WO2021004296A1

WO2021004296A1 - Compressor and heat exchange device

Info

Publication number: WO2021004296A1
Application number: PCT/CN2020/098258
Authority: WO
Inventors: 杨森; 胡余生; 徐嘉; 魏会军; 任丽萍; 杜忠诚; 李直; 张培林
Original assignee: 珠海格力节能环保制冷技术研究中心有限公司
Priority date: 2019-07-09
Filing date: 2020-06-24
Publication date: 2021-01-14
Also published as: CN110242535A

Abstract

A compressor and a heat exchange device. The compressor comprises: pump body structures (100), the number of the pump body structures (100) being two; a driving portion (30), the driving portion (30) comprising a stator assembly (31), a rotor assembly (32) matching the stator assembly (31), and a main shaft (40), the two ends of the main shaft (40) extending out from the two ends of the rotor assembly (32) and being respectively in driving connection with the two pump body structures (100), so as to simultaneously drive the two pump body structures (100) to operate. The structure can increase the exhaust amount of the compressor and achieves self-balance.

Description

Compressor and heat exchange equipment

Cross references to related applications

The present disclosure is based on the application with the CN application number 201910616084.4 and the filing date of July 09, 2019, and claims its priority. The disclosure of the CN application is hereby incorporated into the present disclosure as a whole.

Technical field

The present disclosure relates to the field of compressor equipment, in particular to a compressor and heat exchange equipment.

Background technique

In the piston compressor based on connecting rod transmission known to the inventor, the rotation direction of the main shaft and the reciprocating direction of the piston are perpendicular to each other, and the piston reciprocates relative to the cylinder.

Summary of the invention

According to one aspect of the present disclosure, there is provided a compressor, including: two pump body structures; and a driving part, including a stator assembly, a main shaft, and a rotor assembly cooperating with the stator assembly. Extend and respectively connect with two pump body structures to drive the two pump body structures to work at the same time.

In some embodiments, the two pump body structures are symmetrically arranged at both ends of the driving part.

In some embodiments, the compressor further includes: a dispenser body; and two suction pipes, respectively connected to two ends of the dispenser body, and the two suction pipes respectively communicate with two pump body structures.

In some embodiments, the compressor further includes a casing, the pump body structure and the driving part are located in the casing, the dispenser body is located outside the casing, and the middle of the casing has a compression exhaust port.

In some embodiments, the middle part of the liquid separator body is also provided with a liquid separation air inlet.

In some embodiments, the compressor further includes a plurality of bracket structures corresponding to the pump body structure and the driving part respectively, so that adjacent pump body structures and the driving part are connected by the plurality of bracket structures.

In some embodiments, the support structure includes a cylindrical structure, and both ends of the cylindrical structure have openings. The side wall of the cylindrical structure has at least one heat dissipation hole. When the side wall of the cylindrical structure has a plurality of heat dissipation holes, more The heat dissipation holes are arranged at intervals along the circumference of the cylindrical structure.

In some embodiments, the support structure further includes at least one sealed bearing, and the sealed bearing is arranged at the opening of the cylindrical structure.

In some embodiments, the sealed bearing includes a disc body and a protrusion protruding from the disc body. The disc body is connected to the cylindrical structure, and the protrusion extends toward the cylindrical structure. When the support structure is used to install the driving part, The rotor assembly has an escape sink for accommodating the protrusion.

In some embodiments, the main shaft includes two sub-shafts, the axes of the two sub-shafts are on the same straight line, and there is an installation gap between the two sub-shafts, and the two pump body structures are respectively arranged at the ends of the two sub-shafts far away from each other; Shared rotor assembly and stator assembly; or the driving part includes two rotor assemblies, the two sub-shafts respectively correspond to two rotor assemblies, and the two sub-shafts share the stator assembly; or the driving part includes two stator assemblies, and the two sub-shafts correspond to two respectively The stator assembly, and the two sub-shafts share the rotor assembly.

In some embodiments, the main shaft includes two sub-shafts, the driving part includes a stator assembly and two rotor assemblies, the two sub-shafts correspond to different stator assemblies and rotor assemblies, and the two sub-shafts are coaxially arranged at both ends of the compressor. , The two pump body structures are respectively arranged at one end of the two sub-shafts close to each other.

In some embodiments, the compressor is a horizontal compressor.

According to another aspect of the present disclosure, there is provided a heat exchange device including the above-mentioned compressor.

In some embodiments, the heat exchange device is an air conditioner.

Description of the drawings

The accompanying drawings of the specification constituting a part of the present disclosure are used to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are used to explain the present disclosure, and do not constitute an improper limitation of the present disclosure. In the attached picture:

Fig. 1 shows a schematic structural diagram of a compressor according to some specific embodiments of the present disclosure;

Figure 2 shows a cross-sectional view of the compressor in Figure 1;

Fig. 3 shows a schematic diagram of the connection relationship between the pump body assembly and the driving part of the compressor in Fig. 1;

Figure 4 shows a cross-sectional view of the pump body structure and the driving part in Figure 3;

FIG. 5 shows a schematic structural diagram of the driving part of the compressor in FIG. 1;

Figure 6 shows a front view of the driving part in Figure 5;

Figure 7 shows a side view of the driving part in Figure 5;

FIG. 8 shows a cross-sectional view of the driving part in FIG. 5;

FIG. 9 shows a schematic structural view of the rotor assembly of the driving part in FIG. 5;

Fig. 10 shows a schematic structural view of the pump body structure of the compressor in Fig. 1;

FIG. 11 shows a schematic structural diagram of the cylindrical structure of the support structure in FIG. 5;

Figure 12 shows a schematic structural view of the sealed bearing of the bracket structure in Figure 5;

FIG. 13 shows a schematic structural diagram of the main shaft in FIG. 5;

FIG. 14 shows a schematic structural diagram of the compressor when the main shaft of the compressor is composed of two sub-shafts in some embodiments of the present disclosure;

FIG. 15 shows a schematic structural diagram of the driving part of the compressor in FIG. 14;

FIG. 16 shows a schematic structural diagram of the compressor in some embodiments of the present disclosure when there are two rotor assemblies and two sub-shafts;

FIG. 17 shows a schematic structural diagram when there are two stator components, rotor components and sub-shafts of the compressor in some embodiments of the present disclosure;

Figure 18 shows an exploded view of the connection between the pump body structure and the main shaft in some embodiments of the present disclosure;

Figure 19 shows a cross-sectional view of the connection between the pump body structure and the main shaft in Figure 18;

FIG. 20 shows a schematic structural diagram of the main shaft in FIG. 19;

Figure 21 shows a top view of Figure 20;

Figure 22 shows a schematic view of the structure of the piston in Figure 18;

Figure 23 shows a front view of the piston in Figure 22;

Figure 24 shows a cross-sectional view of the piston in Figure 22;

FIG. 25 shows a schematic structural diagram of the cylinder in FIG. 18;

Figure 26 shows a cross-sectional view of the cylinder in Figure 25;

Figure 27 shows a schematic structural view of the cylinder head in Figure 18;

Figure 28 shows a cross-sectional view of the cylinder head in Figure 27;

FIG. 29 shows a schematic diagram of the structure of the suction valve plate in FIG. 18;

FIG. 30 shows a schematic diagram of the structure of the suction valve plate baffle in FIG. 18;

Fig. 31 shows a schematic diagram of the connection between the guide structure and the rolling bearing in Fig. 18.

Among them, the above drawings include the following reference signs:

10. Cylinder assembly; 11. Cylinder; 111. Guide structure; 112. Cylinder body; 113. Support lug; 12. Rolling bearing; 13. Cylinder head; 131. Cylinder head exhaust port; 14. Exhaust valve plate assembly; 15. Suction valve plate assembly; 151, suction valve plate baffle; 152, suction valve plate; 1521, suction port; 1522, spring plate; 1523, valve plate exhaust port; 20, piston; 21, guide rail Slot; 211, piston radial oil port; 22, oil guide groove; 23, piston center oil hole; 24, avoidance groove; 30, drive part; 31, stator assembly; 32, rotor assembly; 40, main shaft; 41, section A radial support arc surface; 42, the first circumferential support plane; 43, the second circumferential support plane; 44, the third circumferential support plane; 45, the second radial support arc surface; 46, the fourth Circumferential support plane; 47. Fifth circumferential support plane; 48. Sixth circumferential support plane; 49. Shaft center oil port; 491. Shaft radial oil port; 50. Guide groove; 60. Guide protrusion 80. Dispenser body; 81. Dispensing air inlet; 90. Suction pipe; 100. Pump body structure; 200. Shell; 210. Compression exhaust port; 300. Support structure; 310. Cylindrical structure ; 320, sealed bearings.

Detailed ways

In the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. Hereinafter, the present disclosure will be described in detail with reference to the drawings and in conjunction with embodiments.

Unless otherwise specified, all technical and scientific terms used in the present disclosure have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs.

In the present disclosure, if there is no explanation to the contrary, the orientation words used such as "up, down, top, bottom" are usually directed to the direction shown in the drawings, or refer to the vertical, In terms of vertical or gravitational direction; similarly, for ease of understanding and description, "inner and outer" refers to the inner and outer relative to the contour of each component itself, but the above-mentioned orientation words are not used to limit the present disclosure.

It is found through research that in the piston compressor based on connecting rod transmission known to the inventor, the connecting rod transmission has a large efficiency loss, and the main shaft has an eccentric structure, which requires a balanced structure, while the structure of a multi-stage piston compressor is compared complex.

In view of this, the embodiments of the present disclosure provide a compressor and a heat exchange device, which can improve the performance of the compressor.

In some embodiments, the heat exchange equipment includes the compressor described below. In some embodiments of the present disclosure, the heat exchange device is an air conditioner.

As shown in FIGS. 1 to 17, in some embodiments of the present disclosure, the compressor includes: a pump body structure 100 and a driving part 30. There are two pump body structures 100; the driving part 30 includes a stator assembly 31, a rotor assembly 32 matched with the stator assembly 31, and a main shaft 40. The two ends of the main shaft 40 extend from the two ends of the rotor assembly 32 and respectively connect with the two pump bodies. The structure 100 is drivingly connected to simultaneously drive two pump body structures 100 to work.

When the compressor with the above structure is used, since the two pump body structures 100 are respectively arranged at both ends of the main shaft 40 and are driven by the main shaft 40 at the same time, the compressor can achieve the self-balancing effect without the need for a balancing structure, thereby not only achieving The purpose of simplifying the structure of the compressor is achieved, and the multi-tank compression of the compressor is also realized, thereby improving the performance of the compressor.

A key groove and a circumferential key corresponding to the key groove are provided at a position where the main shaft 40 is connected to the pump body structure 100, and the main structure of the circumferential key is a cuboid. In the present disclosure, there are two key grooves at each end of the main shaft 40, and the two key grooves are arranged symmetrically with respect to the main shaft 40. A part of the circumferential key is located inside the key groove, and the other part supports the piston 20.

In some embodiments, two pump body structures 100 are symmetrically arranged at both ends of the driving part 30. Through this arrangement, when the main shaft 40 drives the two pump body structures 100 to work, the two pump body structures 100 can respectively compensate the compressor's own balance and reach a state of mutual balance. That is, the unbalance generated by one pump body structure 100 can compensate the unbalance generated by the other body, so that the compressor as a whole can achieve its own balance.

In some embodiments, the two pump body structures 100 are arranged symmetrically, that is, the pistons 20 of the two pump body structures 100 reciprocate coaxially at all times, but in opposite directions, and the entire compressor is completely self-balanced.

In some embodiments, the compressor further includes a separator body 80 and a suction pipe 90. There are two suction pipes 90, the two suction pipes 90 are respectively connected to the two ends of the dispenser body 80, and the two suction pipes 90 respectively communicate with the two pump body structures 100. With this arrangement, gas can be supplied to the two pump body structures 100 through the suction pipe 90 respectively during the operation of the compressor.

In some embodiments, the compressor further includes a housing 200, the pump body structure 100 and the driving part 30 are located in the housing 200, the dispenser body 80 is located outside the housing 200, and the middle of the housing 200 is provided with a compression row.气口210。 Air port 210. Since the pump body structure 100 discharges the gas into the housing 200 after exhausting, only one compressor discharge port can discharge the gas discharged from the two pump body structures 100 at the same time. The compression exhaust port 210 is arranged in the middle of the casing 200 so that the compressor can discharge the gas inside the casing 200 more easily.

In some embodiments, the middle part of the liquid separator body 80 is also provided with a liquid gas inlet 81. This arrangement is for the dispenser to discharge the gas to the two suction pipes 90 more evenly. Therefore, the suction volume of the two pump body structures 100 is the same.

In some embodiments, the compressor further includes a plurality of support structures 300, and the pump body structure 100 and the driving part 30 are correspondingly provided with a support structure 300, so that the adjacent pump body structure 100 and the driving part 30 are connected by the support structure 300 . Moreover, this arrangement can also support the cylinder 11 of the pump structure 100, thereby ensuring the stability of the pump structure 100.

The end surface of the cylinder 11 of the two pump body structures 100 away from the main shaft 40 also has a flange that is interference fit with the cylinder 11, and the flange can be connected to the bracket structure 300 corresponding to the pump body structure 100.

In some embodiments, the support structure 300 includes a cylindrical structure 310, and both ends of the cylindrical structure 310 have openings. The sidewall of the cylindrical structure 310 is provided with at least one heat dissipation hole. When there are multiple heat dissipation holes, more The heat dissipation holes are arranged at intervals along the circumference of the cylindrical structure 310. The radiating holes can not only radiate heat to the driving part 30, but also can reduce the weight of the entire compressor and save the manufacturing cost of the compressor.

In some embodiments, the support structure 300 further includes at least one sealed bearing 320 which is disposed at the opening of the cylindrical structure 310. Through this arrangement, the wear on the main shaft 40 can be reduced during the working process.

In some embodiments, the main structure of the sealed bearing 320 is a hollow cylinder with a variable outer diameter. The hollow cylinder has a certain roughness requirement. It is coaxially fitted with the main shaft 40 and fixed to the support structure 300 corresponding to the driving part 30. To provide radial support to the main shaft 40.

Moreover, in the present disclosure, in each support structure 300, a certain degree of parallelism is required for the end faces of the support structure 300, so as to ensure that the end faces of the two sealed bearings 320 are fixed when the sealed bearing 320 and the pump body structure 100 are fixed. The parallelism and the coaxiality of the inner hole can also ensure the coaxiality of the two pistons 20 in the two pump body structures 100.

In other embodiments, the stator assembly 31 in the driving part 30 and the support structure 300 are welded or connected by interference.

In some embodiments, the sealed bearing 320 includes a disc body and a protrusion protruding from the disc body. The disc body is connected to the cylindrical structure 310, and the protrusion extends toward the cylindrical structure 310. When the support structure 300 is used for mounting When driving the part 30, the rotor assembly 32 is provided with an escape sink for accommodating the protrusion. This can effectively increase the bearing height of the sealed bearing 320, reduce the support span on both sides of the main shaft 40, and reduce deformation.

In the present disclosure, the main shaft 40, the rotor assembly 32, and the stator assembly 31 mainly have the following cooperation modes:

In the embodiment shown in Figures 14 and 15, the main shaft 40 is composed of two sub-shafts, the axes of the two sub-shafts are located on the same straight line, and there is an installation gap between the two sub-shafts, and the two pump body structures 100 are respectively arranged on two The two sub-shafts are separated from each other at one end, and the two sub-shafts share a stator assembly 31 and a rotor assembly 32.

In the embodiment shown in FIG. 16, the main shaft 40 is composed of two sub-shafts, the axes of the two sub-shafts are on the same straight line, and there is an installation gap between the two sub-shafts, the rotor assembly 32 is two, and the two sub-shafts correspond to one The rotor assembly 32 shares a stator assembly 31.

In some embodiments of the present disclosure, the main shaft 40 is composed of two sub-shafts, the axes of the two sub-shafts are located on the same straight line, and there is an installation gap between the two sub-shafts. There are two stator assemblies 31, and the two sub-shafts correspond to one stator respectively. The assembly 31 shares a rotor assembly 32.

In the embodiment shown in FIG. 17, the main shaft 40 is composed of two sub-shafts, the axes of the two sub-shafts are located on the same straight line, and there is an installation gap between the two sub-shafts, the rotor assembly 32 and the stator assembly 31 are respectively two, two The two sub-shafts respectively correspond to different rotor assemblies 32 and stator assemblies 31, and the two sub-shafts are respectively arranged coaxially at both ends of the compressor, and the two pump body structures 100 are respectively arranged at one end of the two sub-shafts away from each other.

In some embodiments, the main shaft 40 is composed of two sub-shafts, the axes of the two sub-shafts are on the same straight line, and there is a mounting gap between the two sub-shafts, eliminating the need for the support structure 300 corresponding to the driving part 30, the rotor assembly 32 and the stator assembly There are two respectively 31, and the two sub-shafts respectively correspond to different rotor assemblies 32 and stator assemblies 31, and the stator assembly 31 and the rotor assembly 32 are directly arranged on the inner wall of the compressor housing 200.

In other embodiments, the main shaft 40 is composed of two sub-shafts, two stator assemblies 31 and two rotor assemblies 32. The two sub-shafts correspond to different stator assemblies 31 and rotor assemblies 32, and the two sub-shafts are the same. The shafts are arranged at both ends of the compressor, and the two pump body structures 100 are respectively arranged at one end of the two sub-shafts close to each other.

In some embodiments, the compressor is a horizontal compressor. When the compressor in the present disclosure is a horizontal compressor, the above-mentioned compressor structure can make the compressor body have a self-balancing effect.

As shown in FIGS. 18 to 31, the pump body structure 100 includes a cylinder assembly 10 and a piston 20 in the present disclosure.

In addition, in the following description, the main shaft 40 of the driving part 30 can be directly connected to the piston 20 instead of the transmission structure. The purpose of the transmission structure is to extend the connection between the driving part 30 and the pump body structure 100. In other words, the main shaft 40 is equivalent to a transmission structure.

The cylinder assembly 10 includes a cylinder 11, and a piston 20 is movably arranged in the cylinder 11. The driving part 30 is drivingly connected to the piston 20 through a transmission structure, so that the piston 20 rotates relative to the cylinder 11 while moving back and forth in the cylinder 11 along the pivot axis of the piston 20.

When the transmission structure rotates relative to the cylinder 11, because the piston 20 can not only move back and forth relative to the cylinder 11 but also rotate relative to the cylinder 11, and the piston 20 is always coaxial with the transmission structure during the movement, the pump body is effectively lifted The efficiency of the structure 100 also solves the problem of eccentric rotation of the structure.

In addition, since the piston 20 has a rotational movement relative to the cylinder 11, the leakage of gas in the cylinder 11 can also be effectively reduced.

In some embodiments, the outer peripheral wall of the piston 20 is provided with guide grooves 21 that are connected end to end along the circumference thereof, and the cylinder 11 is provided with a guide structure 111 extending into the guide groove 21. With this arrangement, when the piston 20 moves relative to the cylinder 11, the piston 20 and the cylinder 11 can be kept connected by the guide structure 111 and the guide groove 21, and when the piston 20 moves relative to the cylinder 11, the guide structure 111 is always kept inside the guide groove 21 Therefore, the movement direction of the piston 20 can be restricted.

In some embodiments, the inner surface of the cylinder 11 is provided with a guide groove 21 connected end to end along its circumference, and the piston 20 is provided with a guide structure 111 extending into the guide groove 21. When such arrangement is made, the cylinder 11 is arranged in a separate structure to facilitate the installation of the cylinder 11 and the piston 20.

In some embodiments, the guide groove 21 is a continuous wave-curved guide groove 21. When the piston 20 moves relative to the cylinder 11, it will not only move back and forth relative to the cylinder 11, but also rotate relative to the cylinder 11, so the guide groove 21 is set as a continuous wave-curved guide. The guide groove 21 is set to be continuous to ensure that the piston 20 can rotate relative to the cylinder 11, and to be set in the shape of a wave curve is to ensure that the piston 20 can move up and down relative to the cylinder 11.

In some embodiments of the present disclosure, the wave curve guide groove 21 is a sine or cosine wave curve guide groove 21. Through this arrangement, it can be ensured that the movement trajectory of the piston 20 is more regular, so that it can ensure that the piston 20 and the cylinder 11 can be sucked in, compressed and discharged regularly.

In some embodiments, the number of wave crests and wave troughs of the sine or cosine wave guide groove 21 in the circumferential direction of the cylinder 11 or the piston 20 is the same and both are greater than or equal to 2. During the movement of the piston 20, each time the rotation of the piston 20 passes through a continuous wave crest and trough, a process of suction, compression and exhaust is completed. Therefore, when the numbers of wave crests and wave troughs are the same and both are greater than or equal to 2, the piston 20 can complete the process of inhalation, compression and exhaust more than twice after one revolution. The working efficiency of the pump body structure 100 is effectively improved. Moreover, this arrangement also realizes the multi-stage compression of the single cylinder 11, and has a simple structure compared with the multi-cylinder piston 20 compressor.

In some embodiments, when there are one or more guiding structures 111 and there are multiple guiding structures 111, the number of guiding structures 111 is not more than the number of wave crests, and the multiple guiding structures 111 are located in the piston 20. The same radial plane. Since the piston 20 not only rotates relative to the cylinder 11, but also moves back and forth relative to the cylinder 11, and the guide structure 111 is always located inside the guide groove 21 during the movement of the piston 20. Therefore, in order to ensure the normal movement of the piston 20, there can only be one guiding structure 111 between adjacent wave crests and wave troughs, and all the guiding structures 111 are on the same plane.

In some embodiments, there are one or more guide structures 111, and the displacement Vone of the pump body structure 100 satisfies the following relationship:

Vone=K1*K2*A*S (Formula 1)

Among them, K1 is a coefficient, and K1 is an integer greater than zero; K2 is the number of guide structures 111; A is the amplitude of the sine or cosine wave curve guide groove 21; S is the area of the end surface of the piston 20 facing the compression chamber of the cylinder 11 .

Therefore, when the compressor has two symmetrically arranged pump body structures 100, the compressor displacement V satisfies the following relationship:

V=2 Vone (Formula 2)

In the above description, K1*K2 can also be regarded as the number of sine or cosine periods or the number of crests or troughs on the guide groove 21. In addition, the above-mentioned exhaust gas volume refers to the exhaust gas volume when the main shaft 40 makes one revolution.

In some embodiments, the guiding structure 111 is a pin extending into the guide groove 21. Of course, when ensuring that the guiding structure 111 has a certain strength, in some embodiments, other parts are selected as the guiding structure 111.

In some embodiments, a rolling bearing 12 is provided at one end of the guide structure 111 extending into the guide rail groove 21. Since there is relative movement between the guide structure 111 and the guide groove 21 during the movement of the piston 20, in order to reduce the influence of the resistance generated by the guide structure 111 and the guide groove 21 on the movement of the piston 20, the guide structure 111 extends A rolling bearing 12 is provided at one end of the guide groove 21 to reduce resistance.

In some embodiments, the transmission structure is a shaft. The shaft is coaxially arranged with the pivot axis of the piston 20. The piston 20 is sleeved on the shaft. When the shaft rotates, the piston 20 rotates synchronously with the shaft and moves along the shaft. The body slides back and forth.

In some embodiments, the first end of the shaft is inserted into the piston 20, the driving portion 30 is located at the second end of the shaft, and the end of the shaft extending into the piston 20 is provided with a first circumferential rotation stop structure, and the piston 20 A second circumferential rotation prevention structure that cooperates with the first circumferential rotation prevention structure is provided. Through this arrangement, it is possible to prevent relative rotation between the piston 20 and the shaft body, thereby ensuring the synchronous rotation of the piston 20 and the shaft body.

Although there is no relative rotation between the piston 20 and the shaft. However, in order to ensure that the piston 20 can move back and forth relative to the cylinder 11, the piston 20 can have a back and forth movement on the shaft body relative to the cylinder 11 along the axis of the shaft body to ensure that the pump body structure 100 can normally perform suction, compression and exhaust. process.

In some embodiments of the present disclosure, the second circumferential rotation stop structure is a guide groove 50 extending along the pivot axis of the piston 20, and the first circumferential rotation stop structure is a guide protrusion 60 extending into the guide groove 50 , And with the movement of the piston 20, the guide protrusion 60 moves back and forth in the guide groove 50.

In some embodiments, the first circumferential anti-rotation structure is a guide groove 50 extending along the axial direction of the outer peripheral surface of the shaft body, and the second circumferential anti-rotation structure is a guide protrusion 60 extending into the guide groove 50, And with the movement of the piston 20, the guide protrusion 60 moves back and forth in the guide groove 50.

In order to ensure that there is no relative rotation between the piston 20 and the shaft body, in some embodiments, the cross section of the end of the shaft body extending into the piston 20 is a non-circular cross section.

As shown in Figures 20 and 21, in some embodiments of the present disclosure, the outer peripheral surface of the end of the shaft extending into the piston 20 includes a first radial support arc surface 41 and a first peripheral surface that are connected end to end in sequence. Support plane 42, second circumferential support plane 43, third circumferential support plane 44, second radial support arc surface 45, fourth circumferential support plane 46, fifth circumferential support plane 47, sixth circumference To support plane 48, the first radial support arc surface 41 and the second radial support arc surface 45 are symmetrically arranged, the second circumferential support plane 43 and the fifth circumferential support plane 47 are symmetrically arranged, and the first circumference The supporting plane 42 and the third circumferential supporting plane 44 are arranged symmetrically, and the fourth circumferential supporting plane 46 and the sixth circumferential supporting plane 48 are arranged symmetrically. Through this arrangement, while ensuring the synchronous rotation of the piston 20 and the shaft body, the frictional force between the piston 20 and the shaft body can also be reduced when the piston 20 moves back and forth relative to the cylinder 11. In addition, this arrangement can also enable the shaft to provide axial and circumferential supporting forces for the piston 20 to realize load transmission. When the shaft body is arranged in this way, the main shaft 40 does not need to be provided with key grooves and corresponding circumferential keys.

In some embodiments, the cross-sectional area of the first end of the shaft is larger than the cross-sectional area of the second end of the shaft. Through this arrangement, the connection strength between the shaft and the piston 20 can be effectively ensured, so as to prevent the shaft from being broken at the connection with the piston 20.

In some embodiments, the guide groove 21 is located on the outer circumferential wall of the piston 20, the transmission structure is a shaft body, the first end of the shaft body is inserted into the piston 20, and the outer circumferential wall of the piston 20 is also provided with an oil guide groove 22, the piston 20 includes at least One piston radial oil port 211 and at least one piston central oil hole 23. The piston radial oil port 211 communicates with the shaft inside the piston 20 through the piston center oil hole 23. In some embodiments, the piston radial oil port 211 is provided on the bottom wall of the oil guide groove 22 and the bottom wall of the guide groove 21. In other embodiments, the piston radial oil port 211 is provided on the bottom wall of the oil guide groove 22 or the bottom wall of the guide groove 21.

In some embodiments, the shaft body has a shaft central oil port 49 and a shaft radial oil port 491 and they are communicated, and the shaft central oil port 49 penetrates the axial end surface of the shaft.

By arranging the piston radial oil port 211, the piston center oil hole 23, the shaft radial oil port 491, and the shaft center oil port 49, it is possible to effectively perform the operation between the guide structure 111 and the guide groove 21, and between the piston 20 and the shaft. lubricating. Therefore, the friction between the guide structure 111 and the guide groove 21 and the friction between the piston 20 and the shaft can be further reduced.

In some embodiments, the outer peripheral wall of the piston 20 is further provided with an escape groove 24, and the escape groove 24 is located between the guide groove 21 and the oil guide groove 22. With this arrangement, it is possible to effectively avoid unnecessary wear between the piston 20 and the cylinder 11 when the piston 20 moves relative to the cylinder 11. The main body of the piston 20 is a cylinder with a certain roughness.

In some embodiments, the cylinder 11 includes a cylinder body 112 and a supporting lug 113. The supporting lug 113 is arranged on the end surface of the cylinder body 112 facing the transmission structure, and the guiding structure 111 is arranged on the supporting lug 113. With this arrangement, the contact area between the piston 20 and the cylinder 11 can be further reduced, thereby effectively reducing the wear between the cylinder 11 and the piston 20.

In the embodiment of the present disclosure, the cylinder assembly 10 further includes a flange, and the flange and the side of the cylinder body 112 away from the supporting lug 113 are interference fit.

In some embodiments, the cylinder assembly 10 further includes a cylinder head 13, an exhaust valve plate assembly 14, and a suction valve plate assembly 15. The suction valve plate assembly 15 is arranged between the cylinder 11 and the cylinder head 13, and the exhaust valve plate The assembly 14 is arranged at the cylinder head exhaust port 131 of the cylinder head 13. This arrangement can effectively ensure that the pump body structure 100 performs normal suction, compression and exhaust operations.

In some embodiments, the suction valve plate assembly 15 includes a suction valve plate baffle 151 and a suction valve plate 152. The suction valve plate baffle 151 is annular; the suction valve plate 152 is arranged between the cylinder head 13 and the suction valve plate baffle 151. The suction valve plate 152 has a suction port 1521 and is movably arranged at the suction port 1521 When the pump body structure 100 sucks in air, the spring piece 1522 opens, and the suction valve piece 152 also has a valve piece exhaust port 1523 corresponding to the cylinder head exhaust port 131.

In some embodiments, the valve plate exhaust port 1523 is located on the spring plate 1522. Through this arrangement, the spring sheet 1522 of the pump body structure 100 can be effectively prevented from opening during the exhaust process, and the gas can be prevented from being discharged from the suction port 1521.

The specific intake and exhaust process is that when the pressure inside the cylinder 11 is lower than the pressure outside the cylinder 11, the spring plate 1522 opens and the gas enters the inside of the cylinder 11; when the pressure inside the cylinder 11 is higher than the pressure outside the cylinder 11, The exhaust valve plate is opened, and the gas is discharged from the cylinder 11 through the valve plate exhaust port 1523.

In some embodiments, the spring sheet 1522 is formed by cutting a part of the suction valve sheet 152 and forms an integral structure with the suction valve sheet 152, and the cut formed after cutting serves as the suction port 1521. Through this arrangement, the sealing performance between the spring plate 1522 and the suction valve plate 152 can be effectively ensured, thereby ensuring the working efficiency of the pump body structure 100.

In some embodiments, the movement of the piston 20 relative to the cylinder 11 satisfies a trigonometric function relationship, and the center of mass of the cylinder 11 corresponds to a balance surface where the amplitude of the trigonometric function is zero. The center of mass of the piston 20 is relative to the balance during the movement of the piston 20. The surface moves continuously to form a trigonometric function curve. In the present disclosure, when the piston 20 is in the initial position, the line connecting the center of mass of the piston 20 and the center of mass of the cylinder 11 is perpendicular to the axial direction of the piston 20 or the cylinder 11. When the piston 20 moves relative to the cylinder 11, the center of mass of the piston 20 moves up and down relative to the center of mass of the cylinder 11, and the position of the center of mass of the piston 20 relative to the center of mass of the cylinder 11 has a functional relationship with the movement time of the piston 20, and the function relationship diagram It is a sine function curve or a cosine function curve.

It can be seen from the above description that the above-mentioned embodiments of the present disclosure achieve at least one of the following technical effects:

1. Improve the transmission efficiency of the pump body structure 100 and increase the displacement of the pump body structure 100;

2. The two pump bodies are arranged symmetrically, and the compressor realizes self-balance;

3. Each pump body structure 100 can realize single-cylinder multi-compression, increased displacement and simple structure.

Obviously, the above-described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of the present disclosure.

It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "including" are used in this specification, they indicate There are features, steps, works, devices, components, and/or combinations thereof.

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

The foregoing descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

A compressor, including:

Two pump body structures (100); and

The driving part (30) includes a stator assembly (31), a main shaft (40) and a rotor assembly (32) matched with the stator assembly (31),

Wherein, the two ends of the main shaft (40) protrude from the two ends of the rotor assembly (32) and are respectively drivingly connected with the two pump body structures (100) to simultaneously drive the two pump body structures (100) Work.
The compressor according to claim 1, wherein the two pump body structures (100) are symmetrically arranged at both ends of the driving part (30).
The compressor according to claim 1, further comprising:

The dispenser body (80); and

Two suction pipes (90) are respectively connected to the two ends of the dispenser body (80), and the two suction pipes (90) respectively communicate with the two pump body structures (100).
The compressor according to claim 3, further comprising a housing (200), the pump body structure (100) and the driving part (30) are located in the housing (200), and the dispenser body (80) is located outside the casing (200), and the middle of the casing (200) has a compression exhaust port (210).
The compressor according to claim 3, wherein the middle part of the liquid separator body (80) further has a liquid gas inlet (81).
The compressor according to claim 1, further comprising:

A plurality of support structures (300) respectively correspond to the pump body structure (100) and the driving part (30), so that the adjacent pump body structure (100) and the driving part (30) pass through The multiple support structures (300) are connected.
The compressor according to claim 6, wherein the support structure (300) comprises a cylindrical structure (310), and both ends of the cylindrical structure (310) have openings, the cylindrical structure (310) The side wall has at least one heat dissipation hole, and when the side wall of the cylindrical structure (310) has a plurality of heat dissipation holes, the plurality of heat dissipation holes are arranged at intervals along the circumference of the cylindrical structure (310).
The compressor according to claim 7, wherein the support structure (300) further comprises at least one sealed bearing (320), and the sealed bearing (320) is arranged at the opening of the cylindrical structure (310) Place.
The compressor according to claim 8, wherein the sealed bearing (320) comprises a disc body and a protrusion protruding from the disc body, and the disc body is connected with the cylindrical structure (310), so The protruding portion extends toward the cylindrical structure (310). When the support structure (300) is used to install the driving portion (30), the rotor assembly (32) has a recessed recess for use To accommodate the raised portion.
The compressor according to claim 8, wherein the main shaft (40) includes two sub-shafts, the axes of the two sub-shafts are located on the same straight line, and there is an installation gap between the two sub-shafts, and the two The pump body structure (100) is respectively arranged at one end of the two sub-shafts away from each other,

The two sub-shafts share the rotor assembly (32) and the stator assembly (31); or

The driving part (30) includes two rotor assemblies (32), the two sub-shafts respectively correspond to the two rotor assemblies (32), and the two sub-shafts share the stator assembly (31); or

The driving part (30) includes two stator assemblies (31), the two sub-shafts respectively correspond to the two stator assemblies (31), and the two sub-shafts share the rotor assembly (32).
The compressor according to claim 1, wherein the main shaft (40) includes two sub-shafts, and the driving part (30) includes two stator assemblies (31) and two rotor assemblies (32), the The two sub-shafts respectively correspond to different stator assemblies (31) and rotor assemblies (32); among them,

The two sub-shafts are respectively arranged coaxially at two ends of the compressor, and the two pump body structures (100) are respectively arranged at one end of the two sub-shafts away from each other; or

The two sub-shafts are coaxially arranged at both ends of the compressor, and the two pump body structures (100) are respectively arranged at one end of the two sub-shafts close to each other.
The compressor according to any one of claims 1 to 11, wherein the compressor is a horizontal compressor.
A heat exchange device, comprising the compressor according to any one of claims 1 to 12.
The heat exchange device according to claim 13, wherein the heat exchange device is an air conditioner.