Compression assembly, compressor and air conditioner having the same

Abstract

The application provides a compression assembly, a compressor and an air conditioner with the same. The compression assembly comprises a first compression structure, the first compression structure comprises a first dynamic disc and a first static disc which are engaged with each other; the first dynamic disc is provided with a first dynamic scroll, and the first static disc is provided with a first static scroll; the first static scroll and the first dynamic scroll are engaged with each other to form a scroll structure, and a first compression cavity is formed in the scroll structure; the first dynamic disc has a crankshaft mounting position, and the axial position of the scroll structure and the crankshaft mounting position is staggered. According to the compression assembly, the compressor and the air conditioner with the same, the refrigerant can be compressed sufficiently in the compression structure.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioners, and in particular relates to a compression assembly, a compressor, and an air conditioner having the same. Background Art

[0002] Currently, in actual use, compressors sometimes need to operate at high compression ratios. Excessively high compression ratios can lead to excessively high exhaust temperatures, adversely affecting pump reliability and reducing compressor reliability. Therefore, it is necessary to reduce the compression ratio in these scenarios. A common approach is to adopt a two-stage compression design. For scroll compressors, existing technical approaches include the use of dual sets of orbiting and stationary scrolls, or a single orbiting scroll with dual scroll teeth mated to two stationary scrolls.

[0003] However, from the structural characteristics of the vortex pump body, it can be seen that the vortex plate adopting the above technical solution has an obvious defect. In order to avoid the crankshaft mounting hole, a considerable part of the center of the vortex teeth of the moving and static vortex plates serving as the first-stage compression needs to be removed. When this part is removed, the effective compression that the vortex plate can perform on the refrigerant is greatly reduced, and the intended purpose of the first-stage compression cannot be achieved.

[0004] Therefore, how to provide a compression assembly, a compressor and an air conditioner having the same that can sufficiently compress the refrigerant in the compression structure has become an urgent problem that technicians in this field need to solve. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present application is to provide a compression assembly, a compressor and an air conditioner having the same, which can enable the refrigerant to be sufficiently compressed in the compression structure.

[0006] In order to solve the above problems, the present application provides a compression assembly, including a first compression structure, the first compression structure including a first movable plate and a first stationary plate that are meshed with each other; a first movable scroll is provided on the first movable plate, and a first stationary scroll is provided on the first stationary plate; the first stationary scroll and the first movable scroll are meshed with each other to form a scroll structure, and a first compression chamber is formed in the scroll structure; a crankshaft mounting position is provided on the first movable plate, and the axial position of the scroll structure is staggered with the crankshaft mounting position.

[0007] Furthermore, an exhaust assembly is provided on the first stator disk, and the exhaust assembly can discharge the gas compressed by the first compression chamber in the scroll structure; the exhaust assembly and the scroll structure are provided in a one-to-one correspondence.

[0008] Furthermore, the compression assembly also includes a second compression structure, and the gas compressed in the first compression chamber in the scroll structure can enter the second compression structure for secondary compression.

[0009] Furthermore, a mounting hole is provided on the first movable plate, and the crankshaft can pass through the mounting hole so as to mount the first movable plate on the crankshaft; and the second compression structure is mounted on one end of the crankshaft.

[0010] Furthermore, the second compression structure includes a second stator plate, which is respectively arranged on both sides of the first movable plate with the first stator plate; and the second stator plate has a second stator scroll, and the first movable plate is provided with a second movable scroll, and the second stator scroll and the second movable scroll are meshed with each other to form a second compression chamber.

[0011] Furthermore, the first movable plate is provided with a circulation hole, and the position of the circulation hole is staggered with the position of the first movable scroll.

[0012] Furthermore, the outer periphery of the first stator plate has a connection structure, and the connection structure can be fixedly connected to the casing of the compressor.

[0013] Furthermore, the connection structure includes a plurality of connection parts, and the plurality of connection parts are sequentially arranged around the circumference of the first stator disk, and a distance exists between two adjacent connection parts.

[0014] Furthermore, the number of the scroll structure is set to at least one.

[0015] According to another aspect of the present application, a compressor is provided, comprising a compression assembly, which is the above-mentioned compression assembly.

[0016] According to another aspect of the present application, an air conditioner is provided, comprising a compressor, which is the above-mentioned compressor.

[0017] The compression assembly, compressor and air conditioner provided by the present application can prevent the situation where part of the scroll is cut off to avoid the crankshaft installation position by staggering the axial position of the scroll structure and the crankshaft installation position, thereby achieving effective and sufficient compression of the low-pressure refrigerant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic cross-sectional view of a first compression structure according to an embodiment of the present application;

[0019] Figure 2 This is a schematic structural diagram of the first static disk in an embodiment of the present application;

[0020] Figure 3 This is a structural schematic diagram of the back side of the first static disk according to an embodiment of the present application;

[0021] Figure 4 This is a schematic structural diagram of the first moving disk in an embodiment of the present application;

[0022] Figure 5 This is a schematic structural diagram of a compressor according to the first embodiment of the present application;

[0023] Figure 6 Fig. 1 is a structural schematic diagram of a compressor according to a second embodiment of the present application;

[0024] Figure 7 Fig. 2 is a structural schematic diagram of a static disk and a dynamic disk at 0° in the related art;

[0025] Figure 8 Fig. 3 is a structural schematic diagram of a static disk and a dynamic disk at 90° in the related art.

[0026] The reference signs are as follows:

[0027] 1, first compression structure; 11, first dynamic disk; 111, first dynamic scroll; 112, crankshaft mounting position; 113, through hole; 12, first static disk; 121, first static scroll; 122, connecting structure; 1221, opening; 2, second compression structure; 21, second dynamic disk; 22, second static disk; 3, exhaust assembly; 31, exhaust port; 32, exhaust valve plate; 33, baffle; 4, crankshaft; 51, shell; 52, front cover; 61, first support; 62, second support; 71, medium-pressure cavity; 72, low-pressure cavity. DETAILED DESCRIPTION

[0028] For reference Figures 1-8 As shown in the figure, a compression assembly comprises a first compression structure 1, the first compression structure 1 comprising a first dynamic disk 11 and a first static disk 12 that are engaged with each other; the first dynamic disk 11 is provided with a first dynamic scroll 111, and the first static disk 12 is provided with a first static scroll 121; the first static scroll 121 and the first dynamic scroll 111 are engaged with each other to form a scroll structure, and a first compression cavity is formed in the scroll structure; the first dynamic disk 11 has a crankshaft 4 mounting position 112, and the axial position of the scroll structure is staggered with the axial position of the crankshaft 4 mounting position 112.

[0029] According to the present application, the axial position of the scroll structure is staggered with the axial position of the crankshaft 4 mounting position 112, which can prevent the scroll from being cut to avoid the crankshaft 4 mounting position 112, thereby achieving effective and sufficient compression of low-pressure refrigerant and improving the compression efficiency of the compressor.

[0030] The scroll structure of the present application can be part of a conventional scroll, or can be the entire scroll (when the first moving plate 11 and the first stationary plate 12 are large enough); even if the scroll structure of the present application is part of a conventional scroll, the part is a segment of the central end of the conventional scroll, and the present application uses the segment of the central end of the conventional scroll to form a compression cavity to achieve effective and sufficient compression of low-pressure refrigerant, and when the compressor is a two-stage or multi-stage compression, the compression ratio of the two compression structures is reduced, the exhaust temperature is reduced, the compressor efficiency and reliability are improved.

[0031] The present application can avoid cutting off the central scroll tooth of the first stage rotating plate of a double-scroll or multi-scroll plate compressor, can improve the problem that the first stage scroll plate of a double-scroll moving and stationary plate cannot effectively and sufficiently compress, and when the compressor is a two-stage or multi-stage compression, can reduce the compression ratio of the two compression structures, reduce the exhaust temperature, and improve the compressor efficiency and reliability.

[0032] The present application also discloses some embodiments, the first stationary plate 12 is provided with an exhaust assembly 3, which can exhaust the gas compressed in the first compression cavity in the scroll structure; the exhaust assembly 3 is provided one-to-one with the scroll structure. The exhaust assembly 3 is composed of an exhaust port 31, an exhaust valve plate 32 and an exhaust baffle 33.

[0033] The present application also discloses some embodiments, the compression assembly further comprises a second compression structure 2, the gas compressed in the first compression cavity in the scroll structure can enter the second compression structure 2 for secondary compression. That is, the present application is a two-stage compression structure, the present application can include multiple compression structures to form a multi-stage compressor; the compression assembly of the present application can also include a third compression structure to form a three-stage compressor, and can also include a fourth compression structure to form a four-stage compression structure.

[0034] The present application also discloses some embodiments, the first moving plate 11 is provided with a mounting hole, the crankshaft 4 can penetrate the mounting hole to mount the first moving plate 11 on the crankshaft 4; and the second compression structure 2 is mounted on one end of the crankshaft 4.

[0035] As Figure 5The first embodiment is shown in a schematic diagram of a whole machine structure, the first compression structure 1 is installed near the motor side, and the first dynamic disk 11 and the second dynamic disk 21 are arranged relative to the mass center. The first dynamic disk 11 is provided with a first support 61 for support. The first static disk 12 and the shell 51 cooperate to divide the cavity of the shell 51 into two parts, a low-pressure cavity 72 and a medium-pressure cavity 71. The refrigerant enters the low-pressure cavity 72 of the shell 51 and is sucked by the first dynamic and static disk to perform primary compression to become a medium-pressure gas discharged to the medium-pressure cavity 71 of the shell 51. The second dynamic and static disk absorbs the gas from the medium-pressure cavity 71 to perform secondary compression and is discharged to the system through the exhaust pipe. The front cover 52 of the compressor is covered on the compressor shell 51.

[0036] For a double-scroll or multi-scroll compressor with a scroll plate penetrated by the crankshaft 4, the first dynamic and static scroll plate in the first embodiment fully utilizes a section of the center end of the scroll teeth to form a plurality of compression cavities to achieve effective and sufficient compression of low-pressure refrigerant, reduce the compression ratio of the second dynamic and static disk, reduce the exhaust temperature, improve the compressor efficiency and reliability.

[0037] The application also discloses some embodiments, the second compression structure 2 comprises a second static disk 22, and the second static disk 22 and the first static disk 12 are arranged on two sides of the first dynamic disk 11 respectively. The second static disk 22 has a second static scroll, and the first dynamic disk 11 is provided with a second dynamic scroll. The second static scroll and the second dynamic scroll are engaged with each other to form a second compression cavity. The compressor also has a second support 62, and the second support 62 can support the second compression structure 2.

[0038] That is, the first dynamic disk 11 belongs to not only the first compression structure 1 but also the second compression structure 2. The first dynamic disk 11 (base plate) is provided with the first dynamic scroll 111 on the first surface and the second dynamic scroll on the second surface.

[0039] The application also discloses some embodiments, the first dynamic disk 11 is provided with a flow-through hole 113, and the position of the flow-through hole 113 is staggered with the position of the first dynamic scroll 111. The first dynamic disk 11 is a base plate of a dynamic scroll plate. The first dynamic disk 11 is provided with the first dynamic scroll 111. A plurality of first dynamic scrolls 111 corresponding to the first static scroll 121 are arranged on the first dynamic disk 11, that is, the base plate. The tooth shape of the first dynamic scroll 111 is the same as that of the scroll tooth of the first static scroll 121. A plurality of flow-through holes 113 are formed on the first dynamic disk 11, that is, the base plate, to improve the flow-through property of the refrigerant and reduce the weight of the dynamic disk. The number of the flow-through holes 113 is at least one, preferably a plurality.

[0040] This application also discloses some embodiments in which the outer periphery of the first stator plate 12 includes a connection structure 122, which can be fixedly connected to the compressor housing 51. The connection structure 122 can be directly the outer peripheral wall of the first stator plate 12, and the outer peripheral wall of the first stator plate 12 can be directly connected to the compressor housing 51. For example, the outer peripheral wall of the first stator plate 12 and the compressor housing 51 can be connected by an interference fit or shrink fit, or by screws or other structures.

[0041] The present application also discloses some embodiments, in which the connection structure 122 includes a plurality of connection parts, and the plurality of connection parts are arranged in sequence around the circumference of the first stator 12, and there is a distance between two adjacent connection parts. The shell 51 and the first stator 12 can be connected by connecting the connection parts and the shell 51 of the compressor; this connection method is simpler. The plurality of connection parts can be formed by spaced openings 1221 on the connecting ring. That is, the first stator 12 of the present application, the first stator 12 is the substrate of the stator, and the substrate, that is, the stator, is provided with a vortex and an outer ring. A plurality of first stator scrolls 121 are provided at appropriate positions on the substrate of the first stator 12. The first stator scroll 121 can be taken from a section of the center end of a conventional vortex tooth, and each first stator scroll 121 is provided with an exhaust hole; the outer ring of the first stator 12 is spaced apart with openings 1221 to facilitate the circulation of the refrigerant and reduce the weight of the stator; such as Figure 6 As shown, on the end surface of the base plate away from the first static scroll 121 , after assembly, an exhaust valve plate 32 and an exhaust baffle 33 , namely, an exhaust assembly 3 , are provided at the exhaust hole of each first static disk 12 .

[0042] The present application also discloses some embodiments in which at least one scroll structure is provided. The number of scroll structures can also be set to two or more. That is, in the present application, a plurality of scroll structures are appropriately provided on the first rotating plate 11 and the first stationary plate 12 to form a plurality of compression chambers. The scroll structure can be a section of the center end of a conventional scroll tooth. The first rotating plate 11 and the first stationary plate 12 cooperate to form a plurality of compression chambers to achieve suction compression of the refrigerant.

[0043] Combined with attachment Figures 7-8 ,like Figure 7 The figure shows an example of the first stage of the dynamic and static disk in the twin scroll compressor in the related art. Since the crankshaft 4 needs to pass through the center area of ​​the dynamic disk, a part of the center end of the scroll teeth needs to be cut off. The figure shows the dynamic and static disk meshing state just after the suction is completed. At this time, the crankshaft 4 rotation angle is defined as 0°. Figure 8 As shown, Figure 7The meshing state of the example dynamic and static disk at the crankshaft 4 rotation angle of 90°, from the figure, the central cavity and the compression cavity have been communicated, so the compressor has started to discharge at this time, and the suction refrigerant has only been compressed for 90°, the pressure increase of the suction refrigerant is only several tens of KPa, for the refrigerant pressure of MPa level, the pressure increase of several tens of KPa is negligible, so the compression pressure increase by using this way is very small.

[0044] And the scroll structure avoiding the installation position 112 of the crankshaft 4 of the application can not cut off part of the scroll structure, and can greatly improve the effective compression ability of the refrigerant.

[0045] According to the embodiments of the application, a compressor is provided, which comprises the above-mentioned compression assembly.

[0046] According to the embodiments of the application, an air conditioner is provided, which comprises the above-mentioned compressor.

[0047] Those skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0048] The above is only the preferred embodiment of the application, and does not limit the application, any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application. The above is only the preferred embodiment of the application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the application, a number of improvements and modifications can be made, these improvements and modifications should be regarded as the protection scope of the application.

Claims

1. A compression assembly, characterized in that: The first compression structure (1) comprises a first driving disk (11) and a first static disk (12) which are engaged with each other; the first driving disk (11) is provided with a first driving scroll (111), and the first static disk (12) is provided with a first static scroll (121); the first static scroll (121) and the first driving scroll (111) are engaged with each other to form a scroll structure, and a first compression cavity is formed in the scroll structure; the first driving disk (11) has a crankshaft (4) mounting position (112), and the scroll structure is staggered with the axial position of the crankshaft (4) mounting position (112); The first static disk (12) is provided with an exhaust assembly (3) which can exhaust the gas compressed in the first compression cavity in the scroll structure; the exhaust assembly (3) is provided in one-to-one correspondence with the scroll structure; the compression assembly further comprises a second compression structure (2), and the gas compressed in the first compression cavity in the scroll structure can enter the second compression structure (2) for secondary compression; The first static disk (12) is arranged in a shell (51), and the first static disk (12) divides a cavity of the shell (51) into a low-pressure cavity (72) and a medium-pressure cavity (71); refrigerant enters the low-pressure cavity (72) and is sucked by the first compression structure (1), and the first compression structure (1) compresses the refrigerant to medium-pressure gas and discharges the medium-pressure gas into the medium-pressure cavity (71); The second compression structure (2) absorbs the medium-pressure gas in the medium-pressure cavity (71), and the second compression structure (2) discharges the medium-pressure gas after secondary compression through an exhaust pipe.

2. The compression assembly of claim 1, wherein, The first driving disk (11) is provided with a mounting hole, and the crankshaft (4) can penetrate through the mounting hole to mount the first driving disk (11) on the crankshaft (4); and the second compression structure (2) is mounted at one end of the crankshaft (4).

3. The compression assembly of claim 1, wherein, The second compression structure (2) comprises a second static disk (22), and the second static disk (22) and the first static disk (12) are arranged on two sides of the first driving disk (11) respectively; and the second static disk (22) has a second static scroll, and the first driving disk (11) is provided with a second driving scroll, and the second static scroll and the second driving scroll are engaged with each other to form a second compression cavity.

4. The compression assembly of claim 1, wherein, The first driving disk (11) is provided with a flow-through hole (113), and the position of the flow-through hole (113) is staggered with the position of the first driving scroll (111).

5. The compression assembly of claim 1, wherein, The first static disk (12) has a connecting structure (122) on the outer periphery, and the connecting structure (122) can be fixedly connected with a shell (51) of a compressor.

6. The compression assembly of claim 5, wherein, The connecting structure comprises a plurality of connecting portions, and the plurality of connecting portions are arranged in sequence around the circumference of the first static disk (12), and the distance between adjacent two connecting portions is provided.

7. The compression assembly of claim 1, wherein, The number of the scroll structures is at least one.

8. A compressor comprising a compression assembly, characterized by, The compression assembly is the compression assembly in any one of claims 1-7.

9. An air conditioner comprising a compressor, characterized by The compressor is the compressor in claim 8.

Images