CN210135083U - Pump body subassembly and compressor - Google Patents

Abstract

The utility model provides a pump body subassembly and compressor, pump body subassembly includes: the first flange and the second flange are oppositely arranged; the at least one cylinder is clamped between the first flange and the second flange; wherein, first flange is spacing through first spacing portion with its adjacent cylinder to the radial clearance between first flange of restriction and its adjacent cylinder, first flange, second flange and at least one cylinder fixed connection, with locking pump body subassembly. The technical scheme of the utility model the first spacing portion can control the radial clearance between first flange and its adjacent cylinder, when the compressor received the strong impact load of its axis of perpendicular to, the relative position control of cylinder and flange is in the within range that allows the change, and then the clearance between the roller in control cylinder and the cylinder is in the scope that allows the change, has improved performance, reliability, the shock resistance of compressor.

Description

Pump body subassembly and compressor

Technical Field

The utility model relates to a compressor technical field, concretely relates to pump body subassembly and compressor.

Background

At present, the horizontal rolling rotor type compressor is simple in structure, low in cost, small in occupied space in the height direction of the compressor, capable of greatly reducing the overall height of a unit and more advantageous in application space. Meanwhile, the compressor is horizontally installed, the center of gravity is low, the vibration amplitude is small, the risk of vibration cracking of the unit piping is reduced, the noise of the whole machine is small, the reliability is high, and the experience effect is good. Particularly, with the high-speed development of new energy vehicles, vehicle-mounted horizontal rotary compressors are gradually adopted.

Horizontal installation of on-vehicle horizontal compressor, at the in-process that the car went at a high speed, the compressor received strong longitudinal impact force easily and the cylinder because of receiving impact load and overcome the frictional force that the screw compressed tightly produced, lead to the cylinder and the original relative position of upper and lower bearing can change, because the external diameter of roller and the internal diameter of cylinder are high accuracy clearance assembly, and then lead to the clearance of roller and cylinder to take place great change, the bent axle rotational speed slows down, thereby can lead to the performance variation of compressor, the bent axle even changes motionlessly, lead to the pump body card to die. Therefore, how to ensure that the flange and the cylinder do not generate relative displacement under strong longitudinal impact load is one of the problems to be solved urgently in the stable operation process of the horizontal rolling rotor compressor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a pump body subassembly and compressor to the flange produces relative displacement with the cylinder and leads to the performance variation or the dead problem of pump body card of compressor when solving among the prior art compressor and receiving the strong impact load of its axis of perpendicular to.

In order to achieve the above object, the utility model provides a pump body subassembly, include: the first flange and the second flange are oppositely arranged; the at least one cylinder is clamped between the first flange and the second flange; wherein, first flange is spacing through first spacing portion with its adjacent cylinder to the radial clearance between first flange of restriction and its adjacent cylinder, first flange, second flange and at least one cylinder fixed connection, with locking pump body subassembly.

Further, the second flange and the adjacent cylinder are limited by the second limiting part so as to limit the radial gap between the second flange and the adjacent cylinder.

Further, the cylinder is equipped with two, and two cylinders and first flange and two cylinders and second flange all are connected through long connecting portion.

Further, the number of the cylinders is two, the first flange is connected with the adjacent cylinder through the short connecting portion, and the two cylinders are connected with the second flange through the long connecting portion.

Further, the first limiting portion comprises at least two first limiting pins, and the first flange and the adjacent cylinder are provided with at least two first limiting holes which are matched with the at least two first limiting pins in a one-to-one correspondence manner.

Furthermore, the first limiting hole is a through hole or a blind hole.

Furthermore, a partition plate is arranged between the two cylinders, and the two cylinders are respectively limited with the partition plate through a third limiting part so as to limit the radial gap between the partition plate and the cylinders.

Furthermore, a partition plate is arranged between the two cylinders, and at least three of the first flange, one cylinder, the partition plate, the other cylinder and the second flange which are adjacent in sequence are limited through a fourth limiting part.

Further, the first flange and the adjacent cylinder thereof, and the second flange and the adjacent cylinder thereof are connected through short connecting portions, and the two long connecting portions and the two short connecting portions are arranged in a one-to-one correspondence manner.

Furthermore, the second limiting part comprises at least two second limiting pins, and the second flange and the adjacent cylinder are provided with at least two second limiting holes which are matched with the at least two second limiting pins in a one-to-one correspondence manner.

Further, the cylinder is provided with one, the first flange is connected with the cylinder through the short connecting portion, the first flange, the cylinder and the second flange are connected through the long connecting portion, or the first flange is connected with the cylinder and the second flange is connected with the cylinder through the short connecting portion, or the first flange is connected with the cylinder and the second flange is connected through the long connecting portion.

Further, the first flange is an upper flange, and the second flange is a lower flange, or the first flange is a lower flange, and the second flange is an upper flange.

The utility model also provides a compressor, include: the pump body assembly is described above.

The utility model discloses technical scheme has following advantage: under the limit of the first limit part, the radial gap between the first flange and the adjacent cylinder can be controlled, when the compressor is subjected to strong impact load vertical to the axis of the compressor, the relative position of the cylinder and the flange is controlled within the allowable change range, the gap between the cylinder and the roller in the cylinder is further controlled within the allowable change range, and the performance, the reliability and the shock resistance of the compressor are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic cross-sectional view of a pump body assembly provided in a first embodiment of the present invention;

FIG. 2 shows a schematic view of a first stop pin assembly of the pump body assembly of FIG. 1;

FIG. 3 shows a schematic view of a first short screw assembly of the pump body assembly of FIG. 1;

FIG. 4 shows a schematic view of a second stop pin assembly of the pump body assembly of FIG. 1;

FIG. 5 shows a schematic view of a second short screw assembly of the pump body assembly of FIG. 1;

FIG. 6 shows a schematic view of the assembly of the first and second long screws of the pump body assembly of FIG. 1;

FIG. 7 shows a schematic view of an upper flange of the pump body assembly of FIG. 1;

FIG. 8 shows a schematic view of the upper cylinder of the pump block assembly of FIG. 1;

FIG. 9 shows a schematic view of the lower flange of the pump body assembly of FIG. 1;

FIG. 10 shows a schematic view of the lower cylinder of the pump body assembly of FIG. 1;

fig. 11 shows a schematic cross-sectional view of a compressor provided by the present invention;

FIG. 12 shows a schematic view of a pump body assembly of the compressor of FIG. 11;

figure 13 shows a schematic cross-sectional view of a pump body assembly provided in a second embodiment of the present invention;

figure 14 shows a schematic cross-sectional view of a pump body assembly provided in a third embodiment of the present invention;

figure 15 shows a schematic cross-sectional view of a pump body assembly provided in a fourth embodiment of the invention;

fig. 16 shows a schematic cross-sectional view of a pump body assembly provided in a fifth embodiment of the present invention;

figure 17 shows a schematic view, partly in section, of a pump body assembly provided in a sixth embodiment of the invention;

fig. 18 shows a schematic partial cross-sectional view of a pump body assembly provided in a seventh embodiment of the present invention;

fig. 19 shows a schematic partial cross-sectional view of a pump body assembly provided in an eighth embodiment of the present invention;

fig. 20 shows a schematic partial cross-sectional view of a pump body assembly provided in a ninth embodiment of the present invention.

Description of reference numerals:

11. a pump body assembly; 12. a motor assembly; 13. a housing assembly; 14. a lower flange; 15. a lower cylinder; 16. A partition plate; 17. an upper cylinder; 18. an upper flange; 19. a crankshaft; 20. sliding blades; 21. a roller; 31. a first limit pin; 32. a second limit pin; 33. a third limit pin; 34. a fourth limit pin; 41. a first limit hole; 42. a second limiting hole; 51. a first long screw; 52. a second long screw; 53. a first short screw; 54. a second short screw; 61. a first long screw hole; 62. a second long screw hole; 63. a first short screw hole; 64. a second short screw hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example one

As shown in fig. 1, the pump body assembly of the present embodiment includes: first flange, second flange and two cylinders, first flange and second flange set up relatively, two cylinders press from both sides and establish between first flange and second flange, wherein, first flange is spacing through first spacing portion with its adjacent cylinder, in order to restrict the radial clearance between first flange and its adjacent cylinder, second flange is spacing through the spacing portion of second with its adjacent cylinder, in order to restrict the radial clearance between second flange and its adjacent cylinder, first flange, second flange and two cylinder fixed connection, in order to lock pump body subassembly.

By applying the pump body assembly of the embodiment, under the limit of the first limit part and the second limit part, the radial gap between each cylinder and the adjacent flange can be controlled, when the compressor is subjected to strong impact load perpendicular to the axis of the compressor, the relative positions of the cylinders and the flanges are controlled within the allowable change range, and then the gap between the cylinders and the rollers in the cylinders is controlled within the allowable change range, so that the performance, reliability and shock resistance of the compressor are improved.

In the present embodiment, as shown in fig. 6, the two cylinders and the first flange and the two cylinders and the second flange are connected by long connecting portions. Two long connecting portions are locked on the two cylinders simultaneously, so that the pump body is effectively prevented from deforming, the locking is firmer, and the vibration resistance of the pump body can be improved. The two long connecting parts are respectively a first long connecting part and a second long connecting part, the first long connecting part sequentially penetrates through the first flange and the adjacent cylinder to be fixed on the cylinder adjacent to the second flange, and the second long connecting part sequentially penetrates through the second flange and the adjacent cylinder to be fixed on the cylinder adjacent to the first flange. Because the polished rod portion and a cylinder of connecting portion are clearance fit, lock respectively on the cylinder of difference through two long connecting portions, guarantee that every cylinder can not take place to remove long connecting portion relatively.

In this embodiment, as shown in fig. 2, 7 and 8, the first limiting portion includes two first limiting pins 31, and the first flange and the adjacent cylinder thereof are respectively provided with two first limiting holes 41 which are in one-to-one corresponding fit with the two first limiting pins 31. The limiting pin has the advantages of simple structure, convenience in use and low cost. The first stopper hole 41 is in transition fit with the first stopper pin 31. Specifically, a line connecting the axis of one first limit pin and the axis of the first flange and a line connecting the axis of the other first limit pin and the axis of the first flange form a first included angle. Preferably, the first included angle is an obtuse angle. Of course, the number of the first stopper pins 31 may be three or more, and the first stopper pins may be provided according to specific situations.

In this embodiment, the first flange and the first limiting hole 41 on the cylinder adjacent to the first flange are all through holes. The length of the spacing pin in the first spacing hole can be changed.

In this embodiment, first flange and its adjacent cylinder and second flange and its adjacent cylinder all connect through short connecting portion, and two long connecting portions and two short connecting portion one-to-ones setting this moment for pump body subassembly is more firm reliable. Specifically, the two short connecting portions are respectively a first short connecting portion and a second short connecting portion, the first flange and the adjacent cylinder are connected through the first short connecting portion, and the second flange and the adjacent cylinder are connected through the second short connecting portion.

In this embodiment, as shown in fig. 4, 9 and 10, the second limiting portion includes two second limiting pins 32, and two second limiting holes 42 corresponding to the two second limiting pins 32 are respectively disposed on the second flange and the adjacent cylinder. The limiting pin has the advantages of simple structure, convenience in connection and cost reduction. The second limit hole 42 is in transition fit with the second limit pin 32. Specifically, a line connecting the axis of one second stopper pin and the axis of the second flange forms a second included angle with a line connecting the axis of the other second stopper pin and the axis of the second flange. Preferably, the second included angle is an obtuse angle. Of course, the number of the second limit pins can be more than three, and the second limit pins need to be arranged according to specific situations.

As shown in fig. 2 to 6, the pump body assembly assembling method of the present embodiment includes the steps of:

step S10: the first flange and the adjacent cylinder are limited by the first limiting part to limit the radial gap between the first flange and the adjacent cylinder,

step S20: and fixedly connecting the first flange, the second flange and the two cylinders to lock the pump body assembly.

In the present embodiment, in step S20, the first flange and its adjacent cylinder are connected by a short connection; limiting the second flange and the adjacent cylinder by a second limiting part to limit the radial gap between the second flange and the adjacent cylinder; connecting the second flange with the adjacent cylinder through a short connecting part; the two cylinders and the first flange and the two cylinders and the second flange are connected through long connecting parts.

Specifically, as shown in fig. 6, the first long connecting portion includes Y first long screws 51, the first short connecting portion includes X first short screws 53, and Y first long screw holes 61 and X first short screw holes 63 are provided on the first flange and the cylinder adjacent thereto; the second long connecting portion comprises X second long screws 52, the second short connecting portion comprises Y second short screws 54, X second long screw holes 62 and Y second short screw holes 64 are formed in the second flange and the adjacent cylinder, and X, Y is equal to or larger than 1.

In the present embodiment, as shown in fig. 6 to 10, the first flange is the upper flange 18, the second flange is the lower flange 14, the two cylinders are respectively the upper cylinder 17 and the lower cylinder 15, 3 first long screws 51 are provided, 2 second long screws 52 are provided, 2 first short screws 53 are provided, and 3 second short screws 54 are provided. The pump body assembly comprises a crankshaft 19, a roller 21, a sliding vane 20, an upper flange 18, an upper cylinder 17, a partition plate 16, a lower cylinder 15 and a lower flange 14, wherein the upper flange 18, the upper cylinder 17, the partition plate 16, the lower cylinder 15 and the lower flange 14 are sequentially arranged on the crankshaft 19 in a penetrating mode, and the roller 21 and the sliding vane 20 are arranged on the upper cylinder 17 and the lower cylinder 15. The upper flange 18 and the upper cylinder 17 are connected through a first limiting pin 31 and connected through a first short screw 53, the lower cylinder 15 and the lower flange 14 are connected through a second limiting pin 32 and connected through a second short screw 54, a first long screw 51 penetrates through the upper flange 18, the upper cylinder 17 and the partition plate 16 and is fixed on the lower cylinder 15, and a second long screw 52 penetrates through the lower flange 14, the lower cylinder 15 and the partition plate 16 in sequence and is fixed on the upper cylinder 17. The assembly process of the pump body assembly is as follows:

the method comprises the following steps: as shown in fig. 2, firstly, 2 first limit pins 31 are driven into the upper cylinder 17 and the upper flange 18 to limit the upper cylinder 17 and the upper flange 18, and the radial gap between the upper cylinder 17 and the upper flange 18 is controlled; as shown in fig. 3, the upper cylinder 17 and the upper flange 18 are locked by 2 first short screws 53 to form an upper cylinder assembly; a roller, a slide and a crankshaft are placed in the upper cylinder assembly.

Step two: as shown in fig. 4, firstly, 2 second limit pins 32 are driven into the lower cylinder 15 and the lower flange 14 by transition fit, so as to limit the second limit pins and control the radial gap between the lower cylinder 15 and the lower flange 14; as shown in fig. 5, the lower cylinder 15 and the lower flange 14 are locked by 3 second short screws 54 to form a lower cylinder assembly; then putting a roller and a slide sheet into the lower cylinder assembly; and finally, assembling the partition plate and the lower air cylinder assembly on the crankshaft.

Step three: 3 first long screws 51 in the upper cylinder assembly correspond to 3 second short screws 54 in the lower cylinder assembly and are locked to the lower cylinder 15; the 2 second long screws 52 in the lower cylinder assembly correspond to the 2 first short screws 53 in the upper cylinder assembly, and are locked to the upper cylinder 17, so that the upper cylinder assembly, the partition plate 16 and the lower cylinder assembly are locked together to form a pump body assembly (as shown in fig. 6).

The upper cylinder 17 and the upper flange 18, and the lower cylinder 15 and the lower flange 14 in the pump body assembly are limited by the limit pins, so that the relative position between the flanges and the cylinder is not changed when the horizontal compressor resists strong impact load, the radial gap between the cylinder and the roller can be controlled, and the vibration resistance and the reliability of the vehicle-mounted horizontal compressor are improved.

As an alternative embodiment, the first flange is a lower flange and the second flange is an upper flange.

As an alternative embodiment, the pump body assembly does not include the second limiting portion, and the assembly method of the pump body assembly does not include the step of limiting by the second limiting portion.

As an alternative embodiment, the pump body assembly does not comprise two short connecting portions, and the method of assembling the pump body assembly does not comprise the step of connecting the short connecting portions.

As an alternative embodiment, the partition plate in step two is assembled on the crankshaft in step one, specifically, after the rollers, the vanes, and the crankshaft are placed in the upper cylinder assembly.

Example two

Fig. 13 shows the structure of the second embodiment of the pump body assembly of the present invention, and the pump body assembly of the second embodiment is different from the first embodiment in that whether two long connecting portions and two short connecting portions are on the same side. In the second embodiment, the first flange and its adjacent cylinder are connected by two short connecting portions, and the two cylinders and the second flange are connected by two long connecting portions.

Specifically, the first short screw and the second short screw are all on the same side, such as the upper flange side, and the first long screw and the second long screw are all on the opposite side (the lower flange side), so that the components such as the upper cylinder assembly, the partition plate 16 and the lower cylinder assembly are all locked on the same component to form the pump body assembly. Of course, the first short screws and the second short screws may be all on the lower flange side, in which case the first long screws and the second long screws are all on the upper flange side.

The assembly method of the pump body assembly of the second embodiment is as follows:

the method comprises the following steps: firstly, 2 first limit pins 31 are driven into the upper cylinder 17 and the upper flange 18 to limit the upper cylinder 17 and the upper flange 18 and control the radial gap between the upper cylinder 17 and the upper flange 18; the upper cylinder 17 and the upper flange 18 are locked by 2 first short screws 53 and 3 second short screws 54 to form an upper cylinder assembly; a roller, a slide and a crankshaft are placed in the upper cylinder assembly.

Step two: firstly, 2 second limit pins 32 are driven into the lower cylinder 15 and the lower flange 14 by transition fit to limit the lower cylinder 15 and the lower flange 14, and a radial gap between the lower cylinder 15 and the lower flange 14 is controlled to form a lower cylinder assembly; then putting a roller and a slide sheet into the lower cylinder assembly; and finally, assembling the partition plate and the lower air cylinder assembly on the crankshaft.

Step three: the 3 first long screws 51 and the 2 second long screws 52 in the lower cylinder assembly correspond to the 3 second short screws 54 and the 2 first short screws 53 in the upper cylinder assembly, are locked on the upper cylinder 17, and the upper cylinder assembly, the partition plate 16 and the lower cylinder assembly are locked together to form the pump body assembly.

EXAMPLE III

Fig. 14 shows a third embodiment of the pump body assembly according to the present invention, and the pump body assembly according to the third embodiment is different from the first or second embodiment in whether or not there is a third stopper. In the third embodiment, the two cylinders are respectively limited by the third limiting parts with the partition plate 16, so as to limit the radial gap between the partition plate 16 and the cylinders.

Specifically, the upper cylinder 17, the lower cylinder 15, and the partition plate 16 are respectively limited by a third limiting portion to limit a radial gap between the partition plate 16 and the cylinders. The number of the limiting parts in the pump body assembly is increased, the limiting parts between every two adjacent parts in the pump body assembly are limited, and the radial gaps between the parts in the pump body assembly are effectively controlled.

In this embodiment, each third limiting portion includes at least two third limiting pins 33, a third limiting hole matched with the third limiting pins 33 is provided on the partition plate 16, two ends of one third limiting pin 33 are respectively matched with a part of the third limiting hole and a part of the first limiting hole, and two ends of the other third limiting pin 33 are respectively matched with the other part of the third limiting hole and a part of the second limiting hole.

The pump body assembly assembling method of the third embodiment needs to add the following steps between the second step and the third step of the first embodiment or the second embodiment: the upper air cylinder assembly and the partition plate 16 as well as the partition plate 16 and the lower air cylinder assembly are limited through the third limiting pin 33, the number of pins in the pump body assembly is increased, the pins are arranged between every two adjacent parts in the pump body assembly for limiting, and the radial clearance between the parts in the pump body assembly is effectively controlled.

Example four

Fig. 15 shows a structure of a fourth embodiment of the pump body assembly according to the present invention, and the pump body assembly according to the fourth embodiment is different from the pump body assembly according to the first embodiment or the second embodiment in whether or not there is a fourth limit portion. In the fourth embodiment, three of the first flange, the one cylinder, the partition 16, the other cylinder, and the second flange which are adjacent in sequence are limited by the fourth limiting portion.

Specifically, the upper flange 18, the upper cylinder 17 and the partition plate 16 are limited by a fourth limiting part, the partition plate 16, the lower cylinder 15 and the lower flange 14 are limited by the fourth limiting part, and the fourth limiting part in the pump body assembly is connected with a plurality of parts at a time, so that the relative radial clearance between the parts in the whole pump body is controlled within a certain range.

In this embodiment, each fourth limiting portion includes at least two fourth limiting pins 34, and fourth limiting holes matched with the fourth limiting pins 34 are disposed on the upper flange 18, the upper cylinder 17, the lower cylinder 15, the lower flange 14 and the partition 16.

The pump body assembly assembling method of the fourth embodiment needs to add the following steps between the second step and the third step of the first embodiment or the second embodiment: the upper air cylinder assembly is connected with the partition plate 16 through a fourth limit pin 34; the lower cylinder assembly is connected to the bulkhead 16 by a fourth limit pin 34.

As an alternative implementation manner, the first limiting part and the third limiting part and the other third limiting part and the second limiting part in the third embodiment form two fourth limiting parts, and the limiting parts in the pump body assembly are connected with a plurality of parts at a time, so that the relative radial clearance between the parts in the whole pump body is controlled within a certain range.

EXAMPLE five

Fig. 16 shows a fifth embodiment of the pump body assembly according to the present invention, which is different from the first embodiment in the number of cylinders. In the fifth embodiment, there is one cylinder, the first flange and the cylinder are connected by a short connecting portion, and the first flange, the cylinder and the second flange are connected by a long connecting portion.

Specifically, the upper flange 18 and the cylinder are centered by a short screw connection, and the upper flange 18, the cylinder and the lower flange 14 are centered by a long screw connection.

The pump body assembly assembling method of the fifth embodiment needs to remove the second step of the first embodiment and replace the third step with the following step: 3 long screws in the upper cylinder assembly are locked on the lower flange 14, and the upper cylinder assembly and the lower flange are locked into a whole to form the pump body assembly.

As an alternative embodiment, step two of example one is eliminated and step three is replaced with the following step: 3 long screws in the lower flange are locked on the upper flange 18, and the upper cylinder assembly and the lower flange are locked into a whole to form the pump body assembly.

As an alternative embodiment, step three of example one is eliminated and step two is replaced with the following step: the short screw in the lower flange is locked on the air cylinder, and the upper air cylinder assembly and the lower flange are locked into a whole to form the pump body assembly.

As an alternative embodiment, step two of example one is eliminated and step three is replaced with the following step: the upper flange, the cylinder and the lower flange are connected through long screws.

As an alternative embodiment, the lower flange is connected to the cylinder by means of a dowel pin.

EXAMPLE six

Fig. 17 shows a structure of a sixth embodiment of the pump body assembly of the present invention, and the pump body assembly of the sixth embodiment is different from the first embodiment in that whether the first limiting hole is a through hole or not. In the sixth embodiment, the first limiting holes on the upper flange 18 are all through holes, and the first limiting holes on the upper cylinder 17 are all blind holes.

EXAMPLE seven

Fig. 18 shows a structure of a seventh embodiment of the pump body assembly of the present invention, which is different from the first embodiment in that whether the first stopper hole is a through hole or not. In the seventh embodiment, the first limiting holes on the upper flange 18 are all blind holes, and the first limiting holes on the upper cylinder 17 are all through holes.

Example eight

Fig. 19 shows the structure of the eighth embodiment of the pump body assembly of the present invention, and the pump body assembly of the eighth embodiment is different from the first embodiment in that whether the first limiting hole is a through hole or not. In the eighth embodiment, the first limiting holes on the upper flange 18 are all blind holes, and the first limiting holes on the upper cylinder 17 are all blind holes.

Example nine

Fig. 20 shows a structure of a ninth embodiment of the pump body assembly of the present invention, which is different from the first embodiment in that whether the first limiting hole is a through hole or not. In the ninth embodiment, one first limiting hole on the upper flange 18 is a blind hole, the other first limiting hole on the upper flange 18 is a through hole, one first limiting hole on the upper cylinder 17 is a blind hole, and the other first limiting hole on the upper cylinder 17 is a through hole.

The utility model also provides a compressor, as shown in fig. 11 and 12, the compressor includes: the pump block assembly 11 described above. The compressor also comprises a motor assembly 12 and a shell assembly 13, the pump body assembly 11 and the motor assembly 12 are both arranged in the shell assembly 13, and a rotor of the motor assembly 12 is sleeved on a crankshaft of the pump body assembly 11. The working principle of the compressor is as follows: the excircle of roller 21 and the inner wall of cylinder form the compression cavity, and gleitbretter 20 hugs closely the outer wall of roller 21 and divides the compression cavity into suction chamber and compression chamber two parts, and under the condition that motor element 12 drives bent axle 19 and rotates, roller 21 on the bent axle 19 eccentric part also rotates thereupon and can make the suction chamber inhale low temperature low pressure gas, and the compression chamber compresses and discharges high temperature high pressure gas, realizes the whole compression process of refrigerant.

In this embodiment, the compressor is a horizontal compressor. Of course, the compressor may be a vertical compressor.

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

the pump body assembly is simultaneously locked by the pin and the screw, so that when the horizontal compressor is subjected to strong longitudinal impact, the relative position of the air cylinder and the upper and lower bearings is controlled within an allowable variation range, the risk of the horizontal compressor being stuck by the strong longitudinal impact load is avoided, and the vibration resistance and the reliability of the horizontal compressor are improved; the automatic centering of the flange in the pump body assembling process is realized, and the problems that the centering of the flange is poor due to the dislocation of the centering screw, the gap between the roller and the cylinder is too large, the compressor fails due to the leakage of refrigerant and the like are solved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (13)

1. A pump body assembly, comprising:

the first flange and the second flange are oppositely arranged;

the at least one air cylinder is clamped between the first flange and the second flange;

wherein the first flange and the adjacent cylinder are limited by a first limiting part so as to limit the radial gap between the first flange and the adjacent cylinder,

the first flange, the second flange and at least one cylinder are fixedly connected to lock the pump body assembly.

2. The pump body assembly of claim 1, wherein the second flange and the cylinder adjacent thereto are retained by a second retaining portion to limit a radial clearance between the second flange and the cylinder adjacent thereto.

3. The pump body assembly according to claim 2, characterized in that there are two cylinders, two cylinders and the first flange and two cylinders and the second flange being connected by long connecting portions.

4. The pump body assembly according to claim 2, wherein there are two cylinders, the first flange and its adjacent cylinder being connected by a short connecting portion, and the two cylinders and the second flange being connected by a long connecting portion.

5. The pump body assembly according to any one of claims 1 to 4, wherein the first limiting portion comprises at least two first limiting pins (31), and the first flange and the cylinder adjacent to the first flange are respectively provided with at least two first limiting holes (41) which are matched with the at least two first limiting pins (31) in a one-to-one correspondence manner.

6. The pump body assembly according to claim 5, characterized in that the first limit hole (41) is a through hole or a blind hole.

7. The pump body assembly according to claim 3 or 4, characterized in that a partition plate (16) is arranged between the two cylinders, and the two cylinders are respectively limited with the partition plate (16) through a third limiting part so as to limit the radial clearance between the partition plate (16) and the cylinders.

8. The pump body assembly according to claim 3 or 4, wherein a partition plate (16) is arranged between the two cylinders, and at least three of the first flange, one of the cylinders, the partition plate (16), the other cylinder and the second flange which are adjacent in sequence are limited by a fourth limiting portion.

9. The pump body assembly according to claim 3, wherein the first flange and the cylinder adjacent thereto and the second flange and the cylinder adjacent thereto are connected by a short connecting portion, and two of the long connecting portions and two of the short connecting portions are provided in one-to-one correspondence.

10. The pump body assembly according to claim 2, wherein the second limiting portion comprises at least two second limiting pins (32), and the second flange and the cylinder adjacent to the second flange are respectively provided with at least two second limiting holes (42) which are correspondingly matched with the at least two second limiting pins (32) one by one.

11. The pump body assembly according to claim 1, wherein the cylinder is provided with one, the first flange and the cylinder are connected by a short connecting portion, and the first flange, the cylinder and the second flange are connected by a long connecting portion, or the first flange and the cylinder and the second flange and the cylinder are connected by a short connecting portion, or the first flange, the cylinder and the second flange are connected by a long connecting portion.

12. The pump body assembly according to claim 1, characterized in that the first flange is an upper flange (18) and the second flange is a lower flange (14), or in that the first flange is a lower flange (14) and the second flange is an upper flange (18).

13. A compressor, comprising: the pump body assembly of any one of claims 1 to 12.

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