CN210637236U - Pump body subassembly and compressor - Google Patents

Abstract

The utility model provides a pump body subassembly and compressor. Wherein, pump body subassembly includes: a crankshaft; the cylinder sleeve is arranged on the eccentric part of the crankshaft; the flange is sleeved on the crankshaft and is positioned on one side of the cylinder; plugging structure, plugging structure and flange joint, plugging structure are including the first elastic part and the second elastic part that are connected, the terminal surface butt of keeping away from the cylinder of first elastic part and flange, the second elastic part stretch into in the flange and with the flange butt. The technical scheme of the utility model the flange among the prior art is close to the protruding deformation of terminal surface of cylinder when seal assembly big to the problem that the reliability that leads to the performance reduction of compressor and compressor descends.

Description

Pump body subassembly and compressor

Technical Field

The utility model relates to a compression technology field particularly, relates to a pump body subassembly and compressor.

Background

In the related art, in order to prevent the exhaust gas of the pump body assembly of the compressor from leaking into the oil sump at the bottom of the compressor, the blocking structure 50 'needs to be installed on the flange 40' of the pump body assembly to perform the function of exhaust gas sealing. As shown in fig. 1, when the pump body assembly is assembled, the end face press ring 51 'is convexly arranged on the blocking structure 50', the end face press ring 51 'is used for abutting against the end face, far away from the air cylinder, of the flange 40', and the blocking structure 50 'is locked on the installation plane 411' of the flange 40 'through the fastening force F0 applied by the fastening piece 60'.

However, the pressing force F of the end face pressing ring 51 'to the neck portion 42' of the flange 40 'causes the end face C' of the end portion 41 'of the flange 40' far from the blocking structure 50 'to be deformed convexly, so that the gap between the flange 40' and the cylinder is reduced, which easily causes abnormal abrasion of the roller and/or the crankshaft, and further causes performance degradation and reliability degradation of the compressor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a pump body subassembly and compressor to the flange that solves among the prior art is close to the terminal surface arch deformation of cylinder when sealed assembly big, thereby leads to the performance reduction of compressor and the problem of the reliability decline of compressor.

In order to achieve the above object, according to an aspect of the present invention, there is provided a pump body assembly including: a crankshaft; the cylinder sleeve is arranged on the eccentric part of the crankshaft; the flange is sleeved on the crankshaft and is positioned on one side of the cylinder; plugging structure, plugging structure and flange joint, plugging structure are including the first elastic part and the second elastic part that are connected, the terminal surface butt of keeping away from the cylinder of first elastic part and flange, the second elastic part stretch into in the flange and with the flange butt.

Furthermore, the flange is provided with a sealing groove on the end face far away from the cylinder, and the second elastic part extends into the sealing groove and is abutted against the inner circumferential wall of the sealing groove.

Further, the length of the second elastic part extending into the sealing groove is H1, and the depth of the sealing groove is H2, wherein H1 < H2.

Further, the flange has a mounting hole; in the direction away from the cylinder, the mounting hole comprises a first mounting hole section and a second mounting hole section which are communicated, the diameter of the first mounting hole section is D0, the diameter of the second mounting hole section is D1, and D0 is less than D1; the flange is sleeved on the crankshaft through the first mounting hole section.

Furthermore, the depth of the second mounting hole section is H3, and the depth of the sealing groove is H2, wherein H3 is more than or equal to H2.

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

Further, the axis of the seal groove, the axis of the second elastic part and the axis of the mounting hole coincide.

Further, the flange comprises an end part and a neck part which are connected, the end part is abutted against the cylinder, and a sealing groove is formed in the end face, far away from the cylinder, of the neck part; the sealing structure comprises a silencer and an elastic gasket, and the elastic gasket comprises a first elastic part and a second elastic part; the periphery of muffler is followed and is passed through the fastener with the tip and be connected, and the terminal surface butt of keeping away from the cylinder of first elastic component and neck, and the pressure of the interior periphery of muffler is established on first elastic component.

Further, the outer diameter of the neck portion is D2, the diameter of the inner peripheral edge of the silencer is D3, and the outer diameter of the first elastic portion is D4, wherein D2 < D3 < D4.

Furthermore, the flange comprises an end part, a neck part and a surrounding part which are connected, the end part is abutted against the cylinder, a sealing groove is formed in the end face, far away from the cylinder, of the neck part, the surrounding part is located on the outer peripheral side of the neck part, and the end face, far away from the cylinder, of the surrounding part is flush with the end face, far away from the cylinder, of the neck part; the sealing structure comprises an end cover and an elastic gasket, wherein the elastic gasket comprises a first elastic part and a second elastic part; the outer peripheral edge of end cover passes through the fastener with enclosing fender portion and is connected, and the inner peripheral edge of end cover is established on first elastic component along the pressure.

Further, the end cover is provided with an assembly hole, and the assembly hole comprises a first assembly hole section and a second assembly hole section which are communicated in the direction away from the cylinder; the diameter of the first assembling hole section is larger than that of the second assembling hole section, and the first assembling hole section is used for accommodating the first elastic part; the outer diameter of the neck part is D2, the outer diameter of the first elastic part is D4, and the diameter of the second assembling hole section is D5, wherein D2 < D5 < D4.

Further, the thickness of the first elastic part is H4, and the depth of the first assembling hole section is H5, wherein H4 > H5.

Further, the first elastic part and the second elastic part are of an integral structure.

Further, the elastic gasket further comprises a third elastic part, the third elastic part is convexly arranged on the first elastic part, and the third elastic part and the second elastic part are positioned on two sides of the first elastic part.

Further, the first elastic part, the second elastic part and the third elastic part are of an integrated structure.

Further, the flange comprises an end part and a neck part which are connected, the end part is abutted against the cylinder, and a sealing groove is formed in the end face, far away from the cylinder, of the neck part; the blocking structure comprises a silencer, the silencer comprises a connecting part, a first elastic part and a second elastic part, the connecting part is connected with the outer peripheral edge of the first elastic part, and the second elastic part is connected with the inner peripheral edge of the first elastic part; connecting portion pass through fastener and end connection, the terminal surface butt of keeping away from the cylinder of first elastic component and neck.

Further, the connecting portion, the first elastic portion and the second elastic portion are of an integrated structure.

According to another aspect of the present invention, there is provided a compressor, comprising the above-mentioned pump body assembly.

Use the technical scheme of the utility model, the first elastic component of block structure and the terminal surface butt of keeping away from the cylinder of flange, second elastic component stretch into in the flange and with the flange butt to the realization is sealed to the exhaust of flange. When first elastic component extrudees the flange, elastic deformation can take place for first elastic component, correspondingly, stretch into in the flange second elastic component also can take place elastic deformation thereupon, because elastic deformation can take place for block structure, thereby can not transmit block structure extrusion force to the flange to the terminal surface that is close to the cylinder of flange, and then can reduce the deformation that the flange is close to the terminal surface of cylinder by a wide margin, avoid the cylinder inner space to diminish and lead to roller and bent axle to appear abnormal wear, be favorable to promoting the performance and the reliability of pump body subassembly and compressor.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic view of a prior art flange in a deformed state;

fig. 2 shows a schematic structural diagram of a compressor according to a first embodiment of the present invention;

FIG. 3 is a schematic view of an assembly of the flange, the blocking structure and the fasteners of the compressor of FIG. 2;

fig. 4 shows a schematic view of the flange of fig. 3 in a deformed state, in which the end face C of the flange remote from the end of the closure structure is deformed less convexly;

FIG. 5 shows an enlarged schematic view of the structure at A in FIG. 4;

fig. 6 shows a schematic structural view of the elastic pad of the plugging structure of fig. 2;

fig. 7 shows a schematic view of an assembly structure of a flange, a blocking structure and a fastener according to a second embodiment of the invention;

FIG. 8 shows an enlarged schematic view of the structure at B in FIG. 7;

fig. 9 shows a schematic view of an assembly structure of a flange, a blocking structure and a fastener according to a third embodiment of the invention;

fig. 10 shows an assembly structure diagram of a flange, a blocking structure and a fastener according to a fourth embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a crankshaft; 11. an eccentric portion; 20. a cylinder; 40. a flange; 41. an end portion; 411. a mounting plane; 42. a neck portion; 421. A sealing groove; 422. an inner peripheral wall; 423. mounting holes; 424. a first mounting hole section; 425. a second mounting hole section; 43. a surrounding baffle part; 50. a blocking structure; 501. a first elastic part; 502. a second elastic part; 503. a third elastic part; 504. a connecting portion; 51. a muffler; 52. an elastic pad; 53. an end cap; 531. an assembly hole; 532. a first assembly hole section; 533. a second assembly hole section; 60. a fastener; 70. a roller; 80. sliding blades; 90. a partition plate; 100. a pump body assembly; 200. a housing; 300. An upper cover assembly; 400. a lower cover; 500. a motor rotor; 600. a motor stator; 700. a dispenser component.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The protruding deformation of terminal surface near the cylinder is big when seal assembly in order to solve the flange among the prior art to lead to the performance reduction of compressor and the problem that the reliability of compressor descends, the utility model provides a pump body subassembly and compressor. Wherein, the compressor includes the above-mentioned pump body subassembly with the following.

Alternatively, the compressor provided by the application can be a single-cylinder compressor or a multi-stage compressor or a vertical compressor or a bedroom compressor.

Optionally, the compressor provided by the application can be applied to an air conditioning system.

Example one

As shown in fig. 2, the present embodiment provides a dual cylinder vertical compressor for an air conditioning system, the compressor including 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 dispenser part 700. Wherein, the upper cover assembly 300 is provided with an exhaust pipe, the upper cover assembly 300 is fixed at the upper end of the case 200, and the lower cover 400 is fixed at the lower end of the case 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 disposed in the inner hole of the motor stator 600 to provide a rotational driving force for the pump body assembly 100. The dispenser assembly 700 is connected to the pump body assembly 100 to provide suction of refrigerant. The pump body assembly 100 is welded and fixed to the inner wall of the housing 200. The pump block assembly 100 includes a crankshaft 10, two cylinders 20, two flanges 40, a blocking structure 50, fasteners 60, two rollers 70, a slide 80, and a diaphragm 90. Crankshaft 10 includes two eccentric portions 11, and the periphery cover of every eccentric portion 11 is equipped with a cylinder 20, and baffle 90 cover is established on crankshaft 10 and is located between two cylinders 20, and two cylinders 20 include cylinder and lower cylinder, and two flanges 40 are upper flange and lower flange respectively, and the upper flange is located the top of cylinder, and the lower flange is located the below of cylinder down, and the below of lower flange is provided with block structure 50. The two rollers 70 include an upper roller and a lower roller, which are respectively sleeved on the two eccentric parts 11 of the crankshaft 10 and respectively located in the upper cylinder and the lower cylinder; the slide plate 80 is installed in the upper cylinder and the lower cylinder, respectively, and abuts against the upper roller and the lower roller. When the compressor is operated, the refrigerant is sucked from the liquid separator 700, and enters the cylinder 20 to be compressed, and the compressed high-pressure refrigerant enters the cavity of the housing 200 and enters the cavity at the upper part of the motor through the circulation hole between the motor stator 600 and the motor rotor 500, and finally is discharged out of the compressor through the discharge pipe of the upper cover assembly 300 and enters the air conditioning system.

As shown in fig. 2 to 6, the pump body assembly includes a crankshaft 10, a cylinder 20, a flange 40 and a blocking 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 located on one side of the cylinder 20, the blocking structure 50 is connected with the flange 40, the blocking structure 50 includes a first elastic portion 501 and a second elastic portion 502 which are connected, the first elastic portion 501 abuts against an end surface of the flange 40, which is far away from the cylinder 20, and the second elastic portion 502 extends into the flange 40 and abuts against the flange 40.

In the present embodiment, the first elastic portion 501 of the blocking structure 50 abuts against the end surface 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, thereby achieving the exhaust sealing of the flange 40. When the first elastic portion 501 presses the flange 40, the first elastic portion 501 elastically deforms, and accordingly, the second elastic portion 502 extending into the flange 40 elastically deforms; because the blocking structure 50 can be elastically deformed, the buffer effect can be achieved, and the pressing force of the blocking structure 50 to the flange 40 is not transmitted to the end face, close to the cylinder 20, of the flange 40. Compared with the pump body assembly in the prior art shown in fig. 1, the deformation of the flange 40 near the end face C of the cylinder 20 in the present embodiment is greatly reduced, so as to avoid 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.

The sealing connection between the flange 40 and the plugging structure 50 of the pump body assembly provided by the embodiment does not need to adopt complex processes such as laser welding and the like, so that the large thermal deformation caused by the laser welding when the flange 40 and the plugging structure 50 are connected is avoided, and the production cost of the pump body assembly is low.

As shown in fig. 3, the flange 40 has a seal groove 421 on an end surface thereof remote from the cylinder 20, and the second elastic portion 502 extends into the seal groove 421 and abuts against an inner peripheral wall 422 of the seal groove 421. In the present embodiment, the deformation direction of the first elastic portion 501 and the deformation direction of the second elastic portion 502 are reasonably utilized, the second elastic portion 502 is brought into contact with the inner circumferential wall 422 of the seal groove 421, and the pressing force applied to the flange 40 by the first elastic portion 501 and extending in the axial direction thereof is converted into the pressing force extending in the radial direction thereof, so that the deformation of the flange 40 near the end surface C of the cylinder 20 is greatly reduced.

As shown in fig. 3, the flange 40 includes an end portion 41 and a neck portion 42 connected to each other, the end portion 41 abuts against the cylinder 20, and an end surface of the neck portion 42 away from the cylinder 20 has a seal groove 421; the blocking structure 50 comprises a silencer 51 and an elastic pad 52, and the elastic pad 52 comprises a first elastic part 501 and a second elastic part 502; the outer peripheral edge of muffler 51 is connected to mounting surface 411 of end portion 41 by fastener 60, first elastic portion 501 abuts against the end surface of neck portion 42 away from cylinder 20, and the inner peripheral edge of muffler 51 is pressed against first elastic portion 501. As shown in fig. 4 and 5, the muffler 51 presses the end surface of the muffler 51 against the first elastic portion 501 of the elastic gasket 52 with a pressing force F1 under the action of a pressing force F0 of the fastener 60, the first elastic portion 501 is elastically deformed, and the muffler 51 and the elastic gasket 52 are sealed, meanwhile, the elastic force of the first elastic portion 501 is transmitted to the second elastic portion 502, and the second elastic portion 502 generates a force F2 and presses the inner peripheral wall 422 of the sealing groove 421 of the flange 40, so that the elastic gasket 52 and the flange 40 are sealed. Thus, the direction of the acting force is changed, the axial pressing force F0 exerted on the muffler 51 by the fastener 60 is not transmitted to the end face C of the flange 40 close to the cylinder 20, and the end face C of the end portion 41 of the flange 40 far from the blocking structure 50 is deformed little or even not deformed, so that the performance of the pump body assembly 100 is effectively improved, and the performance and the reliability of the compressor are improved. The muffler 51 also reduces noise, thereby further improving the performance of the compressor.

Alternatively, the first elastic portion 501 and the second elastic portion 502 are of an integral structure. Like this, the production efficiency of resilient pad 52 is high and the good reliability, and when the first elastic component 501 and the second elastic component 502 of resilient pad 52 take place deformation, the fracture is difficult to take place in the junction of first elastic component 501 and second elastic component 502, is favorable to the assembly of pump body subassembly 100 to be favorable to promoting the production efficiency of compressor.

As shown in fig. 3, 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. In this way, the second elastic portion 502 is disposed at an interval between the groove bottom wall of the sealing groove 421 and the position after extending into the sealing groove 421, so as to provide a sufficient space for the second elastic portion 502 to elastically deform, and when the second elastic portion 502 elastically deforms, the second elastic portion 502 can be prevented from contacting the groove bottom wall of the sealing groove 421 and transmitting a part of force to the end surface C, close to the cylinder 20, of the flange 40, so that deformation of the flange 40, close to the end surface C of the cylinder 20, is further reduced.

As shown in fig. 3, the flange 40 has mounting holes 423; in the direction away from the cylinder 20, the mounting hole 423 comprises a first mounting hole section 424 and a second mounting hole section 425 which are communicated, the diameter of the first mounting hole section 424 is D0, the diameter of the second mounting hole section 425 is D1, wherein D0 < D1; the flange 40 is fitted over the crankshaft 10 through the first mounting hole section 424. The neck 42 of the flange 40 can be properly deformed by the second mounting hole section 425, so that the buffer effect on the acting force F2 is achieved, and the diameter D1 of the second mounting hole section 425 is large, so that the second mounting hole section 425 can also achieve the abdicating effect, the interference with the crankshaft 10 when the corresponding part of the neck 42 is deformed is avoided, and the performance of the pump body assembly 100 is further improved.

As shown in FIG. 3, 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. Thus, the neck portion 42 of the flange 40 is prevented from being deformed and interfering with the crankshaft 10 by the force F2 applied to the neck portion 42 of the flange 40 when the second elastic portion 502 is elastically deformed.

Alternatively, sealing groove 421 is an annular groove disposed around the outer peripheral side of second mounting hole section 425; as shown in fig. 6, the first elastic portion 501 is a flat plate portion, and the second elastic portion 502 is an annular portion. 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.

Alternatively, the axis of the sealing groove 421, the axis of the second elastic part 502, and the axis of the mounting hole 423 coincide. In this way, the acting forces are ensured to be balanced in the circumferential direction of the crankshaft 10, and abnormal wear of the pump body assembly 100 is avoided.

As shown in fig. 3, the outer diameter of the neck portion 42 is D2, the diameter of the inner circumferential edge of the silencer 51 is D3, and the outer diameter of the first elastic portion 501 is D4, where D2 < D3 < D4, so as to ensure that the first elastic portion 501 can be elastically deformed under the compression of the silencer 51 and reduce the compression force of the first elastic portion 501 on the flange 40 extending in the axial direction thereof.

In the embodiment shown in fig. 2 to 6, the flange 40 is a lower flange, the silencer 51 is a lower silencer, and the elastic pad 52 is a lower elastic pad. The lower silencer seals the exhaust of the lower flange, so that the exhausted gas cannot enter an oil pool of the compressor, and meanwhile, the silencing effect is achieved.

In an optional embodiment of the present application, the upper flange may also be provided with a sealing groove, and the pump body assembly 100 further includes an upper muffler, where the upper muffler seals the exhaust gas of the upper flange, so that the exhaust gas does not enter the oil sump of the compressor, and simultaneously performs a sound deadening function.

Example two

The second embodiment is different from the first embodiment in that, as shown in fig. 7 and 8, the elastic pad 52 further includes a third elastic portion 503, the third elastic portion 503 is convexly provided 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 part 503, and due to the third elastic part 503, the thickness of the position where the elastic gasket 52 is engaged with the muffler 51 is relatively thick, and the thickness of the position where the elastic gasket is engaged with the flange 40 is relatively thin, which is beneficial for the first elastic part 501 to generate elastic deformation.

Alternatively, the first elastic part 501, the second elastic part 502 and the third elastic part 503 are an integral structure. Like this, the production efficiency of elastic gasket 52 is high and the good reliability, and when first elastic component 501, second elastic component 502 and third elastic component 503 of elastic gasket 52 took place to warp, the fracture was difficult to take place in the junction of first elastic component 501, second elastic component 502 and third elastic component 503, was favorable to the assembly of pump body subassembly 100 to be favorable to promoting the production efficiency of compressor.

EXAMPLE III

The third embodiment is different from the first embodiment in that the compressor is a variable-capacity compressor or a multi-stage compressor, and the exhaust gas of the flange is sealed by an end cover instead of a silencer. As shown in fig. 9, the flange 40 includes an end 41, a neck portion 42, and a surrounding portion 43, which are connected, the end 41 abuts against the cylinder 20, a sealing groove 421 is formed on an end surface of the neck portion 42 away from the cylinder 20, the surrounding portion 43 is located on an outer peripheral side of the neck portion 42, and an end surface of the surrounding portion 43 away from the cylinder 20 is flush with an end surface of the neck portion 42 away from the cylinder 20; the blocking structure 50 comprises an end cap 53 and an elastic pad 52, wherein the elastic pad 52 comprises a first elastic part 501 and a second elastic part 502; the outer peripheral edge of the end cap 53 is connected to the surrounding stop portion 43 by a fastener 60, and the inner peripheral edge of the end cap 53 is pressed against the first elastic portion 501. Similarly, the end cover 53 presses the end face of the end cover 53 against the first elastic part 501 of the elastic pad 52 with a pressing force F1 under the pressing force F0 of the fastener 60, the first elastic part 501 is elastically deformed, the muffler 51 is sealed with the elastic pad 52, meanwhile, the elastic force of the first elastic part 501 is transmitted to the second elastic part 502, the second elastic part 502 generates an acting force F2 and presses against the inner peripheral wall 422 of the sealing groove 421 of the flange 40, so as to seal the elastic gasket 52 with the flange 40, the direction of the acting force is changed, the axial pressing force F0 exerted on the end cover 53 by the fastener 60 is not transmitted to the end face C of the flange 40 close to the cylinder 20, the end face C of the end part 41 of the flange 40 far away from the blocking structure 50 is deformed little or even not deformed, thereby effectively improving the performance of the pump body assembly 100 and improving the performance and reliability of the compressor.

As shown in fig. 9, the end cover 53 has a fitting hole 531, and the fitting hole 531 includes a first fitting hole section 532 and a second fitting hole section 533 communicating with each other in a direction away from the cylinder 20; the first fitting hole section 532 has a diameter larger than that of the second fitting hole section 533, the first fitting hole section 532 being for accommodating the first elastic part 501; the outer diameter of the neck portion 42 is D2, the outer diameter of the first elastic portion 501 is D4, and the diameter of the second assembling hole section 533 is D5, wherein D2 < D5 < D4, so as to ensure that the first elastic portion 501 can be elastically deformed under the compression of the end cover 53 and reduce the compression force applied by the first elastic portion 501 to the flange 40 along the axial extension thereof.

As shown in fig. 9, the thickness of the first elastic part 501 is H4, and the depth of the first fitting hole segment 532 is H5, where H4 > H5. In this way, reliable sealing between the first elastic portion 501 and the end cap 53 can be ensured.

Alternatively, the first elastic portion 501 and the second elastic portion 502 are of an integral structure. Like this, the production efficiency of resilient pad 52 is high and the good reliability, and when the first elastic component 501 and the second elastic component 502 of resilient pad 52 take place deformation, the fracture is difficult to take place in the junction of first elastic component 501 and second elastic component 502, is favorable to the assembly of pump body subassembly 100 to be favorable to promoting the production efficiency of compressor.

In an alternative embodiment of the present application, which is not shown in the drawings, the elastic pad 52 further includes a third elastic portion 503, the third elastic portion 503 is convexly disposed 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 cap 53 abuts against the third elastic portion 503, and due to the arrangement of the third elastic portion 503, the thickness of the position where the elastic gasket 52 is engaged with the end cap 53 is relatively thick, and the thickness of the position where the elastic gasket is engaged with the flange 40 is relatively thin, which is beneficial for the elastic deformation of the first elastic portion 501.

Example four

The fourth embodiment is different from the first embodiment in that the elastic pad 52 is eliminated, and the structure of the muffler 51 is directly optimized, so that the muffler 51 includes the first elastic portion 501 and the second elastic portion 502. As shown in fig. 10, the flange 40 includes an end portion 41 and a neck portion 42 connected to each other, the end portion 41 abuts against the cylinder 20, and an end surface of the neck portion 42 away from the cylinder 20 has a seal groove 421; the blocking structure 50 includes a silencer 51, the silencer 51 includes a connecting portion 504, a first elastic portion 501 and a second elastic portion 502, the connecting portion 504 is connected with an outer peripheral edge of the first elastic portion 501, and the second elastic portion 502 is connected with an inner peripheral edge of the first elastic portion 501; the connecting portion 504 is connected to the end portion 41 by the fastener 60, and the first elastic portion 501 abuts on an end surface of the neck portion 42 away from the cylinder 20. Similarly, the connecting portion 504 of the muffler 51 presses the first elastic portion 501 against the end surface of the flange 40 far from the cylinder 20 under the action of the pressing force F0 of the fastening member 60, the first elastic portion 501 elastically deforms to seal between the muffler 51 and the end surface of the flange 40 far from the cylinder 20, meanwhile, the elastic force of the first elastic portion 501 is transmitted to the second elastic portion 502, the second elastic portion 502 generates a force F2 and presses the inner peripheral wall 422 of the sealing groove 421 of the flange 40 to seal the elastic gasket 52 with the flange 40, the direction of the force changes, the axial pressing force F0 exerted by the fastening member 60 on the muffler 51 is not transmitted to the end surface C of the flange 40 near the cylinder 20, the end surface C of the flange 40 far from the end 41 of the blocking structure 50 deforms slightly or even does not deform, and thus effectively improving the performance of the pump body assembly 100, the performance and reliability of the compressor are improved.

The structure of the blocking structure 50 provided by the embodiment is simpler, and the number of parts is less, so that the assembly efficiency and the production cost of the pump body assembly 100 and the compressor can be improved.

Alternatively, the connecting portion 504, the first elastic portion 501 and the second elastic portion 502 are an integral structure. Like this, the production efficiency of muffler 51 is high and the good reliability, and when the first elastic component 501 and the second elastic component 502 of elastic gasket 52 took place to warp, the junction of connecting portion 504, first elastic component 501 and second elastic component 502 was difficult to the fracture, was favorable to the assembly of pump body subassembly 100 to be favorable to promoting the production efficiency of compressor.

As shown in fig. 10, the connection portion 504 includes a first connection section extending in the axial direction of the flange 40 and a second connection section extending in the radial direction of the flange 40, the first connection section is in a cylindrical shape, the second connection section is in an annular shape, one end of the first connection section is connected to the first elastic portion 501, the other end of the first connection section is connected to the inner circumferential edge of the second connection section, and the second connection section is provided with a fastening hole for connecting to the flange 40.

In an alternative embodiment of the present application, the connection portion 504 includes a transition connection section, a first connection section extending along an axial direction of the flange 40, and a second connection section extending along a radial direction of the flange 40, the first connection section is cylindrical, the second connection section is annular, one end of the first connection section is connected to the first elastic portion 501 through the transition connection section, the other end of the first connection section is connected to an inner circumferential edge of the second connection section, and the second connection section is provided with a fastening hole for connecting to the flange 40.

Optionally, the thickness of the transition connection segment is greater than the thickness of the first resilient portion 501.

This application seals the exhaust of flange 40 through first elastic component 501 and second elastic component 502 of block structure 50, has slowed down the extrusion force that muffler or end cover among the prior art applyed to the axial terminal surface of flange 40 effectively, has reduced the deformation that flange 40 is close to the terminal surface C of cylinder 20 by a wide margin, guarantees the normal operating of pump body subassembly 100, avoids pump body subassembly 100 to appear abnormal wear to be favorable to promoting the performance and the reliability of pump body subassembly and compressor.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (18)

1. A pump body assembly, comprising:

a crankshaft (10);

the air cylinder (20), the said air cylinder (20) is fitted over the eccentric portion (11) of the said crankshaft (10);

the flange (40), the said flange (40) is fitted over the said crankshaft (10) and located on one side of the said cylinder (20);

the blocking structure (50), the blocking structure (50) with flange (40) are connected, blocking structure (50) are including the first elastic part (501) and the second elastic part (502) that are connected, first elastic part (501) with the terminal surface of flange (40) keeping away from cylinder (20) butt, second elastic part (502) stretch into in flange (40) and with flange (40) butt.

2. The pump body assembly according to claim 1, wherein an end face of the flange (40) remote from the cylinder (20) has a seal groove (421), and the second elastic portion (502) extends into the seal groove (421) and abuts against an inner peripheral wall (422) of the seal groove (421).

3. The pump body assembly according to claim 2, wherein the second resilient portion (502) extending into the sealing groove (421) has a length H1, and the sealing groove (421) has a depth H2, wherein H1 < H2.

4. The pump body assembly according to claim 2 or 3,

the flange (40) has a mounting hole (423); in the direction away from the cylinder (20), the mounting hole (423) comprises a first mounting hole section (424) and a second mounting hole section (425) which are communicated, the diameter of the first mounting hole section (424) is D0, 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).

5. The pump body assembly according to claim 4, wherein the second mounting hole section (425) has a depth H3 and the seal groove (421) has a depth H2, wherein H3 ≧ H2.

6. The pump body assembly of claim 4, wherein the seal groove (421) is an annular groove disposed around an outer peripheral side of the second mounting bore section (425); the first elastic part (501) is a flat plate part, and the second elastic part (502) is an annular part.

7. The pump body assembly according to claim 6, wherein an axis of the seal groove (421), an axis of the second elastic portion (502), and an axis of the mounting hole (423) coincide.

8. The pump body assembly of claim 6,

the flange (40) comprises an end part (41) and a neck part (42) which are connected, the end part (41) is abutted against the cylinder (20), and the end face, far away from the cylinder (20), of the neck part (42) is provided with the sealing groove (421);

the blocking structure (50) comprises a silencer (51) and an elastic pad (52), the elastic pad (52) comprising the first elastic part (501) and the second elastic part (502);

the outer peripheral edge of the silencer (51) is connected with the end portion (41) through a fastening piece (60), the first elastic portion (501) is abutted to the end face, far away from the cylinder (20), of the neck portion (42), and the inner peripheral edge of the silencer (51) is pressed on the first elastic portion (501).

9. The pump body assembly according to claim 8, characterized in that the neck (42) has an outer diameter D2, the muffler (51) has an inner peripheral edge with a diameter D3, and the first resilient portion (501) has an outer diameter D4, wherein D2 < D3 < D4.

10. The pump body assembly of claim 6,

the flange (40) comprises an end part (41), a neck part (42) and a surrounding and blocking part (43) which are connected, the end part (41) is abutted against the cylinder (20), the end face, far away from the cylinder (20), of the neck part (42) is provided with the sealing groove (421), the surrounding and blocking part (43) is located on the outer peripheral side of the neck part (42), and the end face, far away from the cylinder (20), of the surrounding and blocking part (43) is flush with the end face, far away from the cylinder (20), of the neck part (42);

the blocking structure (50) comprises an end cap (53) and an elastic gasket (52), the elastic gasket (52) comprising the first elastic part (501) and the second elastic part (502);

the outer circumferential edge of the end cover (53) is connected with the surrounding blocking part (43) through a fastening piece (60), and the inner circumferential edge of the end cover (53) is pressed on the first elastic part (501).

11. The pump body assembly of claim 10,

the end cover (53) is provided with a mounting hole (531), and the mounting hole (531) comprises a first mounting hole section (532) and a second mounting hole section (533) which are communicated with each other along the direction away from the cylinder (20);

the first fitting hole section (532) has a diameter larger than that of the second fitting hole section (533), the first fitting hole section (532) being for accommodating the first resilient part (501);

the outer diameter of the neck portion (42) is D2, the outer diameter of the first elastic portion (501) is D4, and the diameter of the second assembling hole section (533) is D5, wherein D2 < D5 < D4.

12. The pump body assembly according to claim 11, wherein the first resilient portion (501) has a thickness H4 and the first mounting hole segment (532) has a depth H5, wherein H4 > H5.

13. The pump body assembly according to any one of claims 8 to 12, characterized in that the first elastic portion (501) and the second elastic portion (502) are of a unitary structure.

14. The pump body assembly according to any one of claims 8 to 12, wherein the resilient gasket (52) further comprises a third resilient portion (503), the third resilient portion (503) being convexly provided on the first resilient portion (501), the third resilient portion (503) and the second resilient portion (502) being located on both sides of the first resilient portion (501).

15. The pump body assembly according to claim 14, characterized in that the first elastic portion (501), the second elastic portion (502) and the third elastic portion (503) are of a unitary structure.

16. The pump body assembly of claim 6,

the flange (40) comprises an end part (41) and a neck part (42) which are connected, the end part (41) is abutted against the cylinder (20), and the end face, far away from the cylinder (20), of the neck part (42) is provided with the sealing groove (421);

the blocking structure (50) comprises a silencer (51), the silencer (51) comprises a connecting part (504), the first elastic part (501) and the second elastic part (502), the connecting part (504) is connected with the outer peripheral edge of the first elastic part (501), and the second elastic part (502) is connected with the inner peripheral edge of the first elastic part (501); the connecting portion (504) is connected to the end portion (41) by a fastener (60), and the first elastic portion (501) abuts against an end surface of the neck portion (42) away from the cylinder (20).

17. The pump body assembly according to claim 16, wherein the connecting portion (504), the first resilient portion (501) and the second resilient portion (502) are of unitary construction.

18. A compressor, characterized in that it comprises a pump body assembly according to any one of claims 1 to 17.

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