Scroll assembly and compressor

Abstract

The invention belongs to the technical field of compressors, and discloses a scroll assembly and a compressor. The vortex plate assembly comprises a static vortex plate, a dynamic vortex plate, a sealing piece and a middle body, the dynamic vortex plate is rotationally arranged in the middle body, the static vortex plate and the dynamic vortex plate are arranged in a matched mode to form a compression cavity, an arc-shaped runner is arranged between the static vortex plate and the middle body, and a liquid inlet part and a liquid outlet part are arranged at the two ends of the arc-shaped runner respectively. The liquid outlet part is located between the liquid inlet part and the air inlet, the liquid outlet part communicates with the compression cavity, and the liquid inlet part is used for sucking a medium. During working, the air pressure in the compression cavity is low, air enters the air inlet, and a medium in the inner cavity of the compressor shell enters the compression cavity along the liquid inlet part, the arc-shaped flow channel and the liquid outlet part in sequence, so that normal circulation of the medium is ensured, meanwhile, due to the existence of the arc-shaped flow channel, most of the medium is stored in the arc-shaped flow channel and the inner cavity of the shell; only a small part of the medium enters the compression cavity, so that the liquid impact phenomenon is effectively avoided, and the use function and the service life of the vortex plate assembly are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a scroll assembly and a compressor. Background Art

[0002] A scroll compressor is a type of positive displacement compressor. The compression component consists of a movable scroll and a stationary scroll. The relative revolution of the movable and stationary scrolls forms a continuous change in the closed volume to achieve the purpose of compressing the gas. The gas is sucked into the compression space formed by the movable and stationary scrolls. As the movable scroll moves, a high-pressure area is formed on the stationary scroll. Since there are more liquid substances in the scroll compressor, such as cooling oil, lubricating oil, etc., as well as possible liquid refrigerant, these liquid substances will enter the high-pressure area of ​​the stationary scroll. Since liquid substances cannot be compressed, they will become high-speed droplets under the action of high pressure, thereby damaging or piercing the stationary scroll. This is called liquid hammer.

[0003] In the prior art, an oil circulation straight hole is usually set at the lower part of the static scroll. The straight hole directly connects the compression chamber of the dynamic and static scroll with the refrigerant oil deposited in the inner cavity of the compressor housing. When the compressor is working, the refrigerant oil deposited in the inner cavity of the compression housing is sucked into the compression chamber of the dynamic and static scroll, thereby maintaining the circulation of the refrigerant oil and playing the role of lubricating the moving parts of the compressor. However, with the diversification of the use scenarios of new energy vehicle air conditioners, especially the increasingly sophisticated and complex thermal management systems of new energy vehicles, air conditioning compressors often inhale a large amount of liquid refrigerant and deposit it in the oil pool in the inner cavity of the compressor housing, or in order to meet the lubrication of mechanical parts, a large amount of refrigerant oil is artificially injected into the oil pool in the inner cavity of the compressor housing. At the same time, due to the existence of the straight hole, the height of the internal liquid level of the compression chamber of the dynamic and static scroll is always consistent with the liquid level of the oil pool in the inner cavity of the compressor housing. This results in that when there is more liquid circulating in the air-conditioning system, the liquid level of the compression chamber of the dynamic and static scroll is also higher, and even completely submerges the compression chamber of the dynamic and static scroll, causing liquid hammer, and ultimately causing damage to the compressor scroll or even failure of the compressor.

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

[0005] The object of the present invention is to provide a scroll assembly and a compressor, which can ensure that the liquid level in the suction chamber of the movable and stationary scrolls is always at a low level, avoid liquid hammer, and thus ensure the normal function of the compressor.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A scroll assembly, the scroll assembly includes a fixed scroll, a movable scroll, a sealing member and an intermediate body, the fixed scroll and the intermediate body are fixedly arranged, the movable scroll is rotatably arranged on the intermediate body, and the fixed scroll and the movable scroll are cooperated to form a compression chamber, the fixed scroll is provided with an air inlet, the air inlet is connected with the compression chamber, an arc-shaped flow channel is provided between the fixed scroll and the intermediate body, the arc-shaped flow channel extends along the circumference of the fixed scroll, the sealing member is provided between the fixed scroll and the intermediate body, and is used to seal the arc-shaped flow channel, a liquid inlet portion and a liquid outlet portion are respectively provided at both ends of the arc-shaped flow channel, along the circumference of the fixed scroll, the liquid outlet portion is located between the liquid inlet portion and the air inlet, and the liquid outlet portion is connected with the compression chamber, and the liquid inlet portion is used to suck the medium into the inner cavity of the compressor casing.

[0008] As an optional technical solution, an arcuate groove is provided on the static scroll, and the arcuate groove extends along the circumference of the static scroll. The arcuate groove and the end surface of the intermediate body close to the static scroll are sealed by the seal to form the arcuate flow channel.

[0009] As an optional technical solution, the seal includes a body and a raised portion, wherein the raised portion is protruded from the body, the raised portion is matched with the arc-shaped groove, and the raised portion is located on a side of the body away from the intermediate body.

[0010] As an optional technical solution, the liquid inlet portion includes a liquid inlet and a first connecting channel, the liquid inlet is opened on the outer wall of the static vortex, 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 portion includes a liquid outlet and a second connecting channel, the liquid outlet is opened on the inner wall of the static vortex, and the second connecting channel is used to connect the liquid outlet and the other end of the arc flow channel.

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

[0013] As an optional technical solution, the first connecting channel and / or the second connecting channel both extend along the radial direction of the static scroll.

[0014] As an optional technical solution, an arcuate groove is provided on the intermediate body, and the arcuate groove extends along the circumference of the intermediate body. The arcuate groove and the end surface of the static vortex disk close to the intermediate body are sealed by the sealing member to form the arcuate flow channel.

[0015] As an optional technical solution, the arc-shaped flow channel, the liquid inlet portion and the liquid outlet portion form an oil channel, and the oil channel is provided in two groups, and the two groups of oil channels are arranged at intervals. There are also two air inlets on the static vortex disk, and the two air inlets and the two groups of oil channels are arranged in a one-to-one correspondence.

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

[0017] A compressor, the compressor comprising a housing and a driving member, the housing having an oil pool, the compressor also comprising a scroll assembly as described above, the scroll assembly being arranged inside the housing, the driving member being rotatably arranged inside the housing, the fixed scroll, the intermediate body and the sealing member being fixedly arranged, the driving member being transmission-connected to the movable scroll for driving the movable scroll to rotate, and the liquid inlet being communicated with the oil pool.

[0018] Beneficial effects of the present invention:

[0019] The present invention discloses a scroll assembly, which comprises a fixed scroll, a movable scroll, a sealing member and an intermediate body. The fixed scroll and the intermediate body are fixedly arranged, the movable scroll is rotatably arranged on the intermediate body, and the fixed scroll and the movable scroll are cooperatively arranged to form a compression chamber. An air inlet is arranged on the fixed scroll, and the air inlet is communicated with the compression chamber. An arc-shaped flow channel is arranged between the fixed scroll and the intermediate body, and the arc-shaped flow channel extends along the circumference of the fixed scroll. The sealing member is arranged between the fixed scroll and the intermediate body, and is used to seal the arc-shaped flow channel. A liquid inlet part and a liquid outlet part are respectively arranged at two ends of the arc-shaped flow channel. Along the circumference of the fixed scroll, the liquid outlet part is located between the liquid inlet part and the air inlet, and the liquid outlet part is communicated with the compression chamber. The liquid inlet part is used to suck the medium in the inner cavity of the compressor housing. The scroll assembly is provided with an arc-shaped flow channel. One end of the arc-shaped flow channel is connected to the compression chamber through a liquid outlet, and the other end is connected to the inner cavity of the compressor shell through a liquid inlet. Along the circumference of the static scroll, the liquid outlet is located between the liquid inlet and the air inlet. When at rest, the liquid level of the liquid in the arc-shaped flow channel is always consistent with the liquid level of the inner cavity of the compressor shell. When the compressor is working, the air pressure in the compression chamber is low, and air is taken in through the air inlet. The medium in the inner cavity of the compressor shell will enter the compression chamber along the liquid inlet, the arc-shaped flow channel and the liquid outlet in turn to ensure the 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 shell, and only a small part of the medium will enter the compression chamber, thereby effectively avoiding liquid hammer, thereby ensuring the function and service life of the scroll assembly.

[0020] The present invention also discloses a compressor, which includes a housing and a driving member, and the housing has an oil pool. The compressor also includes the above-mentioned scroll assembly, the scroll assembly is arranged inside the housing, the driving member is rotatably arranged inside the housing, the fixed scroll, the intermediate body and the sealing member are fixedly arranged, the driving member is transmission-connected with the movable scroll, and is used to drive the movable scroll to rotate, and the liquid inlet is connected with the oil pool. This compressor can ensure the circulation of its medium during operation, and can prevent a large amount of medium from entering the compression chamber of the movable and fixed scrolls, avoid liquid hammer, and thus improve the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an axial cross-sectional view of a scroll assembly according to Embodiment 1 of the present invention;

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

[0023] Figure 3 is a partial structural exploded view of a scroll assembly according to Embodiment 1 of the present invention;

[0024] Figure 4 is a schematic structural diagram of a stationary scroll according to an embodiment of the present invention;

[0025] Figure 5 is a schematic structural diagram of a sealing member according to an embodiment of the present invention;

[0026] Figure 6 2 is a schematic structural diagram of a static scroll according to an embodiment of the present invention, in which the second connecting channel is arranged at an angle to the radial direction;

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

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

[0029] Fig. 9 is a radial cross-sectional view of a compressor according to an embodiment of the present invention;

[0030] Fig.10 is an axial cross-sectional view of a scroll assembly according to Embodiment 2 of the present invention;

[0031] Fig.11 is a radial cross-sectional view of a scroll assembly according to Embodiment 2 of the present invention;

[0032] Fig.12 is a partial structural exploded view of a scroll assembly according to Embodiment 2 of the present invention;

[0033] Fig.13 is a schematic structural diagram of an intermediate of Example 2 of the present invention;

[0034] Fig.14 yes Fig.13 Cross-sectional view of the middle BB;

[0035] Fig.15 is a schematic structural diagram of a static scroll according to Embodiment 2 of the present invention;

[0036] Fig.16 yes Fig.15 Cross-sectional view of CC.

[0037] In the figure:

[0038] 1. Shell; 101. First shell; 1011. Air inlet; 102. Second shell; 1021. Air outlet; 103. Oil pool; 2. Driving member; 201. Output shaft;

[0039] 10. static scroll; 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. sealing member; 31. body; 32. raised portion;

[0042] 40. Intermediate. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0047] like Figures 1 to 7 As shown, in this embodiment, a scroll assembly is provided, which includes a scroll assembly including a fixed scroll 10, a movable scroll 20, a seal 30 and an intermediate body 40, the fixed scroll 10 and the intermediate body 40 are fixedly arranged, the movable scroll 20 is rotatably arranged on the intermediate body 40, and the fixed scroll 10 and the movable scroll 20 are arranged to form a compression chamber 21, the fixed scroll 10 is provided with an air inlet 11, the air inlet 11 is connected to the compression chamber 21, and a sealing member 30 is provided between the fixed scroll 10 and the intermediate body 40. There is an arc flow channel 12, which extends along the circumference of the fixed scroll 10. The seal 30 is arranged between the fixed scroll 10 and the intermediate body 40, and is used to seal the arc flow channel 12. The two ends of the arc flow channel 12 are respectively provided with a liquid inlet 13 and a liquid outlet 14. Along the circumference of the fixed scroll 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 suck the medium into the inner cavity of the compressor casing.

[0048] Specifically, in this embodiment, the fixed scroll 10 and the intermediate body 40 are fixedly arranged, the movable scroll 20 is rotatably arranged on the side of the intermediate body 40 close to the fixed scroll 10, and the fixed scroll 10 and the movable scroll 20 are cooperatively arranged to form a compression chamber 21. When the movable scroll 20 rotates, the compression chamber 21 is used to compress the gas. The fixed scroll 10 is provided with an air inlet 11 connected to the compression chamber 21, and the gas enters the compression chamber 21 through the air inlet 11; a circumferential direction of the fixed scroll 10 is provided between the fixed scroll 10 and the intermediate body 40. An extended arc flow channel 12 is provided with a liquid inlet 13 and a liquid outlet 14 at both ends of the arc flow channel 12, and the liquid outlet 14 is located between the air inlet 11 and the liquid inlet 13, wherein the liquid inlet 13 is used to suck the medium into the inner cavity of the compressor housing, and the liquid outlet 14 is connected to the compression chamber 21. The liquid level in the arc flow channel 12 is always consistent with the liquid level height in the inner cavity of the compressor housing, and the seal 30 is provided between the intermediate body 40 and the static scroll 10 to ensure the sealing performance of the arc flow channel 12 and avoid leakage of the medium. In actual use, when the compressor is working, the air pressure in the compression chamber 21 is low, and the gas enters the compression chamber 21 through the air inlet 11. At the same time, the medium in the inner cavity of the compressor shell will enter the compression chamber 21 along the liquid inlet 13, the arc flow channel 12 and the liquid outlet 14 in sequence to ensure the normal circulation of the medium. At the same time, due to the existence of the arc flow channel 12, most of the medium will be stored in the arc flow channel 12 and the inner cavity of the shell, and only a small part of the medium enters the compression chamber 21, thereby effectively avoiding the occurrence of liquid hammer, thereby ensuring the use function 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, if Figures 2 to 4 As shown, an arc groove 121 is provided on the static scroll 10, and the arc groove 121 extends along the circumference of the static scroll 10. The arc groove 121 and the end surface of the intermediate body 40 close to the static scroll 10 are sealed by the seal 30 to form an arc flow channel 12. Specifically, in this embodiment, an arc groove 121 is provided along the circumference of the static scroll 10, and a seal 30 is provided between the static scroll 10 and the intermediate body 40. The seal 30 can ensure that the arc groove 121 and the end surface of the intermediate body 40 close to the static scroll 10 have good sealing performance to avoid leakage of the medium. This structure is relatively convenient to process and effectively reduces the processing cost.

[0051] Furthermore, if Figure 5As shown, the seal 30 includes a body 31 and a protrusion 32, the protrusion 32 is protruding from the body 31, the protrusion 32 is arranged in cooperation with the arc groove 121, and 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 is protruding from the body 31, and the body 31 can ensure that the seal 30 itself has a good shape, avoids deformation during installation, and ensures the installation stability of the seal 30, and the protrusion 32 and the arc groove 121 are arranged in cooperation. After the installation of the seal 30, the intermediate body 40 and the static scroll 10 is 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 notch side of the arc groove 121, thereby further ensuring good sealing performance and avoiding leakage of the medium.

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

[0053] Furthermore, in this embodiment, if 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 wall of the fixed scroll 10 . The second connecting channel 142 is used to connect the liquid outlet 141 with the other end of the arc-shaped flow channel 12 .

[0054] Specifically, in the present 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 the processing efficiency but also reduces the processing cost.

[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 are not limited here.

[0056] Furthermore, the cross-sectional size of the liquid outlet 141 is smaller than the cross-sectional size of the air inlet 11. Specifically, in the present embodiment, this arrangement can make the air intake larger, thereby making the medium entering the compression chamber 21 through the arc-shaped flow channel 12 less during air intake, thereby ensuring the normal circulation of the medium and preventing a large amount of medium from entering the compression chamber 21 and causing liquid hammer.

[0057] Furthermore, if Figure 4As shown, the first connecting channel 132 and / or the second connecting channel 142 both extend along the radial direction of the fixed scroll 10. Specifically, in this embodiment, the first connecting channel 132 and the second connecting channel 142 both extend along the radial direction of the fixed scroll 10, which is not only convenient for clamping during processing, but also can improve processing efficiency.

[0058] Specifically, 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 fixed scroll 10, thereby ensuring a reasonable layout space for components and thus ensuring normal performance of the scroll assembly.

[0059] For further information, 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, and there are two groups of oil channels 15, and the two groups of oil channels 15 are arranged at intervals. There are also two air inlets 11 on the fixed scroll 10, and the two air inlets 11 and the two groups of oil channels 15 are arranged in a one-to-one correspondence. Specifically, in the present embodiment, there are two groups of oil channels 15 formed by the arc-shaped flow channel 12, the liquid inlet 13 and the liquid outlet 14, and there are also two air inlets 11 on the fixed scroll 10, and the two air inlets 11 and the two groups of oil channels 15 are arranged in a one-to-one correspondence. In actual applications, the provision of two air inlets 11 can ensure the air intake efficiency of the scroll assembly, and the provision of two groups of oil channels 15 can ensure the circulation volume of the medium when the scroll assembly has a good air intake efficiency, thereby ensuring the normal performance of the scroll assembly.

[0060] Specifically, in this embodiment, the two groups of oil channels 15 are symmetrically arranged about the vertical plane where the axis of the static scroll 10 is located, and the two air inlets 11 are also symmetrically arranged about the vertical plane. In another embodiment, the two groups 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 Fig. 9 As shown, a compressor is also provided in this embodiment, which includes a shell 1 and a driving member 2, the shell 1 has an oil pool 103, and the compressor also includes the scroll assembly as described above, the scroll assembly is arranged inside the shell 1, the driving member 2 is rotatably arranged inside the shell 1, the fixed scroll 10, the intermediate body 40 and the sealing member 30 are fixedly arranged, the driving member 2 is transmission-connected to the movable scroll 20, and is used to drive the movable scroll 20 to rotate, and the liquid inlet 13 is connected to the oil pool 103.

[0062] Specifically, in this embodiment, the compressor includes a first shell 1011 and a second shell 1021, the first shell 1011 and the second shell 1021 are sealed and connected to form an accommodating chamber, and the fixed scroll 10, the intermediate body 40 and the sealing member 30 are fixedly arranged in the accommodating chamber; the driving member 2 is a motor, and the motor is fixedly arranged in the accommodating chamber, and the two ends of the output shaft 201 of the motor are rotatably arranged through bearings, and one end of the output shaft 201 is transmission-connected with the movable scroll 20, which can drive the movable scroll 20 to rotate to compress the gas in the compression chamber 21; the first shell 1011 is provided with an air intake port 1011, the second shell 1021 is provided with an air exhaust port 1021, and the first shell The body 1011 has a first oil pool portion, and the second shell 1021 has a second oil pool portion. The first oil pool portion and the second oil pool portion are correspondingly arranged to form an oil pool 103 for accommodating the compressor medium; the liquid inlet portion 13 is connected to the oil pool 103. When the compressor inhales, the gas enters the accommodating chamber through the suction port 1011, and then enters the compression chamber 21 through the air inlet 11. At the same time, the medium in the oil pool 103 passes through the liquid inlet portion 13, the arc flow channel 12 and the liquid outlet portion 14 in turn and enters the compression chamber 21 to complete the effective circulation of the medium. Due to the existence of the arc flow channel 12, the amount of medium entering the accommodating chamber is relatively small, which can effectively avoid liquid hammer and ensure the service life of the compressor.

[0063] Example 2

[0064] like Figures 10 to 16 As shown, a scroll assembly is provided in this embodiment. The difference between this scroll assembly and the scroll assembly in Embodiment 1 lies in the different specific arrangement of the arc-shaped flow channel 12 .

[0065] In this embodiment, please refer to Fig.13 and Fig.14 , an arc groove 121 is provided on the intermediate body 40, and the arc groove 121 extends along the circumference of the intermediate body 40. The arc groove 121 and the end surface of the static scroll 10 close to the intermediate body 40 are sealed and connected by the seal 30 to form an arc flow channel 12. Specifically, the intermediate body 40 is provided with an arc groove 121 along the circumference, and a seal 30 is provided between the intermediate body 40 and the static scroll 10. The seal 30 can ensure that the arc groove 121 and the end surface of the static scroll 10 close to the intermediate body 40 have good sealing performance to avoid leakage of the medium, and this structure is relatively convenient to process, which effectively reduces the processing cost.

[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 wall of the intermediate body 40, and the first connecting channel 132 is opened on the intermediate body 40, which is used to connect the liquid inlet 131 and the arc-shaped flow channel 12 to ensure its use function.

[0067] Specifically, please refer to Fig.15 and Fig.16 The liquid outlet 14 in this embodiment is arranged on the static scroll 10, and the liquid outlet 14 includes a liquid outlet 141 and a second connecting channel 142. The liquid outlet 141 is opened on the inner wall of the static scroll 10, and the second connecting channel 142 is opened on the static scroll 10. The second connecting channel 142 is used to connect the liquid outlet 141 and the arc flow channel 12 to ensure the normal flow of the medium.

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

[0069] Specifically, when the scroll assembly in this embodiment is working, the air pressure in the compression chamber 21 is low, and the gas enters the compression chamber 21 through the air inlet 11 of the static scroll 10. At the same time, the medium in the inner cavity of the compressor casing will enter the compression chamber 21 along the liquid inlet portion 13 on the intermediate body 10, the arc flow channel 12 and the liquid outlet portion 14 on the static scroll 10 in sequence to ensure the normal circulation of the medium. At the same time, due to the existence of the arc flow channel 12, most of the medium will be stored in the arc flow channel 12 and the inner cavity of the casing, and only a small part of the medium will enter the compression chamber 21 through the oil channel 15, thereby effectively avoiding the occurrence of liquid hammer, thereby ensuring the use function and service life of the scroll assembly.

[0070] The present embodiment also provides a compressor, which includes a housing 1 and a driving member 2, wherein the housing 1 has an oil pool 103, and the compressor also includes the scroll assembly as described above, wherein the scroll assembly is arranged inside the housing 1, the driving member 2 is rotatably arranged inside the housing 1, the fixed scroll 10, the intermediate body 40 and the sealing member 30 are fixedly arranged, the driving member 2 is transmission-connected with the movable scroll 20, and is used to drive the movable scroll 20 to rotate, and the liquid inlet 13 is connected with the oil pool 103. This compressor can ensure the circulation of its medium during operation, and can also prevent a large amount of medium from entering the compression chamber 21 of the movable and fixed scrolls 10, thereby avoiding the occurrence of liquid hammer, and thus prolonging 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 embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A scroll assembly, characterized in that: The scroll assembly comprises a fixed scroll (10), a movable scroll (20), a sealing member (30) and an intermediate body (40); the fixed scroll (10) and the intermediate body (40) are fixedly arranged; the movable scroll (20) is rotatably arranged on the intermediate body (40); the fixed scroll (10) and the movable scroll (20) are cooperatively arranged to form a compression chamber (21); an air inlet (11) is arranged on the fixed scroll (10); the air inlet (11) is communicated with the compression chamber (21); an arc-shaped flow channel (12) is arranged between the fixed scroll (10) and the intermediate body (40); the arc-shaped flow channel (12) extends along the circumference of the fixed scroll (10), the sealing member (30) is arranged between the fixed scroll (10) and the intermediate body (40), and is used to seal the arc flow channel (12), and the two ends of the arc flow channel (12) are respectively provided with a liquid inlet (13) and a liquid outlet (14), along the circumference of the fixed scroll (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), and the liquid inlet (13) is used to suck the medium into the inner cavity of the compressor housing (1).

2. The scroll assembly according to claim 1, characterized in that: The static scroll (10) is provided with an arc-shaped groove (121), and the arc-shaped groove (121) extends along the circumference of the static scroll (10). The arc-shaped groove (121) and the end surface of the intermediate body (40) close to the static scroll (10) are sealed by the sealing member (30) to form the arc-shaped flow channel (12).

3. The scroll assembly according to claim 2, characterized in that: The sealing member (30) comprises a main body (31) and a raised portion (32), wherein the raised portion (32) is protruding from the main body (31), the raised portion (32) is arranged in cooperation with the arc-shaped groove (121), and the raised portion (32) is located on a side of the main body (31) away from the intermediate body (40).

4. The scroll assembly according to claim 1, characterized in that: The liquid inlet portion (13) comprises a liquid inlet (131) and a first connecting channel (132), wherein the liquid inlet (131) is provided on the outer wall of the stationary scroll (10), and the first connecting channel (132) is used to connect the liquid inlet (131) with one end of the arc-shaped flow channel (12).

5. The scroll assembly according to claim 4, characterized in that: The liquid outlet portion (14) comprises a liquid outlet (141) and a second connecting channel (142), wherein the liquid outlet (141) is provided on the inner wall of the stationary scroll (10), and the second connecting channel (142) is used to connect the liquid outlet (141) with the other end of the arc-shaped flow channel (12).

6. The scroll assembly according to claim 5, characterized in that: The cross-sectional dimension of the liquid outlet (141) is smaller than the cross-sectional dimension 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 along the radial direction of the fixed scroll (10).

8. The scroll assembly according to claim 1, characterized in that: An arcuate groove (121) is provided on the intermediate body (40), and the arcuate groove (121) extends along the circumference of the intermediate body (40). The arcuate groove (121) and the end surface of the static scroll (10) close to the intermediate body (40) are sealed by the sealing member (30) to form the arcuate flow channel (12).

9. The scroll assembly according to any one of claims 1 to 7, characterized in that: The arc-shaped flow channel (12), the liquid inlet portion (13) and the liquid outlet portion (14) form an oil channel (15). The oil channel (15) is provided in two groups, and the two groups of the oil channels (15) are arranged at intervals. The fixed scroll (10) is also provided with two air inlets (11), and the two air inlets (11) and the two groups of the oil channels (15) are arranged in a one-to-one correspondence.

10. A compressor, comprising a housing (1) and a drive member (2), wherein the housing (1) has an oil pool (103), characterized in that: The compressor further comprises a scroll assembly as described in any one of claims 1 to 9, wherein the scroll assembly is arranged inside the housing (1), the driving member (2) is rotatably arranged inside the housing (1), the fixed scroll (10), the intermediate body (40) and the sealing member (30) are fixedly arranged, the driving member (2) is transmission-connected to the movable scroll (20) for driving the movable scroll (20) to rotate, and the liquid inlet portion (13) is connected to the oil pool (103).

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