Scroll assembly and compressor

Abstract

This invention belongs to the field of compressor technology and discloses a scroll assembly and a compressor. The scroll assembly includes a stationary scroll, a moving scroll, a seal, and an intermediate body. The moving scroll is rotatably mounted on the intermediate body, and the stationary and moving scrolls cooperate to form a compression chamber. An arc-shaped flow channel is provided between the stationary scroll and the intermediate body. A liquid inlet and a liquid outlet are respectively provided at both ends of the arc-shaped flow channel. Along the circumference of the stationary scroll, the liquid outlet is located between the liquid inlet and the air inlet, and the liquid outlet communicates with the compression chamber. The liquid inlet is used to draw in the medium. During operation, the air pressure in the compression chamber is low. Air is drawn in through the air inlet, and the medium inside the compressor housing enters the compression chamber sequentially along the liquid inlet, the arc-shaped flow channel, and the liquid outlet, ensuring normal circulation of the medium. Simultaneously, due to the presence of the arc-shaped flow channel, most of the medium is stored in the arc-shaped flow channel and the housing cavity, with only a small portion entering the compression chamber, thus effectively avoiding liquid slugging and ensuring the functionality and service life of the scroll assembly.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to scroll assembly and compressor. Background Technology

[0002] A scroll compressor is a positive displacement compressor. The compression component consists of a moving scroll and a stationary scroll. It compresses gas by utilizing the continuous change of a closed volume formed by the relative revolution of the moving and stationary scrolls. Gas is drawn into the compression space formed by the moving and stationary scrolls. As the moving scroll moves, a high-pressure area is formed on the stationary scroll. Since scroll compressors contain a lot of liquid substances, such as cooling oil, lubricating oil, and possibly liquid refrigerant, these liquid substances will enter the high-pressure area of ​​the stationary scroll. Because liquid substances cannot be compressed, under high pressure, they will turn into high-speed droplets, thereby damaging or puncturing the stationary scroll. This phenomenon is called liquid slugging.

[0003] In existing technologies, a straight oil circulation hole is typically installed at the bottom of the stationary scroll. This hole directly connects the compression chambers of the moving and stationary scrolls to the refrigerant oil deposited in the compressor housing. When the compressor is working, it draws the refrigerant oil deposited in the compressor housing into the compression chambers of the moving and stationary scrolls, thus maintaining the circulation of the refrigerant oil and lubricating the moving parts of the compressor. However, with the diversification of air conditioning usage scenarios in new energy vehicles, especially the increasing sophistication and complexity of their thermal management systems, air conditioning compressors often draw in large amounts of liquid refrigerant, which deposits in the oil sump inside the compressor housing. Alternatively, to meet the lubrication needs of mechanical parts, large amounts of refrigerant oil are artificially injected into the oil sump inside the compressor housing. Furthermore, due to the presence of the straight hole, the liquid level inside the compression chambers of the moving and stationary scrolls is always consistent with the liquid level in the oil sump inside the compressor housing. This results in a high liquid level in the compression chambers of the moving and stationary scrolls when there is a large amount of liquid circulating in the air conditioning system, sometimes even completely submerging the compression chambers, causing liquid slugging and ultimately damaging the compressor scrolls or even causing compressor failure.

[0004] Therefore, a scroll assembly and compressor are needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a scroll assembly and a compressor that can ensure that the liquid level in the suction chamber of the moving and stationary scrolls is always at a low level, avoid liquid slugging, and thus ensure the normal function of the compressor.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A scroll assembly includes a stationary scroll, a moving scroll, a seal, and an intermediate body. The stationary scroll and the intermediate body are fixedly disposed, while the moving scroll is rotatably disposed on the intermediate body. The stationary scroll and the moving scroll cooperate to form a compression chamber. An air inlet is provided on the stationary scroll, which communicates with the compression chamber. An arc-shaped flow channel is provided between the stationary scroll and the intermediate body, extending circumferentially along the stationary scroll. The seal is disposed between the stationary scroll and the intermediate body to seal the arc-shaped flow channel. A liquid inlet and a liquid outlet are respectively provided at both ends of the arc-shaped flow channel. Along the circumference of the stationary scroll, the liquid outlet is located between the liquid inlet and the air inlet, and communicates with the compression chamber. The liquid inlet is used to draw in the medium from the inner cavity of the compressor housing.

[0008] As an optional technical solution, an arc-shaped groove is provided on the stationary vortex disk, the arc-shaped groove extends along the circumference of the stationary vortex disk, and the arc-shaped groove and the end face of the intermediate body near the stationary vortex disk are sealed by the sealing element to form the arc-shaped flow channel.

[0009] As an optional technical solution, the sealing element includes a body and a protrusion. The protrusion protrudes from the body and is configured to cooperate with the arcuate groove. The protrusion is located on the side of the body away from the intermediate body.

[0010] As an optional technical solution, the liquid inlet includes a liquid inlet and a first connecting channel. The liquid inlet is located on the outer side wall of the static vortex disk, and the first connecting channel is used to connect the liquid inlet and one end of the arc-shaped flow channel.

[0011] As an optional technical solution, the liquid outlet includes a liquid outlet and a second connecting channel. The liquid outlet is opened on the inner side wall of the static vortex disk, and the second connecting channel is used to connect the liquid outlet and the other end of the arc-shaped flow channel.

[0012] As an optional technical solution, the cross-sectional dimension of the liquid outlet is smaller than that of the air inlet.

[0013] As an optional technical solution, the first connection channel and / or the second connection channel both extend radially along the static vortex disk.

[0014] As an optional technical solution, an arc-shaped groove is provided on the intermediate body, the arc-shaped groove extends along the circumference of the intermediate body, and the arc-shaped groove and the end face of the stationary vortex disk near the intermediate body are sealed by the sealing element to form the arc-shaped flow channel.

[0015] As an optional technical solution, the arc-shaped flow channel, the liquid inlet and the liquid outlet form an oil channel. Two sets of oil channels are provided, and the two sets of oil channels are arranged at intervals. Two air inlets are also provided on the stationary vortex plate. The two air inlets and the two sets of oil channels are arranged in a one-to-one correspondence.

[0016] The present invention also adopts the following technical solutions:

[0017] The compressor includes a housing and a drive unit. The housing has an oil sump. The compressor also includes a scroll assembly as described above. The scroll assembly is disposed inside the housing. The drive unit is rotatably disposed inside the housing. The stationary scroll, the intermediate body, and the seal are fixedly disposed. The drive unit is drivenly connected to the moving scroll to drive the moving scroll to rotate. The liquid inlet is connected to the oil sump.

[0018] The beneficial effects of this invention are:

[0019] This invention discloses a scroll assembly comprising a stationary scroll, a moving scroll, a seal, and an intermediate body. The stationary scroll and the intermediate body are fixedly disposed, while the moving scroll is rotatably disposed on the intermediate body. The stationary and moving scrolls cooperate to form a compression chamber. An air inlet is provided on the stationary scroll, which communicates with the compression chamber. An arc-shaped flow channel is provided between the stationary scroll and the intermediate body, extending circumferentially along the stationary scroll. The seal is disposed between the stationary scroll and the intermediate body to seal the arc-shaped flow channel. A liquid inlet and a liquid outlet are respectively provided at both ends of the arc-shaped flow channel. Along the circumference of the stationary scroll, the liquid outlet is located between the liquid inlet and the air inlet, and communicates with the compression chamber. The liquid inlet is used to draw in the medium from the inner cavity of the compressor housing. This scroll assembly, by providing an arc-shaped flow channel… Furthermore, one end of the arc-shaped flow channel is connected to the compression chamber through the liquid outlet, and the other end is connected to the inner cavity of the compressor housing through the liquid inlet. Along the circumference of the stationary scroll, the liquid outlet is located between the liquid inlet and the air inlet. When stationary, the liquid level in the arc-shaped flow channel is always consistent with the liquid level in the inner cavity of the compressor housing. When the compressor is working, the air pressure in the compression chamber is low, and air is introduced through the air inlet. The medium in the inner cavity of the compressor housing will sequentially enter the compression chamber along the liquid inlet, the arc-shaped flow channel, and the liquid outlet to ensure normal circulation of the medium. At the same time, due to the existence of the arc-shaped flow channel, most of the medium will be stored in the arc-shaped flow channel and the inner cavity of the housing, and only a small portion of the medium will enter the compression chamber, thereby effectively avoiding liquid slugging and ensuring the functionality and service life of the scroll assembly.

[0020] This invention also discloses a compressor comprising a housing and a drive unit. The housing has an oil sump, and the compressor further includes the aforementioned scroll assembly, which is disposed inside the housing. The drive unit is rotatably disposed inside the housing. The stationary scroll, intermediate body, and seals are fixedly disposed. The drive unit is drively connected to the moving scroll to drive its rotation. The liquid inlet is connected to the oil sump. This compressor ensures the circulation of the medium during operation while preventing a large amount of medium from entering the compression chambers of the moving and stationary scrolls, thus avoiding liquid slugging and extending the compressor's service life. Attached Figure Description

[0021] Figure 1 This is an axial sectional view of the vortex disk assembly of Embodiment 1 of the present invention;

[0022] Figure 2 This is a radial cross-sectional view of the vortex assembly of Embodiment 1 of the present invention;

[0023] Figure 3 This is a partially exploded view of the vortex disk assembly of Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the static vortex disk according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the sealing element according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the second connecting channel of the static vortex disk in an embodiment of the present invention, which is set at an angle to the radial direction;

[0027] Figure 7 yes Figure 6 Sectional view of AA;

[0028] Figure 8 This is an axial sectional view of the compressor according to an embodiment of the present invention;

[0029] Figure 9 This is a radial sectional view of the compressor according to an embodiment of the present invention;

[0030] Figure 10 This is an axial sectional view of the vortex assembly of Embodiment 2 of the present invention;

[0031] Figure 11 This is a radial cross-sectional view of the vortex disk assembly of Embodiment 2 of the present invention;

[0032] Figure 12 This is a partially exploded view of the vortex disk assembly of Embodiment 2 of the present invention;

[0033] Figure 13 This is a schematic diagram of the structure of the intermediate in Embodiment 2 of the present invention;

[0034] Figure 14 yes Figure 13 Sectional view of BB;

[0035] Figure 15 This is a schematic diagram of the static vortex disk in Embodiment 2 of the present invention;

[0036] Figure 16 yes Figure 15 A sectional view of CC.

[0037] In the picture:

[0038] 1. Housing; 101. First housing; 1011. Intake port; 102. Second housing; 1021. Exhaust port; 103. Oil sump; 2. Drive component; 201. Output shaft;

[0039] 10. Static vortex plate; 11. Air inlet; 12. Arc-shaped flow channel; 121. Arc-shaped groove; 13. Liquid inlet; 131. Liquid inlet; 132. First connecting channel; 14. Liquid outlet; 141. Liquid outlet; 142. Second connecting channel; 15. Oil channel;

[0040] 20. Moving scroll; 21. Compression chamber;

[0041] 30. Seal; 31. Body; 32. Protrusion;

[0042] 40. Intermediate. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0044] In the description of this invention, unless otherwise explicitly 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 invention based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly 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 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 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.

[0046] In the description of this embodiment, the terms "upper," "lower," "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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0047] like Figures 1 to 7 As shown, this embodiment provides a scroll assembly, which includes a stationary scroll 10, a moving scroll 20, a seal 30, and an intermediate body 40. The stationary scroll 10 and the intermediate body 40 are fixedly disposed, while the moving scroll 20 is rotatably disposed on the intermediate body 40. The stationary scroll 10 and the moving scroll 20 cooperate to form a compression chamber 21. An air inlet 11 is provided on the stationary scroll 10, and the air inlet 11 communicates with the compression chamber 21. A space is provided between the stationary scroll 10 and the intermediate body 40. There is an arc-shaped flow channel 12, which extends along the circumference of the stationary volute 10. The sealing element 30 is disposed between the stationary volute 10 and the intermediate body 40 to seal the arc-shaped flow channel 12. The two ends of the arc-shaped flow channel 12 are respectively provided with a liquid inlet 13 and a liquid outlet 14. Along the circumference of the stationary volute 10, the liquid outlet 14 is located between the liquid inlet 13 and the air inlet 11, and the liquid outlet 14 is connected to the compression chamber 21. The liquid inlet 13 is used to draw in the medium inside the compressor housing.

[0048] Specifically, in this embodiment, the stationary volute 10 and the intermediate body 40 are fixedly disposed, and the moving volute 20 is rotatably disposed on the side of the intermediate body 40 near the stationary volute 10. The stationary volute 10 and the moving volute 20 cooperate to form a compression chamber 21. When the moving volute 20 rotates, the compression chamber 21 is used to compress the gas. The stationary volute 10 is provided with an air inlet 11 communicating with the compression chamber 21, and the gas enters the compression chamber 21 through the air inlet 11. A circumferential space is provided between the stationary volute 10 and the intermediate body 40. The extended arc-shaped flow channel 12 has a liquid inlet 13 and a liquid outlet 14 at both ends. The liquid outlet 14 is located between the air inlet 11 and the liquid inlet 13. The liquid inlet 13 is used to draw in the medium from the inner cavity of the compressor housing. The liquid outlet 14 is connected to the compression chamber 21. The liquid level in the arc-shaped flow channel 12 is always consistent with the liquid level in the inner cavity of the compressor housing. The sealing element 30 is located between the intermediate body 40 and the stationary vortex plate 10 to ensure the sealing performance of the arc-shaped flow channel 12 and prevent the leakage of the medium. In actual use, when the compressor is working, the gas pressure in the compression chamber 21 is low. Gas enters the compression chamber 21 through the air inlet 11. At the same time, the medium in the inner cavity of the compressor housing enters the compression chamber 21 in sequence along the liquid inlet 13, the arc-shaped flow channel 12 and the liquid outlet 14 to ensure the normal circulation of the medium. At the same time, due to the presence of the arc-shaped flow channel 12, most of the medium will be stored in the arc-shaped flow channel 12 and the inner cavity of the housing, and only a small part of the medium enters the compression chamber 21, thereby effectively avoiding liquid slugging and ensuring the functionality and service life of the scroll assembly.

[0049] Specifically, the medium in this embodiment includes liquid refrigeration oil or liquid refrigerant or a mixture of the two.

[0050] Furthermore, such as Figures 2 to 4 As shown, an arc-shaped groove 121 is formed on the stationary volute 10. The arc-shaped groove 121 extends circumferentially along the stationary volute 10. The arc-shaped groove 121 and the end face of the intermediate body 40 near the stationary volute 10 are sealed by a sealing element 30 to form an arc-shaped flow channel 12. Specifically, in this embodiment, an arc-shaped groove 121 is formed circumferentially along the stationary volute 10, and a sealing element 30 is provided between the stationary volute 10 and the intermediate body 40. The sealing element 30 can ensure good sealing performance between the arc-shaped groove 121 and the end face of the intermediate body 40 near the stationary volute 10, avoiding leakage of the medium. This structure is relatively easy to process and effectively reduces processing costs.

[0051] Furthermore, such as Figure 5As shown, the seal 30 includes a body 31 and a protrusion 32. The protrusion 32 protrudes from the body 31 and is configured to cooperate with the arc-shaped groove 121. The protrusion 32 is located on the side of the body 31 away from the intermediate body 40. Specifically, in this embodiment, the protrusion 32 of the seal 30 protrudes from the body 31. The body 31 ensures that the seal 30 itself has a good shape, avoiding easy deformation during installation and ensuring the installation stability of the seal 30. The protrusion 32 and the arc-shaped groove 121 are configured to cooperate. After the installation of the seal 30, the intermediate body 40 and the stationary volute 10 are completed, the protrusion 32 is located on the side of the body 31 away from the intermediate body 40, ensuring that the protrusion 32 can abut against the end face of the groove opening side of the arc-shaped groove 121, thereby further ensuring good sealing performance and preventing media leakage.

[0052] Furthermore, in this embodiment, as Figure 6 As shown, the liquid inlet 13 includes a liquid inlet 131 and a first connecting channel 132. The liquid inlet 131 is opened on the outer side wall of the stationary vortex disk 10, and the first connecting channel 132 is used to connect the liquid inlet 131 and one end of the arc-shaped flow channel 12.

[0053] Furthermore, in this embodiment, as Figure 6 As shown, the liquid outlet 14 includes a liquid outlet 141 and a second connecting channel 142. The liquid outlet 141 is opened on the inner side wall of the stationary vortex disk 10, and the second connecting channel 142 is used to connect the liquid outlet 141 and the other end of the arc-shaped flow channel 12.

[0054] Specifically, in this embodiment, the cross-sectional shape of the liquid inlet 131 and the cross-sectional shape of the liquid outlet 141 are both circular. This structure is easy to process, which not only improves processing efficiency but also reduces processing costs.

[0055] In another embodiment, the cross-sectional shape of the liquid inlet 131 and the cross-sectional shape of the liquid outlet 141 can be specifically set according to actual use, and no limitation is made here.

[0056] Furthermore, the cross-sectional dimension of the liquid outlet 141 is smaller than that of the air inlet 11. Specifically, in this embodiment, this arrangement allows for a larger air intake volume, resulting in less medium entering the compression chamber 21 through the arc-shaped flow channel 12 during air intake. This ensures normal circulation of the medium while preventing a large amount of medium from entering the compression chamber 21 and causing liquid hammer.

[0057] Furthermore, such as Figure 4As shown, the first connecting channel 132 and / or the second connecting channel 142 both extend radially along the stationary volute 10. Specifically, in this embodiment, the first connecting channel 132 and the second connecting channel 142 both extend radially along the stationary volute 10, which not only facilitates clamping during processing but also improves processing efficiency.

[0058] Specifically, such as Figure 6 As shown, in another embodiment, the first connecting channel 132 or the second connecting channel 142 can also be set at an angle to the radial direction of the stationary vortex 10, thereby ensuring that the arrangement space of the components is reasonable, and thus ensuring the normal performance of the vortex assembly.

[0059] Further, please refer to Figure 2 The arc-shaped flow channel 12, the liquid inlet 13, and the liquid outlet 14 form an oil channel 15. Two sets of oil channels 15 are provided, spaced apart. Two air inlets 11 are also provided on the stationary vortex disk 10, with each air inlet 11 corresponding to one set of oil channels 15. Specifically, in this embodiment, two sets of oil channels 15 are provided, and two air inlets 11 are also provided on the stationary vortex disk 10, with each air inlet 11 corresponding to one set of oil channels 15. In practical applications, having two air inlets 11 ensures the air intake efficiency of the vortex disk assembly, while having two sets of oil channels 15 ensures the circulation volume of the medium when the vortex disk assembly has good air intake efficiency, thereby ensuring the normal performance of the vortex disk assembly.

[0060] Specifically, in this embodiment, the two sets of oil channels 15 are symmetrically arranged about the vertical plane containing the axis of the stationary vortex disk 10, and the two air inlets 11 are also symmetrically arranged about the vertical plane. In another embodiment, the two sets of oil channels 15 and the two air inlets 11 may also be asymmetrically arranged, which will not be elaborated here.

[0061] like Figure 8 and Figure 9 As shown, this embodiment also provides a compressor, which includes a housing 1 and a drive unit 2. The housing 1 has an oil sump 103. The compressor also includes a scroll assembly as described above. The scroll assembly is disposed inside the housing 1. The drive unit 2 is rotatably disposed inside the housing 1. The stationary scroll 10, the intermediate body 40 and the seal 30 are fixedly disposed. The drive unit 2 is connected to the moving scroll 20 for driving the moving scroll 20 to rotate. The liquid inlet 13 is connected to the oil sump 103.

[0062] Specifically, in this embodiment, the compressor includes a first housing 1011 and a second housing 1021, which are sealed together to form a receiving cavity. A stationary scroll 10, an intermediate body 40, and a sealing element 30 are fixedly disposed within the receiving cavity. The driving element 2 is a motor, which is fixedly disposed within the receiving cavity. The two ends of the motor's output shaft 201 are rotatably mounted via bearings, and one end of the output shaft 201 is drive-connected to the moving scroll 20, enabling it to rotate and compress the gas in the compression chamber 21. The first housing 1011 has an intake port 1011, and the second housing 1021 has an exhaust port 1021. The body 1011 has a first oil sump section, and the second housing 1021 has a second oil sump section. The first oil sump section and the second oil sump section are correspondingly arranged to form an oil sump 103 for containing the compressor medium. The liquid inlet section 13 is connected to the oil sump 103. When the compressor draws in air, the gas enters the receiving cavity through the suction port 1011, and then enters the compression cavity 21 through the air inlet 11. At the same time, the medium in the oil sump 103 enters the compression cavity 21 in sequence through the liquid inlet section 13, the arc-shaped flow channel 12 and the liquid outlet section 14 to complete the effective circulation of the medium. Due to the presence of the arc-shaped flow channel 12, the amount of medium entering the receiving cavity is relatively small, which can effectively avoid liquid slugging and ensure the service life of the compressor.

[0063] Example 2

[0064] like Figures 10 to 16 As shown, this embodiment provides a scroll assembly, which differs from the scroll assembly in Embodiment 1 in the specific configuration of the arc-shaped flow channel 12.

[0065] In this embodiment, please refer to Figure 13 and Figure 14 An arc-shaped groove 121 is formed on the intermediate body 40, extending circumferentially. The arc-shaped groove 121 and the end face of the stationary volute 10 near the intermediate body 40 are sealed together by a sealing element 30 to form an arc-shaped flow channel 12. Specifically, the intermediate body 40 has an arc-shaped groove 121 circumferentially, and a sealing element 30 is provided between the intermediate body 40 and the stationary volute 10. The sealing element 30 can ensure good sealing performance between the arc-shaped groove 121 and the end face of the stationary volute 10 near the intermediate body 40, avoiding leakage of the medium. Moreover, this structure is relatively easy to process, effectively reducing processing costs.

[0066] Specifically, the liquid inlet 13 in this embodiment also includes a liquid inlet 131 and a first connecting channel 132. The liquid inlet 131 is opened on the outer side wall of the intermediate body 40, and the first connecting channel 132 is opened on the intermediate body 40 to connect the liquid inlet 131 and the arc-shaped flow channel 12 to ensure its functionality.

[0067] For details, please refer to Figure 15 and Figure 16 In this embodiment, the liquid outlet 14 is disposed on the stationary vortex disk 10. The liquid outlet 14 includes a liquid outlet 141 and a second connecting channel 142. The liquid outlet 141 is opened on the inner side wall of the stationary vortex disk 10, and the second connecting channel 142 is opened on the stationary vortex disk 10. The second connecting channel 142 is used to connect the liquid outlet 141 and the arc-shaped flow channel 12 to ensure the normal flow of the medium.

[0068] Specifically, in this embodiment, the center of the intermediate body 40 is provided with a bearing hole and a shaft seal hole, which are used to install the bearing and the shaft seal respectively. After the shaft seal is assembled with the crankshaft, it plays a sealing role to prevent leakage of the medium.

[0069] Specifically, when the scroll assembly in this embodiment is working, the gas pressure in the compression chamber 21 is low. The gas enters the compression chamber 21 through the air inlet 11 of the stationary scroll 10. At the same time, the medium in the inner cavity of the compressor housing enters the compression chamber 21 sequentially along the liquid inlet 13 on the intermediate body 10, the arc-shaped flow channel 12, and the liquid outlet 14 on the stationary scroll 10 to ensure normal circulation of the medium. Meanwhile, due to the presence of the arc-shaped flow channel 12, most of the medium is stored in the arc-shaped flow channel 12 and the inner cavity of the housing, and only a small portion of the medium enters the compression chamber 21 through the oil channel 15, thereby effectively avoiding liquid slugging and ensuring the functionality and service life of the scroll assembly.

[0070] This embodiment also provides a compressor, which includes a housing 1 and a drive unit 2. The housing 1 has an oil sump 103. The compressor also includes a scroll assembly as described above, which is disposed inside the housing 1. The drive unit 2 is rotatably disposed inside the housing 1. The stationary scroll 10, the intermediate body 40, and the seal 30 are fixedly disposed. The drive unit 2 is drively connected to the moving scroll 20 to drive the moving scroll 20 to rotate. The liquid inlet 13 communicates with the oil sump 103. This compressor can ensure the circulation of its medium during operation and prevent a large amount of medium from entering the compression chamber 21 of the moving and stationary scrolls 10, thus avoiding liquid slugging and extending the service life of the compressor.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A scroll disk assembly, characterized in that, The scroll assembly includes a stationary scroll (10), a moving scroll (20), a seal (30), and an intermediate body (40). The stationary scroll (10) and the intermediate body (40) are fixedly disposed, and the moving scroll (20) is rotatably disposed on the intermediate body (40). The stationary scroll (10) and the moving scroll (20) cooperate to form a compression chamber (21). An air inlet (11) is provided on the stationary scroll (10), and the air inlet (11) communicates with the compression chamber (21). An arc-shaped flow channel (12) is provided between the stationary scroll (10) and the intermediate body (40). (12) Extending along the circumference of the stationary vortex disk (10), the sealing element (30) is disposed between the stationary vortex disk (10) and the intermediate body (40) for sealing the arc-shaped flow channel (12). The two ends of the arc-shaped flow channel (12) are respectively provided with a liquid inlet (13) and a liquid outlet (14). Along the circumference of the stationary vortex disk (10), the liquid outlet (14) is located between the liquid inlet (13) and the air inlet (11), and the liquid outlet (14) communicates with the compression chamber (21). The liquid inlet (13) is used to draw in the medium inside the compressor housing (1).

2. The scroll assembly according to claim 1, characterized in that, An arc-shaped groove (121) is provided on the stationary vortex disk (10). The arc-shaped groove (121) extends along the circumference of the stationary vortex disk (10). The arc-shaped groove (121) and the intermediate body (40) are sealed near the end face of the stationary vortex disk (10) by the sealing element (30) to form the arc-shaped flow channel (12).

3. The scroll assembly according to claim 2, characterized in that, The sealing element (30) includes a body (31) and a protrusion (32). The protrusion (32) protrudes from the body (31) and is configured to cooperate with the arcuate groove (121). The protrusion (32) is located on the side of the body (31) away from the intermediate body (40).

4. The scroll assembly according to claim 1, characterized in that, The liquid inlet (13) includes a liquid inlet (131) and a first connecting channel (132). The liquid inlet (131) is located on the outer side wall of the static vortex disk (10), and the first connecting channel (132) is used to connect the liquid inlet (131) and one end of the arc-shaped flow channel (12).

5. The scroll assembly according to claim 4, characterized in that, The liquid outlet (14) includes a liquid outlet (141) and a second connecting channel (142). The liquid outlet (141) is located on the inner side wall of the static vortex disk (10). The second connecting channel (142) is used to connect the liquid outlet (141) and the other end of the arc-shaped flow channel (12).

6. The scroll assembly according to claim 5, characterized in that, The cross-sectional dimensions of the liquid outlet (141) are smaller than those of the air inlet (11).

7. The scroll assembly according to claim 6, characterized in that, The first connecting channel (132) and / or the second connecting channel (142) both extend radially along the stationary vortex disk (10).

8. The scroll assembly according to claim 1, characterized in that, An arc-shaped groove (121) is provided on the intermediate body (40). The arc-shaped groove (121) extends circumferentially along the intermediate body (40). The arc-shaped groove (121) and the static vortex disk (10) near the end face of the intermediate body (40) are sealed by the sealing element (30) to form the arc-shaped flow channel (12).

9. The scroll assembly according to any one of claims 1-7, characterized in that, The arc-shaped flow channel (12), the liquid inlet (13) and the liquid outlet (14) form an oil channel (15). There are two sets of oil channels (15), which are spaced apart. There are also two air inlets (11) on the stationary vortex plate (10). The two air inlets (11) and the two sets of oil channels (15) are arranged in a one-to-one correspondence.

10. A compressor, the compressor comprising a housing (1) and a drive unit (2), the housing (1) having an oil sump (103), characterized in that, The compressor further includes a scroll assembly as described in any one of claims 1-9, the scroll assembly being disposed inside the housing (1), the drive member (2) being rotatably disposed inside the housing (1), the stationary scroll (10), the intermediate body (40) and the seal (30) being fixedly disposed, the drive member (2) being pulsatorically connected to the moving scroll (20) for driving the moving scroll (20) to rotate, and the liquid inlet (13) being connected to the oil sump (103).

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