first elastic portion (501) abuts against the end surface of the neck (42) away from the cylinder (20), and the inner circumference of the muffler (51) is pressed onto the first elastic portion (501).

6. The pump assembly according to claim 5, characterized in that: The outer diameter of the neck (42) is D2, the diameter of the inner circumference of the muffler (51) is D3, and the outer diameter of the first elastic part (501) is D4, wherein D2<D3<D4.

7. The pump assembly according to claim 3, characterized in that: The flange (40) comprises an end portion (41), a neck portion (42) and a surrounding portion (43) which are connected to each other; the end portion (41) is in contact with the cylinder (20); the end surface of the neck portion (42) away from the cylinder (20) is provided with the sealing groove (421); the surrounding portion (43) is located on the outer peripheral side of the neck portion (42); the end surface of the surrounding portion (43) away from the cylinder (20) is flush with the end surface of the neck portion (42) away from the cylinder (20); The blocking structure (50) comprises an end cover (53) and an elastic gasket (52), and the elastic gasket (52) comprises the first elastic portion (501) and the second elastic portion (502); The outer circumference of the end cover (53) is connected to the enclosure portion (43) via a fastener (60), and the inner circumference of the end cover (53) is pressed onto the first elastic portion (501).

8. The pump assembly according to claim 7, characterized in that: The end cover (53) has an assembly hole (531), and along a direction away from the cylinder (20), the assembly hole (531) includes a first assembly hole section (532) and a second assembly hole section (533) that are connected; The diameter of the first assembly hole section (532) is greater than the diameter of the second assembly hole section (533), and the first assembly hole section (532) is used to accommodate the first elastic part (501); The outer diameter of the neck (42) is D2, the outer diameter of the first elastic portion (501) is D4, and the diameter of the second assembly hole section (533) is D5, wherein D2<D5<D4.

9. The pump assembly according to claim 8, characterized in that: The thickness of the first elastic portion (501) is H4, and the depth of the first assembly hole section (532) is H5, wherein H4>H5.

10. The pump assembly according to any one of claims 5 to 9, characterized in that: The first elastic part (501) and the second elastic part (502) are an integral structure.

11. The pump assembly according to any one of claims 5 to 9, characterized in that: The elastic gasket (52) further comprises a third elastic portion (503), wherein the third elastic portion (503) is protrudingly arranged on the first elastic portion (501), and the third elastic portion (503) and the second elastic portion (502) are located on both sides of the first elastic portion (501).

12. The pump assembly according to claim 11, characterized in that The first elastic portion (501), the second elastic portion (502) and the third elastic portion (503) are an integrated structure.

13. The pump assembly according to claim 3, characterized in that: The flange (40) comprises an end portion (41) and a neck portion (42) connected to each other, the end portion (41) abuts against the cylinder (20), and the end surface of the neck portion (42) away from the cylinder (20) is provided with the sealing groove (421); The blocking structure (50) includes a silencer (51), and the silencer (51) includes a connecting portion (504), the first elastic portion (501) and the second elastic portion (502), wherein the connecting portion (504) is connected to the outer peripheral edge of the first elastic portion (501), and the second elastic portion (502) is connected to the inner peripheral edge of the first elastic portion (501); the connecting portion (504) is connected to the end portion (41) via a fastener (60), and the first elastic portion (501) abuts against the end surface of the neck portion (42) away from the cylinder (20).

14. The pump assembly according to claim 13, characterized in that The connecting portion (504), the first elastic portion (501) and the second elastic portion (502) are an integrated structure.

15. A compressor, characterized in that: The compressor comprises the pump body assembly according to any one of claims 1 to 14.

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