Compressor

Abstract

The utility model belongs to the technical field of compressors, and discloses a compressor, an upper scroll suction port and a lower scroll suction port are arranged on a static scroll plate, and the lower scroll suction port is positioned between a compression suction port and the upper scroll suction port along the axial direction of the static scroll plate; the upper vortex air suction port and the lower vortex air suction port are both communicated with the low-pressure cavity, so that air introduced into the low-pressure cavity through the compression air suction port can enter the compression cavity through the upper vortex air suction port and the lower vortex air suction port. In the working process of the compressor, the lower vortex air suction port and the upper vortex air suction port are adopted to provide air for the compression cavity at the same time, the air suction amount of the compression assembly is increased, and the purpose of increasing the volume efficiency of the compressor is achieved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor. Background Technology

[0002] The compressor includes a stationary scroll and a moving scroll. The stationary and moving scrolls mesh to form a low-pressure zone and a high-pressure zone. The stationary scroll has an intake port that communicates with the low-pressure zone. The compressor also includes a thrust plate and a main bearing housing. The thrust plate is used to withstand the axial force generated by the moving scroll during rotation to ensure the stable operation of the moving scroll. The main bearing housing supports the stationary and moving scrolls, and the intake port is generally located at the end of the stationary scroll closest to the main bearing housing.

[0003] The placement of the thrust plate and main bearing housing limits the area available for opening the intake port on the end of the stationary scroll near the main bearing housing, resulting in lower volumetric efficiency of the compressor. Utility Model Content

[0004] The purpose of this invention is to provide a compressor that can improve the volumetric efficiency of the compressor.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A compressor includes a housing and a muffler cover. The muffler cover divides the inner cavity of the housing into a low-pressure chamber and a high-pressure chamber. A compression assembly is provided in the low-pressure chamber. The low-pressure chamber has a compression intake port provided on the housing. The compression assembly includes a stationary scroll plate and a moving scroll plate that mesh to form the compression chamber.

[0007] The compression chamber has a lower vortex intake port and an upper vortex intake port, both of which are opened on the stationary vortex disk. Along the axial direction of the stationary vortex disk, the lower vortex intake port is located between the compression intake port and the upper vortex intake port. Both the upper vortex intake port and the lower vortex intake port are connected to the low-pressure chamber, so that the gas introduced into the low-pressure chamber through the compression intake port can enter the compression chamber through the upper vortex intake port and the lower vortex intake port.

[0008] As one possible implementation of the above-mentioned compressor, the compressor further includes a main bearing housing for supporting the stationary scroll disk, and a guide ring fixed to the main bearing housing, wherein the stationary scroll disk is buoyantly disposed in the guide ring along its own axial direction;

[0009] The low-pressure cavities on both sides of the guide ring are connected through a first flow channel. The upper vortex intake port is connected to the low-pressure cavity on one side of the guide ring, and the lower vortex intake port is connected to the low-pressure cavity on the other side of the axial direction.

[0010] As one possible implementation of the above-mentioned compressor, the first flow channel is a through hole formed on the guide ring;

[0011] Alternatively, the outer peripheral wall of the guide ring and the inner peripheral wall of the outer shell may be used to form the first flow channel;

[0012] Alternatively, the first flow channel is at least partially located outside the housing, and the first flow channel has an air inlet and an air outlet formed on the housing, the air inlet communicating with the low-pressure chamber located on the side of the guide ring away from the muffler cover, and the air outlet communicating with the low-pressure chamber located on the side of the guide ring closer to the muffler cover.

[0013] As one possible implementation of the above-mentioned compressor, a second flow channel is provided on the main bearing housing, or the outer peripheral wall of the main bearing housing and the inner peripheral wall of the outer shell are enclosed to form a second flow channel;

[0014] One end of the second flow channel is connected to the low-pressure cavity on one side of the main bearing housing, and the other end of the second flow channel is connected to the low-pressure cavity on the other side of the main bearing housing.

[0015] As one possible implementation of the above-mentioned compressor, the first flow channel is provided in multiple ways, and the multiple flow channels are arranged at circumferential intervals along the guide ring;

[0016] And / or, the second flow channel is provided in multiple ways, and the multiple second flow channels are arranged at intervals along the circumference of the main bearing housing;

[0017] And / or, the upper vortex intake port is at least partially opened on the end plate of the stationary vortex disk.

[0018] As one possible implementation of the above-mentioned compressor, the stationary scroll plate is provided with a keyway, and the compressor further includes a cross slip ring for limiting the rotation of the moving scroll plate, the cross slip ring including a slider slidably disposed in the keyway;

[0019] The upper end face of the guide ring is lower than the upper vortex air intake. The guide ring is provided with an oil guiding channel. One end of the oil guiding channel extends to the upper end face of the guide ring, and the other end extends to the lower end face of the guide ring. The opening of the keyway faces downward. An oil guiding hole is provided on the bottom wall of the keyway. The oil guiding channel, the oil guiding hole and the keyway are connected sequentially from top to bottom.

[0020] As one possible implementation of the above-mentioned compressor, the oil guide channel includes an oil collection groove and an oil passage hole. The oil collection groove is opened on the end face of the guide ring near the end of the muffler cover. One end of the oil passage hole extends through to the bottom wall of the oil collection groove, and the other end extends to the lower end face of the guide ring and communicates with the oil guide hole.

[0021] As one possible implementation of the above-mentioned compressor, the outer peripheral wall of the static scroll plate is provided with protrusions that correspond one-to-one with the keyways, and the keyways are at least partially opened on the end face of the corresponding protrusions facing away from the silencer cover.

[0022] Along the axial direction of the static vortex disk, the guide ring is at least partially located above the protrusion, the oil guide channel is opened on the guide ring located above the protrusion, and one end of the oil guide hole extends to the end face of the protrusion facing the muffler cover.

[0023] As one possible implementation of the compressor described above, the protrusions are provided in at least two and are arranged at circumferential intervals along the stationary scroll plate; the first flow channel is located between two adjacent protrusions;

[0024] And / or, the lower end face of the guide ring is provided with a sliding groove corresponding to the protrusion, the protrusion is movably placed in the sliding groove along the axial direction of the guide ring, and the lower end of the oil guide channel extends to the bottom wall of the sliding groove.

[0025] As one possible implementation of the above-mentioned compressor, the compressor further includes a main bearing housing for supporting the stationary scroll plate;

[0026] The stationary vortex disk is fixed to the main bearing housing; or one of the stationary vortex disk and the main bearing housing is connected to a guide shaft, and the guide shaft is buoyantly connected to the other of the stationary vortex disk and the main bearing housing along the axial direction of the stationary vortex disk.

[0027] The outer peripheral wall of the stationary vortex disk and the inner peripheral wall of the outer shell form a first gas flow channel, and the low-pressure cavities located on both sides of the axial direction of the stationary vortex disk are connected through the first gas flow channel; the outer peripheral wall of the main bearing housing and the inner peripheral wall of the outer shell form a second gas flow channel, and the low-pressure cavities located on both sides of the axial direction of the main bearing housing are connected through the second gas flow channel.

[0028] The beneficial effects of this invention are as follows: An upper scroll intake port and a lower scroll intake port are provided on the stationary scroll plate. Along the axial direction of the stationary scroll plate, the lower scroll intake port is located between the compression intake port and the upper scroll intake port. Both the upper and lower scroll intake ports are connected to the low-pressure chamber, allowing gas introduced into the low-pressure chamber through the compression intake port to enter the compression chamber through the upper and lower scroll intake ports. During compressor operation, both the lower and upper scroll intake ports simultaneously supply gas to the compression chamber, increasing the intake volume of the compression assembly and thus increasing the volumetric efficiency of the compressor. Attached Figure Description

[0029] Figure 1 This is a first sectional view of the compressor provided in this embodiment of the utility model;

[0030] Figure 2 This is a second sectional view of the compressor provided in this embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the static vortex disk provided in an embodiment of the present invention;

[0032] Figure 4 This is an axial schematic diagram of the stationary vortex disk provided in an embodiment of this utility model;

[0033] Figure 5 This is a schematic diagram of the main bearing housing provided in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the guide ring provided in an embodiment of this utility model.

[0035] In the picture:

[0036] 1. Outer casing; 11. Compressed air intake port;

[0037] 2. Main bearing housing; 21. Second flow channel; 22. First connecting hole;

[0038] 3. Compression assembly; 31. Stationary scroll plate; 311. Lower scroll intake port; 312. Upper scroll intake port; 313. Protrusion; 3131. Keyway; 3132. Oil guide hole; 32. Moving scroll plate; 33. Compression chamber;

[0039] 4. Guide ring; 41. First flow channel; 42. Oil guide channel; 421. Oil collection groove; 422. Oil passage hole; 43. Slide groove; 44. Second connecting hole;

[0040] 5. Cross slip ring; 51. Sliding block;

[0041] 6. Silencer cover;

[0042] 100, high-pressure chamber; 200, low-pressure chamber. 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 present 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 the entire structure.

[0044] In the description of this utility model, 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 utility model 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0047] Example 1

[0048] This utility model provides a compressor to improve its volumetric efficiency. Exemplarily, the compressor is a scroll compressor, and the following description uses a scroll compressor as an example.

[0049] like Figures 1 to 4 As shown, the compressor includes a housing 1 and a muffler cover 6. The muffler cover 6 divides the inner cavity of the housing 1 into a low-pressure chamber 200 and a high-pressure chamber 100. The low-pressure chamber 200 is provided with a compression assembly 3. The low-pressure chamber 200 has a compression intake port 11 provided on the housing 1. The compression assembly 3 includes a stationary scroll 31 and a moving scroll 32 that mesh to form a compression chamber 33.

[0050] The compression chamber 33 has a lower vortex intake port 311 and an upper vortex intake port 312, both located on the stationary vortex disk 31. The lower vortex intake port 311 is located at the end of the stationary vortex disk 31 furthest from the muffler cover 6, and the upper vortex intake port 312 is located at the end of the stationary vortex disk 31 closest to the muffler cover 6. Along the axial direction of the stationary vortex disk 31, the lower vortex intake port 311 is located between the compression intake port 11 and the upper vortex intake port 312. Both the upper vortex intake port 312 and the lower vortex intake port 311 are connected to the low-pressure chamber 200, so that the gas introduced into the compression chamber 33 through the compression intake port 11 can enter the compression chamber 33 through the upper vortex intake port 312 and the lower vortex intake port 311.

[0051] Simultaneously using the upper vortex intake port 312 and the lower vortex intake port 311 to supply gas to the compression chamber 33 can increase the intake volume of the compression assembly 3, thereby increasing the volumetric efficiency of the compressor.

[0052] As the gas flowing from the compression intake port 11 into the low-pressure chamber 200 flows down to the vortex intake port 311, lubricating oil is mixed in. Part of this lubricating oil-mixed gas enters the compression chamber 33 through the lower vortex intake port 311, while the remaining portion continues upwards and then enters the compression chamber 33 through the upper vortex intake port 312. Compared to the situation where all the gas in the low-pressure chamber 200 enters the compression chamber 33 through the lower vortex intake port 311, the process of the gas flowing from the low-pressure chamber 200 near the lower vortex intake port 311 to the upper vortex intake port 312 prolongs the flow path of this portion of the gas, increasing flow resistance. This causes the lubricating oil in the gas to continuously separate from the gas, resulting in a lower lubricating oil content in the gas entering the compression chamber 33 through the upper vortex intake port 312. This reduces the total amount of lubricating oil in the gas entering the compression chamber 33 through both the upper vortex intake port 312 and the lower intake port, thereby reducing the oil circulation rate.

[0053] It should be noted that during the compressor design phase, the oil circulation rate of the final product compressor can be made to meet the requirements by adjusting the ratio of the flow area of ​​the lower scroll intake port 311 to the flow area of ​​the upper scroll intake port 312.

[0054] In some embodiments, such as Figure 3 and Figure 4 As shown, multiple lower vortex intake ports 311 are provided, distributed circumferentially along the stationary vortex disk 31. Multiple upper vortex intake ports 312 are provided, spaced apart circumferentially along the stationary vortex disk 31 to meet intake requirements. It should be noted that the shapes of the lower vortex intake ports 311 and the upper vortex intake ports 312 can be arranged according to actual needs and are not specifically limited here.

[0055] In some embodiments, the upper vortex intake port 312 is at least partially formed on the end plate of the stationary vortex disk 31. Exemplarily, all of the upper vortex intake ports 312 are formed on the end plate of the stationary vortex disk 31. Alternatively, some of the upper vortex intake ports 312 may be formed on the end plate of the stationary vortex disk 31, and some of the upper vortex intake ports 312 may be formed on the vortex teeth of the stationary vortex disk 31.

[0056] In some embodiments, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the compressor also includes a main bearing housing 2 for supporting the stationary scroll 31, and a guide ring 4 fixed to the main bearing housing 2. The stationary scroll 31 is buoyantly inserted through the guide ring 4 along its own axial direction, so as to realize the floating of the stationary scroll 31. The axial movement of the stationary scroll 31 is guided by the guide ring 4.

[0057] Specifically, the main bearing housing 2 is provided with a plurality of first connecting holes 22, and the guide ring 4 is provided with a plurality of second connecting holes 44. The first connecting holes 22 and the second connecting holes 44 are connected by fasteners such as bolts to fix the guide ring 4 to the main bearing housing 2.

[0058] In some embodiments, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the gas flow channel includes a first flow channel 41. The low-pressure chambers 200 on both sides of the guide ring 4 are connected through the first flow channel 41. The upper vortex intake port 312 is connected to the low-pressure chamber 200 located on one side of the guide ring 4, and the lower vortex intake port 311 is connected to the low-pressure chamber 200 located on the other side of the guide ring 4.

[0059] The gas in the low-pressure chamber 200 located below the guide ring 4 is partially introduced into the compression chamber 33 through the lower vortex intake port 311, and partially flows into the low-pressure chamber 200 located above the guide ring 4 through the first flow channel 41, and then enters the compression chamber 33 through the upper vortex intake port 312. The gas travels a relatively long path through the first flow channel 41 and the low-pressure chamber 200 above the guide ring 4 to the upper vortex intake port 312, causing the lubricating oil in the gas to continuously separate out. This results in a lower lubricating oil content in the gas entering the compression chamber 33 through the upper vortex intake port 312, thereby reducing the total amount of lubricating oil in the gas entering the compression chamber 33 through both the upper and lower vortex intake ports 312 and 311.

[0060] In some embodiments, such as Figure 6As shown, the first flow channel 41 is a through hole formed on the guide ring 4. In order to meet the requirements of increasing the intake air volume and reducing the oil circulation rate, multiple first flow channels 41 are provided, and the multiple first flow channels 41 are arranged at intervals along the circumference of the guide ring 4. The number and shape of the first flow channels 41 can be arranged according to actual needs, and are not specifically limited here.

[0061] As an alternative, the outer peripheral wall of the guide ring 4 and the inner peripheral wall of the outer shell 1 can be combined to form the first flow channel 41. Specifically, an axially penetrating oil groove is formed on the outer peripheral wall of the guide ring 4, and the inner peripheral wall of the outer shell 1 and the inner wall of the oil groove are used to form the first flow channel 41. As another alternative, the first flow channel 41 can be at least partially located outside the outer shell 1. The first flow channel 41 has an air inlet and an air outlet formed on the outer shell 1. The air inlet communicates with the low-pressure chamber 200 located on the side of the guide ring 4 away from the muffler cover 6, and the air outlet communicates with the low-pressure chamber 200 located on the side of the guide ring 4 closer to the muffler cover 6. Specifically, the air inlet is located below the guide ring 4, the air outlet is located below the guide ring 4, and the outer shell 1 is provided with a cover. The cover is sealed to the outer shell 1, so that the cover and the outer shell 1 form the first flow channel 41.

[0062] Although there is generally a gap between the inner wall of the main bearing housing 2 and the outer casing 1, allowing gas in the low-pressure chamber 200 below the main bearing housing 2 to enter the low-pressure chamber 200 above the main bearing housing 2 through this gap, the gap is small and cannot meet the air intake requirements. Therefore, in some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the main bearing housing 2 is provided with a second flow channel 21. One end of the second flow channel 21 is connected to a low-pressure chamber 200 on one side of the main bearing housing 2, and the other end of the second flow channel 21 is connected to a low-pressure chamber 200 on the other side of the main bearing housing 2. Exemplarily, the second flow channel 21 is a through hole extending axially along the main bearing housing 2. By opening the second flow channel 21 on the main bearing housing 2, gas below the main bearing housing 2 enters the low-pressure chamber 200 above the main bearing housing 2 through the second flow channel 21. Alternatively, the second flow channel 21 can also be formed by enclosing the outer peripheral wall of the main bearing housing 2 and the inner peripheral wall of the outer shell 1. Specifically, a vertically penetrating groove is opened on the outer peripheral wall of the main bearing housing 2, and the second flow channel 21 is formed by enclosing the inner wall of the groove and the inner peripheral wall of the outer shell 1.

[0063] In some embodiments, such as Figure 5 As shown, multiple second flow channels 21 are provided, and these multiple second flow channels 21 are arranged at intervals along the circumference of the main bearing housing 2. By opening multiple second flow channels 21 on the main bearing housing 2, the gas flow requirements are met. It should be noted that the number of second flow channels 21 can be set according to the gas flow requirements, and is not specifically limited here.

[0064] In some embodiments, such as Figure 2 and Figure 3 As shown, the stationary scroll plate 31 is provided with a keyway 3131, and the compressor also includes a cross slip ring 5 for limiting the rotation of the moving scroll plate 32. The cross slip ring 5 includes a slider 51 that is slidably disposed within the keyway 3131. How the cross slip ring 5 is arranged to limit the rotation of the moving scroll plate 32 is prior art in the art and will not be described in detail here.

[0065] The upper end face of the guide ring 4 is lower than the upper vortex air intake 312. The guide ring 4 is provided with an oil guide channel 42. One end of the oil guide channel 42 extends to the upper end face of the guide ring 4, and the other end extends to the lower end face of the guide ring 4. The opening of the keyway 3131 faces downward. An oil guide hole 3132 is provided on the bottom wall of the keyway 3131. The oil guide channel 42, the oil guide hole 3132 and the keyway 3131 are connected from top to bottom.

[0066] The lubricating oil separated from the gas in the low-pressure chamber 200 above the guide ring 4 falls onto the upper surface of the guide ring 4. When the lubricating oil on the upper surface of the guide ring 4 accumulates to a certain amount, it falls into the oil guide channel 42. The lubricating oil in the oil guide channel 42 continues to flow downward to the oil guide hole 3132, and then falls into the keyway 3131. The lubricating oil falling into the keyway 3131 can lubricate the sliding fit between the slider 51 and the keyway 3131, thus achieving lubrication of the cross slip ring 5.

[0067] In some embodiments, such as Figure 2 , Figure 3 and Figure 6 As shown, the oil guide channel 42 includes an oil collection groove 421 and an oil passage hole 422. The oil collection groove 421 is opened on the end face of the guide ring 4 near the muffler cover 6. One end of the oil passage hole 422 extends through to the bottom wall of the oil collection groove 421, and the other end extends to the lower end face of the guide ring 4 and communicates with the oil guide hole 3132.

[0068] By providing an oil collecting groove 421, the lubricating oil accumulated on the upper surface of the guide ring 4 can fall into the oil collecting groove 421, thus collecting the lubricating oil accumulated on the upper surface of the guide ring 4. The lubricating oil collected in the oil collecting groove 421 is then sent to the oil guide hole 3132 through the oil passage hole 422. To facilitate the lubricating oil in the oil collecting groove 421 falling into the oil passage hole 422, the oil passage hole 422 is located at the lowest point of the bottom wall of the oil collecting groove 421.

[0069] For example, the oil collecting groove 421 is an arc-shaped groove extending circumferentially along the guide ring 4, the oil passage hole 422 is a round hole, and the oil guide hole 3132 is a round hole, which is convenient to process and has low processing cost. The opening area of ​​the oil collecting groove 421 is larger than the opening area of ​​the oil passage hole 422, which facilitates the lubricating oil deposited on the upper end surface of the guide ring 4 to fall into the oil collecting groove 421, and then enter the oil passage hole 422 from the oil collecting groove 421.

[0070] As an alternative, the oil collection tank 421 can also be a long strip of other shapes, so as to collect the lubricating oil deposited on the upper surface of the guide ring 4.

[0071] For example, the oil guide hole 3132 and the oil passage hole 422 are arranged opposite each other along the axial direction of the guide ring 4, and the lubricating oil in the oil passage hole 422 falls into the lower oil guide hole 3132.

[0072] In some embodiments, the opening of the oil collecting groove 421 is provided with a first chamfer; in other words, the upper end face of the guide ring 4 and the inner wall of the oil collecting groove 421 are connected by the first chamfer. By providing the first chamfer, a first guiding surface is formed, facilitating the entry of lubricating oil deposited on the upper end face of the guide ring 4 into the oil collecting groove 421 through the first guiding surface. Exemplarily, the first chamfer is a rounded chamfer. Alternatively, the first chamfer can also be a beveled chamfer.

[0073] In some embodiments, the oil passage hole 422 has a second chamfer at one end near the oil collection groove 421. In other words, the inner peripheral wall of the oil passage hole 422 and the bottom wall of the oil collection groove 421 are connected by the second chamfer. By providing the second chamfer, a second guide surface is formed, which facilitates the lubricating oil deposited on the bottom wall of the oil collection groove 421 to enter the oil passage hole 422 through the second guide surface. Exemplarily, the second chamfer is a rounded chamfer. As an alternative, the second chamfer can also be an angled chamfer.

[0074] In some embodiments, such as Figure 2 , Figure 3 and Figure 6 As shown, the outer peripheral wall of the stationary scroll plate 31 has protrusions 313 that correspond one-to-one with the keyways 3131. The keyways 3131 are at least partially formed on the end face of the corresponding protrusion 313 facing away from the muffler cover 6. Along the axial direction of the stationary scroll plate 31, the guide ring 4 is at least partially located above the protrusions 313. The oil guide channel 42 is formed on the guide ring 4 located above the protrusions 313, and one end of the oil guide hole 3132 extends to the end face of the protrusion 313 facing the muffler cover 6. This arrangement ensures that the oil guide channel 42, the oil guide hole 3132, and the keyway 3131 are distributed sequentially from top to bottom.

[0075] In some embodiments, such as Figure 2 , Figure 3 and Figure 6As shown, the lower end face of the guide ring 4 is provided with a groove 43 corresponding to the protrusion 313. The protrusion 313 is movably placed in the groove 43 along the axial direction of the guide ring 4. The lower end of the oil guide channel 42 extends to the bottom wall of the groove 43.

[0076] For example, the protrusion 313 and the groove 43 slide together along the axial direction of the guide ring 4 to guide the axial movement of the stationary vortex disk 31 and improve the stability of the stationary vortex disk 31 during its floating process. The lubricating oil in the oil guide channel 42 flows downward into the groove 43, which not only lubricates the sliding fit between the protrusion 313 and the groove 43, but also allows the lubricating oil in the groove 43 to fall into the keyway 3131 through the oil guide hole 3132 on the protrusion 313, thereby lubricating the sliding fit between the keyway 3131 and the slider 51.

[0077] The bottom wall of the groove 43 can press against the protrusion 313 in a downward direction, and the protrusion 313 is used to limit the axial floating of the stationary vortex disk 31.

[0078] In some embodiments, such as Figure 2 and Figure 3 As shown, at least two protrusions 313 are provided and arranged at circumferential intervals along the stationary vortex disk 31; the first flow channel 41 is located between two adjacent protrusions 313. This arrangement allows gas below the guide ring 4 to enter between two adjacent protrusions 313, and gas between two adjacent protrusions 313 to enter the low-pressure chamber 200 located above the guide ring 4 through the first flow channel 41.

[0079] Example 2

[0080] The difference between this embodiment and Embodiment 1 is that one of the stationary scroll disk and the main bearing housing is connected to a guide shaft, which is buoyantly connected to the other of the stationary scroll disk and the main bearing housing along the axial direction of the stationary scroll disk. For example, the lower end face of the stationary scroll disk is connected to the guide shaft, and a guide hole is provided on the main bearing housing. The lower end of the guide shaft slidably passes through the guide hole along its own axial direction. A gas flow channel is formed by the outer peripheral wall of the stationary scroll disk and the inner peripheral wall of the outer shell, and the low-pressure chambers located on both sides of the axial direction of the stationary scroll disk are connected through the gas flow channel.

[0081] Example 3

[0082] The difference between this embodiment and Embodiment 1 is that: the stationary vortex disk is fixed to the main bearing housing, and the outer peripheral wall of the stationary vortex disk and the inner peripheral wall of the outer shell are used to form a first gas flow channel, and the low-pressure cavities located on both sides of the axial direction of the stationary vortex disk are connected through the first gas flow channel; the outer peripheral wall of the main bearing housing and the inner peripheral wall of the outer shell are used to form a second gas flow channel, and the low-pressure cavities located on both sides of the axial direction of the main bearing housing are connected through the second gas flow channel.

[0083] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. 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 this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A compressor, comprising a housing (1) and a muffler cover (6), wherein the muffler cover (6) divides the inner cavity of the housing (1) into a low-pressure chamber (200) and a high-pressure chamber (100), wherein a compression assembly (3) is provided in the low-pressure chamber (200), wherein the low-pressure chamber (200) has a compression intake port (11) provided on the housing (1), wherein the compression assembly (3) comprises a stationary scroll plate (31) and a moving scroll plate (32) meshing to form a compression chamber (33); characterized in that The compression chamber (33) has a lower vortex intake port (311) and an upper vortex intake port (312) both located on the stationary vortex disk (31). Along the axial direction of the stationary vortex disk (31), the lower vortex intake port (311) is located between the compression intake port (11) and the upper vortex intake port (312). The upper vortex intake port (312) and the lower vortex intake port (311) are both connected to the low-pressure chamber (200) so that the gas introduced into the low-pressure chamber (200) through the compression intake port (11) can enter the compression chamber (33) through the upper vortex intake port (312) and the lower vortex intake port (311).

2. The compressor of claim 1, wherein, The compressor also includes a main bearing housing (2) for supporting the stationary scroll (31) and a guide ring (4) fixed to the main bearing housing (2), wherein the stationary scroll (31) is buoyantly disposed in the guide ring (4) along its own axial direction; The low-pressure chambers (200) on both sides of the guide ring (4) are connected through the first flow channel (41). The upper vortex intake port (312) is connected to the low-pressure chamber (200) located on one side of the guide ring (4) in the axial direction. The lower vortex intake port (311) is connected to the low-pressure chamber (200) located on the other side of the guide ring (4) in the axial direction.

3. The compressor of claim 2, wherein, The first flow channel (41) is a through hole formed on the guide ring (4); Alternatively, the outer peripheral wall of the guide ring (4) and the inner peripheral wall of the outer shell (1) may be used to form the first flow channel (41); Alternatively, the first flow channel (41) is at least partially located outside the housing (1), the first flow channel (41) having an air inlet and an air outlet on the housing (1), the air inlet communicating with the low-pressure chamber (200) located on the side of the guide ring (4) away from the muffler cover (6), and the air outlet communicating with the low-pressure chamber (200) located on the side of the guide ring (4) close to the muffler cover (6).

4. The compressor of claim 3, wherein, The main bearing housing (2) is provided with a second flow channel (21), or the outer peripheral wall of the main bearing housing (2) and the inner peripheral wall of the outer shell (1) are enclosed to form a second flow channel (21); One end of the second flow channel (21) is connected to the low-pressure cavity (200) on one side of the main bearing housing (2), and the other end of the second flow channel (21) is connected to the low-pressure cavity (200) on the other side of the main bearing housing (2).

5. The compressor of claim 4, wherein, The first flow channel (41) is provided in multiple ways, and the multiple first flow channels (41) are arranged at circumferential intervals along the guide ring (4); And / or, the second flow channel (21) is provided with a plurality of second flow channels (21) arranged at circumferential intervals along the main bearing housing (2); And / or, the upper vortex intake port (312) is at least partially opened on the end plate of the stationary vortex disk (31).

6. The compressor of claim 2, wherein, The stationary scroll plate (31) is provided with a keyway (3131), and the compressor also includes a cross slip ring (5) for limiting the rotation of the moving scroll plate (32). The cross slip ring (5) includes a slider (51) that is slidably disposed in the keyway (3131). The upper end face of the guide ring (4) is lower than the upper vortex air intake (312). The guide ring (4) is provided with an oil guide channel (42). One end of the oil guide channel (42) extends to the upper end face of the guide ring (4), and the other end extends to the lower end face of the guide ring (4). The opening of the keyway (3131) faces downward. An oil guide hole (3132) is provided on the bottom wall of the keyway (3131). The oil guide channel (42), the oil guide hole (3132), and the keyway (3131) are connected sequentially from top to bottom.

7. The compressor of claim 6, wherein, The oil guide channel (42) includes an oil collection groove (421) and an oil passage hole (422). The oil collection groove (421) is opened on the end face of the guide ring (4) near the end of the muffler cover (6). One end of the oil passage hole (422) extends through to the bottom wall of the oil collection groove (421), and the other end extends to the lower end face of the guide ring (4) and communicates with the oil guide hole (3132).

8. The compressor of claim 6, wherein, The outer peripheral wall of the static vortex disk (31) is provided with protrusions (313) that correspond one-to-one with the keyway (3131). The keyway (3131) is at least partially opened on the end face of the corresponding protrusion (313) facing away from the soundproof cover (6). Along the axial direction of the static vortex disk (31), the guide ring (4) is at least partially located above the protrusion (313), the oil guide channel (42) is opened on the guide ring (4) located above the protrusion (313), and one end of the oil guide hole (3132) extends to the end face of the protrusion (313) facing the muffler cover (6).

9. The compressor of claim 8, wherein, The protrusions (313) are provided in at least two and are arranged at circumferential intervals along the stationary vortex disk (31); the first flow channel (41) is located between two adjacent protrusions (313); And / or, the lower end face of the guide ring (4) is provided with a sliding groove (43) corresponding to the protrusion (313) one by one, the protrusion (313) is movably placed in the sliding groove (43) along the axial direction of the guide ring (4), and the lower end of the oil guide channel (42) extends to the bottom wall of the sliding groove (43).

10. The compressor of claim 1, wherein, The compressor also includes a main bearing housing (2) for supporting the stationary scroll plate (31); The stationary vortex disk (31) is fixed to the main bearing housing (2); or one of the stationary vortex disk (31) and the main bearing housing (2) is connected to a guide shaft, and the guide shaft is buoyantly connected to the other of the stationary vortex disk (31) and the main bearing housing (2) along the axial direction of the stationary vortex disk (31). The outer peripheral wall of the stationary vortex disk (31) and the inner peripheral wall of the outer shell (1) form a first gas flow channel, and the low-pressure chambers (200) located on both sides of the axial direction of the stationary vortex disk (31) are connected through the first gas flow channel; the outer peripheral wall of the main bearing seat (2) and the inner peripheral wall of the outer shell (1) form a second gas flow channel, and the low-pressure chambers (200) located on both sides of the axial direction of the main bearing seat (2) are connected through the second gas flow channel.

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