Compressor

Abstract

The utility model belongs to the technical field of compressors, and discloses a compressor which is characterized in that an oil leakage groove is formed in the inner wall of a key groove to timely discharge redundant lubricating oil in the key groove, so that the lubricating effect between the key groove and a sliding block is ensured, and meanwhile, the lubricating oil discharged out of the key groove through the oil leakage groove is utilized to take away heat generated by sliding of the sliding block in the key groove. The heat dissipation effect between the key groove and the sliding block in sliding fit is improved.

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 moving scroll and a stationary scroll that mesh with each other to form a compression chamber. The moving scroll and the stationary scroll are supported by a main bearing housing. The moving scroll is connected to a drive shaft that is eccentrically positioned thereto. The moving scroll and the main bearing housing are connected by a cross slip ring. The cross slip ring restricts the rotation of the moving scroll. The rotation of the drive shaft causes the moving scroll to rotate eccentrically.

[0003] To meet the lubrication requirements between the cross slip ring and the main bearing housing, lubricating oil from the main bearing housing is introduced into the keyway on the main bearing housing. However, in actual application, it has been found that if too much lubricating oil is introduced into the keyway, the lubricating oil may accumulate in the keyway and cannot be discharged in time, affecting the heat dissipation effect. Utility Model Content

[0004] The purpose of this invention is to provide a compressor that can improve the heat dissipation effect between the cross slip ring and the main bearing housing while ensuring the lubrication effect between them.

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

[0006] Compressor, including:

[0007] Moving vortex disk;

[0008] The main bearing housing is used to support the moving scroll disk. The main bearing housing has an upward-facing keyway. An oil leakage groove is formed on the inner wall of the keyway. One end of the oil leakage groove extends to the outer peripheral wall of the main bearing housing. The oil leakage groove is used to guide the lubricating oil in the keyway to flow out.

[0009] A cross slip ring is used to limit the rotation of the moving scroll disk. The cross slip ring has a slider that is slidably disposed in the keyway.

[0010] As one possible implementation of the above-mentioned compressor, the compressor further includes a housing with a compression intake port and a stationary scroll plate disposed within the housing, wherein the moving scroll plate is disposed within the housing and meshes with the stationary scroll plate to form a compression chamber;

[0011] The compression chamber has a vortex intake port opened on the stationary vortex disk, and along the axial direction of the main bearing seat, the keyway is located between the vortex intake port and the compression intake port;

[0012] The lubricating oil flowing out of the oil drain can be carried to the vortex intake by the gas flowing from the compressed intake port to the vortex intake port.

[0013] As one possible implementation of the above-mentioned compressor, the oil leakage groove includes a first oil leakage groove, which is formed on the bottom wall of the keyway.

[0014] As one possible implementation of the above-mentioned compressor, the moving scroll is connected to a drive shaft for driving the moving scroll to rotate linearly, and the drive shaft is provided with a lubrication supply channel.

[0015] The main bearing housing and the drive shaft form an oil storage cavity that communicates with the lubrication oil supply channel. The main bearing housing has an oil guide hole, and the oil storage cavity communicates with the keyway through the oil guide hole.

[0016] As one possible implementation of the above-mentioned compressor, in the two slot sidewalls of the keyway, the slot sidewall facing the rotation direction of the moving scroll is the first slot sidewall, and the other slot sidewall is the second slot sidewall.

[0017] At least one of the first groove sidewall and the second groove sidewall is provided with an oil guide groove, and the oil guide hole can guide the lubricating oil in it to the oil guide groove.

[0018] As one possible implementation of the above-mentioned compressor, the first slot sidewall and the second slot sidewall are arranged symmetrically about a preset plane;

[0019] Along the circumference of the main bearing housing, the oil guide hole is located between the side wall of the first groove and the preset plane; or, the oil guide hole is symmetrically arranged about the preset plane.

[0020] As one possible implementation of the above-mentioned compressor, the oil outlet of the oil guide hole extends to the inner wall of the keyway and communicates with the oil guide groove.

[0021] As one possible implementation of the above-mentioned compressor, along the radial direction of the main bearing housing, the groove sidewall of the keyway located inside the slider movement direction is the third groove sidewall, and the oil outlet of the oil guide hole extends to the third groove sidewall and communicates with the oil guide groove.

[0022] Alternatively, the oil outlet of the oil guide hole extends to the side wall of the first groove and communicates with the oil guide groove.

[0023] As one possible implementation of the above-mentioned compressor, the oil outlet direction of the oil guide hole is spaced apart from the oil guide groove, and the oil outlet of the oil guide hole can spray oil toward the groove sidewall of the keyway where the oil guide groove is located.

[0024] As one possible implementation of the above-mentioned compressor, the oil leakage groove includes a second oil leakage groove, and one end of the oil guide groove extends to the outer peripheral wall of the main bearing housing to form the second oil leakage groove.

[0025] The beneficial effects of this utility model are:

[0026] The compressor provided by this utility model has an oil drain groove on the inner wall of the keyway to discharge excess lubricating oil in the keyway in a timely manner. While ensuring the lubrication effect between the keyway and the slider, the lubricating oil discharged through the oil drain groove carries away the heat generated by the slider sliding in the keyway, thereby improving the heat dissipation effect between the keyway and the slider when they slide together. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the compressor provided in this embodiment of the utility model;

[0028] Figure 2 This is a first partial sectional view of the first type of main bearing housing provided in this embodiment of the utility model;

[0029] Figure 3 This is a second partial sectional view of the first type of main bearing housing provided in this embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the second type of main bearing housing provided in this embodiment of the present invention;

[0031] Figure 5 This is a partial sectional view of the second type of main bearing housing provided in this embodiment of the present invention;

[0032] Figure 6 This is a partial sectional view of the third type of main bearing housing provided in this embodiment of the present invention.

[0033] In the picture:

[0034] 1. Outer casing; 11. Compressed air intake port;

[0035] 21. Moving scroll plate; 22. Stationary scroll plate; 221. Scroll intake port; 23. Compression chamber;

[0036] 3. Main bearing housing; 31. Keyway; 311. First groove sidewall; 312. Second groove sidewall; 313. Third groove sidewall; 32. First oil leakage groove; 33. Oil guide hole; 34. Oil guide groove;

[0037] 4. Cross slip ring; 41. Sliding block;

[0038] 5. Drive shaft; 51. Lubrication supply channel;

[0039] 100, oil storage chamber; 200, preset plane. Detailed Implementation

[0040] 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, not the entire structure.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] like Figures 1 to 3 As shown, an embodiment of this utility model provides a compressor, including a moving scroll plate 21, a main bearing housing 3, and a cross slip ring 4. The main bearing housing 3 is used to support the moving scroll plate 21. The main bearing housing 3 has an upward-facing keyway 31. An oil leakage groove is provided on the inner wall of the keyway 31. The oil leakage groove is used to guide the lubricating oil in the keyway 31 to flow out. The cross slip ring 4 is used to limit the rotation of the moving scroll plate 21. The cross slip ring 4 has a slider 41, which is slidably disposed in the keyway 31.

[0045] By opening an oil drain groove on the inner wall of the keyway 31, excess lubricating oil in the keyway 31 can be discharged in time. While ensuring the lubrication effect between the keyway 31 and the slider 41, the lubricating oil discharged through the oil drain groove carries away the heat generated by the slider 41 sliding in the keyway 31, thereby improving the heat dissipation effect between the keyway 31 and the slider 41 when they slide together.

[0046] In some embodiments, such as Figures 1 to 3 As shown, the moving scroll 21 is connected to a drive shaft 5, which is used to drive the moving scroll 21 to rotate in translation. The drive shaft 5 is provided with a lubrication oil supply channel 51. The main bearing housing 3 and the drive shaft 5 form an oil storage cavity 100 that communicates with the lubrication oil supply channel 51. The main bearing housing 3 is provided with an oil guide hole 33. The oil storage cavity 100 is connected to the keyway 31 through the oil guide hole 33.

[0047] The compressor includes a housing 1, a moving scroll plate 21, a main bearing housing 3, and a cross slip ring 4, all housed within the housing 1. An oil sump is formed at the bottom of the housing 1. Lubricating oil collected in the oil sump at the bottom of the housing 1 is pumped into an oil storage chamber 100 through a lubrication supply channel 51. The lubricating oil in the oil storage chamber 100 enters the keyway 31 through an oil guide hole 33 to lubricate the keyway 31 and the slider 41 during their sliding contact. The lubricating oil in the oil storage chamber 100 continuously enters the keyway 31 through the oil guide hole 33, while excess lubricating oil in the keyway 31 continuously flows out through an oil drain groove to remove the heat generated by the slider 41 sliding within the keyway 31. This prevents the accumulation of lubricating oil in the keyway 31, which could lead to the heat generated by the sliding contact between the keyway 31 and the slider 41 not being dissipated in time.

[0048] It should be noted that how the lubricating oil accumulated in the oil sump at the bottom of the outer casing 1 is pumped into the lubrication supply channel 51, and how the lubricating oil in the lubrication supply channel 51 enters the oil storage chamber 100, are existing technologies in the field and will not be described in detail here.

[0049] In some embodiments, the oil leakage groove includes a first oil leakage groove 32, which is formed on the bottom wall of the keyway 31. Excess lubricating oil accumulates on the bottom wall of the keyway 31 and continuously flows into the first oil leakage groove 32. The lubricating oil in the first oil leakage groove 32 flows out to the radial outer side of the main bearing seat 3.

[0050] In some embodiments, such as Figure 1 As shown, the oil guide hole 33 is higher than the bottom wall of the oil storage chamber 100. When the lubricating oil level in the oil storage chamber 100 is higher than the lowest position of the oil guide hole 33, the lubricating oil in the oil storage chamber 100 will automatically enter the oil guide hole 33.

[0051] For example, such as Figure 2 and Figure 3As shown, the keyway 31 has a first groove sidewall 311 and a second groove sidewall 312 arranged opposite to each other along the circumference of the main bearing seat 3. The first groove sidewall 311 and the second groove sidewall 312 are symmetrically arranged about a preset plane 200. The oil guide hole 33 and the first oil leakage groove 32 are both symmetrically arranged about the preset plane 200, so that after the lubricating oil flowing out of the oil guide hole 33 falls to the bottom of the keyway 31, some of the lubricating oil can directly enter the first oil leakage groove 32.

[0052] In some embodiments, such as Figure 1 As shown, the oil guide hole 33 is higher than the bottom wall of the keyway 31. The lubricating oil flowing out of the oil guide hole 33 will fall to the bottom wall of the keyway 31 under the action of gravity, while the excess lubricating oil in the keyway 31 will enter the first oil leakage groove 32.

[0053] In some embodiments, such as Figures 1 to 3 As shown, the outer casing 1 is provided with a compression intake port 11, and the compressor also includes a stationary scroll plate 22 disposed inside the outer casing 1. The moving scroll plate 21 meshes with the stationary scroll plate 22 to form a compression chamber 23. The compression chamber 23 has a scroll intake port 221 opened on the stationary scroll plate 22. Along the axial direction of the main bearing seat 3, the keyway 31 is located between the scroll intake port 221 and the compression intake port 11. The lubricating oil flowing out of the oil drain can be carried to the scroll intake port 221 by the gas flowing from the compression intake port 11 to the scroll intake port 221.

[0054] During compressor operation, the lubricating oil in the keyway 31 lubricates the sliding fit between the keyway 31 and the slider 41. Excess lubricating oil in the keyway 31 flows out through the oil drain groove. The lubricating oil flowing out of the oil drain groove is carried by the gas flowing from the compression intake port 11 to the scroll intake port 221 and enters the compression chamber 23 through the scroll intake port 221. This increases the amount of lubricating oil contained in the gas entering the compression chamber 23 through the scroll intake port 221, meets the lubrication requirements of the meshing of the stationary scroll plate 22 and the moving scroll plate 21, reduces the wear caused by the meshing of the stationary scroll plate 22 and the moving scroll plate 21, and extends the service life of the stationary scroll plate 22 and the moving scroll plate 21.

[0055] In some embodiments, such as Figure 1 As shown, the outer peripheral wall of the main bearing housing 3, which has at least an oil leakage groove, and the inner peripheral wall of the outer casing 1 are spaced apart, so that the gas entering the outer casing 1 from the compression intake port 11 flows upward through the gap between the outer peripheral wall of the main bearing housing 3 and the inner peripheral wall of the outer casing 1 to the vortex intake port 221, and then enters the compression chamber 23 through the vortex intake port 221. When the gas flows through the gap between the outer peripheral wall of the main bearing housing 3 and the inner peripheral wall of the outer casing 1, the lubricating oil flowing out of the oil leakage groove mixes with the gas entering the gap and flows upward together into the vortex intake port 221.

[0056] For example, the outer peripheral wall of the main bearing housing 3 and the inner peripheral wall of the outer casing 1 are spaced apart. In other embodiments, the main bearing housing 3 may also be configured such that only the outer peripheral wall with the oil drain groove is spaced apart from the inner peripheral wall of the outer casing 1.

[0057] It should be noted that the cross slip ring 4 and the inner peripheral wall of the housing 1 are spaced apart, which is the prior art in this field. Therefore, the cross slip ring 4 will not affect the upward flow of gas between the outer peripheral wall of the main bearing housing 3 and the inner peripheral wall of the housing 1 to enter the vortex intake port 221.

[0058] In some embodiments, such as Figure 4 and Figure 5 As shown, in the two groove sidewalls of the keyway 31, the groove sidewall facing the rotation direction of the moving scroll 21 is the first groove sidewall 311, and the other groove sidewall is the second groove sidewall 312; at least one of the first groove sidewall 311 and the second groove sidewall 312 is provided with an oil guide groove 34, and the oil guide hole 33 can guide the lubricating oil in it to the oil guide groove 34.

[0059] During the eccentric rotation of the moving scroll plate 21, the slider 41 and the first groove sidewall 311 of the keyway 31 form the main friction pair, while the slider 41 and the second groove sidewall 312 of the keyway 31 form the secondary friction pair. In other words, during the eccentric rotation of the moving scroll plate 21, the friction between the slider 41 and the keyway 31 of the cross slip ring 4 mainly occurs on the first groove sidewall 311. To meet the lubrication requirements between the slider 41 and the keyway 31, an oil guide groove 34 is opened on the first groove sidewall 311, and the lubricating oil in the oil guide hole 33 is guided into the oil guide groove 34 to lubricate the friction between the slider 41 and the first groove sidewall 311 and reduce the wear between the slider 41 and the first groove sidewall 311.

[0060] When the moving scroll plate 21 needs to be rotated in the opposite direction, the slider 41 and the second groove sidewall 312 of the keyway 31 form the main friction pair, while the slider 41 and the first groove sidewall 311 of the keyway 31 form the secondary friction pair. In other words, during the reverse eccentric rotation of the moving scroll plate 21, the friction between the slider 41 and the keyway 31 of the cross slip ring 4 mainly occurs on the second groove sidewall 312. By opening an oil guide groove 34 on the second groove sidewall 312 and guiding the lubricating oil in the oil guide hole 33 into the oil guide groove 34, the friction between the slider 41 and the second groove sidewall 312 is lubricated, reducing the wear between the slider 41 and the second groove sidewall 312.

[0061] For example, the first groove sidewall 311 is provided with an oil guide groove 34.

[0062] In some embodiments, such as Figures 4 to 6 As shown, the oil outlet of the oil guide hole 33 extends to the inner wall of the keyway 31 and communicates with the oil guide groove 34, so that the lubricating oil flowing out of the oil outlet of the oil guide hole 33 can directly enter the oil guide groove 34.

[0063] In some embodiments, such as Figure 4 and Figure 5 As shown, along the radial direction of the main bearing housing 3, the groove sidewall of the keyway 31 located inside the movement direction of the slider 41 is the third groove sidewall 313, and the oil outlet of the oil guide hole 33 extends to the third groove sidewall 313 and communicates with the oil guide groove 34. In some embodiments, such as Figure 2 and Figure 3 As shown, the oil guide holes 33 can be arranged symmetrically about the preset plane 200; in other embodiments, such as Figure 6 As shown, the oil guide hole 33 can also be located between the first groove sidewall 311 and the preset plane 200 along the circumference of the main bearing housing 3, so that the oil outlet of the oil guide hole 33 is closer to the first groove sidewall 311, which is conducive to quickly guiding the lubricating oil flowing out of the oil guide hole 33 into the oil guide groove 34 to meet the lubrication needs between the first groove sidewall 311 and the slider 41.

[0064] In other embodiments, other forms of oil guide holes 33 may be used to connect the oil guide hole 33 with the oil guide groove 34. For example, the oil outlet of the oil guide hole 33 extends to the side wall 311 of the first groove and is connected to the oil guide groove 34.

[0065] In other embodiments, other forms of oil guide holes 33 may be used to guide the lubricating oil flowing out of the oil guide holes 33 into the oil guide groove 34. For example, the oil guide holes 33 and the oil guide groove 34 are spaced apart, and the oil outlet of the oil guide holes 33 can spray oil towards the groove sidewall of the keyway 31 where the oil guide groove 34 is located. Since the lubricating oil in the oil storage chamber 100 has a certain oil pressure, the lubricating oil entering the oil guide holes 33 from the oil storage chamber 100 will be sprayed out through the oil outlet of the oil guide holes 33 and sprayed onto the groove sidewall of the keyway 31 where the oil guide groove 34 is located.

[0066] In some embodiments, such as Figure 6 As shown, the oil leakage groove includes a second oil leakage groove. One end of the oil guide groove 34 extends to the outer peripheral wall of the main bearing housing 3 to form the second oil leakage groove, so that excess lubricating oil in the oil guide groove 34 can flow out and be carried into the vortex intake port 221 by the airflow flowing between the outer peripheral wall of the main bearing housing 3 and the inner peripheral wall of the outer casing 1 after flowing out.

[0067] It should be noted that, in Figure 4 and Figure 5 In the embodiment shown, one end of the oil guide groove 34 may not extend to the outer peripheral wall of the main bearing seat 3. Excess lubricating oil in the oil guide groove 34 continuously enters between the slider 41 and the keyway 31, and then enters the first oil leakage groove 32 at the bottom of the keyway 31 and is discharged from the keyway 31 through the first oil leakage groove 32.

[0068] 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, characterized in that, include: Moving vortex disk (21); The main bearing housing (3) is used to support the moving scroll disk (21). The main bearing housing (3) has an upward-facing keyway (31). An oil leakage groove is provided on the inner wall of the keyway (31). One end of the oil leakage groove extends to the outer peripheral wall of the main bearing housing (3). The oil leakage groove is used to guide the lubricating oil in the keyway (31) to flow out. A cross slip ring (4) is used to limit the rotation of the moving scroll plate (21). The cross slip ring (4) has a slider (41) which is slidably disposed in the keyway (31).

2. The compressor according to claim 1, characterized in that, The compressor also includes a housing (1) with a compression intake port (11) and a stationary scroll plate (22) disposed in the housing (1). The moving scroll plate (21) is disposed in the housing (1) and meshes with the stationary scroll plate (22) to form a compression chamber (23). The compression chamber (23) has a vortex intake port (221) opened on the stationary vortex disk (22), and along the axial direction of the main bearing seat (3), the keyway (31) is located between the vortex intake port (221) and the compression intake port (11). The lubricating oil flowing out of the oil drain can be carried to the vortex intake port (221) by the gas flowing from the compressed intake port (11) to the vortex intake port (221).

3. The compressor according to claim 1, characterized in that, The oil leakage groove includes a first oil leakage groove (32), which is formed on the bottom wall of the keyway (31).

4. The compressor according to any one of claims 1 to 3, characterized in that, The moving scroll plate (21) is connected to a drive shaft (5) for driving the moving scroll plate (21) to rotate in translation. The drive shaft (5) is provided with a lubrication supply channel (51). The main bearing housing (3) and the drive shaft (5) form an oil storage cavity (100) that communicates with the lubrication oil supply channel (51). The main bearing housing (3) is provided with an oil guide hole (33), and the oil storage cavity (100) communicates with the keyway (31) through the oil guide hole (33).

5. The compressor according to claim 4, characterized in that, Of the two groove sidewalls of the keyway (31), the groove sidewall facing the rotation direction of the moving scroll disk (21) is the first groove sidewall (311), and the other groove sidewall is the second groove sidewall (312). At least one of the first groove sidewall (311) and the second groove sidewall (312) is provided with an oil guide groove (34), and the oil guide hole (33) can guide the lubricating oil in it to the oil guide groove (34).

6. The compressor according to claim 5, characterized in that, The first groove sidewall (311) and the second groove sidewall (312) are arranged symmetrically about a preset plane (200); Along the circumference of the main bearing housing (3), the oil guide hole (33) is located between the first groove sidewall (311) and the preset plane (200); or, the oil guide hole (33) is symmetrically arranged about the preset plane (200).

7. The compressor according to claim 5, characterized in that, The oil outlet of the oil guide hole (33) extends to the inner wall of the keyway (31) and communicates with the oil guide groove (34).

8. The compressor according to claim 7, characterized in that, Along the radial direction of the main bearing seat (3), the groove sidewall of the keyway (31) located inside the movement direction of the slider (41) is the third groove sidewall (313), and the oil outlet of the oil guide hole (33) extends to the third groove sidewall (313) and communicates with the oil guide groove (34). Alternatively, the oil outlet of the oil guide hole (33) extends to the side wall (311) of the first groove and communicates with the oil guide groove (34).

9. The compressor according to claim 5, characterized in that, The oil guide hole (33) is spaced apart from the oil guide groove (34), and the oil outlet of the oil guide hole (33) can spray oil onto the groove side wall of the keyway (31) where the oil guide groove (34) is located.

10. The compressor according to claim 5, characterized in that, The oil leakage groove includes a second oil leakage groove, one end of which extends to the outer peripheral wall of the main bearing seat (3) to form the second oil leakage groove.

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