Scroll compressor suitable for all types of refrigerants

Abstract

A scroll compressor suitable for all types of refrigerants, the scroll compressor comprising a housing (1), a compression assembly and a driving member, wherein the housing (1) is provided with an air suction port (111) and an exhaust port (121); the compression assembly is located inside the housing (1) and comprises at least two orbiting scrolls (21) and at least two stationary scrolls (22), the orbiting scrolls (21) and the stationary scrolls (22) being arranged in a one-to-one correspondence, the orbiting scrolls (21) being rotationally connected to the housing (1), the stationary scrolls (22) being fixedly connected to the housing (1), and the orbiting scrolls (21) and the stationary scrolls (22) together forming a compression cavity, which is in communication with the air suction port (111) and the exhaust port (121); and the driving member is located inside the housing (1) and is configured to drive all the orbiting scrolls (21) to rotate. The number of accessories for arrangement can be effectively reduced, such that the use cost is reduced, and the occupied space can be effectively reduced, thus the overall structure is more compact.

Description

Scroll compressor suitable for all refrigerants

[0001] This application claims priority to Chinese patent applications filed on February 19, 2025, with application numbers 202510181688.6 and 202520263011.2, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of compressor technology, and for example to a scroll compressor applicable to all refrigerants. Background Technology

[0003] A scroll compressor is a compressible volumetric compressor consisting of a fixed stationary scroll and an eccentrically rotating moving scroll. During the intake, compression, and exhaust processes, the stationary scroll is fixed inside the casing, while the moving scroll is driven and constrained by an anti-rotation mechanism, rotating in a plane around the base circle of the stationary scroll with a very small radius. Gas is drawn into the periphery of the stationary scroll through the intake port. As the moving scroll rotates, the gas is gradually compressed within multiple crescent-shaped compression chambers formed by the engagement of the moving and stationary scrolls, and then continuously discharged outwards through the exhaust port.

[0004] In related technologies, some application scenarios require the deployment of multiple scroll compressors to work together to meet the operating requirements. However, deploying multiple compressors individually would take up more space and involve more connecting pipes, power supplies, and other accessories, which would limit the use of the equipment. Summary of the Invention

[0005] This application provides a scroll compressor applicable to all refrigerants, which has at least two moving scroll plates and a stationary scroll plate inside the casing of an independent compressor, effectively ensuring compression efficiency, reducing space occupation and accessory setup, and has strong applicability.

[0006] A scroll compressor applicable to all refrigerants, comprising:

[0007] The outer casing has an air intake and an exhaust port;

[0008] A compression assembly is located inside the housing. The compression assembly includes at least two moving scroll disks and at least two stationary scroll disks. The moving scroll disks and stationary scroll disks are arranged in a one-to-one correspondence. The moving scroll disks are rotatably connected to the housing, and the stationary scroll disks are fixedly connected to the housing. The moving scroll disks and stationary scroll disks together form a compression chamber that communicates with the intake port and the exhaust port.

[0009] The drive unit, located inside the housing, is configured to drive all of the moving scroll disks to rotate.

[0010] In one embodiment, the driving component includes a through-shaft motor, the through-shaft motor including a motor housing and a motor shaft rotatably disposed in the motor housing, the motor housing being fixed inside the outer casing, and both ends of the motor shaft extending out of the motor housing;

[0011] The compression assembly includes two moving scroll disks and two stationary scroll disks, with each scroll disk and stationary scroll disk corresponding to the other. The two moving scroll disks are respectively located at opposite ends of the motor shaft, and are respectively connected to both ends of the motor shaft.

[0012] In one embodiment, a sleeve is provided on the side of the moving scroll disk facing the motor shaft, and the moving scroll disk is fixedly sleeved on the motor shaft through the sleeve.

[0013] In one embodiment, one of the motor shaft and the sleeve is provided with a keyway, and the other is provided with a corresponding connecting key, which is inserted into the keyway.

[0014] In one embodiment, the moving scroll disk has a connecting shaft on the side facing the motor shaft, and the connecting shaft is configured to be connected to the motor shaft via a coupling.

[0015] In one embodiment, a support bearing is provided inside the housing, the motor shaft passes through the support bearing, and is rotatably connected to the housing through the support bearing.

[0016] In one embodiment, an electrical control is also included, the electrical control being configured to drive the motor shaft of the through-shaft motor to rotate.

[0017] In one embodiment, the number of air intakes is the same as the number of moving vortex disks.

[0018] In one embodiment, the number of exhaust ports is the same as the number of moving scroll plates.

[0019] In one embodiment, the outer casing is provided with an air intake connector, and the air intake port is opened on the air intake connector; the outer casing is provided with an exhaust connector, and the exhaust port is opened on the exhaust connector. Attached Figure Description

[0020] Figure 1 is a structural schematic diagram of the scroll compressor applicable to all refrigerants provided in this application;

[0021] Figure 2 is a schematic diagram of a half-section of the casing of a scroll compressor applicable to all refrigerants provided in this application;

[0022] Figure 3 is a schematic diagram of the compression component and driving component provided in an embodiment of this application;

[0023] Figure 4 is a schematic diagram of the compression component and driving component provided in another embodiment of this application;

[0024] Figure 5 is a schematic diagram of the compression component and driving component provided in another embodiment of this application.

[0025] In the diagram: 1. Outer shell; 11. Intake connector; 111. Intake port; 12. Exhaust connector; 121. Exhaust port; 21. Moving scroll plate; 211. Sleeve; 212. Connecting key; 213. Adapter shaft; 22. Stationary scroll plate; 31. Through-shaft motor; 311. Motor housing; 312. Motor shaft; 32. Non-through-shaft motor; 33. Gear assembly; 331. First transmission gear; 332. Second transmission gear; 333. Third transmission gear; 334. Fourth transmission gear; 335. Transmission shaft; 4. Electrical control unit. Detailed Implementation

[0026] The present application will now be described in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit its scope. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.

[0027] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0030] This embodiment provides a scroll compressor applicable to all refrigerants. Referring to Figures 1 to 3, the scroll compressor includes a housing 1, a compression assembly, and a drive unit. The housing 1 has an intake port 111 and an exhaust port 121. The compression assembly is located inside the housing 1 and includes at least two moving scroll plates 21 and at least two stationary scroll plates 22. The moving scroll plates 21 and stationary scroll plates 22 are arranged in a one-to-one correspondence. The moving scroll plates 21 are rotatably connected to the housing 1, and the stationary scroll plates 22 are fixedly connected to the housing 1. The moving scroll plates 21 and stationary scroll plates 22 together form a compression chamber communicating with the intake port 111 and the exhaust port 121. The drive unit is located inside the housing 1 and is configured to drive all the moving scroll plates 21 to rotate.

[0031] In this embodiment, at least two moving scroll plates 21 and at least two stationary scroll plates 22 are provided within the housing 1 of an independent compressor. Compared with setting multiple separate scroll compressors, this effectively reduces the number of accessories, lowers operating costs, and reduces space occupation, resulting in a more compact overall structure. This makes it suitable for applications with limited space, such as small air conditioning units and vehicle air conditioning systems, thus improving applicability. Furthermore, the compression assembly includes at least two moving scroll plates 21 and at least two stationary scroll plates 22, with each plate corresponding to the others, effectively providing at least two compression chambers within the housing 1. Driven by a driving component, all the moving scroll plates 21 rotate, drawing air into the housing 1 through the intake port 111. After being compressed simultaneously by multiple compression chambers, the air is continuously discharged outwards through the exhaust port 121, effectively improving compression efficiency, reducing refrigerant pressure loss and heat exchange loss within the housing 1, increasing the overall energy efficiency ratio of the refrigeration system, reducing energy consumption, and maintaining high performance over a wider operating range.

[0032] In this embodiment, the driving component includes a through-shaft motor 31, which includes a motor housing 311 and a motor shaft 312 rotatably disposed within the motor housing 311. The motor housing 311 is fixed inside the outer casing 1, and both ends of the motor shaft 312 extend out of the motor housing 311. The compression assembly includes two moving scroll plates 21 and two stationary scroll plates 22, which are arranged in a one-to-one correspondence. The two moving scroll plates 21 are respectively disposed at opposite ends of the motor shaft 312, and are respectively connected to both ends of the motor shaft 312. When the motor shaft 312 of the through-shaft motor 31 rotates, it can simultaneously drive the two moving scroll plates 21 at both ends to rotate, thereby enabling the two compression chambers to compress air simultaneously.

[0033] In some optional embodiments, a sleeve 211 is provided on the side of the moving scroll plate 21 facing the motor shaft 312, and the moving scroll plate 21 is fixedly sleeved on the motor shaft 312 through the sleeve 211. The sleeve 211 enables effective fixation between the moving scroll plate 21 and the corresponding side of the motor shaft 312. One of the motor shaft 312 and the sleeve 211 has a keyway, and the other has a corresponding connecting key 212, which is inserted into the keyway. In this embodiment, the keyway is opened on the side wall of the sleeve 211, and the connecting key 212 is fixedly provided on the motor shaft 312. When the sleeve 211 is sleeved on the motor shaft 312, the connecting key 212 is inserted into the keyway. This arrangement can prevent the moving scroll plate 21 from rotating relative to the motor shaft 312, ensuring reliable fixation between the moving scroll plate 21 and the motor shaft 312.

[0034] In some alternative embodiments, the moving scroll plate 21 has a connecting shaft (not shown) on the side facing the motor shaft 312, and the connecting shaft is connected to the corresponding end of the motor shaft 312 via a coupling. By providing a coupling, an effective connection between the moving scroll plate 21 and the corresponding side of the motor shaft 312 can also be achieved.

[0035] Optionally, a support bearing (not shown) is provided inside the housing 1, through which the motor shaft 312 passes and is rotatably connected to the housing 1. The support bearing effectively supports the suspended portion of the motor shaft 312 within the housing 1 and provides a rotatable connection with the housing 1, further ensuring structural reliability and stability.

[0036] In this embodiment, the scroll compressor applicable to all refrigerants also includes an electrical control 4, which is configured to drive the motor shaft 312 of the through-shaft motor 31 to rotate. Optionally, the electrical control 4 can be configured as a printed circuit board (PCB).

[0037] In this embodiment, the number of intake ports 111 is the same as the number of moving scroll plates 21. The number of exhaust ports 121 is the same as the number of moving scroll plates 21.

[0038] In this embodiment, the outer casing 1 is provided with an air intake connector 11, and an air intake port 111 is opened on the air intake connector 11. The outer casing 1 is provided with an exhaust connector 12, and an exhaust port 121 is opened on the exhaust connector 12. By providing the air intake connector 11 and the exhaust connector 12, it is possible to connect to external pipelines as needed.

[0039] In some alternative embodiments, referring to FIG4, the drive unit includes two non-through-shaft motors 32, each corresponding to one of the two moving scroll plates 21. It is understood that the non-through-shaft motors 32 are conventional motors with only one end extending from the output shaft. The output shaft of each non-through-shaft motor 32 is connected to the corresponding moving scroll plate 21. By providing two non-through-shaft motors 32, the rotation speed of the two moving scroll plates 21 can be independently controlled, thereby adapting and adjusting the compression conditions of the two compression chambers to improve performance to a certain extent.

[0040] In some optional embodiments, the compression assembly may also be provided with two or more moving scroll plates 21 and two or more stationary scroll plates 22, for example, three moving scroll plates 21 and three stationary scroll plates 22. Referring to FIG5, three moving scroll plates 21 and three stationary scroll plates 22 are provided. In addition to the through-shaft motor 31, the driving component also includes a gear assembly 33 for transmitting power. The gear assembly 33 is disposed in the housing 1 and includes a first transmission gear 331, a second transmission gear 332, a third transmission gear 333, a fourth transmission gear 334, and a transmission shaft 335. Among the three moving scroll plates 21, two of them are still connected by the through-shaft motor 31, and a transition shaft 213 is provided on one side of the remaining moving scroll plate 21. The first transmission gear 331 is fixedly sleeved on the motor shaft 312 of the through-shaft motor 31, the fourth transmission gear 334 is fixedly sleeved on the adapter shaft 213, and the second transmission gear 332 and the third transmission gear 333 are respectively fixedly sleeved on both ends of the transmission shaft 335, which is rotatably connected to the outer casing 1. The first transmission gear 331 is meshed with the second transmission gear 332, and the third transmission gear 333 is meshed with the fourth transmission gear 334.

[0041] When the through-shaft motor 31 is working, the motor shaft 312 rotates to drive the two moving scroll plates 21 connected to it to rotate. The rotation of the motor shaft 312 can transmit power to the other moving scroll plate 21 in sequence through the first transmission gear 331, the second transmission gear 332, the transmission shaft 335, the third transmission gear 333, the fourth transmission gear 334, and the adapter shaft 213, so that the three moving scroll plates 21 rotate simultaneously and realize the synchronous operation of the three compression chambers.

[0042] In summary, the scroll compressor provided in this embodiment significantly enhances cooling / heating capacity compared to conventional compressors. It features at least two moving scroll plates 21 and at least two stationary scroll plates 22, with each plate corresponding to the other, allowing for simultaneous refrigerant compression. This enables the handling of a larger refrigerant flow rate within the same timeframe. The electrical control 4 allows for simultaneous control of at least two moving scroll plates 21, facilitating convenient control and high integration. Compared to using multiple individual scroll compressors, this design effectively reduces component requirements, lowers operating costs, and minimizes space requirements, resulting in a more compact overall structure. This makes it suitable for applications in space-constrained environments such as small air conditioning units and vehicle air conditioning systems, enhancing its applicability. Because at least two sets of moving scroll plates 21 and stationary scroll plates 22 operate simultaneously, the compression capacity is significantly enhanced, enabling rapid refrigerant compression and delivery to the heat exchanger after startup, allowing the indoor or cooled space to reach the set temperature more quickly. Furthermore, the compressor can be operated under partial load conditions, allowing for flexible control of the two compression units, enhancing its practicality.

Claims

1. A scroll compressor applicable to all refrigerants, comprising: The outer casing (1) has an air intake (111) and an exhaust (121); A compression assembly is located inside the housing (1). The compression assembly includes at least two moving scroll disks (21) and at least two stationary scroll disks (22). The moving scroll disks (21) and the stationary scroll disks (22) are arranged in a one-to-one correspondence. The moving scroll disks (21) are rotatably connected to the housing (1), and the stationary scroll disks (22) are fixedly connected to the housing (1). The moving scroll disks (21) and the stationary scroll disks (22) together form a compression chamber that communicates with the intake port (111) and the exhaust port (121). The drive unit, located inside the housing (1), is configured to drive all of the moving scrolls (21) to rotate.

2. The scroll compressor applicable to all refrigerants according to claim 1, wherein, The driving component includes a through-shaft motor (31), which includes a motor housing (311) and a motor shaft (312) rotatably disposed in the motor housing (311). The motor housing (311) is fixed inside the outer casing (1), and both ends of the motor shaft (312) extend out of the motor housing (311). The compression assembly includes two moving scroll disks (21) and two stationary scroll disks (22), with the moving scroll disks (21) and stationary scroll disks (22) arranged in a one-to-one correspondence. The two moving scroll disks (21) are respectively arranged at opposite ends of the motor shaft (312), and the two moving scroll disks (21) are respectively connected to the two ends of the motor shaft (312).

3. The scroll compressor applicable to all refrigerants according to claim 2, wherein, The moving scroll plate (21) has a sleeve (211) on the side facing the motor shaft (312), and the moving scroll plate (21) is fixedly sleeved on the motor shaft (312) through the sleeve (211).

4. The scroll compressor applicable to all refrigerants according to claim 3, wherein, One of the motor shaft (312) and the sleeve (211) is provided with a keyway, and the other is provided with a connecting key (212), which is inserted into the keyway.

5. The scroll compressor applicable to all refrigerants according to claim 2, wherein, The moving scroll plate (21) has a connecting shaft on the side facing the motor shaft (312), and the connecting shaft is configured to be connected to the motor shaft (312) via a coupling.

6. The scroll compressor applicable to all refrigerants according to claim 2, wherein, The housing (1) is provided with a support bearing, and the motor shaft (312) passes through the support bearing and is rotatably connected to the housing (1) through the support bearing.

7. The scroll compressor applicable to all refrigerants according to claim 2 further includes an electrical control (4), the electrical control (4) being configured to drive the motor shaft (312) of the through-shaft motor (31) to rotate.

8. The scroll compressor applicable to all refrigerants according to claim 1, wherein, The number of air intakes (111) is the same as the number of moving vortex disks (21).

9. The scroll compressor applicable to all refrigerants according to claim 1, wherein, The number of exhaust ports (121) is the same as the number of moving scroll plates (21).

10. The scroll compressor applicable to all refrigerants according to claim 1, wherein, The outer shell (1) is provided with an air intake connector (11), and the air intake port (111) is opened on the air intake connector (11); the outer shell (1) is provided with an exhaust connector (12), and the exhaust port (121) is opened on the exhaust connector (12).

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