Compression structure, compressor, and air conditioner

Abstract

The present application provides a compression structure, a compressor, and an air conditioner, comprising a first scroll and a second scroll. The first scroll comprises a first baseplate; at least two scrolls are provided on the first baseplate; the at least two scrolls are arranged sequentially in the direction of the central axis of the first scroll; the second scroll comprises a second baseplate; at least two grooves are provided on the first baseplate; the at least two grooves are arranged sequentially in the direction of the central axis of the first scroll, and the grooves are sequentially connected; the grooves are arranged in a one-to-one correspondence with the scrolls; each scroll can enter a corresponding groove, and each scroll can move relative to the corresponding groove to form a corresponding compression chamber; gas can sequentially enter each compression chamber for compression. The compression structure, compressor, and air conditioner according to the present application have a simple structure and reliable assembly.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and specifically to a compression structure, a compressor, and an air conditioner. Background Art

[0002] At present, the scroll compressor is mainly composed of six parts: the static scroll, the orbiting scroll, the upper bracket, the lower bracket, the cross ring and the crankshaft.

[0003] However, existing two-stage scroll compressors often utilize two or more pump bodies for two-stage compression, or employ upper and lower profile scrolls. These compressors either require numerous parts and complex assembly, or require high-precision components and complex manufacturing processes. Furthermore, the cantilever beam structure of the scroll profile can easily cause tooth breakage at high pressure ratios, impacting compressor reliability.

[0004] Therefore, how to provide a compression structure, a compressor and an air conditioner with a simple structure and reliable assembly has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present application is to provide a compression structure, a compressor and an air conditioner with simple structure and reliable assembly.

[0006] In order to solve the above problems, the present application provides a compression structure, including:

[0007] A first scroll, the first scroll comprising a first base plate; at least two scrolls are provided on the first base plate; the at least two scrolls are arranged in sequence in the direction of the central axis of the first scroll;

[0008] and a second scroll, the second scroll including a second substrate; at least two grooves are provided on the first substrate, and at least two grooves are arranged in sequence in the direction of the central axis of the first scroll, and the grooves are connected in sequence; the grooves are arranged in a one-to-one correspondence with the scrolls; each scroll can enter the corresponding groove, and each scroll can move relative to the corresponding groove to form a corresponding compression chamber; the gas can enter each compression chamber in sequence for compression.

[0009] Furthermore, the groove widths of two adjacent grooves are different, and a step surface is formed between the two adjacent grooves; the scroll corresponds to the size and position of the corresponding groove; the scroll is arranged in the corresponding groove, and the scroll cooperates with the corresponding step surface to form each compression chamber sealed in the axial direction.

[0010] Furthermore, the width of the scroll decreases successively in the direction away from the first substrate; the width of the groove increases successively in the direction away from the second substrate; the size and position of each groove correspond to the size and position of the corresponding scroll; the scroll can extend into the groove so that each scroll cooperates with the corresponding groove to form a corresponding compression chamber.

[0011] Furthermore, at least two air inlets are provided on the second substrate, and the air inlets are provided in one-to-one correspondence with the compression chambers, and the air inlets are used to guide gas into the corresponding compression chambers.

[0012] Furthermore, an exhaust port is provided on the second substrate, and the exhaust port is provided in one-to-one correspondence with the compression chamber. The exhaust port is used to guide the compressed gas to discharge from the corresponding compression chamber.

[0013] Furthermore, the exhaust port includes a main exhaust port and an intermediate exhaust port; the intake port includes an initial intake port and an intermediate intake port; in each groove, the groove closest to the second substrate forms a final compression chamber with the corresponding scroll; the main exhaust port is connected to the final compression chamber, and the main exhaust port can guide the gas compressed by the final compression chamber to be discharged; in each groove, the groove farthest from the second substrate forms a primary compression chamber with the corresponding scroll, and the primary compression chamber is connected to the initial intake port, and the gas can enter the primary compression chamber through the initial intake port for compression; in the direction of the central axis of the first scroll, between the final compression chamber and the primary compression chamber The compression chamber is an intermediate compression chamber; the intermediate exhaust port is arranged in a one-to-one correspondence with the first-stage compression chamber and the intermediate compression chamber, and the intermediate exhaust port can guide the compressed gas in the corresponding first-stage compression chamber or the corresponding intermediate compression chamber to be discharged; the intermediate air intake port is arranged in a one-to-one correspondence with the final-stage compression chamber and the intermediate compression chamber, and the intermediate air intake port can guide the gas to enter the intermediate compression chamber or the corresponding final-stage compression chamber; a connecting channel is also provided on the second substrate, and the connecting channel connects the intermediate exhaust port and the corresponding intermediate air intake port; to guide the gas discharged from the intermediate exhaust port to enter the intermediate air intake port, and then the gas can enter each compression chamber in turn for compression.

[0014] Furthermore, the scroll includes a first scroll and a second scroll; the first scroll is arranged on the first substrate, and the second scroll is arranged on the first scroll; the groove includes a first groove and a second groove; in the direction away from the second substrate, the first groove and the second groove are arranged in sequence, and the first groove is connected to the second groove; the second scroll can enter the first groove, and the second scroll and the first groove can move relative to each other to form a first compression chamber; the first scroll can enter the second groove, and the first scroll and the second groove can move relative to each other to form a second compression chamber; the gas compressed in the first compression chamber can enter the second compression chamber for compression.

[0015] Furthermore, the width of the first scroll is T1, the width of the second scroll is T2; the groove width of the second groove is T1'; the groove width of the first groove is T2'; the pitch of the first scroll and the second scroll is P1; the pitch of the second groove and the first groove is P2; wherein, P2-T2'≤2T1+T1'-P1.

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

[0017] According to another aspect of the present application, an air conditioner is provided, comprising a compressor, which is the above-mentioned compressor.

[0018] The compression structure, compressor and air conditioner provided by the present application have simple structure and reliable assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of the compression structure in the first state in an embodiment of the present application;

[0020] Figure 2 is a cross-sectional view of the compression structure in the second state in an embodiment of the present application;

[0021] Figure 3 is a cross-sectional view of the first scroll in the embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of the first scroll in an embodiment of the present application;

[0023] Figure 5 This is a schematic structural diagram of the second scroll in an embodiment of the present application;

[0024] Figure 6 Schematic diagram of the installation structure of the vortex structure in the embodiment of the present application;

[0025] Figure 7 This is a schematic structural diagram of the second scroll in an embodiment of the present application;

[0026] Figure 8 is a cross-sectional view of a cross section of the second scroll in an embodiment of the present application;

[0027] Figure 9 This is a cross-sectional view of the cross section of the second scroll in the embodiment of the present application.

[0028] 1. First scroll; 11. First base plate; 121. First scroll; 122. Second scroll; 2. Second scroll; 21. Second base plate; 211. First air intake; 212. Second air intake; 213. First air exhaust; 214. Second air exhaust; 221. First groove; 222. Second groove; 23. Communication channel. DETAILED DESCRIPTION

[0029] See also Figure 1-9 As shown, a compression structure includes a first scroll 1 and a second scroll 2, the first scroll 1 includes a first substrate 11; at least two scrolls are provided on the first substrate 11; at least two scrolls are arranged in sequence in the direction of the central axis of the first scroll 1; the second scroll 2 includes a second substrate 21; at least two grooves are provided on the first substrate 11, and at least two grooves are arranged in sequence in the direction of the central axis of the first scroll 1, and each groove is connected in sequence; the grooves are arranged in a one-to-one correspondence with the scrolls; each scroll can enter the corresponding groove, and each scroll can move relative to the corresponding groove to form a corresponding compression chamber; gas can enter each compression chamber in sequence for compression; the present application designs the scroll structure into an axial double-layer or multi-layer structure, that is, forming two or more compression chambers arranged in sequence in the axial direction. The present application adopts a set of scroll structures to form bipolar or multi-stage compression; compared with the bipolar or multi-stage compressors in the prior art, the assembly is simple, the dynamic and static scroll profiles are simple, no repeated positioning processing is required, and the processing accuracy is high. Existing two-stage scroll pumps are mostly dual-body or dual-stationary scroll structures, which are complex to manufacture and difficult to assemble. This application addresses the problem of tooth breakage in existing compressors due to high pressure ratios and the difficulty in assembling two-stage or multi-stage compressors. The first scroll 1 is an orbiting scroll, and the second scroll 2 is a stationary scroll.

[0030] The present application also discloses some embodiments in which adjacent grooves have different groove widths, a step surface is formed between the adjacent grooves, the scrolls correspond to the size and position of the corresponding grooves, the scrolls are arranged in the corresponding grooves, and the scrolls cooperate with the corresponding step surfaces to form each compression chamber sealed in the axial direction. The adjacent grooves are on the same centerline, which can make the scrolls.

[0031] This application also discloses some embodiments in which the width of the scroll decreases in the direction away from the first substrate 11; the width of the groove increases in the direction away from the second substrate 21; the size and position of each groove correspond to the size and position of the corresponding scroll; the scroll can extend into the groove, so that each scroll cooperates with the corresponding groove to form a corresponding compression chamber. The teeth farther away from the substrate are thinner, and the compression space is larger. After completing the first stage of compression, the second stage of compression is switched to use thicker profile teeth to complete the compression with a high pressure ratio, which can ensure the reliability of the compression pump body.

[0032] The present application also discloses some embodiments, in which at least two air intakes are provided on the second substrate 21 , and the air intakes are provided in one-to-one correspondence with the compression chambers, and the air intakes are used to guide gas into the corresponding compression chambers.

[0033] The present application also discloses some embodiments, in which exhaust ports are further provided on the second substrate 21 , and the exhaust ports are provided in one-to-one correspondence with the compression chambers, and the exhaust ports are used to guide the compressed gas to discharge from the corresponding compression chambers.

[0034] The present application also discloses some embodiments, the exhaust port includes a main exhaust port and an intermediate exhaust port; the intake port includes an initial intake port and an intermediate intake port; in each groove, the groove closest to the second substrate 21 forms a final compression chamber with the corresponding scroll; the main exhaust port is connected with the final compression chamber, and the main exhaust port can guide the gas compressed by the final compression chamber to be discharged; in each groove, the groove farthest from the second substrate 21 forms a primary compression chamber with the corresponding scroll, and the primary compression chamber is connected with the initial intake port, and the gas can enter the primary compression chamber through the initial intake port for compression; in the direction of the central axis of the first scroll 1, the area between the final compression chamber and the primary compression chamber is The compression chamber between the cavities is the intermediate compression chamber; the intermediate exhaust port is arranged in one-to-one correspondence with the first-stage compression chamber and the intermediate compression chamber, and the intermediate exhaust port can guide the compressed gas in the corresponding first-stage compression chamber or the corresponding intermediate compression chamber to be discharged; the intermediate air intake port is arranged in one-to-one correspondence with the final-stage compression chamber and the intermediate compression chamber, and the intermediate air intake port can guide the gas to enter the intermediate compression chamber or the corresponding final-stage compression chamber; a connecting channel 23 is also provided on the second substrate 21, and the connecting channel 23 connects the intermediate exhaust port and the corresponding intermediate air intake port; to guide the gas discharged from the intermediate exhaust port to enter the intermediate air intake port, and then the gas can enter each compression chamber in turn for compression.

[0035] The present application also discloses some embodiments, in which the scroll includes a first scroll 121 and a second scroll 122; the first scroll 121 is arranged on the first substrate 11, and the second scroll 122 is arranged on the first scroll 121; the groove includes a first groove 221 and a second groove 222; in the direction away from the second substrate 21, the first groove 221 and the second groove 222 are arranged in sequence, and the first groove 221 is connected to the second groove 222; the second scroll 122 can enter the first groove 221, and the second scroll 122 and the first groove 221 can move relative to each other to form a first compression chamber; the first scroll 121 can enter the second groove 222, and the first scroll 121 and the second groove 222 can move relative to each other to form a second compression chamber; the gas compressed in the first compression chamber can enter the second compression chamber for compression. Specifically, the present invention provides a first scroll 121 and a second scroll 122 on the orbiting scroll. The axial height of the first scroll 121 is smaller than that of the second scroll 122. The width of the first scroll 121 is greater than that of the second scroll 122. The gas compressed in the first compression chamber flows into the second compression chamber for further compression, completing the secondary compression.

[0036] The first compression chamber is composed as follows:

[0037] Compression chamber top: formed by the bottom of the first groove 221 of the static scroll; the compression tooth is the second scroll 122. Compression chamber bottom: formed by the step surface formed between the first groove 221 and the second groove 222.

[0038] The second compression chamber is composed as follows:

[0039] Compression chamber top: the bottom of the compression chamber is formed by the bottom of the second groove 222 of the static scroll and the top of the second scroll 122; compression teeth: formed by the first scroll 121; compression chamber top: formed by the second base plate 21 of the static scroll; the static scroll includes a static scroll cover plate and a static scroll, so that the flow channel is in a closed state.

[0040] The refrigerant is sucked in by the first suction port 211 of the static scroll and enters the first compression chamber. With the revolution of the orbiting and static scrolls, the first-stage compression is completed. The compressed refrigerant is discharged into the first-stage compression flow channel through the first exhaust port 213 in the static scroll, and enters the second suction hole of the second compression chamber through the first-stage compression flow channel. From the second suction hole, it enters the second-stage compression chamber in the lower layer. Through the continuous engagement of the vortex teeth, the refrigerant is finally compressed and discharged into the compressor chamber through the second-stage exhaust hole of the static scroll, completing the entire process of the second-stage compression.

[0041] After completing the first compression, the refrigerant has a higher pressure, requiring a pump body with better rigidity to complete the second compression. The second compression pump body of the present application has thicker scroll teeth and better compression reliability. The second compression chamber is connected to the second air intake port 212 and the second air discharge port 214.

[0042] This application also discloses some embodiments in which the width of the first scroll 121 is T1, the width of the second scroll 122 is T2; the width of the second groove 222 is T1'; the width of the first groove 221 is T2'; the pitch of the first scroll 121 and the second scroll 122 are both P1; the pitch of the second groove 222 and the first groove 221 are both P2; wherein P2-T2'≤2T1+T1'-P1. When the compression structure of this application satisfies the above parameter formula, a two-stage or multi-stage compression chamber of this application can be formed.

[0043] The present application also provides a compressor according to another aspect of the present application, including a compression structure, which is the compression structure described above.

[0044] According to another aspect of the present application, an air conditioner is provided, comprising a compressor, which is the above-mentioned compressor.

[0045] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0046] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A compression structure, characterized in that: include: A first scroll (1), comprising a first substrate (11); at least two scrolls are provided on the first substrate (11); and the at least two scrolls are arranged in sequence in the direction of the central axis of the first scroll (1); and a second scroll (2), the second scroll (2) comprising a second substrate (21); at least two grooves are provided on the second substrate (21); at least two of the grooves are arranged in sequence in the direction of the central axis of the first scroll (1), and the grooves are connected in sequence; the grooves are provided in a one-to-one correspondence with the scrolls; each scroll can enter the corresponding groove, and each scroll can move relative to the corresponding groove to form a corresponding compression chamber; gas can enter each compression chamber in sequence for compression; At least two air intake ports are also provided on the second substrate (21), and the air intake ports are provided in one-to-one correspondence with the compression chambers, and the air intake ports are used to guide gas into the corresponding compression chambers.

2. The compression structure according to claim 1, characterized in that The groove widths of two adjacent grooves are different, and a step surface is formed between the two adjacent grooves; the scroll corresponds to the size and position of the corresponding groove; the scroll is arranged in the corresponding groove, and the scroll cooperates with the corresponding step surface to form each compression chamber that is sealed in the axial direction.

3. The compression structure according to claim 1, characterized in that In the direction away from the first substrate (11), the width of the scroll decreases successively; in the direction away from the second substrate (21), the width of the groove increases successively; the size and position of each groove correspond to the size and position of the corresponding scroll; the scroll can extend into the groove, so that each scroll cooperates with the corresponding groove to form the corresponding compression chamber.

4. The compression structure according to claim 1, characterized in that The second substrate (21) is also provided with an exhaust port, which is arranged in a one-to-one correspondence with the compression chamber, and is used to guide the compressed gas to discharge from the corresponding compression chamber.

5. The compression structure according to claim 4, characterized in that The exhaust port includes a total exhaust port and an intermediate exhaust port; the intake port includes an initial intake port and an intermediate intake port; in each of the grooves, the groove closest to the second substrate (21) forms a final compression chamber with the corresponding scroll; the total exhaust port is communicated with the final compression chamber, and the total exhaust port can guide the gas compressed by the final compression chamber to be discharged; in each of the grooves, the groove farthest from the second substrate (21) forms a first-stage compression chamber with the corresponding scroll, and the first-stage compression chamber is communicated with the initial intake port, and gas can enter the first-stage compression chamber through the initial intake port for compression; in the direction of the central axis of the first scroll (1), the compression chamber located between the final compression chamber and the first-stage compression chamber is the intermediate compression chamber; the intermediate exhaust port is arranged in a one-to-one correspondence with the first-stage compression chamber and the intermediate compression chamber, and the intermediate exhaust port can guide the gas compressed in the corresponding first-stage compression chamber or the corresponding intermediate compression chamber to be discharged; The intermediate air intake port is arranged in a one-to-one correspondence with the final compression chamber and the intermediate compression chamber, and the intermediate air intake port can guide the gas into the intermediate compression chamber or the corresponding final compression chamber; a connecting channel (23) is also provided on the second substrate (21), and the connecting channel (23) connects the intermediate exhaust port and the corresponding intermediate air intake port; so as to guide the gas discharged from the intermediate exhaust port to enter the intermediate air intake port, thereby allowing the gas to enter each of the compression chambers in turn for compression.

6. The compression structure according to claim 1, wherein: The scroll comprises a first scroll (121) and a second scroll (122); the first scroll (121) is arranged on the first substrate (11), and the second scroll (122) is arranged on the first scroll (121); the groove comprises a first groove (221) and a second groove (222); in a direction away from the second substrate (21), the first groove (221) and the second groove (222) are arranged in sequence, and the first groove (221) is connected to the second groove (222); the second scroll (122) can enter the first groove (221), and the second scroll (122) and the first groove (221) can move relative to each other to form a first compression chamber; the first scroll (121) can enter the second groove (222), and the first scroll (121) and the second groove (222) can move relative to each other to form a second compression chamber; the gas compressed in the first compression chamber can enter the second compression chamber for compression.

7. The compression structure according to claim 6, characterized in that The width of the first scroll (121) is T1, and the width of the second scroll (122) is T2; the groove width of the second groove (222) is T1'; the groove width of the first groove (221) is T2'; the pitch of the first scroll (121) and the second scroll (122) is P1; the pitch of the second groove (222) and the first groove (221) is P2; wherein P2-T2'≤2T1+T1'-P1.

8. A compressor, characterized in that: The compressor comprises the compression structure according to any one of claims 1 to 7.

9. An air conditioner, characterized in that: The air conditioner includes the compressor described in claim 8.

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