compressor

Abstract

The present application relates to the technical field of compressor, and particularly discloses a compressor, lubricating oil is sent into the oil storage cavity through the oil supply channel, when the lubricating oil in the oil storage cavity is higher than the oil inlet port of the oil supply groove, the lubricating oil in the oil storage cavity flows out of the key groove through the oil storage groove, so as to lubricate the sliding fit between the sliding block and the key groove, reduce the abrasion of the inner wall of the sliding block and the key groove, and prolong the service life of the compressor. Moreover, the main bearing seat is split into a seat body and a thrust plate which are arranged in a split mode and connected with each other, the oil supply groove is arranged on at least one of the lower end face of the thrust plate and the upper end face of the seat body, the limitation requirement for the shape of the oil supply groove is greatly reduced, the machining of the oil supply groove is simpler, and the cost is reduced.

Description

Technical Field

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

[0002] In a scroll compressor, the main bearing housing has a main bearing housing for supporting the compression assembly. A cross slip ring is provided between the main bearing housing and the moving scroll disk. The cross slip ring, the main bearing housing, and the moving scroll disk are all fitted with keyways and sliders to realize the restriction of the moving scroll disk from rotating with the crankshaft by using the cross slip ring.

[0003] In related technologies, lubricating oil contained in the gas flowing to the scroll intake of the compression assembly is generally used to lubricate the sliding fit between the keyway and the slider. However, in practical applications, it has been found that when operating under excessive load or low intake flow conditions, the wear between the keyway and the slider is significant. After prolonged use, this leads to increased vibration of the scroll compressor and shortens its service life. Summary of the Invention

[0004] The purpose of this invention is to provide a compressor that enables the lubrication between the keyway and the slider to meet the requirements, reduces wear between the keyway and the slider, and extends the service life of the compressor.

[0005] This invention provides a compressor, the compressor comprising: Moving vortex disk; A drive shaft is used to drive the moving scroll plate to move, and the drive shaft is provided with an oil supply channel; A main bearing housing includes a housing body and a thrust plate separately disposed above the housing body, the thrust plate supporting the moving scroll plate; the upper end face of the housing body abuts against the lower end face of the thrust plate; the top of the housing body is recessed with an oil storage cavity communicating with the oil supply channel; the housing body is provided with a keyway located radially outward of the oil storage cavity; at least one of the lower end face of the thrust plate and the upper end face of the housing body is provided with an oil supply groove, the oil inlet port of the oil supply groove communicating with the oil storage cavity; the keyway is used to receive lubricating oil flowing out from the oil outlet port of the oil supply groove. A cross slip ring is used to limit the rotation of the moving scroll disk, and the cross slip ring has a slider that slides in conjunction with the keyway.

[0006] As one possible implementation of the above-mentioned compressor, among the opposite side walls of the keyway, the side wall facing the rotation direction of the moving scroll is the first side wall, and the oil outlet port of the oil supply groove extends at least partially to the first side wall.

[0007] 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 second groove sidewall; The oil outlet port of the oil supply tank extends at least partially to the side wall of the second tank.

[0008] As one possible implementation of the above-mentioned compressor, the groove sidewall facing the rotation direction of the moving scroll disk in the opposite sidewalls of the keyway is the first groove sidewall. The inner wall of the keyway is provided with a first oil guide groove, and at least part of the first oil guide groove is opened on the side wall of the first groove. The oil supply groove can guide the lubricating oil in it to the first oil guide groove.

[0009] As one possible implementation of the above-mentioned compressor, the oil outlet port of the oil supply tank is connected to the first oil guide tank.

[0010] As one possible implementation of the above-mentioned compressor, the oil supply groove is spaced apart from the first oil guide groove, and the axis of the oil outlet port of the oil supply groove extends to intersect with the inner wall of the first oil guide groove.

[0011] As one possible implementation of the compressor described above, the oil outlet port of the first oil guide groove extends to the outer edge of the keyway along the radial direction of the main bearing housing.

[0012] As one possible implementation of the compressor described above, the bottom wall of the keyway that can abut against the slider is provided with a second oil guide groove, which can receive lubricating oil introduced into the keyway by the oil supply groove.

[0013] As one possible implementation of the compressor described above, the oil outlet port of the second oil guide groove extends to the outer edge of the keyway along the radial direction of the main bearing housing.

[0014] 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; 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; An airflow channel is formed between the radial outer edge of the keyway and the inner wall of the outer shell. The airflow channel is located on the gas flow path from the compression intake port to the vortex intake port.

[0015] The compressor provided by this invention has at least the following beneficial effects: Lubricating oil is delivered into the oil storage chamber through the oil supply channel. When the lubricating oil in the oil storage chamber is higher than the oil inlet port of the oil supply tank, the lubricating oil in the oil storage chamber flows out of the keyway through the oil storage tank to lubricate the sliding fit between the slider and the keyway, reduce the wear of the inner wall of the slider and the keyway, and extend the service life of the compressor.

[0016] Furthermore, by splitting the main bearing housing into a separate but connected housing body and a thrust plate, and with the oil supply groove located on at least one of the lower end face of the thrust plate and the upper end face of the housing body, the restrictions on the shape of the oil supply groove are greatly reduced, and the processing of the oil supply groove is simpler, which helps to reduce costs. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the compressor provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the base provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the structure of the seat provided in Embodiment 2 of the present invention; Figure 4 This is a partial structural diagram of the seat provided in Embodiment 2 of the present invention; Figure 5 This is a partial structural schematic diagram of the seat provided in Embodiment 3 of the present invention; Figure 6 This is a partial structural diagram of the seat provided in Embodiment 4 of the present invention.

[0018] In the picture: 1. Outer casing; 11. Compressed air intake port; 21. Moving scroll plate; 22. Stationary scroll plate; 221. Scroll intake port; 23. Compression chamber; 3. Main bearing housing; 31. Housing body; 311. Keyway; 312. Oil supply groove; 313. First oil guide groove; 314. Second oil guide groove; 32. Thrust plate; 4. Cross slip ring; 41. Sliding block; 5. Drive shaft; 100. Oil reservoir; 200. Airflow channel. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Example 1 This embodiment provides a compressor to ensure adequate lubrication between the keyway and the slider, thereby reducing wear between them and extending the compressor's service life. Exemplarily, the compressor is a scroll compressor.

[0024] like Figure 1 and Figure 2As shown, the compressor includes a moving scroll 21, a drive shaft 5, a main bearing housing 3, and a cross ring 4. The drive shaft 5 drives the moving scroll 21 and has an oil supply channel. The main bearing housing 3 includes a housing 31 and a thrust plate 32, which is separate from the housing 31 and positioned above it. The thrust plate 32 supports the moving scroll 21. The upper end face of the housing 31 abuts against the lower end face of the thrust plate 32, and the top of the housing 31 is recessed to connect with the oil supply channel. The oil storage cavity 100 is open, and the seat body 31 is provided with a keyway 311 located on the radial outer side of the oil storage cavity 100; at least one of the lower end face of the thrust plate 32 and the upper end face of the seat body 31 is provided with an oil supply groove 312, the oil inlet port of the oil supply groove 312 is connected to the oil storage cavity 100, and the keyway 311 is used to receive the lubricating oil flowing out from the oil outlet port of the oil supply groove 312; the cross slip ring 4 is used to limit the rotation of the moving scroll plate 21, and the cross slip ring 4 has a slider 41 that slides in cooperation with the keyway 311.

[0025] Lubricating oil is supplied into the oil storage chamber 100 through the oil supply channel. When the lubricating oil in the oil storage chamber 100 is higher than the oil inlet port of the oil supply groove 312, the lubricating oil in the oil storage chamber 100 flows out of the keyway 311 through the oil storage groove to lubricate the sliding fit between the slider 41 and the keyway 311, reduce the wear of the inner wall of the slider 41 and the keyway 311, and extend the service life of the compressor.

[0026] Furthermore, by splitting the main bearing housing 3 into a separate but connected housing 31 and a thrust plate 32, and with the oil supply groove 312 located on at least one of the lower end face of the thrust plate 32 and the upper end face of the housing 31, the restrictions on the shape of the oil supply groove 312 are greatly reduced, and the processing of the oil supply groove 312 is simpler, which helps to reduce costs.

[0027] For example, the oil supply groove 312 is formed on the upper end face of the base 31. In other embodiments, the oil supply groove 312 may also be formed on the upper end face of the thrust plate 32. Alternatively, the oil supply groove 312 may be formed on both the lower end face of the thrust plate 32 and the upper end face of the base 31. It should be noted that the number of oil supply grooves 312 formed on the lower end face of the thrust plate 32 is not limited to one, and the number of oil supply grooves 312 formed on the upper end face of the base 31 is not limited to one.

[0028] Specifically, the compressor also includes a housing 1, the bottom cavity of which forms an oil sump. The moving scroll plate 21, drive shaft 5, main bearing housing 3, and cross slip ring 4 are all located inside the housing 1. The lubricating oil collected in the oil sump at the bottom of the housing 1 is pumped into the oil storage chamber 100 through the oil supply channel. The lubricating oil in the oil storage chamber 100 enters the keyway 311 through the oil supply groove 312 to lubricate the keyway 311 and the slider 41 during their sliding engagement.

[0029] 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, and how the lubricating oil in the lubrication supply channel enters the oil storage chamber 100, are existing technologies in the field and will not be described in detail here.

[0030] In some embodiments, such as Figure 1 and Figure 2 As shown, in the keyway 311, the side wall facing the rotation direction of the moving scroll plate 21 is the first side wall, and the oil outlet port of the oil supply groove 312 extends at least partially to the first side wall. Along the radial direction of the main bearing seat 3, the side wall of the keyway 311 located inside the movement direction of the slider 41 is the second side wall; the oil outlet port of the oil supply groove 312 extends at least partially to the second side wall.

[0031] For example, a portion of the oil outlet port of the oil supply groove 312 extends to the side wall of the first groove and another portion extends to the side wall of the second groove, so as to introduce the lubricating oil in the oil storage chamber 100 into the keyway 311 through the oil supply groove 312.

[0032] In some embodiments, such as Figure 1 and Figure 2 As shown, the inner wall of the keyway 311 is provided with a first oil guide groove 313, and at least part of the first oil guide groove 313 is opened on the side wall of the first groove, so that the oil supply groove 312 can guide the lubricating oil in it to the first oil guide groove 313.

[0033] During the eccentric rotation of the moving scroll plate 21, the slider 41 and the first groove sidewall of the keyway 311 form the main friction pair. In other words, during the eccentric rotation of the moving scroll plate 21, the friction between the slider 41 and the keyway 311 of the cross slip ring 4 mainly occurs on the first groove sidewall. In order to meet the lubrication requirements between the slider 41 and the keyway 311, a first oil guide groove 313 is opened on the first groove sidewall, and the lubricating oil in the oil supply groove 312 is guided into the first oil guide groove 313 to lubricate the friction between the slider 41 and the first groove sidewall and reduce the wear between the slider 41 and the first groove sidewall.

[0034] It should be noted that along the circumference of the main bearing housing 3, the keyway 311 has a third groove sidewall that is opposite to the first groove sidewall. When the moving scroll 21 rotates in the reverse direction, the slider 41 and the third groove sidewall of the keyway 311 form the main friction pair. In other words, during the reverse eccentric rotation of the moving scroll 21, the friction between the slider 41 of the cross slip ring 4 and the keyway 311 mainly occurs between the third groove sidewall and the slider 41. A first oil guide groove 313 can also be opened on the third groove sidewall to guide the lubricating oil in the oil supply groove 312 into the first oil guide groove 313 to lubricate the friction between the slider 41 and the third groove sidewall and reduce the wear between the slider 41 and the third groove sidewall.

[0035] In some embodiments, such as Figure 1 and Figure 2 As shown, the oil outlet port of the oil supply groove 312 is connected to the first oil guide groove 313, so that the lubricating oil flowing out of the oil outlet port of the oil supply groove 312 can directly enter the first oil guide groove 313.

[0036] Example 2 The difference between this embodiment and Embodiment 1 is that, as Figure 3 and Figure 4 As shown, along the radial direction of the main bearing housing 3, the oil outlet port of the first oil guide groove 313 extends to the outer edge of the keyway 311.

[0037] By extending the oil outlet of the first oil guide groove 313 to the outer edge of the keyway 311, excess lubricating oil in the first oil guide groove 313 can be discharged in time to remove the heat generated by the slider 41 sliding in the keyway 311, thereby improving the heat dissipation effect between the keyway 311 and the slider 41 when they slide together.

[0038] In some embodiments, such as Figure 3 and Figure 4 As shown, the portion of the bottom wall of the keyway 311 that abuts against the slider 41 is provided with a second oil guide groove 314. The second oil guide groove 314 can receive the lubricating oil introduced into the keyway 311 by the oil supply groove 312. Since the second oil guide groove 314 is located on the bottom wall of the keyway 311, the lubricating oil falling onto the bottom wall of the keyway 311 can enter the second oil guide groove 314 to lubricate the sliding fit between the bottom wall of the keyway 311 and the slider 41, thereby reducing wear between the slider 41 and the bottom wall of the keyway 311.

[0039] In some embodiments, such as Figure 3 and Figure 4 As shown, along the radial direction of the main bearing housing 3, the oil outlet port of the second oil guide groove 314 extends to the outer edge of the keyway 311.

[0040] By extending the oil outlet of the second oil guide groove 314 to the outer edge of the keyway 311, excess lubricating oil in the second oil guide groove 314 can be discharged in time to remove the heat generated by the sliding of the slider 41 in the keyway 311, thereby improving the heat dissipation effect between the keyway 311 and the slider 41 when they slide together, and preventing the accumulation of lubricating oil in the keyway 311, which would prevent the heat generated by the sliding of the keyway 311 and the slider 41 from being discharged in time.

[0041] In some embodiments, such as Figure 1As 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. A moving scroll plate 21 is disposed inside the outer casing 1 and 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, a keyway 311 is located between the scroll intake port 221 and the compression intake port 11. An airflow channel is formed between the radial outer edge of the keyway 311 and the inner wall of the outer casing 1. The airflow channel is located on the gas flow path from the compression intake port 11 to the scroll intake port 221.

[0042] During compressor operation, the lubricating oil in the keyway 311 lubricates the sliding fit between the keyway 311 and the slider 41. Excess lubricating oil in the keyway 311 flows out through the first oil guide groove 313 and the second oil guide groove 314. The lubricating oil flowing out of the first oil guide groove 313 and the second oil guide groove 314 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.

[0043] Specifically, such as Figure 1 As shown, an airflow channel 200 is formed between the outer peripheral wall of the main bearing housing 3 and the inner peripheral wall of the outer casing 1, extending axially along the main bearing housing 3. The oil outlet ports of the first oil guide groove 313 and the second oil guide groove 314 are both connected to the airflow channel 200, allowing gas entering the outer casing 1 from the compression intake port 11 to flow upwards through the airflow channel 200 to the vortex intake port 221, and then into the compression chamber 23. As the gas flows through the airflow channel 200, the lubricating oil flowing out from the first oil guide groove 313 and the second oil guide groove 314 mixes with the gas flowing through the airflow channel 200 and flows upwards into the vortex intake port 221.

[0044] 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 words, the airflow channel 200 is an annular channel extending circumferentially along the main bearing housing 3. In other embodiments, the main bearing housing 3 may also be configured as a plurality of airflow channels 200 spaced apart circumferentially along the main bearing housing 3, with one airflow channel 200 provided for each slider 41, such that the first oil guide groove 313 and the second oil guide groove 314 opened on the inner wall of the keyway 311 that slides with the slider 41 are connected to the corresponding airflow channel 200.

[0045] 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.

[0046] Example 3 The difference between this embodiment and Embodiment 1 is that, as Figure 5 As shown, the oil outlet port of the oil supply tank 312 is extended to the side wall of the first tank.

[0047] Example 4 The difference between this embodiment and Embodiment 1 is that, as Figure 6 As shown, the oil supply groove 312 and the first oil guide groove 313 are spaced apart, and the axis of the oil outlet port of the oil supply groove 312 extends to intersect with the inner wall of the first oil guide groove 313. During the rotation of the drive shaft 5, the lubricating oil in the oil storage chamber 100 has a certain oil pressure, so that the lubricating oil entering the oil supply groove 312 from the oil storage chamber 100 will be sprayed out through the oil outlet port of the oil supply groove 312 and sprayed onto the side wall of the first groove where the first oil guide groove 313 is located.

[0048] For example, the oil outlet of the oil supply tank 312 extends entirely to the side wall of the second tank.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A compressor, characterized in that, include: Moving vortex disk (21); A drive shaft (5) is used to drive the moving scroll plate (21) to move, and the drive shaft (5) is provided with an oil supply channel; The main bearing housing (3) includes a housing body (31) and a thrust plate (32) separately disposed from the housing body (31) and disposed above the housing body (31). The thrust plate (32) is used to support the moving scroll plate (21). The upper end face of the housing body (31) and the lower end face of the thrust plate (32) abut against each other. The top of the housing body (31) is recessed with an oil storage cavity (100) communicating with the oil supply channel. The housing body (31) is provided with a keyway (311) located radially outside the oil storage cavity (100). At least one of the lower end face of the thrust plate (32) and the upper end face of the housing body (31) is provided with an oil supply groove (312). The oil inlet port of the oil supply groove (312) is connected to the oil storage cavity (100). The keyway (311) is used to receive the lubricating oil flowing out from the oil outlet port of the oil supply groove (312). A cross slip ring (4) is used to limit the rotation of the moving scroll disk (21), and the cross slip ring (4) has a slider (41) that slides in conjunction with the keyway (311).

2. The compressor according to claim 1, characterized in that, Of the two opposite side walls of the keyway (311), the side wall facing the rotation direction of the moving scroll plate (21) is the first side wall, and the oil outlet port of the oil supply groove (312) extends at least partially to the first side wall.

3. The compressor according to claim 1 or 2, characterized in that, Along the radial direction of the main bearing seat (3), the groove sidewall of the keyway (311) located inside the movement direction of the slider (41) is the second groove sidewall; The oil outlet port of the oil supply tank (312) extends at least partially to the side wall of the second tank.

4. The compressor according to claim 1, characterized in that, Of the two opposite side walls of the keyway (311), the side wall facing the rotation direction of the moving scroll disk (21) is the first side wall. The inner wall of the keyway (311) is provided with a first oil guide groove (313), at least part of the first oil guide groove (313) is opened on the side wall of the first groove, and the oil supply groove (312) can guide the lubricating oil in it to the first oil guide groove (313).

5. The compressor according to claim 4, characterized in that, The oil outlet port of the oil supply tank (312) is connected to the first oil guide tank (313).

6. The compressor according to claim 4, characterized in that, The oil supply groove (312) is spaced apart from the first oil guide groove (313), and the axis of the oil outlet port of the oil supply groove (312) extends to intersect with the inner wall of the first oil guide groove (313).

7. The compressor according to claim 4, characterized in that, Along the radial direction of the main bearing housing (3), the oil outlet port of the first oil guide groove (313) extends to the outer edge of the keyway (311).

8. The compressor according to claim 1, characterized in that, The bottom wall of the keyway (311) that can abut against the slider (41) is provided with a second oil guide groove (314), which can receive the lubricating oil introduced into the keyway (311) by the oil supply groove (312).

9. The compressor according to claim 8, characterized in that, Along the radial direction of the main bearing housing (3), the oil outlet port of the second oil guide groove (314) extends to the outer edge of the keyway (311).

10. The compressor according to claim 7 or 8, 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 (311) is located between the vortex intake port (221) and the compression intake port (11). An airflow channel (200) is formed between the radial outer edge of the keyway (311) and the inner wall of the outer shell (1). The airflow channel (200) is located on the gas flow path from the compression intake port (11) to the vortex intake port (221).

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